JP6943692B2 - Processing equipment and processing method using it - Google Patents

Description

The present invention relates to a processing apparatus for processing the inner surface of a cylinder formed in a work and a processing method using the processing apparatus.

Conventionally, in a cylindrical workpiece such as a compressor bearing, a hydraulic component, a fuel injection nozzle, etc., which requires high-precision machining, when machining the inner surface of the cylinder, a grinding device dedicated to grinding has been used. As a finishing, it is known that a honing processing device dedicated to honing processing is provided, these two devices are connected by a loader, a robot, or the like, and a workpiece is sent to each device for processing. However, since the two devices are separately provided, a large space is required and the equipment cost is high. Further, it takes time to transfer the workpiece to the grinding apparatus and the honing apparatus for positioning, which causes a problem of time loss.

Therefore, for example, as shown in Patent Document 1, a processing apparatus including a grinding apparatus and a honing apparatus has been proposed. Specifically, it is provided with a rotating plate having three arms extending radially at intervals of 120 °. A grinding machine (grinding unit), a honing machine (honing unit), and a work changing portion are arranged so as to correspond to the tip positions of these arms. Then, the machined work is grasped by the tips of these arms and swiveled by 120 ° to feed the work, and the work is performed on the work positioned in each of the grinding machine, the honing machine, and the work exchange part. There is.

Further, in the honing process, it is known that a cross hatch (intersecting grooves or streaks) is formed on the inner surface of the work as an oil pool in order to retain the lubricating oil. For example, in Patent Document 2, a honing head (honing grindstone) that has entered the inner surface of a work is expanded in diameter while rotating about an axis, and is reciprocated in an axial direction to form a cross hatch.

Japanese Unexamined Patent Publication No. 2000-127039 Japanese Unexamined Patent Publication No. 2014-084842

However, in the above-mentioned conventional patent document 1, the work is gripped by the tips of the three arms and swiveled by 120 °, and then the work is positioned on each of the grinding machine, the honing machine, and the work changing portion to perform the work. Therefore, the structure becomes complicated and the equipment becomes large, which is disadvantageous in terms of cost.

Further, in the above-mentioned conventional patent document 2, since the honing grindstone is made to reciprocate to form a crosshatch while rotating and expanding the diameter, the configuration becomes complicated.

The present invention has been made in view of these points, and an object of the present invention is that grinding and honing can be performed with one processing device, and a crosshatch can be formed with a simple structure. To make things.

In order to achieve the above object, in the present invention, a grinding unit and a honing unit are provided in parallel in one processing device, and the rotating workpiece is moved to a position corresponding to each to perform grinding and honing. And made it possible to form a crosshatch during honing.

Specifically, in the first invention, a processing device for processing the inner surface of a cylinder formed on a work is premised. Then, a tool table in which a grinding unit having a grinding wheel and a honing unit having a honing wheel are provided in parallel, a work table that rotatably supports the work, and the work supported by the work table On the other hand, the tool table moving mechanism that moves the tool table so as to move the grinding wheel and the honing wheel forward and backward, and the honing wheel of the honing processing unit provided on the tool table are moved in the moving direction of the tool table. A honing grindstone reciprocating mechanism that reciprocates in the same direction as above, a work feeding mechanism that moves the work table in the parallel direction of the grinding unit and the honing unit, and at least the tool table moving mechanism and A control device for controlling the work feed mechanism is provided, and the control device rotates the work and the grinding wheel to grind the inner surface of the cylinder of the work, and then moves the work table to perform honing. The work is sent to a position corresponding to the unit, the work is rotated, the diameter of the honing grindstone is expanded and honed, and then the honing grindstone is reciprocated in the same direction as the moving direction of the tool table. It is configured to form a crosshatch on the inner surface of the cylinder of the work.

In the first invention, a grinding unit and a honing unit are arranged side by side on a tool table provided so as to advance and retreat with respect to the work. Then, the work table that supports the work moves in the parallel direction. Therefore, after grinding by moving the tool table back and forth with respect to the rotating work, the work can be sent to the honing processing unit, and the tool table can be moved back and forth with respect to the rotating work to perform honing work. .. Therefore, the work can be subjected to grinding and honing with one processing device without requiring a complicated configuration, and the work efficiency is improved. It also contributes to the miniaturization and cost reduction of processing equipment. Further, a crosshatch can be formed on the inner surface of the cylinder of the work with a simple structure in which the honing grindstone whose diameter is increased with respect to the rotating work is reciprocated. The cross hatch referred to here is a fine scratch (groove, streak, etc.) that intersects in a mesh shape and is formed on the inner surface of the cylinder of the work to hold the lubricating oil.

In the second invention, in the first invention, the honing grindstone is attached to the honing processing unit in a non-rotating state. The non-rotating state here means a state in which the honing grindstone does not rotate in the coaxial direction with the rotation center axis of the work.

In the second invention, the honing process of the work can be performed without rotating the honing grindstone. At this time, since the work is rotating, the honing process can be performed by increasing the diameter of the honing grindstone. Therefore, since a mechanism for rotating the honing grindstone is not required, it is more useful for miniaturization and cost reduction of the processing apparatus.

In the third invention, in the first or second invention, the work rotation mechanism for rotatably supporting the work with respect to the work table is provided, and the work feed mechanism rotates the work by the work rotation mechanism. In this state, the work table is moved so as to be sent from the position corresponding to the grinding unit to the position corresponding to the honing unit.

In the third invention, the work can be kept in a rotated state from the position corresponding to the grinding unit to the position corresponding to the honing unit. Therefore, after the work is ground, the rotation speed of the work can be adjusted before the work is sent to the honing unit and the honing is performed, so that the processing cycle time can be shortened.

In the fourth invention, in the first or second invention, a spindle for holding the work rotatably with respect to the work table and a work rotation mechanism for rotating the spindle are provided, and the spindle rotates the spindle. The work is held in a state where the central axis and the rotation central axis of the work coincide with each other. The work table is moved to the desired position.

In the fourth invention, since the spindle and the rotation center axis of the work are held in the same state, the rotation center axis of the work and the honing grind can be matched by matching the spindle and the expansion center axis of the honing grindstone. It can be aligned with the enlarged diameter central axis. Therefore, the alignment during honing is easy, which is useful for shortening the cycle time and improving the work efficiency.

In the fifth invention, the grinding wheel is made to enter the inner surface side of the cylinder of the work, the work and the grinding wheel are rotated to grind the inner surface of the cylinder of the work, and then the work is rotated. In the same state, the work is sent to a position corresponding to the honing unit, the honing grindstone is made to enter the inner surface side of the cylinder of the work, the work is rotated, and the diameter of the honing grindstone is expanded for honing. After that, the honing grindstone is reciprocated in the same direction as the moving direction of the tool table in the cylinder of the work to form the cross hatch on the inner surface of the cylinder of the work.

In the fifth invention, the work after grinding can be sent to a position corresponding to the honing unit in a state of being rotated. Therefore, the honing process can be performed by inserting the honing grindstone into the inner surface side of the cylinder of the work to increase the diameter, so that the work efficiency is improved. Further, a crosshatch can be formed on the inner surface of the work cylinder with a simple structure in which the honing grindstone is reciprocated within the work cylinder.

As described above, according to the present invention, after the work and the grinding wheel are rotated to grind the inner surface of the cylinder of the work, the work table is moved to feed the work to a position corresponding to the honing machine, and this work is sent. By rotating and expanding the diameter of the honing grindstone so that the inner surface of the cylinder of the work is honing, it is possible to perform grinding and honing with one processing device. Further, a cross hatch can be formed on the inner surface of the cylinder of the work by a simple configuration in which the honing grindstone is reciprocated in the cylinder of the rotating work.

FIG. 1 is a schematic perspective view of a processing apparatus according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the processing apparatus according to the embodiment of the present invention. FIG. 3 is a schematic cross-sectional view for explaining a working state of honing processing by the processing apparatus according to the embodiment of the present invention. FIG. 4 is a schematic cross-sectional view for explaining a working state of honing processing by the processing apparatus according to the embodiment of the present invention. FIG. 5 is a partially enlarged view showing a part of the inner surface of the cylinder of the work on which the crosshatch is formed by the processing apparatus according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of preferred embodiments is merely exemplary and is not intended to limit the present invention, its applications or its uses.

The work W, which is a work piece to be machined by the processing device 1 of the present invention, has a cylindrical shape, and in the processing device 1 of the present invention, the inner surface W1 of the cylinder is processed.

As shown in FIGS. 1 and 2, the processing apparatus 1 includes a rectangular parallelepiped bed 2 and a rectangular parallelepiped column 3 erected laterally on the rear side of the bed 2, and the bed 2 and the column 3 are used. It is configured to form a substantially L-shaped side view. On the front side of the column 3, a tool guide 31 to which a tool table 41 described later is slidably attached is provided.

In the following, the front side (front side of the paper surface in FIG. 1) of the column 3 is referred to as the front side, the back side is referred to as the rear side, and the top and bottom are referred to as the upper side and the lower side as they are. The left side of the paper surface in FIG. 1 and the left side (right side of the paper surface in FIG. 1) are referred to as a right side and a left side, respectively. Further, the left-right direction is referred to as an X direction, the front-back direction is referred to as a Y direction, and the up-down direction is referred to as a Z direction.

Further, the processing apparatus 1 is provided on the front side of the column 3 and includes a processing portion 4 for processing the cylindrical inner surface W1 of the work W, and a work support portion 5 installed on the bed 2 for supporting the work W.

Next, the detailed structure of the processing apparatus 1 will be described below.

The work support portion 5 includes a slide rail portion 51 fixed to the upper surface side of the bed 2, a work table 52 slidably attached to the slide rail portion 51 in the X direction, and a work W on the upper surface side of the work table 52. It has a head shaft 53 for holding the head shaft 53 and a headstock 54 for supporting the head shaft 53. The work W is, for example, a magnet, a chuck, or the like, and is counterclockwise in the direction indicated by an arrow with the axis extending in the Z direction (hereinafter referred to as the Z axis) as the rotation center axis with respect to the main axis 53 (in FIG. 1, in a plan view from above). It is held rotatably in the clockwise direction).

The X-axis motor 56 that constitutes the work feed mechanism, the spindle rotation motor 57 that constitutes the work rotation mechanism, and the control device 58 that controls the entire processing device 1 are provided inside the bed 2.

The work table 52 is attached to the slide rail portion 51 so as to be slidable in the X direction by the operation of the X-axis motor 56. Specifically, from the inner surface grinding position where the cylindrical inner surface W1 of the work W is ground by the grinding unit 6 described later, to the honing position where the cylindrical inner surface W1 of the work W is honing processed by the honing processing unit 7 described later. Move in the X direction so as to send the work W. Further, the spindle 53 is supported by the work table 52 via the headstock 54 so as to be rotatable in the direction indicated by the arrow, that is, in the same direction as the work W, with the Z axis as the rotation center axis by the operation of the spindle rotation motor 57. ing.

At this time, the rotation center axis of the work W is held by the spindle 53 so as to coincide with the rotation center axis of the spindle 53. Therefore, the spindle 53 and the work W rotate with the same rotation center axis.

The processing portion 4 includes a tool table 41 attached so as to be slidable in the Z direction with respect to the tool guide 31 fixed to the front surface side of the column 3. A grinding unit 6 and a honing unit 7 are provided in parallel on the tool table 41 in close proximity to the left and right (X direction). A Z-axis motor 42 that constitutes a tool table moving mechanism is provided inside the column 3.

The grinding unit 6 includes a rectangular internal grinding body 61 attached to the front side of the tool table 41, an internal grinding support 62 attached to the front side of the internal grinding main body 61, and an internal grinding support. A motor 63 provided inside the 62, a grinding wheel shaft 64 attached to the lower side of the motor 63, and a grinding wheel 65 attached to the lower end of the grinding wheel shaft 64 are provided.

The grinding wheel shaft 64 is rotatably attached in the direction indicated by the arrow with the Z axis as the rotation center axis (in FIG. 1, in the clockwise direction in a plan view from above). By the operation of the motor 63, the grinding wheel shaft 64 rotates clockwise around the Z axis in a plan view, and the grinding wheel 65 rotates together with the grinding wheel shaft 64. The grinding wheel 65 has a cylindrical shape, and its outer diameter is smaller than the inner diameter of the cylinder of the work W. The grinding wheel 65 is inserted into the cylinder of the work W, and the grinding wheel 65 is pressed against the inner surface W1 of the cylinder and rotated together with the work W to grind the inner surface W1 of the cylinder of the work W. ing. At this time, the rotation direction of the work W is counterclockwise in a plan view, that is, the rotation directions of the grinding wheel shaft 64 and the work W are opposite to each other, so that the rotation speed is relatively increased and high-precision machining can be performed. You can do it. The work W may be rotated counterclockwise by rotating the grinding wheel shaft 64 counterclockwise.

The honing processing unit 7 moves up and down in the rectangular honing main body 71 attached to the front side of the tool table 41, the honing support 72 attached to the front side of the honing main body 71, and the inside of the honing support 72. A support shaft 73 extending in the direction, a honing grindstone shaft 74 attached to the lower part of the support shaft 73, and a honing grindstone 75 provided further below the honing grindstone shaft 74 are provided. Further, the honing grindstone reciprocating mechanism 80 for reciprocating the honing grindstone 75 in the Z direction (vertical direction) is provided. The honing grindstone reciprocating mechanism 80 forms a mesh-like crosshatch M that functions as an oil reservoir of lubricating oil on the cylindrical inner surface W1 of the work W, so that the honing grindstone shaft 74 and The honing grindstone 75 is reciprocated in the Z direction, that is, in the same direction as the moving direction of the tool table 41.

Specifically, the honing grindstone reciprocating mechanism 80 includes a reciprocating motor 81 that reciprocates the honing support portion 72 in the Z direction with respect to the honing main body 71, and a slide rail provided on the front side of the honing main body 71. The 82 and a slide receiving portion 83 provided on the honing support portion 72 and guided by the slide rail 82 to slide are provided.

The support shaft 73, the honing wheel shaft 74, and the honing wheel 75 are attached to the honing support portion 72 in a non-rotating state. That is, the honing grindstone 75 is attached to the honing processing unit 7 in a state where it does not rotate around the Z axis.

The control device 58 controls the operation of various devices of the processing device 1. In the present embodiment, for example, the Z-axis motor 42 that constitutes the tool table moving mechanism, the X-axis motor 56 that constitutes the work feed mechanism, and the like. It is provided to control the spindle rotation motor 57 and the reciprocating motor 81 that constitute the work rotation mechanism.

Next, the detailed structure of the honing processing unit 7 will be described with reference to FIG.

The honing grindstone 75 includes a holding frame body 79 integrally formed at the lower end of the honing grindstone shaft 74, and a grindstone piece 78 entering and exiting through a slit 79a formed at the lower portion of the holding frame body 79.

Inside the honing wheel shaft 74 and the holding frame body 79, for example, a drive shaft 76 that can slide up and down (Z direction) by NC control, flood control, or the like is provided. At the lower part of the drive shaft 76, two conical tapered portions 77 whose diameters are reduced downward are provided.

At least one grindstone piece 78 is provided in the circumferential direction of the honing grindstone 75, and a plurality of grindstone pieces 78 are arranged side by side at equal intervals, for example. Further, the grindstone piece 78 includes a tapered surface 78a that can come into contact with the tapered surface 77a of the tapered portion 77 of the drive shaft 76. The diameter of the honing grindstone 75 is expanded around the Z axis by moving the grindstone piece 78 in and out through the slit 79a formed in the holding frame body 79. Hereinafter, the Z axis, which is the center of this diameter expansion, will be referred to as a diameter expansion center axis.

Specifically, when the tapered portion 77 (drive shaft 76) slides downward in the Z direction, the grindstone piece 78 in contact with the tapered portion 77 protrudes outward in the circumferential direction around the center axis for diameter expansion, and the diameter is expanded. It is designed to do. Further, as the tapered portion 77 slides upward in the Z direction, the grindstone piece 78 in contact with the tapered portion 77 retracts inward in the circumferential direction about the center axis of the diameter expansion, and returns to the original diameter. .. When honing the work W, the grindstone piece 78 of the honing grindstone 75 that has entered the cylinder of the work W pops out, that is, the honing grindstone 75 has an enlarged diameter and is in contact with the inner surface W1 of the cylinder of the work W. The honing process can be performed by rotating the work W.

Next, the processing method of the work W will be described.

When grinding the inner surface W1 of the cylinder of the work W, as shown in FIG. 1, the work W held with the spindle 53 and the center axis of rotation in the same position corresponds to the grinding unit 6, that is, the grinding unit 6. The X-axis motor 56 is operated to move the work table 52 in the X direction so that the work table 52 is positioned at the internal grinding position facing the surface. At this time, the spindle 53 and the work W are in a state of being rotated by the operation of the spindle rotation motor 57. Then, with the work W in the internal grinding position, the tool table 41 is lowered in the Z-axis direction by the operation of the Z-axis motor 42. Then, the grinding wheel 65 enters the inside of the cylinder inner surface W1 of the work W. Then, by the operation of the motor 63, the grinding wheel 65 is pressed against the rotating cylindrical inner surface W1 of the work W while rotating around the Z axis, and the cylindrical inner surface W1 of the work W is ground. The work W may be rotated about the Z axis after the grinding wheel 65 is brought into the inner surface W1 of the cylinder of the work W. Further, the grinding wheel 65 may be rotated after the grinding wheel 65 has entered the inside of the cylindrical inner surface W1 of the work W, but in order to shorten the machining time, the work while rotating the grinding wheel 65. It is preferable to allow the W to enter the inner surface W1 of the cylinder.

Then, after this grinding process, the cylindrical inner surface W1 of the work W is honed. Specifically, by operating the Z-axis motor 42, the tool table 41 is raised in the Z-axis direction and returned to the state shown in FIG. That is, the grinding wheel 65 is retracted from the inner surface W1 of the cylinder of the work W. Then, the X-axis motor 56 is operated while the work W is rotating so that the work W is positioned at a position corresponding to the honing processing unit 7, that is, a honing processing position facing the honing processing unit 7. , The work table 52 is moved in the X direction (FIG. 2).

At this time, since the rotation center axis of the work W and the rotation center axis of the spindle 53 are in the same state, the rotation center axis of the spindle 53 and the diameter-expanding center axis of the honing grindstone 75 coincide with each other in the work table 52. By moving it to the desired position, the rotation center axis of the work W and the diameter-expanding center axis of the honing grindstone 75 coincide with each other. Therefore, the work W can be easily positioned at the honing processing position, and can be positioned with high accuracy and in a short time.

Further, since the work is sent to the honing processing position while the work W is rotating, it is possible to adjust the rotation speed of the work W during movement of the work W or positioning to the honing processing position, for example. Yes, the cycle time can be shortened.

Then, when the work W is positioned at the honing processing position, the tool table 41 is lowered in the Z-axis direction by the operation of the Z-axis motor 42. Then, the honing grindstone 75 enters the inside of the cylinder inner surface W1 of the work W. Then, as shown in FIG. 3, the honing grindstone 75 is expanded in diameter outward in the circumferential direction about the center axis for diameter expansion, and is brought into contact with the inner surface W1 of the cylinder of the work W. At this time, since the work W is in a state of being rotated, the work W is rotated with the honing grindstone 75 in contact with the cylindrical inner surface W1 of the work W, so that the cylindrical inner surface W1 of the work W is honed. can.

Next, a procedure for forming the cross hatch M on the inner surface W1 of the cylinder of the work W will be described. After the honing process is performed in the above procedure, the tool table 41 is once raised to retract the honing grindstone 75 from the work W. Then, the reciprocating motor 81 is operated. Then, the slide receiving portion 83 provided on the honing support portion 72 is guided by the slide rail 82 provided on the honing main body portion 71, and the honing support portion 72, the honing grindstone shaft 74, and the honing grindstone 75 approach the work W. It descends in the Z direction. At this time, the tool table 41 is stopped at the original raised position. Then, the honing grindstone 75 is brought into the cylindrical inner surface W1 of the work W, the diameter is expanded outward in the circumferential direction in the same manner as the honing process described above, and the honing grindstone 75 is brought into contact with the cylindrical inner surface W1 of the rotating work W. At the same time, by operating the reciprocating motor 81, the honing grindstone 75 is reciprocated in the Z direction while the honing grindstone 75 is in contact with the cylindrical inner surface W1 of the rotating work W. By doing so, as shown in FIG. 5, a crosshatch M is formed on the inner surface W1 of the cylinder of the work W.

As described above, according to the present embodiment, the grinding unit 6 and the honing unit 7 are provided in parallel on the left and right sides of the tool table 41 that reciprocates in the Z direction by the operation of the Z-axis motor 42. Therefore, one Z-axis motor 42 can reciprocate the grinding unit 6 and the honing unit 7 in the Z direction. Further, since the honing grindstone 75 is attached to the honing processing unit 7 in a non-rotating state to rotate the work W, honing processing can be performed only by moving the honing grindstone 75 in the Z direction and expanding the diameter. It is possible, and it is not necessary to separately provide a mechanism for rotating the honing grindstone 75. Therefore, it is useful for miniaturization and cost reduction of the processing apparatus 1 without requiring a complicated structure, and grinding and honing can be performed by one processing apparatus 1. Further, since the work W side rotates, the cross hatch M can be formed on the inner surface W1 of the cylinder of the work W with a simple structure in which the honing grindstone 75 is provided so as to reciprocate in the Z direction in the cylinder of the work W.

By the way, conventionally, the honing grindstone 75 is rotated to honing the inner surface W1 of the cylinder of the work W. Therefore, if the honing grindstone 75 is rotated and entered into the cylindrical inner surface W1 of the work W, the honing grindstone 75 may fly due to the action of centrifugal force. Therefore, conventionally, since the honing grindstone 75 is brought into the cylindrical inner surface W1 of the work W after being in a non-rotating state and then the honing grindstone 75 is rotated, it takes time to start the honing process. On the other hand, in the present invention, since the honing processing unit 7 side is not rotated, centrifugal force does not act. Then, since the work W side is rotated, only the operation of lowering and expanding the diameter of the positioned work W is sufficient. As a result, the time until the honing process is started can be shortened.

In general, in positioning in honing, the center of the rotation center of the spindle 53 and the work W and the center of the diameter-expanding center of the honing grindstone 75 are, for example, errors in centering work and of each mechanical part. A deviation of several μm may occur due to thermal deformation or the like.

As a result, since the honing grindstone 75 does not rotate in the present embodiment, even in such a case, the grindstone piece 78 is unevenly worn to absorb the deviation of the shaft center.

Specifically, as shown in FIG. 4, when a deviation of several μm occurs between the axis center C1 of the rotation center axis of the spindle 53 and the work W and the axis center C2 of the diameter-expanding center axis of the honing grindstone 75. Uneven wear (filled portion) of several μm occurs on the three grindstone pieces 78 that come into contact with the inner surface W1 (dashed line portion) of the work W. In FIG. 4, the amount of deviation and uneven wear is exaggerated for the sake of clarity. As a result, the Z-axis center of the honing grindstone 75 with respect to the outer circumference of the worn grindstone piece 78 coincides with the rotation axis center of the spindle 53 and the work W. That is, there is a difference in the amount of wear of the three grindstone pieces 78 by the amount that the axis center is deviated. Therefore, even if there is a slight deviation between the axis center of the rotation center axis of the spindle 53 and the work W and the axis center of the diameter-expanding center axis of the honing grindstone 75, high-precision machining is possible.

(Other embodiments)
In the present embodiment, the work table 52 of the work support portion 5 is movable in the X direction, and the grinding unit 6 and the honing unit 7 are movable in the Z direction, but the moving direction is not limited to this. .. For example, at least one of them may be provided so as to be movable in the front-rear direction, that is, in the Y direction.

Further, in the present embodiment, the X direction is the horizontal direction, the Y direction is the front-rear direction, and the Z direction is the vertical direction, but the present invention is not limited to this, and for example, the X direction is configured to be the vertical direction. You may.

Further, the cross hatch M formed on the inner surface W1 of the cylinder of the work W is not limited to the pattern shown in FIG. 5, and the spacing, inclination angle, and depth are taken into consideration in consideration of the size of the work W, the function of holding lubricating oil, and the like. The width and the like may be set as appropriate.

Further, in the present embodiment, after the grinding process is completed, the work W is sent to the honing process position while maintaining the rotation to start the honing process. However, between the period after the grinding process and the start of the honing process. , The rotation of the work W may be stopped once.

Further, in the present embodiment, after the honing process is performed, the tool table 41 is once raised to retract the honing grindstone 75 from the work W, and then the reciprocating motor 81 is operated to cross-hatch the inner surface W1 of the cylinder of the work W. Although the M is formed, the reciprocating motor 81 may be operated without raising the tool table 41 to form the crosshatch M.

Further, in the present embodiment, the X-axis motor 56, the spindle rotation motor 57, and the control device 58 are provided inside the bed 2, but the installation location is not limited to this, and may be externally attached.

Further, in the present embodiment, the reciprocating motor 81 is provided inside the honing main body 71, but the installation location is not limited to this, and may be externally attached.

Further, in the present embodiment, the Z-axis motor is provided as the tool table moving mechanism, the X-axis motor is provided as the work feed mechanism, and the spindle rotation motor and the reciprocating motor 81 are provided as the work rotation mechanism. It is good, and is not limited to motors.

1 Processing device 41 Tool table 42 Z-axis motor (tool table moving mechanism)
52 Work table 53 Main shaft 56 X-axis motor (work feed mechanism)
57 Spindle rotation motor (workpiece rotation mechanism)
58 Control device 6 Grinding wheel 65 Grinding wheel 7 Honing wheel 75 Honing wheel 80 Honing wheel Reciprocating mechanism W Work W1 Cylindrical inner surface M Cross hatch

Claims (3)

In a processing device that processes the inner surface of a cylinder formed on a work
A tool table in which a grinding unit having a grinding wheel and a honing unit having a honing wheel are provided in parallel, and
A work table that rotatably supports the above work and
A tool table moving mechanism that moves the tool table so as to advance or retreat the grinding wheel and the honing wheel with respect to the work supported by the work table.
A honing grindstone reciprocating mechanism that reciprocates the honing grindstone of the honing processing unit provided on the tool table in the same direction as the moving direction of the tool table.
A work feed mechanism that moves the work table in the parallel direction of the grinding unit and the honing unit to feed the work, and
A work rotation mechanism that rotatably supports the work with respect to the work table,
It is provided with at least the tool table moving mechanism , the work feeding mechanism, and a control device for controlling the work rotating mechanism.
The honing wheel is attached to the honing unit in a non-rotating state.
The control device rotates the work and the grinding wheel to grind the inner surface of the cylinder of the work, and then adjusts the number of rotations of the work while the work is being rotated by the work rotation mechanism. The work table is moved in the parallel direction of the grinding unit and the honing unit by the work feed mechanism to move from the position corresponding to the grinding unit to the position corresponding to the honing unit. feeding the workpiece while keeping the state in which rotating the workpiece, the honing grindstone remains is expanded in a non-rotating state honing the inner cylindrical surface of the work, then and the cylindrical the honing grindstone nonrotatably A processing apparatus characterized in that a crosshatch is formed on the inner surface of the cylinder of the work by reciprocating in the same direction as the moving direction of the tool table while being in contact with the inner surface. In claim 1 ,
Main axis of the upper SL work rotating mechanism is adapted to hold the workpiece in a state in which the rotation center shaft of the rotational center axis of the work of the main shaft coincide with each other,
The work feed mechanism is a processing apparatus characterized in that the work table is moved to a position where the rotation center axis of the spindle coincides with the diameter expansion center axis of the honing grindstone. A tool table provided with a grinding unit having a grinding wheel and a honing unit having a honing wheel, and
A work table that rotatably supports the work and
A tool table moving mechanism that moves the tool table so as to advance or retreat the grinding wheel and the honing wheel with respect to the work supported by the work table.
A work feed mechanism that moves the work table in the parallel direction of the grinding unit and the honing unit to feed the work, and
Prepare a processing device equipped with a work rotation mechanism that rotatably supports the work on the work table.
The grinding wheel by entering the circular cylindrical inner surface of the work, after grinding the cylindrical inner surface of the workpiece by rotating the workpiece and the grinding wheel,
While the work is being rotated, the rotation speed of the work is adjusted, and the work is sent to a position corresponding to the honing unit.
The honing grindstone is advanced to the cylindrical inner surface of the work, the work in a state of rotating the said honing grindstone remains is expanded in a non-rotating state perform honing,
After that, the honing grindstone is reciprocated in the cylinder of the work in the same direction as the moving direction of the tool table in a non-rotating state and in contact with the inner surface of the cylinder, and is moved to the inner surface of the cylinder of the work. A processing method using a processing apparatus characterized by forming a loss hatch.

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