JPS60201811A - Boring-work apparatus - Google Patents

Abstract

PURPOSE:To permit the boring-work under the optimum grinding conditions by inputting the depth of a hole, the diameter of a twist drill, etc., in a boring-work apparatus driven through NC operation. CONSTITUTION:The main body part of the captioned boring apparatus is constituted of an input means 1, grinding-condition setting means 2, dwell-time setting means 3, peck-feed setting means 4, and an operating means 5. The depth of the hole to be bored, the diameter and the kind of a twist drill to be used are input into the means 1. The input work is carried-out by the calling method, and a calling instruction is input. If the calling instruction is not input, the optimum value is automatically selected in a program. Since, with such constitution, the working pattern and grinding conditions can be automatically determined through the instruction of the parameters such as the depth of the hole, the diameter of the twist drill, etc., boring-work under the optimum grinding conditions is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drilling device, and particularly to a drilling device driven by numerical control.

[Technical background of the invention and its problems] Generally, a drill is used to drill a hole in a workpiece.

In order to perform hole drilling, especially deep hole drilling, with such a drill, it is necessary to frequently perform a drawing operation of the drill, that is, a peck feed operation, in order to cool the cutting edge. Cough, when drilling holes in workpieces made of highly ductile materials, we use a processing method called d'unil cut, in which the cutting edge is advanced several times and then a dwell time (time during which the cutting edge is not advanced) is inserted in order to cut the chips short. I need to take it.

When creating an NC program that specifies these hole machining operations, it is necessary to describe each tool operation in one block of the program, which conventionally requires a large amount of programming time to create error-free input information. They were forced to do work that required

On the other hand, there has been significant progress in the development of drilling tools in recent years, and in addition to the conventionally used high-speed steel twist drills, high-speed steel twist drills with oil holes and carbide drills with oil holes are often used. It was starting to happen.

In general, the optimum drilling conditions and operation patterns for machining differ depending on the tool used, so as the number of types of tools increases, NC programmers are required to understand a wide variety of programming methods. Furthermore, since NC programmers are generally full-time workers who rarely operate machines and are not necessarily familiar with optimal machining conditions, there is a problem in that programming requires a great deal of effort.

Therefore, there is a need for a drilling device that can drill holes in an optimal condition by inputting the hole depth, drill diameter, etc.

[Object of the invention] The present invention has been made in response to such conventional circumstances,
The present invention aims to provide a hole drilling device that can perform hole drilling under optimal cutting conditions by inputting hole depth, drill diameter, etc.

[Summary of the Invention] In other words, the present invention includes an input means for inputting the depth of a hole to be machined, the diameter and type of a drill to be used, and inputting the diameter of the drill from the input means and inputting the rotation speed, feed rate, and dwell time. a cutting condition setting means for setting the interval feed amount and the initial depth of cut; and a dwell time setting means for inputting the rotational speed of the drill set by the cutting condition setting means and setting the dwell time based on this rotational speed. , a peck feed setting means for inputting the hole depth, drill diameter and type thereof from the cutting condition setting means and determining the frequency of the peck feed operation based on the input; and a rotation speed set by the cutting condition setting means; The feed rate, the feed rate of the dwell interval, the initial depth of cut, the dwell time set by the dwell time setting means, and the frequency of beck feed set by the peck feed setting means are input, and the tool is operated based on these values. A hole drill is a processing device characterized by comprising an actuating means for performing the following steps.

[Embodiment of the Invention] The details of the present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 shows an embodiment of the drilling and processing apparatus of the present invention, which includes an input means 1, cutting condition setting means 2, dwell time setting means 3, and peck feed setting means 4t'. 3 and actuating means 5 constitute the main body.

The input means 1 inputs the depth of the hole to be drilled, the diameter of the drill to be used, its type, etc. Input is performed by a so-called calling method, and is performed by inputting a calling command as shown in FIG. Note that the address with * in the calling command in FIG. 2 can be omitted, and if this command is not input, the optimum value will be automatically selected in the program.

In FIG. 2, G is a code command that declares the call of this program.

X and Y specify the hole drilling position on the X and Y planes on the machine coordinates, and when the program is executed, the tool is first positioned at these coordinates, and the predetermined hole drilling is performed based on these coordinates. will be carried out.

2 is the designation of the Zh direction coordinate value (reaching position of the drill tip) which is the machining depth for drilling, and when machining a through hole, it is sufficient to designate two coordinates of the tool surface.

D is the designation of the diameter of the drill to be used, and is a basic parameter that determines the machining ever turn and cutting conditions.

H is a parameter that is valid only in the case of through-hole machining, and specifies the final movement position (Z coordinate) of the tool. If this is omitted, the optimal value will be determined automatically.

S specifies the rotation speed of the tool, and if omitted, the optimum value will be automatically determined.

F is a feed designation, and if omitted, the optimum value will be automatically determined.

■ is a code number that specifies the type of tool and the distinction between a through hole and a blind hole, and is a basic parameter that determines the cutting pattern.

Q is a designation of the depth of cut in the first step, and if omitted, the optimum value is automatically determined.

R is a designation of the tool tract tract (the return position of the tool tip after peck feed operation or machining), and if omitted, a modal value is set.

A is the designation of the initial depth of cut, and the feed is suppressed to 50% of normal until the shoulder of the tool enters the work surface and cutting becomes stable. Note that if this is omitted, the optimum value will be automatically determined.

B is a designation of the amount of extraction during peck feed operation, and if omitted, a modal value is set.

C is a designation of dwell time, and if omitted, the optimum value is automatically determined.

The cutting condition setting means 2 inputs the above-mentioned calling command inputted to the input means 1, and sets the number of revolutions of the drill, the feed rate,
Dwell interval (time from one dwell to the next)
Determine the feed m and initial depth of cut.

The dwell time setting means 3 inputs the rotational speed of the drill set by the cutting condition setting means 2, and sets the dwell time based on this rotational speed.

The peck feed setting means 4 inputs the drill diameter and its type from the input means 1, and determines the frequency of the peck feed operation based on this input.

The operating means 5 operates at the rotation speed set by the cutting condition setting means 2;
Input the feed rate, the feed rate of the dwell interval, the initial depth of cut, the dwell time set by the dwell time setting means 3, and the frequency of the peck feed operation set by the peck feed setting means 4, and based on these values. Perform tool operation.

3 to 5 show flowcharts of each of the above-mentioned means, and in step S1, errors in parameter specification at the time of calling are checked.

In other words, check whether any parameters that must not be omitted are left unspecified.
If there is an error, an error is displayed and the process is stopped.

In step S2, it is determined whether or not the number of rotations has been specified. That is, if there is a designation, that rotation speed is set, and if there is no designation, it is determined whether or not there is an automatic rotation speed determination command. If there is an automatic rotation speed determination command (in this embodiment, a negative number is assigned), the optimum value is automatically set; if not, the process proceeds to the next step.

In step S6, it is determined whether there is a feed command.

If specified, the feed rate is set; if not specified, the optimum feed rate is calculated from the type of tool and the diameter of the drill in step S7.

In step S8, it is determined whether the depth of cut for one step of the dounil cut (feed amount of the dwell interval) is specified. In other words, if specified, the depth of cut will be set,
If there is no specification, the optimal inclusion amount is calculated in step 9.

In step S10, it is determined whether a dwell time is specified for each dwell cut. If specified, the time will be set, and if not specified (step S), the optimal dwell time will be set.
11 causes δ1 to be reduced.

In step 512 (FIG. 4), it is determined whether a cutting feed start point has been specified. If specified, the position will be set,
If there is no designation, a modal position is set in step S13.

In step S14, it is determined whether the hole is a blind hole or a through hole. If blind hole machining is specified, step S1
The process advances to step S7, and if through-hole machining has been designated, it is determined in step S15 whether or not there is a designation for suspending the punching with the tool. When removing a tool, if a clause is specified, the tool tip will move beyond the specified hole depth dimension to the coordinate value, and if there is no specification, the shape of the tool is determined from other input parameters in step S16, and the tool tip is moved to the coordinate value of the specified hole depth. The amount of punching is automatically determined. In this case, the feed rate is automatically set to the normal 50% during punching.

In step S17, it is determined whether or not the amount of withdrawal during the peck feed operation is specified. If there is a designation, that value becomes the extraction amount, and if there is no designation, a modal value is set in step S18.

The actual operation of the machine starts from step S19. That is, in step S19, it is determined whether the X and Y coordinates have been specified, and if the tool position when this program starts to be executed is different from the specified position, the tool is moved in step S20.

In step 821, the cutting fluid pump is activated.

In steps 822 and 523 (FIG. 5), three types are distinguished: a normal HSS drill, a HSS drill with an oil hole (=l), and a tool with an oil hole and a carbide blade.

That is, in a normal high speed steel drill, a fast forward movement of T: (value specified by address R in the calling command) is performed to the cutting start point in step S25, and
At step 26, the cutting feed movement is performed until the shoulder of the tool enters the workpiece and the cutting is stabilized, and at step 827 the first dwell time is inserted.

For tools with oil holes and no carbide blades, first step 82
In step 4, the tool penetrating cutting fluid is discharged, and thereafter steps 825, S26 and S27 described above are executed.

In the case of a tool with an oil hole and a carbide blade, a rapid feed movement is performed to the cutting start point in step S28, and a cutting feed movement is performed in step 829 until the shoulder of the tool enters the workpiece and cutting is stabilized. After the first dwell time is inserted in step S30, the tool penetrating cutting fluid is discharged in step S31.

When the initial cutting for each type of tool is completed in this way,
In the next steps S32 and 833, cutting is performed by combining the Dounil cut and the flat feed operation while sequentially determining the depth of the machined hole.

FIG. 6 shows a flowchart illustrating steps 832 and 833 in detail, in which a machining evaturn is selected and executed depending on the type of tool and the diameter of the drill.

Figure 7 shows the machining process for drilling a blind hole with a diameter of 20 cages and a depth of 100+n using an ordinary twist drill, and the hole position is (500, 500, O
) position. The call command at this time is G1
05 X500.0Y500.0 2100. OG20
．． It is OT2.

Figure 8 shows the machining pattern when drilling a through hole with a diameter of 3011 mm and a workpiece thickness of 1001 m using a carbide drill with an oil hole.The hole position is (500, 5
00, '0).

The call command at this time is G105 X500°OY2
O2, OZloo, OG30.0T21.

Note that in the embodiments described above, parameters that distinguish the material of the workpiece are not used, but by adding a parameter that distinguishes the material of the workpiece, the cutting conditions and machining evaporation turn can be determined to values that are suitable for the material. is also possible.

[Effects of the Invention] As described above, according to the hole drilling processing device of the present invention, the programming work that conventionally required tens to hundreds of blocks to drill a single hole can be changed to the processing parameters. This can be done by simply inputting information, and the time required to create NG programming can be significantly reduced compared to conventional methods. In addition, since the NG program is shorter, the occurrence of programming errors can be reduced, and as a result, the time required for visual checks and operation checks during machining tests performed with the utmost care can be significantly reduced compared to conventional methods. can.

Furthermore, the machining pattern and cutting conditions are automatically determined by specifying parameters such as hole depth and drill diameter.
Programmers can omit troublesome conditional calculations,
NC programming creation efficiency can be improved.

Also, since the NC tape can be shortened, changing the NC tape,
Corrections can be made quickly and accurately.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a calling command of the processing device shown in FIG. 1,
3 to 5 are flowcharts of the adding device in FIG. 1, FIG. 6 is a flowchart showing details of steps S32 and S33 in FIG. 5, and FIGS. FIG. 2 is an explanatory diagram showing an operation pattern of a tool set by a processing device. 1......Input means 2...Cutting condition setting means 3...
......Dwell time setting means 4...
・・・・・・Peck feed setting means 5・・・・・・
・・・・・・Patent attorney representing the operating means Satoshi Suyama - Figure 1 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] (1) An input means for inputting the depth of the hole to be machined, the diameter and type of the drill to be used, and the input means for inputting the diameter of the drill, the rotation speed, feed rate, feed amount of the dwell interval, and initial depth of cut. A cutting condition setting means for setting the depth, a dwell time setting means for inputting the rotational speed of the drill set by the cutting condition setting means and setting a dwell time based on this rotational speed, and the cutting condition setting means. A peck feed setting means that inputs the hole depth, drill diameter, and type and determines the frequency of the Beck feed operation based on this, and a feed of the rotation speed, feed rate, and dwell interval determined by the cutting condition setting means. and an actuation means for inputting the amount and initial depth of cut, the dwell time set by the dwell time setting means, and the frequency of flat feed set by the beck feed setting means, and performing tool operation based on these values. Hole making is a processing device that is characterized by this.