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Machine tools and control methods for machine tools

A technology of machine tools and moving mechanisms, applied in automatic control devices, thread trimmers, manufacturing tools, etc., can solve problems such as tool or spindle breakage, and achieve the effect of preventing breakage

Active Publication Date: 2019-06-28
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When tapping a machine tool, when the difference between the amount of rotation of the spindle and the amount of vertical movement of the spindle is large, the tool may be stuck on the workpiece, resulting in damage to the tool or the spindle

Method used

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  • Machine tools and control methods for machine tools
  • Machine tools and control methods for machine tools
  • Machine tools and control methods for machine tools

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] A machine tool according to Embodiment 1 will be described based on the drawings. In the following description, up and down, left and right, and front and rear indicated by arrows in the drawings are used.

[0024] Such as figure 1 As shown, the machine tool 100 has a rectangular base 1 extending in the front-rear direction. The workpiece holding part 3 is provided on the upper front side of the base 1 . The workpiece holding part 3 is rotatable about an A-axis extending in the left-right direction, and the workpiece holding part 3 is rotatable about a C-axis extending in the up-down direction. The support table 2 is provided on the upper rear side of the base 1 and supports the column 4 .

[0025] The Y-axis direction moving mechanism 10 is provided on the upper part of the support table 2, and can move the moving plate 16 in the front-rear direction. The Y-axis moving mechanism 10 has a Y-axis screw 12 , a Y-axis motor 13 , a bearing 14 and two rails 11 extending ...

Embodiment approach 2

[0052] A machine tool according to Embodiment 2 will be described based on the drawings. The storage device 64 stores a third threshold C3 and a fourth threshold C4 greater than the third threshold C3. Such as Figure 7 As shown, the CPU 61 sets the variable n to 1 (step S31), and reads the Nnth line of the machining program (step S32). The CPU 61 judges whether or not an end command has been read (M30) (step S33). When an end command is read (step S33: YES), CPU61 ends execution of a processing program. When the end command has not been read (step S33: NO), the CPU 61 determines whether or not a tapping command has been read (step S34). When the tapping machining command has not been read (step S34: NO), the CPU 61 executes the read command (step S35), adds 1 to the variable n (step S36), and returns the process to step S32. When the tapping machining command is read (step S34: Yes), the CPU 61 acquires the current circumferential position of the spindle 51 from the spind...

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PUM

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Abstract

The present invention provides a method of controlling a machine tool and a machine tool. The control unit reads the plurality of commands constituting the processing program in sequence, and controls the driving of the moving mechanism and the motor; and a detecting unit that detects the movement of the moving mechanism and the motor, A second detection portion for detecting a circumferential position of the spindle. The control device includes a determination unit that determines a position in the up-and-down direction calculated based on the circumferential position and the tapping command detected by the second detection unit when the read command includes the tapping command and the position detected by the detection unit , And when the determination unit determines that the difference exceeds the threshold value, the end unit performs the end processing of the execution of the machining program and the execution of the execution of the attack after the completion of the completion of the tapping instruction, and when the determination unit determines that the difference has exceeded the threshold value, the end unit determines whether or not the difference in the up / down direction exceeds the preset threshold value Thread instruction and ends the execution of the second end processing of the machining program.

Description

technical field [0001] The present invention relates to a machine tool capable of controlling the axial position of a main shaft and the circumferential position of a main shaft to which a tool can be attached, and a control method of the machine tool. Background technique [0002] Japanese Patent Laid-Open Publication No. 2013-206330 discloses a machine tool having a main shaft, a moving mechanism for moving the main shaft in an axial direction, a motor for rotating the main shaft around the axis, and controlling the driving of the moving mechanism and the motor A control device, wherein a tool can be fitted to the spindle. The control device controls the rotational speed of the main shaft so that the rotational speed of the main shaft coincides with a target rotational speed at a predetermined position in the axial direction. [0003] When tapping a machine tool, if there is a large difference between the amount of rotation of the spindle and the amount of vertical moveme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q15/007B23G1/16B23G1/44
CPCB23G1/16B23G1/44B23Q15/007
Inventor 堀冈大士
Owner BROTHER KOGYO KK