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Device and method for preventing vacuum clamp of numerical control machine tool from being failed

A technology of CNC machine tools and vacuum clamps, applied in positioning devices, clamping, manufacturing tools, etc., can solve problems such as vacuum failure, equipment accidents, and unfavorable automation, and achieve the effects of ensuring machining accuracy, improving service life, and ensuring normal operation

Inactive Publication Date: 2013-01-23
ALTEAMS SUZHOU DIE CASTING ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, due to the use of coolant, the vacuum fixture often sucks in too much water and causes the vacuum to fail. Therefore, manual drainage is required every time in actual operation, which increases the workload of the operator and is not conducive to the automation of the production process. The more important problem is that manual drainage cannot ensure its reliability. Once the coolant returns and the vacuum fixture fails due to negligence in operation, the workpiece will loosen and equipment accidents will occur.

Method used

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  • Device and method for preventing vacuum clamp of numerical control machine tool from being failed
  • Device and method for preventing vacuum clamp of numerical control machine tool from being failed

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 1 , a device for preventing the failure of vacuum fixtures for CNC machine tools, using a vacuum generator as a vacuum source, including a compressed air pipeline 1 connected to a compressed air source, a vacuum generator 2, a vacuum pipeline 3, and a vacuum fixture 4 for clamping a workpiece , a control circuit (not marked in the figure); the compressed air pipeline is provided with a starting electromagnetic valve 5 for connecting and closing the compressed air pipeline; the air supply port 2-1 of the vacuum generator is connected to the compressed air pipeline connection; the two ends of the vacuum pipeline are respectively connected to the vacuum port 2-2 of the vacuum generator and the vacuum fixture; a vacuum filter 6 and a vacuum meter 7 are arranged in the vacuum pipeline, and the vacuum filter is located at the lowest point of the whole vacuum pipeline. position, the air inlet of the vacuum filter is connected to the vacuum pipeline 3-1 leading t...

Embodiment 2

[0027] Such as figure 2 , a device for preventing the failure of the vacuum fixture of a numerically controlled machine tool, which is provided with a vacuum pipeline 3 identical to that of Embodiment 1, a vacuum fixture 4 for clamping workpieces, a vacuum filter 6, a vacuum gauge 7, a drain solenoid valve 8, and a proximity sensor 9 , control circuit (not marked in the figure) and control flow. It is characterized in that the vacuum source is the central vacuum system pipeline 12 of the factory, a vacuum pipeline access valve 13 is arranged on the central vacuum system pipeline, and the solenoid valve 5 is started to connect the vacuum pipeline access valve 13 and the vacuum pipeline 3.

Embodiment 3

[0029] A kind of method that prevents the numerical control machine tool vacuum clamp from failing, described method is based on the operation method of embodiment one or embodiment two, and described operation method is:

[0030] Place the workpiece on the vacuum fixture, and the adsorbed surface of the workpiece is closely attached to the adsorption surface of the vacuum fixture; press the start button, close the drain solenoid valve to keep the vacuum pipeline in a closed state, open the start solenoid valve to connect the vacuum pipeline to the vacuum source, and the workpiece Clamped on the vacuum fixture; when the gap between the workpiece and the vacuum fixture detected by the proximity sensor is less than 0.3mm, it will send out a signal in place, and the vacuum gauge will send out a vacuum degree signal when the absolute pressure of the vacuum pipeline is lower than 88kPa. After the proximity sensor sends out the in-position signal and the vacuum gauge sends out the va...

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Abstract

The invention relates to a device and a method for preventing a vacuum clamp of a numerical control machine tool from being failed. According to the device, a vacuum pipeline supplies a working vacuum source to a vacuum clamp, and the vacuum degree of the vacuum pipeline is detected by a vacuum meter; a gap between a workpiece and the vacuum clamp is kept in an allowable range by approaching sensors so as to control the volume of a cooling solution flowing into the vacuum clamp; water in the vacuum pipeline is collected by a vacuum filter; water is automatically discharged by a water discharging electromagnetic valve during workpiece exchanging; and the working process is monitored by a control circuit, and the control circuit is linked with the numerical control machine tool. The device has the advantages that liquid in the vacuum pipeline is automatically discharged, so that the vacuum pipeline works normally; and the normal machining technological process is not influenced, and interference caused by human factors can be avoided, so that the equipment safety and reliable running of the production process are guaranteed.

Description

technical field [0001] The invention belongs to tooling of metal processing machine tools, and in particular relates to a device and method for preventing failure of a vacuum clamp of a numerically controlled machine tool. Background technique [0002] CNC machine tools are automated metal processing equipment. The fixtures used by CNC machine tools play an important role in realizing processing automation and ensuring product processing quality; vacuum fixtures are a kind of mechanized equipment that is easy to operate, labor-saving and high-precision, especially suitable for thin-walled workpieces. Clamping is widely used in CNC machine tool processing. When the CNC machine tool uses vacuum fixtures and coolant to process the workpiece at the same time, part of the coolant will be sucked into the vacuum fixture from the gap between the vacuum fixture and the workpiece, and then sucked into the vacuum pipeline. In severe cases, the vacuum will fail and the workpiece will be...

Claims

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Application Information

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IPC IPC(8): B23Q3/00B23Q11/00
Inventor 潘俊鹏
Owner ALTEAMS SUZHOU DIE CASTING ELECTRONICS TECH