Back-pull self-centering hydraulic clamp capable of inspecting airtightness

A hydraulic fixture and self-centering technology, applied in the field of hydraulic fixtures, can solve problems such as damage to Morse cone positioning accuracy, loss of fixture accuracy, and scrapped parts.

Active Publication Date: 2019-11-15
智新科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The existing hydraulic fixture does not have the airtight detection function of the end surface (positioning surface). When installing the workpiece, when there are residual iron filings or impurities on the positioning surface, it is easy to cause the positioning accuracy to be lost, resulting in scrapped parts;
[0005] (2) Th...

Method used

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  • Back-pull self-centering hydraulic clamp capable of inspecting airtightness
  • Back-pull self-centering hydraulic clamp capable of inspecting airtightness
  • Back-pull self-centering hydraulic clamp capable of inspecting airtightness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as Figure 1 ~ Figure 3 As shown, a back-pull self-centering hydraulic clamp with airtight detection includes a Morse cone 2, and the side of the Morse cone 2 away from the cone is sequentially connected with an expansion body 4 and a support body 6 ; One side of the expansion body 4 is tightly connected with the Morse cone 2, and the other side is closely connected with the end face of the support body 6 and forms a closed space with the middle part of the support body 6; The end of the body 6 away from the Morse cone 2 is covered with an expansion sleeve 8, and the contact between the support body 6 and the inner hole wall of the expansion sleeve 8 is provided with an annular groove 24, and the annular groove 24 passes through the The oil circuit system is connected to the closed space, and the oil circuit system is sequentially arranged in the support body 6 and the expansion body 4;

[0045] A hollow tie rod 1 is also sleeved in the Morse cone 2, and the tie r...

Embodiment 2

[0067] Such as Figure 1 ~ Figure 3 As shown, a method of using a back-pull self-centering hydraulic clamp with airtight detection, the method of use includes a tightening process and an airtight detection process, the steps are as follows:

[0068] Step (1): Put the workpiece 10 on the expansion sleeve 8, and put the end surface of the workpiece 10 against the end surface of the positioning block 9, and the end of the airtight passage 26 is facing the positioning surface (a part of the end surface) of the workpiece; the machine tool Pull the pull rod 1 to the left, and the pull rod 1 drives the piston disc 13 and the piston 7 to move to the left to compress the oil inside the fixture. sleeve 8, so as to tighten the workpiece 10; wherein the annular groove 24 is within the scope of the inner hole of the workpiece 10;

[0069] Step (2): The gas inside the machine tool is passed into the inner hole of the tie rod 1, and the gas passes through the airtight passage of the Morse c...

Embodiment 3

[0072] When using the back-pull self-centering hydraulic clamp with airtight detection described in Embodiment 1, the positioning block 9 used is matched with the workpiece 10, and the air detection hole (the end of the airtight passage) on the positioning block 9 ) is set to match the end face of the workpiece 10. During assembly, if the wrong workpiece 10 is taken or the hole inserted is wrong, due to the mismatch between the end face and the positioning block 9, it will inevitably lead to air leakage and air tightness detection error, which will cause the machine tool to alarm and remind the workers that the workpiece may be installed incorrectly. Workers select the correct workpiece to install after detection; to a certain extent, the error prevention function is realized to avoid processing the wrong workpiece.

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PUM

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Abstract

The invention discloses a back-pull self-centering hydraulic clamp capable of inspecting airtightness. The back-pull self-centering hydraulic clamp comprises a pull rod, a Morse cone, a nut, an expansion body, a support body, connecting bolts, a piston disc, a piston, an expansion bushing, a positioning block, etc., wherein an oil path system is arranged in the support body and the expansion body;an airtight hole is formed in the end, of the pull rod, near the expansion body; an airtight channel is formed in the position, on the Morse cone, corresponding to the position of the airtight hole,runs through the expansion body, the support body and the expansion bushing in sequence, and extends to a surface in contact with a workpiece; and the airtight channel is staggered with the oil path system. The self-centering of the hydraulic clamp can be achieved; the centering accuracy of the Morse cone is copied to the clamp to better ensure the high and stable positioning accuracy of the clamp; the airtightness of the surface, of the clamp, contacting and positioning the workpiece, can be inspected; and whether the workpiece is mounted wrongly or not can be determined to a certain extent to achieve an error-proofing function of the clamp.

Description

technical field [0001] The invention relates to the technical field of hydraulic clamps, in particular to a back-pull self-centering hydraulic clamp with airtight detection. Background technique [0002] At present, the body part of many hydraulic clamps is connected to the end face of the Morse cone, and the Morse cone is inserted into the main shaft to install the clamp on the main shaft. The main method is to expand the inner hole to fix the end face, use the pull rod to push the piston to move, so that the hydraulic oil inside the fixture is compressed into the expansion sleeve, so as to tighten the workpiece, and the end face of the part is positioned by the positioning block of the fixture. Push-forward hydraulic clamps are widely used in the field of machining. [0003] The existing hydraulic clamps mainly have the following problems: [0004] (1) The existing hydraulic fixture does not have the airtight detection function of the end surface (positioning surface). W...

Claims

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Application Information

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IPC IPC(8): B23B31/40
CPCB23B31/40
Inventor 李争齐张立龙王怀畅徐阳锋李畅杨红兵耿小龙
Owner 智新科技股份有限公司
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