CN212858659U

CN212858659U - A clamping tool for butterfly bolt processing

Info

Publication number: CN212858659U
Application number: CN202021908813.8U
Authority: CN
Inventors: 项立平
Original assignee: Kunshan Ningkairui Hardware Products Co ltd
Current assignee: Kunshan Ningkairui Hardware Products Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-02
Anticipated expiration: 2030-09-04

Abstract

This specification provides a clamping tool for butterfly bolt processing, butterfly bolt includes integrated into one piece's screw rod and butterfly bulge, the clamping tool includes: the pneumatic chuck is provided with an air chamber and a clamping part arranged on the air chamber, wherein the air chamber is communicated with the air pump, and the air pump pumps air from the air chamber to enable the air chamber to form negative pressure; the elastic chuck comprises a through hole, a gap is arranged on the through hole, and the through hole is configured to clamp the butterfly bolt; when the air chamber forms negative pressure, the clamping part extrudes the elastic chuck under the action of the negative pressure, so that the gap on the through hole is contracted to clamp the butterfly bolt. Can carry out the centre gripping to butterfly bolt safely to butterfly bolt's screw rod process, avoid traditional centre gripping mode to cause the damage to butterfly bolt's screw rod and butterfly bulge, also can utilize the gas outlet to blow off the processing piece.

Description

A clamping tool for butterfly bolt processing

Technical Field

The application relates to the technical field of machining of mechanical parts, in particular to a clamping jig for machining of butterfly bolts.

Background

The production process of the butterfly bolt comprises the process steps of bending and forming, capping, flattening, punching, tapping and the like, generally adopts semi-continuous production, and most of the production process needs manual operation. When the butterfly bolt is clamped before being processed, a thin butterfly part is directly clamped by a chuck, and the butterfly part of the butterfly bolt is stressed due to the fact that a screw rod part is stressed when tapping in the processing process, so that the butterfly part is deformed and damaged.

Disclosure of Invention

The application aim at provides a clamping tool for butterfly bolt processing, reduces the damage that butterfly bolt received in the course of working.

The application provides a clamping tool for butterfly bolt processing, butterfly bolt includes integrated into one piece's screw rod and butterfly bulge, the clamping tool includes:

the pneumatic chuck is provided with an air chamber and a clamping part arranged on the air chamber, wherein the air chamber is communicated with the air pump, and the air pump pumps air from the air chamber to enable the air chamber to form negative pressure;

the elastic chuck comprises a through hole, a gap is arranged on the through hole, and the through hole is configured to clamp the butterfly bolt;

when the air chamber forms negative pressure, the clamping part extrudes the elastic chuck under the action of the negative pressure, so that the gap on the through hole is contracted to clamp the butterfly bolt.

Preferably, the clamping part comprises an upper wall and a lower wall, and the upper wall and the lower wall are close to each other under the action of negative pressure.

Based on the structure of the clamping jig, a concave part matched with the butterfly-shaped protruding part of the butterfly bolt is arranged on the end face, deviating from the air outlet direction, of one end of the elastic chuck.

Preferably, the surface of the elastic chuck is provided with an annular groove, and the clamping part is arranged in the annular groove during clamping.

Preferably, the gap extends from one end face of the collet to the other end face.

Preferably, the clamping portion is provided with an air port through which air is discharged.

The utility model has the advantages that: the air pump is used for discharging air to safely clamp the butterfly bolt, so that the screw of the butterfly bolt can be conveniently machined, the traditional clamping mode is prevented from damaging the screw and the butterfly-shaped protruding part of the butterfly bolt, machining chips can be blown off through the air outlet, and the chips are prevented from being attached to a machining surface.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a thumb screw in an embodiment of the present application;

FIG. 2 is a schematic view of a clamping state of a clamping jig for machining a butterfly bolt;

FIG. 3 is a block diagram of the elastomeric collet of FIG. 1;

FIG. 4 is a cross-sectional view of the structure of the elastic collet of FIG. 3;

fig. 5 is a left side view of the spring clip structure of fig. 3.

The figures of the above drawings are numbered:

100A, an upper wall; 100B, lower wall; 101. an air chamber;

20. an elastic collet; 201. a through hole; 202. a recess; 203. an annular groove; 204. a gap;

30. a butterfly bolt; 301. a screw; 302. a butterfly shaped protrusion.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification.

As shown in FIG. 1, a thumb screw 30 has a shank 301 and a thumb projection 302.

The application provides a clamping tool for processing above-mentioned butterfly bolt 30, and this clamping tool includes air chuck, is equipped with air chamber 101 and clamping portion on the air chuck for the arrangement of collet 20 of fixed butterfly bolt 30 is in clamping portion. The air chamber 101 is communicated with the air pump, and air in the air chamber 101 is pumped out through the air pump, so that the air chamber 101 forms vacuum or negative pressure to enable the clamping part to form clamping (clamping) or action. When the elastic chuck 20 inserted with the butterfly bolt 30 is installed in the clamping part, the butterfly part of the butterfly bolt is located in the chamber 101, and the clamping part is clamped and fixed with the elastic chuck 20 under the action of negative pressure in the air pump air extraction process.

As shown in fig. 3-5, the collet 20 is cylindrical, and has an annular groove 203 on its surface, a through hole 201 is provided in the middle of the collet 20 for the screw 301 to pass through, and the butterfly-shaped protrusion 202 of the butterfly bolt 30 can be limited by the through hole 301, so that the butterfly bolt cannot pass through the through hole 201 completely.

When the butterfly bolt 30 is clamped, the air pump pumps air out of the air chamber 101, so that negative pressure is formed in the air chamber 101, the clamping part 100 is clamped on the annular groove 203 under the influence of the negative pressure in the air chamber 101, the clamping part 100 tightly clamps the elastic chuck 20 along with the increase and continuous maintenance of the negative pressure, and the elastic chuck 20 contracts to clamp and fix the butterfly bolt 30.

As shown in fig. 2, the clamping portion includes an upper wall 100A and a lower wall 100B, and the upper wall 100A and the lower wall 100B are pressed against the annular groove 203 during contraction, so that the collet 20 is contracted as a whole to clamp the butterfly bolt 30.

Based on the structure of the clamping fixture, referring to fig. 5, the elastic chuck 20 is provided with a plurality of gaps 204 extending from one end surface of the elastic chuck 20 to the other end surface, the gaps 204 are reduced when the elastic chuck 20 is pressed by the clamping part, the reduction of the gaps 204 causes the screw 301 or the butterfly-shaped protrusion 302 to be fixed on the elastic chuck 20, and after the butterfly-shaped bolt 30 is fixed, the part of the screw 301 passing through the through hole 201 can be processed. In order to increase the deformability of the collet, gaps 204 are provided in each case on the two end faces of the collet 20, as shown in fig. 3.

In addition, as shown in fig. 4, a recess 202 matched with the butterfly-shaped protrusion 302 of the butterfly bolt is provided on an end surface of the elastic clamp 20 facing away from the air outlet direction, so as to better clamp the butterfly bolt and protect the butterfly-shaped protrusion 202, thereby preventing the butterfly-shaped protrusion 202 from being damaged during the processing.

Debris can be generated during the machining process, and if the cleaning cannot be carried out for a long time, the machining can be affected, and even machining faults can occur, so that workpieces or machining equipment can be damaged. Therefore, in the present application, the clamping portion is provided with the air port, the opening direction of the air port faces the processing area of the butterfly bolt, the air flows from the air port to the processing area, and the chips are moved away from the processing area along with the flowing air. Of course, the air port can be used as an air pipe, the air pipe adopts a deformable threaded pipe, and the direction of air flow is changed by changing the bending shape of the pipe, so that the chips for processing the butterfly bolt are very convenient to remove.

Based on above-mentioned clastic processing scheme of processing, the same reason, this application provides a solution, be exactly the configuration coolant liquid shower nozzle, fix the coolant liquid shower nozzle and be connected with coolant liquid conveyor on clamping part, spout the coolant liquid to machining area's work piece surface through the coolant liquid shower nozzle, let the piece be washed away by the coolant liquid. While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.

Claims

1. The utility model provides a clamping tool for butterfly bolt processing, butterfly bolt includes integrated into one piece's screw rod and butterfly bulge, its characterized in that, the clamping tool includes:

2. The clamping jig for butterfly bolt processing of claim 1, characterized in that the clamping part has an upper wall and a lower wall, and the upper wall and the lower wall are close to each other under the action of negative pressure.

3. The clamping jig for butterfly bolt processing according to claim 1 or 2, wherein a recess matched with the butterfly-shaped protruding portion of the butterfly bolt is formed in an end face of the elastic chuck, the end face being away from the air outlet direction.

4. The clamping jig for butterfly bolt processing of claim 3, wherein the surface of the elastic chuck is provided with an annular groove, and the clamping part is arranged in the annular groove during clamping.

5. The clamping jig for butterfly bolt machining according to claim 1 or 4, wherein the gap extends from one end surface of the elastic chuck to the other end surface.

6. The clamping jig for butterfly bolt processing of claim 1, characterized in that the clamping portion is provided with an air port.