CN110860927A

CN110860927A - Multipurpose chuck

Info

Publication number: CN110860927A
Application number: CN201810984344.9A
Authority: CN
Inventors: 林建池
Original assignee: CHERNG JIN TECHNOLOGY Co Ltd
Current assignee: CHERNG JIN TECHNOLOGY Co Ltd
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2020-03-06
Anticipated expiration: 2038-08-27
Also published as: CN110860927B

Abstract

A multi-purpose chuck comprises a base, a top seat and a clamping structure, wherein the top seat is combined with the base, a containing chamber is formed between the top seat and the base, the top seat is provided with a through hole, the clamping structure comprises a shaft tube, at least one first clamping piece, at least one second clamping piece and a piston piece, the shaft tube is connected with the base or the top seat, the multi-purpose chuck is used for enabling a pull rod to pass in and out of the shaft tube through the through hole, the pull rod is clamped and squeezed by the first clamping piece or the second clamping piece and is clamped in the shaft tube, and the pull rod can be clamped and squeezed by the first clamping piece or the second clamping piece through the multi-purpose chuck, so that the pull rod is stably clamped and blocked in the shaft tube.

Description

Multipurpose chuck

Technical Field

The utility model relates to a processing tool field especially relates to a chuck of multi-purpose formula.

Background

The existing processing jig field has various structural types due to different processing methods and purposes, and generally comprises a pull rod and a chuck, wherein the pull rod is detachably combined with the chuck. Fig. 1 shows a special chuck 1 for a conventional long rod, which comprises a base 2, a top seat 3 and a clamping structure 4, wherein the top seat 3 is combined with the base 2, and a chamber S1 is formed between the top seat and the base 2; the top seat 3 has a shaft tube portion 5 communicating with the containing chamber S1, wherein the shaft tube portion 5 has an annular surface 5a, the annular surface 5a is provided with a plurality of side holes 5b located at the same height, and the shaft tube portion 5 is used for embedding a long pull rod 6, in addition, the base 2 and the top seat 3 have a pipeline 2a and a pipeline 3a respectively, and the two

pipelines

2a and 3a are used for communicating the containing chamber S1 and an external pressure source a1 respectively. The clamping structure 4 is disposed in the chamber S1 and includes a plurality of balls 4a and a moving element 4b, wherein the balls 4a are disposed in a side hole 5b, respectively, and when the long rod 6 is inserted into the shaft tube portion 5, the external pressure source a1 is activated to input fluid through the pipe 3a and then flow out from the pipe 2a, so as to control the moving element 4b to move downward, as shown in fig. 2, the moving element 4b moving downward pushes the balls 4a to move toward the long rod 6, and the balls 4a partially fall into the annular groove 6a of the long rod 6, thereby clamping the long rod 6, so that the long rod 6 cannot be separated from the chuck 1.

Referring to fig. 3, when the shaft tube 5 of the chuck 1 is embedded with a short pull rod 7, since the length of the short pull rod 7 is shorter than that of the long pull rod 6, even if the moving member 4b is controlled to move downward, the ring groove 7a of the short pull rod 7 cannot be clamped by the balls 4a, so that the short pull rod 7 must be used with a dedicated chuck, and in brief, the long pull rod 6 and the short pull rod 7 have their dedicated chucks and cannot be used with each other. In order to meet the requirement of processing, the processing manufacturer must usually provide a special chuck for the long pull rod 6 or the short pull rod 7 so as to be available at any time, but this will increase the equipment cost of the processing manufacturer, and when the special chuck is not used, a corresponding space is required for storage, so that when the processing manufacturer is in the factory, a large-area factory must be provided for storing the special chuck. In addition, when a worker performs a machining operation, if a special chuck for the long tie bar 6 and the short tie bar 7 is used at the same time, the worker needs to select a correct combination and assembly, which increases the operation procedures.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

Technical problem to be solved

Based on the above problem, this disclosure provides a multi-purpose chuck, can provide the pull rod of different length and use.

(II) technical scheme

The utility model provides a multi-purpose chuck, can press from both sides a pull rod, it includes: the clamping device comprises a base, a top seat and a clamping structure, wherein the top seat is combined with the base, a containing chamber is formed between the top seat and the base, and the top seat is provided with a through hole communicated with the containing chamber; the clamping structure is used for clamping and squeezing the part of the pull rod extending into the containing chamber, and is characterized in that the clamping structure comprises: a shaft tube, at least one first clamping part, at least one second clamping part and a piston part, wherein the shaft tube is connected with the base or the top seat, and the pull rod passes through the through hole to enter and exit the shaft tube, the shaft tube is provided with at least one first through hole and at least one second through hole in the axial direction, and the first through hole is closer to the base than the second through hole; the at least one first clamping part can pass through the first through hole; the at least one second clamping part can pass through the second through hole; the piston piece is positioned in the accommodating chamber and is operated to move up and down between a first position and a second position, wherein the piston piece positioned at the first position pushes the first clamping piece to clamp the pull rod, and the piston piece positioned at the second position pushes the second clamping piece to clamp the pull rod.

The effect of the present disclosure is that the piston member in the first position pushes the first clamping member to clamp the pull rod; the piston piece at the second position pushes the second clamping piece to clamp and squeeze the pull rod.

(III) advantageous effects

According to the technical scheme, the multipurpose chuck disclosed by the invention has at least one or part of the following beneficial effects:

(1) when the multipurpose chuck is used for processing operation, the problems that the operation procedure is increased and the operation time is increased due to the fact that the conventional special chuck needs to be picked out for correct combination and assembly can be solved;

(2) when the multi-purpose chuck is set in a factory, the storage space for placing the conventional chuck can be further reduced due to the multi-purpose property of the multi-purpose chuck.

Drawings

FIG. 1 is a cross-sectional view of a conventional long draw bar specialized chuck in accordance with an embodiment of the present disclosure;

FIG. 2 is a schematic view of the long pull rod being clamped by a special chuck for a conventional long pull rod according to the embodiment of the present disclosure;

FIG. 3 is a schematic view of the short tie bar being inserted into a special chuck for a conventional long tie bar according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a multi-purpose cartridge according to a first preferred embodiment of the present disclosure;

FIG. 5 is a schematic view of a long pull rod of the disclosed embodiment inserted into a multi-purpose cartridge with a piston member in an open position;

FIG. 6 is a schematic view of the multi-purpose chuck clamping the long pull rod with the piston member in the first position according to the embodiment of the present disclosure;

FIG. 7 is a schematic view of the long pull rod being removed from the multi-purpose chuck and the piston member being in an open position in accordance with an embodiment of the present disclosure;

FIG. 8 is a schematic view of the short pull rod being inserted into the multi-purpose chuck with the piston member in the open position according to the embodiment of the present disclosure;

fig. 9 is a schematic view of the multi-purpose chuck clamping the short pull rod and the piston member in the second position according to the embodiment of the disclosure.

[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure

Fig. 1 to 3 are illustrated by the following main reference symbols:

1-special chuck;

2-base

2 a-a pipeline;

3 top seat

3 a-a pipeline;

4-clamping structure

4 a-a ball; 4 b-a moving member;

5-shaft tube part

5 a-annulus; 5 b-side holes;

6-long pull rod

6 a-a ring groove;

7-short pull rod

7 a-a ring groove;

s1-chamber;

a1 — external pressure source.

Fig. 4 to 9 are illustrated by main reference symbols:

100-multipurpose cartridge;

10-base

12-a first channel;

20-top seat

22-perforation; 24 a second channel;

30-clamping structure

32-shaft tube;

322-a first through hole; 324-a second through hole;

34-a first clamping part; 36-a second clamping part;

38-piston part

382-a hollow tubular shaft portion;

382 a-a first recess; 382 b-a second recess;

382 c-a first projection; 382 d-a second projection;

200-long pull rod;

300-short pull rod;

s2-chamber;

p1-open position;

p2-first position;

p3-second position;

w1 — first width;

w2 — second width;

a2 — external pressure source;

Detailed Description

In order to more clearly illustrate the present disclosure, a preferred embodiment will now be described in detail with reference to the accompanying drawings. Referring to fig. 4, a multi-purpose chuck 100 according to a preferred embodiment of the present disclosure is used for clamping a pull rod, and includes a base 10, a top seat 20, and a clamping structure 30, wherein the base 10 and the top seat 20 are detachably combined, and a chamber S2 is formed inside the combined base and top seat.

The base 10 is provided with at least one first passage 12, in this embodiment, the number of the first passages 12 is two, one end of the first passage 12 is connected to an external pressure source a2, the other end of the first passage 12 is connected to the chamber S2, and the external pressure source a2 may be a pressure formed by gas or liquid (e.g., oil).

The top seat 20 has a through hole 22, the through hole 22 is connected to the chamber S2 and is used for a pull rod to pass through and be inserted into the chamber S2, the pull rod can be either a long pull rod or a short pull rod. The top seat 20 has at least one second channel 24, in this embodiment, two second channels 24 are provided, and one end of each second channel is connected to an external pressure source a2, and the other end is connected to the chamber S2.

The clamping structure 30 includes a shaft tube 32, at least one first clamping member 34, at least one second clamping member 36, and a piston member 38, in this embodiment, the number of the first clamping member 34 and the second clamping member 36 is plural.

The shaft tube 32 is located in the containing chamber S2, and the shaft tube 32 has at least one first through hole 322 and at least one second through hole 324 in the axial direction, wherein the first through hole 322 is closer to the base 10 than the second through hole 324, in the embodiment, the number of the first through hole 322 and the second through hole 324 respectively corresponds to the number of the first clamping piece 34 and the second clamping piece 36, wherein the first clamping piece 34 is disposed corresponding to the first through hole 322 in a manner of not falling into the shaft tube 32 and movably located in the first through hole 322; the second clamping member 36 is also movably disposed in the second through hole 324 corresponding to the second through hole 324 in a manner that the second clamping member does not fall into the shaft tube 32, such as reducing the diameter of the through hole near the inner side of the shaft tube 32, but still exposing the clamping member to the inner side of the shaft tube 32. In the present embodiment, the axle tube 32 is integrally connected to the base 10, and the first clamping member 34 and the second clamping member 36 are balls. In other embodiments, the shaft tube can be integrally connected to the top seat 20, and the first clamping member and the second clamping member can be in the shape of a long column or other shapes.

The piston 38 is disposed in the chamber S2 and has a hollow shaft tube 382, wherein the hollow shaft tube 382 is sleeved outside the shaft tube 32, so that the gas or liquid output from the external pressure source a2 flows into the chamber S2 to push the piston 38 to move up and down along the shaft tube 32. As shown in fig. 4, the inner wall of the hollow shaft tube 382 has a first recess 382a, a second recess 382b, a first protrusion 382c and a second protrusion 382d, wherein the first recess 382a is closer to the base 10 than the second recess 382b, the first recess 382a has a first width W1 in the axial direction of the hollow shaft tube 382, the second recess 382b has a second width W2 in the axial direction of the hollow shaft tube 382, and the first width W1 is smaller than the second width W2. Further, the first protrusion 382c is located between an upper edge of the first recess 382a to a lower edge of the second recess 382 b; the second protrusion 382d is located at the upper edge of the second recess 382b, and the structure of the clamping structure 30 can make the clamping structure 30 be operated to clamp the portion of the long or short pull rod extending into the axle tube 32, and make the long or short pull rod be firmly combined with the axle tube 32 in a detachable manner.

The manner in which the multi-purpose chuck 100 of the present embodiment pinches the long tension rod will be described below.

Fig. 4 shows a state where the long pull rod is not inserted into the shaft tube 32, when the piston member 38 is located at the open position P1, and when the piston member 38 is farthest away from the base 10, the first clamping member 34 and the second clamping member 36 are retracted in the first recess 382a and the second recess 382b of the piston member 38, respectively. Fig. 5 shows the state where the long pull rod 200 is extended into the shaft tube 32 but the external pressure source a2 is not yet activated.

Referring again to fig. 6, the external pressure source a2 is activated to input gas or liquid from the second passage 24 into the chamber S2 and push the piston member 38 downward to the first position P2, and then the excess gas or liquid flows back from the first passage 12 to the external pressure source a 2. In the above description, the first protrusion 382c of the hollow tubular portion 382 of the piston 38 moving to the first position P2 presses the first clamping member 34, and a portion of the first clamping member 34 passes through the first through hole 322 to clamp the long pull rod 200, so that the long pull rod 200 is tightly engaged with the axle tube 32. At the same time, the second clamping piece 36 is not pressed by the second protrusion 382d, and therefore, is not displaced and is in a state of not clamping the long rod 200.

Referring to fig. 7, when the external pressure source a2 changes the flow direction of the gas or liquid, even if the gas or liquid is input into the chamber S2 from the first passage 12 and then flows back to the external pressure source a2 from the second passage 24, the piston 38 will move back to the original open position P1, the first clamping member 34 and the second clamping member 36 will move back to the first recess 382a or the second recess 382b, respectively, and the long rod 200 can be smoothly separated from the collet 100.

The multi-purpose chuck 100 of the present embodiment is described below in terms of the manner in which it can be used to clamp a short pull rod.

Referring again to FIG. 8, the pull rod 300 is shown extending into the shaft tube 32 of the chuck 100 with the external pressure source A2 still not activated.

Referring again to FIG. 9, the external pressure source A2 is activated to input gas or liquid from the second passage 24 into the chamber S2 and push the piston member 38 downward to the second position P3, such that excess gas or liquid flows back from the first passage 12 to the external pressure source A2 and the piston member 38 approaches the base 10. In the above description, the second protrusion 382d of the hollow tubular portion 382 of the piston 38 moving to the second position P3 presses the second clamping member 36, and a portion of the second clamping member 36 passes through the second through hole 324 to clamp the short pull rod 300, so that the short pull rod 300 is tightly engaged with the shaft tube 32. Meanwhile, although the first clamping piece 34 is pressed by the first protrusion 382c and partially passes through the first through hole 322, the first clamping piece 34 is in a state of not clamping the short pull rod 300 because the length of the short pull rod 300 is not enough to be clamped by the first clamping piece 34.

The method for separating the short pull rod 300 from the chuck 100 is the same as the method for separating the long pull rod 200, and the piston 38 is retracted to the original opening position P1 by changing the flow direction of the gas or liquid driven by the external pressure source a2, and when the first clamping member 34 and the second clamping member 36 are retracted into the first recess 382a or the second recess 382b, respectively, the short pull rod 300 is smoothly separated from the chuck 100.

In summary, when the user uses the multi-purpose chuck to perform the processing operation, the problems of increasing the operation procedure and increasing the operation time due to the requirement of selecting the correct combination and assembly for the conventional special chuck can be reduced, and the storage space for placing the conventional chuck can be reduced due to the multi-purpose property of the multi-purpose chuck during the factory setting.

The above description is only for the purpose of illustrating preferred embodiments of the disclosure, and all equivalent modifications that are within the scope of the disclosure and the application of the claims are intended to be embraced therein.

Claims

1. A multi-purpose chuck for clamping a pull rod, comprising:

a base;

the top seat is combined with the base, a containing chamber is formed between the top seat and the base, and the top seat is provided with a through hole communicated with the containing chamber;

a clamping structure for clamping the part of the pull rod extending into the accommodating chamber;

it is characterized in that the clamping structure comprises:

a shaft tube, which is connected with the base or the top seat, and the pull rod passes through the through hole to enter and exit the shaft tube, wherein the shaft tube is provided with at least one first through hole and at least one second through hole in the axial direction, and the first through hole is closer to the base than the second through hole;

at least one first clamping part passing through the first through hole;

at least one second clamping part passing through the second through hole; and

and the piston piece is positioned in the accommodating chamber and is operated to move up and down between a first position and a second position, wherein the piston piece positioned at the first position pushes the first clamping piece to clamp the pull rod, and the piston piece positioned at the second position pushes the second clamping piece to clamp the pull rod.

2. The multi-purpose chuck according to claim 1, wherein the piston member has a hollow shaft tube portion sleeved outside the shaft tube so that the piston member can move up and down along the shaft tube, and the inner wall of the hollow shaft tube portion has at least one first recess and at least one second recess; the piston piece can be operated to move to an opening position, so that the first clamping piece and the second clamping piece retreat into the corresponding first concave part and the second concave part respectively, and the pull rod can enter and exit the shaft tube.

3. The multi-purpose chuck according to claim 2, wherein the first recess is closer to the base than the second recess, and the first recess has a first width in the axial direction of the hollow tubular portion, and the second recess has a second width in the axial direction of the hollow tubular portion, wherein the first width is smaller than the second width.

4. The multi-use chuck according to claim 3, wherein the piston member has a first protrusion at the upper edge of the first recess and a second protrusion at the upper edge of the second recess; the first protrusion pushes the first clamping piece when the piston piece is located at the first position, and the second protrusion pushes the second clamping piece when the piston piece is located at the second position.

5. A multi-use chuck according to any one of claims 2 to 4, wherein the piston member in the second position is closest to the base and the piston member in the open position is furthest from the base.

6. The multi-use chuck of claim 5, wherein the base defines at least a first channel, the top seat defines at least a second channel, the first and second channels are connected to an external pressure source, fluid from the external pressure source enters the chamber through the first or second channels, and the fluid moves the piston member up and down.