CN214108837U - Anti-skid detachable three-jaw chuck - Google Patents

Abstract

The utility model relates to a three-jaw chuck can be dismantled in antiskid belongs to machine tool clamping device's field, and it includes that chuck body, three circumference equipartition set up the movable jack catch on the chuck body and install the jack catch drive structure in the chuck body, each the movable jack catch includes jack catch seat, jack catch main part and jack catch head, jack catch seat and chuck body sliding connection, jack catch seat and jack catch drive structural connection, jack catch drive structural connection is used for driving the radial movement of jack catch seat along the chuck body, the jack catch main part can be dismantled and connect on the terminal surface that the chuck body was kept away from to the jack catch seat, the jack catch head can be dismantled and connect on jack catch main part length direction's terminal surface, the jack catch head is used for pressing from both sides with the work piece and fixes. This application has and is convenient for change the maintenance to the activity jack catch, practices thrift manufacturing cost, improves the effect to the utilization ratio of activity jack catch.

Description

Anti-skid detachable three-jaw chuck

Technical Field

The application relates to the field of machine tool clamping devices, in particular to an anti-skidding detachable three-jaw chuck.

Background

Chucks are mechanical devices used to clamp workpieces on machine tools. The machine tool accessory clamps and positions a workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on a chuck body. The chuck generally comprises a chuck body, a movable jaw and a jaw driving mechanism. The center of the chuck body is provided with a through hole so as to pass through a workpiece or a bar material; the back part is provided with a cylindrical or short conical structure and is connected with the end part of a main shaft of the machine tool directly or through a flange plate. Chucks are commonly used in lathes, cylindrical grinders and internal grinders, and may also be used in conjunction with various indexing devices for milling and drilling machines.

The relevant chinese utility model patent with publication number CN208374244U discloses a three-jaw chuck for lathe antiskid is effectual, including chuck body, big bevel gear, bevel pinion and three movable jack catch, movable jack catch and big bevel gear threaded connection are equipped with the ring channel that corresponds with big bevel gear and bevel pinion in the chuck body respectively and accomodate the groove, and bevel pinion's inside wall fixedly connected with connecting axle. The utility model discloses a through the rotation of handle, regulation pole, draw runner and connection structure drive connecting axle to the connecting axle drives bevel pinion's rotation, thereby adjusts the position of activity jack catch, does not need the position control that can accomplish the activity jack catch through external spanner like this, makes things convenient for people's use.

Aiming at the related technologies, the inventor thinks that the front end of the movable clamping jaw is tightly abutted and clamped with the clamped object for a long time, the front end of the movable clamping jaw is easy to damage, the related movable clamping jaw is integrally formed, if the workpiece cannot be clamped only because the front end of the movable clamping jaw is damaged, a new movable clamping jaw is replaced, great waste is caused, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to improve the movable jack catch of changing front end wearing and tearing and cause the waste easily, increase manufacturing cost's problem, this application provides a three-jaw chuck can be dismantled in antiskid.

The application provides a pair of three-jaw chuck can be dismantled in antiskid adopts following technical scheme:

the utility model provides a three-jaw chuck can be dismantled in antiskid, includes that chuck body, three circumference equipartition set up the activity jack catch on the chuck body and install the jack catch drive structure in the chuck body, each the activity jack catch includes jack catch seat, jack catch main part and jack catch head, jack catch seat and chuck body sliding connection, the jack catch seat is connected with jack catch drive structure, jack catch drive structure is used for driving the radial movement of jack catch seat along the chuck body, the jack catch main part can be dismantled and connect on the terminal surface of chuck body is kept away from to the jack catch seat, the jack catch head can be dismantled and connect on jack catch main part length direction's terminal surface, the jack catch head be used for with the work piece clamp tightly fixed.

Through adopting the above technical scheme, when carrying out the centre gripping of work piece, drive the central removal of jack catch seat towards the chuck body through jack catch drive structure, thereby the jack catch seat drives jack catch main part and jack catch head and moves towards the center of chuck body, the jack catch head supports tightly with the work piece and fixes the work piece, when the jack catch head appears wearing and tearing and can't press from both sides tight work piece, the staff only needs to dismantle the jack catch head from the jack catch main part, change the jack catch head, if the jack catch main part appears damaging, also only need to change the jack catch main part, thereby it changes to the whole of activity jack catch not to need, thereby effectively reduce unnecessary extravagant, practice thrift manufacturing cost, improve the utilization ratio to the activity jack catch.

It is optional, a plurality of counter bores have been seted up in the jack catch main part, and a plurality of counter bores are arranged along the length direction of jack catch main part, a plurality of screw holes with each counter bore looks adaptation are seted up correspondingly on the jack catch seat, each wear to be equipped with hexagon socket head cap screw in the counter bore, hexagon socket head cap screw passes through screw hole and jack catch seat threaded connection, the spread groove has been seted up on the jack catch main part is close to the terminal surface of jack catch head, the one side of the nearly jack catch main part of jack catch head rest is fixed to be provided with and the connecting block, the connecting block is inserted and is located in the spread groove, is close to the counter bore through connection groove of jack catch head, just set up the through-hole that supplies hexagon socket head cap screw to pass on the connecting block.

By adopting the technical scheme, when the jaw main body is fixedly connected with the jaw seat, the counter bores are aligned with the connecting holes, the hexagon socket head cap bolts penetrate through the counter bores, and the hexagon socket head cap bolts are screwed to fixedly connect the jaw main body and the jaw seat through threads; subsequently, when can carry out the connection of jack catch main part and jack catch head and fix, aim at the spread groove with the connecting block and insert in the spread groove, afterwards, insert hexagon socket head cap screw in being close to the counter sink hole of spread groove, hexagon socket head cap screw thread connection is passed through the through-hole of connecting block to hexagon socket cap, fixes jack catch head and jack catch main part simultaneously.

Optionally, the chuck body is kept away from to the jack catch seat and the one-level constant head tank has been seted up on the terminal surface, the both ends of one-level constant head tank run through jack catch seat length direction's both sides wall, the fixed one-level locating piece that is provided with and one-level constant head tank looks adaptation on the outer wall that is close to the jack catch seat of jack catch main part.

Through adopting above-mentioned technical scheme, when carrying out the connection between jack catch main part and the jack catch seat, aim at the one-level locating piece in the one-level constant head tank, the installation location between jack catch main part and the jack catch seat of being convenient for improves the convenience of installation.

Optionally, a second-stage positioning groove is formed in the bottom surface, close to the claw seat, of the claw body, the second-stage positioning groove extends along the length direction of the claw body and penetrates through two end faces of the movable claw in the length direction, and a second-stage positioning block matched with the second-stage positioning groove is fixedly arranged on the end face, close to the claw body, of the claw seat.

Through adopting above-mentioned technical scheme, the combination of first constant head tank and second constant head tank carries out accurate location to the mounted position of jack catch main part and jack catch seat, further improves the convenience of the installation location between jack catch main part and the jack catch seat.

Optionally, the top wall of the jaw body is stepped, the heights of the two ends of the jaw body in the length direction are different, two jaw heads of each movable jaw are arranged at the two ends of the jaw body in the length direction, and the two end faces of each jaw head in the height direction are flush with the jaw body.

Through adopting above-mentioned technical scheme, the jack catch head is all installed at jack catch main part length direction's both ends, when the jack catch head of one end wearing and tearing, can carry out the clamp of work piece with the jack catch head of the other end and fix for movable jack catch can obtain make full use of. The two clamping jaw heads have different heights, so that workpieces with different lengths can be conveniently clamped, and the applicability of the movable clamping jaw is improved.

Optionally, the bilateral symmetry of the jaw head, far away from the one end of the jaw body, is provided with inclined planes, the inclined planes are located on the two sides of the movable jaw in the length direction, and the width of the jaw head is gradually reduced from the direction far away from the jaw body.

Through adopting above-mentioned technical scheme for what the central direction that the jack catch head on the three movable jaw can move towards the chuck body is pressed close to more, thereby makes movable jaw can press from both sides tight fixedly to the work piece of minor diameter size.

Optionally, an arc-shaped groove is formed in the end face, away from the jaw body, of the jaw head, and the arc-shaped groove extends along the height direction of the jaw head.

Through adopting above-mentioned technical scheme, the setting of arc wall can improve the tight fixed effect of clamp of jack catch head to axle type work piece for the difficult condition that appears skidding of work piece under the centre gripping of activity jack catch.

Optionally, a plurality of V-shaped grooves are formed in the end surface of the jaw head, which is far away from the jaw body, and the V-shaped grooves are arranged along the height direction of the jaw head and penetrate through the arc-shaped groove.

By adopting the technical scheme, the clamping and fixing effect of the clamping jaw head on the special-shaped workpiece is improved by the arrangement of the V-shaped groove, the V-shaped groove can clamp and tightly support the edge of the workpiece, and the clamped workpiece is not easy to slip.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of detachable connection among the jaw head, the jaw main body and the jaw seat, unnecessary waste is effectively reduced, the production cost is saved, and the utilization rate of the movable jaw is improved;

2. the primary positioning groove and the secondary positioning groove are arranged, so that the mounting positions of the jaw main body and the jaw seat are accurately positioned, and the convenience of mounting and positioning between the jaw main body and the jaw seat is improved;

3. through setting up arc wall and "V" shape groove, improve the fixed effect of movable jack catch to the centre gripping of work piece for difficult slipping under the centre gripping of three-jaw chuck.

Drawings

Fig. 1 is a schematic structural diagram of an overall structure of an anti-skid detachable three-jaw chuck according to an embodiment of the application.

Fig. 2 is a schematic view of the overall structure of the movable jaw in the embodiment of the application.

Fig. 3 is an exploded view of the overall structure of the movable jaw in the embodiment of the present application.

Description of reference numerals: 1. a movable jaw; 11. a pawl seat; 111. a threaded hole; 112. a first-stage positioning groove; 113. a secondary positioning block; 12. a jaw body; 121. a countersunk hole; 122. a hexagon socket head cap screw; 123. a first-stage positioning block; 124. a secondary positioning groove; 125. connecting grooves; 13. a jaw head; 131. connecting blocks; 1311. a through hole; 132. an inclined surface; 133. an arc-shaped slot; 134. a "V" shaped groove; 2. a chuck body.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses three-jaw chuck can be dismantled in antiskid. Referring to fig. 1, the anti-slip detachable three-jaw chuck comprises a chuck body 2, three movable jaws 1 circumferentially and uniformly distributed on the chuck body 2, and a jaw driving structure (not shown in the figure) installed in the chuck body 2, wherein the movable jaws 1 are connected with a jaw driving mechanism, and the jaw driving mechanism is used for driving the movable jaws 1 to move along the radial direction of the chuck body 2. It should be noted that, the claw driving structure is related to the prior art, and redundant description is not repeated in this embodiment.

Referring to fig. 1 and 2, each movable jaw 1 includes a jaw base 11, a jaw body 12, and two jaw heads 13. The jaw seat 11 is connected with the chuck body 2 in a sliding manner, the output end of the jaw driving structure is connected with the jaw seat 11, and the jaw driving structure is used for driving the jaw seat 11 to move along the radial direction of the chuck body 2. The jaw body 12 is mounted on the end surface of the jaw base 11 away from the chuck body 2, one jaw head 13 is mounted on one end surface of the jaw body 12 in the length direction, and the other jaw head 13 is mounted on the other end surface of the jaw body 12 in the length direction.

Referring to fig. 1 and 3, in order to facilitate installation and positioning between the jaw seat 11 and the jaw body 12, a first-stage positioning groove 112 is formed in an end surface of the jaw seat 11 away from the chuck body 2, the first-stage positioning groove 112 is located in a middle portion of the jaw seat 11, and two side walls of the jaw seat 11 in a length direction are penetrated by the first-stage positioning groove 112. A primary positioning block 123 is integrally formed on the outer wall of the jaw body 12 close to the jaw seat 11. The first-level locating block 123 is matched with the first-level locating groove 112, when the jaw body 12 is installed on the jaw seat 11, the first-level locating block 123 is located in the first-level locating groove 112, and the outer wall of the first-level locating block 123 is attached to the inner wall of the first-level locating groove 112. A second-stage positioning block 113 is integrally formed in the middle of the end face of the jaw base 11 close to the jaw body 12, and the second-stage positioning block 113 extends along the length direction of the jaw base 11 and is distributed on two sides of the first-stage positioning groove 112. The end surface of the jaw body 12 close to the jaw seat 11 is provided with a second-stage positioning groove 124, and the second-stage positioning groove 124 extends along the length direction of the jaw body 12 and penetrates through two end surfaces of the movable jaw 1 in the length direction. The second-stage positioning block 113 is matched with the second-stage positioning groove 124, when the jaw body 12 is mounted on the jaw seat 11, the second-stage positioning block 113 is located in the second-stage positioning groove 124, and the outer wall of the second-stage positioning block 113 is attached to the inner wall of the second-stage positioning groove 124.

Referring to fig. 2 and 3, the heights of both ends of the jaw body 12 in the length direction are different, so that the top wall of the jaw body 12 is stepped. Two counter bores 121 are formed in the end face of the jaw seat 11 of the jaw body 12, and the two counter bores 121 are formed in step faces of the jaw body 12 at different heights. The jaw seat 11 is provided with a threaded hole 111 adapted to each countersunk hole 121, an inner hexagonal bolt 122 penetrates through the countersunk hole 121, and the jaw body 12 is fixed to the jaw seat 11 through the inner hexagonal bolt 122.

Referring to fig. 2 and 3, a connection block 131 is integrally formed on one surface of the jaw body 12 close to the jaw head 13, a connection groove 125 matched with the connection block 131 is formed on an end surface of the jaw body 12 close to each jaw head 13, and each counter sink 121 penetrates through the connection groove 125. The connecting block 131 is provided with a through hole 1311 for the socket head screw 122 to pass through. When the jaw head 13 is mounted on the jaw body 12, the connecting block 131 is inserted into the connecting groove 125, the outer wall of the connecting block 131 is attached to the inner wall of the connecting groove 125, the through hole 1311 is coaxial with the counter bore 121, and the hexagon socket head screw 122 is inserted into the through hole 1311.

Referring to fig. 1 and 3, inclined surfaces 132 are symmetrically formed on both sides of one end of the jaw head 13 away from the jaw body 12, the inclined surfaces 132 are located on both sides of the movable jaw 1 in the length direction, and the width of the jaw head 13 is gradually reduced from the direction away from the jaw body 12, so that when the jaw head 13 moves toward the center of the chuck body 2, each jaw head 13 can be closer. In order to improve the clamping and fixing effect of the jaw head 13 on the workpiece, an arc-shaped groove 133 is formed in the end face, away from the jaw body 12, of the jaw head 13, and the arc-shaped groove 133 extends along the height direction of the jaw head 13. A plurality of V-shaped grooves 134 are formed in the end face, away from the jaw body 12, of the jaw head 13, each V-shaped groove 134 extends along the width direction of the jaw head 13, the V-shaped grooves 134 are evenly distributed along the height direction of the jaw head 13, and each V-shaped groove 134 penetrates through the arc-shaped groove 133.

The implementation principle of the three-jaw chuck can be dismantled in this application embodiment to antiskid does: the staff installs jack catch main part 12 and jack catch head 13 on jack catch seat 11 through hexagon socket head cap screw 122, when carrying out the centre gripping of work piece, drive jack catch seat 11 through jack catch drive structure and move towards the center of chuck body 2, thereby jack catch seat 11 drives jack catch main part 12 and jack catch head 13 and moves towards the center of chuck body 2, jack catch head 13 supports tightly with the work piece and fixes the work piece, when jack catch head 13 appears wearing and tearing and can't press from both sides tight work piece, the staff only need to dismantle jack catch head 13 from jack catch main part 12, change jack catch head 13, if jack catch main part 12 appears damaging, also only need to change jack catch main part 12, thereby do not need to change movable jack catch 1's whole, thereby effectively reduce the unnecessary waste, practice thrift manufacturing cost, improve the utilization ratio to movable jack catch 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a three-jaw chuck can be dismantled in antiskid, includes chuck body (2), movable jack catch (1) and the jack catch drive structure of installing in chuck body (2) that three circumference equipartition set up on chuck body (2), its characterized in that: each activity jack catch (1) is including jack catch seat (11), jack catch main part (12) and jack catch head (13), jack catch seat (11) and chuck body (2) sliding connection, jack catch seat (11) are connected with jack catch drive structure, jack catch drive structure is used for driving the radial movement of jack catch seat (11) along chuck body (2), jack catch main part (12) can be dismantled and connect on the terminal surface of chuck body (2) is kept away from in jack catch seat (11), jack catch head (13) can be dismantled and connect on jack catch main part (12) length direction's terminal surface, jack catch head (13) are used for pressing from both sides tight fixedly of work piece.

2. The anti-slip removable three-jaw chuck according to claim 1, wherein: the jaw main body (12) is provided with a plurality of counter bores (121), the counter bores (121) are arranged along the length direction of the jaw main body (12), a plurality of threaded holes (111) matched with the counter bores (121) are correspondingly formed in the jaw seat (11), inner hexagon bolts (122) penetrate through the counter bores (121), the inner hexagonal bolt (122) is in threaded connection with the jaw seat (11) through a threaded hole (111), the end surface of the jaw main body (12) close to the jaw head (13) is provided with a connecting groove (125), one surface of the jaw head (13) close to the jaw body (12) is fixedly provided with a connecting block (131), the connecting block (131) is inserted in the connecting groove (125), a counter bore (121) close to the jaw head (13) penetrates through the connecting groove (125), and a through hole (1311) for the inner hexagon bolt (122) to pass through is formed in the connecting block (131).

3. The anti-slip removable three-jaw chuck according to claim 2, wherein: one-level constant head tank (112) have been seted up on the terminal surface of chuck body (2) is kept away from in jack catch seat (11), the both ends of one-level constant head tank (112) run through jack catch seat (11) length direction's both sides wall, fixed one-level locating piece (123) that are provided with and one-level constant head tank (112) looks adaptation on the outer wall of jack catch main part (12) that is close to jack catch seat (11).

4. The anti-slip removable three-jaw chuck according to claim 3, wherein: the clamping jaw is characterized in that a second-stage positioning groove (124) is formed in the bottom surface, close to the clamping jaw seat (11), of the clamping jaw main body (12), the second-stage positioning groove (124) extends along the length direction of the clamping jaw main body (12) and penetrates through two end faces of the movable clamping jaw (1) in the length direction, and a second-stage positioning block (113) matched with the second-stage positioning groove (124) is fixedly arranged on the end face, close to the clamping jaw main body (12), of the clamping jaw seat (11).

5. The anti-slip removable three-jaw chuck according to claim 2, wherein: the roof of jack catch main part (12) is the step shape, the highly difference at jack catch main part (12) length direction both ends, each the jack catch head (13) of activity jack catch (1) are provided with two, two install in jack catch main part (12) length direction's both ends jack catch head (13), each the both ends face and jack catch main part (12) looks parallel and level of jack catch head (13) direction of height.

6. The anti-slip removable three-jaw chuck according to claim 5, wherein: the bilateral symmetry of the one end of jack catch main part (12) is kept away from in jack catch head (13) is provided with inclined plane (132), inclined plane (132) are located movable jack catch (1) length direction's both sides, the width of jack catch head (13) is from the direction convergent setting of keeping away from jack catch main part (12).

7. The anti-slip removable three-jaw chuck according to claim 6, wherein: the end face, away from the jaw body (12), of the jaw head (13) is provided with an arc-shaped groove (133), and the arc-shaped groove (133) extends along the height direction of the jaw head (13).

8. The anti-slip removable three-jaw chuck according to claim 7, wherein: a plurality of V-shaped grooves (134) are formed in the end face, far away from the jaw body (12), of the jaw head (13), the V-shaped grooves (134) are arranged in the height direction of the jaw head (13), and the V-shaped grooves (134) penetrate through the arc-shaped grooves (133).

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