CN214517656U

CN214517656U - Chuck body easy to maintain and four-jaw chuck applying same

Info

Publication number: CN214517656U
Application number: CN202120858484.9U
Authority: CN
Inventors: 牟燕峰; 李小农; 朱其楚
Original assignee: Changzhou Biyoute Machinery Technology Co ltd
Current assignee: Changzhou Biyoute Machinery Technology Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2021-10-29
Anticipated expiration: 2031-04-24

Abstract

The utility model relates to an easy-to-maintain's chuck body and use four-jaw chuck of this chuck body belongs to the field of chuck, its the terminal surface of chuck body radially has seted up a plurality of mounting grooves along self, be provided with the claw seat that is used for installing the jack catch in the mounting groove, can dismantle on mounting groove length direction's the both sides inner wall and be connected with first antifriction plate, be formed with the groove that slides with claw seat looks adaptation between chuck body and the first antifriction plate, claw seat sliding connection is in the inslot that slides, first antifriction plate laminates with the claw seat mutually. This application has the wear resistance and the life who improve the chuck body, is convenient for maintain the chuck body, reduces the effect of maintenance cost.

Description

Chuck body easy to maintain and four-jaw chuck applying same

Technical Field

The application relates to the field of chucks, in particular to a chuck body easy to maintain and a four-jaw chuck applying the chuck body.

Background

Chucks are mechanical devices used for clamping workpieces on machining equipment such as machine tools. The chuck clamps and fixes the workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on the chuck body.

The related chuck is generally composed of a chuck body, movable jaws and a jaw driving mechanism. The end face of the chuck body is radially provided with a plurality of sliding grooves matched with the movable clamping jaws along the self, the base of each movable clamping jaw is positioned in each sliding groove, each movable clamping jaw is connected with the chuck body in a sliding mode through each sliding groove, the clamping jaw driving mechanism is installed in the chuck body, and the output end of each clamping jaw driving mechanism is connected with the clamping jaws and used for driving the movable clamping jaws to move along the radial direction of the chuck body.

Aiming at the related technologies, the inventor thinks that the inner wall of the sliding groove of the chuck body is easy to wear and scrap in the long-time sliding friction movement process of the base of the movable clamping jaw and the chuck body, the whole chuck body needs to be replaced, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that a sliding groove on a chuck body is easy to wear, and the maintenance cost of the chuck body is high, the application provides the chuck body easy to maintain and the four-jaw chuck applying the chuck body.

On the one hand, the chuck body easy to maintain that this application provided adopts following technical scheme:

the utility model provides an easy-to-maintain's chuck body, a plurality of mounting grooves have been seted up along the footpath of self to the terminal surface of chuck body, be provided with the claw seat that is used for installing the jack catch in the mounting groove, can dismantle on mounting groove length direction's the both sides inner wall and be connected with first antifriction plate, be formed with the groove of sliding with claw seat looks adaptation between chuck body and the first antifriction plate, claw seat sliding connection is in the inslot that slides, first antifriction plate laminates with the claw seat mutually.

Through adopting above-mentioned technical scheme, the jack catch is installed on the claw seat, slides the inslot on the claw seat when sliding, and first antifriction plate and claw seat carry out frictional contact, through the wear resistance who improves first antifriction plate, and then effectively improve the life of chuck body, and the inner wall in the groove of sliding is difficult for appearing wearing and tearing. When the first wear-resisting plate is worn and scrapped, a worker can replace the first wear-resisting plate, so that the whole chuck body is not required to be replaced and maintained, and the maintenance cost of the chuck body is effectively reduced.

Optionally, a connecting elongated slot is formed in the bottom surface of the sliding slot, the connecting elongated slot extends along the radial direction of the chuck body, a second wear-resisting plate is detachably connected in the connecting elongated slot, and one side wall of the second wear-resisting plate is attached to the outer wall of the claw seat.

Through adopting above-mentioned technical scheme, the setting of second antifriction plate improves the wear resistance of the tank bottom surface that slides for the difficult wearing and tearing in the tank that slides of chuck body, and can dismantle between second antifriction plate and the chuck body and be connected, when wearing and tearing damage appears in the second antifriction plate, is convenient for change the second antifriction plate and maintains the chuck body.

Optionally, step surfaces for installing the first wear-resisting plates are formed on inner walls of two sides of the installation groove in the length direction, at least two positioning pins are fixed on the step surfaces, and positioning holes matched with the positioning pins are formed in the first wear-resisting plates.

By adopting the technical scheme, the step surface provides better support for the first wear-resisting plate, so that the connection stability between the first wear-resisting plate and the chuck body is ensured; the setting of the locating hole of locating pin improves the installation convenience and the guarantee installation accuracy of first antifriction plate.

Optionally, a lubrication groove is formed in one surface, close to the claw seat, of the first wear-resisting plate, the two ends of the lubrication groove in the length direction penetrate through the first wear-resisting plate, and a lubrication groove corresponding to the lubrication groove is formed in the inner wall of the mounting groove.

Through adopting above-mentioned technical scheme, be convenient for through the lubrication groove to the inslot interpolation lubricating oil that slides, on the lubrication has the lubrication groove to flow into lubrication groove for lubricating oil can be paintd between the inner wall of claw seat and the groove that slides with more even and comprehensive adhesion.

On the other hand, the four-jaw chuck provided by the application adopts the following technical scheme:

the utility model provides a four-jaw chuck, includes the chuck body, still include jack catch and actuating mechanism, the last mounting groove of chuck body is provided with four, four the mounting groove is evenly arranged along the circumference of chuck body, the connection can be dismantled on the claw seat to the jack catch, actuating mechanism installs in the chuck body, actuating mechanism's output is connected fixedly with the claw seat, actuating mechanism is used for driving the radial movement of jack catch edge chuck body.

By adopting the technical scheme, the driving mechanism drives the clamping jaws to move along the radial direction of the chuck body through the jaw seats, so that the workpiece is clamped; the jack catch can be dismantled and connect on the claw seat, when the damage appears in the jack catch, only need change the jack catch that damages can for the maintenance of chuck is convenient, reduces the cost of maintaining.

Optionally, a flexible protective cover is arranged on the chuck body, the flexible protective cover covers the top of the mounting groove, one end of the flexible protective cover is fixedly connected with the clamping jaw, and the other end of the flexible protective cover is fixedly connected with the circumferential side wall of the chuck body.

Through adopting above-mentioned technical scheme, the setting of flexible protection casing plays the effect of protection to the groove that slides for foreign matter such as external dust is difficult for getting into the inslot that slides, ensures the good operation of chuck.

Optionally, a positioning flat key is arranged between the jaw and the jaw seat, a positioning key groove matched with the positioning flat key is formed in the jaw, a connecting groove matched with the positioning flat key is formed in the jaw seat, and the positioning flat key is located between the connecting groove and the positioning key groove.

Through adopting above-mentioned technical scheme, connect the location through the location parallel key between jack catch and the claw seat, improve the installation convenience of jack catch and the installation accuracy of guarantee jack catch.

Optionally, the clamping jaws include a pair of inner clamping jaws arranged oppositely and a pair of outer clamping jaws arranged oppositely, and the outer clamping jaws and the inner clamping jaws are arranged in a staggered manner in the axial direction of the chuck body.

Through adopting above-mentioned technical scheme, under the condition that does not increase the chuck body size, increased the home range of jack catch, the removal of inside and outside jack catch is difficult for appearing interfering, improves the jack catch and still has good centre gripping fixed effect to the less work piece of diameter size to the centre gripping scope of work piece size.

In summary, the present application includes at least one of the following advantageous technical effects;

1. by arranging the first wear-resisting plate and the second wear-resisting plate, the wear resistance of the inner wall of the sliding groove of the chuck body is improved, the first wear-resisting plate and the second wear-resisting plate are convenient to maintain and replace, and the maintenance cost of the chuck body is effectively reduced;

2. by arranging the positioning pin and the positioning hole, the mounting convenience of the first wear-resisting plate is improved, and the mounting precision is guaranteed;

3. through setting up flexible protection casing, play the effect of protection to the groove that slides for foreign matter such as external dust is difficult for getting into the inslot that slides, ensures the good operation of chuck.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a chuck body easy to maintain in an embodiment of the present application.

Fig. 2 is an exploded view showing an internal structure of a mounting groove in the embodiment of the present application.

Fig. 3 is a schematic view of the overall structure of a four-jaw chuck according to an embodiment of the present application.

Fig. 4 is an exploded view showing a positioning structure between the claw and the claw holder in the embodiment of the present application.

Description of reference numerals: 1. a chuck body; 11. mounting grooves; 111. a sliding groove; 112. a long connecting groove; 113. lubricating the grooves; 114. a step surface; 12. a first wear plate; 121. positioning holes; 122. positioning pins; 123. a lubrication groove; 124. a first connecting bolt; 13. a second wear plate; 131. a second connecting bolt; 14. a flexible protective cover; 15. a central bore; 2. a claw seat; 21. connecting grooves; 22. positioning a flat key; 23. a positioning key groove; 3. a claw; 31. an inner jaw; 32. and (4) an outer jaw.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a chuck body easy to maintain. Referring to fig. 1 and 2, a plurality of mounting grooves 11 are formed in an axial end face of an easily maintained chuck body, the mounting grooves 11 extend in a radial direction of the chuck body 1, and a central hole 15 for a workpiece to pass through is formed in a central axis of the chuck body 1. In this embodiment, the number of the mounting grooves 11 is four, and the four mounting grooves 11 are uniformly distributed along the circumferential direction of the chuck body 1. Can dismantle on 11 length direction's of mounting groove both sides inner wall and be connected with first antifriction plate 12, be formed with between first antifriction plate 12 and the chuck body 1 and slide groove 111, sliding connection has the claw seat 2 with the groove 111 looks adaptation that slides in the groove 111 that slides, and claw seat 2 is used for installing jack catch 3.

Referring to fig. 1 and 2, the mounting groove 11 is a stepped groove, the cross-sectional shape of the mounting groove 11 is an inverted "T" shape, the groove width of the mounting groove 11 is gradually increased toward a direction away from the chuck body 1, stepped surfaces 114 are formed on both sides of the mounting groove 11 in the length direction, and the first wear plate 12 is mounted on the stepped surfaces 114. When the first wear plate 12 is mounted on the chuck body 1, the cross-sectional shape of the sliding groove 111 is "T" shape, so that the movement in the sliding groove 111 on the claw seat 2 is more stable and is not easy to disengage.

Referring to fig. 1 and 2, at least two positioning pins 122 are fixed on the step surface 114, in this embodiment, two positioning pins 122 are provided, and correspondingly, the first wear plate 12 is provided with positioning holes 121 adapted to the positioning pins 122. A plurality of first connecting bolts 124 are arranged between the first wear-resistant plate 12 and the chuck body 1, the first connecting bolts 124 are uniformly distributed along the length direction of the first wear-resistant plate 12, and the first wear-resistant plate 12 and the chuck body 1 are detachably connected through the first connecting bolts 124. One side of the first wear plate 12 close to the claw seat 2 is provided with a lubrication groove 123, two ends of the lubrication groove 123 in the length direction penetrate through the first wear plate 12, and the inside of the mounting groove 11 is provided with a lubrication groove 113 corresponding to the lubrication groove 123. The lubricating groove 123 and the lubricating groove 113 facilitate the addition of lubricating oil between the pawl seat 2 and the chuck body 1, so that the sliding of the pawl seat 2 is smoother.

Referring to fig. 1 and 2, two long connecting grooves 112 are formed in the bottom surface of the mounting groove 11, and each long connecting groove 112 extends along the radial direction of the chuck body 1. The second wear-resisting plates 13 are mounted in the long connecting groove 112, a plurality of second connecting bolts 131 are arranged between the second wear-resisting plates 13 and the chuck body 1, the second connecting bolts 131 are uniformly distributed along the length direction of the second wear-resisting plates 13, the second wear-resisting plates 13 and the chuck body 1 are detachably connected through the second connecting bolts 131, and one surfaces, far away from the long connecting groove 112, of the second wear-resisting plates 13 and the bottom surfaces of the mounting grooves 11 are located on the same plane, so that the second wear-resisting plates 13 can be in good contact with the jaw seats 2. In this embodiment, the first wear plate 12 and the second wear plate 13 are both made of high manganese alloy material. The first wear plate 12 and the second wear plate 13 enable the inner wall of the sliding groove 111 to have good wear resistance, and when the first wear plate 12 and the second wear plate 13 are worn, the maintenance cost of the chuck body 1 can be reduced by replacing the first wear plate 12 and the second wear plate 13.

The implementation principle of the chuck body easy to maintain in the embodiment of the application is as follows: jaw 3 is installed on claw seat 2, and when sliding in groove 111 slides on claw seat 2, first antifriction plate 12 and second antifriction plate 13 and claw seat 2 carry out frictional contact, and first antifriction plate 12 and second antifriction plate 13 have strengthened the wear resistance of groove 111 that slides, and then effectively improve the life of chuck body 1, and the inner wall of groove 111 that slides is difficult for appearing wearing and tearing. When the first wear-resisting plate 12 or the second wear-resisting plate 13 is worn and scrapped, a worker can replace the first wear-resisting plate 12 or the second wear-resisting plate 13, so that the whole chuck body 1 does not need to be replaced and maintained, and the maintenance cost of the chuck body 1 is effectively reduced.

The embodiment of the application discloses a four-jaw chuck. Referring to fig. 3, a four-jaw chuck includes jaws 3, a driving mechanism (not shown in the figure) and the chuck body 1, wherein the jaws 3 are detachably connected to jaw seats 2 through bolts, the driving mechanism is installed inside the chuck body 1, an output end of the driving mechanism is connected to the jaw seats 2, and the driving mechanism is used for driving the chuck to move along the radial direction of the chuck body 1. It should be noted that the driving mechanism is related to the prior art, and is therefore described in detail in this embodiment. The jaw 3 comprises a pair of outer jaws 32 and a pair of inner jaws 31 which are oppositely arranged, the outer jaws 32 and the inner jaws 31 are arranged in a staggered manner in the axial direction of the chuck body 1, and the inner jaws 31 are positioned on one side of the outer jaws 32 close to the chuck body 1.

Referring to fig. 3, a flexible shield 14 is installed on the chuck body 1 near each jaw 3 to shield the sliding groove 111. The flexible protective cover 14 covers the top of the opening of the sliding groove 111, one end of the flexible protective cover 14 is fixedly connected with the clamping jaw 3 through a screw, and the other end of the flexible protective cover 14 is fixedly connected with the circumferential outer wall of the chuck body 1 through a screw. In the embodiment, the flexible protective cover 14 is an organ cover, so that the flexible protective cover 14 has good telescopic performance and is not easy to interfere with the movement of the jaws 3.

Referring to fig. 3 and 4, be provided with location structure between jack catch 3 and the claw seat 2, location structure includes location parallel key 22, offer on the jack catch 3 with location parallel key 22 looks adaptation location keyway 23, claw seat 2 offers with the spread groove 21 of location parallel key 22 looks adaptation, the length direction of spread groove 21 is mutually perpendicular with the length direction of claw seat 2, claw seat 2 is run through at the both ends of spread groove 21 length direction, location parallel key 22 scarf joint is between spread groove 21 and location keyway 23.

The implementation principle of the four-jaw chuck in the embodiment of the application is as follows: actuating mechanism passes through the radial movement of claw seat 2 drive jack catch 3 along chuck body 1, realizes then that 3 can dismantle the connection on claw seat 2 of jack catch to the clamp of work piece, when jack catch 3 or claw seat 2 appear damaging, only need change the jack catch 3 or the claw seat 2 of damage can for the maintenance of chuck is convenient, reduces the cost of maintaining. The claw 3 and the claw seat 2 are connected and positioned through the positioning flat key 22, so that the installation convenience of the claw 3 is improved, and the installation precision of the claw 3 is guaranteed. The inner and outer clamping jaws 32 are arranged in a staggered manner to improve the clamping range of the clamping jaws 3 for the size of a workpiece.

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

1. The utility model provides an easy chuck body of maintaining which characterized in that: the terminal surface of chuck body (1) radially has seted up a plurality of mounting grooves (11) along self, be provided with claw seat (2) that are used for installing jack catch (3) in mounting groove (11), can dismantle on mounting groove (11) length direction's the both sides inner wall and be connected with first antifriction plate (12), be formed with between chuck body (1) and first antifriction plate (12) the groove (111) that slides with claw seat (2) looks adaptation, claw seat (2) sliding connection is in the groove (111) that slides, first antifriction plate (12) laminate with claw seat (2) mutually.

2. An easily serviceable chuck body according to claim 1 wherein: the bottom surface of the sliding groove (111) is provided with a connecting long groove (112), the connecting long groove (112) is arranged along the radial extension of the chuck body (1), a second wear-resisting plate (13) is detachably connected in the connecting long groove (112), and one side wall of the second wear-resisting plate (13) is attached to the outer wall of the claw seat (2).

3. An easily serviceable chuck body according to claim 2 wherein: step surfaces (114) used for installing the first wear-resisting plates (12) are formed on the inner walls of the two sides of the length direction of the installation groove (11), at least two positioning pins (122) are fixed on the step surfaces (114), and positioning holes (121) matched with the positioning pins (122) are formed in the first wear-resisting plates (12).

4. An easily serviceable chuck body according to claim 1 wherein: one surface, close to the claw seat (2), of the first wear-resisting plate (12) is provided with a lubricating groove (123), two ends of the lubricating groove (123) in the length direction penetrate through the first wear-resisting plate (12), and the inner wall of the mounting groove (11) is provided with a lubricating groove (113) corresponding to the lubricating groove (123).

5. A four-jaw chuck comprising a chuck body (1) according to any one of claims 1 to 4, characterized in that: still include jack catch (3) and actuating mechanism, mounting groove (11) on the chuck body (1) are provided with four, four evenly arrange along the circumference of chuck body (1) mounting groove (11), connection can be dismantled on claw seat (2) in jack catch (3), actuating mechanism installs in chuck body (1), actuating mechanism's output is connected fixedly with claw seat (2), actuating mechanism is used for driving radial movement of jack catch (3) along chuck body (1).

6. The four-jaw chuck according to claim 5, wherein: be provided with flexible protection casing (14) on the chuck body (1), the top in mounting groove (11) is established in flexible protection casing (14) cover, the one end and jack catch (3) fixed connection of flexible protection casing (14), the other end and chuck body (1) circumference lateral wall fixed connection of flexible protection casing (14).

7. The four-jaw chuck according to claim 5, wherein: be provided with location parallel key (22) between jack catch (3) and claw seat (2), set up on jack catch (3) with location parallel key (22) looks adaptation location keyway (23), claw seat (2) set up with location parallel key (22) looks adaptation spread groove (21), location parallel key (22) are located between spread groove (21) and location keyway (23).

8. The four-jaw chuck according to claim 5, wherein: the clamping jaw (3) comprises a pair of inner clamping jaws (31) and a pair of outer clamping jaws (32), wherein the pair of inner clamping jaws (31) are arranged oppositely, and the pair of outer clamping jaws (32) and the pair of inner clamping jaws (31) are arranged in a staggered mode in the axial direction of the chuck body (1).