CN210335197U

CN210335197U - Internal pushing type chuck

Info

Publication number: CN210335197U
Application number: CN201921251960.XU
Authority: CN
Inventors: 冯青云
Original assignee: Changzhou Pufa Machinery Co Ltd
Current assignee: Changzhou Pufa Machinery Co Ltd
Priority date: 2019-08-03
Filing date: 2019-08-03
Publication date: 2020-04-17
Anticipated expiration: 2029-08-03

Abstract

The utility model relates to an interior pushing-type chuck. The interior pushing-type chuck includes the anchor clamps body, chuck and a propelling movement section of thick bamboo, the anchor clamps body is cylindric, is formed with in it and accepts the chamber, the promotion logical groove has been seted up to the specific tip of anchor clamps, the chuck include the centre gripping ring cover with connect in the dead lever on the centre gripping ring cover, be formed with the constant head tank in the centre gripping ring cover, the dead lever wear to locate accept the intracavity and be fixed in the specific tip of anchor clamps, a propelling movement section of thick bamboo set up with sliding in accept the intracavity to the cover is located on the anchor clamps, the protruding drive arch that is equipped with of one end of a propelling movement section of thick bamboo, the other end is formed with the propelling movement portion of holding, the drive arch is worn. The positioning precision of the inner pushing type clamping head on the round workpiece made of the copper material is high.

Description

Internal pushing type chuck

Technical Field

The utility model relates to an interior pushing-type chuck.

Background

During machining, it is often necessary to clamp a workpiece and then turn or mill it. In the process of clamping a workpiece, a chuck or a clamping jaw is often used for clamping the workpiece. In some occasions, a cylindrical clamping jaw is used for clamping a workpiece, and when the clamping jaw is pushed to clamp the workpiece, the clamping jaw is stressed to contract inwards to clamp the workpiece. However, in this case, when the outer diameter of the workpiece changes, the distance that the jaws push in the axial direction changes, so that the depth of the workpiece in the axial direction also changes, and the positioning accuracy of the workpiece is easily affected.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for an internally pushed collet with high positioning accuracy.

An inner pushing type chuck comprises a chuck body, a chuck and a pushing cylinder, wherein the chuck body is cylindrical, a containing cavity is formed in the chuck body, a pushing through groove is formed in the end part of the chuck body, the chuck comprises a clamping ring cover and a fixing rod connected to the clamping ring cover, a positioning groove is formed in the clamping ring cover, the fixing rod is arranged in the containing cavity in a penetrating manner and fixed at the end part of the chuck body, the pushing cylinder is arranged in the containing cavity in a sliding manner and sleeved on the chuck, a driving bulge is convexly arranged at one end of the pushing cylinder, a pushing part is formed at the other end of the pushing cylinder, the driving bulge is arranged in the pushing through groove of the chuck body in a penetrating manner, the pushing part is abutted against one side, away from the positioning groove, of the clamping ring cover, and the driving bulge is used for forcing the pushing cylinder to move along the axial direction of the chuck body when a force is applied, so that the pushing part pushes the clamping ring cover to, so as to clamp and fix the workpiece in the positioning groove.

In one embodiment, an opening communicated with the accommodating cavity is formed at one end of the clamp body, a fixed circular plate is formed at the other end of the clamp body, and the pushing through groove is formed in the fixed circular plate.

In one embodiment, a fixing hole is formed in the center of the fixing circular plate, and the fixing rod is inserted through and fixed in the fixing hole.

In one embodiment, the pushing through grooves are fan-shaped, the number of the pushing through grooves is three, the three pushing through grooves are arranged around the fixing hole, the number of the driving protrusions is three, and the three driving protrusions are respectively arranged in the three pushing through grooves in a penetrating mode.

In one embodiment, the cross section of the driving protrusion is fan-shaped, the pushing portion is circular, the end face of the pushing portion is a concave conical ring surface, and the conical ring surface abuts against the clamping ring cover.

In one embodiment, a connecting column is convexly arranged at the center of the clamping ring cover, the fixing rod is coaxially fixed on the connecting column, the fixing hole is a threaded hole, the fixing rod is a threaded column, the fixing rod is screwed in the fixing hole, and the end face of the connecting column abuts against the fixing circular plate.

In one embodiment, the diameter of the connecting column is larger than that of the fixing rod, the connecting column is arranged in the pushing cylinder in a penetrating mode, and the peripheral surface of the pushing cylinder is slidably abutted against the peripheral surface of the accommodating cavity.

In one embodiment, the clamping ring cover comprises a conical ring part and a circular ring part which are connected with each other, the connecting column is convexly arranged at the center of one side of the conical ring part, which is deviated from the circular ring part, and the surface of the conical ring part is abutted against the conical ring surface of the pushing cylinder.

In one embodiment, the positioning groove is a circular groove, and the positioning groove is located in the circular ring part and on one side of the clamping ring cover, which faces away from the pushing cylinder.

In one embodiment, the clamping ring cover has a plurality of dividing grooves formed on its periphery, and the dividing grooves extend from the circular ring portion to the conical ring portion.

When the inner pushing type chuck is used, the chuck body is fixed on the processing shaft. Then, put into the circular work piece that the copper product was made in the constant head tank of centre gripping ring cover, promote along the axial the drive is protruding, forces a propelling movement section of thick bamboo is followed the specific axial displacement of anchor clamps, a propelling movement section of thick bamboo is held in the propelling movement of propelling movement the shrink of centre gripping ring cover to the centre gripping is fixed the periphery of circular work piece in the constant head tank to the realization is to the centre gripping location of work piece. The pushing cylinder is positioned on the inner side of the clamp body, so that the pushing cylinder is an inner pushing type pushing cylinder. Because the fixture body is fixed on the processing shaft, and the circular workpiece is positioned in the positioning groove, the circular workpiece cannot axially shift relative to the processing shaft when clamped and positioned, so that the positioning precision of the workpiece is improved, and the subsequent processing precision is improved. The inner pushing type chuck is changed from a common inner pulling type positioning tool into an inner pushing type chuck, the parallelism of workpiece positioning is good, the influence of the outer diameter of a workpiece is avoided, the clamping distance is constant, and the machining precision is high.

Drawings

Fig. 1 is a perspective view of an embodiment of an internally pushed collet.

Fig. 2 is a perspective view of the push-in type collet shown in fig. 1 from another perspective.

Fig. 3 is a perspective exploded view of the internally pushed collet of fig. 1.

Fig. 4 is an exploded perspective view of the push-in collet of fig. 3 from another perspective.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model relates to an interior pushing-type chuck. For example, the inner pushing type chuck comprises a chuck body, a chuck and a pushing cylinder, wherein the chuck body is cylindrical, an accommodating cavity is formed in the chuck body, and a pushing through groove is formed in the end of the chuck body. For example, the chuck comprises a clamping ring cover and a fixing rod connected to the clamping ring cover, a positioning groove is formed in the clamping ring cover, and the fixing rod penetrates through the accommodating cavity and is fixed at the end of the chuck body. For example, the pushing cylinder is slidably disposed in the accommodating cavity and sleeved on the chuck, a driving protrusion is convexly disposed at one end of the pushing cylinder, a pushing portion is formed at the other end of the pushing cylinder, and the driving protrusion penetrates through the pushing through groove of the chuck body. For example, the pushing portion abuts against one side, away from the positioning groove, of the clamping ring cover, and the driving protrusion is used for forcing the pushing cylinder to move along the axial direction of the clamp body when being stressed, so that the pushing portion pushes the clamping ring cover to contract, and a workpiece in the positioning groove is clamped and fixed.

Referring to fig. 1 to 4, an inward-pushing chuck includes a chuck body 10, a chuck 20 and a pushing cylinder 30, the chuck body 10 is cylindrical, a receiving cavity 11 is formed in the chuck body 10, a pushing through groove 12 is formed at an end of the chuck body 10, the chuck 20 includes a clamping ring cover 21 and a fixing rod 22 connected to the clamping ring cover 21, a positioning groove 212 is formed in the clamping ring cover 21, the fixing rod 22 is inserted into the receiving cavity 11 and fixed at the end of the chuck body 10, the pushing cylinder 30 is slidably disposed in the receiving cavity 11 and sleeved on the chuck 20, a driving protrusion 31 is convexly disposed at one end of the pushing cylinder 30, a pushing portion 32 is formed at the other end of the pushing cylinder, the driving protrusion 31 is inserted into the pushing through groove 12 of the chuck body 10, the pushing portion 32 abuts against a side of the clamping ring cover 21 away from the positioning groove 212, the driving protrusion 31 is used for forcing the pushing cylinder 30 to move along an axial direction of the chuck body 10 when a force is applied, so that the pushing portion 32 pushes the clamping, to retain the workpiece in the retaining nest 212.

For example, the inner push type collet is used, for example, to fix the collet body 10 to a processing shaft. Then, a round workpiece made of copper material is placed into the positioning groove 212 of the retaining ring cover 21, the driving protrusion 31 is pushed in the axial direction, the pushing cylinder 30 is forced to move in the axial direction of the clamp body 10, the pushing portion 32 of the pushing cylinder 30 pushes the retaining ring cover 21 to contract, so as to clamp and fix the periphery of the round workpiece in the positioning groove 212, and thus the workpiece is clamped and positioned. Since the push cylinder 30 is located inside the clamp body 10, the push cylinder 30 is an inward push cylinder 30. Because the fixture body 10 is fixed on the processing shaft, and the circular workpiece is positioned in the positioning groove 212, the circular workpiece does not axially move relative to the processing shaft during clamping and positioning, so that the positioning precision of the workpiece is improved, and the subsequent processing precision is further improved. The inner pushing type chuck is changed from a common inner pulling type positioning tool into an inner pushing type chuck, the parallelism of workpiece positioning is good, the influence of the outer diameter of a workpiece is avoided, the clamping distance is constant, and the machining precision is high.

For example, in order to stably guide the push cylinder 30, an opening communicating with the receiving cavity 11 is formed at one end of the clamp body 10, a fixed circular plate 14 is formed at the other end, and the push through groove 12 is opened in the fixed circular plate 14. A fixing hole 141 is opened at the center of the fixing circular plate 14, and the fixing rod 22 is inserted and fixed in the fixing hole 141. The through grooves 12 are fan-shaped, the number of the through grooves 12 is three, the through grooves 12 are arranged around the fixing hole 141, the number of the driving protrusions 31 is three, and the three driving protrusions 31 are respectively arranged in the through grooves 12. The cross-section of the driving protrusion 31 is fan-shaped. Through setting up three promotion logical groove 12, when conveniently pushing away the installation of holding a section of thick bamboo 30, also can utilize three drive arch 31 atress simultaneously, can also utilize three drive arch 31 to lead to pushing away holding a section of thick bamboo 30 for pushing away holding a section of thick bamboo 30 and can follow axial displacement smoothly.

For example, to fix the chuck 20, the pushing portion 32 is circular, the end surface of the pushing portion 32 is a concave conical ring surface 321, and the conical ring surface 321 abuts against the chuck ring cover 21. The center of the clamping ring cover 21 is convexly provided with a connecting column 211, the fixing rod 22 is coaxially fixed on the connecting column 211, the fixing hole 141 is a threaded hole, the fixing rod 22 is a threaded column, the fixing rod 22 is screwed in the fixing hole 141, and the end face of the connecting column 211 abuts against the fixed circular plate 14. The diameter of the connection post 211 is larger than that of the fixing rod 22. The threaded columns and the threaded holes are arranged, so that the chuck 20 is convenient to fix. The connecting column 211 is disposed to fix the fixing rod 22 and to be abutted against the fixing circular plate 14 to position the clamping head 20.

For example, in order to facilitate the deformation of the retaining ring cover 21 and to facilitate the retaining of the workpiece made of copper material by the retaining ring cover 21, the connecting column 211 is inserted into the pushing cylinder 30, and the outer peripheral surface of the pushing cylinder 30 slidably abuts against the peripheral surface of the accommodating cavity 11. The clamping ring cover 21 comprises a conical ring part 214 and a circular ring part 215 which are connected with each other, the connecting column 211 is convexly arranged at the center of one side of the conical ring part 214 departing from the circular ring part 215, and the surface of the conical ring part 214 is propped against the conical ring surface 321 of the pushing cylinder 30. The positioning slot 212 is a circular slot, and the positioning slot 212 is located in the circular ring part 215 and is located on the side of the retaining ring cover 21 facing away from the pushing cylinder 30. The retaining ring cover 21 has a plurality of dividing grooves 218 formed on its periphery, and the dividing grooves 218 extend from the circular ring portion 215 to the tapered ring portion 214. By forming the plurality of dividing grooves 218 on the retaining ring cover 21, the retaining ring cover 21 can be elastically deformed in a trade manner, so as to inwardly contract and retain a workpiece made of copper material.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An inner pushing type chuck is characterized by comprising a chuck body, a chuck and a pushing cylinder, wherein the chuck body is cylindrical, a containing cavity is formed in the chuck body, a pushing through groove is formed in the end part of the chuck body, the chuck comprises a clamping ring cover and a fixing rod connected to the clamping ring cover, a positioning groove is formed in the clamping ring cover, the fixing rod is arranged in the containing cavity in a penetrating manner and fixed at the end part of the chuck body, the pushing cylinder is arranged in the containing cavity in a sliding manner and sleeved on the chuck, a driving bulge is convexly arranged at one end of the pushing cylinder, a pushing part is formed at the other end of the pushing cylinder, the driving bulge is arranged in the pushing through groove of the chuck body in a penetrating manner, the pushing part is abutted against one side, deviating from the positioning groove, of the clamping ring cover, and the driving bulge is used for forcing the pushing cylinder to move along the axial direction of the chuck body when being stressed, and enabling the pushing part to push the clamping ring cover to contract so as to clamp and fix the workpiece in the positioning groove.

2. A push-in type chuck according to claim 1, wherein an opening communicating with the receiving cavity is formed at one end of the chuck body, a fixed circular plate is formed at the other end, and the push through groove is opened at the fixed circular plate.

3. A push-in type chuck according to claim 2, wherein a fixing hole is opened at the center of the fixing circular plate, and the fixing rod is inserted and fixed in the fixing hole.

4. A push-in collet as claimed in claim 3, wherein said push through slots are fan-shaped, the number of said push through slots is three, said three push through slots are disposed around said fixing hole, the number of said drive protrusions is three, and said three drive protrusions are respectively inserted into said three push through slots.

5. A push-in type chuck according to claim 4, wherein the cross section of the driving protrusion is fan-shaped, the pushing portion is circular ring-shaped, the end surface of the pushing portion is a concave conical ring surface, and the conical ring surface abuts against the clamping ring cover.

6. The internally-pushed chuck according to claim 5, wherein a connecting post is protruded from a center of the clamping ring cover, the fixing rod is coaxially fixed to the connecting post, the fixing hole is a threaded hole, the fixing rod is a threaded post, the fixing rod is screwed into the fixing hole, and an end surface of the connecting post abuts against the fixed circular plate.

7. A push-in chuck according to claim 6, wherein the diameter of the connecting rod is larger than the diameter of the fixing rod, the connecting rod is inserted into the push-holding cylinder, and the outer peripheral surface of the push-holding cylinder slidably abuts against the peripheral surface of the accommodating cavity.

8. The internally-pushed chuck according to claim 7, wherein the clamping ring cover includes a conical ring portion and a circular ring portion connected to each other, the connecting column is protruded from a center of a side of the conical ring portion away from the circular ring portion, and a surface of the conical ring portion abuts against a conical ring surface of the pushing cylinder.

9. A push-in cartridge according to claim 8, wherein said detent is a circular groove located within said circular portion on a side of said grip ring cover facing away from said push-in cartridge.

10. A push-in collet as defined in claim 9, wherein said grip ring cover defines a plurality of dividing slots formed in a periphery thereof, said dividing slots extending from said annular portion to said tapered ring portion.