CN212444221U

CN212444221U - Quick chuck

Info

Publication number: CN212444221U
Application number: CN202021189659.3U
Authority: CN
Inventors: 杨红
Original assignee: Chengdu Sichuang Precision Machinery Co ltd
Current assignee: Chengdu Sichuang Precision Machinery Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-02
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to the technical field of machining parts, and discloses a quick chuck, which comprises a base, a clamping jaw arranged on the base and an outer sleeve which is sleeved outside the clamping jaw and is adjustably connected with the base; the base comprises a mounting column for mounting the clamping jaw, and external threads are arranged on the periphery of the mounting column; the clamping jaw is of a cylindrical structure, a through clamping hole is formed in the middle of the clamping jaw, a plurality of first expansion joints and second expansion joints which are longitudinally distributed at intervals are arranged on a clamping jaw cylinder body, the upper end of each first expansion joint is open, and the lower end of each second expansion joint is open; the upper part of the clamping jaw cylinder is provided with a conical surface part which is reduced upwards; the outer sleeve is of a cylinder structure and comprises a tapered hole and a connecting hole which are communicated, and the tapered hole is positioned at the upper part and is a tapered hole which is matched with the tapered surface part on the clamping jaw; the connecting hole is positioned at the lower part and is provided with an internal thread matched with the external thread on the mounting column. The chuck has the advantages of simple structure, large deformation range of the clamping jaw, easy assembly and disassembly operation and uniform and stable clamping.

Description

Quick chuck

Technical Field

The utility model relates to a machine tooling part technical field, in particular to quick chuck.

Background

The chuck is a cylindrical fixture which is arranged on a milling machine and used for fastening a drill bit or a milling cutter, and is also a fixing device for fixing parts needing to be processed. The chuck is widely applied to the machining industry, but the existing chuck has more parts, more complex structure and complicated loading and unloading operation; generally, clamping jaw clamping range of a chuck is narrow, workpieces to be clamped are inconvenient to take and place when the chuck is used, one chuck can only be suitable for clamping workpieces of one size, and practicability is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a quick chuck, this chuck simple structure, clamping jaw deformation range is big, and loading and unloading operation is easy, and the centre gripping is stable, and axial deviation is little, and difficult emergence is twistd reverse, but quick replacement.

For realizing the above technical effect, the utility model discloses a technical scheme as follows:

a quick chuck comprises a base, a clamping jaw arranged on the base and an outer sleeve sleeved outside the clamping jaw and adjustably connected with the base; the base comprises a mounting column for mounting the clamping jaw, and external threads are arranged on the periphery of the mounting column; the clamping jaw is of a cylindrical structure, a through clamping hole is formed in the middle of the clamping jaw, a plurality of first expansion joints and second expansion joints which are longitudinally distributed at intervals are arranged on a clamping jaw cylinder body, the upper end of each first expansion joint is open, and the lower end of each second expansion joint is open; the upper part of the clamping jaw cylinder is provided with a conical surface part which is reduced upwards; the outer sleeve is of a cylinder structure and comprises a tapered hole and a connecting hole which are communicated, and the tapered hole is positioned at the upper part and is a tapered hole which is matched with the tapered surface part on the clamping jaw; the connecting hole is located the lower part, is equipped with the internal thread, the internal thread with external screw thread looks adaptation on the erection column.

Furthermore, the bottom of the clamping jaw is provided with a limiting tooth, and the upper end of the mounting column is provided with a limiting groove matched with the limiting tooth.

Furthermore, the limiting teeth comprise a head part and a rod part, and the diameter of the head part is larger than that of the rod part; the limiting groove comprises a lower groove and an extending groove which is connected with the lower groove and extends towards the center.

Furthermore, the upper part of the extension groove is small and the lower part of the extension groove is large, the lower part of the extension groove is matched with the head part of the limiting tooth, and the upper part of the extension groove is matched with the rod part of the limiting tooth.

Furthermore, the side wall of the clamping hole is provided with a wear-resistant layer, and the wear-resistant layer is made of super-hard alloy or titanium carbide.

Further, the clamping holes are circular, quadrangular or hexagonal holes.

Further, first expansion joint and second expansion joint are 3 or first expansion joint and second expansion joint are 4 all.

Furthermore, the outer side of the outer sleeve is provided with an anti-skid part. Increase the friction force and facilitate the screwing of the outer sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a quick chuck is equipped with base, clamping jaw and overcoat, wherein, the clamping jaw is vertical to be separated and set up first expansion joint and second expansion joint, the first expansion joint is upwards opened, the second expansion joint is downwards opened, make the clamping jaw have the great flexible clamping range, and the upper portion and the lower part of clamping jaw can take place to stretch out and draw back, the clamping dynamics is more even stable; the upper end of the clamping jaw is provided with a conical surface part which is matched with the conical hole of the outer sleeve, and the connecting hole of the outer sleeve is in threaded connection with the mounting column on the base; in the process of screwing the downward thread of the outer sleeve, the conical hole of the outer sleeve extrudes the conical surface part of the clamping jaw inwards to clamp the workpiece by the clamping jaw; the chuck has simple structure, and is convenient and quick to mount and dismount; the clamping jaw is large in telescopic range, workpieces of various sizes can be clamped, the upper portion and the lower portion of the clamping jaw can be stretched, and clamping force is uniform and stable.

2. The bottom of the clamping jaw is provided with a limiting tooth, the upper end of the mounting column is provided with a matched limiting groove, the diameter of the head part of the limiting tooth is larger than that of the rod part, and the limiting groove comprises a lower groove and an extending groove extending towards the center; when the clamping jaw is contracted for clamping, the limiting teeth slide towards the extending groove; the clamping jaw has the effects of limiting and fixing the clamping jaw, the clamping jaw is effectively prevented from rotating, and the contraction of the lower part of the clamping jaw is not limited; and the extension slot prevents the jaw from moving axially.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view structure diagram of the middle clamping jaw of the utility model.

Fig. 3 is a schematic top view of the clamping jaw of the present invention.

Fig. 4 is a schematic bottom view of the middle jaw of the present invention.

Fig. 5 is a schematic structural view of the middle outer cover of the present invention.

Fig. 6 is a schematic cross-sectional view of the middle outer cover of the present invention.

Fig. 7 is a schematic structural view of the upper end of the middle mounting post of the present invention.

Fig. 8 is a schematic sectional view in the direction of a-a in fig. 7 according to the present invention.

Reference numerals:

1. a base; 11. mounting a column; 12. a limiting groove; 121. a lower groove; 122. an extension groove; 2. a clamping jaw; 21. a clamping hole; 22. a first expansion joint; 23. a second expansion joint; 24. a conical surface portion; 25. limiting teeth; 251. a head portion; 252. a rod portion; 26. a wear layer; 3. a jacket; 31. a tapered hole; 32. connecting holes; 33. and an anti-slip part.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the present invention provides a fast chuck, which comprises a base 1, a clamping jaw 2 installed on the base 1, and an outer sleeve 3 sleeved outside the clamping jaw 2 and adjustably connected to the base 1.

Wherein, base 1 is connected chassis and erection column 11 as an organic whole including connecting, and 11 tops of erection column are connected with

clamping jaw

2, and 11 peripheries of erection column are equipped with the external screw thread for be connected with overcoat 3.

As shown in fig. 1 to 4, the clamping jaw 2 is a cylindrical structure, the middle part of the clamping jaw is provided with a clamping hole 21 penetrating through the upper part and the lower part, and the clamping hole 21 is used for placing a workpiece to be clamped; the upper part of the clamping jaw 2 cylinder body is provided with a conical surface part 24 which is reduced upwards. A plurality of first expansion joints 22 and second expansion joints 23 which are longitudinally distributed at intervals are arranged on the cylinder body of the clamping jaw 2, wherein the first expansion joints 22 are open towards the upper end, and the second expansion joints 23 are open towards the lower end; and the first expansion joint 22 and the second expansion joint 23 both penetrate through the cylinder body of the clamping jaw 2 and are communicated with the clamping hole 21.

As shown in fig. 1, 5 and 6, the outer sleeve 3 is of a cylindrical structure, is sleeved on the clamping jaw 2 and the mounting column 11, and comprises a tapered hole 31 and a connecting hole 32 which are communicated and penetrated up and down. Wherein, the taper hole 31 is positioned at the upper part of the outer sleeve 3 and is matched with the taper part 24 at the upper part of the clamping jaw 2; the connecting hole 32 is positioned at the lower part, an internal thread is arranged in the connecting hole 32, the internal thread is matched with the external thread on the mounting column 11, and the connecting hole 32 of the outer sleeve 3 is in threaded connection with the mounting column 11.

Preferably, as shown in fig. 2, 4, 7 and 8, the bottom of the jaw 2 is provided with a stop tooth 25. Correspondingly, the upper end of the mounting column 11 is provided with a limiting groove 12 matched with the limiting teeth 25, and the limiting teeth 25 extend into the limiting groove 12 for limiting and fixing. Wherein, the spacing tooth 25 and the spacing groove 12 comprise at least two.

The limit tooth 25 comprises a head part 251 and a rod part 252, wherein one end of the rod part 252 is connected with the clamping jaw 2, the other end of the rod part 252 is connected with the head part 251, and the diameter of the head part 251 is larger than that of the rod part 252. The stopper groove 12 includes a lower groove 121 and an extension groove 122, and the extension groove 122 is connected to the lower groove 121 and extends in a radial direction toward the center. The limiting teeth 25 are put in from the lower slots 121, and when the clamping jaw 2 is contracted, the limiting teeth 25 can slide along the extending slots 122.

The extension groove 122 is small at the top and large at the bottom, the upper part of the extension groove is matched with the rod part 252 of the limit tooth 25, and the lower part of the extension groove is matched with the head part 251 of the limit tooth 25. The limiting tooth 25 slides along the extension groove 122 in the extension groove 122, but cannot be pulled out of the extension groove 122 upwards, so that the axial movement of the clamping jaw 2 is limited.

Preferably, as shown in fig. 3 and 4, in order to prolong the service life of the clamping jaw 2, a wear-resistant layer 26 is arranged on the side wall of the clamping hole 21 of the clamping jaw 2, and the wear-resistant layer 26 is preferably made of a super-hard alloy material or a titanium carbide material.

The clamping holes 21 of the clamping jaws 2 can be circular holes, quadrilateral holes or hexagonal holes and the like according to the shape of a workpiece to be clamped.

The number of the first expansion joints 22 is equal to that of the second expansion joints 23. In one embodiment, the first expansion joint 22 and the second expansion joint 23 are 3, and the corresponding clamping hole 21 of the clamping jaw 2 may be a circular hole or a hexagonal hole. In another embodiment, the first expansion joint 22 and the second expansion joint 23 are 4, and the corresponding clamping hole 21 of the clamping jaw 2 may be a circular hole or a quadrilateral edge-shaped hole. Obviously, the number of the first expansion joints 22 and the second expansion joints 23 may also be 6 or 8, etc.

Preferably, the outer side of the outer sleeve 3 is provided with the anti-slip part 33, so that the friction force can be effectively increased, and the outer sleeve 3 can be screwed more conveniently and more conveniently in a labor-saving manner.

In the foregoing, only certain exemplary embodiments have been described briefly. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings, or are orientations and positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Claims

1. A quick chuck is characterized by comprising a base (1), a clamping jaw (2) arranged on the base (1) and an outer sleeve (3) which is sleeved outside the clamping jaw (2) and is in adjustable connection with the base (1); the base (1) comprises a mounting column (11) for mounting the clamping jaw (2), and external threads are arranged on the periphery of the mounting column (11); the clamping jaw (2) is of a cylindrical structure, a penetrating clamping hole (21) is formed in the middle of the clamping jaw, a plurality of first expansion joints (22) and second expansion joints (23) which are longitudinally distributed at intervals are arranged on a barrel body of the clamping jaw (2), the first expansion joints (22) are open towards the upper end, and the second expansion joints (23) are open towards the lower end; the upper part of the cylinder body of the clamping jaw (2) is provided with a conical surface part (24) which is reduced upwards; the outer sleeve (3) is of a cylinder structure and comprises a tapered hole (31) and a connecting hole (32) which are communicated, the tapered hole (31) is positioned at the upper part and is matched with the tapered surface part (24) on the clamping jaw (2); the connecting hole (32) is positioned at the lower part and is provided with an internal thread, and the internal thread is matched with the external thread on the mounting column (11).

2. The quick chuck according to claim 1, wherein the bottom of the clamping jaw (2) is provided with a limiting tooth (25), and the upper end of the mounting column (11) is provided with a limiting groove (12) matched with the limiting tooth (25).

3. The quick clamp according to claim 2, characterized in that said limit tooth (25) comprises a head (251) and a shank (252), said head (251) having a larger diameter than the shank (252); the limiting groove (12) comprises a lower groove (121) and an extending groove (122) which is connected with the lower groove (121) and extends towards the center.

4. A quick clamp according to claim 3, characterized in that said slot (122) is smaller at the top and larger at the bottom, the lower part being adapted to the head (251) of the limit tooth (25) and the upper part being adapted to the shank (252) of the limit tooth (25).

5. The quick clamp according to any one of claims 1 to 4, characterized in that the side walls of the clamping bore (21) are provided with a wear resistant layer (26), the wear resistant layer (26) being made of a super hard alloy or titanium carbide.

6. A quick-action chuck according to claim 5, characterized in that the clamping hole (21) is a circular, quadrangular or hexagonal hole.

7. The quick chuck according to claim 5, wherein the first expansion joint (22) and the second expansion joint (23) are both 3 or the first expansion joint (22) and the second expansion joint (23) are both 4.

8. A quick-action chuck according to claim 1, characterized in that the outer sleeve (3) is provided on its outside with a non-slip portion (33).