CN220128183U

CN220128183U - Short shaft clamping device

Info

Publication number: CN220128183U
Application number: CN202321098283.9U
Authority: CN
Inventors: 马国栋
Original assignee: Deyang Zhongheng Heavy Industry Machinery Co ltd
Current assignee: Deyang Zhongheng Heavy Industry Machinery Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-12-05
Anticipated expiration: 2033-05-09

Abstract

The utility model discloses a short shaft clamping device which comprises a pressing part, a clamping part and a lengthening part, wherein the clamping part is rotationally connected to two sides of the pressing part; the pressing part comprises a fixed head, a movable plate, a movable column and a connecting column; the movable column and the connecting column are fixedly connected with the movable plate, one side of the fixed head is provided with a plurality of movable holes, and the middle part of the fixed head is provided with a through hole; one side of the movable column is movably arranged in the movable hole, and one side of the connecting column penetrates through the through hole; the clamping part comprises a movable frame, clamping jaws and an adjusting part; the movable frame is hinged with the fixed head, the clamping jaw is fixedly connected to one side of the movable frame, which is close to the movable plate, the adjusting plate is fixedly connected to one side of the movable frame, which is far away from the movable plate, and the adjusting plate is obliquely arranged inwards; one end of the movable column, which is far away from the movable plate, is fixedly connected with a mounting rod, two ends of the mounting rod are rotationally connected with idler wheels, and the idler wheels are contacted with the adjusting plate. By this design, the stub shaft part can be held stably while a large operable space around the held stub shaft part can be ensured.

Description

Short shaft clamping device

Technical Field

The utility model belongs to the technical field of clamps, and particularly relates to a short shaft clamping device.

Background

In the prior art, a clamping workpiece is required to be used for machining the shaft part, and the position of the shaft part is fixed through the clamping workpiece, so that the shaft part is convenient to machine. The existing clamping workpiece usually adopts a chuck, and the shaft of the shaft part is clamped and fixed through the clamping jaws on the chuck.

For machining of parts of short shaft, the prior art adopts a method consistent with the machining of parts of similar long shaft, namely clamping by a chuck. However, the stub shaft part occupies a distance from the shaft after being clamped by the chuck, resulting in a smaller operable space on the stub shaft part, which is disadvantageous for machining the stub shaft part.

The patent with the application number of CN202023333241.8 discloses a clamp for a short shaft part of a numerical control machine tool, which adopts the technical scheme that the clamp comprises a fixing clamp, clamping jaws, a top ring and an air passage, wherein a cylindrical fixing cavity is arranged in the fixing clamp, and one end of the fixing cavity is provided with an opening; the clamping jaws are arranged in the fixed cavity and are arranged at equal angular intervals along the circumference of the fixed cavity, and can move in a translational manner along the radial direction of the fixed cavity so as to move close to and clamp the short shaft part or move away from and release the short shaft part; the top ring is coaxially arranged in the fixed cavity and is positioned at one side of the clamping jaw away from the opening, the outer annular wall of the top ring is fixedly connected with the inner wall of the fixed cavity, and the end part of the short shaft part can be abutted against and tightly attached to one side of the top ring; the air passage is arranged on one side of the fixing clamp, which is away from the opening, and the fixing cavity is communicated with the outside. "it realizes the fixed minor axis part through the mode of pressing down the tip, but the processing environment of minor axis is still narrower.

Disclosure of Invention

The utility model aims to provide a short shaft clamping device, which aims to solve the following technical problems in the background art:

the short shaft part occupies a distance of the shaft after being clamped by the chuck, so that the operable space on the short shaft part is reduced, and the processing of the short shaft part is not facilitated.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the short shaft clamping device comprises a pressing part, a clamping part and a lengthening part, wherein the clamping part is rotationally connected to two sides of the pressing part and used for clamping the lengthening part, and the pressing part is movably arranged on a bottom plate and connected with a hydraulic cylinder;

the pressing part comprises a fixed head, a movable plate, a movable column and a connecting column; the movable column and the connecting column are fixedly connected with the movable plate, one side of the fixed head is provided with a plurality of movable holes, and the middle part of the fixed head is provided with a through hole; one side of the movable column is movably arranged in the movable hole, and one side of the connecting column penetrates through the through hole;

the clamping part comprises a movable frame, clamping jaws and an adjusting part; the movable frame is hinged with the fixed head, the clamping jaw is fixedly connected to one side of the movable frame, which is close to the movable plate, the adjusting plate is fixedly connected to one side of the movable frame, which is far away from the movable plate, and the adjusting plate is obliquely arranged inwards; one end of the movable column, which is far away from the movable plate, is fixedly connected with a mounting rod, two ends of the mounting rod are rotationally connected with idler wheels, and the idler wheels are contacted with the adjusting plate.

Further, a compression spring is arranged in the movable hole, one end of the compression spring is connected with the movable column, and the other end of the compression spring is connected with the bottom of the movable hole.

Further, a hinging seat and a hinging head which are mutually hinged are arranged between the movable frame and the fixed head; wherein, articulated seat and fixed head rigid coupling, articulated head and movable frame rigid coupling, the movable frame is articulated with the fixed head through articulated head and articulated seat.

Further, one side of the hinge joint is provided with a rectangular mounting groove, a screw rod is rotationally connected in the mounting groove, and threads on two sides of the screw rod are opposite in rotation direction; the two ends of the mounting groove are connected with the matching blocks in a sliding manner, the two ends of the screw rod are connected with screw rod nuts in a matching manner, and the screw rod nuts at the two ends of the screw rod are fixedly connected with the matching blocks respectively; two movable frames are arranged on two sides of the fixed head, and the two movable frames on the same side are fixedly connected with the matching blocks respectively.

Further, the movable frame is of an L-shaped structure, and reinforcing ribs are fixedly connected to the movable frame.

Further, a gasket made of rubber material is arranged on the clamping jaw.

Further, criss-cross anti-skid patterns are arranged on the movable plate.

Further, a limiting groove is formed in one side, close to the roller, of the adjusting plate, and the roller is in contact with the bottom of the limiting groove.

Further, two ends of the lengthening part are provided with crisscross anti-skidding patterns.

Further, the inside of the extension part is of a hollow structure.

Compared with the prior art, the utility model has the following beneficial effects:

the design of extension portion and the portion of supporting to press against for the minor axis part has bigger operable space after being pressed from both sides tightly, can make things convenient for the staff to carry out processing to the minor axis part.

The design of the clamping part and the pressing part can ensure that the lengthening part cannot move under the clamping condition, so that the stability of clamping the short shaft part is ensured, and the safety is improved. By this design a quick change or removal of the extension can also be achieved.

Drawings

FIG. 1 is a schematic view of the present utility model in use;

FIG. 2 is a schematic diagram of one embodiment of the present utility model;

FIG. 3 is a schematic diagram of a mechanism of the present utility model.

The marks in the figure: the device comprises a 1-short shaft part, a 2-lengthened part, a 3-clamping part, a 301-clamping jaw, a 302-reinforcing rib, a 303-movable frame, a 304-adjusting plate, a 305-limiting groove, a 4-pressing part, a 401-roller, a 402-mounting rod, a 403-connecting column, a 404-through hole, a 405-fixed head, a 406-movable column, a 407-movable plate, a 5-hydraulic cylinder, a 6-bottom plate, a 7-articulated head, an 8-articulated seat, a 9-screw rod, a 10-matched block, a 11-mounting groove, a 12-rotating shaft and a 13-rotating sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

The short shaft clamping device comprises a pressing part 4, a clamping part 3 and an lengthening part 2, wherein the clamping part 3 is rotatably connected to two sides of the pressing part 4 and used for clamping the lengthening part 2, and the pressing part 4 is movably arranged on a bottom plate 6 and connected with a hydraulic cylinder 5;

the pressing part 4 comprises a fixed head 405, a movable plate 407, a movable column 406 and a connecting column 403; the movable column 406 and the connecting column 403 are fixedly connected with the movable plate 407, one side of the fixed head 405 is provided with a plurality of movable holes, and the middle part of the fixed head 405 is provided with a through hole 404; one side of the movable column 406 is movably arranged in the movable hole, and one side of the connecting column 403 penetrates through the through hole 404;

the clamping part 3 comprises a movable frame 303, clamping jaws 301 and an adjusting part; the two sides of the fixed head 405 are fixedly connected with a rotating shaft 12, one side of the movable frame 303 is fixedly connected with a rotating sleeve 13, the rotating sleeve 13 is rotationally connected with the rotating shaft 12, the movable frame 303 and the fixed head 405 are hinged with the rotating shaft 12 through the rotating sleeve 13, the clamping jaw 301 is fixedly connected to one side of the movable frame 303, which is close to the movable plate 407, the adjusting plate 304 is fixedly connected to one side of the movable frame 303, which is far away from the movable plate 407, and the adjusting plate 304 is obliquely arranged inwards; one end of the movable column 406 far away from the movable plate 407 is fixedly connected with a mounting rod 402, two ends of the mounting rod 402 are rotatably connected with a roller 401, and the roller 401 is contacted with the adjusting plate 304.

Specifically, in actual use, as shown in fig. 1, one side of the extension 2 is placed between the jaws 301 and in contact with the movable plate 407, and the other side of the extension 2 is in contact with one end of the stub shaft part 1. The hydraulic cylinder 5 is started, the piston rod of the hydraulic cylinder 5 stretches out and pushes the clamping device on one side to move, and in the process, the clamping devices on two sides of the short shaft part 1 push the lengthening part 2 to press the short shaft part 1, so that the position of the short shaft part 1 is fixed. Due to the design of the lengthening part 2, the short shaft part 1 has larger operable space after being clamped, and the short shaft part 1 can be conveniently processed by workers.

Meanwhile, in the process that the clamping device pushes the extension part 2, the movable plate 407 drives the movable column 406 to extend into the movable hole, and the movable plate 407 also drives the connecting column 403 to move. When the connecting post 403 moves, the connecting post 403 drives the rollers 401 at both ends of the mounting bar 402 to push the adjusting plate 304, and the inclined adjusting plate 304 is opened outwards after being pushed. Because the movable frame 303 is hinged to the fixed head 405, when the adjusting plate 304 is opened outward, the end of the movable frame 303 with the clamping jaw 301 will clamp inward, so that the clamping jaw 301 on the movable frame 303 clamps the extension 2. By means of the design, the lengthened part 2 can be prevented from moving under the condition of clamping, so that stability of clamping the short shaft part 1 is guaranteed, and safety is improved. By this design a quick change or removal of the extension 2 can be achieved.

In a preferred embodiment, a compression spring is disposed within the movable aperture, with one end of the compression spring being connected to the movable post 406 and the other end being connected to the bottom of the movable aperture. The compression spring is designed to enable the movable plate 407 to return automatically when the piston rod of the hydraulic cylinder 5 is contracted. On the one hand, a certain clamping force can be maintained during initial loosening, so that safety is ensured. On the other hand, the connecting post 403 can be moved so that the roller 401 on the mounting bar 402 is released from the adjustment plate 304, and the clamping jaw 301 is released.

In a preferred embodiment, a hinge seat 8 and a hinge head 7 are hinged with each other between the movable frame 303 and the fixed head 405; wherein, the hinging seat 8 is fixedly connected with the fixed head 405, the hinging head 7 is fixedly connected with the movable frame 303, and the movable frame 303 is hinged with the fixed head 405 through the hinging head 7 and the hinging seat 8; further optimally, one side of the hinge joint 7 is provided with a rectangular mounting groove 11, the mounting groove 11 is rotationally connected with a screw rod 9, and threads on two sides of the screw rod 9 are reversely rotated; two ends of the mounting groove 11 are connected with a matching block 10 in a sliding manner, two ends of the screw rod 9 are connected with screw rod nuts in a matching manner, and the screw rod nuts at two ends of the screw rod 9 are fixedly connected with the matching block 10 respectively; two movable frames 303 are arranged on two sides of the fixed head 405, and the two movable frames 303 on the same side are fixedly connected with the matching block 10 respectively. By this design, when the screw rod 9 is rotated, the two movable frames 303 on the same side are close to each other or far away from each other, and the movable frames 303 can clamp different lengthening parts 2 by adjusting the positions of the movable frames 303, so that the applicability of the utility model is improved. The design of the hinge base 8 and the hinge joint 7 can increase the rotational flexibility of the movable frame 303.

In a preferred embodiment, the movable frame 303 has an L-shaped structure, and the movable frame 303 is fixedly connected with a reinforcing rib 302. The movable frame 303 with the L-shaped structure can ensure that the clamping jaw 301 faces the lengthening part 2, and the strength of the movable frame 303 can be effectively increased due to the design of the reinforcing ribs 302, so that the movable frame 303 can transmit and bear larger force.

In a preferred embodiment, jaws 301 are provided with shims of rubber material. The stability of clamping jaw 301 tight extension 2 can be guaranteed through setting up the gasket, simultaneously, the gasket can prevent that clamping jaw 301 from pressing out extension 2 recess, is unfavorable for subsequent use.

In a preferred embodiment, the movable plate 407 is provided with crisscrossed anti-skid patterns. The anti-slip pattern is used for increasing the friction coefficient between the lengthening part 2 and the movable plate 407, and the design of the anti-slip pattern ensures that the lengthening part 2 in the clamping device cannot rotate when the clamping device clamps the short shaft part 1.

In a preferred embodiment, the side of the adjusting plate 304 near the roller 401 is provided with a limit groove 305, and the roller 401 is in contact with the bottom of the limit groove 305. The design of the limit groove 305 limits the movement of the roller 401 in the limit groove 305, so that the roller 401 can stably push against the adjusting plate 304.

In a preferred embodiment, both ends of the extension 2 are provided with criss-cross anti-skid patterns. The anti-slip patterns on the two sides of the lengthened portion 2 are used for increasing the friction coefficient on the two sides of the lengthened portion 2, so that the relative rotation between the lengthened portion 2 and the short shaft part 1 is effectively prevented when the clamping device is used, and meanwhile, the relative rotation between the lengthened portion 2 and the movable plate 407 is also prevented. Thereby effectively ensuring the stability of clamping.

In a preferred embodiment, the interior of the extension 2 is hollow. The lengthening part 2 with the hollow structure can lighten the weight of the lengthening part 2, and is convenient for workers to replace different lengthening parts 2 according to different short shaft parts 1.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A minor axis clamping device, characterized in that: the clamping device comprises a pressing part (4), a clamping part (3) and a lengthening part (2), wherein the clamping part (3) is rotationally connected to two sides of the pressing part (4) and used for clamping the lengthening part (2), and the pressing part (4) is movably arranged on a bottom plate (6) and connected with a hydraulic cylinder (5);

the pressing part (4) comprises a fixed head (405), a movable plate (407), a movable column (406) and a connecting column (403); the movable column (406) and the connecting column (403) are fixedly connected with the movable plate (407), one side of the fixed head (405) is provided with a plurality of movable holes, and the middle part of the fixed head (405) is provided with a through hole (404); one side of the movable column (406) is movably arranged in the movable hole, and one side of the connecting column (403) penetrates through the through hole (404);

the clamping part (3) comprises a movable frame (303), clamping jaws (301) and an adjusting part; the movable frame (303) is hinged with the fixed head (405), the clamping jaw (301) is fixedly connected to one side of the movable frame (303) close to the movable plate (407), the adjusting plate (304) is fixedly connected to one side of the movable frame (303) far away from the movable plate (407), and the adjusting plate (304) is obliquely arranged inwards; one end of the movable column (406) far away from the movable plate (407) is fixedly connected with a mounting rod (402), two ends of the mounting rod (402) are rotatably connected with rollers (401), and the rollers (401) are in contact with the adjusting plate (304).

2. A stub shaft clamping device as claimed in claim 1 wherein: a compression spring is arranged in the movable hole, one end of the compression spring is connected with the movable column (406), and the other end of the compression spring is connected with the bottom of the movable hole.

3. A stub shaft clamping device as claimed in claim 1 wherein: a hinging seat (8) and a hinging head (7) which are mutually hinged are arranged between the movable frame (303) and the fixed head (405); wherein, articulated seat (8) and fixed head (405) rigid coupling, articulated head (7) and movable frame (303) rigid coupling, movable frame (303) are articulated with fixed head (405) through articulated head (7) and articulated seat (8).

4. A stub shaft holding device as claimed in claim 3 wherein: one side of the hinge joint (7) is provided with a rectangular mounting groove (11), the mounting groove (11) is rotationally connected with a screw rod (9), and threads on two sides of the screw rod (9) are reversely rotated; two ends of the mounting groove (11) are connected with a matching block (10) in a sliding manner, two ends of the screw rod (9) are connected with screw rod nuts in a matching manner, and the screw rod nuts at two ends of the screw rod (9) are fixedly connected with the matching block (10) respectively; two movable frames (303) are arranged on two sides of the fixed head (405), and the two movable frames (303) on the same side are fixedly connected with the matching block (10) respectively.

5. A stub shaft clamping device as claimed in claim 1 wherein: the movable frame (303) is of an L-shaped structure, and the movable frame (303) is fixedly connected with a reinforcing rib (302).

6. A stub shaft clamping device as claimed in claim 1 wherein: the clamping jaw (301) is provided with a gasket made of rubber material.

7. A stub shaft clamping device as claimed in claim 1 wherein: the movable plate (407) is provided with crisscrossed anti-skid patterns.

8. A stub shaft clamping device as claimed in claim 1 wherein: one side of the adjusting plate (304) close to the roller (401) is provided with a limiting groove (305), and the roller (401) is contacted with the bottom of the limiting groove (305).

9. A stub shaft clamping device as claimed in claim 1 wherein: both ends of the lengthening part (2) are provided with crisscross anti-skid patterns.

10. A stub shaft clamping device as claimed in claim 1 wherein: the inside of the lengthening part (2) is of a hollow structure.