CN219075332U

CN219075332U - Straight type circular tube internal grinding combined clamp

Info

Publication number: CN219075332U
Application number: CN202222542025.7U
Authority: CN
Inventors: 朱福林; 肖亮; 谢山穗; 刘跃武; 谢绍东
Original assignee: Hengyang Kaixin Special Materials Technology Co ltd
Current assignee: Hengyang Kaixin Special Materials Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-26
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to the technical field of internal grinding machines, in particular to a straight-type circular tube internal grinding combined clamp which comprises a chuck, wherein three jaw supports are connected onto the chuck in a threaded manner, a front end screw hole I and a rear end screw hole I are formed in the three jaw supports, jaws are mounted on the tops of the three jaw supports in a clamping manner, a circular tube product is clamped between the three jaws, a front end screw hole II and a rear end screw hole II are formed in the three jaws, the front end screw hole II corresponds to the front end screw hole I, and a screw rod is mounted in a threaded fit manner in the three rear end screw holes II. The straight type circular tube internal grinding clamp solves the problem that the effective length of the clamping jaw of the existing clamp is short, achieves circular tube internal grinding by increasing the effective length of the clamping jaw, and is simple in clamping and high in operability. In the utility model, the clamping jaw is connected with the chuck through the clamping jaw collet, so that the clamping jaw is easy and convenient to replace and has no sequence error.

Description

Straight type circular tube internal grinding combined clamp

Technical Field

The utility model relates to the technical field of internal grinding machines, in particular to a straight round tube internal grinding combined clamp.

Background

The internal grinder is mainly used for grinding the surface of an inner hole generated by cylindrical, conical or other shaped plain wires and the end surface of the inner hole, the clamp is an important component part of the internal grinder and is used for clamping and positioning a part during grinding the inner circle of the part, the three-jaw chuck is a mechanical device used for clamping a workpiece on a machine tool, and the three-jaw chuck consists of a large bevel gear, three small bevel gears and three jaws. The three small bevel gears are meshed with the large bevel gear, the back surface of the large bevel gear is provided with a plane thread structure, and the three clamping claws are equally and equally arranged on the plane thread. When the small bevel gear is pulled by a spanner, the large bevel gear rotates, and the plane threads on the back surface of the large bevel gear enable three clamping jaws to approach or withdraw from the center at the same time, and the workpiece is clamped and positioned by radial movement of the movable clamping jaws uniformly distributed on the chuck.

The existing clamp is short in effective length, is usually used for machining the inner circle of a short round pipe, such as a pinion, and is difficult to machine for the inner circle of a longer round pipe part due to difficult clamping and positioning, the round pipe part is easy to shake during machining, machining is difficult, and potential safety hazards exist.

Disclosure of Invention

The utility model aims to provide a straight round tube internal grinding combined clamp for solving the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a mill sectional fixture in straight-type pipe, includes the chuck, threaded connection has three jack catch collet on the chuck, three front end screw and rear end screw are all offered on the jack catch collet, three jack catch is all block-installed at jack catch collet top, three centre gripping has the pipe product between the jack catch front end screw second and rear end screw second have all been offered on the jack catch, just front end screw second with front end screw first corresponds, and three the equal spiro union of rear end screw installs the lead screw, and three the lead screw bottom all runs through rear end screw second and passes through rear end screw threaded connection jack catch collet, three all cup jointed on the lead screw packing ring first, three all cooperate to install nut first screw lower extreme screw thread portion, three screw upper end screw thread portion has cup jointed the packing ring second, three screw upper end screw thread portion cooperation installs nut second screw.

Preferably, the surfaces of the three clamping jaws, which are attached to the round tube product, are all arc-shaped surfaces.

Specifically, step parts are arranged below the side walls of the three clamping jaws.

Preferably, the first washer and the first nut are both positioned above the clamping jaw, and the top and the bottom of the first washer are respectively attached to the first nut and the clamping jaw.

Preferably, the side walls of the three cushion blocks are tightly attached to the round tube product.

Specifically, the upper parts of the side walls of the three cushion blocks are respectively provided with a step part.

Preferably, the second gasket and the second nut are both positioned above the cushion block, and the top and the bottom of the second gasket are respectively attached to the second nut and the cushion block.

Preferably, the first front end screw hole corresponds to the second front end screw hole, and the second front end screw hole is a step hole.

Preferably, the screws are installed in the front end screw holes II in a matched mode, and the bottoms of the three screws penetrate through the front end screw holes II and are connected with the claw bottom support through the front end screw holes I in a threaded mode.

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

the straight type circular tube internal grinding clamp solves the problem that the effective length of the clamping jaw of the existing clamp is short, achieves circular tube internal grinding by increasing the effective length of the clamping jaw, and is simple in clamping and high in operability.

In the utility model, the clamping jaw is connected with the chuck through the clamping jaw collet, and the clamping jaw collet is not required to be disassembled when the clamping jaw is replaced, so that the chuck is not required to be rotated and the installation sequence is distinguished, the replacement is simple and convenient, and the sequence error does not occur.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a product structure for clamping round tubes according to the utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is a second schematic cross-sectional view of the present utility model;

fig. 5 is a schematic diagram of an explosive structure according to the present utility model.

In the figure: 1. a chuck; 2. a claw bottom support; 201. a first screw hole at the front end; 202. the first rear end screw hole is formed; 3. a claw; 301. a second front screw hole; 302. a second rear screw hole; 4. a round tube product; 5. a screw rod; 6. a first gasket; 7. a first nut; 8. a cushion block; 9. a second gasket; 10. a second nut; 11. and (5) a screw.

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 are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1 to 5, the present utility model provides a technical solution: the utility model provides a mill sectional fixture in straight pipe, including chuck 1, threaded connection has three jack catch collet 2 on the chuck 1, front end screw one 201 and rear end screw one 202 have all been seted up on the three jack catch collet 2, jack catch 3 is all block-installed at three jack catch collet 2 top, it holds pipe product 4 to press from both sides between the three jack catch 3, front end screw two 301 and rear end screw two 302 have all been seted up on the three jack catch 3, and front end screw two 301 and front end screw one 201 correspond, lead screw 5 is installed to the equal spiro union of three rear end screw two 302, three lead screw 5 bottom all runs through rear end screw two 302 and passes through rear end screw one 202 threaded connection jack catch collet 2, washer one 6 has all been cup jointed on the three lead screw 5, nut one 7 has all been installed to the equal cooperation of three lead screw 5 lower extreme screw thread part, nut 8 has all been cup jointed to three lead screw 5 upper end screw thread part, nut two 9 has all been cup jointed to three lead screw 5 upper end screw part, nut two 10 has been installed in the cooperation of three lead screw 5 upper end screw thread part.

In this embodiment, the surfaces of the three claws 3 attached to the round tube product 4 are all arc-shaped surfaces.

Specifically, step parts are arranged below the side walls of the three clamping claws 3.

In this embodiment, the first washer 6 and the first nut 7 are both located above the claw 3, and the top and bottom of the first washer 6 are respectively attached to the first nut 7 and the claw 3.

In this embodiment, the side walls of the three cushion blocks 8 are tightly attached to the round tube product 4.

Specifically, the side walls of the three pads 8 are each provided with a stepped portion above.

In this embodiment, the second washer 9 and the second nut 10 are both located above the cushion block 8, and the top and bottom of the second washer 9 are respectively attached to the second nut 10 and the cushion block 8.

In this embodiment, the first front screw hole 201 corresponds to the second front screw hole 301, and the second front screw hole 301 is a stepped hole.

In this embodiment, the screws 11 are installed in the second front screw holes 301 in a matching manner, and the bottoms of the three screws 11 penetrate through the second front screw holes 301 and are in threaded connection with the jaw base 2 through the first front screw holes 201.

The application method and the advantages of the utility model are as follows: when the straight type circular tube internal grinding combined clamp is used, the working process is as follows:

as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the jaw collet 2 and the jaw 3 are provided with four corresponding screw holes, the front end screw hole one 201 and the front end screw hole two 301 are used for fixing the jaw collet 2 and the jaw 3 by using the screw 11, the jaw 3 is provided with an arc matched with the round tube product 4, the round tube product 4 can be well fixed, meanwhile, the round tube product 4 is limited by using the screw 5 and the cushion block 8, the effect of prolonging the effective grabbing length of the jaw 3 is achieved, the rear end screw hole one 202 and the rear end screw hole two 302 are used for fixing the screw 5, meanwhile, the screw 5 also plays the role of fixing the jaw collet 2 and the jaw 3, the washer one 6 and the nut one 7 play the role of reinforcing the screw 5, the washer two 9 and the nut two 10 play the role of reinforcing the cushion block 8, when the round tube product 4 is clamped, the height of the cushion block 8 on the screw 5 can be adjusted according to the product length, the bottom of the round tube product 4 is enabled to be abutted on the step part of the inner side of the jaw 3, the top of the product 4 can be abutted on the step part of the inner side of the cushion block 8, thus the inner side of the round tube 4 can be clamped, the top end of the round tube 4 can be clamped by the inner side of the cushion block 4, and the top end of the round tube 4 can be clamped by the product 4, and the top can be clamped by the product 4.

When the clamping jaw 3 needs to be replaced, the three screw rods 5 are detached, the three screws 11 are detached again, the three old clamping jaws 3 are detached, and the new clamping jaw 3 is replaced, so that the clamping jaw 3 does not need to be detached, and the clamping jaw 3 is not directly connected with the chuck 1, so that the installation sequence of the three clamping jaw 2 is distinguished when the clamping jaw is initially installed, and the installation sequence of the three clamping jaw 3 does not need to be considered when the clamping jaw 3 is replaced.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a mill sectional fixture in straight pipe, includes chuck (1), its characterized in that: the chuck is characterized in that three clamping jaw supports (2) are connected to the chuck (1) in a threaded mode, a front end screw hole I (201) and a rear end screw hole I (202) are formed in the clamping jaw supports (2), clamping jaws (3) are mounted on the tops of the clamping jaw supports (2) in a clamping mode, round tube products (4) are clamped between the clamping jaws (3), a front end screw hole II (301) and a rear end screw hole II (302) are formed in the clamping jaws (3), the front end screw hole II (301) corresponds to the front end screw hole I (201), a screw rod (5) is mounted in a threaded mode in the rear end screw hole II (302) in a threaded mode, the bottoms of the screw rod (5) penetrate through the rear end screw hole II (302) and are connected with the clamping jaw supports (2) in a threaded mode, a first nut (6) is sleeved on the screw rod (5) in a threaded mode, a nut (7) is mounted in a threaded mode in the lower end thread portion of the screw rod (5), a threaded washer (10) is mounted on the upper end portion of the screw rod (5), and the screw rod (5) is connected with the threaded washer (10) in a threaded mode.

2. The straight round tube internal grinding combined clamp according to claim 1, wherein: the surfaces of the three clamping claws (3) which are attached to the round pipe product (4) are arc-shaped surfaces.

3. The straight round tube internal grinding combined clamp according to claim 1, wherein: the first gasket (6) and the first nut (7) are both positioned above the clamping jaw (3), and the top and the bottom of the first gasket (6) are respectively attached to the first nut (7) and the clamping jaw (3).

4. The straight round tube internal grinding combined clamp according to claim 1, wherein: the side walls of the three cushion blocks (8) are tightly attached to the round tube product (4).

5. The straight round tube internal grinding combined clamp according to claim 1, wherein: the second gasket (9) and the second nut (10) are both positioned above the cushion block (8), and the top and the bottom of the second gasket (9) are respectively attached to the second nut (10) and the cushion block (8).

6. The straight round tube internal grinding combined clamp according to claim 1, wherein: the front end screw hole I (201) corresponds to the front end screw hole II (301), and the front end screw hole II (301) is a step hole.

7. The straight round tube internal grinding combined clamp according to claim 1, wherein: the three front end screw holes II (301) are internally provided with screws (11) in a matched mode, and the bottoms of the three screws (11) penetrate through the front end screw holes II (301) and are in threaded connection with the claw bottom support (2) through the front end screw holes I (201).