CN213497902U

CN213497902U - Thin-wall part clamping tool for numerical control machine tool

Info

Publication number: CN213497902U
Application number: CN202022421959.6U
Authority: CN
Inventors: 陈凯杰; 陈晓锋
Original assignee: Suzhou Kaisheng Instrument Technology Co ltd
Current assignee: Suzhou Kaisheng Instrument Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-22
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a thin wall part centre gripping frock for digit control machine tool, including the three-jaw chuck, the three-jaw chuck can centre gripping coupling assembling, just coupling assembling can the connecting part, just coupling assembling includes the cramping body and compresses tightly the lid, just compress tightly lid and cramping body and can dismantle the connection, the cramping body sets up the connecting hole with the part that compresses tightly the lid and be connected, just supply the part to place in the connecting hole, just compress tightly the part that the lid can compress tightly in the connecting hole, just the end of treating of part exposes and compresses tightly the lid. Compared with the prior art, the clamping fixture is mainly used for clamping thin-wall parts during machining, so that the shapes of the parts cannot be extruded and deformed during machining, and the machining precision and the geometric tolerance precision of the parts are ensured; after the tool is used, the dismounting part only needs to loosen or screw the pressing cover, and the tool can be operated by a single hand, and is simple and convenient.

Description

Thin-wall part clamping tool for numerical control machine tool

Technical Field

The utility model relates to a digit control machine tool equipment field especially relates to a compound thin wall part centre gripping frock that is used for digit control machine tool.

Background

A numerically controlled machine tool is an automated machine tool equipped with a program control system, which is capable of operating the machine tool and machining parts according to a programmed program. Generally, a workpiece is clamped by a jig and machined by a milling cutter of a machine tool.

The existing clamp mostly uses a three-jaw chuck as a clamping mechanism, and a clamping jaw is used for clamping a workpiece. In the actual use process, no matter positive claw or negative claw, the part is required to be stretched into enough length to ensure the stability of the part in the machining process, and the part is stretched into enough length to cause the milling cutter to process, which may possibly obstruct the feed and affect the machining of the part, and also may cause some thin-wall parts to be incapable of bearing the pressure of the clamping jaws due to too large force when workers use the chuck wrench to clamp the three-jaw chuck, so that the deformation occurs and the machining precision is affected, and the parts are damaged without accident, and the general force is too small, which may cause the thin-wall parts to be incapable of clamping, when the cutter applies axial force to process, the parts may fly out, and there is a potential safety hazard.

Therefore, the present invention aims to provide a thin-walled part clamping tool for a numerical control machine tool.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a thin-wall part clamping tool for a numerical control machine tool.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a thin wall part centre gripping frock for digit control machine tool, includes the three-jaw chuck, the three-jaw chuck can centre gripping coupling assembling, just coupling assembling can the connecting element, just coupling assembling includes the cramping body and compresses tightly the lid, just compress tightly the lid and can dismantle with the cramping body and be connected, the cramping body sets up the connecting hole with the tip that compresses tightly the lid and be connected, just supply the part to place in the connecting hole, just compress tightly the part that the lid can compress tightly in the connecting hole, just the end of treating of part exposes and compresses tightly the lid.

Preferably, the detachable connection of the pressing cover and the clamping body is threaded connection, an external thread is arranged on the periphery of the clamping body, and an internal thread is arranged in the pressing cover. Through the cooperation of internal thread and external screw thread promptly, realize compressing tightly the lid and being connected with dismantling of centre gripping body.

Preferably, the clamping body is further provided with a positioning block, and the positioning block is an annular boss. When the part on the clamping body supplies the three-jaw chuck centre gripping promptly, the locating piece of annular boss can push up in the outside of jack catch, has guaranteed the length that clamping and clamping body are connected promptly, has realized the stable centre gripping with the clamping body, even the effort is too big moreover, has only damaged the clamping body, to spare part and not damaged.

Preferably, a limiting groove is formed in the connecting hole, a limiting process block is arranged on the part, and the limiting process block can be matched with the limiting groove, so that the limiting process block is located between the limiting groove and the pressing cover. The pressing cover actually presses the limiting process block, and stable placement of parts in the connecting holes is guaranteed through the limiting process block.

Preferably, the pressing cover is provided with an exposure hole, and the exposure hole allows a part to be exposed out of the pressing cover. Namely, the end to be processed of the part is processed.

Preferably, the three-jaw chuck includes the chuck face, just set up three jack catch, and three on the chuck the jack catch interval 120 degrees sets up, just the jack catch can be followed under the effect of external force the outside of chuck moves to the center, and is three the centre energy centre gripping of clamping jaw treats the centre gripping work piece. Namely, the stable clamping of the clamping body is realized.

The utility model relates to a thin wall part clamping tool for a numerical control machine tool, which has the advantages that compared with the prior art, the clamping tool is mainly used for clamping the thin wall part during processing, so that the outline of the part is not extruded and deformed during the processing process, and the processing precision and the geometric tolerance precision of the part are ensured; after the tool is used, the dismounting part only needs to loosen or screw the pressing cover, and the tool can be operated by a single hand, and is simple and convenient.

Drawings

Fig. 1 is a schematic structural diagram of a thin-wall part clamping tool for a numerical control machine tool.

Fig. 2 is an exploded view of the connecting assembly and the component.

Fig. 3 is a schematic structural view of the clamping body.

In the figure:

1-three-jaw chuck, 2-connecting component, 3-part, 4-limiting process block,

11-chuck surface, 12-claw,

21-clamping body, 22-pressing cover, 211-connecting hole, 212-positioning block, 213-limiting groove and 221-exposing hole.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1-3, in the embodiment, the thin-wall part clamping tool for the numerical control machine tool includes a three-jaw chuck 1, the three-jaw chuck 1 can clamp a connecting assembly 2, the connecting assembly 2 can connect a part 3, the connecting assembly 2 includes a clamping body 21 and a pressing cover 22, the pressing cover 22 is detachably connected to the clamping body 21, a connecting hole 211 is formed in an end portion of the clamping body 21 connected to the pressing cover 22, the part 3 is placed in the connecting hole 211, the pressing cover 22 can press the part 3 in the connecting hole 211, and a to-be-processed end of the part 3 is exposed out of the pressing cover 22.

The detachable connection of the pressing cover 22 and the clamping body 21 is threaded, an external thread is arranged on the periphery of the clamping body 21, and an internal thread is arranged in the pressing cover 22. That is, the detachable connection of the pressing cover 22 and the clamping body 21 is realized by the matching of the internal thread and the external thread.

The clamping body 21 is further provided with a positioning block 212, and the positioning block 212 is an annular boss. That is, when the part on the clamping body 21 is clamped by the three-jaw chuck 1, the positioning block 212 of the annular boss can be pushed against the outer side of the clamping jaw 12, that is, the length of the clamping clip connected with the clamping body 21 is ensured, the clamping body 21 is stably clamped, and even if the force is too large, the clamping body 21 is only damaged, and no damage is caused to the part 3.

A limiting groove 213 is arranged in the connecting hole 211, a limiting process block 4 is arranged on the part 3, and the limiting process block 4 can be matched with the limiting groove 213, so that the limiting process block 4 is positioned between the limiting groove 213 and the pressing cover 22. Namely, the pressing cover 22 actually presses the limiting process block 4, and the stable placement of the part 3 in the connecting hole 211 is ensured through the limiting process block 4.

The pressing cover 22 is provided with an exposing hole 221, and the exposing hole 221 allows the part 3 to expose the pressing cover 22. Namely, the end to be processed of the part 3 is processed.

The three-jaw chuck 1 comprises a chuck surface 11, three clamping jaws 12 are arranged on the chuck, the three clamping jaws 12 are arranged at intervals of 120 degrees, the clamping jaws 12 can move towards the center along the outer side of the chuck under the action of external force, and the centers of the three clamping jaws can clamp workpieces to be clamped. I.e. a stable clamping of the clamping body 21 is achieved.

The thin-wall part 3 clamping tool for the numerical control machine tool has the beneficial effects that compared with the prior art, the thin-wall part 3 clamping tool is mainly used for clamping when the thin-wall part 3 is machined, so that the shape of the part 3 is not extruded and deformed in the machining process, and the machining precision and the geometric tolerance precision of the part 3 are ensured; after the tool is used, the dismounting part 3 can be operated by only loosening or screwing the pressing cover 22, and the tool is simple and convenient.

The basic using steps are that the clamping jaws 12 of the three-jaw chuck 1 are loosened, one end of the clamping body 21 extends into the clamping jaws 12, attention is paid to the end, which is not provided with an external thread, of the clamping jaws 12, the clamping jaws 12 are locked by a chuck wrench, the clamping body 21 can be slowly clamped by the clamping jaws 12, attention is paid to the fact that the positioning blocks 212 on the outer side of the clamping body 21 abut against the outer side of the clamping jaws 12 when clamping is about to be conducted, the length of a clamping part is guaranteed, and clamping stability is guaranteed. At this time, one end of the connection hole 211 of the clamping body 21 is exposed, the part 3 to be processed is placed into the connection hole 211, attention is paid to the correspondence between the limiting process block 4 and the limiting groove 213, then the part 3 is stably stored in the connection hole 211 by the threaded connection between the pressing cover 22 and the clamping body 21, and then the exposed part of the part 3 is processed by the cutter.

The clamping body 21 and the pressing cover 22 are generally made of brass, and the hardness of the clamping body is lower than that of the processed part 3, so that scratches are prevented from being left on the surface of the part 3.

When the clamping body 21 is processed, the clamping body is formed by one-step clamping, requirements on geometric tolerance such as coaxiality are met, the positioning block 212 of the clamping body 21 also needs to have enough size, and the positioning accuracy is guaranteed. The limiting process block 4 on the part 3 is used as a transition clamping position of the part 3, and also needs to have certain precision requirements, and the matching of the excircle of the limiting process block 4 and the step-shaped limiting groove 213 in the clamping body 21 needs to be proper, so that the part 3 cannot be loosened when the main shaft drives to rotate. Because the limiting process block 4 is a temporary clamping mechanism, the whole part 3 cannot be influenced even if the part is extruded and deformed or scratched due to overlarge clamping force during clamping.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a thin wall part centre gripping frock for digit control machine tool which characterized in that: including three-jaw chuck, three-jaw chuck can centre gripping coupling assembling, just coupling assembling can the connecting part, just coupling assembling includes the cramping body and compresses tightly the lid, just compress tightly the lid and can dismantle with the cramping body and be connected, with compress tightly the lid and connect the tip of the cramping body sets up the connecting hole, just supply the part to place in the connecting hole, just compress tightly the part that the lid can compress tightly in the connecting hole, just the end of treating of part exposes and compresses tightly the lid.

2. The thin-wall part clamping tool for the numerical control machine tool according to claim 1, characterized in that: the detachable connection of the pressing cover and the clamping body is threaded connection, external threads are arranged on the periphery of the clamping body, and internal threads are arranged in the pressing cover.

3. The thin-wall part clamping tool for the numerical control machine tool according to claim 1, characterized in that: the clamping body is further provided with a positioning block, and the positioning block is an annular boss.

4. The thin-wall part clamping tool for the numerical control machine tool according to claim 1, characterized in that: a limiting groove is formed in the connecting hole, a limiting process block is arranged on the part, and the limiting process block can be matched with the limiting groove, so that the limiting process block is located between the limiting groove and the pressing cover.

5. The thin-wall part clamping tool for the numerical control machine tool according to claim 1, characterized in that: the pressing cover is provided with an exposure hole, and the exposure hole is used for exposing parts out of the pressing cover.

6. The thin-wall part clamping tool for the numerical control machine tool according to claim 1, characterized in that: the three-jaw chuck comprises a chuck surface, three clamping jaws are arranged on the chuck, the clamping jaws are arranged at intervals of 120 degrees, the clamping jaws can move towards the center outside the chuck under the action of external force, and the clamping jaws can clamp a workpiece to be clamped.