阅读说明：本技术 一种机床用柔性软爪卡盘及使用方法 (Flexible soft jaw chuck for machine tool and use method ) 是由 孙军艳 丁旭江 胡永乐 刘承昊 焦从健 于 2021-03-31 设计创作，主要内容包括：本发明属于机械加工领域,公开了一种机床用柔性软爪卡盘及使用方法,包括若干可调支柱、若干卡盘爪、碟形齿轮、卡盘体下端盖以及若干锥齿轮；卡盘体下端盖侧面开设若干锥齿轮安装孔,若干锥齿轮的一端分别位于若干锥齿轮安装孔内,另一端均与碟形齿轮啮合,且锥齿轮能够在锥齿轮安装孔内转动；碟形齿轮上端面设置阿基米德螺旋槽,若干卡盘爪的一端上均设置卡盘爪凸起,卡盘爪凸起与阿基米德螺旋槽连接,若干卡盘爪的另一端分别与若干可调支柱可拆卸连接,可调支柱远离卡盘爪一端的侧面上设置若干不同直径的圆弧面。本发明结构简单,拆卸方便,重复利用率好,加工成本低,省去了焊接及后续工序,提高了软爪卡盘的使用效率,降低了零件的生产成本。(The invention belongs to the field of machining, and discloses a flexible soft jaw chuck for a machine tool and a using method thereof, wherein the flexible soft jaw chuck comprises a plurality of adjustable struts, a plurality of chuck jaws, a disc-shaped gear, a chuck body lower end cover and a plurality of bevel gears; a plurality of bevel gear mounting holes are formed in the side face of the lower end cover of the chuck body, one ends of the bevel gears are respectively positioned in the bevel gear mounting holes, the other ends of the bevel gears are meshed with the disc-shaped gear, and the bevel gears can rotate in the bevel gear mounting holes; the upper end face of the dish-shaped gear is provided with an Archimedes spiral groove, one end of each of the plurality of chuck jaws is provided with a chuck jaw bulge, the chuck jaw bulge is connected with the Archimedes spiral groove, the other ends of the plurality of chuck jaws are detachably connected with the plurality of adjustable supporting columns respectively, and the side face, away from one end of each chuck jaw, of each adjustable supporting column is provided with a plurality of arc surfaces with different diameters. The soft jaw chuck has the advantages of simple structure, convenience in disassembly, good repeated utilization rate and low processing cost, saves welding and subsequent processes, improves the use efficiency of the soft jaw chuck, and reduces the production cost of parts.)

1. A flexible soft jaw chuck for a machine tool is characterized by comprising a plurality of adjustable struts (2), a plurality of chuck jaws (4), a dish-shaped gear (5), a chuck body lower end cover (6) and a plurality of bevel gears (7);

a plurality of bevel gear mounting holes are formed in the side face of the lower end cover (6) of the chuck body, one ends of a plurality of bevel gears (7) are respectively positioned in the bevel gear mounting holes, the other ends of the plurality of bevel gears (7) are meshed with the disc-shaped gear (5), and the bevel gears (7) can rotate in the bevel gear mounting holes; an Archimedes spiral groove is formed in the upper end face of the disc-shaped gear (5), chuck jaw bulges are formed in the bottom ends of the plurality of chuck jaws (4), the chuck jaw bulges are connected with the Archimedes spiral groove, a plurality of adjustable support column mounting holes are formed in the top ends of the plurality of chuck jaws (4), and the plurality of adjustable support columns (2) are detachably connected with the plurality of chuck jaws (4) in a one-to-one correspondence mode through the adjustable support column mounting holes; the side surface of the adjustable support post (2) is provided with a plurality of arc surfaces with different diameters.

2. The flexible soft jaw chuck for machine tools according to claim 1, further comprising a hexagonal wrench (8); a counter bore is formed in one end, far away from the disc-shaped gear (5), of the bevel gear (7); the hexagonal wrench (8) can be clamped with the counter bore and drives the bevel gear (7) to rotate through the counter bore.

3. The flexible soft jaw chuck for the machine tool according to claim 1, further comprising a connecting piece (1), wherein the adjustable support column (2) is provided with a connecting hole, and one end of the connecting piece (1) passes through the connecting hole to be detachably connected with the chuck jaw (4).

4. The flexible soft jaw chuck for machine tools according to claim 3, wherein the connecting piece (1) is a compression screw or a dowel pin.

5. The flexible soft jaw chuck for machine tools according to claim 1, characterized in that said several circular arc surfaces of different diameters are evenly distributed on the adjustable support (2).

6. The flexible soft jaw chuck for machine tools according to claim 1, characterized in that the number of the adjustable support column (2) and the chuck jaws (4) is 3, and the number of the bevel gears (7) is 1 or 3.

7. The flexible soft jaw chuck for machine tools according to claim 1, characterized in that the plurality of chuck jaws (4) are evenly distributed in the Archimedes' spiral groove and the plurality of bevel gears (7) are evenly distributed on the side surface of the lower end cover (6) of the chuck body.

8. The flexible soft jaw chuck for the machine tool according to claim 1, further comprising a chuck body upper end cover (3), wherein the chuck body upper end cover (3) covers the disc-shaped gear (5) and is connected with a chuck body lower end cover (6), and a plurality of chuck jaw grooves for accommodating a plurality of chuck jaws (4) are formed in the chuck body upper end cover (3).

9. The flexible soft jaw chuck for machine tool according to claim 8, characterized in that the chuck body upper end cover (3) is fixedly connected with the chuck body lower end cover (6) through bolts.

10. A use method of a flexible soft jaw chuck for a machine tool is characterized by comprising the following steps:

determining target adjustable support column mounting holes in a plurality of adjustable support column mounting holes of each chuck jaw (4) according to the size of a part to be processed, mounting a plurality of adjustable support columns (2) in the target adjustable support column mounting holes of the plurality of chuck jaws (4) in a one-to-one correspondence manner, adjusting the mounting angles of the adjustable support columns (2) according to the shape of the part to be processed, placing the part to be processed into a space surrounded by the adjustable support columns (2), and rotating a bevel gear (7) to the adjustable support columns (2) to clamp the part to be processed;

after the machining is finished, the bevel gear (7) is rotated reversely to the plurality of adjustable struts (2) to loosen the part to be machined.

Technical Field

The invention belongs to the field of machining, and relates to a flexible soft jaw chuck for a machine tool and a using method thereof.

Background

In finish turning, a chuck including a hard jaw chuck and a soft jaw chuck and a pull tube are frequently used as a jig. The soft jaw chuck and the pull tube are high in clamping and positioning accuracy and are used more. The tube drawing is one of the necessary accessories of the machine tool and does not need post-production; the soft jaw chuck is different, the soft jaw chuck can be self-made according to the structural shape of the part, and the inner hole of the soft jaw chuck can be large or small.

The existing common soft jaw chuck is in a welding type, a copper bar is welded on the hard jaw chuck, milling and turning are carried out, and finally a part is clamped for production. Such soft jaw chucks have the following disadvantages: firstly, the processing cost is high, and welding is needed; secondly, the positioning is limited, different holes need to be processed on different parts, the repeated use rate is poor, and after the copper bar is used for a period of time, the copper bar needs to be welded again, so that the waste is large.

Disclosure of Invention

The invention aims to overcome the defects that the soft jaw chuck in the prior art is high in processing cost, needs to be welded, is limited in positioning, needs to process different holes on different parts and is poor in repeated use rate, and provides the flexible soft jaw chuck for the machine tool and the using method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

on one hand, the invention provides a flexible soft jaw chuck for a machine tool, which comprises a plurality of adjustable struts, a plurality of chuck jaws, a disc-shaped gear, a chuck body lower end cover and a plurality of bevel gears; a plurality of bevel gear mounting holes are formed in the side face of the lower end cover of the chuck body, one ends of the bevel gears are respectively positioned in the bevel gear mounting holes, the other ends of the bevel gears are meshed with the disc-shaped gear, and the bevel gears can rotate in the bevel gear mounting holes; an Archimedes spiral groove is formed in the upper end face of the disc-shaped gear, chuck jaw bulges are arranged at the bottom ends of the plurality of chuck jaws and connected with the Archimedes spiral groove, a plurality of adjustable support column mounting holes are formed in the top ends of the plurality of chuck jaws, and the plurality of adjustable support columns are detachably connected with the plurality of chuck jaws in a one-to-one correspondence mode through the adjustable support column mounting holes; the side surface of the adjustable support is provided with a plurality of arc surfaces with different diameters.

The invention further improves the flexible soft jaw chuck for the machine tool, which comprises the following steps:

the device also comprises a hexagonal wrench; a counter bore is formed in one end, far away from the disc-shaped gear, of the bevel gear; the hexagonal wrench can be clamped with the counter bore and drives the bevel gear to rotate through the counter bore.

The adjustable support column is provided with a connecting hole, and one end of the connecting piece penetrates through the connecting hole to be detachably connected with the chuck jaw.

The connecting piece is a compression screw or a positioning pin.

The arc surfaces with different diameters are uniformly distributed on the adjustable support.

The number of the adjustable support columns and the number of the chuck jaws are 3, and the number of the bevel gears is 1 or 3.

The plurality of chuck claws are uniformly distributed in the Archimedes spiral groove, and the plurality of bevel gears are uniformly distributed on the side surface of the lower end cover of the chuck body.

The upper end cover of the chuck body is arranged above the dish-shaped gear and connected with the lower end cover of the chuck body, and a plurality of chuck jaw grooves used for containing a plurality of chuck jaws are formed in the upper end cover of the chuck body.

The upper end cover of the chuck body is fixedly connected with the lower end cover of the chuck body through bolts.

In another aspect of the invention, a method for using a flexible soft jaw chuck for a machine tool comprises the following steps:

determining target adjustable support column mounting holes in a plurality of adjustable support column mounting holes of each chuck jaw according to the size of a part to be machined, mounting a plurality of adjustable support columns in the target adjustable support column mounting holes of the plurality of chuck jaws in a one-to-one correspondence manner, adjusting the mounting angles of the adjustable support columns according to the shape of the part to be machined, placing the part to be machined in a space surrounded by the adjustable support columns, and rotating the bevel gear to the adjustable support columns to clamp the part to be machined;

after the machining is finished, the bevel gear is rotated reversely to the plurality of adjustable supporting columns to loosen the part to be machined.

Compared with the prior art, the invention has the following beneficial effects:

according to the flexible soft jaw chuck for the machine tool, the dish-shaped gear and the bevel gear are arranged, the Archimedes spiral groove is formed in the upper end face of the dish-shaped gear, the plurality of chuck jaws are installed inside the Archimedes spiral groove, the top end of each chuck jaw is provided with the plurality of adjustable support mounting holes, each adjustable support can be detachably connected with any one adjustable support mounting hole, and the side face of each adjustable support is provided with the plurality of arc surfaces with different diameters. Thereby, based on the dismantled connected mode of a plurality of adjustable support mounting holes and adjustable support, realize the multiposition of adjustable support and the installation of multi-angle, thereby realize regarding the arc surface of different diameters respectively as the contact surface on the adjustable support, and simultaneously, drive dish gear and Archimedes helicla flute through rotating bevel gear and rotate, realize that the chuck claw in the Archimedes helicla flute is close to simultaneously or keeps away from the center, drive adjustable support and be close to simultaneously or keep away from the center, and then realize the part of treating of the different diameters of clamping in wider range, can the part of the multiple different specifications of clamping through a soft claw chuck, and play and press from both sides the effect of tightly or unclamp the part of treating processing. The soft jaw chuck has the advantages of simple structure, convenient disassembly, good repeated utilization rate and low processing cost, saves welding and subsequent processes, greatly improves the use efficiency of the soft jaw chuck and reduces the production cost of parts.

Furthermore, a counter bore is formed in one end, far away from the disc-shaped gear, of the bevel gear, and rotation of the bevel gear is facilitated through the counter bore design.

Furthermore, the arc surfaces with different diameters are uniformly distributed on the side surfaces of the adjustable supporting columns, and the uniformly distributed arc surfaces are convenient for the cooperative adjustment of the adjustable supporting columns, so that the clamping precision is improved.

Further, still include the chuck body upper end cover, the upper end housing of chuck body is established in dish gear top, and is connected with the lower end cover of chuck body, sets up a plurality of chuck jaw recesses that are used for holding a plurality of chuck jaws on the chuck body upper end cover, through setting up the chuck body upper end cover, prevents effectively that processing debris from getting into inside the soft claw chuck, including internals, hoisting device's life.

Further, the upper end cover of the chuck body is fixedly connected with the lower end cover of the chuck body through bolts, the upper end cover of the chuck body is conveniently detached and installed in a mode of fixed connection through bolts, and internal parts can be timely overhauled and replaced.

Drawings

FIG. 1 is a schematic structural diagram of a flexible soft jaw chuck for a machine tool according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of the flexible soft jaw chuck for machine tool according to the present invention;

FIG. 3 is a schematic view of the chuck jaws of the present invention with adjustable support posts installed;

FIG. 4 is a schematic structural view of an adjustable support according to the present invention;

FIG. 5 is a schematic structural view of another adjustable support according to the present invention;

FIG. 6 is a schematic view of the upper end cover of the flexible soft jaw chuck for machine tool according to the present invention;

FIG. 7 is a schematic view of the soft jaw clamping operation of the present invention;

fig. 8 is a schematic view of the allen wrench of the present invention.

Wherein: 1-a connector; 2-an adjustable support; 3-chuck body upper end cover; 4-chuck jaws; 5-a disc gear; 6-chuck body lower end cover; 7-bevel gears; 8-hexagonal wrench.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 to 8, the invention provides a flexible soft jaw chuck for a machine tool, which can effectively overcome the defects that the existing soft jaw chuck is high in processing cost, needs to be welded, is limited in positioning, needs to process different holes for different parts, and is poor in repeated use rate, can clamp parts with different specifications, greatly improves the use efficiency of the soft jaw chuck, and reduces the production cost of the parts.

Specifically, the flexible soft jaw chuck for the machine tool comprises a plurality of adjustable struts 2, a plurality of chuck jaws 4, a disc gear 5, a chuck body lower end cover 6 and a plurality of bevel gears 7.

Wherein, a plurality of bevel gear mounting holes are seted up to chuck body lower end cover 6 side, and the one end of a plurality of bevel gears 7 is located a plurality of bevel gear mounting holes respectively, and the other end all meshes with dish-shaped gear 5, and bevel gear 7 can rotate in the bevel gear mounting hole to guarantee can drive dish-shaped gear 5 through rotating bevel gear 7 and rotate. Set up the Archimedes helicla flute on the dish-shaped gear 5 up end, all set up the chuck claw arch on the bottom of a plurality of chuck claws 4, the chuck claw arch is connected with the Archimedes helicla flute, and such design makes dish-shaped gear 5 when rotating, and the Archimedes helicla flute rotates simultaneously, drives a plurality of chuck claws 4 and is close to simultaneously or keeps away from the center of dish-shaped gear 5 to carry out the clamping of treating the processing part of different diameters. All set up a plurality of adjustable pillar mounting holes on the top of a plurality of chuck jaws 4, a plurality of adjustable pillar 2 is even through dismantling of adjustable pillar mounting hole and a plurality of chuck jaws 4 one-to-one to carry out adjustable pillar 2's multi-angle installation, set up the arc surface of a plurality of different diameters on adjustable pillar 2's the side. Preferably, when the clamping device is installed, the adjustable support columns 2 are positioned in adjustable support column mounting holes formed in the same positions of the chuck jaws 4 so as to form a circular clamping space.

Preferably, a hexagonal wrench 8 is also included; a counter bore is formed in one end, far away from the disc-shaped gear 5, of the bevel gear 7; the hexagonal wrench 8 can be connected with the counter bore in a clamped mode, the counter bore drives the bevel gear 7 to rotate, and the rotation of the bevel gear 7 is facilitated through the counter bore design.

Preferably, the adjustable clamping device further comprises a connecting piece 1, a connecting hole is formed in the adjustable support 2, and one end of the connecting piece 1 penetrates through the connecting hole to be detachably connected with the chuck jaw 4.

Preferably, the connecting piece 1 is a compression screw or a positioning pin, in this embodiment, the adopted connecting piece 1 is a compression screw, and the connection and the disassembly of the adjustable support column 2 and the chuck jaw 4 are realized by screwing or loosening the compression screw, so that the multi-angle installation of the adjustable support column 2 is facilitated. Similarly, when the positioning pin is adopted, the positioning hole matched with the positioning pin is arranged on the end face of the chuck jaw 4.

Preferably, the arc surfaces of a plurality of different diameters are uniformly distributed on the side surface of the adjustable support column 2, and the uniformly distributed arc surfaces are convenient for the cooperative adjustment of the adjustable support columns 2, so that the clamping precision is improved.

Preferably, the number of the adjustable support column 2 and the number of the chuck jaws 4 are 3, and the number of the bevel gear 7 is 1, but not limited thereto, and those skilled in the art will appreciate that other numbers of chuck jaws 4 and bevel gears 7 can be implemented. Any one bevel gear 7 can drive the disc-shaped gear 5 to rotate along with the rotation of the disc-shaped gear 5, and further drive the Archimedes spiral groove carved on the disc-shaped gear 4 to rotate, so that the three chuck jaws 4 in the Archimedes spiral groove are close to or far away from the center at the same time, and the function of clamping or loosening a part to be machined is achieved.

Preferably, still include chuck body upper end cover 3, chuck body upper end cover 3 covers and establishes in 5 tops of dish-shaped gear, and is connected with chuck body lower end cover 6, sets up a plurality of chuck jaw recesses that are used for holding a plurality of chuck jaws 4 on the chuck body upper end cover 3, through setting up chuck body upper end cover 3, prevents effectively that processing debris from getting into inside the soft claw chuck, including internals, hoisting device's life.

Preferably, chuck body upper end cover 3 passes through bolt fixed connection with chuck body lower end cover 6, adopts bolt fixed connection's mode, conveniently carries out the dismantlement and the installation of chuck body upper end cover 3, can in time carry out the maintenance and the change of internals.

In another embodiment of the present invention, a method for using a flexible soft jaw chuck for a machine tool is provided, which includes: determining target adjustable support column mounting holes in a plurality of adjustable support column mounting holes of each chuck jaw 4 according to the size of a part to be processed, mounting a plurality of adjustable support columns 2 in the target adjustable support column mounting holes of the plurality of chuck jaws 4 in a one-to-one correspondence manner, adjusting the mounting angles of the adjustable support columns 2 according to the shape of the part to be processed, placing the part to be processed in a space surrounded by the adjustable support columns 2, and rotating a bevel gear 7 to the adjustable support columns 2 to clamp the part to be processed; after the machining is finished, the bevel gear 7 is rotated reversely until the plurality of adjustable supporting columns 2 loosen the part to be machined.

Specifically, in this embodiment, the adjustable support column 2 is detachably fixed to the chuck jaw 4 by the compression screw 1, the chuck jaw 4 is screwed into the corresponding groove formed in the upper end cover 3 of the chuck body, the corresponding embedded archimedes spiral groove protruding from the chuck jaw 4 is formed in the chuck jaw 4, and the hexagonal wrench 8 is inserted into the bevel gear 7, so that the part to be machined is clamped.

For the adjustable support column 2, arc surfaces with different diameters can be machined on the adjustable support column 2 according to the overall dimension of a part to be machined, 3 arc surfaces with different diameters are machined in the embodiment and are uniformly distributed on the adjustable support column 2, each adjustable support column 2 can be rotationally adjusted by 120 degrees, a new combination can be formed after each rotation, and each combination can be used for machining parts with different specifications, so that the parts with various specifications can be clamped through one soft jaw chuck. Meanwhile, the adjustable support column 2 is serialized and has various types, as shown in fig. 7, 2 arc surfaces with different diameters are processed on the external dimension of a cylinder, 180-degree rotation adjustment can be carried out to form different combinations, and compared with the previous adjustable support column 2, the adjustable support column can clamp smaller workpieces. In addition, the adjustable support column 2 is installed in other adjustable support column installation holes of the chuck jaws 4 after being disassembled and is uniformly distributed, and then parts of various specifications can be clamped through a soft jaw chuck in a wider range.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.