CN217749376U

CN217749376U - Auxiliary driving device for processing shaft workpieces

Info

Publication number: CN217749376U
Application number: CN202221685353.6U
Authority: CN
Inventors: 景登辉; 景治乾; 吕胜杰
Original assignee: Shaanxi Far East Railway Equipment Co ltd
Current assignee: Shaanxi Far East Railway Equipment Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-11-08
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses an axle type workpiece machining is with auxiliary drive device, including the multi-jaw chuck, its one side has a plurality of jack catchs that set up along the circumference interval. The auxiliary driving device comprises a fastening part connected with the shaft workpiece, and a driven part in contact with each jaw side wall is arranged on one side of the fastening part. The auxiliary driving device solves the problem that the clamping jaw clamps the circumferential surface of the unevenness of the shaft workpiece and has deflection, improves the clamping precision of the shaft workpiece, and simultaneously ensures that the rotation of the chuck can be transmitted to the shaft workpiece and drives the shaft workpiece to synchronously rotate so that the processing operation can be smoothly carried out. The conical surface structure of the contact section of the driven rod and the close driven rod are limited between the adjacent clamping jaws, so that the contact gap between the driven rod and the side wall of the clamping jaw can be effectively eliminated, the rotation inertia of the shaft workpiece has the rotation difference with the chuck, and the machining precision of the shaft workpiece is further improved.

Description

Auxiliary driving device for machining shaft workpieces

Technical Field

The utility model relates to an axle type work piece processing technology field especially relates to an axle type work piece processing is with auxiliary drive device.

Background

A shaft-type workpiece is a workpiece structure widely machined in machining, and the machining mode is that after an end of the shaft-type workpiece is clamped and fastened by a clamping jaw (shown as 10a in the attached drawing of the specification), the workpiece is driven to rotate by the rotation of a machine tool spindle, and a tool performs turning on the surface of the shaft-type workpiece by feed. When the shaft workpiece is longer, a tailstock bracket (20 shown in the figure) attached to the machine tool is usually adopted at the tail end of the shaft workpiece for central rotation support, so that the rotation deflection of the tail end of the longer shaft workpiece is reduced.

Before processing, the shaft workpiece is generally a blank material, the surface precision of the shaft workpiece is poor, after the shaft workpiece is clamped by the clamping jaws, the shaft workpiece is eccentric by the clamping ends to cause rotary deflection, the processing and forming precision is affected, the deflection can also cause excessive contact between the surface of the shaft workpiece and a cutter, the cutter cutting amount is too large, the cutter is damaged, and the potential safety hazard problem exists.

Disclosure of Invention

The utility model aims at providing a shaft workpiece processing is with auxiliary drive device, and it has solved the periphery centre gripping through the jack catch to shaft workpiece unevenness and has had the problem of beat, improves the clamping precision and the machine-shaping precision of shaft workpiece.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an axle type is auxiliary drive device for work piece processing, includes the multi-jaw chuck, and its one side has a plurality of jack catchs along the circumference interval setting, its characterized in that: the auxiliary driving device comprises a fastening part connected with the shaft workpiece, and a driven part in contact with each jaw side wall is arranged on one side of the fastening part.

Preferably, the fastening portion comprises a sleeve ring sleeved at the end portion of the shaft workpiece, fastening bolts in surface contact with the shaft workpiece penetrate through the sleeve ring along the circumferential interval, and an anti-abrasion pad is embedded at the end portion of each fastening bolt.

Preferably, the driven part comprises a driven rod which is threaded on the outer wall of the collar at intervals, and the front half part of the driven rod is provided with a contact section with a smooth peripheral surface structure.

Preferably, the contact section of each driven rod is provided with a conical surface structure.

Preferably, the contact sections of two adjacent driven rods are in contact with the adjacent side walls of the adjacent claws.

The beneficial effects of the utility model are that: the auxiliary driving device solves the problem of deflection caused by clamping of the clamping jaws on the uneven circumferential surface of the shaft workpiece, improves the clamping precision of the shaft workpiece, and simultaneously ensures that the rotation of the chuck can be transmitted to the shaft workpiece and drives the shaft workpiece to rotate synchronously so as to enable the processing operation to be carried out smoothly. The conical surface structure of the contact section of the driven rod and the close driven rod are limited between the adjacent clamping jaws, so that the contact gap between the driven rod and the side wall of the clamping jaw can be effectively eliminated, the rotation inertia of the shaft workpiece has the rotation difference with the chuck, and the machining precision of the shaft workpiece is further improved.

Drawings

Fig. 1 is the centering and clamping schematic diagram of the two ends of the shaft workpiece of the utility model.

Fig. 2 is a front view structural diagram of the multi-jaw chuck of the present invention.

Fig. 3 is a front view structural diagram of the auxiliary driving device of the present invention.

Fig. 4 is a side view structure diagram of the auxiliary driving device of the present invention.

Fig. 5 is a front view structure diagram of the auxiliary driving device and the multi-jaw chuck of the present invention.

Fig. 6 is a schematic view of the auxiliary driving device cooperating with the shaft workpiece.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 6, an auxiliary driving device for machining a shaft-type workpiece includes a multi-jaw chuck 10 having a plurality of jaws 10a arranged at intervals in a circumferential direction on one side thereof. After clamping and fastening the end of a shaft workpiece (50 in the figure) by the jaws 10a, the workpiece is rotated by the rotation of the machine tool spindle 30, and the tool turns the surface of the shaft workpiece by feeding. Before machining, the shaft workpiece is generally a blank material, the surface precision of the shaft workpiece is poor, and after the shaft workpiece is clamped by the clamping jaws 10a, the shaft workpiece is eccentric by the clamped end to cause rotary deflection, so that the machining and forming precision is influenced.

Therefore, in order to solve the above problems, the present invention provides an auxiliary driving device, specifically, as shown in fig. 3 to 4 and 6, the auxiliary driving device includes a fastening portion connected to the shaft-like workpiece, and a driven portion contacting with each of the side walls of the jaws 10a is provided on one side of the fastening portion. Before the auxiliary driving device is used, the standard centering rod 40 is clamped by the plurality of clamping jaws 10a in the multi-jaw chuck 10, the standard centering rod and the tailstock support together rotatably support the axle centers of two ends of the shaft workpiece, then the fastening part is connected with the end part, close to the clamping jaws 10a, of the shaft workpiece, the fastening part is connected with the side wall of each clamping jaw 10a through the driven part, the driven part is driven in the rotating process of the multi-jaw chuck 10, and the shaft workpiece is driven to synchronously rotate through the fastening part, so that the machining operation is realized. The problem that the circumferential surface of shaft workpieces is clamped by the clamping claws 10a to cause deflection is effectively solved, the clamping precision of the shaft workpieces is improved, and meanwhile, the rotation of the chuck 10 can be transmitted to the shaft workpieces and drives the shaft workpieces to synchronously rotate, so that the machining can be smoothly carried out.

Specifically, as shown in fig. 3, the fastening portion includes a sleeve ring 1 sleeved at the end of the shaft workpiece, and fastening bolts 2 contacting with the surface of the shaft workpiece are arranged on the sleeve ring 1 along the circumferential direction at intervals. During operation, the lantern ring 1 is sleeved at the end part of the shaft workpiece and tightly pushed against the circumferential surface of the shaft workpiece through the rotation of the fastening bolts 2, so that the fastening connection between the fastening bolts and the shaft workpiece is realized.

In order to avoid the abrasion problem caused by the fact that the end part of the fastening bolt 2 is in rotary contact with the circumferential surface of the shaft workpiece in the rotary fastening process, an anti-abrasion pad 21 is embedded into the end part of the fastening bolt 2 and is in contact with the circumferential surface of the shaft workpiece, and the contact abrasion between the end part of the fastening bolt 2 and the circumferential surface of the shaft workpiece can be effectively avoided.

Specifically, as shown in fig. 3 to 4, the driven part includes a driven rod 3 threaded on the outer wall of the collar 1 at intervals, and the front half part of the driven rod 3 is a contact section 3a with a smooth circumferential surface structure. After the end parts of the lantern ring 1 and the shaft workpiece are connected and fastened, the driven rod 3 rotates to enable the contact section 3a to approach and contact the side wall of the claw 10a towards the claw 10a, and the driven rod 3 is driven to rotate through the chuck in the process that the claw 10a drives the chuck to rotate, so that the lantern ring 1 and the shaft workpiece are driven to synchronously rotate through the chuck.

In order to eliminate the contact gap between the contact section 3a of the driven rod 3 and the side wall of the jaw 10a, it is preferable that the contact section 3a of each of the driven rods 3 is provided with a tapered surface structure. In the process of rotating the driven rod 3, the conical outer peripheral surface of the contact section 3a gradually clings to and contacts with the side walls of the clamping jaws 10a and is fastened, so that the contact gap between the contact section 3a and the side walls of the clamping jaws 10a can be effectively eliminated, the shaft workpiece and the chuck 10 can synchronously rotate, and the processing precision is improved.

In order to avoid the relative rotation problem of the shaft workpiece and the chuck 10 due to the rotation inertia caused by the gravity, as shown in fig. 3 and 5-6, the contact sections 3a of two adjacent driven rods 3 are contacted with the adjacent side walls of the adjacent jaws 10a. The structure can enable the close driven rods 3 to be limited between the adjacent clamping jaws 10a, thereby effectively eliminating the rotation inertia of the shaft workpiece and the rotation difference between the shaft workpiece and the clamping chuck, and further improving the processing precision of the shaft workpiece.

The principle of the utility model is that: during operation, the lantern ring 1 is sleeved at the end part of the shaft workpiece and is tightly propped against the circumferential surface of the shaft workpiece through the rotation of the fastening bolts 2, so that the fastening connection between the shaft workpiece and the fastening bolts is realized; the both ends of axle type work piece are passed through standard centering rod and the tailstock support of centre gripping in the jack catch 10a and are carried out the rotation support with the both ends axle center of axle type work piece jointly next, through rotatory driven rod 3 is followed for contact section 3a is close to and contacts the lateral wall of jack catch 10a and pastes the fastening mutually towards jack catch 10a, drives rotatory in-process at jack catch 10a through the chuck, is driven pole 3 through the drive, and then drives lantern ring 1 and axle type work piece and lead to chuck synchronous revolution, and the cutter carries out lathe work through the feed to axle type work piece surface at last.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an axle type is auxiliary drive device for work piece processing, includes multi-jaw chuck (10), and its one side has a plurality of jack catchs (10 a) that set up along circumference interval, its characterized in that: the auxiliary driving device comprises a fastening part connected with the shaft workpiece, and a driven part contacted with the side wall of each clamping jaw (10 a) is arranged on one side of the fastening part.

2. The auxiliary drive device for processing the shaft-type workpiece as claimed in claim 1, wherein: fastening portion establishes lantern ring (1) at axle type work piece tip including the cover wear to be equipped with along circumference interval on lantern ring (1) with axle type work piece surface contact's fastening bolt (2), and fastening bolt (2)'s tip still imbeds wear pad (21).

3. The auxiliary driving device for processing the shaft-type workpiece as claimed in claim 2, wherein: the driven part comprises a driven rod (3) which is threaded on the outer wall of the lantern ring (1) at intervals, and the front half part of the driven rod (3) is provided with a contact section (3 a) with a smooth peripheral surface structure.

4. The auxiliary drive device for processing the shaft-type workpiece as claimed in claim 3, wherein: the contact section (3 a) of each driven rod (3) is provided with a conical surface structure.

5. The auxiliary driving device for processing the shaft-type workpiece as claimed in claim 4, wherein: wherein the contact sections (3 a) of two adjacent driven rods (3) are in contact with the adjacent side wall of the adjacent claw (10 a).