CN211939084U

CN211939084U - Lathe workbench floating clamping mechanism and lathe

Info

Publication number: CN211939084U
Application number: CN202020396405.2U
Authority: CN
Inventors: 郭玉龙; 徐长洪; 宋辉
Original assignee: Neway Cnc Equipment Suzhou Co ltd
Current assignee: Neway Cnc Equipment Suzhou Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-17
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a lathe workstation floating clamping mechanism, including support and centre gripping subassembly, the quantity of centre gripping subassembly is two, and two centre gripping subassemblies are acceptd in the support, and each centre gripping subassembly includes clamp piston and friction disc, and clamp piston is located between support and the friction disc and promotes the friction disc and remove on the support, forms the tight groove of clamp between two friction discs. Through the design, the floating clamping mechanism adopts radial clamping on the workbench, so that the axial acting force on the workbench is eliminated, and a series of problems of swinging, inclination, deflection and the like of the workbench in the axial direction can be avoided; the double-side floating clamping is adopted in the radial clamping, the clamping mechanism can automatically adjust the position of the friction plate according to the jumping of the workbench, the mechanism only generates friction force for preventing the workbench from rotating on the workbench, radial force is not generated on the workbench, the friction plate is changed into an arc shape the same as the workbench, and the larger friction area is enabled to have better clamping effect.

Description

Lathe workbench floating clamping mechanism and lathe

Technical Field

The utility model relates to a lathe especially relates to a lathe workstation floating clamping mechanism.

Background

The lathe is one of the widely used machine tools at present. The cutting tool is mainly used for cutting and processing inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces with any taper angles, complex rotary inner and outer curved surfaces, cylindrical threads, conical threads and the like, and can perform grooving, drilling, reaming, boring and the like.

When the lathe drills, bores and mills the straight slot, the worktable must be in a clamping state for ensuring the machining precision. The existing lathe mainly has the following problems: the clamping mechanism of the workbench adopts single-side clamping, plane clamping and axial clamping, and has the following defects: firstly, clamping force acts on the workbench during clamping to enable the workbench to swing, incline, deflect and the like; secondly, in the clamping process, the clamping mechanism contacts the workbench to impact the workbench, so that the precision of the workbench is changed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a floating clamping mechanism of a lathe workbench, which can eliminate the swinging, inclination and deflection of the workbench in the clamping process.

In order to overcome the defects of the prior art, the second object of the utility model is to provide a lathe which can eliminate the swinging, inclination and deflection of the worktable in the clamping process.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the floating clamping mechanism for the lathe workbench comprises a support and two clamping assemblies, wherein the two clamping assemblies are accommodated in the support, each clamping assembly comprises a clamping piston and a friction plate, the clamping piston is located between the support and the friction plate and pushes the friction plate to move on the support, and a clamping groove is formed between the two friction plates.

Further, the friction plate is arc-shaped.

Furthermore, the support is provided with an oil cylinder hole, the clamping piston is contained in the oil cylinder hole, and the clamping piston pushes the friction plate under the action of hydraulic oil.

Further, the number of the clamping pistons of each clamping assembly is four, and the number of the oil cylinder holes is the same as that of the clamping pistons.

Further, the clamping assembly also includes a tube fitting in communication with and supplying oil to the cylinder bore.

Further, the lathe workbench floating clamping mechanism further comprises a reset assembly, the reset assembly comprises a fastener and an elastic piece, the support is provided with a mounting hole, the fastener extends into the mounting hole and is fixed with the friction plate, the elastic piece is located in the mounting hole, and two ends of the elastic piece are respectively abutted against the support and the fastener.

Further, the elastic member is a disc spring.

Further, the floating clamping mechanism of the lathe workbench further comprises a fixing assembly, the fixing assembly comprises a fixing piece and a gasket, the gasket is located between the support and the fixing piece, and the fixing piece is matched with the support to fix the support.

The second purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides a lathe, includes workstation, base and unsteady clamping mechanism, the workstation rotate install in the base, unsteady clamping mechanism fixed mounting in the base, unsteady clamping mechanism includes support and centre gripping subassembly, the quantity of centre gripping subassembly is two the centre gripping subassembly accept in the support, each the centre gripping subassembly includes clamping piston and friction disc, clamping piston is located between the support with the friction disc and promote the friction disc is in move on the support, two form and press from both sides tight groove between the friction disc, workstation part is located press from both sides tight groove, two the friction disc centre gripping the both sides of workstation.

Further, the friction plate is arc-shaped.

Compared with the prior art, the utility model discloses lathe workstation floating clamping mechanism has following advantage:

(1) the original one-side oil cylinder is changed into four one-side oil cylinders, so that the stress surface of the workbench is more uniform, and the clamping force is larger to effectively prevent the workbench from swinging.

(2) The friction plate is changed into an arc shape which is the same as that of the workbench, so that the friction area is larger, and the clamping effect is better.

(3) The floating clamping mechanism adopts radial clamping to the workbench, eliminates the axial acting force to the workbench, and prevents the workbench from swinging, inclining, deflecting and other problems in the axial direction.

(4) In the radial clamping, double-side floating clamping is adopted, the clamping mechanism can automatically adjust the position of a friction plate according to the jumping of the workbench, and the mechanism only generates friction force for preventing the workbench from rotating and does not generate radial force for the workbench.

(5) When the worktable is indexed, a small clamping force is applied to enable the clamping mechanism to be always in contact with the worktable, and after the worktable is indexed in place, a large clamping force is applied to enable the worktable to be reliably positioned, so that the impact of the original clamping mechanism on the worktable during clamping is eliminated.

Drawings

FIG. 1 is a perspective view of the floating clamping mechanism of the lathe table of the present invention in a working state;

FIG. 2 is an enlarged view of the lathe table floating clamping mechanism of FIG. 1 at A;

FIG. 3 is a schematic structural view of the floating clamping mechanism of the lathe table of FIG. 1;

FIG. 4 is a cross-sectional view B-B of the lathe table floating clamping mechanism of FIG. 3;

FIG. 5 is an enlarged view of FIG. 4 at the lathe table floating clamping mechanism C;

fig. 6 is an enlarged view of the lathe table floating clamp mechanism D of fig. 4.

In the figure: 10. a work table; 20. a base; 30. a floating clamping mechanism; 31. a support; 310. an installation part; 311. a cylinder bore; 312. mounting holes; 32. a clamping assembly; 320. a pipe joint; 321. a clamping piston; 322. a friction plate; 323. a clamping groove; 33. a reset assembly; 330. a fastener; 331. an elastic member; 34. a fixing assembly; 340. a fixing member; 341. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, a lathe of the present invention includes a worktable 10, a base 20, and a floating clamping mechanism 30.

The table 10 is rotatably mounted on a base 20. In this embodiment, the edge of the table 10 is circular.

The floating clamping mechanism 30 includes a bracket 31, a clamping assembly 32, a reset assembly 33, and a fixed assembly 34. The bracket 31 includes two mounting portions 310. The two mounting portions 310 are located at the same end of the bracket 31. Each mounting portion 310 is provided with a cylinder bore 311 and a mounting hole 312. In the present embodiment, the number of the cylinder bores 311 is four, and the four cylinder bores 311 are uniformly distributed inside the mounting portion 310.

The number of clamp assemblies 32 is two. Each clamping assembly 32 includes a pipe fitting 320, a clamping piston 321, and friction plates 322. The pipe joint 320 is fixedly mounted to the bracket 31 and communicates with the cylinder bore 311. The pipe joint 320 injects hydraulic oil into the cylinder bore 311. The number of clamp pistons 321 is the same as the number of cylinder bores 311, and the clamp pistons are housed in the cylinder bores 311, respectively. In the present embodiment, the number of the cylinder bores 311 is four. The friction plate 322 is located on the side of the clamping piston 321. At this time, a clamping groove 323 is formed between the friction plates 322.

Reduction assembly 33 includes a fastener 330 and a resilient member 331. The fastening member 330 is inserted into the mounting hole 312 of the bracket 31 and fixed to the friction plate 322. The elastic member 331 is received in the mounting hole 312 and has two ends respectively abutting against the fastening member 330 and the bracket 31. In this embodiment, the fastening member 330 is a screw, and the elastic member 331 is a belleville spring. The fixing assembly 34 includes a fixing member 340 and a spacer 341. The pad 341 is located between the bracket 31 and the fixing member 340, and the bracket 31 is fixed to the base 20 by the fixing member 340.

When the lathe is used, the hydraulic oil in the cylinder holes 311 on both sides of the holder 31 is in parallel connection, and the pressure of the hydraulic oil is the same, so the clamp pistons 321 in the cylinder holes 311 on both sides are in a floating state, and the clamp force on both sides is always the same no matter what state the clamp pistons 321 on both sides are. The driving mechanism is driven by hydraulic pressure, and under the action of hydraulic oil, the clamping pistons 321 on the two sides move outwards and push the friction plates 322 to clamp the workbench 10. After the clamping is completed, the friction plate 322 and the clamping piston 321 are moved to both sides by the elastic member 331 and the fastening member 330, and gradually move away from the table 10.

Through the design, the support 31 is changed from the original one-side oil cylinder to the four one-side oil cylinders, so that the stress surface of the workbench 10 is more uniform, and the clamping force is larger to effectively prevent the workbench 10 from swinging. The friction plate 322 is changed into a circular arc shape which is the same as that of the workbench 10, so that the friction area is larger, and the clamping effect is better. The floating clamping mechanism 30 adopts radial clamping to the worktable 10, eliminates the axial acting force to the worktable 10, and prevents the worktable 10 from swinging, inclining, deflecting and other problems in the axial direction. In the radial clamping, double-sided floating clamping is adopted, and the floating clamping mechanism 30 automatically adjusts the position of the friction plate 322 according to the bounce of the worktable 10, and only generates friction force for preventing the worktable 10 from rotating on the worktable 10, but does not generate radial force on the worktable 10. When the worktable 10 is initially indexed, a small clamping force is provided to enable the floating clamping mechanism 30 to be always in contact with the worktable 10, and after the worktable 10 is indexed in place, a large clamping force is added to enable the worktable 10 to be reliably positioned, so that the impact of the original clamping mechanism on the worktable 10 during clamping is eliminated.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, all according to the equivalent modifications and evolutions of the present invention, which are made to the above embodiments by the essential technology, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a lathe workstation floating clamping mechanism, includes support and centre gripping subassembly, its characterized in that: the clamping device comprises a support, two clamping assemblies and two friction plates, wherein the two clamping assemblies are accommodated in the support, each clamping assembly comprises a clamping piston and a friction plate, the clamping piston is located between the support and the friction plate and pushes the friction plate to move on the support, and a clamping groove is formed between the two friction plates.

2. The lathe table floating clamping mechanism of claim 1, wherein: the friction plate is arc-shaped.

3. The lathe table floating clamping mechanism of claim 1, wherein: the support is provided with an oil cylinder hole, the clamping piston is contained in the oil cylinder hole, and the clamping piston pushes the friction plate under the action of hydraulic oil.

4. The lathe table floating clamping mechanism of claim 3, wherein: the number of the clamping pistons of each clamping assembly is four, and the number of the oil cylinder holes is the same as that of the clamping pistons.

5. The lathe table floating clamping mechanism of claim 4, wherein: the clamping assembly further comprises a pipe joint, and the pipe joint is communicated with the oil cylinder hole and supplies oil to the oil cylinder hole.

6. The lathe table floating clamping mechanism of claim 1, wherein: the lathe workbench floating clamping mechanism further comprises a reset assembly, the reset assembly comprises a fastener and an elastic piece, the support is provided with a mounting hole, the fastener extends into the mounting hole to be fixed with the friction plate, the elastic piece is located in the mounting hole, and two ends of the elastic piece are respectively abutted against the support and the fastener.

7. The lathe table floating clamping mechanism of claim 6, wherein: the elastic piece is a disc spring.

8. The lathe table floating clamping mechanism of claim 1, wherein: the floating clamping mechanism of the lathe workbench further comprises a fixing assembly, the fixing assembly comprises a fixing piece and a gasket, the gasket is located between the support and the fixing piece, and the fixing piece is matched with the support to fix the support.

9. The utility model provides a lathe, includes workstation, base and floating clamping mechanism, the workstation rotate install in the base, floating clamping mechanism fixed mounting in the base, its characterized in that: the floating clamping mechanism comprises a support and two clamping assemblies, the number of the clamping assemblies is two, the two clamping assemblies are accommodated in the support, each clamping assembly comprises a clamping piston and friction plates, the clamping piston is located between the support and the friction plates and pushes the friction plates to move on the support, a clamping groove is formed between the two friction plates, the workbench part is located in the clamping groove, and the two friction plates clamp two sides of the workbench.

10. The lathe of claim 9, wherein: the friction plate is arc-shaped.