CN214212266U

CN214212266U - Numerical control lathe clamping jaw mechanism

Info

Publication number: CN214212266U
Application number: CN202023203481.6U
Authority: CN
Inventors: 杨军
Original assignee: Shanghai Yixin Metallurgical Equipment Manufacturing Co ltd
Current assignee: Shanghai Yixin Metallurgical Equipment Manufacturing Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-17
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a numerical control lathe clamping jaw mechanism belongs to the field of machine tool anchor clamps, and it is including being located the multi-jaw chuck on the lathe, be provided with a plurality of clamping jaws on the multi-jaw chuck, it is a plurality of the clamping jaw is close to the one side of work piece and all sets up to the clamping face, logical groove has been seted up to the clamping face, lead to the groove edge the thickness direction of clamping jaw runs through the clamping jaw, when the work piece is got to the clamping jaw clamp, the work piece inserts the degree of depth that leads to the inslot is less than lead to the degree of depth of groove, this application has the contact point that can increase clamping jaw and work piece to the effect of the clamp effect of getting of reinforcing clamping jaw.

Description

Numerical control lathe clamping jaw mechanism

Technical Field

The application relates to the field of machine tool fixtures, in particular to a numerical control lathe clamping jaw mechanism.

Background

The numerically controlled lathe is one of the widely used numerically controlled machines 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 a workpiece is machined by a lathe, the workpiece needs to be clamped by a clamp, and then the clamp rotates to drive the workpiece to rotate so as to realize the circular cutting machining of the workpiece by a cutter.

In view of the above related technologies, the inventor considers that a contact surface between a clamping jaw of a fixture and a cylindrical workpiece is a plane, when the fixture clamps the workpiece, the clamping jaw contacts with an outer wall of the workpiece under a linear acting force, a friction force between the clamping jaw and the workpiece is not very large, and when the fixture drives the workpiece to rotate, the workpiece is easy to slip, so that a clamping effect of the clamping jaw is affected.

SUMMERY OF THE UTILITY MODEL

In order to increase the contact point of clamping jaw and work piece to the effect is got to the clamp of reinforcing clamping jaw, this application provides a numerical control lathe clamping jaw mechanism.

The application provides a numerical control lathe clamping jaw mechanism adopts following technical scheme:

the utility model provides a numerical control lathe clamping jaw mechanism, is including being located the multi-jaw chuck on the lathe, be provided with a plurality of clamping jaws on the multi-jaw chuck, it is a plurality of the clamping jaw is close to the one side of work piece and all sets up to the clamping face, logical groove has been seted up to the clamping face, lead to the groove edge the thickness direction of clamping jaw runs through the clamping jaw, when the work piece is got to the clamping jaw clamp, the work piece inserts the degree of depth that leads to the inslot is less than lead to the degree of depth of groove.

By adopting the technical scheme, when the multi-jaw chuck clamps the workpiece, the workpiece is placed between the clamping jaws, then the clamping jaws are close to each other, the workpiece is partially positioned in the through groove, the contact mode of the workpiece and the clamping surface is changed from one line contact into two line contacts, the contact points of the clamping jaws and the workpiece are increased, the friction force between the clamping jaws and the workpiece is increased, and the clamping effect of the clamping jaws is enhanced; when the clamping jaws clamp workpieces with different diameters, the depth of the workpiece extending into the through groove is inconsistent, and the depth of the through groove is larger than the depth of the workpiece extending into the through groove, so that the clamping jaws can be suitable for clamping workpieces with different diameters.

Optionally, an abutting portion is arranged in the through groove, and the abutting portion is used for abutting against a part of the workpiece located in the through groove.

Through adopting above-mentioned technical scheme, set up butt portion in logical inslot, when the work piece part was located logical inslot, utilized butt portion to support the lateral wall of work piece tightly, can strengthen the tight effect of clamp of clamping jaw to a certain extent.

Optionally, the abutting portion includes an elastic piece, and two sides of the elastic piece are respectively and fixedly connected to two opposite inner walls of the through groove on one side close to the workpiece.

Through adopting above-mentioned technical scheme, when the work piece was got to the clamping jaw clamp, the work piece can have certain extrusion to the flexure strip, thereby the flexure strip produces the radian that changes the flexure strip to be applicable to the clamp of the work piece to different diameters and get.

Optionally, the abutting portion further comprises a plurality of compression springs, the length directions of the compression springs are all arranged along the depth direction of the through groove, two ends of each compression spring in the length direction are fixedly connected to the bottom surface of the through groove and the elastic sheet respectively, and the elastic sheet has a certain radian when being located in an initial state.

By adopting the technical scheme, when the workpiece is clamped by the clamping jaw, the part of the workpiece in the through groove has a certain radian, so that the service life of the elastic sheet can be prolonged to a certain extent, and the elastic sheet has a certain radian when being positioned in an initial state and the radian is smaller than that of the workpiece, so that the phenomenon that the service life of the elastic sheet is influenced by large deformation can be avoided; when the compression spring is extruded by the workpiece, the compression spring deforms, the deformation force can generate certain supporting force on the workpiece, and the supporting effect of the elastic piece on the workpiece can be enhanced to a certain degree.

Optionally, the bottom of the through groove is set to be an arc-shaped surface, and the arc-shaped surface is consistent with the radian of the elastic sheet in the initial state.

Through adopting above-mentioned technical scheme, when processing multi-jaw chuck, in order to make things convenient for processing, guarantee to lead to the radian of groove bottom surface and the initial radian of flexure strip and keep unanimous, then all adopt the compression spring of same specification, be favorable to processing the chuck.

Optionally, the elastic sheet is made of flexible rubber.

Through adopting above-mentioned technical scheme, flexible rubber is soft material, can laminate better in the work piece lateral wall, when the clamping jaw drives the work piece and rotates, the elastic sheet of rubber material can produce great frictional force with between the work piece, can prevent to a certain extent that the work piece from skidding, does benefit to the processing work piece.

Optionally, a cylinder is arranged on one side of the multi-jaw chuck, a telescopic rod of the cylinder faces upwards, a supporting plate used for supporting a workpiece is fixedly connected to the upper end of the telescopic rod of the cylinder, and a limiting part used for clamping the cylinder is arranged on the multi-jaw chuck.

Through adopting above-mentioned technical scheme, when giving the multi-jaw chuck material loading, utilize the position of locating part restriction cylinder, place the work piece in the backup pad, start the cylinder, the telescopic link of cylinder stretches out and drives the backup pad and rises, and the backup pad drives and waits to process the work piece and shifts up to the position that a plurality of clamping jaws pressed from both sides, need not the manpower and moves the work piece and carry out the material loading, can use manpower sparingly to a certain extent.

Optionally, the limiting part includes a fixture block, the fixture block is fixedly connected to the side wall of the cylinder, and a plurality of limiting holes for clamping the fixture block are formed in the end face array of the multi-jaw chuck close to the workpiece.

By adopting the technical scheme, because the workpiece to be processed has certain weight, the clamping block of the cylinder is clamped with the limiting hole of the multi-jaw chuck in order to reduce the shaking generated when the cylinder drives the workpiece to move upwards, so that the cylinder can be fixed on the multi-jaw chuck, and the cylinder can stably drive the workpiece to move upwards.

Optionally, the upper surface of the supporting plate is concave.

Through adopting above-mentioned technical scheme, when the cylinder drove the work piece and shifts up, be located concave surface position department with the work piece, the concave surface can prevent work piece roll-off backup pad.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the workpiece part is positioned in the through groove, the contact mode of the workpiece and the clamping surface is changed from one line contact into two line contacts, so that the contact points of the clamping jaw and the workpiece can be increased, and the clamping effect of the clamping jaw is enhanced;

2. the workpiece is placed on the supporting plate, the telescopic rod of the air cylinder extends out to drive the supporting plate to ascend, the supporting plate drives the workpiece to be machined to move up to a position suitable for clamping, the workpiece does not need to be moved manually to be fed, and labor can be saved to a certain extent.

Drawings

Fig. 1 is a schematic structural diagram of a numerical control lathe clamping jaw mechanism according to an embodiment of the present application;

fig. 2 is a schematic view of the overall structure of the chuck of fig. 1.

Description of reference numerals: 1. a chuck; 2. a clamping jaw; 3. a clamping surface; 4. an abutting portion; 41. an elastic sheet; 42. a compression spring; 5. a through groove; 6. a cylinder; 7. a fixed block; 8. a support plate; 9. a limiting member; 91. a clamping block; 92. and a limiting hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a numerical control lathe clamping jaw 2 mechanism. Referring to fig. 1, the clamping jaw 2 mechanism includes a multi-jaw chuck 1, which is a four-jaw chuck 1 in this embodiment, the four-jaw chuck 1 includes four clamping jaws 2, the four clamping jaws 2 all slide along the radial direction of the chuck 1, and the four clamping jaws 2 clamp a workpiece to be processed together; when a workpiece is machined, the chuck 1 rotates, the four clamping jaws 2 drive the workpiece to rotate, and the cutter on one side performs circular cutting machining on the workpiece.

Referring to fig. 1 and 2, one surface, close to a workpiece, of each clamping jaw 2 is set to be a clamping surface 3, the clamping surfaces 3 are set to be planes, rectangular through grooves 5 are formed in the four clamping surfaces 3, the opening direction of each through groove 5 is arranged along the length direction of each clamping jaw 2, each through groove 5 penetrates through each clamping jaw 2 along the thickness direction of each clamping jaw 2, and when the four clamping jaws 2 clamp the workpiece simultaneously, the workpiece is in contact with the clamping surfaces 3 in a two-line abutting mode; the depth of the through groove 5 is larger than the radius of the workpiece, so that when the workpiece part is clamped into the through groove 5, the side wall of the workpiece can be prevented from being abutted to the bottom surface of the through groove 5.

Referring to fig. 1 and 2, an abutting portion 4 is disposed inside the through slot 5 and near the opening of the clamping surface 3, the abutting portion 4 includes an elastic sheet 41 and a plurality of compression springs 42, the elastic sheet 41 is made of flexible rubber, the elastic sheet 41 covers the opening, two sides of the elastic sheet 41 are respectively and fixedly connected to two opposite sidewalls of the through slot 5, the elastic sheet 41 has a slight radian in an initial state, and when the clamping jaw 2 clamps a workpiece, the elastic sheet 41 is attached to the sidewalls of the workpiece; the compression spring 42 is positioned inside the through groove 5, the length direction of the compression spring 42 is arranged along the depth direction of the through groove 5, and two ends of the compression spring 42 are respectively welded on the bottom surface of the through groove 5 and one surface of the elastic sheet 41, which is far away from the clamping surface 3; when the workpiece presses the elastic piece 41, the elastic piece 41 deforms towards the inside of the through groove 5, the elastic piece 41 presses the compression spring 42 to deform, and the reaction force of the compression spring 42 can support the elastic piece 41 to generate acting force for tightly abutting against the workpiece.

Referring to fig. 1 and 2, the bottom surface of the through groove 5 is an arc surface, and the radian of the bottom surface of the through groove 5 is consistent with the radian of the elastic sheet 41 in the initial state, so that the compression spring 42 with the same specification can be adopted in the process of processing the chuck 1.

Referring to fig. 1 and 2, an air cylinder 6 is arranged on one side of a chuck 1, a telescopic rod of the air cylinder 6 is vertically upward, a fixing block 7 is welded at the upper end of the telescopic rod of the air cylinder 6, the cross section of the fixing block 7 is rectangular, a supporting plate 8 is welded on the side wall of the fixing block 7, and the upper surface of the supporting plate 8 is an arc-shaped concave surface, so that a workpiece can be conveniently placed on the upper surface of the supporting plate 8, and the workpiece is prevented from sliding off the supporting plate 8; the telescopic link of cylinder 6 drives fixed block 7 and moves upward, and fixed block 7 drives backup pad 8 and moves upward to the clamp that is fit for chuck 1 and gets the position.

Considering that cylinder 6 can lead to cylinder 6 to rock when driving the work piece and shifting up, referring to fig. 1 and fig. 2, set up locating part 9 on cylinder 6, locating part 9 includes rectangle fixture block 91, and fixture block 91 welds in the lateral wall upper end of cylinder 6, and chuck 1 is close to the one side array of work piece and has seted up four spacing holes 92 with fixture block 91 cooperation joint, and when fixture block 91 and spacing hole 92 joint, chuck 1 can play certain supporting role to cylinder 6.

The implementation principle of a numerical control lathe clamping jaw mechanism in the embodiment of the application is as follows: when the chuck 1 is loaded, the air cylinder 6 is moved to one side of the chuck 1, a clamping block 91 on the side wall of the air cylinder 6 is clamped into a limiting hole 92 of the chuck 1, the air cylinder 6 is started, a telescopic rod of the air cylinder 6 moves upwards to drive a workpiece to move upwards to a proper clamping position, the workpiece is placed between the four clamping jaws 2, the four clamping jaws 2 are driven to approach each other, when the clamping surface 3 abuts against the side wall of the workpiece, part of the workpiece is clamped into the through groove 5, the workpiece extrudes the elastic sheet 41, the elastic sheet 41 and the compression spring 42 deform simultaneously, and the elastic sheet 41 is attached to the side wall of the workpiece through deformation force; after clamping is finished, the air cylinder 6 is moved, the air cylinder 6 is separated from the chuck 1, and the chuck 1 can be driven to rotate so as to drive the workpiece to be processed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a numerical control lathe gripper mechanism, is including being located multi-jaw chuck (1) on the lathe, be provided with a plurality of clamping jaws (2) on multi-jaw chuck (1), its characterized in that: a plurality of the one side that clamping jaw (2) are close to the work piece all sets up to clamping face (3), logical groove (5) have been seted up in clamping face (3), it follows to lead to groove (5) the thickness direction of clamping jaw (2) runs through clamping jaw (2), when clamping jaw (2) clamp was got the work piece, the work piece inserted the degree of depth that leads to in groove (5) is less than the degree of depth that leads to groove (5).

2. A numerically controlled lathe jaw mechanism as in claim 1, wherein: and the through groove (5) is internally provided with a butting part (4), and the butting part (4) is used for butting the part of the workpiece positioned in the through groove (5).

3. A numerically controlled lathe jaw mechanism as in claim 2, wherein: the abutting part (4) comprises an elastic sheet (41), and two sides of the elastic sheet (41) are respectively and fixedly connected to two opposite inner walls of one side, close to the workpiece, of the through groove (5).

4. A numerically controlled lathe jaw mechanism as in claim 3, wherein: butt portion (4) still include a plurality of compression spring (42), and is a plurality of compression spring (42)'s length direction all follows the direction of depth setting that leads to groove (5), compression spring (42)'s length direction's both ends respectively fixed connection in lead to groove (5) bottom surface with on flexure strip (41), flexure strip (41) have certain radian when being located initial condition.

5. A numerically controlled lathe gripper mechanism according to claim 4, wherein: the bottom of the through groove (5) is set to be an arc-shaped surface, and the arc-shaped surface is consistent with the radian of the elastic sheet (41) in the initial state.

6. A numerically controlled lathe jaw mechanism as in claim 3, wherein: the elastic sheet (41) is made of flexible rubber.

7. A numerically controlled lathe jaw mechanism as in claim 1, wherein: multi-jaw chuck (1) one side is provided with cylinder (6), the telescopic link of cylinder (6) up, the telescopic link upper end fixedly connected with of cylinder (6) is used for supporting backup pad (8) of work piece, be provided with on multi-jaw chuck (1) and be used for the joint locating part (9) of cylinder (6).

8. A numerically controlled lathe jaw mechanism as in claim 7, wherein: the limiting part (9) comprises a clamping block (91), the clamping block (91) is fixedly connected to the side wall of the air cylinder (6), and a plurality of limiting holes (92) for clamping the clamping block (91) are formed in the end face array of the multi-jaw chuck (1) close to the workpiece.

9. A numerically controlled lathe jaw mechanism as in claim 7, wherein: the upper surface of the supporting plate (8) is concave.