CN212497196U

CN212497196U - Film chuck with axial clamping function

Info

Publication number: CN212497196U
Application number: CN201922386141.2U
Authority: CN
Inventors: 孙鹏; 杨永举; 陈朝阳; 赵将
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-02-09
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a film chuck with axial clamping function, including chuck body, fender lid, pull rod, elastic disk, chuck body and fender lid fixed connection, the one end of pull rod pass chuck body and keep off and be connected with the hydro-cylinder behind the centre bore of lid, the other end passes the centre bore of elastic disk, be fixed with spacing dish and cardboard on the pull rod in the space between chuck body and the fender lid to spacing dish and cardboard fixed connection, the arch on the pull rod supports and leans on in the recess that spacing dish and cardboard formed, the elastic disk passes through transition dish fixed connection on the chuck body, the other end of pull rod passes the centre bore of transition dish, the through-hole that the rotation pressure bar passed chuck body edge on fixing the cardboard supports and leans on the work piece, fixed connection's clamping jaw supports and leans on the work piece on the elastic disk. The utility model discloses an axial power source is the hydro-cylinder, and the pulling force is adjustable and very big, can thoroughly solve virtual location problem.

Description

Film chuck with axial clamping function

Technical Field

The utility model discloses the machining field, concretely relates to film chuck with axial clamping function.

Background

The transmission is one of three large core assemblies of an automobile, the performance of the transmission directly influences the performance of the whole automobile, a key core component in the transmission is a gear, the precision of the gear has great influence on the transmission, an inner hole grinding process after the gear is subjected to heat treatment has great influence on the precision of the gear, particularly, the end jump precision of an inner hole directly influences the spiral line precision of the gear, an existing inner hole grinding clamp is generally a film chuck, but the existing film chuck is purely and radially tightened, the end jump of a processed product is guaranteed by an end face positioning block, but a problem occurs in production, in the part clamping process, a workpiece is not close to an end face positioning face, namely, the problem of deviation is solved, once the problem of deviation is solved, the end jump of the workpiece is out of tolerance, the spiral line precision of the gear is directly influenced, and the deviation is caused.

Disclosure of Invention

The utility model aims at providing a film chuck with axial clamping function guarantees that the work piece part locating surface leans on tight locating piece locating surface behind the clamping, eliminates work piece dress and adorns the risk partially, stops the work piece because the dress arouses partially that the end jumps the out-of-tolerance, the problem of helix out-of-tolerance.

The purpose of the utility model is realized through the following technical scheme:

a film chuck with an axial clamping function comprises a chuck body 14, a blocking cover 17, a pull rod 22 and an elastic disc 3, wherein the chuck body 14 is fixedly connected with the blocking cover 17, one end of the pull rod 22 passes through the central holes of the chuck body 14 and the stop cover 17 and then is connected with the oil cylinder, the other end of the pull rod passes through the central hole of the elastic disc 3, a limiting disc 32 and a clamping plate 16 are fixed on the pull rod 22 in the space between the chuck body 14 and the stop cover 17, and the limiting disc 32 is fixedly connected with the clamping plate 16, the bulge on the pull rod 22 is abutted against the groove formed by the limiting disc 32 and the clamping plate 16, the elastic disc 3 is fixedly connected on the chuck body 14 through the transition disc 30, the other end of the pull rod 22 penetrates through the central hole of the transition disc 30, the rotary compression rod 7 fixed on the clamping plate 16 penetrates through the through hole at the edge of the chuck body 14 and is abutted against a workpiece, and the clamping jaw fixedly connected on the elastic disc 3 is abutted against the workpiece.

As a more certain technical solution of the present invention: the device also comprises a positioning disc 2, a supporting pin 20 is fixedly connected to the transition disc 30, the supporting pin 20 penetrates through a through hole in the elastic disc 3, and the positioning disc 2 is fixedly connected to the supporting pin 20.

As a more excellent technical solution of the utility model: still include holder 1, holder 1 one end support on positioning disk 2 to in the arch on positioning disk 2 with stretch into the through-hole on the holder 1, positioning disk 2 and holder 1 are fixed as an organic whole, the other end of holder 1 supports and leans on clamping jaw 27.

As a more excellent technical solution of the utility model: the oil cylinder further comprises a flange 18, and the flange 18 is fixed on the outer side of the baffle cover 17 and sleeved on the oil cylinder.

As a more excellent technical solution of the utility model: still include positioning seat 10, connecting rod 12, unsteady pad 11, rectangular spring 8, rotatory depression bar 7, clamp plate 5, positioning seat 10's circular bead lean on the hole at chuck body 14's edge, the one end of cardboard 16 is connected with connecting rod 12 through first cylindric lock 15, the other end of connecting rod 12 passes through second cylindric lock 13 and connects inside positioning seat 10, and connecting rod 12 is located the inside one end of positioning seat 10 and supports and lean on rectangular spring 8, rectangular spring 8's the other end supports and leans on the inside of positioning seat 10, clamp plate 5 and positioning seat 10 fixed connection, unsteady pad 11 is installed in rectangular spring 8's inside.

The utility model discloses beneficial effect as follows:

1. compared with the common chuck, the axial clamping is added, and the virtual positioning problem is solved;

2. the chuck in the prior art can not realize the adjustment of axial tension to achieve the purpose that the axial force is far larger than the friction force of radial clamping because the axial power of the chuck is from the elastic deformation of the film chuck, and even if virtual positioning occurs after the radial clamping, the axial clamping can not completely straighten the chuck, and as a result, the problem of virtual positioning can not be completely solved, but the axial power of the chuck is from the oil cylinder, the tension can be adjusted and is very large, and the problem of virtual positioning can be completely solved;

3. one set of oil cylinder realizes two tightening forces, and has simple structure and easy processing;

4. the axial clamping force is adjustable, the axial clamping lags behind the radial clamping, so that the axial clamping does not influence the radial positioning, the axial force is far larger than the friction force generated by the radial force, the workpiece can be pulled, and the virtual positioning is avoided.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a front view of the present invention.

Detailed Description

The invention is described in further detail with reference to the figures and the detailed description.

As shown in fig. 1 and 2, a film chuck with axial clamping function comprises a chuck body 14, a stop cover 17, a pull rod 22 and an elastic disc 3, wherein the chuck body 14 is fixedly connected with the stop cover 17, one end of the pull rod 22 passes through the central holes of the chuck body 14 and the stop cover 17 and then is connected with the oil cylinder, the other end of the pull rod passes through the central hole of the elastic disc 3, a limiting disc 32 and a clamping plate 16 are fixed on the pull rod 22 in the space between the chuck body 14 and the stop cover 17, and the limiting disc 32 is fixedly connected with the clamping plate 16, the bulge on the pull rod 22 is abutted against the groove formed by the limiting disc 32 and the clamping plate 16, the elastic disc 3 is fixedly connected on the chuck body 14 through the transition disc 30, the other end of the pull rod 22 penetrates through the central hole of the transition disc 30, the rotary compression rod 7 fixed on the clamping plate 16 penetrates through the through hole at the edge of the chuck body 14 and is abutted against a workpiece, and the clamping jaw 27 fixedly connected on the elastic disc 3 is abutted against the workpiece.

In some embodiments, the positioning plate 2 is further included, a support pin 20 is fixedly connected to the transition plate 30, the support pin 20 penetrates through a through hole in the elastic plate 3, and the positioning plate 2 is fixedly connected to the support pin 20.

In some embodiments, the device further comprises a retainer 1, one end of the retainer 1 is supported on the positioning disk 2, the protrusion on the positioning disk 2 extends into the through hole on the retainer 1, the positioning disk 2 and the retainer 1 are fixed into a whole, and the other end of the retainer 1 abuts against the clamping jaw 27.

In some embodiments, the oil cylinder further comprises a flange 18, and the flange 18 is fixed on the outer side of the baffle cover 17 and sleeved on the oil cylinder.

In some embodiments, the clamping chuck further comprises a positioning seat 10, a connecting rod 12, a floating pad 11, a rectangular spring 8, a rotary pressure rod 7 and a pressure plate 5, wherein a shoulder of the positioning seat 10 abuts against a hole in the edge of the chuck body 14, one end of a clamping plate 16 is connected with the connecting rod 12 through a first cylindrical pin 15, the other end of the connecting rod 12 is connected inside the positioning seat 10 through a second cylindrical pin 13, one end of the connecting rod 12, which is located inside the positioning seat 10, abuts against the rectangular spring 8, the other end of the rectangular spring 8 abuts against inside the positioning seat 10, the pressure plate 5 is fixedly connected with the positioning seat 10, and the floating pad 11 is installed inside the rectangular spring 8.

The utility model discloses a theory of operation is: the axial tensioning work piece prevents that the part from adorning partially, rotatory depression bar has spiral transposition function, the purpose, the part can be installed when the axial unclamps, the depression bar can not hinder the part installation, the realization principle of this function is, the pull rod is spiral pull rod and spiral groove cooperation, the pull rod backshifts the in-process rotation, hug tight work piece, the realization principle of the taut function of pull rod axial is, the depression bar links to each other with the pull rod, the pull rod links to each other with the hydro-cylinder, the work piece needs the pull rod backshifting when radially step up, so that make the chuck resume the shape, radially step up the work piece, the pull rod drives the depression bar backshifting simultaneously, the axial tensioning work.

The working process of the utility model is as follows:

the first action is as follows: radial and axial clamping jaws are loosened (rotary loosening), and the processed workpiece is unloaded and loaded; the realization principle and the process are that the pull rod 22 is driven by the oil cylinder to extend forwards, and pushes the elastic disc 3 to deform, so as to drive the clamping jaw 27 fixed on the elastic disc to open; when the pull rod 22 extends forwards, the disc 32 is driven to move forwards, the disc 32 pushes the rod 12 to move forwards, and the rod 12 presses the rotary compression rod 7 to rotate and move forwards simultaneously.

And the second action: the radial and axial clamping jaws are clamped (rotary clamping), and a workpiece is clamped, the principle and the process are realized in such a way that the pull rod 22 is driven by the oil cylinder to pull back, the external force of the elastic disc 3 is removed, the original shape is recovered, and the clamping jaw 27 fixed on the elastic disc is driven to clamp; when the pull rod 22 is pulled backwards, the limiting disc 32 is directly driven to move backwards, the limiting disc 32 pulls the rod 12 to move backwards, and the rod 12 drives the rotary pressure rod 7 to rotate and move backwards simultaneously to be tensioned.

The power source is as follows: the radial clamping force is the elastic deformation force of the elastic disc, and the axial force is directly transmitted by the oil cylinder.

The sequence requires that: the radial direction is firstly clamped, and the axial direction is then clamped, so that the radial positioning precision is prevented from being influenced by radial force;

the requirement of the clamping force is as follows: the axial force is adjustable and far greater than the friction force caused by the radial force, so that the workpiece can be tensioned and tightly attached to the positioning surface, the axial force is realized by the oil cylinder, and the tension is adjusted by adjusting the pressure of the oil cylinder.

The chuck in the prior art cannot realize the adjustment of axial tension to achieve the aim that the axial force is far larger than the friction force of radial clamping because the axial power of the chuck is from the elastic deformation of the film chuck, and even if virtual positioning occurs after the radial clamping, the axial clamping cannot completely correct the axial force, so that the problem of virtual positioning cannot be completely solved.

Claims

1. A film chuck with axial clamping function, its characterized in that: comprises a chuck body (14), a blocking cover (17), a pull rod (22) and an elastic disc (3), wherein the chuck body (14) is fixedly connected with the blocking cover (17), one end of the pull rod (22) penetrates through center holes of the chuck body (14) and the blocking cover (17) and then is connected with an oil cylinder, the other end of the pull rod penetrates through the center hole of the elastic disc (3), a limiting disc (32) and a clamping plate (16) are fixed on the pull rod (22) in the space between the chuck body (14) and the blocking cover (17), the limiting disc (32) is fixedly connected with the clamping plate (16), a bulge on the pull rod (22) is abutted in a groove formed by the limiting disc (32) and the clamping plate (16), the elastic disc (3) is fixedly connected on the chuck body (14) through a transition disc (30), the other end of the pull rod (22) penetrates through the center hole of the transition disc (30), and a rotary compression bar (7) fixed on the clamping plate (16) penetrates through a through hole at the edge of the body (, the clamping jaw fixedly connected to the elastic disc (3) is abutted against a workpiece.

2. The film chuck with axial clamping function as claimed in claim 1, wherein: the elastic disc type spring support is characterized by further comprising a positioning disc (2), a supporting pin (20) is fixedly connected to the transition disc (30), the supporting pin (20) penetrates through a through hole in the elastic disc (3), and the positioning disc (2) is fixedly connected to the supporting pin (20).

3. The film chuck with axial clamping function as claimed in claim 1, wherein: still include holder (1), holder (1) one end support on positioning disk (2) to in the arch on positioning disk (2) stretched into the through-hole on holder (1), both fixed as an organic whole of positioning disk (2) and holder (1), the other end of holder (1) supports and leans on clamping jaw (27).

4. The film chuck with axial clamping function as claimed in claim 1, wherein: the oil cylinder is characterized by further comprising a receiving disc (18), wherein the receiving disc (18) is fixed on the outer side of the blocking cover (17) and sleeved on the oil cylinder.

5. The film chuck with axial clamping function as claimed in claim 1, wherein: still include positioning seat (10), connecting rod (12), unsteady pad (11), rectangle spring (8), rotatory depression bar (7), clamp plate (5), the circular bead of positioning seat (10) lean on the hole at the edge of chuck body (14), the one end of cardboard (16) is connected with connecting rod (12) through first cylindric lock (15), the other end of connecting rod (12) is passed through second cylindric lock (13) and is connected inside positioning seat (10), and connecting rod (12) are located the inside one end of positioning seat (10) and are supported and lean on rectangle spring (8), the other end of rectangle spring (8) is supported and is leaned on the inside of positioning seat (10), clamp plate (5) and positioning seat (10) fixed connection, the inside at rectangle spring (8) is installed in unsteady pad (11).