CN216541996U

CN216541996U - Clamp device for gear shaft machining

Info

Publication number: CN216541996U
Application number: CN202122782100.2U
Authority: CN
Inventors: 冉劼
Original assignee: Ivett Chongqing Intelligent Technology Co ltd
Current assignee: Ivett Chongqing Intelligent Technology Co ltd
Priority date: 2021-11-14
Filing date: 2021-11-14
Publication date: 2022-05-17
Anticipated expiration: 2031-11-14

Abstract

The utility model belongs to the technical field of gear shaft processing, and particularly relates to a clamp device for gear shaft processing; the transmission shaft on the gear shaft can extend into the mounting hole and enables the tip to abut against a central hole in the end face of the transmission shaft; the upper end of the transmission shaft is sleeved with a jacket seat, the jacket seat comprises a spring jacket at the lower end, the spring jacket is arranged with a smaller diameter at the lower end and a larger diameter at the upper end, and the upper end of the mounting hole is provided with a matching hole section with a larger diameter at the upper end and a smaller diameter at the lower end and used for the spring jacket to vertically extend into and match; a plurality of strip-shaped tightening ports are uniformly distributed on the lower end surface of the spring jacket in the wall thickness direction and divide the spring jacket into a plurality of arc-shaped plate-shaped tightening parts; the clamping device has the advantages of simple structure, reliable clamping, capability of better avoiding damage to the clamped surface of the gear shaft and convenience in clamping operation.

Description

Clamp device for gear shaft machining

Technical Field

The utility model belongs to the technical field of gear shaft machining, and particularly relates to a clamp device for gear shaft machining.

Background

Fig. 3 shows a gear shaft structure, which includes a transmission shaft integrally having a stepped shaft structure, a transmission gear integrally formed at one end of the transmission shaft, a connection screw hole recessed in the middle of the outer end surface of the transmission gear, and a central hole and a key groove formed at the other end of the transmission shaft.

When the gear shaft is machined, the transmission shaft part is usually machined, and then the transmission shaft part is used as a clamping reference to clamp and machine the transmission gear part. The current anchor clamps that are used for clamping to process above-mentioned structure gear shaft adopt three-jaw chuck or press from both sides the cover to carry out the clamping to the transmission shaft part of gear shaft usually, adopt three-jaw chuck to carry out the clamping and have the shortcoming that the clamping area is little, adopt to press from both sides the cover clamping back, press from both sides the cover and draw in and press from both sides tightly the transmission shaft outer circumference, press from both sides the inner circumferential surface of cover and can be the slope setting, the transmission shaft atress is inhomogeneous, this just makes the position that epaxial and the cover that presss from both sides that tightens up the end and correspond produces the clamp mark easily. Secondly, adopt three-jaw chuck and clamping sleeve to press from both sides tightly, rely on to hold tightly with the axial spacing to the transmission shaft, need bigger clamp force, and the epaxial quilt clamping face of transmission suffers destruction.

Therefore, how to provide a clamping device for processing a gear shaft, which has a simple structure, is reliable in clamping, can better avoid damage to a clamped surface of the gear shaft, and can facilitate clamping operation, becomes a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a simple structure, the clamping is reliable and can avoid better causing destruction to the gear shaft by the clamping face, can make things convenient for the clamping operation the fixture device for gear shaft processing.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a clamp device for processing a gear shaft comprises a base, wherein a vertical mounting hole is formed in the base, a tip is arranged at the bottom of the mounting hole, a transmission shaft on the gear shaft can extend into the mounting hole, and the tip is enabled to abut against a central hole formed in the end face of the transmission shaft; the upper end of the transmission shaft is sleeved with a jacket seat, the jacket seat comprises a spring jacket at the lower end, the spring jacket is arranged with a smaller diameter at the lower end and a larger diameter at the upper end, and the upper end of the mounting hole is provided with a matching hole section with a larger diameter at the upper end and a smaller diameter at the lower end and used for the spring jacket to vertically extend into and match; a plurality of strip-shaped tightening ports are uniformly distributed on the lower end surface of the spring jacket in the wall thickness direction and divide the spring jacket into a plurality of arc-shaped plate-shaped tightening parts; clamping pads made of flexible materials are attached to the inner sides of the tightening parts respectively; a pressing structure is arranged between the jacket base and the base, and the pressing structure can drive the jacket base to move downwards and enable the spring jacket to be folded inwards to be clamped on the outer circumferential surface of the transmission shaft.

Therefore, when the device works, the transmission shaft of the gear shaft penetrates through the clamping sleeve seat, the lower end of the transmission shaft is abutted and supported on the top tip at the lower end of the mounting hole, then the spring clamping sleeve is in downward sliding fit in the matching hole section at the upper end of the mounting hole by adopting a downward pressing structure, and meanwhile, the spring clamping sleeve is folded inwards, so that the clamping pad at the inner side of the spring clamping sleeve is abutted and supported on the outer circumferential surface of the transmission shaft. The structure is more convenient to complete clamping operation and simple in structure. And through setting up the tight pad of clamp that flexible material (rubber) made for the area is bigger to the centre gripping of transmission shaft, presss from both sides tight pad and can avoid the transmission shaft outer periphery to suffer destruction better, and make the whole downward trend of motion that has of gear shaft when pressing from both sides tight, it can better butt on top.

As optimization, the mounting hole is integrally of a stepped hole structure and comprises a mounting hole large-diameter section at the upper end and a mounting hole small-diameter section at the lower end, a protective sleeve of a cylindrical structure is arranged in the mounting hole large-diameter section, and the upper end of the inner hole of the protective sleeve forms the matching hole section.

Preferably, an installation groove is formed in the inner side face of the tightening part, and the clamping pad is installed in the installation groove.

Like this, through set up the mounting groove in the portion inboard that tightens up, will press from both sides tight pad installation setting in the mounting groove, when the completion is pressed from both sides tightly, can avoid pressing from both sides tight pad better and slide for the portion that tightens up.

Preferably, the lower end of the mounting hole is provided with a butting block, and the middle part of the upper end face of the butting block protrudes upwards to form the tip.

Therefore, the structural design is more simple and more convenient for installation and setting of the center.

As optimization, a limiting cylinder is sleeved outside the tip, the lower end of the limiting cylinder is attached to the upper end face of the abutting block, a limiting groove is formed in the inner peripheral wall of the limiting cylinder in a measuring mode, and after the transmission shaft vertically extends into the limiting cylinder, keys in a key groove in the lower end of the transmission shaft can extend into the limiting groove in a matched mode.

Like this, through setting up spacing section of thick bamboo, the rotation of restriction gear shaft that can be better.

As optimization, the jacket seat also comprises a ring-shaped lower pressing plate at the upper end; the structure of pushing down includes that just be a plurality of holes of stepping down that evenly distributed along the circumferencial direction on the holding down plate, is equipped with the connecting rod at the downthehole connecting rod that steps down, and the connecting rod lower extreme is connected on the base, is equipped with down the nut on the connecting rod, and the nut that pushes down can the butt support press from both sides the cover seat and move down in order to promote on the holding down plate.

Therefore, when clamping is completed, the clamping sleeve seat is driven to move downwards by pressing the nut, the structure is simple, and clamping operation is conveniently completed.

Preferably, the lower end of the mounting seat is provided with a circle of annular fixed convex edge, and a plurality of connecting holes are uniformly formed in the fixed convex edge along the circumferential direction.

Therefore, the structure is simple, and the whole device is more convenient to install and fix on the machine tool workbench.

To sum up, the clamping device for gear shaft processing of above-mentioned structure presss from both sides tight pad through setting up the clamp that flexible material (rubber) made for the area of centre gripping to the transmission shaft is bigger, presss from both sides tight pad and can avoid the transmission shaft outer periphery to suffer destruction better, and make the gear shaft wholly have vertical decurrent trend of motion when pressing from both sides tightly, it can butt on top better, whole device has the clamping reliably and can avoid causing the destruction to the gear shaft by the clamping face better, can make things convenient for the characteristics of clamping operation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a position a in fig. 1.

Fig. 3 is a schematic structural view of the gear shaft in fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 3: a clamp device for processing a gear shaft comprises a base 1, wherein a vertical mounting hole 2 is formed in the base, a tip 3 is arranged at the bottom of the mounting hole, and a transmission shaft on a gear shaft 4 can extend into the mounting hole and enables the tip to abut against a central hole formed in the end face of the gear shaft; the upper end of the transmission shaft is sleeved with a jacket seat 5, the jacket seat comprises a spring jacket 6 at the lower end, the spring jacket is arranged with a small diameter at the lower end and a large diameter at the upper end, the upper end of the mounting hole is provided with a matching hole section with a large diameter at the upper end and a small diameter at the lower end, and the spring jacket vertically extends into the matching hole section; a plurality of elongated tightening openings 7 are uniformly distributed on the lower end surface of the spring jacket in the wall thickness direction and divide the spring jacket into a plurality of arc-shaped plate-shaped tightening parts; clamping pads 8 made of flexible materials are respectively attached to the inner sides of the tightening parts; a pressing structure is arranged between the jacket base and the base, and the pressing structure can drive the jacket base to move downwards and enable the spring jacket to be folded inwards to be clamped on the outer circumferential surface of the transmission shaft.

In this embodiment, the mounting hole wholly is the shoulder hole structure, including the mounting hole major diameter section of upper end and the mounting hole minor diameter section of lower extreme, is provided with cylindrical structure's protective sheath 9 in the mounting hole major diameter section, and protective sheath hole upper end forms the cooperation hole section.

In the specific embodiment, an installation groove is formed in the inner side surface of the tightening part, and the clamping pad is installed in the installation groove.

In the present embodiment, a contact block 10 is disposed at the lower end of the mounting hole, and the center of the upper end surface of the contact block protrudes upward to form the tip.

In the specific embodiment, the limiting cylinder 11 is sleeved outside the tip, the lower end of the limiting cylinder is connected to the upper end face of the abutting block in an abutting mode, the limiting groove is formed in the first side of the inner peripheral wall of the limiting cylinder, and after the transmission shaft vertically extends into the limiting cylinder, the key 12 in the key groove at the lower end of the transmission shaft can extend into the limiting groove in a matched mode.

In this embodiment, the jacket seat further includes a ring-shaped lower pressing plate 13 at the upper end; the structure of pushing down includes that just being a plurality of holes of stepping down that evenly distributed along the circumferencial direction on the holding down plate, is equipped with connecting rod 14 at the downthehole connecting rod that steps down, and the connecting rod lower extreme is connected on the base, is equipped with down nut 15 on the connecting rod, and down nut can the butt support in order to promote the jacket seat downstream on the holding down plate.

Therefore, when clamping is completed, the clamping sleeve seat is driven to move downwards by pressing the nut, the structure is simple, and clamping operation is conveniently completed. Specifically, the jacket base further comprises an upper end cylindrical section, and the upper end of the cylindrical section forms the lower pressing plate.

In the present embodiment, the lower end of the mounting seat has a ring-shaped fixing convex edge 16, and a plurality of connecting holes 17 are uniformly arranged on the fixing convex edge along the circumferential direction.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A clamp device for processing a gear shaft comprises a base, wherein a vertical mounting hole is formed in the base, a tip is arranged at the bottom of the mounting hole, a transmission shaft on the gear shaft can extend into the mounting hole, and the tip is enabled to abut against a central hole formed in the end face of the transmission shaft; the device is characterized in that a jacket seat is sleeved at the upper end of the transmission shaft and comprises a spring jacket at the lower end, the spring jacket is arranged with a smaller diameter at the lower end and a larger diameter at the upper end, and a matching hole section with a larger diameter at the upper end and a smaller diameter at the lower end is arranged at the upper end of the mounting hole and is used for the spring jacket to vertically extend into and match; a plurality of strip-shaped tightening ports are uniformly distributed on the lower end surface of the spring jacket in the wall thickness direction and divide the spring jacket into a plurality of arc-shaped plate-shaped tightening parts; clamping pads made of flexible materials are attached to the inner sides of the tightening parts respectively; a pressing structure is arranged between the jacket base and the base, and the pressing structure can drive the jacket base to move downwards and enable the spring jacket to be folded inwards to be clamped on the outer circumferential surface of the transmission shaft.

2. The jig device for gear shaft machining as claimed in claim 1, wherein: the whole stepped hole structure that is of mounting hole, including the big diameter section of mounting hole of upper end and the little diameter section of mounting hole of lower extreme, be provided with the protective sheath of cylindrical structure in the big diameter section of mounting hole, protective sheath hole upper end forms the cooperation hole section.

3. The jig device for gear shaft machining as claimed in claim 1, wherein: the inner side surface of the tightening part is provided with an installation groove, and the clamping pad is installed in the installation groove.

4. The jig device for gear shaft machining as claimed in claim 1, wherein: the lower end of the mounting hole is provided with a butting block, and the middle part of the upper end face of the butting block protrudes upwards to form the tip.

5. The jig device for gear shaft machining as claimed in claim 4, wherein: the limiting cylinder is sleeved outside the tip, the lower end of the limiting cylinder is attached to the upper end face of the abutting block, a limiting groove is formed in the inner peripheral wall of the limiting cylinder in a measuring mode, and after the transmission shaft vertically stretches into the limiting cylinder, the key in the key groove at the lower end of the transmission shaft can stretch into the limiting groove to be matched with the limiting groove.

6. The jig device for gear shaft machining as claimed in claim 1, wherein: the jacket seat also comprises a ring-shaped lower pressing plate at the upper end; the structure of pushing down includes that just be a plurality of holes of stepping down that evenly distributed along the circumferencial direction on the holding down plate, is equipped with the connecting rod at the downthehole connecting rod that steps down, and the connecting rod lower extreme is connected on the base, is equipped with down the nut on the connecting rod, and the nut that pushes down can the butt support press from both sides the cover seat and move down in order to promote on the holding down plate.

7. The jig device for gear shaft machining as claimed in claim 1, wherein: the lower end of the mounting seat is provided with a circle of annular fixed convex edge, and a plurality of connecting holes are uniformly formed in the fixed convex edge along the circumferential direction.