CN216542713U

CN216542713U - Sleeve hole grinding fixture device

Info

Publication number: CN216542713U
Application number: CN202122749476.3U
Authority: CN
Inventors: 陈耀龙
Original assignee: Suzhou Chenna Automation Technology Co ltd
Current assignee: Suzhou Chenna Automation Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-17
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a sleeve inner hole grinding fixture device which comprises a precise bidirectional combined bearing, wherein a clamping ring A and a clamping ring B are respectively arranged on two sides of an inner ring of the precise bidirectional combined bearing; through the designed clamping jaws, the guide locking screw rod, the clamping ring A, the precise bidirectional combined bearing and the clamping ring B, when the clamping jaw type bidirectional combined bearing is used, the clamping jaw type bidirectional combined bearing can clamp a sleeve more stably during machining, a workpiece and the clamping jaws are driven to rotate together during machining, relative motion does not exist between the clamping jaws and the workpiece, therefore, abrasion cannot be generated, the workpiece can be clamped by large force, and the coaxiality of the inner hole and an outer circle during machining is guaranteed through the rotation of the precise bidirectional combined bearing.

Description

Sleeve hole grinding fixture device

Technical Field

The utility model belongs to the technical field of clamps, and particularly relates to a clamp device for grinding an inner hole of a sleeve.

Background

The main feature of the sleeve-like element is that it has an outer cylindrical surface and an inner cylindrical surface. When the surface of the outer cylinder is processed (boring or grinding), the two ends of the workpiece can be clamped by the tip, and the processing of each outer cylinder surface can be completed by one-time clamping. Thus, the coaxiality and concentricity of the respective outer cylindrical surfaces can be ensured. But when the inner cylindrical surface is processed, the center cannot be used for clamping. If only one end of the machine tool is clamped, the inner holes at the two ends of the workpiece are not coaxial due to the axial angle error of the chuck and the amplification effect of the length of the part at the other end. In order to reduce coaxiality errors, a center frame with clamping jaws is usually adopted at one end to be machined in the actual machining process, the clamping jaws of the center frame are adjusted to enable the outer circle of a workpiece to be concentric with a workpiece shaft, the clamping jaws are not moved in the machining process, and the problem that sliding or rolling friction exists between the clamping jaws and the surface of the outer circle of the workpiece is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sleeve inner hole grinding fixture device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a clamping device for grinding an inner hole of a sleeve comprises a precise bidirectional combined bearing, wherein a clamping ring A and a clamping ring B are respectively arranged on two sides of an inner ring of the precise bidirectional combined bearing, clamping jaws are respectively arranged on the clamping ring A and the clamping ring B, the inner side surfaces of one ends of the clamping jaws are arranged to be clamping surfaces, the directions of the clamping jaws correspond to the central axis position of the precise bidirectional combined bearing, one ends of the clamping jaws are provided with guide locking screws, and one ends of the guide locking screws are connected with the clamping ring A and the clamping ring B.

Preferably, the clamping ring A and the clamping ring B are both fixedly connected with an inner ring of the precise bidirectional combined bearing, and the clamping ring A and the clamping ring B are symmetrically arranged on two sides of the inner ring of the precise bidirectional combined bearing.

Preferably, the clamping jaws are fixed on the guide locking screw rod through threads, when two clamping jaws are arranged on the inner sides of the clamping rings A and B, the clamping surfaces on the inner sides of the clamping jaws are arranged to be V-shaped, and when three or four clamping jaws are arranged on the inner sides of the clamping rings A and B, the contact surfaces on the inner sides of the clamping jaws are arranged to be arc-shaped bulges.

Preferably, the outer ring of the precise bidirectional combination bearing is fixedly connected with a bearing fixing ring, and the lower end of the bearing fixing ring is provided with a base.

Preferably, be provided with the adjusting pad between base and the solid fixed ring of bearing, the both sides and base and the solid fixed ring fixed connection of bearing of adjusting pad.

Preferably, the workpiece is arranged on the inner side of the clamping jaw, and an elastic coupling is arranged between the workpiece and the workpiece shaft.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the designed clamping jaws, the guide locking screw rod, the clamping ring A, the precise bidirectional combined bearing and the clamping ring B, when the clamping jaw type bidirectional combined bearing is used, the clamping jaw type bidirectional combined bearing can clamp a sleeve more stably during machining, a workpiece and the clamping jaws are driven to rotate together during machining, relative motion does not exist between the clamping jaws and the workpiece, therefore, abrasion cannot be generated, the workpiece can be clamped by large force, and the coaxiality of the inner hole and an outer circle during machining is guaranteed through the rotation of the precise bidirectional combined bearing.

2. Through the elastic coupling of design, can be connected through elastic coupling between work piece and the work piece axle when using, further reduce the influence of the axiality error between work piece axle and the anchor clamps.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

in the figure: 1. a base; 2. an adjustment pad; 3. a bearing fixing ring; 4. a claw; 5. guiding the locking screw rod; 6. an elastic coupling; 7. a clamping ring A; 8. a precise bidirectional combined bearing; 9. and a clamping ring B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: a clamping device for grinding an inner hole of a sleeve comprises a precise bidirectional combined bearing 8, wherein a clamping ring A7 and a clamping ring B9 are respectively arranged on two sides of an inner ring of the precise bidirectional combined bearing 8, clamping jaws 4 are respectively arranged on the clamping ring A7 and the clamping ring B9, the inner side surfaces of one ends of the clamping jaws 4 are clamping surfaces, the directions of the clamping jaws 4 correspond to the central axis position of the precise bidirectional combined bearing 8, one ends of the clamping jaws 4 are provided with guide locking screws 5, one ends of the guide locking screws 5 are connected with the clamping rings A7 and the clamping rings B9, a workpiece is arranged on the inner sides of the clamping jaws 4, and an elastic coupling 6 is arranged between the workpiece and a workpiece shaft and passes through the elastic coupling.

As apparent from the above description, the present invention has the following advantageous effects: when the clamping device is used, the clamping is more stable when the sleeve is machined by the clamping jaws 4 on the clamping ring A7 and the clamping ring B9, a workpiece and the clamping jaws 4 are driven to rotate together during machining, relative motion does not exist between the clamping jaws 4 and the workpiece, so that abrasion is avoided, the workpiece can be clamped by large force, and the coaxiality of the workpiece and an excircle during machining of an inner hole is ensured by the rotation of the precise bidirectional combined bearing 8.

Further, referring to fig. 1, a clamping ring a7 and a clamping ring B9 are both fixedly connected to the inner ring of the precision bidirectional combination bearing 8, and a clamping ring a7 and a clamping ring B9 are symmetrically installed on both sides of the inner ring of the precision bidirectional combination bearing 8, so that the clamping ring a7 and the clamping ring B9 can rotate together with the inner ring of the precision bidirectional combination bearing 8 when in use.

Further, as shown in fig. 1, the jaws 4 are fixed on the guide locking screw rod 5 through threads, the jaws 4 can be conveniently disassembled, assembled and replaced when in use, when two jaws 4 are arranged on the inner sides of the clamping ring a7 and the clamping ring B9, the inner side clamping surface is replaced by the jaw 4 with the V-shaped clamping surface, the two jaws 4 can conveniently clamp a workpiece, when three or four jaws 4 are arranged on the inner sides of the clamping ring a7 and the clamping ring B9, the inner side contact surface is replaced by the jaw 4 with the arc-shaped protrusion, and therefore the mounting and clamping are carried out through the support of the three or four jaws 4.

Further, referring to fig. 1, the outer ring of the precise bidirectional combined bearing 8 is fixedly connected with a bearing fixing ring 3, the lower end of the bearing fixing ring 3 is provided with a base 1, an adjusting pad 2 is arranged between the base 1 and the bearing fixing ring 3, two sides of the adjusting pad 2 are fixedly connected with the base 1 and the bearing fixing ring 3, and the thickness of the base is adjusted through the adjusting pad 2, so that the center of the precise bidirectional combined bearing 8 and the center of the workpiece shaft are equal in height; by adjusting the horizontal position of the base 1, the axis of the bearing can be made coaxial with the axis of the workpiece shaft.

By adopting the elastic coupling 6, when in use, the workpiece and the workpiece shaft can be connected through the elastic coupling 6, so that the influence of coaxiality error between the workpiece shaft and the clamp is further reduced.

The working principle and the using process of the utility model are as follows: the core of the clamp is a radial and precise bidirectional combined bearing 8 with a central hole diameter larger than the outer diameter of a workpiece, the outer ring of the precise bidirectional combined bearing 8 is connected with a bearing fixing ring 3 and is fixedly connected with a base 1 through an adjusting pad 2, the base 1 is fixed on a machine tool according to the required position during processing, the position of the center height of the base 1 is adjusted by the base 1, the axial line of the precise bidirectional combined bearing 8 and the rotation center of a workpiece shaft can meet the coaxiality requirement of internal control of the workpiece, two sides of the inner ring of the precise bidirectional combined bearing 8 are respectively provided with a clamping ring A7 and a clamping ring B9, two clamping jaws 4 with V-shaped contact surfaces or three or four clamping jaws 4 in point contact are arranged on the clamping ring A7 and the clamping ring B9, the tail end of each clamping jaw 4 is connected with a linear driving guide locking screw rod 5, the axial line of each clamping jaw 4 is intersected with the axial line of the precise bidirectional combined bearing 8 in space, the jaws 4 are connected with a clamping ring A7 and a clamping ring B9 through a precise guide locking screw rod 5, the jaws 4 can be changed into different sizes, and the jaws can move linearly to clamp workpieces with different diameters; when a workpiece is clamped, the clamping jaw 4 is moved outwards by rotating the guide locking screw 5, the workpiece is inserted into the clamp, then the workpiece is clamped, the workpiece in the clamp is rotated, the runout of the outer circle of the workpiece is measured by using a displacement measuring instrument at two sides of the workpiece, and then the relative position of the clamping jaw 4 is adjusted until the runout of the outer circle of the workpiece is smaller than the coaxiality requirement of the inner hole of the workpiece; in order to further reduce the influence of coaxiality errors between the workpiece shaft and the clamp, the workpiece and the workpiece shaft are connected through an elastic coupling 6 capable of transmitting torque, for example, a corrugated pipe or other flexible connection is used for driving the workpiece and the clamping jaw 4 to rotate together, relative motion does not exist between the clamping jaw 4 and the workpiece, therefore, abrasion cannot be generated, the workpiece can be clamped through large force, and the coaxiality between the workpiece and an excircle during machining of an inner hole is guaranteed through rotation of the precise bidirectional combined bearing 8.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a sleeve hole grinding fixture device which characterized in that: the bearing comprises a precise bidirectional combined bearing (8), wherein a clamping ring A (7) and a clamping ring B (9) are respectively arranged on two sides of an inner ring of the precise bidirectional combined bearing (8), clamping jaws (4) are respectively arranged on the clamping ring A (7) and the clamping ring B (9), the inner side surfaces of one ends of the clamping jaws (4) are set to be clamping surfaces, the directions of the clamping jaws (4) correspond to the central axis positions of the precise bidirectional combined bearing (8), a guide locking screw rod (5) is arranged at one end of each clamping jaw (4), and one end of the guide locking screw rod (5) is connected with the clamping rings A (7) and the clamping rings B (9).

2. The bushing inner bore grinding fixture device of claim 1, wherein: and the clamping ring A (7) and the clamping ring B (9) are both fixedly connected with the inner ring of the precise bidirectional combined bearing (8), and the clamping ring A (7) and the clamping ring B (9) are symmetrically arranged on two sides of the inner ring of the precise bidirectional combined bearing (8).

3. The bushing inner bore grinding fixture device of claim 1, wherein: the clamping jaw (4) is fixed on the guide locking screw (5) through threads, and the inner side clamping surface of the clamping jaw (4) is arranged to be a V-shaped or arc-shaped bulge.

4. The bushing inner bore grinding fixture device of claim 1, wherein: the outer ring of the precise bidirectional combined bearing (8) is fixedly connected with a bearing fixing ring (3), and the lower end of the bearing fixing ring (3) is provided with a base (1).

5. The bushing inner bore grinding fixture device of claim 4, wherein: be provided with adjusting pad (2) between base (1) and the solid fixed ring of bearing (3), the both sides and base (1) and the solid fixed ring of bearing (3) fixed connection of adjusting pad (2).

6. The bushing inner bore grinding fixture device of claim 1, wherein: the inner side of the clamping jaw (4) is provided with a workpiece, and an elastic coupling (6) is arranged between the workpiece and the workpiece shaft.