Supporting clamp

Abstract

The utility model provides a supporting clamp which comprises a front support, a rear support, a sliding assembly and a base. The base is an arc-shaped base stand; the base is provided with a rear linear slideway and a front linear slideway along the diameter of a workpiece; the front support is in sliding connection with the front linear slideway through a sliding assembly; and the rear support is in sliding connection with the rear linear slideway through a sliding assembly. The centerless grinding and supporting device can be suitable for centerless grinding and supporting workpieces of high-precision bearing rings, is accurate in positioning, can ensure the size stability during high-speed grinding, and improves the machining efficiency at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing equipment, and particularly relates to a supporting fixture with a simple structure, convenient adjustment and high positioning accuracy. Background Art

[0002] The current common pivot points used in CNC grinding machines are characterized in that the pivot points are connected by a support body and the pivot points are fixed and immovable. There are three structural forms of the pivot points: bakelite, nylon and rolling elements. As we all know, if bakelite and nylon pivot points are used, a Marposs gauge needs to be used when used on ordinary CNC equipment, otherwise the dimensional accuracy cannot be guaranteed, because bakelite and nylon pivot points are easily worn. When the pivot points are worn, good supportability cannot be guaranteed, so the dimensional accuracy will be lost. The rolling element pivot points are easy to scratch the inner raceway or outer diameter of the bearing product, and the contact area during support is small, which does not conform to the arc of the support surface, and it is very easy to produce defective products during grinding. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a supporting fixture with a simple structure, convenient adjustment and high positioning accuracy, so as to solve the technical problems such as scratching the inner raceway and outer diameter, small support area and non-conformity with the arc of the support surface when supporting the grinding machine.

[0004] The technical solution adopted by the utility model to achieve the above purpose is: a supporting fixture, which includes a front support, a rear support, a sliding assembly and a base; the base is an arc-shaped seat; a rear linear slideway and a front linear slideway along the diameter of the workpiece are arranged on the base; the front support is slidably connected to the front linear slideway through a sliding assembly; the rear support is slidably connected to the rear linear slideway through a sliding assembly.

[0005] Further, the sliding assembly includes a bolt, a nut and a slider; connection parts are arranged on the front support and the rear support; the sliders are respectively placed in the front linear slideway and the rear linear slideway; one end of the bolt passes through the connection part and is threadedly connected to the slider; the other end of the bolt is matched with the nut.

[0006] Further, the rear support includes a rear support body, a rear support seat and a support head; one end of the rear support seat is hinged to the rear support body; the other end of the rear support seat is hinged to two support heads; the rear support seat is of a "U" - shaped structure.

[0007] Further, the connection part of the rear support is a transverse key groove; the transverse key groove is arranged on the rear support body; the transverse key groove is perpendicular to the rear linear slideway.

[0008] Further, there is at least one transverse key groove.

[0009] Further, there are at least two support heads of the rear support.

[0010] Furthermore, the front support includes a front support body and a support head; the front support body is hingedly connected to a support head; the connecting portion of the front support is a through hole; the through hole is arranged on the front support body; the position of the through hole corresponds to the position of the front linear slide.

[0011] Furthermore, there is at least one through hole.

[0012] The beneficial effects of the utility model are: the technical solution simplifies the support structure and also has the characteristics of convenient adjustment. It not only has good structural strength and good shock absorption performance, but also can be applied to the centerless grinding support workpiece of high-precision bearing rings, and has accurate positioning, and can ensure the stability of size during high-speed grinding, while also improving the processing efficiency. Therefore, the utility model has the characteristics of simple structure, convenient adjustment and high positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the rear support structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the front support structure of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the connection between the sliding assembly and the rear support of the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the sliding assembly of the utility model;

[0019] In the figure: 1, front support, 2, rear support, 3, sliding assembly, 4, base, 5, rear linear slide, 6, front linear slide, 7, bolt, 8, nut, 9, slider, 10, rear support body, 11, rear support seat, 12, support head, 13, transverse keyway, 14, front support body, 15, through hole, 16, workpiece. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0021] As shown in the figure, the utility model includes a front support 1, a rear support 2, a sliding assembly 3 and a base 4; the base 4 is an arc-shaped seat; a rear linear slideway 5 and a front linear slideway 6 along the diameter of the workpiece are arranged on the base 4; the front support 1 is slidably connected to the front linear slideway 6 through a sliding assembly 3; the rear support 2 is slidably connected to the rear linear slideway 5 through a sliding assembly 3.

[0022] Further, the sliding assembly 3 includes a bolt 7, a nut 8 and a slider 9; connecting parts are arranged on the front support 1 and the rear support 2; the sliders 9 are respectively placed in the front linear slideway 6 and the rear linear slideway 5; one end of the bolt 7 passes through the connecting part and is threadedly connected to the slider 9; the other end of the bolt 7 is matched with the nut 8.

[0023] Further, the rear support 2 includes a rear support body 10, a rear support seat 11 and a support head 12; one end of the rear support seat 11 is hinged to the rear support body 10; the other end of the rear support seat 11 is hinged to two support heads 12; the rear support seat 11 is of a "U" - shaped structure.

[0024] Further, the connecting part of the rear support 2 is a transverse keyway 13; the transverse keyway 13 is arranged on the rear support body 10; the transverse keyway 13 is perpendicular to the rear linear slideway 5.

[0025] It should be noted that in the prior art, the fulcrum moves back and forth in the diameter direction of the workpiece and cannot move up and down along the diameter arc direction. However, in this technical solution, two transverse keyways are arranged on the support body, enabling the fulcrum to move up and down along the diameter arc direction of the workpiece. In this way, it is convenient for us to finely adjust the included angle of the fulcrum, and can better improve the roundness and ellipticity of the product.

[0026] Further, there is at least one transverse keyway 13.

[0027] Further, there are at least two support heads 12 on the rear support 2.

[0028] Further, the front support 1 includes a front support body 14 and a support head 12; the front support body 14 is hinged to a support head 12; the connecting part of the front support 1 is a through - hole 15; the through - hole 15 is arranged on the front support body 14; the position of the through - hole 15 corresponds to the position of the front linear slideway 6.

[0029] It should be noted that the fulcrum of the rear support is four, and the fulcrum of the front support is two. All are composed of floating points connected by the support body, which can better filter out the fluctuations during the rotation of the workpiece.

[0030] Further, there is at least one through - hole 15.

[0031] It should be noted that the fulcrum is made of alloy material, and the contact surface is much larger than that of the rolling element, so as to ensure the stability of the contact surface. The curvature of the contact surface is cut according to the groove or outer diameter size of different products, and then ground with abrasive paste. After grinding, the curvature of the fulcrum is completely consistent with the curvature of the workpiece, so that the surface of the workpiece will not be scratched (especially for CNC grinders with material channels and robot loading and unloading).

[0032] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0033] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A supporting fixture, characterized in that: It includes a front support, a rear support, a sliding assembly and a base; the base is an arc-shaped seat; a rear linear slideway and a front linear slideway along the diameter of the workpiece are arranged on the base; the front support is slidably connected to the front linear slideway through a sliding assembly; the rear support is slidably connected to the rear linear slideway through a sliding assembly.

2. A support fixture according to claim 1, characterized in that: The sliding assembly includes a bolt, a nut and a slider; connection parts are arranged on the front support and the rear support; the sliders are respectively placed in the front linear slideway and the rear linear slideway; one end of the bolt passes through the connection part and is threadedly connected to the slider; the other end of the bolt is matched with the nut.

3. A support fixture according to claim 2, characterized in that: The rear support includes a rear support body, a rear support seat and a support head; one end of the rear support seat is hingedly connected to the rear support body; the other end of the rear support seat is hingedly connected to two support heads; the rear support seat is in a "U" - shaped structure.

4. A support fixture according to claim 3, characterized in that: The connection part of the rear support is a transverse keyway; the transverse keyway is arranged on the rear support body; the transverse keyway is perpendicular to the rear linear slideway.

5. A support fixture according to claim 4, characterized in that: There is at least one transverse keyway.

6. A supporting fixture according to any one of claims 2 to 5, characterized in that: The front support includes a front support body and a support head; the front support body is hingedly connected to a support head; the connection part of the front support is a through - hole; the through - hole is arranged on the front support body; the position of the through - hole corresponds to the position of the front linear slideway.

7. A support fixture according to claim 6, characterized in that: There is at least one through - hole.

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