Tool clamp for machining inner circle

Abstract

The utility model relates to a work fixture for processing an inner circle, which comprises a fixture main body and an expansion clamp arranged at the front end part of the fixture main body, and an expansion clamp pull disc is arranged between the expansion clamp and the fixture main body; the expansion clamp consists of a metal expansion clamp and a bonding part; the metal expansion clamp and the bonding part are arranged in a mutually crossed manner to form an approximately trumpet-shaped structure; the metal expansion clamps are bonded together through the bonding parts; the bonding part is bonded by rubber; the tool clamp for machining the inner circle has the advantages that the applicability is wide, the expansion clamp is convenient to replace, and the connection tightness of the expansion clamp and the workpiece is high.

Description

Technical Field

[0001] The utility model relates to a tooling fixture for processing inner circles. Background Art

[0002] Many workpieces need to be processed with an inner circle. Most of these workpieces are also circular in shape, but there are also square or other shapes. The present application is mainly aimed at the tooling and fixtures used for processing the inner circle of workpieces with circular outer structure. When processing the inner circle of workpieces with this structure, the workpiece needs to be clamped and fixed from the outside. Many existing toolings are three-claw pneumatic or allow the workpiece to be fixed to the workpiece by bolts or the like. Not only is clamping inconvenient, but it cannot adapt to workpieces of various sizes and is not fixed tightly enough. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the prior art, thereby providing a tooling fixture for processing inner circles which has wide applicability, is convenient for replacing expansion clamps, and has high tightness of connection between the expansion clamps and the workpiece.

[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0005] The utility model discloses a tooling fixture for processing inner circles, comprising a fixture body, and an expansion clamp arranged at the front end of the fixture body, and an expansion clamp pulling plate is arranged between the expansion clamp and the fixture body; the expansion clamp is composed of a metal expansion clamp and a bonding part; the metal expansion clamp and the bonding part are arranged crosswise with each other to form a structure approximately in the shape of a trumpet; the metal expansion clamp is bonded together by the bonding part; the bonding part is rubber bonding.

[0006] Preferably, a pull rod is provided in the clamp body.

[0007] Preferably, a workpiece support plate is provided in the expansion clamp for supporting the workpiece A.

[0008] Preferably, three rotating mandrels are respectively provided on the fixture body, one end of the rotating mandrel is respectively provided with a gripper for gripping the workpiece A, and the other end is provided with a pulling plate.

[0009] Preferably, a butterfly spring is sleeved on the middle portion of the pull rod located inside the clamp body.

[0010] Preferably, a pull rod joint is provided on the end of the pull rod extending to the clamp body.

[0011] Preferably, a flange is provided at the rear end of the clamp body.

[0012] The beneficial effects of the utility model are:

[0013] An integral expansion clamp is formed by combining a metal expansion clamp and a bonding part, so that the overall diameter of the expansion clamp can be adjusted by changing the thickness of the bonding part, and the bonding part can give the expansion clamp a certain automatic tightening and loosening effect, so that the expansion clamp and the workpiece can be more closely connected; and the expansion clamp is detachably fixed by the expansion clamp pull plate, so that the expansion clamp can be conveniently replaced at any time according to workpieces of different sizes so that the tooling can continue to operate, thereby improving the applicability of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is an exploded schematic diagram of the utility model;

[0017] Figure 3 , 4 It is a partial exploded schematic diagram of the utility model;

[0018] Figure 5 It is a cross-sectional view of the utility model.

[0019] In the figure: 1-flange, 2-clamp body, 3-rotating mandrel, 4-grasp, 5-expansion clamp pull plate, 6-expansion clamp, 7-workpiece support plate, 8-pull plate, 9-butterfly spring, 10-pull rod joint, 11 pull rod, 6.1-metal expansion clamp, 6.2-bonding part, A-workpiece DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] like Figure 1As shown, a fixture for processing inner circles is mainly used for processing inner circles of workpieces. It includes a fixture body 2, and an expansion clamp 6 arranged at the front end of the fixture body 2, and an expansion clamp pull plate 5 is arranged between the expansion clamp 6 and the fixture body 2; further, the expansion clamp 6 is detachably arranged on the expansion clamp pull plate 5; the expansion clamp 6 is composed of a metal expansion clamp 6.1 and a bonding part 6.2; the metal expansion clamp 6.1 and the bonding part 6.2 are arranged crosswise to form a structure approximately in the shape of a trumpet; the metal expansion clamp 6.1 is bonded together by the bonding part 6.2; the bonding part 6.2 is rubber bonding; in this way, since the bonding part 6.2 has partial elasticity, the workpiece A will be more tightly inserted into the expansion clamp 6, and the thickness of the bonding part 6.2 can be adjusted according to the size of the workpiece A to change the overall diameter of the expansion clamp 6, that is, the same metal expansion clamp 6.1 with different bonding parts 6.2 can form expansion clamps 6 of multiple sizes.

[0022] A pull rod 11 is provided in the clamp body 2. Specifically, one end of the pull rod 11 is in the clamp body 2, and the other end extends into the expansion clamp pull plate 5. The expansion clamp pull plate 5 is connected to the clamp body 2 through the pull rod 11, so that the expansion clamp 6 is connected to the clamp body 2.

[0023] See also Figure 3 As shown, a workpiece support plate 7 is provided in the expansion clamp 6 for supporting the workpiece A.

[0024] See also Figure 2 and 4 As shown, three rotating spindles 3 are respectively arranged on the clamp body 2, and a grab clamp 4 is respectively arranged at one end of the rotating spindle 3 for grabbing the workpiece A, and a pulling plate 8 is arranged at the other end for fixing the three rotating spindles 3, so that the three rotating spindles 3 can have a pulling force on each other, which is more stable; specifically, the grab clamp 4 can be rotated at different angles through the rotating spindle 3, and when the workpiece A is installed, the grab clamp grabs the workpiece A from the outside to the inside from the end of the workpiece A, which can further make the workpiece A more stable.

[0025] See also Figure 5 As shown, the pull rod 11 is located in the middle of the clamp body 2 and is sleeved with a butterfly spring 9.

[0026] A tie rod joint 10 is provided on the end of the tie rod 11 extending to the clamp body 2 .

[0027] A flange 1 is provided at the rear end of the clamp body 2 .

[0028] The beneficial effects of the utility model are:

[0029] An integral expansion clamp is formed by combining a metal expansion clamp and a bonding part, so that the overall diameter of the expansion clamp can be adjusted by changing the thickness of the bonding part, and the bonding part can give the expansion clamp a certain automatic tightening and loosening effect, so that the expansion clamp and the workpiece can be more closely connected; and the expansion clamp is detachably fixed by the expansion clamp pull plate, so that the expansion clamp can be conveniently replaced at any time according to workpieces of different sizes so that the tooling can continue to operate, thereby improving the applicability of the tooling.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fixture for processing an inner circle, characterized in that: The invention comprises a clamp body (2), and an expansion clamp (6) arranged at the front end of the clamp body (2), and an expansion clamp pull plate (5) is arranged between the expansion clamp (6) and the clamp body (2); the expansion clamp (6) is composed of a metal expansion clamp (6.1) and a bonding portion (6.2); the metal expansion clamp (6.1) and the bonding portion (6.2) are arranged crosswise to form a structure approximately in the shape of a trumpet; the metal expansion clamp (6.1) is bonded together by the bonding portion (6.2); the bonding portion (6.2) is rubber bonded.

2. A fixture for processing inner circles according to claim 1, characterized in that: A pull rod (11) is arranged inside the clamp body (2).

3. A fixture for processing inner circle according to claim 2, characterized in that: A workpiece support plate (7) is arranged inside the expansion clamp (6) for supporting the workpiece A.

4. A fixture for processing inner circles according to claim 2, characterized in that: Three rotating mandrels (3) are respectively arranged on the clamp body (2), one end of the rotating mandrel (3) is respectively provided with a gripping clamp (4) for gripping the workpiece A, and the other end is provided with a pulling plate (8).

5. A fixture for processing inner circle according to claim 2, characterized in that: The pull rod (11) is located in the middle of the clamp body (2) and is sleeved with a butterfly spring (9).

6. A fixture for processing an inner circle according to claim 5, characterized in that: A pull rod joint (10) is provided on the end of the pull rod (11) extending to the clamp body (2).

7. A fixture for processing inner circles according to claim 1, characterized in that: A flange (1) is provided at the rear end of the clamp body (2).

Images