Multi-point special-shaped fixing clamp

Abstract

The utility model provides a multi-point special-shaped fixing clamp, and belongs to the technical field of clamps. The multi-point special-shaped fixing clamp comprises a base. Three first conical positioning pins are installed at the two ends of the upper surface of the base in total, the three first conical positioning pins form a triangular positioning shape, adjustable movable bolts are further installed on the upper surfaces of the two ends of the base, and abutting pieces are further installed on the two sides of the base. A special-shaped workpiece is located on the three first conical positioning pins and tightly abuts against the tightly-abutting piece, a first pressing piece and a second pressing piece are further installed at the two ends of the base, and the first pressing piece and the second pressing piece tightly press the special-shaped workpiece. Through cooperation of the three first conical positioning pins, the four abutting pieces, the first pressing piece and the second pressing piece, multi-point clamping of the special-shaped workpiece is achieved, the special-shaped workpiece is more stable in the machining process, and therefore gravity pin cutting can be achieved, and the machining efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of clamps, and in particular to a multi-point special-shaped fixing clamp. Background Art

[0002] The device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position to accept construction or inspection is also called a fixture. In a broad sense, any device used to quickly, conveniently and safely install the clamped workpiece in any process of the process can be called a fixture. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common and are often referred to as fixtures. When processing the clamped workpiece on the machine tool, in order to make the surface of the clamped workpiece meet the technical requirements such as size, geometry and relative position accuracy with other surfaces specified in the drawing, the clamped workpiece must be positioned and clamped before processing or inspection.

[0003] It is relatively easy to clamp regular workpieces during processing, but it is difficult to position special-shaped workpieces (such as high-temperature alloy turbine blades), and more blade areas are occupied after clamping, so the stability of special-shaped workpieces is poor, which in turn affects the processing accuracy of special-shaped workpieces. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a multi-point special-shaped fixing clamp, which aims to improve the problem that it is difficult to position and occupies more blade area after clamping, resulting in poor stabilization effect of special-shaped workpieces, thereby affecting the accuracy of special-shaped workpiece processing.

[0005] An embodiment of the present application provides a multi-point special-shaped fixing fixture, including a base.

[0006] A total of three first conical positioning pins are installed at both ends of the upper surface of the base, and the three first conical positioning pins form a triangular positioning shape. Adjustable movable bolts are also installed on the upper surfaces of both ends of the base. Tightening parts are also installed on both sides of the base. The special-shaped workpiece is located on the three first conical positioning pins and is tightly pressed by the tightening parts. A first clamping part and a second clamping part are also installed at both ends of the base, and the first clamping part and the second clamping part clamp the special-shaped workpiece.

[0007] In a specific embodiment, the first clamping member includes a first screw rod, the bottom ends of the two first screw rods are rotatably connected to the bases on both sides of the special-shaped workpiece, a first clamping plate is commonly screwed on the two first screw rods, and the first clamping plate clamps the top of the special-shaped workpiece.

[0008] In a specific embodiment, a groove matching with the top of the special-shaped workpiece is formed on the lower surface of the first pressing plate.

[0009] In a specific embodiment, the second clamping member includes a second screw rod, the bottom end of which is rotatably connected to one end of the base, a second clamping plate is threadedly provided on the second screw rod, and the second clamping plate clamps the top of the side of the special-shaped workpiece.

[0010] In a specific embodiment, a guide rod is movably passed through the second pressing plate, and the bottom end of the guide rod is fixedly connected to the base.

[0011] In a specific implementation manner, at least four abutting members are provided, and the four abutting members abut against two ends of both sides of the special-shaped workpiece respectively.

[0012] In a specific embodiment, the four abutting members each include a bracket and a second conical locating pin, the four brackets are respectively installed at both ends of both sides of the base, and the four second conical locating pins are respectively screwed through the four brackets and abut against both sides of the special-shaped workpiece.

[0013] In a specific implementation manner, at least four movable bolts are provided, and the four movable bolts are respectively provided at two ends of the base.

[0014] Beneficial effects:

[0015] 1. Through the cooperation of three first tapered positioning pins, four abutment members, a first clamping member and a second clamping member, multi-point clamping of special-shaped workpieces is achieved, making the special-shaped workpieces more stable during processing, thereby achieving gravity cutting and improving processing efficiency.

[0016] 2. Through the setting of four movable bolts, it can be adjusted to fit the parts according to the actual situation of the special-shaped workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a multi-point special-shaped fixing fixture provided in an embodiment of the present application when clamping a special-shaped workpiece;

[0019] Figure 2 A schematic diagram of the structure of a multi-point special-shaped fixing fixture provided in an embodiment of the present application from a first perspective;

[0020] Figure 3This is a schematic diagram of the second viewing angle structure of the multi-point special-shaped fixing clamp provided in an embodiment of the present application.

[0021] In the figure: 1-base; 3-first conical positioning pin; 4-movable bolt; 5-tightening member; 51-bracket; 52-second conical positioning pin; 6-first clamping member; 61-first screw rod; 62-first clamping plate; 7-second clamping member; 71-second screw rod; 72-second clamping plate; 73-guide rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] See also Figure 1-Figure 3 The present application provides a multi-point special-shaped fixing fixture, including a base 1.

[0024] See also Figure 1 , Figure 2 and Figure 3 Three first conical positioning pins 3 are installed at both ends of the upper surface of the base 1, and the three first conical positioning pins 3 form a triangular positioning shape. Adjustable movable bolts 4 are also installed on the upper surfaces of both ends of the base 1. Tightening members 5 are also installed on both sides of the base 1. The special-shaped workpiece is located on the three first conical positioning pins 3 and is tightly pressed by the tightening members 5. The first pressing member 6 and the second pressing member 7 are also installed at both ends of the base 1, and the first pressing member 6 and the second pressing member 7 press the special-shaped workpiece. At least four movable bolts 4 are provided, and the four movable bolts 4 are respectively provided at both ends of the base 1. When clamping and positioning the special-shaped workpiece, first align the special-shaped workpiece with the three first conical positioning pins 3 so that it is located on the three first conical positioning pins 3 to ensure the required horizontal position, and then adjust the four abutment members 5 on both sides so that the four abutment members 5 can be tightly pressed against the two sides of the special-shaped workpiece so that the points on the special-shaped workpiece can effectively fit the required position, and then adjust the first clamping member 6 and the second clamping member 7 respectively so that the top of the special-shaped workpiece can be clamped and positioned, thereby achieving the positioning and clamping of the special-shaped workpiece. Through the cooperation of the three first conical positioning pins 3, the four abutment members 5, the first clamping member 6, and the second clamping member 7, multi-point clamping of the special-shaped workpiece is achieved, making the special-shaped workpiece more stable during processing, thereby achieving gravity cutting and improving processing efficiency. Through the provision of four movable bolts 4, it can be adjusted to fit the part according to the actual situation of the special-shaped workpiece.

[0025] In this embodiment, the first clamping member 6 includes a first screw rod 61, the bottom ends of the two first screw rods 61 are rotatably connected to the base 1 on both sides of the special-shaped workpiece, and the two first screw rods 61 are commonly screwed with a first clamping plate 62, and the first clamping plate 62 clamps the top of the special-shaped workpiece. The lower surface of the first clamping plate 62 is provided with a slot that matches the top of the special-shaped workpiece. The second clamping member 7 includes a second screw rod 71, the bottom end of the second screw rod 71 is rotatably connected to one end of the base 1, and the second clamping plate 72 is screwed with the second screw rod 71, and the second clamping plate 72 clamps the top of the side of the special-shaped workpiece. A guide rod 73 is also movably passed through the second clamping plate 72, and the bottom end of the guide rod 73 is fixedly connected to the base 1. Among them, when the special-shaped workpiece is located on the three first conical positioning pins 3, the first screw 61 is rotated in sequence so that the first clamping plate 62 is pressed on the top of the special-shaped workpiece, and the second screw 71 is rotated so that the second clamping plate 72 presses the top of the side of the special-shaped workpiece to achieve positioning and clamping of the special-shaped workpiece.

[0026] In this embodiment, at least four abutting members 5 are provided, and the four abutting members 5 are respectively abutted against the two ends of the two sides of the special-shaped workpiece. The four abutting members 5 each include a bracket 51 and a second conical positioning pin 52. The four brackets 51 are respectively installed at the two ends of the two sides of the base 1. The four second conical positioning pins 52 are respectively screwed through the four brackets 51 and abut against the two sides of the special-shaped workpiece. When the special-shaped workpiece is pressed, the four second conical positioning pins 52 are respectively rotated to realize the positioning of the two sides of the special-shaped workpiece to prevent deviation.

[0027] Working principle of the multi-point special-shaped fixing fixture:

[0028] When clamping and positioning a special-shaped workpiece, first align the special-shaped workpiece with the three first conical positioning pins 3 so that it is located on the three first conical positioning pins 3 to ensure the required horizontal position, and then adjust the four abutting members 5 on both sides so that the four abutting members 5 can be tightly pressed against the two sides of the special-shaped workpiece so that the points on the special-shaped workpiece can effectively fit the required position, and then adjust the first clamping member 6 and the second clamping member 7 respectively so that the top of the special-shaped workpiece can be clamped and positioned, thereby achieving the positioning and clamping of the special-shaped workpiece. Through the cooperation of the three first conical positioning pins 3, the four abutting members 5, the first clamping member 6, and the second clamping member 7, multi-point clamping of the special-shaped workpiece is achieved, making the special-shaped workpiece more stable during processing, thereby achieving gravity cutting and improving processing efficiency. Through the provision of four movable bolts 4, it can be adjusted to fit the part according to the actual situation of the special-shaped workpiece.

[0029] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A multi-point special-shaped fixing fixture, characterized in that: include A base (1), three first conical positioning pins (3) are installed at both ends of the upper surface of the base (1), and the three first conical positioning pins (3) form a triangular positioning shape, and adjustable movable bolts (4) are also installed on the upper surfaces of both ends of the base (1), and tight-fitting parts (5) are also installed on both sides of the base (1), and the special-shaped workpiece is located on the three first conical positioning pins (3) and is tightly pressed by the tight-fitting parts (5), and a first clamping part (6) and a second clamping part (7) are also installed at both ends of the base (1), and the first clamping part (6) and the second clamping part (7) clamp the special-shaped workpiece.

2. A multi-point special-shaped fixing fixture according to claim 1, characterized in that: The first clamping member (6) comprises a first screw rod (61), the bottom ends of the two first screw rods (61) are rotatably connected to the base (1) on both sides of the special-shaped workpiece, and a first clamping plate (62) is screwed together on the two first screw rods (61), and the first clamping plate (62) clamps the top of the special-shaped workpiece.

3. A multi-point special-shaped fixing fixture according to claim 2, characterized in that: The lower surface of the first pressing plate (62) is provided with a clamping groove which matches the top of the special-shaped workpiece.

4. A multi-point special-shaped fixing fixture according to claim 1, characterized in that: The second pressing member (7) comprises a second screw rod (71), the bottom end of the second screw rod (71) is rotatably connected to one end of the base (1), a second pressing plate (72) is screwed onto the second screw rod (71), and the second pressing plate (72) presses the top of the side of the special-shaped workpiece.

5. A multi-point special-shaped fixing fixture according to claim 4, characterized in that: A guide rod (73) is movably passed through the second pressing plate (72), and the bottom end of the guide rod (73) is fixedly connected to the base (1).

6. The multi-point special-shaped fixing fixture according to claim 1, characterized in that: At least four of the abutting members (5) are provided, and the four abutting members (5) are respectively abutted against two ends of both sides of the special-shaped workpiece.

7. A multi-point special-shaped fixing fixture according to claim 6, characterized in that: The four abutting members (5) each comprise a bracket (51) and a second conical positioning pin (52); the four brackets (51) are respectively mounted on both ends of both sides of the base (1); and the four second conical positioning pins (52) are respectively screwed through the four brackets (51) and abut against both sides of the special-shaped workpiece.

8. The multi-point special-shaped fixing fixture according to claim 1, characterized in that: At least four movable bolts (4) are provided, and the four movable bolts (4) are respectively provided at two ends of the base (1).

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