Irregular workpiece machining clamp

Abstract

The utility model relates to an irregular workpiece machining clamp which comprises a base, a curved surface positioning piece, a side wall positioning piece and a top surface positioning piece, and the curved surface positioning piece, the side wall positioning piece and the top surface positioning piece are located on the base. A plurality of positioning pins are vertically arranged on the base; the curved surface positioning piece comprises a first positioning rod, a first connecting piece and a curved surface clamping piece; the side wall positioning piece comprises a second positioning rod and a second connecting piece; the top face positioning piece comprises a pressing plate, a third positioning rod, a third connecting piece and a buffering cushion. The clamping device has the advantages that the structure is simple, the use cost is low, according to the structural characteristics of a plane outer wall and a curved surface outer wall, all positions of an irregular workpiece are firmly clamped on the base through different positioning pieces, the positioning and clamping capacity of the irregular workpiece is improved, and follow-up machining is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal workpiece processing technical field, especially a kind of irregular workpiece processing fixture. BACKGROUND

[0002] When processing irregular workpiece, in order to the accuracy of processing, workpiece needs to be clamped. Since there are both curved outer wall and plane outer wall on workpiece, the existing clamping structure by positioning rod point opposite surface is prone to slip, causing workpiece to be offset during processing, affecting processing quality, even workpiece flies out, causing safety accident.

[0003] Therefore, it is necessary to further improve the structure of existing clamp for the positioning needs of irregular workpiece to improve clamping effect. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of irregular workpiece processing fixture, can improve the clamping effect to irregular outer wall.

[0005] To achieve the above-mentioned utility model purposes, the utility model provides a kind of irregular workpiece processing fixture, including base, curved surface positioning piece, side wall positioning piece and top surface positioning piece, the curved surface positioning piece, the side wall positioning piece and the top surface positioning piece are located on the base;

[0006] The base is vertically provided with a plurality of positioning pins;

[0007] The curved surface positioning piece includes first positioning rod, first connecting piece and curved surface clamping piece, the first positioning rod is threadedly connected with the first connecting piece, and the curved surface clamping piece is located at the end of the first positioning rod;

[0008] The side wall positioning piece includes second positioning rod and second connecting piece, and the second connecting piece is threadedly connected with the second positioning rod;

[0009] The top surface positioning piece includes pressing plate, third positioning rod, third connecting piece and buffer pad, the pressing plate is connected vertically on the third connecting piece, the buffer pad is located between the pressing plate and the third connecting piece, and the third positioning rod passes through the pressing plate and is threadedly connected with the base.

[0010] Preferably, the first positioning rod, the second positioning rod and the third positioning rod are all butterfly-shaped screws.

[0011] As a further improvement of the utility model, the curved surface clamping piece is a rubber clamping piece.

[0012] As a further improvement of the utility model, the end of the second positioning rod is provided with a rubber clamping block.

[0013] As a further improvement of the utility model, the base is provided with a connecting groove, the bottom of the third connecting piece is provided with a connecting shaft, and the connecting shaft is located in the connecting groove.

[0014] Further, the bottom of the pressing plate is provided with a rubber pad.

[0015] The irregular workpiece machining clamp of the utility model inserts the self-provided hole or groove of the irregular workpiece on the positioning pins in the corresponding positions, rotates the first positioning rod, and abuts the curved surface clamping piece connected with the first positioning rod against the curved surface outer wall of the workpiece.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] The structure is simple, the use cost is low, the different positioning pieces are used according to the structural characteristics of the plane outer wall and the curved surface outer wall, the irregular workpiece is clamped on the base at all positions, the positioning and clamping capacity for the irregular workpiece is improved, and subsequent machining is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model relates to an irregular workpiece machining clamp structure schematic diagram.

[0019] Figure 2 The utility model relates to an irregular workpiece machining clamp structure schematic diagram.

[0020] Figure 3 It is top surface positioning piece structure schematic diagram. CONCRETE IMPLEMENTING METHOD

[0021] The specific implementing method of the utility model is further explained in detail in combination with the drawings.

[0022] As Figure 1-2 shown, the utility model relates to an irregular workpiece machining clamp, which comprises a base 1, curved surface positioning pieces 2, side wall positioning pieces 3 and top surface positioning pieces 4, and the curved surface positioning pieces 2, the side wall positioning pieces 3 and the top surface positioning pieces 4 are located on the base 1.

[0023] The base 1 is vertically provided with a plurality of positioning pins 11.

[0024] The curved surface positioning member 2 includes a first positioning rod 21, a first connecting member 22, and a curved surface clamping member 23. The first positioning rod 21 is threadedly connected to the first connecting member 22. The curved surface clamping member 23 is located at the end of the first positioning rod 21.

[0025] The side wall positioning member 3 includes a second positioning rod 31 and a second connecting member 32, and the second connecting member 32 is threadedly connected to the second positioning rod 31;

[0026] like Figure 3 As shown, the top surface positioning member 4 includes a pressure plate 41, a third positioning rod 42, a third connecting member 43, and a buffer pad 44. The pressure plate 41 is vertically connected to the third connecting member 43. The buffer pad 44 is located between the pressure plate 41 and the third connecting member 43. The third positioning rod 42 passes through the pressure plate 41 and is threadedly connected to the base 1.

[0027] The present invention provides an irregular workpiece processing fixture, which inserts the self-contained holes or grooves of the irregular workpiece 5 into the positioning pins 11 at each corresponding position, rotates the first positioning rod 21, and presses the curved clamping piece 23 connected thereto against the curved outer wall of the workpiece 5. Compared with the flat clamping piece, the arc surface of the curved clamping piece 23 can fit the curved outer wall of the workpiece 5 to prevent the curved outer wall of the workpiece 5 from slipping and affecting the positioning effect; rotates the second positioning rod 31 and presses it against the flat outer wall of the workpiece 5; rotates the third positioning rod 42, and presses the pressure plate 41 downward on the top surface of the workpiece 5, wherein the buffer pad 44 provides a downward pressure buffer space to ensure that the pressure plate 41 remains horizontal after being pressed down, to avoid one end being pressed down and the other end being lifted up, which affects the positioning effect.

[0028] The first positioning rod 21 , the second positioning rod 31 , and the third positioning rod 42 are all butterfly screws, which are convenient for manual operation.

[0029] The curved clamp 23 is a rubber clamp. Conventional point-to-point clamping structures are prone to slipping on the curved outer wall. The rubber clamp can fit the curved outer wall to enhance the clamping strength and prevent the outer wall or paint surface of the workpiece 5 from being scratched after the clamp is too tight.

[0030] A rubber clamping block 33 is provided at the end of the second positioning rod 31. The rubber clamping block 33 directly contacts the planar outer wall of the workpiece 5 instead of the second positioning rod 31. The rubber clamping block 33 and the planar outer wall of the workpiece 5 adopt a point-to-face clamping structure to strengthen the pressure on the planar outer wall, so that the second positioning rod 31 clamps the planar outer wall. The rubber material of the rubber clamping block 33 can reduce the wear on the outer wall of the workpiece 5 and play a protective role.

[0031] The base 1 is provided with a connecting groove 12, the bottom of the third connecting piece 43 is provided with a connecting shaft 45, and the connecting shaft 45 is located in the connecting groove 12. When the workpiece 5 is placed downward, the third positioning rod 42 is first rotated to be separated from the threaded hole of the base 1, the third connecting piece 43 is rotated, the connecting shaft 45 is rotated in the connecting groove 12, the pressing plate 41 is moved away, a space for placing the workpiece 5 is provided, after the workpiece 5 is inserted on the positioning pin 11, the pressing plate 41 is reset through the connecting shaft 45, then the third positioning rod 42 is aligned with the threaded hole of the base 1 and is rotated, and the pressing plate 41 is pressed downward through the third positioning rod 42. The connecting structure that the top surface positioning piece 4 is connected with the base 1 through the connecting shaft 45 is convenient for disassembling the top surface positioning piece 4 and is convenient for vertically taking and loading materials.

[0032] The bottom of the pressing plate 41 is provided with a rubber pad 46, the workpiece top surface can be protected, and the pressing plate 41 is prevented from being pressed too much and scratching the workpiece surface.

[0033] The preferred embodiments of the utility model have been specifically described above, but the utility model is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A fixture for processing irregular workpieces, characterized in that: It comprises a base, a curved surface positioning piece, a side wall positioning piece, and a top surface positioning piece, wherein the curved surface positioning piece, the side wall positioning piece, and the top surface positioning piece are located on the base; The base is vertically provided with a plurality of positioning pins; The curved surface positioning member includes a first positioning rod, a first connecting member, and a curved surface clamping member, wherein the first positioning rod is threadedly connected to the first connecting member, and the curved surface clamping member is located at an end of the first positioning rod; The side wall positioning member includes a second positioning rod and a second connecting member, and the second connecting member is threadedly connected to the second positioning rod; The top surface positioning member includes a pressure plate, a third positioning rod, a third connecting member, and a buffer pad. The pressure plate is vertically connected to the third connecting member. The buffer pad is located between the pressure plate and the third connecting member. The third positioning rod passes through the pressure plate and is threadedly connected to the base.

2. The irregular workpiece processing fixture according to claim 1, characterized in that: The first positioning rod, the second positioning rod, and the third positioning rod are all butterfly screws.

3. The irregular workpiece processing fixture according to claim 1, characterized in that: The curved surface clamping piece is a rubber clamping piece.

4. The irregular workpiece processing fixture according to claim 1, characterized in that: The end of the second positioning rod is provided with a rubber clamping block.

5. The irregular workpiece processing fixture according to claim 1, characterized in that: The base is provided with a connecting groove, and the bottom of the third connecting member is provided with a connecting shaft, and the connecting shaft is located in the connecting groove.

6. The irregular workpiece processing fixture according to claim 1 or 5, characterized in that: A rubber pad is provided on the bottom of the pressing plate.

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