CN104999505A - Positioning and clamping tool - Google Patents

Abstract

The invention provides a positioning and clamping tool, comprising a rectangular frame (1), a clamping screw (2), an L-shaped step plate (3) and a bottom plate (4), wherein the frame body side of the rectangular frame (1) An L-shaped step plate (3) is provided on the inner wall, and a bottom plate (4) is provided on the remaining inner wall of the rectangular frame (1). The bottom plate (4) contacts the bottom of the part blank to support the part blank, and the L-shaped step plate (3) ) of the step vertical wall and the inner wall of the frame are respectively in contact with two mutually perpendicular sides on the horizontal plane of the blank of the part to realize the positioning of the blank of the part. The rectangular frame (1) is provided with a hole for the passage of the clamping screw (2). The end of the clamping screw (2) abuts against the other two sides of the part blank to realize the determination of the position of the part blank.

Description

A positioning and clamping tooling

technical field

The invention belongs to the technical field of tooling design, in particular to a positioning and clamping tooling.

Background technique

At present, the processing of domestic composite material parts production enterprises mostly relies on the traditional mechanical processing mode, using the high-speed rotation of the tool to remove the material allowance, so as to realize the processing processes such as edge trimming, drilling, and milling of parts.

The part blank of the composite material tensile test piece, the thick solid line in Figure 1 shows the composite material tensile test piece (six products) to be processed, and the shaded part shows the two reinforcing plate bosses of the part blank, the composite material There is a V-shaped groove in the middle of the tensile test piece to ensure that the sharp point of the V-shaped groove of the composite material tensile test piece is on the center line between the two reinforcement plate bosses, and the deviation shall not exceed ±0.2mm.

When using traditional methods to process tensile test pieces of composite materials, there is a problem of burrs. Processing with high-pressure water cutting equipment can solve this problem. However, due to the large deformation of the blank of the composite material tensile test piece, it is inconvenient to clamp when using high-pressure water cutting equipment, and it is easy to dislocate and fall off.

Contents of the invention

The technical problem to be solved in the present invention:

A special positioning and clamping tool for high-pressure water cutting equipment is designed to solve the problems of inconvenient clamping, misalignment and falling off when processing composite material parts with high-pressure water cutting equipment.

Technical scheme of the present invention:

A positioning and clamping tool, comprising a rectangular frame, clamping screws, and an L-shaped step plate and a bottom plate, wherein an L-shaped step plate is provided on one side of the inner wall of the rectangular frame, and the remaining inner walls of the rectangular frame are provided with The bottom plate, the bottom plate contacts with the bottom of the part blank to support the part blank, the step wall of the L-shaped step plate and the inner wall of the frame respectively contact with the two sides perpendicular to each other on the horizontal plane of the part blank to realize the positioning of the part blank, on the rectangular frame frame A hole is provided for the passage of the clamping screw, and the end of the clamping screw is pushed against the other two sides of the part blank to realize the determination of the position of the part blank.

Beneficial effects of the present invention:

The invention is used for positioning and clamping when high-pressure water cutting equipment processes composite material parts. Water generated during processing can flow away from through holes in the bottom plate and the bottom plate can effectively prevent back splashing of high-pressure water from damaging the back of the part. Clamping screws clamp the composite part within the long slots of the rectangular frame.

Description of drawings

Figure 1 is a schematic diagram of the part blank of the composite tensile test piece

Figure 2 is a schematic diagram of the present invention.

Detailed ways

The positioning and clamping tool includes a positioning and clamping tool, including a rectangular frame 1, a clamping screw 2, an L-shaped step plate 3 and a bottom plate 4, wherein an L-shaped step is provided on the inner wall of one side of the frame body of the rectangular frame 1 Plate 3, the remaining inner walls of the frame body of the rectangular frame 1 are provided with a bottom plate 4, the bottom plate 4 is in contact with the bottom of the part blank to support the part blank, and the step vertical wall of the L-shaped step plate 3 and the inner wall of the frame are respectively perpendicular to each other on the horizontal plane of the part blank The two sides of the part are in contact to realize the positioning of the part blank. The rectangular frame 1 has a hole for the clamping screw 2 to pass through. The end of the clamping screw 2 is on the other two sides of the part blank to realize the position of the part blank. ok.

The using method of the present invention is as follows:

1. Align and straighten the tooling and fix it on the table with a pressure plate;

2. Based on the inner edge of the reinforcing sheet of the blank of the part, trim the long side of the blank as the reference plane for machining the part, and fit it with the positioning surface of the tooling.

3. Clamp the part blank with five screws;

4. Check whether the positioning is accurate and whether the clamping force is sufficient;

5. Call the processing program;

6. Taking the apex of the groove as the origin of the processing coordinate system, check whether the apex of the groove is located on the center line of the two reinforcing sheets;

7. Drill holes at the starting point of each piece at low pressure (120MPa) (to prevent delamination during high-pressure cutting), and then cut at high pressure (280MPa);

8. After confirming that the part size meets the requirements, complete the processing.

Claims (1)

1. A positioning and clamping tool, including a rectangular frame (1), clamping screws (2), an L-shaped step plate (3) and a bottom plate (4), wherein, on the inner wall of one side of the rectangular frame (1) An L-shaped step plate (3) is provided, and a bottom plate (4) is provided on the remaining inner wall of the rectangular frame (1). The bottom plate (4) contacts the bottom of the part blank to support the part blank. The L-shaped step plate (3) The vertical wall of the step and the inner wall of the frame are respectively in contact with two mutually perpendicular sides on the horizontal plane of the blank of the part to realize the positioning of the blank of the part. The rectangular frame (1) has holes for the passage of the clamping screw (2) to pass through. The end of the screw (2) is pushed against the other two sides of the part blank to realize the determination of the position of the part blank.