Machining tool for special-shaped flange

Abstract

The utility model belongs to the field of flange assembly, and relates to a machining tool for a special-shaped flange. A machining tool for a special-shaped flange is characterized by comprising an L-shaped plate piece (1) and a reinforcing rib structure (4) arranged between a bottom plate (10) and a clamping plate (11) of the L-shaped plate piece (1), a pin hole (2) for positioning and a bolt hole (3) for clamping are formed in the clamping plate (11), and a pin (21) is arranged in the pin hole (2); and bolts (22) are arranged in the bolt holes (3). The tool has the beneficial effects that the tool is simple in structure and easy to machine, clamp and position, the clamping efficiency and precision of the special-shaped plate are improved, the stability of the tool is improved, and the detection precision and detection quality of the special-shaped plate are improved.

Description

Technical Field

[0001] The invention belongs to the field of flange assembly and relates to a processing tool for special-shaped flanges. Background Art

[0002] Special-shaped flange, one side of the end face has circular threaded holes and annular sealing grooves; the other side of the end face is an arc surface and curved chamfer, which requires high precision and complex processing technology.

[0003] In the prior art, the special-shaped flange workers use a CNC boring machine to place the side end surface of the sealing groove downward on the workbench when processing the curved surface, align it according to the cross-line reference, first process half of the curved surface finished product, then rotate the flange 180 degrees and align to process the other half of the curved surface finished product, finally use a right-angle milling head to process half of the curved chamfered finished product in the same way as the curved surface, and then process the other half of the curved chamfered finished product. During the processing, the CNC boring machine pressure plate interferes with the workpiece processing, and the curved surface of the special-shaped flange and the curved chamfer of the special-shaped flange need to be clamped multiple times to complete the processing, resulting in unstable processing accuracy and low production efficiency. Summary of the invention

[0004] The present invention aims to solve the problems of the processing tooling of the special-shaped flange in the prior art, such as complicated processing procedures, multiple clamping required to complete the processing of the arc surface of the special-shaped flange and the curved chamfer of the special-shaped flange, inaccurate positioning, unstable processing accuracy and low production efficiency. A processing tooling of the special-shaped flange is provided, which is characterized by comprising an L-shaped plate, a reinforcing rib structure arranged between the bottom plate of the L-shaped plate and a clamping plate, a pin hole for positioning and a bolt hole for clamping are arranged on the clamping plate, a pin is arranged in the pin hole; and a bolt is arranged in the bolt hole.

[0005] According to the processing tooling of the special-shaped flange described above, it is characterized in that the verticality between the base plate and the clamping plate of the L-shaped plate is less than 0.01mm, the flatness of the mounting surface of the base plate is less than 0.01mm, and the flatness of the mounting surface of the clamping plate is less than 0.01mm.

[0006] According to the processing tooling of the special-shaped flange described above, it is characterized in that the pin holes are blind holes, there are two pin holes, the diameter is 8mm-15mm, and the depth is 5mm-20mm.

[0007] According to the processing tool for the special-shaped flange described above, it is characterized in that the bolt hole is a through hole with a diameter of 8mm-15mm.

[0008] According to the processing tool for the special-shaped flange described above, it is characterized in that chamfer structures are provided at both ends of the pin.

[0009] According to the processing tooling of the special-shaped flange described above, it is characterized in that the line connecting the centers of the circles projected by the two pin holes on the clamping surface of the clamping plate is parallel to the bottom plate of the L-shaped plate.

[0010] According to the processing tooling of the special-shaped flange described above, it is characterized in that there is a clearance fit between the pin hole and the pin, and the clearance is less than 0.01 mm.

[0011] According to the processing tool for the special-shaped flange described above, it is characterized in that there are 2-4 reinforcing rib structures, which are arranged parallel to each other between the bottom plate and the clamping plate of the L-shaped plate.

[0012] According to the processing tool for the special-shaped flange described above, it is characterized in that the reinforcing rib structure is triangular.

[0013] According to the processing tool for the special-shaped flange described above, it is characterized in that there are four bolt holes.

[0014] The advantages of the present invention compared with the prior art are:

[0015] 1. The present invention sets an L-shaped plate, and sets pin holes and threaded holes between the bottom plate and the clamping plate of the L-shaped plate. Both ends of the pin hole are provided with chamfered structures. The tooling structure is simple and easy to process and clamp and position. The interference of the CNC boring machine pressure plate on the workpiece during processing is eliminated. The curved chamfer of the arc surface of the special-shaped flange and the special-shaped flange can be processed by clamping once, thereby improving the clamping and processing efficiency of the special-shaped plate.

[0016] 2. The present invention improves the clamping accuracy of the special-shaped plate by ensuring that the verticality between the base plate and the clamping plate of the L-shaped plate is less than 0.01 mm, the flatness of the mounting surface of the base plate is less than 0.01 mm, and the flatness of the mounting surface of the clamping plate is less than 0.01 mm.

[0017] 3. The present invention increases the stability of the tooling and improves the detection accuracy and quality of the special-shaped plate by providing the reinforcing rib structure 4 between the bottom plate 10 of the L-shaped plate 1 and the clamping plate 11. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the special-shaped flange structure.

[0019] Figure 2 This is a schematic diagram of the processing tooling structure of the special-shaped flange of the invention.

[0020] Figure 3 The figure is a schematic diagram of the arc surface processing tooling for the special-shaped flange of the invention.

[0021] Figure 4 The figure is a schematic diagram of the processing curve chamfering of the processing tooling of the special-shaped flange of the invention.

[0022] In the figure: 1: L-shaped plate; 2: pin hole; 3: bolt hole; 4: reinforcing rib structure; 10: bottom plate; 11: clamping plate; 21: pin; 22: bolt; 31: threaded hole; 32: sealing groove; 33: arc surface; 34: curved chamfer. DETAILED DESCRIPTION

[0023] Preferred embodiment 1

[0024] A processing tool for a special-shaped flange includes an L-shaped plate 1, a reinforcing rib structure 4 arranged between a bottom plate 10 of the L-shaped plate 1 and a clamping plate 11, the clamping plate 11 is provided with a pin hole 2 for positioning and a bolt hole 3 for clamping, the pin hole 2 is provided with a pin 21, and the bolt hole 3 is provided with a bolt 22.

[0025] The verticality between the base plate 10 and the clamping plate 11 of the L-shaped plate 1 is less than 0.01 mm, the flatness of the mounting surface of the base plate 10 is less than 0.01 mm, and the flatness of the mounting surface of the clamping plate 11 is less than 0.01 mm.

[0026] The pin holes 2 are blind holes. There are two pin holes 2 with a diameter of 10 mm and a depth of 15 mm.

[0027] The bolt hole 3 is a through hole with a diameter of 8mm-15mm.

[0028] Chamfered structures are provided at both ends of the pin 21 .

[0029] The line connecting the centers of the circles projected by the two pin holes 2 on the clamping surface of the clamping plate 11 is parallel to the bottom plate 10 of the L-shaped plate 1 .

[0030] There is a clearance fit between the pin hole 2 and the pin 21, and the clearance is less than 0.01 mm.

[0031] There are 2 to 4 reinforcing rib structures 4 , which are arranged parallel to each other between the bottom plate 10 and the clamping plate 11 of the L-shaped plate 1 .

[0032] There are four bolt holes 3.

[0033] The tooling design uses two pins 21 and threaded holes 31 for positioning, and four bolts 22 are connected to the threaded holes of the special-shaped flange through the four bolt holes of the L-shaped plate 1, which limits the movement freedom and rotation freedom of the special-shaped flange, thereby realizing the positioning and clamping function of the flange and solving the interference problem of the CNC boring machine pressure plate during processing; in order to facilitate observation during processing, the L-shaped plate 1 is placed on the right side of the 0 degree direction of the CNC boring machine worktable. After processing the arc surface 33 of the special-shaped flange, the worktable is rotated 90 degrees to process the curved chamfer 34 of the special-shaped flange. The arc surface 33 of the special-shaped flange and the curved chamfer 34 of the special-shaped flange can be processed by clamping once.

[0034] Preferred embodiment 2

[0035] A processing tool for a special-shaped flange includes an L-shaped plate 1, a reinforcing rib structure 4 arranged between a bottom plate 10 of the L-shaped plate 1 and a clamping plate 11, the clamping plate 11 is provided with a pin hole 2 for positioning and a bolt hole 3 for clamping, the pin hole 2 is provided with a pin 21, and the bolt hole 3 is provided with a bolt 22.

[0036] The verticality between the base plate 10 and the clamping plate 11 of the L-shaped plate 1 is less than 0.01 mm, the flatness of the mounting surface of the base plate 10 is less than 0.01 mm, and the flatness of the mounting surface of the clamping plate 11 is less than 0.01 mm.

[0037] The pin holes 2 are blind holes. There are two pin holes 2 with a diameter of 12 mm and a depth of 12 mm.

[0038] The bolt hole 3 is a through hole with a diameter of 10 mm.

[0039] Chamfered structures are provided at both ends of the pin 21 .

[0040] The line connecting the centers of the circles projected by the two pin holes 2 on the clamping surface of the clamping plate 11 is parallel to the bottom plate 10 of the L-shaped plate 1 .

[0041] There is a clearance fit between the pin hole 2 and the pin 21, and the clearance is less than 0.01 mm.

[0042] There are 2 to 4 reinforcing rib structures 4, which are arranged parallel to each other between the bottom plate 10 and the clamping plate 11 of the L-shaped plate 1. The reinforcing rib structure 4 is triangular.

[0043] There are four bolt holes 3.

[0044] The tooling design is positioned by two pins 21 and threaded holes 31, and four bolts 22 are connected to the threaded holes of the special-shaped flange through the four bolt holes of the L-shaped plate 1, which limits the freedom of movement and rotation of the special-shaped flange, thereby realizing the positioning and clamping of the flange and solving the interference problem of the CNC boring machine pressure plate during processing; in order to facilitate observation during processing, the L-shaped plate 1 is placed on the right side of the 0 degree direction of the CNC boring machine worktable. After processing the arc surface 33 of the special-shaped flange, the worktable is rotated 90 degrees to process the curved chamfer 34 of the special-shaped flange. The arc surface 33 of the special-shaped flange and the curved chamfer 34 of the special-shaped flange can be processed by clamping once. The design of the tooling has the advantages of low manufacturing cost, high positioning accuracy, simple operation, and high practicality. After the first piece is processed, there is no need to repeat alignment and set zero points for subsequent processing. The batch processing advantage is significant, and the production efficiency can be greatly improved.

Claims

1. A processing tool for a special-shaped flange, characterized in that: The invention comprises an L-shaped plate (1), a bottom plate (10) of the L-shaped plate (1) and a reinforcing rib structure (4) arranged between the clamping plate (11); a pin hole (2) for positioning and a bolt hole (3) for clamping are arranged on the clamping plate (11); a pin (21) is arranged in the pin hole (2); and a bolt (22) is arranged in the bolt hole (3).

2. The processing tool for the special-shaped flange according to claim 1, characterized in that: The verticality between the base plate (10) and the clamping plate (11) of the L-shaped plate (1) is less than 0.01 mm, the flatness of the mounting surface of the base plate (10) is less than 0.01 mm, and the flatness of the mounting surface of the clamping plate (11) is less than 0.01 mm.

3. The processing tool for the special-shaped flange according to claim 1 or 2, characterized in that: The pin holes (2) are blind holes, there are two pin holes (2), the diameter is 8mm-15mm, and the depth is 5mm-20mm.

4. The processing tool for the special-shaped flange according to claim 3 is characterized in that: The bolt hole (3) is a through hole with a diameter of 8mm-15mm.

5. The processing tool for the special-shaped flange according to claim 3, characterized in that: Chamfered structures are provided at both ends of the pin (21).

6. The processing tool for the special-shaped flange according to claim 5, characterized in that: The line connecting the centers of the circles projected by the two pin holes (2) on the clamping surface of the clamping plate (11) is parallel to the bottom plate (10) of the L-shaped plate (1).

7. The processing tool for the special-shaped flange according to claim 6, characterized in that: There is a clearance fit between the pin hole (2) and the pin (21), and the clearance is less than 0.01 mm.

8. The processing tool for the special-shaped flange according to claim 7, characterized in that: There are 2 to 4 reinforcing rib structures (4), which are arranged parallel to each other between the bottom plate (10) and the clamping plate (11) of the L-shaped plate (1).

9. The processing tool for the special-shaped flange according to claim 8, characterized in that: The reinforcing rib structure (4) is in the shape of a triangle.

10. The processing tool for the special-shaped flange according to claim 8 or 9, characterized in that: There are four bolt holes (3).

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