Cutter for machining high-precision long hole of large special-shaped part
By designing the tool structure including the tool holder, nut, spring, friction plate, and locating pin, the problem of ensuring high precision in large irregular-shaped parts with long holes on CNC milling machines was solved, achieving efficient and high-precision machining.
Patent Information
- Application Number
- CN202520326864.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Large, irregularly shaped parts with high-precision long holes are difficult to ensure accuracy on CNC milling machines, and cannot be clamped and honed on deep hole honing machines.
A tool structure including a tool holder, nut, spring, friction plate and locating pin was designed, and high-precision machining is achieved by adjusting the elasticity of the spring and the tight contact of the friction plate.
It enables efficient machining of long holes with high precision on large irregular parts, meeting tolerance requirements, and features a simple structure and convenient operation.
Smart Images
Figure CN223811961U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of machining, especially relate to a cutter for processing high-precision long hole of large special-shaped part. BACKGROUND
[0002] The lock body is a large special-shaped part, which has a complex structure, a yield strength greater than 930MPa, and a hard material. It is difficult to process the φ86H9 hole with a length of 800mm, a roughness of 1.6, a cylindricity of 0.03, and high requirements for position degree. Since the shape structure is special-shaped and the hole is a blind hole, it cannot be clamped and honed on a deep hole honing machine, and the precision cannot be guaranteed by a numerical control milling machine. Therefore, for the high-precision long hole of a large special-shaped part, an urgent need exists for a cutter that can guarantee the precision. SUMMARY
[0003] The utility model wants to solve the technical problem that provide a cutter for processing high-precision long hole of large special-shaped part.
[0004] To solve the above technical problems, the specific technical scheme of the utility model is as follows:
[0005] A cutter for processing high-precision long hole of large special-shaped part, including handle 1, nut 2, spring 3, friction plate 4, positioning pin 5, handle 1 one end is connected with machine tool main shaft, the other end is cylindrical structure, the other end side face mills out two symmetrical planes, a plurality of threaded holes are arranged between the two planes, a nut 2 and two springs 3 are fixedly arranged in the threaded hole, a plurality of pin holes are further arranged on each plane, two friction plates 4 are arranged outside the two planes respectively, a positioning hole is opened on the friction plate, one end of the positioning pin 5 is fixed in the pin hole, and the other end can slide in the positioning hole, the spring 3 is in a compressed state, one end of the spring 3 is in contact with the nut 2, and the other end is in contact with the corresponding friction plate 4.
[0006] Preferably, the friction plate 4 is a cuboid plate structure.
[0007] Preferably, the number of threaded holes is two.
[0008] Preferably, the number of threaded holes is three.
[0009] Preferably, two pin holes are arranged on each plane.
[0010] The utility model has the advantages of simple structure, convenient operation, effective grinding of the special-shaped and long-depth inner hole to the tolerance allowable range, and popularization to the processing of the same type of high-precision special-shaped long hole. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is a schematic view of the handle structure.
[0012] Fig. 2 The assembled cutter structure schematic view. DETAILED DESCRIPTION
[0013] In order to better understand the purpose, structure and function of the utility model, the utility model will be described in further detail below with reference to the drawings.
[0014] As Figs. 1-2 shown, the utility model discloses a cutter for processing high-precision long hole of large special-shaped part, including handle 1, nut 2, spring 3, friction plate 4, positioning pin 5.
[0015] Handle 1 is used to be connected with machine tool spindle, is cylindrical structure, and the upper and lower ends are provided with threaded holes for passing through nut 2 and spring 3, and there are four pin holes for screwing in positioning pin 5 and connecting with friction plate 4.Friction plate 4 has two pieces, and is rectangular cuboid plate structure, and is provided with positioning hole on it for connecting with handle through positioning pin; spring 3 installed in the threaded hole of handle 1 adjusts the radius of friction plate 4 through its compression to adapt to different processing hole diameters.
[0016] Connection relationship: screw nut 2 and positioning pin 5 into the corresponding hole position in handle, and spring 3 is installed in the threaded hole on the handle, and friction plate 4 is connected with handle 1 through positioning pin 5 by compressing spring 3, and finally handle 1 is connected with spindle.
[0017] The use process of the cutter is as follows:
[0018] 1, first, the cutter is aligned through the machine tool spindle, and the processing center is found.
[0019] 2, according to whether the actual need is made to lengthen the cutter bar, if necessary, the cutter bar is installed on the spindle, and is tightly connected through the taper hole and the handle.
[0020] 3, manually assemble the grinding tool, manually compress the friction plate, and move it to the processing surface through the spindle.
[0021] 4, after releasing the hand, the spring is self-adapted and adjusted by elasticity, and interacts with the workpiece through elastic force, so that the friction plate is tightly attached to the processing surface.
[0022] 5, the spindle is driven to move and rotate by the machine tool control, and the high-precision special-shaped long hole is processed.
[0023] Although the embodiments of the utility model have been described in combination with the drawings, a number of modifications and improvements can be made by those skilled in the art without departing from the principle of the utility model, and these shall be regarded as belonging to the protection scope of the utility model.
Claims
1. A tool for machining a high-precision long hole of a large irregular shaped workpiece, characterized in that, It comprises a tool holder (1), a nut (2), a spring (3), a friction plate (4) and a positioning pin (5). One end of the tool holder (1) is connected with a main shaft of a machine tool, and the other end is in a cylindrical structure, and two symmetrical planes are milled on the side surface of the other end. A plurality of threaded holes are formed between the two planes, and a nut (2) and two springs (3) are fixedly arranged in the threaded holes. A plurality of pin holes are further arranged on each plane, two friction plates (4) are arranged outside the two planes respectively, a positioning hole is formed on the friction plate, one end of the positioning pin (5) is fixed in the pin hole, and the other end can slide in the positioning hole. The spring (3) is in a compressed state, one end of the spring (3) is in contact with the nut (2), and the other end is in contact with the corresponding friction plate (4).
2. The tool for machining a high-precision long hole of a large irregular shaped workpiece according to claim 1, characterized in that, The friction plate is in a cuboid plate structure.
3. The tool for machining high-precision long holes of large special-shaped pieces according to claim 2, characterized in that, The number of threaded holes is two.
4. The tool for machining a high-precision long hole of a large irregular shaped workpiece according to claim 2, characterized in that, The number of threaded holes is three.
5. The tool for machining a high-precision long hole of a large irregular shaped workpiece according to claim 1, characterized in that, Two pin holes are arranged on each plane.