A hole processing tool

Abstract

The utility model relates to a hole processing tool, including an extension rod, the extension rod is used to connect with the main shaft of a machine tool; a processing part, the processing part is detachably connected to one end of the extension rod, and includes a connected tool handle and a tool head; the tool head has blades spirally distributed along its axis; the end of the tool head away from the tool handle is a planar structure; and a positioning part, the positioning part is concentrically connected to the tool head, and a positioning tip is provided at the center of the end away from the tool head; the outer diameter of the positioning part is smaller than the outer diameter of the tool head. The processing tool is provided with an extension rod, a processing part and a positioning part, and can extend the extension rod into the wiring hole, and then assemble the processing part to perform milling processing on the connecting hole inside the workpiece. Compared with the EDM electric spark processing method, there is no need to customize special copper electrodes, which reduces production costs, significantly improves processing efficiency, and increases production capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to an in-hole machining tool. Background Art

[0002] like Figure 1 As shown, the workpiece has two adjacent large holes 1 of D32.0, and a connecting hole 2 of D16.0 is connected between the two large holes along the radial direction. The large hole is connected to a wiring hole 3 of D10.0 outside the workpiece wall away from the other large hole. Since the wiring hole and the connecting hole are concentrically arranged, in the existing processing method, a drill is first used to process the wiring hole, and then the EDM discharge method is used. One end of a special copper electrode is passed through the wiring hole, and the other end is connected to the electrode fixture of the EDM equipment to complete the processing in the hole. Although this method can complete the processing in the hole, it needs to be soaked in a specific solution for processing, and the corresponding copper electrode needs to be customized, which has high processing costs; and the production capacity through this method is only 1pcs / 6H, which cannot meet the customer's delivery time. Therefore, it is necessary to develop a tool that can perform rapid processing in the hole to solve the above problems. Utility Model Content

[0003] Based on this, the utility model provides a hole processing tool to solve the above problems.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A hole processing tool, comprising:

[0006] An extension rod, the extension rod is used to connect with the main shaft of the machine tool;

[0007] A processing part, which is detachably connected to one end of the extension rod and includes a knife handle and a knife head connected to each other; the knife head has blades spirally distributed along its axis; and the end of the knife head away from the knife handle is a planar structure; and

[0008] A positioning part is concentrically connected to the cutter head, and a positioning tip is provided at the center of one end away from the cutter head; the outer diameter of the positioning part is smaller than the outer diameter of the cutter head.

[0009] Furthermore, a locking groove is provided at one end of the extension rod; the knife handle fits into the locking groove.

[0010] Furthermore, the locking groove is a D-shaped groove.

[0011] The above structure can ensure good radial locking, help to firmly fix the tool, and provide good tool rigidity and stability.

[0012] Furthermore, the locking groove is provided with a threaded hole penetrating the extension rod along its radial direction; the threaded hole is connected with a locking top screw. By providing the locking top screw, the processing part is detachably connected to the extension rod, and the top screw structure has no nut and can be completely assembled into the threaded hole, so that the extension rod can better pass through the workpiece hole and reduce the overall eccentric movement of the tool.

[0013] Furthermore, a thread groove is formed between the blades.

[0014] Furthermore, an end of the thread groove adjacent to the planar structure is provided with an end edge rake angle and a chip groove.

[0015] When the spindle rotates clockwise in the above structure, the front angle of the end blade first contacts the processing surface for cutting, and the generated cutting waste is first accumulated on the receiving groove. Then, the cutting waste can be guided upward along the spiral groove and discharged along the direction of spindle rotation, which more effectively removes the chips generated by cutting, reduces cutting resistance, and improves processing efficiency.

[0016] Furthermore, the positioning part includes a connecting shaft and a positioning cone; the connecting shaft is connected to the center of the planar structure; the positioning cone is connected to the end of the connecting shaft away from the planar structure; the positioning tip is arranged at the center of the end face of the positioning cone away from the connecting shaft. The connecting shaft is connected to the center of the planar structure, and the positioning cone is connected to the end of the connecting shaft away from the planar structure. During processing, the positioning part will first enter the pre-processed hole position to provide accurate positioning for the cutting process of the processing part, reduce overall vibration, and ensure the accuracy of processing in the hole.

[0017] The beneficial effects of the utility model are:

[0018] Reduce processing costs and improve processing efficiency. This processing tool is equipped with an extension rod, a processing part and a positioning part. After the extension rod is extended into the wiring hole, the processing part is assembled to perform milling processing on the connecting hole inside the workpiece. Compared with the EDM electric spark machining method, there is no need to customize special copper electrodes, which significantly improves processing efficiency and increases production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the front and back structures of a workpiece to be processed in the background art;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the processing structure of the utility model;

[0024] Figure 6 It is a schematic diagram of the processing structure of the utility model.

[0025] 1. Large hole; 2. Connecting hole; 3. Wiring hole;

[0026] 10. Extension rod; 11. Locking groove; 12. Threaded hole; 13. Locking top screw;

[0027] 20, processing part; 21, tool handle; 22, tool head; 22a, blade; 22b, plane structure; 22c, thread groove; 22d, end edge rake angle; 22e, chip groove;

[0028] 30. Positioning portion; 31. Connecting shaft; 32. Positioning cone; 32a. Positioning tip. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] like Figure 1-Figure 6 As shown, a hole processing tool includes an extension rod 10, a processing portion 20 connected to the extension rod 10, and a positioning portion 30 connected to the processing portion 20.

[0033] The extension rod 10 is used to connect with the main shaft of the machine tool. In this embodiment, a locking groove 11 is provided at one end of the extension rod 10 for the processing part 20 to connect with.

[0034] The processing portion 20 is detachably connected to one end of the extension rod 10, and includes a tool handle 21 and a tool head 22 connected thereto; the tool head 22 has a blade 22a distributed in a spiral along its axis; one end of the tool head 22 away from the tool handle 21 is a planar structure 22b; in the present embodiment, the tool handle 21 is matched with the locking groove 11, specifically, the locking groove 11 is a D-shaped groove; the assembly combination of the D-shaped groove can ensure good radial locking, help to firmly fix the tool, and provide good tool rigidity and stability.

[0035] For the detachable method, the locking groove 11 is provided with a threaded hole 12 passing through the extension rod 10 along its radial direction; the threaded hole 12 is connected with a locking top screw 13. By providing the locking top screw 13, the detachable connection of the processing part 20 on the extension rod 10 is realized, and the top screw structure has no nut and can be completely assembled into the threaded hole 12, so that the extension rod 10 can better pass through the workpiece hole and reduce the overall eccentric movement of the tool.

[0036] The positioning portion 30 is concentrically connected to the cutter head 22, and a positioning tip 32a is provided at the center of the end away from the cutter head 22; the outer diameter of the positioning portion 30 is smaller than the outer diameter of the cutter head 22; in the present embodiment, a thread groove 22c is formed between the cutting edges 22a; the thread groove 22c is provided with an end edge rake angle 22d and a chip groove 22e at one end adjacent to the planar structure 22b; when the spindle rotates clockwise for processing, the end edge rake angle 22d of the above structure first contacts and cuts the processing surface, and the generated cutting waste is first accumulated on the receiving groove, and then the cutting waste can be guided upward along the spiral groove and discharged along the direction of rotation of the spindle, so as to more effectively remove the chips generated by cutting, reduce the cutting resistance, and improve the processing efficiency.

[0037] The positioning part 30 includes a connecting shaft 31 and a positioning cone 32; the connecting shaft 31 is connected to the center of the planar structure 22b; the positioning cone 32 is connected to one end of the connecting shaft 31 away from the planar structure 22b; the positioning tip 32a is arranged at the center of the end face of the positioning cone 32 away from the connecting shaft 31. During processing, the positioning part 30 will first enter the pre-processed hole position to provide accurate positioning for the cutting process of the processing part 20, reduce overall vibration, and ensure the accuracy of processing in the hole.

[0038] Working principle:

[0039] Please continue reading Figure 5-Figure 6This processing is carried out on a milling machine. First, the workpiece is pre-drilled to drill out the wiring hole 3 and the pre-processing part 20 of the connecting hole 2. At this time, the pre-processing part 20 of the connecting hole 2 has a through hole of D10.0. Then, the extension rod 10 is inserted along the wiring hole 3, and the processing part 20 and the extension rod 10 are assembled in the workpiece hole using the locking screw 13. When the processing starts, the spindle rotates and drives the processing tool as a whole to extend in the direction of the pre-processing part 20 of the connecting hole 2. The positioning part 30 first enters the pre-processing part 20 for guidance (the outer diameter of the positioning part 30 is less than or equal to the pre-processing part 20, that is, less than or equal to D10.0). As the spindle continues to extend, the processing part 20 processes the pre-processing part 20 until it penetrates into another large hole 1 to complete the processing.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hole machining tool, characterized in that: include: An extension rod, the extension rod is used to connect with the main shaft of the machine tool; A processing part, which is detachably connected to one end of the extension rod and includes a connected handle and a cutter head; The cutter head has blades spirally distributed along its axis; one end of the cutter head away from the handle is a planar structure; and A positioning part is concentrically connected to the cutter head, and a positioning tip is provided at the center of one end away from the cutter head; the outer diameter of the positioning part is smaller than the outer diameter of the cutter head.

2. The hole machining tool according to claim 1, characterized in that: A locking groove is provided at one end of the extension rod; the knife handle fits with the locking groove.

3. The hole machining tool according to claim 2, characterized in that: The locking groove is a D-shaped groove.

4. The hole machining tool according to claim 2, characterized in that: The locking groove is provided with a threaded hole penetrating the extension rod along its radial direction; the threaded hole is connected with a locking top screw.

5. The hole machining tool according to claim 1, characterized in that: A thread groove is formed between the blades.

6. The hole machining tool according to claim 5, characterized in that: An end of the thread groove adjacent to the plane structure is provided with an end edge rake angle and a chip groove.

7. The hole machining tool according to claim 1, characterized in that: The positioning portion includes a connecting shaft and a positioning cone; the connecting shaft is connected to the center of the planar structure; the positioning cone is connected to one end of the connecting shaft away from the planar structure; the positioning tip is arranged at the center of the end face of the positioning cone away from the connecting shaft.

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