Interpolation cutter clamping structure

Abstract

The utility model discloses an inner tooth cutter clamping structure, the handle is inserted to the clamping seat through -hole of clamping seat is held bolt one clamping, the inner tooth cutter shaft is inserted to the handle through -hole of handle is held bolt two clamping, and the inner tooth cutter shaft, handle and clamping seat form the clamping of the nested type, and the clamping combination structure of inner tooth cutter shaft, handle and clamping seat is simple, and when guaranteeing the force of the inner tooth cutter shaft along the axial force transmission to the clamping seat through handle, improve the clamping stability of inner tooth cutter shaft, the setting of handle through -hole and clamping seat through -hole not only facilitate the quick dismounting of handle and inner tooth cutter shaft, but also benefit the heat of inner tooth cutter shaft when heating and promptly emit heat to the outside, prolong the service life of inner tooth cutter, improve the quality of inner tooth processing, improve the gear cutting accuracy, and the practicality is high.

Description

Technical Field

[0001] This utility model relates to an internal gear cutting tool clamping structure, belonging to the field of CNC lathe tool technology. Background Technology

[0002] Machining the tooth surfaces of internal and external gears or racks using a gear shaper cutter via generating or forming methods is called gear shaping. Gear shaping can machine both spur and helical gears; a gear shaper cutter is essentially a gear with a ground rake angle and a cutting edge. Gear shaping is generally achieved through the reciprocating cutting motion of the gear shaper cutter in conjunction with the rotation of the workpiece. Internal gear shapers are used to machine internal gear rings, internal gear splines, etc. Internal gear shapers consist of a cutting edge made of cemented carbide and a tool holder made of carbon steel. The cutting edge and tool holder can be connected by welding or clamping. The tool holder is mounted on the tool holder of a lathe. The main drawback is: 1. Welded connections between the cutting edge and the tool holder have unstable welding quality. During use, due to stress or improper operation, there is a risk that the welded part may crack or even break. Clamped connections between the cutting edge and the tool holder offer greater practicality as the cutting edge can be replaced. However, they require high stability in clamping the cutting edge. Furthermore, the cutting edge is subjected to significant force and heat during cutting, which can easily generate high temperatures under high-intensity workloads. If the clamping structure cannot dissipate heat in time, it will shorten the tool's lifespan and affect the quality of machining.

[0003] 2. During the sawing process, iron filings are generated. These filings enter between the cutting edge and the tool holder, as well as between the tool holder and the tool base, making it difficult to disassemble the cutting edge and the tool holder. Forced disassembly may damage the cutting edge. Utility Model Content

[0004] The internal gear cutting tool clamping structure provided by this utility model has a simple clamping combination structure of internal gear cutting tool shaft, tool holder and clamping seat, which improves the clamping stability of internal gear cutting tool shaft. It not only facilitates quick assembly and disassembly of tool holder and internal gear cutting tool shaft, but also helps internal gear cutting tool shaft to dissipate heat in time when heated, extending the service life of internal gear cutting tool, improving the quality of internal gear cutting, improving gear cutting accuracy, and has high practicality.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An internal gear cutting tool clamping structure includes a clamping seat fixed to a lathe turret by bolts, a tool holder mounted in the clamping seat, and an internal gear cutting tool shaft mounted in the tool holder. The clamping seat has a clamping seat through hole and a bolt hole 1 communicating with the clamping seat through hole. The tool holder extends into the clamping seat through hole and is clamped by a clamping bolt 1 installed in the bolt hole 1. The tool holder has a tool holder through hole along its central axis and a bolt hole 2 communicating with the tool holder through hole. The internal gear cutting tool shaft extends into the tool holder through hole and is clamped by a clamping bolt 2 installed in the bolt hole 2. The cutting edge portion at the front end of the internal gear cutting tool shaft extends out from the tool holder through hole.

[0006] Preferably, the tool holder is integrally formed by an insert section that extends into the through hole of the clamping seat with a clearance fit and an extend section with an outer diameter larger than the insert section. An annular stepped surface is formed between the insert section and the extend section, and the annular stepped surface abuts against the front end face of the clamping seat.

[0007] Preferably, the bolt hole 1 is radially opened along the through hole of the clamping seat, and multiple rows of bolt holes 1 are opened on the clamping seat. Each row of bolt holes 1 is evenly spaced along the axial direction of the through hole of the clamping seat, and the multiple rows of bolt holes 1 are symmetrically distributed with the central axis of the through hole of the clamping seat as the center.

[0008] Preferably, the outer wall of the extension section has a contact plane that is axially arranged and corresponds to the bolt hole, and the clamping bolt is pressed against the contact plane.

[0009] Preferably, the second bolt hole is radially opened along the through hole of the tool holder, and the second bolt hole is evenly spaced along the axial direction of the through hole of the tool holder. One second bolt hole is opened on the protruding section, and multiple second bolt holes are opened on the inserted section.

[0010] Preferably, the through hole of the tool holder consists of a mating section that is clearance-fitted with the inner tooth cutting tool shaft and a hollow section disposed on the rear side of the mating section. The inner diameter of the hollow section is larger than that of the mating section, and an annular stepped surface is formed in the hollow section.

[0011] The beneficial effects of this utility model are: This utility model discloses an internal gear shaping cutter clamping structure. The tool shank extends into the clamping seat through hole of the clamping base and is clamped by clamping bolt one. The internal gear shaping cutter shaft extends into the tool shank through hole of the tool shank and is clamped by clamping bolt two. The internal gear shaping cutter shaft, tool shank, and clamping base form a stacked clamping structure. The clamping combination structure of the internal gear shaping cutter shaft, tool shank, and clamping base is simple and ensures that the axial force of the internal gear shaping cutter shaft during shaping is transmitted to the clamping base through the tool shank, thereby improving the clamping stability of the internal gear shaping cutter shaft. The through holes of the tool shank and clamping base not only facilitate the quick assembly and disassembly of the tool shank and internal gear shaping cutter shaft, but also help the internal gear shaping cutter shaft to dissipate heat in time when heated, extending the service life of the internal gear shaping cutter, improving the quality of internal gear shaping, and improving the gear shaping accuracy. It is highly practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal tooth cutting tool clamping structure of this utility model.

[0013] Figure 2 for Figure 1 A sectional view.

[0014] Figure 3 This is a cross-sectional view of the tool holder.

[0015] Figure 4 This is a schematic diagram of the knife handle. Detailed Implementation

[0016] The following is combined with Figures 1-4 The embodiments of this utility model will be described in detail below.

[0017] The internal gear cutting tool clamping structure includes a clamping seat 1 fixed to a lathe turret by bolts, a tool holder 2 installed in the clamping seat 1, and an internal gear cutting tool shaft 3 installed in the tool holder 2. The clamping seat 1 has a clamping seat through hole 11 and a bolt hole 12 communicating with the clamping seat through hole 11. The tool holder 2 extends into the clamping seat through hole 11 and is clamped by a clamping bolt 4 installed in the bolt hole 12. The tool holder 2 has a tool holder through hole 21 along its central axis and a bolt hole 22 communicating with the tool holder through hole 21. The internal gear cutting tool shaft 3 extends into the tool holder through hole 21 and is clamped by a clamping bolt 5 installed in the bolt hole 22. The cutting edge portion at the front end of the internal gear cutting tool shaft 3 extends out from the tool holder through hole 21.

[0018] The above-described internal gear cutting tool clamping structure has a tool holder 2 inserted into the clamping seat through hole 11 of the clamping seat 1 and clamped by clamping bolt 4. The internal gear cutting tool shaft 3 is inserted into the tool holder through hole 21 of the tool holder 2 and clamped by clamping bolt 5. The internal gear cutting tool shaft 3, tool holder 2, and clamping seat 1 form a stacked clamping structure. The clamping combination structure of the internal gear cutting tool shaft 3, tool holder 2, and clamping seat 1 is simple and ensures that the axial force of the internal gear cutting tool shaft 3 during cutting is transmitted to the clamping seat 1 through the tool holder 2, thereby improving the clamping stability of the internal gear cutting tool shaft 3. The tool holder through hole 21 and the clamping seat through hole 11 not only facilitate the quick assembly and disassembly of the tool holder 2 and the internal gear cutting tool shaft 3, but also help the internal gear cutting tool shaft 3 to dissipate heat in time when heated, extending the service life of the internal gear cutting tool, improving the quality of internal gear cutting, improving the gear cutting accuracy, and having high practicality.

[0019] The tool holder 2 is integrally formed by an insertion section 23 that extends into the through hole 11 of the clamping seat and an extension section 24 with an outer diameter larger than the insertion section 23. An annular stepped surface 25 is formed between the insertion section 23 and the extension section 24, and the annular stepped surface 25 abuts against the front end face of the clamping seat 1. When the tool holder 2 extends into the through hole 11 of the clamping seat and the annular stepped surface 25 abuts against the front end face of the clamping seat 1, it is fully inserted. The clamping bolt 4 is screwed into the bolt hole 12 to tighten the clamping bolt 4 against the insertion section 23, thus clamping the tool holder 2 in the clamping seat 1. During the cutting process of the internal gear cutting shaft 3, the annular stepped surface 25 transmits the force from the internal gear cutting shaft 3 to the tool holder 2 to the clamping seat 1, ensuring the reliability of the tool holder 2 in the clamping seat 1.

[0020] The bolt holes 12 are radially formed along the through hole 11 of the clamping seat. Multiple rows of bolt holes 12 are formed on the clamping seat 1, with each row evenly spaced along the axial direction of the through hole 11. These rows of bolt holes 12 are symmetrically distributed with the central axis of the through hole 11 as the center. As shown in the figure, the clamping seat 1 has two rows of bolt holes 12, each row containing three bolt holes 12 evenly spaced along the axial direction of the through hole 11. The clamping bolts 4 in each bolt hole 12 abut against the tool holder 2, clamping the tool holder 2 in the clamping seat 1, ensuring the clamping stability and reliability of the tool holder 2.

[0021] The outer wall of the extension section 23 has a contact plane 26 arranged axially and corresponding to the bolt hole 12. The clamping bolt 4 abuts against the contact plane 26. The contact plane 26 on the extension section 23 of the tool holder 2 forms a planar contact with the end of the clamping bolt 4, which increases the clamping force on the tool holder 2 and further improves the clamping stability and reliability of the tool holder 2.

[0022] The bolt holes 22 are radially formed along the through hole 21 of the tool holder, and are evenly spaced axially along the through hole 21. One bolt hole 22 is formed on the protruding section 24, and multiple bolt holes 22 are formed on the extending section 23. As shown in the attached drawings, there are three bolt holes 22, and two bolt holes 22 are formed on the extending section 23. The clamping bolts 25 are screwed into the bolt holes 22 and pressed against the inner gear cutting shaft 3, clamping the inner gear cutting shaft 3 in the tool holder 2. This allows for checking the tightness of the clamping bolts 25 on the protruding section 24 when the inner gear cutting shaft 3 is not performing cutting operations, thus improving the clamping stability of the inner gear cutting shaft 3.

[0023] The tool holder through hole 21 consists of a mating section 27 that has a clearance fit with the internal gear cutting shaft 3 and a hollow section 28 located behind the mating section. The inner diameter of the hollow section 28 is larger than that of the mating section 27, and an annular stepped surface 29 is formed in the hollow section 28. The internal gear cutting shaft 3 does not extend into the hollow section 28. The hollow section 28 facilitates the timely dissipation of heat from the internal gear cutting shaft 3 when heated, and also facilitates the rearward discharge of iron filings that have entered the mating section 27. When disassembling the tool holder 2, after loosening the clamping bolt 4, the external force-bearing component pushes against the annular stepped surface 29 to push the tool holder 2 out of the clamping seat 1, avoiding the problem of difficult disassembly of the tool holder 2 due to iron filings entering between the tool holder 2 and the clamping seat 1.

[0024] The technical solutions of the embodiments of this utility model have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. An internal gear shaping cutter clamping structure, comprising a clamping base fixed to a lathe turret by bolts, a tool holder mounted in the clamping base, and an internal gear shaping cutter shaft mounted in the tool holder, characterized in that: The clamping base has a clamping through hole and a bolt hole 1 connected to the clamping through hole. The tool holder extends into the clamping through hole and is clamped by a clamping bolt 1 installed in the bolt hole 1. The tool holder has a tool holder through hole along the central axis and a bolt hole 2 connected to the tool holder through hole. The internal gear cutting shaft extends into the tool holder through hole and is clamped by a clamping bolt 2 installed in the bolt hole 2. The cutting edge of the front end of the internal gear cutting shaft extends out from the tool holder through hole.

2. The internal tooth cutting tool clamping structure according to claim 1, characterized in that: The tool holder is integrally formed by an extension section that extends into the through hole of the clamping seat with a clearance fit and an extension section with an outer diameter larger than the extension section. An annular step surface is formed between the extension section and the extension section, and the annular step surface abuts against the front end face of the clamping seat.

3. The internal tooth cutting tool clamping structure according to claim 1, characterized in that: The bolt hole 1 is radially opened along the through hole of the clamping seat. Multiple rows of bolt holes 1 are opened on the clamping seat. Each row of bolt holes 1 is evenly spaced along the axial direction of the through hole of the clamping seat, and the multiple rows of bolt holes 1 are symmetrically distributed with the central axis of the through hole of the clamping seat as the center.

4. The internal tooth cutting tool clamping structure according to claim 2, characterized in that: The outer wall of the extension section has a contact plane that is axially arranged and corresponds to the bolt hole, and the clamping bolt is pressed against the contact plane.

5. The internal tooth cutting tool clamping structure according to claim 2, characterized in that: The second bolt hole is radially opened along the through hole of the tool holder, and the second bolt hole is evenly spaced along the axial direction of the through hole of the tool holder. One second bolt hole is opened on the protruding section, and multiple second bolt holes are opened on the inserted section.

6. The internal tooth cutting tool clamping structure according to claim 5, characterized in that: The tool holder through hole consists of a mating section that has a clearance fit with the internal gear cutting tool shaft and a hollow section located behind the mating section. The inner diameter of the hollow section is larger than that of the mating section, and an annular stepped surface is formed in the hollow section.

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