Adjustable machining shaft cutter handle fixing structure

Abstract

The utility model discloses an adjustable machining shaft cutter handle fixing structure, which belongs to the field of cutter handle installation and comprises a machining shaft and a cutter handle, one end of the cutter handle is provided with a cutter handle installation portion, the other end of the cutter handle is provided with a cutter installation portion, and the cutter handle is matched with the machining shaft through the cutter handle installation portion. A positioning disc is detachably connected to the end of the machining shaft, and a positioning key is arranged on the side, away from the machining shaft, of the positioning disc and is a V-shaped key or an inverted trapezoidal key. A connecting part is arranged between the cutter handle mounting part and the cutter mounting part, is provided with a threaded section, is in threaded connection with an adjusting block, and is also in threaded connection with a fastener pressing adjusting block; a positioning block is arranged on one side of the adjusting block, a positioning key groove is formed in the end, facing the cutter handle installation portion, of the positioning block, the positioning key groove is a V-shaped key groove or an inverted trapezoidal key groove, and when the cutter handle is matched with the machining shaft, a positioning key can be clamped into the positioning key groove. And meanwhile, the original use structures of the milling shaft and the turning cutter handle are not influenced.

Description

Technical Field

[0001] The utility model relates to the field of tool handle installation, in particular to an adjustable processing shaft tool handle fixing structure. Background Art

[0002] At present, the requirements for machine tools in the field of machine tool processing are getting higher and higher, and the processing procedures are becoming more intensive. More and more workpieces require machine tools with turning and milling functions, while simple milling machines only have milling functions. The processing axis has no positioning and locking, and the turning tool cannot be positioned. Even if the turning tool can be successfully installed, it cannot be guaranteed that the turning tool will not rotate, and the turning function cannot be realized.

[0003] Conventional tool holder fixing solutions use locating keys or locating pins, but there is still a gap between the mating surfaces. During the turning process of ball cutter tools, the cutting edge angle may change, causing changes in the tool force and vibration during tool holder processing, affecting the processing accuracy.

[0004] Moreover, the fixed structure of the machining axis and the tool holder often destroys the original structure of the machining axis, which affects the installation of the milling tool on the machining axis later. Similarly, in order to adapt to the new machining axis positioning structure, the tool holder is often added or changed with related structures, resulting in new restrictions when the turning tool is installed on the original lathe machining axis. The incompatibility caused by the current positioning structure increases the company's processing costs.

[0005] In view of the above problems, the utility model designs and manufactures an adjustable machining shaft tool handle fixing structure to overcome the above defects. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides an adjustable machining shaft and toolholder fixing structure, which can improve the positioning stability of the existing milling machining shaft and turning toolholder without affecting the original use structure of the milling machining shaft and turning toolholder.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an adjustable machining shaft tool handle fixing structure, comprising a machining shaft and a tool handle, one end of the tool handle is set as a tool handle mounting portion, the other end of the tool handle is set as a tool mounting portion, and the tool handle is matched with the machining shaft through the tool handle mounting portion;

[0008] The end of the processing shaft is detachably connected to a positioning plate, and a positioning key is provided on the side of the positioning plate away from the processing shaft, and the positioning key is configured as a V-shaped key or an inverted trapezoidal key;

[0009] A connecting portion is provided between the tool handle mounting portion and the tool mounting portion, the connecting portion is provided with a threaded section, an adjusting block is screwed onto the threaded section, and a fastener is also screwed onto the threaded section to press the adjusting block tightly;

[0010] A positioning block is provided on one side of the adjustment block, and a positioning key groove is provided on one end of the positioning block facing the tool handle mounting portion. The positioning key groove is configured as a V-shaped key groove or an inverted trapezoidal key groove. When the tool handle cooperates with the machining shaft, the positioning key can be inserted into the positioning key groove.

[0011] Preferably, the inclined surfaces on both sides of the positioning key are symmetrically arranged with respect to the center line of the positioning plate as a reference, and the inclined surfaces on both sides of the positioning key slot are symmetrically arranged with respect to the center line of the adjustment block as a reference.

[0012] Preferably, the two bevel angles of the positioning key slot are equal to the two bevel angles of the positioning key.

[0013] Preferably, the connecting portion comprises a first boss, the first boss is arranged at an end of the tool handle mounting portion away from the processing axis, and the threaded section is arranged between the first boss and the tool mounting portion;

[0014] A tapered hole is provided at the center of the end of the processing shaft, and the tool handle mounting portion of the tool handle cooperates with the processing shaft through the tapered hole;

[0015] The end of the tapered hole is provided with a second boss, and the second boss protrudes from the end of the processing shaft;

[0016] When the tool handle is matched with the processing shaft, the end of the second boss can abut against the end surface of the first boss.

[0017] Preferably, a circular hole is provided at the center of the positioning plate, and the diameter of the circular hole is larger than the outer diameter of the second boss;

[0018] When the positioning disk is connected to the end of the processing shaft, the second boss protrudes from the end surface of the positioning disk.

[0019] Preferably, the positioning block protrudes from the end surface of the adjustment block toward the tool handle mounting portion.

[0020] Preferably, a tool holding portion is provided on the threaded segment, the cross section of the tool holding portion is non-circular, and the tool holding portion is arranged at the end of the threaded segment close to the tool mounting portion.

[0021] Preferably, the outer side of the fastener is configured as a non-circular structure.

[0022] Preferably, the diameter of the first boss is larger than the diameter of the threaded section, and the diameter of the threaded section is larger than the diameter of the tool mounting portion.

[0023] Preferably, a knife clamping portion is provided on the first boss, and the knife clamping portion is configured as a trapezoidal annular groove structure.

[0024] The utility model is beneficial in that:

[0025] 1. The utility model can adjust the position of the positioning block by rotating the adjusting block and the fastener, which is equivalent to adjusting the position of the positioning keyway, and then the V-shaped or inverted trapezoidal positioning keyway and the positioning key cooperate with each other, thereby eliminating the positioning gap of the traditional positioning key between the tool handle and the processing axis. When the tool is subjected to force changes, the vibration caused by the positioning gap is avoided, thereby improving the processing accuracy and surface quality.

[0026] 2. The utility model does not require structural changes to the machining axis. It only needs to connect a positioning plate to the end of the machining axis and set a positioning key on the end face of the positioning plate away from the machining axis, which can cooperate with the positioning key slot on the tool handle to realize the rotational fixation of the machining axis and the tool handle during processing, so that the milling machine becomes a turning and milling compound, further intensifies the process, and realizes multiple uses of one machine.

[0027] 3. The positioning keyway on the tool handle of the utility model is arranged on the connecting part between the tool handle mounting part and the tool mounting part, and is detachably connected to the connecting part, so it does not affect the connection between the tool handle and the machining axis and the connection between the tool and the tool handle, and retains the original turning connection structure of the tool handle, so that the tool handle can still be connected to the original lathe machining axis.

[0028] 4. When the tool handle of the utility model cooperates with the processing shaft, the end of the second boss can abut against the end surface of the first boss, and the tool handle mounting portion of the tool handle cooperates with the processing shaft through the tapered hole, so that double positioning is achieved between the tool handle and the processing shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of an adjustable machining axis tool holder fixing structure;

[0030] Figure 2 A schematic diagram of an adjustable machining axis tool holder fixing structure without a tool holder and a positioning key;

[0031] Figure 3 This is an exploded view of the knife handle of the utility model;

[0032] Figure 4 It is a schematic diagram of the positioning plate of the utility model.

[0033] In the figure: 1-machining axis, 2-tool handle, 3-positioning plate, 11-tapered hole, 12-second boss, 21-tool handle mounting part, 22-first boss, 23-tool clamping part, 24-adjusting block, 25-fastener, 26-tool clamping part, 27-tool mounting part, 28-positioning block, 29-positioning keyway, 30-threaded section, 31-round hole, 32-positioning key. DETAILED DESCRIPTION

[0034] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 4 As shown, an adjustable machining shaft tool handle fixing structure includes a machining shaft 1 and a tool handle 2. One end of the tool handle 2 is set as a tool handle mounting portion 21. The tool handle mounting portion 21 is in a frustum shape with an inclination of 1:10. A tapered hole 11 is provided at the center of the end of the machining shaft 11. The tool handle mounting portion 21 of the tool handle 2 cooperates with the machining shaft 1 through the tapered hole 11. The other end of the tool handle 2 is set as a tool mounting portion 27. The tool is mounted on the tool handle 2 through the tool mounting portion 27.

[0036] A positioning disk 3 is detachably connected to the end of the machining shaft 1. A positioning key 32 is provided on the side of the positioning disk 3 away from the machining shaft 1. The positioning key 32 is set to a V-shaped key or an inverted trapezoidal key. The inclined surfaces on both sides of the positioning key 32 are symmetrically arranged with respect to the center line of the positioning disk 3. The arrangement of the positioning key 32 does not require changes to the structure of the machining shaft 1 itself. By utilizing the detachably connected positioning disk 3, the machining shaft 1 and the tool handle 2 can ultimately be rotationally fixed during machining, thereby transforming the milling machine into a turning-milling compound, further concentrating the process, and realizing multiple uses of one machine.

[0037] A connecting portion is provided between the tool handle mounting portion 21 and the tool mounting portion 27 of the utility model, and a threaded section 30 is provided on the connecting portion. An adjusting block 24 is screwed on the threaded section 30, and a fastener 25 is also screwed on the threaded section 30. The fastener 25 can be used to tighten the adjusting block 24. The above structure does not affect the connection between the tool handle 2 and the machining axis 1 and the connection between the tool and the tool handle 2, and retains the original turning connection structure of the tool handle 2, so that the tool handle 2 can still be connected to the original lathe machining axis.

[0038] Specifically, a positioning block 28 is provided on one side of the adjustment block 24, and a positioning key 32 groove 29 is provided on one end of the positioning block 28 facing the tool handle mounting portion 21. The positioning key 32 groove 29 is set to a V-shaped key groove or an inverted trapezoidal key groove. The inclined surfaces on both sides of the positioning key 32 groove 29 are symmetrically arranged with respect to the center line of the adjustment block 24. The two inclined surface angles of the positioning key 32 groove 29 are equal to the two inclined surface angles of the positioning key 32. When the tool handle 2 is matched with the machining axis 1, the positioning key 32 on the end face of one side of the positioning disk 3 can be inserted into the positioning key 32 groove 29, which can eliminate the positioning gap of the traditional positioning key 32 between the tool handle 2 and the machining axis 1.

[0039] In actual use, the position of the positioning block 28 can be adjusted by rotating the adjustment block 24 and the fastener 25, which is equivalent to adjusting the position of the positioning key 32 groove 29. The V-shaped or inverted trapezoidal positioning key 32 groove 29 and the positioning key 32 cooperate with each other to eliminate the positioning gap of the traditional positioning key 32 between the tool handle 2 and the processing axis 1. When the force on the tool changes, the vibration caused by the positioning gap is avoided, thereby improving the processing accuracy and surface quality.

[0040] The connection part of the utility model includes a first boss 22, which is a truncated cone, and the diameter of the first boss 22 is greater than the maximum diameter of the tool handle mounting part 21. The first boss 22 is arranged at the end of the tool handle mounting part 21 away from the processing shaft 1, and the threaded section 30 is arranged between the first boss 22 and the tool mounting part 27. A second boss 12 is arranged at the end of the center tapered hole 11 at the end of the processing shaft 1, and the second boss 12 protrudes from the end of the processing shaft 1. When the tool handle 2 is matched with the processing shaft 1, the end of the second boss 12 can abut against the end face of the first boss 22. The tool handle mounting part 21 of the tool handle 2 is matched with the processing shaft 1 through the tapered hole 11, and double positioning is achieved between the tool handle 2 and the processing shaft 1.

[0041] A circular hole 31 is provided in the center of the positioning disk 3, and the diameter of the circular hole 31 is larger than the outer diameter of the second boss 12. When the positioning disk 3 is connected to the end of the processing shaft 1, it will be sleeved on the second boss 12 through the circular hole 31, and the second boss 12 protrudes from the end face of the positioning disk 3, ensuring that the end of the second boss 12 can abut against the end face of the first boss 22.

[0042] Since the first boss 22 is arranged between the threaded section 30 and the shank mounting portion 21, in order to ensure that the positioning key 32 can cooperate with the positioning key 32 groove 29, the positioning block 28 of the utility model preferably protrudes from the end face of the adjustment block 24 in the direction of the shank mounting portion 21, so that the positioning key 32 groove 29 is close to the shank mounting portion 21. Of course, in order to avoid interference between the positioning block 28 and the positioning plate 3, the height of the positioning block 28 is preferably not greater than the thickness of the first boss 22.

[0043] The threaded section 30 of the utility model is preferably provided with a tool clamping portion 26, the cross section of the tool clamping portion 26 is non-circular, and two symmetrical clamping planes are preferably processed on the side wall of the tool clamping portion 26 to facilitate the tool to clamp the position, and the tool clamping portion 26 is specifically arranged at the end of the threaded section 30 near the tool mounting portion 27. Similarly, the outer side of the fastener 25 is also preferably set to a non-circular structure, preferably a polygonal structure, to facilitate the clamping of the tool, and finally by adjusting the fastener 25, the fastener 25 and the adjacent end surface of the adjustment block 24 are fitted, a structure similar to double nut locking is achieved, and the position of the adjustment block 24 is fixed.

[0044] The diameter of the first boss 22 is larger than that of the threaded section 30 , and the diameter of the threaded section 30 is larger than that of the tool mounting portion 27 . When the adjustment block 24 is installed, the tool mounting portion 27 is inserted into the adjustment block 24 and connected to the threaded section 30 .

[0045] The first boss 22 is preferably provided with a knife clamping portion 23 , which is configured as a trapezoidal annular groove structure, so as to facilitate the knife clamp to clamp the knife handle 2 .

[0046] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. An adjustable machining shaft toolholder fixing structure, characterized in that: It comprises a processing shaft (1) and a tool handle (2), wherein one end of the tool handle (2) is provided as a tool handle mounting portion (21), and the other end of the tool handle (2) is provided as a tool mounting portion (27), and the tool handle (2) cooperates with the processing shaft (1) via the tool handle mounting portion (21); The end of the processing shaft (1) is detachably connected to a positioning plate (3), and a positioning key (32) is provided on a side of the positioning plate (3) away from the processing shaft (1), and the positioning key (32) is configured as a V-shaped key or an inverted trapezoidal key; A connecting portion is provided between the tool handle mounting portion (21) and the tool mounting portion (27), the connecting portion being provided with a threaded section (30), an adjusting block (24) being screwed onto the threaded section (30), and a fastener (25) being screwed onto the threaded section (30) for pressing the adjusting block (24); A positioning block (28) is provided on one side of the adjustment block (24); a positioning keyway (29) is provided on one end of the positioning block (28) facing the tool handle mounting portion (21); the positioning keyway (29) is configured as a V-shaped keyway or an inverted trapezoidal keyway; when the tool handle (2) is mated with the machining shaft (1), the positioning key (32) can be inserted into the positioning keyway (29).

2. The adjustable machining shaft tool holder fixing structure according to claim 1, characterized in that: The inclined surfaces on both sides of the positioning key (32) are symmetrically arranged with the center line of the positioning plate (3) as a reference, and the inclined surfaces on both sides of the positioning key slot (29) are symmetrically arranged with the center line of the adjustment block (24) as a reference.

3. The adjustable machining shaft tool holder fixing structure according to claim 2, characterized in that: The two inclined surface angles of the positioning key groove (29) are equal to the two inclined surface angles of the positioning key (32).

4. The adjustable machining shaft tool holder fixing structure according to claim 1, characterized in that: The connecting portion comprises a first boss (22), the first boss (22) being arranged at an end of the tool handle mounting portion (21) away from the processing axis (1), and the threaded section (30) being arranged between the first boss (22) and the tool mounting portion (27); A tapered hole (11) is provided at the center of the end of the processing shaft (1), and the shank mounting portion (21) of the shank (2) cooperates with the processing shaft (1) through the tapered hole (11); A second boss (12) is provided at the end of the tapered hole (11), and the second boss (12) protrudes from the end of the processing shaft (1); When the tool handle (2) is matched with the processing shaft (1), the end of the second boss (12) can abut against the end surface of the first boss (22).

5. The adjustable machining shaft tool holder fixing structure according to claim 4, characterized in that: A circular hole (31) is provided at the center of the positioning plate (3), and the diameter of the circular hole (31) is larger than the outer diameter of the second boss (12); When the positioning disk (3) is connected to the end of the processing shaft (1), the second boss (12) protrudes from the end surface of the positioning disk (3).

6. The adjustable machining shaft tool holder fixing structure according to claim 1, characterized in that: The positioning block (28) protrudes from the end surface of the adjustment block (24) in the direction of the tool handle mounting portion (21).

7. The adjustable machining shaft tool holder fixing structure according to claim 1, characterized in that: A tool clamping portion (26) is provided on the threaded section (30); the cross section of the tool clamping portion (26) is non-circular; the tool clamping portion (26) is arranged at an end of the threaded section (30) close to the tool mounting portion (27).

8. The adjustable machining shaft tool holder fixing structure according to claim 7, characterized in that: The outer side of the fastener (25) is configured as a non-circular structure.

9. The adjustable machining shaft tool holder fixing structure according to claim 4, characterized in that: The diameter of the first boss (22) is greater than the diameter of the threaded section (30), and the diameter of the threaded section (30) is greater than the diameter of the tool mounting portion (27).

10. The adjustable machining shaft tool holder fixing structure according to claim 4, characterized in that: A knife clamping portion (23) is provided on the first boss (22), and the knife clamping portion (23) is configured as a trapezoidal annular groove structure.

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