Adjustable turning cutter handle fixing structure for shaft machining

Abstract

The utility model discloses an adjustable turning cutter handle fixing structure for a machining shaft, 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, a threaded section is arranged on the connecting part, and the connecting part is in threaded connection with an adjusting block and is further 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 holder installation, in particular to an adjustable turning tool holder fixing structure for a machining shaft. 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 turning tool holder fixing structure for a machining shaft 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 turning tool holder fixing structure for a machining axis, which can improve the positioning stability of the existing milling machining axis and the turning tool holder without affecting the original use structure of the milling machining axis and the turning tool holder.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an adjustable turning tool holder fixing structure for a machining axis, comprising a machining axis and a tool holder, one end of the tool holder is set as a tool holder mounting portion, the other end of the tool holder is set as a tool mounting portion, and the tool holder cooperates with the machining axis through the tool holder 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. The positioning key is set as a V-shaped key or an inverted trapezoidal key, and the inclined surfaces on both sides of the positioning key are symmetrically arranged with the center line of the positioning plate as a reference;

[0009] A connecting portion is provided between the handle mounting portion and the tool mounting portion, at least one screw hole is provided on the side wall of the connecting portion, a positioning adjustment block is sleeved on the connecting portion, at least one radial through hole is provided on the positioning adjustment block, the positioning adjustment block is fixed to the connecting portion by screws, and the diameter of the radial through hole is slightly larger than the diameter of the screw;

[0010] A positioning key groove is provided on the side wall of the positioning adjustment block, and the positioning key groove is set as a V-shaped key groove or an inverted trapezoidal key groove. The two inclined surfaces of the positioning key groove are symmetrically arranged with the center line of the positioning adjustment block as a reference. When the tool handle is matched with the processing axis, the positioning key can be inserted into the positioning key groove.

[0011] Preferably, the two bevel angles of the positioning key slot are equal to the two bevel angles of the positioning key.

[0012] 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 screw hole is arranged on a side wall of the first boss;

[0013] A matching hole is provided at the center of the positioning and adjusting block, the diameter of the matching hole is equal to the diameter of the first boss, and the positioning and adjusting block is sleeved on the first boss through the matching hole.

[0014] Preferably, 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, there is at least one positioning key groove, and a plurality of positioning key grooves are evenly distributed around the circumference of the center line of the positioning adjustment block;

[0020] The number of the positioning key slots corresponds to the number of the positioning keys.

[0021] Preferably, at least one vertical groove is provided on the side wall of the positioning and adjusting block, and the radial through hole is arranged at the bottom of the vertical groove.

[0022] Preferably, the vertical grooves and the positioning key grooves are arranged alternately.

[0023] Preferably, a radial groove is provided on the end surface of the positioning disk away from the processing axis, the radial groove passes through the side wall of the positioning disk, a radial slider slides in the radial groove, and the positioning key is provided on the end surface of the radial slider away from the positioning disk.

[0024] Preferably, a third boss is provided between the first boss and the tool mounting portion, and the diameter of the third boss is greater than the diameter of the first boss;

[0025] The third boss is provided with a knife clamping portion, and the knife clamping portion is configured as a trapezoidal annular groove structure.

[0026] The utility model is beneficial in that:

[0027] 1. In the utility model, since the diameter of the radial through hole is slightly larger than the diameter of the screw, the positioning adjustment block can be fine-tuned in the circumferential or axial direction of the connecting portion, which is equivalent to adjusting the position of the positioning keyway. Combined with the V-shaped or inverted trapezoidal positioning keyway and the positioning key, the positioning gap of the traditional positioning key between the tool handle and the processing axis is eliminated. When the force on the tool changes, the vibration caused by the positioning gap is avoided, thereby improving the processing accuracy and surface quality.

[0028] 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.

[0029] 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.

[0030] 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

[0031] Figure 1 A schematic diagram of a turning tool holder fixing structure for an adjustable machining axis;

[0032] Figure 2 A schematic diagram of a turning tool holder fixing structure for an adjustable machining axis without a tool holder and a positioning key;

[0033] Figure 3 This is an exploded view of the knife handle of the utility model;

[0034] Figure 4 This is a schematic diagram of a positioning plate according to a second embodiment of the present utility model.

[0035] In the figure: 1-processing axis, 2-positioning plate, 3-tool handle, 11-tapered hole, 12-second boss, 21-round hole, 22-positioning key, 23-radial slider, 24-radial groove, 31-tool handle mounting part, 32-first boss, 33-third boss, 34-tool clamping part, 35-tool mounting part, 36-screw hole, 37-positioning adjustment block, 38-vertical groove, 39-radial through hole, 40-positioning key groove. DETAILED DESCRIPTION

[0036] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0037] Embodiment 1

[0038] like Figures 1 to 4 As shown, an adjustable turning tool holder fixing structure for a machining axis includes a machining axis 1 and a tool holder 3. One end of the tool holder 3 is set as a tool holder mounting portion 31. The tool holder mounting portion 31 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 axis 11. The tool holder mounting portion 31 of the tool holder 3 cooperates with the machining axis 1 through the tapered hole 11. The other end of the tool holder 3 is set as a tool mounting portion 35. The tool is mounted on the tool holder 3 through the tool mounting portion 35.

[0039] A positioning disk 2 is detachably connected to the end of the machining shaft 1. A positioning key 22 is provided on the side of the positioning disk 2 away from the machining shaft 1. The positioning key 22 is set to a V-shaped key or an inverted trapezoidal key. The inclined surfaces on both sides of the positioning key 22 are symmetrically arranged with respect to the center line of the positioning disk 2. The arrangement of the positioning key 22 does not require changes to the structure of the machining shaft 1 itself. By utilizing the detachably connected positioning disk 2, the machining shaft 1 and the tool handle 3 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.

[0040] A connecting portion is provided between the tool holder mounting portion 31 and the tool mounting portion 35 of the utility model, at least one screw hole 36 is provided on the side wall of the connecting portion, a positioning adjustment block 37 is sleeved on the connecting portion, at least one radial through hole 39 is provided on the positioning adjustment block 37, the positioning adjustment block 37 is fixed to the connecting portion by screws, the diameter of the radial through hole 39 is slightly larger than the diameter of the screws, the arrangement of the above structure does not affect the connection between the tool holder 3 and the machining shaft 1 and the connection between the tool and the tool holder 3, the original turning connection structure of the tool holder 3 is retained, so that the tool holder 3 can still be connected to the original lathe machining shaft.

[0041] Specifically, a positioning key groove 40 is provided on the side wall of the positioning adjustment block 37. The positioning key groove 40 is set to a V-shaped key groove or an inverted trapezoidal key groove. The two inclined surfaces of the positioning key groove 40 are symmetrically arranged with respect to the center line of the positioning adjustment block 37. The two inclined surface angles of the positioning key groove 40 are equal to the two inclined surface angles of the positioning key 22. When the tool handle 3 is matched with the processing axis 1, the positioning key 22 can be inserted into the positioning key groove 40.

[0042] Since the diameter of the radial through hole 39 of the utility model is slightly larger than the diameter of the screw, the positioning adjustment block 37 can be fine-tuned in the circumferential or axial direction of the connecting portion, which is equivalent to adjusting the position of the positioning key groove 40. Combined with the V-shaped or inverted trapezoidal positioning key groove 40 and the positioning key 22, the positioning gap of the traditional positioning key 22 between the tool handle 3 and the processing axis 1 is eliminated. When the force on the tool changes, the vibration caused by the positioning gap is avoided, thereby improving the processing accuracy and surface quality.

[0043] The connecting portion specifically includes a first boss 32, which is a frustum. The diameter of the first boss 32 is greater than the maximum diameter of the tool handle mounting portion 31. The first boss 32 is arranged at the end of the tool handle mounting portion 31 away from the processing axis 1. The screw hole 36 is arranged on the side wall of the first boss 32. A matching hole is provided at the center of the positioning adjustment block 37. The diameter of the matching hole is equal to the diameter of the first boss 32. The positioning adjustment block 37 is sleeved on the first boss 32 through the matching hole.

[0044] A second boss 12 is provided at the end of the central tapered hole 11 at the end of the machining shaft 1. The second boss 12 protrudes from the end of the machining shaft 1. When the tool handle 3 is matched with the machining shaft 1, the end of the second boss 12 can abut against the end surface of the first boss 32. The tool handle mounting portion 31 of the tool handle 3 is matched with the machining shaft 1 through the tapered hole 11, so that double positioning can be achieved between the tool handle 3 and the machining shaft 1.

[0045] A circular hole 21 is provided in the center of the positioning disk 2, and the diameter of the circular hole 21 is larger than the outer diameter of the second boss 12. When the positioning disk 2 is connected to the end of the processing shaft 1, it will be sleeved on the second boss 12 through the circular hole 21, and the second boss 12 protrudes from the end face of the positioning disk 2, ensuring that the end of the second boss 12 can abut against the end face of the first boss 32.

[0046] The utility model has at least one positioning key slot 40 , and a plurality of positioning key slots 40 are evenly distributed around the center line of the positioning adjustment block 37 , and the number of the positioning key slots 40 corresponds to the number of the positioning keys 22 .

[0047] At least one vertical slot 38 is provided on the side wall of the positioning adjustment block 37, and a radial through hole 39 is provided at the bottom of the vertical slot 38. The width of the vertical slot 38 is greater than the size of the screw head to ensure that the screw head can extend into the vertical slot 38. Specifically, the vertical slot 38 and the positioning key slot 40 are arranged alternately.

[0048] A third boss 33 is preferably provided between the first boss 32 and the tool mounting portion 35. The diameter of the third boss 33 is larger than that of the first boss 32. The positioning adjustment block 37 can be placed on the third boss 33 when not fastened by screws. A tool clamping portion 34 is provided on the third boss 33. The tool clamping portion 34 is configured as a trapezoidal annular groove structure to facilitate the tool clamp to clamp the tool handle 3.

[0049] Embodiment 2:

[0050] like Figure 4 As shown, the specific structure of this embodiment is that a radial groove 24 is provided on the end face of the positioning disk 2 away from the processing axis 1, and the radial groove 24 runs through the side wall of the positioning disk 2. A radial slider 23 slides in the radial groove 24, and a positioning key 22 is provided on the end face of the radial slider 23 away from the positioning disk 2. When the tool holder 3 is matched with the processing axis 1, one end of the positioning key 22 is inserted into the positioning key groove 40. At this time, the other end of the positioning key 22 is connected to the radial groove 24 through the radial slider 23. Since a turning tool holder is installed at this time and turning processing is to be performed, the workpiece rotates, and the processing axis does not rotate, which does not affect the connection between the positioning key and the positioning key groove.

[0051] 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 turning tool holder fixing structure for a machining axis, characterized in that: It comprises a processing shaft (1) and a tool handle (3), wherein one end of the tool handle (3) is provided as a tool handle mounting portion (31), and the other end of the tool handle (3) is provided as a tool mounting portion (35), and the tool handle (3) cooperates with the processing shaft (1) via the tool handle mounting portion (31); The end of the processing shaft (1) is detachably connected to a positioning disk (2), and a positioning key (22) is provided on the side of the positioning disk (2) away from the processing shaft (1), and the positioning key (22) is configured as a V-shaped key or an inverted trapezoidal key, and the inclined surfaces on both sides of the positioning key (22) are symmetrically arranged with the center line of the positioning disk (2) as a reference; A connecting portion is provided between the tool handle mounting portion (31) and the tool mounting portion (35), at least one screw hole (36) is provided on the side wall of the connecting portion, a positioning adjustment block (37) is sleeved on the connecting portion, at least one radial through hole (39) is provided on the positioning adjustment block (37), the positioning adjustment block (37) is fixed to the connecting portion by means of screws, and the diameter of the radial through hole (39) is slightly larger than the diameter of the screw; A positioning keyway (40) is provided on the side wall of the positioning adjustment block (37); the positioning keyway (40) is configured as a V-shaped keyway or an inverted trapezoidal keyway; two inclined surfaces of the positioning keyway (40) are symmetrically arranged with the center line of the positioning adjustment block (37) as a reference; when the tool handle (3) is matched with the processing shaft (1), the positioning key (22) can be inserted into the positioning keyway (40).

2. The adjustable turning tool holder fixing structure for a machining axis according to claim 1, characterized in that: The two inclined surface angles of the positioning key groove (40) are equal to the two inclined surface angles of the positioning key (22).

3. The adjustable turning tool holder fixing structure for a machining axis according to claim 1, characterized in that: The connecting portion comprises a first boss (32), the first boss (32) being arranged at an end of the tool handle mounting portion (31) away from the processing axis (1), and the screw hole (36) being arranged on a side wall of the first boss (32); A matching hole is provided at the center of the positioning adjustment block (37), the diameter of the matching hole is equal to the diameter of the first boss (32), and the positioning adjustment block (37) is sleeved on the first boss (32) through the matching hole.

4. The adjustable turning tool holder fixing structure for a machining axis according to claim 3, characterized in that: A tapered hole (11) is provided at the center of the end of the processing shaft (1), and a shank mounting portion (31) of the shank (3) 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 (3) is matched with the processing shaft (1), the end of the second boss (12) can abut against the end surface of the first boss (32).

5. The adjustable turning tool holder fixing structure for a machining axis according to claim 4, characterized in that: A circular hole (21) is provided at the center of the positioning plate (2), and the diameter of the circular hole (21) is larger than the outer diameter of the second boss (12); When the positioning disk (2) is connected to the end of the processing shaft (1), the second boss (12) protrudes from the end surface of the positioning disk (2).

6. The adjustable turning tool holder fixing structure for a machining axis according to claim 1, characterized in that: The positioning key groove (40) is provided with at least one, and a plurality of the positioning key grooves (40) are evenly distributed around the circumference of the center line of the positioning adjustment block (37); The number of the positioning key slots (40) corresponds to the number of the positioning keys (22).

7. The adjustable turning tool holder fixing structure for a machining axis according to claim 6, characterized in that: At least one vertical groove (38) is provided on the side wall of the positioning adjustment block (37), and the radial through hole (39) is arranged at the bottom of the vertical groove (38).

8. The adjustable turning tool holder fixing structure for a machining axis according to claim 7, characterized in that: The vertical grooves (38) and the positioning key grooves (40) are arranged alternately.

9. The adjustable turning tool holder fixing structure for a machining axis according to claim 1, characterized in that: A radial groove (24) is provided on the end surface of the positioning disk (2) away from the processing axis (1), the radial groove (24) penetrates the side wall of the positioning disk (2), a radial slider (23) slides in the radial groove (24), and the positioning key (22) is provided on the end surface of the radial slider (23) away from the positioning disk (2).

10. The adjustable turning tool holder fixing structure for a machining axis according to claim 3, characterized in that: A third boss (33) is provided between the first boss (32) and the tool mounting portion (35), and the diameter of the third boss (33) is greater than the diameter of the first boss (32); The third boss (33) is provided with a knife clamping portion (34), and the knife clamping portion (34) is configured as a trapezoidal annular groove structure.

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