CN108927692B - Dynamic balance knife handle - Google Patents
Dynamic balance knife handle Download PDFInfo
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- CN108927692B CN108927692B CN201811153593.XA CN201811153593A CN108927692B CN 108927692 B CN108927692 B CN 108927692B CN 201811153593 A CN201811153593 A CN 201811153593A CN 108927692 B CN108927692 B CN 108927692B
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- dynamic balance
- ring
- handle
- side face
- ring body
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- 230000004323 axial length Effects 0.000 claims description 9
- 238000003754 machining Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
Abstract
The invention discloses a dynamic balance cutter handle, relates to the technical field of machine tool machining, and aims to solve the technical problems that the machining precision is poor and the service life of the cutter handle is short due to the fact that rotation unbalance easily occurs after the existing cutter handle is connected with a cutter head. The invention relates to a dynamic balance knife handle, which comprises: a knife handle and a dynamic balance ring arranged on the knife handle; wherein, dynamic balance ring includes: the ring body is provided with an inner side face and an outer side face which are opposite, and the inner side face is used for enclosing a mounting hole in the middle of the ring body; the outer side face is provided with a plurality of weight ports, and the weight ports are distributed along the circumferential direction of the outer side face; wherein, the handle of a knife includes: the mounting hole is sleeved on the cutter handle main body; one end of the knife handle main body, which is close to the dynamic balance ring, is provided with a knife head installation part, and the other end of the knife handle main body is provided with an installation shaft connected with a machine tool.
Description
Technical Field
The invention relates to the technical field of machine tool machining, in particular to a dynamic balance tool handle.
Background
The tool handle is used for connecting the machine tool spindle and the cutterhead, and the structure of the tool handle can influence the dynamic balance of the tool handle in the working process, so that the machining precision of the cutterhead connected with the tool handle is influenced.
The inventor discovers that in the cutter handle structure provided by the prior art, the phenomenon of unbalanced rotation can occur when the main shaft drives the cutter handle to rotate, so that after the cutter head is connected with the cutter handle, the radial runout and the end surface runout of the cutter head are large, the machining precision is influenced, and the service life of the cutter handle is also influenced.
Therefore, how to provide a dynamic balance tool handle, which can effectively ensure that the tool handle and the cutter head keep good balance in the rotation process, has become a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a dynamic balance cutter handle, which solves the technical problems that the machining precision is poor and the service life of the cutter handle is shorter due to the fact that the rotation unbalance easily occurs after the existing cutter handle is connected with a cutter head.
The invention provides a dynamic balance knife handle, comprising: a knife handle and a dynamic balance ring arranged on the knife handle; the dynamic balance ring includes: the ring body is provided with an inner side face and an outer side face which are opposite, and the inner side face is used for enclosing a mounting hole in the middle of the ring body; the outer side face is provided with a plurality of weight ports, and the weight ports are distributed along the circumferential direction of the outer side face; the shank includes: the mounting hole is sleeved on the cutter handle main body; the cutter head mounting part is arranged at one end, close to the dynamic balance ring, of the cutter handle main body, and the mounting shaft connected with the machine tool is arranged at the other end of the cutter handle main body.
In practical application, in the dynamic balance knife handle provided by the invention, the knife disc mounting part comprises: the annular tray is provided with a circular lock column at the center and a locking hole; the cutter head is sleeved and fixed on the circular lock column and is fixed through the locking hole, and the circular lock column can be used for positioning the cutter head.
In the dynamic balance knife handle provided by the invention, a plurality of locking holes are formed, and the locking holes are uniformly distributed at intervals along the circumferential direction of the annular tray.
In particular, in the dynamic balance knife handle provided by the invention, the dynamic balance ring is sleeved on the knife handle main body and is fixed with the annular tray through jackscrews.
In the dynamic balance knife handle provided by the invention, the end, connected with the machine tool, of the mounting shaft is provided with the internal threaded hole, and the blind rivet is mounted at the internal threaded hole.
In practical application, in the dynamic balance knife handle provided by the invention, a plurality of weight ports are uniformly distributed at intervals along the circumferential direction of the outer side surface of the ring body.
In the dynamic balance knife handle provided by the invention, the dynamic balance knife handle further comprises: and the adjusting device is arranged in the weight hole.
Specifically, in the dynamic balance knife handle provided by the invention, the adjusting device is of a columnar structure; the columnar structure is provided with external threads and is used for being matched with the internal threads of the weight ports.
Further, in the dynamic balance knife handle provided by the invention, the aperture of the weight hole meets the following formula: d=d+l+w-7.964; wherein D represents the aperture of the weight hole, D represents the outer diameter of the ring body, L represents the axial length of the ring body, and W represents the ring width of the ring body.
Compared with the prior art, the dynamic balance knife handle has the following advantages:
the dynamic balance knife handle provided by the invention comprises: a knife handle and a dynamic balance ring arranged on the knife handle; wherein, dynamic balance ring includes: the ring body is provided with an inner side face and an outer side face which are opposite, and the inner side face is used for enclosing a mounting hole in the middle of the ring body; the outer side face is provided with a plurality of weight ports, and the weight ports are distributed along the circumferential direction of the outer side face; wherein, the handle of a knife includes: the mounting hole is sleeved on the cutter handle main body; one end of the knife handle main body, which is close to the dynamic balance ring, is provided with a knife head installation part, and the other end of the knife handle main body is provided with an installation shaft connected with a machine tool. According to analysis, in the dynamic balance knife handle provided by the invention, the dynamic balance ring is arranged on the knife handle, and the object is arranged in the weight hole of the dynamic balance ring so as to adjust the spatial position of the integral center of gravity formed by the knife handle, the knife disc and the dynamic balance ring, so that the integral center of gravity is kept on the rotation axis of the knife handle, the balance state in the rotation process is maintained, the knife handle and the knife disc are effectively ensured to be well balanced in the rotation process, and the machining precision is further effectively improved; and moreover, the occurrence of mechanical faults can be reduced, and the service life of the cutter handle is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a dynamic balance knife handle according to an embodiment of the present invention;
FIG. 2 is an exploded view of a dynamic balance tool handle according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a dynamic balance tool handle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an adjusting device in a dynamic balance knife handle according to an embodiment of the present invention.
In the figure: 1-a knife handle; 11-a shank body; 12-a cutterhead mounting part; 13-mounting a shaft; 14-an internal threaded hole; 121-an annular tray; 122-a round lock cylinder; 1211-a locking hole; 2-dynamic balance ring; 21-ring body; 211-inner side; 212-outer side; 22-mounting holes; 23-weight ports; 3-blind rivet; 4-adjusting means.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
FIG. 1 is a schematic diagram of a dynamic balance knife handle according to an embodiment of the present invention; FIG. 2 is an exploded view of a dynamic balance tool handle according to an embodiment of the present invention; fig. 3 is a schematic cross-sectional structure of a dynamic balance knife handle according to an embodiment of the present invention.
As shown in fig. 1-3, an embodiment of the present invention provides a dynamic balance tool shank, including: a knife handle 1 and a dynamic balance ring 2 arranged on the knife handle 1; the dynamic balance ring 2 includes: the ring body 21, the ring body 21 has an inner side surface 211 and an outer side surface 212 which are opposite, and the inner side surface 211 is used for enclosing a mounting hole 22 in the middle of the ring body 21; the outer side surface 212 is provided with a plurality of weight ports 23, and the plurality of weight ports 23 are distributed along the circumferential direction of the outer side surface 212; the shank 1 includes: the tool shank main body 11, the mounting hole 22 is sleeved on the tool shank main body 11; one end of the cutter handle main body 11, which is close to the dynamic balance ring 2, is provided with a cutter head mounting part 12, and the other end of the cutter handle main body 11 is provided with a mounting shaft 13 connected with a machine tool.
Compared with the prior art, the dynamic balance knife handle provided by the embodiment of the invention has the following advantages:
in the dynamic balance knife handle provided by the embodiment of the invention, as shown in fig. 1-3, the dynamic balance knife handle comprises: a tool shank 1 and a dynamic balance ring 2 arranged on the tool shank 1; wherein, dynamic balance ring 2 includes: the ring body 21, the ring body 21 has an inner side surface 211 and an outer side surface 212 which are opposite, and the inner side surface 211 is used for enclosing a mounting hole 22 in the middle of the ring body 21; the outer side surface 212 is provided with a plurality of weight ports 23, and the plurality of weight ports 23 are distributed along the circumferential direction of the outer side surface 212; wherein the shank 1 comprises: the tool shank main body 11, the mounting hole 22 is sleeved on the tool shank main body 11; one end of the cutter handle main body 11, which is close to the dynamic balance ring 2, is provided with a cutter head mounting part 12, and the other end of the cutter handle main body 11 is provided with a mounting shaft 13 connected with a machine tool. From analysis, in the dynamic balance knife handle provided by the embodiment of the invention, the dynamic balance ring 2 is arranged on the knife handle 1, and objects are arranged in the weight balance hole 23 of the dynamic balance ring 2 to adjust the space position of the gravity center of the whole formed by the knife handle 1, the knife disc and the dynamic balance ring 2 so as to keep the whole on the rotation axis of the knife handle 1, thereby being beneficial to maintaining the balance state in the rotation process, effectively ensuring that the knife handle 1 and the knife disc keep good balance in the rotation process, and further effectively improving the processing precision; and moreover, the occurrence of mechanical faults can be reduced, and the service life of the cutter handle is effectively prolonged.
In practical application, as shown in fig. 2, in the dynamic balance tool holder provided in the embodiment of the present invention, the cutter head mounting portion 12 may include: an annular tray 121, a circular lock column 122 is arranged in the center of the annular tray 121, and a locking hole 1211 is arranged on the annular tray 121; when assembled, the cutterhead is sleeved and fixed on the circular lock cylinder 122, and the circular lock cylinder 122 can be used for positioning the cutterhead through the locking holes 1211.
In the dynamic balance tool shank provided in the embodiment of the present invention, a plurality of locking holes 1211 may be provided, and the plurality of locking holes 1211 are preferably uniformly distributed at intervals along the circumferential direction of the annular tray 121, so as to well ensure the installation stability of the cutterhead.
Specifically, as shown in fig. 1, in the dynamic balance tool handle provided in the embodiment of the present invention, the dynamic balance ring 2 is sleeved on the tool handle body 11 and is fixed with the annular tray 121 through a jackscrew.
It should be noted that, in the dynamic balance tool handle provided by the embodiment of the invention, for example
As shown in fig. 3, in order to effectively secure the strength of the tool shank 1, the tool shank body 11, the tool head mounting portion 12, and the mounting shaft 13 in the tool shank 1 are preferably integrally formed.
Further, as shown in fig. 1 to 3, in the dynamic balance tool shank provided in the embodiment of the present invention, an internal threaded hole 14 is provided at one end of the mounting shaft 13 connected to the machine tool, and the blind rivet 3 is mounted at the internal threaded hole 14.
In practical application, as shown in fig. 2, in the dynamic balance tool handle provided in the embodiment of the present invention, the plurality of weight ports 23 are preferably uniformly distributed at intervals along the circumferential direction of the outer side 212 of the ring body 21; specifically, the number of the weight ports 23 may be 15-30, and the distribution is specifically described by using 20 weight ports 23, and the central angle subtended between two adjacent weight ports 23 is 20 °.
Fig. 4 is a schematic structural diagram of an adjusting device in a dynamic balance knife handle according to an embodiment of the present invention.
As shown in fig. 4, the dynamic balance tool handle according to the embodiment of the present invention may further include: an adjusting device 4, which adjusting device 4 is mounted in the weight port 23, so as to be realized by the adjusting device 4.
Specifically, in the dynamic balance tool shank provided in the embodiment of the present invention, the adjusting device 4 may have a columnar structure, and the columnar structure has an external thread for matching with an internal thread of the weight hole 23. The internal thread may be single-line thread and the external thread single-line thread; or the internal thread is a multi-start thread and the external thread is a multi-start thread; when multi-thread threads are used, the rapid adjustment of the columnar structure can be improved. The end of the columnar structure is provided with a driving groove, which can be a straight groove or a cross groove, and in this embodiment, the driving groove is taken as an example. The adjusting device 4 may also be a screw, a bolt or a stud.
Further, in the dynamic balance knife handle provided by the embodiment of the invention, the aperture of the weight hole 23 is linearly related to the outer diameter of the ring body 21, the axial length of the ring body 21 and the ring width of the ring body 21, and through experimental measurement, when the aperture is linearly related, the corresponding adjusting device 4 is conveniently configured, and quick balance adjustment is facilitated.
Specifically, the aperture of the weight ports 23 satisfies the following formula:
d＝xD+yL+zW+C，
wherein D represents the aperture of the weight hole 23, D represents the outer diameter of the ring body 21, L represents the axial length of the ring body 21, and W represents the ring width of the ring body 21; c represents a constant; x, y, z each represent a correlation coefficient.
In this embodiment, the aperture of the weight ports 23 satisfies the following formula: d=d+l+w-7.964; where D represents the aperture of the weight hole 23, D represents the outer diameter of the ring body 21, L represents the axial length of the ring body 21, and W represents the ring width of the ring body 21.
In practical application, in the dynamic balance knife handle provided by the embodiment of the invention, the axial section of the ring body 21 is rectangular, a certain diameter of the ring body 21 is positioned on the axial section, and the axial section is perpendicular to the ring surface of the ring body 21. The opposite annular faces of the ring 21 are parallel to each other. The inner surface 211 and the outer surface 212 of the ring body 21 are cylindrical surfaces.
It should be noted that, in this embodiment, the cross-sectional shape of the ring body 21 may also be a right trapezoid or the like.
In an alternative to this embodiment, a chamfer is provided between the annulus of ring 21 and outer side 212.
In the dynamic balance knife handle provided by the embodiment of the invention, the ring body 21 can comprise a plurality of sub-rings which are nested together, and the weight of the whole ring body 21 is conveniently increased or reduced through the plurality of sub-rings, so that the balance can be conveniently adjusted.
Specifically, in this embodiment, the number of the sub-rings is taken as two as an example, and for convenience of distinguishing the two sub-rings, the two sub-rings are respectively referred to as: the first sub-ring and the second sub-ring, the inner diameter of the first sub-ring is larger than or equal to the outer diameter of the second sub-ring, so that the first sub-ring is nested outside the second sub-ring; when in use, the second sub-ring is sleeved on the knife handle 1; the first sub-ring and the second sub-ring are fixedly connected through the adjusting devices 4 arranged in the two symmetrical weight holes 23 on the ring body 21. Since the ring body 21 is divided into a first sub-ring and a second sub-ring, the weight ports 23 are correspondingly divided into two half-ports, one half-port being located on the first sub-ring and the other half-port being located on the second sub-ring.
It should be noted that, the method for adjusting balance and reducing or eliminating rotation unbalance by the dynamic balance ring 2 is as follows:
connecting a transducer and a cutter head (or a grinding head) to the cutter handle 1, and then mounting the dynamic balance ring 2 on the cutter handle main body 11 of the cutter handle 1 to form an assembly body, and measuring the gravity center of the assembly body through a dynamic balance instrument; when the rotation is unbalanced, the adjusting device 4 is arranged in the corresponding weight hole 23, the test is carried out again, and the steps are repeated until the gravity center of the assembled body is kept at the axis of the cutter handle 1.
In the dynamic balance knife handle provided by the embodiment of the invention, the dynamic balance ring 2 is arranged on the knife handle 1, and an object is arranged in the weight hole 23 of the dynamic balance ring 2 to adjust the spatial position of the gravity center of the whole formed by the knife handle 1, the knife disc and the dynamic balance ring 2 so as to keep the whole on the rotation axis of the knife handle 1, thereby being beneficial to maintaining the balance state in the rotation process, effectively ensuring that the knife handle 1 and the knife disc keep good balance in the rotation process, and further effectively improving the processing precision; and moreover, the occurrence of mechanical faults can be reduced, and the service life of the cutter handle is effectively prolonged.
The embodiment of the invention further provides a design method of the dynamic balance ring, which comprises the following steps:
wherein D represents the aperture of the weight hole, D1 represents the outer diameter of the ring body, D2 represents the inner diameter of the ring body, L represents the axial length of the ring body, and W represents the ring width of the ring body.
S01, determining the outer diameter D1 of a ring body, wherein the outer diameter D1 of the ring body is equal to 1.1-1.3 times of the outer diameter of the cutter handle;
s02, determining the inner diameter D2 of the ring body, wherein the inner diameter D2 of the ring body is in clearance fit with the outer diameter of the cutter handle, and the tolerance grade is H8 or H10;
step S03, determining the width 2w=d1-D2 of the ring body;
s04, determining the axial length L of the ring body, wherein the axial length of the ring body is equal to 0.10-0.13 times of the axial length of the cutter handle;
step S05, determining the aperture d of the weight port, d=0.5l+0.02d+0.2w+0.1.
The embodiment of the invention further provides a method for adjusting the center of gravity of the cutter handle/cutter head by using the dynamic balance ring, which comprises the following steps:
the number of the side weight ports of the dynamic balance ring is 24 or 30 or 36; the adjusting device inserted into the weight hole has five specifications, and the weight can be 0.1g, 0.2g, 0.3g, 0.4g and 0.5g respectively.
Taking a dynamic balance ring with 30 weight ports as an example, the specific adjustment steps are as follows:
s10, installing a dynamic balance ring sleeve on a knife handle in clearance fit;
step S20, installing 4 0.3g adjusting devices in the balance weight hole, and installing one adjusting device at intervals of 90 degrees, wherein the adjusting devices are in clearance fit with the cutter handle, so that the adjusting devices are propped against the cutter handle and also play a role in fixing the dynamic balance ring on the cutter handle;
step S30, testing the gravity center of the cutter handle assembly/cutter head assembly by using a gravity center tester, so that the first-time tested bias position is a first bias position, and the first-time tested bias weight is a first bias weight;
step S40, according to the first deflection weight at the first deflection position, if the first deflection position is at one position of the 4 adjusting devices installed in the step S20, the adjusting device corresponding to the first deflection position is removed, and a gravity center tester is used for testing the gravity center of the cutter handle assembly/cutter head assembly, so that the deflection weight measured in the second test is the second deflection weight; according to the second weight, correspondingly assembling or disassembling the adjusting devices with five weight specifications;
step S50, according to the measured weight bias at the first weight bias position, if the first weight bias position is not at any one of the 4 adjusting devices installed in the step S20, installing an adjusting device with corresponding specification opposite to the first weight bias position;
step S60, repeating step S40 and step S50 until the center of gravity of the cutter handle assembly/cutter head assembly axially coincides with the cutter handle.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A dynamic balancing tool shank, comprising: a knife handle and a dynamic balance ring arranged on the knife handle;
the dynamic balance ring includes: the ring body is provided with an inner side face and an outer side face which are opposite, and the inner side face is used for enclosing a mounting hole in the middle of the ring body; the outer side face is provided with a plurality of weight ports, and the weight ports are distributed along the circumferential direction of the outer side face;
the shank includes: the mounting hole is sleeved on the cutter handle main body; a cutter head mounting part is arranged at one end, close to the dynamic balance ring, of the cutter handle main body, and a mounting shaft connected with a machine tool is arranged at the other end of the cutter handle main body;
the cutterhead mounting portion includes: the annular tray is provided with a circular lock column at the center and a locking hole;
the circular lock column is used for sleeving the cutterhead through the locking hole, and the circular lock column can be used for positioning the cutterhead;
the aperture of the weight port satisfies the following formula: d=d+l+w-7.964; wherein D represents the aperture of the weight hole, D represents the outer diameter of the ring body, L represents the axial length of the ring body, and W represents the ring width of the ring body;
the ring body includes a plurality of nested subrings.
2. The dynamic balance handle of claim 1, wherein a plurality of the locking holes are provided, and the plurality of locking holes are uniformly spaced apart along the circumferential direction of the annular tray.
3. The dynamic balance handle of claim 1, wherein the dynamic balance ring is sleeved on the handle body and is fixed with the annular tray through a jackscrew.
4. A dynamic balance tool shank according to any one of claims 1 to 3, wherein an internally threaded bore is provided at the end of the mounting shaft to which the machine tool is attached, and a blind rivet is mounted at the internally threaded bore.
5. The dynamic balancing tool shank according to claim 1, wherein a plurality of the weight ports are uniformly spaced along a circumferential direction of the outer side surface of the ring body.
6. The dynamic balancing shank according to claim 1 or 5, further comprising: and the adjusting device is arranged in the weight hole.
7. The dynamic balance handle of claim 6, wherein the adjustment device is of a columnar structure; the columnar structure is provided with external threads and is used for being matched with the internal threads of the weight ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153593.XA CN108927692B (en) | 2018-09-29 | 2018-09-29 | Dynamic balance knife handle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153593.XA CN108927692B (en) | 2018-09-29 | 2018-09-29 | Dynamic balance knife handle |
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| CN108927692A CN108927692A (en) | 2018-12-04 |
| CN108927692B true CN108927692B (en) | 2024-03-29 |
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| CN206869504U (en) * | 2017-07-03 | 2018-01-12 | 适新科技（苏州）有限公司 | Clamp system and turning machine |
| CN207479700U (en) * | 2017-11-29 | 2018-06-12 | 威海威硬工具股份有限公司 | A kind of dynamic balancing high-speed cutter |
| CN208913664U (en) * | 2018-09-29 | 2019-05-31 | 汇专绿色工具有限公司 | Dynamic balancing knife handle |
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| CN108927692A (en) | 2018-12-04 |
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