CN110899809B - Correcting device for controlling cutting amount of numerically controlled milling machine - Google Patents
Correcting device for controlling cutting amount of numerically controlled milling machine Download PDFInfo
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- CN110899809B CN110899809B CN201911417790.2A CN201911417790A CN110899809B CN 110899809 B CN110899809 B CN 110899809B CN 201911417790 A CN201911417790 A CN 201911417790A CN 110899809 B CN110899809 B CN 110899809B
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- sleeve
- groove
- reference shaft
- fixedly connected
- numerically controlled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/013—Control or regulation of feed movement
- B23Q15/02—Control or regulation of feed movement according to the instantaneous size and the required size of the workpiece acted upon
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a correcting device for controlling cutting quantity of a numerically controlled milling machine, which is characterized in that: the device comprises a cover pipe, a sleeve, a base and a reference shaft, wherein the base is fixedly arranged at the bottom of the sleeve, the reference shaft is fixedly arranged in the sleeve, the reference shaft is provided with a plurality of shaft sections with gradually reduced outer diameters along the axial direction of the reference shaft, and the cover pipe is sleeved between the sleeve and the reference shaft; the lamp holder is internally provided with a switch, the top wall of the sleeve is provided with a bulb, and the switch is electrically connected with the bulb; the pop-up structure comprises a support ring, a spring is fixedly connected to the bottom of the support ring, a limiting groove is formed in the side wall of the sleeve, a connecting rod is arranged in the limiting groove, a clamping block is fixedly connected to one end of the connecting rod, a pull buckle is fixedly connected to the other end of the connecting rod, a second spring is fixedly sleeved on the connecting rod, a clamping groove is formed in the side wall of the cover pipe, a rope is arranged on the side wall of the cover pipe, and.
Description
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a correcting device for controlling cutting quantity of a numerical control milling machine.
Background
The milling machine is a machine tool with wide application, and can process planes (horizontal planes and vertical planes), grooves (key grooves, T-shaped grooves, dovetail grooves and the like), tooth dividing parts (gears, spline shafts and chain wheels), spiral surfaces (threads and spiral grooves) and various curved surfaces on the milling machine. In addition, the method can be used for machining the surface and inner hole of the revolving body, cutting off the revolving body, and the like. When the milling machine works, a workpiece is arranged on a workbench or accessories such as an indexing head, the milling cutter rotates to move mainly, and the workpiece can obtain a required processing surface by the aid of the feeding motion of the workbench or the milling head. Since the multi-edge intermittent cutting is performed, the productivity of the milling machine is high. In short, a milling machine is a machine tool that can mill, drill, and bore a workpiece.
After a workpiece is machined by a milling machine, the machined workpiece is required to be measured to determine whether the cutting amount of the milling machine meets the requirement of machining or not and whether the cutting amount is enough to be corrected or not, related measuring and correcting tools are lacked in the existing production, and an improvement exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a correcting device for controlling cutting output of a numerically controlled milling machine, which is mainly used for solving the problem that the cutting output is inconvenient to measure by the existing cutting workpiece.
The invention is realized by the following technical scheme: the utility model provides a correcting unit for numerically controlled fraise machine control cutting volume which characterized in that: the device comprises a cover pipe, a sleeve, a base and a reference shaft, wherein the base is fixedly arranged at the bottom of the sleeve, the reference shaft is fixedly arranged in the sleeve, the reference shaft is provided with a plurality of shaft sections with gradually reduced outer diameters along the axial direction of the reference shaft, and the cover pipe is sleeved between the sleeve and the reference shaft; the LED lamp comprises a base, a light source and a light guide plate, and is characterized by further comprising a lighting structure and a popup structure, wherein the lighting structure comprises a lamp holder, limiting plates are hinged to two sides of the base in a damping rotating mode, the lamp holder is hinged between the limiting plates in a damping rotating mode, a switch is arranged in the lamp holder, a bulb is arranged on the top wall of the sleeve, and the switch is electrically connected with the bulb; the pop-up structure comprises a support ring, an annular groove is limited between the sleeve and the reference shaft, the support ring is positioned in the annular groove and sleeved outside the reference shaft, a spring is fixedly connected to the bottom of the support ring, the spring is fixedly connected with the sleeve, a limiting groove is formed in the side wall of the sleeve, a connecting rod is arranged in the limiting groove, a clamping block is fixedly connected to one end of the connecting rod, a pull buckle is fixedly connected to the other end of the connecting rod, a second spring is fixedly sleeved on the connecting rod, the second spring is fixedly connected with the side wall of the limiting groove, the pull buckle is tangent to the surface of the outer side of the sleeve, a sliding groove is formed between the limiting groove and the annular groove in a run-through mode, the clamping block is sleeved in the sliding groove in a sliding mode and extends into the annular groove, a clamping groove is formed in the side, the clamping block is clamped in the clamping groove, the support ring is in surface contact with the bottom of the cover tube, the spring is compressed, and a rope is arranged on the side wall of the cover tube and fixedly connected with the sleeve.
As a further improvement of the scheme, the two sides of the base are provided with first pin shafts, the two sides of the lamp holder are provided with second pin shafts, and the limiting plate is rotatably sleeved on the first pin shafts and the second pin shafts and is in interference fit.
As a further improvement of the above scheme, the limiting groove is a cylindrical groove, the connecting rod is provided with a circular baffle, the diameter of the circular baffle is smaller than that of the cylindrical groove, and the second spring is fixedly connected with the circular baffle.
As a further improvement of the above scheme, the fixture block is an arc-shaped block, the arc surface of the arc-shaped block is a quarter of an arc surface, the upper surface of the arc-shaped block is an arc surface, the lower surface of the arc-shaped block is a plane, and the arc-shaped block is partially exposed in the annular groove.
As a further improvement of the scheme, the springs are uniformly arranged at the bottom of the support ring, and the number of the springs is at least 2.
As a further improvement of the above scheme, the clamping groove is an annular groove, and the cross section of the clamping groove is rectangular.
As a further improvement of the scheme, the side wall of the sleeve is rotatably sleeved with a rotating seat, and a finger ring is rotatably arranged on the rotating seat.
As a further improvement of the scheme, the first fastening block is provided with a bearing, and the sleeve is embedded with a level gauge.
Compared with the prior art, the invention has the beneficial effects that:
1. the reference shaft is provided with a plurality of coaxially arranged shaft sections with gradually reduced outer diameters along the axial direction of the reference shaft, during specific measurement, a certain shaft section can be abutted against a cut workpiece, the cutting amount of the workpiece is compared with the measurement shaft section, and then the milling machine is corrected according to the comparison result, so that the whole process is simple and convenient, and the specification of various cutting amounts can be measured due to the fact that the plurality of shaft sections are arranged, and the practicability is high;
2. the lighting device is mainly used for measurement in a dim environment with insufficient light, and the limiting plate and the lamp holder rotate in a damping mode, so that the position of the lamp holder has great flexibility;
3. the cover pipe and the sleeve are designed to be popped out, the cover pipe can be popped out only by pulling the pull buckle during use, the cover pipe and the sleeve are provided with ropes, the cover pipe can be prevented from being lost, the cover pipe and the sleeve are fixed through the clamping block, and the connection form is reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a right side schematic view of the present invention;
FIG. 2 is a schematic view of the left side of the present invention;
FIG. 3 is a schematic view of the present invention with the cover tube removed;
FIG. 4 is a schematic cross-sectional view of the sleeve;
FIG. 5 is an enlarged partial schematic view taken at circle in FIG. 4;
FIG. 6 is a schematic structural view of the shroud;
FIG. 7 is a schematic view of a structure of engaging the cover tube with the latch;
the reference numerals are as follows:
a cover tube 1; a sleeve 2; a base 3; a reference axis 4; a lamp socket 5; a limiting plate 6; a switch 7; a bulb 8; a support ring 9; a spring 10; a limiting groove 11; a connecting rod 12; a latch 13; a tab 14; a second spring 15; a card slot 16; a baffle 17; a ring 18; a level gauge 19; a cord 20.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The technical scheme of the invention is further explained by combining the attached drawings.
A correcting device for controlling a cutting amount of a numerically controlled milling machine as shown in fig. 1, 2 and 3 includes a cover tube 1, a sleeve 2, a base 3 and a reference shaft 4, both ends of the sleeve 2 are opened, the base 3 is fixedly provided at the bottom of the sleeve 2, thereby covering an opened end of a lower side of the sleeve 2, the reference shaft 4 is fixedly provided in the sleeve 2, wherein the reference shaft 4 is coaxially provided with the sleeve 2, and an upper end of the reference shaft 4 extends outward through the opened end of an upper side of the sleeve 2, the reference shaft 4 is provided with a plurality of shaft segments which are coaxially provided and whose outer diameters are gradually reduced from bottom to top in an axial direction thereof.
During specific measurement, a certain shaft section can be abutted against a cut workpiece, the cutting amount of the workpiece is compared with the measured shaft section, and the milling machine is corrected according to the comparison result. In practical application, the number of the shaft sections, the length of the shaft sections and the outer diameter of the shaft sections can be set according to the specification of the cutting amount used by the milling machine, which is not limited by the invention.
As shown in fig. 2 and 6, the lower end of the cover tube 1 is open, the cover tube 1 is sleeved between the sleeve 2 and the reference shaft 4, the reference shaft 4 is located in the cover tube 1, the cover tube 1 can protect the reference shaft 4, and the influence of corrosion such as dust on the reference shaft 4 on measurement and final correction is avoided.
As shown in fig. 2 and 4, the lighting device further comprises a lighting device and a popping device, the lighting device comprises a lamp holder 5, two sides of the base 3 are hinged with limiting plates 6 in a damping rotating manner, the limiting plates 6 are hinged with the lamp holder 5 in a damping rotating manner, the specific form is that two sides of the base 3 are provided with first pin shafts, two sides of the lamp holder 5 are provided with second pin shafts, the limiting plates 6 are rotatably sleeved on the first pin shafts and the second pin shafts and are in interference fit, so that the rotation of the limiting plates 6 and the rotation of the lamp holder 5 have damping effects, a switch 7 is arranged in the lamp holder 5, a bulb 8 is arranged on the top wall of the sleeve 2, and the switch 7 is; the bulb 8 that sets up in this embodiment mainly used is the measurement under the dim environment of insufficient light, and is the damping rotation between limiting plate 6 and the lamp stand 5 for the position of lamp stand 5 has had very big flexibility.
The pop-up device shown in fig. 4, 5 and 6 includes a support ring 9, an annular groove is defined between the sleeve 2 and the reference shaft 4, the annular groove is formed in the sleeve 2 from top to bottom, the support ring 9 is sleeved in the annular groove, a spring 10 is fixedly connected to the bottom of the support ring 9, and the number of the springs 10 is at least 2 and is uniformly arranged at the bottom of the support ring 9. The spring 10 is fixedly connected with the sleeve 2, as shown in the figure, a limiting groove 11 is formed in the side wall of the sleeve 2, the limiting groove 11 is a cylindrical groove, a connecting rod 12 is arranged in the limiting groove 11, one end of the connecting rod 12 is fixedly connected with a clamping block 13, the other end of the connecting rod is fixedly connected with a pull buckle 14, a circular baffle 17 is arranged on the connecting rod 12, the diameter of the circular baffle 17 is smaller than that of the cylindrical groove, a second spring 15 is sleeved on the connecting rod 12, one end of the second spring 15 is fixedly connected with the circular baffle 17, the other end of the second spring is fixedly connected with the side wall of the limiting groove 11, the pull buckle 14 is arranged outside the sleeve 2 and is tangent to the outer side surface of the sleeve 2, a sliding groove is formed between the limiting groove 11 and the annular groove in a penetrating manner, the clamping block 13 is slidably sleeved in the sliding groove and extends into the annular groove, a clamping groove, the upper surface of arc piece is the arcwall face, and the lower surface is the plane, and the arc piece only partially exposes in the ring channel, cup joints when the ring channel in cover pipe 1 bottom, and fixture block 13 joint is in draw-in groove 16, and draw-in groove 16 is annular rectangular channel, and support ring 9 and cover pipe 1 bottom surface contact make spring 10 compressed, and cover pipe 1 lateral wall is equipped with rope 20, rope 20 and sleeve 2 fixed connection.
When the reference shaft 4 needs to be used, the finger pulls the pull buckle 14 to move outwards, so that the clamping block 13 is separated from the clamping groove 16 in the cover tube 1, at the moment, under the restoring action of the spring 10, the cover tube 1 is vertically and upwards ejected, but the cover tube 1 is connected with the sleeve 2 through the rope 20, therefore, the cover pipe 1 can be pulled by the rope 20 after being ejected, the risk of losing is avoided, when the cover pipe 1 needs to be reset, the cover pipe 1 is sleeved in the annular groove, the bottom surface of the clamping block 13 is contacted with the arc surface of the clamping block firstly, and because only part of the arc block is exposed in the annular groove, so that the acting force of the cover tube 1 and the fixture block 13 can drive the fixture block 13 to move horizontally until the fixture block 13 is clamped in the clamping groove 16 under the acting force of the second spring 15, thereby realizing the fixation of the cover tube 1, in addition, the bulb 8 is arranged, the position of the lamp holder 5 has great flexibility, and the device can be used for measurement in dim environment with insufficient light.
Example 2
Example 2 is a further improvement over example 1.
As shown in fig. 3, the plurality of bulbs 8 are arranged at intervals in the circumferential direction around the axis of the sleeve 2, thereby obtaining a better lighting effect.
As shown in figure 2, the side wall of the sleeve 2 is rotatably sleeved with a rotating seat, the rotating seat is rotatably provided with a finger ring 18, and the finger ring 18 is convenient for carrying the device.
As shown in fig. 2 and 5, the side of the sleeve 2 is provided with a groove, a level gauge 19 is embedded in the groove, and the level gauge 19 is a common measuring tool for measuring small angles. In the mechanical industry and in instrument manufacturing, the device is used for measuring the inclination angle relative to the horizontal position, the flatness and the straightness of a guide rail of machine tool equipment, the horizontal position and the vertical position of equipment installation and the like. The appearance of the level gauge 19 can be divided into: a universal level gauge 19, a cylindrical level gauge 19, an integrated level gauge 19, a mini level gauge 19, a camera level gauge 19, a frame level gauge 19, a ruler level gauge 19; the fixing mode of the water level can be divided into: an adjustable level 19 and an adjustable level 19. After the level gauge 19 is provided, it is possible to more accurately correct the cut amount of the workpiece using the reference shaft 4.
As shown in fig. 6 and 7, the bottom of the cover tube 1 is a tapered surface, and the diameter of the tapered surface gradually decreases in the top-to-bottom direction, thereby facilitating the cover tube 1 to push the latch 13 away.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a correcting unit for numerically controlled fraise machine control cutting volume which characterized in that: the device comprises a cover pipe (1), a sleeve (2), a base (3) and a reference shaft (4), wherein the base (3) is fixedly arranged at the bottom of the sleeve (2), the reference shaft (4) is fixedly arranged in the sleeve (2), the reference shaft (4) is provided with a plurality of shaft sections with gradually reduced outer diameters along the axial direction of the reference shaft, and the cover pipe (1) is sleeved between the sleeve (2) and the reference shaft (4);
the LED lamp is characterized by further comprising an illumination structure and a pop-up structure, wherein the illumination structure comprises a lamp holder (5), limiting plates (6) are hinged to two sides of the base (3) in a damping rotating mode, the lamp holder (5) is hinged between the limiting plates (6) in a damping rotating mode, a switch (7) is arranged in the lamp holder (5), a bulb (8) is arranged on the top wall of the sleeve (2), and the switch (7) is electrically connected with the bulb (8);
the pop-up structure comprises a support ring (9), an annular groove is defined between the sleeve (2) and the reference shaft (4), the support ring (9) is located in the annular groove and sleeved outside the reference shaft (4), a spring (10) is fixedly connected to the bottom of the support ring (9), the spring (10) is fixedly connected with the sleeve (2), a limit groove (11) is formed in the side wall of the sleeve (2), a connecting rod (12) is arranged in the limit groove (11), a clamping block (13) is fixedly connected to one end of the connecting rod (12), a pull buckle (14) is fixedly connected to the other end of the connecting rod (12), a second spring (15) is fixedly connected to the side wall of the limit groove (11), the pull buckle (14) is tangent to the outer side surface of the sleeve (2), a sliding groove is formed in the limiting groove (11) and is formed in a penetrating manner between the annular grooves, the clamping block (13) is sleeved in the sliding groove in a sliding mode and extends into the annular groove, a clamping groove (16) is formed in the side wall of the cover pipe (1), when the bottom of the cover pipe (1) is sleeved in the annular groove, the clamping block (13) is clamped in the clamping groove (16), the support ring (9) is in surface contact with the bottom of the cover pipe (1) and enables the spring (10) to be compressed, a rope is arranged on the side wall of the cover pipe (1), and the rope is fixedly connected with the sleeve (2).
2. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the lamp holder is characterized in that first pin shafts are arranged on two sides of the base (3), second pin shafts are arranged on two sides of the lamp holder (5), and the limiting plate (6) is rotatably sleeved on the first pin shafts and the second pin shafts and is in interference fit.
3. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the limiting groove (11) is a cylindrical groove, a circular baffle (17) is arranged on the connecting rod (12), the diameter of the circular baffle (17) is smaller than that of the cylindrical groove, and the second spring (15) is fixedly connected with the circular baffle (17).
4. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the clamping block (13) is an arc-shaped block, the arc surface of the arc-shaped block is a quarter of arc surface, the upper surface of the arc-shaped block is an arc surface, the lower surface of the arc-shaped block is a plane, and the arc-shaped block is partially exposed in the annular groove.
5. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the springs (10) are uniformly arranged at the bottom of the support ring (9), and the number of the springs is at least 2.
6. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the clamping groove (16) is an annular groove, and the cross section of the clamping groove is rectangular.
7. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the side wall of the sleeve (2) is rotatably sleeved with a rotating seat, and a finger ring (18) is rotatably arranged on the rotating seat.
8. The numerically controlled fraise machine cutting amount control correction apparatus according to claim 1, wherein: the sleeve (2) is embedded with a level gauge (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417790.2A CN110899809B (en) | 2019-12-31 | 2019-12-31 | Correcting device for controlling cutting amount of numerically controlled milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417790.2A CN110899809B (en) | 2019-12-31 | 2019-12-31 | Correcting device for controlling cutting amount of numerically controlled milling machine |
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| Publication Number | Publication Date |
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| CN110899809A CN110899809A (en) | 2020-03-24 |
| CN110899809B true CN110899809B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911417790.2A Active CN110899809B (en) | 2019-12-31 | 2019-12-31 | Correcting device for controlling cutting amount of numerically controlled milling machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050759A (en) * | 1995-09-11 | 2000-04-18 | Black & Decker Inc. | Depth of cut mechanism |
| CN204843096U (en) * | 2015-07-21 | 2015-12-09 | 成都飞机工业（集团）有限责任公司 | Device of exactness is prepared in operation of check -up numerical control milling machine |
| CN207343867U (en) * | 2017-10-11 | 2018-05-11 | 安徽日威数控重机有限公司 | A kind of quasi- heart means for correcting of cutter for milling machines |
| CN207741731U (en) * | 2018-01-31 | 2018-08-17 | 扬州伟达机械有限公司 | One kind being used for the hexahedral verticality calibration-free device of milling |
| CN109454500A (en) * | 2017-12-18 | 2019-03-12 | 苏州新代数控设备有限公司 | Jig correcting device and method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8764357B2 (en) * | 2011-06-14 | 2014-07-01 | Buffalo Machinery Company Limited | Deflection correction system for a milling machine |
-
2019
- 2019-12-31 CN CN201911417790.2A patent/CN110899809B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050759A (en) * | 1995-09-11 | 2000-04-18 | Black & Decker Inc. | Depth of cut mechanism |
| CN204843096U (en) * | 2015-07-21 | 2015-12-09 | 成都飞机工业（集团）有限责任公司 | Device of exactness is prepared in operation of check -up numerical control milling machine |
| CN207343867U (en) * | 2017-10-11 | 2018-05-11 | 安徽日威数控重机有限公司 | A kind of quasi- heart means for correcting of cutter for milling machines |
| CN109454500A (en) * | 2017-12-18 | 2019-03-12 | 苏州新代数控设备有限公司 | Jig correcting device and method thereof |
| CN207741731U (en) * | 2018-01-31 | 2018-08-17 | 扬州伟达机械有限公司 | One kind being used for the hexahedral verticality calibration-free device of milling |
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| CN110899809A (en) | 2020-03-24 |
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