CN111015308B - Automatic flexible mirror image clamping vibration damper for numerical control machine tool - Google Patents
Automatic flexible mirror image clamping vibration damper for numerical control machine tool Download PDFInfo
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- CN111015308B CN111015308B CN201911254030.4A CN201911254030A CN111015308B CN 111015308 B CN111015308 B CN 111015308B CN 201911254030 A CN201911254030 A CN 201911254030A CN 111015308 B CN111015308 B CN 111015308B
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- vacuum adsorption
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- clamping device
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- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means
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- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
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- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention discloses an automatic flexible mirror image clamping vibration damper for a numerical control machine tool, which comprises an automatic positioning device and a quick clamping device, wherein the automatic positioning device is connected with the quick clamping device through a connecting rod; the automatic positioning device comprises a machine tool coordinate data acquisition and analysis system, a robot and a control system thereof; the front end of the robot is provided with a one-way sliding table which is connected with a quick clamping device; the rapid clamping device comprises a vacuum adsorption tool, and a damping vibration attenuation device is arranged on the vacuum adsorption tool. The device can be not limited to the size and the shape of a part, only the vacuum adsorption tool for the front-end binding face is replaced, the device can adapt to the processing and damping requirements of any thin-wall part, is low in cost and short in period, and fully meets the requirements of the rapid response of the aerospace product models and the universal applicability of multiple models.
Description
Technical Field
The invention relates to the field of numerical control machining, in particular to an automatic flexible mirror image clamping vibration damper for machining thin-wall parts.
Background
The whole aerospace product has the characteristics of large size, thin wall and weak rigidity. In the milling process of a spacecraft product, due to the characteristic of weak rigidity of a thin wall, a workpiece is easy to generate cutting vibration, and the phenomenon of cutting vibration can directly influence the product quality and restrict the processing efficiency, and the milling process is specifically characterized in that: vibration lines are easily generated on the machined surface, and the surface quality precision is unqualified; the cutter is easy to over-cut, so that the dimension is out of tolerance and even the cutter is scrapped; the cutting force is greatly increased, and the abrasion of the cutter is serious; the cutting amount is limited, and the processing efficiency is severely restricted. Therefore, the cutting vibration phenomenon becomes a bottleneck problem affecting the product lead time and the production cost.
The typical shell section vibration control method applied to a machining site at present mainly increases an auxiliary integral rigid tool, but the method cannot meet the requirements of quick response of model development and universal applicability of multiple models due to long manufacturing period and low repeated utilization rate.
Disclosure of Invention
Aiming at the problems in the prior art and aiming at meeting the rapid response requirements of different developed products, the invention provides the automatic flexible mirror image clamping vibration damper with wider application range, solves the problem of poor universality of the traditional rigid tool, and effectively reduces the cutting vibration in the milling process of the thin-wall part.
The technical scheme of the invention is as follows: an automatic flexible mirror image clamping vibration damper for a numerical control machine tool comprises an automatic positioning device and a quick clamping device; the automatic positioning device comprises a machine tool coordinate data acquisition and analysis system, a robot and a control system thereof; the front end of the robot is provided with a one-way sliding table which is connected with a quick clamping device; the rapid clamping device comprises a vacuum adsorption tool, and a damping vibration attenuation device is arranged on the vacuum adsorption tool.
Furthermore, the quick clamping device also comprises an air compressor and a vacuum generator; the air compressor is connected with the vacuum generator through an air pipe, and the vacuum generator is connected with the vacuum adsorption tool through the air pipe.
Furthermore, a plurality of vacuum adsorption hole structures are arranged on the vacuum adsorption tool, and each vacuum adsorption hole structure comprises a vacuum adsorption hole, a plugging ball, an annular groove, a pressure relief groove and a sealing groove; the annular groove is arranged on the inner side of the vacuum adsorption hole, and the blocking ball is arranged in the annular groove; the sealing groove is coaxially arranged at the outer side of the vacuum adsorption hole, and a sealing element is arranged in the sealing groove.
The clamping process comprises the following steps: firstly, the machine tool coordinate data acquisition and analysis system acquires the coordinates of the machining position of a machine tool cutter in real time, performs mirror image transformation on the coordinates of the machining position of the machine tool cutter, calculates the vector reverse coordinates of the cutter, and then sends the vector reverse coordinates of the cutter to the robot control system; then the robot control system controls the robot and the one-way sliding table to move, so that the vacuum adsorption tool and the damping vibration attenuation device reach the position of the reverse coordinate and are in contact with the workpiece; and finally, carrying out vacuum adsorption to finish clamping.
The invention has the beneficial effects that: the invention provides an automatic flexible mirror image clamping for a numerical control machine tool aiming at cutting vibration in the milling process of a large thin-wall part, which is characterized in that:
1. the data acquisition and analysis system and the robot can automatically follow the machining position of the numerical control machine tool, so that the vacuum adsorption tool is positioned to the machining mirror image position;
2. through the air compressor and the vacuum generator, the quick clamping and dismounting of the local vacuum adsorption tool can be realized, and the vibration control for a machining vibration area is realized;
3. for traditional rigidity frock, this scheme can not be limited to part size, shape, only changes front end binding face vacuum adsorption frock, can adapt to arbitrary thin wall parts machining damping demand, and is with low costs, and the cycle is short.
Drawings
Fig. 1 is a schematic view of the overall structure of the automatic positioning and quick clamping device of the invention.
Fig. 2 is a partial structure enlarged view of the automatic positioning and quick clamping device of the invention.
Fig. 3 is a schematic view of the overall structure of the vacuum adsorption tool of the present invention.
Fig. 4 is a schematic view of the internal structure of the vacuum adsorption tool of the present invention.
The labels in the figure are: 1 digit control machine tool, 2 work pieces, 3 four-axis joint robots, 4 air compressor, 5 cutting tool, 6 one-way slip tables, 7 damping vibration damper, 8 vacuum generator, 9 vacuum adsorption frocks, 10 vacuum adsorption holes, 11 shutoff balls, 12 annular grooves, 13 pressure release grooves, 14 seal grooves.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings.
An automatic flexible mirror image clamping vibration damper for a numerical control machine tool comprises an automatic positioning device and a quick clamping device.
The automatic positioning device comprises a machine tool coordinate data acquisition and analysis system, a robot and a control system thereof.
The working principle and the process are as follows:
1) a machining cutting tool 5 of the numerical control machine tool 1 is positioned to a machining position of the workpiece 2;
2) the data acquisition and analysis system reads the content of the numerical control machining program in advance to obtain a machining position coordinate point;
3) the data acquisition and analysis system performs mirror image transformation on the machining position coordinates to obtain an optimal action position coordinate point of the damping vibration attenuation device;
4) the data acquisition and analysis system sends the coordinate points to a control system of the four-axis joint robot 3;
5) the robot 3 controls the vacuum adsorption tool 9 and the damping vibration attenuation device 7 to be positioned to the coordinate position through the one-way sliding table 6;
6) during milling, the damping vibration-damping device 7 can freely slide on the one-way sliding table tool 6 along the radial direction of the workpiece 2, so that cutting vibration of the workpiece 2 is suppressed.
The rapid clamping device adopts a vacuum adsorption scheme and consists of an air compressor 4, a vacuum generator 8 and a vacuum adsorption tool 9. The air compressor 4 is connected with the vacuum generator 8 through an air pipe, the vacuum generator 8 is connected with the vacuum adsorption tool 9 through an air pipe, and the vacuum adsorption tool 9 is connected with the damping vibration attenuation device 7 through a bolt. The vacuum adsorption frock is provided with a plurality of distributed vacuum adsorption pore structures, and every vacuum adsorption pore structure includes vacuum adsorption hole 10, shutoff ball 11, annular groove 12, pressure relief groove 13, seal groove 14. Each vacuum chucking hole 10 is individually sealable from the workpiece surface by a sealing ring in its coaxial sealing groove 14.
1) During rapid clamping, if the workpiece 2 at the clamping position is of a closed structure, compressed air generated by the air compressor 4 enters the vacuum generator 8, local vacuum is formed inside the vacuum generator 8, air between the vacuum adsorption tool 9 and the workpiece 2 is sucked into the vacuum generator 8, a blocking ball 11 inside the vacuum adsorption tool 9 falls into a lower groove 12 under the action of self gravity, the sucked air then leaves the vacuum generator 8 to enter external atmosphere, a vacuum cavity is formed between the vacuum adsorption tool 9 and the workpiece 2, the vacuum adsorption tool 9 is connected with a damping vibration damper 7 and is rigidly adsorbed on the workpiece 2, and rapid clamping is completed.
2) During rapid clamping, if the workpiece 2 at the clamping position is partially in an open structure, the vacuum adsorption tool 9 and one or more vacuum adsorption holes on the side where the workpiece 2 is adsorbed are partially and directly positioned in an air environment. When compressed air generated by the air compressor 4 enters the vacuum generator 8, airflow flows from one side of the workpiece 2 to one side of the vacuum generator 8, and the blocking ball 11 is driven to block the air hole to form a closed cavity; and other vacuum adsorption holes which are not exposed in the air environment can form a vacuum cavity as described above, and can still play a role in vacuum adsorption to enable the vacuum adsorption tool 9 to be tightly adsorbed and attached to the workpiece 2.
3) When the quick disassembly is carried out, the vacuum generator is controlled, so that the compressed air generated by the air compressor 4 directly enters the vacuum adsorption tool 9, the vacuum at the position of the adsorption tool 9 is released, and the quick disassembly is completed.
4) Before rapid clamping, compressed air generated by the air compressor 4 directly enters the vacuum adsorption tool 9 by controlling the vacuum generator, the blocking ball 11 moves to one side of the workpiece 2 under the action of air flow, and air flow is formed through the pressure relief groove 13 to purge cuttings on the workpiece side.
The invention has the advantages of flexibility, strong universality, low cost, short period and capability of meeting the requirements of processing and damping of any thin-wall part, and fully meeting the requirements of rapid response of aerospace product models and universal applicability of various models.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, shall fall within the scope of the claimed invention.
Claims (1)
1. The utility model provides an automatic flexible mirror image clamping vibration damper for digit control machine tool which characterized in that: the automatic positioning device comprises an automatic positioning device and a quick clamping device; the automatic positioning device comprises a machine tool coordinate data acquisition and analysis system and a robot control system; the front end of the robot is provided with a one-way sliding table which is connected with a quick clamping device; the rapid clamping device comprises a vacuum adsorption tool, a damping vibration attenuation device is arranged on the vacuum adsorption tool, and the rapid clamping device further comprises an air compressor and a vacuum generator; air compressor is connected by the trachea with vacuum generator, and vacuum generator is connected by the trachea with the vacuum adsorption frock, and the clamping flow is: firstly, the machine tool coordinate data acquisition and analysis system acquires the coordinates of the machining position of a machine tool cutter in real time, performs mirror image transformation on the coordinates of the machining position of the machine tool cutter, calculates the vector reverse coordinates of the cutter, and then sends the vector reverse coordinates of the cutter to the robot control system; then the robot control system controls the robot and the one-way sliding table to move, so that the vacuum adsorption tool and the damping vibration damper reach the position of a reverse coordinate and are in contact with the workpiece, compressed air generated by an air compressor enters the vacuum generator to form local vacuum inside the vacuum generator, air between the vacuum adsorption tool and the workpiece is sucked into the vacuum generator, a plugging ball inside the vacuum adsorption tool falls into a lower groove under the action of self gravity, the sucked air then leaves the vacuum generator and enters the external atmosphere, a vacuum cavity is formed between the vacuum adsorption tool and the workpiece, the vacuum adsorption tool is connected with the damping vibration damper and is rigidly adsorbed on the workpiece to complete rapid clamping, a plurality of vacuum adsorption hole structures are arranged on the vacuum adsorption tool, and each vacuum adsorption hole structure comprises a vacuum adsorption hole, a plugging ball, an annular groove and a pressure relief groove, A sealing groove; the annular groove is arranged on the inner side of the vacuum adsorption hole, and the blocking ball is arranged in the annular groove; the sealing groove is coaxially arranged at the outer side of the vacuum adsorption hole, and a sealing element is arranged in the sealing groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254030.4A CN111015308B (en) | 2019-12-10 | 2019-12-10 | Automatic flexible mirror image clamping vibration damper for numerical control machine tool |
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| CN201911254030.4A CN111015308B (en) | 2019-12-10 | 2019-12-10 | Automatic flexible mirror image clamping vibration damper for numerical control machine tool |
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| CN111015308A CN111015308A (en) | 2020-04-17 |
| CN111015308B true CN111015308B (en) | 2021-11-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114147530B (en) * | 2021-12-02 | 2023-05-02 | 首都航天机械有限公司 | Cutting vibration damper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618250A (en) * | 1984-06-23 | 1986-01-14 | Mitsubishi Electric Corp | Vacuum sucking unit |
| CN104070391A (en) * | 2014-06-04 | 2014-10-01 | 南京航空航天大学 | Thin-wall part milling supporting damping device and working process thereof |
| CN104400086A (en) * | 2014-10-10 | 2015-03-11 | 南京航空航天大学 | Aircraft skin mirror milling method and aircraft skin mirror milling device |
| CN205950347U (en) * | 2016-08-24 | 2017-02-15 | 中国航天科技集团公司长征机械厂 | Melon lamella attenuate milling vacuum adsorption equipment |
| CN207593322U (en) * | 2017-12-11 | 2018-07-10 | 深圳市利和兴股份有限公司 | A kind of vacuum absorption device |
| KR101921854B1 (en) * | 2018-01-05 | 2018-11-23 | 마상희 | Vacuum chuck and vacuum chuck apparatus |
-
2019
- 2019-12-10 CN CN201911254030.4A patent/CN111015308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618250A (en) * | 1984-06-23 | 1986-01-14 | Mitsubishi Electric Corp | Vacuum sucking unit |
| CN104070391A (en) * | 2014-06-04 | 2014-10-01 | 南京航空航天大学 | Thin-wall part milling supporting damping device and working process thereof |
| CN104400086A (en) * | 2014-10-10 | 2015-03-11 | 南京航空航天大学 | Aircraft skin mirror milling method and aircraft skin mirror milling device |
| CN205950347U (en) * | 2016-08-24 | 2017-02-15 | 中国航天科技集团公司长征机械厂 | Melon lamella attenuate milling vacuum adsorption equipment |
| CN207593322U (en) * | 2017-12-11 | 2018-07-10 | 深圳市利和兴股份有限公司 | A kind of vacuum absorption device |
| KR101921854B1 (en) * | 2018-01-05 | 2018-11-23 | 마상희 | Vacuum chuck and vacuum chuck apparatus |
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