CN111203751B - Vibration identification detection machining platform and machining process for numerical control machining thin-walled workpiece - Google Patents
Vibration identification detection machining platform and machining process for numerical control machining thin-walled workpiece Download PDFInfo
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- CN111203751B CN111203751B CN202010088326.XA CN202010088326A CN111203751B CN 111203751 B CN111203751 B CN 111203751B CN 202010088326 A CN202010088326 A CN 202010088326A CN 111203751 B CN111203751 B CN 111203751B
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- 238000003754 machining Methods 0.000 title claims abstract description 76
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 56
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- 238000001125 extrusion Methods 0.000 claims abstract description 33
- 230000001629 suppression Effects 0.000 claims abstract description 25
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- 238000012544 monitoring process Methods 0.000 claims abstract description 5
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- 238000003801 milling Methods 0.000 claims description 15
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
Abstract
The machining platform comprises a machining mechanism and at least two groups of vibration suppression mechanisms, wherein the machining mechanism is positioned between the two groups of vibration suppression mechanisms; the vibration suppression mechanism comprises a base, two stand columns are arranged on the base, a moving frame is arranged between the two stand columns and can vertically move up and down along the stand columns, a plurality of extrusion parts are arranged on the moving frame, a placing table located on the base is correspondingly arranged below the extrusion parts, the placing table and the extrusion parts can be matched to form a clamping area, the clamping area is used for clamping thin-walled parts, a vibration detection unit and an actuator are arranged on the placing table, the vibration detection unit is used for monitoring the vibration amplitude of the thin-walled parts, and the actuator is used for applying reverse suppression force to the thin-walled parts. In the processing process, the amplitude gradient of the thin-wall part is small, and all parts are stressed uniformly, so that the local stress uniformity and the small amplitude difference of the whole thin-wall part in the processing process are ensured, and the processing precision and the quality are improved.
Description
Technical Field
The invention relates to the field of machining, in particular to a vibration identification detection machining platform and a machining process for a numerical control machining thin-walled workpiece.
Background
The thin-wall part has the advantages of light weight, high specific strength, compact structure, material saving and the like, so the thin-wall part is widely applied to the fields of aerospace, automobiles, energy sources and the like.
However, the thin-wall part belongs to a weak-rigidity part, and the processing difficulty of the thin-wall part is mainly that the thin-wall part is easy to vibrate under the action of cutting force, and particularly, the vibration phenomenon is more obvious and even chatter vibration occurs under large cutting parameters. The existence of the vibration phenomenon not only damages the service life of a machine tool and a cutter, limits the processing efficiency, but also reduces the processing quality of the surface of a workpiece, which seriously reduces the production efficiency, reduces the precision of a finished product and improves the production cost.
At present, methods for solving the problem of machining vibration of thin-wall parts are mainly divided into a passive control method and an active control method. The main process is to apply an intelligent actuator to generate a force for compensating or offsetting vibration according to the relative vibration or cutting force between a tool and a workpiece measured on line.
The patent CN110153781A discloses a main control method for machining vibration of thin-walled parts, which utilizes a vibration detection unit to monitor a vibration signal generated by the thin-walled part during the milling process, and uses a bending actuator as an actuator of a suppression device, and applies a reverse vibration suppression force to the workpiece at the end of the actuator to actively control the vibration generated during the thin-walled part machining process. However, such a vibration suppressing apparatus and method are only applicable to thin-walled parts having a small area, and in the case of large-sized thin-walled parts, the reverse suppressing force applied to the workpiece by the actuator gradually decreases as it approaches the middle of the thin-walled part, and in this case, if the reverse suppressing force is increased, the reverse suppressing force applied to the portion near the actuator becomes excessively large, and if the reverse suppressing force is decreased, the reverse suppressing force applied to the portion near the middle of the thin-walled part becomes excessively small. Therefore, it is necessary to design a vibration identification and detection processing platform for large thin-wall parts.
Disclosure of Invention
The invention aims to provide a vibration identification detection processing platform and a processing technology for a numerical control processing thin-wall part, and aims to solve the problems of large vibration amplitude gradient, uneven reverse restraining force at each part and poor processing precision in the milling processing of a large thin-wall part in the prior art.
The invention is realized by the following technical scheme:
the vibration identification detection machining platform for the numerical control machining of the thin-walled workpiece comprises a machining mechanism and at least two groups of vibration suppression mechanisms, wherein the machining mechanism is positioned between the two groups of vibration suppression mechanisms; the vibration suppression mechanism comprises a base, two stand columns are arranged on the base, a moving frame is arranged between the two stand columns, the moving frame can vertically move up and down along the stand columns, a plurality of extrusion parts are arranged on the moving frame, a placing table located on the base is correspondingly arranged below the extrusion parts, the placing table and the extrusion parts can be matched to form a clamping area, the clamping area is used for clamping thin-walled parts, a vibration detection unit and an actuator are arranged on the placing table, the vibration detection unit is used for monitoring the vibration amplitude of the thin-walled parts, and the actuator is used for applying reverse suppression force to the thin-walled parts.
The thin-wall part machining platform disclosed in patent CN110153781A can realize real-time detection and feedback control of vibration, and has high control accuracy, but due to the structural arrangement of the clamp, when machining a large thin-wall part, one part of the clamp is subjected to vibration aggravation, and the other part of the clamp is subjected to vibration less, so that the thin-wall part is prone to uneven stress and uneven amplitude distribution, and finally, the thin-wall part machining platform causes the problems of poor machining accuracy and low machining quality. With the development of the technology, the processing of large thin-wall parts becomes an important research and development direction for the future numerical control processing. Therefore, the invention provides a processing platform and a processing technology for large thin-wall parts, which are used for regionalizing and separating the large thin-wall parts by the design of a clamp and a processing mechanism and the combination of an integral arrangement mode and then orderly milling and processing each region, thereby avoiding the problems of uneven local stress and large amplitude difference and effectively improving the processing quality of the large thin-wall parts.
Specifically, the processing platform of the technical scheme comprises a processing mechanism and a vibration suppression mechanism, wherein the processing mechanism is used for processing the thin-wall part, and the vibration suppression mechanism is used for clamping the thin-wall part and suppressing vibration generated in the processing process of the thin-wall part. The vibration suppression mechanisms are at least two groups, and a processing mechanism is arranged between the two groups of vibration suppression mechanisms. In some embodiments, in order to improve the processing efficiency, the number of the processing mechanisms may be increased by a proper amount, and preferably, the processing mechanisms and the vibration suppressing mechanism are alternately arranged.
The vibration suppression mechanism comprises a base, two parts arranged on the base are used for supporting and adjusting the position of the movable frame, and the movable frame can vertically move up and down along the stand column. There are various ways for the movable frame to vertically move up and down along the upright post. In some embodiments, the two ends of the moving frame are fixed at specific positions on the upright posts in a pin and hole manner, and in some embodiments, the two ends of the moving frame can be provided with sliding blocks and the upright posts are provided with sliding rails, so that the moving frame can be fixed at any position on the upright posts. The movable frame is provided with the extrusion pieces, the number of the extrusion pieces can be increased or reduced according to actual requirements, and the extrusion pieces can move relative to the movable frame and can also be fixed relative to the movable frame. The movable frame is in one-to-one correspondence with the placing tables below the movable frame, the movable frame and the placing tables below the movable frame are matched with each other to form a clamping point for clamping the thin-wall part, and the number of the clamping points can be increased or decreased according to actual requirements. A vibration detection unit is arranged on the placing table to monitor the vibration amplitude of the thin-wall part. Preferably, an L-shaped support rod is arranged on the placing table, a vibration detection unit is mounted on the L-shaped support rod, and the vibration detection unit is attached to the thin-wall part. The placing table is further provided with an actuator, and the actuator is located between the placing table and the workpiece and used for applying reverse restraining force to the lower surface of the thin-walled piece. The signal processing and transmitting-receiving devices such as the actuator, the vibration detection unit, the signal acquisition unit, the control computer, the power amplifier, the programmable signal generator and the like can be designed or arranged in any one of the prior art, and can also be used for monitoring and inhibiting the vibration amplitude by adopting the setting mode disclosed in the patent CN 110153781A.
Before processing, a thin-wall part to be processed is placed on a placing table, a moving frame is controlled to vertically move downwards, an extrusion piece on the moving frame exerts acting force on the thin-wall part finally, clamping of the thin-wall part is formed together with the placing table, the thin-wall part is clamped stably, a plurality of clamping points are formed on the thin-wall part, a rectangular clamping area is formed by the four clamping points and is also the smallest processing area, and the distance between every two adjacent clamping points enables the thin-wall part far away from a single clamping point not to generate large amplitude.
As a preferred embodiment of the present invention, the upright posts are provided with first slide rails, the first slide rails are provided with first slide blocks capable of moving along the first slide rails, and two ends of the moving frame are respectively connected to the first slide blocks on the two upright posts. The movable frame can be fixed at any height by moving the sliding block, so that the extrusion part can extrude thin-wall parts with different wall thicknesses.
Further, the extrusion is a screw rod which can move up and down relative to the moving frame through rotation. Through the arrangement, the fixing and extruding of the thin-wall part are divided into two steps of initial adjustment and fine adjustment. During initial adjustment, the movable frame is moved to the position where the bottom end of the extrusion piece is in contact with the thin-wall piece, and then the position of the sliding block of the movable frame on the first sliding rail is fixed, so that the extrusion piece does not clamp and fix the thin-wall piece. After the primary adjustment is accomplished, realize the fine setting through rotatory extruded piece, the fine setting adopts the mode that the symmetry screwed gradually, rotates the first extruded piece on the leftmost earlier, rotates the first extruded piece on the rightmost side again, and the second extruded piece on the leftmost side is rotated again to this analogize, and later above-mentioned step is repeated until the extrusion force meets the requirements. Through the arrangement, the extrusion force can be adjusted according to different thickness conditions of each area of the thin-wall part during machining, so that the stress of each part of the uneven thin-wall part is more uniform, the vibration of the thin-wall part during machining is reduced, and the machining precision is improved. Preferably, a handle is provided at the top end of the screw rod to facilitate rotation of the screw rod. In some embodiments, the screw rod can be integrally controlled by the controller through a servo motor.
Further, the diameter of the bottom of the screw rod is gradually increased from top to bottom. The diameter of the bottom of the screw rod is designed to be gradually increased from top to bottom, so that the contact area is increased, the local pressure of the screw rod on the surface of the thin-wall part is reduced, and the thin-wall part is effectively protected. Simultaneously, in order to improve the overall stability of lead screw structure, lead screw formula structure as an organic whole.
Further, the bottom of lead screw is provided with the protective layer. The protective layer is made of rubber materials such as nitrile rubber, silicon rubber and fluororubber, and scraping and abrasion of the surface of the thin-walled part caused by the screw rod in the rotating process are avoided.
As another preferred embodiment of the present invention, the machining mechanism includes a second slide rail, two second slide blocks are disposed on the second slide rail, a milling cutter is disposed on the second slide blocks, the two milling cutters are disposed opposite to each other, and the milling cutter is used for cutting the lower surface of the thin-walled workpiece. When the thin-wall part machining device is used, the two milling cutters synchronously move oppositely to cut the lower surface of the thin-wall part so as to machine the thin-wall part. Preferably, the milling cutter is moved by hydraulic cylinders.
Further, the base is further provided with a supporting roller, the supporting roller comprises a main body, a groove is formed in the main body, a rotating shaft is arranged in the groove, two ends of the rotating shaft are movably inserted into limiting grooves formed in the inner wall of the groove, springs are arranged on the bottom surfaces of the limiting grooves, the top ends of the springs are connected with the rotating shaft, a rotating roller is arranged on the rotating shaft and can rotate around the rotating shaft, and the upper surface of the rotating roller is higher than the upper surface of the actuator in a natural state of the springs. The natural state of the spring means that when the rotating roller is not acted by other force, namely when no thin-wall part is placed, the rotating roller is higher than the upper surface of the actuator, therefore, after the thin-wall part is placed, under the action of the gravity of the thin-wall part, the rotating roller vertically moves downwards, and the spring contracts. Through the arrangement, the rotating roller is convenient for putting in and taking out the thin-walled piece, and is completed in one processing stage, after the moving frame is lifted, the thin-walled piece can be automatically lifted under the action of the spring, and then the thin-walled piece can be taken out from the processing platform by pulling one end of the thin-walled piece, so that the processing technology is simpler and more convenient; moreover, the supporting rollers are arranged below the clamping area, so that a good supporting effect and a good vibration-proof effect are achieved, the effect of the supporting rollers is close to that of the clamping points, the vibration of the thin-wall part in the machining process is further reduced, and the precision of the machining process is further improved.
Further, the both ends of pivot all are provided with the ball, the ball is with the inner wall butt of spacing groove. The setting up of ball changes the sliding friction of pivot and spacing inslot wall into rolling friction on the one hand, and the pivot of being convenient for removes along vertical direction, and on the other hand, the butt of ball and spacing inslot wall makes the pivot can not remove towards spacing inslot wall direction at the in-process of vertical removal, has improved the structural stability of supporting roller under the pressure-bearing state.
Further, along the direction from one upright to the other upright, the distance between two adjacent extruded parts is gradually reduced and then gradually increased. The clamping area is smaller as the part is closer to the middle part of the thin-wall part, so that the amplitude of the middle part of the thin-wall part in the machining process is further reduced.
The invention is based on any one of the processing platforms, and also provides a vibration identification detection processing technology for the numerical control processing thin-walled workpiece, and the technology comprises the following steps:
(A) placing the thin-wall piece on a placing table;
(B) controlling the moving frame to vertically move downwards so that each extrusion piece extrudes the upper surface of the thin-walled piece;
(C) starting the machining mechanism to machine the thin-walled workpiece until the thin-walled workpiece is machined in the machining area corresponding to the machining mechanism;
(D) controlling the movable frame to move vertically upwards to remove the acting force applied to the upper surface of the thin-walled piece;
(E) moving the thin-wall part to move the part to be processed of the thin-wall part to the processing mechanism;
(F) repeating the steps (C) - (E) until all parts to be machined of the thin-wall part are machined;
(G) and taking out the processed thin-walled part.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. in the processing process, the thin-wall part in the clamping area does not generate larger amplitude gradient, and the stress at each part is relatively uniform, so that the local stress uniformity and small amplitude difference of the whole thin-wall part in the processing process are ensured, and the processing precision and quality are improved;
2. the invention comprises two adjusting steps of initial adjustment and fine adjustment, and the extrusion force can be adjusted according to different thickness conditions of each area of the thin-wall part during processing, so that the stress at each position of the uneven thin-wall part is more uniform, the vibration of the thin-wall part during processing is further reduced, and the processing precision is improved;
3. the thin-wall part machining platform is provided with the supporting idler wheels, the rotating rollers of the thin-wall part machining platform are convenient to put in and take out, and can be completed in one machining stage, after the moving frame is lifted, the thin-wall part can be automatically lifted up under the action of the spring, and then the thin-wall part can be taken out of the machining platform by pulling one end of the thin-wall part, so that the machining process is simpler and more convenient; moreover, the supporting rollers are arranged below the clamping area, so that a good supporting effect and a good vibration-proof effect are achieved, the effect of the supporting rollers is close to that of increasing clamping points, the vibration of the thin-walled part in the machining process is further reduced, and the precision of the machining process is further improved;
4. the two ends of the rotating shaft of the support roller are respectively provided with the ball, so that on one hand, sliding friction between the rotating shaft and the inner wall of the limiting groove is converted into rolling friction, the rotating shaft can conveniently move along the vertical direction, on the other hand, the rotating shaft cannot move towards the inner wall of the limiting groove in the vertical moving process due to the abutting of the balls and the inner wall of the limiting groove, and the structural stability of the support roller in a pressure bearing state is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a top view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vibration suppression mechanism in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a processing mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a support roller according to the present invention.
Reference numbers and corresponding part names in the drawings:
1-vibration suppression mechanism, 2-processing mechanism, 3-base, 4-upright post, 5-placing table, 6-vibration detection unit, 7-actuator, 8-first slide rail, 9-first slide block, 10-supporting roller, 101-main body, 102-rotating roller, 103-rotating shaft, 104 ball, 105-spring, 11-moving frame, 12-screw rod, 13-handle, 14-second slide rail, 15-second slide block, 16-milling cutter and 17-thin-wall part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1:
the vibration identification detection machining platform for the numerical control machined thin-walled workpiece shown in fig. 1 to 3 comprises a machining mechanism 2 and at least two groups of vibration suppression mechanisms 1, wherein the machining mechanism 2 is located between the two groups of vibration suppression mechanisms 1; the vibration suppression mechanism 1 comprises a base 3, two upright posts 4 are arranged on the base 3, a moving frame 11 is arranged between the two upright posts 4, the moving frame 11 can vertically move up and down along the upright posts 4, a plurality of extrusion parts are arranged on the moving frame 11, a placing table 5 positioned on the base 3 is correspondingly arranged below the extrusion parts, the placing table 5 and the extrusion parts can be matched to form a clamping area, the clamping area is used for clamping a thin-walled part 17, a vibration detection unit 6 and an actuator 7 are arranged on the placing table 5, the vibration detection unit 6 is used for monitoring the vibration amplitude of the thin-walled part 17, and the actuator 7 is used for applying reverse suppression force to the thin-walled part 17; the upright posts 4 are provided with first slide rails 8, the first slide rails 8 are provided with first slide blocks 9 capable of moving along the first slide rails 8, and two ends of the moving frame 11 are respectively connected with the first slide blocks 9 on the two upright posts 4; the machining mechanism 2 comprises a second slide rail 14, two second slide blocks 15 are arranged on the second slide rail 14, milling cutters 16 are arranged on the second slide blocks 15, the two milling cutters (16) are oppositely arranged, and the milling cutters 16 are used for cutting the lower surface of a thin-wall part 17.
In some embodiments, the extrusion is a lead screw 12, and the lead screw 12 can move up and down relative to the moving frame 11 by rotating.
The fixing and extruding of the thin-wall part is divided into two steps of initial adjustment and fine adjustment. During initial adjustment, the movable frame is moved to the position where the bottom end of the extrusion piece is in contact with the thin-wall piece, and then the position of the sliding block of the movable frame on the first sliding rail is fixed, so that the extrusion piece does not clamp and fix the thin-wall piece. After the primary adjustment is accomplished, realize the fine setting through rotatory extruded piece, the fine setting adopts the mode that the symmetry screwed gradually, rotates the first extruded piece on the leftmost earlier, rotates the first extruded piece on the rightmost side again, and the second extruded piece on the leftmost side is rotated again to this analogize, and later above-mentioned step is repeated until the extrusion force meets the requirements. Through the arrangement, the extrusion force can be adjusted according to different thickness conditions of each area of the thin-wall part during machining, so that the stress of each part of the uneven thin-wall part is more uniform, the vibration of the thin-wall part during machining is reduced, and the machining precision is improved. Preferably, a handle is provided at the top end of the screw rod to facilitate rotation of the screw rod.
In some embodiments, the screw 12 can be integrally controlled by the controller through a servo motor.
In some embodiments, the diameter of the bottom of the screw 12 gradually increases from top to bottom.
In some embodiments, the bottom end of the lead screw 12 is provided with a protective layer. Preferably, the protective layer is made of rubber.
In some embodiments, the distance between two adjacent extrusions gradually decreases and then gradually increases in the direction from one upright 4 to the other upright 4.
Example 2:
on the basis of embodiment 1, as shown in fig. 4, a supporting roller 10 is further disposed on the base 3, the supporting roller 10 includes a main body 101, a groove is disposed on the main body 101, a rotating shaft 103 is disposed in the groove, two ends of the rotating shaft 103 are movably inserted into a limiting groove disposed on an inner wall of the groove, a spring 105 is disposed on a bottom surface of the limiting groove, a top end of the spring 105 is connected with the rotating shaft 103, a rotating roller 102 is disposed on the rotating shaft 103, the rotating roller 102 can rotate around the rotating shaft 103, and an upper surface of the rotating roller 102 is higher than an upper surface of the actuator 7 in a natural state of the spring 105.
In some embodiments, the two ends of the rotating shaft 103 are provided with balls 104, and the balls 104 are abutted with the inner wall of the limiting groove.
In the embodiment, the rotating roller is convenient for putting in and taking out the thin-walled part, and is completed in one processing stage, after the moving frame is lifted, the thin-walled part can be automatically lifted under the action of the spring, and then the thin-walled part can be taken out from the processing platform by pulling one end of the thin-walled part, so that the processing technology is simpler and more convenient; moreover, the supporting rollers are arranged below the clamping area, so that a good supporting effect and a good vibration-proof effect are achieved, the effect of the supporting rollers is close to that of the clamping points, the vibration of the thin-wall part in the machining process is further reduced, and the precision of the machining process is further improved.
Example 3:
the vibration identification detection machining process for the numerical control machining thin-walled workpiece adopts the machining platform in any one of the embodiments of the claims, and comprises the following steps:
(A) placing the thin-walled part 17 on the placing table 5;
(B) controlling the moving frame 11 to move vertically downwards so that each extrusion piece extrudes the upper surface of the thin-wall piece 17;
(C) the processing mechanism 2 is opened to process the thin-wall part 17 until the thin-wall part processing is finished in the processing area corresponding to the processing mechanism 2;
(D) controlling the movable frame 11 to move vertically upwards to remove the acting force applied to the upper surface of the thin-wall part 17;
(E) moving the thin-wall part 17 to move the part to be processed of the thin-wall part 17 to the processing mechanism 2;
(F) repeating the steps (C) - (E) until all parts to be machined of the thin-wall part 17 are machined;
(G) and taking out the processed thin-wall part 17.
As used herein, "first," "second," etc. (e.g., first slide, second slide, first slider, second slider, etc.) merely distinguish the respective components for clarity of description and are not intended to limit any order or to emphasize importance, etc. Further, the term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The thin-walled workpiece vibration identification detection machining platform is characterized by comprising a machining mechanism (2) and at least two groups of vibration suppression mechanisms (1), wherein the machining mechanism (2) is positioned between the two groups of vibration suppression mechanisms (1); vibration suppression mechanism (1) includes base (3), be provided with two stand (4) on base (3), be provided with between two stand (4) and remove frame (11), remove frame (11) and can follow stand (4) and vertically reciprocate, be provided with a plurality of extrusions on removing frame (11), the extrusion below correspondence is provided with places platform (5) that are located base (3), place platform (5) and extrusion can cooperate and form the clamping area, the clamping area is used for centre gripping thin wall spare (17), is provided with vibration detecting element (6) and actuator (7) on placing platform (5), vibration detecting element (6) are used for monitoring the vibration range of thin wall spare (17), actuator (7) are used for applying reverse suppression power to thin wall spare (17).
2. The vibration identification and detection machining platform for the numerical control machined thin-walled workpiece according to claim 1 is characterized in that a first slide rail (8) is arranged on the upright columns (4), a first slide block (9) capable of moving along the first slide rail (8) is arranged on the first slide rail (8), and two ends of the moving frame (11) are respectively connected with the first slide blocks (9) on the two upright columns (4).
3. The numerical control machining thin-walled part vibration identification detection machining platform of claim 1, characterized in that the extrusion part is a lead screw (12), and the lead screw (12) can move up and down relative to the moving frame (11) through rotation.
4. The numerical control machining thin-walled workpiece vibration identification and detection machining platform according to claim 3, characterized in that the diameter of the bottom of the screw rod (12) is gradually increased from top to bottom.
5. The numerical control machining thin-walled workpiece vibration identification and detection machining platform according to claim 3, characterized in that a protective layer is arranged at the bottom end of the screw rod (12).
6. The numerical control machining thin-walled part vibration identification detection machining platform according to claim 1 is characterized in that the machining mechanism (2) comprises a second slide rail (14), two second slide blocks (15) are arranged on the second slide rail (14), a milling cutter (16) is arranged on the second slide blocks (15), the two milling cutters (16) are oppositely arranged, and the milling cutter (16) is used for cutting the lower surface of a thin-walled part (17).
7. The vibration identification and detection machining platform for the numerical control machined thin-walled workpiece according to claim 1 is characterized in that a supporting roller (10) is further arranged on the base (3), the supporting roller (10) comprises a main body (101), a groove is formed in the main body (101), a rotating shaft (103) is arranged in the groove, two ends of the rotating shaft (103) are movably inserted into limiting grooves formed in the inner wall of the groove, a spring (105) is arranged on the bottom surface of each limiting groove, the top end of the spring (105) is connected with the rotating shaft (103), a rotating roller (102) is arranged on the rotating shaft (103), the rotating roller (102) can rotate around the rotating shaft (103), and the upper surface of the rotating roller (102) is higher than the upper surface of an actuator (7) in a natural state of the spring (105).
8. The numerical control machining thin-walled workpiece vibration identification detection machining platform according to claim 7, characterized in that two ends of the rotating shaft (103) are provided with balls (104), and the balls (104) are abutted to the inner wall of the limiting groove.
9. The vibration identification and detection processing platform for the numerical control processed thin-walled workpiece according to any one of claims 1 to 8, characterized in that the distance between two adjacent extruded parts is gradually reduced and then gradually increased along the direction from one upright column (4) to the other upright column (4).
10. The vibration identification detection machining process for the numerical control machined thin-walled workpiece is characterized by adopting the machining platform of any one of claims 1 to 9, and comprises the following steps:
(A) placing the thin-wall piece (17) on a placing table (5);
(B) controlling the moving frame (11) to move vertically downwards so that each extrusion piece extrudes the upper surface of the thin-walled piece (17);
(C) starting the machining mechanism (2) to machine the thin-walled workpiece (17) until the thin-walled workpiece is machined in the machining area corresponding to the machining mechanism (2);
(D) controlling the moving frame (11) to move vertically upwards to remove the acting force applied to the upper surface of the thin-wall piece (17);
(E) moving the thin-wall part (17) to move the part to be processed of the thin-wall part (17) to the processing mechanism (2);
(F) repeating the steps (C) - (E) until all parts to be machined of the thin-wall part (17) are machined;
(G) and taking out the processed thin-wall part (17).
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| CN111203751A (en) | 2020-05-29 |
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