Online error compensation device in ultra-precision machining

Abstract

The utility model discloses an on-line error compensation device in ultra-precision machining, which relates to the technical field of error compensation and comprises machining equipment with a working table fixedly connected with a frame. The pneumatic clamp is fixedly connected with the working table of the processing equipment through a group of mounting brackets; the error compensation assembly is fixedly connected with the frame body and comprises symmetrical L-shaped plates, the symmetrical L-shaped plates are respectively connected with the frame body, the symmetrical L-shaped plates are respectively connected with stepped circular truncated cones through bearings, the symmetrical stepped circular truncated cones are respectively and fixedly connected with first pointers, and the symmetrical L-shaped plates are respectively provided with first circular ring reading marks corresponding to the corresponding first pointers. The technical problem to be solved by the utility model is to provide the on-line error compensation device in the ultra-precision machining, so that the deformation and the position change of a clamp can be conveniently monitored in real time, the clamp can be monitored in the ultra-precision machining process, and the on-line error compensation is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to error compensation technical field, specifically is an online error compensation device in super precision machining. BACKGROUND

[0002] The core idea of online error compensation is to monitor the error in the machining process in real time, and correct these errors by dynamically adjusting the machining parameters or tool path. Its essence is to offset the influence of error sources such as machine tool, fixture, thermal deformation by "artificially introducing compensation amount", so as to break through the inherent precision limit of the machine tool itself.

[0003] At present, there is still a lack of a device that can conveniently realize real-time monitoring of the deformation and position change of the fixture to realize monitoring of the fixture in the super precision machining process and realize online error compensation. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide an online error compensation device in super precision machining, which can conveniently realize real-time monitoring of the deformation and position change of the fixture to realize monitoring of the fixture in the super precision machining process and realize online error compensation.

[0005] The utility model realizes the utility model purposes by adopting the following technical scheme:

[0006] An online error compensation device in super precision machining is characterized by comprising: a machining device, a workbench surface of which is fixedly connected with a frame body; a pneumatic clamp, which is fixedly connected with the workbench surface of the machining device through a group of mounting brackets; and an error compensation assembly, which is fixedly connected with the frame body and comprises symmetrical L plates, the symmetrical L plates being respectively connected with the frame body, the symmetrical L plates being respectively bearing-connected with stepped circular tables, the symmetrical stepped circular tables being respectively fixedly connected with first pointers, and the symmetrical L plates being respectively provided with first ring number display marks corresponding to the first pointers; the symmetrical stepped circular tables are respectively fixedly connected with symmetrical mounting rods, the symmetrical mounting rods are respectively rotationally connected with transmission shafts, the symmetrical transmission shafts are respectively fixedly connected with push rods of telescopic rods, the symmetrical telescopic rods are respectively rotationally connected with H plates, the H plates are fixedly connected with connecting rods, and the connecting rods are fixedly connected with the pneumatic clamp. Figure 3 When deformation or position change occurs in the front-rear direction (as shown in the figure), the number displayed by the first ring number display mark corresponding to the first pointer changes, and the number displayed on both sides changes by the same amount.

[0007] As a further limitation of the technical scheme, the symmetrical transmission shafts are respectively fixedly connected with center shafts of driving bevel gears, the symmetrical driving bevel gears are respectively meshed with driven bevel gears, and the hollow shafts of the symmetrical driven bevel gears are respectively bearing-connected with the corresponding L plates.Figure 3 When the bevel gear (as shown) deforms or changes position, the driving bevel gear drives the driven bevel gear.

[0008] As a further limitation of this technical solution, the hollow shafts of the symmetrical driven bevel gears are respectively fixedly connected to gear rings, the symmetrical gear rings respectively mesh with gears, the symmetrical gears are respectively fixedly connected to circular block shafts, and the symmetrical circular block shafts are respectively bearing-connected to the corresponding L plates. When the gear rings rotate, they drive the gears to rotate, thereby realizing the rotation of the circular block shafts.

[0009] As a further limitation of this technical solution, the symmetrical circular blocks are respectively fixedly connected to the second pointers, and the symmetrical L-plates are respectively provided with second circular indicator markings corresponding to the second pointers. When the pneumatic clamp deforms or changes position along the height direction, the reading of the second circular indicator marking corresponding to the second pointer changes, with the readings on both sides changing the same. When it deforms or changes position along the left-right direction, the reading of the second circular indicator marking corresponding to the second pointer changes, with the readings on both sides changing differently, allowing the camera to perform real-time security monitoring.

[0010] As a further limitation of this technical solution, the error compensation component includes symmetrical cameras, each of which is fixedly connected to its corresponding L-plate. The cameras provide real-time security monitoring of the first and second pointers.

[0011] Compared with related technologies, the online error compensation device for ultra-precision machining provided by this utility model has the following beneficial effects:

[0012] (1) This device uses a circular indicator and a pointer to facilitate the indication of when the pneumatic clamp is deformed or its position changes;

[0013] (2) This device can realize the deformation and positional changes of the pneumatic clamp in three-dimensional space, and more realistically reflect the error of the pneumatic clamp;

[0014] (3) This device uses a telescopic rod to achieve online error compensation when the position of the pneumatic clamp changes, making it easy to use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0017] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0018] Figure 4 It is a local explosion schematic view of the utility model;

[0019] Figure 5 It is a local three-dimensional structure schematic view of the utility model Figure 3 ;

[0020] Figure 6 It is a local three-dimensional structure schematic view of the utility model Figure 4 .

[0021] In the figure: 1, processing equipment, 2, pneumatic clamp, 3, mounting bracket, 4, frame, 5, L plate, 6, connecting rod, 7, H plate, 8, telescopic rod, 9, camera, 10, first circular ring number mark, 11, first pointer, 12, second pointer, 13, second circular ring number mark, 14, driven bevel gear, 15, gear ring, 16, transmission shaft, 17, mounting rod, 18, stepped round table, 19, round block shaft, 20, driving bevel gear, 21, gear. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Embodiment one: an online error compensation device in ultra-precision machining, comprising: processing equipment 1, the worktable surface of which is fixedly connected with a frame 4; pneumatic clamp 2, which is fixedly connected with the worktable surface of the processing equipment 1 through a set of mounting brackets 3; error compensation assembly, which is fixedly connected with the frame 4, comprising symmetrical L plates 5, the symmetrical L plates 5 are respectively connected with the frame 4, the symmetrical L plates 5 are respectively bearing-connected stepped round tables 18, the symmetrical stepped round tables 18 are respectively fixedly connected with first pointers 11, and the symmetrical L plates 5 are respectively provided with first circular ring number marks 10 corresponding to the first pointers 11; the symmetrical stepped round tables 18 are respectively fixedly connected with symmetrical mounting rods 17, the symmetrical mounting rods 17 are respectively rotationally connected with transmission shafts 16, the symmetrical transmission shafts 16 are respectively fixedly connected with the push rods of telescopic rods 8, the symmetrical telescopic rods 8 are respectively rotationally connected with H plates 7, the H plates 7 are fixedly connected with connecting rods 6, and the connecting rods 6 are fixedly connected with the pneumatic clamp 2. When deformation or position change along the front-back direction occurs (as shown in the figure), the number of the first circular ring number mark 10 corresponding to the first pointer 11 changes, and the number changes on both sides are the same. Figure 3

[0024] ​The symmetrical drive shafts 16 are respectively fixedly connected to the central shaft of the driving bevel gear 20. The symmetrical driving bevel gears 20 respectively mesh with the driven bevel gears 14. The hollow shafts of the symmetrical driven bevel gears 14 are respectively bearing connected to the corresponding L plates 5. When the pneumatic clamp 2 moves along the height direction or the left and right direction (e.g. Figure 3 When the bevel gear 20 (as shown) deforms or changes position, the driving bevel gear 20 drives the driven bevel gear 14.

[0025] The hollow shafts of the symmetrical driven bevel gears 14 are respectively fixedly connected to the gear rings 15. The symmetrical gear rings 15 mesh with the gears 21 respectively. The symmetrical gears 21 are respectively fixedly connected to the circular block shafts 19. The symmetrical circular block shafts 19 are respectively connected to the corresponding L plates 5 by bearings. When the gear rings 15 rotate, they drive the gears 21 to rotate, thereby realizing the rotation of the circular block shafts 19.

[0026] The symmetrical circular shafts 19 are respectively fixedly connected to the second pointers 12, and the symmetrical L-plates 5 are respectively provided with second circular indicator marks 13 corresponding to the second pointers 12. When the pneumatic clamp 2 deforms or changes position along the height direction, the reading of the second circular indicator mark 13 corresponding to the second pointer 12 changes, and the readings on both sides change the same. When it deforms or changes position along the left and right directions, the reading of the second circular indicator mark 13 corresponding to the second pointer 12 changes, and the readings on both sides change differently, and the camera 9 performs real-time security monitoring.

[0027] The error compensation component includes symmetrical cameras 9, which are respectively fixedly connected to the corresponding L-plates 5. The cameras 9 are used to perform real-time security monitoring of the first pointer 11 and the second pointer 12.

[0028] The working principle of the online error compensation device for ultra-precision machining provided by this utility model is as follows:

[0029] When the pneumatic clamp 2 deforms or changes position along the height direction, the connecting rod 6 moves downward, which in turn moves the H-plate 7 downward. The H-plate 7 then causes the telescopic rod 8 to swing and extend simultaneously. The telescopic rod 8 drives the transmission shaft 16 to rotate, which in turn drives the active bevel gear 20 to rotate. The active bevel gear 20 drives the driven bevel gear 14 and the gear ring 15 to rotate, which in turn drives the gear 21 and the circular block shaft 19 to rotate. The circular block shaft 19 causes the second pointer 12 to swing, and the reading of the second circular ring indicator 13 corresponding to the second pointer 12 changes. The readings on both sides change in the same way, and the camera 9 performs real-time security monitoring.

[0030] When deformation or positional change occurs in the left-right direction (such as...) Figure 3As shown in the figure), the connecting rod 6 drives the H plate 7 to move, the H plate 7 drives the two side telescopic rods 8 to swing (along the left-right direction) and simultaneously stretch and retract, the two side telescopic rods 8 swing at different angles and stretch and retract by different amounts, the second pointer 12 corresponding second circular ring number display mark 13 changes the number display, the two sides of the number display change differently, and the camera 9 performs real-time safety monitoring.

[0031] When deformation or position change along the front-back direction occurs (such as Figure 3 As shown in the figure), the connecting rod 6 drives the H plate 7 to move, the H plate 7 drives the two side telescopic rods 8 to swing (along the left-right direction) and simultaneously stretch and retract, the two side telescopic rods 8 swing at different angles and stretch and retract by different amounts, the second pointer 12 corresponding second circular ring number display mark 13 changes the number display, the two sides of the number display change differently, and the camera 9 performs real-time safety monitoring.

[0032] Embodiment two: This embodiment is further described on the basis of embodiment one, the telescopic rod 8 adopts a pneumatic push rod, during monitoring, the telescopic rod 8 is not inflated, and can freely stretch and retract, during error compensation, the telescopic rod 8 is inflated, and position adjustment of the pneumatic clamp 2 is realized.

[0033] The model of the telescopic rod 8 is MD16x80.

[0034] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. An on-line error compensation device in ultra-precision machining, characterized in that it comprises: a machining device (1) whose worktable is fixedly connected to a frame (4); a pneumatic clamp (2) fixedly connected to the worktable of the machining device (1) through a set of mounting brackets (3); an error compensation assembly fixedly connected to the frame (4) and comprising symmetrical L-plates (5) respectively connected to the frame (4), the symmetrical L-plates (5) are respectively bearing-connected to stepped round tables (18), the symmetrical stepped round tables (18) are respectively fixedly connected to first pointers (11), and the symmetrical L-plates (5) are respectively provided with first circular ring number indicators (10) corresponding to the first pointers (11); the symmetrical stepped round tables (18) are respectively fixedly connected to symmetrical mounting rods (17), the symmetrical mounting rods (17) are respectively rotationally connected to transmission shafts (16), the symmetrical transmission shafts (16) are respectively fixedly connected to push rods of telescopic rods (8), the symmetrical telescopic rods (8) are respectively rotationally connected to H-plates (7), the H-plates (7) are fixedly connected to connecting rods (6), and the connecting rods (6) are fixedly connected to the pneumatic clamp (2).

2. The apparatus for on-line error compensation in ultra-precision machining according to claim 1, wherein: The symmetrical transmission shafts (16) are respectively fixedly connected to center shafts of driving bevel gears (20), the symmetrical driving bevel gears (20) are respectively meshed with driven bevel gears (14), and hollow shafts of the symmetrical driven bevel gears (14) are respectively bearing-connected to the corresponding L-plates (5).

3. The apparatus for on-line error compensation in ultra-precision machining according to claim 2, wherein: The hollow shafts of the symmetrical driven bevel gears (14) are respectively fixedly connected to gear rings (15), the symmetrical gear rings (15) are respectively meshed with gears (21), the symmetrical gears (21) are respectively fixedly connected to round block shafts (19), and the symmetrical round block shafts (19) are respectively bearing-connected to the corresponding L-plates (5).

4. The apparatus for on-line error compensation in ultra-precision machining according to claim 3, wherein: The symmetrical round block shafts (19) are respectively fixedly connected to second pointers (12), and the symmetrical L-plates (5) are respectively provided with second circular ring number indicators (13) corresponding to the second pointers (12).

5. The apparatus for on-line error compensation in ultra-precision machining according to claim 1, wherein: The error compensation assembly comprises symmetrical cameras (9) respectively fixedly connected to the corresponding L-plates (5).

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