CN110524307B

CN110524307B - High-precision positioning tool compensation device for workpiece machining

Info

Publication number: CN110524307B
Application number: CN201910862556.4A
Authority: CN
Inventors: 陈会涛; 柴杉杉; 吕松宝; 管众; 何佳佳
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-08-25
Anticipated expiration: 2039-09-11
Also published as: CN110524307A

Abstract

The invention discloses a high-precision positioning tool compensation device for workpiece processing, which comprises a base, wherein one end of the base is connected with a detection assembly, the other end of the base is connected with a fixed assembly, the detection assembly is used for detecting the position of a tool and feeding the position back to a control center to adjust the tool, and the fixed assembly is used for fixing the base and the detection assembly on a processing device. The device can be arranged outside a plurality of complex machine tools, and has strong universality.

Description

High-precision positioning tool compensation device for workpiece machining

Technical Field

The invention belongs to a cutter compensation device, and particularly relates to a high-precision positioning cutter compensation device for workpiece machining.

Background

The abrasion of the cutter is a phenomenon which is ubiquitous and inevitable in machining, and the abrasion of the cutter can change the position of the cutter relative to a workpiece, so that the quality of the machined workpiece is influenced, and therefore the abrasion loss of the cutter needs to be monitored in time and the position of the cutter needs to be adjusted and compensated in time.

Chinese patent publication No. CN 1347793a discloses an external active compensation method and device for axial runout of a rotary spindle tool, the external active compensation device is independent of the spindle and includes: the device comprises a sensor, an extension frame, a plurality of actuators and a control module. The extending frame extends between a base and a position close to the cutter, and the sensor is combined at the tail end of the extending frame and corresponds to the cutter. The actuator is arranged between the outer part of the main shaft and the base and can drive the whole main shaft to carry out micro axial displacement motion relative to the base. The control module receives the axial deflection displacement of the tool transmitted by the sensor and controls the micro-feeding amount of the actuator according to the axial deflection displacement, so that the whole spindle device and the tool are enabled to perform micro axial compensation displacement. "this patent is provided with a sensor on the compensating device, but does not mount a protection device on the sensor, so that the sensor is exposed to a severe processing environment, and inevitably during processing of a workpiece, processing debris can contaminate and even damage the sensor, resulting in a reduction in accuracy thereof, and in addition, the compensating device has poor versatility and is not conveniently mounted on a machine tool with an irregular shape.

Therefore, it is necessary to provide a compensation device for a high-precision positioning tool in workpiece processing to solve the above problems.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a work piece processing high accuracy positioning tool compensation arrangement, its characterized in that, it includes the base, the one end and the determine module of base link to each other, and its other end links to each other with fixed subassembly, determine module is used for carrying out position detection and feedback to control center and adjusts the cutter to the cutter, fixed subassembly is used for fixing base and determine module on processingequipment.

Further, as preferred, fixed subassembly includes fixed subassembly and lower fixed subassembly, it fixes in one side of base to go up fixed subassembly, fixed subassembly does not link to each other with the base down, fixed subassembly passes through the bolt and sets up the installation ear of fixed subassembly both sides about and fixes the below at last fixed subassembly down, go up fixed subassembly and fixed subassembly down structure and size the same.

Further, as preferred, go up fixed subassembly and include the hydraulic pressure master cylinder and set up a plurality of hydraulic pressure auxiliary cylinder in the hydraulic pressure master cylinder, the hydraulic pressure auxiliary cylinder is the dot matrix form and sets up in the hydraulic pressure master cylinder, the hydraulic pressure auxiliary cylinder includes 4-10 rows of hydraulic pressure auxiliary cylinder and the 6-20 rows of hydraulic pressure auxiliary cylinder of vertical setting that transversely set up, in the cavity of hydraulic pressure master cylinder embedding hydraulic pressure auxiliary cylinder, the one end that the hydraulic pressure auxiliary cylinder is close to the cavity is provided with into oil ring, the exit of the other end of hydraulic pressure auxiliary cylinder is provided with oil blanket and dust ring, the oil blanket is closer to into oil ring setting for dust ring, it is provided with the hydraulic stem to slide in the hydraulic pressure auxiliary cylinder, the one end that the hydraulic stem is close to into oil ring is fixed to be provided with the piston, the other end of hydraulic stem is fixed and is provided with.

Further, as a preferred option, a pushing cylinder is arranged in a cavity of the hydraulic master cylinder in a sliding manner, the pushing cylinder is of a revolving body structure and divides the cavity into an upper part and a lower part, a sealing device is arranged at a contact position of the pushing cylinder and the inner wall of the cavity, a plurality of hydraulic push rods are arranged on the pushing cylinder, the hydraulic push rods are arranged on the hydraulic master cylinder in a sliding manner, an oil seal and a dust ring are arranged at a contact position of the hydraulic master cylinder and the hydraulic push rods, the oil seal is arranged closer to the oil inlet ring relative to the dust ring, a plurality of one-way valves are arranged on the hydraulic master cylinder, and the one-way valves on the hydraulic master cylinder are arranged in a direction which can enable liquid in the cavity to flow out of the; the push cylinder is provided with a plurality of check valves, wherein the check valve on the first half of the push cylinder is communicated with a hydraulic pipe, the hydraulic pipe penetrates out of the hydraulic master cylinder, the check valve connected with the hydraulic pipe is arranged in a direction opposite to that of the check valve on the hydraulic master cylinder, and the check valve on the second half of the push cylinder is arranged in the same direction as that of the check valve on the hydraulic master cylinder.

Further, as preferred, the detection assembly includes the mount pad, set up the automatic telescopic machanism in the mount pad, set up the sensor in automatic telescopic machanism lower part and set up the sealed protection device in the mount pad lower part.

Further, as preferred, the mount pad includes the footstock and sets up the cylinder chamber in the footstock below, footstock and cylinder chamber are the bilayer structure.

Further, preferably, the automatic telescoping mechanism comprises a driving motor arranged on the top seat and two switches electrically connected with the driving motor, an output shaft of the driving motor penetrates through the top seat and is connected with a lead screw through a coupler, a ball is arranged on the lead screw, a limiting slide rod is fixedly arranged on one side of the ball and is in sliding connection with the inner wall of the cylindrical cavity, an installation rod is fixedly arranged below the limiting slide rod, the other end of the installation rod is provided with a sensor, a limiting rod is arranged on the installation rod at the same side as the limiting slide rod, the cylindrical cavity is of a double-layer structure, a limiting groove is formed below one side of the cylindrical cavity close to the limiting rod, a second conductive block is arranged in the limiting groove in a sliding manner, the other end of the second conductive block is arranged in the inner wall of the other layer of the cylindrical cavity in a sliding manner, and the middle of the double-layer structure of the cylindrical, the spring is fixedly arranged in the annular cavity, the other end of the spring is fixedly connected with the second conducting block, the second conducting block is in contact with the first conducting block, the first conducting block is fixedly arranged in the annular cavity, and the first conducting block and the second conducting block form a switch structure and are connected with one switch in series through a wire.

Further, as the optimization, the sealing protection device comprises a mounting ring, a disc and a cleaning device, the mounting ring is fixed below the cylindrical cavity, the disc is fixedly arranged inside the mounting ring, a detection hole is formed in the disc and used for passing through the sensor, a special-shaped gear is coaxially arranged on the disc in a rotating mode, 5 round holes are formed in the same circumference of the special-shaped gear in an array mode, the axis where the circle center of the round hole is located can penetrate through the circle center of the detection hole by rotating the special-shaped gear, 5 rubber seal heads are arranged on the same circumference of the special-shaped gear close to one side of the disc in an array mode, the rubber seal heads are circular, the diameter of each rubber seal head is larger than that of the detection hole, each rubber seal head is arranged between two adjacent round holes, and the axis where the circle center of the rubber seal head is located can penetrate through the circle center of, the special-shaped gear is meshed with the driving gear, the driving gear is rotatably arranged on the gear seat, the gear seat is fixed on the inner wall of the mounting ring, the driving gear is driven by a stepping motor coaxially arranged with the driving gear, and the cleaning devices are symmetrically inserted into the radial direction of the mounting ring along the detection holes.

Further, preferably, the cleaning device comprises a main spray head, clear water or gas is introduced into the main spray head, the other end of the main spray head is communicated with a shunt, and a plurality of auxiliary spray heads are distributed and communicated on the other end of the shunt.

Further, as preferred, two switches are fixed to be set up in driving motor one side and constitute circuit control driving motor's opening with driving motor respectively and stop, the base is the cavity structure, and its inside array is provided with a plurality of bracing pieces.

Compared with the prior art, the invention has the beneficial effects that:

the device has the advantages of stable structure, flexibility, reliability, convenience in disassembly and assembly, strong universality, and convenience in disassembly and assembly, is provided with the sealing protection device, can protect the sensor from being polluted or damaged by processing slag at any time, is additionally provided with the cleaning device, further ensures the cleanness of the sensor, ensures the precision of the sensor and ensures the compensation precision, is additionally arranged in the automatic telescopic device, is automatically controlled, is matched with the sealing protection device, is more intelligent, is provided with the fixing component at the tail part of the base, can be arranged outside most complex machine tools, and is strong in universality.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view A-A of the present invention;

FIG. 3 is a schematic view of the upper mounting assembly of the present invention;

FIG. 4 is a schematic view of a detection assembly of the present invention;

FIG. 5 is a schematic view of the seal protector of the present invention;

FIG. 6 is a schematic view of the contour gear of the present invention;

1. a base; 2. a drive motor; 3. a support bar; 4. a seal protection device; 5. a switch; 6. a fixing assembly; 7. a detection device; 8. an upper fixing assembly; 9. a lower fixing component; 10. mounting lugs; 11. a bolt; 12. a hydraulic master cylinder; 13. a cavity; 14. a hydraulic slave cylinder; 15. a hydraulic lever; 16. pushing the cylinder; 17. a hydraulic push rod; 18. a one-way valve; 19. a hydraulic tube; 20. a dust ring; 21. oil sealing; 22. a piston; 23. a rubber half-round head; 24. a top seat; 25. a cylindrical cavity; 26. a lead screw; 27. a ball bearing; 28. a limiting slide bar; 29. mounting a rod; 30. a sensor; 31. a limiting rod; 32. a first conductive block; 33. a second conductive block; 34. a limiting groove; 35. a wire; 36. a mounting ring; 37. a special-shaped gear; 38. a disc; 39. a gear seat; 40. a driving gear; 41. a detection hole; 42. a main spray head; 43. a flow divider; 44. a secondary spray head; 45. sealing a rubber end; 46. a circular hole.

Detailed Description

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 (b): referring to fig. 1-6, the present invention provides a technical solution: a high-precision positioning tool compensation device for workpiece processing comprises a base 1, wherein one end of the base 1 is connected with a detection assembly, the other end of the base 1 is connected with a fixing assembly 6, the detection assembly is used for detecting the position of a tool and feeding the position back to a control center to adjust the tool, the fixing assembly 6 is used for fixing the base 1 and the detection assembly on a processing device, the fixing assembly 6 is fixed on a processing machine tool, the detection assembly is used for detecting the position of the tool and feeding the position back to the control center initially, the position of the tool is detected again and fed back to the control center after processing for a period of time, the control center compares two sets of data and adjusts the position of the tool, and the machine tool has X, Y and Z-direction adjusting capability so as to adjust the position of the tool.

The fixing assembly 6 comprises an upper fixing assembly 8 and a lower fixing assembly 9, the upper fixing assembly 8 is fixed on one side of the base 1, the lower fixing assembly 9 is not connected with the base 1, the lower fixing assembly 9 is fixed below the upper fixing assembly 8 through a bolt 11 and mounting lugs 10 arranged on two sides of the upper fixing assembly 8 and the lower fixing assembly 9, and the upper fixing assembly 8 and the lower fixing assembly 9 are identical in structure and size; or the lower fixing component 9 is fixed on one side of the base 1, the upper fixing component 8 is not connected with the base 1, and the upper fixing component 8 is fixed above the lower fixing component 9 through a bolt 11 and mounting ears 10 arranged on two sides of the upper and lower fixing components.

On the basis of the above embodiment, the upper fixing component 8 includes a hydraulic master cylinder 12 and a plurality of hydraulic slave cylinders 14 arranged in the hydraulic master cylinder 12, the hydraulic slave cylinders 14 are arranged in the hydraulic master cylinder 12 in a lattice shape, the hydraulic slave cylinders 14 include 4-10 rows of hydraulic slave cylinders 14 arranged horizontally and 6-20 rows of hydraulic slave cylinders 14 arranged longitudinally, the hydraulic slave cylinders 14 are embedded in a cavity 13 of the hydraulic master cylinder 12, one end of the hydraulic slave cylinders 14 close to the cavity 13 is provided with an oil inlet ring, an outlet of the other end of the hydraulic slave cylinders 14 is provided with an oil seal 21 and a dust ring 20, the oil seal 21 is arranged closer to the oil inlet ring than the dust ring 20, a hydraulic rod 15 is arranged in the hydraulic slave cylinders 14 in a sliding manner, one end of the hydraulic rod 15 close to the oil inlet ring is fixedly provided with a piston 22, the other end of the hydraulic rod 15 is fixedly provided with a rubber half-head 23, the rubber semi-circular head 23 can improve the friction force between the rubber semi-circular head and the machine tool.

Further, a pushing cylinder 16 is slidably arranged in a cavity 13 of the hydraulic master cylinder 12, the pushing cylinder 16 is of a revolving body structure and divides the cavity 13 into an upper part and a lower part, a sealing device is arranged at a contact position of the pushing cylinder 16 and the inner wall of the cavity 13, a plurality of hydraulic push rods 17 are arranged on the pushing cylinder 16, the hydraulic push rods 17 are slidably arranged on the hydraulic master cylinder 12, an oil seal 21 and a dust ring 20 are arranged at a contact position of the hydraulic master cylinder 12 and the hydraulic push rods 17, the oil seal 21 is closer to the oil inlet ring relative to the dust ring 20, a plurality of one-way valves 18 are arranged on the hydraulic master cylinder 12, and the one-way valves 18 on the hydraulic master cylinder 12 are arranged in a direction which can enable liquid in the cavity 13 to flow out of the hydraulic master cylinder; the push cylinder 16 is provided with a plurality of one-way valves 18, wherein the one-way valve 18 on the upper half of the push cylinder 16 is communicated with a hydraulic pipe 19, the hydraulic pipe 19 penetrates out of the hydraulic master cylinder 12, the one-way valve 18 connected with the hydraulic pipe 19 is arranged opposite to the one-way valve 18 on the hydraulic master cylinder 12, the other half of the one-way valve 18 on the push cylinder 16 is arranged in the same direction as the one-way valve 18 on the hydraulic master cylinder 12, when the push cylinder 16 is fixed, the upper fixing component 8 and the lower fixing component 9 are respectively sleeved on the upper side and the lower side or the left side and the right side of a machine tool, the bolt 11 is screwed, when the push cylinder initially divides the cavity 13 into two cavities, the push cylinder 16 is positioned in the middle of the cavity 13, the cavity close to the hydraulic slave cylinder 14 contains a large amount of hydraulic oil, the cavity where the hydraulic push rod 17 is located only contains a small amount of hydraulic oil, the hydraulic push rod is pushed by an external, the hydraulic auxiliary cylinder 14 is supplemented with hydraulic oil through the hydraulic pipe 19, so that the upper fixing component 8 and the lower fixing component 9 are fixed on the machine tool, and when the hydraulic oil is supplemented too much, the hydraulic oil flows out to a cavity close to the hydraulic push rod through a one-way valve which is arranged on the push cylinder 16 and is not connected with the hydraulic pipe 19.

In addition, the detection assembly comprises a mounting seat, an automatic telescopic mechanism arranged in the mounting seat, a sensor 30 arranged at the lower part of the automatic telescopic mechanism and a sealing protection device arranged at the lower part of the mounting seat.

The mounting seat comprises a top seat 24 and a cylindrical cavity 25 arranged below the top seat 24, wherein the top seat 24 and the cylindrical cavity 25 are both of a double-layer structure.

In this embodiment, the automatic telescoping mechanism includes a driving motor 2 disposed on a top seat 24, and two switches 5 electrically connected to the driving motor 2, an output shaft of the driving motor 2 passes through the top seat 24 and is connected to a lead screw 26 through a coupling, a ball 27 is disposed on the lead screw 26, a limit slide bar 28 is fixedly disposed on one side of the ball 27, the limit slide bar 28 is slidably connected to an inner wall of a cylindrical cavity 25, a mounting rod 29 is fixedly disposed below the limit slide bar 28, a sensor 30 is disposed at the other end of the mounting rod 29, a limit rod 31 is disposed on the mounting rod 29 at the same side as the limit slide bar 28, the cylindrical cavity 25 is of a double-layer structure, a limit groove 34 is formed below one side of the cylindrical cavity 25 close to the limit rod 31, a second conductive block 33 is slidably disposed in the limit groove 34, and the other end of the second conductive block 33 is slidably disposed in an inner wall of another layer of the cylindrical cavity 25, the middle part of the double-layer structure of the cylindrical cavity 25 is an annular cavity, a spring is fixedly arranged in the annular cavity, the other end of the spring is fixedly connected with a second conductive block 33, the second conductive block 33 is in contact with a first conductive block 32, the first conductive block 32 is fixedly arranged in the annular cavity, the first conductive block 32 and the second conductive block 33 form a switch structure and are connected with one switch 5 in series through a lead 35, the two switches 5 are fixedly arranged on one side of the driving motor 2 and respectively form a circuit with the driving motor 2 to control the start and stop of the driving motor 2, the switch 5 connected with the first conductive block 32 and the second conductive block 33 in series is started to control the driving motor 2 to rotate forwards, so that the limiting slide rod 28 drives the mounting rod 29 to move downwards, when the limiting rod 31 pushes the second conductive block 33 to be far away from the first conductive block 32, the circuit formed by the switch 5 connected with the first conductive block 32 and the second conductive block 33, 2 stall of driving motor, the sensor also moves to the assigned position this moment, guarantee the rigidity that the sensor shifts out at every turn, thereby further guarantee the precision of its detection, after the detection finishes, withdraw the sensor, open another switch 5, two switches 5 are fixed to be set up in driving motor 2 one side and constitute the circuit with driving motor 2 respectively, 2 corotation of one of them circuit control driving motor, the reversal of another circuit control driving motor 2, thereby withdraw the sensor, two other switches 5 all can be integrated on the controller, by controller unified control, the controller is opening of still controllable step motor stops, the controller still links to each other with control center, for the data that its transmission sensor detected.

For better protection sensor, sealed protection device 4 includes collar 36, disc 38 and cleaning device, collar 36 is fixed in the below of cylinder chamber 25, the fixed disc 38 that is provided with in inside of collar 36, be equipped with a detection hole 41 on the disc 38 and be used for passing through sensor 30, coaxial rotation is provided with special-shaped gear 37 on the disc 38, the array is provided with 5 round holes 46 on the same circumference of special-shaped gear 37, can make the axis at the centre of a circle place of round hole 46 pass the centre of a circle of detection hole 41 through rotating special-shaped gear 37, the array is provided with 5 rubber head 45 on the same circumference of special-shaped gear 37 near disc 38 one side, rubber head 45 is circular, the diameter of rubber head 45 is greater than the diameter of detecting hole 41, rubber head 45 sets up between two adjacent round holes 46, and can make the axis at the centre of a circle place of rubber head 45 pass the centre of a circle of detection hole 41 through rotating special-shaped gear 37 The special-shaped gear 37 is engaged with the driving gear 40, the driving gear 40 is rotatably arranged on the gear seat 39, the gear seat 39 is fixed on the inner wall of the mounting ring 36, the driving gear 40 is driven by a stepping motor coaxially arranged with the driving gear 40, a cleaning device is symmetrically inserted into the radial direction of the mounting ring 36 along the detection hole 41, when the sensor moves towards the detection hole 41, the stepping motor operates to control the driving gear 40 to rotate to drive the special-shaped gear 37 to rotate, so that one circular hole on the special-shaped gear 37 moves to the position where the axis of the circle center of the circular hole passes through the circle center of the detection hole 41, so that the sensor can conveniently pass through, when the sensor is withdrawn, the stepping motor operates again to control the driving gear 40 to rotate to drive the special-shaped gear 37 to rotate, so that one rubber seal head 45 on the special-shaped gear 37 moves to the position where the axis of the, the detection hole is blocked, and the sensor is prevented from being polluted or damaged by the slag generated by processing.

In this embodiment, the cleaning device includes main nozzles 42, the main nozzles 42 are connected with clean water or gas, specifically, clean water is connected into one of the main nozzles 42, and gas is connected into the other main nozzle 42, so that the outer surface of the sensor can be cleaned and dried, the sensor is clean and tidy, and the precision of the sensor is ensured, the other end of the main nozzle 42 is connected with a shunt 43, and the other end of the shunt 43 is connected with a plurality of auxiliary nozzles 44 in a distributed manner.

In this embodiment, the base 1 is a cavity structure, and a plurality of support rods 3 are arranged in an array manner inside the base, so that the strength of the base can be ensured while materials are saved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The high-precision positioning tool compensation device for workpiece machining is characterized by comprising a base (1), wherein one end of the base (1) is connected with a detection assembly, the other end of the base is connected with a fixing assembly (6), the detection assembly is used for detecting the position of a tool and feeding the position back to a control center to adjust the tool, and the fixing assembly (6) is used for fixing the base (1) and the detection assembly on a machining device;

the fixing component (6) comprises an upper fixing component (8) and a lower fixing component (9), the upper fixing component (8) is fixed on one side of the base (1), the lower fixing component (9) is not connected with the base (1), the lower fixing component (9) is fixed below the upper fixing component (8) through a bolt (11) and mounting lugs (10) arranged on two sides of the upper and lower fixing components (8,9), and the upper fixing component (8) and the lower fixing component (9) are identical in structure and size;

the upper fixing component (8) comprises a hydraulic master cylinder (12) and a plurality of hydraulic auxiliary cylinders (14) arranged in the hydraulic master cylinder (12), the hydraulic auxiliary cylinders (14) are arranged in the hydraulic master cylinder (12) in a dot matrix manner, the hydraulic auxiliary cylinders (14) comprise 4-10 rows of hydraulic auxiliary cylinders (14) which are transversely arranged and 6-20 rows of hydraulic auxiliary cylinders (14) which are longitudinally arranged, the hydraulic auxiliary cylinders (14) are embedded into a cavity (13) of the hydraulic master cylinder (12), one ends of the hydraulic auxiliary cylinders (14) close to the cavity (13) are provided with oil inlet rings, an outlet at the other ends of the hydraulic auxiliary cylinders (14) is provided with an oil seal (21) and a dust ring (20), the oil seal (21) is arranged close to the oil inlet rings relative to the dust ring (20), hydraulic rods (15) are slidably arranged in the hydraulic auxiliary cylinders (14), and pistons (22) are fixedly arranged at one ends of the hydraulic rods (15) close to the oil inlet rings, the other end of the hydraulic rod (15) is fixedly provided with a rubber semi-circular head (23).

2. The high-precision positioning tool compensation device for workpiece processing according to claim 1, wherein a push cylinder (16) is slidably disposed in a cavity (13) of the hydraulic master cylinder (12), the push cylinder (16) is of a revolving body structure, and divides the cavity (13) into an upper portion and a lower portion, a sealing device is disposed at a contact position of the push cylinder (16) and an inner wall of the cavity (13), a plurality of hydraulic push rods (17) are disposed on the push cylinder (16), the hydraulic push rods (17) are slidably disposed on the hydraulic master cylinder (12), an oil seal (21) and a dust ring (20) are disposed at a contact position of the hydraulic master cylinder (12) and the hydraulic push rods (17), the oil seal (21) is disposed closer to the oil inlet ring than the dust ring (20), a plurality of check valves (18) are disposed on the hydraulic master cylinder (12), and a direction of the check valves (18) on the hydraulic master cylinder (12) can enable liquid in the cavity (13) to flow out to the hydraulic master cylinder An exterior; the push cylinder (16) is provided with a plurality of one-way valves (18), wherein the one-way valves (18) on the upper half of the push cylinder (16) are communicated with a hydraulic pipe (19), the hydraulic pipe (19) penetrates out of the hydraulic master cylinder (12), the one-way valves (18) connected with the hydraulic pipe (19) are arranged in a direction opposite to that of the one-way valves (18) on the hydraulic master cylinder (12), and the other half of the one-way valves (18) on the push cylinder (16) are arranged in the same direction as that of the one-way valves (18) on the hydraulic master cylinder (12).

3. The compensation device for the high-precision positioning tool for workpiece processing according to claim 1, wherein the detection assembly comprises a mounting seat, an automatic telescopic mechanism arranged in the mounting seat, a sensor (30) arranged at the lower part of the automatic telescopic mechanism, and a sealing protection device arranged at the lower part of the mounting seat.

4. The compensation device for the high-precision positioning tool for workpiece processing according to claim 3, wherein the mounting seat comprises a top seat (24) and a cylindrical cavity (25) arranged below the top seat (24), and the top seat (24) and the cylindrical cavity (25) are both of a double-layer structure.

5. The compensation device for the high-precision positioning cutter in workpiece processing according to claim 3 or 4, characterized in that the automatic telescopic mechanism comprises a driving motor (2) arranged on a top seat (24) and two switches (5) electrically connected with the driving motor (2), an output shaft of the driving motor (2) passes through the top seat (24) and is connected with a lead screw (26) through a coupler, a ball (27) is arranged on the lead screw (26), a limit slide rod (28) is fixedly arranged on one side of the ball (27), the limit slide rod (28) is connected with the inner wall of the cylindrical cavity (25) in a sliding manner, a mounting rod (29) is fixedly arranged below the limit slide rod (28), a sensor (30) is arranged at the other end of the mounting rod (29), and a limit rod (31) is arranged on the mounting rod (29) at the same side as the limit slide rod (28), the cylinder cavity (25) is of a double-layer structure, a limiting groove (34) is formed in the lower portion of one side, close to the limiting rod (31), of the cylinder cavity (25), a second conducting block (33) is arranged in the limiting groove (34) in a sliding mode, the other end of the second conducting block (33) is arranged in the inner wall of the other layer of the cylinder cavity (25) in a sliding mode, the middle of the double-layer structure of the cylinder cavity (25) is an annular cavity, a spring is fixedly arranged in the annular cavity, the other end of the spring is fixedly connected with the second conducting block (33), the second conducting block (33) is in contact with the first conducting block (32), the first conducting block (32) is fixedly arranged in the annular cavity, and the first conducting block (32) and the second conducting block (33) form a switch structure and are connected with one switch (5) in series through a lead (35).

6. The compensation device for the high-precision positioning tool for workpiece processing according to claim 3, wherein the sealing protection device (4) comprises a mounting ring (36), a disc (38) and a cleaning device, the mounting ring (36) is fixed below the cylindrical cavity (25), the disc (38) is fixedly arranged inside the mounting ring (36), a detection hole (41) is formed in the disc (38) for passing through the sensor (30), a special-shaped gear (37) is coaxially and rotatably arranged on the disc (38), 5 circular holes (46) are formed in the same circumference of the special-shaped gear (37), an axis where the circle center of the circular hole (46) is located can penetrate through the circle center of the detection hole (41) by rotating the special-shaped gear (37), and 5 rubber seal heads (45) are arranged in the same circumference of the special-shaped gear (37) on one side close to the disc (38), rubber head (45) are circular, the diameter of rubber head (45) is greater than the diameter of detecting hole (41), rubber head (45) set up between two adjacent round hole (46), and can make the axis at the centre of a circle place of rubber head (45) pass the centre of a circle of detecting hole (41) through rotating special-shaped gear (37), special-shaped gear (37) mesh mutually with driving gear (40), driving gear (40) rotate to set up on gear seat (39), gear seat (39) are fixed on the inner wall of collar (36), driving gear (40) are driven by the step motor rather than coaxial setting, the footpath of collar (36) has radially inserted the cleaning device along detecting hole (41) symmetry.

7. The compensation device for the high-precision positioning tool in workpiece processing according to claim 6, wherein the cleaning device comprises a main spray head (42), the main spray head (42) is connected with clean water or gas, the other end of the main spray head (42) is connected with a shunt (43), and the other end of the shunt (43) is connected with a plurality of auxiliary spray heads (44) in an arranging manner.

8. The compensation device for the high-precision positioning cutter in workpiece processing according to claim 1, wherein the two switches (5) are fixedly arranged at one side of the driving motor (2) and respectively form a circuit with the driving motor (2) to control the start and stop of the driving motor (2), the base (1) is of a cavity structure, and a plurality of support rods (3) are arranged in an array in the base.