CN114670059A

CN114670059A - Gear hobbing machine thermal error monitoring system based on gear m value intelligent on-site measurement

Info

Publication number: CN114670059A
Application number: CN202210344728.0A
Authority: CN
Inventors: 邹政; 闵榕城; 陈伟; 陈思喆; 艾靖峰; 蒋海龙
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-28
Anticipated expiration: 2042-04-02
Also published as: CN114670059B

Abstract

The invention relates to a gear hobbing machine thermal error monitoring system based on gear m-value intelligent in-situ measurement, which comprises an information acquisition module and a rotary platform arranged at an information sampling end of the information acquisition module, wherein the rotary platform is used for rotatably supporting a gear; the monitoring system further comprises an operating platform which is arranged on one side of the rotating platform and has a rotating function, and a clamping piece is arranged on the operating platform. This gear hobbing machine thermal error monitoring system based on gear m value intelligence is at position measured uses through information acquisition module, rotary platform, operation platform, the cooperation of pressing from both sides and getting piece and measuring component, and this application technical scheme has reduced the process of artificial measurement gear m value as far as, and the accurate measurement mode of adoption intelligence changes, reduces measuring error from this, improves work efficiency.

Description

Gear hobbing machine thermal error monitoring system based on gear m value intelligent on-site measurement

Technical Field

The invention relates to the technical field of machine tool machining, in particular to a hobbing machine thermal error monitoring system based on intelligent in-situ measurement of a gear m value.

Background

With the continuous development of the times, the field of machine tool machining gradually becomes one of the key directions concerned by contemporary society, wherein when the machine tool machining is performed on a gear, the gear on the transmission mechanism is clamped and placed on a gear bearing platform through a transmission mechanism and a mechanical arm and other structures after the gear is transported to a place to be machined, and at the moment, a pressing piece on the machine tool moves downwards to achieve the purpose of clamping and fixing the gear, and then the gear is further machined.

However, in the actual use process of the above technical solution, some disadvantages gradually appear, and the appearance of the disadvantages causes that the conventional gear processing method cannot meet the high standard use requirement in the present field, and the disadvantages of the conventional gear processing method are specifically described as follows:

in the process of machine tool machining, a machine tool generates and accumulates heat, so that the machine tool generates thermal deformation, and the thermal deformation is directly influenced on the size of a workpiece in the process of gear machining.

Therefore, it is very desirable in the field to design a brand-new gear hobbing machine thermal error monitoring system based on gear m value intelligent in-situ measurement to replace manual measurement of m value.

Disclosure of Invention

In view of this, the present invention provides a thermal error monitoring system for a gear hobbing machine based on intelligent in-situ measurement of a gear m value, so as to solve the problems of measurement errors and low working efficiency when the gear m value is measured manually in the prior art.

The invention is realized by the following technical scheme:

the system for monitoring the thermal error of the gear hobbing machine based on the intelligent in-situ measurement of the m value of the gear comprises an information acquisition module and a rotary platform arranged at an information sampling end of the information acquisition module, wherein the rotary platform is used for rotatably supporting the gear; the monitoring system further comprises an operating platform which is arranged on one side of the rotating platform and has a rotating function, a clamping piece is arranged on the operating platform and used for transferring the gear, and a measuring assembly used for clamping the gear and measuring the m value is further arranged on the operating platform.

Further, the information acquisition module comprises a camera arranged on the machine tool and a microprocessor arranged in the camera, and the camera part of the camera faces to the rotary platform; the rotary platform comprises a fixed base connected with the machine tool and a workbench arranged on the fixed base and having a rotary function, wherein a working identification line is arranged on the fixed base, when the camera captures information of a gear on the rotary platform, whether the line segment from the center of the gear to the tooth top coincides with the working identification line is judged through a microprocessor, the information is sent to an upper computer, and if the two have an angle error, the upper computer sends an instruction command to control the rotation of the workbench.

Furthermore, the measuring assembly comprises two supporting plates which are hinged with each other, wherein an installation platform is arranged at one end of one supporting plate, which is far away from the other supporting plate, and the installation platform is detachably connected with the operating platform; the measuring assembly further comprises a clamping part arranged below the supporting plate and used for clamping the gear, and a measuring module arranged on the supporting plate and used for measuring the m value of the gear.

Further, every the bottom of backup pad is provided with the slide rail to and the cylinder that sets up adjacent with the slide rail, the slip sets the slider on the slide rail, the clamping part is connected with the slider, the piston rod and the slider of cylinder meet, the piston rod of cylinder is flexible, drives the slider and slides on the slide rail to reach and carry out driven purpose to the clamping part, order about the clamping part and press from both sides tightly the gear.

Further, the clamping part comprises a clamping rod and a mounting plate detachably connected with the sliding block, a sleeve is arranged at the bottom of the mounting plate and is of a hollow structure with an open bottom, a threaded hole communicated with the interior of the sleeve is formed in the sleeve, at least part of the clamping rod extends to the interior of the sleeve, a locking screw is arranged on the threaded hole in a threaded mode, and the locking screw extends to the interior of the threaded hole until the locking screw abuts against the clamping rod.

Furthermore, a lightening hole is formed in the mounting plate.

Further, the backup pad runs through along its thickness direction and has seted up two at least cylinder of being convenient for and carry out the installation preformed hole of installing.

Furthermore, two the relative one end of backup pad is provided with respectively accepts the board, and two accept the board and coincide from top to bottom and correspond, it has seted up the through-hole to accept the plate thickness direction and run through, and has set clamping screw on this through-hole, the last screw thread of clamping screw has set lock nut, the handing-over department of clamping screw and accepting the board is provided with first gasket, lock nut is provided with the second gasket with the handing-over department of accepting the board.

Furthermore, the measuring module comprises a laser displacement sensor which is detachably arranged on one of the mounting plates, and a laser reflecting plate which is detachably arranged on the other mounting plate, and the information output end of the laser displacement sensor is in information transmission connection with an upper computer.

Further, the mount table includes the stiff end that meets with operation platform and installs perpendicularly in the installation end at stiff end top, the opening has been seted up along its direction of height to the installation end runs through, with the backup pad that the mount table is adjacent, its tip is provided with the extension that extends to the inside of opening, and the one end that this extension deviates from the backup pad is provided with the limiting plate, the top of stiff end is provided with elevating gear, meets with the backup pad that the mount table is adjacent and elevating gear's lift end.

The invention has the beneficial effects that:

the hobbing machine thermal error monitoring system based on gear m value intelligent on-site measurement comprises an information acquisition module, a rotary platform, an operation platform, a clamping piece and a measuring assembly, wherein the information acquisition module is used for transferring a gear to the rotary platform through the clamping piece, after the gear is machined, the information acquisition module judges the position of the gear and transmits the information to an upper computer, the upper computer controls the rotary platform to rotate so as to meet the requirement for measuring the gear m value, and then the m value of the gear to be measured is measured under the action of the measuring assembly The purpose of judgement, the process of artificially measuring gear m value has been reduced as far as to this application technical scheme, and the accurate measuring mode of adoption intelligence from this reduces measuring error, improves work efficiency.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a partial perspective view of the present invention;

FIG. 2 is a partial perspective view of a measurement assembly and mounting table of the present invention;

FIG. 3 is a partial perspective view of the measurement assembly and mounting table of the present invention II;

FIG. 4 is a partial perspective view of a measurement assembly and mounting table of the present invention;

FIG. 5 is a partial schematic view of an information acquisition module of the present invention;

FIG. 6 is a schematic diagram of the coincidence of the identification line and the virtual line segment according to the present invention;

FIG. 7 is a schematic diagram illustrating that the mark line and the virtual line segment are not overlapped;

fig. 8 is a schematic diagram of partial information transmission according to the present invention.

In the figure: 1. a machine tool; 2. an information acquisition module; 201. a camera; 202. a camera; 203. a microprocessor; 3. rotating the platform; 301. a fixed base; 302. a work table; 4. an operating platform; 5. clamping the workpiece; 6. a measurement assembly; 601. a support plate; 602. a slide rail; 603. a slider; 604. a cylinder; 7. a clamping portion; 701. mounting a plate; 702. a sleeve; 703. a clamping bar; 8. marking a line; 9. a virtual line segment; 10. a gear; 11. lightening holes; 12. mounting a preformed hole; 13. a bearing plate; 14. fixing the screw rod; 15. locking the nut; 16. a first gasket; 17. a measurement module; 1701. a laser displacement sensor; 1702. a laser reflecting plate; 18. a limiting plate; 19. an installation table; 1901. an installation end; 1902. a fixed end; 20. a port; 21. an extension portion; 22. a lifting device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the above description of the present invention, it should be noted that the terms "one side", "the other side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Further, the term "identical" and the like do not mean that the components are absolutely required to be identical, but may have slight differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be perfectly perpendicular, but may be slightly inclined.

Referring to fig. 1-8, the present invention provides a technical solution: the system for monitoring the thermal error of the gear hobbing machine based on the intelligent in-situ measurement of the m value of the gear comprises an information acquisition module 2 and a rotary platform 3 arranged at an information sampling end of the information acquisition module 2, wherein the rotary platform 3 is used for rotatably supporting a gear 10, an information output end of the information acquisition module 2 is in information transmission connection with a remote terminal upper computer, and an information output end of the upper computer is in information transmission connection with the rotary platform 3 and is used for controlling the rotary platform 3 to rotate; the monitoring system also comprises an operating platform 4 which is arranged on one side of the rotating platform 3 and has a rotating function, the operating platform is not connected with a machine tool but is independent of the machine tool, a mechanism is arranged outside a machine tool outer cover, a clamping piece 5 is arranged on the operating platform 4, the gear 10 is transferred through the clamping piece 5, and a measuring component 6 for clamping the gear 10 and measuring an m value is also arranged on the operating platform 4;

what needs to be firstly stated here is how the machine tool processes the gear, and the installation and use of the operating platform, the clamping piece and the rotating platform are all prior art in the field at present, and how to use the structure specifically when processing the gear is all mature technology in the field, so that the present application does not need to be described in detail, the operating platform and the rotating platform can be used by adopting prior art such as a steering engine, and the clamping piece can be selected to be a finger cylinder;

when a machine tool is used for processing a gear, a clamping piece firstly clamps a gear blank on a production line (similar to a belt pulley mechanism for transmitting the gear), an operation platform rotates at the moment, the clamping piece clamping the gear blank is rotated to the position above the rotation platform, the clamping piece loosens the gear at the moment, so that the clamping piece is positioned above the rotation platform, a propping piece (the prior art) is driven to move to the rotation platform by adopting a hydraulic cylinder or other prior arts until the gear is propped, and then the daily processing work can be started;

after the gear is machined, the abutting piece moves towards one end far away from the rotating platform, at the moment, the machined gear is in a movable state, the operating platform rotates again, the operating platform drives the measuring assembly to rotate to the position above the rotating platform, then the gear is clamped firstly, then the m value of the initially machined gear is measured, the data is transmitted to the upper computer, then in the subsequent gear machining process, after the machining is finished, the measuring assembly clamps the subsequent gear again and measures the m value, the data is transmitted to the upper computer, the upper computer compares the m values of the front gear and the rear gear, when the m values of the two gears have an error (more than or equal to 20 microns), the gear machining is stopped, the machine tool is adaptively adjusted and corrected, after the m value is measured, the operating platform rotates reversely again, and the clamping piece continuously clamps the gear to be machined to the position above the rotating platform, subsequent processing work is then orderly normally gone on, after processing finishes, reuse measuring component to carry out the m value measurement of gear to the transmission information to the host computer with the gear of initial processing compare can, this is endless operation mode, and technical personnel in the art still can set for measuring component, need not to measure every gear, can process 3-5 gears after (concrete operation, the field judges according to the real-time condition and selects can), reuse measuring component carries out the m value measurement to the gear also, this reducible work load improves work efficiency.

In this embodiment: the information acquisition module 2 comprises a camera 201 installed on the machine tool 1 and a microprocessor 203 arranged in the camera 201, wherein the camera 202 part of the camera 201 faces the rotary platform 3; the rotary platform 3 comprises a fixed base 301 connected with the machine tool 1 and a workbench 302 arranged on the fixed base 301 and having a rotary function, wherein a working identification line 8 is arranged on the fixed base 301, when the camera 202 captures information of the gear 10 on the rotary platform 3, the microprocessor 203 judges whether a line segment from the circle center of the gear 10 to the tooth top is overlapped with the working identification line 8 or not and sends the information to an upper computer, and if the angle error exists between the line segment and the working identification line, the upper computer sends an instruction command to control the workbench 302 to rotate;

the line segment from the circle center of the gear to the tooth top can be defined as a virtual line segment 9, wherein after the gear is placed at the top of the rotary platform, the camera acquires information of the gear, judges whether a working identification line and an adjacent virtual line segment are in a superposition state through a microprocessor, and then sends the information to an upper computer to serve as a judgment basis for the upper computer to send a working instruction to the rotary platform;

through this embodiment, after guaranteeing that the relative position of gear is correct, process it again, can improve the precision of processing, the length direction looks perpendicular of work sign line and lathe.

In this embodiment: the measuring assembly 6 comprises two supporting plates 601 hinged to each other, wherein one end of one supporting plate 601 facing away from the other supporting plate 601 is provided with a mounting platform 19, and the mounting platform 19 is detachably connected with the operating platform 4, and the two supporting plates are further limited to be hinged to each other, so that when the number of teeth of the gear is odd, the relative angle of the two supporting plates is adjusted, so that when the gear is clamped by a clamping rod, the clamping rod is positioned on a diameter line of the gear but not on a non-diameter line of the gear, thereby further ensuring the stability when the gear is clamped, and when the gear with even number of teeth needs to be clamped, the two supporting plates are parallel, and the detachable mounting mode (which can be in bolt connection) of the mounting platform and the operating platform is provided in the embodiment, so that when the measuring assembly is damaged, the device can be disassembled, maintained and replaced immediately; the measuring assembly 6 further comprises a clamping portion 7 arranged below the support plate 601 for clamping the gear 10, and a measuring module 17 arranged on the support plate 601 for measuring the m value of the gear.

The bottom of each supporting plate 601 is provided with a sliding rail 602 and an air cylinder 604 adjacent to the sliding rail 602, a sliding block 603 is arranged on the sliding rail 602 in a sliding manner, the clamping portion 7 is connected with the sliding block 603, a piston rod of the air cylinder 604 is connected with the sliding block 603, and the piston rod of the air cylinder 604 extends and retracts to drive the sliding block 603 to slide on the sliding rail 602, so that the purpose of driving the clamping portion 7 is achieved, and the clamping portion 7 is driven to clamp the gear 10.

The clamping part 7 comprises a clamping rod 703 and a mounting plate 701 detachably connected with the sliding block 603, the detachable mounting mode is that when the clamping part needs to be replaced, the mounting plate can be detached and separated from the sliding block immediately, the detachable mounting mode mentioned in this embodiment can be a bolt connection mode, the bottom of the mounting plate 701 is provided with a sleeve 702, the sleeve 702 is of a hollow structure with an open bottom, a threaded hole communicated with the inside of the sleeve 702 is formed in the sleeve 702, at least part of the clamping rod 703 extends into the sleeve 702, a locking screw is arranged on the threaded hole in a threaded manner and extends into the threaded hole until the locking screw abuts against the clamping rod 703, the embodiment further defines the mounting mode of the clamping rod, the purpose is that when a single part of the clamping rod is damaged, the clamping rod can be detached and replaced directly, and the clamping rod extends into the sleeve, the locking screw is rotated to the inner side of the threaded hole by utilizing the thread of the locking screw, and the clamping rod is supported tightly;

after gear machining finishes, at first operation platform is rotatory, rotates measuring component to rotary platform's top, and the cylinder begins work this moment, and it orders about the slider through the motion of piston rod and slides on the slide rail, then can drive the clamping bar from this and move to reach and utilize relative motion's clamping bar to carry out the centre gripping to the gear, after gear centre gripping finishes, measuring module measures the m value of gear, and with this information transmission to the host computer.

In this embodiment: the mounting plate 701 is provided with lightening holes 11, and the lightening holes are formed in the mounting plate, so that the weight of the mounting plate in the using process is reduced, the working pressure of the cylinder is reduced, and the load of the cylinder is reduced.

In this embodiment: the supporting plate 601 is provided with at least two mounting holes 12 along the thickness direction, which are convenient for the cylinder 604 to mount, and more mounting holes are provided here, so as to satisfy the adjustability of the mounting position of the cylinder as much as possible.

In this embodiment: the opposite ends of the two support plates 601 are respectively provided with a bearing plate 13, the two bearing plates 13 are in up-down coincidence correspondence, a through hole is arranged in the thickness direction of the bearing plate 13 in a penetrating way, a fixing screw 14 is arranged on the through hole in a matching way, a locking nut 15 is arranged on the screw thread of the fixing screw 14, a first gasket 16 is arranged at the joint of the fixing screw 14 and the bearing plate 13, a second gasket is arranged at the joint of the locking nut 15 and the bearing plate 13, when the relative position of the two support plates needs to be adjusted, the locking nut can be loosened firstly to enable the fixing screw to be in a movable state, the two support plates are relatively rotated to enable the two support plates to have corresponding angles, and then the locking nut is screwed, the first gasket and the second gasket mentioned herein are used for reducing the friction force of the fixing screw and the locking nut on the support plates and avoiding the damage of the support plates as much as possible, first gasket and second gasket can adopt the rubber material, as to what kind of angle with two backup pads rotation, this can be according to the real-time condition carry out artificial judgement, regulation, try, rotate can.

In this embodiment: the measuring module 17 comprises a laser displacement sensor 1701 which is detachably mounted on one of the mounting plates 701, and a laser reflecting plate 1702 which is detachably mounted on the other mounting plate 701, wherein the information output end of the laser displacement sensor 1701 is in information transmission connection with an upper computer, the laser displacement sensor and the laser reflecting plate are further limited and arranged, and further explained, the laser displacement sensor and the laser reflecting plate are respectively detachably mounted on the mounting plates, so that the laser displacement sensor and the laser reflecting plate can slide along with the sliding block when the mounting plates slide along with the sliding block, thereby improving the measuring precision value as much as possible, the laser displacement sensor records the real-time distance between the laser displacement sensor and the laser reflecting plate according to the position adjustment of the real-time situation, thereby achieving the purpose of intelligently measuring the m value of the gear, and when the laser displacement sensor is damaged, the laser displacement sensor can be repaired and replaced after being detached from the mounting plate, and the type of the laser displacement sensor can be GV-H45.

In this embodiment: the mounting table 19 comprises a fixed end 1902 connected with the operating platform 4 and a mounting end 1901 vertically mounted on the top of the fixed end 1902, the mounting end 1901 is perforated with a through hole 20 along the height direction thereof, the supporting plate 601 adjacent to the mounting table 19 is provided with an extension 21 extending into the through hole 20 at the end thereof, a limiting plate 18 is arranged at one end of the extension 21 departing from the supporting plate 601, a lifting device 22 is arranged on the top of the fixed end 1902, and the supporting plate 601 adjacent to the mounting table 19 is connected with the lifting end of the lifting device 22;

the lifting device mentioned in this embodiment may also be selected as an air cylinder, an electric cylinder, or other prior art as needed, where the lifting device may drive the supporting plate to lift, and when the supporting plate lifts, the extending plate freely lifts inside the opening to avoid the supporting plate from shaking randomly during the lifting process, and a limiting plate is further disposed here to avoid the extending plate from slipping out of the inside of the opening, the fixed end is detachably connected to the operating platform, and the lifting end (which may be a piston rod of the air cylinder) of the lifting device is connected to the bottom of the adjacent supporting plate by a bolt;

the further elevating gear, opening, installation end, stiff end, limiting plate and the extension of being provided with of this embodiment, its purpose is when gear thickness is thicker, the relative height of adjustable clamping bar for the clamping bar is laminated mutually as much as possible with the gear along the thickness direction of gear, thereby improves the centre gripping stability to the gear as far as, and need further explain here, the clamping bar is stretched into the tooth root department between two adjacent teeth of a cogwheel, improves the clamping-force to the gear from this as far as.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. Gear hobbing machine thermal error monitoring system based on gear m value intelligence is at position measurement, its characterized in that: the gear transmission device comprises an information acquisition module (2) and a rotary platform (3) arranged at an information sampling end of the information acquisition module (2), wherein the rotary platform (3) is used for rotatably supporting a gear (10), an information output end of the information acquisition module (2) is in information transmission connection with a remote terminal upper computer, and an information output end of the upper computer is in information transmission connection with the rotary platform (3) and is used for controlling the rotary platform (3) to rotate; the monitoring system further comprises an operating platform (4) which is arranged on one side of the rotating platform (3) and has a rotating function, a clamping piece (5) is arranged on the operating platform (4), the clamping piece (5) is used for transferring the gear (10), and a measuring assembly (6) which is used for clamping the gear (10) and measuring an m value is further arranged on the operating platform (4).

2. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 1, characterized in that: the information acquisition module (2) comprises a camera (201) arranged on the machine tool (1) and a microprocessor (203) arranged in the camera (201), and the camera (202) of the camera (201) faces the rotary platform (3); rotary platform (3) include fixed baseplate (301) that are connected with lathe (1) to and set up workstation (302) that have rotation function on fixed baseplate (301), be provided with work identification line (8) on fixed baseplate (301), work as when camera (202) carry out information capture to gear (10) on rotary platform (3), judge through microprocessor (203) whether the line segment of gear (10) centre of a circle to the top of the tooth coincides with work identification line (8), and send this information to the host computer, when if the two has angle error, the host computer sends instruction command control workstation (302) and rotates.

3. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 2, characterized in that: the measuring assembly (6) comprises two supporting plates (601) which are hinged to each other, wherein one end, which is far away from the other supporting plate (601), of one supporting plate (601) is provided with a mounting table (19), and the mounting table (19) is detachably connected with the operating platform (4); the measuring assembly (6) further comprises a clamping part (7) arranged below the supporting plate (601) and used for clamping the gear (10), and a measuring module (17) arranged on the supporting plate (601) and used for measuring the m value of the gear.

4. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 3, characterized in that: the bottom of each supporting plate (601) is provided with a sliding rail (602) and an air cylinder (604) arranged adjacent to the sliding rail (602), a sliding block (603) is arranged on the sliding rail (602) in a sliding mode, the clamping portion (7) is connected with the sliding block (603), a piston rod of the air cylinder (604) is connected with the sliding block (603), and a piston rod of the air cylinder (604) stretches and retracts to drive the sliding block (603) to slide on the sliding rail (602), so that the purpose of driving the clamping portion (7) is achieved, and the clamping portion (7) is driven to clamp the gear (10).

5. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 4, characterized in that: the clamping part (7) comprises a clamping rod (703) and a mounting plate (701) which is detachably connected with the sliding block (603), a sleeve (702) is arranged at the bottom of the mounting plate (701), the sleeve (702) is of a hollow structure with an open bottom, a threaded hole communicated with the interior of the sleeve (702) is formed in the sleeve (702), at least part of the clamping rod (703) extends to the interior of the sleeve (702), a locking screw is arranged on the threaded hole in a threaded mode, and the locking screw extends to the interior of the threaded hole until the locking screw abuts against the clamping rod (703).

6. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 5, characterized in that: the mounting plate (701) is provided with a lightening hole (11).

7. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of any one of claims 3-6, characterized in that: the supporting plate (601) penetrates through the supporting plate in the thickness direction to be provided with at least two installation preformed holes (12) which are convenient for the air cylinder (604) to install.

8. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 7, characterized in that: two the relative one end of backup pad (601) is provided with respectively accepts board (13), and two accept board (13) and be upper and lower coincidence and correspond, the thickness direction of accepting board (13) runs through and has seted up the through-hole, and has set clamping screw (14) on this through-hole, clamping screw (14) are gone up the screw thread and have been set lock nut (15), clamping screw (14) and the handing-over department of accepting board (13) are provided with first gasket (16), lock nut (15) and the handing-over department of accepting board (13) are provided with the second gasket.

9. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 7, characterized in that: the measuring module (17) comprises a laser displacement sensor (1701) which is detachably mounted on one of the mounting plates (701) and a laser reflecting plate (1702) which is detachably mounted on the other mounting plate (701), and an information output end of the laser displacement sensor (1701) is in information transmission connection with an upper computer.

10. The gear hobbing machine thermal error monitoring system based on intelligent in-place measurement of gear m value of claim 7, characterized in that: mount table (19) include stiff end (1902) and the perpendicular installation in the installation end (1901) at stiff end (1902) top that meet with operation platform (4), opening (20) have been seted up in its direction of height to installation end (1901) running through along its direction of height, with adjacent backup pad (601) of mount table (19), its tip is provided with and extends to inside extension (21) of opening (20), and the one end that deviates from backup pad (601) in this extension (21) is provided with limiting plate (18), the top of stiff end (1902) is provided with elevating gear (22), and the lift end that backup pad (601) and elevating gear (22) adjacent with mount table (19) meets.