A positioning tool for machining the end face of a worm gear shaft

Abstract

The present invention discloses a positioning tool for processing the end face of a worm gear shaft, which relates to the technical field of worm gear shaft processing, and includes: a balancing component, wherein the balancing component includes a supporting base plate, and laser rangefinders are arranged at the top of the supporting base plate near both sides. The positioning tool for processing the end face of a worm gear shaft, after placing the shaft rod stably, emits a laser beam through two laser rangefinders, and the laser beam passes through the holes on the surface of the supporting base plate and is projected onto the surface of the shaft rod to be processed, and the measurement results of the two laser rangefinders are monitored. When the heights measured by the two laser rangefinders are different, an abnormal signal is transmitted to an external control system, and two hydraulic cylinders are raised and lowered respectively, and two connecting blocks are driven to adjust up and down respectively, so that the shaft rod is kept balanced, and the end face processing is not neat due to tilting during positioning, and the problem of being unable to automatically adjust the balance is solved.

Description

Technical Field

[0001] The invention relates to the technical field of worm gear shaft processing, in particular to a positioning tool for processing the end face of a worm gear shaft. Background Art

[0002] The worm gear shaft is the rotating shaft of the worm gear rotor in the gas worm gear engine. The worm gear shaft is usually used in worm gear engines and other equipment. When processing the end face of the worm gear shaft, a milling machine tool is required to ensure the processing quality, and the surface of the part needs to be processed before processing to obtain higher surface roughness and dimensional accuracy. The end face of the worm gear shaft usually requires a variety of processing, such as keyways, threaded holes, etc., for connection with other components. Milling is one of the more common methods for processing the end face of the worm gear shaft.

[0003] In the prior art, for example, Chinese patent number: CN219503776U discloses a positioning fixture for machining the end face of a worm gear shaft, wherein the base is connected to the workbench of a gang tool lathe; the positioning plate and the positioning seat are both arranged on the base; the pressing plate is provided with a clamping groove corresponding to the shape of the V-shaped groove of the positioning plate; one end of the worm gear shaft is inserted into the through hole of the positioning seat, and its shaft rod is placed in the V-shaped groove of the positioning plate, and the worm gear shaft is clamped on the side end face of the positioning plate for positioning, and the pressing plate is arranged at the upper end of the worm gear shaft; the shaft rod at the upper end is arranged in the clamping groove, and the clamping screw is inserted into the screw hole of the pressing plate and the screw hole of the positioning plate to clamp and fix the worm gear shaft, and a washer is arranged between the clamping screw and the pressing plate; the milling cutter is provided with a replaceable blade, and the milling cutter is clamped by a three-jaw chuck to perform end face machining on the worm gear shaft arranged on the positioning fixture. The positioning fixture of the present invention has a simple structure and is easy to install.

[0004] Usually, during the production process, the worm gear shaft needs to be placed on a positioning device during processing to facilitate milling of its end face. However, the existing positioning method only sets up the worm gear shaft without detecting its balance. When the worm gear shaft is unstable, it cannot be automatically adjusted, which will cause the worm gear shaft to shift in position during milling, affecting the quality of the finished product.

[0005] Therefore, we proposed a positioning tool for machining the end face of the worm gear shaft in order to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a positioning tool for machining the end face of a worm gear shaft, so as to solve the problem raised in the above background technology that the existing worm gear shaft cannot automatically adjust the positioning balance during machining, thereby affecting the quality of the finished product.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning tool for processing the end face of a worm gear shaft, comprising: a balancing assembly, wherein the balancing assembly comprises a supporting base plate, laser rangefinders are arranged at the top of the supporting base plate near both sides, hydraulic cylinders are arranged at the top of the supporting base plate near both sides, the tops of the two hydraulic cylinders are fixedly connected with connecting blocks, the outer surfaces of the two connecting blocks are provided with movable notches, the top of the supporting base plate is fixedly connected with two supporting side plates, the outer surfaces of the two supporting side plates are provided with rotating holes, the inner walls of the two rotating holes are rotatably connected with rotating shafts, a balancing plate is fixedly connected between the two rotating shafts, the top of the balancing plate is provided with installation areas near both sides, and limiting rods are fixedly connected between the inner walls of the two installation areas, and each limiting rod is respectively arranged inside each movable notch; a positioning assembly, wherein two positioning assemblies are provided, and the two positioning assemblies are respectively fixedly connected to the tops of the two connecting blocks.

[0008] Preferably, a stopper is fixedly connected to one end of each rotating shaft that is away from the other end, anti-sliding blocks are fixedly connected to the bottom of the supporting base plate near both sides, and an active area is provided in the middle of the top of the balancing board.

[0009] Preferably, a transposition assembly is fixedly connected to the top of the support base plate between the two support side plates, and the transposition assembly includes a fixing frame and a forward and reverse motor, and the forward and reverse motor is arranged on the support base plate.

[0010] Preferably, the fixing frame is located between the inner walls of the activity area, a connecting hole is provided on the top of the fixing frame, an I-beam is rotatably connected to the inner wall of the connecting hole, and the output shaft of the forward and reverse motor is fixedly connected to the bottom of the I-beam.

[0011] Preferably, a hydraulic rod is arranged on the top of the I-beam, a lifting frame is fixedly connected to the top end of the hydraulic rod, a lifting groove is provided on the top of the lifting frame, and the cross section of the lifting groove is arranged in an arc shape.

[0012] Preferably, the positioning assembly includes a reinforcement frame, a fixing plate is fixedly connected to the bottom of the reinforcement frame, an auxiliary plate is fixedly connected between the inner walls of the reinforcement frame, an auxiliary groove is opened on the top of the reinforcement frame, and an electric push rod is arranged on the inner bottom surface of the auxiliary groove.

[0013] Preferably, the top of the reinforcement frame is fixedly connected to a shell, and limited areas are provided on the tops of both sides of the shell. The top of the electric push rod is fixedly connected to an active splint, and both sides of the active splint are fixedly connected to side thrust wings, and the outer surface of each side thrust wing is fixedly connected to a magnetic plate.

[0014] Preferably, two positioning plates are fixedly connected between the relative inner walls of the shell near the bottom, two anti-deflection plates are fixedly connected between the relative inner walls of the shell near the top, the active splint is simultaneously arranged between the opposite sides of the two anti-deflection plates and the opposite sides of the two positioning plates, a first positioning rod is fixedly embedded in the top of the active splint, the outer surface of the first positioning rod is rotatably connected to the first rotating drum, and the outer surface of the first rotating drum is fixedly connected to the first rubber sleeve.

[0015] Preferably, fixing rods are fixedly connected to the opposite sides of the shell, and the outer surface of each fixing rod is rotatably connected to a driven splint, the top of each driven splint is fixedly embedded with a second positioning rod, the outer surface of each second positioning rod is rotatably connected to a second rotating cylinder, the outer surface of each second rotating cylinder is fixedly connected to a second rubber sleeve, the bottom of each driven splint is fixedly embedded with a third positioning rod, the outer surface of each third positioning rod is rotatably connected to a third rotating cylinder, the outer surface of each third rotating cylinder is fixedly connected to a magnetic sleeve, and the outer surface of each magnetic sleeve is magnetically connected to the outer surface of each magnetic plate.

[0016] Preferably, a shaft rod is placed on the inner wall of the lifting groove, and the outer surfaces of the two second rubber sleeves and the outer surface of the first rubber sleeve are in contact with the outer surface of the shaft rod at the same time.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When in use, after placing the shaft rod steadily, two laser rangefinders emit laser beams, which pass through the holes on the surface of the supporting base plate and are projected onto the surface of the shaft rod to be processed. The measurement results of the two laser rangefinders are monitored. When the heights measured by the two laser rangefinders are different, the abnormal signal is transmitted to the external control system. The two hydraulic cylinders are raised and lowered respectively, driving the two connecting blocks to adjust up and down respectively, so that the shaft rod remains balanced, avoiding tilting during positioning and uneven end surface processing, and solving the problem of being unable to automatically adjust the balance.

[0019] 2. During use, after one end of the shaft is processed, the hydraulic rod is started to rise, thereby driving the lifting frame to rise, so that the middle part of the shaft is located inside the lifting slot, and then continues to rise. After the shaft is completely raised, the forward and reverse motors are started to rotate the output shafts of the forward and reverse motors, thereby driving the I-beam to rotate inside the connecting hole, and then driving the lifted shaft to rotate, so that the two ends of the shaft switch directions, and then the hydraulic rod is started again to descend until the two ends of the shaft are put back into the two positioning components and the outer surface of the shaft is detached from the inside of the lifting slot, thereby achieving the purpose of automatically changing the direction of the processed end face.

[0020] 3. During use, when the shaft is clamped, first place the shaft between a first rotating cylinder and two second rotating cylinders, and start the electric push rod to drive the active clamping plate and the first rotating cylinder on its top to push upward, and the inclined surfaces of the two side push wings will push the two third rotating cylinders upward. At this time, the two magnetic sleeves are magnetically connected to the magnetic plate, so that the magnetic sleeves and the magnetic plate can remain connected. Using the lever principle, the driven clamping plate rotates with the fixed rod as the rotation center, then the two second rotating cylinders and the first rotating cylinder move toward the shaft at the same time, so that the shaft can be clamped. At this time, the first rubber sleeve and the two second rubber sleeves are in direct contact with the surface of the shaft. The soft and non-slip material can not only protect the surface of the shaft to prevent scratches on its surface, but also improve the stability of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A side perspective view of a positioning tool for machining the end face of a worm gear shaft according to the present invention;

[0022] Figure 2 A bottom perspective view of a positioning tool for machining the end face of a worm gear shaft according to the present invention;

[0023] Figure 3 It is a perspective view of the partial structure of a balancing component of a positioning tool for machining the end face of a worm gear shaft according to the present invention;

[0024] Figure 4 A partially cutaway stereoscopic view of a connecting block of a positioning tool for machining an end face of a worm gear shaft according to the present invention;

[0025] Figure 5 It is a side perspective view of a positioning component part of a positioning tool for machining the end face of a worm gear shaft according to the present invention;

[0026] Figure 6 It is a partial cutaway stereoscopic view of a positioning assembly of a positioning tool for machining an end face of a worm gear shaft according to the present invention;

[0027] Figure 7 It is a sectional perspective view of a partial structure of a positioning assembly of a positioning tool for machining an end face of a worm gear shaft according to the present invention;

[0028] Figure 8 The present invention is a three-dimensional diagram of the partial structure of a transposition component of a positioning tool for machining the end face of a worm gear shaft.

[0029] In the figure:

[0030] 1. Balancing assembly; 101. Supporting bottom plate; 102. Hydraulic cylinder; 103. Connecting block; 104. Movable notch; 105. Laser rangefinder; 106. Supporting side plate; 107. Rotating hole; 108. Movable area; 109. Balancing plate; 110. Rotating shaft; 111. Stopper; 112. Mounting area; 113. Limiting rod; 114. Anti-sliding block; 2. Transposition assembly; 201. Fixing frame; 202. Forward and reverse motor; 203. Connecting hole; 204. I-bench; 205. Hydraulic rod; 206. Lifting frame; 207. Lifting slot; 3. Positioning assembly; 301. Housing ; 302, reinforcement frame; 303, driven clamp; 304, active clamp; 305, limit area; 306, fixed plate; 307, auxiliary plate; 308, electric push rod; 309, positioning plate; 310, side thrust wing; 311, magnetic plate; 312, anti-bias plate; 313, fixing rod; 314, first rubber sleeve; 315, second rubber sleeve; 316, auxiliary groove; 317, first positioning rod; 318, first rotating drum; 319, second rotating drum; 320, second positioning rod; 321, third positioning rod; 322, third rotating drum; 323, magnetic suction sleeve; 4, shaft rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-8 The present invention provides a technical solution: a positioning tool for processing the end face of a worm gear shaft, comprising: a balancing assembly 1, the balancing assembly 1 comprises a supporting base plate 101, a laser rangefinder 105 is arranged near both sides of the top of the supporting base plate 101, a hydraulic cylinder 102 is arranged near both sides of the top of the supporting base plate 101, the tops of the two hydraulic cylinders 102 are fixedly connected with connecting blocks 103, the outer surfaces of the two connecting blocks 103 are provided with movable notches 104, the top of the supporting base plate 101 is fixedly connected with two supporting side plates 106, and the two supporting The outer surfaces of the side plates 106 are each provided with a rotating hole 107, the inner walls of the two rotating holes 107 are rotatably connected with a rotating shaft 110, a balancing plate 109 is fixedly connected between the two rotating shafts 110, the top of the balancing plate 109 is provided with an installation area 112 near both sides, and a limiting rod 113 is fixedly connected between the inner walls of the two installation areas 112, and each limiting rod 113 is respectively arranged inside each movable notch 104; a positioning assembly 3, two positioning assemblies 3 are arranged, and the two positioning assemblies 3 are respectively fixedly connected to the tops of the two connecting blocks 103.

[0033] like Figure 1-4 As shown, a stopper 111 is fixedly connected to the far end of each rotating shaft 110, and anti-sliding blocks 114 are fixedly connected to the bottom of the supporting base plate 101 near both sides. An active area 108 is opened in the middle of the top of the balance plate 109, which is blocked by the stopper 111 to prevent it from falling off from the inside of the rotating hole 107, thereby having a protective effect. Both anti-sliding blocks 114 are made of anti-slip material made of hard rubber, which can effectively prevent the positioning device from shifting in position when in use.

[0034] like Figure 1-4 and Figure 8 As shown, the top of the supporting base plate 101 is located between the two supporting side plates 106 and is fixedly connected with a transposition component 2, which includes a fixing frame 201 and a forward and reverse motor 202. The forward and reverse motor 202 is arranged on the supporting base plate 101, and the fixing frame 201 can protect the forward and reverse motor 202.

[0035] like Figure 1-4 and Figure 8 As shown, the fixed frame 201 is located between the inner walls of the active area 108, and a connecting hole 203 is opened on the top of the fixed frame 201. The inner wall of the connecting hole 203 is rotatably connected to an I-beam 204. The output shaft of the forward and reverse motor 202 is fixedly connected to the bottom of the I-beam 204. By starting the forward and reverse motor 202, the output shaft of the forward and reverse motor 202 rotates, thereby driving the I-beam 204 to rotate inside the connecting hole 203, and then driving the lifted shaft rod 4 to rotate, so that the two ends of the shaft rod 4 swap directions.

[0036] like Figure 1-4 and Figure 8 As shown, a hydraulic rod 205 is arranged on the top of the I-beam 204, and a lifting frame 206 is fixedly connected to the top of the hydraulic rod 205. A lifting groove 207 is provided on the top of the lifting frame 206, and the cross section of the lifting groove 207 is arranged in an arc shape. By starting the hydraulic rod 205, the hydraulic rod 205 is raised, thereby driving the lifting frame 206 to rise, so that the middle part of the shaft rod 4 is located inside the lifting groove 207, and then continues to rise, and the shaft rod 4 is completely raised. The arc-shaped lifting groove 207 makes the shaft rod 4 fit it more closely.

[0037] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the positioning assembly 3 includes a reinforcement frame 302, a fixing plate 306 is fixedly connected to the bottom of the reinforcement frame 302, an auxiliary plate 307 is fixedly connected between the inner walls of the reinforcement frame 302, an auxiliary groove 316 is opened at the top of the reinforcement frame 302, and an electric push rod 308 is set on the inner bottom surface of the auxiliary groove 316. The electric push rod 308 can be installed through the auxiliary groove 316. In addition, the auxiliary plate 307 can improve the strength of the interior of the reinforcement frame 302.

[0038] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the top of the reinforcement frame 302 is fixedly connected to the shell 301, and the tops of both sides of the shell 301 are provided with limited areas 305, the top of the electric push rod 308 is fixedly connected to the active splint 304, and both sides of the active splint 304 are fixedly connected to side thrust wings 310, and the outer surface of each side thrust wing 310 is fixedly connected to a magnetic plate 311. By starting the electric push rod 308, it drives the active splint 304 to be pushed upward, and the limited area 305 can provide a rotation space for the driven splint 303, and the up and down movement of the side thrust wing 310 can drive the driven splint 303 to rotate.

[0039] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, two positioning plates 309 are fixedly connected between the relative inner walls of the shell 301 near the bottom, and two anti-deflection plates 312 are fixedly connected between the relative inner walls of the shell 301 near the top. The active splint 304 is simultaneously arranged between the opposite sides of the two anti-deflection plates 312 and the opposite sides of the two positioning plates 309. A first positioning rod 317 is fixedly embedded in the top of the active splint 304. The outer surface of the first positioning rod 317 is rotatably connected to the first rotating cylinder 318. The outer surface of the first rotating cylinder 318 is fixedly connected to the first rubber sleeve 314. When the active splint 304 is pushed up, the positioning plate 309 and the anti-deflection plate 312 both limit the active splint 304, so that the active splint 304 can be kept on the same vertical path when pushed up.

[0040] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the housing 301 is fixedly connected with fixing rods 313 at the two sides thereof, the outer surface of each fixing rod 313 is rotatably connected with a driven clamping plate 303, the top of each driven clamping plate 303 is fixedly embedded with a second positioning rod 320, the outer surface of each second positioning rod 320 is rotatably connected with a second rotating cylinder 319, the outer surface of each second rotating cylinder 319 is fixedly connected with a second rubber sleeve 315, the bottom of each driven clamping plate 303 is fixedly embedded with a third positioning rod 321, the outer surface of each third positioning rod 321 is rotatably connected with a third rotating cylinder 322, and the outer surface of each third rotating cylinder 322 is fixedly connected with Magnetic sleeves 323, the outer surface of each magnetic sleeve 323 is magnetically connected to the outer surface of each magnetic plate 311, when the active splint 304 is pushed up, the first rotating cylinder 318 on its top is pushed up, and the inclined surfaces of the two side thrust wings 310 will push the two third rotating cylinders 322 upward. At this time, the two magnetic sleeves 323 and the magnetic plates 311 are magnetically connected, so that the magnetic sleeves 323 and the magnetic plates 311 can remain connected. Using the principle of lever, the driven splint 303 rotates with the fixed rod 313 as the rotation center, then the two second rotating cylinders 319 and the first rotating cylinder 318 move toward the shaft rod 4 at the same time, so that the shaft rod 4 can be clamped.

[0041] like Figure 1 and Figure 2 As shown, the inner wall of the lifting groove 207 is placed with the shaft rod 4, and the outer surfaces of the two second rubber sleeves 315 and the outer surface of the first rubber sleeve 314 are in contact with the outer surface of the shaft rod 4 at the same time. The soft and non-slip material of the first rubber sleeve 314 and the two second rubber sleeves 315 can not only protect the surface of the shaft rod 4 to prevent scratches on its surface, but also improve the stability of clamping.

[0042] The method of use and working principle of this device: When in use, the hydraulic cylinder 102, laser rangefinder 105, forward and reverse motor 202, hydraulic rod 205 and electric push rod 308 are all connected to an external power supply and an external control system, and are powered by an external power supply, while the start, stop and operation are controlled by an external control system. The shaft 4 is the main body of the worm shaft. The shaft 4 is placed between the first rotating cylinder 318 and the second rotating cylinder 319 inside the two positioning components 3, and the middle part is located above the lifting frame 206. After being placed stably, a laser beam is emitted through the two laser rangefinders 105, and the laser beam passes through the holes on the surface of the supporting base plate 101 and is projected onto the surface of the shaft 4 to be processed. When the position of the shaft rod 4 is parallel to the supporting base plate 101, it indicates that the position of the shaft rod 4 is stable and there will be no deflection when processing the end face of the shaft rod 4. Then, by monitoring the measurement results of the two laser rangefinders 105, when the heights measured by the two laser rangefinders 105 are different, an abnormal signal is transmitted to the external control system, and the external control system controls the start of the two hydraulic cylinders 102. The two hydraulic cylinders 102 are raised and lowered respectively, and the two connecting blocks 103 are driven to adjust up and down respectively. During the adjustment, the limit rod 113 is inside the movable notch 104. The movable notch 104 can limit the position of the limit rod 113. On the one hand, it can maintain the balance of the balance plate 109 when it is stationary, and has a supporting effect on the two positioning components 3. On the other hand, when the height of both sides of the balance plate 109 follows the adjustment of the connection block 103, the movement of the limit rod 113 is not affected. At this time, the rotating shaft 110 rotates inside the rotating hole 107 and is blocked by the stopper 111, so that it cannot fall off from the inside of the rotating hole 107, which has a protective effect. Then, the balance plate 109 uses the lever principle when adjusting the balance. Under the monitoring of the laser rangefinder 105, the shaft rod 4 can be kept balanced to avoid its tilting during positioning, resulting in uneven end surface processing, which solves the problem of being unable to automatically adjust the balance. Among them, the two anti-slip blocks 114 are both anti-slip materials made of hard rubber, which can effectively prevent the positioning device from shifting in position during use. After one end of the shaft rod 4 is processed, the hydraulic Rod 205 causes hydraulic rod 205 to rise, thereby driving lifting frame 206 to rise, so that the middle part of shaft rod 4 is located inside lifting groove 207, and then continues to rise. After shaft rod 4 is completely raised, by starting forward and reverse motor 202, the output shaft of forward and reverse motor 202 rotates, thereby driving I-beam table 204 to rotate inside connecting hole 203, and then can drive the lifted shaft rod 4 to rotate, so that the two ends of shaft rod 4 change direction, and then start hydraulic rod 205 again to make it descend, until the two ends of shaft rod 4 are put into two positioning components 3 again, and the outer surface of shaft rod 4 is separated from the inside of lifting groove 207, so as to achieve the purpose of automatically changing the direction of processing end face, and positioning component 3 can realize clamping and positioning of shaft rods 4 of different diameters,When the shaft rod 4 is clamped, the shaft rod 4 is first placed between a first rotating drum 318 and two second rotating drums 319, and the electric push rod 308 is started to drive the active splint 304 to be pushed upward. During the pushing process, the positioning plate 309 and the anti-deflection plate 312 both limit the active splint 304, so that the active splint 304 can be kept on the same vertical path when pushed upward. When the active splint 304 is pushed upward, the first rotating drum 318 at its top is pushed upward, and the inclined surfaces of the two side thrust wings 310 will push the two third rotating drums 322 upward. At this time, the two magnetic suction sleeves 323 are magnetically connected to the magnetic plate 311, which can keep the magnetic suction sleeves 323 and the magnetic plate 311 relative to each other. When the driven clamping plate 303 is connected, the lever principle is used to rotate the fixed rod 313 as the rotation center. Then, the two second rotating cylinders 319 and the first rotating cylinder 318 move toward the shaft rod 4 at the same time, so that the shaft rod 4 can be clamped. At this time, the first rubber sleeve 314 and the two second rubber sleeves 315 are in direct contact with the surface of the shaft rod 4. The soft and non-slip material can not only protect the surface of the shaft rod 4 and prevent scratches on the surface, but also improve the stability of clamping. By pulling the electric push rod 308 downward in a one-way manner, the shaft rod 4 can be unfolded. The limit area 305 can provide a rotation space for the driven clamping plate 303. In addition, the auxiliary plate 307 can improve the strength of the interior of the reinforcement frame 302.

[0043] Among them, the laser rangefinder 105 is an existing publicly available technology, and its composition structure and working principle are all well known, so its specific internal composition and working principle will not be described in detail. In practice, the laser rangefinder 105 is generally composed of the following main parts: first, a laser transmitter for emitting a laser beam of a specific wavelength; second, an optical system, including lenses, reflectors, etc., for focusing and guiding the laser beam; third, a receiving device for receiving the reflected laser signal; fourth, a signal processing unit for analyzing and processing the received signal; fifth, a display unit for displaying the measurement result. Its working principle is to emit a laser beam through a laser transmitter, and the laser is reflected back after being irradiated on the target object. The receiving device receives the reflected laser signal, and the signal processing unit calculates the distance between the instrument and the target object according to the time difference between laser emission and reception and the propagation speed of the laser in the air. Finally, the measurement result is displayed on the display unit, so that the balance of the balance board 109 can be monitored.

[0044] The wiring diagram of the hydraulic cylinder 102, the laser rangefinder 105, the forward and reverse motor 202, the hydraulic rod 205 and the electric push rod 308 in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the hydraulic cylinder 102, the laser rangefinder 105, the forward and reverse motor 202, the hydraulic rod 205 and the electric push rod 308 are no longer explained in detail.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning tool for machining the end face of a worm gear shaft, characterized in that: include: A balancing assembly (1), the balancing assembly (1) comprising a supporting base plate (101), laser rangefinders (105) being arranged at the top of the supporting base plate (101) near both sides, hydraulic cylinders (102) being arranged at the top of the supporting base plate (101) near both sides, the tops of the two hydraulic cylinders (102) being fixedly connected to connecting blocks (103), the outer surfaces of the two connecting blocks (103) being provided with movable notches (104), the top of the supporting base plate (101) being fixedly connected to two supporting side plates (106), the outer surfaces of the two supporting side plates (106) being provided with rotation holes (104). 07), the inner walls of the two rotating holes (107) are rotatably connected to a rotating shaft (110), a balancing plate (109) is fixedly connected between the two rotating shafts (110), a mounting area (112) is provided on the top of the balancing plate (109) near both sides, a limiting rod (113) is fixedly connected between the inner walls of the two mounting areas (112), and each limiting rod (113) is respectively arranged inside each movable notch (104); a positioning assembly (3), two positioning assemblies (3) are arranged, and the two positioning assemblies (3) are respectively fixedly connected to the tops of the two connecting blocks (103); A stopper (111) is fixedly connected to one end of each rotating shaft (110) that is away from the other end, anti-sliding blocks (114) are fixedly connected to the bottom of the supporting base plate (101) near both sides, and an active area (108) is provided in the middle of the top of the balancing plate (109); A transposition assembly (2) is fixedly connected to the top of the support base plate (101) between the two support side plates (106), the transposition assembly (2) comprising a fixing frame (201) and a forward and reverse motor (202), and the forward and reverse motor (202) is arranged on the support base plate (101); The fixing frame (201) is located between the inner walls of the activity area (108); a connection hole (203) is provided at the top of the fixing frame (201); an I-beam (204) is rotatably connected to the inner wall of the connection hole (203); and the output shaft of the forward and reverse motor (202) is fixedly connected to the bottom of the I-beam (204); A hydraulic rod (205) is arranged on the top of the I-beam (204); a lifting frame (206) is fixedly connected to the top of the hydraulic rod (205); a lifting groove (207) is provided on the top of the lifting frame (206); and a cross section of the lifting groove (207) is arranged in an arc shape; The positioning assembly (3) comprises a reinforcement frame (302), a fixing plate (306) is fixedly connected to the bottom of the reinforcement frame (302), an auxiliary plate (307) is fixedly connected between the inner walls of the reinforcement frame (302), an auxiliary groove (316) is formed on the top of the reinforcement frame (302), and an electric push rod (308) is arranged on the inner bottom surface of the auxiliary groove (316); The top of the reinforcement frame (302) is fixedly connected to a housing (301), the tops of both sides of the housing (301) are provided with limited areas (305), the top of the electric push rod (308) is fixedly connected to an active clamping plate (304), both sides of the active clamping plate (304) are fixedly connected to side thrust wings (310), and the outer surface of each side thrust wing (310) is fixedly connected to a magnetic plate (311); Two positioning plates (309) are fixedly connected between the relative inner walls of the shell (301) near the bottom, two anti-deflection plates (312) are fixedly connected between the relative inner walls of the shell (301) near the top, the active clamping plate (304) is simultaneously arranged between the opposite sides of the two anti-deflection plates (312) and the opposite sides of the two positioning plates (309), a first positioning rod (317) is fixedly embedded in the top of the active clamping plate (304), the outer surface of the first positioning rod (317) is rotatably connected to the first rotating cylinder (318), and the outer surface of the first rotating cylinder (318) is fixedly connected to the first rubber sleeve (314); The housing (301) is fixedly connected with fixing rods (313) at opposite sides thereof; the outer surface of each fixing rod (313) is rotatably connected with a driven clamping plate (303); the top of each driven clamping plate (303) is fixedly embedded with a second positioning rod (320); the outer surface of each second positioning rod (320) is rotatably connected with a second rotating cylinder (319); the outer surface of each second rotating cylinder (319) is fixedly connected with a second rubber sleeve (315); the bottom of each driven clamping plate (303) is fixedly embedded with a third positioning rod (321); the outer surface of each third positioning rod (321) is rotatably connected with a third rotating cylinder (322); the outer surface of each third rotating cylinder (322) is fixedly connected with a magnetic suction sleeve (323); the outer surface of each magnetic suction sleeve (323) is magnetically connected to the outer surface of each magnetic plate (311), respectively.

2. The positioning tool for machining the end face of a worm gear shaft according to claim 1, characterized in that: A shaft rod (4) is placed on the inner wall of the lifting groove (207), and the outer surfaces of the two second rubber sleeves (315) and the outer surface of the first rubber sleeve (314) are in contact with the outer surface of the shaft rod (4) at the same time.

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