Fixing device for finish machining of engine camshaft gear

Abstract

The invention discloses a fixing device for engine camshaft gear finish machining, and relates to the technical field of camshaft gear finish machining, the fixing device comprises an efficient replacement mechanism, the efficient replacement mechanism comprises a chuck body, the inner wall of the chuck body is rotatably connected with a bevel gear wheel, and the inner wall of the chuck body is rotatably connected with a wrench insertion cylinder; a small bevel gear is fixedly connected to the bottom end of the wrench insertion cylinder, the outer surface of the small bevel gear is meshed with the interior of a large bevel gear, a spiral groove is formed in the front face of the large bevel gear, three sliding grooves are formed in the front face of the chuck body, and a toothed plate is slidably connected to the interior of each sliding groove; according to the fixing device for finish machining of the engine camshaft gear, by arranging the stretching unit, the contact panel can be conveniently jacked, the camshaft gear can be conveniently clamped through the contact panel, it is guaranteed that the camshaft gear cannot be loosened in the clamping process, and finish machining can be conveniently conducted on the camshaft gear.

Description

Technical Field

[0001] The invention relates to the technical field of camshaft gear finishing, in particular to a fixing device used for finishing of engine camshaft gears. Background Art

[0002] Camshaft gear finishing refers to further meticulous processing of the camshaft gear through a series of precise processing methods and processes after its initial forming, in order to achieve very high dimensional accuracy, shape accuracy, surface quality and meshing performance requirements. Specifically, it is to use specific processing technology and equipment, such as high-precision grinders and milling machines, to accurately trim and optimize key parameters such as gear tooth shape, tooth pitch and tooth surface roughness, so that it can achieve precise transmission, smooth operation and good durability at work, thereby meeting the strict standards of various complex mechanical systems for camshaft gears in terms of performance and quality. Camshaft gears are usually used in engines, and fixtures are usually required for the finishing of camshaft gears to ensure that the camshaft gears can be stably in the correct processing position through the fixtures.

[0003] The fixing device generally clamps and fixes the camshaft gear through a three-jaw chuck. The three-jaw chuck can firmly clamp the camshaft gear so that it remains relatively still during the processing operation, which helps to achieve precise processing and ensure the accuracy and consistency of key parameters such as tooth shape and size. However, the existing three-jaw chuck will constantly rub against the surface of the workpiece when clamping the workpiece during use, which causes the contact surface between the three-jaw chuck and the workpiece to be easily worn. If the three-jaw chuck is worn, it will not only affect the clamping effect of the camshaft gear and reduce the processing accuracy, but also easily cause the problem of unstable clamping and increase safety hazards. The existing maintenance method is that when the three-jaw chuck is worn, the staff needs to disassemble the three-jaw chuck and replace or repair the contact surface of the three-jaw chuck. The disassembly and maintenance method is not only time-consuming and labor-intensive, but also reduces the processing efficiency of the camshaft gear. To this end, we propose a fixing device for fine machining of engine camshaft gears.

[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing camshaft gear finishing fixtures on the market, and even if they can be solved, they need to be solved with the cooperation of external tools, which cannot achieve the desired effect. Therefore, we propose a fixture for engine camshaft gear finishing. Summary of the invention

[0005] The object of the present invention is to provide a fixing device for finishing of engine camshaft gears to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixing device for finishing engine camshaft gears, comprising an efficient replacement mechanism, the efficient replacement mechanism comprising a chuck body, the inner wall of the chuck body is rotatably connected to a large bevel gear, the inner wall of the chuck body is rotatably connected to a wrench insert, the bottom end of the wrench insert is fixedly connected to a small bevel gear, the outer surface of the small bevel gear is meshed with the inside of the large bevel gear, the front side of the large bevel gear is provided with a spiral groove, the front side of the chuck body is provided with three sliding grooves, the inside of each sliding groove is slidably connected to a tooth plate, the outer surface of each tooth plate is spirally connected to the inside of the spiral groove, the front side of each tooth plate is fixedly connected to a claw, and the inside of the three claws is provided with an adjustment mechanism; The adjusting mechanism comprises a stretching unit, the stretching unit is located inside the clamping claw, and the stretching unit is used to tighten the clamping surface; The adjustment mechanism further comprises a steering replacement unit, the steering replacement unit is located outside the stretching unit, the steering replacement unit is used in conjunction with the stretching unit, and the steering replacement unit is used to replace the clamping surface; A disassembly and replacement mechanism is arranged on the outer side of the steering replacement unit. The disassembly and replacement mechanism is used in conjunction with the adjustment mechanism and is used to replace the clamping surface.

[0007] Preferably, the stretching unit includes three first bearings, the outer surface of each of the first bearings is fixedly connected to the inner wall of the claw, an inner cavity is opened inside each of the claws, a closing plate is arranged inside each of the claws, a first sliding groove is opened on the inner wall of each of the closing plates, a second sliding groove is opened on the inner wall of each of the inner cavity, a first slide plate and a second slide plate are respectively clamped inside each of the first sliding grooves and inside the second sliding grooves, a connecting shaft is commonly clamped inside each of the first slide plates, four connecting plates are fixedly connected to the outer surface of each of the connecting shafts, a contact panel is fixedly connected to the end of each of the connecting plates away from the connecting shaft, a clamping opening is opened on the outer surface of each of the claws, and each The interior of each of the clamping ports is communicated with the interior of the inner cavity, the outer surface of each of the contact panels is in contact with the inner wall of the clamping port, the outer surface of each of the first slide plate and the outer surface of the second slide plate are jointly fixedly connected to a traction frame, the inner wall of each of the traction frames is respectively threadedly connected to the inner wall of the first slide plate and the inner wall of the second slide plate with two positioning bolts, the outer surface of each of the traction frames is fixedly connected to a reinforcement ring, the inner ring of each of the first bearings is fixedly connected to a transmission shaft, one end of each of the transmission shafts is fixedly connected to a rotating wheel, the other end of each of the transmission shafts is fixedly connected to a threaded shaft, the outer surface of each of the threaded shafts is threadedly connected to a spiral cylinder, and the outer surface of each of the spiral cylinders is fixedly connected to the inner wall of the reinforcement ring.

[0008] Preferably, an anti-slip cover is provided on the outer side of each rotating wheel, and the inner wall of each anti-slip cover is fixedly connected to the outer surface of the rotating wheel.

[0009] Preferably, the outer surface of each spiral cylinder is fixedly connected to a balance frame, and the outer surface of each balance frame is fixedly connected to the inner wall of the inner cavity.

[0010] Preferably, the steering replacement unit includes three transparent plates, the outer surface of each of the transparent plates is fixedly connected to the inner wall of the closing plate, a connecting hole is provided on the front of each of the transparent plates, a positioning port is provided on the front of each of the transparent plates and the front of the first slide plate, four positioning grooves and a hexagonal groove are provided on the outer surface of each of the connecting shafts, the interior of each of the positioning grooves is jointly clamped with a positioning rod with the interior of one of the positioning ports, a threaded groove is provided on the inner wall of each of the positioning rods, a second bearing is fixedly connected to the inner wall of each of the first slide plate and the inner wall of the second slide plate, and the inner ring of each of the second bearings is fixedly connected to the outer surface of the connecting shaft.

[0011] Preferably, the outer surface of each of the clamping claws is fixedly connected to a first clamping plate, and the interior of each of the first clamping plates is clamped with a hexagonal rotating rod.

[0012] Preferably, the outer surface of each of the first clamping plates is rotatably hinged with a second clamping plate, and the inner wall of each of the second clamping plates is threadedly connected to the inner wall of the first clamping plate by two fixing bolts.

[0013] Preferably, an auxiliary pull rod is clamped inside each of the hexagonal rotating rods, and one end of each of the auxiliary pull rods close to the first clamping plate is fixedly connected to a threaded head.

[0014] Preferably, each of the claws is provided with a first closed groove, a second closed groove and a disassembly groove on the front side, the interior of each disassembly groove is clamped with the outer surface of the closed plate, the interior of each of the first closed groove and the interior of the second closed groove are clamped with a short side plate and a long side plate, the inner wall of each short side plate is threadedly connected to the inner wall of the claw with two first self-tapping bolts, and the inner wall of each long side plate is threadedly connected to the inner wall of the claw with two second self-tapping bolts.

[0015] Preferably, the inner wall of each of the claws is provided with four balancing grooves, the interior of each of the balancing grooves is slidably connected with a balancing support plate, and the outer surface of each of the balancing support plates is fixedly connected to the outer surface of the traction frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can conveniently tighten the contact panel by setting a stretching unit, and conveniently clamp the camshaft gear through the contact panel, ensuring that the camshaft gear will not loosen during the clamping process. In addition, the position of the contact panel can be manually adjusted by the stretching unit, so that the contact panel can be stretched to different positions of the inner cavity for further adjustment. The three contact panels of the stretching unit can effectively ensure the stability of the camshaft gear clamping, which is convenient for fine processing; 2. The present invention can conveniently adjust the steering of the contact panel on the basis of the stretching unit by setting a steering replacement unit, so as to facilitate the replacement of different contact panels. By steering the contact panel, the replacement effect of the contact panel is effectively improved, and the wear of the contact panel causes the need to disassemble the three-jaw chuck, which is time-consuming and labor-intensive. The steering replacement unit can be used to replace the position of the contact panel in cooperation with the stretching unit without removing the three-jaw chuck, which saves time and labor and improves the processing efficiency of the camshaft gear. 3. The present invention provides a disassembly and replacement mechanism to effectively cooperate with the stretching unit and the steering replacement unit, thereby further increasing the use effect of the contact panel and facilitating the disassembly and replacement of the contact panel. The disassembly and replacement mechanism can facilitate the disassembly and replacement of the contact panel when the four contact panels are worn, thereby improving the disassembly and replacement effect of the contact panel. The contact panels can be completely replaced without having to disassemble the three-jaw chuck. The method of disassembling the three-jaw chuck is replaced by efficiently replacing the contact panel, thereby further increasing the processing efficiency of the camshaft gear while saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the chuck body of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the clamping claw of the present invention; Figure 4 is a schematic cross-sectional structural diagram of the second splint of the present invention; Figure 5 It is a structural schematic diagram of the connecting shaft of the present invention; Figure 6 is a schematic structural diagram of a touch panel of the present invention; Figure 7 is a schematic structural diagram of a first slide plate of the present invention; Figure 8 It is a structural schematic diagram of the traction frame of the present invention; Fig. 9 It is a structural schematic diagram of the transmission shaft of the present invention; Fig.10It is a structural schematic diagram of the thread groove of the present invention; Fig.11 It is a structural schematic diagram of the thread head of the present invention.

[0018] In the figure: 1. efficient replacement mechanism; 11. claw; 12. spanner insert; 13. tooth plate; 14. chuck body; 15. small bevel gear; 16. spiral groove; 17. large bevel gear; 18. sliding groove; 2. adjustment mechanism; 21. stretching unit; 2101. contact panel; 2102. rotating wheel; 2103. anti-slip sleeve; 2104. first bearing; 2105. balance frame; 2106. threaded shaft; 2107. second sliding groove; 2108. spiral cylinder; 2109. positioning bolt; 2110. inner cavity; 2111. clamping mouth; 2112. transmission shaft; 2113. connecting shaft; 2114. connecting plate; 2115. first slide plate; 2116. second slide plate; 2117. traction frame; 2118. reinforcement ring; 21 19. First slide groove; 2120. Closing plate; 22. Steering replacement unit; 2201. First clamping plate; 2202. Hexagonal rotating rod; 2203. Auxiliary pull rod; 2204. Fixing bolt; 2205. Second clamping plate; 2206. Transparent plate; 2207. Connecting hole; 2208. Positioning port; 2209. Positioning plug rod; 2210. Hexagonal groove; 2211. Second bearing; 2212. Positioning groove; 2213. Thread groove; 2214. Thread head; 3. Disassembly and replacement mechanism; 301. First closed groove; 302. Disassembly groove; 303. Second closed groove; 304. Short side plate; 305. Long side plate; 306. First self-tapping bolt; 307. Second self-tapping bolt; 308. Balance groove; 309. Balance support plate. DETAILED DESCRIPTION

[0019] 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 described embodiments 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.

[0020] Example 1: Please refer to Figure 1-11The present invention provides a technical solution: a fixing device for finishing engine camshaft gears, comprising an efficient replacement mechanism 1, the efficient replacement mechanism 1 comprising a chuck body 14, the inner wall of the chuck body 14 is rotatably connected with a large bevel gear 17, the large bevel gear 17 can conveniently provide driving force, the inner wall of the chuck body 14 is rotatably connected with a wrench insert 12, the bottom end of the wrench insert 12 is fixedly connected with a small bevel gear 15, the small bevel gear 15 can rotate the large bevel gear 17 through the power of the wrench insert 12, and the outer surface of the small bevel gear 15 Meshing with the inside of the large bevel gear 17, the front of the large bevel gear 17 is provided with a spiral groove 16, the front of the chuck body 14 is provided with three sliding grooves 18, each of the sliding grooves 18 is slidably connected with a tooth plate 13, the outer surface of each tooth plate 13 is spirally connected with the inside of the spiral groove 16, and the tooth plate 13 can be clamped and loosened under the action of the spiral groove 16 under the action of the rotation of the large bevel gear 17, and the front of each tooth plate 13 is fixedly connected with a claw 11, and the inside of the three claws 11 is provided with an adjustment mechanism 2; The adjusting mechanism 2 comprises a stretching unit 21 . The stretching unit 21 is located inside the clamping claw 11 . The stretching unit 21 is used to tighten the clamping surface.

[0021] As a further limitation of the adjustment mechanism 2 of the present invention, the stretching unit 21 includes three first bearings 2104, the outer surface of each first bearing 2104 is fixedly connected to the inner wall of the claw 11, an inner cavity 2110 is provided inside each claw 11, a closing plate 2120 is provided inside each claw 11, a first slide groove 2119 is provided on the inner wall of each closing plate 2120, a second slide groove 2107 is provided on the inner wall of each inner cavity 2110, a first slide plate 2115 and a second slide plate 2116 are respectively clamped inside each first slide groove 2119 and inside the second slide groove 2107, and each first slide plate 2110 is provided with a first slide plate 2119 and a second slide plate 2116. The interior of the first slide 2115 and the interior of the second slide 2116 are both connected to the connecting shaft 2113, the outer surface of each connecting shaft 2113 is fixedly connected to four connecting plates 2114, and the end of each connecting plate 2114 away from the connecting shaft 2113 is fixedly connected to the contact panel 2101, the outer surface of each claw 11 is provided with a clamping opening 2111, the interior of each clamping opening 2111 is connected to the interior of the inner cavity 2110, the outer surface of each contact panel 2101 is in contact with the inner wall of the clamping opening 2111, and the outer surface of each first slide 2115 and the outer surface of the second slide 2116 are both fixedly connected to each other. There are traction frames 2117, the inner wall of each traction frame 2117 is respectively threadedly connected with the inner wall of the first slide 2115 and the inner wall of the second slide 2116 by two positioning bolts 2109, the outer surface of each traction frame 2117 is fixedly connected with a reinforcement ring 2118, the inner ring of each first bearing 2104 is fixedly connected with a transmission shaft 2112, one end of each transmission shaft 2112 is fixedly connected with a rotating wheel 2102, the other end of each transmission shaft 2112 is fixedly connected with a threaded shaft 2106, the outer surface of each threaded shaft 2106 is threadedly connected with a spiral barrel 2108, and the outer surface of each spiral barrel 2108 The surfaces are fixedly connected to the inner wall of the reinforcement ring 2118. By setting the stretching unit 21, the contact panel 2101 can be conveniently tightened, and the camshaft gear can be conveniently clamped by the contact panel 2101 to ensure that the camshaft gear will not loosen during the clamping process. In addition, the position of the contact panel 2101 can be manually adjusted by the stretching unit 21, so that the contact panel 2101 can be stretched to different positions of the inner cavity 2110 for further adjustment. The three contact panels 2101 of the stretching unit 21 can effectively ensure the stability of the camshaft gear clamping, which is convenient for fine processing. An anti-skid cover 2103 is provided on the outside of each rotating wheel 2102, and the inner wall of each anti-skid cover 2103 is fixedly connected to the outer surface of the rotating wheel 2102. The anti-skid cover 2103 can increase the surface friction of the rotating wheel 2102, making it convenient for processing personnel to rotate the rotating wheel 2102; The outer surface of each spiral tube 2108 is fixedly connected to a balance frame 2105, and the outer surface of each balance frame 2105 is fixedly connected to the inner wall of the inner cavity 2110. The balance frame 2105 can ensure the balance of the spiral tube 2108 during movement to prevent poor movement stability.

[0022] The specific implementation of this embodiment is as follows: by tightening the contact panel 2101 to the inside of the clamping mouth 2111, the stability of the contact panel 2101 is ensured, and the clamping processing of the camshaft gear is convenient. When adjusting the clamping degree and the stretching distance of the contact panel 2101, the rotating wheel 2102 is directly rotated, and the rotating wheel 2102 drives the transmission shaft 2112 to rotate inside the first bearing 2104, and the transmission shaft 2112 drives the threaded shaft 2106 to rotate inside the spiral barrel 2108. The spiral barrel 2108 can slide inside the balance frame 2105 through the threaded tensile force of the threaded shaft 2106, and the spiral barrel 2108 can The traction frame 2117 is able to drive the stretching, and the traction frame 2117 further drives the first slide 2115 and the second slide 2116 to slide in the first slide groove 2119 and the second slide groove 2107 respectively, and then the first slide 2115 and the second slide 2116 drive the connecting shaft 2113 to stretch and slide, and finally the connecting shaft 2113 drives the connecting plate 2114 and the contact panel 2101 to stretch and adjust, and the contact panel 2101 can slide in the clamping mouth 2111, so as to effectively adjust the position of the contact panel 2101, so as to facilitate better stabilization and further use of the contact panel 2101.

[0023] Example 2: Please refer to Figure 1-11 The present invention provides a technical solution: a fixing device for finishing engine camshaft gears. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0024] As a further limitation of the adjustment mechanism 2 of the present invention, the adjustment mechanism 2 further includes a steering replacement unit 22, the steering replacement unit 22 is located outside the stretching unit 21, the steering replacement unit 22 is used in conjunction with the stretching unit 21, and the steering replacement unit 22 is used to replace the clamping surface; The steering replacement unit 22 includes three transparent plates 2206, the outer surface of each transparent plate 2206 is fixedly connected to the inner wall of the closing plate 2120, a connecting hole 2207 is provided on the front of each transparent plate 2206, a positioning port 2208 is provided on the front of each transparent plate 2206 and the front of the first slide plate 2115, and four positioning grooves 2212 and a hexagonal groove 2210 are provided on the outer surface of each connecting shaft 2113, the interior of each positioning groove 2212 is connected to the interior of one of the positioning ports 2208 by a positioning rod 2209, the inner wall of each positioning rod 2209 is provided with a threaded groove 2213, and the inner wall of each first slide plate 2115 and the inner wall of the second slide plate 2116 are fixedly connected to the first slide plate 2115 and the second slide plate 2116. Second bearing 2211, the inner ring of each second bearing 2211 is fixedly connected to the outer surface of the connecting shaft 2113. By setting the steering replacement unit 22, it is convenient to further adjust the steering of the contact panel 2101 on the basis of the stretching unit 21, so as to facilitate the replacement of different contact panels 2101. By steering the contact panel 2101, the replacement effect of the contact panel 2101 is effectively improved, and the wear of the contact panel 2101 causes the need to disassemble the three-jaw chuck, which is relatively time-consuming and labor-intensive. By using the steering replacement unit 22, the position of the contact panel 2101 can be replaced in cooperation with the stretching unit 21 without removing the three-jaw chuck, which saves time and effort and improves the processing efficiency of the camshaft gear; The outer surface of each claw 11 is fixedly connected with a first clamping plate 2201, and the interior of each first clamping plate 2201 is clamped with a hexagonal rotating rod 2202. Through the first clamping plate 2201 and the hexagonal rotating rod 2202, the connecting shaft 2113 can be conveniently rotated in conjunction with the hexagonal groove 2210, so as to facilitate the adjustment of the rotation angle; The outer surface of each first clamping plate 2201 is rotatably hinged with a second clamping plate 2205, and the inner wall of each second clamping plate 2205 is threadedly connected with the inner wall of the first clamping plate 2201 by two fixing bolts 2204. The second clamping plate 2205 and the fixing bolts 2204 can cooperate with the first clamping plate 2201 to clamp the hexagonal rotating rod 2202, thereby ensuring the clamping stability and facilitating its positioning. An auxiliary pull rod 2203 is clamped inside each hexagonal rotating rod 2202, and a threaded head 2214 is fixedly connected to one end of each auxiliary pull rod 2203 close to the first clamping plate 2201. The positioning rod 2209 can be easily taken out and disassembled through the auxiliary pull rod 2203 and the threaded head 2214.

[0025] The specific implementation of this embodiment is as follows: when the first slide plate 2115 is pulled to a position where the transparent plate 2206 is flush with it by the stretching unit 21, the positioning rod 2209 inside the first slide plate 2115 can be observed through the transparent plate 2206, and when the positioning rod 2209 is located inside the positioning port 2208, the rotation of the rotating wheel 2102 is stopped, and at this time, the auxiliary pull rod 2203 is directly used to pass through the positioning port 2208 to screw the thread head 2214 into the thread groove 2213 until Then, the auxiliary pull rod 2203 is stretched outward, and the positioning rod 2209 is taken out by the force of the auxiliary pull rod 2203 being stretched outward. At this time, the hexagonal rotating rod 2202 is passed through the connecting hole 2207, so that the plug of the hexagonal rotating rod 2202 is clamped into the inside of the hexagonal groove 2210, and the hexagonal rotating rod 2202 is rotated in the hexagonal groove 2210, so that the hexagonal rotating rod 2202 can directly drive the connecting shaft 2113 to rotate, and the connecting shaft 2113 can be rotated through the second bearing 2211. The first slide 2115 and the second slide 2116 rotate internally. During the rotation process, the rotation position of the connecting shaft 2113 can be observed through the transparent plate 2206. Four positioning grooves 2212 are arranged on the surface of the connecting shaft 2113. When the connecting shaft 2113 is flipped over ninety degrees, the positioning grooves 2212 coincide with the positioning opening 2208. Four connecting plates 2114 are arranged on the connecting shaft 2113 according to the positioning grooves 2212. Each connecting plate 2114 is provided with a contact panel 2101. After adjusting to ninety degrees, the next different contact panel 2101 can be replaced, and then the auxiliary pull rod 2203 is used to clamp the positioning rod 2209 to the positioning grooves 2212 and the positioning opening 2208 to limit the connecting shaft 2113. When the contact panel 2101 is replaced, the stretching unit 21 is used to push the contact panel 2101 back to the clamping opening 2111, so as to effectively and quickly replace the worn contact panel 2101.

[0026] Example 3: Please refer to Figure 1-11 The present invention provides a technical solution: a fixing device for finishing engine camshaft gears. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0027] As a further limitation of the adjustment mechanism 2 of the present invention, a disassembly and replacement mechanism 3 is provided on the outer side of the steering replacement unit 22, and the disassembly and replacement mechanism 3 is used in conjunction with the adjustment mechanism 2, and the disassembly and replacement mechanism 3 is used to replace the clamping surface; A first closed groove 301, a second closed groove 303 and a disassembly groove 302 are provided on the front of each claw 11. The interior of each disassembly groove 302 is clamped with the outer surface of the closed plate 2120. The interior of each first closed groove 301 and the interior of the second closed groove 303 are clamped with a short side plate 304 and a long side plate 305. The inner wall of each short side plate 304 is threadedly connected to the inner wall of the claw 11 with two first self-tapping bolts 306. The inner wall of each long side plate 305 is threadedly connected to the inner wall of the claw 11 with two second self-tapping bolts 307. By setting the disassembly and replacement mechanism 3, the stretching unit 2 is effectively matched. 1 and the steering replacement unit 22, further increasing the use effect of the contact panel 2101, facilitating the disassembly and replacement of the contact panel 2101, and through the disassembly and replacement mechanism 3, the contact panel 2101 can be conveniently disassembled and replaced when the four contact panels 2101 are worn, further increasing the continuous use effect of the contact panel 2101, and further replacing all the contact panels 2101 on the basis of avoiding the disassembly of the three-jaw chuck, and replacing the traditional method of disassembling the three-jaw chuck by efficiently replacing the contact panel 2101, on the basis of saving time and labor, further increasing the processing efficiency of the camshaft gear; The inner wall of each claw 11 is provided with four balancing grooves 308, and the interior of each balancing groove 308 is slidably connected with a balancing support plate 309, and the outer surface of each balancing support plate 309 is fixedly connected to the outer surface of the traction frame 2117. Through the balancing support plate 309 and the balancing groove 308, the balance stability of the traction frame 2117 can be conveniently increased to prevent tensile instability and deviation.

[0028] The specific implementation of this embodiment is as follows: if all four contact panels 2101 are worn out, they can be directly replaced as a whole by disassembling and replacing the mechanism 3, so as to facilitate further use of the contact panel 2101. First, the first slide plate 2115 and the second slide plate 2116 are stretched to the rear side of the closing plate 2120 by using the stretching unit 21, and the first self-tapping bolt 306 and the second self-tapping bolt 307 are directly taken out, and the closing plate 2120 is directly taken out. The closing plate 2120 can directly drive the short side plate 304 and the long side plate 305 to fall off. Since the first slide plate 2115 is in a snap-fitting relationship with the first slide groove 2119, the closing plate 2120 can be directly removed. At this time, the connecting shaft 2113 and the contact panel 21 01 are both located in the middle of the disassembly groove 302, and the positioning bolts 2109 are further removed to separate the traction frame 2117 from the first slide plate 2115 and the second slide plate 2116 respectively, and then the stretching unit 21 is used to further stretch the traction frame 2117 to ensure that the traction frame 2117 is not affected during the removal of the contact panel 2101. At this time, the connecting shaft 2113 and the contact panel 2101 can be directly taken out, which is convenient for maintenance or direct replacement. When installation is required, the second slide plate 2116 is directly snapped into the second slide groove 2107, and the above disassembly steps are repeated to install it, which effectively increases the disassembly effect and use effect of the contact panel 2101 and increases the continuous use time.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for finishing an engine camshaft gear, comprising an efficient replacement mechanism (1), characterized in that: The efficient replacement mechanism (1) comprises a chuck body (14), the inner wall of the chuck body (14) is rotatably connected to a large bevel gear (17), the inner wall of the chuck body (14) is rotatably connected to a wrench insert tube (12), the bottom end of the wrench insert tube (12) is fixedly connected to a small bevel gear (15), the outer surface of the small bevel gear (15) is meshed with the inside of the large bevel gear (17), the front face of the large bevel gear (17) is provided with a spiral groove (16), the front face of the chuck body (14) is provided with three sliding grooves (18), the interior of each sliding groove (18) is slidably connected to a tooth plate (13), the outer surface of each tooth plate (13) is spirally connected to the interior of the spiral groove (16), the front face of each tooth plate (13) is fixedly connected to a claw (11), and the interior of the three claws (11) is provided with an adjustment mechanism (2); The adjustment mechanism (2) comprises a stretching unit (21), the stretching unit (21) is located inside the clamping claw (11), and the stretching unit (21) is used to tighten the clamping surface; The adjustment mechanism (2) further comprises a steering replacement unit (22), wherein the steering replacement unit (22) is located outside the stretching unit (21), the steering replacement unit (22) is used in conjunction with the stretching unit (21), and the steering replacement unit (22) is used to replace the clamping surface; A disassembly and replacement mechanism (3) is provided on the outer side of the steering replacement unit (22); the disassembly and replacement mechanism (3) is used in conjunction with the adjustment mechanism (2); and the disassembly and replacement mechanism (3) is used to replace the clamping surface.

2. A fixing device for finishing engine camshaft gears according to claim 1, characterized in that: The stretching unit (21) comprises three first bearings (2104), the outer surface of each of the first bearings (2104) is fixedly connected to the inner wall of the clamping claw (11), the interior of each of the clamping claws (11) is provided with an inner cavity (2110), the interior of each of the clamping claws (11) is provided with a closing plate (2120), the inner wall of each of the closing plates (2120) is provided with a first sliding groove (2119), the inner wall of each of the inner cavities (2110) is provided with a second sliding groove (2107), and the interior of each of the first sliding grooves (2119) and the second sliding grooves (2107) are connected to each other. The interiors of the two slide grooves (2107) are respectively clamped with a first slide plate (2115) and a second slide plate (2116); the interior of each of the first slide plate (2115) and the interior of the second slide plate (2116) are both clamped with a connecting shaft (2113); the outer surface of each of the connecting shafts (2113) is fixedly connected to four connecting plates (2114); one end of each of the connecting plates (2114) away from the connecting shaft (2113) is fixedly connected to a contact panel (2101); and the outer surface of each of the clamping claws (11) is provided with a clamping opening (2111). The interior of each clamping opening (2111) is connected to the interior of the inner cavity (2110), the outer surface of each contact panel (2101) is in contact with the inner wall of the clamping opening (2111), the outer surface of each first slide plate (2115) and the outer surface of the second slide plate (2116) are fixedly connected to a traction frame (2117), the inner wall of each traction frame (2117) is respectively threadedly connected to the inner wall of the first slide plate (2115) and the inner wall of the second slide plate (2116) by two positioning bolts (2109), and each traction frame (2117) is fixedly connected to the inner wall of the first slide plate (2115) and the inner wall of the second slide plate (2116) by two positioning bolts (2109). The outer surface of the frame (2117) is fixedly connected to a reinforcement ring (2118), the inner ring of each of the first bearings (2104) is fixedly connected to a transmission shaft (2112), one end of each of the transmission shafts (2112) is fixedly connected to a rotating wheel (2102), the other end of each of the transmission shafts (2112) is fixedly connected to a threaded shaft (2106), the outer surface of each of the threaded shafts (2106) is threadedly connected to a spiral barrel (2108), and the outer surface of each of the spiral barrels (2108) is fixedly connected to the inner wall of the reinforcement ring (2118).

3. A fixing device for finishing engine camshaft gears according to claim 2, characterized in that: An anti-slip cover (2103) is provided on the outer side of each rotating wheel (2102), and the inner wall of each anti-slip cover (2103) is fixedly connected to the outer surface of the rotating wheel (2102).

4. A fixing device for finishing engine camshaft gears according to claim 2, characterized in that: The outer surface of each spiral cylinder (2108) is fixedly connected to a balance frame (2105), and the outer surface of each balance frame (2105) is fixedly connected to the inner wall of the inner cavity (2110).

5. A fixing device for finishing engine camshaft gears according to claim 2, characterized in that: The steering replacement unit (22) comprises three transparent plates (2206), the outer surface of each transparent plate (2206) being fixedly connected to the inner wall of the closing plate (2120), the front surface of each transparent plate (2206) being provided with a connecting hole (2207), the front surface of each transparent plate (2206) and the front surface of the first sliding plate (2115) being provided with a positioning opening (2208), and the outer surface of each connecting shaft (2113) being provided with four positioning grooves (2212) and a hexagonal groove (2210), the interior of each of the positioning grooves (2212) is jointly clamped with a positioning rod (2209) in the interior of one of the positioning ports (2208), the inner wall of each of the positioning rods (2209) is provided with a threaded groove (2213), the inner wall of each of the first slide plate (2115) and the inner wall of the second slide plate (2116) are fixedly connected with a second bearing (2211), and the inner ring of each of the second bearings (2211) is fixedly connected to the outer surface of the connecting shaft (2113).

6. A fixing device for finishing engine camshaft gears according to claim 1, characterized in that: The outer surface of each of the clamping claws (11) is fixedly connected to a first clamping plate (2201), and the interior of each of the first clamping plates (2201) is clamped with a hexagonal rotating rod (2202).

7. A fixing device for finishing engine camshaft gears according to claim 6, characterized in that: The outer surface of each of the first clamping plates (2201) is rotatably hinged with a second clamping plate (2205), and the inner wall of each of the second clamping plates (2205) is threadedly connected to the inner wall of the first clamping plate (2201) by two fixing bolts (2204).

8. A fixing device for finishing engine camshaft gears according to claim 6, characterized in that: An auxiliary pull rod (2203) is clamped inside each of the hexagonal rotating rods (2202), and one end of each of the auxiliary pull rods (2203) close to the first clamping plate (2201) is fixedly connected to a threaded head (2214).

9. A fixing device for finishing engine camshaft gears according to claim 2, characterized in that: The front surface of each of the clamping claws (11) is provided with a first closed groove (301), a second closed groove (303) and a disassembly groove (302); the interior of each of the disassembly grooves (302) is clamped with the outer surface of the closed plate (2120); the interior of each of the first closed grooves (301) and the interior of the second closed grooves (303) are clamped with a short side plate (304) and a long side plate (305); the inner wall of each of the short side plates (304) is threadedly connected to the inner wall of the clamping claw (11) by two first self-tapping bolts (306); the inner wall of each of the long side plates (305) is threadedly connected to the inner wall of the clamping claw (11) by two second self-tapping bolts (307).

10. A fixing device for finishing engine camshaft gears according to claim 9, characterized in that: The inner wall of each of the claws (11) is provided with four balancing grooves (308), the interior of each of the balancing grooves (308) is slidably connected to a balancing support plate (309), and the outer surface of each of the balancing support plates (309) is fixedly connected to the outer surface of the traction frame (2117).

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