Camshaft end hole positioning and press-fitting device

Abstract

The invention discloses a camshaft end hole positioning and press-fitting device, and belongs to the technical field of camshaft machining. The camshaft end hole positioning and press-fitting device comprises a carrying plate mounted on a box body, and further comprises a shaft clamping mechanism and a press-fitting mechanism. The shaft clamping mechanism is used for clamping and fixing the cam shaft. The press-fitting mechanism comprises two hydraulic cylinders, a rack, a clamping assembly and a cleaning assembly. According to the press-fitting mechanism, the hydraulic cylinder, the lifting plate, the rack and the cleaning assembly are arranged, when the hydraulic cylinder drives the lifting plate to move downwards, a driven gear can be driven to rotate through the rack, then the rotating speed is increased through an acceleration gear set, fan blades rotate at a high speed, airflow blown out by the fan blades purges a shaft end hole of a cam shaft through an air guide barrel, an air guide pipe and an air nozzle, and the cam shaft is cleaned. Therefore, chippings, dust and other impurities in the shaft end hole are removed, the impurities are prevented from influencing the matching sealing performance of the sealing plug and the shaft end hole, meanwhile, the cleaning assembly can be driven without an additional power source, and the structural design is simplified.

Description

Technical Field

[0001] This invention belongs to the field of camshaft machining technology, and particularly relates to a camshaft end hole positioning and pressing device. Background Technology

[0002] As a core transmission component in power equipment such as internal combustion engines and range extenders, the sealing performance of the camshaft end bore directly affects the operational stability and service life of the equipment. The assembly accuracy of the end bore and the sealing plug is a key factor determining the sealing effect. With the development of power machinery towards higher power, miniaturization, and longer service life, stringent requirements have been placed on the accuracy, efficiency, and versatility of camshaft end bore positioning and press-fitting. Currently, various camshaft end bore assembly technologies have been developed in the industry. Mainstream equipment uses mechanical clamping mechanisms to fix the camshaft and hydraulic or pneumatic drives to press-fit the sealing plug.

[0003] However, the existing camshaft end hole positioning and pressing technology still has the following shortcomings: First, the lack of a module for cleaning the shaft end hole means that impurities in the shaft end hole can easily cause poor sealing and affect the quality of assembly. Secondly, traditional clamping components are mostly single-sided drive or multiple asynchronous drive structures, which can easily lead to eccentric clamping of the sealing plug, causing jamming, tilting, or even scratching of the inner wall of the shaft end hole during press fitting. Summary of the Invention

[0004] The purpose of this invention is to provide a camshaft end hole positioning and pressing device to solve the technical problem in the prior art that there is no module for cleaning the end hole, and that impurities in the end hole can easily cause poor sealing and affect the quality of assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A camshaft end hole positioning and pressing device includes a carrier plate mounted on a housing, the housing having multiple sliding grooves, and further includes: a shaft clamping mechanism for centering and clamping a camshaft placed vertically on the carrier plate; a pressing mechanism including: two hydraulic cylinders, both mounted on the housing, with lifting plates mounted on their extended ends; a rack mounted on the bottom surface of the lifting plate; a clamping assembly mounted on the bottom surface of the lifting plate for coaxially centering and clamping a sealing plug, and precisely positioning the sealing plug directly above the camshaft end hole; and a cleaning assembly mounted on the top surface of the housing for air-blowing cleaning of the camshaft end hole.

[0006] Preferably, the cleaning assembly includes: an air guide tube installed on the top surface of the housing; an air duct fixedly connected to the housing via a support base, one end of which is fixedly connected to the air guide tube; a movable tube, one end of which is rotatably connected to the air guide tube and internally connected, the other end of which is fitted with an air nozzle; a torsion spring connected to the air guide tube and the movable tube; an acceleration gear set installed on the top surface of the housing, having an input shaft and an output shaft; a driven gear fixedly connected to the input shaft of the acceleration gear set and meshing with the rack; a rotating shaft fixedly connected to the output shaft of the acceleration gear set; and fan blades installed on the rotating shaft and located inside the air guide tube.

[0007] Preferably, the pressing mechanism further includes a push plate, which is installed on the bottom surface of the lifting plate and located directly above the movable tube.

[0008] Preferably, the clamping assembly includes: a fixed cylinder, fixedly connected to the bottom surface of the lifting plate, having a through groove thereon; a turntable, rotatably connected to the fixed cylinder, having multiple arc-shaped grooves equidistantly formed thereon; a fixed plate, fixedly connected to the bottom surface of the fixed cylinder, having multiple guide grooves equidistantly formed thereon; multiple sliding seats, each slidably connected to the multiple guide grooves, each sliding seat having a drive rod mounted thereon, the drive rod passing through the arc-shaped grooves and slidably connected to the arc-shaped grooves; multiple clamping seats, each mounted on the bottom surface of the multiple sliding seats, for clamping the sealing plug; and a rotating disc component for driving the turntable to rotate.

[0009] Preferably, the rotating disk component includes: an arc-shaped toothed plate that passes through the through slot and is fixedly connected to the turntable; a second motor that is mounted on the bottom surface of the lifting plate; and a drive gear that is mounted on the power output shaft of the second motor and meshes with the arc-shaped toothed plate.

[0010] Preferably, the clamping mechanism includes: a first motor, mounted on the inner top surface of the housing; a vertical rod, rotatably connected to the housing, with its upper end fixedly connected to the power output shaft of the first motor; multiple first bevel gears, all fixedly sleeved on the vertical rod; and multiple sets of clamping assemblies, all used to clamp and fix the camshaft.

[0011] Preferably, the clamping shaft assembly includes: a lead screw, rotatably connected to the inner wall of the housing, with its two ends having opposite threads; a second bevel gear, rotatably connected to one end of the lead screw and meshing with the first bevel gear; two lead screw nuts, each sleeved on the lead screw; two movable plates, each penetrating the slide groove and slidably connected to the slide groove, and respectively fixedly connected to the two lead screw nuts; two mounting frames, respectively fixedly connected to the ends of the two movable plates away from the lead screw nuts; and two clamping plates, respectively slidably connected to the two mounting frames, the side of the clamping plate away from the mounting frame being an arc surface.

[0012] Preferably, the clamping shaft assembly further includes a plurality of springs installed between the clamping plate and the mounting frame.

[0013] Preferably, it also includes: multiple support legs installed on the bottom surface of the housing and the carrying plate; and a display controller installed on the housing.

[0014] Preferably, it further includes: a pallet, mounted on the box body, and both hydraulic cylinders are mounted on the top surface of the pallet.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The pressing mechanism in this invention is equipped with a hydraulic cylinder, a lifting plate, a rack, and a cleaning component. When the hydraulic cylinder drives the lifting plate to move downward, it drives the driven gear to rotate through the rack, and then the speed is amplified by the acceleration gear set, so that the fan blades rotate at high speed. The airflow blown out by the fan blades will blow through the air guide tube, air guide pipe and air nozzle to clean the shaft end hole of the camshaft, thereby removing debris, dust and other impurities in the shaft end hole, avoiding impurities from affecting the sealing performance of the sealing plug and the shaft end hole. At the same time, the cleaning component can be driven without an additional power source, simplifying the structural design.

[0016] 2. The clamping assembly in this invention comprises a fixed cylinder, a turntable, a fixed plate, multiple sliding seats, multiple clamping seats, and a rotating disk component. A second motor drives the drive gear to rotate, which in turn drives the turntable to rotate through the meshing arc-shaped toothed plate. The arc-shaped groove drives the drive rod to move, which in turn drives the sliding seats to move synchronously along the guide groove. This allows the multiple clamping seats to center and clamp the sealing plug, ensuring that the sealing plug is always directly above the end hole of the camshaft, thus avoiding eccentricity or tilting during press-fitting. At the same time, the synchronous movement of the multiple clamping seats can accommodate sealing plugs of different diameters.

[0017] 3. The clamping mechanism of the present invention is provided with a first motor, a vertical rod, a first bevel gear and multiple clamping components. The first motor drives the vertical rod to rotate, and then the first and second bevel gears drive the lead screw to rotate, which in turn drives the two lead screw nuts to move towards each other, so that the clamping plate can adaptively center and clamp the camshaft. The spring between the clamping plate and the mounting frame provides buffer support, so that the clamping mechanism can adapt to camshafts of different diameters and specifications. It can also avoid damage or deformation of the camshaft surface caused by local stress concentration during clamping, and at the same time ensure that the camshaft does not move axially or radially during the press-fitting process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The three-dimensional positioning and pressing device for the camshaft end hole in this invention. Figure 1 ; Figure 2 The three-dimensional positioning and pressing device for the camshaft end hole in this invention. Figure 2 ; Figure 3 This is a perspective view of the pressing mechanism in this invention; Figure 4 This is an exploded view of the clamping component in this invention; Figure 5 This is an exploded view of the cleaning component in this invention; Figure 6 This is a perspective view of the clamping shaft mechanism in this invention; Figure 7 This is a perspective view of the clamping shaft assembly in this invention; Figure 8 This is an exploded view of the clamping shaft assembly in this invention; Reference numerals: 100, housing; 101, carrying plate; 102, support leg; 103, display controller; 104, slide rail; 105, pallet; 110, clamping mechanism; 111, lead screw; 112, second bevel gear; 113, lead screw nut; 114, moving plate; 115, mounting frame; 116, clamping plate; 117, spring; 118, first motor; 119, vertical rod; 1191, first bevel gear; 200, pressing mechanism; 201, hydraulic cylinder; 202, lifting plate; 203, rack; 204, push plate; 210, clamping assembly. Components; 211, Fixed cylinder; 212, Through groove; 213, Turntable; 2131, Arc groove; 214, Arc toothed plate; 215, Fixed plate; 2151, Guide groove; 216, Sliding seat; 2161, Drive rod; 217, Clamping seat; 218, Second motor; 219, Drive gear; 220, Cleaning assembly; 221, Air duct; 222, Air pipe; 223, Support seat; 224, Movable pipe; 225, Air nozzle; 226, Torsion spring; 227, Acceleration gear set; 228, Driven gear; 229, Rotating shaft; 2291, Fan blade. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0023] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0024] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example 1: As Figures 1-5 As shown, the camshaft end hole positioning and pressing device includes a carrying plate 101 mounted on a housing 100. Multiple support legs 102 are mounted on the bottom surfaces of the housing 100 and the carrying plate 101. A display controller 103 and a support plate 105 are mounted on the outer surface of the housing 100. The display controller 103 controls the start and stop of the first motor 118, the second motor 218, and the hydraulic cylinder 201. Multiple sliding grooves 104 are provided on the housing 100.

[0027] The camshaft end hole positioning and pressing device also includes a shaft clamping mechanism 110 and a pressing mechanism 200. The shaft clamping mechanism 110 is used to clamp and fix the camshaft.

[0028] The pressing mechanism 200 includes two hydraulic cylinders 201, a rack 203, a clamping assembly 210, and a cleaning assembly 220. Both hydraulic cylinders 201 are mounted on the support plate 105 of the housing 100, and a lifting plate 202 is mounted on the extended end of the two hydraulic cylinders 201; the rack 203 is mounted on the bottom surface of the lifting plate 202.

[0029] The clamping assembly 210 is installed on the bottom surface of the lifting plate 202. The clamping assembly 210 is used to clamp the sealing plug and position the sealing plug directly above the camshaft end hole. The cleaning assembly 220 is installed on the top surface of the housing 100. The cleaning assembly 220 is used to clean the camshaft end hole.

[0030] Specifically, the camshaft is placed on the carrier plate 101 and then clamped using the clamping mechanism 110. The sealing plug to be installed is then placed in the clamping assembly 210 and clamped using the clamping assembly 210. At this time, the sealing plug is directly above the end hole of the camshaft. Then, by activating the two hydraulic cylinders 201, the extension ends of the two hydraulic cylinders 201 drive the lifting plate 202 to move downward.

[0031] When the lifting plate 202 moves downward, it will drive the rack 203 to move downward. The downward moving rack 203 will drive the cleaning component 220 to start running, so that the cleaning component 220 cleans the end hole of the camshaft by blowing air.

[0032] Furthermore, when the lifting plate 202 moves downward, it will also drive the clamping assembly 210 to move downward, thereby driving the sealing plug to move downward, and thus inserting the sealing plug into the shaft end hole of the camshaft.

[0033] like Figure 3 and Figure 5 As shown, the cleaning assembly 220 includes an air guide tube 221, an air duct 222, a movable tube 224, a torsion spring 226, an acceleration gear set 227, a driven gear 228, a rotating shaft 229, and a fan blade 2291.

[0034] The air duct 221 is installed on the top surface of the housing 100; the air duct 222 is fixedly connected to the housing 100 through the support base 223, one end of the air duct 222 is fixedly connected to the air duct 221, and the air duct 222 communicates with the interior of the air duct 221; the side of the air duct 221 near the acceleration gear set 227 is open.

[0035] One end of the movable tube 224 is rotatably connected to and internally communicates with the air guide tube 222. The other end of the movable tube 224 is equipped with an air nozzle 225, which faces the end hole of the camshaft held by the clamping mechanism 110. A torsion spring 226 is connected to both the air guide tube 222 and the movable tube 224. One end of the movable tube 224 is rotatably connected to the air guide tube 222 via a rotary joint, and the two are internally communicated. The rotary joint has a sealing ring to ensure no airflow leakage while allowing the movable tube 224 to rotate freely. The outlet diameter of the air nozzle 225 is 8-10 mm. Initially, the distance between the air nozzle 225 and the end hole is 10-15 mm, ensuring that the airflow can be accurately injected into the end hole.

[0036] The acceleration gear set 227 is installed on the top surface of the housing 100. The acceleration gear set 227 has an input shaft and an output shaft. The acceleration gear set 227 also has a housing, in which multiple connecting gears are installed. Through the meshing of the multiple connecting gears, the input shaft can rotate one revolution and the output shaft can rotate multiple revolutions. The acceleration gear set 227 is an existing mature mechanism, and the acceleration gear set 227 can adopt existing solutions.

[0037] Driven gear 228 is fixedly connected to the input shaft of acceleration gear set 227, and driven gear 228 meshes with rack 203; rotating shaft 229 is fixedly connected to the output shaft of acceleration gear set 227; fan blade 2291 is mounted on rotating shaft 229 and is located inside air guide tube 221.

[0038] Specifically, when the lifting plate 202 moves downward, it will drive the rack 203 to move downward. The downward-moving rack 203 will drive the driven gear 228 to rotate, which in turn will drive the rotating shaft 229 to rotate rapidly through the acceleration gear set 227, which in turn will drive the fan blade 2291 to rotate rapidly. The rotating fan blade 2291 will deliver air into the air guide duct 221, so that the air enters the air guide duct 222, and then blows the air out through the movable tube 224 and the air nozzle 225. The air blown out by the air nozzle 225 will blow towards the shaft end hole of the camshaft, thereby cleaning the shaft end hole of the camshaft through airflow.

[0039] Among them, the acceleration gear set 227 of the cleaning component 220 is designed to increase the rotation speed of the fan blade 2291, enhance the airflow intensity, improve cleaning efficiency and cleaning effect, and avoid poor sealing caused by impurities.

[0040] like Figure 3 As shown, the pressing mechanism 200 also includes a push plate 204, which is installed on the bottom surface of the lifting plate 202 and is located directly above the movable tube 224.

[0041] In the initial state, the torsion spring 226 is in a pre-tightened state, so that the air nozzle 225 is aligned with the end hole of the camshaft. When the lifting plate 202 moves down to the point where the push plate 204 contacts the movable tube 224, the pressure of the push plate 204 overcomes the pre-tightening force of the torsion spring 226 and pushes the movable tube 224 to rotate, thus completing the avoidance. When the lifting plate 202 moves up, the rebound force of the torsion spring 226 drives the movable tube 224 to reset, and the air nozzle 225 is re-aligned with the camshaft.

[0042] Specifically, by setting the push plate 204, when the lifting plate 202 moves downward, it will push the movable tube 224 to rotate, thereby preventing the movable tube 224 and the air nozzle 225 from affecting the insertion of the sealing plug and the camshaft. When the lifting plate 202 drives the push plate 204 to move upward, the rebound force of the torsion spring 226 will drive the movable tube 224 and the air nozzle 225 to reset.

[0043] like Figure 3 and Figure 4 As shown, the clamping assembly 210 includes a fixed cylinder 211, a turntable 213, a fixed plate 215, multiple sliding seats 216, multiple clamping seats 217, and a rotating disk component.

[0044] The fixed cylinder 211 is fixedly connected to the bottom surface of the lifting plate 202, and a through groove 212 is provided on the fixed cylinder 211; the turntable 213 is rotatably connected to the fixed cylinder 211, and multiple arc-shaped grooves 2131 are provided at equal intervals on the turntable 213; the fixed plate 215 is fixedly connected to the bottom surface of the fixed cylinder 211, and multiple guide grooves 2151 are provided at equal intervals on the fixed plate 215; multiple sliding seats 216 are slidably connected to multiple guide grooves 2151 respectively, and a drive rod 2161 is installed on the sliding seat 216. The drive rod 2161 passes through the arc-shaped groove 2131 and is slidably connected to the arc-shaped groove 2131; multiple clamping seats 217 are respectively installed on the bottom surface of multiple sliding seats 216, and the multiple clamping seats 217 are used to clamp the sealing plug; the rotating disk component is used to drive the turntable 213 to rotate.

[0045] Specifically, by placing the sealing plug to be clamped between multiple clamping seats 217, the turntable 213 is rotated by the rotary disk component. The turntable 213 drives multiple drive rods 2161 to move through multiple arc grooves 2131, thereby driving multiple sliding seats 216 to move simultaneously along multiple guide grooves 2151, and thus driving multiple clamping seats 217 to move simultaneously. This allows the multiple clamping seats 217 to clamp the sealing plug, and the sealing plug is clamped and fixed at the center of the fixing plate 215. At this time, the sealing plug is directly above the end hole of the camshaft.

[0046] like Figure 4As shown, the rotating disk component includes an arc-shaped toothed plate 214, a second motor 218, and a drive gear 219. The arc-shaped toothed plate 214 passes through the through slot 212 and is fixedly connected to the turntable 213. A connecting block is installed on the arc-shaped toothed plate 214, and the arc-shaped toothed plate 214 is fixedly connected to the turntable 213 through the connecting block, which passes through the through slot 212. The second motor 218 is installed on the bottom surface of the lifting plate 202. The drive gear 219 is installed on the power output shaft of the second motor 218, and the drive gear 219 meshes with the arc-shaped toothed plate 214.

[0047] Specifically, by starting the second motor 218, the power output shaft of the second motor 218 will drive the drive gear 219 to rotate, which in turn meshes and drives the arc-shaped toothed plate 214 to rotate. When the arc-shaped toothed plate 214 moves, it will drive the turntable 213 to rotate.

[0048] Working principle: In actual use, the camshaft is placed on the carrier plate 101 and then clamped by the camshaft clamping mechanism 110.

[0049] Next, place the sealing plug to be installed between multiple clamping seats 217. By starting the second motor 218, the power output shaft of the second motor 218 will drive the drive gear 219 to rotate, which in turn meshes and drives the arc-shaped toothed plate 214 to rotate. When the arc-shaped toothed plate 214 moves, it will drive the turntable 213 to rotate.

[0050] The rotating turntable 213 drives multiple drive rods 2161 to move through multiple arc grooves 2131, thereby driving multiple sliding seats 216 to move along multiple guide grooves 2151 simultaneously, and thus driving multiple clamping seats 217 to move simultaneously, so that the multiple clamping seats 217 clamp the sealing plug, and the sealing plug is clamped and fixed at the center of the fixing plate 215, and at this time the sealing plug is directly above the end hole of the camshaft.

[0051] Then, by activating the two hydraulic cylinders 201, the extended ends of the two hydraulic cylinders 201 drive the lifting plate 202 to move downward.

[0052] When the lifting plate 202 moves downward, it will drive the rack 203 to move downward. The downward-moving rack 203 will drive the driven gear 228 to rotate, which in turn will drive the rotating shaft 229 to rotate rapidly through the acceleration gear set 227, which in turn will drive the fan blade 2291 to rotate rapidly. The rotating fan blade 2291 will deliver air into the air guide duct 221, allowing the air to enter the air guide duct 222, and then blow the air out through the movable tube 224 and the air nozzle 225. The air blown out by the air nozzle 225 will blow towards the end hole of the camshaft, thereby cleaning the end hole of the camshaft through airflow.

[0053] As the lifting plate 202 continues to move downward, the cleaning components complete the cleaning process. The lifting plate 202 will then push the movable tube 224 to rotate via the push plate 204, thereby preventing the movable tube 224 and the air nozzle 225 from affecting the connection between the sealing plug and the camshaft.

[0054] Furthermore, when the lifting plate 202 moves downward, it will also drive the clamping assembly 210 to move downward, thereby driving the sealing plug to move downward, and then inserting the sealing plug into the end hole of the camshaft, thus completing the press-fitting of the end hole of the camshaft and the sealing plug.

[0055] Example 2: As Figure 1 and Figures 6-8 As shown, while all other parts are the same as in Embodiment 1, the difference between this embodiment and Embodiment 1 is that the clamping shaft mechanism 110 includes a first motor 118, a vertical rod 119, a plurality of first bevel gears 1191 and a plurality of clamping shaft assemblies.

[0056] The first motor 118 is installed on the inner top surface of the housing 100; the vertical rod 119 is rotatably connected to the housing 100, and the upper end of the vertical rod 119 is fixedly connected to the power output shaft of the first motor 118; multiple first bevel gears 1191 are fixedly sleeved on the vertical rod 119, and each first bevel gear 1191 meshes with a set of second bevel gears 112 of a clamping shaft assembly; multiple sets of clamping shaft assemblies work together to clamp and fix the camshaft.

[0057] The clamping shaft assembly includes a lead screw 111, a second bevel gear 112, two lead screw nuts 113, two movable plates 114, two mounting frames 115, two clamping plates 116, and multiple springs 117.

[0058] The lead screw 111 is rotatably connected to the inner wall of the housing 100, and the threads at both ends of the lead screw 111 are arranged in opposite directions. Both lead screw nuts 113 are sleeved on the lead screw 111. Since the threads at both ends of the lead screw 111 are arranged in opposite directions, when the lead screw 111 rotates, the two lead screw nuts 113 will move simultaneously in opposite directions or simultaneously in opposite directions.

[0059] The second bevel gear 112 is rotatably connected to one end of the lead screw 111, and the second bevel gear 112 meshes with the first bevel gear 1191; both moving plates 114 pass through the slide groove 104 and are slidably connected to the slide groove 104, and the two moving plates 114 are respectively fixedly connected to the two lead screw nuts 113; the two mounting frames 115 are respectively fixedly connected to the ends of the two moving plates 114 away from the lead screw nuts 113; the two clamping plates 116 are respectively slidably connected to the two mounting frames 115, and the side of the clamping plate 116 away from the mounting frame 115 is an arc surface, which is designed to better fit the clamping plate 116 to the camshaft surface. Multiple springs 117 are installed between the clamping plate 116 and the mounting frame 115.

[0060] Specifically, by placing the camshaft that needs to be clamped and fixed on the carrier plate 101, and then starting the first motor 118, the power output shaft of the first motor 118 drives the vertical rod 119 to rotate, thereby driving multiple first bevel gears 1191 on the vertical rod 119 to rotate synchronously, and each first bevel gear 1191 meshes with and drives the corresponding second bevel gear 112 to rotate.

[0061] When the second bevel gear 112 rotates, it will drive the lead screw 111 to rotate, which will cause the two lead screw nuts 113 to move in opposite directions at the same time, which will drive the two moving plates 114 to move in opposite directions at the same time, which will drive the two mounting frames 115 and the two clamping plates 116 to move in opposite directions at the same time, and then fix the camshaft through the clamping plates 116.

[0062] Furthermore, since a spring 117 is provided between the clamping plate 116 and the mounting frame 115, the clamping plate 116 provides a buffer when clamping the camshaft, thus preventing damage to the clamping plate 116 or the camshaft.

[0063] The clamping mechanism 110 uses multiple clamping assemblies to clamp the camshafts in coordination, and combined with the spring 117 buffer structure, it can achieve adaptive clamping of camshafts of different diameters, and can avoid clamping damage, thereby improving the versatility of the device and the workpiece qualification rate.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A camshaft journal hole positioning press fitting device, comprising a carrier plate installed on a box, a plurality of sliding grooves are formed on the box, characterized in that, Also include: Clamping shaft mechanism, the camshaft placed on the object plate is centered clamped and fixed; Pressing mechanism, comprising: Two hydraulic cylinders, both mounted on the box, the extension end is installed with lifting plate; Rack, installed on the bottom of the lifting plate; Clamping assembly, installed on the bottom of the lifting plate, coaxial centering clamping of the sealing plug, and the sealing plug is accurately positioned on the top of the camshaft shaft hole; Cleaning assembly, installed on the top of the box, blowing cleaning of the shaft hole of the camshaft.

2. Camshaft journal hole positioning press fitting device according to claim 1, characterized in that The cleaning assembly comprises: Air duct, installed on the top of the box; Air pipe, fixedly connected with the box through the support seat, one end of which is fixedly connected with the air duct; Movable pipe, one end of which is rotatably connected with the air pipe and internally communicated, the other end of which is provided with an air nozzle; Torsion spring, connected with the air pipe and the movable pipe; Acceleration gear set, installed on the top of the box, having an input shaft and an output shaft; Driven gear, fixedly connected with the input shaft of the acceleration gear set, engaged with the rack; Rotating shaft, fixedly connected with the output shaft of the acceleration gear set; Fan blade, installed on the rotating shaft, located in the air duct.

3. Camshaft journal hole positioning press fitting device according to claim 2, characterized in that The pressing mechanism further comprises: Push plate, installed on the bottom of the lifting plate, located above the movable pipe.

4. The camshaft shaft hole positioning press fitting device according to claim 1, characterized by The clamping assembly comprises: Fixed cylinder, fixedly connected with the bottom of the lifting plate, a through slot is formed in the fixed cylinder; Rotating disc, rotatably connected with the fixed cylinder, a plurality of arc-shaped grooves are equidistantly formed in the rotating disc; Fixed plate, fixedly connected with the bottom of the fixed cylinder, a plurality of guide grooves are equidistantly formed in the fixed plate; A plurality of sliding seats, respectively slidably connected with the guide grooves, a driving rod is installed on each sliding seat, the driving rod penetrates through the arc-shaped groove and is slidably connected with the arc-shaped groove; A plurality of clamping seats, respectively installed on the bottom of each sliding seat, for clamping the sealing plug; Rotating disc component, for driving the rotating disc to rotate.

5. The camshaft shaft end hole positioning press fitting device according to claim 4, characterized in that, The rotating disc component comprises: Arc-shaped tooth plate, penetrating through the through slot and fixedly connected with the rotating disc; Second motor, installed on the bottom of the lifting plate; Driving gear, installed on the power output shaft of the second motor, engaged with the arc-shaped tooth plate.

6. The camshaft shaft hole positioning press fitting device according to claim 1, characterized by The clamping shaft mechanism comprises: First motor, installed on the inner top surface of the box; Vertical rod, rotatably connected with the box, the upper end of the vertical rod is fixedly connected with the power output shaft of the first motor; A plurality of first bevel gears, each fixedly sleeved on the vertical rod; A plurality of clamping shaft assemblies, each for clamping and fixing the camshaft.

7. The camshaft shaft end hole positioning press fitting device according to claim 6, characterized in that, The clamping shaft assembly comprises: Lead screw, rotatably connected with the inner wall of the box, the threads at both ends of the lead screw are oppositely arranged; Second bevel gear, rotatably connected with one end of the lead screw, engaged with the first bevel gear; Two lead screw nuts, each sleeved on the lead screw; Two moving plates, each penetrating through the sliding groove and slidably connected with the sliding groove, each fixedly connected with one of the lead screw nuts; Two mounting frames, each fixedly connected with one end of the moving plate away from the lead screw nut; Two clamping plates, each slidably connected with one of the mounting frames, one side of the clamping plate away from the mounting frame is arc-shaped.

8. The camshaft shaft end hole positioning press fitting device according to claim 7, characterized in that, The clamping shaft assembly further comprises: A plurality of springs are installed between the clamping plate and the mounting frame.

9. The camshaft shaft hole positioning press fitting device according to claim 1, characterized in that, Further comprising: A plurality of supporting legs are installed on the bottom surface of the box and the object plate. A display controller is installed on the box.

10. The camshaft journal hole positioning press installation of claim 9, wherein, Further comprising: A supporting plate is installed on the box, and the two hydraulic cylinders are installed on the top surface of the supporting plate.

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