Automobile rocker arm shaft drilling device

Abstract

The invention relates to the technical field of drilling devices, and particularly discloses an automobile rocker arm shaft drilling device which comprises a rack, a drilling gun, a positioning mechanism and an adjusting mechanism, the positioning mechanism comprises a fixed part, a movable part and a positioning part, a drilling station is arranged on a workbench, the fixed part is fixedly arranged on one side of the drilling station, the movable part is horizontally arranged on the workbench in a sliding mode, and the adjusting mechanism is arranged on the rack. The positioning piece comprises an upper pressing plate and a lower pressing plate, the upper pressing plate is horizontally arranged on the rack in a sliding mode, the lower pressing plate is longitudinally matched with the upper pressing plate in a sliding mode, a positioning hole is formed in the positioning piece, the adjusting mechanism comprises an adjusting piece and a limiting assembly, and the adjusting piece can adjust the position of the upper pressing plate according to the diameter of the rocker arm shaft at the drilling station; the axis of the positioning hole corresponds to the axis of the rocker arm shaft, and the limiting assembly is used for limiting the upper pressing plate; in the drilling process, the drill bit can be prevented from deflecting, or the rocker arm shaft can be prevented from rotating, the drilling precision is ensured, and the rocker arm shaft drilling device can adapt to rocker arm shafts of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and in particular to a drilling device for an automobile rocker arm shaft. Background Art

[0002] In the process of producing automobile rocker shafts, it is necessary to drill holes on the automobile rocker shafts. The existing drilling device is mainly composed of a processing platform, a drilling milling cutter, a lifting device, a power supply device, and a limiting mechanism. The operating principle is: during operation, the staff manually puts the rocker shaft into the surface of the processing platform, and then starts the limiting mechanism to limit and fix the rocker shaft. After the rocker shaft is fixed, the power switch of the entire device is started, so that the lifting device drives the rotating drilling milling cutter to contact the surface of the rocker shaft to perform drilling operations.

[0003] The patent document with publication number CN221870378U discloses a drilling device for rocker arm shaft production, including a workbench and a drill body. The upper ends of the workbench on the left and right sides are fixedly connected to support seats, and hydraulic cylinders are fixedly installed on the upper ends of the two support seats. Clamping assemblies are provided on the opposite side walls of the piston rods of the two hydraulic cylinders. When in use, the rocker arm shaft is placed on the support platform, and the rocker arm shaft is driven to move back and forth by the second electric slide rail, and the rocker arm shaft is driven to be vertically lifted by the electric push rod, which is convenient for positioning with the clamping assembly. The hydraulic cylinder drives the clamping block to cooperate with the arc groove to clamp and position the rocker arm shaft, which is convenient for adjusting the drilling position according to actual needs.

[0004] When the above-mentioned drilling device is used to drill holes in the rocker shaft, the rocker shaft is fixed by clamping assemblies on both sides, so that when the drill bit contacts the cylindrical surface of the rocker shaft, the drill bit is easily offset due to insufficient friction, or the rocker shaft rotates due to uneven force, causing the drilling position to deviate from the predetermined center, affecting the drilling accuracy. In addition, when processing different batches of rocker shafts, the sizes of the rocker shafts are different. In order to ensure that the drill bit corresponds to the center of the rocker shaft, the drilling center of the rocker shaft needs to be re-positioned, which is cumbersome. Summary of the invention

[0005] The present invention provides a drilling device for an automobile rocker shaft, aiming to solve the problems that the drilling position of the drilling device in the related art easily deviates from the predetermined center, affecting the drilling accuracy, and the operation is cumbersome when repositioning the drilling center of the rocker shaft.

[0006] The present invention discloses a drilling device for an automobile rocker arm shaft, comprising a frame, a processing table and a drilling gun arranged on the frame, the drilling gun being longitudinally slidably arranged on the frame, a drill bit being installed at the lower end of the drilling gun, and a positioning mechanism and an adjusting mechanism; The positioning mechanism includes a fixed part, a movable part and a positioning part. A drilling station is provided on the workbench. The fixed part is fixed on one side of the drilling station. The movable part is horizontally slidable along the front-back direction on the workbench, so that the rocker shaft located at the drilling station is fixed between the fixed part and the movable part through the movement of the movable part. The positioning part includes an upper pressing plate and a lower pressing plate. The upper pressing plate is horizontally slidable along the front-back direction on the frame. The lower pressing plate is longitudinally slidably matched with the upper pressing plate. A positioning hole for the drill bit to pass through is provided on the positioning part. The adjusting mechanism includes an adjusting part and a limiting assembly. The adjusting part is horizontally slidable on the frame along the front-rear direction. The adjusting part can adjust the position of the upper pressure plate according to the diameter of the rocker arm shaft at the drilling station so that the positioning hole corresponds to the axis of the rocker arm shaft. The limiting assembly is used to limit the upper pressure plate.

[0007] The rocker arm shaft to be drilled is placed on the drilling station, and then the rocker arm shaft is clamped and fixed between the fixed part and the movable part by moving the movable part, and then the lower pressure plate is moved downward so that the lower pressure plate contacts the rocker arm shaft, and the rocker arm shaft is further fixed to ensure the stability of the rocker arm shaft and prevent it from rotating during the drilling process, thereby improving the drilling accuracy. By setting the positioning hole, when drilling, the drill bit passes through the positioning hole and moves downward to drill, which can improve the stability of the drill bit, avoid the drill bit from slipping and deflecting, and further improve the drilling accuracy; when the size of the rocker arm shaft changes, the distance that the movable part needs to move changes, and at this time, the position of the upper pressure plate can be adjusted by the adjusting part, and then the position of the positioning hole can be adjusted, so that the positioning hole can be adapted to rocker arm shafts of different sizes, and then the drill bit and the drilling center of the rocker arm shaft are made to correspond, without manual adjustment, thereby improving the applicability of the equipment.

[0008] Preferably, the positioning member also includes an elastic telescopic rod, and an elastic member 1 is provided between the upper pressure plate and the lower pressure plate for driving the lower pressure plate to reset. The lower end of the elastic telescopic rod slides through the upper pressure plate and is connected to the lower pressure plate. The upper end of the elastic telescopic rod is provided with a contact portion that can contact the lower end of the drill gun. The elastic force of the elastic telescopic rod is greater than the elastic force of the elastic member 1. The effect is that when the diameter of the rocker arm shaft changes, the lower pressure plate can be adaptively adjusted according to the diameter of the rocker arm shaft through the cooperation of the lower pressure plate, the elastic telescopic rod and the elastic member 1, thereby ensuring that the lower pressure plate can stably fix the rocker arm shaft, improve drilling accuracy, and improve the applicability of the equipment.

[0009] Preferably, mounting brackets for mounting positioning members are provided on the left and right sides of the frame, each mounting bracket is provided with a horizontal slide groove, and a slider 1 is slidably provided in the horizontal slide groove, the two ends of the upper pressure plate are respectively connected to the slider 1 on the corresponding side, and elastic members 2 are respectively provided on the front and rear sides of the slider 1, and the elastic forces of the two elastic members 2 are the same. The adjusting member is arranged on the side of the upper pressure plate away from the fixing member, and a slider 2 is provided on the adjusting member for slidingly cooperating with the horizontal slide groove, the two ends of one elastic member 2 are respectively connected to the slider 1 and the slider 2, and the two ends of the other elastic member 2 are respectively connected to the slider 1 and the end of the horizontal slide groove, and an elastic member 3 for driving the adjusting member to reset is provided between the adjusting member and the frame. The effect is that when the diameter of the rocker arm shaft changes, the slider 2 can be moved by moving the adjusting member, and the position of the upper pressure plate can be adjusted with the cooperation of the slider 1, the slider 2 and the elastic member 2 to ensure that the positioning hole can adapt to rocker arm shafts of different sizes and ensure the drilling accuracy.

[0010] Preferably, a sliding frame is provided on the frame for sliding along the front-to-back direction, the drill gun is longitudinally slidably installed on the sliding frame, scale lines are provided on the frame and the mounting frame, and a tip for indicating the position of the slider is provided on the slider. The effect is that after the position of the upper pressure plate is adjusted by the adjustment mechanism, the sliding frame can be synchronously adjusted according to the moving distance of the slider, so that the drill bit and the positioning hole remain corresponding.

[0011] Preferably, the limit assembly includes a one-way rack 1, a one-way rack 2 and an unlocking structure. The one-way rack 1 is horizontally arranged and fixedly connected to the adjusting member. The one-way rack 2 is longitudinally slidably arranged on the frame, and an elastic member 4 is provided between the one-way rack and the frame for driving the one-way rack 2 to reset. The one-way rack 1 can cooperate with the one-way rack 2 to realize the unidirectional movement of the adjusting member. The unlocking structure is used to release the cooperation between the one-way rack 1 and the one-way rack 2. The effect is that when processing multiple rocker arm shafts of the same specification of the same batch, the upper pressure plate can be limited by the limit assembly to ensure the stability of the upper pressure plate, thereby ensuring the positioning effect and drilling accuracy.

[0012] Preferably, the unlocking structure includes an unlocking rod, which is horizontally slidably arranged on the frame along the front-rear direction, and a slope is provided on the side of the one-way rack 2 facing the unlocking rod, and the slope is inclined from top to bottom toward the direction close to the unlocking rod.

[0013] Preferably, a driving structure for driving the unlocking rod to move is provided on the frame, and the driving structure includes a gear, a rack and a driving tooth. The gear is rotatably matched with the frame through a one-way bearing. An elastic member five for driving the unlocking rod to reset is provided between the unlocking rod and the frame. The rack is provided at the lower end of the unlocking rod, and the rack is meshed with the gear for transmission. The driving tooth is provided on the moving part, and the driving tooth can cooperate with the gear, so that the gear does not rotate when the moving part approaches the fixed part, and the gear rotates when the moving part moves away from the fixed part.

[0014] Preferably, the driving structure also includes a reset member, which includes a square rod and a limit rod. The square rod is arranged between the gear and the frame, one end of the square rod is rotatably cooperated with the frame, and the other end is rotatably cooperated with the gear through a one-way bearing. The limit rod is longitudinally slidably arranged on the frame, and an elastic member six is ​​provided between the limit rod and the frame for driving the limit rod to reset. A limit portion for limiting the rotation of the square rod is provided on the side of the limit rod facing the square rod, and an unlocking portion is provided on the upper end of the limit rod. When the adjusting member moves away from the upper pressure plate, it can contact the unlocking portion and squeeze the limit rod to move downward.

[0015] Preferably, a loading assembly is provided on the frame, and the loading assembly includes a base and a clamping frame. The base and the clamping frame are both provided in two numbers, and a clamping station for accommodating the rocker arm shaft is formed between the two clamping frames. The base is slidably arranged on the frame along the left and right directions, and the clamping frame is slidably arranged on the base longitudinally, and there is a space between the lower end of the clamping frame and the workbench for the rocker arm shaft and the moving part to pass through.

[0016] Preferably, a debris discharge port for waste chips to fall off is provided at the drilling station.

[0017] The beneficial effects of the present invention are: 1. The present invention is provided with a positioning mechanism. During the drilling process, the rocker arm shaft can be clamped and fixed through the cooperation of the fixing part, the moving part and the positioning part to ensure that the rocker arm shaft remains stable and prevents it from rotating due to external force. At the same time, the positioning hole provided on the positioning part can limit the drill bit to prevent it from deflecting and ensure the drilling accuracy.

[0018] 2. The present invention is provided with an adjusting mechanism. When the size of the rocker shaft changes, the distance that the moving part needs to move changes. At this time, the adjusting part can be pushed to move to different degrees, and the position of the upper pressure plate can be adjusted by the movement of the adjusting part, and then the position of the positioning hole is adjusted, so that the positioning hole corresponds to the axis of the rocker shaft, so that the subsequent drill bit corresponds to the drilling center on the rocker shaft, thereby ensuring the drilling accuracy, and being able to adapt to rocker shafts of different sizes, thereby improving the adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a side view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the positioning mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the assembly structure of the positioning mechanism and the adjusting member of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the limiting component of the present invention.

[0024] Figure 6 The present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Figure 7 It is a structural schematic diagram of the driving structure of the present invention.

[0026] Figure 8 The present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0027] Reference numerals: 1. Frame; 11. Sliding frame; 12. Drill gun; 13. Drill bit; 14. Mounting frame; 141. Horizontal slide; 15. Scale line; 16. Base; 17. Clamping frame; 18. Exhaust port; 21. Fixing piece; 22. Moving piece; 23. Positioning piece; 231. Upper pressing plate; 232. Lower pressing plate; 233. Positioning hole; 234. Elastic telescopic rod; 235. Elastic piece 1; 24. Sliding frame; 142. Horizontal slide; 15. Scale line; 16. Base; 17. Clamping frame; 18. Exhaust port; 21. Fixing piece; 22. Moving piece; 23. Positioning piece; 231. Upper pressing plate; 232. Lower pressing plate; 233. Positioning hole; Block one; 241, elastic member two; 31, adjusting member; 311, elastic member three; 32, slider two; 33, one-way rack one; 34, one-way rack two; 341, elastic member four; 35, unlocking rod; 351, elastic member five; 41, gear; 42, rack; 43, driving gear; 44, square rod; 45, limiting rod; 451, elastic member six; 452, limiting part; 453, unlocking part. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figures 1 to 8 As shown, a vehicle rocker shaft drilling device of the present invention comprises a frame 1, a drilling assembly, a positioning mechanism and an adjusting mechanism.

[0030] For ease of understanding, in this embodiment, the length direction of the rack 1 is defined as the front-to-back direction, and the width direction of the rack 1 is defined as the left-to-right direction.

[0031] A processing table is provided on the frame 1, and the drilling assembly includes a sliding frame 11, a drill gun 12 and a drill bit 13. The sliding frame 11 is horizontally slidably arranged on the frame 1 along the front and rear directions, the drill gun 12 is longitudinally slidably arranged on the sliding frame 11, and the drill bit 13 is installed at the lower end of the drill gun 12. The sliding frame 11 is provided with a feeding device for driving the drill gun 12 to move up and down and a driving source for driving the drill bit 13 to rotate.

[0032] The positioning mechanism includes a fixed part 21, a movable part 22 and a positioning part 23. A drilling station is provided on the workbench. The fixed part 21 is fixedly arranged on the front side of the drilling station. The movable part 22 is arranged on the rear side of the drilling station for horizontal sliding along the front-back direction. An electric push rod for driving the movable part 22 to move is provided on the workbench, so that the rocker arm shaft located at the drilling station is fixed between the fixed part 21 and the movable part 22 through the movement of the movable part 22. The positioning part 23 includes an upper pressing plate 231 and a lower pressing plate 232. The upper pressing plate 231 is arranged on the frame 1 for horizontal sliding along the front-back direction. The lower pressing plate 232 is longitudinally slidably matched with the upper pressing plate 231. A positioning hole 233 for the drill bit 13 to pass through is provided on the positioning part 23.

[0033] The adjusting mechanism includes an adjusting member 31 and a limiting assembly. The adjusting member 31 is horizontally slidably arranged on the frame 1 along the front-rear direction. The adjusting member 31 can adjust the position of the upper pressure plate 231 according to the diameter of the rocker arm shaft at the drilling station so that the positioning hole 233 corresponds to the axis of the rocker arm shaft. The limiting assembly is used to limit the upper pressure plate 231.

[0034] Specifically, Figures 1 to 4 As shown, the rocker shaft is placed at the drilling station on the processing table, and the moving part 22 is at the initial position, so that there is enough space between the moving part 22 and the fixed part 21 for placing the rocker shaft, and the upper pressing plate 231 and the lower pressing plate 232 are at the initial positions, the positioning hole 233 is aligned with the drill bit 13, and the adjusting part 31 is at the initial position, waiting for the upper pressing plate 231 to be adjusted; The movable member 22 is pushed by the electric push rod to move toward the fixed member 21, and the rocker shaft is clamped between the fixed member 21 and the movable member 22, so that the initial positioning of the rocker shaft is completed. Then, the lower pressing plate 232 is moved downward so that the lower end of the lower pressing plate 232 contacts the rocker shaft, and the rocker shaft is further pressed to ensure that it remains stable during the drilling process. Then, the drill gun 12 is driven downward by the feeding device to make the drill bit 13 pass through the positioning hole 233. At the same time, the drill bit 13 is driven to rotate by the driving source to perform drilling operations on the rocker arm shaft. During the drilling process, the cooperation of the fixing member 21, the moving member 22 and the lower pressing plate 232 can ensure that the rocker arm shaft remains stable and prevents it from moving due to external forces. At the same time, the positioning hole 233 provided on the positioning member 23 can limit the drill bit 13 to prevent it from deflecting and ensure the drilling accuracy. After the drilling is completed, the moving member 22 and the positioning member 23 return to the initial position so as to carry out the processing of the next rocker arm shaft. If the diameter of the rocker shaft changes, the distance moved by the movable member 22 will be different. At this time, the movement of the movable member 22 can push the adjusting member 31 to move to different degrees. The adjusting member 31 pushes the upper pressure plate 231 to slide by horizontal sliding to adjust the position of the positioning hole 233, so that the positioning hole 233 and the axis of the rocker shaft remain corresponding, ensuring that the drill bit 13 can be accurately aligned with the drilling center of the rocker shaft. After completing the adjustment of the position of the upper pressure plate 231, the upper pressure plate 231 is limited by the limit assembly to prevent it from moving during the subsequent drilling process, ensuring that the positioning hole 233 and the axis of the rocker shaft always remain accurately corresponding.

[0035] In some embodiments, the positioning member 23 also includes an elastic telescopic rod 234, and an elastic member 235 is provided between the upper pressure plate 231 and the lower pressure plate 232 for driving the lower pressure plate 232 to reset. The elastic force direction of the elastic member 235 is the same as the sliding direction of the lower pressure plate 232. The elastic member 235 can be a spring. The lower end of the elastic telescopic rod 234 slides through the upper pressure plate 231 and is connected to the lower pressure plate 232. The upper end of the elastic telescopic rod 234 is provided with a contact portion that can contact the lower end of the drill gun 12. The elastic force of the elastic telescopic rod 234 is greater than the elastic force of the elastic member 235.

[0036] Specifically, Figures 1 to 5 As shown in the figure, in the initial state, the lower pressing plate 232 is in the initial position, at this time, the elastic telescopic rod 234 is in a naturally extended state, and the elastic member 235 is in a non-stressed state, so that the distance between the lower pressing plate 232 and the upper pressing plate 231 is small, so that there is enough space under the lower pressing plate 232 for the rocker shaft to enter the drilling station, and the drill gun 12 is driven downward by the feeding device to make the drill bit 13 pass downward through the positioning hole 233 until the lower end of the drill gun 12 is aligned with the positioning hole 233 provided on the elastic telescopic rod 234. The contact parts are in contact. At this time, as the drill gun 12 continues to move downward, the elastic telescopic rod 234 begins to be stressed. Since the elastic force of the elastic telescopic rod 234 is greater than the elastic force of the elastic member 235, the movement of the drill gun 12 will push the lower pressure plate 232 downward through the elastic telescopic rod 234. During the downward movement of the lower pressure plate 232, the elastic member 235 is stretched to store force until the lower end of the lower pressure plate 232 contacts the rocker shaft located at the drilling station, thereby fixing the rocker shaft. At this time, as the drill gun 12 continues to move downward, the lower pressure plate 232 is blocked by the rocker shaft and stops moving. The further movement of the drill gun 12 will compress the elastic telescopic rod 234, causing it to shrink, making way for the drill gun 12 to continue to move downward so that the drill bit 13 can continue to move downward to drill. After the drilling is completed, the drill gun 12 moves upward, the elastic telescopic rod 234 returns to its natural extended state, and the elastic member 235 releases its elastic potential energy, driving the lower pressure plate 232 to move upward to complete the reset; therefore, when the diameter of the rocker shaft changes, the distance that the drill gun 12 moves downward will be different. At this time, the lower pressure plate 232 can be adaptively adjusted according to the size of the rocker shaft through the cooperation of the lower pressure plate 232, the elastic telescopic rod 234 and the elastic member 235, ensuring that the lower pressure plate 232 can stably fix the rocker shaft, improve drilling accuracy, and improve the applicability of the equipment.

[0037] In some embodiments, mounting frames 14 for mounting the positioning member 23 are provided on both the left and right sides of the frame 1, and each mounting frame 14 is provided with a horizontal slide groove 141, and a slider 24 is slidably provided in the horizontal slide groove 141, and the two ends of the upper pressure plate 231 are respectively connected to the slider 24 on the corresponding side, and elastic members 241 are respectively provided on the front and rear sides of the slider 24, and the elastic force directions of the two elastic members 241 are the same as the sliding direction of the slider 24, and the elastic forces of the two elastic members 241 are the same, and the elastic member 241 can be a spring, and the adjusting member 31 is set On the side of the upper pressure plate 231 away from the fixing member 21, a slider 2 32 slidably matched with the horizontal slide groove 141 is provided on the adjusting member 31, two ends of one elastic member 241 are respectively connected to the slider 1 24 and the slider 2 32, and two ends of the other elastic member 241 are respectively connected to the slider 1 24 and the end of the horizontal slide groove 141, an elastic member 311 is provided between the adjusting member 31 and the frame 1 for driving the adjusting member 31 to reset, the elastic force direction of the elastic member 311 is the same as the sliding direction of the adjusting member 31, and the elastic member 311 can be a spring.

[0038] Specifically, Figures 1 to 5 As shown, in the initial state, the slider 1 24 is kept at the center position between the slider 2 32 and the end of the horizontal slide groove 141 under the elastic force of the elastic members 2 241 on both sides, so that the upper pressing plate 231 is located at the initial position. At this time, the elastic member 311 is in a non-stressed state, and the adjusting member 31 is kept at the initial position under the elastic force of the elastic member 311; When the electric push rod drives the moving member 22 to move toward the direction close to the fixed member 21, the moving member 22 will contact the adjusting member 31 in the initial position and push the adjusting member 31 to move toward the position close to the upper pressure plate 231. As the adjusting member 31 moves, the slider 2 32 will move. At this time, under the elastic force of the two elastic members 241, the slider 1 24 will be in the center position between the slider 2 32 and the end of the horizontal slide groove 141 after the movement, that is, the slider 1 24 moves. The upper pressure plate 231 moves, thereby causing the positioning hole 233 on the positioning member 23 to move. During this process, if the adjusting member 31 moves a set distance relative to the initial position, the slider 2 32 will move a set distance relative to the initial position. At this time, under the centering action of the elastic member 2 241 on both sides, the slider 1 24 moves half of the set distance, that is, the positioning member 23 moves half of the set distance, so that the positioning hole 233 on the positioning member 23 remains corresponding to the axis of the rocker shaft, so that the positioning member 23 can adapt to rocker shafts of different sizes.

[0039] It should be noted that both the frame 1 and the mounting frame 14 are provided with scale lines 15 , and the slider 1 24 is provided with a tip for indicating the position of the slider 1 24 .

[0040] Specifically, Figures 1 to 4 As shown, when the position of the upper pressure plate 231 is adjusted by the adjustment mechanism, the slider 24 will slide along the horizontal slide groove 141. After the adjustment is completed, by observing the scale line 15 on the mounting frame 14, the moving distance of the slider 24 can be obtained, and then according to this distance, the sliding frame 11 is moved the same distance along the scale line 15 on the frame 1. At this time, the drill bit 13 and the positioning hole 233 set on the positioning member 23 remain corresponding.

[0041] In some embodiments, the limiting assembly includes a one-way rack 1 33, a one-way rack 2 34 and an unlocking structure. The one-way rack 1 33 is horizontally arranged and fixedly connected to the adjusting member 31. The one-way rack 2 34 is longitudinally slidably arranged on the frame 1, and an elastic member 4 341 is provided between the frame 1 and the one-way rack 2 34 for driving the one-way rack 2 34 to reset. The elastic force direction of the elastic member 4 341 is the same as the sliding direction of the one-way rack 2 34. The elastic member 4 341 can be a spring. The one-way rack 1 33 can cooperate with the one-way rack 2 34 to realize the unidirectional movement of the adjusting member 31. The unlocking structure is used to release the cooperation between the one-way rack 1 33 and the one-way rack 2 34.

[0042] In the production process of rocker arm shafts, rocker arm shafts are mostly processed in batches, and the rocker arm shafts in the same batch have the same size. Therefore, when processing the first rocker arm shaft of a batch, the position of the positioning member 23 is adjusted by the adjustment mechanism to make the positioning member 23 match the size of the rocker arm shaft, and then the adjusted positioning member 23 is positioned by the limit mechanism, so that during the processing of the batch of rocker arm shafts, there is no need to use the adjustment mechanism to adjust the positioning member 23 again. Specifically, Figures 2 to 8 As shown, in the initial state, the adjusting member 31 is located at the initial position. After the first rocker arm shaft of a batch is placed at the drilling station, the rocker arm shaft is clamped by moving the moving member 22. In this process, the adjusting member 31 can be pushed to move, and the position of the positioning member 23 can be adjusted by the adjusting member 31. With the movement of the adjusting member 31, the one-way rack 1 33 will be driven to move synchronously. Due to the one-way cooperation between the one-way rack 1 33 and the one-way rack 2 34, the one-way rack 2 34 compresses the elastic member 4 341 to move downward to make way until the adjusting member 31 completes the adjustment of the positioning member 23 and stops moving. The one-way rack 1 33 and the adjusting member 31 are limited and fixed, that is, the positioning member 23 is limited, so that when the remaining rocker arm shafts of the batch are drilled later, the upper pressure plate 231 can remain stationary, and there is no need to adjust the upper pressure plate 231 again through the adjustment mechanism. After completing the processing of the batch of rocker arm shafts, the one-way rack 1 33 and the one-way rack 2 34 are released from the cooperation through the unlocking structure. At this time, the one-way rack 1 33 and the adjusting member 31 will move in the opposite direction under the action of the elastic member 311 to reset, so as to prepare for the next adjustment.

[0043] In some embodiments, the unlocking structure includes an unlocking rod 35, which is horizontally slidable on the frame 1 along the front and rear directions. The frame 1 is provided with a driving member for driving the unlocking rod 35 to move. The driving member can be a cylinder, an electric push rod, etc. The one-way rack 2 34 is provided with an inclined surface on the side facing the unlocking rod 35, and the inclined surface is inclined from top to bottom toward the direction close to the unlocking rod 35.

[0044] Specifically, Figures 4 to 8 As shown, when it is necessary to release the limit on the upper pressure plate 231, the unlocking rod 35 is driven by the driving member to move in the direction close to the one-way rack 2 34, so that the unlocking rod 35 contacts the inclined surface provided on the one-way rack 2 34. At this time, as the unlocking rod 35 continues to move, the one-way rack 2 34 will move downward under the guidance of the inclined surface, and the cooperation between the one-way rack 2 34 and the one-way rack 1 33 will be released. At this time, the adjusting member 31 will be reset to the initial position under the action of the elastic member 311, and the limit on the upper pressure plate 231 will be released, so that the upper pressure plate 231 will be reset to the initial position under the action of the elastic member 2 241.

[0045] In some embodiments, a driving structure for driving the unlocking rod 35 to move is provided on the frame 1, and the driving structure includes a gear 41, a rack 42, a driving tooth 43 and a reset member. The gear 41 is rotatably matched with the frame 1 through a one-way bearing. An elastic member 351 for driving the unlocking rod 35 to reset is provided between the unlocking rod 35 and the frame 1. The elastic force direction of the elastic member 351 is the same as the sliding direction of the unlocking rod 35. The elastic member 351 can be a spring. The rack 42 is provided at the lower end of the unlocking rod 35, and the rack 42 is meshed with the gear 41 for transmission. The driving tooth 43 is provided on the moving member 22, and the driving tooth 43 can cooperate with the gear 41. The front and rear sides of the driving tooth 43 are respectively provided with an inclined surface and a vertical surface. In the process of the moving member 22 approaching the fixed member 21, the gear 41 will cooperate with the inclined surface on the driving tooth 43, so that the gear 41 does not rotate. When the moving member 22 is away from the fixed member 21, the gear 41 will cooperate with the inclined surface on the driving tooth 43, so that the gear 41 does not rotate. During the process of member 21, the gear 41 will cooperate with the vertical surface on the driving tooth 43, so that the gear 41 rotates. The reset member includes a square rod 44 and a limit rod 45. The square rod 44 is arranged between the gear 41 and the frame 1. One end of the square rod 44 is rotatably cooperated with the frame 1, and the other end is rotatably cooperated with the gear 41 through a one-way bearing. The limit rod 45 is longitudinally slidably arranged on the frame 1, and an elastic member 6 451 is provided between the frame 1 for driving the limit rod 45 to reset. The elastic force direction of the elastic member 6 451 is the same as the sliding direction of the limit rod 45. The elastic member 6 451 can be a spring. The limit rod 45 is provided with a limit portion 452 for limiting the rotation of the square rod 44 on the side facing the square rod 44, and an unlocking portion 453 is provided on the upper end of the limit rod 45. When the adjusting member 31 moves away from the lower pressure plate 232, it can contact the unlocking portion 453 and squeeze the limit rod 45 to move downward.

[0046] Specifically, Figures 2 to 8 As shown, when the electric push rod drives the moving member 22 to move in the direction close to the fixed member 21, the driving gear 43 will be driven to move synchronously. During this process, the gear 41 will cooperate with the inclined surface on the driving gear 43, so that the gear 41 does not rotate. When the electric push rod drives the moving member 22 to move in the direction away from the fixed member 21, the gear 41 will cooperate with the vertical surface on the driving gear 43, so that the gear 41 rotates. At this time, the gear 41 and the rack 42 cooperate to drive the rack 4 2 moves toward the direction close to the one-way rack 2 34, that is, each time the moving member 22 is reset, the rack 42 moves toward the direction close to the one-way rack 2 34 until the end of the rack 42 contacts the inclined surface on the one-way rack 2 34, and under the guidance of the inclined surface, the one-way rack 2 34 is pushed downward, the cooperation between the one-way rack 1 33 and the one-way rack 2 34 is released, the limit on the upper pressure plate 231 is released, and the upper pressure plate 231 and the adjusting member 31 are reset to the initial position, so as to prepare for the next adjustment; During the rotation of the gear 41, the gear 41 will rotate relative to the square rod 44. At the same time, the limiting portion 452 provided on the limiting rod 45 can limit the square rod 44, that is, limit the gear 41 so that the gear 41 cannot rotate in the opposite direction. After the limiting of the upper pressure plate 231 is released, the upper pressure plate 231 and the adjusting member 31 are reset to the initial position. During the reset of the adjusting member 31, the adjusting member 31 will contact the unlocking portion 453 provided on the limiting rod 45 and squeeze the limiting rod 45 to move downward. The movement of the limiting rod 45 will drive the limiting portion 452 to move synchronously. The gear 41 is rotated in the opposite direction by the square rod 44 and the square rod 44 moves downward and compresses the elastic member 451 to store force. With the movement of the limit portion 452, the square rod 44 loses the obstruction of the limit portion 452, so that the square rod 44 and the gear 41 can rotate. At this time, under the action of the elastic member 5 351 storing force, the unlocking rod 35 is driven to move in the opposite direction to reset. With the movement of the unlocking rod 35, the rack 42 is driven to move synchronously, and the gear 41 is driven to rotate in the opposite direction through the meshing transmission between the rack 42 and the gear 41. At this time, the gear 41 and the square rod 44 rotate in the opposite direction synchronously until the gear 41 is reset. The number of teeth on the rack 42 can be limited according to the number of each batch of rocker arm shafts. Specifically, the number of teeth on the rack 42 can be set to 10. If the number of a batch of rocker arm shafts is 10, when the first rocker arm shaft of the batch is clamped by the moving member 22, the position of the upper pressure plate 231 can be adjusted by the adjustment mechanism, and the upper pressure plate 231 can be limited by the limit assembly so that the positioning member 23 is adapted to the batch of rocker arm shafts. After the processing of the first rocker arm shaft is completed, the moving member 22 moves in the opposite direction for reset. At this time, the gear 41 and the rack are used to adjust the position of the upper pressure plate 231. The cooperation between 42 and the driving tooth 43 causes the rack 42 to move a distance of one tooth toward the direction close to the one-way rack 234, and after the moving part 22 completes 10 reciprocating resets, the rack 42 moves a distance of 10 teeth. At this time, the unlocking rod 35 just cooperates with the one-way rack 234 to release the limit on the upper pressure plate 231; if the number of a batch of rocker arm shafts is 8, the moving part 22 can also be reset 10 times back and forth, that is, the first eight times are to clamp the corresponding rocker arm shafts, and the last two times are to perform empty push, so that after 10 operations, the limit on the upper pressure plate 231 is automatically released.

[0047] In some embodiments, a loading assembly is provided on the frame 1, and the loading assembly includes a base 16 and a clamping frame 17. The base 16 and the clamping frame 17 are both provided in two numbers, and a clamping station for accommodating the rocker arm shaft is formed between the two clamping frames 17. The clamping frame 17 is longitudinally slidably provided on the base 16, and the base 16 is slidably provided on the frame 1 along the left and right directions so that the two clamping frames 17 can approach or move away from each other, and there is space between the lower end of the clamping frame 17 and the workbench for the rocker arm shaft and the moving part 22 to pass through.

[0048] Specifically, Figures 1 to 5 As shown, according to the length of the rocker shaft to be processed, the base 16 is adjusted so that the clamping station formed between the two clamping frames 17 is adapted to the rocker shaft, and then the rocker shafts are stacked in the clamping station. When the moving part 22 is driven by the electric push rod to move, the moving part 22 will pass through the lower end of the clamping frame 17 and push the rocker shaft located at the bottom of the clamping station to move, and the rocker shaft is pushed to the drilling station for drilling, thereby realizing automatic loading of the rocker shaft. When the moving part 22 is driven by the electric push rod to move in the opposite direction for resetting, the rocker shaft located in the clamping station will fall down for replenishment, preparing for the next loading.

[0049] In some embodiments, a debris discharge port 18 is provided at the drilling station for waste chips to fall off. Figure 1 As shown, the waste chips generated during the drilling process can fall downward through the debris discharge port 18, thereby preventing the waste chips from accumulating at the drilling station and affecting the clamping of the rocker arm shaft, thereby ensuring the drilling accuracy.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A drilling device for an automobile rocker arm shaft, comprising a frame (1), a processing table and a drilling gun (12) being arranged on the frame (1), the drilling gun (12) being longitudinally slidably arranged on the frame (1), a drill bit (13) being mounted at the lower end of the drilling gun (12), characterized in that: It also includes a positioning mechanism and an adjustment mechanism; The positioning mechanism comprises a fixed part (21), a movable part (22) and a positioning part (23); a drilling station is provided on the workbench; the fixed part (21) is fixedly arranged on one side of the drilling station; the movable part (22) is arranged on the workbench to slide horizontally in the front-rear direction, so that the rocker shaft located at the drilling station is fixed between the fixed part (21) and the movable part (22) by the movement of the movable part (22); the positioning part (23) comprises an upper pressing plate (231) and a lower pressing plate (232); the upper pressing plate (231) is arranged on the frame (1) to slide horizontally in the front-rear direction; the lower pressing plate (232) and the upper pressing plate (231) are longitudinally slidably matched; and a positioning hole (233) for the drill bit (13) to pass through is provided on the positioning part (23); The adjustment mechanism comprises an adjustment member (31) and a limit assembly. The adjustment member (31) is arranged on the frame (1) so as to slide horizontally in the front-rear direction. The adjustment member (31) can adjust the position of the upper pressing plate (231) according to the diameter of the rocker shaft at the drilling station so that the positioning hole (233) corresponds to the axis of the rocker shaft. The limit assembly is used to limit the position of the upper pressing plate (231).

2. The automobile rocker shaft drilling device according to claim 1, characterized in that: The positioning member (23) further comprises an elastic telescopic rod (234); an elastic member (235) for driving the lower pressing plate (232) to reset is provided between the upper pressing plate (231) and the lower pressing plate (232); the lower end of the elastic telescopic rod (234) slides through the upper pressing plate (231) and is connected to the lower pressing plate (232); the upper end of the elastic telescopic rod (234) is provided with a contact portion capable of contacting the lower end of the drill gun (12); and the elastic force of the elastic telescopic rod (234) is greater than the elastic force of the elastic member (235).

3. According to the automobile rocker shaft drilling device of claim 1, the left and right sides of the frame (1) are provided with mounting frames (14) for mounting the positioning member (23), each mounting frame (14) is provided with a horizontal slide groove (141), and a slider (24) is slidably provided in the horizontal slide groove (141), the two ends of the upper pressure plate (231) are respectively connected to the slider (24) on the corresponding side, and the front and rear sides of the slider (24) are respectively provided with elastic members (241), the elastic forces of the two elastic members (241) are the same, and the adjusting member ( The adjusting member (31) is arranged on a side of the upper pressure plate (231) away from the fixing member (21), and a sliding block (32) slidably matched with the horizontal slide groove (141) is provided on the adjusting member (31), wherein two ends of one elastic member (241) are respectively connected to the sliding block (24) and the sliding block (32), and two ends of the other elastic member (241) are respectively connected to the sliding block (24) and the end of the horizontal slide groove (141), and an elastic member (311) is provided between the adjusting member (31) and the frame (1) for driving the adjusting member (31) to reset.

4. The automobile rocker shaft drilling device according to claim 3, characterized in that: A sliding frame (11) is provided on the frame (1) for sliding along the front-rear direction, a drill gun (12) is longitudinally slidably mounted on the sliding frame (11), scale lines (15) are provided on the frame (1) and the mounting frame (14), and a tip for indicating the position of the sliding frame (24) is provided on the sliding block (24).

5. The automobile rocker shaft drilling device according to claim 1, characterized in that: The limiting assembly comprises a one-way rack (33), a one-way rack (34) and an unlocking structure. The one-way rack (33) is horizontally arranged and fixedly connected to the adjusting member (31). The one-way rack (34) is longitudinally slidably arranged on the frame (1). An elastic member (341) is arranged between the one-way rack (34) and the frame (1) for driving the one-way rack (34) to reset. The one-way rack (33) can cooperate with the one-way rack (34) to realize the one-way movement of the adjusting member (31). The unlocking structure is used to release the cooperation between the one-way rack (33) and the one-way rack (34).

6. The automobile rocker shaft drilling device according to claim 5, characterized in that: The unlocking structure comprises an unlocking rod (35), the unlocking rod (35) being arranged on the frame (1) for horizontal sliding along the front-rear direction, and a second one-way rack (34) being provided with an inclined surface on a side facing the unlocking rod (35), the inclined surface being inclined from top to bottom in a direction close to the unlocking rod (35).

7. The automobile rocker shaft drilling device according to claim 6, characterized in that: A driving structure for driving the unlocking rod (35) to move is provided on the frame (1), the driving structure comprising a gear (41), a rack (42) and a driving tooth (43); the gear (41) is rotatably matched with the frame (1) via a one-way bearing; an elastic member (351) for driving the unlocking rod (35) to reset is provided between the unlocking rod (35) and the frame (1); the rack (42) is provided at the lower end of the unlocking rod (35), and the rack (42) and the gear (41) are meshed for transmission; the driving tooth (43) is provided on the moving member (22), and the driving tooth (43) can cooperate with the gear (41), so that when the moving member (22) approaches the fixed member (21), the gear (41) does not rotate, and when the moving member (22) moves away from the fixed member (21), the gear (41) rotates.

8. The automobile rocker shaft drilling device according to claim 7, characterized in that: The driving structure further comprises a reset member, which comprises a square rod (44) and a limit rod (45); the square rod (44) is arranged between the gear (41) and the frame (1); one end of the square rod (44) is rotationally matched with the frame (1), and the other end is rotationally matched with the gear (41) via a one-way bearing; the limit rod (45) is longitudinally slidably arranged on the frame (1), and an elastic member (451) for driving the limit rod (45) to reset is arranged between the limit rod and the frame (1); a limit portion (452) for limiting the rotation of the square rod (44) is arranged on a side of the limit rod (45) facing the square rod (44); an unlocking portion (453) is arranged at the upper end of the limit rod (45); when the adjusting member (31) moves away from the upper pressing plate (231), it can contact the unlocking portion (453) and press the limit rod (45) to move downward.

9. The automobile rocker shaft drilling device according to claim 1, characterized in that: A loading assembly is provided on the frame (1), the loading assembly comprising a base (16) and a clamping frame (17), the base (16) and the clamping frame (17) are both provided in two pieces, a clamping station for accommodating a rocker shaft is formed between the two clamping frames (17), the base (16) is slidably provided on the frame (1) in the left-right direction, the clamping frame (17) is slidably provided on the base (16) in the longitudinal direction, and a space is provided between the lower end of the clamping frame (17) and the workbench for the rocker shaft and the moving member (22) to pass through.

10. The automobile rocker shaft drilling device according to claim 1, characterized in that: A debris discharge port (18) is provided at the drilling station for waste chips to fall off.

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