Multi-station machining station for machining large flange cam shaft

Abstract

The utility model discloses a multi-station machining station for machining a large flange cam shaft, and particularly relates to the technical field of cam shaft machining, the multi-station machining station comprises a machine box, a rotating base, a rotating ring and a rotating workbench, a gear box is arranged at the center of the machine box, and the rotating base is arranged at the upper end of the gear box; through the contact mode of the rolling balls, the rotating ring and the rotating base, an extremely efficient load dispersing structure is formed, after being transmitted to the rotating ring, huge pressure generated by a cam shaft with the weight of several tons can be evenly distributed to all the rolling balls, the pressure can be transmitted in a more even and more dispersed mode, and therefore the load dispersing effect is improved. By means of the technical scheme, the stress peak value of a single contact point is greatly reduced, the whole structure has the capacity of bearing several tons of heavy pressure, load torque can be shared through double-side driving, motors on the two sides can provide power or braking force at the same time, and it is ensured that the cam shaft placed on the workbench can rotate to different stations in a stable and accurate posture.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft processing, and more specifically, to a multi-station processing station for processing a large flange camshaft. Background Art

[0002] Camshaft machining tooling is a special tooling equipment used to process camshafts. The camshaft is a key component in the engine, used to control the opening and closing timing of the valves. In order to ensure the accuracy and quality of the camshaft, special tooling is required for processing;

[0003] After searching, the existing patent (publication number: CN210849213U) discloses a camshaft processing tool. It includes a base plate, on which a rotating rod is rotatably connected through a rotating component, the top of the rotating rod is fixedly connected to a rotating plate, the rotating plate is fixedly connected to a tooling table, the tooling table is fixedly connected to a fixed plate, the tooling table is movably provided with a movable plate through an adjustment component, the tops of the fixed plate and the movable plate are both embedded with electric push rods, the extended ends of the two electric push rods are both fixedly connected to a fixing frame, the two fixing frames are both provided with an arc-shaped support plate, and the two fixing frames are also provided with a clamping component. This utility model can effectively clamp and fix the camshaft at each position, and the height of the camshaft can be adjusted after it is fixed, thereby improving the fixing effect and improving practicality. In the process of realizing this utility model, the inventor found that the prior art has the following problems:

[0004] Existing processing tooling is usually made of high-density metal materials, such as alloy steel, to ensure the strength and wear resistance of large flange camshafts in the working environment due to their large size. As a result, the camshaft itself weighs several tons. The several-ton camshaft causes vibration, noise, and even structural deformation during operation of the entire equipment. In addition, the manufacturing of large flange camshafts involves multiple different processing processes, and the sequential nature of the processes requires that the camshaft must be transferred between different workstations in a specific order. This leads to errors during transfer due to multiple clamping and processing on different equipment.

[0005] Therefore, in order to solve the above problems, a multi-station processing station for processing large flange camshafts is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-station processing station for processing a large flange camshaft to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-station processing station for processing a large flange camshaft, comprising a chassis, a rotating base, a rotating ring and a rotating worktable, a gear box being provided at the center of the chassis, a first motor being installed at the center of the lower end surface of the gear box, a first-stage bevel gear shaft being installed at the bottom of the gear box inner cavity, a second-stage bevel gear shaft being installed at the side wall of the gear box, and a third-stage bevel gear shaft being installed at the top of the gear box inner cavity, one end of the third-stage bevel gear shaft protruding from the gear box being connected to and installed with a transmission shaft;

[0008] The rotating base is arranged at the upper end of the gear box, and a fixing ring is installed on the outer surface of the rotating base. The rotating ring is arranged at the upper end of the rotating base, and a slide groove is provided on one side of the rotating base opposite to the rotating ring, and a ball is installed on the opposite surface between the two groups of the slide grooves. The rotating worktable is installed at the upper end of the rotating ring, and the end of the transmission shaft away from the three-stage bevel gear shaft is connected to the rotating worktable. The outer ring of the rotating worktable is provided with a gear ring, and mounting seats are provided on both sides of the chassis. The opposite surfaces of the upper end of the mounting seat are provided with an installation chamber, and the inner cavity of the installation chamber is installed with a driving gear. The lower end of the installation chamber is installed with a second motor, and the upper end surface of the rotating worktable is provided with a clamping assembly.

[0009] Preferably, the clamping assembly includes a limiting plate, which is arranged at the edge of the upper end surface of the rotating workbench. There are two groups of limiting plates, one side of which is provided with a cylinder, and the telescopic end of the cylinder is installed with a clamping plate.

[0010] Preferably, the first-stage bevel gear shaft is meshedly connected to the second-stage bevel gear shaft, and the second-stage bevel gear shaft is meshedly connected to the third-stage bevel gear shaft.

[0011] Preferably, when the first-stage bevel gear shaft rotates along with the output end of the first motor, the second-stage bevel gear shaft and the third-stage bevel gear shaft are linked to drive the transmission shaft to realize rotational motion.

[0012] Preferably, the second motor is used to drive the driving gear to rotate around its axis, and the two groups of driving gears are respectively engaged with the installation chamber. When the driving gear rotates with the output end of the second motor, the driving gear is driven to engage with the installation chamber to realize rotational motion.

[0013] Preferably, the clamping assemblies are provided in four groups, and the four groups of the clamping assemblies are equidistantly arranged around the upper end surface of the rotary workbench, and the telescopic end of the cylinder drives the clamping plate to realize telescopic movement.

[0014] The technical effects and advantages of this utility model are:

[0015] 1. Compared with the existing technology, the multi-station processing station used for large flange camshaft processing forms an extremely efficient load distribution structure through the contact between the balls, the rotating ring and the rotating base. The huge pressure generated by the camshaft weighing several tons will be evenly distributed to each ball after being transmitted to the rotating ring. The pressure can be transmitted in a more uniform and dispersed form, greatly reducing the stress peak of a single contact point, so that the overall structure has the ability to withstand several tons of pressure.

[0016] 2. Compared with the existing technology, the multi-station processing station for large flange camshaft processing assists rotation by setting motor-driven active gears on both sides of the rotary worktable to engage with the outer ring gear groove. This double-sided drive method can make the rotary table receive more uniform driving force. The double-sided drive can share the load torque, and when starting and stopping rotation, the motors on both sides can provide power or braking force at the same time, ensuring that the camshaft placed on the worktable can be rotated to different stations in a smooth and precise posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front cross-section structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the rotating base of the utility model.

[0019] Figure 3 This is a schematic diagram of the top-sectional structure of the rotating ring of the utility model.

[0020] Figure 4 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the figure.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention.

[0022] The accompanying drawings are marked as follows: 1. chassis; 2. gear box; 3. first motor; 4. first-stage bevel gear shaft; 5. second-stage bevel gear shaft; 6. third-stage bevel gear shaft; 61. transmission shaft; 7. rotating base; 8. fixing ring; 9. rotating ring; 10. rolling ball; 11. slide groove; 12. rotating worktable; 13. gear ring; 14. mounting seat; 141. mounting chamber; 15. driving gear; 16. second motor; 17. clamping assembly; 171. limit plate; 172. cylinder; 173. clamping plate. DETAILED DESCRIPTION

[0023] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] As attached Figures 1 to 5 The multi-station processing station for processing a large flange camshaft shown in the figure includes a chassis 1, a rotating base 7, a rotating ring 9 and a rotating worktable 12. A gearbox 2 is opened at the center of the chassis 1, and a first motor 3 is installed at the center of the lower end surface of the gearbox 2. A first-stage bevel gear shaft 4 is installed at the bottom of the inner cavity of the gearbox 2, and a second-stage bevel gear shaft 5 is installed on the side wall of the gearbox 2. A third-stage bevel gear shaft 6 is installed at the top of the inner cavity of the gearbox 2. One end of the third-stage bevel gear shaft 6 protrudes from the gearbox 2 and is connected to a transmission shaft 61.

[0025] The rotating base 7 is arranged at the upper end of the gear box 2, and a fixing ring 8 is installed on the outer surface of the rotating base 7. The rotating ring 9 is arranged at the upper end of the rotating base 7. A slide groove 11 is provided on the side opposite to the rotating base 7 and the opposite surface of the rotating ring 9. The opposite surface between the two sets of slide grooves 11 is installed with a ball 10. The rotating worktable 12 is installed at the upper end of the rotating ring 9. The end of the transmission shaft 61 away from the three-stage bevel gear shaft 6 is connected to the rotating worktable 12. The outer ring of the rotating worktable 12 is provided with a gear ring 13. Mounting seats 14 are provided on both sides of the chassis 1. The opposite surface of the upper end of the mounting seat 14 is provided with an installation chamber 141. The inner cavity of the installation chamber 141 is installed with a driving gear 15. The lower end of the installation chamber 141 is installed with a second motor 16. The upper end surface of the rotating worktable 12 is provided with a clamping assembly 17.

[0026] Among them: the multi-stage bevel gear shaft is installed in the gear box 2 at the center of the chassis 1, realizing the protection function of the transmission system. The first motor 3 is used as the power source, and the multi-stage bevel gear transmission system composed of the first-stage bevel gear shaft 4, the second-stage bevel gear shaft 5 and the third-stage bevel gear shaft 6 drives the transmission shaft 61 to rotate, thereby effectively converting the high-speed rotation power of the first motor 3 into a torque and speed suitable for the operation of the rotary workbench 12. The rolling ball 10 between the rotating base 7 and the rotating ring 9 can roll in the slide groove 11, and the fixed ring 8 limits the rotating base 7 in the gear box 2, carries the load of the rotating workbench 12, and evenly distributes the weight. It is distributed on several balls 10, so it has excellent load-bearing capacity and can stably support a flange camshaft weighing several tons. The contact method between the balls 10 and the slide 11 can evenly disperse the huge weight, avoiding structural deformation or damage caused by excessive local force. The second motor 16 in the mounting seat 14 on both sides of the chassis 1 drives the driving gear 15 in the mounting chamber 141, which engages with the gear ring 13 on the outer ring of the rotary worktable 12, thereby realizing the driving of the rotary worktable 12 by the second motor 16 on both sides. This bilateral driving method greatly enhances the driving torque of the rotary worktable 12, which is suitable for carrying a flange camshaft weighing several tons. Example 2

[0027] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 5 As shown, see the following description for details:

[0028] As a preferred embodiment, the clamping assembly 17 includes a limiting plate 171, which is arranged at the edge of the upper end surface of the rotary worktable 12. There are two groups of limiting plates 171, and a cylinder 172 is provided on one side of one group of limiting plates 171. The telescopic end of the cylinder 172 is installed with a clamping plate 173; further, the clamping assembly 17 on the upper end surface of the rotary worktable 12 can accurately position and firmly fix the large flange camshaft. During the processing, the cylinder 172 can drive the clamping plate 173 to telescopic movement on one side of one group of limiting plates 171, so as to adjust according to the shape and size of the camshaft, and fix the camshaft against the surface of the other group of limiting plates 171.

[0029] As a preferred embodiment, the first-stage bevel gear shaft 4 is meshed and connected with the second-stage bevel gear shaft 5, and the second-stage bevel gear shaft 5 is meshed and connected with the third-stage bevel gear shaft 6. When the first-stage bevel gear shaft 4 rotates with the output end of the first motor 3, the second-stage bevel gear shaft 5 is linked with the third-stage bevel gear shaft 6 and drives the transmission shaft 61 to realize rotational motion; further, by reasonably designing the tooth ratio of the bevel gears at each level, the torque can be accurately amplified or reduced. In the process of machining large flange camshafts, different machining processes have different requirements for torque. When the camshaft is blank cut or rough milled, a larger torque is required to overcome the larger cutting resistance of the material. Through the transmission of multi-stage bevel gears, the torque output by the first motor 3 can be amplified according to an appropriate proportion to ensure that the rotary worktable 12 can drive the camshaft weighing several tons to rotate with sufficient force.

[0030] As a preferred embodiment, the second motor 16 is used to drive the driving gear 15 to rotate around its axis. The two sets of driving gears 15 are respectively engaged with the gear ring 13. When the driving gear 15 rotates with the output end of the second motor 16, the driving gear 15 is driven to engage with the gear ring 13 to realize rotational motion; further, the two sets of second motors 16 respectively drive the driving gear 15 to rotate and engage with the gear ring 13, thereby driving the rotary worktable 12 to perform bilateral auxiliary rotation to avoid difficulty in rotation due to excessive tonnage.

[0031] As a preferred embodiment, four groups of clamping assemblies 17 are provided, and the four groups of clamping assemblies 17 are equidistantly spaced around the upper end surface of the rotary worktable 12, and the telescopic end of the cylinder 172 drives the clamping plate 173 to realize telescopic movement; further, the cylinder 172 drives the clamping plate 173 to realize telescopic movement, making the operation of the clamping assembly 17 faster and more efficient. When processing flange camshafts of different sizes, the position of the clamping plate 173 can be quickly adjusted to adapt to the size changes of the workpiece by simply controlling the telescopic end of the cylinder 172. The four groups of clamping assemblies 17 can all clamp the camshaft and can be accurately rotated to different processing stations through the rotation of the rotary worktable 12.

[0032] The working process of the present invention is as follows: first, the first motor 3 in the gear box 2 is started, and its output end drives the primary bevel gear shaft 4 to rotate. Since the primary bevel gear shaft 4 is meshed and connected with the secondary bevel gear shaft 5, the secondary bevel gear shaft 5 is linked therewith, and then the secondary bevel gear shaft 5 is meshed and transmitted with the tertiary bevel gear shaft 6, so that the tertiary bevel gear shaft 6 drives the transmission shaft 61 to rotate. By reasonably designing the tooth ratio of each level of bevel gear, the high-speed rotation power of the first motor 3 is converted into torque and speed suitable for the operation of the rotary worktable 12 to meet the torque requirements of different processing steps. For example, during rough processing, the torque can be amplified to overcome the large cutting resistance of the material, driving the camshaft weighing several tons to rotate, and the second motors 16 in the mounting seats 14 on both sides of the chassis 1 respectively drive the driving gear 15 to rotate around its axis, and the two sets of driving gears 15 in the mounting chamber 141 are meshed with the gear ring 13 on the outer ring of the rotary worktable 12 to achieve bilateral auxiliary rotation, thereby enhancing the rotary worktable 12 The driving torque is high, and during the rotation process, the precise control of the second motor 16 and the transmission cooperation of the driving gear 15 can assist the rotation of the rotary table 12, thereby accurately rotating to different processing positions to meet the multi-position processing requirements of the camshaft;

[0033] On the rotary table 12, four groups of clamping assemblies 17 arranged at equal distances play a role. The cylinder 172 on one side of one group of limit plates 171 drives the clamping plate 173 to extend and retract, and adjusts according to the shape and size of the camshaft, and fixes the camshaft against the surface of the other group of limit plates 171, so as to achieve precise positioning and firm fixation of the large flange camshaft. When processing camshafts of different sizes, the position of the clamping plate 173 can be quickly adjusted by controlling the telescopic end of the cylinder 172. The four groups of clamping assemblies 17 can all clamp the camshaft, and then can be accurately rotated to different processing stations through the rotation of the rotary table 12. The load of the rotary table 12 is evenly distributed on the several balls 10 through the rolling of the balls 10 in the slide groove 11 between the rotating base 7 and the rotating ring 9 and the limitation of the rotating base 7 by the fixed ring 8. The huge weight of the camshaft weighing several tons is evenly distributed to each group of balls 10, so as to bear the weight of the workpiece weighing several tons. The above is the working principle of the multi-station processing station for processing a large flange camshaft.

Claims

1. A multi-station processing station for processing a large flange camshaft, comprising a chassis (1), a rotating base (7), a rotating ring (9) and a rotating worktable (12), characterized in that: A gear box (2) is provided at the center of the chassis (1), a first motor (3) is installed at the center of the lower end surface of the gear box (2), a first-stage bevel gear shaft (4) is installed at the bottom of the inner cavity of the gear box (2), a second-stage bevel gear shaft (5) is installed on the side wall of the gear box (2), and a third-stage bevel gear shaft (6) is installed at the top of the inner cavity of the gear box (2), and one end of the third-stage bevel gear shaft (6) protruding from the gear box (2) is connected to a transmission shaft (61); The rotating base (7) is arranged at the upper end of the gear box (2), and a fixed ring (8) is installed on the outer surface of the rotating base (7). The rotating ring (9) is arranged at the upper end of the rotating base (7). A sliding groove (11) is provided on one side of the opposite surface of the rotating base (7) and the rotating ring (9). A rolling ball (10) is installed on the opposite surface between the two groups of the sliding grooves (11). The rotating workbench (12) is installed at the upper end of the rotating ring (9). The transmission shaft (61) is away from the three-stage bevel gear. One end of the shaft (6) is connected to the rotary table (12), the outer ring of the rotary table (12) is provided with a gear ring (13), both sides of the chassis (1) are provided with mounting seats (14), the opposite surfaces of the upper ends of the mounting seats (14) are provided with mounting chambers (141), the inner cavity of the mounting chamber (141) is provided with a driving gear (15), the lower end of the mounting chamber (141) is provided with a second motor (16), and the upper end surface of the rotary table (12) is provided with a clamping assembly (17).

2. The multi-station processing station for processing a large flange camshaft according to claim 1, characterized in that: The clamping assembly (17) includes a limiting plate (171), the limiting plate (171) being arranged at the edge of the upper end surface of the rotating worktable (12), and two groups of limiting plates (171) being provided, wherein a cylinder (172) is provided on one side of one group of limiting plates (171), and a clamping plate (173) is installed at the telescopic end of the cylinder (172).

3. The multi-station processing station for processing a large flange camshaft according to claim 1, characterized in that: The first-stage bevel gear shaft (4) is meshedly connected to the second-stage bevel gear shaft (5), and the second-stage bevel gear shaft (5) is meshedly connected to the third-stage bevel gear shaft (6).

4. The multi-station processing station for processing a large flange camshaft according to claim 3, characterized in that: When the first-stage bevel gear shaft (4) rotates along with the output end of the first motor (3), the second-stage bevel gear shaft (5) and the third-stage bevel gear shaft (6) are linked to drive the transmission shaft (61) to achieve rotational motion.

5. The multi-station processing station for processing a large flange camshaft according to claim 1, characterized in that: The second motor (16) is used to drive the driving gear (15) to rotate around its axis. The two groups of driving gears (15) are respectively engaged with the installation chamber (141). When the driving gear (15) rotates with the output end of the second motor (16), the driving gear (15) is driven to engage with the installation chamber (141) to achieve rotational motion.

6. The multi-station processing station for processing a large flange camshaft according to claim 2, characterized in that: The clamping assemblies (17) are provided in four groups, and the four groups of the clamping assemblies (17) are arranged at equal intervals around the upper end surface of the rotary worktable (12). The telescopic end of the cylinder (172) drives the clamping plate (173) to achieve telescopic movement.

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