Rod head spherical surface lubricating groove machining device and machining method

Abstract

The invention discloses a rod head spherical surface lubricating groove machining device which comprises a machine box, a machine frame is installed on the machine box, a centering mechanism is fixed to one side of the machine box, a support is installed on the machine frame, a first lifting device is installed on the support, the output end of the first lifting device is connected with a lifting plate, and the bottom face of the lifting plate is rotationally connected with a transmission rod through a bearing. The transmission rod is concentric with the centering mechanism, a transmission sleeve is rotationally connected to the machine box, a spline of the transmission rod is connected into the transmission sleeve, a first driving mechanism for controlling the transmission sleeve to rotate is arranged on the machine box, the lower end of the transmission rod penetrates out of the transmission sleeve, the penetrating-out end of the transmission rod is fixedly connected with a box body, two sliding holes are formed in the bottom face of the box body, and extension rods are slidably connected into the two sliding holes. Mounting sleeves are fixedly connected to the opposite surfaces of the lower ends of the two extension rods, and milling cutters are mounted in the mounting sleeves. The inner wall and the outer wall of the rod head are slotted through the two milling cutters at the same time, multiple lubricating grooves can be formed in the inner wall and the outer wall of the rod head at a time, and the slotting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil cylinder processing, in particular to a rod head spherical surface lubricating groove processing device and method. BACKGROUND

[0002] The oil cylinder is a key execution component in the fields of engineering machinery, metallurgical equipment, etc. The piston rod head thereof is usually a spherical surface structure and is connected with other components to form a spherical hinge. In order to ensure the lubrication and long-term durability of the spherical hinge pair, one or more annular lubricating grooves are usually processed on the spherical surface of the rod head.

[0003] At present, for the processing of such a spherical surface lubricating groove, the following method is usually adopted: a profiling tool is used to process the lubricating groove by controlling the tool tip trajectory through numerical control programming. However, the outer wall of the rod head can only be processed, and the inner wall and the outer wall of the rod head cannot be processed at the same time, that is, multiple lubricating grooves cannot be processed on the inner wall and the outer wall of the rod head at the same time, resulting in low processing efficiency. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a rod head spherical surface lubricating groove processing device, which has a simple structure and can efficiently process multiple annular lubricating grooves on the inner wall and the outer wall of the oil cylinder rod head spherical surface at the same time.

[0005] To solve the above technical problems, the present application provides the following technical scheme:

[0006] A rod head spherical surface lubricating groove processing device comprises a machine box, a rack is installed on the upper part of the machine box, a centering mechanism is fixed on one side of the machine box, a support is installed on the rack, a first lifting device is installed on the support, the output end of the first lifting device is connected with a lifting plate, the bottom surface of the lifting plate is rotationally connected with a transmission rod through a bearing, the transmission rod is concentric with the centering mechanism, a transmission sleeve is rotationally connected to the machine box through a bearing, the transmission rod is splined to the transmission sleeve, a first driving mechanism for controlling the rotation of the transmission sleeve is arranged on the machine box, the lower end of the transmission rod is fixedly connected with a box body, the bottom surface of the box body is provided with two strip-shaped sliding holes, two downwardly extending extension rods are slidably connected in the two sliding holes, the opposite surfaces of the lower ends of the two extension rods are fixedly connected with a mounting sleeve, a milling cutter is mounted in the mounting sleeve, two groups of second driving mechanisms are arranged in the box body, the two extension rods are respectively drivingly connected to the two groups of second driving mechanisms, and the two extension rods can be independently moved by the two groups of second driving mechanisms.

[0007] Preferably, the centering mechanism is a pneumatic chuck, and a gas pump is provided as a matching part to provide power for the pneumatic chuck.

[0008] Preferably, the first lifting device is a first hydraulic cylinder, and the telescopic end of the first hydraulic cylinder is fixedly connected with the top of the lifting plate. The side of the frame away from the first lifting device is provided with a second lifting device, and the second lifting device is a second hydraulic cylinder. The telescopic end of the second hydraulic cylinder is connected with an upper pressing block. The frame is fixedly provided with a lower pressing block opposite to the upper pressing block. A V-shaped groove is arranged between the upper pressing block and the lower pressing block. The lower pressing block is located at one side of the pneumatic chuck. As a matching part, a hydraulic pump, hydraulic oil, an oil tank and the like are provided to provide power for the first hydraulic cylinder and the second hydraulic cylinder. The first hydraulic cylinder is controlled to extend, so as to drive the lifting plate to lift. The second hydraulic cylinder is controlled to extend, so as to drive the upper pressing block to descend and fold with the lower pressing block.

[0009] Preferably, the first driving mechanism comprises a first motor mounted on the frame, a first gear connected to the motor shaft of the first motor, and a second gear connected to the transmission sleeve. The first gear is engaged with the second gear. The first motor is controlled to work, and through the cooperation of the first gear and the second gear, the transmission sleeve can be driven to rotate.

[0010] Preferably, the second driving mechanism comprises a bearing seat fixed at both ends of the sliding hole, a lead screw rotatably connected to the two bearing seats, and a second motor mounted in the box body. The motor shaft of the second motor is in transmission connection with one end of the lead screw. The upper end of the extension rod is provided with a screw hole and is in threaded connection with the lead screw through the screw hole. The second motor is started to drive the lead screw to rotate. When the lead screw rotates, the extension rod slides in the sliding hole, so as to adjust the position of the milling cutter.

[0011] Preferably, one side of the frame is provided with a control box. The control box is provided with a PLC controller. The control box is provided with a display and an input device such as a keyboard. The first motor, the second motor, the first hydraulic cylinder, the second hydraulic cylinder and the pneumatic chuck are electrically connected with the PLC controller. The PLC controller is written with a control program. The display is used to display the input parameters and working conditions. The input device (keyboard) is used to input various working parameters. The PLC controller is used to control the working of each component.

[0012] A processing method of a club head spherical lubrication groove, using the processing device, comprising the following steps:

[0013] S1: placing the club head on the pneumatic chuck and clamping the lower part of the outer wall of the club head through the pneumatic chuck to center the club head. The club tail is placed in the V-shaped groove of the lower pressing block. The second hydraulic cylinder is controlled to extend to drive the upper pressing block to descend and press the club tail. The club head and the club tail are kept stable through the action of the pneumatic chuck, the upper pressing block and the lower pressing block.

[0014] S2: control the first hydraulic cylinder to extend, drive the transmission rod to move downward, the transmission rod drives the box body to move downward, one of the extension rods is inserted into the inner side of the rod head, the other extension rod is located at the outer side of the rod head, then control the first motor to work, drive the transmission sleeve to rotate, the transmission sleeve drives the transmission rod to rotate, the transmission rod drives the box body to rotate, thereby driving the two milling cutters to rotate together with the center line of the transmission rod, so as to adjust the positions of the two milling cutters, and make the two milling cutters close to the rod tail;

[0015] S3: control the two second motors to rotate forward, the second motor drives the screw rod to move, so that the extension rod slides in the sliding hole until the two milling cutters contact with the spherical surface of the rod head;

[0016] S4: control the first motor to rotate forward, drive the transmission sleeve to rotate, thereby driving the two milling cutters to rotate together with the center line of the transmission rod, and rotate to the other side of the rod tail, so as to draw out the lubricating grooves on the inner wall and the outer wall of the rod head;

[0017] S5: control the two second motors to rotate reversely, so that the two milling cutters are away from the rod head, then control the first hydraulic cylinder to extend, so that the milling cutters move downward by a distance, then control the second motor to rotate forward, so that the two milling cutters contact with the inner wall and the outer wall of the rod head again, then control the first motor to rotate reversely, so that the milling cutters rotate reversely and return to the initial position, thereby forming new lubricating grooves on the outer wall and the inner wall of the rod head; in sequence, a plurality of lubricating grooves can be drawn out on the inner wall and the outer wall of the rod head.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The rod head and the rod tail are fixed, the transmission sleeve is controlled to rotate by the first driving mechanism, the box body is driven to rotate, thereby driving the two milling cutters to rotate, the inner wall and the outer wall of the rod head are grooved simultaneously by the two milling cutters, and the lubricating grooves can be formed on the inner wall and the outer wall of the rod head at one time. The milling cutters are controlled to ascend and descend by the first lifting device, the horizontal plane where the cutting edges of the milling cutters are located is adjusted, and then the new lubricating grooves can be formed on the inner wall and the outer wall of the rod head according to the above method. The efficiency of grooving is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the present application;

[0021] Figure 2 is a sectional view of the box body;

[0022] Figure 3 is a schematic view of the present application when machining the rod head;

[0023] Figure 4 is an action exploded view of machining the rod head;

[0024] Figure 5 is a schematic view of the spherical surface lubricating groove of the rod head;

[0025] In the figure: 1 - machine box, 2 - rack, 3 - support, 4 - lifting plate, 5 - transmission rod, 6 - transmission sleeve, 7 - box body, 8 - extension rod, 9 - milling cutter, 10 - pneumatic chuck, 11 - first hydraulic cylinder, 12 - second hydraulic cylinder, 13 - upper pressing block, 14 - lower pressing block, 15 - first motor, 16 - first gear, 17 - second gear, 18 - bearing seat, 19 - screw rod, 20 - second motor, 21 control box, 22 - display, 22 - rod head, 23 - rod tail, 24 - lubricating groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment 1

[0028] Please refer to Figures 1-3 A rod head spherical lubricating groove processing device includes a machine box 1, a rack 2 is installed on the upper part of the machine box 1, a centering mechanism is fixed on one side of the machine box 1, the centering mechanism is a pneumatic chuck 10, as a matching, a gas pump needs to be provided to provide power for the pneumatic chuck. The rod head is fixed by the pneumatic chuck 10 and can be centered.

[0029] A support 3 is installed on the rack 2, a first lifting device is installed on the support 3, the first lifting device is a first hydraulic cylinder 11, the telescopic end of the first hydraulic cylinder 11 is fixedly connected with a lifting plate 4, the bottom surface of the lifting plate 4 is rotatably connected with a transmission rod 5 through a bearing, the transmission rod 5 is concentric with the pneumatic chuck 10, a transmission sleeve 6 is rotatably connected to the machine box 1 through a bearing, the transmission rod 5 is spline-connected in the transmission sleeve 6, the transmission sleeve 6 rotates to drive the transmission rod 5 to rotate, and in addition, the transmission rod 5 can slide up and down in the transmission sleeve 6.

[0030] A first driving mechanism for controlling the rotation of the transmission sleeve 6 is arranged on the machine box 1. The first driving mechanism includes a first motor 15 installed on the rack, a first gear 16 connected to the motor shaft of the first motor, a second gear 17 connected to the transmission sleeve, and the first gear 16 is engaged with the second gear 17. By controlling the operation of the first motor, the transmission sleeve can be driven to rotate through the cooperation of the first gear and the second gear, so that the transmission rod is driven to rotate.

[0031] The lower end of the transmission rod 5 passes through the transmission sleeve 6, and the protruding end is fixedly connected to the housing 7. The bottom surface of the housing 7 has two strip-shaped sliding holes, and each of the two sliding holes has a downwardly extending extension rod 8 slidably connected to it. The opposite surfaces of the lower ends of the two extension rods 8 are fixedly connected to the mounting sleeves, and the mounting sleeves are equipped with milling cutters 9. The milling cutters 9 can be splined into the mounting sleeves or installed in the mounting sleeves by positioning pins. The housing 7 has two sets of second drive mechanisms, and the two extension rods 8 are respectively driven to the two sets of second drive mechanisms. The two sets of second drive mechanisms can control the independent movement of the two extension rods 8. The second drive mechanism includes bearing seats 18 fixed to both ends of the sliding holes, a lead screw 19 rotatably connected to the two bearing seats, and a second motor 20 installed in the housing. The motor shaft of the second motor 20 is driven to one end of the lead screw 19. The upper end of the extension rod 8 has a screw hole, and it is threadedly connected to the lead screw 19 through the screw hole. Start the second motor to drive the lead screw to rotate. When the lead screw rotates, it causes the extension rod to slide in the sliding hole, thereby adjusting the position of the milling cutter.

[0032] A second lifting device, a second hydraulic cylinder 12, is located on the side of the frame 2 furthest from the first lifting device. The extension end of the second hydraulic cylinder 12 is connected to an upper pressure block 13. A lower pressure block 14, opposite to the upper pressure block, is fixed on the housing 1. A V-groove is provided between the upper pressure block 13 and the lower pressure block 14. The lower pressure block 14 is located on one side of the pneumatic chuck 10, and its straight line is located in the middle between two adjacent jaws of the pneumatic chuck, so that the rod tail can avoid the jaws. As an accessory, a hydraulic pump, hydraulic oil, and an oil tank are required to provide power to the first and second hydraulic cylinders. Controlling the extension of the first hydraulic cylinder can raise and lower the lifting plate, thereby adjusting the height of the milling cutter. Controlling the extension of the second hydraulic cylinder can lower the upper pressure block and bring it together with the lower pressure block, thereby fixing the rod tail.

[0033] A control box 21 is located on one side of the chassis 1. The control box 21 houses a PLC controller, a display 22, and an input device (keyboard). It also includes a power button and control buttons. The first motor, the second motor, the first hydraulic cylinder, the second hydraulic cylinder, and the pneumatic chuck are all electrically connected to the PLC controller. The PLC controller contains a control program. The display shows the input parameters and operating status, the input device (keyboard) is used to input various operating parameters, and the PLC controller controls the operation of each component.

[0034] Example 2

[0035] A method for machining a spherical lubrication groove on a club head, using the aforementioned machining device, such as... Figure 4 As shown, it includes the following steps:

[0036] S1: Place the rod head 22 on the pneumatic chuck 10 and clamp the lower part of the outer wall of the rod head through the pneumatic chuck 10 to center the rod head 22. In addition, place the rod tail 23 in the V-groove of the lower pressure block 14, control the extension of the second hydraulic cylinder 12 to drive the upper pressure block 13 to descend and press the rod tail 23.

[0037] S2: Control the extension of the first hydraulic cylinder 11, which drives the transmission rod 5 to move downward. The transmission rod 5 drives the box body 7 to move downward, so that one of the extension rods 8 is inserted into the inside of the rod head 22, and the other extension rod 8 is located on the outside of the rod head 22. Then control the first motor 15 to work, drive the transmission sleeve 6 to rotate, drive the transmission rod 5 to rotate, and drive the box body 7 to rotate, thereby driving the two milling cutters 9 to rotate together around the center line of the transmission rod 5 to adjust the position of the two milling cutters so that the two milling cutters are close to the rod tail.

[0038] S3: Control the two second motors 20 to rotate forward. The second motors 20 drive the lead screw 19 to move, so that the extension rod 8 slides in the sliding hole until the two milling cutters 9 contact the spherical surface of the rod head 22.

[0039] S4: Control the first motor 15 to rotate forward, drive the transmission sleeve 6 to rotate, thereby driving the two milling cutters 9 to rotate together around the center line of the transmission rod 5, and rotate to the other side of the rod tail, thereby scratching lubrication grooves on both the inner and outer walls of the rod head 22.

[0040] S5: Control the two second motors 20 to reverse, causing the two milling cutters 9 to leave the rod head 22. Then control the first hydraulic cylinder 11 to extend, causing the milling cutters 9 to move downwards a certain distance. Next, control the second motors 20 to rotate forward, causing the two milling cutters 9 to contact the inner and outer walls of the rod head 22 again. Then control the first motor 15 to rotate in the opposite direction, causing the milling cutters 9 to rotate in the opposite direction and return to their initial position, thereby forming new lubrication grooves on the outer and inner walls of the rod head 22. By repeating this process, multiple lubrication grooves can be drawn on the inner and outer walls of the rod head 22. Figure 5 ).

[0041] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for processing spherical lubrication grooves on rod heads, characterized in that, The system includes a chassis (1), a frame (2) mounted on the upper part of the chassis (1), a centering mechanism fixed on one side of the chassis (1), a bracket (3) mounted on the frame (2), a first lifting device mounted on the bracket (3), a lifting plate (4) connected to the output end of the first lifting device, a transmission rod (5) rotatably connected to the bottom surface of the lifting plate (4) via a bearing, the transmission rod (5) being concentric with the centering mechanism, a transmission sleeve (6) rotatably connected to the chassis (1) via a bearing, the transmission rod (5) being splinedly connected to the transmission sleeve (6), and a control transmission sleeve (6) provided on the chassis (1). The first drive mechanism for rotation has a transmission rod (5) whose lower end passes through a transmission sleeve (6) and is fixedly connected to a box (7). The bottom surface of the box (7) is provided with two strip-shaped sliding holes. Both sliding holes are slidably connected to downwardly extending extension rods (8). The opposite surfaces of the lower ends of the two extension rods (8) are fixedly connected to mounting sleeves. A milling cutter (9) is installed in the mounting sleeves. The box (7) is provided with two sets of second drive mechanisms. The two extension rods (8) are respectively driven and connected to the two sets of second drive mechanisms. The two sets of second drive mechanisms can control the independent movement of the two extension rods (8).

2. The rod head spherical lubrication groove processing device according to claim 1, characterized in that, The centering mechanism is a pneumatic chuck (10).

3. The rod head spherical lubrication groove processing device according to claim 2, characterized in that, The first lifting device is a first hydraulic cylinder (11), and the telescopic end of the first hydraulic cylinder (11) is fixedly connected to the top of the lifting plate (4).

4. The rod head spherical lubrication groove processing device according to claim 3, characterized in that, A second lifting device is provided on the side of the frame (2) away from the first lifting device. The second lifting device is a second hydraulic cylinder (12). The extension end of the second hydraulic cylinder (12) is connected to an upper pressure block (13). A lower pressure block (14) opposite to the upper pressure block is fixed on the housing (1). A V-groove is provided between the upper pressure block (13) and the lower pressure block (14). The lower pressure block (14) is located on one side of the pneumatic chuck (10).

5. The rod head spherical lubrication groove processing device according to claim 4, characterized in that, The first drive mechanism includes a first motor (15) mounted on a frame, a first gear (16) connected to the motor shaft of the first motor, and a second gear (17) connected to the transmission sleeve, wherein the first gear (16) meshes with the second gear (17).

6. The rod head spherical lubrication groove processing device according to claim 5, characterized in that, The second drive mechanism includes bearing seats (18) fixed at both ends of the sliding hole, a lead screw (19) rotatably connected to the two bearing seats, and a second motor (20) installed in the housing. The motor shaft of the second motor (20) is connected to one end of the lead screw (19) for transmission. The upper end of the extension rod (8) is provided with a screw hole and is threadedly connected to the lead screw (19) through the screw hole.

7. The rod head spherical lubrication groove processing device according to claim 6, characterized in that, A control box (21) is provided on one side of the chassis (1). A PLC controller is provided inside the control box (21). A display (22) and an input device are provided on the control box. The first motor, the second motor, the first hydraulic cylinder, the second hydraulic cylinder, and the pneumatic chuck are all electrically connected to the PLC controller.

8. A method for machining a spherical lubrication groove on a rod head, using the machining apparatus described in claim 7, characterized in that... Includes the following steps: S1: Place the rod head (22) on the pneumatic chuck (10) and clamp the lower part of the outer wall of the rod head through the pneumatic chuck (10) to center the rod head (22). In addition, place the rod tail (23) in the V-groove of the lower pressure block (14), control the extension of the second hydraulic cylinder (12) to drive the upper pressure block (13) to descend and press the rod tail (23) tightly. S2: Control the extension of the first hydraulic cylinder (11) to drive the transmission rod (5) to move downward. The transmission rod (5) drives the box (7) to move downward, so that one of the extension rods (8) is inserted into the inside of the rod head (22) and the other extension rod (8) is located on the outside of the rod head (22). Then control the first motor (15) to work, drive the transmission sleeve (6) to rotate, drive the transmission rod (5) to rotate, drive the box (7) to rotate, thereby driving the two milling cutters (9) to rotate together around the center line of the transmission rod (5) to adjust the position of the two milling cutters so that the two milling cutters are close to the end of the rod. S3: Control the two second motors (20) to rotate forward. The second motors (20) drive the lead screw (19) to move, so that the extension rod (8) slides in the sliding hole until the two milling cutters (9) contact the spherical surface of the rod head (22); S4: Control the first motor (15) to rotate forward, drive the transmission sleeve (6) to rotate, thereby driving the two milling cutters (9) to rotate together around the center line of the transmission rod (5) and rotate to the other side of the rod tail, thereby scratching lubrication grooves on the inner and outer walls of the rod head (22); S5: Control the two second motors (20) to reverse, so that the two milling cutters (9) leave the rod head (22), then control the first hydraulic cylinder (11) to extend, so that the milling cutters (9) move downward a certain distance, then control the second motor (20) to rotate forward, so that the two milling cutters (9) contact the inner and outer walls of the rod head (22) again, then control the first motor (15) to rotate in the opposite direction, so that the milling cutters (9) rotate in the opposite direction and return to the initial position, thereby forming new lubrication grooves on the outer and inner walls of the rod head (22); in this way, multiple lubrication grooves can be drawn on the inner and outer walls of the rod head (22).

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