A multi-station press-fitting bearing press

Abstract

This invention discloses a multi-station press-fit bearing press-fitting machine, relating to the field of bearing press-fitting technology. The press-fitting machine includes a hydraulic pump station, a positioning mechanism, a hydraulic cylinder, a pressure relief mechanism, and a fixing mechanism. The positioning mechanism adjusts the position of the hydraulic cylinder, and then the fixing mechanism fixes the bearing to be installed. The hydraulic pump station is started, causing the hydraulic cylinder to press the bearing onto the workpiece. Simultaneously, a detection unit detects the movement speed of the hydraulic cylinder output end during the press-fitting process and monitors the hydraulic oil pressure, thereby enabling timely detection of abnormalities during the press-fitting process. The control system controls the pressure relief mechanism to operate, preventing bearing damage caused by abnormal press-fitting. During normal operation, the operator simultaneously fixes the bearing to be pressed at another fixed bearing station. After the previous bearing is pressed, it is moved to the press-fitting station, reducing the equipment time for the bearing to be pressed and thus improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of bearing press-fitting technology, specifically a multi-station press-fitting bearing press-fitting machine. Background Technology

[0002] In the moving joints of industrial robots or robots performing special operations, bearings are usually required to reduce friction, and bearing press-fitting machines are typically used to install bearings.

[0003] The bearing press-fitting machine uses a hydraulic pump station to drive a hydraulic cylinder, which generates a stable thrust. This thrust, combined with the tooling, allows the bearing to be pressed onto the shaft.

[0004] Existing bearing press-fitting machines use overflow valves to release pressure in case of press-fitting abnormalities, thus preventing bearing damage caused by excessive pressure. However, when press-fitting different bearings, the maximum load that the bearing can withstand varies due to differences in bearing size and the workpiece being pressed in, and therefore the required pressing force also varies. Thus, the overflow pressure of the overflow valve must be adjusted each time a different bearing is press-fitted. However, due to precision issues in adjustment, it is difficult to accurately adjust to the required pressure. This can easily lead to an inability to immediately release pressure when abnormalities occur during the press-fitting process, resulting in excessive pressing pressure, which in turn damages the bearing and affects its service life. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art where abnormalities occur during the pressing process, the machine cannot immediately release pressure, resulting in excessive pressing force, which can easily lead to bearing damage and affect service life. Therefore, a multi-station pressing bearing pressing machine is proposed.

[0006] To address the above problems, the present invention provides the following technical solution: A multi-station press-fit bearing press-fitting machine includes a hydraulic pump station and a pressure relief mechanism. A positioning mechanism is provided on one side of the hydraulic pump station, a hydraulic cylinder is provided on the positioning mechanism, a fixing mechanism is provided on one side of the positioning mechanism, the hydraulic pump station and the pressure relief mechanism are connected by pipelines, the pressure relief mechanism and the hydraulic cylinder are connected by pipelines, and an adjustment mechanism is provided on one side of the output end of the hydraulic cylinder. The pressure relief mechanism includes a sleeve and a connecting unit. The sleeve is equipped with a pressure relief block, and a pressure relief spring is provided on one side of the pressure relief block. The connecting unit is connected to the sleeve via a pipe. The pressure relief block has micro-holes; The connecting unit is connected to the hydraulic pump station pipeline, the sleeve is connected to the hydraulic pump station pipeline, the hydraulic cylinder is equipped with a detection unit, and the detection unit and the connecting unit are electrically connected.

[0007] The operator fixes multiple bearings to be press-fitted through multiple stations of the fixing mechanism. The position of the bearings is adjusted using the positioning mechanism to align them with the workpiece. The hydraulic pump station is activated, allowing hydraulic oil to flow through the pressure relief mechanism to the hydraulic cylinder. The lower side of the sleeve's internal space connects to both the hydraulic pump station and the hydraulic cylinder. The lower and upper sides of the sleeve's internal space are separated by a pressure relief block. The upper side of the sleeve is connected by a pipe and a connecting unit forming a switch. This connecting unit is connected to the hydraulic pump station's oil tank pipe. Normally, the connecting unit is closed. A micro-hole on the pressure relief block connects the lower and upper sides of the sleeve's internal space, ensuring equal pressure on both sides. This prevents the pressure relief mechanism from operating, only connecting the hydraulic pump station and the hydraulic cylinder, thus driving the hydraulic cylinder to move the bearing towards the workpiece. Simultaneously, the fixing mechanism... The fixing component moves until the bearing and workpiece come into contact. The adjusting mechanism on one side of the hydraulic cylinder output end automatically adjusts the bearing end face to be horizontal with the workpiece end face. Then the hydraulic cylinder presses the bearing into the workpiece, and the fixing mechanism automatically releases the bearing to allow it to be pressed in smoothly. During the pressing process, if the detection unit detects a significant decrease in the extension speed of the hydraulic cylinder output end or an abnormal increase in the pressure inside the sleeve, the bearing may be stuck. The detection unit transmits the detection signal to the control system, which controls the opening of the connecting unit to connect the sleeve to the oil tank. This allows the hydraulic oil on the upper side of the sleeve to flow back to the oil tank quickly, and the return speed is faster than the inflow speed through the micro-hole. This creates a pressure difference on both sides of the pressure relief block, allowing the hydraulic oil to overcome the elastic force of the pressure relief spring and push open the pressure relief block to release pressure and prevent excessive pressure from damaging the bearing.

[0008] Furthermore, the detection unit includes an electromagnetic coil; Several magnetic blocks are provided on the output end of the hydraulic cylinder, and these magnetic blocks are evenly distributed along the axis of the electromagnetic coil. A pressure sensor is provided on the sleeve.

[0009] An electromagnetic coil is installed in the positioning mechanism, and several magnetic blocks are arranged along the axis on the output end of the hydraulic cylinder. The axis of the electromagnetic coil coincides with the axis on the output end of the hydraulic cylinder. When the magnetic blocks pass through the electromagnetic coil, they cut the magnetic field to generate an electrical signal, thereby detecting the speed of the output end of the hydraulic cylinder. The length of each magnetic block is slightly shorter than the length of the electromagnetic coil, so that when the magnetic block passes through the electromagnetic coil, there is a gap between when the magnetic block completely slides into the electromagnetic coil and when it slides out of the electromagnetic coil. There is also a gap between each magnetic block, so that the next magnetic block begins to slide into the electromagnetic coil after the previous magnetic block has completely slid out, which makes the generated signal an intermittent and orderly signal. When the signal weakens significantly or stops, it proves that the pressing is stuck. The pressure sensor on the sleeve detects the hydraulic oil pressure in the sleeve, thereby detecting whether the hydraulic oil pressure is abnormal and thus determining whether the pressing is successful.

[0010] Furthermore, the connecting unit includes a connecting box, inside which a switch block is provided, and on one side of the switch block is an electric cylinder; The electric cylinder and the electromagnetic coil are connected by electrical signals.

[0011] The inlet of the connecting box is connected to the sleeve pipe, and the outlet of the connecting box is connected to the oil tank pipe. A sliding switch block is installed inside the connecting box to close the inlet and outlet of the connecting box. An electric cylinder is fixed outside the connecting box, and the output end of the electric cylinder is fixed to the switch block. When the detection unit detects an abnormality in the bearing pressing, it controls the electric cylinder to work, causing the switch block to slide, thereby allowing the sleeve to connect to the oil tank through the connecting box for pressure relief.

[0012] Furthermore, the positioning mechanism includes a frame, a mounting plate, and an adjusting screw. The frame is equipped with a mounting box, which is slidably connected to the mounting plate. The frame and the adjusting screw are rotatably connected. The mounting box and the adjusting screw are drive-connected. The frame is equipped with a power source, which is drive-connected to the adjusting screw. The mounting box contains a linear module. The electromagnetic coil is located on the mounting plate.

[0013] A box is mounted on the frame, and the box is slidably connected to the frame via limiting components, allowing it to move only vertically. An adjusting screw, rotatably connected to the frame, is driven by a nut and the box. A power source on the frame, a motor, drives the adjusting screw to rotate via a gear, thus causing the box to move vertically. A linear module is installed inside the box, and the two ends of a hydraulic cylinder are fixed to the moving end of the linear module and the mounting plate, respectively. This allows the linear module to drive the hydraulic cylinder to move horizontally, adjusting its position so that its output end aligns with the workpiece, thereby completing the positioning process.

[0014] Furthermore, the adjustment mechanism includes a pressure plate and a spring telescopic rod. The pressure plate is hinged to the output end of the hydraulic cylinder, and both ends of the spring telescopic rod are hinged to the output end of the hydraulic cylinder and the pressure plate, respectively.

[0015] The end face of the hydraulic cylinder output end and the pressure plate are fixed by a ball hinge, allowing the pressure plate to be finely adjusted in angle. When the bearing and the workpiece come into contact, if there is a coaxiality deviation between the bearing and the workpiece, the pressure plate can adaptively adjust the angle to avoid misalignment and damage to the bearing during the pressing process. By setting a spring telescopic rod, both ends of the spring telescopic rod are connected to the end face of the hydraulic cylinder output end and the pressure plate hinge, respectively, thereby supporting the pressure plate and preventing it from sagging under the action of gravity, thus avoiding affecting the pressing process.

[0016] Furthermore, the fixing mechanism includes several clamping units, each clamping unit has a connecting rod on one side, and the clamping units and the mounting plate are slidably connected.

[0017] By setting up multiple clamping units, each pair of clamping units distributed vertically forms a fixture for fixing the bearing. Adjacent fixtures are fixed by connecting rods, so that when the fixture for pressing the bearing moves to the pressing station, another fixture moves to the installation station, which makes it easier for workers to fix the bearing to be pressed. This forms multiple stations, saves installation time, and improves pressing efficiency.

[0018] Furthermore, each clamping unit includes a clamping block, a slider, and a positioning block. The slider and the positioning block are slidably connected. A sliding rod is provided on one side of the slider, and the sliding rod is slidably connected to the clamping block. The positioning block and the mounting plate are slidably connected.

[0019] The clamping block is connected to the sliding rod and the slider, and is slidably connected to the positioning block, allowing it to slide along the pressing direction. After the bearing and the workpiece come into contact, the hydraulic cylinder continues to work, causing the V-shaped slotted clamping block to release, ensuring that the bearing remains coaxial before being pressed into the workpiece.

[0020] Furthermore, a preload spring is provided on the sliding rod; The clamping block has an inclined surface.

[0021] By providing a pre-tightening spring on the outer sleeve of the sliding rod and an inclined surface on the clamping block, when the bearing is pressed into the workpiece, the slider slides to the limit position at the end of the positioning block, and the bearing continues to be pressed into the workpiece, thereby causing the bearing to push open the clamping block along the inclined surface, thus automatically releasing the bearing. This eliminates the need for workers to manually release the clamp after pressing, improving work efficiency.

[0022] Furthermore, the mounting plate is provided with a sliding groove, a retraction spring is provided in the sliding groove, and a limit block is provided on one side of the retraction spring; One end of the limiting block is spherical, and the limiting block and the positioning block abut against each other.

[0023] By setting a retraction spring in the sliding groove of the mounting plate, and installing a limit block on one side of the retraction spring, when the operator pushes the positioning block to move to the limit block, they can feel the resistance, thus determining that the fixture has moved to the pressing station and is positioned. When it is necessary to remove the fixture, the operator pushes the positioning block with force, so that the spherical end of the limit block is subjected to force, thereby overcoming the elastic force of the spring and sliding into the sliding groove.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a pressure relief mechanism, the pressure relief mechanism does not work under normal circumstances during the bearing press-fitting process. When abnormal situations such as jamming occur during bearing press-fitting, the pressure relief mechanism is activated by the control system to immediately relieve pressure and avoid excessive pressure that could damage the bearing.

[0025] 2. Through the detection unit, magnetic blocks are evenly distributed along the axis of the electromagnetic coil. The magnetic blocks work with the electromagnetic coil to detect the speed of the hydraulic cylinder output end, and the pressure sensor detects the pressure of the hydraulic oil. This monitors the pressing speed and the internal hydraulic oil pressure, thereby detecting whether any abnormalities occur during the pressing process and controlling the pressure relief mechanism to work, reducing bearing damage caused by the machine's untimely response to abnormal pressing.

[0026] 3. By setting up multiple fixed bearing stations through a fixed mechanism, once the bearing press-fitting is completed, the next bearing can be moved to the press-fitting station immediately, reducing downtime and improving work efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 This is a schematic diagram of the pressure relief mechanism of the present invention; Figure 4 yes Figure 3 A magnified view of part B; Figure 5 This is a schematic diagram of the detection unit of the present invention; Figure 6 yes Figure 5 A magnified view of a portion of C; Figure 7 yes Figure 5 A magnified view of a portion of the image; Figure 8 This is a schematic diagram of the fixing mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the limiting block of the present invention.

[0028] In the diagram: 1. Hydraulic pump station; 2. Positioning mechanism; 21. Frame; 22. Mounting box; 23. Mounting plate; 231. Sliding groove; 24. Adjusting screw; 25. Power source; 26. Linear module; 3. Hydraulic cylinder; 4. Pressure relief mechanism; 41. Sleeve; 42. Pressure relief block; 421. Micro-hole; 43. Pressure relief spring; 44. Connecting unit; 441. Connecting box; 442. Switch block; 443. Electric cylinder; 45. Detection unit; 451. Electromagnetic coil; 452. Magnetic block; 453. Pressure sensor; 5. Fixing mechanism; 51. Clamping unit; 511. Clamping block; 5111. Inclined surface; 512. Slider; 513. Positioning block; 514. Sliding rod; 515. Preload spring; 52. Connecting rod; 53. Contraction spring; 54. Limiting block; 6. Adjusting mechanism; 61. Pressure plate; 62. Spring telescopic rod. Detailed Implementation

[0029] The embodiments of the present invention will now be further described in conjunction with the accompanying drawings and examples.

[0030] Example: Figures 1-5 As shown, the present invention provides a technical solution: a multi-station press-fit bearing press-fitting machine. The press-fitting machine includes a hydraulic pump station 1 and a pressure relief mechanism 4. A positioning mechanism 2 is provided on one side of the hydraulic pump station 1. A hydraulic cylinder 3 is provided on the positioning mechanism 2. A fixing mechanism 5 is provided on one side of the positioning mechanism 2. The hydraulic pump station 1 and the pressure relief mechanism 4 are connected by pipes. The pressure relief mechanism 4 and the hydraulic cylinder 3 are connected by pipes. An adjustment mechanism 6 is provided on one side of the output end of the hydraulic cylinder 3. The pressure relief mechanism 4 includes a sleeve 41 and a connecting unit 44. The sleeve 41 is provided with a pressure relief block 42, and a pressure relief spring 43 is provided on one side of the pressure relief block 42. The connecting unit 44 and the sleeve 41 are connected by a pipe. The pressure relief block 42 is provided with micro-holes 421; The connecting unit 44 is connected to the hydraulic pump station 1 via a pipeline, the sleeve 41 is connected to the hydraulic pump station 1 via a pipeline, the hydraulic cylinder 3 is equipped with a detection unit 45, and the detection unit 45 is electrically connected to the connecting unit 44.

[0031] The operator fixes multiple bearings to be press-fitted through multiple stations of the fixing mechanism 5. The position of the bearings is adjusted by the positioning mechanism 2 to align them with the workpiece. The hydraulic pump station 1 is activated, allowing hydraulic oil to flow through the pressure relief mechanism 4 to the hydraulic cylinder 3. The lower side of the internal space of the sleeve 41 connects the hydraulic pump station 1 and the hydraulic cylinder 3. The lower and upper sides of the internal space of the sleeve 41 are separated by a pressure relief block 42. The upper side of the sleeve 41 is connected to a switch formed by a pipe and a connecting unit 44. The connecting unit 44 is connected to the oil tank pipe of the hydraulic pump station 1. Under normal circumstances, the connecting unit 44 is closed. A micro-hole 421 on the pressure relief block 42 connects the lower and upper sides of the internal space of the sleeve 41, making the pressure on both sides equal. This prevents the pressure relief mechanism 4 from working, only connecting the hydraulic pump station 1 and the hydraulic cylinder 3, thus driving the hydraulic cylinder 3 to push the bearing towards the workpiece while simultaneously fixing it. The fixing component of mechanism 5 moves until the bearing and the workpiece come into contact. The adjusting mechanism 6 on the output end of hydraulic cylinder 3 automatically adjusts the bearing end face to be level with the workpiece end face. Then, hydraulic cylinder 3 presses the bearing into the workpiece, and the fixing mechanism 5 automatically releases the bearing to allow it to be pressed in smoothly. During the pressing process, if the detection unit 45 detects that the extension speed of the output end of hydraulic cylinder 3 has decreased significantly or the pressure inside the sleeve 41 has increased abnormally, the bearing may be stuck. The detection unit 45 transmits the detection signal to the control system, and the control system controls the opening of the connecting unit 44 to connect the sleeve 41 to the oil tank. This allows the hydraulic oil on the upper side of the sleeve 41 to flow back to the oil tank quickly, and the return speed is faster than the inflow speed of the micro-hole 421. This creates a pressure difference on both sides of the pressure relief block 42, which allows the hydraulic oil to overcome the elastic force of the pressure relief spring 43 and push open the pressure relief block 42 to release pressure and prevent excessive pressure from damaging the bearing.

[0032] like Figures 4-6 As shown, the detection unit 45 includes an electromagnetic coil 451; The hydraulic cylinder 3 has several magnetic blocks 452 on its output end, which are evenly distributed along the axis of the electromagnetic coil 451. The sleeve 41 is equipped with a pressure sensor 453.

[0033] An electromagnetic coil 451 is set in the positioning mechanism 2, and several magnetic blocks 452 are arranged along the axis on the output end of the hydraulic cylinder 3. The axis of the electromagnetic coil 451 coincides with the axis on the output end of the hydraulic cylinder 3. When the magnetic blocks 452 pass through the electromagnetic coil 451, they cut the magnetic field to generate an electrical signal, thereby detecting the speed of the output end of the hydraulic cylinder 3. The length of each magnetic block 452 is slightly shorter than the length of the electromagnetic coil 451, so that when the magnetic block 452 passes through the electromagnetic coil 451, there is a gap between when the magnetic block 452 completely slides into the electromagnetic coil 451 and when it slides out of the electromagnetic coil 451. There is also a gap between each magnetic block 452, so that the next magnetic block 452 begins to slide into the electromagnetic coil 451 after a short interval after the previous magnetic block 452 has completely slid out. This makes the generated signal an intermittent and orderly signal. When the signal weakens significantly or stops, it proves that the pressing is stuck. The pressure sensor 453 on the sleeve 41 detects the hydraulic oil pressure in the sleeve 41, thereby detecting whether the hydraulic oil pressure is abnormal and judging whether the pressing is successful.

[0034] like Figure 2 and Figure 4 As shown, the connecting unit 44 includes a connecting box 441, a switch block 442 is provided inside the connecting box 441, and an electric cylinder 443 is provided on one side of the switch block 442. The electric cylinder 443 and the electromagnetic coil 451 are electrically connected.

[0035] The inlet of the connecting box 441 is connected to the sleeve 41 via a pipe, and the outlet of the connecting box 441 is connected to the oil tank via a pipe. A sliding switch block 442 is installed inside the connecting box 441 to close the inlet and outlet of the connecting box 441. An electric cylinder 443 is fixed outside the connecting box 441, and the output end of the electric cylinder 443 is fixed to the switch block 442. When the detection unit 45 detects an abnormality in the bearing pressing, it controls the electric cylinder 443 to work, causing the switch block 442 to slide, thereby allowing the sleeve 41 to connect to the oil tank through the connecting box 441 for pressure relief.

[0036] like Figure 1 and Figure 3 As shown, the positioning mechanism 2 includes a frame 21, a mounting plate 23, and an adjusting screw 24. The frame 21 is provided with a mounting box 22, which is slidably connected to the mounting plate 23. The frame 21 and the adjusting screw 24 are rotatably connected. The mounting box 22 and the adjusting screw 24 are connected by a transmission. The frame 21 is provided with a power source 25, which is connected by a transmission to the adjusting screw 24. The mounting box 22 is provided with a linear module 26. The electromagnetic coil 451 is located on the mounting plate 23.

[0037] By mounting a box 22 on the frame 21, the box 22 is slidably connected to the frame 21 via a limiting member, allowing it to move only vertically. An adjusting screw 24, which is rotatably connected to the frame 21, is driven by a nut and the box 22. A power source 25 on the frame 21, which is a motor, drives the adjusting screw 24 to rotate via a gear, thus causing the box 22 to move vertically. A linear module 26 is installed inside the box 22. The two ends of the hydraulic cylinder 3 are fixed to the moving end of the linear module 26 and the mounting plate 23, respectively, allowing the linear module 26 to drive the hydraulic cylinder 3 to move horizontally, thereby adjusting the position of the hydraulic cylinder 3 and aligning its output end with the workpiece, thus completing the positioning.

[0038] like Figure 5 As shown, the adjustment mechanism 6 includes a pressure plate 61 and a spring telescopic rod 62. The pressure plate 61 is hinged to the output end of the hydraulic cylinder 3, and the two ends of the spring telescopic rod 62 are hinged to the output end of the hydraulic cylinder 3 and the pressure plate 61, respectively.

[0039] The end face of the output end of the hydraulic cylinder 3 and the pressure plate 61 are fixed by a ball hinge, allowing the pressure plate 61 to be finely adjusted in angle. When the bearing and the workpiece come into contact, if there is a coaxiality deviation between the bearing and the workpiece, the pressure plate 61 can adaptively adjust the angle to avoid misalignment and damage to the bearing during the pressing process. By setting a spring telescopic rod 62, both ends of the spring telescopic rod 62 are respectively connected to the end face of the output end of the hydraulic cylinder 3 and the pressure plate 61 by hinges, thereby supporting the pressure plate 61 and preventing it from sagging under the action of gravity, thus avoiding its impact on the pressing process.

[0040] like Figure 7 and Figure 8 As shown, the fixing mechanism 5 includes several clamping units 51, each clamping unit 51 has a connecting rod 52 on one side, and the clamping units 51 are slidably connected to the mounting plate 23.

[0041] By setting up multiple clamping units 51, each pair of clamping units 51 distributed vertically forms a fixture for fixing the bearing. The adjacent fixtures are fixed by the connecting rod 52, so that when the fixture for pressing the bearing is moved to the pressing station, another fixture moves to the installation station. This makes it easier for workers to fix the bearing to be pressed, thus forming multiple stations, saving installation time and improving pressing efficiency.

[0042] like Figure 7 As shown, each clamping unit 51 includes a clamping block 511, a slider 512 and a positioning block 513. The slider 512 and the positioning block 513 are slidably connected. A sliding rod 514 is provided on one side of the slider 512. The sliding rod 514 is slidably connected to the clamping block 511. The positioning block 513 and the mounting plate 23 are slidably connected.

[0043] The clamping block 511 is connected to the slider 512 via the sliding rod 514, and is slidably connected to the positioning block 513 via the slider 512, allowing it to slide along the pressing direction. After the bearing and the workpiece come into contact, the hydraulic cylinder 3 continues to work, causing the V-shaped slotted clamping block 511 to release, ensuring that the bearing remains coaxial before being pressed into the workpiece.

[0044] like Figure 7 As shown, a preload spring 515 is provided on the sliding rod 514; The clamping block 511 has an inclined surface 5111.

[0045] By providing a pre-tensioning spring 515 around the sliding rod 514 and an inclined surface 5111 on the clamping block 511, when the bearing is pressed into the workpiece, the slider 512 slides to the limit position at the end of the positioning block 513, and the bearing continues to be pressed into the workpiece, thereby causing the bearing to push open the clamping block 511 along the inclined surface 5111, thus automatically releasing the bearing. This eliminates the need for workers to manually release the clamp after pressing, improving work efficiency.

[0046] like Figure 9 As shown, the mounting plate 23 is provided with a sliding groove 231, a retraction spring 53 is provided in the sliding groove 231, and a limit block 54 is provided on one side of the retraction spring 53; One end of the limiting block 54 is spherical, and the limiting block 54 and the positioning block 513 abut against each other.

[0047] By setting a retraction spring 53 in the sliding groove 231 of the mounting plate 23, and installing a limit block 54 on one side of the retraction spring 53, when the operator pushes the positioning block 513 to move to the limit block 54, the operator can feel the resistance, thereby determining that the fixture has moved to the pressing station and achieving positioning. When it is necessary to remove the fixture, the operator pushes the positioning block 513 with force, so that the spherical end of the limit block 54 is subjected to force, thereby overcoming the elastic force of the spring and sliding into the sliding groove 231.

[0048] Working principle of the invention: The motor drives the adjusting screw 24 via gears, causing the mounting box 22 to move vertically, thus adjusting its height. The linear module 26 drives the hydraulic cylinder 3 horizontally, moving it to the pressing position for positioning. The operator adjusts the clamping block 511 to fix the bearing and pushes it to move. The limit block 54 positions the bearing to be pressed, moving it to the pressing station. The hydraulic pump station 1 is started, causing the hydraulic cylinder 3 to press the bearing. The slider 512 slides to the limit position during the pressing process. Then, the bearing pushes open the clamping block 511 along the inclined surface 5111, automatically releasing the bearing. Simultaneously, the hydraulic cylinder 3... Several magnetic blocks 452 on the output end move with it and pass through the electromagnetic coil 451 one by one at a certain speed. The electrical signal generated by the electromagnetic coil 451 is simultaneously detected by the pressure sensor 453 to detect the pressure inside the sleeve 41, thereby detecting whether there is any abnormality in the pressing process. When the pressure value or electrical signal is abnormal, the control system drives the electric cylinder 443 to work, causing the switch block 442 to move, thereby connecting the sleeve 41 to the oil tank through the connecting box 441, which in turn creates a pressure difference on both sides of the pressure relief block 42. This allows the hydraulic oil to overcome the elastic force of the pressure relief spring 43 and push open the pressure relief block 42 to release pressure, thus preventing excessive pressure from damaging the bearing when there is an abnormality in the pressing process.

[0049] The above description is merely a preferred embodiment of the present invention. Any modifications and / or equivalent substitutions and / or improvements made within the scope of the technical solutions claimed in the claims of this application should be included within the protection scope of the present invention. The protection scope of this application is determined by the technical solutions in the claims and their equivalents, and is not limited by the specific description in the specification.

Claims

1. A multi-station press-fit bearing press-fitting machine, characterized in that: The press machine includes a hydraulic pump station (1) and a pressure relief mechanism (4). The hydraulic pump station (1) is provided with a positioning mechanism (2) on one side. The positioning mechanism (2) is provided with a hydraulic cylinder (3). The positioning mechanism (2) is provided with a fixing mechanism (5) on one side. The hydraulic pump station (1) and the pressure relief mechanism (4) are connected by pipes. The pressure relief mechanism (4) and the hydraulic cylinder (3) are connected by pipes. The hydraulic cylinder (3) is provided with an adjustment mechanism (6) on one side of its output end. The pressure relief mechanism (4) includes a sleeve (41) and a connecting unit (44). The sleeve (41) is provided with a pressure relief block (42). A pressure relief spring (43) is provided on one side of the pressure relief block (42). The connecting unit (44) and the sleeve (41) are connected by a pipe. The pressure relief block (42) is provided with micro-holes (421); The connecting unit (44) is connected to the hydraulic pump station (1) by a pipeline, the sleeve (41) is connected to the hydraulic pump station (1) by a pipeline, the hydraulic cylinder (3) is provided with a detection unit (45), and the detection unit (45) is electrically connected to the connecting unit (44).

2. The multi-station press-fit bearing press-fitting machine according to claim 1, characterized in that: The detection unit (45) includes an electromagnetic coil (451); The hydraulic cylinder (3) has several magnetic blocks (452) on its output end. The magnetic blocks (452) are evenly distributed along the axis of the electromagnetic coil (451). The sleeve (41) is equipped with a pressure sensor (453).

3. The multi-station press-fit bearing press-fitting machine according to claim 2, characterized in that: The communication unit (44) includes a communication box (441), a switch block (442) is provided inside the communication box (441), and an electric cylinder (443) is provided on one side of the switch block (442). The electric cylinder (443) and the electromagnetic coil (451) are electrically connected.

4. The multi-station press-fit bearing press-fitting machine according to claim 3, characterized in that: The positioning mechanism (2) includes a frame (21), a mounting plate (23), and an adjusting screw (24). The frame (21) is provided with a mounting box (22). The mounting box (22) and the mounting plate (23) are slidably connected. The frame (21) and the adjusting screw (24) are rotatably connected. The mounting box (22) and the adjusting screw (24) are connected in a transmission manner. The frame (21) is provided with a power source (25). The power source (25) and the adjusting screw (24) are connected in a transmission manner. The mounting box (22) is provided with a linear module (26). The electromagnetic coil (451) is located on the mounting plate (23).

5. A multi-station press-fit bearing press-fitting machine according to claim 4, characterized in that: The adjustment mechanism (6) includes a pressure plate (61) and a spring telescopic rod (62). The pressure plate (61) is hinged to the output end of the hydraulic cylinder (3), and the two ends of the spring telescopic rod (62) are hinged to the output end of the hydraulic cylinder (3) and the pressure plate (61) respectively.

6. A multi-station press-fit bearing press-fitting machine according to claim 5, characterized in that: The fixing mechanism (5) includes several clamping units (51), each clamping unit (51) has a connecting rod (52) on one side, and the clamping units (51) and the mounting plate (23) are slidably connected.

7. A multi-station press-fit bearing press-fitting machine according to claim 6, characterized in that: Each of the clamping units (51) includes a clamping block (511), a slider (512) and a positioning block (513), the slider (512) and the positioning block (513) are slidably connected, and a sliding rod (514) is provided on one side of the slider (512), the sliding rod (514) and the clamping block (511) are slidably connected; The positioning block (513) and the mounting plate (23) are slidably connected.

8. A multi-station press-fit bearing press-fitting machine according to claim 7, characterized in that: The sliding rod (514) is provided with a preload spring (515); The clamping block (511) is provided with an inclined surface (5111).

9. A multi-station press-fit bearing press-fitting machine according to claim 8, characterized in that: The mounting plate (23) is provided with a sliding groove (231), and a retraction spring (53) is provided in the sliding groove (231). A limiting block (54) is provided on one side of the retraction spring (53). One end of the limiting block (54) is spherical, and the limiting block (54) and the positioning block (513) abut against each other.

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