Speed reducer bearing press-fitting equipment

Abstract

The invention discloses press-fitting equipment for a speed reducer bearing. The press-fitting equipment comprises a base and a steel frame. The pressing mechanism comprises a tool pressing head assembly which is arranged along the steel frame in a sliding mode, and the tool pressing head assembly comprises at least three pressing heads which are vertically and downwards arranged; the base mechanism comprises a tool platform and a jacking assembly, the tool platform and the tool pressing head assembly are arranged in a spaced mode in the vertical direction, and mounting holes are formed in the tool platform; the jacking assembly comprises a first driving part and a lifting tool, the first driving part drives the lifting tool to move in the vertical direction, and the movement path of the lifting tool can upwards pass through the mounting hole. In the press-fitting process, the tool pressing head assembly drives the press-fitting head to move downwards to apply vertically-downward acting force to a bearing and a workpiece, the jacking assembly can apply vertically-upward acting force to the workpiece and the bearing, and therefore stable positioning of the workpiece can be achieved; and in addition, the deformation risk of the bearing when the bearing is stressed on one side can be reduced in an axial two-side force application mode, and the bearing press-fitting effect is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a gear reducer bearing press-fitting device. Background Technology

[0002] The press-fitting of the outer ring of an automotive reducer bearing is a crucial process to ensure a precise fit between the bearing and the housing. Its assembly quality directly affects the bearing's load-bearing capacity and service life. In the automotive parts assembly field, traditional processes typically employ servo press-fitting systems. High-precision servo presses, coupled with force-displacement sensors, monitor the press-fitting force and displacement curves in real time to ensure proper press-fitting and adequate interference fit. However, existing servo press equipment is expensive and highly specialized. Taking the main reducer of a new energy vehicle as an example, the press-fitting of the outer ring of the bearing in the two bearing holes requires multiple manual adjustments of the workpiece position, which is cumbersome and inefficient. Furthermore, when existing press-fitting equipment applies pressure to the outer ring of the bearing, the outer ring may undergo inward deformation due to only being subjected to axial downward force. This can lead to assembly failure or even successful assembly, posing potential safety hazards in subsequent vehicle use. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a gear reducer bearing press-fitting device to improve bearing press-fitting efficiency and reduce the risk of press-fitting failure.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A gear reducer bearing press-fitting device, comprising:

[0006] The base and the steel frame mounted on the base;

[0007] The pressing mechanism includes a tooling pressing head assembly that is slidably disposed along the steel frame, the tooling pressing head assembly including at least three pressing heads disposed vertically downwards;

[0008] A base mechanism is disposed on the base. The base mechanism includes a tooling platform and a lifting assembly. The tooling platform is arranged vertically at intervals from the tooling pressure head assembly and is used to place workpieces. Mounting holes are provided on the tooling platform. The lifting assembly includes a first driving part and a lifting fixture. The first driving part drives the lifting fixture to move vertically, and the movement path of the lifting fixture can pass upward through the mounting holes.

[0009] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the lifting fixture includes an outer ring support column and an inner ring support column disposed at the top. The inner ring support column can match the inner ring of the ball bearing, and the inner ring support column is floatingly assembled with the outer ring support column in the vertical direction by a support spring.

[0010] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the first drive unit is a servo motor, which is horizontally arranged and drives the lifting fixture in the vertical direction through a coupling and a worm gear assembly.

[0011] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the pressing mechanism includes a servo press cross slide that is layered with the tooling press head assembly. The servo press cross slide includes a slide base that is fixedly disposed with the steel frame. A press head is disposed on the slide base. The press head is slidably disposed based on the slide base and can be aligned vertically with each of the pressing heads. The press head is driven by a servo press to push the pressing head downward in the vertical direction.

[0012] Preferably, in the above-mentioned reducer bearing press-fitting equipment, a first guide rail is provided on the slide base, a first support platform is slidably provided on the first guide rail, a second guide rail is provided on the first support platform, and a second support platform is slidably provided on the second guide rail; the first guide rail is perpendicular to the second guide rail, and the press head is provided on the second support platform.

[0013] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the tooling press head assembly includes a support platform, a balancing cylinder, and a servo electric cylinder; the support platform is provided with a guide slider with an opening and is sleeved on the outside of the column of the steel frame; the balancing cylinder balances the weight of the support platform and can lock the support platform; the servo electric cylinder drives the support platform to move axially along the column of the steel frame.

[0014] Preferably, in the above-mentioned reducer bearing press-fitting equipment, a third guide rail is provided on the support platform, a third support platform is slidably provided on the third guide rail, a fourth guide rail is provided on the third support platform, and a fourth support platform is slidably provided on the fourth guide rail; the third guide rail is perpendicular to the fourth guide rail, and the pressing head is provided on the fourth support platform.

[0015] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the press head includes a guide block, a pressure rod, and a pressure cap. The guide block is fixedly mounted on the fourth support platform and has a hole. The pressure rod slides through the guide block and is fixedly connected at one end to the pressure cap. The pressure cap is used to bear pressure. The other end of the pressure rod is fixedly connected to a pressure head for fixing the bearing outer ring to be assembled.

[0016] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the pressure head includes an inner pressure ring and an outer pressure ring that are floated in the vertical direction by a pressure spring. The outer ring of the bearing to be assembled is snapped into the inner pressure ring by a ball spring and receives the vertical pressure applied by the outer pressure ring.

[0017] Preferably, in the above-mentioned reducer bearing press-fitting equipment, the tooling press head assembly further includes a third drive unit and a support plate disposed on one side of the guide slider. The support plate is adapted to the shape of the outer wall of the steel frame column on the side facing the column of the steel frame. The third drive unit can drive the support plate to move toward the column of the steel frame and fit against the column of the steel frame.

[0018] As can be seen from the above technical solution, the reducer bearing press-fitting equipment provided in this disclosure, by setting a sliding tooling press head assembly with multiple press heads, cooperates with the tooling platform and the lifting assembly to press-fit the bearing outer ring of the workpiece. The multiple press heads can meet the press-fitting requirements of bearing outer rings at different positions or of different sizes on the workpiece, thereby improving the bearing press-fitting efficiency. The lifting tooling can lift the workpiece upward after it is placed on the tooling platform. During the bearing press-fitting process, the tooling press head assembly based on the sliding steel frame can drive the press head to move downward and apply a vertical downward force to the bearing and the workpiece. The lifting assembly can apply a vertical upward force to the workpiece and the bearing. This not only achieves stable positioning of the workpiece, but also reduces the risk of deformation of the bearing when subjected to force on one side by applying force on both sides of the axial direction, thereby improving the bearing press-fitting effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a gearbox bearing press-fitting device according to an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 Side view;

[0022] Figure 3 This is a schematic diagram of the base mechanism;

[0023] Figure 4 This is a schematic diagram of the lifting assembly.

[0024] Figure 5 for Figure 4 Cross-sectional structural diagram of the lifting tooling;

[0025] Figure 6 This is a schematic diagram of the cross slide of a servo press;

[0026] Figure 7This is a structural schematic diagram of the tooling pressure head assembly;

[0027] Figure 8 for Figure 7 A top-down view;

[0028] Figure 9 This is a schematic diagram of the pressing head structure;

[0029] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure.

[0030] in:

[0031] 10 - Base; 20 - Steel frame; 210 - Limiting ring;

[0032] 30-Pressure pressing mechanism; 310-Tooling pressure head assembly; 3110-Pressure pressing head; 31110-Guide block; 31120-Pressure rod; 31130-Pressure cap; 31140-Pressure head; 31150-Spring pull pin; 31160-Pressure spring; 31170-Inner pressure ring; 31180-Outer pressure ring; 3120-Support platform; 31210-Guide slider; 3130-Balance cylinder; 3140-Servo electric cylinder; 3150-Third guide rail; 316 0-Third support platform; 3170-Fourth guide rail; 3180-Fourth support platform; 3190-Second drive unit; 31910-Connecting block; 320-Servo press cross slide; 3210-Slide base; 3220-Press head; 3230-First guide rail; 3240-First support platform; 3250-Second guide rail; 3260-Second support platform; 3270-In-situ sensor; 330-Third drive unit; 340-Support plate; 350-Infrared sensor;

[0033] 40-Base mechanism; 410-Tooling platform; 4110-Mounting hole; 420-Lifting assembly; 4210-First drive unit; 42110-Coupling; 42120-Worm gear assembly; 4220-Lifting fixture; 42210-Outer ring support column; 42220-Inner ring support column; 42230-Support spring. Detailed Implementation

[0034] The core of this application is to disclose a gearbox bearing press-fitting device to improve bearing press-fitting efficiency and reduce the risk of press-fitting failure.

[0035] To enable those skilled in the art to better understand the present application, embodiments of the present application will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the structures represented in the following embodiments are not limited to those necessary for the solution of the invention described in the claims.

[0036] like Figures 1-10 As shown in the embodiments of this disclosure, the reducer bearing press-fitting equipment includes a support structure consisting of a base 10 and a steel frame 20. The base 10 refers to the basic frame that bears the overall weight of the equipment and can be made of cast iron or welded steel structure to provide stable support for the equipment. The steel frame 20 refers to the metal frame structure that is vertically installed on the base 10, and is usually composed of columns and beams to support the moving parts of the pressing mechanism 30.

[0037] The pressing mechanism 30 includes a tooling pressing head assembly 310, which is specifically a movable assembly unit that integrates multiple pressing heads 3110. It is slidably connected to the steel frame 20 so that its position can be adjusted in the vertical direction, thereby driving the pressing heads 3110 to adjust their position in the vertical direction.

[0038] The pressing head 3110 is an actuator that mates with the bearing to be pressed and directly applies pressing force. It should be noted that at least three pressing heads 3110 are provided, and preferably five, depending on common requirements. This layout of at least three pressing heads 3110 can cover multiple pressing stations. When multiple pressing holes are required on the workpiece, it allows the workpiece to remain fixed after positioning without frequent adjustments. Furthermore, the dimensions of the pressing head 3110 can be configured with different structures according to common bearing requirements, thereby improving the versatility of the reducer bearing pressing equipment for pressing bearings of different sizes.

[0039] The base mechanism 40 is disposed on the base 10, spaced apart from the tooling pressure head assembly 310. Specifically, the base mechanism 40 includes a tooling platform 410 and a lifting assembly 420. The tooling platform 410 is used to place the workpiece, so that the workpiece has a stable mounting plane and can withstand the pressure applied by the tooling pressure head assembly 310 above. At the same time, the tooling platform 410 has a vertically penetrating mounting hole 4110. The lifting assembly 420 includes a first drive unit 4210 and a lifting fixture 4220. The first drive unit 4210 can use a servo motor in conjunction with a worm gear transmission mechanism to achieve precise lifting control of the lifting fixture 4220. The movement path of the lifting fixture 4220 allows it to move upward and pass through the mounting hole 4110 to extend from the tooling platform 410 and interact with the workpiece.

[0040] It should be noted that the lifting assembly 420 can be extended from the tooling platform 410. During the bearing press-fitting process, after the workpiece is placed on the tooling platform 410, the tooling pressure head assembly 310, which is slidably set on the steel frame 20, moves, driving the pressing head 3110 to perform the bearing press-fitting work on the workpiece. While the pressing head 3110 applies downward pressure, the lifting tooling 4220 can lift the workpiece upward. The pressing head 3110 applies a vertical downward force to the bearing and the workpiece, while the lifting assembly 420 applies a vertical upward force to the workpiece and the bearing. This not only achieves stable positioning of the workpiece, but also reduces the risk of deformation of the bearing due to unilateral axial force by applying force on both sides of the axial direction, thereby improving the bearing press-fitting effect.

[0041] Compared with existing technologies, traditional equipment relies on a single pressing head and a fixed station. This solution, through the structural setting of multiple pressing heads 3110, works in conjunction with an adjustable lifting mechanism to achieve cooperation with multiple pressing holes on the workpiece. At the same time, by adding a vertical upward lifting force, the uniformity of the bearing's stress during the pressing process is improved, thereby reducing the risk of deformation and damage during the pressing process.

[0042] To further optimize the above technical solution, in some embodiments of this disclosure, the lifting fixture 4220 includes an outer ring support column 42210 and an inner ring support column 42220 disposed at the top. The outer ring support column 42210 can directly apply a lifting force, and its diameter is slightly smaller than the inner diameter of the outer ring of the bearing so that it can contact the outer ring of the bearing to provide stable support. The inner ring support column 42220 can match the inner ring of the ball bearing. It can be implemented by using a tapered column with an adjustable diameter, and the surface can be provided with anti-slip texture to enhance the friction with the inner ring, thus forming a mating structure with the inner ring of the bearing. Based on this, when the workpiece is placed on the tooling platform 410, the holes for press-fitting can be aligned with the mounting holes 4110. The bearing to be press-fitted can be mounted on the inner ring support column 42220. After the workpiece is placed on the tooling platform 410, the tooling pressure head assembly 310 presses and limits the workpiece from above, applying downward pressure. Meanwhile, the inner ring support column 42220, carrying the bearing to be press-fitted, presses the bearing from below. Similarly, the bearing can be subjected to axial forces in both positive and negative directions, and also has the advantage of good retention of the press-fitting shape.

[0043] It should be noted that, based on the structure of the reducer bearing press-fitting equipment provided in this embodiment, the axial force of the bearing to be press-fitted can be applied to both sides for different workpieces. Furthermore, for workpieces with different structural requirements, either top-down or bottom-up press-fitting methods can be selected. For workpieces with higher flatness on the side opposite the press-fitting hole, the press-fitting hole is facing upwards to be pressed by the pressing head 3110, while the side with higher flatness contacts the tooling platform 410, thus obtaining a stable support base at the bottom. For workpieces with higher flatness on the side where the press-fitting hole is located, the press-fitting hole is facing downwards and aligned with the mounting hole 4110 on the tooling platform 410. The top is pressed and locked by the pressing head 3110, while the bottom can be press-fitted by lifting the tooling 4220. In other words, the bottom of the tooling meets the press-fitting requirements and also meets the positioning flatness requirements to contact and cooperate with the tooling platform 410, improving the flexibility of use of the reducer bearing press-fitting equipment provided in this embodiment.

[0044] Furthermore, the inner ring support column 42220 is vertically floatingly assembled with the outer ring support column 42210 via a support spring 42230. Specifically, the support spring 42230 is embedded inside the inner ring support column 42220, with its two ends abutting against both the inner ring support column 42220 and the outer ring support column 42210. The support spring 42230 is a mechanical element providing elastic support; it can be a helical spring or a disc spring, and its stiffness can be selected according to the pressure range required for bearing press-fitting. The support spring 42230 creates a non-rigid connection between the inner ring support column 42220 and the outer ring support column 42210, allowing relative displacement in the vertical direction. When the lifting fixture 4220 drives the bearing and workpiece to press together via the inner ring support column 42220, the inner ring support column 42220 can automatically adjust its position through floating when the bearing shifts, eliminating assembly interference caused by part machining errors, while ensuring that the inner and outer rings are subjected to balanced forces during the pressing process, avoiding the risk of part deformation caused by uneven forces during the pressing process.

[0045] Furthermore, in some embodiments of this disclosure, the first drive unit 4210 is a servo motor, capable of precisely controlling the rotation angle and speed. For ease of installation, the first drive unit 4210 can be horizontally positioned, and the drive direction can be reversed via a coupling 42110 and a worm gear assembly 42120, thereby achieving vertical drive of the lifting fixture 4220. It should be noted that the worm gear assembly 42120 refers to a transmission mechanism composed of a worm and a worm wheel, which can be implemented using a single-start worm and a copper alloy worm wheel. By converting horizontal rotational motion into vertical linear motion, a self-locking characteristic is formed to prevent the lifting fixture 4220 from accidentally falling.

[0046] It should also be noted that the lifting fixture 4220 can be installed and fixed on the flange connection surface through the hoist hole for quick replacement and fixture positioning.

[0047] It should be further noted that, in the reducer bearing press-fitting equipment provided in this embodiment, the pressing speed of the pressing head 3110 is preferably similar to or the same as the lifting speed of the lifting fixture 4220, so as to ensure the uniformity of force on both sides of the workpiece during the press-fitting process and reduce the risk of workpiece deformation.

[0048] Furthermore, in the reducer bearing press-fitting equipment provided in this embodiment, the pressing mechanism 30 includes a servo press cross slide 320, which is arranged in layers with the tooling press head assembly 310. The servo press cross slide 320 includes a slide base 3210 fixedly disposed with the steel frame 20. A press head 3220 is disposed on the slide base 3210. In order to achieve adjustment, the press head 3220 is slidably disposed based on the slide base 3210. At the same time, the sliding path of the press head 3220 gives it a position aligned with each pressing head 3110 in the vertical direction. Based on this, the press head 3220 can be driven by the servo press to move downward in the vertical direction, thereby pushing the pressing head 3110 to perform the pressing action. In the aforementioned structure, the servo press cross slide 320 is a drive platform with two-dimensional planar movement capabilities. Specifically, it can be achieved using a combination of orthogonally arranged linear guides and servo motors. The position of the press head 3220 is adjusted through independent movement in two vertical directions within the horizontal plane, causing the press head 3220 to align sequentially with the pressing heads 3110 at different positions. When multiple bearing outer rings need to be pressed, the servo press drives the press head 3220 to descend, transmitting pressure to the currently aligned pressing head 3110. After completing a single pressing action, the cross slide moves to the corresponding position of the next pressing head 3110 to continue operation. This allows a single servo press to cover the working area of ​​multiple pressing heads 3110, enabling continuous pressing without manual adjustment of the workpiece position. Furthermore, the separate design of the press head 3220 and the pressing head 3110 allows for the adaptation to different specifications of pressing head 3110 combinations, improving equipment utilization.

[0049] Based on the above embodiments, in a specific embodiment of this disclosure, a first guide rail 3230 is provided on the slide base 3210, and a first support platform 3240 is slidably provided on the first guide rail 3230. It should be noted that the first guide rail 3230 refers to a unidirectional linear guide structure extending in the horizontal direction, which can be implemented by ball linear guide rails, and is used to support the lateral sliding of the first support platform 3240. In order to achieve stable operation of the first support platform 3240, two or more first guide rails 3230 can be arranged in parallel and spaced apart.

[0050] The first support platform 3240 is also provided with a second guide rail 3250, and a second support platform 3260 is slidably mounted on the second guide rail 3250. The second guide rail 3250 and the first guide rail 3230 can adopt the same linear guide rail structure, and the second guide rail 3250 and the first guide rail 3230 are preferably arranged perpendicularly to realize the lateral sliding of the second support platform 3260 based on the first support platform 3240.

[0051] Based on this, the press head 3220 is set on the second support platform 3260. The first support platform 3240 and the second support platform 3260 serve as sliding platforms respectively. The vertical layout of the guide rails forms a planar moving mechanism, which enables the press head 3220 to be accurately positioned at any position in the two-dimensional plane.

[0052] The press head 3220, mounted on the second support platform 3260, is a component used to provide pressing force. It is rigidly fixed to the bottom of the second support platform 3260 via a flange or bolts to ensure the verticality of pressure transmission. With the vertical arrangement of the first guide rail 3230 and the second guide rail 3250, the press head 3220 can move independently or in combination in both the transverse and longitudinal directions, covering different pressing positions and precisely aligning with the corresponding pressing head 3110. Compared to conventional pressing equipment where the press head 3220 is fixed in a single position, requiring manual adjustment of the workpiece position or replacement of special tooling, resulting in low operating efficiency and poor compatibility, the press head 3220 provided in this embodiment can flexibly move to multiple workstations without manual intervention in workpiece positioning, significantly improving the automation level of the pressing process.

[0053] To further optimize the above technical solution, a position sensor 3270 is also installed on the second support platform 3260. The position sensor 3270 is a device used to detect the relative position of the press head 3220 and the workpiece. Specifically, it can be implemented using a photoelectric sensor or a laser sensor, determining whether the press head is within the preset working area by emitting and receiving light signals. The detection range of the position sensor 3270 covers the press head 3220 and its bottom, including the press head body and the surface of the workpiece to be pressed below it. The detection area can be expanded by adjusting the sensor's installation angle or adding a reflector to ensure that the contact position between the press head and the workpiece is within the effective monitoring range. When the press head moves to the target pressing position, the sensor receiver determines whether the press head is accurately in place based on the reflected signal. If the press head deviates from the preset position, a feedback signal is sent to the control system, pausing the pressing action and triggering a position calibration program. During the pressing process, the sensor continuously monitors the contact state between the press head and the workpiece, for example, by detecting changes in the distance between the bottom of the press head and the workpiece surface to determine whether the pressing action is being performed normally.

[0054] Furthermore, in the reducer bearing press-fitting equipment provided in this embodiment, the tooling press head assembly 310 includes a support platform 3120, a balance cylinder 3130, and a servo electric cylinder 3140. The support platform 3120 is a load-bearing component, which can be implemented using a welded steel plate frame combined with reinforcing ribs. The support platform 3120 is equipped with a perforated guide slider 31210 to be fitted onto the outside of the vertical column on the steel frame 20, and to achieve a sliding guide function with the column of the steel frame 20 through a gap.

[0055] Based on this, the servo electric cylinder 3140 is a linear motion mechanism used to drive the support platform 3120 to move along the column of the steel frame 20. Specifically, it can adopt a direct connection structure between a ball screw and a servo motor, and achieve closed-loop position control through encoder feedback. Meanwhile, the balancing cylinder 3130 refers to a pneumatic actuator used to counteract the weight of the support platform 3120. Specifically, it can adopt a double-acting cylinder in conjunction with a proportional valve to control the air pressure, and adjust the output force in real time to keep the support platform 3120 in a floating balance state. The support platform 3120 is axially slidably connected to the steel frame 20 column via the guide slider 31210. The output shaft of the servo electric cylinder 3140 is rigidly connected to the support platform 3120, driving it to move up and down along the column. The piston rod of the balance cylinder 3130 is connected to the support platform 3120. By adjusting the cylinder output force, the downward tendency caused by the platform's own weight can be counteracted. At the same time, during the pressing operation, the support platform 3120 can be rigidly fixed by locking the cylinder air pressure, which facilitates the stable adjustment of the support platform 3120 by the servo electric cylinder 3140.

[0056] Furthermore, in some embodiments of this disclosure, a third guide rail 3150 is provided on the support platform, and a third support platform 3160 is slidably provided on the third guide rail 3150. Similarly, the third guide rail 3150 refers to a linear guide structure extending in the horizontal direction, which can be implemented by using a metal rail with a groove in conjunction with a slider to support the horizontal movement of the third support platform 3160; while a fourth guide rail 3170 is provided on the third support platform 3160, and a fourth support platform 3180 is slidably provided on the fourth guide rail 3170. The fourth guide rail 3170 can be implemented by using a cross roller guide rail to support the movement of the fourth support platform 3180 in another horizontal direction. The third guide rail 3150 and the fourth guide rail 3170 are set vertically, and the pressing head 3110 is set on the fourth support platform 3180. The support platform 3120 serves as the basic load-bearing structure. Through the vertical cross layout of the third guide rail 3150 and the fourth guide rail 3170, the fourth support platform 3180 can move freely in the planar coordinate system, thereby driving the pressing head 3110 to adjust its working position. This allows the pressing head 3110 to be accurately aligned with the bearing mounting holes 4110 at different positions on the workpiece without the need to reposition the entire tooling pressing head assembly 310. This enables multiple pressing points on the same workpiece to operate continuously, significantly reducing the number of manual interventions and improving work efficiency.

[0057] It should be noted that in this embodiment, the movement of each support platform on each guide rail can be achieved by a servo motor.

[0058] Furthermore, it should be noted that a second drive unit 3190 is also provided on the fourth support platform 3180. The second drive unit 3190 is arranged one-to-one with the pressing head 3110, that is, the number is equal and they are arranged in a one-to-one transmission configuration. At the same time, the pressing head 3110 is connected and fixed to the second drive unit 3190 through the connecting block 31910. The second drive unit 3190 applies a driving force to the pressing head 3110 in the vertical direction to balance its own weight. It should be noted that the second drive unit 3190 refers to a power device capable of outputting linear driving force, which can be implemented by a servo motor or a cylinder, to counteract the influence of the pressing head 3110's own weight on the pressing process, ensuring that the pressing head 3110 only transmits the vertical pressure applied by the servo press, and avoiding pressure deviation or uneven force on the workpiece due to its own weight.

[0059] In some embodiments of this disclosure, the pressing head 3110 specifically includes a guide block 31110, a pressing rod 31120, and a pressing cap 31130. The guide block 31110 is the basic connecting structure for assembling the pressing head 3110. In conjunction with the aforementioned embodiments, the guide block 31110 is fixedly mounted on the fourth support platform 3180, allowing the pressing head 3110 to move with the fourth support platform 3180. The guide block 31110 has an opening, and the pressing rod 31120 passes through this opening to slide against the guide block 31110, thus being guided by the guide block 31110 and moving axially along the guide block 31110.

[0060] One end of the pressure rod 31120 is fixedly connected to the pressure cap 31130, which is usually the higher end in the vertical direction. The pressure cap 31130 and the pressure rod 31120 are fixedly connected by bolts, and the pressure cap 31130 is used to bear the pressure. The other end of the pressure rod 31120 is fixedly connected to the pressure head 31140, which is used to transmit the pressure. It can press the workpiece at the bottom or fix the outer ring of the bearing to be assembled, so as to drive the bearing to be assembled on the workpiece.

[0061] Furthermore, in some embodiments of this disclosure, the pressure head 31140 includes an inner pressure ring 31170 and an outer pressure ring 31180 that are floating vertically via a pressure spring 31160. The outer diameter of the inner pressure ring 31170 is smaller than that of the outer pressure ring 31180. The bearing outer ring to be assembled can be engaged with the inner pressure ring 31170 via a ball spring to achieve assembly on the pressure head 31140. Simultaneously, after contacting the workpiece, it can receive the vertical pressure applied by the outer pressure ring 31180 to achieve press-fit assembly at the target point.

[0062] In order to facilitate the inspection and maintenance of the pressure head 31140, in some embodiments of this disclosure, the pressure head 31140 and the pressure rod 31120 are assembled by a spring pull pin 31150. The spring pull pin 31150 is inserted from one side wall of the pressure head 31140 and enters the groove on the side wall of the pressure rod 31120, thereby locking the pressure head 31140 and realizing the quick-release and quick-replacement function of the pressure head 31140.

[0063] Furthermore, in some embodiments of this disclosure, the tooling pressure head assembly 310 also includes a third driving part 330 and a support plate 340 disposed on one side of the guide slider 31210. Specifically, the support plate 340 is adapted to the shape of the outer wall of the steel frame 20 on the side facing the column of the steel frame 20. Here, shape adaptation specifically means that the support plate 340 can fit against a part of the outer wall of the steel frame 20. The third drive unit 330 can drive the support plate 340 to move toward the column of the steel frame 20 and fit against the column of the steel frame 20. When the tooling pressure head assembly 310 slides into place along the axial direction of the column on the steel frame 20, the third drive unit 330 can drive the support plate 340 to move toward the column of the steel frame 20. The support plate 340 fits against the column and has a larger contact area, thereby reducing the risk of abnormal sliding of the tooling pressure head assembly 310. When it is necessary to move the tooling pressure head assembly 310 again, the third drive unit 330 can drive the support plate 340 away from the column of the steel frame 20, thereby unlocking and restoring the sliding ability of the tooling pressure head assembly 310.

[0064] It should be further explained that a limiting ring 210 can also be provided on the steel frame 20. Specifically, the limiting ring 210 is provided at the bottom of the tooling pressure head assembly 310 so that when the tooling pressure head assembly 310 slides into place along the column axis on the steel frame 20, the third driving part 330 drives the support plate 340 to move toward the column of the steel frame 20. Then, the tooling pressure head assembly 310 is locked by the abutting action between the support plate 340 and the limiting ring 210.

[0065] In addition, the tooling pressure head assembly 310 also includes an infrared sensor 350. The infrared sensor 350 detects the outer periphery of the pressure head 3110 to detect whether there is a workpiece with a bearing outer ring waiting to be pressed on the corresponding pressure head 3110, so as to avoid the situation of air pressure damaging the workpiece and the pressure head.

[0066] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may not be defined in the listed steps or units, but may include steps or units not listed.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gearbox bearing press-fitting device, characterized in that, include: The base and the steel frame mounted on the base; The pressing mechanism includes a tooling pressing head assembly that is slidably disposed along the steel frame, the tooling pressing head assembly including at least three pressing heads disposed vertically downwards; A base mechanism is disposed on the base. The base mechanism includes a tooling platform and a lifting assembly. The tooling platform is arranged vertically at intervals from the tooling pressure head assembly and is used to place workpieces. Mounting holes are provided on the tooling platform. The lifting assembly includes a first driving part and a lifting fixture. The first driving part drives the lifting fixture to move vertically, and the movement path of the lifting fixture can pass upward through the mounting holes.

2. The gearbox bearing press-fitting equipment as described in claim 1, characterized in that, The lifting fixture includes an outer ring support column and an inner ring support column disposed at the top. The inner ring support column can match the inner ring of the ball bearing. The inner ring support column is floatingly assembled with the outer ring support column in the vertical direction by a support spring.

3. The gearbox bearing press-fitting equipment as described in claim 1, characterized in that, The first drive unit is a servo motor, which is horizontally positioned and drives the lifting fixture in the vertical direction through a coupling and a worm gear assembly.

4. The gearbox bearing press-fitting equipment as described in claim 1, characterized in that, The pressing mechanism includes a servo press cross slide that is layered with the tooling press head assembly. The servo press cross slide includes a slide base that is fixedly mounted to the steel frame. A press head is mounted on the slide base. The press head is slidably mounted based on the slide base and can be aligned vertically with each pressing head. The press head is driven by a servo press to push the pressing head downward in the vertical direction.

5. The gearbox bearing press-fitting equipment as described in claim 4, characterized in that, The slide base is provided with a first guide rail, a first support platform is slidably mounted on the first guide rail, a second guide rail is provided on the first support platform, and a second support platform is slidably mounted on the second guide rail; the first guide rail and the second guide rail are arranged perpendicularly, and the press head is mounted on the second support platform.

6. The gearbox bearing press-fitting equipment as described in claim 1, characterized in that, The tooling pressure head assembly includes a support platform, a balancing cylinder, and a servo electric cylinder; the support platform is provided with a perforated guide slider and is sleeved on the outside of the steel frame column; the balancing cylinder balances the weight of the support platform and can lock the support platform; the servo electric cylinder drives the support platform to move axially along the steel frame column.

7. The gearbox bearing press-fitting equipment as described in claim 6, characterized in that, The support platform is provided with a third guide rail, a third support platform is slidably mounted on the third guide rail, a fourth guide rail is provided on the third support platform, and a fourth support platform is slidably mounted on the fourth guide rail; the third guide rail and the fourth guide rail are perpendicular, and the pressing head is mounted on the fourth support platform.

8. The gearbox bearing press-fitting equipment as described in claim 7, characterized in that, The pressing head includes a guide block, a pressure rod, and a pressure cap. The guide block is fixedly mounted on the fourth support platform and has a hole. The pressure rod slides through the guide block and is fixedly connected at one end to the pressure cap. The pressure cap is used to bear pressure. The other end of the pressure rod is fixedly connected to a pressure head for fixing the outer ring of the bearing to be assembled.

9. The gearbox bearing press-fitting equipment as described in claim 8, characterized in that, The pressure head includes an inner pressure ring and an outer pressure ring that are floated vertically by a pressure spring. The outer ring of the bearing to be assembled is snapped into the inner pressure ring by a ball spring and receives the vertical pressure applied by the outer pressure ring.

10. The gearbox bearing press-fitting equipment as described in claim 6, characterized in that, The tooling pressure head assembly also includes a third driving part and a support plate disposed on one side of the guide slider. The support plate is adapted to the shape of the outer wall of the steel frame column on the side facing the column. The third driving part can drive the support plate to move toward the column of the steel frame and fit against the column of the steel frame.

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