Automatic Pressing Machine for Driving Axle Hub Assembly

Abstract

The present invention discloses an automatic press-fitting machine for a drive axle hub assembly, which belongs to the technical field of axle assembly. It solves the defects of high labor intensity, low efficiency, and difficult quality assurance existing in the traditional press-fitting of hub assemblies in the prior art. Its main structure includes a bed assembly, a positioning assembly, and a positioning press-fitting assembly, and the positioning assembly and the positioning press-fitting assembly are respectively installed on the bed assembly. The present invention is mainly used for the automatic press-fitting of hub assemblies on the axle assembly lines of drive axles of construction machinery loaders and heavy truck drive axles.

Description

Technical Field:

[0001] The present invention belongs to the technical field of axle assembly, and more particularly, relates to an automatic press for a drive axle hub assembly. Background Art:

[0002] During the assembly process of a drive axle, the press-fitting operation of the hub assembly is to press-fit the hub bearing onto the axle support shaft. The reliable and rapid press-fitting of the hub assembly is of great significance to the assembly quality and efficiency of the drive axle. In the traditional press-fitting method of the hub assembly, one is manual knocking press-fitting, which has a large labor intensity, low efficiency, and difficult quality assurance; the other is to use a hydraulic press to perform single-sided or double-sided press-fitting of the hub bearing. This press-fitting method still requires manual operation of the press, with low efficiency, and it is difficult to ensure the precise positioning of the hub and the axle housing, often resulting in problems of damaging the hub oil seal. Summary of the Invention:

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an automatic press for a drive axle hub assembly, which can achieve precise positioning of the hub assembly and automatic precise press-fitting of the hub bearing, while making the operation automated, with safe and reliable press-fitting, precise positioning, high efficiency, reducing the labor intensity of the operator, and realizing precise positioning and automatic press-fitting of the hub assembly.

[0004] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0005] An automatic press for a drive axle hub assembly includes a bed body assembly, a positioning assembly, and a positioning press-fitting assembly, and the positioning assembly and the positioning press-fitting assembly are respectively installed on the bed body assembly.

[0006] Preferably, the positioning press-fitting assembly includes a press-fitting device and a V-shaped positioning disc for the hub assembly. The press-fitting device includes a press-fitting base, a press-fitting oil cylinder, a positioning tip, and a bearing press-fitting disc assembly. An oil cylinder tip mounting seat is provided on the press-fitting base. The press-fitting oil cylinder is installed on one side of the oil cylinder tip mounting seat, and the other side of the oil cylinder tip mounting seat is connected to the positioning tip. The end of the press-fitting oil cylinder is connected to the bearing press-fitting disc assembly. The tip end of the positioning tip is connected to the bearing reverse mounting sleeve. The V-shaped positioning disc for the hub assembly is installed on the press-fitting base. A linear slide rail module and a lead screw support seat are provided at the lower end of the press-fitting base.

[0007] Preferably, the bearing press-fitting disc assembly includes an oil cylinder connection disc, a guiding optical axis, and a bearing press-fitting disc. One side of the oil cylinder connection disc is connected to the press-fitting oil cylinder, and the other side is connected to the guiding optical axis. The guiding optical axis is connected to the oil cylinder tip mounting seat and is installed with a clearance fit between the guiding optical axis and the oil cylinder tip mounting seat. The end of the guiding optical axis is connected to the bearing press-fitting disc.

[0008] Preferably, the bed assembly includes a bed, on which a servo motor reducer and a slide rail are provided, the output end of the servo motor reducer is connected to one end of a nut screw, the nut screw passes through a bearing module and is connected to a screw support seat, the bearing module is installed on the bed, the slide rail is slidably connected to a linear slide rail module, and a straightening limit assembly is provided on the side of the bed.

[0009] Preferably, the straightening and limiting assembly comprises a mounting seat, a cylinder and a limiting block, the mounting seat is connected to the bed, the upper end of the mounting seat is connected to the cylinder, and the output end of the cylinder is connected to the limiting block.

[0010] Preferably, the positioning assembly includes a mounting seat and a bridge housing positioning plate, the lower end of the mounting seat is connected to the bed, and the upper end is connected to the bridge housing positioning plate.

[0011] Preferably, the positioning press-fitting assembly is provided at two locations and is respectively installed on both sides of the positioning assembly.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention realizes accurate automatic positioning and press-fitting of the wheel hub assembly, realizes first-level accurate positioning of the workpiece through the positioning center, the V-shaped positioning plate of the wheel hub assembly and the positioning assembly, and second-level press-fitting of the oil cylinder, so that the wheel hub bearing press-fitting is reliable, and the current risk of damaging the wheel hub oil seal can be completely eliminated. The invention is easy to operate, has a high degree of automation, and has high assembly accuracy and consistency, which frees up manpower and improves production efficiency. Description of the drawings:

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a front view of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the positioning and pressing assembly in the present invention;

[0017] Figure 4 It is a structural schematic diagram of the bearing press-fit disc assembly in the present invention;

[0018] Figure 5 It is a structural schematic diagram of the bed assembly in the present invention;

[0019] Figure 6 It is a structural schematic diagram of the positioning limit assembly in the present invention;

[0020] Figure 7 It is a structural schematic diagram of the positioning assembly in the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the present invention in an installed and used state;

[0022] Figure 9 This is the front view of the installation and use state of the present invention.

[0023] 1. Bed assembly; 2. Positioning assembly; 3. Positioning and pressing assembly; 4. Axle housing assembly; 5. Wheel hub assembly; 6. Wheel hub bearing; 11. Bed; 12. Servo motor reducer; 13. Nut screw; 14. Coupling; 15. Bearing module; 16. Alignment and limit assembly; 17. Slide rail; 161. Mounting seat; 162. Cylinder; 163. Limit block; 21. Mounting seat; 22. Axle housing positioning disc; 31. Pressing base; 32. Cylinder tip mounting seat; 33. Pressing cylinder; 34. Positioning tip; 35. Bearing pressing disc assembly; 36. Bearing reverse mounting sleeve; 37. Wheel hub assembly V-shaped positioning disc; 38. Linear slide rail module; 39. Screw support seat; 351. Cylinder connection disc; 352. Guide optical axis; 353. Bearing pressing disc. Specific embodiments:

[0024] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0025] Embodiment 1:

[0026] As Figure 1 shown, an automatic press for driving axle wheel hub assembly includes a bed assembly 1, a positioning assembly 2 and a positioning and pressing assembly 3, and the positioning assembly 2 and the positioning and pressing assembly 3 are respectively installed on the bed assembly 1.

[0027] Embodiment 2:

[0028] As Figure 2-3 shown, an automatic press for driving axle wheel hub assembly, the positioning and pressing assembly 3 includes a pressing device and a wheel hub assembly V-shaped positioning disc 37, the pressing device includes a pressing base 31, a pressing cylinder 33, a positioning tip 34 and a bearing pressing disc assembly 35, an oil cylinder tip mounting seat 32 is provided on the pressing base 31, the pressing cylinder 33 is installed on one side of the oil cylinder tip mounting seat 32, the other side of the oil cylinder tip mounting seat 32 is connected to the positioning tip 34, the end of the pressing cylinder 33 is connected to the bearing pressing disc assembly 35, the tip end of the positioning tip 34 is connected to the bearing reverse mounting sleeve 36, the wheel hub assembly V-shaped positioning disc 37 is installed on the pressing base 31, and a linear slide rail module 38 and a screw support seat 39 are provided at the lower end of the pressing base 31. A wheel hub assembly 5 is installed on the wheel hub assembly V-shaped positioning disc 37.

[0029] As Figure 4As shown, the bearing press-fitting plate assembly 35 includes a cylinder connecting plate 351, a guide light shaft 352 and a bearing press-fitting plate 353. One side of the cylinder connecting plate 351 is connected to the press-fitting cylinder 33, and the other side is connected to the guide light shaft 352. The guide light shaft 352 is connected to the cylinder top mounting seat 32, and the guide light shaft 352 and the cylinder top mounting seat 32 are installed with a clearance fit. The end of the guide light shaft 352 is connected to the bearing press-fitting plate 353.

[0030] like Figure 5 As shown, the bed assembly 1 includes a bed 11, on which a servo motor reducer 12 and a slide rail 17 are provided. The output end of the servo motor reducer 12 is connected to one end of a nut screw 13 through a coupling 14. The nut screw 13 passes through a bearing module 15 and is connected to a screw support seat 39. The bearing module 15 is installed on the bed 11. The slide rail 17 is slidably connected to a linear slide rail module 38. A straightening limit assembly 16 is provided on the side of the bed 11. The linear slide rail module 38 can be used to realize the back and forth sliding of the positioning press assembly 3 on the bed 11, so as to facilitate the press-fitting of the hub assembly 5, the bridge housing assembly 4 and the hub bearing 6. The servo motor reducer 12 provides power to drive the nut screw 13 to reciprocate through the coupling 14. The nut screw 13 is connected to the screw support seat 39, which can drive the screw support seat 39 to reciprocate. Therefore, the screw support seat 39 drives the positioning press assembly 3 to reciprocate linearly through the linear slide module 38.

[0031] like Figure 6 As shown, the alignment limit assembly 16 includes a mounting seat 161, a cylinder 162 and a limit block 163, the mounting seat 161 is connected to the bed 11, the upper end of the mounting seat 161 is connected to the cylinder 162, and the output end of the cylinder 162 is connected to the limit block 163; by extending the cylinder rod of the cylinder 162 in the alignment limit assembly 16, the installed bridge housing assembly 4 is aligned.

[0032] like Figure 7 As shown, the positioning assembly 2 includes a mounting seat 21 and a bridge housing positioning plate 22 . The lower end of the mounting seat 21 is connected to the bed 11 , and the upper end is connected to the bridge housing positioning plate 22 .

[0033] The positioning and pressing assemblies 3 are provided at two locations and are respectively installed on both sides of the positioning assembly 2. Other parts are the same as those of the first embodiment.

[0034] like Figure 8-9 The figure shows a schematic diagram of the structure of installing the bridge housing assembly 4, the wheel hub assembly 5 and the wheel hub bearing 6. The basic method of use includes the following steps:

[0035] First step, place the axle housing assembly 4 on the axle housing positioning disc 22 of the positioning assembly 2, place the wheel hub assembly 5 on the V-shaped positioning disc 37 of the wheel hub assembly of the positioning and pressing assembly 3, and then place the wheel hub bearing 6 on the bearing reverse installation sleeve 36 of the positioning and pressing assembly 3;

[0036] Second step, the operator starts the operation switch. First, the alignment and limit assembly 16 in the present invention automatically aligns the axle housing assembly 4, and then the alignment and limit assembly 16 resets. Then, the positioning and pressing assembly 3 is automatically driven by the servo motor reducer 12 and is conveyed to the two positioning and pressing assemblies 3 together with the wheel hub assembly 5 and the wheel hub bearing 6 thereon. At the same time, it tightly positions the inner hole of the support shaft of the axle housing assembly 4. Finally, the pressing cylinder 33 on the positioning and pressing assembly 3 drives the bearing pressing disc assembly 35 to automatically press the wheel hub bearing 6 to the corresponding position of the support shaft of the axle housing assembly 4 and hold the pressure. After the pressure holding is completed, the two positioning and pressing assemblies 3 automatically reset, and the pressing cylinder 33 automatically resets; the entire automatic positioning and pressing process ends, and the operator hoists away the workpiece after pressing.

Claims

1. An automatic press-fitting machine for a drive axle hub assembly, comprising a bed assembly (1), a positioning assembly (2) and a positioning press-fitting assembly (3), wherein the positioning assembly (2) and the positioning press-fitting assembly (3) are respectively mounted on the bed assembly (1); characterized in that: The positioning press-fit assembly (3) comprises a press-fit device and a hub assembly V-shaped positioning disk (37), the press-fit device comprises a press-fit base (31), a press-fit oil cylinder (33), a positioning top (34) and a bearing press-fit disk assembly (35), the press-fit base (31) is provided with a cylinder top mounting seat (32), the press-fit oil cylinder (33) is installed on one side of the cylinder top mounting seat (32), the other side of the cylinder top mounting seat (32) is connected to the positioning top (34), the end of the press-fit oil cylinder (33) is connected to the bearing press-fit disk assembly (35), the top end of the positioning top (34) is connected to the bearing flip-up sleeve (36), the hub assembly V-shaped positioning disk (37) is installed on the press-fit base (31), and the lower end of the press-fit base (31) is provided with a linear slide rail module (38) and a screw support seat (39); The bearing press-fitting plate assembly (35) comprises a cylinder connecting plate (351), a guide optical axis (352) and a bearing press-fitting plate (353); one side of the cylinder connecting plate (351) is connected to the press-fitting cylinder (33), and the other side is connected to the guide optical axis (352); the guide optical axis (352) is connected to the cylinder top mounting seat (32), and the guide optical axis (352) and the cylinder top mounting seat (32) are installed with clearance fit; the end of the guide optical axis (352) is connected to the bearing press-fitting plate (353); The bed assembly (1) comprises a bed (11), a servo motor reducer (12) and a slide rail (17) are provided on the bed (11), the output end of the servo motor reducer (12) is connected to one end of a nut screw (13), the nut screw (13) passes through a bearing module (15) and is connected to a screw support seat (39), the bearing module (15) is installed on the bed (11), the slide rail (17) is slidably connected to a linear slide rail module (38), and a side of the bed (11) is provided with a straightening limit assembly (16); The straightening and limiting assembly (16) comprises a mounting seat (161), a cylinder (162) and a limiting block (163); the mounting seat (161) is connected to the bed body (11); the upper end of the mounting seat (161) is connected to the cylinder (162); and the output end of the cylinder (162) is connected to the limiting block (163); The method of use includes the following steps: The first step is to place the axle housing assembly (4) on the axle housing positioning plate (22) of the positioning assembly (2), place the wheel hub assembly (5) on the wheel hub assembly V-shaped positioning plate (37) of the positioning and pressing assembly (3), and then place the wheel hub bearing (6) on the bearing flip sleeve (36) of the positioning and pressing assembly (3); In the second step, the operator starts the operation switch. The alignment limit assembly (16) first automatically jacks the axle housing assembly (4) into position, and then the alignment limit assembly (16) resets. Then, the positioning and pressing assembly (3), driven automatically by the servo motor reducer (12), together with the hub assembly (5) and hub bearing (6) thereon, is conveyed to the two positioning and pressing assemblies (3) on both sides. At the same time, it tightly positions the inner hole of the support shaft of the axle housing assembly (4). Finally, the pressing cylinder (33) on the positioning and pressing assembly (3) drives the bearing pressing disc assembly (35) to automatically press the hub bearing (6) to the corresponding position of the support shaft of the axle housing assembly (4) and hold the pressure. After the pressure holding is completed, the two positioning and pressing assemblies (3) on both sides automatically reset, and the pressing cylinder (33) automatically resets; the entire automatic positioning and pressing process ends, and the operator hoists away the workpiece after pressing.

2. The automatic press-fitting machine for the driving axle hub assembly according to claim 1, wherein: The positioning assembly (2) includes a mounting base (21) and an axle housing positioning disc (22). The lower end of the mounting base (21) is connected to the bed body (11), and the upper end is connected to the axle housing positioning disc (22).

3. The automatic press-fitting machine for the driving axle hub assembly according to claim 2, wherein: There are two positioning and pressing assemblies (3), which are respectively installed on both sides of the positioning assembly (2).

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