Improved tubular column bearing press-fitting device

Abstract

The utility model relates to the technical field of automobile parts, and discloses an improved tubular column bearing press fitting device which comprises a pressing head fixedly arranged on a lifting head of a pressing machine and a tubular column positioning mechanism fixedly arranged on a working table of the pressing machine, the tubular column positioning mechanism comprises a pressure bearing table capable of moving front and back, and a positioning core column is fixed on the pressure bearing table; a tubular column workpiece is inserted and sleeved on the positioning core column; a bearing positioning shaft and a convex ring are formed on the pressure head, a damping ring is sleeved on the bearing positioning shaft, the damping ring is higher than the bearing positioning shaft, an inner ring of a bearing workpiece is inserted on the bearing positioning shaft in a sleeving manner, so that the bearing workpiece can be centrally positioned, and the inner ring of the bearing workpiece can be centrally positioned through friction force between the damping ring and the inner ring of the bearing workpiece. And the bearing workpiece can be prevented from falling off from the bearing positioning shaft. The bearing is mounted on the pressure head, so that the bearing can be conveniently mounted and positioned, the press-fitting efficiency of the tubular column bearing can be effectively improved, and meanwhile, the stressed part of the bearing is an outer ring during press-fitting through the convex ring, so that the bearing can be effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an improved column bearing press-fitting device. Background Technology

[0002] The steering column is a crucial component of the automotive steering system, housing bearings. Currently, bearings in steering columns are typically installed using a press-fit method. The press-fit process involves: first, positioning the steering column; then, placing the bearing at the corresponding bearing bore opening in the column; and finally, using a press to move the press head downwards and press the bearing into the bearing bore. This press-fit method has the following drawbacks: 1. It is difficult to place the bearing flat at the bearing bore opening, leading to relative misalignment during press-fitting. Additionally, the small size of the column bore opening limits the operating space for bearing placement, thus affecting work efficiency; 2. During bearing press-fitting, the press head acts on the inner ring of the bearing, while the resistance experienced by the bearing is on the outer ring. The forces acting on the inner and outer rings are exactly opposite, which can easily damage the bearing. Utility Model Content

[0003] The purpose of this utility model is to provide an improved column bearing press-fitting device. By mounting the bearing on the press head, the installation and positioning of the bearing can be facilitated, which can effectively improve the press-fitting efficiency of the column bearing. At the same time, by using the convex ring, the force-bearing part of the bearing during press-fitting is the outer ring, which can effectively protect the bearing.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An improved tube column bearing press fitting device includes a press head fixed on the lifting head of a press and a tube column positioning mechanism fixed on the worktable of the press. The tube column positioning mechanism includes a pressure plate that can move back and forth, and a positioning core column is fixed on the pressure plate. The tube column workpiece is inserted into the positioning core column.

[0006] The pressure head forming includes a bearing positioning shaft and a convex ring. A damping ring is sleeved on the bearing positioning shaft and is positioned higher than the bearing positioning shaft. The inner ring of the bearing workpiece is inserted into the bearing positioning shaft to center the bearing workpiece. The friction between the damping ring and the inner ring of the bearing workpiece can prevent the bearing workpiece from falling off the bearing positioning shaft.

[0007] The present invention is further configured such that: the positioning core includes two effective positioning parts arranged vertically, the outer diameter of the effective positioning part is fitted with the inner diameter of the corresponding part of the tube column with a clearance, and the outer diameter of the connecting section adjacent to the effective positioning part is smaller than the diameter of the effective positioning part, so as to facilitate the insertion of the tube column workpiece into the positioning core.

[0008] This invention is further configured such that: the bottom of the pressure platform is slidably connected to a support guide rail, the support guide rail is fixed to a base, and the base is fixed to the press's worktable; a push-pull block is fixed to the bottom of the pressure platform, the push-pull block is fixed to the end of the telescopic rod of the first telescopic cylinder, and the first telescopic cylinder is fixed to the base. The first telescopic cylinder pushes the push-pull block to move, which in turn moves the pressure sleeve, causing the pressure platform to move the positioning core column, thus facilitating the insertion and removal of the tube column. A positioning block is provided on one side of the positioning core column, and the positioning block is fixed to the end of the telescopic rod of the second telescopic cylinder. Both the first and second telescopic cylinders are electrically connected to a controller.

[0009] This utility model is further configured as follows: an obliquely arranged stepped hole is formed on the effective positioning part on the lower side; a detection head that mates with the stepped hole is sleeved inside the stepped hole, the outer end of the detection head is formed with a round head, one side of the round head protruding into the effective positioning part; the inner end of the detection head is connected to a spring support through a compression spring, and the spring support is fixed inside the stepped hole; a displacement sensor is fixed inside the spring support, the detection end of the displacement sensor abuts against the inner end of the detection head, and the displacement sensor is electrically connected to the controller. The displacement sensor can detect whether the tubular workpiece is inserted into place. If it is inserted into place, the displacement sensor transmits a corresponding signal to the controller, and the controller controls the first telescopic cylinder and the second telescopic cylinder to perform corresponding actions in a set sequence.

[0010] The present invention is further configured such that: the pressure head is formed with a convex ring, the size of which matches the size of the outer ring of the bearing workpiece; when pressing the bearing workpiece, the convex ring abuts against the outer ring of the bearing workpiece, and its pressure-bearing part is the outer ring of the bearing workpiece, thereby effectively protecting the bearing workpiece.

[0011] The present invention is further configured such that: a limiting block is provided on one side of the push-pull block, the limiting block is fixed on the base, and the limiting block can limit the backward movement position of the push-pull block, thereby ensuring that the positioning core is aligned with the pressure head and ensuring the smooth pressing of the bearing workpiece.

[0012] The outstanding effect of this utility model is:

[0013] Compared with existing technologies, mounting the bearing on the press head facilitates the installation and positioning of the bearing, effectively improving the press-fitting efficiency of the column bearing. At the same time, the convex ring ensures that the bearing is subjected to force on the outer ring during press-fitting, which can effectively protect the bearing.

[0014] By using displacement sensors, controllers, first telescopic cylinders, and second telescopic cylinders, the tubing can automatically move under the pressure head after installation, solving the problem of needing to manually control the telescopic cylinders to move, and further improving the pressing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A magnified view of a specific area (A);

[0017] Figure 3 for Figure 1 A magnified view of a portion of B.

[0018] Reference numerals: 1. Indenter; 11. Bearing positioning shaft; 12. Damping ring; 13. Convex ring;

[0019] 2. Pipe column positioning mechanism; 21. Pressure bearing platform; 22. Positioning core column; 23. Support guide rail; 24. Base; 25. Limiting block; 26. Push-pull block; 27. First telescopic cylinder; 28. Positioning block; 29. ​​Second telescopic cylinder;

[0020] 221. Effective positioning part; 222. Connecting section; 223. Stepped hole;

[0021] 31. Detection head; 32. Compression spring; 33. Spring support; 34. Displacement sensor;

[0022] 311. Round head;

[0023] 8. Tubing;

[0024] 9. Bearing components. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] The following is for reference Figures 1 to 3 The present invention will be described as follows:

[0027] An improved press-fitting device for tubular bearings, such as Figure 1 As shown, the device includes a pressure head 1 fixed to the lifting head of the press and a pipe column positioning mechanism 2 fixed to the worktable of the press. The pipe column positioning mechanism 2 includes a pressure bearing platform 21 that can move back and forth, and a positioning core column 22 is fixed on the pressure bearing platform 21. The positioning core column 22 includes two effective positioning parts 221 arranged vertically. The outer diameter of the effective positioning part 221 is clearance-fitted with the inner diameter of the corresponding part of the pipe column 8. The outer diameter of the connecting section 222 adjacent to the effective positioning part 221 is smaller than the diameter of the effective positioning part 221.

[0028] The bottom of the pressure platform 21 is slidably connected to the support guide rail 23, which is fixed to the base 24, which is fixed to the press's worktable. A push-pull block 26 is fixed to the bottom of the pressure platform 21, and this block is fixed to the end of the telescopic rod of the first telescopic cylinder 27, which is fixed to the base 24. A positioning block 28 is provided on one side of the positioning core column 22, and this block is fixed to the end of the telescopic rod of the second telescopic cylinder 29. A limiting block 25 is provided on one side of the push-pull block 26, and this limiting block 25 is fixed to the base 24. The first telescopic cylinder, the second telescopic cylinder, and the press are all controlled by a controller.

[0029] like Figure 2 As shown, the press head 1 in this embodiment is formed with a bearing positioning shaft 11 and a convex ring 13. A damping ring 12 is sleeved on the bearing positioning shaft 11, and the damping ring 12 is set higher than the bearing positioning shaft 11. The inner ring of the bearing workpiece 9 is inserted into the bearing positioning shaft 11 to center the bearing workpiece 9. The friction between the damping ring and the inner ring of the bearing workpiece can prevent the bearing workpiece from falling off the bearing positioning shaft. The size of the convex ring 13 matches the size of the outer ring of the bearing workpiece 9. When pressing the bearing workpiece, the convex ring abuts against the outer ring of the bearing workpiece, and its pressure-bearing part is the outer ring of the bearing workpiece, thereby effectively protecting the bearing workpiece.

[0030] like Figure 3 As shown, an obliquely arranged stepped hole 223 is formed on the effective positioning part 221 on the lower side; a detection head 31 that cooperates with it is sleeved in the stepped hole 223, and a round head 311 is formed on the outer end of the detection head 31, one side of the round head 311 extends into the effective positioning part 221; a spring support 33 is connected to the inner end of the detection head 31 through a compression spring 32, and the spring support 33 is fixed in the stepped hole 223; a displacement sensor 34 is fixed in the spring support 33, and the detection end of the displacement sensor 34 abuts against the inner end of the detection head 31.

[0031] Working principle: First, the bearing workpiece 9 to be press-fitted is inserted into the bearing positioning shaft. Through the damping effect of the damping ring 12 on the bearing positioning shaft, the bearing workpiece 9 can be prevented from falling off the bearing positioning shaft.

[0032] Second, the tubular column 8 is inserted from the upper end of the positioning core column 22. During the downward movement of the lower inner wall of the tubular column 8, it first contacts the round head 311. The round head is driven by pressure to retract the detection head into the stepped hole. The inward movement of the detection head causes a change in the detection end of the displacement sensor. The displacement sensor transmits the corresponding signal to the controller. The controller first controls the first telescopic cylinder to drive the push-pull block 26 to move backward. The push-pull block drives the pressure platform to move backward. When the push-pull block 26 contacts the limit block, the pressure platform moves backward into place. At this time, the positioning core column on the pressure platform is exactly below the pressure head 1. Then the controller controls the second telescopic cylinder to drive the positioning block to move. The positioning block presses against one side plane of the tubular column 8 to further restrict and position the tubular column 8.

[0033] Third, the press drives the press head to move downward, and the press head drives the bearing workpiece to move downward and insert the bearing workpiece into the upper bearing hole of the column 8. During the pressing process, the convex ring presses against the outer ring of the bearing workpiece, while the inner ring of the bearing workpiece is not subjected to force, thus protecting the bearing workpiece.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An improved tube column bearing press-fitting device, comprising a press head (1) fixedly mounted on the lifting head of a press and a tube column positioning mechanism (2) fixedly mounted on the worktable of the press, characterized in that: The tubular positioning mechanism (2) includes a pressure-bearing platform (21) that can move back and forth, and a positioning core column (22) is fixed on the pressure-bearing platform (21). The pressure head (1) is formed with a bearing positioning shaft (11), and a damping ring (12) is sleeved on the bearing positioning shaft (11). The damping ring (12) is set higher than the bearing positioning shaft (11).

2. The improved tubular bearing press-fitting device according to claim 1, characterized in that: The positioning core (22) includes two effective positioning parts (221) arranged vertically, with the outer diameter of the effective positioning part (221) and the inner diameter of the corresponding part of the tube (8) being fitted with a clearance.

3. The improved tubular bearing press-fitting device according to claim 1, characterized in that: The bottom of the pressure plate (21) is slidably connected to the support guide rail (23), the support guide rail (23) is fixed on the base (24), and the base (24) is fixed on the worktable of the press; a push-pull block (26) is fixed at the bottom of the pressure plate (21), and the push-pull block (26) is fixed at the end of the telescopic rod of the first telescopic cylinder (27).

4. The improved tubular bearing press-fitting device according to claim 3, characterized in that: A positioning block (28) is provided on one side of the positioning core column (22), and the positioning block (28) is fixed to the end of the telescopic rod of the second telescopic cylinder (29).

5. The improved tubular bearing press-fitting device according to claim 4, characterized in that: An obliquely arranged stepped hole (223) is formed on the effective positioning part (221) on the lower side; a detection head (31) that cooperates with it is sleeved in the stepped hole (223), and a round head (311) is formed on the outer end of the detection head (31), one side of the round head (311) extends into the effective positioning part (221); a spring support (33) is connected to the inner end of the detection head (31) through a compression spring (32), and the spring support (33) is fixed in the stepped hole (223); a displacement sensor (34) is fixed in the spring support (33), and the detection end of the displacement sensor (34) abuts against the inner end of the detection head (31).

6. The improved tubular bearing press-fitting device according to claim 1, characterized in that: The pressure head (1) is formed with a convex ring (13), the size of which matches the size of the outer ring of the bearing workpiece (9).

7. The improved tubular bearing press-fitting device according to claim 3, characterized in that: The push-pull block (26) has a limiting block (25) on one side, and the limiting block (25) is fixed on the base (24).

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