Bolt press-fitting tool for sector gear shaft

Abstract

The invention discloses a fan-shaped gear shaft press-fitting bolt tool, and belongs to the field of automobile part machining. A fan-shaped gear shaft press-fitting bolt tool comprises a frame body and a hydraulic cylinder, the hydraulic cylinder is fixed to the top of the frame body, the fan-shaped gear shaft press-fitting bolt tool further comprises a mounting plate fixed to a base of the frame body, a gear shaft body is mounted on the mounting plate, and an adjusting bolt and a check ring are placed on the top of the gear shaft body. A clamping part for limiting the gear shaft body is arranged on the mounting plate; the press-fitting plate slides in the vertical direction of the frame body, the top of the press-fitting plate is fixed to the bottom of the telescopic end of the hydraulic cylinder, a press-fitting part is arranged at the bottom of the press-fitting plate, and the press-fitting part is used for accurately pressing the adjusting bolt and the check ring into the gear shaft body; through the arrangement of the V-shaped positioning clamp and the gear positioning block, effective positioning of the gear shaft body is achieved, it is ensured that the pressing cutter is aligned with the adjusting bolt and the check ring, the press-fitting precision is effectively improved, and the press-fitting quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a sector gear shaft press-fit bolt tool. Background Art

[0002] The sector gear shaft is mainly used in situations that require precise angle control and intermittent motion. It is a relatively important structure in automotive parts. It is specifically used in the steering operation of the car. The steering mechanism of the car converts the rotation of the steering wheel into the steering action of the wheel through the sector gear shaft. In the process of producing and processing the sector gear shaft, the adjustment bolts and retaining rings need to be pressed into the inside of the sector gear shaft body before subsequent installation and use. Therefore, in the production and processing of the sector gear shaft, press-fitting tooling is required.

[0003] At present, the existing press-fitting tooling often has inaccurate positioning during use, which reduces the precision of press-fitting and even damages the tooling and the workpiece; and it is impossible to simultaneously install the adjustment bolt and the retaining ring in a single press-fitting, which reduces the press-fitting efficiency. Therefore, a sector gear shaft press-fitting bolt tooling is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of inaccurate positioning that often occurs in the prior art, resulting in reduced press-fitting accuracy; and the inability to simultaneously install the adjustment bolt and the retaining ring in a single press-fitting, resulting in reduced press-fitting efficiency, and to propose a fan gear shaft press-fitting bolt tooling.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A fan-shaped gear shaft press-fit bolt tool, comprising a frame and a hydraulic cylinder, wherein the hydraulic cylinder is fixed on the top of the frame, and also comprises: a mounting plate fixed on the base of the frame, wherein a gear shaft body is mounted on the mounting plate, an adjusting bolt and a retaining ring are placed on the top of the gear shaft body, and a clamping portion for limiting the gear shaft body is provided on the mounting plate; a press-fit plate sliding along the vertical direction of the frame, the top of the press-fit plate being fixed to the bottom of the telescopic end of the hydraulic cylinder, wherein a press-fit portion is provided at the bottom of the press-fit plate, and the press-fit portion is used to accurately press the adjusting bolt and the retaining ring into the gear shaft body.

[0006] In order to facilitate press-fit positioning, preferably, the clamping portion includes a V-shaped positioning clip, the V-shaped positioning clip is fixedly connected to the top of the mounting plate, and the top of the V-shaped positioning clip is fixedly connected to a gear positioning block.

[0007] Furthermore, the opening of the V-shaped positioning clip is tangent to the outer wall of the gear shaft body, and the notch of the gear positioning block is engaged with the sector gear portion of the gear shaft body.

[0008] In order to improve the pressing effect, preferably, the pressing part includes a conversion plate, the conversion plate is fixed to the bottom of the pressing plate, the bottom of the conversion plate is fixedly connected to a mounting seat, and both sides of the mounting seat are fixedly connected to pressing knives.

[0009] Furthermore, the pressing knives on both sides are symmetrically arranged along the center of the mounting seat, and the midpoint of the line connecting the pressing knives on both sides is located directly above the adjusting bolt.

[0010] Furthermore, the distance between the pressing knives on both sides is greater than the diameter of the adjusting bolt, and the bottom ends of the pressing knives on both sides are aligned with the retaining ring to be installed on the top of the gear shaft body.

[0011] In order to improve the press-fitting accuracy, preferably, both sides of the outer wall of the press-fitting plate are fixedly connected with guide sliders, both sides of the frame body are fixedly connected with guide rods, and the guide sliders are slidably sleeved on the guide rods.

[0012] In order to improve the stability of the gear shaft body during press assembly, preferably, a bending plate is fixedly connected to the side wall of the frame base, an electric push rod is fixedly connected to the side wall of the bending plate, the telescopic end of the electric push rod is fixedly connected to an arc box, and limiting rods are fixedly connected on both sides of the inner wall of the arc box, and the end of the limiting rod away from the bending plate is fixedly connected to the arc plate.

[0013] In order to reduce clamping wear, further, a positioning spring is fixedly connected between the outer arc wall of the arc plate and the inner cavity of the arc box, and an anti-wear pad is fixedly connected to the inner arc wall of the arc plate.

[0014] Furthermore, the arc plate and the gear positioning block are symmetrically arranged, and when the electric push rod is extended, the arc plate and the gear positioning block clamp and fix the gear shaft body.

[0015] Compared with the prior art, the present invention provides a sector gear shaft press bolt tooling, which has the following beneficial effects: 1. The sector gear shaft press-fit bolt tooling realizes effective positioning of the gear shaft body through the arrangement of the V-shaped positioning clamp and the gear positioning block, ensures that the pressing cutter is aligned with the adjusting bolt and the retaining ring, effectively improves the press-fitting accuracy, and ensures the press-fitting quality.

[0016] 2. The sector gear shaft press-fit bolt tooling can simultaneously realize the press-fitting between the adjusting bolt and the retaining ring in a single press of the press-fitting plate by means of the press cutters and the conversion plate symmetrically arranged on both sides, thereby effectively improving the press-fitting efficiency.

[0017] 3. The sector gear shaft press-fit bolt tooling, through the arrangement of the arc plate and the positioning spring, can not only meet the required force for horizontal clamping, but also effectively reduce the clamping wear on the gear shaft body, thereby improving the protection effect on the gear shaft body; secondly, it forms a symmetrical clamping effect with the V-shaped positioning clamp, thereby effectively improving the stability of the gear shaft body during the press-fitting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall installation structure of a sector gear shaft press bolt tooling proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a sector gear shaft press bolt tooling proposed by the present invention; Figure 3 This is a bottom view structural schematic diagram of a sector gear shaft press bolt tooling proposed by the present invention; Figure 4 It is a partial enlarged structural schematic diagram of a press-fit plate of a sector gear shaft press-fit bolt tooling proposed by the present invention; Figure 5 It is a partial enlarged structural schematic diagram of a mounting plate of a sector gear shaft press-fit bolt tooling proposed by the present invention; Figure 6 This is a schematic diagram of the internal structure of an arc box of a sector gear shaft press bolt tooling proposed by the present invention; Figure 7 This is a schematic diagram of the gear shaft body structure of a sector gear shaft press-fit bolt tooling proposed by the present invention.

[0019] In the figure: 1, frame; 2, hydraulic cylinder; 21, press plate; 3, mounting plate; 31, guide slider; 311, guide rod; 4, gear shaft body; 41, adjustment bolt; 42, retaining ring; 5, V-shaped positioning clamp; 51, gear positioning block; 6, conversion plate; 61, mounting seat; 62, pressing knife; 7, bending plate; 71, electric push rod; 72, arc box; 73, limit rod; 74, arc plate; 741, anti-wear pad; 75, positioning spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0022] Reference Figure 1-Figure 7 A fan-shaped gear shaft press-fit bolt tooling includes a frame 1 and a hydraulic cylinder 2, the hydraulic cylinder 2 is fixed on the top of the frame 1, and also includes: a mounting plate 3 fixed on the base of the frame 1, wherein a gear shaft body 4 is mounted on the mounting plate 3, an adjusting bolt 41 and a retaining ring 42 are placed on the top of the gear shaft body 4, and a clamping portion for limiting the gear shaft body 4 is provided on the mounting plate 3; a press-fit plate 21 sliding in the vertical direction of the frame 1, the top of the press-fit plate 21 is fixed to the bottom of the telescopic end of the hydraulic cylinder 2, wherein a press-fit portion is provided at the bottom of the press-fit plate 21, and the press-fit portion is used to accurately press the adjusting bolt 41 and the retaining ring 42 into the gear shaft body 4.

[0023] Through the arrangement of the above structure, the gear shaft body 4 is first fixed to the mounting plate 3 by means of the clamping part, and then the hydraulic cylinder 2 drives the pressing plate 21 to move downward with the pressing part, so as to accurately and quickly press the adjusting bolt 41 and the retaining ring 42 into the gear shaft body 4. The whole operation is fast, stable and reliable, which effectively improves the processing efficiency and pressing quality.

[0024] Reference Figure 1 , Figure 2 and Figure 5 , wherein the clamping part includes a V-shaped positioning clip 5, which is fixedly connected to the top of the mounting plate 3, and a gear positioning block 51 is fixedly connected to the top of the V-shaped positioning clip 5; the opening of the V-shaped positioning clip 5 is tangent to the outer wall of the gear shaft body 4, and the tangency of the above two can make the central axis of the V-shaped positioning clip 5 and the circle of the gear shaft body 4 on the same horizontal line, thereby realizing effective positioning of the gear shaft body 4 by water, and the notch of the gear positioning block 51 is clamped with the fan-shaped gear part of the gear shaft body 4, thereby ensuring that the gear shaft body 4 is placed symmetrically along the above horizontal line, so that the subsequent pressing part can smoothly align with the notches on both sides of the mounting retaining ring 42 of the gear shaft body 4 when pressing down, thereby successfully completing the pressing operation.

[0025] Through the arrangement of the above-mentioned structure, after the gear shaft body 4 is placed on the mounting plate 3, it is pushed toward the side close to the V-shaped positioning clamp 5 so that its outer cylindrical wall is tangent to the V-shaped positioning clamp 5, while ensuring that the middle teeth of the sector gear portion of the gear shaft body 4 are stuck in the groove of the gear positioning block 51, thereby realizing the positioning of the gear shaft body 4 and improving the accuracy of subsequent press-fitting.

[0026] Reference Figure 1-Figure 4 The pressing part includes a conversion plate 6, which is fixed at the bottom of the pressing plate 21. A mounting seat 61 is fixedly connected to the bottom of the conversion plate 6, and pressing knives 62 are fixedly connected to both sides of the mounting seat 61; the pressing knives 62 on both sides are symmetrically arranged along the center of the mounting seat 61, and the midpoint of the line connecting the pressing knives 62 on both sides is located directly above the adjusting bolt 41, and the distance between the pressing knives 62 on both sides is greater than the diameter of the adjusting bolt 41, and the bottom ends of the pressing knives 62 on both sides are aligned with the retaining ring 42 to be installed on the top of the gear shaft body 4, so that when the gear shaft body 4 is completely fixed, the midpoint of the line connecting the pressing knives 62 on both sides is just aligned with the top of the adjusting bolt 41, thereby effectively ensuring the pressing accuracy.

[0027] With the arrangement of the above structure, the hydraulic cylinder 2 is turned on, and the telescopic end of the hydraulic cylinder 2 pushes the pressing plate 21 to move downward with the pressing knife 62. First, the pressing knife 62 will pass over the adjusting bolt 41 and abut against the retaining ring 42 along both sides of the adjusting bolt 41. In this process, the bottom of the conversion plate 6 will abut against the top of the adjusting bolt 41. In this way, as the hydraulic cylinder 2 continues to extend, the adjusting bolt 41 and the retaining ring 42 can be accurately pressed into the gear shaft body 4, which effectively improves the pressing efficiency.

[0028] Reference Figure 1-Figure 3 , wherein both sides of the outer wall of the pressing plate 21 are fixedly connected with guide sliders 31, both sides of the frame body 1 are fixedly connected with guide rods 311, and the guide sliders 31 are slidably sleeved on the guide rods 311; utilizing the setting of the guide rods 311 and the guide sliders 31, when the hydraulic cylinder 2 pushes the pressing plate 21 to move downward, the pressing plate 21 moves downward smoothly along the guide rods 311 on both sides, avoiding deviation and ensuring the pressing accuracy.

[0029] Reference Figure 1 , Figure 2 and Figure 6The cam 72 is a substantially parallelogram of the cam 74, with the cam 73 being substantially parallel to the cam 74 and the cam 75 being substantially parallel to the cam 74.

[0030] With the arrangement of the above structure, when the electric push rod 71 continues to extend, the arc plate 74 will squeeze the positioning spring 75, and finally, under the rebound effect of the positioning spring 75, the arc plate 74 will fit tightly with the gear shaft body 4, and form a symmetrical clamping effect with the V-shaped positioning clamp 5, so that the gear shaft body 4 is stably seated on the mounting plate 3; in addition, since the vertical direction is the main force direction during the press-fitting process, the rebound effect of the positioning spring 75 is used for clamping, which can meet the force required for horizontal clamping, and can also minimize the clamping wear on the gear shaft body 4, thereby improving the protection effect on the gear shaft body 4.

[0031] Reference Figure 1-Figure 7In the present invention, when in use, the operator places the gear shaft body 4 with the adjusting bolt 41 and the retaining ring 42 on the mounting plate 3, so that the outer circular wall of the gear shaft body 4 is tangent to the V-shaped positioning clip 5, and at the same time, the middle tooth of the fan-shaped gear part of the gear shaft body 4 is stuck in the notch of the gear positioning block 51; then the electric push rod 71 is turned on to drive the arc box 72 to slide to the side close to the gear shaft body 4, so that the anti-wear pad 741 of the side wall of the arc plate 74 fits on the gear shaft body 4, and when the electric push rod 71 continues to extend, the arc plate 74 will squeeze the positioning spring 75, and finally, under the rebound action of the positioning spring 75, the arc plate 74 and the gear shaft body 4 are tightly fitted and connected. The V-shaped positioning clamp 5 forms a symmetrical clamping effect, so that the gear shaft body 4 is stably located on the mounting plate 3, and at the same time, the adjusting bolt 41 is positioned just below the midpoint of the line connecting the pressing knives 62 on both sides, effectively improving the pressing accuracy; then the hydraulic cylinder 2 is turned on, and the telescopic end of the hydraulic cylinder 2 pushes the pressing plate 21 with the pressing knife 62 to move downward, and the pressed knife 62 will hit the retaining ring 42 along both sides of the adjusting bolt 41, and the bottom of the conversion plate 6 will hit the top of the adjusting bolt 41, so as the hydraulic cylinder 2 continues to extend, the adjusting bolt 41 and the retaining ring 42 can be accurately pressed into the gear shaft body 4, and the whole operation is fast, stable and reliable, which effectively improves the processing efficiency and pressing quality.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sector gear shaft press bolt tool, comprising a frame (1) and a hydraulic cylinder (2), wherein the hydraulic cylinder (2) is fixed on the top of the frame (1), and is characterized in that: Also includes: A mounting plate (3) fixed to the base of the frame (1), The mounting plate (3) is provided with a gear shaft body (4), an adjusting bolt (41) and a retaining ring (42) are placed on the top of the gear shaft body (4), and a clamping portion for limiting the position of the gear shaft body (4) is provided on the mounting plate (3); A pressing plate (21) slides vertically along the frame (1), wherein the top of the pressing plate (21) is fixed to the bottom of the telescopic end of the hydraulic cylinder (2). A pressing portion is provided at the bottom of the pressing plate (21), and the pressing portion is used to accurately press the adjusting bolt (41) and the retaining ring (42) into the gear shaft body (4).

2. A sector gear shaft press bolt fixture according to claim 1, characterized in that: The clamping portion comprises a V-shaped positioning clip (5), the V-shaped positioning clip (5) is fixedly connected to the top of the mounting plate (3), and the top of the V-shaped positioning clip (5) is fixedly connected to a gear positioning block (51).

3. A sector gear shaft press bolt fixture according to claim 2, characterized in that: The opening of the V-shaped positioning clip (5) is tangent to the outer wall of the gear shaft body (4), and the notch of the gear positioning block (51) is engaged with the sector gear portion of the gear shaft body (4).

4. The sector gear shaft press bolt fixture according to claim 1, characterized in that: The pressing portion comprises a conversion plate (6), the conversion plate (6) being fixed to the bottom of the pressing plate (21), the bottom of the conversion plate (6) being fixedly connected to a mounting seat (61), and both sides of the mounting seat (61) being fixedly connected to pressing knives (62).

5. A sector gear shaft press bolt tool as claimed in claim 4, characterized in that: The pressing knives (62) on both sides are symmetrically arranged along the center of the mounting seat (61), and the midpoint of the line connecting the pressing knives (62) on both sides is located directly above the adjusting bolt (41).

6. A sector gear shaft press bolt tool as claimed in claim 4, characterized in that: The distance between the pressing knives (62) on both sides is greater than the diameter of the adjusting bolt (41), and the bottom ends of the pressing knives (62) on both sides are aligned with the retaining ring (42) to be installed on the top of the gear shaft body (4).

7. A sector gear shaft press bolt tool as claimed in claim 4, characterized in that: Both sides of the outer wall of the pressing plate (21) are fixedly connected with guide sliders (31), and both sides of the frame body (1) are fixedly connected with guide rods (311), and the guide sliders (31) are slidably sleeved on the guide rods (311).

8. The sector gear shaft press bolt tool according to claim 2, characterized in that: A bending plate (7) is fixedly connected to the side wall of the base of the frame (1), an electric push rod (71) is fixedly connected to the side wall of the bending plate (7), a telescopic end of the electric push rod (71) is fixedly connected to an arc box (72), both sides of the inner wall of the arc box (72) are fixedly connected to limiting rods (73), and one end of the limiting rod (73) away from the bending plate (7) is fixedly connected to the arc plate (74).

9. A sector gear shaft press bolt tool as claimed in claim 8, characterized in that: A positioning spring (75) is fixedly connected between the outer arc wall of the arc plate (74) and the inner cavity of the arc box (72), and an anti-wear pad (741) is fixedly connected to the inner arc wall of the arc plate (74).

10. A sector gear shaft press bolt tool according to claim 9, characterized in that: The arc-shaped plate (74) and the gear positioning block (51) are symmetrically arranged, and when the electric push rod (71) is extended, the arc-shaped plate (74) and the gear positioning block (51) clamp and fix the gear shaft body (4).

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