Automobile steering knuckle ball head pin hole fine boring guide tool

Abstract

The utility model discloses steering knuckle ball head pinhole fine boring guiding tool, including work table, the below of work table is provided with work piece conveying line, the downside of work table is provided with lifting platform, the bottom of lifting platform is provided with guide cylinder, the inner contour of guide cylinder is matched with the outer contour of ball head work piece, be provided with lifting mechanism between platform and work table, platform surface still is provided with drive part, drive part is connected with boring cutter, work piece conveying line is provided with work piece and is placed seat, the clearance for accommodating guide cylinder is seted up on work piece and is placed seat, work piece conveying line is provided with with the locking mechanism of contact or separation of guide cylinder. Guide cylinder and boring cutter are integrally arranged, and synchronous lifting makes the position of both relatively fixed, when guide cylinder moves downward, will contact locking mechanism, and make locking mechanism from multiple directions to the ball head work piece on centering platform carry out clamping, and this clamping process can also automatically correct the position of work piece, makes it in the central state.

Description

Technical Field

[0001] This utility model relates to a guiding tool, specifically a precision boring guiding tool for ball joint pin holes in automotive steering knuckles, belonging to the field of boring tooling technology. Background Technology

[0002] The steering knuckle ball joint acts between the wheel hub and the suspension of a car, connecting the universal joint rod. Its mounting hole diameter directly determines the installation stability of the universal joint. Therefore, in the machining process of the ball joint, after drilling, further boring is required in the mounting hole to ensure a good fit with the universal joint. However, because the ball joint is cylindrical with curved ends, positioning is difficult. During boring, the workpiece will be subjected to a large tangential force. When using conventional fixtures, relative movement between the fixture and the workpiece is likely to occur, affecting the boring effect. Furthermore, since the boring process occurs after drilling and involves machining the existing hole, and the ball joint is relatively small, the corresponding hole size is also small. Therefore, accurately inserting the boring bar into the existing hole without deviation is a significant challenge. Thus, further improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a precision boring guide tool for the ball joint pin hole of an automobile steering knuckle. The tool has accurate guiding position, simple and reasonable structure, high boring accuracy, and stable fixation.

[0004] A precision boring guide tool for ball joint pin holes in automotive steering knuckles includes a worktable; a workpiece conveyor line is provided below the worktable, and a lifting platform is provided on the lower side of the worktable; a guide cylinder is provided at the bottom of the lifting platform; the inner contour of the guide cylinder matches the outer contour of the ball joint workpiece; a lifting mechanism is provided between the platform and the worktable; a driving part is also provided on the surface of the platform; the driving part is connected to the boring tool; a workpiece placement seat is provided on the workpiece conveyor line; a gap is provided on the workpiece placement seat to accommodate the guide cylinder; and a locking mechanism is provided on the workpiece conveyor line for contacting or separating from the guide cylinder.

[0005] Furthermore, the lifting mechanism includes two components; the lifting mechanism is a scissor lift; the two scissor lifts are symmetrically arranged on both sides of the surface of the lifting platform; one end of each scissor lift is connected to a cylinder; the upper and lower ends of the scissor lift are slidably connected to the lifting platform and the worktable, respectively.

[0006] Furthermore, the drive unit is a motor; the motor is located between the two scissor lifters; a through hole is provided at the center of the lifting platform; the boring tool passes through the through hole and one end is connected to the motor; the other end of the boring tool is located on the underside of the lifting platform.

[0007] Furthermore, the guide cylinder is located outside the boring tool and is coaxially arranged with the boring tool; the guide cylinder has an opening on its lower side; the workpiece placement seat includes a central platform and an outer platform; a gap is formed between the central platform and the outer platform.

[0008] Furthermore, the surface of the central platform is provided with three or four guide grooves; the locking mechanism includes a locking block slidably connected in the guide groove; the locking block and the guide groove are connected by a spring; the outer end of the locking is wedge-shaped and contacts or separates from the bottom of the guide cylinder.

[0009] Furthermore, the locking block has an inverted L-shaped cross-section; the other end of the locking block has an abutment protrusion; the abutment protrusion is in close contact with the outer peripheral surface of the workpiece.

[0010] This invention offers the following advantages: the guide cylinder and the boring tool are integrated and move up and down synchronously, ensuring their relative positions are fixed. When the guide cylinder moves downward, it contacts the locking mechanism, which clamps the ball-head workpiece on the center platform from multiple directions. This clamping process also automatically corrects the workpiece's position, keeping it centered. With the workpiece and guide cylinder aligned on the same axis, they are naturally aligned with the boring tool, providing precise guidance for the tool to enter the workpiece hole. As the lifting platform continues to descend, the lower side of the guide cylinder enters the gap, providing space for the boring tool to descend until it is fully inside the workpiece hole.

[0011] This method employs a guide tube that first corrects and locks the workpiece's position before the boring tool enters. Because the positions of the boring tool and the guide tube are pre-fixed and will not change, once the workpiece is in the correct position relative to the guide tube, the boring tool will inevitably enter the workpiece in the correct position as well. This method minimizes the risk of boring tool position deviation or workpiece position errors. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the locking mechanism.

[0014] Wherein: 1 is the workbench, 2 is the workpiece conveyor line, 3 is the lifting platform, 4 is the guide cylinder, 5 is the drive unit, 6 is the boring tool, 7 is the workpiece placement seat, 7-1 is the clearance, 7-2 is the center platform, 7-3 is the outer platform, 8 is the scissor lift, 9 is the cylinder, 10 is the locking block, 10-1 is the abutment protrusion, 11 is the spring, and 12 is the ball head workpiece. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] See Figures 1-2 This application discloses a precision boring guide tool for ball joint pin holes in automotive steering knuckles, including a worktable 1; a workpiece conveyor line 2 is provided below the worktable 1, and a lifting platform 3 is provided on the lower side of the worktable 1; a guide cylinder 4 is provided at the bottom of the lifting platform 3; the inner contour of the guide cylinder 4 matches the outer contour of the ball joint workpiece; a lifting mechanism is provided between the lifting platform 3 and the worktable 1; a driving part 5 is also provided on the surface of the lifting platform 3; the driving part 5 is connected to a boring tool 6; a workpiece placement seat 7 is provided on the workpiece conveyor line 2; a gap 7-1 is provided on the workpiece placement seat 7 for accommodating the guide cylinder 4; and a locking mechanism is provided on the workpiece conveyor line 2 for contacting or separating from the guide cylinder 4.

[0017] Furthermore, the lifting mechanism includes two components; the lifting mechanism is a scissor lift 8; the two scissor lifts 8 are symmetrically arranged on both sides of the surface of the lifting platform 3; one end of each scissor lift 8 is connected to a cylinder 9; the upper and lower ends of the scissor lift 8 are slidably connected to the lifting platform 3 and the worktable 1, respectively.

[0018] Furthermore, the drive unit 5 is a motor; the motor is located between the two scissor lifters 8; a through hole is provided at the center of the lifting platform 3; the boring tool 6 passes through the through hole and is connected to the motor at one end; the other end of the boring tool 6 is located on the lower side of the lifting platform 3.

[0019] Furthermore, the guide cylinder 4 is located outside the boring tool 6 and is coaxially arranged with the boring tool 6; the guide cylinder 4 has an opening on its lower side; the workpiece placement seat 7 includes a central platform 7-2 and an outer platform 7-3; a gap 7-1 is formed between the central platform 7-2 and the outer platform 7-3.

[0020] Furthermore, the surface of the central platform 7-2 is provided with three or four guide grooves; the locking mechanism includes a locking block 10 that is slidably connected in the guide groove; the locking block 10 is connected to the guide groove by a spring 11; the outer end of the locking block 10 is wedge-shaped and contacts or separates from the bottom of the guide cylinder 4.

[0021] Furthermore, the locking block 10 has an inverted L-shaped cross section; the other end of the locking block 10 has an abutment protrusion 10-1; the abutment protrusion 10-1 is in close contact with the outer peripheral surface of the workpiece.

[0022] Working principle: The workpiece is placed on the center table 7-2 and transferred to the designated position by the workpiece conveyor line 2. The lifting platform 3 is lowered by the scissor lifter 8. At this time, the guide cylinder 4 and the boring tool 6 will descend synchronously with it. However, the length of the guide cylinder 4 is greater than the length of the boring tool 6, so the guide cylinder 4 will reach the position of the center table 7-2 first and contact the outer end of the locking block 10, pushing the locking block 10 to move inward. Multiple locking blocks move inward from different directions to clamp the workpiece on the center table 7-2 and correct its position. As the lifting platform 3 continues to descend, the lower side of the guide cylinder 4 will move into the gap 7-1. At this time, the boring tool 6 is already in the hole position of the ball head. Then, its drive unit can be activated to make the boring tool 6 rotate and perform boring processing in the hole position.

[0023] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A precision boring guide tool for automotive steering knuckle ball joint pin holes, comprising a worktable; a workpiece conveyor line is provided below the worktable, characterized in that: A lifting platform is provided on the lower side of the worktable; a guide cylinder is provided at the bottom of the lifting platform; the inner contour of the guide cylinder matches the outer contour of the ball head workpiece; a lifting mechanism is provided between the platform and the worktable; a driving part is also provided on the surface of the platform; the driving part is connected to the boring tool; a workpiece placement seat is provided on the workpiece conveying line; a gap for accommodating the guide cylinder is provided on the workpiece placement seat; a locking mechanism for contacting or separating from the guide cylinder is provided on the workpiece conveying line.

2. The precision boring guide tool for the ball joint hole of an automotive steering knuckle according to claim 1, characterized in that: The lifting mechanism includes two scissor lifts; the two scissor lifts are symmetrically arranged on both sides of the surface of the lifting platform; one end of each scissor lift is connected to a cylinder; the upper and lower ends of the scissor lift are slidably connected to the lifting platform and the worktable, respectively.

3. The precision boring guide tool for the ball joint hole of an automotive steering knuckle according to claim 2, characterized in that: The drive unit is a motor; the motor is located between the two scissor lifters; a through hole is provided at the center of the lifting platform; the boring tool passes through the through hole and one end is connected to the motor; the other end of the boring tool is located on the underside of the lifting platform.

4. The precision boring guide tool for the ball joint hole of an automotive steering knuckle according to claim 3, characterized in that: The guide cylinder is located outside the boring tool and is coaxially arranged with the boring tool; the guide cylinder has an opening on its lower side; the workpiece placement seat includes a central platform and an outer platform; a gap is formed between the central platform and the outer platform.

5. The precision boring guide tool for the ball joint hole of an automotive steering knuckle according to claim 4, characterized in that: The surface of the central platform is provided with three or four guide grooves; the locking mechanism includes a locking block that is slidably connected in the guide groove; the locking block and the guide groove are connected by a spring; the outer end of the locking mechanism is wedge-shaped and contacts or separates from the bottom of the guide cylinder.

6. The precision boring guide tool for the ball joint hole of an automotive steering knuckle according to claim 5, characterized in that: The locking block has an inverted L-shaped cross section; the other end of the locking block has an abutment protrusion; the abutment protrusion is in close contact with the outer peripheral surface of the workpiece.

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