A device for boring the eye of a vehicle leaf spring

Abstract

This invention patent discloses a boring processing device for automotive leaf spring coil ears, including a processing device body, a boring machine base at the bottom of the processing device body, a boring machine processing base at the upper left end of the boring machine base, a processing shaft at the front end of the boring machine processing base, a leaf spring coil ear fixing device at the front of the boring machine processing base, and a leaf spring arm clamping device on the right side of the leaf spring coil ear fixing device. In summary, this invention patent has the advantages of simple structure, convenient use, automatic fixing of leaf spring coil ears and leaf spring arms during leaf spring processing to prevent leaf spring from shaking during boring and causing dimensional deviations, saving manpower and material resources, improving production efficiency, and achieving higher precision during boring.

Description

Technical Field

[0001] This invention patent relates to the field of automotive leaf spring processing technology, and in particular to a device for boring holes in automotive leaf spring coils. Background Technology

[0002] Leaf springs are the most widely used elastic element in automotive suspensions. They consist of several alloy spring leaves of equal width but unequal length and thickness, forming an approximately uniform elastic beam. When a leaf spring is installed in a car suspension and bears a positive vertical load, each spring leaf deforms under stress, tending to arch upwards. At this time, the axle and frame move closer together. When the axle and frame move away from each other, the positive vertical load and deformation on the leaf spring gradually decrease, sometimes even reversing. Flat, rectangular steel plates are bent into a chassis spring structure, with one end mounted to a hanger by a pin and the other end connected to the main beam by a lug, allowing the spring to extend and retract.

[0003] In the manufacturing process of leaf springs, a crucial step is fixing the leaf spring and boring and milling the lug holes. The quality of this step directly affects the factory quality of the leaf spring and the accuracy and reliability of its subsequent installation. Currently, this step relies on workers manually fixing one side of the leaf spring's lugs and then boring and milling the lug holes one by one. However, currently, workers often fail to secure the leaf spring lugs in the correct position during the fixing process, leading to significant errors and failure to meet dimensional requirements during boring. Furthermore, the leaf spring arm requires specific clamping fixtures and manual clamping to prevent spring movement during boring. Existing leaf spring fixing fixtures cannot be adjusted for different leaf spring sizes, resulting in wasted costs and labor-intensive manual clamping, which also reduces production efficiency. Therefore, developing a simple, easy-to-use automotive leaf spring lug boring and fixing device that automatically fixes the leaf spring lugs and arms during machining, preventing spring movement and dimensional deviations during boring, saves manpower and resources, improves production efficiency, and achieves higher precision during boring is of significant application value. Summary of the Invention

[0004] The purpose of this invention is to provide a boring and machining device for automotive leaf spring coils, addressing the problems of existing leaf spring coils failing to be fixed in the correct position during boring, resulting in significant errors and inability to meet dimensional requirements. Furthermore, existing leaf spring fixing fixtures cannot be adjusted for different leaf spring sizes, requiring specialized fixtures and manual clamping, which wastes manpower and reduces production efficiency. Therefore, developing a simple, easy-to-use device that automatically fixes the leaf spring coil and arm during machining, preventing dimensional deviations caused by spring movement during boring, saving manpower and resources, improving production efficiency, and achieving higher precision during boring is of significant application value.

[0005] To achieve the above objectives, the technical solution provided by this invention patent is as follows: A machining device for boring the leaf spring coil lugs of automobiles includes a machining device body, a boring machine base is provided at the bottom of the machining device body, a boring machine machining base is provided at the upper left end of the boring machine base, a machining shaft is provided at the front end of the boring machine machining base, a leaf spring coil lug fixing device is provided in front of the boring machine machining base, and a leaf spring arm clamping device is provided on the right side of the leaf spring coil lug fixing device. The leaf spring coiling lug fixing device has a side wall plate at the bottom, a support plate at the top of the side wall plate, a connecting rear side wall plate at the upper end of the rear end of the support plate, a positioning block at the top of the connecting rear side wall plate, an adjusting screw at the upper middle part of the positioning block, a V-shaped positioning slider below the adjusting screw, a lower support column directly below the V-shaped positioning slider, and the bottom of the lower support column passes through the support plate and is connected to the connecting cylinder. The connecting cylinder is located above the support base plate. A slide rail is provided on the right side wall of the side wall plate, a sliding block is located outside the slide rail and is connected to the slide rail. A support slide plate is connected to the right side of the sliding block, and a lifting cylinder is connected to the bottom of the support slide plate. The leaf spring arm clamping device has a clamping base plate at its bottom, a linear slide rail at its upper end, and a clamping support plate at its bottom that is connected to the linear slide rail. A clamping cylinder is located at the upper end of the clamping support plate, and a clamping movable block is connected to the rear side of the clamping cylinder. A center positioning screw is located above the center of the clamping base plate, and a fixing nut seat at the bottom of the clamping support plate is sleeved on the outside of the center positioning screw and connected to it. A crank handle is connected to the right side of the center positioning screw.

[0006] Furthermore, a strip-shaped hole is provided on the rear side wall panel, and the protrusion on the rear side wall of the V-shaped positioning slider is located in the strip-shaped hole and is connected with the connecting screw.

[0007] Furthermore, the positioning block is fixedly connected to the rear side panel, and the bottom of the adjusting screw passes through the positioning block and contacts the top of the V-shaped positioning slider.

[0008] Furthermore, the vertical center line of the V-shaped positioning slider is aligned with the center line of the boring tool.

[0009] Furthermore, a foot switch is provided at the bottom of the boring machine base, and the foot switch is electrically connected to the clamping cylinder.

[0010] Furthermore, a photoelectric switch is installed at the bottom of the clamping movable block, and the connecting cylinder is electrically connected to the photoelectric switch and the foot switch respectively.

[0011] Beneficial effects: 1. This invention patent provides a leaf spring coil ear fixing device on the rear side of the boring machine machining base. A V-shaped positioning slider is located at the top of the leaf spring coil ear fixing device, and an adjusting screw is located above the middle of the V-shaped positioning slider. Rotating the adjusting screw allows for fine-tuning of the V-shaped positioning slider's vertical movement. A lower support column is located directly below the V-shaped positioning slider, and a connecting cylinder is connected to the bottom of the lower support column. The connecting cylinder can push the lower support column up and down. A support slide plate is fixed to the right side wall of the leaf spring coil ear fixing device, and a lifting cylinder is connected to the bottom of the support slide plate. The lifting cylinder can push the support slide plate up and down. During use, the vertical center line of the V-shaped positioning slider must be aligned with the center line of the boring tool. Simultaneously, the height of the V-shaped positioning slider is adjusted by turning the adjusting screw according to the boring tool diameter, the outer diameter of the coil ear, and the height of the V-shaped positioning slider. The coil ear is then placed between the lower support column and the V-shaped positioning slider. The foot switch activates the connecting cylinder, which pushes the lower support column upward, causing the outer wall of the leaf spring to press tightly against the inner wall of the V-shaped positioning slider, thus fixing the leaf spring. Additionally, a support slide plate provides a support point during the engagement of the leaf spring with the V-shaped positioning slider and lower support column, facilitating the engagement. The leaf spring leaf spring requires no manual intervention during fixing. Furthermore, adjusting the positions of the V-shaped positioning slider, the lower support column, and the support slide plate allows for higher precision during boring. Adjusting the positions of different components accommodates the boring needs of various leaf spring leaf spring specifications. Moreover, during fixing, simply placing the leaf spring between the lower support column and the V-shaped positioning slider allows for automatic positioning under the thrust of the lower support column and the V-shaped structure, eliminating the need for manual positioning, saving manpower and improving work efficiency. 2. A leaf spring arm clamping device is installed on the right side of the boring base. The position of the leaf spring arm clamping device needs to be determined and fixed according to the position of the boring base and the position of the leaf spring lug fixing device. A clamping base plate is set at the bottom of the leaf spring arm clamping device. A linear slide rail and a center positioning screw are set on the clamping base plate. A clamping support plate is located above the clamping base plate and is connected to the linear slide rail and the center positioning screw. A clamping cylinder and a clamping movable block are set above the clamping support plate. The clamping cylinder can push the clamping movable block to move back and forth. The clamping cylinder is electrically connected to a foot switch. During use, after the leaf spring lug is placed in the appropriate position, the foot switch is stepped on and the clamping cylinder is activated to push the clamping movable block to fix the leaf spring arm. During the process, the center positioning screw can be rotated by shaking the handle to control the left and right movement of the clamping support plate, clamping cylinder, and clamping movable block. In use, the left and right positions of the clamping support plate and the clamping movable block can be adjusted according to different specifications of leaf springs to fix the leaf spring arms of different specifications. There is no need to change the mold, and the clamping of the leaf spring arm is automatic during the clamping process, which saves manpower and material resources and improves production efficiency. In summary, this invention patent has the advantages of simple structure, convenient use, automatic fixation of leaf spring lugs and leaf spring arms during leaf spring processing to prevent leaf spring from shaking during boring and causing dimensional deviations, saving manpower and material resources, improving production efficiency, and having higher precision during boring. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is a three-dimensional structural diagram of the leaf spring coil eye fixing device of this invention patent; Figure 3 This is a schematic diagram of the main structure of the leaf spring coiling lug fixing device of this invention. Figure 4 This is a three-dimensional structural diagram of the leaf spring arm clamping device of this invention.

[0013] Reference numerals: 0. Machining device body; 1. Leaf spring coiling ear fixing device; 11. Connecting rear side wall plate; 12. Positioning block; 13. Adjusting screw; 14. V-shaped positioning slider; 15. Lower support column; 16. Support plate; 17. Connecting cylinder; 18. Support base plate; 101. Side wall plate; 102. Sliding block; 103. Lifting cylinder; 104. Support slide plate; 2. Leaf spring arm clamping device; 20. Clamping base plate; 21. Linear slide rail; 22. Handle; 23. Center positioning screw; 24. Clamping support plate; 25. Clamping cylinder; 26. Clamping movable block; 3. Boring machine base; 4. Boring machine machining base; 5. Leaf spring. Detailed Implementation

[0014] The embodiments of this invention will be further described below with reference to the accompanying drawings.

[0015] Specific embodiments of this invention patent, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this invention patent provides a machining device for boring the leaf spring coil lugs of automobiles, including a machining device body 0, a boring machine base 3 at the bottom of the machining device body 0, a boring machine machining base 4 at the upper left end of the boring machine base 3, a machining shaft at the front end of the boring machine machining base 4, a leaf spring coil lug fixing device 1 at the front of the boring machine machining base 4, and a leaf spring arm clamping device 2 at the right side of the leaf spring coil lug fixing device 1; The leaf spring coiling ear fixing device 1 has a side wall plate 101 at the bottom, a support plate 16 at the upper end of the side wall plate 101, a connecting rear side wall plate 11 at the upper end of the rear end of the support plate 16, a positioning block 12 at the top of the connecting rear side wall plate 11, an adjusting screw 13 at the upper middle part of the positioning block 12, a V-shaped positioning slider 14 below the adjusting screw 13, a lower support column 15 directly below the V-shaped positioning slider 14, the bottom of the lower support column 15 passes through the support plate 16 and is connected to the connecting cylinder 17, the connecting cylinder 17 is located above the support base plate 18, a slide rail is provided on the right side wall of the side wall plate 101, a sliding block 102 is located outside the slide rail and is connected to the slide rail, a support slide plate 104 is connected to the right side of the sliding block 102, and a lifting cylinder 103 is connected to the bottom of the support slide plate 104. The leaf spring arm clamping device 2 has a clamping base plate 20 at its bottom and a linear slide rail 21 at its upper end. The bottom of the clamping support plate 24 is connected to the linear slide rail 21. The upper end of the clamping support plate 24 is equipped with a clamping cylinder 25. A clamping movable block 26 is connected to the rear side of the clamping cylinder 25. A center positioning screw 23 is provided above the middle of the clamping base plate 20. A fixing nut seat at the bottom of the clamping support plate 24 is sleeved on the outside of the center positioning screw 23 and is connected to the center positioning screw 23. A rocker handle 22 is connected to the right side of the center positioning screw 23. like Figure 2 , Figure 3As shown, a leaf spring lug fixing device 1 is installed on the rear side of the boring machine machining base 4. A V-shaped positioning slider 14 is installed on the top of the leaf spring lug fixing device 1. An adjusting screw 13 is installed above the middle of the V-shaped positioning slider 14. The rear side wall of the V-shaped positioning slider 14 passes through the connecting rear side wall plate 11 and cooperates with the fixing screw. The fixing screw and the rear side wall plate 11 cooperate with each other through friction to effectively prevent the V-shaped positioning slider 14 from moving down by its own weight. By rotating the adjusting screw 13, the V-shaped positioning slider 14 can be finely adjusted up and down. The bottom of the adjusting screw 13 passes through the positioning block 12 and contacts the top of the V-shaped positioning slider 14. The positioning block 12 is snapped onto the rear side wall plate 11 and secured by bolts. Fixedly connected to the rear side panel 11, a lower support column 15 is provided directly below the V-shaped positioning slider 14. A connecting cylinder 17 is connected to the bottom of the lower support column 15, which can push the lower support column 15 to move up and down. A support slide plate 104 is fixedly provided on the right side wall of the leaf spring ear fixing device 1. A lifting cylinder 103 is connected to the bottom of the support slide plate 104, which can push the support slide plate 104 to move up and down. During use, the vertical center line of the V-shaped positioning slider 14 needs to be aligned with the center line of the boring bar. At the same time, the V-shaped positioning slider is adjusted by turning the adjusting screw 13 according to the diameter of the boring bar, the outer diameter of the ear, and the height of the V-shaped positioning slider 14. 14. Height (In determining the V-shaped positioning slider 14, the distance from the top of the V-shaped positioning slider 14 to the center of the rolled ear is calculated, and then the distance from the center of the boring bar to the top of the V-shaped positioning slider 14 is calculated. Subtracting the distance from the center of the boring bar to the top of the V-shaped positioning slider 14 from the distance from the top of the V-shaped positioning slider 14 to the center of the rolled ear allows for the calculation of whether the V-shaped positioning slider 14 moves up or down, thus determining the position of the V-shaped positioning slider 14). The rolled ear is placed between the lower support column 15 and the V-shaped positioning slider 14. The foot switch is used to activate the connecting cylinder 17, which pushes the lower support column 15 upward, causing the outer wall of the rolled ear to press tightly against the inner wall of the V-shaped positioning slider 14, completing the rolled ear movement. In addition, by setting a support slide plate 104, the support slide plate 104 provides a support point during the cooperation of the spring ear with the V-shaped positioning slider 14 and the lower support column 15, which is more conducive to the cooperation of the spring ear with the V-shaped positioning slider and the lower support column. The height of the support point can be adjusted according to different leaf spring arc heights. During operation, the lifting cylinder 103 has only one upward force and is in a continuous state. In addition, according to different leaf spring weights, the air pressure of the lifting cylinder 103 can be adjusted to increase the support force of the support point, so that when the spring ear is subjected to the downward pressure of the V-shaped positioning slider 14, the outer circle of the spring ear and the V-shaped positioning slider 14 are in full contact, thereby completing the fixing process of the leaf spring spring ear. like Figure 4As shown, a leaf spring arm clamping device 2 is installed on the right side of the boring base 4. The position of the leaf spring arm clamping device 2 needs to be determined and fixed according to the position of the boring base 4 and the position of the leaf spring coiling ear fixing device 1. A clamping base plate 20 is provided at the bottom of the leaf spring arm clamping device 2. A linear slide rail 21 and a center positioning screw 23 are provided on the clamping base plate 20. A clamping support plate 24 is located above the clamping base plate 20 and is connected to the linear slide rail 21 and the center positioning screw 23. A clamping cylinder 25 and a clamping movable block 26 are provided above the clamping support plate 24. The clamping cylinder 25 can push the clamping cylinder 26 to clamp the leaf spring arm clamping device 20. The clamping block 26 moves back and forth. The clamping cylinder 25 is electrically connected to the foot switch. During use, after the leaf spring coil is placed in the appropriate position, the foot switch is stepped on and the clamping cylinder 25 is activated to push the clamping block 26 to fix the leaf spring arm. During use, the center positioning screw 23 can be rotated by shaking the rocker handle 22 to control the left and right movement of the clamping support plate 24, the clamping cylinder 25 and the clamping block 26. During use, the leaf spring arms of different specifications can be fixed by adjusting the left and right positions of the clamping support plate 24 and the clamping block 26 according to the different specifications of the leaf springs.

[0016] like Figure 2 , Figure 3 As shown, a strip-shaped hole is provided on the rear side wall plate 11. The protrusion on the rear side wall of the V-shaped positioning slider 14 is located in the strip-shaped hole and is connected with the connecting screw. The rear side wall of the V-shaped positioning slider 14 passes through the rear side wall plate 11 and is connected with the fixing screw. The fixing screw and the rear side wall plate 11 cooperate with each other through friction to effectively prevent the V-shaped positioning slider 14 from moving down by its own weight. If it is necessary to move the V-shaped positioning slider 14 up during use, the fastening bolt can be loosened. Since there is a strip-shaped hole, the V-shaped positioning slider 14 can be pulled up by the fastening bolt.

[0017] like Figure 2 , Figure 3 As shown, the positioning block 12 is fixedly connected to the rear side wall plate 11. The bottom of the adjusting screw 13 passes through the positioning block 12 and contacts the top of the V-shaped positioning slider 14. During use, the adjusting screw 13 is rotated to apply a certain pressure to the V-shaped positioning slider 14, thereby causing the V-shaped positioning slider 14 to move downward.

[0018] like Figure 3As shown, the vertical center line of the V-shaped positioning slider 14 is aligned with the center line of the boring bar. The height of the V-shaped positioning slider 14 is adjusted by turning the adjusting screw 13 according to the diameter of the boring bar, the outer diameter of the ear, and the height of the V-shaped positioning slider 14. (In determining the position of the V-shaped positioning slider 14, the distance from the top of the V-shaped positioning slider 14 to the center of the ear is calculated, followed by the distance from the center of the boring bar to the top of the V-shaped positioning slider 14. Subtracting the distance from the center of the boring bar to the top of the V-shaped positioning slider 14 from the distance from the top of the V-shaped positioning slider 14 to the center of the ear allows for the determination of whether the V-shaped positioning slider 14 moves up or down, thus determining its position.) During the processing of the same batch of leaf springs, if the V-shaped positioning slider 14 remains stationary, the lower support column 15 must move upwards to push the ear tightly against the inner wall of the V-shaped positioning slider 14.

[0019] A foot switch is provided at the bottom of the boring machine base 3, and the foot switch is electrically connected to the clamping cylinder 25.

[0020] like Figure 4 As shown, a photoelectric switch is provided at the bottom of the clamping movable block 26. The connecting cylinder 17 is electrically connected to the photoelectric switch and the foot switch respectively. During use, when the leaf spring arm is above the clamping movable block 26 and the photoelectric switch detects the movement, it cooperates with the foot switch to control the connecting cylinder 17 to complete the ear fixing. This can effectively prevent the connecting cylinder 17 from malfunctioning and causing the lower support column 15 to collide with the boring tool.

[0021] In the use of this invention: First, the difference needs to be calculated based on the outer diameter of the leaf spring lug, the diameter of the boring tool, and the height of the V-shaped positioning slider 14. The V-shaped positioning slider 14 is then pushed to a suitable position by turning the adjusting screw 13. The top height of the support slide plate 14 and the air pressure of the lifting cylinder 103 are adjusted according to the curvature and weight of the leaf spring. The center positioning screw 23 is rotated via the crank handle 22 according to the length of the leaf spring, thereby controlling the clamping support plate 24 to move to a suitable position. During use, the leaf spring arm is placed inside the clamping movable block 26, with the leaf spring lug positioned between the lower support column 15 and the V-shaped positioning slider 14. Stepping on the foot switch activates the photoelectric switch at the bottom of the clamping movable block 26. When the photoelectric switch detects the leaf spring, it controls the connecting cylinder 17 to start and push the lower support column 15 upwards, causing the lug to press tightly against the inner wall of the V-shaped positioning slider 14. Due to the special structure of the V-shaped positioning slider 14, the lower support column 15 pushes the lug upwards and... During the engagement process, the V-shaped positioning slider 14 can automatically position the spring. Simultaneously, the supporting slide plate 104 ensures more thorough contact between the outer wall of the spring ear and the inner wall of the V-shaped positioning slider 14. A foot switch controls the clamping cylinder 25 to activate and push the clamping block 26 to clamp the leaf spring arm, preventing wobbling during the boring process. Then, the boring machine 4 is activated, and the boring tool performs the boring operation on the spring ear. After boring, stepping on the foot switch activates the connecting cylinder 17, pulling the lower support column 15 downwards, while simultaneously activating the clamping cylinder 25 to pull the clamping block 26 to separate and remove the leaf spring. In summary, this invention has the advantages of simple structure, ease of use, automatic fixation of the leaf spring ear and leaf spring arm during leaf spring processing to prevent wobbling during boring and subsequent dimensional deviations, saving manpower and resources, improving production efficiency, and achieving higher precision during boring.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this invention and not to limit it. Although the invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this invention without departing from the spirit and scope of the invention, and all such modifications and substitutions should be covered within the scope of the claims of this invention.

Claims

1. A fixing device for boring and fixing the lugs of automotive leaf springs, comprising a machining device body (0), wherein a boring machine base (3) is provided at the bottom of the machining device body (0), a boring machine machining base (4) is provided at the upper left end of the boring machine base (3), and a machining shaft is provided at the front end of the boring machine machining base (4), characterized in that: A leaf spring lug fixing device (1) is provided in front of the boring machine base (4), and a leaf spring arm clamping device (2) is provided on the right side of the leaf spring lug fixing device (1). The leaf spring coiling ear fixing device (1) has a side wall plate (101) at the bottom, a support plate (16) at the upper end of the side wall plate (101), a connecting rear side wall plate (11) at the upper end of the rear end of the support plate (16), a positioning block (12) at the top of the connecting rear side wall plate (11), an adjusting screw (13) at the upper end of the middle of the positioning block (12), a V-shaped positioning slider (14) below the adjusting screw (13), and a V-shaped positioning slider (14) directly below the V-shaped positioning slider (14). A lower support column (15) is provided, and the bottom of the lower support column (15) passes through the support plate (16) and is connected to the connecting cylinder (17). The connecting cylinder (17) is located above the support base plate (18). A slide rail is provided on the right side wall of the side wall plate (101). A sliding block (102) is located outside the slide rail and is connected to the slide rail. A support slide plate (104) is connected to the right side of the sliding block (102). A lifting cylinder (103) is connected to the bottom of the support slide plate (104). The leaf spring arm clamping device (2) is provided with a clamping base plate (20) at the bottom, and a linear slide rail (21) is provided at the upper end of the clamping base plate (20). The bottom of the clamping support plate (24) is connected to the linear slide rail (21). The upper end of the clamping support plate (24) is provided with a clamping cylinder (25). A clamping movable block (26) is connected to the rear side of the clamping cylinder (25). A center positioning screw (23) is provided above the middle part of the clamping base plate (20). A fixing nut seat is provided at the bottom of the clamping support plate (24) and is sleeved on the outside of the center positioning screw (23) and connected to the center positioning screw (23). A rocker handle (22) is connected to the right side of the center positioning screw (23).

2. The fixing device for boring and fixing holes in automotive leaf spring coils according to claim 1, characterized in that, The connecting rear side wall plate (11) has a strip hole, and the protrusion on the rear side wall of the V-shaped positioning slider (14) is located in the strip hole and is connected with the connecting screw.

3. The fixing device for boring and fixing holes in automotive leaf spring coils according to claim 1, characterized in that, The positioning block (12) is fixedly connected to the rear side wall plate (11), and the bottom of the adjusting screw (13) passes through the positioning block (12) and contacts the top of the V-shaped positioning slider (14).

4. The fixing device for boring and fixing holes in automotive leaf spring coils according to claim 3, characterized in that, The vertical center line of the V-shaped positioning slider (14) is aligned with the center line of the boring tool.

5. The fixing device for boring and fixing holes in automotive leaf spring coils according to claim 1, characterized in that, The boring machine base (3) is equipped with a foot switch at the bottom, and the foot switch is electrically connected to the clamping cylinder (25).

6. The fixing device for boring and fixing holes in automotive leaf spring coil ears according to claim 1, characterized in that, The bottom of the clamping movable block (26) is equipped with a photoelectric switch, and the connecting cylinder (17) is electrically connected to the photoelectric switch and the foot switch respectively.

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