Automobile elastic retaining ring shape correction method and device

Abstract

The present invention belongs to the field of automobile elastic retaining rings, and specifically relates to a method and device for calibrating automobile elastic retaining rings, which is characterized in that the calibrating operation of the automobile elastic retaining ring is completed by alternately trimming the spiral deformation and diameter deviation of the automobile elastic retaining ring, and the specific operation steps are as follows: 1) Put the elastic retaining ring on the workbench, so that the positioning pressing block is turned over and presses the lower end A of the opening of the elastic retaining ring; operate the pitch elimination pressing mechanism to make the elastic retaining ring twist downward with the lower end A of the opening as the axis; 2) Make the diameter calibrating pressing block turn over and press the elastic retaining ring, and operate the diameter adjustment pressing mechanism to make the upper end B of the opening of the elastic retaining ring deform downward and outward; 3) Step 1) and step 2) are performed alternately until the shape and size of the elastic retaining ring are qualified, and the calibrating operation is completed. Compared with the prior art, the beneficial effects of the present invention are: the single machine eliminates deformation, successfully solves the industry problem of inconsistent diameter size after product molding, and greatly reduces the process setting and labor costs.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile elastic retaining ring manufacturing, and in particular relates to an automobile elastic retaining ring shape correction method and a device thereof. Background Art

[0002] The car wheel consists of four parts: rim, retaining ring, spoke and tire. Except for the tire, the other three parts are all metal parts, which are the skeleton of the whole wheel. Their quality directly affects the stability and safety of the car on the road. The retaining ring is also called "elastic retaining ring". Its main purpose is to block the tire and prevent it from falling off. The main models are 8.5, 7.5, 7.0, 6.5, 5.5, etc. They are installed on different models of cars according to the size of the model. The large value is used on the truck, and the small value is used on the small-load truck or light truck and agricultural vehicle.

[0003] The manufacturing process of elastic retaining rings is divided into several processes: rolling, coiling, shearing, leveling, notching, punching long holes, finishing, grinding, pickling, and painting. Rolling is rolling steel, which is to roll the steel billet into the shape of the required model through a rolling mill; coiling is to roll the rolled straight steel into a spiral circle, and the size of the circle of different models is also different; shearing is to cut multiple elastic retaining rings connected together into single ones; leveling is to eliminate the spiral opening of each elastic retaining ring; notching and punching long holes are to punch grooves and holes on the retaining ring, which is done to facilitate the installation of tire valves; finishing is the most important step in the entire process; the last step is grinding, descaling, and painting. These three steps are to achieve the beauty, corrosion resistance and durability of the wheel during use.

[0004] Since the elastic retaining ring is made of straight steel bars through a continuous spiral rolling machine, each elastic retaining ring will produce a spiral and a pitch. After shearing, it must be shaped before entering the shaping mold for forming. However, general leveling equipment cannot eliminate the diameter inconsistency caused by the torsional deformation of the spiral and the pitch, which leads to inconsistent diameters of the final molded product. It often needs to be shaped again, affecting production efficiency and qualified product rate. Summary of the invention

[0005] The purpose of the present invention is to provide a method and device for correcting the shape of an automobile elastic retaining ring, which overcomes the shortcomings of the prior art, operates continuously with a single machine, can accurately eliminate the spiral and pitch of a single elastic retaining ring cut off, completely eliminate spiral deformation, and solve the problem of inconsistent diameter size of the product after molding.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions:

[0007] The first object of the present invention is a method for correcting the shape of an automobile elastic retaining ring, characterized in that the shape correction operation of the automobile elastic retaining ring is completed by alternately correcting the spiral deformation and diameter deviation of the automobile elastic retaining ring, and the specific operation steps are as follows:

[0008] 1) Place the circlip on the workbench, align the lower end A of the circlip opening with the positioning press block, and flip the positioning press block to press the lower end A of the circlip opening to achieve positioning and limiting; operate the pitch-eliminating pressing mechanism to move downward to twist the circlip downward with the lower end A of the opening as the axis until the action point of the circlip reaches the limit adjustment column below the pitch-eliminating pressing mechanism;

[0009] 2) Turn the diameter correction pressing block over to press the elastic retaining ring, operate the diameter adjustment pressing mechanism to start moving downward and outward, so that the high end B of the opening of the elastic retaining ring is deformed downward and outward until the action point of the elastic retaining ring reaches the limit adjustment column below the diameter adjustment pressing mechanism;

[0010] 3) Steps 1) and 2) are performed alternately until the shape and size of the circlip match the groove for correcting the diameter deformation of the circlip, so that the diameter correction pressing block and the positioning pressing block are flipped in reverse order, the circlip is released, and the circlip is manually removed to complete the correction operation.

[0011] Furthermore, the automobile elastic retaining ring is firstly made by rolling a straight steel bar into a spiral ring, and then shearing to form an automobile elastic retaining ring with spiral deformation and diameter deviation.

[0012] Furthermore, the action direction of the diameter-adjusting pressing mechanism is perpendicular to the action point of the elastic retaining ring.

[0013] Furthermore, the diameter correction pressing blocks include 1 to 3 locations, which are respectively located at any position of 45±5°, 75±5°, and 105±5° from the lower end to the higher end of the elastic retaining ring opening on the workbench.

[0014] Furthermore, the pitch-eliminating pressing mechanism is located above a position of 180±10° in the direction from the lower end of the elastic retaining ring opening to the higher end.

[0015] Furthermore, the diameter adjusting pressing mechanism is located above a position of 300±10° from the lower end of the elastic retaining ring opening in the direction toward the higher end.

[0016] Furthermore, in the step 1), the action distance of the pitch-eliminating pressing mechanism is 50-150 mm.

[0017] Furthermore, in the step 2), the action distance of the diameter adjustment pressing mechanism is 30-120 mm.

[0018] Furthermore, the grooves are distributed within a range of 0 to 150 degrees from the high end to the low end of the elastic retaining ring opening.

[0019] The second object of the present invention is to provide a shape correction device for an automobile elastic retaining ring, characterized in that it comprises a workbench, a column, a cantilever, a positioning press block, a diameter correction press block, a pitch elimination pressing mechanism and a diameter adjustment pressing mechanism, wherein the column is fixedly mounted on the ground, the cantilever is connected to the column, and the pitch elimination pressing mechanism and the diameter adjustment pressing mechanism are respectively arranged at the ends of the cantilever;

[0020] When the elastic retaining ring to be leveled is placed on the workbench, the positioning press block corresponds to the lower end A of the opening of the positioning elastic retaining ring, and the diameter correction press block corresponds to any position of 45±5°, 75±5°, and 105±5° from the lower end of the opening of the positioning elastic retaining ring to the higher end;

[0021] The pitch elimination pressing mechanism is located above the position of 180±10° from the lower end A of the opening of the elastic retaining ring to the higher end B, and the diameter adjustment pressing mechanism is located above the position of 300±10° from the lower end A of the opening of the elastic retaining ring to the higher end B;

[0022] Position limiting adjustment columns are respectively arranged below the pitch eliminating pressing mechanism and the diameter adjusting pressing mechanism, and the height of the position limiting adjustment columns is adjustable.

[0023] Compared with the prior art, the beneficial effects of the present invention are: 1) single-machine programmed continuous operation, reasonable structure, simple manufacturing, and strong practicality; 2) a single machine completes the correction of the spiral and pitch of the elastic retaining ring, completely eliminating spiral deformation, easy operation, and successfully solves the industry problem of inconsistent diameter size after product molding, with high operating efficiency and can greatly reduce process settings and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an embodiment of the present invention.

[0025] Figure 2 yes Figure 1 Middle top view.

[0026] Figure 3 It is a schematic diagram of an embodiment of a pressing block of the present invention.

[0027] Figure 4 It is a schematic diagram of the action of the pressing block of the present invention.

[0028] In the figure: 1-working table, 2-column, 3-cantilever, 4-pitch elimination pressing mechanism, 5-diameter adjustment pressing mechanism, 6-elastic retaining ring, 7-limit adjustment column, 8-low point positioning pressing block, 9-diameter correction pressing block one, 10-diameter correction pressing block two, 11-diameter correction pressing block three, 12-groove, 13-linking rod, 14-driver, 15-presser foot, 16-limit block, 17-fixed seat, 18-spring, 19-rotating shaft. DETAILED DESCRIPTION

[0029] The preparation method of the present invention is further described below in conjunction with embodiments:

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See Figure 1 , Figure 2 , is a schematic diagram of the structure of an embodiment of the automobile circlip shaping device of the present invention, comprising a workbench 1, a column 2, and a cantilever 3, wherein the column 2 is fixedly mounted on the ground, the cantilever 3 is connected to the column 2, the pitch elimination pressing mechanism 4 and the diameter adjustment pressing mechanism 5 are respectively arranged at the ends of the cantilever, and the circlip 6 to be leveled is placed on the workbench 1, the pitch elimination pressing mechanism 4 is located above the position of 180° from the lower end A of the circlip opening to the higher end B, and the diameter adjustment pressing mechanism 5 is located above the position of 300° from the lower end A of the circlip opening to the higher end B. In order to control the pressing amount, limit adjustment columns 7 are respectively arranged below the pitch elimination pressing mechanism 4 and the diameter adjustment pressing mechanism 5.

[0032] A pressing mechanism is provided on the workbench 1, including a low point positioning pressing block 8 and a diameter correction pressing block 1 9, a diameter correction pressing block 2 10, a diameter correction pressing block 3 11, a connecting rod 13 and a driver 14. The driver 14 is a cylinder, and the connecting rod 13 is an arc-shaped step shape, wherein the high-order part is connected to the low point positioning pressing block 8, and the low-order part is connected to the diameter correction pressing block 1 9, the diameter correction pressing block 2 10 and the diameter correction pressing block 3 11. The output force of the driver 14 acts on the bottom of the connecting rod 13. When the driver 14 pushes the connecting rod 13 to reach the set position 1, the high-order part first touches the low point positioning pressing block 8 to flip and press the open lower end A of the elastic retaining ring, thereby positioning the elastic retaining ring. When the driver 14 continues to push the linkage rod 13 to reach the set position 2, the low-order part triggers the diameter correction pressing block 1 9, the diameter correction pressing block 2 10 and the diameter correction pressing block 3 11 to flip and press the elastic retaining ring, thereby further fixing the elastic retaining ring.

[0033] In the embodiment, there are three diameter correction pressing blocks, namely diameter correction pressing block 1 9, diameter correction pressing block 2 10 and diameter correction pressing block 3 11, which are respectively distributed at 45°, 75° and 105° positions from the workbench plate in the direction from the lower end A to the higher end B of the elastic retaining ring opening; in order to ensure the correction of the pitch and radius of the elastic retaining ring respectively, the action direction of the pitch elimination pressing mechanism 4 is perpendicular to the ground, and the action direction of the diameter adjustment pressing mechanism 5 is perpendicular to the action point of the elastic retaining ring, and the pitch elimination pressing mechanism and the diameter adjustment pressing mechanism act alternately and cyclically according to the program.

[0034] The workbench 1 is provided with a groove 12 for limiting the deformation of the diameter of the elastic retaining ring. The groove 12 is distributed in the range of 0-150° from the high end B of the elastic retaining ring opening to the low end A. The shape and position of the groove 12 match the final leveling size of the high end side of the elastic retaining ring opening, thereby eliminating the problem of inconsistent diameter caused by the torsional deformation and pitch of the spiral, so that the diameter of the final formed product remains consistent.

[0035] See Figure 3 , Figure 4 , is a schematic diagram of an embodiment of a press block of the present invention. The low-point positioning press block and the diameter correction press block of the present invention both include a presser foot 15, a limit block 16, a fixing seat 17 and a spring 18. The presser foot 15 is L-shaped, and the presser foot 15 is connected to the fixing seat 17 via a rotating shaft 19. The limit block 16 is arranged on the back side of the presser foot 15, and the limit block 16 and the presser foot 15 are connected via a spring 18. When the limit block 16 moves up and down along the back side of the presser foot 15 under the pull of the linkage rod 13, the presser foot 15 flips around the rotating shaft 19 to respectively realize pressing and releasing.

[0036] In the embodiment, the pitch eliminating pressing mechanism 4 and the diameter adjusting pressing mechanism 5 are preferably cylinders, but any one of a hydraulic cylinder or a linear motor can also be selected to achieve the technical purpose of the present invention.

[0037] The working process of the present invention is as follows: 1) put the elastic circlip 6 with spiral and pitch deformation on the workbench 1, align the open lower end A of the elastic circlip with the low point positioning press block 8, the driver 14 pushes the linkage rod 13 upward to the set position 1, and the low point positioning press block 8 turns over and presses the open lower end A of the elastic circlip to achieve positioning and limiting; the pitch elimination pressing mechanism 4 moves downward to make the elastic circlip 6 twist downward with the open lower end A as the axis until the action point of the elastic circlip 6 reaches the limit adjustment column 7 below the pitch elimination pressing mechanism 4. The purpose of step 1) is to eliminate spiral torsional deformation.

[0038] 2) The driver 14 pushes the linkage rod 13 to continue to move upward to the set position 2, so that the diameter correction pressing block 1 9, the diameter correction pressing block 2 10 and the diameter correction pressing block 3 11 are turned over and press the elastic retaining ring 6, and the diameter adjustment pressing mechanism 5 starts to move downward and outward, so that the high end B of the elastic retaining ring opening is deformed downward and outward until the action point of the elastic retaining ring reaches the limit adjustment column 7 below the diameter adjustment pressing mechanism 5. The purpose of step 2) is to eliminate the problem of inconsistent pitch and diameter of the retaining ring.

[0039] It should be noted that the diameter adjustment pressing mechanism 5 is pressed down at a vertical angle relative to the elastic retaining ring, and the purpose is to adjust the deformation of the elastic retaining ring in the diameter direction, so that the diameter of the elastic retaining ring opening high end B and the elastic retaining ring opening low end A can be consistent. The present invention completes the shape correction work by continuously adjusting step 1) and step 2) alternately. When the shape and size of the elastic retaining ring match the groove 12, it means that the size is qualified. The driver 14 drives the linkage rod 13 downward, so that the diameter correction pressing block 1 9, the diameter correction pressing block 2 10 and the diameter correction pressing block 3 11 and the low point positioning pressing block 8 are reversed successively, and the elastic retaining ring is released, and the elastic retaining ring is manually removed.

[0040] The height of the limit adjustment column 7 can be adjusted up and down, the purpose is to achieve the ideal effect after eliminating the spiral and pitch, to prevent the occurrence of no elimination and over elimination, the action distance of the pitch elimination pressing mechanism is 50~150mm. The action distance of the diameter adjustment pressing mechanism is 30~120mm, which is achieved by adjusting the height of each limit adjustment column.

[0041] The embodiments described above are only specific examples selected to illustrate the purpose, technical solutions and beneficial effects of the present invention in detail, but should not limit the scope of protection of the present invention. All modifications, equivalent substitutions and improvements made without violating the spirit and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A method for correcting the shape of an automobile elastic retaining ring, characterized in that: The shaping operation of the automotive elastic retaining ring is completed by alternately trimming the spiral deformation and diameter deviation of the automotive elastic retaining ring. The specific operation steps are as follows: 1) Place the circlip on the workbench, align the lower end A of the circlip opening with the positioning press block, and flip the positioning press block to press the lower end A of the circlip opening to achieve positioning and limiting; operate the pitch-eliminating pressing mechanism to move downward to twist the circlip downward with the lower end A of the opening as the axis until the action point of the circlip reaches the limit adjustment column below the pitch-eliminating pressing mechanism; 2) Turn the diameter correction pressing block over to press the elastic retaining ring, operate the diameter adjustment pressing mechanism to start moving downward and outward, so that the high end B of the opening of the elastic retaining ring is deformed downward and outward until the action point of the elastic retaining ring reaches the limit adjustment column below the diameter adjustment pressing mechanism; 3) Steps 1) and 2) are performed alternately until the shape and size of the circlip match the groove for correcting the diameter deformation of the circlip, so that the diameter correction pressing block and the positioning pressing block are flipped in reverse order, the circlip is released, and the circlip is manually removed to complete the correction operation.

2. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The automobile elastic retaining ring is firstly rolled into a spiral ring by rolling a straight steel bar, and then sheared to form an automobile elastic retaining ring with spiral deformation and diameter deviation.

3. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The action direction of the diameter adjusting and pressing mechanism is perpendicular to the action point of the elastic retaining ring.

4. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The diameter correction pressing blocks include 1 to 3 locations, which are respectively located at any position of 45±5°, 75±5°, and 105±5° from the lower end to the higher end of the elastic retaining ring opening on the workbench.

5. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The pitch-eliminating pressing mechanism is located above a position 180±10° from the lower end of the elastic retaining ring opening toward the higher end.

6. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The diameter adjusting pressing mechanism is located above a position 300±10° from the lower end of the elastic retaining ring opening to the higher end.

7. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: In the step 1), the action distance of the pitch-eliminating pressing mechanism is 50-150 mm.

8. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: In the step 2), the action distance of the diameter adjustment pressing mechanism is 30-120 mm.

9. The method for calibrating the shape of an automobile elastic retaining ring according to claim 1, characterized in that: The grooves are distributed in the range of 0 to 150 degrees from the high end to the low end of the elastic retaining ring opening.

10. Automobile elastic retaining ring correction device, characterized in that: It includes a workbench, a column, a cantilever, a positioning press block, a diameter correction press block, a pitch elimination pressing mechanism and a diameter adjustment pressing mechanism. The column is fixedly installed on the ground, the cantilever is connected to the column, and the pitch elimination pressing mechanism and the diameter adjustment pressing mechanism are respectively arranged at the ends of the cantilever; When the elastic retaining ring to be leveled is placed on the workbench, the positioning press block corresponds to the lower end A of the opening of the positioning elastic retaining ring, and the diameter correction press block corresponds to any position of 45±5°, 75±5°, and 105±5° from the lower end of the opening of the positioning elastic retaining ring to the higher end; The pitch elimination pressing mechanism is located above the position of 180±10° from the lower end A of the opening of the elastic retaining ring to the higher end B, and the diameter adjustment pressing mechanism is located above the position of 300±10° from the lower end A of the opening of the elastic retaining ring to the higher end B; Position limiting adjustment columns are respectively arranged below the pitch eliminating pressing mechanism and the diameter adjusting pressing mechanism, and the height of the position limiting adjustment columns is adjustable.

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