Accurate positioning stamping device for side hole of oil seal cover

Abstract

The utility model discloses a kind of oil seal cover side hole precision positioning stamping device, including workbench, positioning mechanism being set on workbench and the stamping mechanism being located just above positioning mechanism, the positioning mechanism includes main positioning seat, a pair of V-shaped groove positioning block for clamping from both sides and accurately positioning the radial position of oil seal cover and axial positioning baffle for limiting the axial displacement of oil seal cover, the main positioning seat is fixedly installed on the upper surface of workbench, the V-shaped groove positioning block is symmetrically set in the both sides of main positioning seat and fixed on workbench, the axial positioning baffle is set in the side rear of main positioning seat and fixed on workbench.This oil seal cover side hole precision positioning stamping device solves the accurate positioning problem of cylindrical workpiece side hole machining through multiple positioning systems, combined with floating guide stamping mechanism and automatic auxiliary function, high-precision, high-efficiency, high-reliability and low-maintenance cost side hole stamping machining are realized.

Description

Technical Field

[0001] This utility model relates to the field of stamping device technology, specifically to a stamping device for precise positioning of the side hole of an oil seal cover. Background Technology

[0002] In the field of machining, oil seal caps are important sealing components, and the machining accuracy of their sidewall holes directly affects sealing performance and assembly precision. Traditional oil seal cap sidehole stamping devices generally suffer from problems such as insufficient positioning accuracy, low automation, and poor reliability: On the one hand, radial positioning using a single plane or simple positioning block makes it difficult to achieve precise alignment between the workpiece's central axis and the stamping head, resulting in large positional errors in the side holes. Furthermore, axial limiting is mostly rigid contact, which is prone to scratches or positioning misalignment due to workpiece collisions. On the other hand, the stamping mechanism lacks floating guide compensation, has poor adaptability to dimensional tolerances in the workpiece height direction, and rigid impacts can easily cause die wear or workpiece deformation. At the same time, the unloading process relies on manual operation, which is inefficient, and the accumulation of waste material can easily affect the continuity of processing. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a precise positioning stamping device for the side hole of an oil seal cover, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A precision positioning stamping device for the side hole of an oil seal cover includes a worktable, a positioning mechanism disposed on the worktable, and a stamping mechanism located directly above the positioning mechanism. The positioning mechanism includes a main positioning seat, a pair of V-groove positioning blocks for clamping and precisely positioning the radial position of the oil seal cover from both sides, and an axial positioning baffle for limiting the axial displacement of the oil seal cover. The main positioning seat is fixedly installed on the upper surface of the worktable. The V-groove positioning blocks are symmetrically disposed on both sides of the main positioning seat and fixed on the worktable. The axial positioning baffle is disposed on the rear side of the main positioning seat and fixed on the worktable.

[0006] The stamping mechanism includes a fixed bracket spanning above the worktable, a power unit mounted on the top of the fixed bracket, a floating guide unit, a stamping head mounting seat, and a side stamping head assembly. The side stamping head assembly is fixedly mounted on the side of the stamping head mounting seat, and the floating guide unit is connected to the lower end of the output shaft of the power unit.

[0007] As a further description of the above technical solution, the side punching head assembly includes at least one punch, the axis of which is perpendicular to the axis of the oil seal cover and points to the position of the side hole to be processed on the oil seal cover.

[0008] As a further description of the above technical solution, the floating guide unit also includes a guide sleeve, a guide post slidably sleeved in the guide sleeve, a preload spring disposed between the guide sleeve and the guide post, and a limiting structure, wherein the preload spring causes the guide post to have a downward extension tendency.

[0009] As a further description of the above technical solution, the main positioning seat has an arc-shaped positioning surface that matches the outer circumferential surface of the oil seal cover. A wear-resistant bushing is embedded in the inner side of the arc-shaped positioning surface of the main positioning seat. The curvature of the wear-resistant bushing matches the outer circumference of the oil seal cover. The V-shaped opening of the V-groove positioning block faces the main positioning seat. The axis of symmetry of the V-groove positioning block is coplanar with the central axis of the arc-shaped positioning surface, and its front end face is perpendicular to the axial direction of the oil seal cover.

[0010] As a further description of the above technical solution, an elastic buffer pad is provided on the front end surface of the axial positioning baffle.

[0011] As a further description of the above technical solution, the side stamping head assembly also includes a quick-change sleeve, through which the punch is detachably mounted on the stamping head mounting base.

[0012] As a further description of the above technical solution, the workbench is provided with a discharge hole for discharging waste material after stamping, and the discharge hole is located below the positioning mechanism.

[0013] As a further description of the above technical solution, it also includes a pushing mechanism set on the worktable, the pushing mechanism including a cylinder or a hydraulic cylinder and a pushing rod connected to the front end of its piston rod, the pushing rod being used to push the completed punched oil seal cover out of the main positioning seat.

[0014] As a further description of the above technical solution, the limiting structure is used to limit the maximum stroke of the guide post relative to the guide sleeve. The limiting structure is composed of a flange provided at the upper end of the guide post and a stepped surface provided at the corresponding position on the inner wall of the guide sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The present invention provides a precision positioning stamping device for the side hole of an oil seal cover, which has at least one of the following beneficial effects during use:

[0017] The positioning mechanism uses an arc-shaped positioning surface and a V-groove positioning block to achieve automatic radial calibration of the oil seal cover using the principle of geometric centering. This results in high positioning accuracy, a significant improvement over traditional positioning methods. An axial elastic buffer limit structure eliminates rigid impacts, preventing scratches on the workpiece end face and ensuring axial stability. This precise positioning stamping device for the side holes of the oil seal cover solves the problem of precise positioning in the machining of side holes in cylindrical workpieces through a positioning system of "V-groove + arc-shaped main seat + axial baffle." Combined with a floating guide stamping mechanism and automated auxiliary functions (unloading and pushing), it achieves high-precision, high-efficiency, high-reliability, and low-maintenance side hole stamping. It fully considers positioning principles, mechanical properties, wear resistance, operability, and automation requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a precision positioning stamping device for the side hole of an oil seal cover according to the present invention;

[0019] Figure 2 This is a side view of the stamping device for precise positioning of the side hole of an oil seal cover according to the present invention.

[0020] Figure 3 This is a first perspective structural schematic diagram of a stamping device for precise positioning of the side hole of an oil seal cover according to the present invention;

[0021] Figure 4 This is a second perspective structural diagram of a stamping device for precise positioning of the side hole of an oil seal cover according to the present invention.

[0022] Numbering on the map:

[0023] 1. Workbench; 101. Fixed bracket; 102. Floating guide unit; 103. Limiting structure; 104. Guide sleeve; 105. Guide column; 106. Preload spring; 2. Positioning mechanism; 201. Main positioning seat; 202. V-groove positioning block; 203. Arc-shaped positioning surface; 204. Material dropping hole; 205. Pushing mechanism; 3. Stamping mechanism; 301. Power unit; 302. Stamping head mounting seat; 303. Side stamping head assembly; 304. Quick-change sleeve; 305. Punch. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4As shown, this utility model provides a precision positioning stamping device for the side hole of an oil seal cover, including a worktable 1, a positioning mechanism 2 disposed on the worktable 1, and a stamping mechanism 3 located directly above the positioning mechanism 2. The positioning mechanism 2 includes a main positioning seat 201, a pair of V-groove positioning blocks 202 for clamping and precisely positioning the radial position of the oil seal cover from both sides, and an axial positioning baffle for limiting the axial displacement of the oil seal cover. The main positioning seat 201 is fixedly installed on the upper surface of the worktable 1. The V-groove positioning blocks 202 are symmetrically disposed on both sides of the main positioning seat 201 and fixed on the worktable 1. The axial positioning baffle is disposed on the rear side of the main positioning seat 201 and fixed on the worktable 1.

[0026] In this embodiment, during use, the oil seal cap is placed on the arc-shaped positioning surface 203 of the main positioning base 201. This positioning surface perfectly matches the outer circumferential surface of the oil seal cap, forming initial circumferential support. The V-shaped groove positioning blocks, symmetrically arranged on both sides, have their V-shaped openings facing the main positioning base 201, and their axis of symmetry is coplanar with the central axis of the arc-shaped positioning surface 203. When the oil seal cap contacts the V-shaped groove, the inclined surfaces on both sides of the V-shaped structure force the center of the oil seal cap to automatically align with the central axis of the main positioning base 201 through clamping force, achieving high-precision radial positioning.

[0027] An axial positioning baffle is located on the rear side of the main positioning seat 201, with its front end face perpendicular to the axis of the oil seal cover. When the workpiece is placed, its rear end fits against the baffle, and in conjunction with the compressive reaction force of the elastic buffer pad, axial positioning is achieved. The elastic deformation of the buffer pad can absorb the impact force when placing the workpiece, and the preload can ensure the axial position stability of the workpiece, preventing axial movement during stamping.

[0028] The stamping mechanism 3 includes a fixed bracket 101 spanning above the workbench 1, a power unit 301 mounted on the top of the fixed bracket 101, a floating guide unit 102, a stamping head mounting seat 302, and a side stamping head assembly 303. The side stamping head assembly 303 is fixedly mounted on the side of the stamping head mounting seat 302, and the floating guide unit 102 is connected to the lower end of the output shaft of the power unit 301.

[0029] In this embodiment, the power unit 301 (such as a hydraulic cylinder or pneumatic cylinder) drives the guide sleeve 104 to move downwards, and the guide post 105 remains in contact with the workpiece surface under the action of the preload spring 106. When there is a slight deviation in the height direction of the workpiece, the guide post 105 can slide within the guide sleeve 104, achieving flexible contact through the spring preload, thus avoiding positioning offset caused by rigid impact. The limiting structure 103 (flange and stepped surface engagement) limits the maximum stroke of the guide post 105 to prevent excessive downward pressure from damaging the mold.

[0030] The side punch assembly 303 moves synchronously with the punch mounting base 302, and the axis of the punch 305 is perpendicular to the axis of the oil seal cover and precisely aligned with the position of the side hole to be processed. When the punch 305 contacts the workpiece, the instantaneous impact force provided by the power unit 301 is transmitted through the punch 305, punching out the required hole diameter on the side wall of the oil seal cover. Scrap material is directly discharged through the discharge hole 204 under the worktable 1, avoiding the accumulation of scrap material that may affect subsequent processing.

[0031] Furthermore, the side punch assembly 303 includes at least one punch 305, the axis of which is perpendicular to the axis of the oil seal cover and points towards the position of the side hole to be processed on the oil seal cover. It is fixedly mounted on the side of the punch head mounting base 302. It includes at least one punch 305, whose axis is strictly perpendicular to the axis of the oil seal cover and precisely points to the designed position of the side hole to be processed on the oil seal cover. The vertical axis of the punch 305 and its pointing towards the target point ensure that the punching direction meets the design requirements. The punch 305 is detachably mounted on the mounting base via a quick-change sleeve 304.

[0032] Furthermore, the floating guide unit 102 also includes a guide sleeve 104, a guide post 105 slidably sleeved within the guide sleeve 104, a preload spring 106 disposed between the guide sleeve 104 and the guide post 105, and a limiting structure 103. The preload spring 106 causes the guide post 105 to tend to extend downwards. The preload spring 106 ensures that the stamping head mounting base 302 and the side stamping head assembly 303 gently and continuously contact the outer wall of the oil seal cover in the initial state (before the power unit 301 is fully pressed down). This ensures that the workpiece is stably pressed onto the positioning mechanism 2 before stamping, eliminating gaps.

[0033] Furthermore, the main positioning seat 201 has an arc-shaped positioning surface 203 that is adapted to the outer circumferential surface of the oil seal cover. A wear-resistant bushing is embedded in the inner side of the arc-shaped positioning surface 203 of the main positioning seat 201. The curvature of the wear-resistant bushing matches the outer circumference of the oil seal cover. The V-shaped opening of the V-groove positioning block 202 faces the main positioning seat 201. The axis of symmetry of the V-groove positioning block 202 is coplanar with the central axis of the arc-shaped positioning surface 203, and its front end face is perpendicular to the axial direction of the oil seal cover.

[0034] The main positioning seat is fixed on the worktable 1 and has an arc-shaped positioning surface 203 that matches the outer circumference of the oil seal cover. It primarily supports the oil seal cover and restricts its radial movement on one side of the main positioning seat 201. The arc-shaped surface provides a larger contact area, distributing the load. The arc-shaped surface allows for quick and approximate positioning of the oil seal cover to its final position. A wear-resistant bushing is embedded inside the arc-shaped surface, its curvature matching that of the oil seal cover. This significantly improves equipment lifespan, reduces wear on the main positioning seat 201, maintains long-term positioning accuracy, protects the workpiece surface from scratches on the outer circumference of the oil seal cover by the hard base, and facilitates maintenance and replacement; only the bushing needs to be replaced after wear.

[0035] Furthermore, an elastic buffer pad is provided on the front end surface of the axial positioning baffle.

[0036] An axial positioning baffle is located on the rear side of the main positioning seat 201 and fixed to the worktable 1. The front end face of the baffle abuts against the end face of the oil seal cover. This ensures that the oil seal cover is fixed in a specific position along the axial direction, preventing it from moving along the axis during stamping. The rear side position facilitates the placement and removal of the workpiece. An elastic buffer pad absorbs impacts, protects the workpiece, provides cushioning during workpiece placement or stamping vibrations, prevents damage (dents, scratches) to the end face of the oil seal cover due to rigid impacts, and reduces noise.

[0037] Furthermore, the side-pumping head assembly 303 also includes a quick-change sleeve 304, through which the punch 305 is detachably mounted on the punching head mounting base 302. This significantly shortens die changeover time, improves production efficiency, and adapts to different hole diameters, hole types, or replacements after wear / damage to the punch 305. Costs are reduced, as only the punch 305 needs to be replaced instead of the entire assembly. It also facilitates the design of multi-punch 305 assemblies (such as punching multiple holes simultaneously or holes at different angles).

[0038] Furthermore, the workbench 1 is equipped with a discharge hole 204 for discharging waste material after stamping. The discharge hole 204 is located below the positioning mechanism 2. The discharge hole 204 enables automatic waste discharge; the round waste material generated during stamping falls directly into the collection container below under gravity. This keeps the work area clean, prevents waste accumulation from affecting positioning accuracy or causing equipment malfunction, and enables continuous operation.

[0039] Furthermore, it also includes a pushing mechanism 205 disposed on the worktable 1. The pushing mechanism 205 includes a cylinder or a hydraulic cylinder and a pushing rod connected to the front end of its piston rod. The pushing rod is used to push the completed punched oil seal cover out of the main positioning seat 201.

[0040] After stamping, the cylinder / hydraulic cylinder of the pusher mechanism 205 actuates, and the piston rod pushes the pusher rod to move along the axis of the oil seal cover, pushing the processed workpiece out from the arc-shaped positioning surface 203 of the main positioning seat 201 and into the unloading groove. This process is linked with the positioning mechanism 2, and the time of a single cycle can be controlled within 5-8 seconds.

[0041] After stamping is completed, the push rod extends and smoothly pushes the oil seal cover out of the main positioning seat 201, realizing automated and unmanned operation, significantly improving production efficiency and operational safety, and reducing workpiece collisions.

[0042] Furthermore, the limiting structure 103 is used to limit the maximum travel of the guide post 105 relative to the guide sleeve 104. The limiting structure 103 is composed of a flange at the upper end of the guide post 105 and a stepped surface at a corresponding position on the inner wall of the guide sleeve 104. The limiting structure 103, composed of the flange at the upper end of the guide post 105 and the stepped surface on the inner wall of the guide sleeve 104, limits the maximum travel of the guide post 105 relative to the guide sleeve 104.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A precision positioning stamping device for the side hole of an oil seal cover, characterized in that: The device includes a worktable, a positioning mechanism mounted on the worktable, and a stamping mechanism located directly above the positioning mechanism. The positioning mechanism includes a main positioning seat, a pair of V-groove positioning blocks for clamping and precisely positioning the radial position of the oil seal cover from both sides, and an axial positioning baffle for limiting the axial displacement of the oil seal cover. The main positioning seat is fixedly mounted on the upper surface of the worktable. The V-groove positioning blocks are symmetrically arranged on both sides of the main positioning seat and fixed on the worktable. The axial positioning baffle is located on the rear side of the main positioning seat and fixed on the worktable. The stamping mechanism includes a fixed bracket spanning above the worktable, a power unit mounted on the top of the fixed bracket, a floating guide unit, a stamping head mounting seat, and a side stamping head assembly. The side stamping head assembly is fixedly mounted on the side of the stamping head mounting seat, and the floating guide unit is connected to the lower end of the output shaft of the power unit.

2. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: The lateral punch assembly includes at least one punch, the axis of which is perpendicular to the axis of the oil seal cap and points to the location of the side hole to be processed on the oil seal cap.

3. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: The floating guide unit also includes a guide sleeve, a guide post slidably sleeved in the guide sleeve, a preload spring and a limiting structure disposed between the guide sleeve and the guide post, wherein the preload spring causes the guide post to have a downward extension tendency.

4. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: The main positioning seat has an arc-shaped positioning surface that matches the outer circumference of the oil seal cover. A wear-resistant bushing is embedded inside the arc-shaped positioning surface of the main positioning seat. The curvature of the wear-resistant bushing matches the outer circumference of the oil seal cover. The V-shaped opening of the V-groove positioning block faces the main positioning seat. The axis of symmetry of the V-groove positioning block is coplanar with the central axis of the arc-shaped positioning surface, and its front end face is perpendicular to the axial direction of the oil seal cover.

5. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: An elastic buffer pad is provided on the front end surface of the axial positioning baffle.

6. The oil seal cover side hole precision positioning stamping device according to claim 2, characterized in that: The lateral punch assembly also includes a quick-change sleeve, through which the punch is detachably mounted on the punch mounting base.

7. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: The workbench is provided with a discharge hole for discharging waste material after stamping, and the discharge hole is located below the positioning mechanism.

8. The oil seal cover side hole precision positioning stamping device according to claim 1, characterized in that: It also includes a pushing mechanism set on the worktable, the pushing mechanism including a cylinder or oil cylinder and a pushing rod connected to the front end of its piston rod, the pushing rod being used to push the completed punched oil seal cover out of the main positioning seat.

9. The oil seal cover side hole precision positioning stamping device according to claim 3, characterized in that: The limiting structure is used to limit the maximum stroke of the guide post relative to the guide sleeve. The limiting structure consists of a flange provided at the upper end of the guide post and a stepped surface provided at the corresponding position on the inner wall of the guide sleeve.

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