A stainless steel rivet processing clamp

Abstract

The utility model discloses a kind of clamps for stainless steel rivet processing, it includes base, the base top is provided with moving assembly, the moving assembly includes worm, worm wheel, screw rod, moving block, workbench and support column, the side wall of the support column is provided with constant-pressure assembly, the constant-pressure assembly includes support rod, rotating shaft, pressure rod, sector gear and driven gear, the circumferential outer wall of the driven gear is provided with adaptive assembly, the adaptive assembly includes rack, adaptive bearing, telescopic link, spring and anvil, this kind of clamp for stainless steel rivet processing, by the precision moving assembly that worm, worm wheel, screw rod and double-row angular contact ball bearing constitute, the problem of repeatedly trial and error, gap and locking displacement when traditional clamp positioning is solved completely, secondly, by disc spring group, adjusting nut and gear transmission mechanism constitute constant-pressure assembly, cooperate adaptive anvil, fundamentally solve the industry problem of poor pressure control.

Description

Technical Field

[0001] This utility model relates to the field of rivet processing technology, specifically a fixture for processing stainless steel rivets. Background Technology

[0002] Stainless steel rivet processing fixtures are devices specifically designed to fix and position stainless steel rivets, ensuring the precise position and stability of the rivets during processing.

[0003] Existing patent document CN221362543U discloses a fixture for processing stainless steel rivets, comprising a base, a support seat fixed to the upper surface of the base, a pressure rod slidably connected to the inner cavity of the support seat, the pressure rod passing through the upper and lower surfaces of the support seat, a handle rotatably connected to the outer surface of the support seat, and a fixing mechanism for moving the pressure rod within the inner cavity of the support seat. The fixing mechanism includes a gear rotatably connected to the inner cavity of the support seat, the gear being fixedly connected to the end of the handle, and a rack on the side of the pressure rod meshing with the gear to press down and clamp the rivet. This solves the problem that workpieces placed in the groove of the fixing rod are restricted, making it difficult to connect workpieces with holes far from the workpiece edge using rivets, resulting in a limited applicability of the rivet fixture.

[0004] While this device offers numerous advantages, it still suffers from the following problems: The pressure depends entirely on the operator's force; insufficient pressure may cause the workpiece to loosen during riveting, resulting in misaligned rivets; excessive pressure may damage the workpiece surface or even deform thin-walled workpieces. The spring force varies with the compression stroke, and individual springs exhibit individual differences, making it impossible to provide a stable and repeatable clamping force. This hinders standardized operations and product quality consistency. Furthermore, there is no reliable quantitative reference for movement; operators must repeatedly try and compare to align the pin with the workpiece hole, a time-consuming and inefficient process. Gaps exist between the sliding pairs, potentially causing slight displacement during locking, leading to inaccurate positioning. This inaccuracy becomes a significant weakness in high-precision riveting operations, impacting product quality. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved: In order to solve the problems of poor control of workpiece clamping force, easy damage to workpiece or insecure fixation, and insufficient position adjustment accuracy and low efficiency, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a fixture for processing stainless steel rivets. Through a precision moving assembly consisting of a worm gear, worm wheel, lead screw, and double-row angular contact ball bearings, it completely solves the problems of repeated trial and error, gaps, and locking displacement in traditional fixtures during positioning. At the same time, through a constant pressure assembly consisting of a disc spring group, adjusting nut, and gear transmission mechanism, in conjunction with an adaptive pressure head, it fundamentally solves the industry problem of poor pressure control.

[0008] 2. Technical Solution: To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A fixture for processing stainless steel rivets includes a base, a movable component on the top of the base, the movable component including a worm gear, a rotating wheel fixedly connected to the side wall of the worm gear, a worm wheel meshing with the outer circumference of the worm gear, a lead screw inserted into the side wall of the worm wheel, a movable block threadedly connected to the outer circumference of the lead screw, a worktable fixedly connected to the top of the movable block, a support column fixedly connected to the top of the base, and a constant pressure component provided on the side wall of the support column; The constant pressure component includes a support rod, a rotating shaft is inserted into the side wall of the support rod, a pressure rod is sleeved on the outer circumference of the rotating shaft, a sector gear is sleeved on the outer circumference of the rotating shaft, a driven gear is meshed on the outer circumference of the sector gear, and an adaptive component is provided on the outer circumference of the driven gear. The adaptive component includes a rack, a mounting base is fixedly connected to the bottom of the rack, an adaptive bearing is fixedly connected to the inner circumference of the mounting base, a connecting rod is inserted into the inner circumference of the adaptive bearing, a telescopic rod is fixedly connected to the bottom of the connecting rod, a boss is integrally formed at the bottom of the telescopic rod, a spring is fixedly connected to the top of the boss, the top of the spring is in close contact with the connecting rod, and a pressure head is welded to the bottom of the boss.

[0009] As a preferred embodiment of the stainless steel rivet processing fixture of this utility model, the top of the base is provided with multiple guide grooves, the bottom of the base is fixedly connected with a support block, and the lead screw is inserted into the side wall of the support block.

[0010] In a preferred embodiment of the stainless steel rivet processing fixture of this utility model, both ends of the worm gear are tightly attached to bearing seats, the side wall of the bearing seats is fixedly connected to a mounting box, and the worm is inserted into the inner side wall of the mounting box.

[0011] As a preferred embodiment of the stainless steel rivet processing fixture of this utility model, the top of the workbench is provided with multiple positioning holes, and the bottom of the workbench is integrally formed with multiple slide bars, the bottom of the slide bars being slidably connected to the guide groove.

[0012] In a preferred embodiment of the stainless steel rivet processing fixture of this utility model, the side wall of the support column is provided with a connection port, the inner side wall of the connection port is fixedly connected to the support rod, and the outer side wall of the support column is provided with an insertion interface.

[0013] As a preferred embodiment of the stainless steel rivet processing fixture of this utility model, a counterweight is fixedly connected to the side wall of the support rod, a plurality of fixing holes are opened on the outer side wall of the support rod, a pin is inserted into one of the fixing holes, a through groove is opened on the top of the support rod, and a guide plate is fixedly connected to the inner side wall of the support rod.

[0014] As a preferred embodiment of the stainless steel rivet processing fixture of this utility model, the top of the pressure rod is integrally formed with a handle, the side wall of the rotating shaft is integrally formed with a threaded rod, the outer circumference of the threaded rod passes through the support rod and is fitted with a friction-reducing washer, the side wall of the friction-reducing washer is in close contact with the support rod, a disc spring assembly is fitted on the outer circumference of the threaded rod, and an adjusting nut is threadedly connected to the outer circumference of the threaded rod.

[0015] 3. Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are: This type of stainless steel rivet processing fixture has inherent self-locking and high transmission accuracy through worm gear transmission. Combined with bearing seats that can eliminate axial and radial runout, the movement of the worktable is minimal and precise, and the adjusted position is extremely stable. There is no need to worry about subsequent operations causing deviation, which greatly improves the efficiency of aligning the hole and the final positioning accuracy, and meets the process requirements of high-precision riveting. This type of stainless steel rivet processing fixture allows the operator to quantitatively set the clamping force by adjusting the compression amount of the disc spring assembly via the nut. The disc spring assembly provides a nearly stable reaction force during the compression stroke, ensuring that the clamping force does not fluctuate due to the operator's feel or changes in the pressing stroke. This effectively avoids problems such as workpiece loosening or rivet misalignment caused by insufficient pressure, and workpiece damage or deformation caused by excessive pressure. At the same time, the adaptive bearing and telescopic rod structure ensure that the pressure head always fits evenly against the workpiece, further guaranteeing the reliability of the clamping quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a stainless steel rivet processing fixture according to the present invention; Figure 2 This is a rear view of the overall structure of a stainless steel rivet processing fixture according to this utility model; Figure 3 This is a schematic diagram of the moving component structure of a stainless steel rivet processing fixture according to the present invention; Figure 4 This is a schematic diagram of the constant pressure component structure of a stainless steel rivet processing fixture according to the present invention; Figure 5 This is a schematic diagram of the adaptive component structure of a stainless steel rivet processing fixture according to the present invention.

[0017] Explanation of the labels in the diagram: 100, base; 110, guide groove; 120, support block; 200, moving assembly; 210, worm gear; 211, rotary wheel; 220, worm wheel; 230, bearing seat; 240, lead screw; 250, moving block; 260, worktable; 261, slide bar; 262, positioning hole; 270, support column; 271, connection port; 272, insertion hole; 300, constant pressure assembly; 310, support rod; 311, fixing hole; 312 313. Counterweight; 320. Guide plate; 331. Pin; 332. Shaft; 333. Threaded rod; 334. Anti-friction washer; 355. Sector gear; 366. Driven gear; 370. Pressure rod; 381. Handle; 490. Disc spring assembly; 400. Adjusting nut; 411. Adaptive assembly; 420. Rack; 430. Mounting base; 440. Adaptive bearing; 450. Connecting rod; 460. Spring; 470. Telescopic rod; 480. Pressure head. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0023] This utility model provides an overall structural diagram of an embodiment of a fixture for processing stainless steel rivets, including: Please see Figures 1-5 This embodiment of a stainless steel rivet processing fixture includes a base 100, which provides an installation foundation. A movable component 200 is provided on the top of the base 100. The movable component 200 includes a worm gear 211. A rotating wheel 212 is fixedly connected to the side wall of the worm gear 211. A worm wheel 220 meshes with the outer circumferential wall of the worm gear 211. The structure of the worm wheel 220 and the worm gear 211 ensures the accuracy of fine adjustment and the stability after positioning through self-locking characteristics. A lead screw 240 is inserted into the side wall of the worm wheel 220. A movable block 250 is threadedly connected to the outer circumferential wall of the lead screw 240. A worktable 260 is fixedly connected to the top of the movable block 250 for placing the workpiece to be processed. A support column 270 is fixedly connected to the top of the base 100. A constant pressure component 300 is provided on the side wall of the support column 270. The constant pressure component 300 includes a support rod 310, a rotating shaft 330 inserted into the side wall of the support rod 310, a pressure rod 360 sleeved on the outer circumference of the rotating shaft 330, and a sector gear 340 sleeved on the outer circumference of the rotating shaft 330 to form a gear speed-increasing mechanism, which converts the oscillation of the pressure rod 360 into a faster rotation of the driven gear 350, thereby providing a basis for driving the rack. The driven gear 350 meshes with the outer circumference of the sector gear 340, and an adaptive component 400 is provided on the outer circumference of the driven gear 350. The adaptive component 400 includes a rack 410, with a mounting base 420 fixedly connected to the bottom of the rack 410. An adaptive bearing 430 is fixedly connected to the inner circumference of the mounting base 420. The adaptive bearing 430 is a spherical bearing. To allow the connecting rod 440 to swing arbitrarily within a certain angle range, the connecting rod 440 is inserted into the inner circumference of the adaptive bearing 430. A telescopic rod 460 is welded to the bottom of the connecting rod 440. The telescopic rod 460 provides a small buffer stroke in the vertical direction. A boss is integrally formed at the bottom of the telescopic rod 460. A spring 450 is fixedly connected to the top of the boss for adaptive pressure. The top of the spring 450 is in close contact with the connecting rod 440. A pressure head 470 is welded to the bottom of the boss. The pressure head 470 is a spherical structure to accommodate different rivets.

[0024] It is worth noting that, in order to facilitate the stable movement of the worktable 260, the top of the base 100 is provided with multiple guide grooves 110 for guiding the movement of the worktable 260, and the bottom of the base 100 is fixedly connected to a support block 120, with a threaded rod 240 inserted into the side wall of the support block 120.

[0025] Next, to ensure the stable operation of the worm gear 220, specifically, both ends of the worm gear 220 are tightly attached to the bearing housing 230. The bearing fixed inside the bearing housing 230 is a double-row angular contact ball bearing, which is used to solve the problems of axial movement and radial runout. The side wall of the bearing housing 230 is fixedly connected to the mounting box 210, and the worm 211 is inserted into the inner side wall of the mounting box 210.

[0026] Meanwhile, in order to facilitate the fixing of the workpiece to be processed, the top of the worktable 260 is provided with multiple positioning holes 262, which can be used to connect external positioning pins and other positioning structures to perform initial positioning of the workpiece. The bottom of the worktable 260 is integrally formed with multiple slide bars 261, and the bottom of the slide bars 261 is slidably connected to the guide groove 110.

[0027] Furthermore, to facilitate the installation of the support rod 310, specifically, the side wall of the support column 270 is provided with a connection port 271, the inner side wall of the connection port 271 is fixedly connected to the support rod 310, and the outer side wall of the support column 270 is provided with a insertion interface to facilitate the insertion of the pin 320.

[0028] It is worth noting that, in order to facilitate the adjustment and positioning of the support rod 310, a counterweight 312 is fixedly connected to the side wall of the support rod 310. Multiple fixing holes 311 are opened on the outer side wall of the support rod 310 for lateral positioning of the support rod 310 with the insertion interface. A pin 320 is inserted into one of the fixing holes 311 to fix the current position. A through groove is opened on the top of the support rod 310 to facilitate the rotation of the sector gear 340. A guide plate 313 is fixedly connected to the inner side wall of the support rod 310 to guide the rack 410 and ensure the stable connection between the rack 410 and the driven gear 350.

[0029] Finally, for convenient pressure preset, specifically, the top of the pressure rod 360 is integrally connected to a handle 361 for easy gripping and operation by the user. The side wall of the rotating shaft 330 is integrally connected to a threaded rod 331. The outer circumference of the threaded rod 331 passes through the support rod 310 and is fitted with a friction-reducing washer 332 to reduce friction and wear between the rotating threaded rod 331 and the stationary support rod 310. The side wall of the friction-reducing washer 332 is in close contact with the support rod 310. The outer circumference of the threaded rod 331 is fitted with a disc spring assembly 370 to provide a stable and preset reaction force to keep the output pressure constant. The outer circumference of the threaded rod 331 is threaded with an adjusting nut 380 to pre-compress the disc spring assembly 370, thereby setting an initial pressure.

[0030] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method. Combination Figures 1-5 The specific usage process of the stainless steel rivet processing fixture of this embodiment is as follows: 1: The operator first uses tools to rotate the adjusting nut 380 and compress the disc spring assembly 370 according to the specifications of the workpiece and rivet to preset the clamping force of the fixture. This pressure value can be determined based on experience or process documents. 2: Place the workpiece on the worktable 260 and fix it initially with the help of the positioning hole 262. Then, rotate the rotating wheel 212 by hand to drive the worm gear 211 to rotate. The worm gear 211 drives the worm wheel 220 and the lead screw 240 to rotate, thereby driving the worktable 260 and the workpiece on it to move laterally until the riveting hole on the workpiece is aligned with the center of the pressure head 470 above. Due to the self-locking property of the worm wheel 220 and the worm gear 211, the position will be automatically locked after adjustment. 3: The operator holds handle 361 and presses down the pressure rod 360 smoothly. The pressure rod drives the sector gear 340 to rotate through the rotating shaft 330, which drives the driven gear 350 and rack 410 to move downward. The adaptive component 400 at the end of rack 410 descends accordingly. The pressure head 470 contacts the workpiece and rivet. With the constant pressure component 300 ensuring that the clamping force is stable at the preset value, the riveting is completed. After releasing the pressure rod 360, each component returns to its initial position under the action of the reset force.

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A jig for stainless steel rivet processing, characterized by, The system includes a base (100), a movable component (200) is provided on the top of the base (100), the movable component (200) includes a worm (211), a rotating wheel (212) is fixedly connected to the side wall of the worm (211), a worm wheel (220) is meshed on the outer circumference of the worm (211), a lead screw (240) is inserted into the side wall of the worm wheel (220), a movable block (250) is threadedly connected to the outer circumference of the lead screw (240), a worktable (260) is fixedly connected to the top of the movable block (250), a support column (270) is fixedly connected to the top of the base (100), and a constant pressure component (300) is provided on the side wall of the support column (270). The constant pressure component (300) includes a support rod (310), a rotating shaft (330) is inserted into the side wall of the support rod (310), a pressure rod (360) is sleeved on the outer circumference of the rotating shaft (330), a sector gear (340) is sleeved on the outer circumference of the rotating shaft (330), a driven gear (350) meshes with the outer circumference of the sector gear (340), and an adaptive component (400) is provided on the outer circumference of the driven gear (350). The adaptive component (400) includes a rack (410), a mounting base (420) is fixedly connected to the bottom of the rack (410), an adaptive bearing (430) is fixedly connected to the inner circumference of the mounting base (420), a connecting rod (440) is inserted into the inner circumference of the adaptive bearing (430), a telescopic rod (460) is fixedly connected to the bottom of the connecting rod (440), a boss is integrally formed at the bottom of the telescopic rod (460), a spring (450) is fixedly connected to the top of the boss, the top of the spring (450) is in close contact with the connecting rod (440), and a pressure head (470) is welded to the bottom of the boss.

2. The stainless steel rivet jig according to claim 1, wherein The base (100) has multiple guide grooves (110) on its top, and a support block (120) is fixedly connected to the bottom of the base (100). The lead screw (240) is inserted into the side wall of the support block (120).

3. The fixture for processing stainless steel rivets according to claim 2, characterized in that, Both ends of the worm gear (220) are tightly attached to the bearing housing (230), and the side wall of the bearing housing (230) is fixedly connected to the mounting box (210), and the worm (211) is inserted into the inner side wall of the mounting box (210).

4. The fixture for processing stainless steel rivets according to claim 3, characterized in that, The top of the workbench (260) is provided with multiple positioning holes (262), and the bottom of the workbench (260) is integrally formed with multiple slide bars (261), and the bottom of the slide bars (261) is slidably connected to the guide groove (110).

5. The fixture for processing stainless steel rivets according to claim 4, characterized in that, The support column (270) has a connection port (271) on its side wall. The support rod (310) is fixedly connected to the inner side wall of the connection port (271). The support column (270) has an insertion interface on its outer side wall.

6. The fixture for processing stainless steel rivets according to claim 5, characterized in that, A counterweight (312) is fixedly connected to the side wall of the support rod (310). A plurality of fixing holes (311) are provided on the outer side wall of the support rod (310). A pin (320) is inserted into one of the fixing holes (311). A through groove is provided on the top of the support rod (310). A guide plate (313) is fixedly connected to the inner side wall of the support rod (310).

7. The fixture for processing stainless steel rivets according to claim 6, characterized in that, The top of the pressure rod (360) is integrally connected to a handle (361), and the side wall of the rotating shaft (330) is integrally connected to a threaded rod (331). The outer circumference of the threaded rod (331) passes through the support rod (310) and is fitted with a friction-reducing washer (332). The side wall of the friction-reducing washer (332) is in close contact with the support rod (310). The outer circumference of the threaded rod (331) is fitted with a disc spring assembly (370), and the outer circumference of the threaded rod (331) is threaded with an adjusting nut (380).

Images