Gear clamping positioning disc

Abstract

The utility model discloses a gear clamping positioning disc, including disc seat, main shaft stem, ring and control rod, the outer periphery of disc seat is equipped with a plurality of ear bearing, and the ear bearing surface rotatory mounting has the clamping lever, and the clamping lever surface swing installation has the ear -pad, and the disc seat surface fixed mounting vertical cover, and the vertical cover cover joint main shaft stem, and the main shaft stem top is equipped with the cross bar, and the cross bar is with the ring pressure joint, and the main shaft stem outer periphery rotatory mounting has the inclined strut, and the control rod one end connects eccentric crankshaft, and the crankshaft cover joint is in the main shaft stem inboard, and the control rod other end connects operating rod, this device can according to the gear outer diameter or the inner hole size, respectively through clamping lever subassembly realizes the outer circle clamping, or through ring subassembly realizes the inner hole clamping, has compact structure, clamping stable, and the advantage such as simple operation and strong adaptability, is applicable to the efficient positioning clamping of multi -specification gear.

Description

Technical Field

[0001] This utility model relates to the field of gear tooling technology, specifically a gear clamping and positioning disc. Background Technology

[0002] Gears, as common transmission components, are widely used in various mechanical equipment such as automobiles, machine tools, and construction machinery. During gear machining or inspection, clamping devices are typically used to reliably position the gears in the workstation to ensure alignment and stable support during milling, drilling, turning, or inspection operations. The reliability, efficiency, and adaptability of the clamping method directly affect the accuracy and machining cycle time of subsequent processes.

[0003] In existing technologies, gear clamping devices mainly include two types: internal expansion positioning structures and external clamping structures. Internal expansion positioning devices typically use expansion sleeves or expansion mandrels to clamp the inner hole of the gear. This type of structure often uses threaded propulsion or conical expansion to achieve radial expansion. While the structure is simple, the positioning accuracy is limited, especially in terms of instability in clamping force and repeatability. In addition, some structures are cumbersome to adjust when adapting to gears of different sizes, have poor versatility, and are difficult to meet the needs of rapid clamping in multiple batches and small quantities.

[0004] External clamping fixtures typically use eccentric wheels, lever-type jaws, or other structures to limit and clamp the outer diameter of gears. They are suitable for gear structures without a center hole or where the center hole cannot be used as a clamping reference. However, most existing external clamping structures apply force at a single point, which can easily cause gear positional deviation, resulting in poor clamping stability. Furthermore, the operational accuracy relies on manual judgment, posing a risk of jaw misalignment or insecure clamping.

[0005] In addition, although some existing composite clamping devices attempt to combine internal hole positioning and external circle clamping, they generally suffer from problems such as complex mechanisms, cumbersome operation procedures, high manufacturing costs, and difficulties in structural adjustment, which are not conducive to their widespread application.

[0006] Therefore, how to provide a gear clamping and positioning device that is compact in structure, allows for selection of clamping methods according to gear size, provides reliable clamping, and has strong adaptability has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is: a gear clamping and positioning disc, comprising: a disc base, a main shaft, an expansion ring, and a control rod.

[0009] The disc base has several lug seats on its outer periphery, and clamping rods are rotatably mounted on the surface of each lug seat. A vertical sleeve is fixedly mounted on the surface of the disc base and is sleeved on the outer periphery of the main shaft. An expansion ring is sleeved on the outer surface of the vertical sleeve. A crossbar is fixedly connected to the top of the main shaft and is pressed against the top surface of the expansion ring. A diagonal brace is rotatably mounted on the outer periphery of the main shaft. One end of the diagonal brace slides through the lug seat and abuts against the clamping rod. A control rod is rotatably mounted on the surface of the disc base. One end of the control rod is connected to a crankshaft sleeved on the inner side of the main shaft, and the other end of the control rod is vertically connected to an operating rod.

[0010] In a preferred example, the clamping rod is rotatably mounted on the surface of the bearing seat in a lever structure, and a lug is movably mounted on the surface of the clamping rod. The lug is used to form abutment positioning with the outer periphery of the gear, and the diagonal brace is arranged in a one-to-one correspondence with the clamping rod.

[0011] Specifically, when the control lever drives the spindle to rise and fall, the diagonal brace pushes the clamping rod to deflect, and the lug forms a clamp with the outer circumference of the gear, thereby achieving stable limiting clamping of the gear's outer circle. This structure has good self-adaptive capability and clamping force transmission characteristics, effectively improving clamping efficiency and stability.

[0012] In a preferred embodiment, the top outer periphery of the sleeve is provided with an inclined support surface, which is a tapered surface that gradually tapers away from the disc seat; the inner side of the expansion ring is provided with an inclined expansion surface, which slides in conjunction with the inclined support surface.

[0013] Specifically, when the crossbar at the top of the main shaft applies pressure to the expansion ring, the inclined expansion surface, guided by the inclined support surface, transforms axial deformation into radial deformation, causing the expansion ring to expand outwards and make tight contact with the gear's inner hole, thus achieving shaft centering and clamping. This structure offers high positioning accuracy and structural stability, and is suitable for positioning operations of gears with different inner hole diameters.

[0014] In a preferred embodiment, the lug seat is further configured such that a through hole is provided on the inner side, the diagonal brace slides through the through hole, and the surface of the diagonal brace is provided with an arc-shaped sliding convex surface that cooperates with the inner wall of the through hole.

[0015] Specifically, when the main spindle is raised or lowered, the diagonal brace slides inside the through hole to maintain motion stability, avoid deviation or interference, and improve the smoothness and synchronization of the clamping action.

[0016] In a preferred embodiment, the crankshaft is further configured such that its outer circumference is offset from the control rod axis, the main shaft surface has a sleeve hole, the crankshaft is sleeved in the sleeve hole, and a spring pin is provided in the sleeve hole to abut against the crankshaft surface for positioning the rotation angle of the crankshaft.

[0017] Specifically, when the operator rotates the control lever, the crankshaft, due to its eccentric structure, drives the spindle to rise and fall, and under the limiting action of the spring pin, precise control is achieved, avoiding over-operation or deviation, and improving the spindle stroke control accuracy and clamping consistency.

[0018] Through the above technical solution, this utility model provides a gear clamping and positioning structure that combines internal hole clamping and external circle clamping functions. It can select the appropriate clamping method according to different gear structures, has strong adaptability, stable clamping, and high positioning accuracy. It is especially suitable for the needs of rapid part change and precision positioning in gear processing, inspection and assembly stations, and has broad application prospects.

[0019] The beneficial effects achieved by this utility model are as follows:

[0020] 1. By setting an expansion ring structure with radial tightening function, this utility model achieves efficient positioning and clamping of the gear inner hole under the driving action of the main spindle and control rod. The structure is stable, the clamping accuracy is high, and it is suitable for gear processing and positioning requirements of different specifications of center hole size, significantly improving positioning reliability and repeatability.

[0021] 2. In this utility model, a clamping mechanism with a diagonal brace linkage clamping rod and an abutment is adopted. Under the drive of the main shaft lifting, the outer circle of the gear can be stably clamped simultaneously, which can adapt to the clamping requirements of gears of various sizes. The clamping process does not require separate adjustment, which improves the clamping efficiency, reduces the complexity of operation, and has strong practicality and structural versatility. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the main shaft and the expansion ring according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the bearing seat according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the surface structure of the sleeve and expansion ring according to an embodiment of the present invention.

[0026] Figure label:

[0027] 100. Plate base; 110. Ear support; 120. Clamping rod; 121. Ear rest;

[0028] 200. Main shaft; 210. Horizontal bar; 220. Vertical sleeve; 230. Diagonal brace; 221. Diagonal brace surface

[0029] 300, Expansion ring; 310, Deformation gap; 320, Inclined expansion surface;

[0030] 400. Control lever; 410. Crankshaft. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0032] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0033] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a gear clamping and positioning disc.

[0034] Combination Figures 1-4 As shown, the gear clamping and positioning disk provided by this utility model includes a disk base 100, a main shaft 200, an expansion ring 300, and a control rod 400.

[0035] The disc base 100 has a circular structure, and several lug seats 110 are evenly arranged on its outer periphery. A clamping rod 120 is rotatably mounted on the surface of each lug seat 110. One end of the clamping rod 120 forms a rotatable fit structure with the lug seat 110, and the other end is movably connected to an abutment 121, which is used to form an abutment clamp with the outer circumferential surface of the gear.

[0036] A vertical sleeve 220 is provided at the center of the disk base 100. The bottom of the vertical sleeve 220 is fixedly installed on the upper surface of the disk base 100, and a main shaft 200 is installed through it. The main shaft 200 can slide up and down relative to the vertical sleeve 220. The top outer periphery of the vertical sleeve 220 forms a diagonal support surface 221, which is a tapered structure that tapers upward.

[0037] A crossbar 210 is fixedly installed at the upper end of the main shaft 200, and the end of the crossbar 210 forms a press fit with the top surface of the expansion ring 300. The expansion ring 300 is a hollow circular ring with an inclined expansion surface 320 on its inner side, which mates with the inclined support surface 221 of the vertical sleeve 220. When the crossbar 210 applies downward pressure to the expansion ring 300, the inclined expansion surface 320 slides downward along the inclined support surface 221 and pushes the outer circumference of the expansion ring 300 to expand outward, thereby forming an interference fit between the outer circumference of the expansion ring 300 and the inner hole of the gear being positioned, achieving inner hole clamping and positioning.

[0038] The main shaft 200 is fitted with several diagonal braces 230 around its outer periphery. The middle section of each diagonal brace 230 can slide through a through hole inside the bearing seat 110. One end of the diagonal brace 230 abuts against the clamping rod 120, and the other end is connected to the side of the main shaft 200. The surface of the diagonal brace 230 is formed with an arc-shaped sliding convex surface, which is used to form a guiding engagement with the inner wall of the through hole during the lifting and guiding process.

[0039] The control lever 400 includes a control lever 400 and a crankshaft 410. One end of the control lever 400 is rotatably mounted on the upper surface of the disc base 100, and the other end is vertically connected to an operating lever for manual rotation by the operator. The crankshaft 410 has an eccentric structure, and its axis does not coincide with the rotation axis of the control lever 400. The crankshaft 410 is sleeved in the inner hole of the main shaft 200 and positioned by a spring pin. One end of the spring pin is embedded in a sleeve hole on the main shaft 200, and the other end elastically abuts against the surface of the crankshaft 410 to achieve limit control of the deflection angle of the crankshaft 410.

[0040] In actual operation, the operator can rotate the control lever 400 to rotate the crankshaft 410 and drive the main shaft 200 to move up and down. When the main shaft 200 moves up and down, it can drive the crossbar 210 to apply pressure to the expansion ring 300, so as to achieve radial expansion of the expansion ring 300 and thus clamp the inner hole of the gear; or drive the diagonal brace 230 to slide in the bearing seat 110, push the clamping rod 120 to deflect, so that the lug 121 abuts against the outer circumference of the gear, and achieve outer circle positioning and clamping.

[0041] In summary, this specific embodiment provides complete support and clear explanation of the various structures and their mating relationships described in the claims, possesses good feasibility and stability, and is suitable for the rapid clamping and center positioning of gears of different models.

[0042] Working principle and usage process of this utility model:

[0043] This invention achieves efficient clamping and stable positioning of gears by controlling the coordinated operation of the clamping and positioning structures. Specifically:

[0044] Depending on the outer diameter and inner diameter of the gear being clamped, the operating method can choose to use either an expansion ring 300 for inner hole clamping or a clamping rod 120 for outer circumference clamping. When the inner hole clamping method is selected, the rotation of the control rod 400 drives the crankshaft 410 to rotate eccentrically, thereby driving the main shaft 200 to move up and down along the direction of the vertical sleeve 220. While the crossbar 210 applies axial downward pressure to the expansion ring 300, the inclined expansion surface 320 undergoes radial deformation under the guidance of the inclined support surface 221, causing the outer circumference of the expansion ring 300 to expand radially and fit tightly against the inner hole of the gear, thus completing the positioning and clamping of the gear's center hole.

[0045] When the peripheral clamping method is selected, the main spindle 200 is driven to rise and fall by the control lever 400, which drives the diagonal brace 230 to slide along the through hole inside the bearing seat 110, and pushes the clamping rod 120 to achieve deflection. The lug 121 at the front end of the clamping rod 120 abuts against the outer peripheral surface of the gear, thereby achieving the limiting clamping of the outer circle of the gear.

[0046] This utility model has a bidirectional clamping function, which can adapt to the clamping requirements of gears of different specifications. It achieves clamping synchronization and clamping stability through a mechanical transmission structure, which facilitates quick gear replacement and precise positioning during processing.

[0047] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gear clamping positioning disc, characterized in that, include: The device comprises a disc base (100), a main shaft (200), an expansion ring (300), and a control lever (400). The outer periphery of the disc base (100) is provided with several lug seats (110), and each lug seat (110) has a clamping rod (120) rotatably mounted on its surface. A vertical sleeve (220) is fixedly mounted on the surface of the disc base (100), and the vertical sleeve (220) is sleeved around the outer periphery of the main shaft (200). The expansion ring (300) is sleeved around the surface of the vertical sleeve (220), and a crossbar (210) is fixedly connected to the top end of the main shaft (200). The crossbar (210) is pressed against the top surface of the expansion ring (300). A diagonal brace (230) is rotatably mounted on the outer circumference of the main shaft (200). One end of the diagonal brace (230) slides through the bearing seat (110) and abuts against the surface of the clamping rod (120). The control rod (400) is rotatably mounted on the surface of the disc seat (100). One end of the control rod (400) is connected to a crankshaft (410). The crankshaft (410) is rotatably sleeved on the inner side of the main shaft (200). The other end of the control rod (400) is vertically connected to an operating rod.

2. The gear clamping and positioning disc according to claim 1, characterized in that: The clamping rod (120) is rotatably mounted on the surface of the lug seat (110) in a lever structure. The surface of the clamping rod (120) is movably mounted with a lug (121), and the diagonal brace (230) is arranged in a one-to-one correspondence with the clamping rod (120).

3. The gear clamping and positioning disc according to claim 1, characterized in that: The top of the stand (220) is provided with an inclined support surface (221), which is a tapered surface that gradually narrows away from the plate seat (100). The inner side of the expansion ring (300) is provided with an inclined expansion surface (320) that slides against the inclined support surface (221).

4. The gear clamping and positioning disc according to claim 1, characterized in that: The inner side of the lug seat (110) is provided with a through hole, the diagonal brace (230) slides through the through hole, and the surface of the diagonal brace (230) is provided with an arc-shaped sliding convex surface located inside the through hole.

5. The gear clamping and positioning disc according to claim 1, characterized in that: The outer circumference of the crankshaft (410) is offset from the axis of the control rod (400). The main shaft (200) has a sleeve hole on its surface. The sleeve hole is used to fit the crankshaft (410), and a spring pin is provided in the sleeve hole to abut against the surface of the crankshaft (410) to position the deflection angle of the crankshaft (410).

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