Grinding and clamping device for eccentric shaft
By using a clamping insert and damper design in the eccentric shaft clamping device, the problem of unstable eccentric shaft clamping is solved, achieving stable clamping and pre-tightening effects, and improving machining accuracy and surface quality.
Patent Information
- Application Number
- CN202520632486.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing eccentric shaft clamping devices cannot adapt to eccentric shafts of different specifications and shapes, resulting in poor clamping effect and easy scratches or deformation, affecting accuracy and surface quality, while lacking pre-tightening effect.
The clamping base is fixed on the guide block. The guide block and clamping base move on the rotating disk through the meshing of the threaded groove and the threaded disc. Combined with the design of the damper and the limit plate, the eccentric shaft is stably clamped, avoiding direct clamping damage and providing a pre-tightening effect.
It achieves a stable clamping of the eccentric shaft, avoiding scratches and deformation during the clamping process, ensuring machining accuracy and surface quality, and providing a pre-tightening effect to prevent loosening.
Smart Images
Figure CN223947665U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to eccentric shaft clamping technical field, concretely is a kind of grinding clamping device of eccentric shaft. BACKGROUND
[0002] In the field of machining, the grinding of eccentric shaft is an important process link, and the clamping and positioning of eccentric shaft has always been a difficulty in machining due to its special structure.
[0003] However, the existing eccentric shaft clamping device usually uses fixed clamps or adjustable clamps for clamping, but these clamps often cannot adapt to eccentric shafts of different specifications and shapes, resulting in poor clamping effect. In addition, the direct clamping method is prone to scratching or deforming the surface of the eccentric shaft during clamping, affecting the precision and surface quality of the eccentric shaft. At the same time, the traditional clamping device directly clamps the eccentric shaft on the surface of the clamp, but it is easy to damage the workpiece and does not have a pre-tightening effect.
[0004] Therefore, the utility model provides a kind of grinding clamping device of eccentric shaft to solve the problems raised in the above background. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a kind of grinding clamping device of eccentric shaft to solve the problems raised in the above background.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of grinding clamping device of eccentric shaft, comprising:
[0007] The bottom surface of the clamping insert is fixedly connected to the surface of the guide block, the surface of the guide block is movably connected to the guide groove, the guide groove is provided on the surface of the rotating disc, the surface of the guide block is provided with a threaded groove, the threaded groove of the guide block is engaged with the threaded surface of the threaded disc, the inside of the threaded disc is fixedly connected to the surface of the rotating shaft, and the rotating shaft is rotatably connected to the rotating disc.
[0008] Preferably, the inside of the rotating disc is rotatably connected with a torsion bar, the bottom end of the torsion bar is fixedly connected with a driving gear, the teeth of the driving gear are engaged with the teeth of the threaded disc, and the top surface of the torsion bar is provided with an equilateral hexagonal groove.
[0009] Preferably, the back surface of the rotating disc is fixedly connected to the output shaft end of the driving device, and the base of the driving device is fixedly connected to the top surface of the workbench.
[0010] Preferably, the clamping insert comprises a through port, the through port is provided in the inside of the clamping insert, the surface of the through port is fixedly connected with a damper, the end of the damper is fixedly connected to the surface of the pressing plate, the surface of the pressing plate is fixedly connected with a limiting plate, the surface of the limiting plate is movably connected to the limiting port, the limiting port is provided in the inside of the clamping insert, the central axes of the limiting port and the through port coincide, and the surface of the pressing plate is provided with an anti-skid groove.
[0011] Preferably, the surface of the limiting mouth closely abuts the surface of the limiting plate, and the cross section of the limiting mouth is in a "convex" structure.
[0012] Preferably, the surface of the clamping insert is provided with a trapezoidal notch, the clamping insert is provided in three groups, and the three groups of clamping inserts are arranged in an annular array along the central shaft of the rotating disc.
[0013] Compared with the prior art, the beneficial effects of the eccentric shaft grinding clamping device are as follows: the base of the clamping insert is fixed on the surface of the guide block, then the surface of the guide block is screwed with the threaded surface of the threaded disc, when the rotating shaft drives the threaded disc to rotate in the rotating disc, the threaded disc drives the guide block to move on the surface of the guide groove, so that the guide block drives the clamping insert to move on the outer surface of the rotating disc to clamp the eccentric shaft, when the clamping insert continuously moves on the surface of the rotating disc, the compression plate pushes the damper to shrink, and at the same time, the clamping insert pushes the compression plate to move, so that the compression plate and the clamping insert jointly clamp the workpiece, the compression plate has a pre-tightening clamping effect on the workpiece, so as to prevent the clamping insert from directly clamping the workpiece and causing damage, and at the same time, the damper shrinkage limiting plate also shrinks into the limiting mouth, so as to stably guide the surface of the compression plate on the clamping insert, and the rotating disc is prevented from loosening when clamping the workpiece by the compression plate.
[0014] The utility model provides an eccentric shaft's grinding clamping device. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is whole three -dimensional schematic diagram of the utility model structure;
[0016] Figure 2 It is rotating disc structure cross section schematic diagram of the utility model;
[0017] Figure 3 It is clamping insert and threaded disc position relation structure schematic diagram;
[0018] Figure 4 It is three -dimensional schematic diagram of the utility model structure clamping insert;
[0019] Figure 5 It is cross section schematic diagram of the utility model structure clamping insert;
[0020] Figure 6 It is compression plate and limiting plate position relation structure schematic diagram.
[0021] In the drawing: workbench 1, drive arrangement 2, rotating disc 3, clamping insert 4, through mouth 401, damper 402, compression plate 403, limiting mouth 404, limiting plate 405, rotating shaft 5, threaded disc 6, drive tooth disc 7, torsion bar 8, guide groove 9, guide block 10. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill of the art without making creative labor belong to the scope of the protection of the utility model.
[0023] Embodiment one, please refer to Figures 1-6 The utility model provides three technical schemes: a eccentric shaft's grinding clamping device, it is including:
[0024] Clamping insert 4, the bottom surface fixedly connected in the surface of guide block 10, the surface of guide block 10 is movably connected in guide groove 9, guide groove 9 is set up in the surface of rotating disc 3, the surface of guide block 10 is set up with the thread surface of the thread groove of screw plate 6, the inside fixedly connected surface of screw plate 6 is connected with the surface of rotating shaft 5, and rotating shaft 5 is rotatably connected in rotating disc 3.
[0025] Through the base of clamping insert 4 is fixed in the surface of guide block 10, then the surface thread groove of guide block 10 is screwed with the thread surface of screw plate 6, when rotating shaft 5 drives screw plate 6 to rotate in rotating disc 3, so that screw plate 6 drives guide block 10 to move on the surface of guide groove 9, so guide block 10 drives clamping insert 4 to move on the surface of rotating disc 3 and clamps eccentric shaft.
[0026] Embodiment two, refer to the attached Figures 1 to 6 On the basis of embodiment one, in order to realize the clamping of guide block 10 drive clamping insert 4 to workpiece surface, rotating disc 3 is rotatably connected with torsion bar 8 in the inside, and the bottom end of torsion bar 8 is fixedly connected with driving gear plate 7, the teeth of driving gear plate 7 are engaged with the teeth of screw plate 6, and the top surface of torsion bar 8 is provided with equilateral hexagonal groove.
[0027] Through the equilateral hexagonal wrench is inserted in the equilateral hexagonal groove in the top of torsion bar 8, by rotating knob torsion bar 8, driving gear plate 7 is engaged with screw plate 6 to rotate in rotating disc 3, so that the surface thread line of screw plate 6 is engaged with the surface thread groove of guide block 10, so that guide block 10 moves along the surface of guide groove 9, so that guide block 10 drives clamping insert 4 to clamp the surface of workpiece.
[0028] Embodiment three, refer to the attached Figures 1 to 6On the basis of embodiment two, in order to pre-tighten the clamping effect on the workpiece, the clamping insert 4 comprises a through hole 401, which is provided in the inner part of the clamping insert 4, and the surface of the through hole 401 is fixedly connected with a damper 402, the end of the damper 402 is fixedly connected with the surface of a pressing plate 403, the surface of the pressing plate 403 is fixedly connected with a limiting plate 405, the surface of the limiting plate 405 is movably connected in a limiting hole 404, the limiting hole 404 is provided in the inner part of the clamping insert 4, the center axes of the limiting hole 404 and the through hole 401 coincide, and the surface of the pressing plate 403 is provided with an anti-skid groove.
[0029] When the clamping insert 4 moves to the pressing plate 403 and first tightly adheres to the surface of the workpiece, and when the clamping insert 4 continuously moves on the surface of the rotating disc 3, the pressing plate 403 pushes the damper 402 to shrink, and at the same time, the clamping insert 4 pushes the pressing plate 403 to move, and the two jointly clamp the workpiece, so that the pressing plate 403 has a pre-tightening clamping effect on the workpiece, so as to prevent damage caused by directly clamping the workpiece by the clamping insert 4, and at the same time, the damper 402 shrinks the limiting plate 405, which also shrinks into the limiting hole 404, so as to stably guide the pressing plate 403 on the surface of the clamping insert 4, and avoid loosening of the pressing plate 403 when clamping the workpiece in the rotating process of the rotating disc 3.
[0030] In actual use, the base of the clamping insert 4 is fixed on the surface of the guide block 10, and then the surface threaded groove of the guide block 10 is screwed with the threaded surface of the threaded disc 6, when the rotating shaft 5 drives the threaded disc 6 to rotate in the rotating disc 3, so that the threaded disc 6 drives the guide block 10 to move on the surface of the guide groove 9, so that the guide block 10 drives the clamping insert 4 to move on the outer surface of the rotating disc 3 to clamp the eccentric shaft, by inserting the hexagonal wrench into the hexagonal groove at the top of the torsion rod 8, and by rotating the knob to drive the gear disc 7 to mesh with the threaded disc 6 to rotate in the rotating disc 3, so that the surface threaded line of the threaded disc 6 meshes with the surface threaded groove of the guide block 10, so that the guide block 10 moves along the surface of the guide groove 9, so as to realize that the guide block 10 drives the clamping insert 4 to clamp the surface of the workpiece, when the clamping insert 4 moves to the pressing plate 403 and first tightly adheres to the surface of the workpiece, and when the clamping insert 4 continuously moves on the surface of the rotating disc 3, the pressing plate 403 pushes the damper 402 to shrink, and at the same time, the clamping insert 4 pushes the pressing plate 403 to move, and the two jointly clamp the workpiece, so that the pressing plate 403 has a pre-tightening clamping effect on the workpiece, so as to prevent damage caused by directly clamping the workpiece by the clamping insert 4, and at the same time, the damper 402 shrinks the limiting plate 405, which also shrinks into the limiting hole 404, so as to stably guide the pressing plate 403 on the surface of the clamping insert 4, and avoid loosening of the pressing plate 403 when clamping the workpiece in the rotating process of the rotating disc 3.
[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An eccentric shaft grinding fixture device, characterized by, The utility model relates to a worktable with a damping device, which comprises a worktable (1), a driving device (2), a rotating disc (3), a threaded disc (6), a threaded groove (7), a torsion bar (8) and a clamping insert (4). The rotating disc (3) is internally rotatably connected with a torsion bar (8), the bottom end of the torsion bar (8) is fixedly connected with a driving gear disc (7), the teeth of the driving gear disc (7) are engaged with the teeth of the threaded disc (6), and the top surface of the torsion bar (8) is provided with an equilateral hexagonal groove.
2. A device for clamping an eccentric shaft for grinding according to claim 1, characterized in that: The back surface of the rotating disc (3) is fixedly connected with the output shaft end of the driving device (2), and the base of the driving device (2) is fixedly connected with the top surface of the worktable (1).
3. A device for holding an eccentric shaft during grinding according to claim 1, characterized in that: The clamping insert (4) comprises a through hole (401) formed in the interior of the clamping insert (4), the surface of the through hole (401) is fixedly connected with a damper (402), the end of the damper (402) is fixedly connected with the surface of a pressing plate (403), the surface of the pressing plate (403) is fixedly connected with a limiting plate (405), the surface of the limiting plate (405) is movably connected in a limiting hole (404) formed in the interior of the clamping insert (4), the center axes of the limiting hole (404) and the through hole (401) coincide, and the surface of the pressing plate (403) is provided with an anti-skid groove.
4. A device for holding eccentric shafts during grinding according to claim 1, characterized in that: The surface of the limiting hole (404) is in close contact with the surface of the limiting plate (405), and the cross section of the limiting hole (404) is in a "convex" structure.
5. A device for the grinding of eccentric shafts according to claim 4, characterized in that: The surface of the clamping insert (4) is provided with a trapezoidal notch, the clamping insert (4) is provided in three groups, and the three groups of clamping inserts (4) are arranged in a ring shape along the central axis of the rotating disc (3).
6. A device for grinding eccentric shafts according to claim 1, characterized in that: