Fixture device for honing cycloidal gear equally-divided holes through floating positioning

Abstract

The utility model discloses a fixture device for honing cycloidal gear equally-divided holes by floating positioning, which comprises a fixture main body, a cycloidal gear component, three groups of positioning mechanisms, a floating support mechanism and a fixed support mechanism, and is characterized in that a positioning tray for placing a cycloidal gear is arranged on the fixture main body; the cycloidal gear assembly is located on the position, matched with the cycloidal gear in appearance, of the positioning tray. The three sets of positioning mechanisms comprise cycloidal gear center hole positioning pins, limiting blocks and cover plates, and the cycloidal gear center hole positioning pins are arranged on center holes of the positioning trays; the limiting block is in threaded connection with the positioning tray; the cover plate is arranged above the upper supporting block; the floating supporting mechanism is a rotation stopping block which is in threaded connection with the positioning tray; one end of the fixed supporting mechanism is connected with the clamp body, the other end of the fixed supporting mechanism is connected with a honing machine workbench, and the fixed supporting mechanism comprises a bottom plate, a lower connecting plate and a lower supporting block. The cycloidal gear clamping device is simple in structure, convenient to operate and capable of effectively improving the clamping stability of cycloidal gears and the machining precision of equally-divided holes.

Description

Technical Field

[0001] This utility model relates to the field of machining fixtures, and in particular to a fixing fixture for machining cycloidal wheels. Background Technology

[0002] As a high-precision reducer, the RV reducer is widely used in fields such as robotics, automobiles, aerospace, and medical devices. The cycloidal gear, as the core component of the RV reducer, has a crucial impact on the overall transmission performance of the RV reducer.

[0003] The machining accuracy of the equally spaced holes in a cycloidal wheel directly affects its assembly accuracy and transmission performance. Honing is a crucial process in cycloidal wheel manufacturing to improve the dimensional accuracy, shape accuracy, and surface finish of the holes. Traditional honing fixtures have several shortcomings when honing the equally spaced holes of a cycloidal wheel. Firstly, traditional fixtures typically employ rigid positioning. During honing, the presence of honing force easily leads to significant stress concentration between the fixture and the workpiece. This stress causes minute displacements and deformations in the cycloidal wheel during machining, affecting the machining accuracy of the equally spaced holes and failing to meet high-precision requirements. Secondly, in actual machining operations, when the honing tool contacts the cycloidal wheel hole wall, vibrations and errors inevitably exist in the machining system, and traditional fixtures cannot effectively compensate for these interfering factors. This results in the roundness, cylindricity, and surface roughness of the equally spaced holes of the cycloidal wheel failing to achieve ideal machining results during honing, reducing product quality and performance. In addition, some existing clamping devices are cumbersome to operate when clamping cycloidal wheels, resulting in low clamping efficiency, which lengthens the entire production cycle and increases production costs. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a floating positioning fixture device for honing cycloidal wheel equally spaced holes, which can accurately position the cycloidal wheel equally spaced holes during the honing process, and at the same time, the floating device adapts to the small displacements during the honing process, thereby improving the honing accuracy.

[0006] To achieve the above objectives, this utility model proposes a fixture device for a floating positioning honing cycloidal wheel with equally spaced holes, comprising a fixture body, a cycloidal wheel assembly, three sets of positioning mechanisms, a floating support mechanism, and a fixed support mechanism. The fixture body is provided with a positioning tray for placing the cycloidal wheel, the positioning tray having a shape adapted to the equally spaced holes of the cycloidal wheel. The cycloidal wheel assembly is located on the positioning tray within the fixture body, where the shape of the positioning tray is adapted to the shape of the cycloidal wheel. The three sets of positioning mechanisms are disposed on the fixture body, each positioning mechanism including a cycloidal wheel center hole positioning pin, a limiting block, and a cover plate. The cycloidal wheel center hole positioning pin is disposed on the center hole of the positioning tray. The positioning block is threadedly connected to the positioning tray; the cover plate is positioned above the upper support block; the floating support mechanism is a stop block, which is threadedly connected to the positioning tray, allowing the fixture body to make minor floating adjustments during honing to ensure honing accuracy; one end of the fixed support mechanism is connected to the fixture body and the other end is connected to the honing machine worktable, the fixed support mechanism includes a base plate, a lower connecting plate and a lower support block, wherein the base plate is threadedly fixed to the honing machine worktable; the lower connecting plate is connected to the base plate and the lower support block by threads and cylindrical pins; the lower support block is connected to the fixture body and the lower connecting plate by threads and cylindrical pins.

[0007] This utility model discloses a floating positioning fixture device for honing cycloidal wheel dividing holes. It can accurately position the cycloidal wheel dividing holes during honing, and at the same time, it adapts to the small displacements during honing by using a floating device, thereby improving honing accuracy.

[0008] In addition, the fixture device for equal-dividing holes of a floating positioning honing cycloidal wheel proposed in the above application may also have the following additional technical features;

[0009] Specifically, a small gap is provided between the floating support mechanism and the cycloidal wheel assembly, allowing the cycloidal wheel assembly to make small displacements in the horizontal direction.

[0010] Specifically, in the fixed support mechanism, the lower connecting plate is provided with a plurality of chip removal holes for storing waste materials and iron filings that fall from the fixture body.

[0011] Specifically, the fixed support mechanism ensures the verticality of the fixture body during processing by superimposing the base plate, the lower connecting plate, and the lower support block, while also preventing the honing head from directly contacting the worktable during processing.

[0012] Specifically, the cycloidal wheel center hole positioning pin in the three sets of positioning mechanisms is sleeved on the center hole of the positioning tray.

[0013] Specifically, the limiting block and the cover plate in the three sets of positioning mechanisms, wherein the limiting block is provided with screws and nuts in the horizontal direction to assist in positioning the position of the positioning tray and further fix the position of the cycloidal wheel, the cover plate is provided with three equally divided holes for positioning when the honing machine processes the equally divided holes, and the cover plate is provided with a center hole and a threaded hole to be positioned and connected to the positioning tray through the upper support block, further fixing the position of the cycloidal wheel.

[0014] Specifically, the surface of the cycloidal wheel assembly is provided with a central hole and a fan-shaped hole corresponding to the anti-rotation block.

[0015] Specifically, the fixture body is provided with a handle for manipulating the positioning tray during processing, and the fixture body is provided with multiple chip removal holes for removing chips during honing.

[0016] Specifically, the cover plate and the upper support block are provided with a small gap, allowing the fixture body to make a small displacement in the vertical direction.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0020] Figure 2 This is a partial structural diagram of an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a fixed support mechanism according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the positioning pin for the center hole of the cycloidal wheel according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of an anti-rotation block according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a limiting block according to an embodiment of the present invention.

[0025] The following are labeled in the attached diagram: 1. Base plate; 2. Lower connecting plate; 3. Lower support block; 4. Fixture base plate; 5. Handle; 6. Positioning tray; 7. Cycloidal wheel assembly; 8. Upper support block; 9. Cover plate; 10. Limiting block; 11. Limiting screw; 12. Anti-rotation block; 13. Positioning pin for the center hole of the cycloidal wheel; 14. Screw; 15. Limiting screw; 16. Screw. Detailed Implementation

[0026] The technical solutions of this 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 this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] As shown in the figure, this utility model embodiment provides a fixture device for a floating positioning honing cycloidal wheel with equally spaced holes, including a fixture body composed of a fixture base plate 4, a handle 5, a positioning tray 6 and an upper support block 8; a cycloidal wheel assembly 7; three sets of positioning mechanisms composed of a cycloidal wheel center hole positioning pin 13, a limiting block 10 and a cover plate 9; a floating support mechanism composed of an anti-rotation block 12; and a fixed support mechanism composed of a base plate 1, a lower connecting plate 2 and a lower support block 3.

[0028] The fixture body is provided with a positioning tray 6 for placing the cycloidal wheel assembly 7. The positioning tray 6 has a shape that matches the equally spaced holes of the cycloidal wheel. The cycloidal wheel assembly 7 is located on the positioning tray 6 in the fixture body with a shape that matches the shape of the cycloidal wheel.

[0029] Three sets of positioning mechanisms are set on the fixture body. The positioning mechanism includes a cycloidal wheel center hole positioning pin 13, a limit block 10, and a cover plate 9. The cycloidal wheel center hole positioning pin 13 is sleeved on the center hole of the positioning tray 6. The limit block 10 is connected to the positioning tray 6 by screws 14 through threads. The cover plate 9 is fixed above the upper support block 8 by multiple screws.

[0030] The floating support mechanism includes a stop block 12, which is threadedly connected to the positioning tray 6 by screws 16. This allows the fixture body to make minor floating adjustments during honing to ensure honing accuracy.

[0031] One end of the fixed support mechanism is connected to the fixture body by screws, and the other end is connected to the honing machine worktable. The fixed support mechanism includes a base plate 1, a lower connecting plate 2, and a lower support block 3. The base plate 1 is fixed to the honing machine worktable by a threaded connection. The lower connecting plate 2 is connected to the base plate 1 and the lower support block 3 by screws and cylindrical pins. The lower support block 3 is connected to the fixture body and the lower connecting plate 2 by threads and cylindrical pins.

[0032] In one embodiment of this utility model, the floating support mechanism and the cycloidal wheel assembly 7, as well as the cycloidal wheel center hole positioning pin 13 and the cycloidal wheel assembly 7, are not tightly fitted, but have some small gaps, which allows the cycloidal wheel assembly 7 to make small displacements in the horizontal direction, thereby ensuring the accuracy of the honing machine when grinding the equal-division holes. At the same time, the floating support mechanism and the cycloidal wheel center hole positioning pin 13 also play an auxiliary positioning role, improving the processing accuracy.

[0033] In one embodiment of this utility model, multiple chip removal holes are provided on the lower connecting plate 2 in the fixed support mechanism, while no chip removal holes are provided on the base plate 1. The purpose of this arrangement is to allow the waste material and iron filings generated from the cycloidal wheel assembly 7 during the honing process to fall into the chip removal holes of the lower connecting plate 2, which facilitates the cleaning of iron filings after processing.

[0034] In one embodiment of this utility model, the fixed support mechanism is composed of a base plate 1, a lower connecting plate 2 and a lower support block 3 stacked on top of each other. This stacking method ensures the verticality of the fixture body when processing the cycloidal wheel assembly 7, and also prevents the honing head of the honing machine from directly contacting the worktable after grinding through the hole, which would cause damage to the honing head.

[0035] In one embodiment of this utility model, the cycloidal wheel center hole positioning pin 13 in the positioning mechanism is sleeved in the center hole of the positioning tray 6, and the cycloidal wheel assembly 7 has a center hole with the same diameter as the cycloidal wheel center hole positioning pin 13. The cycloidal wheel assembly 7 is sleeved on the cycloidal wheel center hole positioning pin 13 to complete the fixation and positioning of the cycloidal wheel assembly before processing.

[0036] In one embodiment of this utility model, the positioning mechanism includes a limiting block 10 with two threaded holes. The limiting block is threadedly connected to the positioning tray 6 by screws. The limiting screw 15 passing through the threaded hole is fixed with a nut in a direction parallel to the positioning tray 6 to assist in positioning the position of the positioning tray 6 and further fix the position of the cycloidal wheel.

[0037] In one embodiment of this utility model, the cover plate 9 in the positioning mechanism has three equally spaced holes for positioning when the honing machine processes the equally spaced holes. The cover plate 9 has a center hole and a threaded hole, which are positioned and connected to the positioning tray 6 through the upper support block 8, further fixing the position of the cycloidal wheel.

[0038] In one embodiment of this utility model, a fan-shaped hole corresponding to the shape of the anti-rotation block 12 is opened on the cycloidal wheel assembly 7. The cycloidal wheel assembly 7 is sleeved in the anti-rotation block 12. There is a small gap between the anti-rotation block 12 and the cycloidal wheel assembly 7, which allows the cycloidal wheel assembly 7 to make a small displacement in the horizontal direction during the processing, thus ensuring the processing accuracy of the cycloidal wheel assembly 7.

[0039] In one embodiment of this utility model, a threaded hole is provided on the positioning tray 6 in the fixture body, and the handle 5 is connected to the positioning tray 6 by the thread, so that the operator does not need to directly contact the positioning tray 6 when dragging it, which greatly increases the convenience of operation and ensures the safety of the operator during work.

[0040] In one embodiment of this utility model, the cover plate 9 and the upper support block 8 are connected by screws. By controlling the preload of the screws, a small gap is left between them, which allows the fixture to float slightly in the vertical direction during honing, thereby improving the honing accuracy.

[0041] In one embodiment of this utility model, a threaded hole is provided on the upper support block 8, and a nut is used to fix the limiting screw 11 passing through the hole to prevent the operator from dragging the positioning tray 6 out of the fixture body when dragging it.

[0042] In summary, the fixture device for the floating positioning honing cycloidal wheel with equally spaced holes according to this utility model embodiment has a simple structure and is easy to operate. It can effectively improve the clamping stability of the cycloidal wheel and the machining accuracy of the equally spaced holes, thereby improving the machining efficiency.

[0043] In the description of this specification, references to the terms "embodiment" or "an embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fixture device for floating positioning of a honing of an equidivision hole of a cycloid wheel, characterized in that: The clamp body, the cycloid wheel assembly, three sets of positioning mechanisms, the floating support mechanism and the fixed support mechanism are included, wherein The positioning tray for placing the cycloid wheel is arranged on the clamp body, and the positioning tray has a shape matched with the equally divided hole of the cycloid wheel; The cycloid wheel assembly is located in the clamp body, and the shape of the positioning tray is matched with the shape of the cycloid wheel; The three sets of positioning mechanisms are arranged on the clamp body, and the positioning mechanisms include a cycloid wheel center hole positioning pin, a limiting block and a cover plate, wherein The cycloid wheel center hole positioning pin is arranged on the center hole of the positioning tray; The limiting block is threadedly connected to the positioning tray; The cover plate is arranged above the upper support block; The floating support mechanism is a rotation-stopping block, which is threadedly connected to the positioning tray, and allows the clamp body to be slightly adjusted in floating during the honing process, so as to ensure the honing accuracy; The fixed support mechanism is connected to the clamp body at one end and connected to the honing machine workbench at the other end, and the fixed support mechanism includes a bottom plate, a lower connecting plate and a lower support block, wherein The bottom plate is fixed to the honing machine workbench by screwing; The lower connecting plate is connected to the bottom plate and the lower support block by screwing and cylindrical pins; The lower support block is connected to the clamp body and the lower connecting plate by screwing and cylindrical pins.

2. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: A small gap is arranged between the floating support mechanism and the cycloid wheel assembly, allowing the cycloid wheel assembly to be slightly displaced in the horizontal direction.

3. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: In the fixed support mechanism, a plurality of chip removal holes are arranged on the lower connecting plate for storing the waste and iron filings falling from the clamp body.

4. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: The fixed support mechanism ensures the perpendicularity of the clamp body during processing by the mutual superposition of the bottom plate, the lower connecting plate and the lower support block, and also prevents the honing head from directly contacting the workbench during processing.

5. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: The cycloid wheel center hole positioning pin in the three sets of positioning mechanisms is sleeved on the center hole of the positioning tray.

6. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: The limiting block and the cover plate in the three sets of positioning mechanisms, wherein The limiting block is arranged with a screw and a nut in the horizontal direction for assisting in positioning the position of the positioning tray, further fixing the position of the cycloid wheel, and the cover plate is provided with three equally divided holes for positioning when the honing machine processes the equally divided hole, and the center hole and the threaded hole of the cover plate are positioned and connected with the positioning tray through the upper support block, further fixing the position of the cycloid wheel.

7. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: The surface of the cycloid wheel assembly is respectively provided with a center hole and a sector hole corresponding to the rotation-stopping block.

8. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that: A handle is arranged on the clamp body for operating the positioning tray during processing, and a plurality of chip removal holes are arranged on the clamp body for discharging chips during honing.

9. The fixture device for equally dividing the hole of the floating positioning orbiting wheel honing cycloid according to claim 1, characterized in that The cover plate and the upper support block are provided with a small gap, allowing the clamp body to be slightly displaced in the vertical direction.

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