Hobbing clamp for disc gear

Abstract

The utility model discloses a disc-shaped gear hobbing clamp which comprises an upper positioning seat, a lower positioning seat and a lower positioning disc, the upper positioning seat comprises an upper connector, the upper positioning disc comprises a sleeve part and a lower pressing part, and the upper positioning disc is movably connected to the upper connector through the sleeve part; the lower connecting seat comprises a lower seat body, a lower connecting sleeve is fixed on the lower seat body, a hobbing cone core is fixedly connected to the top of the lower connecting sleeve, a guide hole is formed in the hobbing cone core, and a lower positioning disc is further fixed to the top of the hobbing cone core; a taper core head of the hobbing taper core is sleeved with an expansion sleeve, and the expansion sleeve is higher than the taper core head; and the pull rod assembly comprises a pull rod body, the pull rod body penetrates through the hobbing conical core, a pull rod is movably connected in the lower connecting sleeve, and the lower connecting sleeve is in contact connection with the expansion sleeve. The gear hobbing clamp is simple in structure, accurate positioning of the disc-shaped gear can be achieved, gear hobbing machining efficiency is improved, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of disc gears, and particularly relates to a hobbing fixture for disc gears. Background Art

[0002] When manufacturing and assembling mechanical components, especially in the assembly of gear systems, high-precision positioning is usually required to ensure the performance and reliability of the final product. Traditional positioning fixtures have some limitations in ensuring the accurate position of components, especially when dealing with disc gears. Some existing technologies involve the use of threaded devices or other manual adjustment methods. However, these methods may lead to instability or inaccurate positioning during the assembly process.

[0003] In the prior art, the design and use of fixtures usually rely on threaded devices or complex mechanical systems, which may lead to an increase in production costs and limit the scope of application of the fixtures. In addition, some fixtures may cause deformation or damage to components when tightening them, affecting the quality of the final product. Summary of the Utility Model

[0004] To solve one or more of the above defects in the prior art, the utility model provides a hobbing fixture for disc gears. The hobbing fixture has a simple structure, can achieve precise positioning of the disc gear, improves the hobbing processing efficiency, and reduces costs.

[0005] To achieve the above object, the utility model provides a hobbing fixture for disc gears, comprising:

[0006] An upper positioning seat, the upper positioning seat includes an upper connecting head, a return spring is sleeved outside the upper connecting head, the upper connecting head is also fixedly connected with an upper connecting sleeve, the return spring is located between the upper connecting head and the upper connecting sleeve, and an upper positioning disc is movably connected to the upper connecting head. The upper positioning disc includes a sleeve portion and a pressing portion, and is movably connected to the upper connecting head through the sleeve portion;

[0007] A lower positioning seat, the lower positioning seat includes a lower seat body, a lower connecting sleeve is fixed on the lower seat body, a hobbing cone core is fixedly connected to the top of the lower connecting sleeve, a guiding hole is opened in the hobbing cone core, a lower positioning disc is fixedly connected to the top of the hobbing cone core, and a expanding sleeve is sleeved outside the cone head of the hobbing cone core, and the height of the expanding sleeve is higher than the cone head;

[0008] A pull rod assembly, the pull rod assembly includes a pull rod body, the pull rod body passes through the hobbing cone core, the pull rod head at the top of the pull rod body is in contact connection with the expanding sleeve, and a pull rod is movably connected in the lower connecting sleeve, and the lower connecting sleeve is in contact connection with the expanding sleeve.

[0009] Furthermore, a threaded connection is provided at the bottom of the upper connector to prevent the upper positioning plate from falling out.

[0010] Furthermore, the sleeve portion of the upper positioning plate has an upper step hole and a lower step hole, and the pressing portion is a bowl-shaped cover.

[0011] Furthermore, a gasket is connected to the gear rolling cone core, and the gasket is located below the expansion sleeve.

[0012] Furthermore, a first guide groove and a second guide groove are formed at the bottom of the expansion sleeve, and a guide plate matching the first guide groove and the second guide groove is fixed on the gasket.

[0013] The beneficial effects of the utility model are:

[0014] First, the gear hobbing fixture has a simple structure and can achieve precise positioning of the disc gear, thereby improving assembly efficiency, reducing costs, and reducing the skill requirements for operators;

[0015] Second, since a return spring is connected to the upper positioning seat, when the disc gear is pressed down, even if there is a slight error on the surface of the disc gear, the surface of the disc gear can be firmly pressed to ensure stability during processing;

[0016] Third, by connecting a gasket to the cone of the gear hobbing, the gasket matches the expansion sleeve, so that the expansion sleeve will not rotate when tightened, causing scratches on the inner hole of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This utility model Figure 1 A magnified view of part A;

[0019] Figure 3 This utility model Figure 1 A magnified view of part B;

[0020] Figure 4 It is a structural diagram of the expansion sleeve of the utility model;

[0021] Figure 5 It is a structural diagram of the gasket of the utility model.

[0022] In the figure: 1. Upper positioning seat; 2. Upper connector; 3. Return spring; 4. Upper connecting sleeve; 5. Upper positioning disc; 6. Sleeve part; 7. Pressing part; 8. Lower positioning seat; 9. Lower seat body; 10. Lower connecting sleeve; 11. Hobbing cone core; 12. Guide hole; 13. Lower positioning disc; 14. Expansion sleeve; 15. Pull rod body; 16. Pull rod head; 17. Anti-disengagement disc; 18. First guide groove; 19. Guide plate; 20. Gasket; 21. Spur gear; 22. Cone core head Specific embodiments

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] See Figures 1 to 5 A spur gear hobbing fixture as shown, comprising:

[0025] An upper positioning seat 1, the upper positioning seat 1 includes an upper connector 2, a return spring 3 is sleeved outside the upper connector 2, the upper connector 2 is further fixedly connected with an upper connecting sleeve 4, the return spring 3 is located between the upper connector 2 and the upper connecting sleeve 4, and an upper positioning disc 5 is movably connected to the upper connector 2. The upper positioning disc 5 includes a sleeve part 6 and a pressing part 7, and is movably connected to the upper connector 2 through the sleeve part 6;

[0026] A lower positioning seat 8, the lower positioning seat includes a lower seat body 9, a lower connecting sleeve 10 is fixed on the lower seat body 9, a hobbing cone core 11 is fixedly connected to the top of the lower connecting sleeve 10, a guide hole 12 is provided in the hobbing cone core 11, a lower positioning disc 13 is further fixed to the top of the hobbing cone core 11, an expansion sleeve 14 is sleeved outside the cone core head 22 of the hobbing cone core 11, and the height of the expansion sleeve 14 is higher than that of the cone core head 22;

[0027] A pull rod assembly, the pull rod assembly includes a pull rod body 15, the pull rod body 15 passes through the hobbing cone core 11, the pull rod head 16 at the top of the pull rod body 15 is in contact connection with the expansion sleeve 14, a pull rod is movably connected in the lower connecting sleeve 10, and the lower connecting sleeve 10 is in contact connection with the expansion sleeve 14.

[0028] The process of using the present utility model is as follows. When it is necessary to position the disc gear 21, first pass the inner hole of the disc gear 21 through the hobbing mandrel and the expansion sleeve 14, so that it is supported and connected to the lower positioning disc 13. Subsequently, the upper positioning seat 1 moves downward under the action of the power structure. During the downward movement, the pressing part 7 thereon presses the gear. When pressing, since the upper positioning disc 5 is movably connected to the upper positioning head and a return spring 3 is connected to the upper positioning head, the upper positioning disc 5 can move and float according to the contour of the gear surface. In this way, even when the gear surface is uneven, stable pressing can be achieved. After the upper surface of the gear is pressed, start the power structure below the pull rod assembly, so that the pull rod body 15 moves downward, driving the pull rod head 16 to move downward. When the pull rod head 16 moves downward, it will squeeze the expansion sleeve 14 downward, thereby expanding and tightening the inner hole of the gear to complete the positioning of the gear. After the gear is positioned, hobbing processing can be carried out on it.

[0029] Further, a retaining disc 17 for preventing the upper positioning disc 5 from coming off is threadedly connected to the bottom of the upper connecting head 2. Specifically, a retaining disc 17 is threadedly connected to the bottom of the upper connecting head 2 of the present utility model, and the retaining disc 17 can ensure that the upper positioning disc 5 does not come off during the up and down movement.

[0030] Further, the sleeve part 6 of the upper positioning disc 5 has an upper stepped hole and a lower stepped hole, and the pressing part 7 is a bowl-shaped cover. Specifically, the sleeve part 6 of the upper positioning disc 5 has an upper stepped hole and a lower stepped hole, wherein the retaining disc 17 can move in the lower stepped hole, and at the same time, the bottom of the lower stepped hole can be engaged with the retaining disc 17, thereby preventing the upper positioning disc 5 from coming off.

[0031] Further, a gasket 20 is also connected to the hobbing taper core 11, and the gasket 20 is located below the expansion sleeve 14. Specifically, in order to prevent the expansion sleeve 14 from directly acting on the hobbing taper core 11 when pressing downward and causing extrusion damage, a gasket 20 is also connected to the hobbing taper core 11. If the gasket 20 is damaged, it can be directly replaced. At the same time, a guide plate 19 is fixed on the gasket 20, and the guide plate 19 matches the first guide groove 18 and the second guide groove opened at the bottom of the expansion sleeve 14, so that the expansion sleeve 14 will not rotate and cause scratches on the inner hole of the gear.

[0032] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present application based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A hobbing fixture for a disc gear, characterized in that Comprising: An upper positioning seat, the upper positioning seat includes an upper connector, a return spring is sleeved outside the upper connector, the upper connector is further fixedly connected with an upper connecting sleeve, the return spring is between the upper connector and the upper connecting sleeve, an upper positioning disc is movably connected to the upper connector, the upper positioning disc includes a sleeve portion and a pressing portion, and is movably connected to the upper connector through the sleeve portion; A lower positioning seat, the lower positioning seat includes a lower seat body, a lower connecting sleeve is fixed on the lower seat body, a gear-rolling taper core is fixedly connected to the top of the lower connecting sleeve, a guiding hole is provided in the gear-rolling taper core, a lower positioning disc is further fixed on the top of the gear-rolling taper core, a expanding sleeve is sleeved outside the taper core head of the gear-rolling taper core, and the height of the expanding sleeve is higher than the taper core head; A pull rod assembly, the pull rod assembly includes a pull rod body, the pull rod body passes through the gear-rolling taper core, the pull rod head at the top of the pull rod body is in contact connection with the expanding sleeve, a pull rod is movably connected in the lower connecting sleeve, and the lower connecting sleeve is in contact connection with the expanding sleeve.

2. The hob fixture for disk gear according to claim 1, characterized in that, A retaining disc for preventing the upper positioning disc from disengaging is threadedly connected to the bottom of the upper connector.

3. The hob fixture for a disk gear according to claim 2, characterized in that, The sleeve portion of the upper positioning disc has an upper stepped hole and a lower stepped hole, and the pressing portion is a bowl-shaped cover.

4. The hob fixture for disk gear according to claim 3, characterized in that, A gasket is further connected to the gear-rolling taper core, and the gasket is located below the expanding sleeve.

5. The hob fixture for a disk gear according to claim 4, wherein The bottom of the expanding sleeve is provided with a first guiding groove and a second guiding groove, and guiding plates matching the first guiding groove and the second guiding groove are fixed on the gasket.

Images