Large-diameter-width-ratio gear hobbing clamping tool

Abstract

The utility model provides a large-diameter-width-ratio gear hobbing clamping tool. The large-diameter-width-ratio gear hobbing clamping tool is characterized in that a pull rod is fixed to the upper surface of a workbench; the mould is a hollow cylinder with a bottom surface, the mould is fixed on the workbench, a through hole is formed in the axis of the bottom surface of the mould, and the pull rod penetrates through the through hole; the sleeve with the same height as the mould is sleeved outside the mould; a shaft hole of a workpiece gear is sleeved outside the pull rod; the workpiece gear is horizontally placed on the upper end surfaces of the sleeve and the placenta; the shaft hole of the pressing plate is sleeved outside the pull rod; the pressing plate is horizontally placed on the upper end face of the workpiece gear; the shaft hole of the conical pressing plate is sleeved outside the pull rod; the conical pressing plate is horizontally arranged on the upper end surface of the pressing plate; the top face of the conical pressing plate is provided with a coaxial conical recess, a conical nut with a conical protrusion at the top end is screwed into the threaded section at the tail end of the pull rod, the conical protrusion is embedded into the conical recess, and the conical pressing plate is pressed by the conical nut. The large-diameter-width-ratio cake-shaped gear clamping device can reliably clamp a large-diameter-width-ratio cake-shaped gear, so that the cake-shaped gear is small in deformation during hobbing cutting machining, and the hobbing tooth direction precision of the gear is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of tooling, in particular to a tooling for clamping gear hobbing with a large diameter-width ratio. Background Art

[0002] Wind power generation has developed rapidly in recent years due to its advantages such as zero pollution and low construction cost.

[0003] In wind turbine gearboxes, the pancake-shaped gears have a relatively large diameter-width ratio, and the axial force is relatively large during gear hobbing. The existing clamping tooling causes large deformation of the pancake-shaped gears with a large diameter-width ratio, resulting in poor gear hobbing tooth accuracy. Utility Model Content

[0004] The utility model provides a gear hobbing clamping tool with a large diameter-width ratio, which aims to solve the disadvantages of the prior art and reliably clamp a pancake-shaped gear with a large diameter-width ratio so that the gear has a small deformation during hobbing and the gear hobbing tooth direction accuracy is guaranteed.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The large diameter-width ratio gear hobbing clamping tool is characterized by:

[0007] The pull rod is fixed to the upper surface of the workbench;

[0008] The jig is a hollow cylindrical body with a bottom surface, the jig is fixed on a workbench, a through hole is opened at the axis center of the bottom surface of the jig, and the pull rod passes through the through hole;

[0009] A sleeve having the same height as the tire is placed outside the tire;

[0010] The shaft hole of the workpiece gear is sleeved outside the pull rod, and the workpiece gear is horizontally placed on the upper end surface of the sleeve and the placenta;

[0011] The shaft hole of the pressing plate is sleeved outside the pull rod, and the pressing plate is horizontally placed on the upper end surface of the workpiece gear;

[0012] The axial hole of the conical pressure plate is sleeved outside the pull rod, and the conical pressure plate is horizontally placed on the upper end surface of the pressure plate;

[0013] The conical pressure plate, pressure plate, workpiece gear, sleeve, jig and pull rod are coaxial;

[0014] The top surface of the conical pressure plate has a coaxial conical depression, a conical nut with a conical protrusion on the top is screwed into the threaded section of the tail end of the pull rod, the conical protrusion is embedded in the conical depression, the conical nut presses the conical pressure plate, the conical pressure plate presses the pressure plate, the pressure plate presses the workpiece gear, the workpiece gear presses the sleeve and the jig.

[0015] The pull rod head of the pull rod is downwardly inserted into a T-shaped groove clamped on the upper surface of the workbench.

[0016] The top edge of the mold is provided with an annular convex wall, and a through hole is provided on the annular convex wall. The connecting screw passes through the through hole and is screwed into the screw hole provided on the upper surface of the workbench to fix the mold on the workbench.

[0017] The through holes are evenly distributed on the circumference of the annular protrusion.

[0018] The utility model is beneficial in that:

[0019] The middle part of the pancake-shaped gear with a large diameter-to-width ratio, that is, the workpiece gear, of the utility model is supported by the jig, and the periphery is supported by the sleeve. During processing, the deformation caused by the axial force during gear hobbing cutting is small, thereby ensuring the gear hobbing tooth direction accuracy. The cooperation between the conical protrusion of the conical nut and the conical depression of the conical pressure plate increases the contact area, and the clamping is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solution of the utility model, the following will briefly introduce the drawings required for the description. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work. In order to facilitate the understanding of the utility model, the following will be combined with the drawings and specific embodiments to explain the utility model in more detail.

[0023] The use process of the utility model tooling: Figure 1 As shown:

[0024] The pull rod head 61 of the pull rod 6 is inserted downward into the T-shaped groove 91 clamped on the upper surface of the workbench 9;

[0025] The jig 5 is a hollow cylindrical body with a bottom surface 51. The bottom surface 51 has a through hole 52 at its axis. The top edge of the jig 5 has an annular convex wall 53. The annular convex wall 53 has four through holes 54 evenly distributed around the circumference. The pull rod 6 passes through the through hole 52 of the bottom surface 51 of the jig 5. The connecting screw 8 passes through the through hole 54 and is screwed into a screw hole 92 formed on the upper surface of the workbench 9 to fix the jig 5 to the workbench 9.

[0026] A sleeve 4 having the same height as the mold 5 is sleeved outside the mold 5;

[0027] The shaft hole 31 of the workpiece gear 3 is sleeved outside the pull rod 6, and the workpiece gear 3 is horizontally placed on the upper end surfaces of the sleeve 4 and the placenta 5;

[0028] The shaft hole 21 of the pressing plate 2 is sleeved outside the pull rod 6, and the pressing plate 2 is horizontally placed on the upper end surface of the workpiece gear 3;

[0029] The axial hole 11 of the conical pressing plate 1 is sleeved outside the pull rod 6 , and the conical pressing plate 1 is horizontally placed on the upper end surface of the pressing plate 2 .

[0030] The conical pressure plate 1, the pressure plate 2, the workpiece gear 3, the sleeve 4, the jig 5 and the pull rod 6 are coaxial.

[0031] The top surface of the conical pressure plate 1 has a coaxial conical recess 11, a conical nut 7 with a conical protrusion 71 on the top is screwed into the threaded section at the tail end of the pull rod 6, the conical protrusion 71 is embedded in the conical recess 11, the conical nut 7 presses the conical pressure plate 1, the conical pressure plate 1 presses the pressure plate 2, the pressure plate 2 presses the workpiece gear 3, the workpiece gear 3 presses the sleeve 4 and the jig 5 on the workbench 9.

[0032] The gear hobbing process can be arranged.

[0033] In this way, the middle part of the pancake-shaped gear with a large diameter-width ratio, that is, the workpiece gear 3, is supported by the jig 5, and the periphery is supported by the sleeve 4. The deformation caused by the axial force during the gear hobbing cutting process is small, thereby ensuring the gear hobbing tooth accuracy. The cooperation between the conical protrusion 71 of the conical nut 7 and the conical recess 11 of the conical pressure plate 1 increases the contact area and makes the clamping more stable.

[0034] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more centered elements can exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more centered elements can exist between them. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A large diameter-width ratio gear hobbing clamping tool, characterized by: The pull rod is fixed on the upper surface of the workbench; the jig is a hollow cylindrical body with a bottom surface, the jig is fixed on the workbench, and a through hole is opened at the axis center of the bottom surface of the jig, and the pull rod passes through the through hole; a sleeve with the same height as the jig is sleeved outside the jig; the axial hole of the workpiece gear is sleeved outside the pull rod, and the workpiece gear is placed horizontally on the upper end surface of the sleeve and the placenta; the axial hole of the pressure plate is sleeved outside the pull rod, and the pressure plate is placed horizontally on the upper end surface of the workpiece gear; the axial hole of the conical pressure plate is sleeved outside the pull rod, and the conical pressure plate is placed horizontally on the upper end surface of the pressure plate; the conical pressure plate, pressure plate, workpiece gear, sleeve, jig, and pull rod are coaxial; the top surface of the conical pressure plate has a coaxial conical depression, a conical nut with a conical protrusion on the top is screwed into the threaded section of the tail end of the pull rod, the conical protrusion is embedded in the conical depression, the conical nut presses the conical pressure plate, the conical pressure plate presses the pressure plate, the pressure plate presses the workpiece gear, the workpiece gear presses the sleeve and the jig.

2. The large-aspect-ratio gear hobbing clamping tool as claimed in claim 1, characterized in that: The pull rod head of the pull rod is downwardly inserted into a T-shaped groove clamped on the upper surface of the workbench.

3. The large-aspect-ratio gear hobbing clamping tool as claimed in claim 1, characterized in that: The top edge of the mold is provided with an annular convex wall, and a through hole is provided on the annular convex wall. The connecting screw passes through the through hole and is screwed into the screw hole provided on the upper surface of the workbench to fix the mold on the workbench.

4. The large-aspect-ratio gear hobbing clamping tool as claimed in claim 3, characterized in that: The through holes are evenly distributed on the circumference of the annular protrusion.

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