Small-modulus shaft gear hobbing anti-rotation tool
By designing a detachable anti-rotation fixture with a semi-circular pin structure, the problem of sun gear slippage in small module gear hobbing was solved, achieving stable machining and cost reduction.
Patent Information
- Application Number
- CN202520226213.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-13
AI Technical Summary
When hobbing small-module shaft gears, the sun gear is prone to slippage, leading to poor gear machining. Existing tooling is difficult to effectively prevent rotation and is costly.
An anti-rotation fixture consisting of a top and a backing is designed. The backing has a frustum-shaped central hole inside, a fixing hole on the side, and a circular opening at the top with a semi-circular pin. It is fixed to the top with bolts to prevent the sun gear from slipping and is removable and replaceable.
It effectively prevents the sun gear from slipping during gear hobbing, ensuring stable operation and reducing operating costs.
Smart Images
Figure CN223718479U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a small modulus shaft tooth hobbing anti -rotation frock, apply to small modulus shaft tooth hobbing process. BACKGROUND
[0002] The domestic bionic dog has developed rapidly in recent years and is in a rapid growth stage, and is widely applied in the fields of national defense and military, industry, education and entertainment, has broad application scenes, with the development of artificial intelligence, machine learning, sensor technology and robot autonomous navigation technology, the performance of the robot dog will be further improved, and the robot dog will develop towards higher autonomy and intelligence. Meanwhile, with the improvement of performance, the application scene will also be continuously expanded, and reducing cost is one of the current key efforts.
[0003] The joint of the bionic robot dog driven by the motor has the advantages of low manufacturing cost, high precision and small noise, and in the case of meeting the use requirements, the volume and weight are reduced as much as possible, the joint needs to be lightened, a smaller modulus is adopted, and the transmission gear is smaller. In order to prevent sliding, an arc groove is designed on the sun gear (shaft tooth). Since the outer circle diameter of the sun gear hobbing clamping is only 5mm, the clamping area is small, and the gear is prone to sliding in the hobbing machining process, resulting in poor gear machining. UTILITY MODEL CONTENTS
[0004] The utility model discloses a simple and practical, anti -rotation, stable, low -cost small modulus shaft tooth hobbing anti -rotation frock is provided to overcome the above -mentioned insufficient of prior art.
[0005] The utility model discloses the technical scheme that the above problem is solved is: a small modulus shaft tooth hobbing anti -rotation frock, including the centre and the back mountain, the back mountain is fixed on the centre,
[0006] The conical middle hole is arranged in the back mountain, the side of the back mountain is provided with a plurality of fixed holes, the top of the back mountain is a circular opening, and the circular opening is provided with a convex semicircular pin.
[0007] The centre includes a centre head, a centre boss and a centre taper handle.
[0008] The centre boss is fixed on the centre taper handle, and the centre head passes through the middle hole.
[0009] The back mountain of the utility model is fixed on the centre boss through a bolt.
[0010] The back mountain of the utility model is designed as a semicircular pin structure, matched with the arc groove of the sun gear, and can provide driving force through the centre to prevent the sun gear from sliding during hobbing. The back mountain is designed to be detachable, and is fixed on the centre boss through a bolt. When wear occurs, the back mountain can be replaced in time, and the use cost is lower than that of a transmission integrated frock.
[0011] Compared with the prior art, the utility model has the following advantages and effects: 1, adopt the hill half circle pin and sun round arc groove match and, prevent the sun wheel rotation when processing, working condition stable, 2, hill detachable design, convenient to wear timely replacement, low cost. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 It is the structure schematic drawing of the utility model embodiment.
[0013] Fig. 2 It is the hill structure schematic drawing of the utility model.
[0014] Fig. 3 It is the cross section structure schematic drawing of the hill of the utility model embodiment.
[0015] In the drawing: center 1, center head 11, center boss 12, center taper handle 13, hill 2, middle hole 21, fixed hole 22, round opening 23, half circle pin 24, sun wheel 3. DETAILED DESCRIPTION
[0016] The utility model will be further explained in detail in combination with the drawings and through the embodiment, and the following embodiment is the explanation of the utility model, and the utility model is not limited to the following embodiment.
[0017] Referring to Figs. 1-3 , the small modulus shaft tooth hobbing anti-rotation tool in the embodiment includes center 1 and hill 2, and the hill 2 is fixed on the center 1, the conical middle hole 23 is arranged in the hill 2, a plurality of fixed holes 22 are arranged on the side of the hill 2, the top of the hill 2 is a round opening 23, and the half circle pin 24 is arranged on the round opening 23; the center 1 includes center head 11, center boss 12 and center taper handle 13; the center boss 12 is fixed on the center taper handle 13, and the center head 11 passes through the middle hole 21.
[0018] The hill 2 in the embodiment is fixed on the center boss 12 through a bolt, can be replaced in time when wearing, and the use cost is lower compared with the transmission integrated tool.
[0019] In the hobbing processing of the embodiment, the half circle pin 24 of the hill 2 is matched with the round arc groove of the sun wheel 3, the round arc groove of the sun wheel 3 is aligned with the half circle pin 24 of the hill 2 and is placed, the center head 11 of the tail center 1 passes through the middle hole 21 and the round opening 23 and is tightly pressed to the inner hole of the sun wheel 3, and the sun wheel 3 clamping can be completed.
Claims
1. A small modulus face gear hobbing anti-rotation tool, characterized in that: it comprises a top center and a backstop, and the backstop is fixed on the top center; a conical middle hole is arranged in the backstop, a plurality of fixing holes are arranged on the side of the backstop, the top of the backstop is a circular opening, and a convex semicircular pin is arranged on the circular opening; the top center comprises a top center head, a top center boss and a top center taper handle; the top center boss is fixed on the top center taper handle, and the top center head penetrates the middle hole. The backstop is fixed on the top center boss by a bolt. 2. The small module face gear hobbing anti-rotation tooling of claim 1, wherein: