Model racing vehicle wheel turning tool

Abstract

The invention discloses a model racing vehicle wheel turning tool which comprises a turning tool arm, an elastic threaded hole in the turning tool arm, a feeding screw rod matched with the elastic threaded hole, a feeding support, a bearing, a feeding hand wheel and a feeding pointer. The feeding support provides an installation hole for the feeding screw rod, the inner ring and the outer ring of the bearing are connected with a linear cylindrical guide rail and the feeding support respectively, the feeding hand wheel is concentrically connected with the feeding screw rod, and the feeding pointer is fixed to the feeding support to point feeding scales. An elastic seam is designed on the side face of the elastic threaded hole to control the inner diameter of the threaded hole, and therefore the effects of eliminating transmission backlash and achieving feeding locking are achieved with low cost; the pointing scales are designed on the end face of the feeding hand wheel, and a knurl is designed on the circumferential face, so that a handle on the end face of the feeding hand wheel in the prior art is omitted; accordingly, the tool structure is simplified, reliability is improved, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of turning the circumferential surface of tires on wheels, in particular to the field of turning tires of model racing cars. Background technique [0002] Model racing cars have high requirements on the stability of the tire contact area and the radial runout of the tire circumferential surface. These two parameters affect the grip of the tire and the ride comfort. However, there are parting lines and burrs on the surface of new tires. During the high-speed rotation of the tires during model racing competitions, when the parting lines and burrs on the tire surface contact the ground, they will slightly lift the tires, reducing the ground contact area, thus The grip of the tire is reduced; and because the tire and the rim are randomly assembled, the accumulation of errors between the two will cause a large radial runout error on the tire circumferential surface. The rolling radius is different, which affects the ride ...

AI Technical Summary

Problems solved by technology

However, there are parting lines and burrs on the surface of new tires. During the high-speed rotation of the tires during model racing competitions, when the parting lines and burrs on the tire surface contact the ground, they will slightly lift the tires, reducing the ground contact area, thus The grip of the tire is reduced; and because the tire and the rim are randomly assembled, the accumulation of errors between the two will cause a large radial runout error on the tire circumferential surface. The rolling radius is different, which affects the ride comfort of the model car

[0003] The existing technology is based on the structure of the ordinary lathe, and the design is reduced and simplified to be a lathe that can turn the wheel assembly of the model racing car. The feed adjustment mechanism of the turning tool is based on the screw transmission mechanism of the ordinary lathe. There are two solutions for the gap: one is not to deal with it, and the empty back generated by this gap should be considered when turning the handwheel, which is easy to cause errors; the other is to add a nut, and the two nuts are stretched by tension. Eliminate thread backlash, a costly solution and excessive spring tension can cause poor movement

In the prior art, in order to realize the locking of the feed mechanism, a locking mechanism is added to the guide rail or a linear bearing with its own locking mechanism is used, resulting in an increase in cost

In addition, the feed rate indicating device in the prior art is designed with a scale on the circumference of the handwheel, and can only be operated by additionally designing a crank handle on the end surface of the handwheel, which leads to an increase in cost.

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