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Mold and method for manufacturing gears with spherical toothing

A mold and gear technology, applied in the field of manufacturing such gears, can solve the problems of adjusting the complex structure of the driving device, and achieve the effect of compact structure

Inactive Publication Date: 2019-07-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the adjusting drives for moving the individual mold parts in different directions are relatively complex in design

Method used

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  • Mold and method for manufacturing gears with spherical toothing
  • Mold and method for manufacturing gears with spherical toothing
  • Mold and method for manufacturing gears with spherical toothing

Examples

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Embodiment Construction

[0027] exist figure 1 shows a gear 1 configured as a spur gear, as it is used in particular as a component of a transmission drive in a convenience drive of a motor vehicle. The comfort drive is understood within the scope of the present invention to be a sliding sunroof drive, a seat adjustment drive, a window lift drive or the like. However, the invention should not be restricted to such an application of the toothed wheel 1 , but should be applicable to any desired toothed wheel 1 or to very different uses.

[0028] On its outer circumference, the gear wheel 1 has a spherical toothing 2 which is formed symmetrically to the center surface 3 of the gear wheel 1 . Furthermore, the gearwheel 1 has a through-opening 5 concentric with its axis of rotation 4 for the rotatable mounting of the gearwheel 1 . The spherical toothing 2 is also formed on a toothed ring 7 that is increased in height relative to the central region 6 .

[0029] overview figure 2 and image 3 , the mai...

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Abstract

The invention relates to a die (10, 10a, 10b) for making a gear (1) with sphere teeth (2); the die comprises die elements capable of relatively moving; the die elements are used for forming a cavity (11) by using liquid plastic under pressure in a first position for forming the gear (1), and are arranged at intervals in a second position allowing the gear to release from the cavity (11); a plurality of tooth segments (20, 20a, 20b) are directly connected in a peripheral direction in the first position and arranged respectively around axis (22, 22a, 22b), thus forming the sphere teeth (2), and are used for respectively forming at least one tooth of the sphere teeth (2); the tooth segments release the cross section of the sphere teeth in a rotary axis (4) extending die releasing direction parallel to the gear (1); in the second position relative to the first position, the tooth segments (20, 20a 20b) are radically rotated outwards in the axis (22, 22a, 22b).

Description

technical field [0001] The invention relates to a mold for producing gear wheels with spherical toothing. The invention also relates to a method for producing such a gear, a mold assembly comprising a plurality of molds according to the invention, and a gear manufactured by means of a mold according to the invention. Background technique [0002] Dies for producing gear wheels with spherical toothing are already known from practice. It is used to produce spur gears made of plastic, which are used, for example, as components of transmission drives in convenience drives of motor vehicles. Within the scope of the present invention, a comfort drive is to be understood as an exemplary and non-restrictive drive for a sliding sunroof, a seat adjustment drive, a window lift drive or the like. The advantage of such a spur gear with spherical toothing in the circumferential direction with respect to its axis of rotation is that the spherical toothing achieves a relatively low surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/44
CPCB29C45/4471B29L2015/003F16H55/22
Inventor W.奥克斯
Owner ROBERT BOSCH GMBH
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