Method for manufacturing transverse elements for a drive belt
A technology of transverse elements and transmission belts, applied in applications, belts, V-belts, etc., can solve problems such as chaotic winding, deformation of transverse elements, and easy damage
Active Publication Date: 2013-04-24
ROBERT BOSCH GMBH
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Problems solved by technology
However, due to the fact that the transverse elements will bend under the force exerted in the layers of the helical turns and between the layers, will become chaotically wound and / or will even pass through the The shear breaks away from the frame part of the strip, so said variants of known manufacturing methods appear to be only theoretical references
Therefore, it is noted that after die-cutting the substrate is still relatively soft, at least yet to harden, so that the transverse elements may deform and / or become relatively easily damaged
Method used
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[0016] figure 1 Shown are the main parts of a known continuously variable transmission commonly used in the drive line of a motor vehicle between the engine and its driven wheels. The transmission comprises two pulleys 1, 2, each provided with two pulley discs 4, 5, between which there is a drive belt 3 of the so-called push-belt type for transferring the rotational movement M and the accompanying torque is transmitted from one of the pulleys 1,2 to the other 2,1. The pulley discs 4, 5 are shaped substantially conical and at least one pulley disc 4 is integrated into the transmission axially movably along a respective pulley shaft 6, 7, both discs 4, 5 being placed in place. On the pulley shaft 6,7. The transmission generally also comprises an activation mechanism which applies an axially directed clamping force to said at least one movable disc 4 directed towards the corresponding other axially fixed pulley disc 5 so that the drive belt 3 is clamped Immediately between the...
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Method for manufacturing transverse elements (32) for a drive belt (3) comprising the process steps of feeding a strip (50) of steel base material for the transverse 5 elements (32) to a blanking device (70), cutting-out the transverse elements (32) from the strip (50) nearly completely, leaving the elements (32) connected to a remaining frame part (52) of the strip (50) through a connecting tab (51), hardening the transverse elements (32) while connected to the frame part (52) of the strip (50), and of completely separating the transverse elements (32) from the frame part (52) of the (10) strip (50) by cutting through the connecting tab (51). According to the invention, at some stage after the process step of cutting-out the transverse elements (32) has been completed, the strip (50) is cut into strip sections (53) that each include a section of the frame part (52) and at least one whole transverse element (32) connected thereto.
Description
technical field [0001] The invention relates to a method for manufacturing a transverse element member of a flexible drive belt. The transmission belt is mainly used as a mechanism for power transmission between two adjustable pulleys of a known continuously variable transmission (continuously variable transmission), which is mainly used in motor vehicles. Drive belts of this type are known today and are described, for example, in European patent publication EP-A-1554507. Background technique [0002] Said known drive belt consists of a large number of relatively thin transverse metal elements slidably arranged on two stacked endless stretchable means of the drive belt, each of which consists of a set of mutually A composition of nested flat and thin metal rings, which alternatively represent a strip. Said rings are generally made of maraging steel which combines in particular (a / o) high tensile strength and good resistance against tensile stress and bending fatigue. The ...
Claims
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IPC IPC(8): B21D53/14F16G5/16
CPCF16G5/16
Inventor K·聪E·范丁特L·H·R·M·普林森
Owner ROBERT BOSCH GMBH