JPH033819B2 - - Google Patents

Description

Detailed Description of the Invention <Technical Classification> The disclosed technology belongs to the technical field of manufacturing a piece that is inserted into an endless carrier of a metal belt stretched between a pair of V-shaped pulleys and used for torque transmission.

<Explanation of the gist> Accordingly, in this invention, all the presser pieces that are inserted and connected to the endless carrier of the metal belt that is wound around the V-shaped pulley and that are adjacent to each other are securely in contact with the V-shaped pulley at the contact surface thereof. This invention relates to a method of manufacturing an endless carrier presser piece, and in particular, the piece is precision punched, as sintered, or machined after the material is provided, and the abutting surface of the piece against the V-shaped pulley is roughened. After forming an uneven part on the corresponding contact surface,
The presser piece is attached to a V-shaped pulley via an endless carrier, a force is applied in a direction to separate the pulley, tension is applied to the metal belt, and then the pulley is driven, thereby connecting the presser piece and the V-shaped pulley. <Prior art> This invention relates to a method of manufacturing an endless carrier presser foot piece for a metal belt in which the two are mated by rubbing together.As is well known, belt pulleys are widely used in torque transmission mechanisms. However, in order to compensate for the disadvantages of conventional cloth or rubber belts in terms of conductive properties such as elasticity and breakability, durability, etc., one belt is combined with multiple flat sheet metal belt packs, or
Two belt-shaped endless carriers have come into use and are used, for example, in continuous transmission devices such as those described in Published Patent Publication No. 55-6783, the general form of which is As shown in Figures 1 and 2, V
A metal belt 3 is stretched over the type pulleys 1 and 2 to transmit torque.

The metal belt 3 is connected to an endless carrier 4.
are inserted into and engaged with carrier insertion grooves 6, 6, which are provided on both sides of the presser pieces 5, 5, . . .

As shown in FIGS. 3 and 4, the presser foot 5 is
When sandwiched between the mold pulleys 1 and 2, in terms of torque transmission efficiency, maximum torque transmitted, and the life of the endless carrier 4, the endless carrier 4 is inserted into the contact surface 7 of the carrier insertion grooves 6, 6 of each presser piece 5. 7 must be hit evenly.

That is, the carrier insertion grooves 6, 6 of each presser piece 5 are
The distances A between the tapered surfaces on both sides of each presser piece 5 are made to be the same when using the carrier contact surfaces 7, 7 as a reference, and the contact surface 8 of each presser piece 5 with respect to the V-shaped pulleys 1, 2 is made to be the same. , 8 reliably contact the inclined surfaces 9, 9 of the V-shaped pulleys 1, 2.
It is necessary to make the inclination angle θ ₁ of the inclined surface 9 of No. 2 coincide with the inclination angle θ ₂ of the contact surface 8 of the presser piece 5.

Conventionally, the method of processing both contact surfaces 8 of the presser foot 5 has been to use the surfaces obtained by precision punching or sintering of rough materials as they are, and to obtain the required dimensions with mold precision. The presser pieces 5, 5, etc. obtained by the guaranteeing method, ordinary punching, sintering, and machining are put together to form the adjacent surface 10 of each presser piece 5 and the carrier contact surface 7. , 7 is used as a reference for polishing both of the contact surfaces 8.

<Problems with the prior art> However, in the case of the former method, even if
Even if the mold accuracy is improved, the distance A between the tapered surfaces of each presser piece 5 and the angle of inclination θ ₂ will no longer satisfy the required values as the number of products manufactured increases due to wear of the mold, incorporation of dust, etc. Further, there was a drawback that a tapered surface was formed when the mold was removed, and the perpendicularity between the contact surfaces 8, 8 of each presser piece 5 and the adjacent surface 10 was reduced.

In addition, in the latter method, with an accuracy of several μ,
The carrier contact surfaces 7, 7 of each presser piece 5 and the adjacent surface 10 are securely clamped, and the distance between the tapered surfaces A,
Another disadvantage is that it is extremely difficult to process the contact surface 8 so as to satisfy the inclination angle θ ₂ , and as a result, it is a tedious task to select and assemble only the presser pieces 5 that satisfy the required dimension values. There was a problem that required me to do this.

In addition, there was also the disadvantage that the time and cost required for processing increased, leading to an increase in costs.

<Objective of the Invention> The object of the present invention is to solve the problems of the method for manufacturing an endless carrier presser foot piece for a metal belt based on the above-mentioned prior art, and to solve the problems of the method for manufacturing an endless carrier presser foot piece for a metal belt based on the above-mentioned prior art. In addition to making sure that the distances between the two pieces are the same, the contact surfaces of each presser foot and the inclined surface of the V-shaped pulley are reliably matched.
Easily manufactured and V in various industries
It is an object of the present invention to provide an excellent method for manufacturing an endless carrier presser piece for a metal belt, which is useful in the field of application of molded pulleys.

<Structure of the Invention> In accordance with the above-mentioned object, the structure of the present invention, which is summarized in the claims, has the following features in order to solve the above-mentioned problems:
After manufacturing the presser foot by processing the raw material, the presser foot is
The abutment surface for the V-shaped pulley is roughened, and then a predetermined number of roughened presser pieces are mounted on the endless carrier through the carrier insertion grooves of the presser pieces. The metal belt on which the When the V-shaped pulley is rotated, the metal belt consisting of the endless carrier and the presser piece goes around between the pair of V-type pulleys, and in this process, the contact surface of each presser piece is connected to the V-shaped pulley. The inclined surface receives a force due to the tension of the metal belt in the direction of the center of rotation of the V-shaped pulley, and the distance between the tapered surfaces of the opposing roughened contact surfaces of each presser piece is , is made uniform without variation, and furthermore, technical measures have been taken to ensure that the corresponding contact surface is sized (dimensionally corrected) by sliding against the inclined surface of the V-shaped pulley that is in sliding contact.

<Example> Next, an example of the present invention will be described below with reference to FIGS. 5 to 12. In addition, the first to
The same parts as those in the embodiment shown in FIG. 4 will be described with the same reference numerals.

First, as in the conventional embodiment, a rough material is provided by precision punching or sintering, and then a predetermined number of presser pieces 5, 5, . . . are manufactured by machining each part. The abutting surfaces 8 of each presser piece 5 against the V-shaped pulleys 1 and 2 are subjected to shot peening as a roughening process, and the abutting surfaces 8' and 8 are roughened as shown in FIG. ' Manufacture a presser foot 5' having
The presser pieces 5', 5', . . . are attached to the V-shaped pulleys 1', 2' before being assembled into the own vehicle, as shown in FIGS. 6 and 7, via the endless carriers 4, 4.

Then, the V-shaped pulleys 1' and 2' are pulled apart from each other in the direction of the arrow in the figure, and in this state, the V-shaped pulley 1' is rotated via a drive device (not shown).

Therefore, as shown in FIG. 7, the V-shaped pulleys 1',
The presser foot pieces 5'a, 5'b, etc. that are inserted in 2' are
Due to the above-mentioned tensile force, the pulleys 1', 2' roll relatively while biting into the respective inclined surfaces 9', 9', and the contact surfaces 8', 8' of each presser piece 5' and the above The inclined surfaces 9', 9' of the pulleys 1', 2' are slid together toward the center of the V-shaped pulleys 1', 2'.

By the way, in the above process, as shown in FIGS. 8, 9, and 10, for example, when the distance A between the tapered surfaces of the presser pieces 5'a and 5'd is longer than that of the presser pieces 5'b and 5'c. , the tensile force is applied to the carrier contact surfaces 7'a, 7'd at positions away from the centers of the V-shaped pulleys 1', 2'.
As shown in FIG.
does not come into contact with the inclined surfaces 9', 9' of the V-shaped pulleys 1', 2'.

At the same time, stress concentration occurs on the contact surfaces 8'a, 8'd of the presser pieces 5'a, 5'd, and the V-shaped pulleys 1',
As 2' rotates, the corresponding contact surfaces 8'a, 8'd
As shown in FIG. 11, the initial state in which shot peening has been applied is changed to a state in which the convex portions are crushed by rubbing together as shown in FIG. 12, and as a result, the presser foot 5'b , 5'c contact surface 8'
The load will now be shared with b and 8'c,
The distance A between each tapered surface of the presser foot pieces 5'a, 5'b, 5'c, 5'd... is made uniform, and each contact surface 8'a, 8'b, 8'c, 8''d... are rubbed together with the respective inclined surfaces 9', 9' of the V-shaped pulleys 1', 2', sized (corrected in size), and made into smooth surfaces.

Thereafter, the V-type pulleys 1', 2', the metal belt 3' consisting of the presser pieces 5'a, 5'b, . . . and the endless carriers 4, 4 are assembled into a vehicle or the like as a continuously variable transmission.

<Other Examples> It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, roughening of the presser foot piece is not limited to shot peening, but may also be performed by electrical discharge machining or electrolytic machining. It may be processed by machining or etching, and even if the V-shaped pulley is not assembled into an actual vehicle, a dummy V-shaped pulley that is hard and has little wear may be used, and various other methods can be adopted.

<Effects of the Invention> According to the invention as described above, the inclination angle of the abutting surfaces of the plurality of presser pieces attached to the V-shaped pulley via the endless carrier and the distance between the tapered surfaces with respect to the V-shaped pulley can be adjusted. The excellent effect of uniformly reliably and in a short period of time is achieved.

In addition, by including a process of roughening the contact surface of the presser foot to the V-shaped pulley, the convex portion formed on the rough surface can be easily crushed, resulting in dimensional errors in the contact surface of each presser foot. It has an excellent effect of easily absorbing the sizing of the V-shaped pulley and performing sizing (dimensional correction) on the V-shaped pulley in a short time.

Therefore, even if the accuracy of the punching die deteriorates due to wear or dust gets mixed in, the sizing can be made accurately by simply rubbing the protrusions on the roughened contact surface. An excellent effect can be obtained in that the distance between the tapered surfaces, the inclination angle, and the perpendicularity between the adjacent surface of each presser piece and the abutting surface can be simultaneously processed in a short time.

Furthermore, a presser piece with a roughened surface is attached to the V-shaped pulley via an endless carrier, and force is applied in a direction to separate the pulleys from each other. After applying a tensile force to the metal belt, the V-shaped pulley is rotated. By having a sizing process in which the V-shaped pulley and the presser piece are rubbed together and the rough surfaces of the presser piece are rubbed together (sizing), the machining work is not only extremely simple, but also allows the presser piece to be used easily. When the device is installed on a V-shaped pulley, an assembly process is included, and an excellent effect is achieved in that the efficiency of the assembly work is improved.

In addition, since it no longer depends on the precision of the punching die, the number of die changes is reduced, and there is no need for positioning, unlike when machining the presser foot independently.
There is also the advantage that product costs can be substantially reduced.

[Brief explanation of drawings]

Figure 1 is a front view of the metal belt attached to the V-shaped pulley, Figure 2 is a partial sectional view of Figure 1, Figure 3 is a front view of the presser foot, and Figure 4 is a side view of Figure 3. 5 and 5 show examples of the present invention. FIG. 5 is a perspective view of a presser foot directly used in this invention, and FIG. 6 is a view showing a metal belt attached to a V-shaped pulley. FIG. 7 is a longitudinal sectional view of FIG. 6, FIG. 8 is a partial side view, FIG. 9 is a side view of FIG. 8, and FIG. 10 is a cross-sectional view of FIG. 9. The top view, Figure 11, is a partially enlarged view of Figure 5, and Figure 12.
The figure is an explanatory diagram corresponding to FIG. 11. 1', 2'... V-type pulley, 3'... Metal belt,
4... Endless carrier, 5', 5'... Presser piece, 8',
8'...Abutment surface.

Claims (1)

[Scope of Claims] 1. A method for manufacturing an endless carrier presser foot piece for a metal belt, which includes a process of manufacturing rough material processing of presser foot pieces that are inserted into and connected to an endless carrier of a metal belt that is wound around a V-shaped pulley and are adjacent to each other. After roughening the abutting surface of the presser foot piece made of rough material against the V-shaped pulley, the presser foot piece is attached to the V-type pulley via an endless carrier, tension is applied to the metal belt, and then A method for manufacturing an endless carrier presser piece for a metal belt, characterized in that the rough surface is finished into a smooth surface by driving the V-shaped pulley and rubbing the presser piece and the V-type pulley together. 2. The method for manufacturing an endless carrier presser foot piece for a metal belt according to claim 1, wherein the roughness of the surface roughening applied to the contact surface of the presser foot piece against the V-shaped pulley is 10μ to 100μ.