TW531610B - Laminate cam - Google Patents

Abstract

In a laminate cam which is assembled by laminating a plurality of plate cam members made of metal, the occurrence of a positional deviation of the plate cam members upon assembly is prevented lest assembly precision of the laminate cam to a cam shaft deteriorates. Plate cam members 14 which are laminated are formed so that an outline having an extending portion 16 which extends outwardly in one direction from a shaft through-hole 15 is formed in the same arc-cam-shape. A convex portion 16a is formed onto one of plate surfaces of the extending portion 16 and a concave portion 16b is formed onto the other plate surface at a position corresponding to the back side of the convex portion. According to a laminate cam 10 (11), the plate cam members 14 are laminated by fitting the concave portions 16b and the convex portions 16a and cam surfaces m as outer peripheries and hole surfaces n as inner peripheries are matched without a deviation, thereby integratedly assembling the plate cam members 14 so as to obtain a unified cam.

Description

531610 V. Description of the invention (1) Background of the invention 1. Field of the invention The present invention relates to a cam used for closing / closing control of an exhaust valve and an intake valve of an internal combustion engine or the like, and also relates to a cam having a function of A plurality of flat cam elements of the same shape and made of metal are aligned and formed on one shaft perforation of each flat cam element, and a camshaft is formed by laminating and combining a camshaft by pressure into the shaft perforations. 2. Relevant technical description So far, a cam system made of metal and used in, for example, a motorcycle internal combustion engine is usually constructed in such a way that, for example, the cam is relatively thick and the cam system is manufactured by machining. In a cam made of metal and manufactured through synthetic processing (such as shown in FIG. 5), a laminated cam A obtained by laminating a plurality of thin flat cam elements a, ... and combining them as a whole is Use of the Department is familiar. In the case of combining this type of laminated cams, the individually punched flat cam elements a are stacked and positioned via shaft perforations aligned with each cam and then supported into a composite cam. A camshaft B is passed through by a pressure and is inserted into a common shaft perforation 1 of the composite cam. However, until now, when the flat cam member a is laminated and integrated into a laminated cam A as a whole, a positional deviation of the shaft perforation 1 serving as the inner periphery and the cam surface 2 serving as the outer periphery may occur. If the camshaft B is jammed under pressure in a state where the shaft is perforated or the cam surface is not aligned, the combined precision of the laminated cam A to the camshaft B will be poor. Therefore, when the cams are operated, the

C: \ 2D-CODE \ 91-02 \ 90129183.ptd Page 6 531610 V. Description of the invention (2) or similar driven du & i $ difference. It is difficult to improve the durability of the cam because the contact state becomes uneven and the contact position is deviated. Stop these flat plates: solve the traditional problem mentioned above and prevent deviations, || this: change 15: soil lamination cam-position selection. This improves the precision of the combination of the laminated cam to a camshaft. Summary of the Invention 4 士 H ^ ^ 4The above item # will be explained in the text according to the example given in item 1 of the scope of patent application and shown in the figure. : One, perforation of one axis of the plate cam element 15 and one cam two = pressure base into the perforation of the search axis 丨 5 layered combination, characterized in that each side 4 ί: Γ a protruding part ... in the flat plate " The position of the back side is provided-the concave portion 16b is in the shape of ^ outpoint 16 | and the plate cam elements 14 are each formed into a 16b and a distant convex portion 16a overlapping each other to form a ^ knife cam element. This layer is combined Closing cam 10: The flat cam element 1 4 of which is equal to the flat, is restricted and positioned: ::: due to the fit of the mutual weight and abundance of the part-the position of ^ is concave and convex from the flat cam element The cooperation of the outer peripheral cam surface m and the hole surface n that is the inner periphery of the Tiancha 'temple does not have a ring wheel respectively.

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531610 V. Description of the invention (4) Fig. 3 shows a cam assembly having a laminated cam according to the present invention. The cam assembly C is a rotary device, which is used in, for example, a two-layer cam of a motorcycle! It is constructed by combining with η, in which each laminated Y wheel has an arc cam shape above the camshaft 12 and at the same time switches the phase by a preset angle ^, and similarly combines a gear on it丨 3. ° At the same time, as shown in Fig. 1 and Fig. 2, each layer of the laminated cam 10 * u = bag; is formed by stacking and combining two flat cam elements 14: 14 has the same shape and is made of metal;: a; 柘 Ϊ: a shaft perforation 15 through which the camshaft 12 passes is formed in one of four pieces 14. Each of the flat cam elements 14 is two so that one has a hole cam 15 extending outward from the shaft in one direction, and the other: :: 16 has an identical cam shape. Special 疋 σ 卩 points 1 6 a are formed in the extension 1 6

St 2: The recessed part is formed on the surface of the flat surface of the other-^ on the back surface of the 5 bulge. θ In the case of Ξ ί:: Ϊ cam 14 ′ Although not shown, a punching method such as Seong-hyun ’is used. A stamping cry and a flat plate stamping element around ρ Yun__ 起 Λ 下 # ^: It is made of a thick flat plate material that is with the person and should be processed. And, ±± & The surrounding backward punching element is connected to the 'W / soap', so that the shaft perforation 15 is formed in the material, and its shape is cut into an arc cam shape. And during the shearing process, when the material to be processed is pressed by the pressing element, the cylindrical protruding portion 6a

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531610 V. Description of the invention (6) Rotation of the axle 12, each cam of the laminated cams 10 and 11 is rotated, thereby performing on / off control of the exhaust valve and the intake valve. Although the concave portion 16 b and the convex portion 16 provided above the extending portion 16 of the cymbal cam elements 14 are cylindrical, they can have other shapes such as diamond or the like at the same time. shape. As shown in FIG. 1 (a2), it is required that the concave and convex portions 16b and 16a are installed at an edge connecting the shaft perforation 15 and the edge of the extending portion 16 at the farthest position from the center. Above the center line s of position 6c, that is, the concave and convex portions 16b and 16a are formed at the edge position 6c and the shaft perforation 15 (closest to the edge position 16c while maintaining balance) Between the hole edge positions 15a. ^ The concave and convex portions 16b and 16a are formed in the h-ji temple of the extension, for example, Fig. 4: 47 Pir λα, it is better to install them with the center line S as the reference line "Angle sound" Wen Yi Ran Yizhong ~ Although not shown, but the angle is too high / 0, in between. The structure is such that the positions of the provided 16b and 16a in the flat manner are different from the recesses and protrusions on the p-element 14, and A is used to make it different cams of the layer / cam When the combination of shape and wheel is processed, the difference is distinguished. Because of &, the laminated protrusions are distinguished by the eyes: the difference in the cam shape of the layers can be easily achieved. Although the laminated cams 10? The occurrence of cooperation can be prevented. The laminated structure of the wheel element 1 and the female cam 1 will push the two flat plates. The laminated cam can be made from 3 at the same time. The plurality of flat cam elements 14 are laminated by removing the a.

C: \ 2D-CODE \ 91-02 \ 90129183.ptd Page 11 531610 V. Description of the invention (7) Α Ti 2: Examples of such laminated cams in an f-torque internal combustion engine have been & ancient :: ^ 被 明明 'But the laminated cam according to the present invention is widely used at the same time in other internal combustion engines

The invention of the effect of fools? The following effects can be obtained by the present invention.同 开: 状 # I eight: The invention disclosed in the first item of the scope, f Hai has a plurality of flat cam elements made of ^ ^ force, each of which is provided on a flat surface at the same time concave The input part is formed and laminated at two positions opposite to the back side of the protruding part .: t and the sheave element of the protruding part can not deviate "::" Laminated cam. Because A, the Isoconvex makes the laminated convex_to convex &: = below be positioned and combined into one body. Therefore, the accuracy of the combined axis can be improved. The driving part: the top contact shape: i when it works The cam surface and similar valves are exempted. Operation; ί: = Π can be improved in the case of deviation. ,, and the mountain ?? At the same time, the durability of the cam can also be entered:! Πί: = The invention disclosed in 2 items, because in the concave, since the material to be processed is punched by the stamped part in the thickness direction of the recess in the thickness direction of the plate, i: the thickness direction of the edge position of the part Middle;:, the part of the cam surface and the position near the edge of the extension ...

Page 12 =, most of the blanked surfaces become sheared surfaces. Jin = block. 531610 V. Description of the invention (8) The surface of the hole at the edge position is blocked. Therefore, the shaft has a good displacement of the contact position of the moving member. According to the scope of the patent application, the protrusions are formed at positions where the number of non-uniformities that are effectively blocked can be reduced. According to the scope of the patent application, the protruding portion is formed on the edge of the extended portion and is blocked. Causes reduced die cutting. This punching can describe the occurrence of the cracking surface of the laminated cam camshaft cam assembly center centerline flat cam element cam surface sub-surface hole perforation in two parts with high standing part number. The deterioration of the punching precision can be suppressed. Be prevented. With the present invention disclosed in item 3 which can be eliminated 'and the operation precision can be changed, the thickness unevenness mainly occurs in the direction of the edge position of the extending portion when the thickness unevenness is recessed during punching. As a result, the extended part of the hair as disclosed in item 4 of the cut surface of the k ^ T cut surface is caused to be recessed and imitated w μ at the most balanced position, so that the direction of the position is used. The effective precision of the sentence-cutting sentence system is completed. Further

A B C 0 S a m η pieces

531610 V. Description of the invention (9) 2 Cam surface 10, 1 1 Laminated cam 12 Camshaft 13 Gear 14 Flat cam element 15 Shaft perforation 16 Extension 16a Projection 16b Recess 16c Edge position iilii Page 14C: \ 2D-CODE \ 91-02 \ 90129183.ptd 531610 BRIEF DESCRIPTION OF THE DRAWINGS In FIG. 1, (a 1) is a side sectional view of a laminated cam according to the present invention, and (a2) is a front view. Figure 2 is a perspective view of a flat cam element. Figure 3 is a perspective view of a cam assembly having a laminated cam. Fig. 4 is a front view showing the correction of the forming position of the concave and convex portions of a flat cam member. Fig. 5 is a perspective view showing a conventional laminated cam combined with a camshaft.

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Claims (1)

Sixth, the scope of patent application 1 · A type of lamination of a number of flat cams with one shaft perforated, in which one flat position of each of the flats provides a concave flat cam elements that overlap each other and 2. if applying for a special round One part of the component is drilled through the drill shaft. 3) If the center of the protrusion and the left and right sides of the center line are 4 respectively. • If the center of the protrusion is farthest away, the part of the forming application near the side is located as the Approx. 10 ° The application part is recessed and edged at the installation position. It is made of a compound with the same shape and made of metal. 2 I recognize the warp aligning and forming on the _shaft of each flat cam element by pressure. The perforated layered combination of these shafts is broken: σ :: ^ is a piece of system to provide a protruding 'point on the surface of the flat plate = and a back piece of the opposite side of the protruding part is 1 Ϊ another flat surface The flat cam element is formed by forming the concave portion and the convex portion in a wrong manner. The laminated cam of the first item of interest, wherein the flat plate is convex: it becomes an arc cam shape having an extension portion from the ^, and the recesses and protrusions are on the extension portion . 2 1 Laminated cam of the second item, wherein the concave convex, can be seen in the direction, and _ the winter reference day of the edge position of the extension connected to the extended position of the shaft perforation can be 'The recessed and protruding portions are shaped in bounded positions. ~ The scope of the benefit of the second item, the number of people, people ^ ^ a cam axial direction 9 can be: convex. Wheel 'where' a the four into the-when connected to the wheel, the concave and the edge of the extension part And the distance from the: The protruding part is formed on the center line of ί, that is, the hole edge of the shaft perforation of the shaft is at an intermediate position between the edge position and the most back position. Page 16 C: \ 2D-CODE \ 91-02 \ 90129183.ptd