SU932459A1 - Time-piece part manufacturing method - Google Patents

Description

(54) METHOD FOR MANUFACTURING HOUR PARTS

I

The invention relates to the technology of making watch parts in a belt and can be used in the instrument-making industry in enterprises using sequential multi-operation stamping in a belt or a combination of stamping with metal-cutting processing.

A known method of manufacturing parts of devices in a tape, which consists in first punching the basic holes in the tape, then fixing the penta on the basic holes and drilling the required holes in the parts, which are subjected to subsequent processing, including die calibration, after which the detail is cut down along the contour and individually screened in a stamp along the outer perimeter of l.

A method of making watch parts that is closer in its technical essence in the belt, which also cut the part around the contour, press it back into the tape and perform subsequent processing, for example, by means of a metal cutting tool, after which the parts are removed from the C2 tape .

A disadvantage of the known methods is the impossibility of stripping the outer contour of the part pressed into the tape, since after removing the allowance for stripping from the part of the body, it is not possible to press it back into the tape for transportation to the subsequent processing.

The purpose of the invention is to improve the quality of parts by eliminating their deformation along the plane and improving the cleanliness of the contour surface.

Claims (1)

To achieve this goal, the part is cleaned on the outer contour after it is pressed out of the tape, and in the latter, at least three protrusions are formed by coreing, on which the part is based after the stripping. FIG. 1 shows a stamp for cleaning the part when the tape is fixed in FIG. 2-4 step by step shows the process of cleaning: its beginning, ending and subsequent fixation of the stripped part B tape; FIG. 5 shows the cutting of the tape at the position preceded by the cleaning and after stripping the fixing of the part on the protrusions protruded. The method of making watch parts 1 is carried out as follows. In the tape 1, the basic holes 2 are pre-punched, then, fixing the tape on the base holes, the part 3 is cut down along the contour with allowance for stripping and pressed into the tape 1. The part pressed into the tape is fed to the subsequent, for example, mechanical treatment by means of cutting tools (drilling holes in parts, their boring, the formation of chamfers, etc.). Then the tape enters the stripping position in the stamp (Fig. 1). The stripping stamp contains a matrix 4 located in the upper movable part with base catchers 5 installed inside the matrix with a spring-loaded ejector 6 and a pressure ring 7 fixed from the side of the matrix matrix 4. The height of the pressing ring is several times the thickness of the tape to be processed and is approximately 2 / 3 its thickness li. In the pressure ring 7, there is an opening 8 corresponding to the contour of the part 3 to be machined and considerably larger than it. In the lower stationary part of the conveyor are a wiper punch 9 mounted on the punch spring-loaded puller 10 and installed around the punch 9 in close proximity to its contour, at least three additional punch 11 for squeezing 3 locking lugs 12 along the contour of the part. The ejector 6 protrudes from the hole of the stripping matrix 4, and its working surface is flush with the bottom surface of the pressure ring 7. The stock 13 cut off during part cleaning is placed in the hole 8 of the pressing ring. Ring 7. Stripping the part using the described stamp is performed as follows: Tape 1 with the parts 3 pressed into it enters the position, stripping. When the stamp is downward, the tape is fixed on the base hole 2 by catchers 5 and the clamping ring 7 is pressed against the spring-loaded puller 10. With the stamp gradually closed, part 3 is pressed out of tape 1 by the punch 9 and pushed out into the stripping matrix 4, due to the fact that the thickness the clamping ring 7 is smaller than the thickness of the part, the latter, after passing through the space 8, is bitten by the die and remains partially pressed in the belt (Fig. 2). With further downward movement of the upper part of the stamp, the part 3 is completely pushed into the mold 4 by the punch 9, a complete sweep of the part along its outer contour takes place. In the process of stripping the part, under the action of the upper part of the stamp extending downward, the tape 1 is lowered and pressed down on the punches 11, by means of which the protrusions 12 are squeezed inside the contour of the part in the tape (Fig. 3). When the die is opened, the part 3 is pushed out of the matrices 4 by the ejector 6 and pressed into the belt 1, fixed on the protrusions 12. After the die is opened, the allowance removed from the part is removed. The stripping is removed from the stamping area, for example, with a jet of compressed air, and the tape is removed. The parts cleaned in it, are cleaned for further processing or for the position of removal of completely processed and cleaned Hbix parts. The proposed method makes it possible to fully automate the process of producing watch parts in the belt with an improvement in their quality and accuracy. The formula for obtaining a method of manufacturing watch parts, which consists in cutting the part around the contour, pressing it back into the tape and processing it further, about T and Ttvf, which, in order to improve the quality of the parts by eliminating deflation on the plane and improving the cleanliness of the contour surface, the part is cleaned on the outer contour, and in the tape they form by at least three protrusions, on which it is based on the part after stripping. Sources of information taken into account during the examination 1. Dorin V. I. Precise stamping of optical-mechanical parts. M., Oborongiz. 1958, p. 172-174. 2, USSR Author's Certificate N9 329503, cl. Q04 19/10, 1970 (prototype).