JPS58141820A - Manufacture of tap body of cock - Google Patents

Abstract

PURPOSE:To manufacture a precise tap body of cock inexpensively by a simple working process, by cutting a round bar material to form a conical part, and a gripping part, and bending the gripping part at a desired angle. CONSTITUTION:A proper round bar material 1 is attached to an automatic machine tool and is cut from its other end by a cutter while rotating it, and is formed in sequence into a conical part 3, a stepped part 4 for holding a press over at the time of assembling, and a gripping part 5. After finishing the cutting, the gripping part 5 of a worked material 2, cut off from the end of gripping part 5, is bent so that it makes at a desired angle of approximately 100- 110 deg. to the center line of the conical part 3, and then a tap body 10 is obtained. The body 10 is incorporated as it is into a main cock body to complete a cock by drilling a hole at the prescribed position and fitting the surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the use of cock specimens (
The present invention relates to a method for manufacturing a plug.

Because the handle of a three-way or three-way cock has an angle of 100 to 110 degrees with respect to the conical part, most of them are cast products, with the exception of some forged products. , the number of manufacturing steps is large, and these steps are heavily automated, which inevitably increases manufacturing costs.

To show an example of sample production using a conventional method, first a casting operation is performed in a mold designed according to the specifications of each product. After cooling, the cast product is taken out of the mold, but in order to increase casting efficiency, it is common to take multiple products from one mold, so the cast product taken out from the mold is Separation work is performed to separate each unit into individual units. Each unit is then subjected to a deburring process to remove protrusions, and then processed into a conical surface. Conical surface machining is completed by rotating the conical surface around its central axis using a special machine and grinding the cast surface.

The specimen manufactured in this way is combined with the cock body, holes are drilled at predetermined positions, and then an abrasive is applied.
By intervening and rotating the outer mating surfaces of the specimen and the cock body, the two are airtightly fitted.
Furthermore, the abrasive is washed away, an air sealant, grease, etc. are applied as a lubricant, and the cock is completed by assembling it into the main body.

The inventor of the present application has succeeded in significantly simplifying the manufacturing process and producing products with excellent precision by substituting the above-mentioned cumbersome processes with cutting and bending processes. Amo The method of manufacturing a cock stopper body according to the present invention is to attach a round bar material of an appropriate length to the chuck of an automatic machine tool, cut it from the other end with a cutting tool, and sequentially cut the conical part 3 and the presser lid during assembly. The cutting process is completed by forming the receiving step portion 42 and the handle portion 5.

Generally, the plug body is made of brass, so cutting resistance is low.
The full-form cutting tool allows for extremely short cutting times. Workpiece 2 cut off from the end of the handle when cutting is completed
By bending, the handle part is aligned with the center line of the conical part,
is bent to form an angle of approximately 9,100 to 110 degrees to form the plug body 10.

The conical part of the stopper manufactured in this way has an almost smooth surface and is coaxially machined, so the conical surface has good precision, so it can be assembled into the cock body as it is, and a hole must be drilled in a predetermined position. The grains that will be subjected to the sushi-matching process are formed. Furthermore, the time required for the fitting process is significantly shorter than in the case of cast products. In the casting manufacturing process, a special machine is used to grind the conical surface, which is the lifeblood of the cock specimen.At this time, centering of the workpiece (determining the center of the workpiece) is necessary. Grinding the rough casting surface was time consuming and was a bottleneck in the process, but the method of the present invention succeeded in completely omitting this step.4 The method of manufacturing the cock specimen of the present invention is It is possible to easily set up a mass production line by combining a currently widely used bar supply device for machine tools with an automatic machine tool, and for example,
When producing 8 pieces of 40,004 m using a 6-axis automatic lathe, it is possible to reduce costs by more than 40% compared to casting products. The manufacturing method of the present invention also allows immediate response to changes in product specifications, which is a major advantage over conventional methods, which require starting from the design of the mold.

[Brief explanation of the drawing]

FIG. 1 is a process diagram showing a conventional manufacturing method of a stopper. FIG. 2 is a process diagram showing the steps of the method of the present application. FIG. 3 is an explanatory diagram showing an example of the method of the present invention. 1 ... Round bar material patent applicant Tsuneo Asaba

Claims (1)

[Claims] A conical part and a handle part are formed by cutting the Nine Zelkova wood with a cutting tool while rotating it around its central axis in the longitudinal direction, and then bending the handle part to form a desired angle with respect to the conical part. A method for producing a cock specimen, characterized by processing it.