SU1161264A1 - Chuck for cutting thread - Google Patents

Abstract

CARTRIDGE FOR CUTTING THROUGH the ed. St. No. 1073009, characterized in that, in order to increase accuracy, it is equipped with additional spring-loaded elements radially mounted with the possibility of interacting with the tool holder in the holes of the ring, fixedly attached to the body of the cartridge inserted into the device, wherein these elements are designed as stepped ring pins.

Description

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05 4 The invention relates to metal working, mainly to devices for cutting large threads. The purpose of the invention is to increase accuracy. This goal is achieved by the fact that the cartridge is provided with additional spring-loaded elements radially mounted with the ability to interact with the tool holder in the holes of the ring fixed to the body of the cartridge inserted into the device, while these elements are made in the form of stepped pins with ring risks. FIG. Figure 1 shows schematically a thread-cutting chuck, a further cut; in fig. 2 is a section A-A in FIG. 1. A chuck for threading soot from the body 1, the tool holder 2 located in the lower part of the body 1, and the tapered mandrel 3 located in the rear part of the body 1. The body 1 has through radial grooves 4 at the end of the lower part, two longitudinal through grooves 5 with angled bevels 6, complete on the tail section, and a threaded section 7, on the outer surface of the tail section. In the radial grooves 4 of the housing 1 there are protrusions 8 of the holder 2 of the tool mounted on ball bearings 9 and 10 and in contact with the flange 11 with spring-loaded centering elements 12 mounted radially in the housing 1. In the longitudinal grooves 5 are placed the unloading rollers 13 fixed on the leash axles 14, located in the through groove 15 of the tapered mandrel 3 and having the ability to move along the rod 16 when interacting with the locking nut 17. To see the impact of the cutting edges of the tool, a spring 18 is mounted on the rod 16. The housing 1 is kept in the initial position by means of the stoppers 19. A mounting ring 20 with holes for pins 21 spring-loaded relative to the housing, which are in contact with the projections 8 of the tool holder 2 and having ring risks at their ends, is rigidly fixed to the cartridge case. In this case, one of them with the combined axes of the body 1 of the chuck and the tool holder 2 corresponds to the maximum, and the other to the allowable displacement of the tool relative to the spindle axis. The thread-cutting tool is installed in the hole in the following way. A cartridge with a thread-cutting tool is guided to the hole being cut and the intake portion of the tap is inserted into the hole being cut. In the event that the tool does not enter the cut hole, the pins 21 move respectively in the holes of the setting ring 20. By extending the annular trickles on the ends of the pins relative to the beginning of the holes of the setting ring 20, the direction of the required tool displacement is determined, opposite to the direction of movement of the pins 21, and the tool holder 2 is centered, shifting it until the end scratches coincide with the beginning of the holes of the adjusting ring 20. The use of the proposed device allows ovysit processing quality, while reducing the loss of time alignment.

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Claims (1)

CARTRIDGE FOR CUTTING THREADS by ed. St. No. 1073009, characterized in that, in order to increase accuracy, it is equipped with additional spring-loaded elements radially mounted with the possibility of interaction with the tool holder in the holes of the ring inserted into the device, rigidly mounted on the cartridge case, while these elements are made in the form of stepped pins with ring risks.