SU1761459A1 - Punching tool - Google Patents

Abstract

The invention relates to a hand punch tool for punching holes. The aim of the invention is to increase productivity by concentrating the crushing forces. Hit with a hammer on the free end of the handle body and the impact force is transmitted to the cutting edges, which cleave the particles of the crushed monolith. The blows alternate with periodic turns of the instrument around its longitudinal axis. In this case, the core is cleaved and crushed, and with other particles, the crushing of the monolith is removed through the longitudinal grooves 4 sludge.

Description

WITH

WITH

The invention relates to hand-held percussion tools for punching through and blind holes (holes) in stone, concrete parts of buildings and structures, as well as in monoliths of rocks and their parts.

A drill is known with a through hole passing through the core of the head, rod and drill shank.

The closest in technical essence to the claimed is a tool for punching holes comprising a cylindrical handle body with a working part at one end having cutting edges on the end.

The disadvantage of the known tool is that the core and particles of the crushed monolith (stone and cold parts of buildings) plug its cavity and are removed from the working state in general or

require a significant amount of time to clean the tool cavity

The aim of the invention is to increase tool productivity by concentrating the crushing forces.

This goal is achieved by the fact that in a tool for punching holes containing a cylindrical handle body with a working part at one end having cutting edges at the end, the cutting edges are described by opposite arcs, the working part is cut by a notch having an L-shaped profile in longitudinal section, the edge of which facing the body-handle, and it has longitudinal grooves, each mated with the end of the ribs

Fig. 1 shows a tool for punching holes in a general view of Fig. 2XI.

ABOUT

Ј ate yu

view A in figure 1; on fig.Z - view B in figure 1; figure 4 - section bb In figure 1.

The tool hole punching tool includes a cylindrical body-handle 1 with working part 2 at one end. The working part 2 at the end 3 has cutting edges 4, described by opposing arcs. The working part 2 is cut by a recess 5, having a - shaped profile in longitudinal section.

The edge 6 of the recess 5 faces the body-handle 1. The working part 2 has longitudinal grooves 7, which are mated with the end of each edge 6.

Punch holes in the monolith as follows.

A blow with a hammer or a brisk pneumatic vibrator (not shown) at the free end of the body-handle 1 and the force of the blow is transmitted to the cutting edges 4, which cleave the particles of the crushed material.

Editor N.Sokolova

Compiled by E.Ivanushkina

Tehred M.MorgentalKorrektor S.Pekar

nolita. The strike alternates with periodic turns of the instrument around its longitudinal axis. The core is cleaved, crushed, and with other particles, the crushing of the monolith is removed through the longitudinal grooves 7.

Claims (1)

Claim tool for punching holes containing a cylindrical housing with a working part at one end having cutting edges on the end, characterized in that, in order to increase productivity, the cutting edges are described by opposite arcs, the working part is cut by a recess having an L-shaped profile in longitudinal section, edge which is facing the body-handle, and on it are made longitudinal grooves, mating each with a fin edge. Vida VidB Fig.Z Bb 4 FIG. Z