SU812560A1 - Hand-operated impact-action machine - Google Patents

Description

one

The invention relates to mechanical engineering, in particular, to the design of hand-held percussion machines and can be used in construction, mining, as well as in riveting hammers during assembly operations.

A percussion machine is known, comprising a housing with a cylinder and a driving motor, a crank mechanism converting the rotational movement of the engine into reciprocating movement of a drive portion in a cylinder, a gearbox, a hammer in and a working tool in the housing 111.

The disadvantage of this machine is the presence of a reducer, which is necessary to increase the impact energy by reducing the frequency of the strokes of the drive piston, which leads to a complication of the structure and an increase in its weight.

Closest to the predzhodiyoy to the technical essence and reach-. The result is a manual impact machine containing a cylindrical body, a motor with a spindle in it, a mass installed inside the body with the possibility of axial movement relative to the spindle and - joint with it, rotation, a mechanism of rotation, rotational movement of the spindle

in the reciprocating movement of mass, made in the form of a closed curved groove on the inner surface of the housing and the ball and works

a tool that interacts with a mass of 121.

The disadvantage of such a machine is a large weight with a nice impact energy, as well as the impossibility of automatic transition to idle

move

The purpose of the invention is to increase the impact energy, reduce weight and ensure automatic transition to idle.

This goal is achieved by the fact that on the outer surface of the mass there is an annular groove with which the ball interacts, and in the wall of the body there is an axial

a groove connected to a closed curved groove at its lower limit point from the side of the working tool.

The drawing shows the scheme

Claims (2)

manual percussion machine. The machine contains a cylindrical body 1, a motor 2 b placed therein by a spindle 3, on which a moving mass 4 is mounted with a possibility of axial displacement 1 but fixed to rotation, and guided in a cylinder 5 made in body 1. On the outer surface of the moving mass 4, a colossal groove 6 is provided inside which the ball 7 is placed. The same ball 7 enters a closed curvilinear groove 8 cut on the inner surface of the cylinder 5. In the lower part of the cylinder 5 an axial groove 9 is made, extending downward from the lower predecessor th point of the groove 8 with Storo us the tool 10, which is included in the shank adapter weight 11, and the latter is fixed between the shock absorber 12 and located in front of the cylindrical housing 1. Manual percussive action machine operates as follows. When the engine 2 is turned on, the spindle 3 rotates, the mass 4 rotates with it. When the working tool 10 stops in the machining unit, the ball 7 finds objects with the curvilinear groove 8 within the limits of the crankshaft 8, as a result of which reciprocating movement of mass 4 inside cylinder 5 and its shock interaction with transition mass 11 and tool 10 fixed in it, which occurs in two stages. At the first stage, when ball 7 moves from the lower limit point to the upper limit point of the closed curvilinear groove 8, due to the slip and planetary run-in of the ball 7 along the ring groove 6 and the closed curvilinear groove 8, the speed of mass transfer 4 decreases. ball 7. from the upper limit point to the lower limit point, a gradual increase in the velocity of the mass 4 occurs. As a result of the reciprocating movement of the mass 4, the cycle time and impact energies increase and decrease are frequency beats. When the machine is lifted, the working tool 10 is detached from the object being machined, and Mssina automatically goes to idle due to the fact that the tool 10 with a transition mass 11 goes down and opens access to the axial groove 9 for the ball 7, which falls into this groove , provides a simple rotation of the mass 4. without. the possibility of its rise in the upper working position. To resume the shock mode, the ball enters a closed curved groove when the machine is lowered. This percussion machine can significantly reduce the weight of structures, increase the impact energy. In addition, the service life of the machine is increased by a simple and reliable mechanism for automatically switching to idle. The invention The manual percussion machine containing a cylindrical body, a spindle engine housed therein, a mass installed inside the body with the possibility of axial movement relative to the spindle and joint rotation with it, a mechanism for converting the rotational movement of the spindle into reciprocating mass, made in the form of a closed curved grooves on the inner surface of the housing and the ball, and a working tool that interacts with the mass, so that, with the aim of Reducing the impact energy and ensuring automatic transition to idling, an annular cannon is made on the outer surface of the mass, with which the ball interacts, and an axial groove in the body wall is connected to the closed curvilinear groove at its lower limit point from the working tool. . Sources of information taken into account in the examination 1. German Patent 4916141, cl. 87 V 8/04, 1928. 2. Accepted for Japan I 46-25482, cl. 9B (prototype).