SU990426A2 - Apparatus for calibrating holes - Google Patents

Description

(54) DEVICE FOR CALIBRATION OF HOLES

one

The invention relates to mechanical engineering and can be used to obtain cool holes in a nodal and aggregate assembly, preferably with one-way access to the hole being machined.

According to the main author. St. No. 428909, a device for treating holes with a tool mounted on a rod of an induction-dynamic drive enclosed in a housing is known to ensure high-speed movement of the rod with the tool during forward and reverse strokes.

When machining the holes with such a device, the machining tool, the mandrel, is inserted with its guide part into the machined hole of the package of parts and abuts against the upper edge of the hole. When a current pulse is applied from a pulse generator to an induction-dynamic drive, a mandrel is pushed through the opening. During the return stroke, the device rises until the tool touches the lower edge of the holes, when a current pulse is applied, the mandrel is pulled out of the hole, the return stroke 1 is performed.

The disadvantage of this device is that during the direct or (reverse of the tool) the impact of the striker and the inductor is possible, which leads to the failure of the latter. Moreover, it is not excluded

5 opportunity in the off position to bring the disk and the inductor closer and if the current pulse is inadvertently applied, an idle shot will occur, which may result in the failure of the tool or tearing off the moving

10 parts.

The aim of the invention is to increase safety, reliability and resource.

This goal is achieved by the fact that the device is equipped with stops and is placed on the rod by a lancer that is spring-loaded in both directions relative to the device’s body and is made in the form of a cylinder, and its weight is not less than the mass of moving parts of the rod with the tool, and the stops are placed

2Q on the stem and body and are designed to interact with the balance bar.

The drawing shows a device for processing holes, a longitudinal section.

Claims (2)

The device for processing holes includes a housing 1 with a handle 2. In case 1, a rod 3 is mounted with an electrically conductive disk 4 placed between two coaxially arranged inductors 5 and 6. Coaxially. The rod 3 is equipped with a massive balance bar 7, spring-loaded relative to the body 1 by springs 8 and 9. On the case and the rod there are adjustable stops 10 and 11, respectively. The tool 12 is fastened on the rod 3. The device works in the following way. In the initial position, the electrically conductive disk 4 is located between the inductors 5 and 6, at some distance from them. Approaching the inductors 5 and .6 of the disk 4 prepares through the hanger on the rod 3 and the adjustable guide 11 balance bar 7, thereby making a safe current discharge on any of the inductors 5 and -6, since the force of the interaction between the inductor and the conductive disk back proportional to the distance between them, and a gap of the order of 5 mm negates the mechanical interaction of the inductor and the conductive disk. In order to carry out the forward stroke, tool 12 is abutted against the edge of the hole being machined, rod 3 with disk 4 is shifted to the left, with its arms on the balance bar 7, shifting it to the left until it touches the stop 10 of the housing 1, compressing the spring 8. The disk 4 approaches the inductor 5 to the minimum allowed by the insulation conditions of the busbar inductor distance. A current pulse is generated from the pulse generator, which occurs when a current pulse passes through an inductor, the interaction force between inductor 5 and an electrically conductive disk 4 drives disk 4 with rod 3 to the right, pushing tool 12 through the hole. The balancer is then returned to its original position by the action of the compressed spring 8. The rod 3 with the disk 4 and the tool 12 after passing through the hole has residual kinetic energy and continues to move. At this time, the adjustable stop 11 on the rod 3 catches up with the balancer 7, interacting with it, while the stem 3 with the tool 12 and the disk 4 stops, and the balancer 7, compressing the spring 9, gives off the received energy. As a result, the impact of the disk 4 on the inductor 6 is eliminated. To perform the reverse stroke, the rod 3 with the disk 4 is shifted to the right. In this case, the rod 3 by the anvil 11 acts on the balancer 7, shifts it to the right up to the stop into the protrusion of the housing 1. At the same time, the spring 9 is compressed, and the electrically conductive disk 4 approaches the inductor 6 to the minimum permissible position. A current pulse is applied, inductor b interacts with the disk 4, the rod moves to the left, tool 12 is pulled out of the package of parts. The rod 4, with its shoulders, catches up with the balancer 7, interacts with it, giving away residual energy, and stops. The balancer 7 at the same time moves to the left, compressing the spring 8. The use of a massive balancer spring-loaded relative to the body allows the device to be reliable in operation and has a sufficiently high working life, since it allows the conductive disk and the inductor to be brought together to the minimum distance between them. which decisively affects the completeness of the conversion of electrical energy into mechanical energy, while preserving the inductor from destruction. Safety is also improved when working with the device as a result of the balance weight smoothly damping the recoil and residual energy, as well as reliably preventing the shot from idle, mainly "in front of which not only the destruction of the structure at the moment of impact of the disk and the inductor is possible, but also Moving high-speed moving parts, which can cause serious injury to workers. The invention of the device for calibrating the holes on the author. St. No. 428909, characterized in that, in order to increase safety, reliability and resource, the device is provided with stops and a balance bar placed on the rod, which is spring-loaded in both directions relative to the device body and made in the form of a cylinder, and its mass is not less than the mass moving parts of the rod with tools, and stops are placed on the rod and body and are designed to interact with the balance bar. Sources of information taken into account in the examination I. USSR author's certificate № 428909, cl. 23 Q 5/00, 1972. 4i Cvj