SU1420337A1 - Position pickup - Google Patents

Abstract

The invention relates to instrumentation technology, namely to sensors for fixing a predetermined relative position of elements of various devices and structures. The purpose of the invention is to increase the operational reliability of the sensor by eliminating the possibility of its failure when exposed to lateral forces, which is achieved by making the sensor probe compliant in the transverse direction, made up of individual sleeves 3, mounted by a spring 4 between the tailings. com 2 and contact head 5. 1z.p. f-ly, 1 ill.

Description

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The invention relates to instrumentation technology, namely to sensors for fixing a predetermined relative position of elements of various devices and structures.

The purpose of the invention is to increase the operational reliability of the sensor.

The drawing shows the sensor design, section.

The position sensor contains a base 1 with a hole in which the shank 2 of the probe is inserted, made up of sleeves 3, mounted by a spring 4 between the contact head 5 and the shank 2. A return spring 6 is installed between the shank 2 and the base 1, and the shank 2 is equipped with a 7 dl nut limit the stroke of the probe. The end of the shank is connected to the electrical contacts 8. The contact head 5 is provided with a support ball 9 mounted rotatably on the outer side of the contact head, and the center of rotation of the ball lies on the probe axis.

The sensor works as follows.

When the sensor 1 moves in the direction of the surface 10, relative to which its predetermined position is established, the contact head 5 is in contact with the surface 10, accompanied by pressing the shank 2 onto the electrical contacts 8, which are open in their original state. The contacts are closed and the signal is transmitted to the actuator (not shown). When the base 1 of the sensor moves along the surface 10, a predetermined position of the base (and the device on which the sensor is mounted) is maintained relative to the surface 10. When an obstacle appears in the path of movement of the sensor, due to its design, the probe elastically progresses and does not damage it. 45

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After the obstacle has passed, the probe under the action of the internal spring 4 is rectified and the sensor continues to work.

The ball 9, installed in the contact head, reduces friction when moving on a controlled surface.

The position sensor can be used in various automatic and semi-automatic devices, for example, during thermal cutting of metal to record the moment when the plasma cutter of the machine hangs at a certain distance from the sheet being cut.

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Claims (2)

1. A position sensor containing a base, a probe with a shank and a contact head mounted with a possibility of displacement along its axis relative to the base, a return spring placed between the base and the probe, and electrical contacts that are installed with the possibility of interaction with a probe that differs in , - in order to improve operational reliability, it is equipped with a spring, the sensor probe is made in the form of a cylinder composed of separate bushings arranged in series along the axis of the probe between the shank and the contact head Application Serial and the spring is mounted in stretched state in the cylinder and has one end fixed on the shank and the other - on the inner side of the probe head. 2. A sensor according to claim 1, characterized in that it is provided with a support ball mounted rotatably on the outer side of the contact head, and the center of rotation of the ball lies on the probe axis. five 0 five 0 five 0 Invention Formula 1. A position sensor containing a base, a probe with a shank and a contact head mounted with a possibility of displacement along its axis relative to the base, a return spring placed between the base and the probe, and electrical contacts that are installed with the possibility of interaction with a probe that differs in , - in order to improve operational reliability, it is equipped with a spring, the sensor probe is made in the form of a cylinder composed of separate bushings arranged in series along the axis of the probe between the shank and the contact head Application Serial and the spring is mounted in stretched state in the cylinder and has one end fixed on the shank and the other - on the inner side of the probe head. 2. A sensor according to claim 1, characterized in that it is provided with a support ball mounted rotatably on the outer side of the contact head, and the center of rotation of the ball lies on the probe axis.