SU862010A1 - Device for counterbalancing vertical poppet sleeve of coordinate measuring machine - Google Patents

Description

(54) DEVICE FOR EQUALIZATION OF VERTICAL PINOUS COORDINATE MEASUREMENT MACHINE

one

 The invention relates to mechanical engineering, in particular, to devices for balancing Br in the vertical direction of moving parts of coordinate measuring machines.

A device for balancing the PINOLE of coordinate measuring machines in which the equilibrium of the vacuum force is created by the counterbalance fl is known.

The drawback of the device is the large weight of the counterweight, which makes it impossible to use the device in precision machines.

The closest to the invention in its technical essence is a device for balancing a vertical quill of a coordinate measuring machine, having four p j6O4He faces, containing a base with guides into which the machine quill is installed, a pneumatic cylinder with an air pressure regulator and a system for supplying compressed air to the pneumatic cylinder and to guides to form the aerostatic support of PINOLE 21.

In this device, the balancing is created by means of a pneumatic cylinder with a piston that is connected

with quill, compressed air is supplied to the cylinder. The air pressure force acting on the piston balances the quill. The magnitude of the balancing force is controlled by the pressure regulator of the compressed air supplied to the cylinder.

The disadvantage of the device is

10, low balancing accuracy is associated with the fact that the pneumatic cylinder is installed at a certain distance from the pinhole at a certain distance and, accordingly, the balanced force applied to

15 the distance from the center of gravity of the linoleum, causes it to skew and deform, which reduces the accuracy of the PINON of the measuring and measuring machine.

20

The aim of the invention is to improve the accuracy of the balancing.

The goal is achieved by the fact that one of the faces of the PINOLA is performed at an angle

25 relative to its vertical axis, and the guide with which this face interacts; is tangent with the possibility of moving in the horizontal plane under the action of the piston

0 pneumatic cylinder.

FIG. 1 shows the device, a general view) of FIG. 2 is a section A-A in FIG. one.

The device contains a base 1 with guides 2, 3, 4.5, into which a quill 6 with four working faces is installed, a pneumatic pneumatic 7 with a piston 8 and an air pressure regulator 9, as well as a system for supplying compressed air to the pneumatic cylinder 7 and to guides 2, 3, 4, 5, made in the form of pipelines 10, connected with corresponding throttling openings 11 and channels 12 in guides 2, 3; 4, 5 and with highway 13.

The guides 2, 3, 4 are fixed on the base 1, and the guide 5 is mounted for movement in the horizontal plane under the action of the piston 8 of the pneumatic cylinder 7 and interacts with the face 14 of the quill 6, which is performed under the coal relative to its vertical axis.

The device works as follows.

Compressed air from line 13 through channels 12 and throttling orifices 11 enters the gaps between the working edges of the quill 6 and the guides 2, 3, 4, 5 and forms aerostatic supports of the quill, which due to this can move without friction along its axis, t. e. up or down.

The edge 14 of the quill is processed at an angle relative to its vertical axis, therefore the force M of the air pressure in the gap between the guide 5 and the edge 14 of the pinnoli 6 is directed at an angle relative to the force N of the air pressure that occurs in the gap between the opposite edge 15 of the quill 6 and the guide 2. Due to this, a force P is formed, acting along the axis of the quill in the upward direction, i.e. in the opposing direction with respect to the force of the weight of the quill direction. This force is the balancing force of the quill. When shuffling quill up

the guide 5 under the action of the force generated by the pneumatic cylinder 7 and the piston 8 moves in the direction of the quill b, ensuring a constant air gap between the edge 15 of the quill b and the guide 2. The air pressure — in the volume between the pneumatic cylinder 7 and the piston 8 should be such so that the counterbalancing force P is equal in magnitude to the weight of the quill weight. The air pressure in the pneumatic cylinder 7 is controlled by a pressure regulator 9.

The device makes it possible to increase the linearity of movement of the quill by forming a balancing force passing through the center of the weight of the quill, which improves the accuracy of balancing the quill of the coordinate measuring machine having four working faces.

invention formula

A device for balancing a vertical quill of a coordinate measuring machine with four working faces, containing a base with guides into which the machine quill is installed, a pneumatic cylinder with an air pressure regulator and a compressed air supply system to the pneumatic cylinder and to the guides to form an aerostatic pinnap characterized in that, in order to improve the accuracy of balancing, one of the faces of the quill performs at an angle relative to its vertical axis, and a guide with which This face is installed with the possibility of moving in the horizontal plane by the action of the pneumatic cylinder piston.

Sources of information taken into account in the examination

1.ABTOpctoe certificate of the USSR 503644, cl. B- 23 B 47/26, 1976.

2. US patent 3831283, cl. 33-174, 1974 (prototype).

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Claims (1)

Claim A device for balancing a vertical pin of a coordinate measuring machine having four working faces / containing a base with guides in which a machine pin is installed, a pneumatic cylinder with an air pressure regulator and a system for supplying compressed air to the pneumatic cylinder and to guides for forming .. aerostatic support of the pinole, characterized in that, in order to increase the accuracy of balancing, one of the sides of the pinole is made at an angle relative to its vertical axis, and the guide with which tvuet this face, it is movable in a horizontal plane under the action of the piston of the pneumatic cylinder.