SU1740973A1 - Semi-automatic device for testing linear dimensions of part - Google Patents

Abstract

The invention relates to a measuring technique for controlling the linear dimensions of parts. The aim of the invention is to increase productivity by reducing the number of spindle drive drives and reducing their magnitude. The semi-automatic machine contains a base in which a spindle is installed to secure the parts to be monitored, measuring units and measuring information recording unit. The spindle has a drum, on which prismatic cams with bevels are placed in two rows evenly around the circumference with a pitch equal to the thrust fingers, while the cams of each row, .-, are beveled towards each other and are shifted circumferentially one relative to the other by half a circle. 2 yl

Description

The invention relates to measurement technology and can be used to control the linear dimensions of parts,

A device for measuring the diameters and heights of parts such as disks is known, comprising a base, a table, controlled drives for its rotation and axial movement, mounted on a stand with guides on which radial gauges are installed, axial dimensions carriage and radial meters, drives for movement of carriages. The disadvantages of the known device are the mechanism for controlling drives of rotation and axial movement of table spindles, which reduces the measurement capacity.

The closest to the invention is an automatic machine for controlling the linear dimensions of parts, including a body mounted therein a vertical spindle with a rotational drive, fixed

on the spindle, a transporting disk of controlled parts, a measuring station mounted above it, electrically connected to the actuating electromagnets.

The disadvantage of this automaton is an increased stroke drive of the spindle, which reduces the measurement performance

The aim of the invention is to improve the measurement performance by reducing the number of spindle drive drives and also by reducing their magnitude.

This goal is achieved by the fact that the spindle is provided with a drum rigidly fixed on it and placed in two rows on the cylindrical surface of the drum evenly around the circumference with a pitch equal to the diameter of the thrust fingers, prismatic cams with bevels, the areas of which are perpendicular to the cylindrical surface of the drum and are designed

cl

WITH

x |

4b o

x | WITH

for contact with thrust fingers, with the cams of each row and beveling towards each other with rolling pins circumferentially one another along half a step.

Figure 1 shows a semi-automatic, general view; figure 2 is a view along arrow A in figure 1.

The semiautomatic device consists of a base 1 on which the rolling pins 2 are mounted. A support disk 3 is fixed on the rolling pins. The spindle 4 is mounted on the base with the possibility of occasional rotation. At the end of the spindle, a collet 5 is installed with a pulley 6 connected through a thrust bearing 7 to a cylinder 8, the rod 9 of which is fixed in the support disk 3 and connected to the working medium distributor 10 by a pipeline. A spindle 11 is rigidly fixed on the spindle, on which prismatic cams with bevels 12 and 13 with pitch S are placed evenly on a cylindrical surface evenly around the circumference. Cams' pads are perpendicular to the cylindrical surface of the drum. The cams of each row are beveled towards one another and are displaced in a circle one relative to the other by a half step S / 2.

The rotation drive of the spindle is made in the form of a cylinder 14 mounted on the supporting disc, on the rod 15 of which the ring 16 is fixed with support fingers 17. The ring 16 contacts the guide bevels 2, and the fingers 17 are connected with the bevels 12 and 13 of the drum 11. The power cylinder 14 is connected pipelines with distributor 18 working environment. Based on, a measuring unit 19 is installed, containing a spring-loaded slider 20, carrying a plug-gauge 21 and screens 22 and 23 interacting with contactless converters 24 and 25 positions.

Semiautomatic works as follows. The controlled part 26 is clamped by the collet 5. The plug gauge 21 moves to the part. In terms of the amount of movement of the slider 20 to actuation from the screens 22 and 23 of the transducers 24 and 25 positions, the measurement parameters are transmitted to the measuring information registration unit. The measuring unit 19 moves to its original position. The distributor 18 is switched. The thrust fingers 17 are in contact with the bevels 12 and 13 of the drum 11. The spindle with the workpiece is rotated by the angle of the part dividing. The gauge measures the second hole and so on. At the end of the measurement, the part is opened and removed.

The semiautomatic is easy to manufacture and maintain and improves productivity.

Claims (1)

Claims of the invention A semi-automatic machine for controlling the linear dimensions of a part comprising guide pins mounted on it, a supporting disk fixed on them, a spindle mounted on the base with the possibility of occasional rotation, a collet placed on the spindle face and designed to secure the part being monitored, mounted on the spindle and rigidly connected at one end to the collet shank, the drive for moving the rod, the fixed part of which mounted on the platter, and the movable is connected to the other end of the thrust through the thrust bearing, a spindle movement drive, the fixed part of which is rigidly fixed on the platter, and the movable contact with guide pins and pins for contact with the spindle, measuring units and a measurement information recording unit, characterized in that, in order to increase the measurement performance by reducing the stroke of the spindle movement drive, it is provided with a drum rigidly mounted on the spindle and placed in two rows on the cylindrical surface of the drum evenly around the circumference with a step equal to the diameter of the stop pins; prismatic cams with bevels, the areas of which are perpendicular to the cylindrical surface of the drum and are intended to contact the thrust fingers, while the cams of each row are located beveling towards each other and are circumferentially offset from one another by half a step. about Type A