CS251975B1 - Device impulse control of the bend with retractable sensor - Google Patents

Abstract

The device allows checking the bending of the tool machining even materials prone to the formation of continuous chips. The device is composed of an evaluation device with a retractable sensor, a non-contact micro-switch and an aperture, which is slidably stored in the casing of the device and is vacuumed by a cylinder. After being pulled out of the housing by the continued pressure of the cylinder, the retractable sensor makes a tilting movement towards the tip of the tool, and by moving the aperture in the field of view of the non-contact microswitch, a notification signal about the status of the tool is coded for the machine control center.

Description

251973

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pulse bending control of a tool by means of a withdrawable sensor. The check of the tool bend by the withdrawal sensor is suitable, in particular, for the handling of susceptible materials. The device is a new typified element of single-purpose machining machines, mainly machines incorporated into automated production systems, pre-operation by manipulators.

To date, such a device is not known.

The existing tool control device is based on the principle of contact monitoring of the tool by a spring sensor connected to the microswitch. When the tool is bent, the pre-tensioned sensor turns on the switch that evaluates the machine fault.

Such a device is unreliable, by over-contacting the sensor with the tool there is a risk of winding up the chips and thereby disabling it. The device is also sensitive to mechanical failures of the microswitch.

The aforementioned drawbacks are eliminated in the apparatus according to the invention, the essence of which is that it consists of an evaluation device for bending the tool which is slidably mounted in the housing of the apparatus and is connected by means of a piston rod with a linear pneumatic or hydraulic motor. The bending device of the tool is at the same time assembled from a retractable sensor inserted into the protective sleeve, rotatably supported by its hinge on the pin and the abutment, and from the diaphragm of the withdrawable sensor connected to the slide of the withdrawable sensor as well as the contact microswitch and guide Springs. The retractable sensor touches the piston rod stop with its round armrest. The instrument housing is provided with spring loaded contacts of the evaluation device. Compressed air connections are provided on the side of the housing.

By creating this new typed element of the single-purpose machine according to the invention, that is, a tool-pulse control device with a retractable sensor, it has been achieved that the control of the tool takes place at a specified time, typically after the tool operation has been transferred, its rotation has stopped, and therefore the danger winding the chips into a pull-out. The evaluation device is comprised of reliable contactless electric elements and an electrical circuit control is introduced into the actual tool break control cycle, which eliminates misalignment of the tool breakage. Conceptually, the arrangement of the device is chosen so that its construction is simple and small in size. An example of an arrangement of an instrument for pulsing the bend of a tool with a withdrawable sensor is schematically shown in a bococo-like cut on the attached drawing.

According to the invention, the device for pulse monitoring of the tool bending by means of a withdrawable sensor forms a new, standardized element of a single-purpose machine, which is composed of a bending device 5 of the tool 1, slidably mounted in the housing 8, connected by a piston rod 7 to the withdrawable cylinder 9. The bending evaluation device 5 of the tool 1 is composed of a retractable sensor 2 which is inserted into the protective sleeve 3a rotatably mounted on the pin 18 and which engages the spring 15 guided by the mandrel 14. Further to the evaluation device 5 there is a slide 12 of the withdrawable sensor 2, connected to the sensor 2 at the point of its mounting on the pin 18, as well as the contactless microswitch 13. The withdrawal sensor 2 with its ball support 1 contacts the stop B of the piston rod 7. The housing 8 is provided with spring-loaded contacts 4 of the evaluation device 5 and a flange 11, on which the ID and 19-pressure medium connections are provided.

The function of the instrument for pulse control of the tool deflection by the withdrawable sensor is as follows:

The operating head with the tools 1 returns to the basic position after the working operations, where the spindle rotation with the tools 1 is stopped. By switching the respective distributor to the pressure medium through the connection 10 to the cylinder 9, which by means of the stop 6 piston 7, the evaluation device 5 is extended by the withdrawable sensor 2 to the front position until it stops at the face of the housing 8 of the device. By continuing to press the stop B of the piston rod 7 onto the spherical support 16 of the withdrawable sensor 2, the displacement sensor 2 opposes the pressure of the spring 15 of the glass around the pin 18, until its bent cone encounters adequate pressure on the tool tip 1, thereby dropping the retractable sensor 2. The point of contact of the withdrawable sensor 2 on the tool 1 is selected with a stop on the retracted cutting surface. The shutter 12 performs a movement on the circular path until the viewing angle of the contactless microswitch is overlapped. The evaluation device 5 sends a signal to the control system that the tool 1 is undisturbed. In the case of breaking the cutting part of the tool 1, the withdrawable sensor 2 continues to tilt the tool 1 up to the stop of the guide pin 14 of the spring 15 on the wall of the evaluation device 5. The aperture 12 exposes the field of view of the contactless microswitch 13, after its previous blanking and you the evaluation device 5 sends a bend signal to the machine control unit1. By switching the switchgear, the pressure medium 5 is supplied to the connection 19 and the cylinder 9 by means of the stop 6 of the piston rod 7, the evaluation device 5 with the withdrawable sensor 2, which is equalized by the spring pressure 15, is connected to the housing cavity 8. the device is pulsed and takes a short time.

Claims (3)

251975 Impulse control device for instrumentation! 1 with the pull-out sensor 2 can be used as a standardized single-purpose machine tool. SUBJECT]. An instrument for impulse control of the tool by a retractable sensor, intended to control tools which are capable of producing continuous chips, characterized in that it is composed of an evaluation device (5) for bending the tool (1) slidably mounted in the housing (8) , connected by a rail (7) to the cylinder (9). Apparatus according to claim 1, characterized in that the withdrawable sensor (2) of the evaluation device (5) is rotatably mounted on a pin (18) and is supported on a spring (15) mounted on the mandrel (14). a diaphragm (12) is attached to the cap (18) and its spherical support (18) is in contact with the piston rod (7), and a contactless microswitch is attached to the inner side of the housing (8) (13). 3. Apparatus according to claim 1 or 2, characterized in that the housing (8) of the apparatus is provided with resilient contacts (4) of the evaluation device (5). 1 sheet of drawings