JPH04210314A - Malfunction checking mechanism of nc multiple spindle drilling machine - Google Patents

Abstract

PURPOSE:To prevent malfunction by inserting two guide pins into a template for confirming the hole position in the row and the column direction, and controlling to drive an NC multiple spindle drilling machine according to the signal from a sensor to detect the inserting condition. CONSTITUTION:A column direction confirming plate 10 is arranged parallel to a bed 1 on a loading table 9 on the floor on one side of the bed 1. A row direction confirming plate 11 is fitted on the side of the body 1 of a column 2 in the direction normal to the column direction confirming plate 10. These direction confirming plates 10, 11 are provided with holes which are fitted to the recessed hole group. And the column 2 is provided with guide pins 14, 20 which can be elevated by means of cylinders 13, 19, and these guide pins are inserted into/released from the holes of both direction confirming plates 10,11. Boring operation is achieved when the guide pins are inserted into and the lower end limit switches 17, 23 get actuated. When the guide pins 14, 20 are withdrawn and the upper end limit switches 16, 22 get actuated, they are shifted to the next hole position.

Description

[Detailed description of the invention]

[00011

[Industrial Field of Application] The present invention relates to a malfunction check mechanism for an NC multi-spindle drilling machine. [0002] Conventionally, there was no NC multi-spindle drilling machine equipped with a mechanism to check for malfunctions, and machining was performed directly using NC data. [0003]

[Problems to be Solved by the Invention] Conventionally, NC machining data has been output to an X-Y plotter or the like, and a programmer has checked the number of holes and the hole arrangement. Therefore, if there is a check omission during data checking, processing will result in incorrect processing. Furthermore, even during actual machining, if the operator makes a mistake in operating the machine, the hole position will be misaligned, resulting in erroneous machining. [0004]

[Means for Solving the Problems] The structure of the present invention for solving the above problems includes each template for individually confirming the position of a large group of workpieces in the column direction and the row direction, and the predetermined holes. Two guide bins that can be inserted into and removed from the holes of each template at different positions, a sensor that detects the engagement state of each guide bin, and an NC multi-spindle drilling machine that is driven and controlled by input signals from the sensors. The invention is characterized by comprising a control means for controlling. [0005]

[Operation] According to the above configuration, the guide bin allows
When both sensors in the row direction are activated, the NC multi-axis drilling machine is driven and starts the six-turn operation, but when at least one sensor is not activated, the NC multi-axis drilling machine is not driven. [0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. [00071 As shown in FIG. 4, a gate-shaped column 2 is mounted on a pair of left and right beds l, and is rotated in the row direction (back and forth direction) by a pair of left and right ball screws 3 and a drive motor 4 that rotates these ball screws 3 synchronously. It will be constructed so that it can be moved to. and,
A multi-shaft part 7 is supported on the column 2 so as to be movable in the row direction (horizontal direction) by a ball screw 5 and a drive motor 6 that rotates the ball screw 5. are supported side by side in the row direction, making it possible to drill holes in the workpiece W. [o o O8] On the floor located on one side of the bed 1, as shown in FIG. 1, a column direction confirmation plate 10 is installed parallel to the bed 1 via an installation stand 9. At the same time, as shown in FIG. 2, a row direction confirmation plate 1-1.1 is attached to the main body side of the column 2 so as to be orthogonal to the column direction confirmation plate 10. Each of these confirmation plays 1 to 10, 1.1 is the workpiece W
This is used to check the position of the hole to be machined in the workpiece W, and is manufactured in advance to match the pitch, number of rows, and number of columns of the six-group arrangement on the workpiece W. Furthermore, when each confirmation plate 10.11 is attached, it is positioned and fixed so that the processing origin of the workpiece W and the origin of each confirmation plate 101.1 are at the same position. [0009] Then, a first mounting plate 12 is integrally attached to the column 2 on the side of the main body part along with the row direction confirmation plate 11, and the first mounting plate 12 is attached vertically to the first mounting plate]-2. A guide bin 14 that can be inserted into the lower end of the piston rod of the air cylinder 13 through the row direction confirmation plate 11 and removably fit into each of the column direction confirmation plates 1 to 10.
is attached. Also, on the first mounting plate 12, an upper end limit switch is selectively activated by a dock 15 attached to the lower end of the piston rod of the air cylinder 13.
6 and a lower end limit switch 17 are attached. [00101 On the other hand, an L-shaped second mounting plate 18 is integrally attached to the multi-axis portion 7 of the column 2, and the lower end of the piston rod of the air cylinder 19 is vertically attached to the second mounting plate 18. A guide pin 20 is attached to each member of the row direction confirmation plate 11, which can be removably inserted into each person. Further, the air cylinder 1 is mounted on the second mounting plate 18.
An upper end limit switch 22 and a lower end limit switch 23 which are selectively activated by a dock 21 attached to the lower end of the piston rod 9 are attached. [0011] As shown in FIG. 3, the two air cylinders 13 and 19, when air is supplied into the cylinders by the air hose 24 and the bisto cylinder is lowered, and the air supply is stopped, the pistons are moved by the compression springs 25. The rod is designed to rise. [0012] Furthermore, the detection signals of the four limit switches 16, 17, 22, and 23 are input to a control circuit (not shown) in the operation panel, and in this control circuit, the two lower end limit switches 17. Holes are drilled by the multi-axis section 7 only when the detection signals of '23 and 23 are input together, and only when the detection signals of the two upper end limit switches 16 and 22 are input together. 7 only) drives and controls the NC multi-spindle drilling machine to move to the next drilling position. [0013] With this configuration, when the column 2 is set at the processing position of the workpiece W, first, before drilling, air is supplied to one air cylinder 13.19 to lower the piston rod. let [0014] At this time, the two guide pins 14.20 fit into the holes of the two confirmation plates 10.11 (in this case, the hole positions are good), and the two lower end limit switches 1
7. When 23 is activated, the multi-shaft part 7 starts drilling. On the other hand, if one of the guide bins 14 or 20 is not fitted into the hole of the confirmation plate 10 or 11 (in this case, the hole position is defective) and the lower end limit switch 17 or 23 is not activated, the NC multi-axis The drilling machine is stopped and inspected. [0015] When the hole machining is completed, the air supply to the two air cylinders 13 and 19 is stopped and the piston rod is raised. [0016] This allows the two guide bins 14.20
is extracted from the confirmation plate 10.11, and
The two upper limit slits 16.22 are activated. Then, in response to this signal, the entire column 2 or only the multi-axis section 7 is moved to the next hole machining position. Of course,
If either the upper end limit switch 16 or 22 is not activated, the NC multi-spindle drilling machine will stop and the next machining will not be performed. [0017] Note that the present invention is not limited to the above embodiments,
It goes without saying that the drive means for the guide bins 14, 20, the detection means for detecting the fitted state of the guide bins 14, 20, etc. can be changed without departing from the gist of the present invention. [0018]

As explained above, according to the present invention, the machined hole group is divided into two directions, the row direction and the nine column direction, and the positions are confirmed separately using the template and the guide bin. By eliminating malfunctions, it is possible to avoid erroneous processing.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the mechanism of the present invention.

FIG. 2 is a plan view of each template used in the mechanism of the present invention.

FIG. 3 is a sectional view of an air cylinder used in the mechanism of the present invention.

FIG. 4 is a plan view of an NC multi-spindle drilling machine equipped with the mechanism of the present invention.

[Explanation of symbols]

10 Column direction confirmation plate 11 Row direction confirmation plate 14 Guide bin 16 Top limit switch 17 Lower end limit switch 20 Guide bin 22 Top limit switch 23 Lower end limit switch

[Figure 3]

Claims (1)

[Claims] 1. Each template for individually confirming the position of a workpiece hole group arrangement in the column direction and the row direction, and the template is capable of being removably fitted into each hole of each template at the predetermined hole position. An NC multi-spindle drilling machine comprising two guide pins, a sensor for detecting the fitted state of each guide pin, and a control means for driving and controlling the NC multi-spindle drilling machine based on an input signal from the sensor. Malfunction check mechanism.