JPH06262477A - Automatic control device for jetting direction of nozzle - Google Patents

Abstract

PURPOSE:To perform high accurate nozzle direction control by arranging an oscillatable jet nozzle in the vicinity of a spindle of a spindle head, and oscillating this nozzle in a vertical direction by advancing/retracting a swivel bar energized by a spring, so that the swivel bar can be locked by a lock member or a fixed cam in a machine body side. CONSTITUTION:An oscillatable jet nozzle 5 is arranged in the vicinity of a spindle of a vertically arranged spindle head 1, and this nozzle is oscillated in a vertical direction by advancing/retracting action in a Z-axis direction of a swivel bar 6, to surely jet a cutting fluid toward a tool 3 mounted on the spindle 2. In the swivel bar 6, its movement is locked at the time of operating a lock member (brake member) 7, controlled by a control unit of concurrently serving as supporting shafts 8 arranged vertically in a side surface of the spindle head 1, and at the time of unlocking the lock member 7, by moving downward the swivel bar 6 by tension of a spring B, the jet nozzle 5 is directed toward the initial position. At the time of stopping the swivel bar 6 locked by a fixed cam 4A provided in a side of a machine body 4, the jet nozzle 5 is directed toward a direction of the tool 3 when the spindle head 1 is moved downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a device for automatically adjusting the jetting direction of a jetting nozzle for supplying cutting fluid to a work of a machine tool.

[0002]

2. Description of the Related Art Conventionally, various systems have been provided for an apparatus for automatically adjusting the jetting direction of a jetting nozzle for supplying a cutting fluid to a work of a machine tool. Further, in the method of controlling the swinging of the injection nozzle from within the NC program, a servo motor and a servo amplifier for using the additional axis of the NC are required, which is high in cost and mechanical and complicated. Therefore, there are many problems in terms of cost, mechanism configuration, software, etc.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to solve the problems.
It is an object of the present invention to provide a novel nozzle injection direction automatic control device that realizes highly accurate nozzle direction control by utilizing the movement of the Z axis without using an additional axis.

[0004]

According to the present invention, in a jet nozzle arranged at a proper position on a spindle head, the jet direction of cutting fluid is adjusted toward the tip of a tool mounted on the spindle by advancing and retracting a swing rod. , The injection direction is fixed by a restraint member that restrains the swing rod, and the spring on the swing rod pushes down the swing rod in the restraint with tension to direct the injection nozzle to the initial position, and is attached to the machine body side. The fixed cam restrains the rocking rod against the downward movement of the spindle head in the Z-axis, and directs the injection nozzle toward the tip of the tool by the downward movement of the spindle head in the Z-axis related to the tool length on the spindle. An automatic injection direction control device for a nozzle, characterized in that after the rocking rod is firmly held by the restraint member, normal processing is started.

[0005]

According to the present invention, when the injection nozzle is directed to the tool tip by the Z-axis movement of the spindle head related to the tool length on the spindle, by calling the M code in the program,
The current T number of the tool on the spindle is read, the amount of movement of the spindle head in the Z-axis direction is calculated from the tool length data in the offset memory, the nozzle direction is automatically set according to the tool, and then the nozzle direction is restricted. It is firmly held by the member and shifts to normal work processing. That is, it is possible to provide a novel nozzle injection direction automatic control device that realizes highly accurate nozzle direction control by utilizing the movement of the Z axis without using an additional axis.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below. Figure 1
FIG. 2 is a front view showing an operation sequence of an injection direction automatic control device for a nozzle of the present invention, FIG. 2 is a block diagram showing a drive system for a restraint member and a retractable cam according to the present invention, and FIG. It is a chart.

FIG. 1 shows the operation sequence of an automatic injection direction control device 10 for a nozzle according to the present invention. In FIG. 1, 1 is a spindle head in a vertical arrangement, 2 is a spindle, 3 is a tool, and 4 is a machining tool. It is a fixed body of the machine. A jet nozzle 5 for swinging is arranged near the spindle, which is a proper position of the spindle head 1, and a tool 3 mounted on the spindle 2 by advancing / retreating a swing rod 6 linked along the side surface of the spindle head 1 in the Z-axis direction. The cutting fluid jet direction is adjusted toward the tip of the. That is, the oscillating rod 6 is restrained and fixed in the injection direction when the restraining member (brake member) 7, which also serves as the support bearings 8 above and below the side surface of the spindle head 1, acts. Further, the spring B, which is entangled between the central portion of the swing rod 6 and the spindle head, separates from the spindle head 1 when the restraining member (brake member) 7 is not restrained, and tensions the swing rod 6 downward in the Z axis. To move the injection nozzle to the initial position (a) ((a) in FIG. 1).

The fixed cam 4A attached to the machine body 4 side
Stops and restrains the rocking rod 6 when the spindle head 1 moves downward in the Z-axis, and the jet nozzle 5 moves in the Z-axis direction (downward arrow) of the spindle head related to the length of the tool 3 on the spindle 1. To direct the tool toward the tip of the tool 3 ((b) of FIG. 1). In this state, the rocking rod 6 is firmly held by the restraint member 7, and then the normal processing is performed ((c) of FIG. 1).

Next, the drive system of the restraint member 7 will be described with reference to FIG. The restraint member 7 is an electromagnetic brake operated by the electromagnetic solenoid SOL1. This is the NC controller 20
It is created by the macro program of and is called M code. Then, it is operated via the PC. Of course, in the NC machine tool M, the spindle head 1 is transferred to the Z-axis direction movement by this servo motor MZ, and the table 30 is moved to the servo motors MY, M.
Transfer to the X, Y plane by X.

Subsequently, a method for implementing the present invention will be described with reference to FIGS. After confirming that the spindle head 1 is in the initial position (a), which is the ATC position ((a) in FIG. 1), by "start", "ATC operation" (a) and the subsequent "ATC end" ( A) At the same time, "read tool NO, offset" (c) is performed. And the spindle head 1 is Z
The swing rod 6 is stopped by the fixed cam 4A even by the axial movement (downward arrow), and the injection nozzle 5 is moved by the Z-axis movement (downward arrow) of the spindle head related to the length of the tool 3 on the spindle 1. "Axial movement (tool length)" (e) acts to direct it toward the tip of the tool 3 ((b) in FIG. 1). Here, the restraint member 7 acts to turn the brake ON (f) and fix the direction of the injection nozzle 5. That is, after the rocking rod 6 is fixedly held by the restraint member 7, the normal "machining" (H) is performed ((c) of FIG. 1).

Here, the presence or absence of "next machining" (K) is discriminated, and if there is no "end" (K), if there is, "Brake OF"
Then, the spindle head 1 and the swing rod 6 are moved in the upward direction of the arrow. When the spindle head moves to the ATC position, the rocking rod 6 for releasing the constraint is pushed down by the spring B in the Z-axis downward direction, and the injection nozzle 3 is directed to the initial position, which is the ATC position. (A)). After this, "ATC operation" (A) followed by "A
"TC end" (a) is performed in the same manner as the previous time.

It is needless to say that the present invention is not limited to the above-mentioned respective embodiments, and that design changes can be further made within the scope of the invention. It is applied to both vertical and horizontal machine tools.

[0013]

According to the present invention, when the injection nozzle is directed to the tool tip by the Z-axis movement of the spindle head related to the tool length on the spindle, by calling the M code in the program,
The current T-number of the tool on the spindle is read, the amount of movement of the spindle head in the Z-axis direction is calculated from the tool length data in the offset memory, the nozzle direction is automatically set according to the tool, and then the nozzle direction is restricted. It is held by a member. That is, there is an effect that it is possible to provide a novel nozzle injection direction automatic control device that realizes highly accurate nozzle direction control by utilizing the movement of the Z axis without using an additional axis.

[Brief description of drawings]

FIG. 1 is a front view showing an operation sequence of an automatic injection direction control device for a nozzle of the present invention.

FIG. 2 is a block diagram showing a drive system for a restraint member and a retractable cam according to the present invention.

FIG. 3 is a flow chart for carrying out the method of the present invention.

[Explanation of symbols]

 1 Spindle Head 2 Spindle 3 Tool 4 Main Body 4A Fixed Cam 5 Injection Nozzle 6 Swing Rod 7 Restraint Member 8 Bearing B Spring T Tension (Si) Initial Position

Claims (1)

[Claims] 1. An injection nozzle arranged at a proper position on a spindle head,
The jetting direction of the cutting fluid is adjusted toward the tip of the tool mounted on the main shaft by advancing and retracting the swinging rod, and the jetting direction is fixed by a restraining member that restrains the swinging rod. The spring pushes down the swing rod in the restraint release with tension to direct the injection nozzle to the initial position, and the fixed cam attached to the machine side restrains the swing rod against the Z axis downward movement of the spindle head, The injection nozzle is directed toward the tool tip by the Z-axis downward movement of the spindle head related to the upper tool length, and in this state, the rocking rod is fixed by the restraining member, and then the normal machining is performed. Automatic control device for the injection direction of the nozzle.