JPH04115555U - Nozzle moving device - Google Patents

Abstract

(57) [Summary] [Purpose] This invention aims to place coolant at the appropriate position for the tools mounted on the spindle of a machine tool that continuously performs cutting operations while automatically exchanging multiple different tools. The purpose of this invention is to control the direction of the nozzle that supplies water by utilizing the movement of the spindle head under NC control, thereby eliminating the need for a special actuator. [Structure] A nozzle 12c for supplying coolant to a tool 6 mounted on a spindle 5a is pivoted to a spindle head 5 so as to be swingable about an axis perpendicular to the axis of the spindle 5. The nozzle 12c is provided with an engagement bar 12d for controlling the attitude of the nozzle. It is characterized in that the table 2 on which the workpiece is positioned is provided with an engagement block 13 with which the engagement bar 12d engages as the main shaft moves back and forth.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention supplies coolant to tools attached to the main spindle of machine tools. This invention relates to a nozzle movable device.

0002

[Conventional technology]

A machine tool that performs continuous cutting using multiple different tools while automatically exchanging tools. Coolant is placed in the optimal position for each tool of different length and diameter on the machine. In order to supply coolant, a device that automatically controls the direction of coolant blowout was developed It is proposed in No. 58-126036.

0003

[Problem that the idea aims to solve]

The above conventional device uses a rotary actuator as a means to adjust the nozzle angle. Tools and nozzles are connected to the rotationally driven pulse motor and the numerical control device of the machine tool. A memory that processes and stores data about and data from this memory. a control unit that reads the information, and a signal from this control unit that instructs the pulse motor to drive. It has a complicated configuration consisting of a drive unit, etc., which is expensive and requires a lot of machining. For example, when changing from a short tool to a long tool, the nozzle orientation If this is constant, the coolant may not be applied properly to the machined surface.

0004 The purpose of this invention is to use the above-mentioned numerical control device and the signals of this numerical control device. The angle of the nozzle can be adjusted by using the movement of the machine tool without using a drive device. The purpose of this is to automatically control the process appropriately.

[0005]

[Means to solve the problem]

The gist of the present invention to achieve the above objectives is to and a column that can move forward and backward with respect to the jig bed. , a spindle head guided vertically by this column, and a spindle head that The column is rotatably supported around an axis parallel to the axis in the forward and backward movement direction of the column, and a main shaft on which a tool is mounted; and a main shaft provided in the column so as to be indexable and rotatable. In a machine tool equipped with a tool magazine that allows automatic tool exchange between the spindle and The head is pivotably supported around an axis perpendicular to the axis of the main shaft, and A nozzle for supplying coolant to a tool attached to the shaft, and a nozzle that is aligned with the nozzle. an engagement bar for controlling the posture of the nozzle extended to the body; and the jig bed. an engagement bar in which the main shaft engages with the engagement bar as the column moves forward and backward; It is characterized by having a block.

[0006]

[Effect]

With the above configuration, the tool attached to the spindle is moved by the forward movement of the column. The engagement bar engages the engagement block on the way to the tool, and in this state the length of the tool The nozzle is oriented at an appropriate spray angle relative to the tool by moving the column forward accordingly. Rotate to position.

[0007]

【Example】

Embodiments of the present invention will be described below based on the drawings. In Figures 1 and 2, 1 is Fixed base 2 is a table fixed on the fixed base 1, and a jig bed 2a is installed. On this jig bed 2a is a pallet on which the workpiece W is placed. 3 is positioned and clamped.

[0008] 4 is movable forward and backward in the Z-axis direction with respect to the table 2 and is perpendicular to the Z-axis direction. This column is slidably guided on the fixed base 1 in the X-axis direction. This collage A spindle head 5 is movably guided in the Y-axis direction (vertical direction) by the spindle head 5. The head 5 has a main shaft 5a that rotates around an axis parallel to the axis of the column 4 in the forward and backward movement direction. Rotatably mounted.

[0009] 7 is a tool magazine. This tool magazine 7 is located above the spindle head 5. is provided at the top of the spindle 4 so as to be indexable and rotatable around an axis parallel to the axis of the main shaft 5a. The tool 6 is automatically exchanged between the main spindle 5 and the main spindle 5.

0010 8 is a motor for driving the column 4 forward and backward in the Z-axis direction, and 9 is the Y-axis of the spindle head 5. a direction feed motor; 10 is a motor for indexing the tool magazine 7; 11 is a motor for indexing the tool magazine 7; A motor for rotationally driving the main shaft 5a, and 14 a motor for driving the column 4 forward and backward in the X-axis direction. It is.

[0011] 6 is a tool attached to the spindle 5a, and 12 is a tool 6 that is used to move the workpiece W. This is a coolant supply device that supplies coolant liquid to the surface to be machined. This coo The configuration of the runt supply device 12 will be explained with reference to FIG. A support stand is placed below the tip of the spindle head 5. 12a is fixedly installed, and a support shaft 12b is perpendicular to the axis of the main shaft 5a on this support stand 12a. It is provided so that it can rotate around the axis. It is attached to the main shaft 5a by this support shaft 12b. A nozzle 12c facing the tool 6 is rotatably supported, and this nozzle 12c An engagement bar 12d is provided at a required angle. At the tip of this engagement bar 12d Alternatively, a roller 12e may be provided. 12f indicates a coolant supply pipe.

0012 A gear 15 is fitted to the support shaft 12b that pivotally supports the nozzle 12c, and The spindle head 5 has a notch 16 that engages with the gear 15 so that it can move forward and backward, and The notch 16 is pressed in the direction of the gear 15 by the notch 17. The nozzle 12c can be held at a predetermined angular position by engagement with the gear 15. It has become.

[0013] On the other hand, on the table 2 is an engagement block 1 with which the engagement bar 12d engages. 3 is fixed.

[0014] An outline of the operation of the nozzle 12c will be explained with reference to FIG. Raising the spindle head 5 At this point, tools are exchanged between the tool magazine 7 and the spindle 5a, and the spindle head 5 After descending to the position corresponding to the processing position of W, the column 4 moves forward toward the workpiece W. Move forward. This forward movement of the column 4 causes the tool 6 attached to the main shaft 5a to move. As shown in FIG. 4(A) on the way to the workpiece W, the engagement bar 12d touches the table. It engages with an engagement block 13 fixedly provided on 2.

[0015] With the engagement bar 12d engaged with the engagement block 13, the column 4 is connected to the tool 6. The column 4 is moved forward according to its length, and as shown in FIG. 4(B), the forward movement of the column 4 The nozzle 12c gradually rotates downward to keep the coolant spray angle constant at the tool 6. Hold in proper position. After that, the engagement bar 12d is released from the engagement block 13, Machining of the workpiece W is started.

[0016] The details of the operation will be explained below based on the flowchart of FIG.

[0017] The signal from the "machining program storage means" and the "tool change command determination means" and is input to the "Tool No. reading means".

[0018] The signals of the “tool change command determination means” and “tool NO. reading means” and the “work Compare the signals with the ``tool change data storage means'' and select the necessary data using the ``tool data selection means.'' Select the required tool from the tool magazine.

[0019] If the tool change command is ON (tool change exists) in the above-mentioned "tool change command determination means" When it is determined that there is a The pulse is input to the "movement calculation means" and is output to the Z-axis motor via the "Z-axis motor pulse distributor". (Z-axis forward/backward drive motor 8) is activated to advance the column 4 by a predetermined amount in the Z-axis direction. let

[0020] After the above, the signal of "Z-axis motor pulse distributor" is The information is input into the "storage means". Signal set from "X, Y axis direction movement amount storage means" is input to the "X-axis motor pulse distributor" and "Y-axis motor pulse distributor" respectively, The column 4 and and moves the spindle head 5 by a predetermined amount in the X-axis direction and the Y-axis direction.

[0021] As described above, the engagement bar 12d engages with the engagement block 13.

[0022] The "Y-axis motor pulse distributor" to which the signal was input above is the "opening/closing means" A signal is sent to the ``opening/closing means'' to open the opening/closing means.

[0023] Here, the signal from the "tool data selection means" is the "current tool data storage means". This "current tool data storage means" and "previous tool data storage means" are sent to Based on each signal, the tool length difference calculation means calculates the tool length difference. The amount of movement in the Z direction based on this difference is calculated by the "second Z-axis movement amount calculation means." The motor 8 for forward/backward movement in the Z-axis direction is operated via the "Z-axis motor pulse distributor". let

[0024] As a result, the column 4 is moved back and forth by an amount corresponding to the difference in tool length, and the engagement bar 12 d within the engagement block 13 to adjust the direction of the nozzle 12c according to the length of the tool. and set it.

[0025] After the above, the spindle head 5 is raised and the engagement bar 12d is moved to the engagement block 1. Remove from 3.

[0026] First, the signal from the "Z-axis motor pulse distributor" is "X, Y-axis reverse direction". The amount of movement is input into the "movement amount storage means". The main The signal for moving the shaft head 5 in the opposite directions of the X and Y axes is transmitted by an "X-axis motor pulse distributor". Input each to the "Y-axis motor pulse distributor" and connect the motor 14 for forward/backward drive in the X-axis direction The Y-axis direction feed motor 9 is operated.

[0027] The signal of the "Y-axis motor pulse distributor" is connected to the "first Z-axis movement amount calculation means" ``3rd Z-axis movement amount'' is calculated by adding the movement amount calculated by the ``second Z-axis movement amount calculation means'' to is input into the calculation means.

[0028] Based on the signal from the "third Z-axis movement amount calculating means", the spindle head 5 is moved in the opposite direction of the Z-axis. Input a signal to move in the Z-axis direction to the "Z-axis motor pulse distributor" to perform forward and backward movement in the Z-axis direction. The spindle head 5 is moved backward by the driving motor 8.

[0029] As a result of the above, the spindle head 5 returns to the original machining position, and the engagement bar 12d is released from the engagement block 13.

[0030] In the above example, the nozzle is adjusted according to the difference between the current tool length and the previous tool length. Although the example of controlling the angular position of the nozzle 12c has been described, the sensor that detects the angle of the nozzle The nozzle angular position is set as an absolute value based on the angle command value according to the length of the tool. It is also possible to control.

[0031]

[Effect of the idea]

As described above, the present invention is mainly used in machine tools that have two or more NC control axes. The shaft head is pivotably supported around an axis perpendicular to the axis of the main shaft, and the A nozzle for supplying coolant to a tool attached to the spindle; an engagement bar for controlling the posture of the nozzle that extends integrally with the jig base; The engagement bar is fixedly installed on the head side and is connected to the engagement bar by relative movement between the spindle head and the column. and an engagement block that engages, and uses NC control to adjust the direction of the nozzle to the tool. Since the structure is designed to control according to the length, a special actuator is required. It can be easily installed on existing machining centers without the need for Town is planned.

[Brief explanation of drawings]

[Figure 1] Side view of a machine tool equipped with the device of the present invention

[Figure 2] The same plan view

[Figure 3] Cross-sectional view of main parts of the present invention

[Figure 4] Diagram explaining the operation of the present invention

[Figure 5] Flowchart explaining the operation of the present invention

[Explanation of symbols]

1 Fixed base 2 table 2a Jig bed 4 Column 5 Spindle head 5a Main shaft 6 Tools 7 Tool magazine 12 Coolant supply device 12b Support shaft 12c nozzle 12d Engagement bar 13 Engagement block

Claims (1)

[Scope of utility model registration request] Claim 1: A workpiece positioning jig bed installed on a fixed base, a column movable forward and backward relative to the jig bed, and a spindle head and a spindle head vertically movably guided by the column. , the main shaft is rotatably supported on the main shaft head about an axis parallel to the axis in the forward and backward movement direction of the column, and on which a tool is mounted, and the main shaft is provided on the column so as to be indexable and rotatable. In a machine tool equipped with a tool magazine in which tools can be exchanged, coolant is supplied to a tool mounted on the spindle and pivoted to the spindle head so as to be swingable about an axis perpendicular to an axis of the spindle. an engagement bar extending integrally with the nozzle for controlling the attitude of the nozzle, and a main shaft fixed to the jig bed that engages with the engagement bar as the column advances and retreats. A nozzle movable device comprising a mating engagement block.