JPH0650738U - Spindle air blow device - Google Patents

Abstract

(57) [Summary] [Purpose] A spindle air blow with an optimally configured connecting means that opens the air intake port on the outer wall of the spindle tip of the spindle taper hole and secures positioning with the air supply port by stopping at a fixed position by the spindle orientation. The purpose is to provide a device. [Structure] In a spindle device 10 in which a spindle 3 is mounted inside a support cylinder 2 mounted on a spindle head and is rotatably supported by a plurality of rows of bearings 4 and 5, air is attached to an outer wall of a spindle tip of a spindle taper hole 8. Connection for opening the intake port 20 and providing an air supply port 21 facing the air intake port 20 in the support cylinder 2 so as to position the air supply port 21 at the air intake port 20 when stopping at a fixed position L1 due to spindle orientation. It is a spindle air blow device 100 having a configuration.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air blow device for cleaning a spindle taper hole of a machine tool with an air flow when changing a tool. The air flow port is aligned with the spindle orientation position to supply air into the spindle.

[0002]

[Prior art and problems]

 Conventionally, an air blower that cleans a spindle taper hole of a machine tool etc. with an air flow when changing tools has an air outlet at the back of the spindle taper hole, and this drawing bolt is provided by a center through that penetrates the center of the drawing bolt. With the air supply from the rear end, the structure is such that the spindle taper hole is cleaned by air flow when changing tools. By the way, when cutting fluid is processed by the center through coolant method, the air blower cannot be used as center through air, so a passage for supplying air blow air is opened from an appropriate place on the outer wall of the spindle. Supply air to the air outlet at the back of the hole.

In the above conventional air supply path, the connection means between the opening provided at the proper position on the outer wall of the main shaft and the air supply opening on the bearing side has not yet been established as an optimum configuration, and air leakage during connection is small. It is desired that the structure be simple and simple.

[0004]

[Problems to be solved by the device]

 In view of the above-mentioned conventional problems, the present invention provides a connecting means having an optimum configuration that ensures the positioning with the air supply port by opening the air inlet on the outer wall of the spindle tip of the spindle tapered hole and stopping at a fixed position by the spindle orientation. It is an object of the present invention to provide a spindle air blow device having the same.

[0005]

[Means for Solving the Problems]

 According to the present invention, in a spindle device in which a spindle is mounted inside a support cylinder mounted on the spindle head and is rotatably supported by a plurality of rows of bearings, an air inlet is opened on the outer wall of the spindle tip of the spindle taper hole. A spindle air blow device characterized in that an air supply port facing the air intake port is provided in the support cylinder, and the air supply port is positioned at the air intake port when the spindle is stopped at a fixed position due to orientation. It is a thing.

According to the present invention, the connection between the air intake port and the air supply port is performed by the fixed position stop operation by the spindle orientation, and the extra connection operation is not required. Further, the operation of completely connecting the air intake port and the air supply port can be obtained by the connecting device of the self-closing valve.

[0007]

【Example】

 Hereinafter, an example shown in the drawings will be described. FIG. 1 is a sectional view of a spindle device having a spindle air blow device of the present invention, FIG. 2 is a front view of the present invention, and FIG. 3 is a front view and a front sectional view in which a main part is enlarged.

FIG. 1 is a cross-sectional view of a spindle device including a spindle air blow device according to the present invention, which is a cross-sectional view of a spindle device 10 including a spindle air blow device 100, and bearings 4 and 5 of the spindle device 10. Is rotatably supported on the main shaft 3 provided on the inner wall side of the support cylinder 2. The drawing bolt 1 is inserted into the center hole 3a of the spindle from the rear end side, and the collet 6 is provided at the tip of the drawing bolt 1 so that the ball 7 of the projection 6a is attached to the spindle taper hole 8 of the pull stud 11 of the tool 9. It is sandwiched and clamped by the disc spring 12. A center through 1a is opened in the drawing bolt 1 so as to pass a coolant liquid from a coolant supply source and serve as a supply path from the center hole of the tool 9 or the inner wall passage 13 of the support cylinder 2 to the external injection nozzle (above. , Publicly known).

The spindle air blow device 100 of the present invention is installed in the spindle device 10 having the above-mentioned configuration. An air intake port 20 is opened in the outer wall of the main shaft tip of the main shaft taper hole 8, and an air supply port 21 facing the air intake port 20 is provided in a closed ring 22 attached to the front edge of the support cylinder 2. Further, the air from the air supply source is pressure-fed to the air supply port 21 through the passage 23. Therefore, when the spindle key K is stopped at the fixed position L1 by the spindle orientation, the air supply port 21 is positioned so as to make a pole contact (x) with the air intake port 20.

During the spindle orientation, when the tool 9 is unclamped and the tool 9 is pulled out of the spindle taper hole 8, the air pressure-fed through the passage 23 is the air supply port as shown in FIG. 3A. It is sent from 21 to the air intake 20, and reaches the inner part of the main shaft tapered hole 8 through the passage 20a in the main shaft. From here, air blows into the spindle taper hole and blows air. In this embodiment, since the air supply port 21 and the air intake port 20 are connected with each other leaving a gap (x), there is some air leakage from this gap (x 1).

As a means for preventing the air leakage, as shown in FIG. 3 (b), the air supply port 21 is equipped with a connecting member for the self-closing valve 30, so that the connection between the air intake port and the air supply port is established. It is desirable to have a perfect relationship. That is, the self-closing valve 30 has a movable valve 31 inside and is floated by a spring 33, and the movable valve 31 is pushed down by the air pressure from an air supply source, and the valve portion 31a at the tip of the self-closing valve 30 is connected to the air intake 20. Connect by pressing against the valve seat. At this time, air is sent from the passage 32 to the air intake 20 side. Then, when the air supply is stopped, the spring 33 again pushes up the movable valve 31 as shown in the figure, and separates the both ports 20, 21.

It is needless to say that the present invention is not limited to the above-described one embodiment, and design changes can be made within the scope of the invention.

[0013]

【effect】

 According to the present invention, an air inlet is opened in the outer wall of the spindle tip of the spindle tapered hole, and an air supply port facing the air inlet is provided in the support cylinder, and the air supply port is provided when the spindle is stopped at a fixed position by orientation. In addition to simplifying the connection piping configuration, the connection between the air intake and the air supply port is completed by the fixed position stop operation due to the spindle orientation, and no extra connection operation is required. And so on. Further, the connection between the air intake port and the air supply port is completed by the connection device of the self-closing valve.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a spindle device including a spindle air blow device of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is an enlarged front view and a front sectional view of a main part.

[Explanation of symbols]

 1 spindle head 3 spindle 2 support cylinder 4,5 bearing 8 spindle taper hole 10 spindle device 20 air intake 21 air supply port 22 closing ring 30 self-closing valve 31 movable valve 32 passage 33 spring 100 spindle air blow device

[Procedure amendment]

[Submission date] September 22, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

Claims (2)

[Scope of utility model registration request] 1. In a spindle device in which a spindle is mounted inside a support cylinder mounted on a spindle head and is rotatably supported by a plurality of rows of bearings, an air intake opening is formed in an outer wall of a spindle tip of a spindle taper hole. A spindle air blowing device, wherein an air supply port facing the air intake port is provided in the support cylinder, and the air supply port is positioned at the air intake port when the main cylinder is stopped at a fixed position by orientation. 2. In a spindle device in which a spindle is mounted inside a support cylinder mounted on the spindle head and is rotatably supported by a plurality of rows of bearings, an air intake opening is formed in an outer wall of the spindle tip of the spindle taper hole. , An air supply port facing the air intake port is provided on the support cylinder, and a self-closing valve is built in the air supply port, and the air supply port is positioned at the air intake port when the fixed position is stopped by the spindle orientation. In addition, the main shaft air blow device is characterized in that the self-closing valve completely closes both connection ports by supplying air.