JPS61173829A - Automatically tool exchanging socket - Google Patents

Abstract

PURPOSE:To enable a tool to be automatically exchanged even without a fixed position stopping function in a main spindle, by providing a means, which aligns the center position relating to rotation of a socket main unit to that of a tool sleeve, in the socket main unit and the tool sleeve. CONSTITUTION:A steel ball 31 and 32, being fitted to a steel ball holding hole drilled in a socket main unit 24, protrusively moves from a mounting surface 24a of a tool sleeve 33 in the socket main unit 24 by sliding a clamping collar 25. While the clamping collar 25, protrusively moving by its sliding operation the steel balls 31 and 32, mounts the tool sleeve 33 to and removes it from the socket main unit 24. In order to align the center of the steel ball 31 to the center of a steel ball holding groove 33b in the tool sleeve 33, the socket main unit 24 integrally forms in its end surface a positioning pawl 35 being a positioning member. While the tool sleeve 33 also integrally forms in its flange part a positioning pawl 36 being a positioning member.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a tool exchange socket and is designed to enable automatic tool exchange.

<Conventional technology> Hole drilling is used for separate machining in radial one-wheel presses, horizontal drilling machines, horizontal boring machines, etc. The hole drilling is used for separate machining, and the tool exchange socket is used for quick change as shown in Figure 3. A type of tool exchange ticket is used in Issei.

This tool change bucket 20 is used for drilling holes on the main shaft 1 of a processing machine.
It is integrated into the tool mounting taper hole 1a with a draw bolt 2, and is driven to rotate together with the main shaft l.

The taper y, IJ-pipe 3 is integrally fixed to the socket body 4 by shrink fitting, etc., and the clamp collar 5 has a diameter portion of the socket body 4 and a diameter portion of the collar 60 that fits on the outer periphery of the socket body 4. The clamp collar 5 is slidably fitted in parallel to the direction of the rotation axis, and the clamp collar 5 is manually slid in the vertical direction in the figure.

When the collar 6 is biased toward the retaining ring 7 fixed to the socket body 4 by a compression spring 8, the compression spring 8 always biases the clamp collar 5 downward in the figure. The steel balls 9 and 10 fit into steel ball holding holes drilled in the socket body 4, and the steel balls 9 and 10 are integrated with the tool 11 by sliding the clamp collar 5. The tool sleeve 12 is attached to and detached from the socket body 4 by the protruding movement of the steel balls 9 and lO caused by the sliding operation of the clamp collar 5.

The next state shown in FIG. 3 is the taper 9i of the tool sleeve 12.
The diameter portion 12a is inserted and fitted into the tapered hole of the socket body 4, and the steel ball 9 is fitted into the steel ball holding groove 12b formed in the tapered false diameter portion 12a of the tool sleeve 12.
The steel balls 9 and lO are held by the inner diameter part of the clamp collar 5 which is biased by the biasing force of the compression spring 8 while the socket body 4 is in contact with the thrust groove 12c of the tool sleeve 12.
and the tool sleeve 12 are integrally fixed.

The hole is drilled using the tool 11 using the tool exchange mket 20 described above.
When removing the next tool sleeve 12 from the socket body 4 and replacing it, manually operate the clamp collar 5 upward in the figure to align the evacuation groove 5a of the clamp collar 5 with the positions of the steel balls 9 and 10. The steel balls 9 and 10 are in the retraction groove 5a.
In this state, pull the tool sleeve 12 downward in the figure to remove the tool sleeve 12 from the socket body 4. Then, to drill a new hole, insert the tool sleeve 12 integrated with the tool 11 into the socket body 4, aligning the center position of the steel ball holding groove 12b of the tool sleeve 12 with the steel ball 9, and then press the tool sleeve 12 into the socket body 4. The spring force of the spring 8 urges the clamp collar 5 downward in the figure, and fiAff9 and l
O is the steel ball holding part of the tool sleeve 12 @12b and the thrust)
The tool sleeve 12 and the socket main body 4 are integrally fixed by fitting into the groove 12c.

<Problems to be Solved by the Invention> In the tool exchange socket described above, when inserting the tool sleeve 12, the position of the steel ball 9 and the center position of the steel ball holding @ 12b of the tool sleeve 12 must match. , the steel ball 9 remains retracted into the retraction groove 5a, and the steel ball 9 interferes with the Taber false diameter portion 12B of the tool sleeve 12, preventing the clamp collar 5 from sliding downward in FIG. 4 and the tool sleeve 12 are not in a clamped state.

By the way, in recent years, the machining sector has been moving toward automation and unmanned machining, but when using the above-mentioned tool change W kerato when performing automated or unmanned machining, The center position of the steel ball 9 fitted into the steel ball fitting hole of the socket body 4 and the steel ball holding groove 12 of the tool sleeve 12
A means for aligning the center positions with respect to b is required, and the above-mentioned socket for tool exchange cannot be attached to an automatic tool changer to achieve automated or unmanned drilling.

The present invention was developed in view of the above-mentioned circumstances, and is an automatic tool changer in which a structure is added to the socket body and tool sleeve to make the rotational center positions of the socket body and tool sleeve coincide, making use of the conventional quick change function. By providing a socket, it not only simplifies the structure of the automatic tool changer, but also enables automatic tool change even if the processing machine does not have a function to stop the rotation of the main spindle at a fixed position. The purpose is to reduce costs.

Means for determining problems> The structure of the present invention for achieving the above object is based on the above-described structure of the socket body which is fitted into the tool mounting hole of the main spindle of the processing machine and into which the tool sleeve for holding the tool is fitted. A steel ball t, a part of which can protrude into the tool sleeve fitting part and which can be drilled into the outer circumferential surface of the tool sleeve and engages with the companion locking hole when the tool sleeve is fitted into the socket body; provided in the socket body; On the other hand, the socket body and the tool sleeve are provided with positioning members that abut each other at a position where the steel ball and the locking hole engage.

Effect> When fitting the tool sleeve into the socket body, the socket body and the positioning member provided on the tool sleeve are brought into contact with each other to align the positions of the steel balls and the locking holes. In this state, the tool sleeve is inserted into the socket body, the steel balls are engaged with the locking holes, and the socket body and the tool sleeve are integrally fixed. Therefore, by providing the positioning member, automatic tool exchange becomes possible without providing a special positioning function to the processing machine.

Embodiment> Fig. 1.2 shows an automatic tool changing socket according to an embodiment of the present invention, and Fig. 1 shows a longitudinal section of the tool sleeve before it is chucked into the socket body. FIG. 2 shows a longitudinal section of the tool sleeve in a state where it is chucked to the socket body.

In the illustrated socket 21 for automatic tool change, a socket main body 24 is integrally fixed to a main shaft 22 of a processing machine with a pull bolt 23, and the socket main body 24 rotates together with the main shaft 22. The clamp collar 25 is slidably fitted in parallel to the rotational axis direction across the force diameter part of the socket body 24 and the diameter part of the collar 26 that fits into the force cylinder of the socket body 24. When the shift lever 27 is actuated in the rotation axis direction (vertical direction in the figure), it slides in the vertical direction via the pawl 28.

The collar 26 is a retaining ring 29 fixed to the socket body 24.
9I by the compression spring 30, and always urges the clamp collar 25 downward in the figure. The steel balls 31 and 32 fit into the steel retaining holes drilled in the socket body 24, and the steel balls 31 and 32 are attached to the tool sleeve 33 of the socket body 24 by sliding the clamp collar 25 (1j1
24 ab, the tool sleeve 33 is attached to and detached from the socket body 24 by the protrusion movement of the steel balls 31 and 32 caused by the sliding operation of the clamp collar 25. The tool sleeve 33 can be replaced automatically by operating in synchronization with the sliding movement of the clamp collar 25 in the vertical direction in the figure.

In order to automatically exchange the socket body 24 and the tool sleeve 33, it is necessary to synchronize the shift lever 27 and the exchange arm 34 of the automatic tool changer, but as shown in FIG. Before being chucked into the main body 24, the center position of the relationship between the center of the steel ball 31 and the center of the steel ball holder 11133b, which is a friend locking hole provided in the tip diameter portion 33aIA of the tool sleeve 33, is as follows. If they do not match, the steel ball 31 will interfere with the inner diameter portion of the clamp collar 25 and the tip diameter portion 33a of the tool sleeve 33, and the clamp collar 25 will not be able to slide downward in the figure even when the shift lever 27 is operated. steel ball 3
1 center and the center of the steel ball holding groove 33b of the tool sleeve 33, a positioning claw 35, which is a positioning member, is integrated with the end face VC of the socket body 24, and a positioning claw 35 is also integrated into the flange of the tool sleeve 33. The positioning claws 36, which are members, are integrated, and the positioning claws 35 and 36 are connected to the steel balls 9.
The center of the groove 33b and the center of the steel ball holding groove 33b can come into contact with each other at the same position. The positioning claws 35 and 35 are rotated by the synchronized operation of the shift lever 27 and the exchange arm 34 and the rotational operation of the main shaft 22 in the direction of the arrow.
By bringing these into contact with each other, the center of the steel ball 31 and the center of the steel ball holding @33b of the tool sleeve 33 can be automatically positioned.

In the figure, 24b is the flange surface of the socket body 24, 25a is the retraction groove for the steel ball 31, 25b is the inner diameter of the clamp taper, and 33c
3 is a thrust groove, 37 is a roller bin, and 38 is a roller.

Next, the operation of the automatic tool changer 21 having the above structure will be explained.

In the state shown in FIG. 1, the clamp collar 25 is slid upward while compressing the compression spring 30 until it comes into contact with the flange surface 24b of the socket body 4 via the claw 28 by the operation of the shift lever 27. In this state, when the exchange arm 34 is operated while rotating the main shaft 22 at a low speed in the direction of the arrow, and the tool sleeve 33 is slid upward, the positioning pawl 35 integrated on the end surface of the socket body 24 and the tool sleeve 33 are moved. Positioning pawl 36 integrated into the flange of
contact, and the rotation of the main shaft 22 is transmitted to the tool sleeve 33 side. The center positions of the #4 ball holding grooves 33b drilled in the socket coincide with each other, and in the next state, the socket body 24 and the tool sleeve 33 rotate together.

A roller 38 is connected to the exchanger 434 via a roller bin 37.
is rotatably supported, and the roller 38 is connected to the tool sleeve 33.
It is also rotatable. In the above state, slide the exchange arm 34 upward until it comes into contact with the tool sleeve 33 mounting face 241L of the socket body 24, and then slide the change lever 27t downward. When the steel ball 31 is moved, as shown in FIG.
33c, the socket body 24 and the tool sleeve 33 are integrally fixed by the clamp taper inner diameter 25b of the clamp collar 25 and the biasing force of the compression spring 30. Also,
The tool sleeve 33 is attached to the socket body 24. When replacing the sockets from the socket body 24, it is best to slide the shift lever 27 upward and slide the replacement arm 34 downward while the clamp collar 25 is in contact with the flange surface 24b of the socket body 24. At this time, the positioning claws 35 and 36 may be in any positional relationship.

Therefore, the above-mentioned tool change function 21 is that even if the machine does not have a main shaft 220 rotation foot position stop function, it is possible to automatically change tools by making use of the conventional quick chain saw function. be.

<Effects of the Invention> The automatic tool changing socket of the present invention has a mechanism added to the socket body and the tool sleeve to match the rotational center positions of the socket body and the tool sleeve, so that the structure of the automatic tool changing device can be improved. It can be easily done and
Even if the processing machine does not have a function to stop the spindle rotation at a fixed position, it is possible to automatically change tools. As a result, it becomes possible to reduce manufacturing costs by increasing the efficiency of processing machines.

[Brief explanation of drawings]

Fig. 1.2 shows an automatic tool changing socket according to an embodiment of the invention, Fig. sg1 is a longitudinal sectional view of the tool sleeve before it is chucked into the socket body, and Fig. 2
The figure is a NE sectional view of the tool sleeve in a state where the tool sleeve is chucked to the socket body, and FIG. 3 is a vertical sectional view of the conventional tool exchange socket in the next state after the tool sleeve is chucked to the socket body. In the drawings, 24 is a socket body, 25 is a clamp collar, 30 is a compression spring, 31 and 32 are steel balls, 33 is a tool sleeve, 33b is a steel ball holding groove, and 35 and 36 are positioning claws. Figure 3

Claims (1)

[Claims] A part of the socket body may protrude into the tool sleeve fitting part of the socket body which is fitted into the tool mounting hole of the main shaft of the processing machine and into which the tool sleeve holding the tool is fitted, and when the tool sleeve is fitted into the socket body. The socket body is provided with a steel ball that can engage with a locking hole drilled in the outer peripheral surface of the tool sleeve, and the socket includes a positioning member that abuts each other at a position where the steel ball and the locking hole engage. An automatic tool changing socket characterized in that it is provided in the main body and the tool sleeve.