JPS6040252Y2 - Movable quill receiver for boring machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a movable tile support for a boring machine, and in particular,
This invention relates to a device for a movable tile holder for a boring machine, in which a tile holder for supporting a wheel to which a tool is attached is movable using the movement of a unit when changing the tile holder.

In general, deep hole boring machines rotate the tile on which the cutting tool is attached, insert the tile through the supporter to center it, and move it in the axial direction, thereby supporting the tile during cutting. I am trying to do polling.

Axial movement with respect to the tile is performed by sliding the spindle unit along the slide pace.

In such a deep hole boring machine, when replacing a tile, it is necessary to retreat the spindle unit and pull out the tip of the tile from the supporter.

However, since the quill itself is a long bar and the centering of the tile is performed by a support, the tile mounting part of the spindle unit has a floating structure with respect to the shaft head, making it possible to transmit only the drive. ing.

Therefore, the tile that has come off the supporter due to the retreat of the spindle unit hangs down, and cannot be inserted into the hole in the supporter when the spindle unit moves forward.

For this reason, conventionally, a tile support for supporting the tile when the spindle unit is retracted is installed so as to be located between the spindle unit and the supporter.

Conventionally, three types of structures have been adopted for the above-mentioned tile holder structure.

That is, the first is a fixed tile support that is set in a fixed state so as to support the tile at all times, and the second is a fixed tile support that does not perform quill support during cutting, but is moved to a position where quill support is possible while the spindle is retracting. A movable bridge is used to obtain the tile support, and the movement of the tile receiver is performed by a separately provided actuator.

Furthermore, thirdly, in the movable tile using the actuator, the actuator is not provided and the movable tile is simply movable,
A structure is adopted in which the tile receiver is operated manually.

However, all of the above conventional tile receivers have problems and cannot perform efficient work.

That is, in the first fixed tile receiver, the forward movement of the spindle unit is restricted by the tile receiver, and therefore the tile has to be made longer, making outer diameter polishing extremely difficult in terms of precision due to the longer tile length. .

Furthermore, in a movable tile holder using an actuator, when retracting the spindle unit, it is necessary to stop the unit once and then drive the tile holder with the actuator, and an electric control means must be provided.
This is a significant disadvantage in terms of equipment costs.

Furthermore, in the third manual movable tile receiver, because it is done manually, work efficiency is poor and the unit must be stopped.
Moreover, it has the disadvantage of being dangerous during work.

The present invention focuses on the problems of the conventional tile support, and utilizes the forward and backward movement of the spindle unit to automatically support tiles only when necessary, without providing any driving means, and when not necessary. It is an object of the present invention to provide a device for a movable tile support for a boring machine which is moved to a position away from the tiles.

In order to achieve the above object, the tile receiver for a boring machine according to the present invention is provided with a spindle unit having first and second dogs, and a cam follower that is rotatably connected to the first and second dogs, respectively. and an interlocking arm that is rotated by switching the dog that is in rolling contact with the cam follower as the spindle unit moves, and is connected to the interlocking arm via a link mechanism, and
The tile support, which is disposed between the spindle unit and the supporter and is rotated by the rotation of the interlocking arm to support the tile, is constructed by rotatably attaching parts, and utilizes the movement of the spindle unit. The tile support is designed to operate automatically.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a movable tile support for a boring machine according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a side view of a boring machine equipped with a movable tile support device according to this embodiment.

As shown in this figure, the boring machine includes a slide base 12 fixed on a base 10, and a spindle unit 14 that is movable in the front-rear direction (left-right direction in the figure) along the slide base 12. have.

The spindle unit 14 is the slide base 12 described above.
including a slide table 16 slidably fitted to the
It consists of a drive section installed on this slide table 16 and giving rotational motion to the cutting tool.

This drive unit has a shaft head 18 installed on the front end (left end in the figure) side of the slide table 16, and
The motor 22 is installed at the rear of the shaft head 8 and is connected to the shaft head 18 by a transmission means 20.

Therefore, the driving force of the motor 22 is transmitted to the shaft head 18, and the quill attachment portion 24 provided on the distal end side of the shaft head 18 is rotated by this driving force.

The quill attachment part 24 has a floating structure with respect to the shaft head 18 and is configured so that only rotational force can be transmitted, and is attached to the shaft head 18 in a state that further protrudes from the front end surface of the slide table 16. There is.

One end of a long quill 26 on which a cutting tool is mounted is attached to the quill attachment portion 24 as described above.

The quill 26 is arranged parallel to the movement line of the spindle unit 14, and the other end of the quill 26 is inserted into a supporter 30 installed on the workbench 28 in the forward direction of the spindle unit 14.

The boring work is performed further forward of the supporter 30 (left end side in the figure), and the quill 26 is driven by the motor 22.
This is done by rotating the slide table 16 and moving the slide table 16 forward by a driving means (not shown).

In this way, in a boring machine, the quill 26 is supported by the supporter 30 during cutting, but when the work is finished or the spindle unit 14 is moved back to replace the tile 26, the quill 26 comes off from the supporter 30. Therefore, the movable tile receiver is provided with a device 32.

That is, a first dog 34 is provided on the side wall of the slide table 16 of the spindle unit 14 at a front position thereof and extends laterally (see FIG. 3).

This first dog 34 is made of an L-shaped cross-sectional member, and is integrally attached to the slide table 16 so that a hanging surface is formed at the projecting end, and its length is approximately equal to the length of the shaft head 18. It is set.

Further, a second dog 36 made of an L-shaped cross-sectional member is attached to the slide table 16 at a rear position of the first dog 34.

The second dog 36 is set to have a longer projecting distance than the first dog 34, and has a length that is continuous from the rear end position of the first dog 34 to the rear end of the slide table 16.

Further, sloped portions 38 are formed at the rear end of the first dog 34 and the front end of the second dog 36, respectively.
In FIG. 1), an inverted V-shaped notch is defined between the two.

Slide base 12 located below the slide table 16 having the eleventh second dog 34, 36 as described above.
A bracket 40 is attached to the side wall surface of.

This bracket 40 has its distal end facing directly below the first and second dogs 34, 36, and is formed into a forked shape.

An interlocking arm 44 is pivotally attached to the forked tip portion through a fulcrum pin 42, and is rotatably attached around the fulcrum pin 42.

Further, on one end side of the interlocking arm 44, a first cam follower 46 that can be connected to the lower end of the hanging portion of the first dog 34, and a first cam follower 46 that can be connected to the lower end of the hanging portion of the second dog 36 are provided on the front and back surfaces of the interlocking arm 44, respectively. A second cam follower 48 is attached.

In the interlocking arm 44 having the first and second cam followers 46 and 48, the first cam follower 46 is in rolling contact with the first dog 34, and the second cam follower is connected to the second dog 36 from below.
Setting conditions for the cam followers 46 and 48 are set such that the cam followers 48 rotate by a certain angle around the fulcrum pin 42 when the cam followers 48 shift to a state where they are in rolling contact.

On the other hand, a knuckle 50 is pivotally attached to the other end of the interlocking arm 44, and one end of a connecting rod 52 extending toward the front end of the slide base 12 is connected to the knuckle 50.

On the other hand, a bracket 56 is attached to the front end surface of the slide base 12 and includes a sleeve 54 that is horizontally suspended in a direction perpendicular to the moving direction of the spindle unit 14 at a position above the slide base 12 (see FIG. 2). ).

An arm shaft 58 is rotatably fitted into the sleeve 54, and the center of the sleeve 54 is cut out so that the center portion of the arm shaft 58 is exposed to the outside.

A tile support portion 60 is fixedly attached to the exposed portion of the arm shaft 58, located directly below the quill 26.

The quill receiver part 60 is disposed between the supporter 30 and the spindle unit 14, and is rotatable with respect to the sleeve 54 together with the arm shaft 58, but when the quill receiver part 60 is erected, The length is selected such that the quill 26 can be supported at its tip.

Further, a groove portion 62 is formed at the tip of the tile holder portion 60 so that the quill 26 can be held therein.

The arm shaft 58 has one end protruding from the end of the sleeve 54, and the interlocking arm 6 is attached to the protruding end.
4 is fixedly attached.

The interlocking arm 64 is further pivoted to a knuckle 66 connected to the extended end of the connecting rod 52.

Therefore, the interlocking arm 44, which is given a rotational movement by the first and second dogs 34, 36, has a knuckle 50,
Connecting rod 52, knuckle 66, and interlocking arm 6
By rotating the arm shaft 58 through the link mechanism consisting of 4, it becomes possible to selectively rotate the tile support section 60 to an upright position or an inverted position.

The movable quill receiver for a boring machine configured in this manner is operated by a spindle unit 14 by a drive means (not shown).
When the tile moves forward or backward, the tile receiver section 60 is activated in accordance with the movement.

That is, in the position shown in FIG. 1, the first cam follower 46 is in rolling contact with the first dog 34, and the quill receiver part 60 supports the quill 26.

When the spindle unit 14 is moved forward from this state, the rolling contact state of the first follower 46 with respect to the first dog 34 is released, and the tip of the second dog 36 continues to press the second follower 48 while both of them are rolled. becomes connected.

By switching between the dogs 34 and 36, the interlocking arm 44 is rotated counterclockwise in FIG.

This rotation of the interlocking arm 44 is similarly caused by the arm shaft 58 being rotated counterclockwise by a link mechanism consisting of a connecting rod 52 and the like.

By transmitting this rotation, the quill receiver is moved to the portion 60.
is rotated approximately 90 degrees, and the supported state of the quill 26 is released.

On the other hand, when the tile holder is moved backward from the forward position of the spindle unit 14 where the portion 60 is inverted, the contact follower is switched from the second dog 36 to the first dog 34, so the tile holder is reversely moved. The portion 60 is rotated clockwise and stands up, making it possible to support the tile 26.

According to such a configuration, the operation of the tile receiver portion 60 is as follows.
This is done by utilizing the forward and backward movement of the spindle unit 14 of the boring machine.

Therefore, without any special driving source, the quill receiver automatically raises the quill 260 only when necessary.
support can be provided.

This eliminates the need for actuators and electrical controls, making it possible to significantly reduce equipment costs.

In addition, since the tile receiver has a movable portion 60, the quill 26
It becomes possible to shorten the length of the quill 26, making it easier to manufacture the quill 26, and improving the accuracy of boring.

Further, since the spindle unit 14 can be continuously operated without stopping the unit 14 during its retraction, the time required for replacing the quill 26 can be shortened and the work efficiency can be improved.

In the above embodiment, the installation position of the interlocking arm 44 having the follower 46° 48 is at the spindle unit 1.
In short, it is sufficient that the dogs 34 and 36 are set at a position that imparts rotational movement to the interlocking arm 44.

Further, the brackets 40 and 56 that support the interlocking arm 44 and the quill receiver 60 may be attached to the base 10 or other fixed member instead of the slide base 12.

As explained above, the movable quill receiver for a boring machine according to the present invention does not require any special power source because the movement of the tile receiver can be performed using the movement of the spindle unit. It has a simple structure and can automatically perform efficient work.

[Brief explanation of the drawing]

Fig. 1 is a side view of a boring machine equipped with a movable tile receiver according to this embodiment, Fig. 2 is a cross-sectional view taken along the line ■-■ of Fig. 1, and Fig. 3 is a cross-sectional view taken along the line ■-■ of Fig. 1. It is. 12...Slide base, 14...Spindle unit, 16...Slide table, 24...Quill mounting portion, 30...Supporter, 32...The movable quill receiver is a device, 34.
...1st dog, 36...2nd dog,
44... Interlocking arm, 46... First follower 48... Second follower 52...
...Connecting rod, 58...Arm shaft, 60...Quill receiver is part.

Claims (1)

[Scope of utility model registration request] a first dock provided on the front side of the spindle unit; a second dock provided at the rear of the first dock;
an interlocking arm that has a cam follower that can be connected to each of the 11th and second docks and is rotated when the dock that is connected to the cam follower is switched as the spindle unit moves; A tile support is connected via a link mechanism and is disposed between the spindle unit and a supporter through which the tile attached to the spindle unit is inserted, and is rotatably attached to support the tile in an upright position. A movable tile support for a boring machine is a device characterized by comprising a part and a part.