JPS608905Y2 - Tool magazine indexing device for machine tools - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tool magazine indexing device installed in a machine tool such as a multi-axis drill tap dedicated machine,
The object thereof is to provide a tool magazine device for a machine tool that can reliably perform rotational indexing of a tool magazine holding tools.

Hereinafter, the present invention will be explained with reference to the drawings.

7 in the drawing is a bed, and slideway 1 of bed 7
1 is slidably provided with a magazine base 8.

The magazine base 8 is moved by rotation of a ball screw 8a.

Magazine base 8 has tool magazine 1 at 1 b.
e 1 ct 2a? 2bt 2c”lay
A tool magazine mechanism in which 4b and 4c are mounted in tandem is provided.

Further, the magazine base 8 is provided with a rotation drive mechanism A serving as a tool magazine mechanism.

The tool magazine mechanism is equipped with a dog body 9, and the LSW
Each index position (sixth equal part) is detected by IQ.

A cylinder 6 is fixed to the column 16.

Further, a main shaft slide 15 is provided on the column 16 so as to be movable up and down, and the main shaft slide 15 has main shafts 5a, 5b, 5
c and 5d are provided so as to be slidable left and right.

The rotational drive mechanism A includes a transmission mechanism E and an indexing drive mechanism B.

The transmission mechanism E includes a rod 27 that is slidably provided on the plate 25 of the magazine base 8, and a spring seat 27a is fixed to the shaft end of the rod 27. A spring 28 is interposed between the bearing 27b and the provided bearing 27b.

A rack 31 is attached to the rod 27.

Further, the plate 25 is provided with a support member 25a, a shaft 29 is rotatably provided on the support member 25a via a bearing 25b, and a pinion 30' is fixed to the shaft 29'. It meshes with the rack 31.

Further, a pinion 44 is fixed to the lower part of the shaft 29, and the pinion 44 is slidably provided on a rack 12a of the rod 12, and a holder 12b fixed to the magazine base 8. The spring 4 is inserted between the spring seat 45a and the spring box 45b fixed to the holder 12b.
5 is a provision.

The one shown in Figures 10 and 11 is the indexing drive mechanism B.
The indexing drive mechanism B includes a shaft 22 supported via a bearing 22'a on a support portion of a plate 25' connected to the plate 25. A second bar 30 is rotatably provided, and the first bar 19 and the second bar 30 are connected at their ends by a base member 85, and a long hole 23 is formed in the lower end of the base member 85. A pin 24 implanted in the rod 27 is slidably inserted into the elongated hole 23.

A first claw body 20 is swingably attached to the bar 19 by a pin 22a, and the movement of the first claw body 20 is restricted by contacting a stopper 39a that is urged downward by a spring 39.

A first ratchet 18 is fixed to the shaft 22.

This first ratchet 18 is divided into six equal parts, and the first claw portions 46 are provided at six locations.

The first claw body 20 is in contact with the first bite portion 46 .

Further, a holder 26 is fixed to the plate 25', and a second claw body 21 is swingably attached to the holder 26 with a pin 21a, and the second claw body 21 is urged inward by a spring 40. The end portion whose movement is regulated by contacting the stopper 40a is in contact with the end portion 46 of the first ratchet 18.

A second ratchet 29 is fixed to the shaft 22, and a third pawl 32 of a second bar 30 abuts against a bolt 29b of a second toothed portion 29a of the second ratchet 29.

The movement of the third claw body 32 is restricted by a stopper 41a that is urged downward by a spring 41.

A shaft portion 29c is formed on the second ratchet 29, and a plate 31' is attached to this shaft portion 29c, and the plate 31' is connected by a pin 38a to a block 38 fixed to the plate 25'. .

Further, a block 34 is fixedly attached to the second bar 30.

Further, a holder 42a is fixed to the plate 25'.
A fourth pawl body 33 is provided on the holder 42a so as to be swingable by a pin 33a, and the movement of the fourth pawl body 33 is regulated by colliding with a stopper 42b that is biased inwardly by a spring 42. .

The tool magazine mechanism includes a housing 61 fixed to the shaft 22, as shown in FIGS. 14 and 15.

A shaft 52 is disposed within the housing 61, and the shaft 52 is inserted into the support portion of the shaft 22 via a bearing.

The housing 61 is hexahedral, and has directions a, b, c,
a, et f, respectively, have mounting portions 64a to 64f of the tool fingers 63.

A tool finger 63 is fixed in the same phase to the mounting portion 64a on the a side and the mounting portion 64d on the d side in the same phase.
Tool fingers 63 are fixed in the same phase to the mounting portion 64e on the surface, and tool fingers 63 are fixed at the same position on the mounting portion 64c on the C surface and the mounting portion 64f on the opposite surface, that is, the f surface. .

Therefore, the housing 61 has two tool fingers 63 at the positions of lines I, II, and III for the spindle 5a.
A total of 6 pieces of each book will be worn.

The same applies to the main shafts 5b, 5c, and 5d.

The tool finger 63 is shown in FIGS. 16, 17 and 19.
As shown in the figure, a fork 65 is attached to the finger body 66 with a pin 67, and the fork 65 is pushed by a spring 68 so that the fork 65 collides with a stopper 69 provided on the finger body 66.

The tool finger 63 is connected to the housing 61 by the lock pin 70.
It is attached to attachment parts 64a-64f of.

That is, the end of the lock pin 70 is slidably inserted into the mounting hole 71 of the mounting portions 64a to 64f of the housing 61, and the protrusion 72 at the inner end of the lock pin 70 is inserted into the notch 74 provided in the shaft 52. It fits into the

Further, a spring seat 75 is fitted into the mounting hole 71, and a spring 77 is interposed between the spring seat 75 and the spring seat 76 of the lock pin 70.

The lock pin 70 passes through a mounting hole 78 in the tool finger 63.

This lock pin 70 has a cam 79 as shown in FIG.
is formed, and the end of the fork 65 is in contact with the cam 79.

A handle 80 is attached to the lock pin 70.

Next, the operation will be explained.

When changing tools, the tool magazine mechanism moves and stops at the tool changing position.

The main shaft slide 15 is moved downward by the motor 57.

Next, when the tool magazine mechanism moves to the right, the main shaft 5a
The tool 81 attached to ~5d is the tool finger 63
clipped to.

At this time, the tool 81 is unlocked in the chuck 82 by pushing the holder 83 upward by the tapered part 84 of the tool finger 63, and then the main M
5a to 5b are raised by the rise of the main shaft slide 15, and the tool 81 is delivered to the tool finger 63.

At this time, the fork 65 can be opened and closed, and the tool 81 is completely gripped by the fork 65.

When the tool magazine mechanism rotates and indexes and the necessary tool 81 comes directly under the main shaft 5a as shown in FIG.
a descends and the shank portion 81a of the tool 81 is attached to the chuck 82.
is fully inserted.

In this state, the tool magazine mechanism moves to the left, and the fork 65 comes off the holder 81b of the tool 81 and the tool 81 is completely removed.
is attached to the main shaft 5a.

Such a tool exchange operation is performed simultaneously on the spindles 5a to 5e, and if the same tool 81 is placed at the same position in the tool magazine mechanism, the same tool 81
is to be exchanged.

To explain the indexing operation, when the tool magazine mechanism slides forward and is positioned at the exchange position, the cylinder 6 is activated and the cylinder rod 17 bushes the rod 12.

Referring to FIG. 5, when the rod 12 is bushed, the shaft 29' rotates due to the rack-pinion relationship, causing the rod 27 to move to the right.

When the rod 27 moves to the right, the first bar 19 rotates counterclockwise due to the pin connection.

Next, when the cylinder 6 is reversely operated, the rod 12 is moved forward by the spring 45, and the rod 27 is moved forward by the spring 45.
8 to the left, and the first bar 19 rotates clockwise.

Referring to FIG. 10, when the first bar 19 rotates clockwise, the first pawl body 20 engages with the first pawl 46 of the first ratchet 18, so the first ratchet 18 also rotates clockwise. As it rotates in the circumferential direction, the shaft 22 also rotates, and rotation indexing of the tool magazine mechanism is performed.

Next, when the first bar 19 rotates counterclockwise, the second pawl body 21 engages with the bite part of the first ratchet 18, and the first bar 19 rotates counterclockwise.
The ratchet 18 remains stopped.

When the first bar 19 rotates clockwise or counterclockwise,
The first and second pawl bodies 20, 21 perform a rotational ratcheting action via a pin by a spring 39,40.

Therefore, the structure and operation shown in FIG. 11 prevent the tool magazine from rotating and reversing.

Referring to FIG. 11, when the rod 27 moves to the left, the second bar 30 and the second ratchet 29 both rotate clockwise, and when the rod 27 moves to the left end, the fourth claw body 33 is spring-loaded. 42, the claw portion of the second ratchet 29 comes into contact with the fourth pawl 33, thereby restricting clockwise rotation.

When the rod 27 moves to the right, the third pawl 32 engages with the toothed portion of the second ratchet 29 to restrict clockwise rotation and index its own rotation.

A block 34 is attached to the second bar 30 to prevent the second claw 29b of the second ratchet 29 from interfering with the fourth pawl 33 when the second bar 30 rotates clockwise. The plate 31 is the second one.
This is to prevent interference between the second claw 29b of the second ratchet 29 and the third pawl 32 when the bar 30 rotates counterclockwise.

To add more information, the first claw body 20: For clockwise rotation drive (six-turn groove) Second claw body 21: For preventing free rotation in the counterclockwise direction and for positioning Third claw body 32: For A rotation index positioning Fourth claw body 33: For preventing free rotation in the clockwise direction.

The rotational drive is effected by the actuation of the cylinder 12, which is effected by the actuation force of the index positioning spring 28.

The present invention has been described in detail above, and includes a first bar 19 rotatably installed on the shaft 22 at both ends of a drum-shaped housing 81 having a plurality of tool fingers 63 for gripping a tool 81; The base member 85 is rotatably provided.
A second bar 30 is connected to the first bar 19 via a second bar 30, and a second bar 30 is fixed to the shaft 22 and divided into a plurality of equal parts, and a first bar 30 is connected to the first bar 19 through a second bar 30.
A first ratchet 18 having a toothed portion 46, and a second ratchet 29 which is fixed to the shaft 22 and divided into a plurality of equal parts, and has a second toothed portion 29 in the equal portions.
a second ratchet 29 having a second jaw portion 29b facing oppositely to the first ratchet portion 46; a first pawl body 20 that supports the shaft 22, and a second pawl body 2 that is provided on a support member that supports the shaft 22 and prevents the first ratchet 18 from reversing.
1 and the second ratchet 2 provided on the second bar 30.
9, a fourth pawl 33 provided on the support member to prevent the second ratchet 29 from reversing, and a second bar provided on the support member. 3
0 rotation, the third claw body 32 contacts the third claw body 32.
a plate 31' that lifts up the second bar 30, and a plate 31' that is provided on the second bar 30 and contacts the fourth claw body 33 when the second bar 30 rotates.
a block 34 that rotates the claw body 33; a rod 27 that is slidably provided on the support member and swingably connected to the base member 85; and a rod 27 that is provided on the support member.
7 in one direction; a cylinder 6 provided on the column side outside the tool magazine mechanism; Since the transmission mechanism E is provided to move the ratchets 19, 29 and the pawls 20, 21, 3
Rotary indexing and positioning can be performed by the combination of 2° and 33, and clockwise rotation of the tool magazine is performed by actuating the cylinder 6 and indexing positioning spring 28.
Since the tool magazine itself slides, the time setting at the slide origin position can be completed and this state can be maintained by the action of the spring 28.

With these features, rotational indexing can be performed reliably.

[Brief explanation of the drawing]

Fig. 1 is a front view of the machine tool, Fig. 2 is a view taken from the arrow direction in Fig. 1, Fig. 3 is a side view of the same, Fig. 4 is an enlarged view of the part in Fig. 1, Fig. 5 is A vertical cross-sectional view of the rotational drive mechanism, FIG.
7 is a sectional view taken along the line VI in FIG. 5, FIG. 8 is a sectional view taken along the line XX in FIG. 7,
9 is a longitudinal sectional view of the rotary indexing mechanism, FIG. 10 is a sectional view taken along line XX in FIG. 7, FIG. 11 is a sectional view taken along line XX in FIG. Figure 11 Cross-sectional view along line ■-■,
Fig. 13 is a sectional view of the Xm section in Fig. 10, Fig. 14 is a plan view of the housing of the tool magazine, Fig. 15 is a side view of the same, Fig. 16 is a plan view of the tool finger, and Fig. 17 is a side view of the same. , FIG. 18 is a side view of the tool magazine mechanism, FIG. 19 is a view taken from the X-ray in FIG. 18, and FIG. 20 is a perspective view of the lock pin. 6 is the cylinder, 18.29 is the ratchet, 22 is the shaft, 1
9.30 is a bar, 20, 21, 32, 33 are claw bodies, 34
is a block, 28 is a spring, and 27 is a rod.

Claims (1)

[Scope of utility model registration request] A first bar 19 is rotatably provided on a shaft 22 at both ends of a drum-shaped housing 61 that has a plurality of tool fingers 63 for gripping a tool 81, and a base member 85 is rotatably provided on the shaft 22. A second bar 30 is connected to the first bar 19 via a second bar 30, and a first ratchet 1B is fixed to the shaft 22 and is divided into a plurality of equal parts and has a first bite part 46 in the equal parts.
and a second ratchet 29 which is fixed to the shaft 22 and divided into a plurality of equal parts, and has a second toothed part 29b in the equal parts, and further has the second toothed part 29b oriented in the opposite direction to the first toothed part 46; A first pawl body 20 is provided on the first bar 19 and engages with the first pawl 46 of the first ratchet 18, and a first pawl body 20 is provided on the support member that supports the shaft 22 to prevent the first ratchet 18 from reversing. a second pawl body 21 for blocking, a third pawl body 32 that engages with the second bite portion 29b of the second ratchet 29 provided on the second bar 30, and a second pawl body 32 provided on the support member that engages with the second pawl 29b of the second ratchet 29.
a fourth pawl body 33 for preventing the reverse rotation of the second bar 30; a plate 31' provided on the support member to contact the third pawl body 32 and lift the third pawl body 32 when the second bar 30 rotates; A fourth claw body 33 provided on the second bar 30 when the second bar 30 rotates.
a block 34 that rotates this fourth claw body 33 in contact with;
a rod 27 that is slidably provided on the support member and swingably connected to the base member 85; a spring 28 that is provided on the support member that biases the rod 27 in one direction; and a tool magazine mechanism. Cylinder 6 installed on the outside column side
and a transmission mechanism E which is provided on a support member and receives power from the operation of a cylinder 6 to move the rod 27 against a spring 28.