JPS6044202A - Spindle-head indexing device - Google Patents

Abstract

PURPOSE:To simplify the linked operations of rotational indexing, positioning and fixing of a turret head by constructing the clutch mechanism betweeen a transmission shaft and a spindle so that it will be engaged/disengaged in accordance with the movement of the turret head in the axial direction. CONSTITUTION:When a turret head 1 is rotated by a prescribed angle, a hydraulic motor (not shown in the diagram) is stopped in accordance with the detection of an indexing detector 41a. Then when the pressurized oil which is pressing the turret head 1 upwards is released to regain the original state by a control valve (not shown in the diagram), the turret head 1 descends due to its own weight. At this point, accurate indexing and positioning are carried out by Karvic coupling 12 which is arranged in ring-form and fixed below the turret head 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a turret head indexing device comprising a plurality of spindle rotating parts disposed at intervals on the circumference. The present invention relates to a turret head indexing device that has an improved clutch mechanism that is provided between a support base that fits and supports a spindle rotating part, and a transmission shaft that transmits the rotation of a drive motor to the spindle.

Conventionally, a turret head carving machine has a turret head, which has a plurality of spindles, and a spindle rotating part in which the spindles are rotatably supported are provided on the same circumference at equal intervals, and the turret. Some devices include a support pace that rotatably supports the head, and a drive motor that drives the spindle via a transmission element. In this type of machine tool 1R, in addition to transmitting the rotation of the drive motor installed on the support pace side to the spindle of the turret head, the clutch mechanism (Vj''-) shift operation, rotation indexing operation of the turret head, Turret head positioning operation using dowel pins, etc.

It has functions such as fixing the O' turret head to the Oyohi base, and thereby enables the desired machining of the workpiece by rotation of tools fitted on a plurality of spindles.

Among these, the clutch machine tl! 'ti, in order to engage and disengage the pawl between the spindle and the transmission shaft, a slowing device or the like was used to perform the shift operation, but the structure of the clutch was In addition to being complicated, the conventional turret head indexing device has the disadvantage of being prone to failure.
In addition to the above-mentioned shift mechanism, other mechanisms for indexing must also be provided, and it is not easy to link with each mechanism, and furthermore, the driving system is different.
The shortcoming is that it takes time to operate, and the overall construction time becomes longer.

The present research was carried out to solve the above-mentioned drawbacks, and the purpose was to simplify the engagement of the clutch to create a contact structure, and to easily mechanically interlock the shifting operations. We have developed a turret head indexing mechanism that can perform reliable and quick turret head indexing operations even when used in mass-produced machine tools TT*, which eliminate failures and have quick takt times. It is necessary to provide.

The present invention provides a turret head having a spindle rotating section in which a plurality of spindles are rotatably supported, a support pace that supports the turret head so as to be rotatably indexable and movable in the axial direction, and a transmission element that connects the spindles. It is applied to a turret head indexing device of a turret head type machine tool equipped with a drive motor driven through the turret head type machine tool.

It has the following special features.

(a) As the center of the support base τ, its outer periphery,
The turret head is rotatably and axially movably mounted in a bag.

(h) As the transmission element, a transmission shaft for transmitting the rotational force from the drive motor to the spindle is provided so as to be connectable to the spindle.

FC) A clutch mechanism is provided at the connecting portion of the spindle and the transmission shaft to transmit rotation by removably connecting the two, and the clutch mechanism lti has a projection on one of the facing surfaces of the spindle and the transmission shaft. and a guide groove is provided on the other side to removably engage the protrusion member in the axial direction of the support pace.

(d) Provide the guide grooves on the outer periphery of the support pace and the inner periphery of the turret head (H) v pJ four sides,
When the clutch mechanism is disengaged due to the axial movement of the turret head.

A guide groove is provided which engages with the protruding member and guides the protruding member as the turret spatula F rotates.

The following are drawings regarding embodiments of the present invention. c Examine and explain.

11 is a cross-sectional view showing one embodiment of the turret head indexing mechanism of the present invention, and FIGS. 2 and 3 are longitudinal cross-sectional views thereof.

In these figures, Honkei turret head indexing machine +1
4 is a turret head 1 having f and u spindle rotating parts 2 provided at equal intervals around the circumference;

The support pace 3 rotatably supports the turret spatula 1?1, and the spin! This is a turret head type machine tool (applied to the Kai) with a driving mechanism 6 that drives the spindle of the pulse transmission section 2 via a transmission element.

The turret head 1 has a substantially hexagonal shape.

Six spindle rotating parts 2 are arranged at equal intervals of 60 degrees. Further, the turret head 1 is mounted so as to be rotatable around the circumference of the support base 3 and movable in the axial direction of the support base 3.

The rotation of the turret head 1 is as shown in FIG.
a rotating shaft 42 connected to a hydraulic motor 41;
The bevel tooth ■43 connected to the tip of the canopy 1゛41 ton 43
and a bevel gear 44 that meshes with.

5 bevel teeth 1X44 and coaxial K gV7 keyed pinion 45
and the small gear 45 provided at the bottom of the turret head 1.
This is done by a rotating mechanism consisting of a large pawl 46 that meshes with the large pawl 46. Bevel gears 43, 44. Small pawl 45 and large pawl 46, one rotation part of hydraulic motor 41, turret head 1
The gear ratio is set so that the gear rotates by 1/n.

Here, n is the number of spindle rotations 1''it+2 disposed in the turret head 1, and is μ6 in this embodiment.

It's a trench, axial movement of turret head 1 1-1.

This is done by operating the piston 11 in the turret head 1 by introducing oil under pressure from a hydraulic pump (not shown) through the flow path 5.

The support base 37i and the part to which the turret head 1 is attached are formed in a cylindrical shape, and the inside 1'l:.

Drive 4 with a transmission shaft 62.64.66 in its diametrical direction
@ 6 is provided on the outer periphery, and guide grooves 31, 32, and 33, which will be described later, are provided.

The drive motor 61, a transmission shaft 62 connected to and driven by the drive motor 61,
The intermediate side +64 is rotationally driven by the transmission shaft 62 via gears 63 and 65, and is rotated u/l by the intermediate shaft 64 via gears 65 and 67, so that the spin P pull rotating portion 2 The transmission shaft 66 rotates the spindle 21 provided in the transmission shaft 66. This transmission shaft 66'ri,
It is provided so as to be freely connectable to the spindle 21, which will be described later.

As described above, the spindle 21U is provided within each spindle rotating section 2 with its axis oriented radially, and is rotatably supported by one bale of bearings 22. A cutting tool 1, such as a drill, is attached to the outer end of the spindle 21. Further, a clutch mechanism 7 is provided between the inner end) jl (and the transmission shaft 66) to connect the two.

As shown in FIGS. 4 to 6, the clutch mechanism 7 has a key 7 attached to the peripheral edge of the opposing surface of the transmission shaft 66 of the spindle 21.
1 protruding from the spindle 21 of the transmission shaft 66.
A support base 3 is attached to the part corresponding to the key 71 on the opposing surface.
a key groove 72 that removably engages with the key 71 in the axial direction of the key 71;
It is configured by providing. This clutch mechanism 7 is.

Attachment/detachment by moving the turret head 1 in the axial direction.

Fig. 4 of this embodiment shows a clutch connected state in which the key 71 and the keyway 72 are engaged, and in Fig. 5, the key 71 and the keyway 72 are disengaged due to the upward movement of the turret head l. , indicates the clutch is disengaged. In addition, in Fig. 4 and @Fig. 5, the circle indicated by an imaginary line and the 0 inside the circle indicate the spindle 21 side, and the circle indicated by a solid line and the part inside the circle indicate the end of the transmission shaft 66. Show that something is true. Further, the solid lines outside one circle are the guide grooves 31, 32, and 33 of the support base 3.

These guide grooves 31, 32, 331-1. As mentioned above, the position Vi provided on the outer periphery of the support base 3 engages with the key 21 and rotates the turret spatula 1510 times when the clutch mechanism (j'f47) is disengaged. The guide surfaces 31, 32, and 331ri are provided continuously around the entire circumference of the support base 3, and as shown in FIG. l
A key τ holder 34 is provided which engages with the key 21 every /6 rotations. One of these key defects 34 is present at the lI411 end of the wide transmission shaft 66, and this becomes a key groove 72 constituting the clutch mechanism 7.

These keyways 34 transmit ti! III 66 so as to engage with the key 71 of the spindle 21.

The guide grooves 31 and 33 are provided corresponding to the two keys 71 and 71, while the guide groove 32 is.

The keys 71, 71 and IG are attached to the end face of the spindle 21.
The locking protrusion 73 is provided to guide the locking protrusion 73 protruding from the cross section. By providing this locking protrusion 73, the spindle 21 of the turret head 1 is prevented from collapsing while the turret is being ejected, thereby preventing fluctuation of the spindle rotating portion 2 and allowing smooth indexing. Composed! I'm here.

Next, the operation of the turret head indexing device of the present invention, which is constructed as described above, will be explained with reference to the above-mentioned figures.

First, it is assumed that one cutting tool (not shown) is attached to the spindle rotating part 2, and one of the cutting tools is now JJ.
Work D 1: Assume that the work is being actually manufactured. At this time, the rotation of the drive motor 61 is transmitted in the order of transmission shaft 62 → intermediate shaft 64 → transmission shaft 65 → clutch machine (W7 → spindle 21). , rotate the cutting tool.

Next, the machining work using the cutting tool is completed.

Replace the cutting tool. First, the drive motor 61 is stopped, and at this time, the transmission shaft 66 is stopped at a specific phase in order to enable the clutch machine (9''a7) to operate. A phase detection device 8 is provided on the main shaft 62, and a signal from the phase detection device 8 is used to stop the drive motor 61 in an optimum phase state.A brake can also be used for this stopping.

The above 1i'l phase (disaster'sr) device 81ri, an appropriate marker 82, and a detection element 81 for detecting it constitute 11η.

For example, there are magnets, reed switches, reflectors and photoelectric detection elements, etc.

The drive motor 61 stops, and the transmission shaft 66 shifts to a predetermined phase (a+
When it stops in the state shown in Fig. 4), pressurized oil is introduced into the flow path 5 by using a substitute operating valve of the hydraulic system (not shown in Fig. 5), and the turret head 1 is moved in the axial direction (upward) by the movement of the piston 11. Press and ridge. As a result, the clutch mechanism 7 allows the key 71 to move out of the keyway 72 and the guide surface 3 of the support base 3.
1, stops at the position that matches :33. (The state shown in Fig. 5) 3 Next, operate the operation valve to drive the hydraulic motor 41, transmit the rotation of the hydraulic motor 41 through a gear, and perform indexing! *
The turret head 1 at a ratio of 1:1/6 by the sensing device 41a.
Rotate. At this time.

The key 71 is guided along the guide groove 31.33,
Unfortunately, the key 73 is guided along the upper inner wall of the guide groove 32. If the rotation of the hydraulic motor 41 is stopped after one rotation, the transmission shaft 66 will be transferred to the processing module next to the processing module that was working directly. However, by setting the synchronization angle of the hydraulic motor 41 in advance, it is possible to determine the length of any (7) cutting tool by -1m.

When the turret head 1 has rotated by a predetermined angle, the indexing device 541 a's indexing device 541a (by the upper ml hydraulic motor 41
When the turret head 1 is returned to the state of pressurized oil held by the upper blade by the operation valve (not shown), the turret head 1 is lowered by the 1μ white table. By this, den'yM 'till 6 (i and x4 Li
The key 71 of the spindle 21 of the IF transfer section 2 engages with the keyway 72 (!: The spindle 21 and the transmission shaft 66 are connected. At this time, the turret head 1 is accurately indexed and positioned by a curvic coupling 12 provided with a ring-shaped groove and fixed with a screw t'.

Sunbuko, turret head 1 rise 1 (, 〒, Koyamatun 4
5, the large gear 46 slides but does not lose its meshing.

Thereafter, perform the υ1j operation from the Jυ-L tool ζ, and replace the cutting tool twice by the above operation again. OL Tsuteko T Shirari Motion 1 ``μ, j-be can force White 1 to take control. In the case of 4z Jiaki, clutch machine 1.'
47 soft motions and turret heno l? Rotation of J: Ko1
” Because it is possible to perform it in conjunction with the release and movement.

It is compact with a one-center lip configuration, and the cutting tool can be replaced in a short time (if the example is 4) j+2.

In the above embodiment, when the turret lever is raised, the clutch machine 1. - Although the configuration is such that the engagement of the turret head 17 is disengaged from the outside t'L, it is also possible to adopt a configuration in which the turret head 1 is lowered and the engagement is disengaged. , Also, in the above real MM 1yll,
71 keys are provided on the spindle 21 side.

A keyway 72 and guide grooves 31 , 32 , 33 are provided on the side of the transmission shaft 66 and the support base 3;
A key 71 is provided on the 6 side, and a key groove 72 is provided on the spindle 21 and the spindle head IIIll.
, 32 , 33 i may be provided.

First, in the real jiu row, l″i hexagonal turret head FVi
1 shows an indexing device that accommodates the rotating part of a 6-way spindle.
We will also discuss how to use the S-ru rotating part as a single unit.

As explained above, the present invention VI has a 41-point configuration in which the turret head is rotatably and movably moved in the axial direction on the support base, and the clutch line of the transmission shaft and spindle can be attached and detached by moving the turret head in the axial direction. This simplifies the structure and makes the shift operation easier, making it easier to link the clutch shift operation with the rotation indexing, positioning, and fixing operations of the turret head when changing cutting tools. It is possible to change the machining cutting tool continuously in a short time.

Moreover, it has the effect of being reliable with few failures.

In addition, it is possible to perform a reliable and quick indexing operation of the turret head even when used in a single cedar machining process where a quick tact is required. It is a vertical cross-sectional front view showing an example of a song.The present invention described above-
The parts that are basically circuit configurations have the same reference numerals as those in the embodiment. A ring part rotatably attached with a snap ring 91 in the support base 3 that supports the turret head 1 in a rotatable circumference, 92 pieces clutch machine + 74
7). When the turret head starts rotating, the spindle 21 is aligned with the piston 11.
I like smooth indexing operation with no wobbling and rising. After detecting the constant M phase of the spindle 21 by the vinegar phase detection device 8, press the key 71.7 provided at the IJ end of the spindle 210 as shown in FIG.
1 is F41J at the same place as the index position on the link member 92.
It is locked at a position where it can engage with a plurality of grooves 93 provided therein.

Next, the rotational drive and indexing of the hydraulic motor 41 marked D &
At the time of cutting out and indexing by Tochisenran, the keys 71.711. /
) One engages with the lock 3, and the other key 71μ transmission shaft 66
From the keyway 72 provided at the sloped end of
L. Therefore, the spindle 21'/'i can be indexed with one book without any wobbling! The transfer to the ring member 92 is then completed. Index 1: “It’s time.

Since the ring member 92' rotates at a constant angle following the spindle 21, the spindle 21Vi maintains a fixed position.
・There is up to. Therefore, even if the clutch mechanism sound of this embodiment is used, the same effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the turret head indexing mechanism, FIGS. 2 and 3 are longitudinal cross-sectional views thereof,
Figures 4 and 5 are explanatory diagrams showing the structure and cross-section of the clutch 1 mechanism of the present invention; Figure 6 is a plan view of its main parts; Figure 7 is a diagram showing the configuration of the clutch 1 mechanism provided on the support base. A schematic exploded view showing the entire structure of the guide groove, FIG. 8 is another embodiment 1 of the present invention.
1, No. 97 and No. 101 are explanatory diagrams showing the structure and packaging of a clutch 111' that is used in the construction of another embodiment of the present invention. 1°・°Spin l-'le head 2...Spindle 1
1. Attached part 21...Spindle 22...Bearing 3...Support base 31. 2.33...Guide groove 41...Hydraulic motor 43,44...Umbrella 6 stop 45.
...Small pawl 46...Large gear 5...Flow path 6...Driver 1N 61...Main motor 62...Ball shaft 66...Transmission I! II7... Clutch Shunkai 71... Sento Kikawa Hitachi IN Machine Co., Ltd. Agent Ri P Filled Earth Ren Aihara Shidai 4 Figure 7 Figure 5 Figure 6 [Zl Figure 9 Figure 10 Figure 19-

Claims (1)

[Scope of Claims] A spindle head provided with a spindle rotation part that rotatably supports a spindle, and a support base that rotatably supports the spindle head. A machine tool equipped with a drive motor that drives the spindle of the spindle rotating section via a transmission element,
A spindle head indexing device characterized in that it has the following requirements. [a] The spindle head is rotatably and axially movably mounted on the outer peripheral guide portion of the support base. [h) On the support base, as the transmission element. A transmission shaft for transmitting rotational force from the electric motor to the spindle is provided on the shaft connected to the spindle. (c) A clutch mechanism is provided at the connecting portion of the spindle and the transmission shaft to transmit rotation by removably connecting the two, and the clutch mechanism is attached to one of the opposing surfaces of the spindle and the transmission shaft. A drive transmission protrusion member and a spindle head rotation guide protrusion member are provided, and the other protrusion member is provided with an engagement groove that removably engages with each protrusion member in the direction of the central axis of the spindle head. . (d) A groove for transmitting spindle drive, which disengages the clutch mechanism as the spindle head moves in the direction of the central axis, on the outer periphery of the support base facing the rotating surface of the spindle head; A guide member is provided to guide the nuclear apex member as it rotates.