JPS58181510A - Machine tool - Google Patents

Abstract

PURPOSE:To form a machine tool to small size and light weight and perform complicated machining from the various direction under the fixed condition of a work, by coaxially fitting many rotary shafts to operate rotative driving of a main spindle and its index turning further oscillatory rocking and longitudinal movement. CONSTITUTION:If a quill driving motor 13 operates to rotate a feed screw 14, a quill 12 and a ram 11 are moved shuttling further a main spindle driving shaft 24 is moved shuttling with a rocking transmission shaft 19. In this way, shuttling movement of a tool in the direction of an arrow head Z is performed. While a ram turning motor 44 rotates a ram driving shaft 41 to turn the ram 11 and perform index rotation of the tool. If a main spindle holder driving shaft 47 is rotated by a motor 54, a holder 16 performs oscillatory motion, and a main spindle 18 is rotated by a motor 35 to turn the tool and optionally moved by the other motor with a headstock 7, then complicated machining is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine tool that is highly versatile, lightweight, and compact, and in particular, is capable of handling workpieces with complex shapes from multiple directions by attaching a plurality of them to a suspension stand such as a column or horizontal girder. Suitable for processing at once.

In order to realize a rational production line in line with the diversification and compounding of products now and in the future, when processing integrated products with complex shapes, small and lightweight products are used to improve accessibility to the workpiece. Moreover, in consideration of versatility, it is necessary to use a machine tool equipped with a spindle for multi-axis control. However, if you want to maintain high rigidity and precision by adding functions such as back-and-forth movement, oscillation, and rotation to the main shaft in addition to drive rotation, and the ability to freely move the main shaft in a direction perpendicular to the shaft, it is impossible to maintain high rigidity and precision. The area around the main spindle becomes large, and it is often difficult to feed the main spindle to iK within the workpiece.

Based on this knowledge, the present invention is highly versatile, extremely small and lightweight, yet maintains high rigidity and high precision, and can be easily formed into columns, horizontal girders, etc., corresponding to each wrinkled surface of the workpiece. The purpose of the present invention is to provide a machine tool that can be installed on a machine and can perform machining from multiple directions at once depending on the number of machines installed.

In order to achieve this object, the present invention has a frame-shaped main body that is detachably attached to a suspension frame, a saddle that is supported in a reciprocating manner with respect to the main body, and a cylindrical headstock supported so as to be reciprocating in a direction perpendicular to the direction in which the saddle is reciprocated; a tile fitted and supported on a headstock; a cylindrical ram rotatably fitted and supported on the quill; and a cylindrical ram having a swing axis perpendicular to the longitudinal force of the ram. A main shaft holder in which a swing shaft is pivotally supported at the tip Km of the ram, a main shaft rotatably attached to the main shaft holder at right angles to the swing shaft, and a gear that connects the tip to the swing shaft. A cylindrical swing transmission shaft connected to the moving shaft and rotatably supported coaxially with the ram, and a tip portion connected to the main shaft via a gear protruding from the tip of the swing transmission shaft. and a main shaft drive shaft rotatably supported coaxially with the swing transmission shaft, and a main shaft drive shaft that is rotatably attached to the headstock and is slidably connected in the longitudinal direction. a rotation transmission shaft that transmits rotational force to the main shaft drive shaft;
a ram drive shaft that is slidably fitted to the ram in the longitudinal direction and rotatably supported by the headstock to transmit rotational force to the ram; and a ram drive shaft that is rotatably driven by the ram drive shaft. a cylindrical main shaft that is rotatably attached to a planetary gear that is fitted and supported by the ram drive shaft and meshes with an internal gear formed on the inner periphery of the ram drive shaft and a sun gear formed on the outer periphery of the swing transmission shaft; It consists of a holder drive shaft.

Hereinafter, a machine tool according to the present invention will be described in detail with reference to an embodiment shown in the drawings. The first example represents an overview of this example.
As shown in Figure 2 and Figure 3 showing the internal structure, there are columns (not shown) on the frame-shaped main body 2, horizontal digits, etc. A flange portion 1 is formed at any location on the suspension table so as to face the workpiece and can be attached. Main body 20
A frame-shaped saddle 3 is attached within the frame so as to be able to reciprocate (in the direction indicated by arrow X in the figure) along guide rails 4 provided on the inner wall of the main body 2. The saddle 3 is threadedly engaged with a feed screw 5 rotatably attached to the main body 2 along a guide rail 4, and is driven by a saddle sliding motor 6 connected to the feed screw 5 and fixed to the main body 2. Driven back and forth. Inside the saddle 30 frame, a cylindrical headstock 7 is attached to the inner wall of the saddle 3 in a direction perpendicular to the guide rail 4 (
Guide rail 8 provided along the direction indicated by arrow Y in the figure)
It is attached so that it can freely reciprocate through. This head stock 7 is threadedly engaged with a feed screw 9 attached to the saddle 3 along a guide rail 8.
A headstock drive motor 1°K connected to the saddle 3 and fixed to the saddle 3 is driven in a reciprocating manner. The headstock 7 has a cylindrical ram 11 that can be freely rotated (as indicated by arrow C in the figure).
A supporting quill 12 is fitted so as to be able to reciprocate in the direction perpendicular to the arrows X and Y (in the direction shown by arrow Z in the figure). This quill 1
2 is attached to the drive motor 13 fixed to the headstock 7.
It is threadedly engaged with a feed screw 14 that rotates at a rotation angle, and is driven reciprocally with respect to the headstock 7. A swing shaft 15 perpendicular to the direction of arrow Z is rotatably supported at the tip of the ram 11. A main shaft holder 16 is attached to the swing shaft 15, and a main shaft 18 to which a tool 17 is detachably attached to the tip of the main shaft holder 16 is attached to the swing shaft 15.
is installed at right angles to the That is, the main shaft 18 can swing a trout (in the direction shown by arrow A in the figure) with respect to the ram IIK by means of the swing shaft 15. A cylindrical swing transmission shaft 19 is rotatably supported coaxially with the ram 11 in the center of the ram 11, and a gear 20 formed at the tip of the swing transmission shaft 19 is Worm wheel 2 fixed to swing shaft 15 via gear 21 and a worm (not shown)
It meshes with 2. This swing transmission shaft 19 is connected to the rod 2
It rotatably supports a cylindrical main shaft drive shaft 24 having a hole 3 inserted therethrough. A gear 25 formed at the tip of the main shaft drive shaft 24 protruding from the tip of the swing transmission shaft 19 is a gear 26.
．． It meshes with an acupuncture gear 30 fixed to the main shaft 18 via bevel gears 27, 28, 29. On the other hand, headstock 7
A gear box 31 integral with the headstock 7 is formed at the rear end of the headstock 7. A rear end portion of the main shaft drive shaft 24 protruding from the rear end of the swing transmission shaft 19 is connected via a spline 33 to a cylindrical rotation transmission shaft 32 rotatably supported by a gear box 31 . A gear 34 attached to the rear end of this rotation transmission shaft 32 is connected to a gear box 31.
It meshes with a gear 36 integrated with a main shaft driving motor 35 installed in the gear box 31 via a gear group 37 rotatably attached to the gear box 31. Further, the rear end portion of the rod 23 passes through the rotation transmission shaft 32 and faces a rod 39 of a fluid pressure cylinder 38 installed in the gear box 31 with a slight gap therebetween. Further, the tip of the rod 23 faces the pull stud 40 of the main shaft 18 with a slight gap therebetween. Due to the operation of this fluid pressure cylinder 38, the rod 2
3, the pull stud 40 is actuated to effect an automatic exchange of the tool 17 (not shown in FIG. 3). On the other hand, a cylindrical ram drive shaft 41 rotatably supported by a gear box 31 K 101 is attached to the ram 11 by a sliding key 42.
The gear 43 fixed to the rear end of the ram drive shaft 41 has a gear 45 integrated with a ram rotation motor 44 installed in the gear box 31. N car group 46 rotatably mounted
are interlocked through. A cylindrical main shaft holder drive shaft 47 that can rotate relative to the ram drive shaft 41 is fitted into the ram drive +hl+41, and this main shaft holder drive shaft 47 is rotatably supported by the gear box 31.
・Th. This main shaft holder sliding shaft 47 has a ram drive shaft 4
A planetary gear 49 meshing with an internal gear 48 formed on the inner periphery of the tip 1, and an internal sun gear 5 formed on the swing transmission shaft 19.
The planetary gear 51 meshing with 0 and these planetary gears 49.5
1 and gears 52 are respectively rotatably attached. Furthermore, a gear 55 integrated with a main shaft holder driving motor 54 installed in the gear box 31 meshes with a gear 53 fixed to the rear end of the main shaft holder driving wJ shaft 47 .

Therefore, the quill drive motor 13 operates and the feed screw 1
4 starts rotating, the quill 12 reciprocates in the direction of arrow Z with respect to the headstock 7, and at the same time, the ram 11 reciprocates in the direction of arrow Z with respect to the ram drive shaft 41, and the main shaft drive shaft 24 swings. It reciprocates in the direction of arrow Z with respect to the rotation transmission shaft 32 together with the transmission shaft 19 . This allows tool 1
A reciprocating movement in the direction of arrow Z at 7 is performed.

In addition, the ram rotation motor 44 operates and the ram drive shaft 41
When the tool starts rotating, the ram 11 pivots via the sliding key 42, and the tool 170 can be indexed and rotated. In this case, the rotational force of the ram drive shaft 410 is transmitted to the planetary gear 49 which meshes with the # gear 48. Gear 52. Planetary gear 51
° Since the ram drive shaft 41 and the swing transmission shaft 19 rotate synchronously by being transmitted to the swing transmission shaft 19 via the sun gear 50,
There is no risk that the spindle holder 16 will swing relative to the ram IIK. Further, when the main shaft holder drive motor 54 operates and the main shaft holder drive shaft 47 rotates, the planetary gear 49 that meshes with the internal gear 48 turns while rotating, and this rotational force is transferred to the gear 52. Gears 20 to 21 . which rotate integrally with the sun gear 50 via planetary gears 51 . The power is transmitted to the worm and worm wheel 22 in a deceleration manner, and the main shaft holder 16 swings around the swing shaft 15 at a very slow speed. This allows the orientation of the tool 17 to be set arbitrarily. When the main shaft drive motor 35 operates and the rotation transmission shaft 32 starts rotating, the main shaft rotation ←) 124 rotates via the spline 33, and this rotational force is transmitted from the gear 25 to the gear 26, the bevel gear 27, and 28. ．．
29.30, and the main shaft 18 rotates to turn the tool 17. Further, when the saddle drive motor 6 and the headstock drive motor 10 are operated and the feed screws 5 and 9 are rotated, the main shaft 18 moves arbitrarily on the XY plane together with the headstock 7. To replace the tool 17, operate the fluid pressure cylinder 38 to connect the pull stud 4o via the rod 23.
This can be done by moving .

In this embodiment, the rotation transmission shaft 32 and the main shaft drive shaft 24 are connected through the spline 33, but they may be connected through a sliding key, serrations, or the like. Further, it is also possible to similarly connect the ram 11 and the ram drive shaft 41 via splines, serrations, or the like.

Furthermore, this device has a flange portion 1 formed on the main body 2 that can be attached to and detached from a column, side girder, etc. For example, #! As shown in Figure 4 (b)←→)(e)K, the compressor unit can be easily attached to columns or horizontal girders in various ways depending on the surface of the workpiece (not shown). Therefore, it can be installed in addition to the column or horizontal girder of an existing machine tool, making it possible to handle more complex machining.

In this way, the work of the present invention 1! According to Mr. P, the drive rotation of the main shaft, its turning side-out, six-legged rocking, and back-and-forth movement are operated by coaxially fitting a large number of rotating shafts,
Since the main shaft can be freely operated to move horizontally and vertically in addition to the fore-and-aft movement, it is possible to reduce the outer diameter of the headstock, making the entire device smaller and lighter, and the workpiece remains fixed. It is highly versatile and can perform complex machining from various directions. Furthermore, this device can be easily set on a column, horizontal girder, etc., and by combining multiple devices, it is possible to simultaneously process even irregularly shaped workpieces from various directions. As a result, the production line can be downsized and streamlined.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the 'D (punishment machine) according to the present invention, Fig. 2 is a rear view thereof, Fig. 3 is a diagram of its internal structure, and Fig. 4 (A) (
B), (C), and) and (E) are respectively illustrations of the settings of this device. In the drawing, 1 is a flange, 2 is a main body, 3 is a saddle, 6 is a saddle drive motor, 7 is a headstock, 10 is a headstock drive motor, 11 is a ram, 12 is a tile, and 13 is a quill drive Motor, 15 is a swing shaft, 16 is a main shaft holder, 18 is a main shaft, 19 is a swing transmission shaft, 20, 21, 25, 26, 34, 36, 4
3, 45, 52, 53. 55 is a gear, 22 is a worm wheel, 24 is a main shaft drive shaft, 27 to 30 are bevel gears, 31 is a gear box, 32 is a rotation transmission shaft, 33 is a spline, 35 is an upper gear for driving the main shaft, 37.46 is a main shaft drive shaft Gear group, 41 is a ram drive shaft, 42 is a sliding key, 44 is a ram rotation motor, 47 is a spindle holder drive shaft, and 54 is a spindle holder drive motor. Patent applicant: Mitsubishi Heavy Industries, Ltd., sub-agent Patent attorney Shibe Mitsuishi (and 1 other person) Figure 4 C) Cron CIX) (
d) C)

Claims (1)

[Claims] a frame-shaped main body that is detachably attached to a suspension base; a saddle that is supported so as to be reciprocally driven relative to the main body; and a saddle that can be reciprocated relative to the saddle in a direction perpendicular to the reciprocating direction of the saddle. A cylindrical headstock supported by
A tile that is fitted and supported on the headstock so as to be reciprocally movable in a direction perpendicular to the reciprocating direction of the headstock and the reciprocating direction of the saddle, and a tile that is rotatably fitted and supported with respect to the tile. a cylindrical ram; a main shaft holder having a swing axis perpendicular to the longitudinal direction of the ram, the swing axis being pivotally supported on the tip of the ram by a swingable button; A main shaft rotatably attached to the main shaft holder at right angles to the shaft, and a cylindrical swing whose tip end is connected to the swing shaft via a gear and rotatably supported coaxially with the swing shaft by the ram. a transmission shaft, a main shaft drive shaft whose distal end portion connected to the main shaft via a gear projects from the distal end of the oscillation transmission shaft and is rotatably supported coaxially with the oscillation transmission shaft; and the head. a rotation transmission shaft that is rotatably attached to the stock and is slidably connected to the main shaft drive shaft in the longitudinal direction to transmit rotational force to the main shaft drive shaft; a ram drive shaft that is slidably fitted and rotatably supported by the headstock to transmit rotational force to the ram; a ram drive shaft that is rotatably fitted and supported by the ram drive shaft; A machine tool comprising a cylindrical main shaft holder drive shaft to which a planetary gear that meshes with an internal gear formed on the inner periphery of the shaft and a sun gear formed on the outer periphery of the swing transmission shaft is rotatably attached.