JPS62218008A - Multi-spindle machine tool - Google Patents

Abstract

PURPOSE:To attempt an improvement of working efficiency by controlling a plurality of spindles equipped with working tools to move to either direction of X, Y and Z axes independently whereby performing works with the high degree of freedom in the wide range and deep depth of working. CONSTITUTION:For the movement to each of X, Y, X axial directions, respective drive means are provided so as to control the movement of spindles S1, S2, S3, and S4 separately. When a hole is drilled on one surface of a work, each of spindles S1 through S4 is moved from their original positions to the X and Y axial directions for making them cover each one quarter of one surface area of the work W. Subsequently, the spindle is moved to the Z axial direction for drilling a hole. As each of four spindles S1-S4 can be controlled to each of the X, Y, and Z axial directions independently, working efficiency is improved.

Description

Detailed Description of the Invention A1 Object of the Invention (1) Industrial Application Field The present invention relates to a multi-axis machine tool, and in particular, the present invention relates to a multi-axis machine tool, and particularly to a multi-axis machine tool that The present invention relates to a multi-axis machine tool that can independently control directional movement.

(2) Conventional technology Conventionally, as a multi-axis machine tool, for example,
The one disclosed in Japanese Patent No. 2156 is known.

(3) Problems to be Solved by the Invention However, the above-mentioned conventional technology moves a plurality of spindle blocks arranged in the horizontal direction, each having a plurality of spindles in the vertical direction, in the Y-axis, Y-axis, and X-axis directions. Although it is possible to adjust the spacing between the spindles in the horizontal direction, it is not possible to adjust the spacing between the spindles in the vertical direction. Furthermore, each spindle is connected to a rotary drive source at a fixed position via a universal joint and a telescopic transmission shaft, and the movement range of the spindle, that is, the processing area and processing depth are limited.

The present invention has been made in view of the above circumstances, and enables machining to be carried out over a relatively wide range and at a deep depth by freely moving a plurality of spindles in the Y-axis, Y-axis, and X-axis directions. The purpose is to provide a multi-axis machine tool with

B9 Structure of the Invention il1 Means for Solving Problems The machine of the present invention comprises a column erected on a base; and at least a pair of horizontally extending Axial guide rails; at least two left-right movable tables guided in the X-axis direction by the X-axis guide rails; and a pair extending vertically at least in front of each of the left-right movable tables spaced apart in the X-axis direction. an X-axis guide rail provided for each; an elevating table provided for each horizontal movement table to be guided in the Y-axis direction by the X-axis guide rail;
A ram guide that extends in the X-axis direction perpendicular to the axis and is integrated into each lifting table; A slide ram that is guided in the X-axis direction by each ram guide; A spindle motor that is fixed to the tip of each slide ram. a spindle along the X-axis direction to which a processing tool can be mounted; and X-axis driving means for driving each slide ram in the X-axis direction.

(2) Effect Since each horizontal movement table is movable in the X-axis direction, each lifting table is movable in the X-axis and Y-axis directions,
Furthermore, since each slide ram is movable in the X-axis, Y-axis, and
It is movable in the axial direction, and since a spindle motor is integrated into each spindle, each spindle can move over a wide area and with great depth.

(Third Embodiment Below, one embodiment of the present invention will be explained with reference to the drawings. In Figs. 1 and 2, this multi-axis machine tool
A plurality of, for example four, horizontal spindles Sl, 32. S3
．． S4, and each spindle 81 to S4 individually moves in the horizontal X-axis direction perpendicular to the axial direction thereof, the vertical Y-axis direction, and the X-axis direction which is the axial direction of each spindle 31-54. controlled.

A column 2 that extends in the vertical direction is erected on a fixed base l, and on the front surface 2a of this column 2 are provided X-axis guide rails that extend in the X-axis direction and form a pair with an interval in the vertical direction. 3a, 4a and their guide rails 3a, 4
A pair of X-axis guide rails 5a and 6a are fixedly provided above a and vertically spaced apart from each other. Also, the back 2 of column l
a includes X-axis guide rails 3b and 4b corresponding to the X-axis guide rails 3a and 4a, and the X-axis guide rail 5a.
, 6a are fixedly installed.

On the X-axis guide rails 3a, 4a; 3b, 4b, which correspond to each other and form a pair on the front surface 2a and rear surface 2b of the column 2, a pair of left and right first and second lateral movement tables 7.8 move in the X-axis direction. Supported X-axis; lf4 V-rail 5
a, 6a; 5b, 6b, a pair of left and right third and fourth lateral movement tables 9. IO is supported so as to be movable in the X-axis direction. Each horizontal movement table 7 to lO has the same structure, and has a movable plate 1) on the front side 2a side.
and a movable plate 12 on the rear surface 2b side. Moreover, the movable plate 1) of each horizontally movable table 7 to 10. Through holes 13 and 14 of the same rectangular shape, which are long in the vertical direction, are bored in the holes 12 .

Movable plate 1) of each horizontal movement table 7 to lO. 12, a pair of Y-axis guide rails 15a, 16aH15b extending in the Y-axis direction with an interval in the X-axis direction.

16b are fixedly installed in correspondence with each other. These Y-axis guide rails 15a, 16aH15b.

The first to fourth lifting tables 1 movable in the Y-axis direction by 16b? , 18, 19, 20 are each horizontal movement table 7~
Each is arranged for each IO.

Each of the lifting tables 17 to 20 has the same structure, and includes a top plate 21 guided in the Y-axis direction by Y-axis guide rails 15a and 16a, a Y-axis guide rail 15b,
16b and a back plate 22 guided in the Y-axis direction.

The top plate 21 and the board 22 of each lifting table 17-20 are movable in the vertical direction, that is, in the Y-axis direction, and pass through the through-hole 13° 14 of each horizontally moving table 7-10.
It is integrated with the fourth ram guide 23, 24°25.26. That is, each of the ram guides 23 to 26 is formed into a bottomed cylindrical shape having an outer diameter corresponding to the width of the through hole 13, 14, and is inserted into each of the through holes 13, 14 with the open end facing the top plate 21. , a top plate 21 is integrally provided at the open end of each of the ram guides 23 to 26. Also each ram guide 23~2G
The ram guides 23 to 26 extend relatively long in the axial direction, and a back plate 22 is integrally provided at the intermediate portion of each of the ram guides 23 to 26. Therefore, the top plate 22 and the back plate 23 are integrated via the ram guides 23 to 26 to form each lifting table 17 to 20, and the ram guides 23 to 26 pass through the through holes 13 and 14. Mobile device 1). 12
are substantially integrated to form each horizontal movement table 7 to IO.

Column 2 includes the Y-axis and Y-axis of each ram guide 23 to 26.
Four rectangular openings 65 for allowing axial movement
is provided.

First to fourth slide rams 27, 28, 29, 30 are slidably connected to each of the ram guides 23 to 26 so as to be movable in the axial direction, that is, the Z-axis direction.

Each of the slide rams 27 to 30 is formed into a cylindrical shape with a closed end on the front surface 2a side of the column 2, and the ram guide 2
Arms 31, 3 extending radially outward from the closed ends of the slide rams 27-30 protruding from the slide rams 3-26;
The proximal ends of 2, 33, and 34 are fixed, respectively. Moreover, each of the arms 31 to 34 has vertically adjacent slide rams 27 to 34.
The slide rams 27 to 30 are fixed to the closed ends of each of the slide rams 27 to 30 so as to be inclined inwardly by, for example, about 45 degrees toward the 30 side.

At the tip of each arm 31-34, a spindle 5l-34, on which a processing tool 35 can be detachably attached, is provided with a spindle motor 36, 37, 38, 39 integrated therein, parallel to each slide ram 27-30. Installed.

In order to drive the first to fourth lateral movement tables 7 to IO in the X-axis direction, first to fourth X-axis driving means 40 to 43 are provided between the column 2 and each of the lateral movement tables 7 to 10, respectively. provided. The configuration of each drive means 40 to 43 is basically the same, and only the configuration of the second X-axis drive means 41 will be described in detail below.
Regarding the configuration, corresponding main parts are only shown with the same reference numerals and detailed explanations are omitted.

The second X-axis drive means 41 includes a Y-axis threaded rod 44 extending in the X-axis force direction, and an X-axis servo motor 4 connected to the threaded rod 44.
5, and the tip of the threaded rod 44 is screwed into the second lateral movement table 8. Further, the threaded rod 44 is rotatably supported by a support member 46 fixed to the column 2.
The shaft servo motor 45 is fixedly supported by the column 2.

According to this configuration, since the second lateral movement table 8 is supported by the pair of upper and lower X-axis guide rails 3a, 4a; 3b, 4b, the rotation of the threaded rod 44 around the axis is 1ull.
Therefore, as the threaded rod 44 rotates, the second lateral movement table 8 moves in the X-axis direction.

Moreover, in order to drive the first to fourth lifting tables 17 to 20 in the Y-axis direction, the first to fourth Y! il+ drive means 48.49, 50.51 are provided, respectively.

Each Y! The +l+ drive means 48 to 51 basically have the same configuration, and the second Y-axis drive means 49 will be described below.
Only the configuration of the other Y-axis drive means 48, 5 will be described in detail.
0.51, corresponding main parts are only shown with the same reference numerals and detailed explanations are omitted.

The second Y-axis drive means 49 includes a Y-axis threaded rod 52 extending in the Y-axis direction, and a Y-axis servo motor 5 connected to the threaded rod 52.
3, and the Y-axis screw foot 52 is the second elevating table 18.
is screwed into the Furthermore, the Y-axis servo motor 53 is fixedly supported by the second left/right shift table 8.

According to this configuration, since the second elevating table 18 is prevented from rotating around the Y-axis, the second elevating table 18 moves in the Y-axis direction in accordance with the rotation of the Y-axis threaded rod 52.

In order to drive the first to fourth slide rams 27 to 30 in the Z-axis direction, first to 42nd axis drive means 55.5 are provided between each slide ram 27 to 30 and each ram guide 23 to 26.
6, 57, and 58 are provided, respectively. Each Z-axis drive means 5
5 to 58 are basically the same, and only the structure of the 42nd axis drive means 58 will be described in detail below, and the explanation of the other Z axis drive means 55, 56, and 57 will be omitted.

The 47th axis driving means 58 moves the inside of the fourth slide ram 30 in a Z direction.
It consists of a Z-axis threaded rod 59 extending in the axial direction and a Z-axis servo motor 60 connected to the threaded rod 59.
9 is an end plate 6 fixed to the open end of the fourth slide ram 30.
1, and the Z-axis servo motor 60 is fixedly attached to the closed end of the fourth ram guide 26. Moreover, a guide groove 62 extending in the axial direction, that is, the Z-axis direction, is bored in the inner surface of the fourth ram guide 26, and a key 63 that engages with the guide groove 62 is fitted in the outer surface of the fourth slide ram 30. be done. Therefore, the fourth slide ram 30 is prevented from rotating around the Z axis.

According to this configuration, the fourth slide ram 30, that is, the spindle S4 moves in two axial directions in accordance with the rotation of the Z-axis screw 59.

A mounting table 6 is placed in front of the column 2 at a distance from the front surface 2a.
4 is placed, and this i3! A workpiece W to be processed is placed on the device 64.

Next, the operation of this embodiment will be explained.
When drilling holes on one side of the workpiece W above,
Each of the spindles 51 to s4 operates to move in the X-axis and Y-axis directions from the original position shown in FIGS. While moving, each spindle 81 to S4 rotates and drilling is performed. Note that processing on the boundary line of the 1/4 area is controlled so that one of the adjacent spindles 81 to s4 escapes.

Further, the processing tools 35 at the tips of the spindles Sl to S4 may be of different types, and in this case, it is also possible to process the entire surface of the workpiece W with each of the spindles Sl to S4. For example, a drill may be attached to the spindle St, a tap may be attached to the spindle S2, a reamer may be attached to the spindle S3, and a spot facing cutter or a chamfering cutter may be attached to the spindle S4.

In this way, drilling with a drill, tapping with a tap, reaming with a reamer, and countersinking with a countersunk rivet or chamfering with a chamfering force cap can be performed successively.

In such a multi-axis machine tool, four spindles 81 to S4
moves in the X-axis, Y-axis, and Z-axis directions while being controlled independently, so compared to an axle machining center,
It has four times the capacity. Furthermore, by arranging such multi-axis machine tools, for example, facing each other, it is possible to process both sides of a workpiece at the same time.In particular, the multi-axis machine tool of the present invention can be used on a transfer line where workpieces flow continuously. By arranging them on one or both sides, machining efficiency can be dramatically improved compared to conventional axle machining centers.

C6 Effects of the Invention As described above, the machine of the present invention includes: a column erected on a base; at least a pair of horizontally extending X-axis guide rails provided at least in front of the column with a vertical interval therebetween; at least two horizontally movable tables guided in the X-axis direction by those X-axis guide rails; and a pair of Y-axis guides extending vertically and provided on the front surface of each of the horizontally movable tables with an interval in the X-axis direction. A rail; a lift table arranged for each horizontal movement table to be guided in the Y-axis direction by a Y-axis guide rail; and a lift table extending in the Z-axis direction perpendicular to the X-axis and Y-axis and integrated with each lift table. a ram guide guided in two axial directions by each ram guide; a spindle along the Z-axis direction that is integrated with a spindle motor fixed to the tip of each slide ram and to which a processing tool can be attached; ; X-axis driving means for driving each horizontal movement table in the X-axis direction; Y-axis driving means for driving each lifting table in the Y-axis direction; X-axis driving means for driving each slide ram in the Z-axis direction; Since it includes
Processing can be performed by freely moving a plurality of spindles in the X-axis, Y-axis, and Z-axis directions, and processing can be performed with a high degree of freedom in a relatively wide range and deep depth.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, and FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1.

Claims (2)

[Claims] (1) A column erected on a base; at least a pair of horizontally extending X-axis guide rails provided at least in front of the column with an interval between vertically; at least 2 guided by
two left-right movable tables; a pair of Y-axis guide rails extending vertically and provided at least in front of each of the left-right movable tables at intervals in the X-axis direction; guided in the Y-axis direction by the Y-axis guide rails; A lifting table is provided for each horizontal movement table; a ram guide is integrated into each lifting table and extends in the Z-axis direction perpendicular to the X-axis and Y-axis; and a ram guide is guided in the Z-axis direction by each ram guide. The slide rams are integrated with a spindle motor fixed to the tip of each slide ram, and the Z
a spindle along the axial direction; an X-axis drive means for driving each horizontal movement table in the X-axis direction; a Y-axis drive means for driving each lifting table in the Y-axis direction; and a drive means for driving each slide ram in the Z-axis direction. A multi-axis machine tool comprising: a Z-axis drive means; (2) The X-axis guide rails are arranged in two sets, upper and lower, respectively, on the front and rear sides of the column, and at least one pair of horizontal movement tables is provided for each set of mutually corresponding X-axis guide rails on the front and rear sides of the column. The X-axis driving means includes an X-axis threaded rod extending in the X-axis direction and screwed into each horizontal movement table, and an X-axis servo motor connected to the threaded rod and attached to the column. The Y-axis drive means is arranged for each horizontal movement table, and the Y-axis driving means includes a Y-axis threaded rod extending in the Y-axis direction and screwed to the lifting table, and a Y-axis threaded rod connected to the Y-axis threaded rod to drive the left-right movement table. The Z-axis driving means includes a Z-axis threaded rod extending in the Z-axis direction and screwed onto the slide ram, and a Z-axis screw rod that extends in the Z-axis direction and is screwed to the slide ram. Claim (1) characterized in that the Z-axis servo motor is connected to the rod and attached to the ram guide, and is provided for each slide ram.
Multi-axis machine tool as described in section.