JPH03202240A - Complex machine tool - Google Patents

Abstract

PURPOSE:To make possible accommodation to a machining field of a machining center by chucking a short axis workpiece and a flange workpiece to a second machine spindle, performing X, Y, Z axial control of a spindle head, and performing peripheral machining with a machining tool mounted on a main spindle or a machining tool mounting part. CONSTITUTION:A machining headstock 11 in the form of the headstock of a lathe is placed and fixed on a horizontally rotating table 7A, and a workpiece is held by a chuck 12 fitted to the tip of machining main spindle. The main spindle axis of the machining headstock 11 is indexed and fixed in the direction of X axis or in the direction of Z axis by the turning of the horizontally rotating table 7A, the workpiece is held by the chuck 12 and rotated at a high and low speed. On the other hand, a machining tool is mounted on a main spindle 5 or a machining tool mounting part 9 with TC, and machining processing or milling processing is performed on the workpiece under control by Y axis of a spindle head 4 and X axis of a Z axis control column 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a multifunction machine tool which provides a machining center with a turning function and which can be combined into units.

BACKGROUND OF THE INVENTION Conventional machining centers do not have a turning function, and even relatively simple shapes have to be processed using a separate lathe, which is inconvenient. To solve this inconvenience, JP-A-53-14
No. 3089 1 and JP-A-61-197134 are known.

Problems to be Solved by the Invention In JP-A-53-143089, a workpiece supported on a lathe-type workpiece support is machined using a turning tool installed on the spindle head of a machining center. However, there is a problem in that the machining center is limited to those supported by a lathe, such as shafts, and cannot fully demonstrate the functions of a machining center. In addition, JP-A No. 61-197134 has a turning unit placed on a work table and a tool attached to the spindle to provide turning function.
It is inconvenient that it must be attached to and detached from each table, which poses a problem in production efficiency, and there are many problems in dealing with various workpieces.

The present invention was made in view of the problems of the conventional technology, and its purpose is to fully utilize the functions of a machining center, to enable it to be applied to the turning field, and to be widely applicable to various workpieces. The aim is to provide a multi-tasking machine tool that can handle this.

Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention provides a machining center with a first spindle to which a turning tool can be mounted and/or a spindle head having a turning tool attachment part, and a spindle head provided on a bed. Two or more fixed and/or rotationally indexable and positionable tables and a second spindle that is placed on the at least one table and/or bed and has a workpiece gripping function and is capable of high-speed rotation and indexing and positioning. Furthermore, the table with the second main axis of the workpiece gripping table opposed can be approached in the direction of one control axis of the machining center and moved between St.

In addition, at least one second spindle can be rotated and indexed in a vertical plane, and at least one second spindle can be rotated and indexed in a vertical plane, and the two workpiece grips can be controlled relative to each other. It is possible to approach and separate in the axial direction. Furthermore, the workpiece has two or more fixed and/or rotationally indexable positionable tables on the workpiece mounting side plate, and a second spindle that can be rotated and indexed on the table and/or the bed. A gripping stand, a workpiece gripping stand whose second spindle can be rotated and indexed in a vertical plane, or a tailstock are selectively placed in combination, and this combination is placed on an IT device. One of the tables is capable of approaching and separating from the other table.

According to the first aspect of the invention, the short-shaft objects and flange objects to be turned are mounted on one or two second spindles, and the spindle heads of the horizontal machining center are mounted in X and Y directions.

Z-axis control is used to cut the outer periphery with a turning tool attached to the main spindle or turning tool mounting part, and milling is performed with an end mill. Additionally, heavy workpieces on a fixed table are milled using an end mill. Alternatively, the outer diameter and end face of one workpiece is turned with a turning tool, and milling is performed with an end mill, and the other second spindle is chucked during machining.

In the second aspect of the present invention, a machined part is attached to one turning spindle and the other turning head is brought close to each other to transfer the workpiece and perform processing on unprocessed parts such as back surface processing.

According to the third aspect of the present invention, processing similar to that of the first aspect can be performed using a vertical machining center.

i Claim 4 can perform the same processing as claim 2 in a vertical machining center.

The apparatus according to claim 5 and 6 performs machining such as turning and milling by selectively combining the units in accordance with the workpiece.

Embodiment A: Compatible with horizontal machining center In Fig. 1 below, which shows a horizontal machining center and a workpiece side bend, there are two sliding guide surfaces 1a in the X-axis direction on the top surface of the machine side bed 1. A saddle 2 is slidably placed on the saddle 2 and positioned in the X-axis direction by an NC device servo motor (not shown) and a feed screw.

Two sliding guide surfaces 2a in the Z-axis direction are manually cut on the upper surface of the saddle 2, and the positioning of a column 3 is controlled on these by a servo motor and a feed screw (not shown). A guide surface 3a in the vertical Y-axis direction is cut on the front surface of the column 3, and a spindle head 4 is slidably mounted thereon and is vertically positioned by a servo motor (not shown). A horizontal main shaft 5 is rotatably supported on the main spindle head 4 so as to allow rotation, angular positioning, and fixation.

Measuring instruments, etc. are replaced from the magazine by ATC as appropriate.

In FIG. 2, in addition to the spindle 5, the spindle head 4 is provided with a turning tool mounting portion 9 or a tool rest exclusively for turning tools, which has one mounting position where the turning tool can be replaced by ATC.

A workpiece side bed 6 is installed in front of the machine side bed 1, either side by side or integrated with it, and on the bed 6 there are tables 7. is provided.

First of all, as for the table form, both of the tables 7 and 8 shown in Fig. 3 are of a fixed type, and the one shown in Fig. 4 is a known horizontal rotary table 7A that can be indexed and rotated by 45 degrees if necessary by 90' in a horizontal plane. The others are fixed tables 8, or both horizontal rotary tables 7A, 8A, vertical rotary tables 15, and 1
A guide surface in the X-axis direction is formed on each table, and the positioning of the headstock bottom plate 10 is controlled by a servo motor feeder (not shown).

As is known from conventional machining centers, workpieces can be fixed onto these tables via workpieces or pallets.

Selection format FIG. 5 A turning headstock 11 in the form of a lathe headstock is mounted and fixed on the horizontal rotary table 7A. The turning spindle can be rotated from high-speed rotation for turning to low-speed rotation for milling by a motor (not shown), and has a chuck 12 fitted on the tip of the turning spindle.
The flange and short shaft workpieces are gripped. The spindle axis of the turning headstock 11 is rotated by the rotation of the horizontal rotary table 7A.
It is indexed and fixed in the axial direction or the X-axis direction, and the chuck 1
2, the workpiece is gripped and rotated at high and low speeds. On the other hand, a turning tool is attached to the main spindle 5 or turning tool attachment part 9 by ATC, and the main spindle! ! Y-axis and Z-axis control of I4.

Turning or milling is performed on the workpiece under the X-axis control of the column 3. A block-shaped large workpiece or a heavy workpiece is placed and fixed on a fixed table 8, and machining is performed using the machining center.

When the machining on the horizontal rotary table 7A is completed, the horizontal rotary table 7A is rotated to the workpiece attachment/detachment position to exchange the raw material and the workpiece.

Selection type 2 Fig. 6 - The tables 7.8 are used as horizontal rotary tables 7A and 8A, and the turning headstock II is mounted and fixed on each of them, and similar or different types of flanged objects and short shaft objects are processed in the same manner. Setting is possible on the one hand and during processing on the other hand.

Selection type 3 Fig. 7 Turning headstock 11 on fixed table 7. A headstock bottom plate 10 placed movably in the X-axis direction on a fixed table 8
A turning headstock 11 is provided on the top, facing and concentrically, and serves as a turning and milling processing station. After machining the workpiece gripped by the chuck 12 of the turning headstock 11 on the fixed table 7 as described above, the headstock bottom plate 10 is controlled on the X axis to grip the machined workpiece with the chuck and remove the workpiece. move. Then, the unprocessed parts are processed.

In other words, the receiver of the workpiece can be transferred and the process can be combined (back side machining)
It is also possible to process thin and long objects. In addition,
It can be used as a tailstock instead of a turning headstock for machining long-axis objects.

B: Vertical machining center compatible No. 8 showing the vertical machining center and workpiece side bed
In the figure, a 4° spindle head is inserted into the same column as a horizontal machining center, and a tool is attached to and removed from this 4° spindle head by ATC, and the main shaft 20, which is fixed at 90 degrees of rotation and whose axis is vertical, can rotate. The bearing is mounted on the shaft. The turning tool is then mounted on the spindle, or as shown in Figure 2, the turning tool is mounted on the spindle head 4'.
It is attached to the tool mounting section installed perpendicularly to the tool.

Selection type 4 FIG. 9 - A vertical rotary table 15 with more indexing angle positions of 90'' in the vertical plane is placed on the fixed table 7 and a turning headstock 16 is mounted on the table 7. In some cases, it is mounted directly on the bed 6.The turning headstock 16 has a turning spindle supported perpendicularly to the table's rotation axis so that it can rotate at high and low speeds by a motor (not shown), and a chuck 1 at the tip.
7 is fitted and serves as a turning and milling station. To perform machining with the spindle 20 of a vertical machining center, the turning spindle of the turning headstock 16 is indexed horizontally outward, the workpiece is gripped by the chuck 17, and the workpiece is vertically indexed and facing upward, and a turning tool is attached to the spindle 20. By fitting the cutting tool into contact with the outer periphery of the workpiece and moving the main spindle 20 along the X axis, cutting can be performed on the outer diameter. Alternatively, outer diameter cutting can be performed by setting the workpiece horizontally and feeding the spindle 20 along the X axis.

Furthermore, in order to have the turning headstock 16 face toward the front for reasons of workpiece supply, the vertical rotary table may be rotated by 90 degrees with respect to FIG. 9 and installed. Heavy objects and block materials are placed on a fixed table 8, which is a dedicated milling station.

Selection type 5 Figure 10 - The fixed table 8 of selection type 4 has the same structure as the fixed table 7, and is machined by turning.

This is aimed at streamlining the milling process.

Selection format 6 The fixed table 7 in FIG. The positioning is controlled in the X-axis direction so as to move toward and away from the table 7 using a motor and a feed screw, and functions in the same manner as selection type 3 in a vertical machining center. In addition, it is also possible to provide the tailstock slidably on the guide surface on the fixed table 8.

Although the workpiece gripping stand is provided on the table in this embodiment, it may be provided directly on the bed if necessary.

Effects Since the structure is as described above, the present invention has the following effects.

The compound machine tool according to the first aspect is capable of turning and milling a shaft workpiece on both tables, and can center one workpiece while machining the other workpiece. Further, when the workpiece gripping table is provided on one table, turning and milling of shaft objects can be performed on the other table, and milling of heavy objects and block shaft workpieces can be efficiently performed on the other table.

The compound machine tool according to claim 2.4 is capable of processing unprocessed parts such as the back surface by transferring the workpiece to the other workpiece holding table after performing turning and milling processing on one table,
Processes can be combined on the same machine, allowing for highly accurate and highly efficient production.

The compound machine tool according to claim 3 is particularly suitable for a vertical spindle machine and is capable of turning and milling.

The multifunctional machine tool according to claim 5 and 6 can be freely and widely adapted to meet the user's requirements, and since it has a unit configuration, the machine price is economical.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a horizontal machining center, Fig. 2 is a diagram showing the main spindle of the horizontal machining center and the turning tool attachment part of the main spindle head, Figs. 3 and 4 are explanatory diagrams of the workpiece side table bed, Fig. 5 The figure is an explanatory diagram showing a turning headstock mounted on a horizontal rotary table, Figure 6 is an explanatory diagram showing a turning headstock mounted on two horizontal rotary tables, and Figure 7 is an explanatory diagram showing a turning headstock mounted on two horizontal rotary tables. Fig. 8 is a configuration diagram of a vertical machining center; Fig. 9 is an explanatory drawing in which a vertical rotary table and a turning headstock are installed on one table; the other is a fixed table; Figure 10 is an explanatory diagram in which vertical rotary tables are placed on both tables and turning headstocks are attached, and Figure 11 is an illustration in which one of the turning headstocks in Figure 10 can be moved closer to and away from the other turning headstock. It is a diagram. 1...Bend 4...Spindle head 5...Spindle 6...Workpiece side bed 7, 8...Fixed table 7A, 8
A...Horizontal rotary table 9...Turning tool attachment part 11.16...Turning headstock 12.17...Chiak vertical rotary table

Claims (6)

[Claims] (1) A first spindle to which a turning tool can be attached in a machining center and/or a spindle head having a turning tool attachment part, and two or more tables provided on a bed that can be fixed and/or rotated and indexed; At least one of these
1. A compound machine tool comprising: a workpiece gripping stand that is placed on two tables and/or a bed and supports a second main shaft that has a workpiece gripping function and is capable of high-speed rotation and index positioning. (2) The multifunction machine tool according to claim 1, wherein the table having the second main axis of the workpiece holding table facing each other can be relatively moved toward and away from each other in the direction of the control axis. (3) The multifunction machine tool according to claim 1, wherein at least one second main shaft can be rotated and indexed in a vertical plane. (4) The multifunction machine tool according to claim 3, wherein the two workpiece gripping stands can be relatively moved toward and away from each other in the direction of the control axis. (5) In a machining center, a first spindle to which a turning tool can be attached and/or a spindle head having a turning tool attachment part, and two or more tables provided on a bed that can be fixed and/or rotated and indexed for positioning. selectively combining a workpiece gripping stand having a second spindle on the table and/or bed, a workpiece gripping stand supporting the second spindle so as to be pivotable and indexable in a vertical plane, and a tailstock. A multi-purpose machine tool characterized by being mounted on a machine. (6) The multifunction machine tool according to claim 5, wherein at least one of the tables can move toward and away from the other table.