JPS61103713A - Multi-spindle machine tool - Google Patents

Abstract

PURPOSE:To provide a multi-shaft machine tool with good processing efficiency and easy response to different types of works processed, by forming a base frame, supporting a tallet head, with possibility of moving for a certain specified angle with respect to the advancing direction of the base frame. CONSTITUTION:When an index table 22 is moved along a feed unit 20 in the A direction by operating a servo motor 18 so as to advance a crank shaft W, also a tallet head 38 on the table 22 moves to the shaft W, and a drill 46c bores a preparatory hole for tapping in the end face of the shaft W. When the hole is made, the motor 18 is reversed to move the head 38 in the B direction, and upon retraction from the shaft W a motor 28 is actuated to shift an index table 24 along guide rails 32a, 32b in the C direction through the action of a ball and screw mechanism, and a tool 46b is fronted to the end face of the shaft W. Then the motor 18 is operated regularly to advance the head 38 in the A direction, and upon spraying into the preparatory hole from a nozzle 46b tapping is carried out with a tool 46a.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a talent-type multi-axis machine tool, and more specifically, the present invention relates to a talent-type multi-axis machine tool, and more particularly, a heel fly (J) that supports a talent head is moved forward and backward toward a workpiece C), and a machine tool that is perpendicular to the forward and backward direction is moved forward and backward toward a workpiece. A multi-axis machining machine that is configured to move in both directions, allowing a series of multiple tools attached to a single gearing head to be sequentially pushed forward to perform pilot hole drilling, tapping, reaming, etc. in a workpiece. Regarding machines.

- Iffi requires a series of processes such as drilling a pilot hole for a screw, tapping, reaming, chamfering, and counterbore when drilling a hole for an engine crankshaft, etc. using a multi-axis machine tool. be done. In conventional multi-axis machine tools, when drilling holes as described above, the type of machining, that is,
It has been pointed out that each time a process changes, the tool must be replaced or the workpiece must be moved to another machine tool, resulting in a significant reduction in machining efficiency. In addition, recently, various machine tools equipped with automatic tool changers have been developed, but these types of machine tools are extremely complex and expensive. Furthermore, even when tools are automatically replaced, there are disadvantages such as the need to temporarily stop the production line because it takes a great deal of time to replace the tools.

Therefore, as a result of intensive research and efforts, the present inventors focused on a turret head equipped with a plurality of gigantic heads each having a large number of tools. If configured to be movable in a direction intersecting with the workpiece, multiple machining processes of the workpiece can be performed continuously and sequentially at one station, cutting etc. can be performed extremely efficiently, and the tool or gigang head can be replaced. It has been found that by doing so, a multi-axis machine tool that can easily handle different types of workpieces can be obtained, and the above-mentioned disadvantages can be eliminated.

Therefore, an object of the present invention is to enable a series of machining operations to be performed by sequentially facing a workpiece with a plurality of tools connected to one gearing head, thereby achieving high machining efficiency and machining of different types of workpieces. The object of the present invention is to provide a multi-axis machine tool that can easily handle various types of problems.

In order to achieve the above object, the present invention provides a base frame on a base so that it can move forward and backward toward a workpiece, and a turret head that can be indexed and rotated on an inclined support surface of the base frame. A multi-axis machine tool equipped with a plurality of gearing heads each having a plurality of tools at equally divided positions, in which a base frame supporting the turret head is movable in a direction of displacing a predetermined angle with respect to the forward and backward direction of the base frame. It is characterized by being configured as follows.

Next, preferred embodiments of the multi-axis machine tool according to the present invention will be described in detail with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1o indicates a multi-axis machine tool, and the multi-axis machine tool 10 has a rotary table 14 on its base 12, and two turrets that face each other so as to be rotated in parallel. 16a and 16b are provided.

In one turret head unit 16a, first, a feed unit 20 consisting of a servo motor 18 and a ball screw mechanism (not shown) is fixed on the base 12, and is mounted on the feed unit 2o in the directions of arrows A and B in the figure. That is, the first index table 22 is arranged so as to move forward and backward toward the rotary table 14. Next, a second index table 24 is disposed above the first index table 22, and a substantially triangular prism-shaped base frame 26 is disposed on the second index table 24. The second index table 24, the third
As shown in the figure, the first index table 22 can be freely displaced by a servo motor 28 built into the first index table 22 and a ball mechanism 30 rotated by the servo motor 28. That is, the inner threads 31a and 31b protruding from the lower surface of the second index table 24 are screwed into a ball screw 33 connected to the rotational drive shaft (not shown) of the servo motor 28. is rotated along a pair of guide rails 32a and 32b provided on the first index table 22 in a direction perpendicular to the forward and backward direction of the first index table 22, that is, in the direction of arrows C and D in the figure. It is configured to be movable.

On the other hand, a turret head 38 is provided on a 45-degree inclined support surface 34 constituting a part of the triangular prism-shaped base frame 26 via a fixed support shaft 36 so as to be indexable and rotatable.

In this case, the turret head 38 disposed on the inclined support surface 34 as described above is inclined similarly to this inclined support surface 34 to form an inclined surface 42, and furthermore, the inclined surface 42 is divided into four equal parts. A plurality of tools 46a to 4, each of different types
7D 44 is attached to 4 gears holding 6g c
I will be beaten.

As shown in FIG. 4, the turret head 38 includes a drive motor 48 fixed to the base frame 26 and an indexing cylindrical cam 50 that is rotationally driven by the drive motor 48 via a gear mechanism. , the sauce throat head 38
It is configured to be indexed and rotated by an indexing cam follower 52 provided for each gearing head 44 on the side. Furthermore, the tools 46a to 461 held by the gearing head 44 are connected to a drive motor (not shown) mounted on the base frame 26 and a rotary drive shaft 54 of this drive motor via a gear mechanism, and are connected to a shift lever.
56, the turret head 38 is rotationally driven at the processing position by a drive mechanism consisting of a connecting shaft 60 that is detachably attached to the intermediate shaft 58 on the turret bend 38 side and a spindle shaft 62 that is connected to the intermediate shaft 58. ing. The shift lever 56 is the indexing cylindrical car,
The connecting shaft 60 is operated in synchronization with an indexing rotation mechanism including 50, and is configured to move the connecting shaft 60 by manual force in the figure to engage the intermediate shaft 58 at the processing position of the turret hemometer F38.

Next, (to the turret on the To side, the turret head unit 16b holds two tools as a set in each gearing head 44, and the tools 64a to 64h as a whole are held.Other than this configuration, the one turret head unit 1i6a described above Because of the similar configuration, the turret head unit 16a
The same components are given the same reference numerals and detailed explanations thereof will be omitted.

The multi-axis machine tool according to the present invention is basically constructed as described above, and its operation and effects will now be explained with reference to FIG. 5.

FIG. 5 shows a case where one of the turret head units 16a is used to machine a hole in the crankshaft W.

That is, the crankshaft W is mounted and fixed on the rotary table I4 via a jig.

On the other hand, tools 46a to 46C for machining tapped holes at both ends of the crankshaft W are disposed in the gearing head 44 at the machining position of the turret head 38. In other words, the tool 46c is a drill for drilling pilot holes for screws,
The tool 46b is a nozzle for spraying a pilot hole for a screw, and the tool 46a is a tap for tapping a screw.

In such a state, first, the tools 46a to 46c
The motor of the drive mechanism described above is energized and driven to rotate. That is, the drive shaft 54 rotates due to the urging force of the motor, and the rotation of the drive shaft 54 is transmitted to the connecting shaft 6 through a gear mechanism.
0. For this purpose, the intermediate shaft 5 is attached to the connecting shaft 60.
The tools 46a to 46C are rotationally driven by the rotation of the spindle shaft 62 connected via 8 (see FIG. 4). Thereafter, the servo motor I8 is energized to move the first index table 22 along the feed unit 20 in the direction A in the figure and advance it toward the crankshaft W. As a result, the turret head 38 placed on the first index table 22 via the base frame 26 etc. also moves toward the crankshaft W.
A pilot hole X for a screw is formed in the end surface of the crankshaft W by the tool of the gearing head 44 in the processing position, that is, the drill 46c. Of course, at this time, the end surface of the crankshaft W and the tool 46c are set in advance at opposing positions. After the screw hole X is formed in this way, the servo motor 18 is reversely rotated to move the turret head 38 in the direction B in the figure and retreat from the crankshaft W. After this, the servo motor 2B is energized and the third
The ball screw mechanism 30 shown in the figure moves the second index table 24 along the guide rails 32a and 32b on the first index table 22 in a direction perpendicular to the traveling direction of the first index table 22, that is, arrow C in the figure. direction, and the tool 46b held by the gearing head 44 is made to face the end surface of the crank shirt +-W. Next, the servo motor 18 is again urged in the forward rotation direction to move the turret head 38 forward in the direction of arrow A in the figure. Perform misting. When the spraying is completed in this way, the turret head 38 is further shifted in the direction of arrow C in the same manner as described above, and the tool 46a is
That is, by tapping a screw into the prepared screw hole X using a tap, and then shifting the turret head 38 in the direction of the arrow and returning it to its original position, all machining by the tools 46a to 46c of the gearing head 44 in the machining position is completed. do.

Then, by energizing the drive motor 48 shown in FIG. 4, the turret head 38 is indexed and rotated 90 degrees by an indexing rotation mechanism such as the indexing cylindrical cam 50, and the throat 44 is placed in the processing position for the next process. set. To Gu Young at this time...
The throat 44 sequentially holds, for example, a drill 46N for pin hole kneading when machining crank pin holes, a drill 46 for pin hole drilling, and a reamer 46j for pin hole machining. Therefore, by appropriately moving the turret head 38 in the directions of arrows A and B and in the directions of arrows C and D in the same manner as described above, machining, drilling, and reaming of the crank pin hole in the crankshaft W can be sequentially performed. .

Further, by indexing and rotating the turret head 38 in the same manner as described above and rotating the rotary table 14 as appropriate, a hole orthogonal to the crank pin hole can be machined. Therefore, at this time, the gearing head 44 holds an appropriate number of trills 46g to 46i for drilling holes perpendicular to the pin.

In this way, in this embodiment, the sagging head 38 can also move in the lateral direction perpendicular to the direction in which it advances and retreats toward the workpiece, so drilling holes in crankshafts, etc. can be completed in one station in a short time and extremely efficiently. It can be done. Furthermore, by replacing the tools 46a to 4i and the gearing head 44, it is possible to easily process different types of workpieces. Therefore, unlike the prior art, there is no need to provide a dedicated device for each workpiece, further reducing installation space and equipment costs. - In this embodiment, two turret gutter units 16a and 16b are provided on the base 12 at positions facing each other with the workpiece in between, so machining efficiency can be increased by operating these units simultaneously to perform a predetermined machining. Needless to say, it can be further improved.

As explained above, according to the present invention, in a turret type multi-axis machine tool, the base frame supporting the turret 71 and the base frame 71 is preferably moved in the direction in which the base frame 71 and the base frame 7 are displaced in the forward and backward direction of the frame. Since it is arranged to be movable in the direction perpendicular to the advancing and retracting direction of the base frame, multiple machining processes of the workpiece can be performed continuously and sequentially at one station. The effect is that it can be easily adapted to workpieces.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design can be made without departing from the gist of the present invention. Of course.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of a multi-axis machine tool according to the present invention, and FIG.
The figure is a plan view of a multi-axis machine tool according to the present invention, FIG. 3 is a partially cutaway plan view of a multi-axis machine tool according to the present invention, and FIG. 4 is a part of a multi-axis machine tool according to the present invention. Front view of cutout part, 5th
The figure is a plan view of essential parts showing the operating state of the multi-axis machine tool according to the present invention. 10...Multi-axis machine tool 12...Base 14...Rotary table 15a, 16b...Unit to turret 18...Servo motor 20...Feed unit 22...First
Index table 24...Second index table 26...Base frame 28...Servo motor 3
0... Ball screw mechanism 31a, 31b... Internal screws 32a, 32b... Guide rail 33... Ball screw 34... Inclined support surface 36... Fixed support shaft 38... Turret head 42... Inclined surface 44.・Guyang head 46a-461・・Tool 48・・Drive motor 50・・Cylindrical cam 52・・Index cam follower

Claims (3)

[Claims] (1) A base frame is provided on the base so that it can move forward and backward toward the workpiece, and a turret head is provided on the inclined support surface of this base frame so that it can be indexed and rotated, and the turret head has a gang with a plurality of tools. A multi-axis machine tool equipped with a plurality of heads at equally divided positions, characterized in that a base frame supporting the turret head is configured to be movable at a predetermined angle with respect to a direction in which the base frame advances and retreats. Multi-axis machine tool. (2) In the machine tool according to claim 1,
A multi-axis machine tool configured such that a plurality of tools corresponding to a plurality of types of machining are sequentially disposed on at least one gang head on a straight line orthogonal to the advancing and retreating direction of the base frame according to the machining process. (3) In the machine tool according to claim 1 or 2, the first machine tool moves forward and backward on the base toward the workpiece.
A second index table is provided above the index table so as to be movable in a direction perpendicular to the advance/retreat direction,
A multi-axis machine tool configured such that a base frame is disposed above the second index table.