JPS63191529A - Complex working machine tool - Google Patents

Abstract

PURPOSE:To turn a work with high working precision even if a main turning component force acts in the direction of Y-axis, by constituting a tool positioning means by installing clamp means which restrains the tool positioner at a turning position. CONSTITUTION:A tool positioner 2 is constituted of a clamp device 9 which restrains the tool positioner 2 at a turning position SP. Therefore, when turning is carried out, the clamp device 9 is driven to restrain the tool positioner 2 at the turning position SP. Therefore, even if a main turning component force in the direction of arrow AB acts onto the tool positioner 2 through a tool 17, accompanied with the turning work for a work 21, the tool positioner 2 is prevented form being vibrated, and the work 21 can be turned with high working precision.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Field of Application The present invention is a method for moving a tool in three axes (X, Y, and Z axes) to remove a workpiece held by a workpiece holding means such as a chuck. The present invention relates to a multi-tasking machine tool that performs predetermined machining on objects.

(b), Conventional technology Conventionally, when turning a workpiece on a lathe,
A workpiece is held in a chuck attached to the main spindle, and a tool positioning device such as a tool rest, on which a tool is placed, is moved appropriately in two axes directions, the X-axis and the Z-axis, which are perpendicular to each other, to process the workpiece. was being carried out. However, recently, machine tools (hereinafter referred to as multi-tasking machines) are equipped with tool positioning devices that can be moved not only in the X-axis and Z-axis directions, but also in the Y-axis direction, which is perpendicular to the x- and Z-axes. It is called a machine tool.

) is being used to perform processing such as milling in addition to turning.

(C) 0 The problem that the invention aims to solve However, when turning a workpiece using such a multi-tasking machine tool, the main component of cutting force acts on the tool positioning device in the Y-axis direction via the tool. I will do it. However, the tool positioning device.

Unlike conventional lathes, it is configured to move in the Y-axis direction, so it is prone to vibration during heavy cutting, etc., and there is a risk that the machining accuracy of the workpiece will be reduced.

In order to solve the above-mentioned drawbacks, one object of the present invention is to provide a multi-tasking machine tool that can turn a workpiece with good processing accuracy even when the main cutting force acts in the Y-axis direction. .

(d) Means for solving problem 1, that is, the present invention provides a tool positioning means (2) with a clamping means (9, 9A).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in one drawing, and therefore, this description is not limited to the description on the drawing. r (e) below
The same applies to the column "0 effect".

(e) 0 effect With the above-described configuration, the present invention provides the clamping means (9, 9
By driving A), the tool positioning means (2) acts to be positioned and restrained in the turning position (sp).

(f), Example Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a side view showing an embodiment of a multi-tasking machine tool of the present invention, Fig. 2 is a cross-sectional view showing an example of a clamping device for the multi-tasking machine tool, and Fig. 3 is another example of a clamping device. The sectional view and FIG. 4 are perspective views showing another embodiment of the multitasking machine tool of the present invention.

As shown in FIG. 1, the multi-tasking machine tool 1 has a cover 2.
A tool positioning device 2 is mounted on the base IA in the direction perpendicular to the plane of the paper (i.e., the Z-axis direction) and in the direction of arrows A and B (i.e., the Y-axis direction). )
and is provided so as to be freely movable and driven in the directions of arrows C and D (ie, the X-axis direction).

The tool positioning device 2 has a carriage 3 and a tool rest 6, and the carriage 3 is provided on the base IA in a manner that it can be freely moved and driven in the Z-axis direction.

A plurality of rail support members 7 constituting the guide member 5 are attached to both left and right ends of the carriage 3 in the figure, and a main body constituting the tool rest 6 is attached above the rail support members 7 in the figure. 6a constitutes the guide member 5 attached to the lower end 6c in the figure.
It is provided in such a manner that it can be freely moved and driven in the B direction, that is, the Y-axis direction. Further, the tool rest 6 has a tool holder 6b supported by the main body 6a so as to be freely movable and driven in the X-axis direction.

A tool 17 is detachably attached to the lower end of the tool holder 6b in FIG. 1.

Furthermore, a clamp device 9 is installed between the main body 6a and the carriage 3, and the clamp device 9 has a cylinder 11, as shown in FIG. A piston 12 is fitted into the cylinder 11 so as to be slidable in the directions of arrows C and D, and a lock pin 13 is provided on the lower surface of the piston 12 in the figure.

It is fixed so that it can slide freely in the C and D directions. An engaging part 13a is formed at the lower end of the lock bin '13 in the figure, and an oil chamber is formed at the upper and lower parts of the cylinder 11 in the figure, separated by a piston 12. 15a and 15b are formed. Furthermore, the cylinder 11
An oil supply pipe 16a is provided at the lower end in the figure, with one end thereof opening into the oil chamber 15a.
A hydraulic pump (not shown) is connected to the other end. Further, an oil supply pipe 16b is provided at the lower end of the cylinder 11 in the figure with one end opening into the oil chamber 15b, and a hydraulic pump (not shown) is connected to the other end of the oil supply pipe 16b. ing.

Further, in the upper surface 3E of the carriage 3, an engagement hole 9b constituting the clamp device 9 is formed when the tool rest 6 is positioned at the turning position SP shown in FIG.

It is bored in the direction of arrow C1D so as to be able to face the lock bin 13 described above. Note that the turning position SP here is
The Y collar of the cutting edge 17a of the turning tool 17 mounted on the tool post 6 (however, the rotation center CTI of the chuck 20, which will be described later)
is the origin. ) value.

This is the position where it becomes zero.

Furthermore, the base IA is provided with a headstock 19,
A chuck 2o mounted on a main shaft (not shown) is mounted on the headstock 19 so as to be rotatable in the direction of arrow E or F around a rotation center CTI, which is a horizontal axis. Note that a workpiece 21 is held on the chuck 2o, and a tailstock 26 is further provided on the base IA to face the headstock 19.

Since the multi-tasking machine tool 1 has one or more configurations, in order to turn the workpiece 21 held by the chuck 20 using the multi-tasking machine tool 1, the carriage 3 shown in FIG. While appropriately moving the tool holder 6b in the axial direction, the tool holder 6b is moved in the direction indicated by the arrow (i.e., in the main body 6ati-Y axis direction of the tool post 6).

(negative direction of the X-axis) to move the tool rest 6 to the turning position s.
Position at p.

Next, in this state, the clamping device 9 provided between the main body 6a of the tool rest 6 and the carriage 3 is driven to
to the turning position. That is, by driving a hydraulic pump (not shown), pressure oil is supplied to the oil chamber 15a formed in the cylinder 11 via the oil supply pipe 16a shown in FIG.

Then, the piston 12 slides in the direction of the arrow while being pushed by the supplied pressure oil. Then, the lock pin 13 fixed to the piston 12 also protrudes in the D direction and engages the engaging portion 1.
3a is fitted into an engagement hole 9b formed in the upper surface 3E of the carriage 3 in the figure. As a result, the tool rest 6 is at the turning position SP
will be restricted to.

In this way, when the tool rest 6 is positioned at the turning position SP, the chuck 20 is rotated together with the workpiece 21 in the direction of the arrow E, and in this state, the tool holder 6b is moved together with the tool 17 by a predetermined amount in the direction of the arrow. When turning is performed, the tool 17 has an arrow B as the workpiece is turned.
A principal cutting force acts in the positive direction of the Y-axis, and the tool rest 6 is pressed in the positive direction of the Y-axis.

However, since the tool rest 6 is restrained at the turning position SP by the clamp device 9, no vibration harmful to machining is generated during turning. As a result.

The workpiece 21 is turned by the tool 17 with good processing accuracy.

Next, in order to perform processing such as milling on the workpiece 21, the constraint relationship between the tool rest 6 and the carriage 3 is released. To do this, first, the oil chamber 1 of the clamping device 9 shown in FIG.
5a is drained, and in that state, the oil supply pipe 16b connected to the lower end of the cylinder 11 in the figure is drained.
Pressure oil is supplied from the oil chamber 15b to the oil chamber 15b. Then, the piston 12 moves in the C direction together with the lock pin 13 due to the supplied pressure oil, and as a result, the engaging portion L of the lock pin 13
3a also moves in the C direction and is positioned at a standby position a predetermined distance away from the engagement hole 9b upward in the figure. thus,
When the clamp relationship between the tool rest 6 and the carriage 3 is released, the rotating tool 17 is attached to the tool rest 6, and in this state, the tool rest 6 is moved appropriately in the Y-axis direction to perform milling, etc. processing.

In this embodiment, the case where the clamping means is constituted by the clamping device 9 has been described, but any clamping means can be used as long as it can restrain the movement of the tool positioning device □2 in the Y-axis direction. For example, the clamping means may be configured as a clamp device [9A] that utilizes frictional force as described below. In FIGS. 1 and 2, the same parts as those described are given the same reference numerals, and the explanation of those parts will be omitted. That is, as shown in FIG. 3, the clamping device W9A is installed in the rail support member 7 constituting the guide member 5, and is attached to the outside surfaces 7a, 7a and the inside of the rail support member 7 in the figure. The side surfaces 7b, 7b each have a sliding groove 7c.

7c and the grooves 7d, 7d in the direction perpendicular to the plane of the paper in the figure (i.e.
It is perforated and formed to extend in the direction of arrows A and B).

Nine clampers 27 are fitted into the matching grooves 7d so as to be movable in the directions of arrows G and H, and a ramp surface 27a with a large friction coefficient is formed on the side surface of the clamper 27 facing the rail 5b. has been done. Further, a plurality of piston rods 29 are fixed to the clamper 27 at predetermined intervals in the A and B directions.

The grooves 7c and 7d are fitted into a plurality of holes 7e, which are formed so as to communicate with each other, so as to be slidable in the G and H directions, respectively. Further, a piston plate 30 is fixed to the piston rod 29 and is fitted into the sliding groove 7c so as to be slidable in the G and H directions.

A plurality of springs 31 are compressed between the piston plate 30 and the sliding groove 7c so as to cover each piston rod 29.

Note that the clamper 27 is moved by these springs 31.
Via the piston plate 30 and each piston rod 29, it is always biased in the direction of arrow G.

On the other hand, on the outer surface 7a of the rail support member 7.

A lid 32 is provided to close the sliding groove 7G,
An oil chamber 33 is formed between the lid 32 and the piston plate 30 within the sliding groove 7c. Further, an oil supply pipe 35 is connected to the lid 32 with one end opening into the oil chamber 33, and a hydraulic pump (not shown) is connected to the other end of the oil supply pipe 35.

Since the clamp device 9A has the above configuration,
To turn the workpiece 21, the tool rest 6 equipped with the rotating tool 17 is positioned at the turning position gsp, and in this state, the clamp device 9A is driven to restrain the tool rest 6. To do this, first, by driving a hydraulic pump (not shown) to the oil chamber 33 shown in FIG. 3, pressurized oil is supplied through the oil supply pipe 35. The clamper 27 is pressed in the H direction via the piston plate 30 and each piston rod 29 against the elasticity of the spring 31.
The clamp surface 27a of is pressed against the rail 5b. Then, since the clamping surface 27a has a large friction coefficient, the tool post 6 is restrained at the turning position asp due to the frictional force generated between the clamping surface 27a and the rail 5b.

Next, in order to perform processing such as milling on the workpiece 21, the restraint between the tool post 6 and the carriage 3 is released.

To do this, first, the pressure oil filled in the oil chamber 33 is drained. Then, the piston plate 30 slides in the G direction together with each piston rod 29 due to the elasticity of the spring 31, and the clamper 27 also moves in the G direction via each piston rod 29. Therefore, the clamp surface 27a moves in the G direction away from the rail 5b, and the restraint between the tool rest 6 and the carriage 3 is released.

In this embodiment, the multitasking machine tool 1 is of a horizontal type, that is, the chuck 20 is mounted so as to be rotatable in the direction of arrow E or F around the rotation center CTI, which is a horizontal axis. However, when the multi-tasking machine tool 1 is a vertical type, that is, the chuck 20 is mounted so as to be rotatable in the direction of the arrow K or J around the rotation center CT2, which is a vertical axis, as shown in FIG. Let's discuss the case. In addition,
The same parts as those explained in FIGS. 1 to 3 are given the same reference numerals, and the explanation of the parts will be omitted.

That is, if the multitasking machine tool 1 is vertical,
Two rails 2 forming the guide member 23 on the base lA
3b and 23b are provided in parallel in the direction of arrow M, which is the y;& direction.

A carriage 3 is provided on the rails 23b, 23b so as to be freely movable and driven in the Y-axis direction via a plurality of rail support members 23c constituting the guide member 23 attached to the lower end 3F in the figure. ing.

Also, on the carriage 3 is the main body 6a of the tool rest 6.

The tool holder 6b is provided on the main body 6a so as to be movable in the direction of the arrow R1S, which is the Z-axis direction. It is being Therefore, when turning
Carriage 3 and base I on which the principal cutting force in the axial direction acts
A clamp device 9 or 9A is installed between A. That is, the cylinder 11 and the like constituting the clamping device 9 shown in FIG.
and insert the tool 1 into the engagement hole 9b on the base IA.
When the lock pin 13 is positioned at the turning position SP
Drill holes in the directions of arrows R and S so that they can face each other. Further, the clamp device [19A] is attached to each rail support member 23c of the guide member 23 in a built-in manner.

In this way, by installing a clamping means such as the clamping device 9 or 9A on a vertical multi-tasking machine tool, the carriage 3 can be clamped during turning.

Even when the main component of cutting force in the Y-axis direction is applied via the tool 17 and the tool post 6, vibrations can be effectively prevented from occurring in the carriage 3.

(g) 0 Effects of the Invention As described above, according to the present invention, the clamp device 9.9 can position and restrain the tool positioning means such as the tool positioning device 2 in the turning position [SP].
Since it is configured with a clamping means such as A, when performing turning processing.

By driving the clamping means, the tool positioning means is restrained at the turning position SP, so that the main cutting force in the Y-axis direction acts on the tool positioning means through the tool 17 as the workpiece 21 is turned. Also, it is possible to prevent the tool positioning means from vibrating, and it is possible to turn the workpiece with high machining accuracy.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a multi-tasking machine tool of the present invention, and FIG. 2 is a sectional view showing an example of a clamping device for the multi-tasking machine tool. FIG. 3 is a sectional view showing another example of the clamp device. FIG. 4 is a perspective view showing another embodiment of the multitasking machine tool of the present invention. 1... Multi-tasking machine tool 2... Tool positioning means (tool positioning device)
9.9A... Clamp means (clamp device) s
p... Turning position 2o... Work holding means (chuck) Applicant
Yamazaki Mazak Co., Ltd. Agent Patent Attorney Phase 1) Shinji (and 2 others) b

Claims (1)

[Scope of Claims] The workpiece holding means is rotatably provided, and the tool positioning means is arranged with respect to the workpiece holding means along the X-axis, the Z-axis, and the X-axis and the Z-axis, which are perpendicular to each other.
In a multi-tasking machine tool installed in a manner that can be freely moved and driven in three axial directions including a Y-axis perpendicular to the axis, the tool positioning means is provided with a clamping means capable of positioning and restraining the tool positioning means at a turning position. A multi-tasking machine tool composed of