JP2000326157A - Composite machining machine and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To individually carry out turn-broaching machining and turning machining or carry out machining by means of the combination of both the aforesaid machining. SOLUTION: This machine is formed out of a work driving unit 2 set up over a bed 1a in order to hold a work 5 at its one end by a chuck 4 so as to be rotated, a tail stock center 3 set up over the bed 1a for supporting the work 5 over a machining axial line (a) in a space intersected with the chuck 4 of the work driving unit 8 capable of being freely moved to the Y axis direction perpendicularly intersected with a X axis and a Y axis in parallel with a machining axial line by a X axis driving means and a Y axis driving means, and of a tool 12 provided for the machining unit 8, linearly moved to the tangential direction by means of a Z axis driving means 10 for carrying out both turn-broaching machining and turning machining for the work 5. By this constitution, since the linear movement of the tool 12 thereby allows the tool 12 to be made small in size, its machine itself can be made small in size, and its cost can also be lowered, and the replacement of the tool 12 can thereby be made in a short time, so that productivity can also be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined machining machine and a combined machining method capable of performing combined machining of turn broaching and turning (turning).

[0002]

2. Description of the Related Art Many conventional shaft workpieces (hereinafter simply referred to as "workpieces") are turned using a turning machine such as a lathe. There is also known a turret lathe which mounts and sequentially processes a tool while changing a tool.

[0003] On the other hand, a turning broaching machine is known as a machine for continuously performing a process from roughing to finishing of a work. In the conventional turning broaching machine described above, a plurality of broaching chips for performing from roughing to finishing are attached to a disk-shaped broaching tool or a linear broaching tool at intervals in the circumferential or linear direction. The broaching tool is configured to rotate or linearly move the broaching tool in the tangential direction of the workpiece while rotating the workpiece, and sequentially perform the turning broaching with the plurality of broaching tips.

[0004]

However, in the above-mentioned conventional turret lathe, the turret for mounting a plurality of tools is large, so that a large space is required for installing the turret, and the machine itself is large and expensive. There is a defect.

In the conventional turning broaching machine described above, a large broaching tool in which a plurality of chips are attached to a broaching tool formed in a disk shape or a straight shape is used.
Like the turret lathe, the machine itself becomes large and expensive, and the broach tool is large and heavy, so it takes time to replace it, and during this time machining work is interrupted, resulting in poor productivity and other problems. is there.

On the other hand, JP-A-63-19631, JP-A-63-196316, and JP-A-63-23781.
No. 0 discloses a turning machine for turning a workpiece while moving a tool linearly.

However, in each of these publications, the work is broached by linearly moving the tool only in a direction perpendicular to the axis of the shaft work, and the work is turned while moving the tool in the longitudinal direction of the work. And the types of workpieces that can be processed are limited, resulting in a lack of versatility.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems, and includes a turn broaching process in which a tool is linearly moved in a tangential direction of a work while rotating the work to process the work, and a work in which the work is rotated. It is an object of the present invention to provide a multi-tasking machine and a multi-tasking method capable of performing turning operations for turning a workpiece individually or as appropriate in combination by turning a tool while cutting.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, the work to be processed is rotated by gripping one end of a work to be processed by a chuck. A workstock drive unit, a tail stock center installed on the bed and supporting the work on the work axis between the chuck of the work drive unit, and the machining axis line by the X-axis drive means and the Y-axis drive means. X axis parallel to and Y orthogonal to the X axis
It comprises a processing unit that is movable in the axial direction, and a tool that is provided in the processing unit and that is linearly moved in the tangential direction of the work by the Z-axis driving means to perform turn broaching and turning of the work. is there.

With the above configuration, a conventional turret lathe,
Since the tool can be downsized compared to the broaching machine, the machine itself can be downsized and the price can be reduced accordingly.
Since tool exchange can be easily performed in a short time, productivity can be improved. In addition, by arranging a plurality of chips in a straight line, the distance between the chips can be reduced, and the indexing time can be shortened. In the case where the chips are replaced while the chips are attached to the processing machine body, the distance between the chips is short, so that the chips can be easily replaced in a short time.

In order to achieve the above object, a second aspect of the present invention is directed to a pair of workpieces which are installed on a bed, hold both ends of a workpiece to be processed by chucks, support the workpiece on a processing axis, and rotate the workpiece. Work drive unit and X
A machining unit movable in the X-axis parallel to the machining axis and in the Y-axis direction orthogonal to the X-axis by the axis drive means and the Y-axis drive means, and a machining unit provided in the machining unit; The tool comprises a tool that is linearly moved in a tangential direction and performs turn broaching and turning of a work.

With the above configuration, a conventional turret lathe,
Since the tool can be downsized compared to the broaching machine, the machine itself can be downsized and the price can be reduced accordingly.
Since tool exchange can be easily performed in a short time, productivity can be improved. In addition, by arranging a plurality of chips in a straight line, the distance between the chips can be reduced, and the indexing time can be shortened. In the case where the chips are replaced while the chips are attached to the processing machine body, the distance between the chips is short, so that the chips can be easily replaced in a short time.

In order to achieve the above object, according to the third aspect of the present invention, the tool can be linearly moved vertically or obliquely vertically by Z-axis driving means.

According to the above configuration, the linear movement of the tool in the Z-axis direction can be performed with high accuracy, so that the machining accuracy is improved.

According to a fourth aspect of the present invention, there is provided a broaching tip for processing a work while moving linearly in a tangential direction of the work, a broaching chip for stopping the linear movement in the tangential direction, and a processing unit. A turning tip for turning a work is provided on a tool while being moved to at least one of the X axis and the Y axis.

According to the above configuration, the machining unit is moved in at least one of the X-axis and the Y-axis while rotating the work, and in addition to the turning work in which the work is turned by the turning tip, the tool is moved in the tangential direction of the work. Then, turn broaching for broaching the work with the broaching tip can be performed by one processing machine, so that the versatility of the machine is improved and the size of the entire machine can be reduced.

In order to achieve the above object, according to the present invention, a tool in which a plurality of turning tips and at least one broaching tip are linearly arranged is moved in a tangential direction of a workpiece. A turning step of turning the workpiece in at least one direction of the X-axis and the Y-axis while rotating the work and positioning the tip for turning to the processing position; A turn broaching process in which after indexing to an axial broaching position, the tool is linearly moved in the tangential direction of the work while rotating the work, and the work is broached with a broaching tip provided on the tool. Are separately or appropriately combined to perform a combined machining of a turning process of a work and a turn broaching process.

According to the above method, turning and turn broaching of a work can be performed by one processing machine, so that there is no need to install a turning machine and a broaching machine, so that equipment costs can be significantly reduced and turning processing can be achieved. And turn broaching can be performed continuously, so productivity is also improved.

[0019]

Embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of the multi-tasking machine, FIG. 2 is a view from an arrow A in FIG. 1, FIG. 3 is an enlarged side view of a tool used in the multi-tasking machine, and FIG. 4 is an arrow from a B direction in FIG. FIG. 5 is a sectional view taken along line CC of FIG. 3, FIG. 6 is a side view showing a modified example of the combined working machine, and FIG. 7 is a front view showing a modified example of the combined working machine.

In these figures, reference numeral 1 denotes a multi-tasking machine main body, which has a bed 1a which is long in the X-axis direction. On this bed 1a, a work drive unit 2 and a tailstock center 3 are separated in the X-axis direction. And movably in the X-axis direction. The work drive unit 2 has X
A main shaft 4 parallel to the shaft is rotatably supported, and a work 5 is attached to an end of the main shaft 4 on the tail stock center 3 side.
A chuck 6 for gripping one end of the main shaft 4 is attached, and a main shaft drive source (not shown) is connected to an end opposite to the main shaft 4 via a power transmission means 7. Is to be rotated.

The tail stock center 3 is provided with a center 3 a on the same axis as the main shaft 4 of the work drive unit 2, and a center 3 a is formed in a center hole (not shown) formed at the other end of the work 5. , The work 5 can be supported on the processing axis a between the chuck 6 and the chuck 6.

On the other hand, reference numeral 8 in the drawing denotes a processing unit which is guided by a guide rail 1b laid on the bed 1a so as to be parallel to the X axis and is movable in the X axis direction. A movable slide base 8a is provided, and a plurality of guide rails 8b are laid on the slide base 8a in a Y-axis direction orthogonal to the X-axis. A column 8c is provided on these guide rails 8b. It is movably supported in the Y-axis direction by a Y-axis driving means not shown.

A plurality of guide rails 8d are laid in the column 8c in the up-down (Z-axis) direction, and a tool rest which can be moved up and down by the Z-axis driving means 10 installed on the column 8c. 11 are supported. The tool 1 for turning the workpiece 5 is provided on the tool rest 11.
2 is detachably attached.

The tool 12 has a structure capable of performing combined processing of turn broaching and turning, and as shown in FIG. 3 to FIG. A plurality of turning inserts 12a and at least one broaching insert 12b are mounted linearly and detachably at intervals in the vertical direction.

Next, a description will be given of a method of performing a combined machining of a turning work and a turn broaching work on an axial workpiece 5 such as a crankshaft by using the above-described combined machining machine. Turning is performed by simultaneously moving the tool 12 in the X-axis or Y-axis direction or the X-axis and Y-axis directions while rotating the work 5, and turning the tool 12 with the turning tip 12 a of the tool 12.
This is mainly used for rough machining of the work 5.

In turn broaching, the tool 12 is moved in the tangential direction of the work 5 while rotating the work 5, and the work 5 is turned broached by at least one broaching tip 12b provided on the tool 12. It is mainly suitable for finishing. Therefore, in the embodiment of the present invention, after roughing the work 5 by turning, the work 5 is finished by turn broaching. Of course, the turning process and the turn broaching process may be performed separately.

When turning the work 5,
First, when the work 5 is carried between the chuck 6 of the work drive unit 2 and the center 3a of the tail stock center 3 by the work transfer means (not shown), one end of the work 5 is gripped by the chuck 6 and the center 3a of the tail stock center 3 is held. Is inserted into the center hole at the other end of the work 5 to support the work 5 on the processing axis a.

Next, the work 5 is driven by the work drive unit 2.
The column 8c of the processing unit 8 is moved to the standby position before processing of the workpiece 5 by at least one of the X-axis and Y-axis driving means while rotating the column 8 in the direction of arrow b shown in FIG.

Next, the tool 12 stopped at the standby position
Is lowered by the Z-axis drive means 10 to position the turning tip 12a attached to the tool 12 at the processing position, and at the same time, the processing unit 8 is moved in the X-axis direction or the Y-axis direction by the X-axis and Y-axis drive means. The workpiece 5 is turned in the direction or the X-axis and Y-axis directions at the same time, and the workpiece 5 is turned by the turning tip 12a.

As a result, the workpiece 5 is roughly machined.
When turning is repeated a plurality of times by changing the turning insert 12a in the roughing, after the first roughing is completed, the tool 12 is moved in the Z-axis direction by the Z-axis driving means 10 to perform the next turning. Turning of the work 3 is performed by the tip 12a.

When the rough machining of the work 5 is completed as described above, the finish machining of the work 5 is performed by turn broaching following the turning machining. Turn broaching is performed by moving the tool 12 in at least one direction of the X-axis and the Y-axis to a predetermined broaching position.
The tool 12 is linearly moved in the tangential direction of the work 5 by the Z-axis driving means 10 while rotating the work 5 on which the rough machining is completed, and the work 5 is moved by at least one broaching tip 12b attached to the tool 12. Turn broaching. Hereinafter, the above operation is repeated to continuously perform turning processing and turn broaching processing at all processing points of the work 5. By attaching a groove processing chip or the like to the tool 12 in advance, the above-described processing step is performed. Groove processing or the like can also be performed.

FIG. 6 shows a modification of the multi-tasking machine, which will be described below. In this modification, a guide rail 8d is laid on the inclined surface of the work 5 of the column 8c as a front downward inclined surface, and the tool post 11 is supported on the guide rail 8d. The tool 12 can be moved up and down along the inclined surface by the Z-axis driving means 10 as in the above embodiment.

In the case of this modification, since the tool 12 must be moved on the radiation at the time of turning, it is necessary to interpolate when the end face of the work 5 is machined, but otherwise, turning and turn broaching are performed. Both are the same as those in the above-described embodiment, and the description thereof is omitted.

In the above embodiment, one end of the work 5 is gripped by the chuck 6 provided on the work drive unit 2,
The other end is supported by the tail stock center 3, and the work 5 is rotated by the work driving means 2. However, as shown in FIG. The work 5 may be rotated by holding both ends of the work 5 between the chucks 6 of the work driving means 2. Further, although not shown, the work 5 may be rotated by vignetting provided on the work drive unit 2 in a state where both ends of the work 5 are supported by the tail stock center 3.

[Brief description of the drawings]

FIG. 1 is a front view of a multi-tasking machine according to an embodiment of the present invention.

FIG. 2 is an arrow view from a direction A in FIG. 1;

FIG. 3 is an enlarged side view of a tool used in the multi-tasking machine according to the embodiment of the present invention.

FIG. 4 is an arrow view from a direction B in FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a side view showing a modified example of the multifunctional processing machine.

FIG. 7 is a front view showing a modified example of the multifunctional processing machine. 1a Bed 2 Work drive unit 3 Tail stock center 5 Work 6 Chuck 8 Processing unit 10 Z-axis drive means a Processing axis 12 Tool 12a Turning tip 12b Broaching tip

Claims (5)

[Claims] 1. A work drive unit (2) installed on a bed (1a) and rotating a work (5) by gripping one end of a work (5) to be processed by a chuck (6); A tail stock center (3) installed on the bed (1a) and supporting the work (5) on the machining axis (a) with the chuck (6) of the work drive unit (2); A driving unit and a Y-axis driving unit, which are provided in the processing unit (8) movable in the X-axis parallel to the processing axis (a) and in the Y-axis direction orthogonal to the X-axis, and the processing unit (8); And Z-axis driving means (1
0), the workpiece (5) is linearly moved in the tangential direction,
A multi-tasking machine comprising: a tool (12) for performing turn broaching and turning of a work (5). 2. A work (5) set on a bed (1a), and both ends of a work (5) to be machined are gripped by chucks (6) and supported on a machining axis (a), and the work (5) is supported. A pair of workpiece drive units (2) to be rotated, and a processing unit (X-axis driving means and Y-axis driving means) capable of moving in the X-axis parallel to the processing axis (a) and the Y-axis direction orthogonal to the X-axis. 8) a tool provided in the machining unit (8) and linearly moved in the tangential direction of the work (5) by the Z-axis driving means (10) to perform turn broaching and turning of the work (5). (12) A multi-tasking machine comprising: 3. A tool (1) is driven by a Z-axis driving means (10).
3. The multi-tasking machine according to claim 1, wherein 2) is movable linearly in a vertical direction or in an oblique vertical direction. 4. A broaching tip (12b) for turn broaching the work (5) while moving linearly in the tangential direction of the work (5), stopping the tangential linear movement of the work (5), and While moving the processing unit (8) to at least one of the X axis and the Y axis, the work (5)
A turning and turn broaching tool provided with a turning tip (12a) for turning a workpiece. 5. A plurality of turning inserts (12a),
A tool (12) in which at least one broaching tip (12b) is linearly arranged is moved in a tangential direction of the work (5), and the turning tip (12a) is positioned at a machining position. Thereafter, while rotating the work (5), the tool (12) is moved in at least one of the X-axis and the Y-axis, and a turning step of turning the work (5) is performed. 5) After indexing to the broaching position in the axial direction, the tool (12) is linearly moved in the tangential direction of the work (5) while rotating the work (5), so that the broach provided on the tool (12) is provided. By separately or appropriately combining the turn broaching step of broaching the work (5) with the processing chip (12b), the turning work of the work (5) and the turn broaching work are combined. Combined machining method characterized in that for machining.