JPH1177404A - Tool post device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the interference of cutting tools and cutters with a main spindle and workpiece without reducing the number of turning cutting tools and rotary cutting tools in a turret. SOLUTION: A turret tool post 30 has a tool post body 31 so as to be driven to move toward a main spindle in the X axis direction, and a turret 32 is provided so as to be driven and turned around its axis CT2 and positioned, and a plurality of tool mounting sections 33 are formed 10 the outer periphery of the turret 32, and one of these tool mounting sections 33 is formed with a turning cutting tool mounting face 33Q and a cutter unit mounting section 33P, and the cutter unit mounting section 33P is arranged on the side opposing to the main spindle on the Z axis direction in relation to the turning cutting tool mounting face 33Q.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0005]

That is, according to a first aspect of the present invention, a work spindle (4) comprising a spindle (5) and a chuck (6) mounted on the spindle (5) is a Z-axis ( CT1)
A headstock (3) rotatably driven around
Bar material supply means (7) capable of supplying a bar material (60) to the work spindle (4), and a tool rest device (30)
In the bar machining lathe (1) having the tool post device (30), the tool post main body (31) is connected to the spindle (5).
And a movable turret (3) in the X-axis direction perpendicular to the Z-axis direction.
2) a turret axis parallel to the Z-axis direction (CT2)
And a plurality of tool mounting portions (33) are formed on an outer peripheral portion of the turret (32), and one of the plurality of tool mounting portions (33) includes:
Turning tool mounting surface (33Q) and bar material cutting means mounting part (3
3P) is formed, and the bar material cutting means mounting portion (33P) is provided with respect to the turning tool mounting surface (33Q).
The main shaft (5) is arranged on the opposite side to the main axis (5) in the Z-axis direction.

According to a second aspect of the present invention, in the tool rest apparatus (30) according to the first aspect, a turning tool (36A) is detachably mounted on the turning tool mounting surface (33Q). A bar material cutting means (37) is detachably mounted on the bar material cutting means mounting part (33P), and the bar material cutting means (37) is attached to the bar material cutting means mounting part (3).
Cutting means main body (37t) detachably attached to 3P)
A cutter (39) is provided on the cutting means main body (37t) so as to be rotatable about a cutter axis (CT3) parallel to the Z-axis direction, and the Z of the cutter (39) is provided. When the cutting edge (39d) closest to the axis (CT1) is moved in the X-axis direction to the position of the Z-axis (CT1), the tool cutting edge (36a) of the turning tool (36A)
The tool cutting edge position (KH) of the turning tool (36A) was set in such a manner that a clearance (CL) in the X-axis direction could be formed between the turning spindle (4A) and the work spindle part (4).

According to a third aspect of the present invention, in the tool rest apparatus (30) according to the first aspect, a turning tool (36A) is detachably mounted on the turning tool mounting surface (33Q). A bar material cutting means (37) is detachably mounted on the bar material cutting means mounting part (33P), and the bar material cutting means (37) is attached to the bar material cutting means mounting part (3).
Cutting means main body (37t) detachably attached to 3P)
A cutter (39) is provided on the cutting means main body (37t) so as to be rotatable around a cutter axis (CT3) parallel to the Z-axis direction, and the cutter (39) and the turning are provided. A work processing space (UIA) is formed between the tool (36A) and the entire length in the Z-axis direction.

According to a fourth aspect of the present invention, in the tool rest apparatus (30) according to the first aspect, the bar material cutting means mounting portion (33P) includes the turret shaft center (CT2).
It is formed in a concave shape toward.

Note that the numbers in parentheses are for convenience of indicating corresponding elements in the drawings, and therefore the present description is not limited to the description on the drawings.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing a bar machining lathe to which a turret tool post as an example of the tool post device according to the present invention is applied, FIG. 2 is a plan sectional view of the turret tool post shown in FIG. 1, and FIG. FIG. 4 is a view showing a state in which tools are arranged on a turret tool post, FIG. 4 is a view showing a state of cutting a bar material, and FIG. 5 is a perspective view showing the entire bar processing lathe shown in FIG. It is.

A bar machining lathe 1 to which an example of a tool rest apparatus according to the present invention is applied is shown in FIGS. 1 and 5 (in FIG. 5, however, the internal mechanism of the bar machining lathe 1 is covered by a cover or the like. In FIGS. 1 to 4, a cover 2 and the like are omitted so that the internal mechanism of the bar processing lathe 1 can be seen. A headstock 3 is provided on the main body 2 so as to be movable and movable in horizontal arrows A and B directions (Z-axis direction) on the main body 2 via a predetermined moving drive mechanism (not shown). The headstock 3 is provided with a main shaft 5 that is rotatable around an axis CT1 that is the Z axis, and a chuck 6 is provided at a front end (an end on the arrow B side) of the main shaft 5. The main shaft 5 and the chuck 6 constitute a work main shaft portion 4.

A bar material supply table 7 is provided on the main body 2 in front of the headstock 3 (arrow B side), as shown in FIG. It comprises a movable base 10. The fixed base portion 9 is fixedly mounted on the main body 2 in front of the main shaft 5 (that is, on the arrow B side of the main shaft 5), and the movable base portion 10 is fixed on the main shaft 5 side of the fixed base portion 9 (the arrow A side). ). The movable base 10 is movable in such a manner that it can approach / retreat in a direction parallel to the Z-axis direction with respect to the fixed base 9. Driving means including an actuator 10a is provided between the fixed base 9 and the movable base 10.
With this driving means, the movable base portion 10 moves the arrows A and B with respect to the fixed base portion 9 in a direction parallel to the axis direction of the main shaft.
It can be moved and driven in any direction. The movable base portion 10 is provided with two guide bars 9a, 9a projecting in the direction of arrow B, that is, parallel to the Z-axis direction. These guide bars 9a, 9a are formed on the fixed base portion 9. Guide sliding holes 9b, 9b are slidably fitted.

The fixed base portion 9 and the movable base portion 10 are provided with bar material support rails 11 extending in the direction of arrow B. On the bar material support rail 11, a V-shaped groove is formed by an arrow A. , B direction. That is,
The bar material 60 can be placed on the bar material support rail 11 via this groove. Also, the bar support rail 11
Are a fixed portion 11a formed on the fixed base portion 9 side (that is, a part of the fixed base portion 9) and a movable portion 11b formed on the movable base portion 10 side (that is, the movable base portion 10). Of the fixing portion 11)
a between the movable part 11a and the fixed part 11a.
Are separated from each other so as to be able to approach and retreat in the directions of arrows A and B.

Further, the bar material 60 placed on the bar material support rail 11 is disposed on the movable base portion 10 so as to be disposed on the tip side (arrow A side) of the movable portion 11b of the bar material support rail 11. A bar clamp unit 12 that can be freely clamped and unclamped is provided, and a reversing device 13 such as a known handling robot is provided at a position on the arrow A side of the movable base portion 10 further than the bar clamp unit 12.
Is provided. The reversing device 13 includes the movable base 10.
In contrast, an apparatus body 13a rotatably pivoted in directions of arrows E and F around an axis CT11 parallel to the directions of arrows A and B (Z-axis direction) in the figure, and an axis attached to the apparatus body 13a. Heart C
It is composed of a clamp member 13b provided rotatably in the directions of arrows G and H about an axis CT12 perpendicular to T11.

A turret tool post 30 which is an example of a tool post device according to the present invention is provided in the main body 2 on the upper right side of the headstock 3 in FIG. Arrows C and D perpendicular to the directions of arrows A and B (Z-axis direction) in the figure via a predetermined movement driving mechanism (not shown).
Turret body 31 so that it can be moved and driven in the direction (X-axis direction)
have. The tool rest main body 31 has arrows I and J centered on an axis CT2 parallel to the arrows A and B directions (Z-axis direction) in the figure.
The turret 32 is provided so as to be freely rotatable in the direction, and FIG. 3 is provided on the outer peripheral side of the turret 32 (a cross-sectional portion of the turret 32 in FIG. 3 is shown with its details omitted). As shown in FIG. 2, a plurality of tool mounting portions 33 are formed in a line at substantially equal angular pitch intervals around the axis CT2. A rotating tool 35 such as a drill and a milling cutter or a turning tool 36 such as a cutting tool is provided in each tool mounting portion 33.
Is detachably mounted.

By the way, the plurality of tool mounting portions 33 described above are used.
Among the specific one of the tool mounting portions 33 (hereinafter, when this specific tool mounting portion 33 is distinguished from the other tool mounting portion 33, it is referred to as “tool mounting portion 33A”).
As shown in FIG. 2 (note that the rotary tool 35 and the turning tool 36 in FIG. 2 show a side surface instead of a cross section)
A turning tool mounting surface 33Q is formed which has a smaller width in the directions of arrows A and B than the other tool mounting portions 33, and which is shifted toward the arrow A side in the figure (that is, toward the headstock 3 side). . Therefore, the turning tool 36 mounted on the turning tool mounting surface 33Q is smaller than the turning tool 36 mounted on the other tool mounting portion 33. The turning tool 35 cannot be mounted on the turning tool mounting surface 33Q (hereinafter, when distinguishing the small turning tool 36 mounted on the turning tool mounting surface 33Q from other turning tools 36, " Turning tool 36A ").

On the other hand, in the tool mounting portion 33A, the cutter unit mounting portion 3 is located at a position adjacent to the above-mentioned turning tool mounting surface 33Q on the arrow B side (ie, the side opposite to the main shaft 5).
3P is formed, and the cutter unit mounting portion 33 is formed.
P is formed so as to be depressed from the position on the outer periphery of the turret 32 (that is, the position on the periphery where the other tool mounting portion 33 is disposed) toward the axis CT2, and the right side of the turret 32 in FIG. That is, it is formed over the position of the side portion 32d on the side opposite to the headstock 3 (that is, the position closer to the axis CT2 than the other tool mounting portions 33). A cutter unit 37 is detachably attached to the cutter unit attachment portion 33P, and the cutter unit 37 has a casing. The casing 38 has a substantially L-shaped cross section as shown in FIG. That is, the casing 38 is moved from the cutter unit mounting portion 33P to the arrow B side (that is, the main shaft 5).
And the front side thereof is bent at a substantially right angle, and protrudes in the radial direction from the axis CT2.
In the vicinity of the tip of the casing 38 projecting in the radial direction from the axis CT2, a disk-shaped cutter 39 disposed on the arrow A side (the main shaft 5 side) of the casing 38 is provided.
It is mounted so as to be rotatable in the directions of arrows K and L about an axis CT3 parallel to the directions of arrows A and B (Z-axis direction) in the figure.

As shown in FIG. 2, the turret 32 is provided with a hollow turret support shaft 32a projecting in the direction of arrow A in the figure.
Is rotatably supported by the tool rest main body 31 so as to be rotatable in the directions of arrows I and J about the axis CT2. Turret support shaft 32
A sleeve 34 is disposed in a shape in which rotation around the axis CT2 is restricted with respect to the tool rest main body 31. In the sleeve 34, a main shaft 42 is provided with respect to the tool rest main body 31 and the sleeve 34. It is disposed so as to be rotatable about the axis CT2 in the directions of arrows I and J. A cylinder portion 43 is formed in the tool rest main body 31 so as to extend in parallel with the axis CT2. A piston portion 32b is provided on the outer peripheral side of the turret support shaft 32a. It is formed so as to be fitted and movably driven in directions A and B (Z-axis direction).

The turret 32 of the tool rest main body 31
A main body side meshing portion 45 formed of a plurality of protrusions protruding in the direction of arrow B in the figure is formed in an annular shape in a portion adjacent to the tool turret 32. The turret-side meshing portion 46 formed of a plurality of protrusions protruding in the direction of arrow A of FIG. The projection of the main body side meshing portion 45 and the projection of the turret side meshing portion 46 are:
Both are formed at an equal angular pitch around the axis CT2. In the state shown in FIG. 2, the main body side meshing portion 45 and the turret side meshing portion 46 are meshed with each other.

On the other hand, a motor 40 is provided on the tool rest main body 31 side. As shown in FIG. 2, the motor 40 has the main shaft 42 supported by the tool rest main body 31 and the like. It is rotatably connected via a first transmission means 41 comprising a pulley and a pulley. Further, an output gear 47 is provided on the main shaft 42. A shaft 50 is rotatably supported by the tool rest main body 31, and an input gear 49 is moved to the left end of the shaft 50 in the drawing by an actuator 54 in the directions of arrows A and B which are the axial directions of the shaft 50. It is provided so that it can be driven freely. The input gear 49 is freely meshed with and released from the output gear 47. A turret drive gear 32c is concentrically mounted on the outer peripheral side of the turret support shaft 32a, and the above-described shaft 50 meshes with the turret drive gear 32c.

The distal end side (arrow B side in the figure) of the main shaft 42 reaches the inside of the turret 32 through the inside of the sleeve 42 (the interior of the turret 32 is hollow). A bevel gear 51 is provided. Further, a clutch 52 is provided on the distal end side of the sleeve 42 in a form fixedly supported on the tool post main body 31 side (note that in FIG.
The two parts are separately shown by breaking lines, and the connection state is shown for the part on the left side of the drawing in the drawing, and the disconnected state is shown for the part on the right side of the drawing in the drawing).
2 is a sleeve 4 around an axis CT4 parallel to the X-axis direction.
2 has a bevel gear 55 rotatably supported with respect to 2 in a form engaged with the bevel gear 51. The bevel gear 55 has a sliding shaft 56 rotatable about the axis CT4 together with the bevel gear 55, and is connected to the bevel gear 55 by well-known intermittent driving means 57 such as a hydraulic cylinder / piston and a return spring. The slide shaft 56 is provided so as to be able to protrude and retreat in a direction indicated by arrows D and C over a predetermined stroke, and an engagement portion 56 a is formed on the distal end side (arrow D side) of the slide shaft 56.

Each tool mounting portion 33 of the turret 32
A drive shaft installation hole 20 that penetrates the inside and outside of the turret 32 in a radial direction about the axis CT2 is formed in the (except for the tool mounting portion 33A). The drive shaft 35 a of the tool 35 is inserted into the drive shaft installation hole 20 and arranged. Each rotary tool 35 is rotatably driven via a known power transmission mechanism (not shown) by rotating the drive shaft 35a. And the drive shaft 35a
An engagement portion 35b that can engage with the engagement portion 56a of the clutch 52 described above is formed at the tip (the tip on the side of the shaft center CT2).

The casing 38 of the cutter unit 37 is mounted on the cutter unit mounting portion 33P of the turret 32 as described above, and the casing 38 extends in the radial direction about the axis CT2. A drive shaft 39a is rotatably supported on the shaft. The distal end of the drive shaft 39a (the distal end on the side of the shaft center CT2) has an engaging portion 3 which can be engaged with the engaging portion 56a of the clutch 52 described above.
9b (the engaging portion 39b and the above-described engaging portion 35b of the rotary tool 35 are both formed on the shaft center CT2).
Are arranged on the circumference around the center). On the other hand, a rotating shaft 39c, on which the above-mentioned cutter 39 is mounted, is rotatably supported on the casing 38 in the directions of the arrows K and L around the axis CT3 together with the cutter 39, and rotates with the drive shaft 39a. A drive transmission unit 37a including a bevel gear, a shaft, a gear train, and the like is connected between the shafts 39c so as to freely transmit power from the drive shaft 39a to the rotation shaft 39c. The casing 38, the drive shaft 39a, the rotating shaft 39c, and the drive transmission means 37a provided thereon are provided with a cutter unit main body 37 serving as a cutting means main body.
t.

Since the bar processing lathe 1 has the above-described configuration, the bar processing lathe 1 is used to form a long bar 6.
In order to process No. 0, first, the bar material 60 is placed on the bar material support rail 11 (at this time, the movable base portion 10 of the bar material supply table 7 is the evacuation unit (not shown) closest to the fixed base portion 9). Position). The bar material 60 to be placed is disposed in such a manner that the tip 60a side of the headstock 3 is passed through the bar clamp unit 12. Thereafter, the bar material 60 is clamped by the bar clamp unit 12. Thus, the placed bar member 60 is arranged concentrically with respect to the axis CT1 of the main shaft 5. At this time, since the bar material supply table 7 for positioning the bar material 60 with respect to the main shaft 5 is provided so as to be mounted on the main body 2 of the bar material processing lathe 1, it has extremely high rigidity. Even if it is placed on the material supply table 7, there is no danger of misalignment or the like due to the weight of the bar material 60.

Next, the movable base 1 of the bar supply table 7
As shown in FIG. 1, the fixed base unit 9 is driven to move to a predetermined transfer position in the direction of arrow A by a driving means such as an actuator 10 a as shown in FIG. Since the bar material 60 placed on the bar material support rail 11 is clamped by the bar clamp unit 12 on the tip end 60a side, the bar material 60 moves in the direction of arrow A with the movement of the movable base unit 10, and the turret. It is conveyed to the processing area KR on the side (arrow D side) of No. 32 (shown by a two-dot chain line in FIG. 1). On the other hand, the headstock 3 is moved and driven in the direction of arrow B to
Thereby, the tip 60a side of the bar member 60 is gripped. By the way, when the movable base 10 moves with respect to the fixed base 9, the guide bars 9a, 9a fitted in the guide sliding holes 9b, 9b of the fixed base 9 are guided in the Z-axis direction. Therefore, when the movable base 10 moves,
Inadvertent displacement in a direction perpendicular to the axial direction or the like does not occur. In other words, since the movable base 10 and the fixed base 9 are integrated so as to maintain alignment in the Z-axis direction, the movable base 10 is clamped by the bar clamp unit 12 on the movable base 10 and the rear end is clamped. Fixed side 1 of bar support rail 11 on base side 9
Even if the bar member 60 is moved in a state where the bar member 60 is placed on the main shaft 1a, the bar member 60 is advantageous without causing misalignment with respect to the axis CT1 of the main shaft 5.

Next, after the bar material 60 is once unclamped by the bar clamp unit 12, the headstock 3 is moved to a predetermined position in the direction of arrow A as shown in FIG.
Thus, the bar member 60 gripped by the chuck 6 of the main shaft 5 passes through the bar clamp unit 12 and slides out in the direction of arrow A, and moves in the direction of arrow A with the movement of the main shaft 5. After the movement of the headstock 3 and the bar member 60 is completed,
The bar material 60 is clamped again by the bar clamp unit 12.

On the other hand, in the turret tool post 30, the cutter unit 37 in the turret 32 is indexed. That is, in the cylinder part 43, the piston part 32b is
The turret 32 is moved in the direction of arrow B with respect to the tool post main body 31 by moving the turret 32 in the direction, and the engagement between the turret side meshing portion 46 and the main body side meshing portion 45 is released. Then, the input gear 49 is moved to the arrow B by the actuator 54.
The main shaft 42 is driven to move to the side (shown by a two-dot chain line in FIG. 2) and mesh with the output gear 47 of the main shaft 42. Subsequently, the motor 40 is rotated at a low speed, the main shaft 42 is rotationally driven by the motor 40 via the first transmission means 41, and the power from the main shaft 42 is transmitted via the output gear 47 and the input gear 49. To the shaft 50, and the turret support shaft 32a and the turret 32 are rotated around the axis CT2 via the turret drive gear 32c meshed with the shaft 50. By this rotation drive, the turret 32
The cutter unit 37 mounted on the camera is moved to a predetermined use position UP.
In this embodiment, the turret 32 is stopped at the position (projected downward from the axis CT2 in FIG. 2) and the rotation of the turret 32 is stopped. At this time, the input gear 49 is driven to move in the direction of arrow A to disengage the output gear 47 of the main shaft 42 from engagement. Next, the turret 32 is moved in the direction of the arrow A with respect to the tool rest main body 31 by moving the piston portion 32b in the direction of the arrow A in the cylinder portion 43, and the turret side meshing portion 46 and the main body side meshing portion 45 are moved. Engage and engage. As a result, the turret 32 is positioned at a predetermined position, and the indexing of the cutter unit 37 is completed.

Thereafter, in the clutch 52, the sliding shaft 56 is driven to protrude in the direction of arrow D via the intermittent driving means 57. Thereby, the engaging portion 56a of the sliding shaft 56 is engaged with the engaging portion 39b of the drive shaft 39a of the cutter unit 37 disposed at the use position UP. Subsequently, the main shaft 42 is rotationally driven by the motor 40 via the first transmission means 41, and the power from the main shaft 42 is transmitted to the sliding shaft 56 via the bevel gears 51 and 55 to move the sliding shaft 56 to the shaft center CT4.
The rotation is transmitted around Further, the sliding shaft 5
6 is transmitted to the driving shaft 39a of the cutter unit 37 engaged via the engaging portions 56a and 39b, and transmitted from the driving shaft 39a to the rotating shaft 39c via the driving force transmitting means 37a. Thus, the rotating shaft 39
When c is rotationally driven, the cutter 39 provided on the rotating shaft 39c is rotationally driven about the axis CT3. As described above, according to the drive mechanism of the turret tool rest 30 shown in the present embodiment, the rotational drive of the cutter 39, the rotational drive of the turret 32 described above, and in addition to these, the rotational drive of the rotary tool 35 described later are all performed. Since one motor 40 is used as a power source, the size and size of the machine can be reduced and simplified compared to a case where a separate motor or the like is provided.

Thereafter, the turret tool rest 30 is moved and driven in the direction of arrow D which is the X-axis direction (the direction toward the bar material supply stand 7). Thereby, the cutter 3 being driven to rotate is
Reference numeral 9 denotes the chuck 6 of the bar material 60 as shown in FIG.
Is sent in the direction of arrow D (approaching in the X-axis direction with respect to the axis CT1) with respect to a predetermined cutting position between the and the bar clamp unit 12. In this manner, the cutter 39 is further fed in the direction of the arrow D with respect to the bar member 60 to thereby reduce the bar member 6.
Cut 0. As a cutting method, the bar material 60 is switched by changing the clamp pressure of the bar clamp unit 12 to a low pressure.
May be rotatable, and the cutter 39 may be rotationally driven to cut the bar material 60 while the main shaft 5 and the bar material 60 are rotated at a low speed by C-axis control (or constant-speed rotation speed control). Good. Further, for example, the bar member 60 may be cut by appropriately changing the direction of the bar member 60 with respect to the cutter 39 by the spindle index.

In this embodiment, as shown in FIG. 4, the cutting edge 3 of the cutter 39 is used to cut the bar material 60.
9d, the position closest to the Z-axis, which is the axis CT1 (the position at the lower end of the paper surface of FIG. 4), is set in the direction of arrow D, that is, in the direction toward the axis CT1 in the X-axis direction. Predetermined cutter feed position CP exceeding the coincident axis center CT1
(Position on the X-axis). (Note that
The bar material 60 can be cut if the cutter feed position CP is beyond the axis CT1 or at a position coinciding with the axis CT1. Therefore, as another example, the cutter feed position CP may be a position on the X axis that coincides with the axis CT1. ) The axis C of the blade tip 39d of the cutter 39
In a state where the position closest to the Z axis which is T1 is sent to the cutter feed position CP, the tool edge position of the cutting edge 36a of the turning tool 36A located on the arrow A side of the cutter unit 37 (that is, the headstock 3 side). The KH is located at the tool approach position KP which is closest to the main shaft 5 or the chuck 6 of the main shaft 5, that is, the work main shaft portion 4 in the X-axis direction.
However, the turning tool 36A forms a clearance CL in the X-axis direction between the cutting edge 36a of the turning tool 36A and the main shaft 5 or the chuck 6, as shown in FIG. The tool edge position K
H is set. (Accordingly, if the cutter feed position CP is a position on the X-axis that coincides with the axis CT1 as in the above-described another example in parentheses, the clearance CL formed here is further secured. That is, at the time of cutting the bar member 60, for example, the work spindle 4 is advanced toward the turret tool post 30 (in the direction of arrow B), and the work spindle is moved forward (arrow D side) of the turning tool 36A. Even when the part 4 exists, the turning tool 36A
Does not interfere with the work spindle portion 4 (that is, the spindle 5 or the chuck 6) (of course, does not interfere with the bar member 60 having a smaller diameter than the chuck 6), so that the bar member 60 can be cut smoothly without any trouble.

As described above, the bar supply table 7 including the fixed base 9, the movable base 10, the bar support rail 11, and the like is provided integrally with the extremely rigid main body 2, so that the rigidity is high. high. Therefore, the bar support rail 11
The bar material 60 supported by, for example, vibrates with respect to the headstock 3 and the turret tool post 30 due to vibrations during operation, and the accuracy of cutting and processing is impaired, and the bar material supply table 7 is aligned with the main shaft 5. It is convenient to prevent occurrence of a situation where the user goes crazy.

In this manner, as shown in FIG. 1, when the work 62 cut out to a predetermined length from the long bar material 60 is held by the chuck 6 of the main shaft 5 (note that the bar material 60 Of the remaining parts other than the work 62,
The new bar material 60 to be cut next is clamped by the bar clamp unit 12), and the movable base portion 10 of the bar material supply table 7 is fixed to the fixed base portion 9 in the above-described predetermined direction in the arrow B direction. Move to the retreat position. As a result, the movable base portion 10 of the bar supply table 7 and the remaining bar 60 are retracted from the processing region KR in front of the main shaft 5.

Thereafter, the work 62 held by the chuck 6 of the spindle 5 is processed. First, a tool is indexed in the turret 32. This is the cutter unit 37 described above.
Is basically performed in the same procedure as the indexing. That is, the turret 32 is moved from the tool post main body 31 in the direction of arrow B to release the engagement between the turret side meshing portion 46 and the main body side meshing portion 45, and the turret 32 is driven to rotate about the axis CT2. I do. By this rotation drive, a desired tool among the rotary tool 35 or the turning tool 36 mounted on the turret 32 is indexed and arranged at a predetermined use position UP. Thereafter, the turret 32 is moved in the direction of the arrow A toward the tool rest main body 31, and the desired tool is positioned by meshing and engaging the turret side meshing portion 46 and the main body side meshing portion 45,
The indexing of the tool in the turret 32 is completed.

When the desired tool positioned at the use position UP is the rotary tool 35, after the indexing of the tool, the slide shaft 56 is driven to protrude by the clutch 52 via the intermittent drive means 57. And the engaging portion 5 of the sliding shaft 56
6a is engaged with the engaging portion 35b of the drive shaft 35a of the rotary tool 35 disposed at the use position UP. Thereby, the power from the main shaft 42 is transmitted to the bevel gear 5.
1, transmitted through a bevel gear 55 and a sliding shaft 56 to a drive shaft 35a of the rotary tool 35, and the tool edge of the rotary tool 35 is rotationally driven.

Thereafter, the turret tool rest 30 is moved in the direction indicated by arrows C and D.
By appropriately moving and driving in the direction (X-axis direction), the headstock 3 is appropriately moved and driven in the directions of arrows A and B (Z-axis direction), and the main shaft 5 is appropriately rotated and driven (or C-axis control or the like). The work 62 is cut by the indexed tool. Thereafter, the above-described indexing of the tool and the cutting by the indexed tool are repeated, and the first process is performed on the work 62 gripped by the main shaft 5. When the processing in the first step is completed, the reversing device 13 is swung in the direction of arrow E about the axis CT11, the headstock 3 is moved and driven in the direction of arrow B, and the movable base of the bar material supply table 7 is moved. 10 is driven in the direction of arrow A to drive the clamping member 1 of the reversing device 13.
3b, the workpiece 62 is gripped, the chuck 6 is unclamped, the headstock 3 is retracted in the direction of arrow A, and the clamp member 13b is rotated 180 degrees in the direction of arrow H, thereby completing the processing in the first step. The work 62 is reversed. Next, the headstock 3 is once moved in the direction of arrow B to grip the inverted work 62 by the chuck 6, and the clamp of the work 62 by the clamp member 13b is released.
The reversing device 13 is moved and retracted together with the movable base 10 in the direction of arrow B. (Note that while the reversing device 13 is not used, such as when processing the work 62 or cutting the bar material 60, the device main body 13a of the reversing device 13 is moved in the direction of the arrow F in the direction of the axis CT11.
Are arranged in the front of FIG. 1 so as not to interfere with the work 62 and the bar material 60).

Subsequently, in the same manner as described above, the indexing of the tool and the cutting by the indexed tool are repeated, and the work 62 gripped by the spindle 5 is processed in the second step. In this way, the processed work 62 having been processed in the first step and the second step in the main shaft 5 is transferred from the chuck 6 of the main shaft 5 to a carry-out conveyor (not shown) by the reversing device 13 or the like.

In the turret 32 of the turret tool rest 30 described in this embodiment, since both the turning tool 36A and the cutter unit 37 are mounted on one tool mounting portion 33A, the outer peripheral portion of the turret 32 , Cutter unit 3
Regardless of the mounting of 7, the turning tools 36 and the rotating tools 35 as many as the number of the tool mounting portions 33 can be mounted. In other words, mounting the cutter unit 37 is advantageous because the number of tools that can be mounted does not decrease. Further, space can be saved as compared with the case where the mounting portion of the cutter unit 37 is separately provided in a portion other than the tool mounting portion 33A, and the overall size of the turret tool post can be reduced.

When the processed work 62 is carried out of the chuck 6 of the main shaft 5, the next work is performed in the same manner as described above. That is, the bar clamp unit 12 is
The movable base portion 10 of the bar material supply table 7 is moved and moved to the transfer position HP in the direction of arrow A while the tip of the bar is held, and the headstock 3 is moved and driven in the direction of arrow B. After the tip 60a side of the bar 60 is gripped, the bar member 60 is released from the clamped state of the bar member 60, and the headstock 3 is moved and driven in the direction of arrow A to move the bar material 60 in the direction of arrow A. . on the other hand,
The bar unit 60 is cut by the cutter 39 by indexing the cutter unit 37 on the turret tool post 30 side, rotating and driving the cutter 39, and moving and driving the turret tool post 30 in the direction of arrow D. When the work 62 having a predetermined length is cut out from the long bar material 60 in this way, the movable base 10 of the bar material supply table 7 is retracted together with the bar material 60 in the direction of arrow B to the retreat position TP. Thereafter, the processing of the work 62 gripped by the chuck 6 of the spindle 5 is performed in the first step, similarly to the procedure already described.
Perform in the order of the second step. By repeating these series of procedures, a work 62 having a predetermined length is formed from the long bar material 60.
Are sequentially cut out, and processing of each work 62 is sequentially performed.

As described above, the cutter unit mounting portion 33P is recessed from the outer peripheral side of the turret 32 to the position of the side portion 32d, that is, the position closer to the axis CT2 than the other tool mounting portions 33. The cutter unit 3 is thus formed, and is thus mounted on the cutter unit mounting portion 33P.
Reference numeral 7 is arranged at a position as close as possible to the axis CT2. That is, the cutter unit 37 is arranged as close as possible to the axis CT2, and the turning radius D of the entire turret 32 is correspondingly increased.
1 (shown in FIG. 2) is as small as possible. This is extremely effective because the turning radius D1 of the entire turret 32 can be reduced even when the diameter of the bar member 60 is increased and the cutter 39 is enlarged. This also prevents the cutter 39 or the like at the tip of the cutter unit 37 from inadvertently contacting other parts of the machine when the turret 32 rotates or the like, which is also safe. Further, the casing 38 of the cutter unit 37 is
Since it protrudes from P to the arrow B side (that is, the side opposite to the main shaft 5 in the X-axis direction), the vicinity of the tip of the casing 38 and the position of the cutter 39 are shifted to the arrow B side (ie, the side opposite to the main shaft 5 in the X-axis direction). ). That is, the arrow A side of the cutter unit 37 (that is, the main shaft 5 side)
A non-interference space UIA, which is a space for turning, is provided between the turning tool 36A and the cutter 39 disposed over the entire length in the Z-axis direction (that is, the cutter 39 is attached to the arrow A side of the casing 38). Since there is no obstacle between the turning tool 36A and the cutter 39), the work 62 is particularly formed when the turning tool 36A is used to machine the work 62 as shown in FIG. In addition, the work 62 (shown by a two-dot chain line) does not interfere with the cutter 39 or the like, which is convenient.

In the above-described embodiment, the reversing device 13 is provided on the movable base 10 of the bar supply table 7.
As another embodiment, for example, the turret 32 may be mounted using the tool mounting portion 33 or the like. In this case, the clamp member 13b and the like of the reversing device 13 may be driven in the same manner as the drive of the rotary tool 35 in the above-described embodiment.

[0041]

That is, the first aspect of the present invention is the main shaft 5
A work spindle such as a work spindle 4 including a spindle such as a chuck 6 mounted on the spindle and the like has a spindle CT1.
A headstock such as a headstock 3 rotatably provided about the Z axis, and a bar material such as a bar material supply table 7 capable of supplying a bar material such as a bar material 60 to the work spindle portion. In a bar machining lathe such as a bar machining lathe 1 having a supply means and a tool rest apparatus such as a turret tool rest 30, the tool rest apparatus moves a tool rest body such as a tool rest body 31 with respect to the spindle. The turret such as the turret 32 is mounted on the tool rest body with the turret axis centered on the turret axis such as the axis CT2 parallel to the Z-axis direction. And a plurality of tool mounting portions such as a plurality of tool mounting portions 33 are formed on an outer peripheral portion of the turret, and one of the plurality of tool mounting portions has a turning tool mounting surface 33Q or the like. Turning tool mounting surface and cutter unit mounting part 33P etc. Material cutting means and mounting portion is formed, said bar material cutting unit mounting portion, relative to the turning tool attachment surface configured to arranged on the opposite side to the main axis in the Z axis direction. Therefore, both the bar material cutting means and the turning tool can be mounted on the one tool mounting portion. In other words, the number of turning tools and rotating tools in the turret can be set on the outer peripheral portion of the turret, regardless of the mounting of the bar material cutting means. It is convenient without reducing. Furthermore, space can be saved as compared with a case where the mounting portion of the bar material cutting means is separately provided in a portion other than the tool mounting portion, and the overall size of the tool rest apparatus can be reduced. Further, since the bar material cutting means mounting portion is disposed on the opposite side of the turning tool mounting surface from the main spindle in the Z-axis direction, the work held on the main spindle by the turning tool mounted on the turning tool mounting surface. When processing the bar material cutting means mounted on the bar material cutting means mounting part is less likely to interfere with the spindle, work, etc.
Processing is smooth and convenient.

According to a second aspect of the present invention, in the tool rest apparatus according to the first aspect, a turning tool such as a turning tool 36A is detachably mounted on the turning tool mounting surface, and is provided.
A bar material cutting means such as a cutter unit 37 is detachably mounted on the bar material cutting means mounting portion, and the bar material cutting device is detachably mounted on the bar material cutting device mounting portion. Etc., and the cutting means main body has an axis C parallel to the Z-axis direction.
A cutter such as a cutter 39 is provided so as to be rotatable about a cutter axis center such as T3, and a cutting edge such as a cutting edge 39d closest to the Z axis of the cutter is moved along the Z axis in the X axis direction. When moved to the position, the cutting edge 3 of the turning tool
Since the tool edge position such as the tool edge position KH of the turning tool is set in such a manner that a clearance such as the clearance CL in the X-axis direction can be formed between the tool edge such as 6a and the work spindle portion, the first invention In addition to the effects of
For example, at the time of cutting the bar material, even when the work spindle is advancing toward the tool post apparatus and the work spindle is present at the tip of the turning tool, the turning tool interferes with the work spindle. The bar material can be cut smoothly without any trouble.

According to a third aspect of the present invention, in the tool rest apparatus according to the first aspect, a turning tool is detachably mounted on the turning tool mounting surface, and a bar is mounted on the bar material cutting means mounting portion. The bar material cutting means is provided detachably mounted, the bar material cutting means has a cutting means main body detachably mounted on the bar material cutting means mounting portion, and the cutting means main body is provided in the Z axis direction. A cutter is provided so as to be rotatable around a parallel cutter axis, and a non-interference space UIA is provided between the cutter and the turning tool over the entire length in the Z-axis direction.
Since a work processing space such as that described above is formed, processing of a work held on the work spindle by the turning tool is performed through the work processing space. Therefore, in addition to the effect of the first aspect, the tip of the work does not need to interfere with the cutter or the like at the time of processing, so that the processing can be performed smoothly.

According to a fourth aspect of the present invention, in the tool rest apparatus according to the first aspect, the bar material cutting means mounting portion is formed in a concave shape toward the turret axis. The bar material cutting means mounted on the bar material cutting means mounting portion is disposed as close to the turret axis as possible. Accordingly, since the turning radius of the entire turret is correspondingly reduced, in addition to the effect of the first aspect, even when the diameter of the bar material to be cut becomes large and the cutter becomes large, for example, the turning radius of the entire turret becomes large. Can be reduced in size, which is effective. This also prevents the cutting edge of the cutter from inadvertently contacting other parts of the machine, such as when the turret rotates, and is also safe.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a bar machining lathe to which a turret tool post as an example of a tool post device according to the present invention is applied.

FIG. 2 is a plan sectional view of the turret tool rest shown in FIG. 1;

FIG. 3 is a diagram showing an arrangement state of tools on a turret tool post;

FIG. 4 is a diagram showing a state in which a bar material is being cut.

FIG. 5 is a perspective view showing the entire bar processing lathe shown in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lathe bar processing lathe 3 ... Headstock 4 ... Work spindle part 5 ... Spindle 6 ... Chuck 7 ... Bar material supply means (bar material supply table) 30 ... Tool post device (turret tool post) 31 turret main body 32 turret 33 tool mounting part 33P bar material cutting means mounting part (cutter unit mounting part) 33Q turning tool mounting surface 36a tool cutting edge (edge) 36A turning Tool 37 ... Bar material cutting means (cutter unit) 37t ... Cutting means body (cutter unit body) 39 ... Cutter 39d ... Cutting edge 60 ... Bar material CL ... Clearance CT1 ... Z axis (axis) CT2 ... Turret axis (axis) CT3 ... Cutter axis (axis) KH ... Tool edge position UIA ... Workpiece machining space (non-interference space)

Claims (4)

[Claims] 1. A headstock having a work spindle comprising a spindle and a chuck mounted on the spindle so as to be rotatable about a Z-axis, and a bar capable of supplying a bar material to the work spindle. In a bar processing lathe having a material supply unit and a tool rest device, the tool rest device is configured so that a tool rest main body can be moved and driven in an X-axis direction perpendicular to the Z-axis direction with respect to the main axis. A turret is provided on the tool rest main body so as to be rotatable and positionable about a turret axis parallel to the Z-axis direction, and a plurality of tool mounting portions are formed on an outer peripheral portion of the turret; In one of the tool mounting portions, a turning tool mounting surface and a bar material cutting means mounting portion are formed, and the bar material cutting means mounting portion is arranged in the Z-axis direction with respect to the turning tool mounting surface. Arranged on the opposite side of the main shaft The tool rest apparatus. 2. A turning tool is removably mounted on the turning tool mounting surface, and a bar material cutting means is removably mounted on the bar material cutting means mounting portion. A cutting means main body removably mounted on the bar material cutting means mounting portion; a cutter provided on the cutting means main body so as to be rotatable around a cutter axis parallel to the Z-axis direction; When the edge of the cutter closest to the Z-axis is moved in the X-axis direction to the position of the Z-axis, the clearance in the X-axis direction between the tool edge of the turning tool and the work spindle portion is reduced. The tool post device according to claim 1, wherein a tool edge position of the turning tool is set in a form that can be formed. 3. A turning tool is detachably mounted on the turning tool mounting surface, and a bar cutting means is removably mounted on the bar cutting means mounting portion. A cutting means main body removably mounted on the bar material cutting means mounting portion; a cutter provided on the cutting means main body so as to be rotatable around a cutter axis parallel to the Z-axis direction; 2. The tool rest apparatus according to claim 1, wherein a work machining space is formed between the cutter and the turning tool over the entire length in the Z-axis direction. 4. The tool rest apparatus according to claim 1, wherein said bar material cutting means mounting portion is formed so as to be concave toward the turret axis. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool rest apparatus used in a bar machining lathe for machining a long bar while cutting the bar into a predetermined length. 2. Description of the Related Art Conventionally, as a lathe used for processing a long bar material, a bar material processing lathe disclosed in Japanese Patent Application Laid-Open No. Hei 5-57505 is known. In such a bar machining lathe, a turret of a turret tool rest is provided with a disk-shaped cutter for cutting a bar material in addition to a normal turning tool, a rotary tool, and the like so as to be rotatable. [0003] However, in the turret tool rest of the conventional bar machining lathe as described above, a cutter is provided on the turret, so that a mounting space for a turning tool, a rotary tool and the like is correspondingly increased. This is inconvenient because the number of attachment points of turning tools and rotating tools must be reduced as compared with the case where a cutter is not provided on the turret. In addition, when cutting the bar material or processing the work, it is necessary to take measures to prevent an unused tool or cutter from interfering with the main shaft or the work. In view of the above circumstances, the present invention is convenient without reducing the number of mounting tools such as turning tools and rotating tools in a turret, and is not used when cutting bar materials or machining a workpiece. An object of the present invention is to provide a convenient tool rest apparatus in which a cutter, a cutter, or the like does not interfere with a spindle, a work, or the like.