JPS59129641A - Loader apparatus - Google Patents

Abstract

PURPOSE:To minimize an exclusive driving part of a loader apparatus itself, to lower its cost and to make it small-sized, by allowing a loader arm having a gripper for gripping a work to be moved, and incorporating a driving source required only for said purpose. CONSTITUTION:In the loader apparatus that is combined with an NC lathe, a power chuck 3 is fitted to a main shaft 2 journaled by a head stock 1 of the NC lathe. Further, a capstan rest 9 bearing a turret 8 swingably and indexably that has a plurality of circumferentially arranged tools (T) is provided on a cross slide 7. A fluid pressure cylinder mechanism or the loader gripper 11 that will be opened by a motor and an unloader gripper 12 are arranged side by side in a vertical plane normal to the arm at the tip of the loader arm 10 with the gripping center located longitudinally of the arm 10. Thus, the loader apparatus can be small-sized at low cost.

Description

[Detailed description of the invention] Technical field The present invention relates to a loader device combined with an NC lathe.

Conventional technology In general, the loading and unloading devices of lathes are of the headstock type installed on the top, front, rear, etc. of the spindle.
Currently, we use a portal type carrier that straddles the machine number, or an industrial robot installed at the front or rear of the machine, but these have a dedicated drive system required to operate the loader. Since everything is included in the device itself, there are problems in that the structure is large and the price is high.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a loader device which can be made small in size at low cost by minimizing the number of dedicated drive parts of the loader device itself, and which can be widely adapted to factory layouts.

Solution: The present invention provides a drive system for the talent tool rest whose position is controlled along the X-axis and Z-axis in an NC lathe, which is also used as a drive system for the loader device. A loader arm having a gripper is moved, and only the driving source necessary for the movement is built into the loader arm.

Example Embodiment 2 of the present invention will be described below based on the drawings.

FIGS. 1 and 2 show a rotary type loader arm, in which a main shaft 2 is supported on a headstock 1 of a well-known NC lathe, and a power chuck 6 is shown in FIG.
is fitted. A carriage that is slidably placed on the guide surface 5 of the bed 4 and whose positioning is controlled in the X-axis (main axis) direction by NC is placed on a carriage that is slidably placed and controlled by NC in the X-axis (cutting) direction. A lateral feed table 7 whose positioning is controlled is provided, and a turret tool rest 9 is provided on this table, on which a turret 8 on which a plurality of tools T are disposed on the circumference is rotatably and indexably supported. A loader arm 10 is provided on the turret tool rest 9, and is rotatably positioned at a predetermined angle, in this example, at 90 degrees between the main shaft side in the X-axis direction and the front side in the X-axis direction, by a motor or a fluid pressure motor. A loader gripper 11 and an unloader gripper 12, which are opened and closed by a hydraulic cylinder [+7] or a motor, are arranged side by side in a vertical plane on a plane perpendicular to the arm at the tip of the loader arm 10, and the gripping center is set on the arm 10. It is provided in the longitudinal direction.

When the turret tool post 9 is moved to the X-axis and X-axis by the NC of the lathe and positioned at the material position, the loader clipper 11 facing forward in the It is rotated and positioned by 90 degrees to the chuck 6 side in the axial direction. The tool rest 9 is controlled to move along the X-axis, and the unloader gripper 12 is positioned in front of the chuck O, and further moves in the X-axis direction to grip the workpiece on the chuck O. Furthermore, the turret tool rest 9 moves in the X-axis direction, the loader gripper 11 is positioned in front of the chuck 3, and further advances in the X-axis direction to feed the material to the gripping position of the chuck 3 and to have it gripped by the chuck. The turret tool rest 9 moves in the X-axis direction and sends out the workpiece at the discharge position.

The loader device then receives the material 2 at the dispensing position.

Next, in FIGS. 3 and 4, the arm moves up and down, and an arm 20 facing forward in the X-axis direction is positioned on the turret tool rest 9 at two positions, upper and lower, by a fluid pressure cylinder device 21. At the end of the arm 20, a loader gripper 22 and an unloader gripper 23, which are opened and closed by fluid pressure or a motor, are arranged side by side in a vertical plane in the X-axis direction, with their respective gripping centers parallel to the axis of the main shaft 2, and on the same horizontal plane. It is set up so that The material supplied by the inchute 24 tilted toward the lathe is gripped by the outer loader gripper 22, and the loader arm 20 is retracted upward to avoid interference with the inchute 24, and the turret tool rest is moved in the X-axis and X-axis directions. Then, the loader arm 20 is lowered and the unloader gripper 26 is positioned in front of the chuck B to perform unloading. Next, the 0-1"7-120 is positioned in front of the chuck 6 and loaded, the loader arm 20 is retracted upward, the turret tool rest 9 is moved in the Z-axis and the X-axis direction, and the unloader grip 35 is tilted forward. The chute 25 is positioned at the discharge position and the workpiece is sent out.

Next, in FIG. 5, the loader arm 66 is slidably supported on the bracket 61 on the upper surface of the turret tool post 9 in such a manner that the loader arm expands and contracts and the gripping arm moves up and down. It is connected to a piston rod 65 of a piston 64 fitted in a pressure cylinder 63 and expands and contracts. A vertical hydraulic cylinder 66 is provided at the tip of the loader arm 62;
A hollow piston rod, that is, a gripper arm 38 is connected to both sides of the piston 69 fitted in the gripper arm 6.
At the lower end of the gripper 8 is provided a gripper 39 whose grip axis is on the same horizontal plane as the main axes at the lower position in the direction of the main axes, and at the upper end is provided a small fluid pressure cylinder 40. A piston 4 fitted into this small fluid pressure cylinder 40
One piston rod 42 passes through the gripper arm 38 and opens and closes the claws of the gripper 39 by means of a wedge at the lower end.

Expansion and contraction of the loader arm 32, up and down of the gripper arm 68,
The opening and closing of the gripper 39 is controlled by a switching valve 43 in a circuit connected to the working fluid pressure source.

The wedge is pulled up by the supply pressure from the small cylinder 40 to the royal chamber, the gripper 39 closes, and the gripped material is transferred to the upper and lower cylinder 66.
The gripper 39 is raised and retracted by the supply pressure to the royal chamber.
The X-axis of the turret turret 9, the movement of the X-axis, and the cylinder 36
The arm 32 is retracted and contracted by the supply pressure to the left chamber, and the gripper 39 is lowered by the supply pressure to the upper chamber of the cylinder 36 to position the material in front of the chuck and perform loading. Further, if necessary, a 180° rotation device for the gripper 69 is provided to perform a reversing operation.

Next, FIG. 6 shows the extension and contraction of the loader arm and the rotating shape of the gripper arm. Attach the loader arm 52 to the same bracket 51 as shown in the figure.
A gripper arm 53 is pivotably supported at the front end of the loader arm 52 so as to be able to rotate from horizontal to downward in a vertical plane by about 120 degrees perpendicular to the direction of movement of the turret tool post. . gripper arm 56
A loading/unloading gripper 54 whose gripping center axis is parallel to the main thin line is provided at the end.

The length of the gripper arm 53 is such that when the gripper arm 53 rotates downward, the gripping center of the gripper coincides with a line parallel to the cutting direction of the turret tool rest 9 passing through the center of the main shaft.
The turret tool rest 9 moves in the X-axis and X-axis directions to the front of the material feeding position, the gripper arm 56 pivots to a horizontal position, the loader arm 512 extends, and the gripping center of the gripper 54 aligns with the material axis. When the turret tool rest 9 is moved in the X-axis direction to grip the material, the turret tool rest 9 moves toward the main shaft in the X and Z axes, rotates the gripper arm 56 downward, and contracts the loader arm 52 in front of the main shaft. The center of the material is aligned with the center of the chuck, and the material is further moved in the X-axis direction to be gripped by the chuck. In this case, two positions with a high degree of freedom can be selected as the material supply position and the discharge position by controlling the extended position of the loader arm 52 or by controlling the turning angle of the gritting arm 56. Furthermore, if necessary, the gripper 54 may be provided with reversing function teeth.

Figures 7 and 8 show a 2-spindle, 4-axis controlled NC lathe in which one arm-swivel type gripper is installed on two independently controlled turret tool rests, and the main shafts of headstocks 61 and 62 63.64 has a chat outside 65.66 fitted to its tip, and a carriage 69.70 is placed on two parallel guide surfaces 67.68 of the bed so as to be slidable in the X-axis direction. is X
A turret tool rest 73,74 is provided on each of the transverse carriages 71,72 which are mounted so as to be slidable in the axial direction.
A swing type loader of the type shown in FIGS. 1 and 2 is fixedly mounted on this turret tool rest 73.74, and the loader arm 75.
One grit <77.78 is attached to each tip of the gripping center axis 2t2 - the longitudinal direction of the arm, and each main axis l/M
+ It is provided on the same level as the horizontal plane containing. The rotating arm 75 is rotated 180 degrees from the position A2 where the gripper 77 faces the chuck 65 to the inverted delivery position A6 where it faces the turret tool rest 74 which is 90 degrees to the right, and the position A1 of the inchute 79 which is 90 degrees to the left of position A2. It is a positioning type. The rotating arm 76 is at position B facing the chuck 66
1 to the inverted delivery position B2, which is rotated 90 degrees to face the turret tool rest 76, and then further rotated 90 degrees and positioned at the outshoot 80 position tB3117) 180 degrees rotated to the third position. This loader device is effective when machining the front and back sides of a flange workpiece. now chuck 65
．． In 66, it is assumed that the workpieces have been gripped and machining has been completed. The loader arm 76 of the turret tool rest 74 is positioned at B1 so as to face the workpiece (workpiece of the tip chuck 66), the turret tool rest is moved in the X-axis direction, and the workpiece is gripped by the gripper 78. Next, the turret tool rest 74 is moved in the X-axis direction, and the loader arm 76 is
is rotated 180° and positioned at B3, and the workpiece is sent out on the outchute 80. Next, the turret tool rest 74 is moved in the X-axis and X-axis directions, and the loader arm 76 is rotated 90° in the reverse direction to position it at B2 and waits at a position where it interferes with the loader arm 75 f2. On the other hand, the turret tool rest 73'f is moved in the X-axis direction to face the chunk 65, and the loader arm 75EA2 is positioned to grip the workpiece. Next is the turret tool rest 73KX
The loader arm 75 is moved to the delivery facing position in the X-axis direction, and the loader arm 75 is rotated by 90 degrees and positioned at A6.
In this state, the turret tool rests 76, 74 and 2x move toward each other in the axial direction and are positioned at the delivery position. The workpiece is gripped by the gripper 78 of the loader arm 76 in an inverted state.

The turret tool rest 74 moves toward the main axis in the X-axis direction, and the loader arm 76 is rotated by 90 degrees.
1, the chuck 66 grips the workpiece, and the loader arm 76 is rotated to the withdrawal position B6. The tool post 74 is controlled in the X and Z axes to perform cutting with the tool. On the other hand, the turret tool rest 76 moves in the X-axis and Z-axis directions toward the input chute, and the loader arm 75 rotates 180 degrees to be positioned at A1 and grips the material sent to the feed position by the inchute 79. Next, the talent tool rest 76 moves toward the main axis in the X-axis and Z-axis directions, and the loader arm 75 rotates 90' in the opposite direction and is positioned at A2, and the chuck 6
5 to grip the material. The loader arm 75 turns 90 degrees to the A1 position and waits.

Effects As detailed above, the present invention provides the loader device 2 that rotates, moves up and down, and extends and retracts on the NC-controlled talent tool post, so NC control of the loader device itself and drive devices in the X-axis and Z-axis directions are unnecessary. The actions added to the loader device are rotation and up and down of the loader arm.

It is the minimum necessary for movement functions such as expansion and contraction, so it can be stored compactly and the device can be made at low cost. Additionally, since the loader arm has the necessary functions, it can be adapted to a wide range of factory layouts.

[Brief Description of the Drawings] Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 6 is a plan view of the second embodiment, Fig. 4 is a side view of the same, Fig. 5 is a side view of the third embodiment, with a part of the cross section taken, Fig. 6 is a side view of the fourth embodiment, Fig. 7 is a plan view of the fifth embodiment, and Fig. 8 is a side view of the same. be. 3.65.66...Chuck 9,74.75...
・Talent tool rest 10.20.32.52.75.
76...Loader arm 38.53...Gripper arm 11.12.・22. 23. 39. 54.
77, 78... Gripper Figure 2, Figure 1

Claims (1)

[Claims] (1) It is installed on the turret tool post of a machine tool whose movement is controlled in two directions of the X-axis and Y#l by numerical control, and has a gripper that grips the workpiece and loads and unloads it into the spindle chuck. 1. A loader device that supports a loader arm so that it can move, and has built-in driving means necessary only for the movement.