JPS63144902A - Loading device - Google Patents

Abstract

PURPOSE:To perform material feeding toward one of two main shafts, and formed work carrying from the other of them, with a simple structure, by setting at least one loading chuck on one loader head which can be moved along X, Y, Z axes, for attaching/detaching two main shaft chucks. CONSTITUTION:The first and the second main shaft chucks 3A, 3B, a material X-axis carrying device adapted to carry in the material with a chuck 26, to a material accepting E-position above the first main shaft chuck 3A, and a formed work X-axis carrying device 67 adapted to carry out the formed work with a chuck 70, from a formed work taking O-position above the second main shaft chuck 3B, are equipped. Then, this device is constituted as it contains a loading device 37, which has at least one loading chuck on one loader head which can be moved and positioned along X, Y, Z three axes, for interchanging with each of the chucks. Accordingly, material feeding to the main shaft 3A and formed work carrying from the main shaft 3B, can be performed with a simple structure by this loading device 37, and the cost can be lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a loading device in a two-spindle lathe.

Conventional technology j・F# In a conventional multi-spindle lathe, for example, a two-spindle lathe, when the same machining is performed on each spindle, or only one spindle is used. 1 in 1
The loading device used when machining a process and reversing the second process on the other spindle is complicated to handle, difficult to handle a wide variety of workpieces, and lacks versatility. It was customary. For example, as in Utility Model Publication No. 61-19847, three loader arms are arranged radially at equal angles with the rotation center at the center of a circle in which the supply position, two main shaft positions, and the discharge position are the same circle, and the central arm is equipped with a reversing mechanism. A device equipped with a regripping mechanism is known.

Problems to be Solved by the Invention In conventional systems, the standby position of the loader arm is close to the main spindle shaft during machining, which limits the operation of the turret, chips and cutting fluid can cause malfunctions, and it is difficult to work with a wide variety of workpieces. It was also desired that the product would be versatile enough to be applied to other areas.

Means for Solving the Problems The first invention is a machine tool having two main shafts and supplying materials to positions between the two spindles and carrying out finished products.1) A machine tool having a feeding device on the machine, The first spindle is fitted onto the first spindle.
3A, and a second chuck 3B that is fitted onto the second main shaft.
, a material Xl1iI swinging device 29 for transporting the raw material with a chuck to the material transfer position 8 2 above the first spindle chuck, and a product Xl1iI swinging device 29 for transporting the product from the product receiving position 0 above the second spindle chuck 3B with the chuck. an X-axis moving device 67;
The first spindle chuck, the second main chuck, the chuck of the material X-axis moving device at the E position, and the product x axis moving device chuck at the O position, which are installed on the marking machine, are Y
The second invention includes a loading device 37 having at least one loading chuck 62 in one loader head 61 capable of moving and positioning in the three-axis directions of the axis, the Y-axis, and the Y-axis. In addition to the invention, a semi-finished material receiving position J provided on the machine above the E position and 41
The first reversing chuck 52A is movable from the J position to the 01f second spindle chuck side delivery position and is rotatable by 90 degrees in the 1111 direction and the X axis direction with respect to the middle axis. The half-work material reversing device includes a second reversing chuck 52B that rotates 906 in the opposite direction to the first reversing chuck 7 at the delivery W position above the O position to take an opposing attitude.

Example Embodiments of the present invention will be described below based on FIG. 52.

A number of headstocks 2 are fixed to the center of the upper surface of the head 1, and two wooden main shafts (not shown) are rotatably supported on the headstock 2 so that their axes are horizontal and parallel to each other in the front-rear direction. Then, attach the main shaft cha to the tip of the main III of these two trees.3. To, 31
3 are fitted in each.

Further, sliding guide surfaces 4A and 4B parallel to the main shaft are cut on both sides of the upper surface ball rest 2 of the head l, and these sliding guide surfaces 4
Carriages 5A and 5B having sliding guide surfaces (not shown) in the X-axis direction are movably mounted on A and 4B, and two tool rests 6A and 6B are placed on the left and right sliding guide surfaces in the X-axis direction. NC control n' in the Y-axis and X-axis directions
7+, ii moved and positioned. Each of the tool rests 6A, 6B is provided with a turret 8A, 8BfJ which has a mounting surface for a plurality of tool holders 7 on its outer periphery and can be rotated and indexed by NC control.
It is designed to be installed.

A side plate 12 is installed vertically at the left end of the head 1.
A material receiver 14 having one end fixed to this side plate 12 and having a U-shaped groove with its tip supported by a support 13 provided on the left side crown of this IJ descends to this machine IJ! It is installed with ti i[. In the material receiver, a well-known sending device 15 for sending out materials one by one near the side plate 120 is attached to the gutter 14, and a material lifting device 1 is installed.
It is designed to be sent to the top of 6. The element lifting device 16 lifts the material vertically by means of a V-shape 18 provided at the upper end of a piston rond that is fitted into a fluid pressure cylinder 17 fixed to the left side surface of the side plate 12 with its axis perpendicular. There is. A material Z-axis moving device 20 having a rail 22 a in the front-rear (Z-axis) direction on the upper left side of the side plate 12
A frame body 22 is fixedly installed. A first movable table 23 is provided on the rail 22a so that it can be moved to three positions: a standby position A, a material receiving position B, and a material transfer position C using a known double cylinder 24.25. First moving platform 2
A first movable chuck 26 driven by fluid pressure is fixed to the lower part of No. 3 l15ij 23 a with its axis in the Z-axis direction and facing the material lifting device 16 side. A frame 30 of the material X-axis moving device 29 is located between the left side of the upper front side of the headstock 2 and the side plate 12.
is permanently installed. The frame body 30 is provided with rails 30a horizontally in the left-right (X-axis) direction, and the first moving chisel 2
6 and a second movable chuck 32 driven by fluid pressure and facing concentrically to
A second movable table 31 is provided so as to be movable along the rail 30a. Both ends of a chain 33 stretched between chain gears (not shown) provided at both ends of the frame 30 are fixed to the second moving table 31, and the second feeding table 31 is moved in the X-axis direction by the feed motor 34. Material receiving position.

It is positioned at material transfer position E.

A fixed base 38 having two parallel rails 38a in the XIh direction is fixed on the upper surface of the headstock 2.
A third moving table 3 having a rail 39a in the Z-axis direction on 8a
9 allows multiple IJ+iI2 to be placed in the hydraulic cylinder 40
It is moved and positioned to the F position above the spindle chuck 3A and the 0 position above the spindle chuck 3B. A fourth moving table 41 of the loading device 37 having FB movement guide holes 41, 1 in the vertical (Y-axis) direction is placed on the rail 39a so as to be movable in the Z-axis direction, and the motor 4 whose rotation is controlled by the NC
It is moved by the ball screw 43 rotated by 2 and positioned at the delivery position H and 2.

On the other hand, the lower stand 47 of the workpiece reversing device 46 is connected to the front rail 38.
It is fixedly installed on the upper surface of the fixed base 38 below a. Lower stand 47
A rail 47a extending in the X-axis direction parallel to the rail 38a is provided on the left side of the top surface, and a fifth moving table 48 is movably placed on the rail 47a and moved by a fluid pressure cylinder 49 to the delivery position J. , and are positioned at two positions. A turning shaft 51A is provided at the front of the fifth moving table, t8, so that the axis can be turned vertically, and it can turn! ! l+5
A first reversing chuck 52A driven by fluid pressure is fixed to the lower part of 1A with its axis horizontal. First reversing chuck:
The intermediate gear 55A is meshed with a gear 54A fitted on the output shaft of the hydraulic rotation cylinder 53A.The gear 56A is rotated by a gear 56A fitted on a pivot shaft which is rotated through an intermediate gear 55A, which rotates the cylinder 90'' and splits it into forward and rightward directions. It is about to be served.

Furthermore, a bracket 57 is fixedly installed on the right side of the lower stand 47 to the front surface of the V position, and the first reversing chuck 5 is attached to the bracket 57.
7Jj2 reversing chuck 52B similar to 2A and its reversing drive mechanism.

Rotating shaft 51B, fluid pressure rotation cylinder 53B, gear 54B
, 55B, and 56B are provided symmetrically. And the first. Second reversing chuck 52A.

528 are rotated and indexed so that they are reversed by 90'' in opposite directions so that they face forward and toward each other.
0 is inserted so that it can only slide in the Y-axis direction, and the 10th hydraulically driven loader head '61 is fixed to the lower part of the loader head '61.
- Deing chucks 62 and m20 - Deing chucks 63 are arranged vertically in the same position as the second reversing chuck 52A, which is positioned at the E4'i position with its axis horizontal, and the first reversing chuck 52A, which is positioned at the R7J position and faces the front. It has been set up. Furthermore, is there an NC control in the direction perpendicular to the vertical hole 41a of the fourth moving table 41? ? A pinion 66 to which the 11 motor 65 is fixed and fitted to the output shaft of the δ riko meshes with a rack 67 provided parallel to the sliding shaft 60 to move the sliding shaft 60 by 1. The second moving chuck 32. The upper position is concentric with the first moving chuck 26, the intermediate position M is where the 10th ding chuck 62 is concentric with the main shaft chuck 3A, and the 20th ding chuck 63 is concentric with the main shaft chuck 1-7 3A. It is moved and positioned every 3f from the lower position N. In addition, loader head 6
1. To replace the chuck jaw, loosen the set bolt (not shown), turn it 180 degrees, and set the rope grip 6.
It is also possible to have 2.63 facing forward.

A frame 69 of a product X-axis moving device 67 is fixed between the side plate 6 provided at the right end of the head 1 and the upper right side of the front side of the headstock 2. The frame body 69 has a rail 69a in the X-axis direction, and a sixth moving table 71 including a third moving chuck 70 facing in the same direction as the second moving chuck is moved along the rail 69a by a chino 72 driven by a feed motor (not shown). and is positioned at two positions: a product receiving position O and a product delivery position P.

A frame 74 of a product Z-axis moving device 73 having a rail in the Z-axis direction is fixed to the upper right side of the side plate 68, and a 7pJ7 moving platform 75 having a rail 75a in the Y-axis direction is movably provided along the rail. ing. The seventh moving table 75 is a known 2
The heavy cylinders 76 and 77 allow movement and positioning to three positions: a standby position Q, a product receiving position R, and a product delivery position S.

And the rail 75a of the seventh moving platform 75! 1゛A along this
An arm 79 that is movable by a body pressure cylinder 78 is provided. A fourth movable chuck 80 is provided at the lower part of the arm 79 and faces the third movable chuck 70 with its axis horizontal.

A gutter 83 for discharging products having one end fixed to the side plate 68, provided on the upper right side of the machine, and having a tip supported by a column 82, is installed with a downward ltQ slope. Then, the fourth movable chuck 80 is moved in the Z direction by 115i+79, and is positioned at two positions, a product receiving position T and a discharge position U, which are concentric with the third movable chuck 70. At the U position, the fourth movable chuck 8
The product released from 0 is designed to take advantage of the slope and roll in a υ-shape, inside the inner circle, to be played as 1 hand.

In another embodiment, as shown in Fig. 1O, the half-worked material reversing device 46 is removed, and the loader head 61 has a single loading nozzle, which is non-reversible and compatible with a two-spindle lathe that performs the same machining on both spindles. It is a shape loading device. In addition, even in the non-reversing type, it is possible to make it a high efficiency type by installing two rope inching tips +7.

Operation In the two-spindle NC lathe shown in FIGS. 1 to 9, the first machining is performed on the left ball spindle, and the second machining on the back surface is performed on the #i side spindle. The material is stocked in a row of material claw receivers 14 (within the i-shaped groove with the axis in the Z-axis direction. The material on the material claw receiver 14 is The material is delivered one by one onto the V-shape 18 of the material lifting device 16 by the material feed-out device 15 which operates at The double cylinders 24 and 25 move the first movable chuck 23 to a position concentric with the first movable chuck 26, and the first movable chuck 26 moves to the 8th position. The material is gripped.■ The palm 18 is moved downward, the first moving chuck 26 is moved to the C position, and the material is transferred to the second moving chuck 32, which is waiting at the 0 position of the two material Z-axis moving devices. The second movable chuck 32 is moved to the 8th position by the chain 33 driven by the feed motor 34, and is concentrically opposed to the 10th loading chuck 62 which is waiting at the H and L positions of the loading device 37. 624, motor 4 rotated by NC control 1
2, a fourth moving table 41. The sliding shaft 60 is moved to the 1st position via the loader head 61 and approaches the second movable chuck 32, and the gripping claws of the 10th ding chuck 62 are closed by fluid pressure drive +)J, and the gripping claws of the second movable chuck 32 are closed. opens, Song Qian-o's grip is changed, and it retreats to the 8th position. The 10th-de-1' gripper 62 holds the material and waits at the L position.

The empty second movable chuck 32 moves to the 0 position again to receive the next material.

When the first processing is completed, N Cii'! The pinion 66 is rotated by the motor 65 rotated by ``4]■, the sliding shaft 60 is moved down via the rack 67, and the loader head 61 is moved down to the N position.
Move to position. In this shaped tube, the 20th dingcha, ri 63 is the main shaft chininoku 3. When concentric with
Grip the finished workpiece. Subsequently, the gripping claws of the spindle chuck 3A are opened to change the grip, the 20th cutting chuck 63 is retreated to the N position, and the workpiece is extracted from the spindle chuck 3A. Next, the loader head 61
moves up to the M position, the 10th ball chuck 62 becomes concentric with the ball chuck 3A, moves again to the position 2, approaches the main spindle chuck 3A, and the material gripped by the 10th ball chuck 62 is held when the main spindle chuck 3A is opened. It is carried into the gripping claw. The gripping jaws of the spindle chuck 3A are closed, the gripping jaws of the 10th denging chuck 62 are opened, and the material is re-grasped, and ■ it retreats to the 1st position T, the 10th denging chuck 62 is empty, and the loader head 61 is in the L position. ascend to the upper world. The second one is positioned at the L position and grips the blank material.
The 0-ding chuck 63 is concentric with the first reversing chuck 52A facing the front at the S position of the workpiece reversing device 46, and the 20th-ding chuck 53 moves to the ■ position, approaches the first reversing chuck 52A, and is opened. The semi-finished material is placed in the gripping claws of the first reversing chuck 52A, and after the gripping is changed, the 20th de-inging chuck 63 retreats to the N position and the semi-finished material is transferred to the first reversing chuck 52A. be grasped. The first reversing chuck 52A is rotated by 90 degrees by the hydraulic rotary cylinder 5jA, and at the same time, the second reversing chuck 52B is also rotated by 909 degrees in the opposite direction by the hydraulic rotary cylinder 53B, so that the gripping claws thereof face each other and take opposing positions. Then, the first reversing chuck 52A is moved to a position by the fifth moving stage 48 moved by the fluid pressure fringe 49, approaches the second reversing chuck 52B, and the semi-finished material is gripped by the second reversing chuck 52B. The first reversing chuck 52A retreats to the S position and the first reversing chuck 5
2A, the second reversing chuck 52B rotates 90" to face the front. Subsequently, the fourth moving table 41 of the loading device 37 is moved in the X-axis direction by the fluid pressure cylinder 40 to the G position, and grips the blank material. The second reversing chunk 52B facing the front and the empty 20th de-ing chuck 63 become concentric.Then, the 20th de-1' chuck 63 moves to position (3) and approaches the second reversing chuck, and the blank material is transferred to the second reversing chuck. 20
- The grip is changed to De Ingchasok 63. 20th-
After the loading channel 63 retreats to the N position, the loader head 61 descends and is positioned at the M position.
Deing chuck 62 and spindle chuck 3 that grips the finished product
B becomes concentric and the 10th cutting chuck 62 is moved to the - position and approaches the spindle chuck 3B, and the product on which the second machining has been completed is gripped by the 10th working chuck 62. The 10th loading channel 62 is moved back to the 1st position, and then the loader head 61 is moved to the N position and the 20th
- The semi-finished material that has undergone the first machining and is gripped by the cutting chuck 63 is gripped by the spindle chuck 3B. Next, the loader head 61 rises to the L position and the product X-axis moving device 67
The third movable chuck 70 and the tenth debugging chuck 62, which are on standby at the 0 position, become concentric and the finished product is gripped by the third movable chuck 70. The third movable chuck 70 that has gripped the product moves to the P position and becomes concentric with the fourth movable chuck 8o that is waiting at the Q position of the product Z-axis moving device 73.

Then, the seventh moving table 75 is moved to the N position by the 21 inch fringes 26 and 27, and the fourth moving chuck 8° approaches the third moving chuck and receives the finished product from the third moving chuck 70.Subsequently, the fourth moving chuck 80 After moving to the S position, the third movable chuck 70, which was emptied, is returned to the O position.The fourth multi-moving chuck 80 is lowered to the S position by the arm 79 moved by the fluid pressure cylinder 78, and the product to be gripped is moved to the S position. The product is stopped slightly above the -J-shaped guide of the product carrying shaft 83, and the gripping claws of the fourth moving channel 80 are opened and the product is placed in the V position.
It is dropped into the shaped groove and taken out using the slope f11. Meanwhile, No. 1 was empty. 20th - Deing Cha Seok 62.6
3 is moved to the F and L positions, receives the next material from the second moving chuck 32, and waits until the turning process is completed.

Next, the operation of the other embodiment shown in FIG. 10 will be explained.

Material tO
2 is held by the loading chuck 62 which is on standby at the L position.The loading chuck 62 which grips the material is lowered to the M position by the movement of the loader head 61, becomes concentric with the main l111 chuck 3A, and the material is gripped by the ball shaft Nayanoku 3A. The loaded chuck 62, now empty, rises again by the movement of the loader head 61 and waits at the L position. The next material is gripped by the second moving chuck 32 and placed at position E; η
When it is determined, the gripping film is fixed, and the loading chuck 62 grips the element + O again, moves to the G position by moving the fourth moving table 41, descends by moving the loader head 61, and moves the main shaft chuck 3B to the M position. The main shaft chuck 3B holds the material concentrically with the main shaft chuck 3B. Then, the empty loading chuck 62 returns to the L position and waits. When the turning process of the main spindle chuck 3A is completed, the loading chuck 62 descends to the M position via the F position, and the main spindle chuck 3
The product is held concentrically with A and gripped by the coding chuck 62. loading chuck 62
is raised to the L position by the movement of the loader head 61, further moved to the G position, and is concentric with the loading chuck 62 and the third moving chuck 70 stopped at the ○ position of the product X-axis moving device 67, and the gripping film is edited. The finished product is transferred to the first moving chuck 7.
0 and carried out.

If the loader head 61 is provided with two loading chucks, it is possible to achieve even higher efficiency by slightly changing the above-mentioned movement path.

effect As described in detail above, the present invention has a Y-axis on the headstock.

One or two loading chucks are provided on one loader head that can move in the Y-axis and Z-axis, so the operations of supplying materials to two spindles and unloading two products can be achieved with a simple mechanism, reducing costs. sell. Also, 90° in opposite directions
If the machine is equipped with a reversing device that allows one of the two rotatable reversing chucks to move, it can be immediately reversed on the machine, improving work efficiency. Furthermore, it can be adapted to other mechanisms by making simple changes, and by changing some of the devices, a wide variety of variations such as non-reversing type and non-reversing high-efficiency type can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a two-spindle NC lathe with a loading device according to the present invention, Fig. 2 is a schematic front view of the present invention with operation explanation added, and Fig. 3 is a loading device 1 rotation W of the present invention.
An explanatory view from the side of U, Figure 4 is a front view of the reversing device,
Figure 5 is an explanatory diagram seen from above in Figure 4, and Figure 6 is the material Z.
FIG. 7 is an explanatory diagram of the Ii+ moving device, FIG. 7 is an explanatory diagram of the two-book moving device, FIG. 8 is an enlarged perspective view of the loader head turned toward the front, and FIG. 9 is an explanatory diagram of the movement of the loader. The first OUjJ is a perspective view of a two-spindle NC lathe with a non-reversing loading device. 3A, 3B...Chuck 8A, 8B...Cret 12.68...Side plate 14...Material receiver is open 15...Material delivery device 16...
Material lifting device 20...Material Z-axis moving device 23...First moving table 26...First moving unit 29...Material X-axis moving device 31...Second moving table 33.72...Cheno 32...・
2nd mobile island 37... Loading device = 39... 3rd moving platform 41...
4th moving table 48...Fifth moving table 46...Semi-processing t-reversing device 52A...First reversing chuck 52B...Second reversing chuck 61...Loader head 62...10th - Dachanoku 63...No. 20-Dachanoku 67...Product X-axis moving device 75...7th moving table 70...
・Third moving chuck 73... Finished product Z-axis moving device 80... Fourth moving chuck 83... Finished product unloading gutter

Claims (2)

[Claims] (1) In a machine tool that has two spindles and is equipped with a conveyor device on the machine that supplies material to the two spindle positions and carries out finished products, a first spindle chuck that is fitted onto the first spindle; Second
A second spindle chuck that is fitted onto the main spindle, a material X-axis moving device that transports the material with the chuck to the material transfer E position above the first spindle chuck, and a chuck from the product receiving O position above the second spindle chuck. a product X-axis moving device for transporting products at the machine, the first spindle chuck, the second spindle chuck, the chuck of the material X-axis moving device at the E position, and the product X-axis moving device at the O position, a loading device having at least one loading chuck on one loader head capable of moving and positioning in the three-axis directions of the X, Y, and Z axes for delivery to and from the chuck; A loading device characterized in that a single loader head is used to attach and detach the second spindle chuck and the second spindle chuck. (2) In a machine tool that has two spindles and is equipped with a conveyor device on top of the machine that supplies material to the two spindle positions and carries out finished products, the first spindle chuck is fitted onto the first spindle. , a second spindle chuck fitted to the second spindle, a material X-axis moving device for transporting the material with the chuck to a material transfer position E above the first spindle chuck, and a product receiving O above the second spindle chuck. Product X where the product is transported from the position using a chuck
an axis moving device, which is provided on the machine and is movable between a half-worked material receiving position J above the E position and a delivery position on the second spindle chuck side relative to the J position; A semi-finished work having a first reversing chuck that can rotate 90 degrees in the X-axis direction and a second reversing chuck that rotates 90 degrees in the opposite direction to the first reversing chuck at the delivery W position above the O position to take an opposing posture. The material reversing device, the first spindle chuck, the second spindle chuck provided on the machine, the chuck of the material X-axis moving device at the E position, and the chuck of the product X-axis moving device at the O position for transferring the X-axis , an attachment/detachment device having two loading chucks on one loader head capable of moving and positioning in the directions of three axes, Y-axis and Z-axis, and attaching and detaching the first spindle chuck and the second spindle chuck. A loading device characterized by a single loader head.