DE8020954U1 - PRINT BANK - Google Patents

Description

Autospin GmbH 238

Bielefeld 08/04/80

- 4 spinning machines

The invention relates to a spinning machine according to the preamble of claim 1.

In the case of spinning machines of the type mentioned at the outset, it also suffers increasing automation the accessibility to the actual processing zone. Also through an increase the number of supports and pressure rollers makes it harder to reach the machine's work area. If the supports are also located in two or more transverse planes to the axis of rotation of the rotating workpiece, the Work area for the operator become completely inaccessible. An increase in the number of supports or the However, spinning is desirable in the interest of increasing the performance of the spinning machines. One from all sides The headstock, tailstock and supports added to the work area make it necessary to load the machine from above. Loading and unloading can then only be done with the crane. Cranes cannot be controlled at any speed and thus cause longer set-up times. For loading and unloading the machine, it is already known to use the tailstock in To move in the direction of the spindle axis.

The invention is therefore based on the object of reducing the performance of spinning machines reduce set-up times.

This object is achieved according to the invention by the characterizing part of claim 1. The pivotability according to the invention must be 90 ° or more. With the preferred vertical arrangement of the swivel axis of the tailstock,

Autospin GmbH 238

Bielefeld 08/04/80

a swivel range of 120 ° to 180 ° proves to be the most favorable solution in practice. For loading and unloading the tailstock with its quill is swiveled to the periphery of the spinning machine. There is the finished workpiece removed from the quill, placed a new workpiece on the quill and swiveled back with it. Swinging out the quill with the workpiece placed on it increases the danger for the operator reduced by rotating parts of the machine, since its field of activity is at a safe distance from the spindle and the tools is. In the loading and unloading phase, the quill is for one operator as well as for others Automation facilities easily accessible. The better accessibility makes loading the machine easier, because you can see at a glance whether the workpiece is correctly seated on the quill; in addition, the loading the free quill faster than with a crane. Depending on the design of the machine, it can be useful to to combine the pivoting movement of the tailstock with a translatory movement of the same. Both movements should preferably take place one after the other or, if necessary, overlap. If, as primarily intended, the The swivel axis of the tailstock is vertical, on certain machines, e.g. with 4 supports, a large translational travel in the direction of the spindle axis may be necessary around the work area of the machine to leave without requiring the lateral space required for pivoting the tailstock. Decisive for the success according to the invention is that the quill can be moved relative to the one in the direction of the mirror axis Tailstock slide is pivotable.

Autospin GmbH 238

Bielefeld 08/04/80

Preferably it can be provided according to claim 2 that 2 tailstocks are used alternately. Alternatively you can two quills can also be provided on a tailstock. These two quills are on a common carrier attached, which is pivotably mounted on the tailstock slide, which can be moved in the direction of the spindle axis. the Both quills are preferably both arranged in line with the spindle axis in the working or loading position. The spindle axis of the spinning machine and the pivot axis of its tailstock or the quills arranged on it lie in one plane.

Another embodiment of the invention is given in claim. With the preferred use of 2 tailstocks or quills, these are arranged offset by 180 ° on the pivotable support of the tailstock. 3 quills on the carrier are arranged offset by 120 ° accordingly. When using three jointly pivotable The loading and unloading station can be separated from the quills. Especially with short working hours, three can Quills can be advantageous. While the machine is working and the first quill presses the workpiece against the spindle, -will the just finished workpiece is removed from the second quill and at the same time a new workpiece is placed on it the third quill attached. Using three quills also has the advantage that the loading and unloading stations are always arranged between the machine bed itself and the supports.

To shorten the set-up times, the quills with the workpieces arranged on them can be swiveled quickly desirable. To with a rapid movement of the quill

• ••• I »· ■ · ··· t t ·

ι ι ··· · »ι« if ··

Autospin GmbH 238

Bielefeld 08/04/80

and workpiece to prevent the workpiece from being thrown out, this danger particularly during the pivoting movement exists, the embodiment of the invention according to claim 4 is provided.

Since during the spinning process mostly from a perforated round or a perforated workpiece is assumed, the embodiment of the invention according to claim 5 is preferred intended. Grippers are primarily used that clamp the workpiece centrally like a pipe expander. In addition, hooks can be provided at the ends of the grippers, which hold the workpiece in a form-fitting manner on the quill.

Another embodiment of the invention is given in the claim. Moves for workpieces of different sizes the earliest possible start of the rotary movement, since large workpieces are further out of the machine's work area must be pulled out before they can be swiveled with the quill. This fact bears the Embodiment of the invention according to claim 6 in particular account.

The development of the invention according to claim 7 takes into account in particular the unusually high forces to Clamping and pressing of the workpieces. With regard to the wear behavior, the required precision and the the stress resulting from the great forces, this solution is the pivotability of the tailstock according to the invention or adapted to its quills.

The improved accessibility, which is particularly evident in the fact that the finished workpiece is freely pulled off to one side offers the possibility of quickly loading and unloading even the smallest workpieces Have a diameter at or near the center of their length.

ll ** t f «·» κι · t

Autospin GmbH 2 38

Bielefeld 08/04/80

According to the invention, the design is corresponding here Claim 8 application. It is advantageous here that the finished workpiece does not have between 2 tools must be taken out.

The invention is explained in more detail with reference to the preferred exemplary embodiments shown in the drawing explained.

Show:

Figure 1: A spinning machine with 2 quills on a swiveling tailstock.

Figure 2: A spinning machine with 3 quills on a swiveling tailstock.

Figure 3: A cut open gear to the Tailstock from Figure 1 on an enlarged scale.

Figure 4: A section from a quill

FIG. 3 with quill-side means for clamping and gripping the workpiece according to FIG Line IV / IV in Figure 3. (enlarged scale)

FIG. 5: A side view from FIG. 3 according to line V / V.

The spinning machine (1) shown in Figure 1 consists of a machine bed (11) on which a headstock (6), a tailstock (8) and four supports (2, 3, 4 and 5) are arranged. The spinning machine has a drive (28) for the main spindle (38) in the headstock (6). The drives for the supports are not shown. At the spindle

«•• III ti ·· · · ι I

ti ι * · ·· ι · al it

Autospin GmbH 238

Bielefeld 08/04/80

a conical tool (29) is attached. Between
the latter and the sleeve (9) on the tailstock (8) is a partially already machining clamped in the clamping direction of the spindle axis (7), _{i ((sory} workpiece (39). This workpiece is || of 4 pressure rollers (40, 41, 42 , 43) which operate in different ;; levels, non-cutting deforming the tailstock (8)% in the direction of arrow (44) 45) is pivotally movable and in the direction of ^ the arrow (by 180 ° the tailstock |.. * has next to the quill (9) in alignment with the spindle |

axis (7) a second quill (12). The quill (9) is in I.

Working position (10), the quill (12) is in loading or unloading ί

position. The quill (12) is in the loading position:

on the periphery of the machine (1) or the machine $

beds (11). The pivot axis of the tailstock and the spin;

del axles (7), as well as the quill axles lie in one plane,

which goes perpendicularly through the plane of the drawing of FIG. r;

Depending on the size of the workpieces, on which I

the processing to be carried out and the structural dimensions |!

the spinning machine can execute the spinning machine # '

corresponding to the illustration of Figure 2 with 3 quills |.

(13, 14, 15) may be provided, these being shared on the i

Tailstock (16) are arranged. For short working hours |

this version offers the advantage that loading and unloading |

can take place at different points at the same time. | <

This reduces the set-up time per workpiece. The quill |

(14) is in the unloading position and shows a |

already finished workpiece (46). On the quill (15) is I

a new round (47) is already clamped, which will be used with the next | -

Work cycle in the work area (48) of the machine | _;

is panning. The operator can, as far as a loading | i

Sending and unloading by hand is provided, this · 'H

Carry out work on the periphery of the machine. Of- , ·;

• · ι r - β ir ** ι » I ·· »t · I lit» · * rt

1 I ·· * tt t

Autospin GmbH 238

Bielefeld 08/04/80

- 10 -

The same is automatic loading in the illustrated arrangement of the sleeves (14, 15) due to the good accessibility the loading and unloading stations easily possible. The special feature of the invention on a spinning machine is It can be seen that with the chosen division of two and three of the swivel movement of the tailstock, the space requirement is also required can be bridged for the laterally arranged supports.

The pivoting of the tailstock requires a special pivoting and locking device shown in Figure 3, thus the necessary tolerances for the positional fixation of the workpiece, taking into account the high levels to be transferred Forces can be made safely.

The tailstock in Figure 3 consists of a pivotable upper part (47) which has a face toothing on its bottom surface (31) and with a large central sleeve-shaped pin (48) in the lower part (49) of the Tailstock (8) engages. At the bottom of the pin is a worm wheel (37) which can be axially displaced on the sleeve is in engagement with a screw (34) is provided.

This is held in the non-pivoting lower part (49) of the tailstock (8) in bearing blocks (35, 36). The snail is driven by a motor (22). The swiveling upper part (47) of the tailstock is used to change the swivel position raised by a double-acting cylinder (33) and then by the pivoting device (22, 34, 37) through 180 ° turned. After completing this turn, the upper part (47) of the double-acting cylinder (37) against the not swiveling lower part (49) pulled. Due to the many stops (24) formed by the spur toothing (31) permanent, precise storage of the quills is guaranteed.

t «ar«

I I ·

I tit

Autospin GmbH 238

Bielefeld 08/04/80

- 11 -

Before the actual swiveling process, the tailstock (8) is lifted from the cylinder (2 3) on the machine bed (11) Sliding away from the work area according to arrow (50) and as soon as sufficient pivotability without hindrance is given by the supports, the pivoting movement takes place, after which the tailstock is again drives back. The finished workpiece (51) can now be removed while the new round blank (52) is already being processed will.

In Figure 3, the arrangement of tool parts on the quills is shown as they are according to the invention, during manufacture is provided by vehicle wheels.

FIG. 4 shows how a workpiece (53) is fastened in the quill in order to prevent it from being thrown away during the pivoting movement or to be avoided during the translational movement.

A clamping device (54) is provided on the revolving quill (9), which holds the workpiece (53) in place and aligns. Clamping and alignment are carried out by grippers (17, 18) that hold the workpiece in the shown Case a round blank with a central bore (64), reach through and with its clamping surfaces (20, 21) to the outside in the Clamp the hole (64) of the blank.

The levers (20, 21) have bevelled backs (55, 56) which are controlled radially by an axially movable cone (57) will. The spreading movement is carried out by springs (58), the opening movement is carried out axially movable plunger (59), which in connection with springs (60, 61) acting in the radial direction on the gripper lets the grippers move together and thus allows the workpiece (53) to be changed. Are on the grippers (17, 18)

Autospin GmbH 238

Bielefeld 08/04/80

- 12 -

Hooks (62, 63) which engage behind the workpiece (53) through its bore (64) are provided.

The clamping device (54) is installed in a tool part (27) fastened to the quill (9). The tool runs with the quill (9).

• · I

'■ · ■ · ·· · ■ · ■ t t

Autospin GmbH 238

Bielefeld 08/04/80

summary

The invention relates to a press bench (1) with a machine bed (11), a headstock (6), a swiveling tailstock (8) and at least 2 supports (2.5). The tailstock (8) is made in two parts, it has at least 2 quills (9, 12). The quills are arranged in a star shape on the tailstock, with one each The quill is in the working position and the other quills are in positions in which they are loaded or unloaded. Grippers (17, 18) are provided on the quills, which pick up the workpiece (53) centrally on a bore (64). To increase security, hooks (62, 63) can be provided on the grippers, which in addition to the frictionally engaged Voltage create a positive fit, and thereby a sufficiently secure fastening of each workpiece on the circumferential quill.

The tailstock (8) is moved in the direction of the spindle axis (7) in addition to its pivoting movement. Both the translational movement and the swivel movement of the tailstock are driven by a separate drive (22, 23) controlled.

The different positions of the tailstock (8) with its quills (9, 12) are through a face gear (31) fixed. To pivot, the upper part (47) of the tailstock (8) is raised, rotated and in the desired position Layer placed back on the spur toothing. In the case of workpieces with a difficult shape, parts of the tool can (26, 27) to be attached to the quills (9, 12) of the tailstock or tailstocks (8).

Claims (8)

Autospin GnibH 238 Bielefeld 08/04/80 a & i sp rühe 1. spinning machine (1) with several supports (2 ... 5), a headstock (6), one movable in the direction of the spindle axis (7) between two end positions 5 tailstock (8) with at least one quill '' (9) moving along with it, one end position of the quill being the working position forms and the other end position (10) is assumed in the loading and unloading phase, this Elements are arranged together on a machine bed (11), § characterized in that the tailstock (8) can be pivoted. 2. spinning machine according to claim 1, characterized in that quills (13, 14, 15). - That the tailstock has two (9, 12) or more concurrently 3. spinning machine according to claim 2, characterized in that the quills (13, 14, 15) in a star shape on the tailstock (16) are arranged. 4. spinning machine according to claim 1 and 2, characterized in that on each revolving quill (9) at least a gripper (17, 18) is arranged for the workpiece. 5. spinning machine according to claim 1, characterized in that the grippers (17, 18) centric to the center of rotation (19) the quill (9) are arranged and have outwardly directed clamping surfaces (20, 21). Autospin GmbH 238 Bielefeld 08/04/80 6. spinning machine according to one or more of the preceding claims, characterized in that the tailstock has a separate drive (22, 23) for the pivoting movement and for the translational movement. 7. spinning machine according to one or more of the preceding claims, characterized in that the end positions the pivoting movement by a large number of form-fitting stops (24), in the manner of a spur toothing (31), are determined on the parts (47, 49) of the tailstock that are to be pivoted relative to one another is formed centrally to the pivot axis (25). 8. spinning machine according to one or more of the preceding claims, characterized in that each quill
(9, 12) is designed as a tool carrier and carries a tool part (26, 27).