JPS6116585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves mounting a workpiece on a table that rotates continuously in one direction, such as a vertical rotary table type surface grinding machine, and This device relates to a device for loading and unloading workpieces in a machine that performs machining, and in particular, a workpiece that has been subjected to the first machining and is returned is reversed and mounted on the table again to perform the second machining. This invention relates to a workpiece loading/unloading and reversing device that transports the workpiece out of the machine after the workpiece has been removed.

For example, when it is necessary to sequentially machine both sides of a workpiece, such as sequentially grinding both sides of a connecting rod using a vertical rotary table surface grinder, there is a so-called A first machining holder to which an unprocessed workpiece is removably attached using a cam, etc., and an intermediate workpiece, which has been attached to this first machining holder and subjected to the first machining, is also attached to the first machining holder by a cam or the like. A second removably attached
processing holders are provided alternately on the table, an unprocessed workpiece is attached to the first processing holder to perform the first processing, and the first processing is performed. The intermediate workpiece on the processing holder is reversed and transferred to the second processing holder to perform the second processing, and after this second processing is performed, the intermediate workpiece is transferred to the second processing holder. A method is adopted in which the processed workpiece on the tool is taken out of the machine, and processing from both sides is sequentially performed with one machine. In this method, the workpiece is initially clamped by a machining holder using a spring or the like, and the clamp is automatically released and activated by a cam or the like installed along the table, and the workpiece is simply machined. The workpiece can be installed by simply placing it on the processing holder, and the workpiece can be taken out by simply taking out the workpiece placed on the processing holder in an unclamped state. Transfer and unloading were carried out manually. However, such work is dangerous and dirty due to the scattering of grinding oil, cutting oil, grinding debris, and cutting waste, and requires continuous work over a long period of time, so automation has been desired. A few automation devices have been proposed, but all of them are capable of transporting unprocessed workpieces, transporting completed workpieces that have undergone both the first and second processing to the outside of the machine, and Furthermore, it is necessary to invert and transfer the intermediate workpiece that has undergone the first processing, and these loading and unloading operations are performed on a continuously rotating table. Since it is necessary to perform the process while moving in synchronization with the rotation, there are disadvantages in that the apparatus is complicated and the cycle time is relatively long. In addition, in this type of device, it is desirable that the workpieces placed on the table are arranged as closely as possible to increase productivity, and it is desirable that the carrying-in/out device also shorten the cycle time and be compact accordingly.

Furthermore, it is desirable to make the transfer path of the workpieces required for loading, unloading, and reversing as short as possible, to minimize the number of workpieces that accumulate along the way, to process efficiently, and to make the apparatus compact.

The present invention has been made in view of the above-mentioned points, and it is possible to carry out the loading and unloading of workpieces, including the above-mentioned reversal to and from a continuously rotating table, in a shorter cycle time by using a simpler and more compact device. In addition, it is possible to minimize the number of workpieces that accumulate during the process, and avoid the possibility that some machining holders become empty during the first or second machining process, especially after the start of machining and before the end of machining. To provide a device for carrying in/out and reversing a workpiece in a vertical rotary table type surface grinding machine, etc., which enables efficient machining by suppressing a state in which the work is only performed in a shorter time.

1 to 5 showing an embodiment in which the present invention is applied to a vertical rotary table type surface grinder will be described below. In Fig. 1, 1 is the bed of a vertical rotary table type surface grinder, 2 is a table that continuously rotates in the direction of arrow A at a predetermined feed rate, and 3 is a shaft (not shown) installed perpendicular to the top surface of the table 2. It is an attached whetstone. Note that other parts of this vertical rotary table type surface grinding machine are omitted from illustration.
10a, 10b, 10c, 10d, etc. are processing holder assemblies placed equidistantly on the table 2. The description will be made by removing auxiliary symbols such as a to d from the symbols indicating each part (the same applies hereinafter). 11c, 11d, etc., and holders 12a, 12b, 12c, 12d, etc. are provided in pairs on the rear side for performing the second processing, respectively. These first and second processing holders 11 and 12, as shown in FIG.
It has a first support 14 that supports the lower surface and end portion of the small diameter side of the workpiece 13 shown by the imaginary line, and a U-shaped second support 15 that supports the lower surface of the large diameter side. The workpiece 13 is detachably supported by the receivers 14 and 15. The supports 14 and 15 of the second machining holder 12 are higher than those of the first machining holder by the amount of the first machining allowance. Needless to say, it has become possible to perform the processing of

Moreover, these first and second processing holders 11,
12, clamp pieces 16 for pressing the large-diameter end of the workpiece 13 toward the small-diameter side are swingably attached to shafts 17 corresponding to the respective workpieces 13. . A roller 18 is attached to the lower end of both clamp pieces 16, and a slide 21 is attached to these rollers 18 and is pressed by a spring 20 located between the two clamp pieces 16 and provided inside the holder main body 19. Both ends of a bar 23, which is swingably attached to the tip of the bar 22 by a pin 22 and extends perpendicular to the plane of the paper, are in contact with each other, so that both clamp pieces 16 can be held together even if there is some variation in the dimensions of the workpiece 13. One spring 20 can reliably press each workpiece 13.
Note that these clamp pieces 16 are provided with a stopper 24 that restricts the amount of swinging toward the workpiece 13, and when either one of the holders 11 or 1
Even when there is no workpiece 13 on the holder 2, the clamp piece 16 of the other holder 12 or 11 can be operated reliably. The shaft 17 has
The lever 2 is located between the pair of clamp pieces 16.
5 is swingably attached. This lever 2
A roller 26 is attached to the lower end of the lever 25, and a push plate 27 is provided in the middle of the lever 25 to abut against both clamp pieces 16 so as to be able to press them in the unclamping direction. When unclamping the roller 26, press the roller 26 to the right (in FIG. 3) against the spring 20 to bring the clamp piece 16 to the unclamping position as shown by the solid line in FIG. An unclamping cam 28 for positioning is provided. This unclamping cam 28 is attached to the bed 1 via a bracket 29, and as shown in FIG. It is provided over a range from the front to the rear by a predetermined distance.

Furthermore, each retainer assembly 10 includes first and second
Elevating plates 30 are swingably mounted on shafts 31 for carrying workpieces 13 in and out of the processing holders 11 and 12 without interfering with the clamp pieces 16, respectively. This elevating plate 30 has guide grooves 32 and 33 for receiving the workpiece 13 corresponding to the first and second processing holders 11 and 12, and
It has windows 34 and 35 (see FIG. 1) that allow the clamp piece 16 and the second holder 15 to pass through, and the workpiece 13 is placed between the first and second supports as shown by the imaginary lines in FIG. After being placed on the receivers 14 and 15, it can be further lowered. Elevating plate 30
In the third part, a projection 36 is provided at the lower left side, and a roller 37 is attached to the lower end of the projection 36.
A cam 38 for lifting and lowering the lifting plate 30 is attached to the roller 37 via a bracket 29 to the bed 1 in the same manner as the unclamping cam 28. This elevating cam 38 is located in a range from slightly before to slightly behind a section where the workpiece 13 is carried in and out, which will be described later, and the unclamping cam 38.
It is set up over a slightly narrower range than the range of 8,
In the unclamped state, the roller 37 is pressed to the right in FIG. 3, and the elevating plate 30 is placed in the raised position shown by the solid line in FIG.

As shown in FIGS. 2 and 3, arcuate guide rails 40 that run along the table correspond to the locations where the workpieces 13 are carried in and out.
It is attached to the bed 1 via 1. A carriage 42 is mounted on the guide rail 40 so as to be able to reciprocate along the guide rail 40. As shown in FIG. 1, the carriage 42 includes a synchronizing member that moves forward and backward with a cylinder 43 that operates according to the loading/unloading cycle, and that can be engaged with and detached from projections 44 provided at predetermined positions of the holder assembly 10. 45 is attached, and the carriage 42 is moved in parallel with the table 2 in synchronization over a section shorter than the interval (angle) between the respective holder assemblies 10 (for example, 1/3 to 1/2 of the same interval). . Further, for the carriage 42, a double-acting device 4 such as a cylinder device, which has one end connected to a suitable fixing member 46 and the other end swingably connected to the carriage 42, is provided.
7 is provided so that the carriage 42 can be immediately returned to a fixed original position determined by a stopper 48 provided on the guide rail 40 after the synchronous parallel movement.

The carriage 42 includes a carry-in guide 50 to which the unprocessed workpieces 13A are sequentially supplied from outside the machine in accordance with the carry-in/out cycle by a parts transfer device (not shown) or the like;
A carry-out guide 51 is provided for receiving the processed workpiece 13C that has been subjected to the first and second processing from above the second processing holder 12 and guiding it out of the machine.

When the synchronization member 45 is in contact with the projection 44 and the carriage 42 is in a synchronous parallel movement state with the table 2, the carrying guide 50 moves the holder assembly 10 (10b in FIG. 1) corresponding to the projection 44. )
The first processing holder 11 (also 11b in FIG. 1) is arranged in phase with the first processing holder 11 (also 11b in FIG. 1). As shown in FIG. 2, this carry-in guide 50 is positioned substantially horizontally on the carriage 42, and its tip is aligned with the guide groove 32 of the elevating plate 30 in the raised position.

On the other hand, when the synchronization member 45 is in contact with the protrusion 44 and the carriage 42 is in a synchronous parallel movement state with the table 2, the carry-out guide 51 is located at the rear of the holder assembly 10b that the carry-in guide 50 is facing. Holder assembly 10 (10c in FIG. 1) located next to it (with respect to the rotational direction of table 2)
The second machining holder 12 (also 12c in FIG. 1) is arranged so as to match in phase. As shown in FIG. 3, this unloading guide 51 is inclined so that the tip (left side in FIG. 3) side is lower, and the lifting plate 3 whose base end is in the raised position.
0 guide groove 33 and the lifting plate 30
It is arranged to face the sloping lower end of the

Further, as shown in FIG.
is the first processing holder 11 (1 in Fig. 1).
1c), turn it over, and then remove it from the second machining holder 12 (12 in Fig. 1) when carrying it in next time.
First and second reversal guide plates 52 and 53 (hereinafter referred to as first and second reversal guides 52 and 53) are provided for transferring to c). In addition,
In FIG. 1, the intermediate workpiece 13B on the first reversing guide 52 is the processing holder assembly 10b.
was taken out from the first processing holder 11b during the previous carrying out, which was at the position 10c in FIG.
It was moved here. These reversing guides 52 and 53 are used for the first and second machining operations where the carry-in and carry-out guides 50 and 51 are facing each other when the carriage 42 is in a synchronous parallel movement state with the table 2 as described above. Second and first processing holders 12b and 1 located between holders 11b and 12c
1c, the guide grooves 33b and 32c are configured in the same manner as the loading guide 50 with respect to the guide groove 32b, and the intermediate workpiece is subjected to only the first processing. 13B is arranged so that it can be exchanged with the processing holders 12b and 11c (hereinafter, this position will be referred to as a standby position).

These first and second reversal guides 52 and 53
As shown in FIGS. 4 and 5, a shaft 54 passes through a plane that coincides with the upper surface of these, and has its axis centered in the center of both reversing guides 52 and 53 as shown in FIG. Hollow shaft 55 and brackets 56,5
They are fixed to each other via 7. The hollow shaft 55 is attached to a bracket 58 attached to the carriage 42, as shown in FIG.
The shaft 54 is rotatably supported at 60 and the hollow shaft 55
It is rotatably supported therein via bearings 61 and 62. Pinions 63 and 64 are fixed to the shaft 54 and the hollow shaft 55, respectively, and racks 66 and 67, which are slidably engaged with the guide 65, are engaged with these pinions 63 and 64, respectively. Racks 66 and 67 are shown in FIGS. 1 and 4.
As shown in the figure, the reversing guides 52 and 53 are connected to cylinders 68 and 69 respectively, and when in the illustrated retracted position, the reversing guides 52 and 53 are placed in the waiting position, and the corresponding reversing guides 52 and 53 are in the forward position. 53 from above the other reversing guide 53 or 52 in the standby position, and
The intermediate workpiece 13B can be sandwiched between the intermediate workpieces 2 and 53. Note that the cylinder 69 corresponding to the second reversing guide 53 is actively operated in either the forward or backward direction by a pressure fluid supply/discharge device (not shown), but the other cylinder 68 is operated in either the forward or backward direction. The first reversing guide 52 is moved by being pushed by the second reversing guide 53, and the reversing is performed by moving the first reversing guide 52, without actively reversing by itself. A predetermined resistance force is generated, and the intermediate workpiece 13B can be reliably held.

A carry-in cylinder 70 is attached to the carriage 42 approximately parallel to the carry-in guide 50 and the first reversing guide 52 in the standby position.
A carry-in member 71 is provided which can be reciprocated approximately along both guides 50 and 52 at 0.0. This carry-in member 71 is configured so that both the unprocessed workpiece 13A and the intermediate workpiece 13B in both guides 50 and 52 can be pushed onto the lifting plate 30 at the same time.
It is provided across both guides 50 and 52.

In addition, the carriage 42 is approximately parallel to the unloading guide 51 and the second reversing guide 53 in the standby position (the unloading guide 51 is tilted in the vertical direction, so it cannot be said to be exactly parallel, but it is on a plane). (meaning that they are approximately parallel when viewed from)
is installed, and the carriage 42 is connected to the same cylinder 72.
During the synchronous parallel movement of the two guide grooves 32, 33 (in FIG.
2c, 33c) is provided with a carry-out member 73 that can be reciprocated approximately along the lines 2c, 33c). This carrying out member 73
Also, so that both the intermediate workpiece 13B and the completed workpiece 13C in the guide grooves 32c and 33c can be pulled out onto both guides 51 and 53 at the same time,
It is provided across both guide grooves 32c and 33c.

In addition, near the tip of the unloading guide 51,
As shown in FIG. 3, a stopper 75 is provided that moves up and down around a pin 74, and the completed workpiece 13 is carried out into the carrying out guide 51 and falls.
It is now possible to temporarily stop C here. This stopper 75 is integrally provided with an arm 76, and by pulling down this arm 76 with a trigger 78 provided in a cylinder 77 that is activated when the carriage 42 returns to its fixed original position, the stopper 75 is raised. I'm starting to get it.

Next, the overall operation of this device will be explained. First and second processing holders 1 on table 2
Processing holders 11a, 1 other than 1b, 12b
1c, 11d, 12a, 12c, 12d, etc.
Unprocessed, intermediate, and completed workpieces 13A, 1 that already correspond to the respective processing holders
3B and 13C are placed thereon and are continuously rotated in the direction of arrow A by the rotation of table 2. The clamp pieces 16 of the machining holder assemblies 10b and 10c are moved by the unclamping cam 28 as shown in FIGS. 2 and 3.
The lifting plate 30 of the processing holder assembly 10b, 10c is lifted to the raised position as shown by the solid line in FIGS. 2 and 3 by the lifting cam 38. It is being

On the other hand, the carriage 42 is in the fixed original position regulated by the stopper 48, the carry-in member 71 and the carry-out member 73 are in the retracted position shown in FIG. is also located in the standby position shown in FIG. Note that the unprocessed workpiece 13A has already been supplied to the carrying-in guide 50 by a parts transfer device (not shown), and the first reversing guide 52 has been supplied with the unprocessed workpiece 13A during the previous carrying-in/out operation.
The intermediate workpiece 13B taken out from the processing holder 11b is placed upside down so that the processed surface is facing downward. Further, the synchronization member 45 is the first
It is placed in the forward position shown in the figure and has abutment with the protrusion 44.

When the protrusion 44 comes into contact with the synchronization member 45 due to the rotation of the table 2 from the above state, the carriage 4
2 moves on the guide rail 40 in synchronization with the table 2 and starts parallel movement in synchronization with the table 2. At this time, the reciprocating device 47 is placed in a state where it can move freely, allowing the carriage 42 to move in parallel.

With the start of the synchronous parallel movement of the carriage 42, the cylinders 70 and 72 operate, and the carrying member 7
1 and the unloading member 73 are advanced. As these members move forward, the unprocessed workpiece 13A and the intermediate workpiece 13B on the carry-in guide 50 and the first reversal guide 52 move up and down from the lifting plate 30 of the empty processing holder assembly 10b. guide groove 32b,
33b, and on the other hand, the processing holder assembly 1
The intermediate workpiece 13B and the completed workpiece 13C in the guide grooves 32c and 33c of the lifting plate 30 at 0c are transferred onto the second reversal guide 53 and the unloading guide 51. This movement of carrying in and out each workpiece is carried out when the table 2 is moved to each processing holder assembly 10.
At the end of this operation, the synchronizing member 45 is moved backward by the operation of the cylinder 43, causing the carriage 42 to move in parallel with the table 2. unlock.

Following this release, the double action device 47 operates,
The carriage 42 is returned to the fixed original position regulated by the stopper 48. At this fixed original position, the unprocessed workpiece 13A is supplied to the carry-in guide 50 by a component transfer device (not shown) or the like. On the other hand, the processed workpiece 13C carried out onto the carry-out guide 51 slides down due to its own weight because the guide 51 is inclined, but is caught by a stopper 75 provided at the tip. Tenu. This stoppa 7
5, when the carriage 42 has returned to its fixed original position as described above, the cylinder 77 is operated and lifted, and the processed workpiece is delivered to a delivery section (not shown) provided corresponding to the tip of the delivery guide 51. 1
Emit 3C.

Preferably, the first reversing guide 52, which has become empty due to the carrying-in operation, is moved to the cylinder 68 at the same time as the carriage 42 starts returning to its fixed original position.
The second workpiece on which the intermediate workpiece 13B is placed is rotated about the shaft 54 by the unloading operation.
The intermediate workpiece 13B is placed on the reversing guide 53 of the intermediate workpiece 13B, and the intermediate workpiece 13B is held between the reversing guides 52 and 53. Next, the second reversing guide 53 is rotated by the cylinder 69 against the low resistance of the cylinder 68, and the intermediate workpiece 13B is rotated by both reversing guides 52 and 53 as shown by the imaginary line in FIG. While holding it, return the first reversal guide 52 to the original waiting position. Next, by operating the cylinder 69 in the reverse direction and returning the second reversing guide 53 to its original waiting position, the second
The intermediate workpiece 13B placed on the first reversing guide 53 is turned over and transferred onto the first reversing guide 52, returning to the state shown in FIG. 1 again.

Note that after the carriage 42 starts returning to its fixed original position, the synchronizing member 45 is moved forward again after a while, and comes into contact with the protrusion 44 of the next processing holder assembly 10c. The carriage 42 is caused to move parallel to the table 2 again in synchronization with the table 2, and the workpieces 13A, 13B, 13C are carried in and out of the processing holder assemblies 10c, 10d in the same manner as described above.

Furthermore, due to the above-mentioned carry-in operation, the roller 37 of the lifting plate 30 of the machining holder assembly 10b that has been supplied with the unprocessed and intermediate workpieces 13A and 13B is disengaged from the lifting cam 38 as the table 2 rotates. and descends around the shaft 31, and both workpieces 13
A and 13B are placed on the respective receivers 14 and 15 of the corresponding first and second processing holders 11b and 12b. Following this lowering of the elevating plate 30, the roller 26 of the clamp piece 16 and the roller 26 of the unclamping piece 16 come off from the unclamping cam 28.
Both workpieces 13A, 1 are pressed by the spring 20.
3B is clamped to the receivers 14 and 15.

In this way, the first and second processing holders 11b, 1
Both workpieces 13A and 13B clamped to 2b
have their upper surfaces ground while passing under the grindstone 3 due to the rotation of the table 2, and the unprocessed workpiece 13A becomes an intermediate workpiece 13B that has been subjected to the first processing, and the other intermediate workpiece The workpiece 13B is a completed workpiece 13C which has also been subjected to the second processing.
Thus, it faces the second reversing guide 53 and the unloading guide 51, and undergoes the unloading operation as described above.

In the embodiment described above, as means for inverting and transferring the intermediate workpiece 13B on the first processing holder 11 to the second processing holder 12, the first and second workpieces, which are open above each other, are used. reversing guide 52,
53 in the center thereof and a hollow shaft 55
An example has been shown in which when the intermediate workpiece 13B is rotated independently of each other around the center, the intermediate workpiece 13B can be rotated in a state where both are combined, and the intermediate workpiece 13B is transferred from one side to the other at the same time as the reversal. However, the first and second reversing guides 52 and 53 are cylindrical guides into which the intermediate workpiece 13B is inserted, and both guides are fixed to one shaft provided in the center, and the shaft is Both guides are the first and second processing holders 11, 1
2 so that they alternately face each other,
Further, in the above-described embodiment, only one of the first and second reversing guides 52 and 53 is rotated and the other is fixed, and the intermediate workpiece is attached to the reversing guide 52 or 53 on the rotating side. 13B
A gripping device may be provided, and the intermediate workpiece 13B may be gripped by the gripping device and transferred from one side to the other to perform inversion and transfer, etc.
It goes without saying that various changes can be made.

As described above, according to the present invention, members for carrying in unprocessed workpieces, carrying out processed finished workpieces, and carrying out, reversing, transferring, and reloading intermediate workpieces are mounted on a single carriage. In addition, the unprocessed and intermediate workpieces are brought in and the intermediate and completed workpieces are carried out using one loading and unloading member, respectively.
Further, a pair of reversals are provided for reversing and transferring the intermediate workpiece, respectively, corresponding to the positions before and after the reversal of the intermediate workpiece, and at least one of the intermediate workpieces is rotated about an axis located at the center thereof. All operations such as loading/unloading and reversing are performed rationally during one single synchronous parallel movement of one carriage, which shortens cycle time and increases machining capacity. In addition, the inverted intermediate workpiece is immediately returned to the machining holder assembly on which it was placed before being inverted by the next loading operation.
It is possible to reduce the number of workpieces that are in the process of being carried in as unprocessed workpieces until they are delivered as completed workpieces, especially at the beginning and end of processing. Idle running conditions can be kept to a minimum and machining efficiency can be improved. In addition, the structure of the device is simple and very compact, so it is economical and energy saving, and together with shortening the cycle time, it is possible to arrange the processing holders on the table quite densely. From this point of view as well, it is possible to obtain effects such as being able to improve processing ability.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts showing an embodiment in which the present invention is applied to a vertical rotary table type surface grinder, FIG. 2 is a sectional view taken along the line - - of FIG. 1, and FIG. 3 is a - of FIG. 1. 4 is a rear view of the reversing guide section as viewed from the Z arrow in FIG. 1, and FIG.
It is a sectional view taken along the line - in the figure. 1...Bed, 2...Table, 3...Whetstone, 10a
~d...Processing holder assembly, 11a-d...First processing holder, 12a-d...Second processing holder,
13A... Unprocessed workpiece, 13B... Intermediate workpiece, 13C... Completed workpiece, 16... Clamp piece, 20... Spring, 28... Gum for unclamping, 3
0... Lifting plate, 38... Lifting cam, 40... Guide rail, 42... Carriage register, 44... Protrusion, 45... Synchronization member, 47... Double action device, 48... Stopper, 50
... Carrying-in guide, 51... Carrying-out guide, 52...
First reversal guide plate, 53... Second reversal guide plate, 54... Shaft, 55... Hollow shaft, 6
3,64...Pinion, 66,67...Rack, 71
... Carrying-in member, 73... Carrying-out member, 75... Stopper.

Claims (1)

[Claims] 1. A first processing holder that holds an unprocessed workpiece on a circular table that continuously rotates in one direction, and a second processing holder that holds an intermediately processed workpiece. A supply device that arranges the tools at equal intervals and supplies the workpiece to the first holder on a carriage that is provided outside the table and is movable along an arcuate guide having the same center as the table. In a vertical rotary table type surface grinding machine, etc., which is equipped with a discharge device for discharging the workpiece from the device and the second holder, and is provided with a drive mechanism that reciprocates the carriage in synchronization with the table, (a) The first and second machining holders mounted on the carriage and adjacent to each other in the pair of machining holders are divided into two equal parts, with a bisecting line of the angle formed by the center lines as a swing center. (b) a set of double shafts each fixed to the double shaft and provided on a radial extension of the second and first processing holders; (c) a drive device that drives the reversing guide clockwise and counterclockwise independently of each other via the second heavy shaft; (d) the table; During the synchronous parallel movement with the first
The unprocessed workpiece on the supply guide that can be aligned with the processing holder and after the first processing is completed.
The workpiece that has been reversed 180 degrees and placed on the reversal guide on the radial extension of the second machining holder is placed on the first and second workpieces on the extension of the reversal guide.
(e) a carry-in device on the carriage that simultaneously carries the workpiece into the processing holder; (e) the workpiece in the first processing holder and the second processing holder after the first and second processing; and a carry-out device on the carriage that simultaneously carries out the workpieces after the second processing onto a guide for carrying out the workpieces that are provided on the radial extension of the second processing holder during synchronous parallel movement with the table. Equipment for loading and unloading and reversing workpieces.