DD205367A1 - SYSTEM FOR TIPLESS EXTERNAL ROUND GRINDING, IN PARTICULAR WAIST STORAGE RINGS - Google Patents

Abstract

The aim of the invention is the utilization of the performance of centerless external cylindrical grinding machines in the processing of rolling bearing rings with high reliability, gentle treatment and extensive lots. The object of the invention is to provide a system of conveying, handling, control and storage means together with a centerless external cylindrical grinding machine can be processed with the ring columns. The essence of the invention consists in the arrangement of two pallet stations, the ring columns ready. A manipulator transports the ring columns to two transport devices, which feed them alternately to a transport device for feeding the machine. After grinding, the rings again receive transport means to either side of another manipulator which places them in pallet stations and / or on a store located above the machine. From the memory, the ring columns are transported to the manipulator in front of the machine for repeated processing, but can also store them.

Description

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Title:

System for centerless external cylindrical grinding of particular rolling bearing rings

Field of use:

Machining of annular parts «in particular roller bearing rings on centerless external cylindrical grinding machines

Characteristic of the known technical solutions:

Are known devices for the mechanized workpiece flow annular workpieces, z. As gutters, magazines, order, feed and separating devices, devices for gripping and allocating, see Hesse / Zapf, linking equipment in manufacturing technology, VEB Verlag Technik, Berlin, 1970 and manufacturing technology u. Operation (1979) 4, 226-229.

-2M1982 * Ü13682

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Chain or cassette memories for ring-shaped parts according to the invention descriptions SU-178649-49c / 30 ~ 01 and 530777-B23Q, 7-10 have been found. Also found were conveyors in the form of transport rollers according to DD-WP 34420-67a 32/02 for cylindrical and annular workpieces.

The disadvantage is that these facilities are only parts of the workpiece flow and especially with their previous arrangement, the high performance of centerless external cylindrical grinding machines do not do justice. By their juxtaposition creates a high space requirement. The gentle handling of the workpieces in overlong roller tables is not sufficiently guaranteed. Especially with large rolling bearing rings, there are problems regarding functionally reliable delivery and damage to the circumference and end faces. The construction of the above-mentioned chain or cassette storage requires considerable production effort · Their application leads to additional space for their replacement. The continuous workpiece flow that must be secured during centerless external cylindrical grinding must be interrupted. "The conversion to other workpiece diameters is limited to narrow limits.

Also known is a solution in the form of a circular circulation, lined up with the rings to a horizontal column, supplied with a transport roller of a centerless external cylindrical grinding, ground, discharged with a transport roller, roll away in the transverse direction of the workpiece column in a roller table, back to a column Formed on a walkway, be promoted by this and get back on a roller table, to be formed before the grinding gap of the machine on the transport roller back to a column which is fed into the grinding gap «See Manufacturing Engineering and Operation (1976), 10, p , 599-602 / DD-WP 142988 u _# WP 142795-B23Q, 7/00.

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The disadvantage here is the limitation of the batch size due to the low storage volume, the complexity of conveying heavy workpiece columns by means of walking, the low utilization of the grinding machine or the frequent interruption or change of the grinding process by placing a new lot that is processed in several passes, the required occupancy of workers and noise pollution during ring conveyance ·

Object of the invention:

To provide a system for centerless external cylindrical grinding of particular rolling bearing rings with high reliability and high productivity, in which the performance of the grinding machine is largely utilized, the automatic workpiece flow frees workers from heavy physical work. Noise is restricted, a large workpiece area is detected with a small conversion effort and, in order to enable automatic operation over a very long period or during the processing of large batches by means of a large storage volume with a relatively small space requirement.

Explanation of the essence of the invention:

- The technical problem to be solved by the invention is to provide a system for centerless external cylindrical grinding of particular rolling bearing rings, consisting of a storage device for the workpieces «the front side lined up in a column are formed and the column of a transport device to a preferably centerless external cylindrical grinding machine is guided ·

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The ground workpieces are also to be removed and stored as a pillar by a transport device after the machine. The bearing rings of the machine are to be fed to the machine for repeated processing if a further grinding pass is to take place.

The features of the invention are that at least two pallet stations are present in front of the machine, on which pallets are provided one above the other, which carry a plurality of parallel and horizontal workpiece columns. The columns are transverse to the direction of passage through the machine ·

The workpiece columns occupy defined spaces on the pallets in known prism bars and places defined by face stops.

On the line of symmetry between the pallet stations, a manipulator in the direction of the grinding machine can be moved and positioned on a horizontal slide «

The manipulator has a gripping device that grips an entire column from the pallet «The gripper device consists of parallel guide rails, which are guided tangentially over the column.« The two guide rails each have a movable clamping bar arranged around the column below its center «Axial stops prevent tilting of workpieces«

The gripper device is radially extendable on the manipulator. It can be pivoted and moved vertically. Parallel to each pallet station, a known transport device for rolling bearings is arranged in the direction of the machine, which moves the workpieces to a gutter in cooperation with a respective vertically and horizontally movable guide mandrel ,

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The gutters run together in a switchable switch in cooperation with a counter above another transport device, the roller bearing rings take a rotated by 90 ° transport direction, which leads into the grinding gap of a centerless external cylindrical grinding machine.

Subsequent to the grinding gap, a measuring station and a known transport device for discharging the rings is arranged «This is followed by another switchable switch, which is connected to further gutters to 90 ° rotated transport means with arranged above these vertically and horizontally movable guide mandrels in operative connection. Between these transport devices is symmetrically another manipulator with gripper device, similar to that on the front of the machine. Parallel to the transport facilities are pallet stations as on the front and / or it is arranged a memory. The memory is located above the machine and consists of several superimposed levels. In each level, prism strips attached to roller chains with end stops receive workpiece columns transferred by the manipulator. The roller chains have known controllable drives for transport and positioning. The roller chains guide the columns to the manipulator in front of the machine, which places them on the pallet and / or on the conveyor. "The system is monitored by an electric control system which allows workpiece flow, number of passes through the machine, infeeds, manufacturing accuracy and other processes can run automatically.

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The device works as follows:

The workpiece columns are delivered to pallets and parked on the pallet stations. "The manipulator grips the workpiece columns on the pallets in rows and in bays, whereby the prism strips and end stops are to be removed when changing floors. The workpiece columns are taken over by the guide pin and deposited on the transport device. "The workpiece column moves in the direction of a channel, in which the rings individually roll off the column, pass through a switch to the feed device to the machine and line up again in the feed device to form a strand "As soon as the one work piece column is fed in, the switch switches over to the opposite transport equipment, which has now been occupied by a manipulator and guide pin with a workpiece column. After leaving the machine via the associated discharge device, the workpieces roll over a switch onto a gutter and there onto a transport device in which they line up again to form a work column. "A guide mandrel takes over the work piece column and transfers it to the manipulator" In At this time, the switch switches over to the opposite channel to the transport device. The manipulator transfers the workpiece column to the storage. The individual places of the storage levels are occupied consecutively until the entire workpiece lot is stored. Thereafter, the input of the workpiece columns from the pallets in front of the machine is completed. The manipulator standing in front of the machine now retrieves the individual workpiece columns from the storage and transfers them to the guide pin above the transport device in front of the machine ". Thus, the circuit is closed and any number of passes of the workpiece lot through the

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Machine is possible · After finishing, the workpieces are placed either on pallets behind the machine or after passing through the store on pallets in front of the machine «

Embodiment:

Fig. 1 shows a plan view of the system according to the invention

Fig. 2 shows a front view of the system

FIG. 3 shows a section through the system in the direction of passage of the workpieces

The setup is as follows:

In front of the centerless external cylindrical grinding machine 1 are 2 pallet stations 2 on which pallets 3 are located. The workpiece columns 4 are secured by prismatic strips with end stops not shown everywhere. "The manipulator 7 is located between the pallet stations 2" consists of 2 guide rails 9, 2 movable clamping strips 10 and axial boundaries 11 and which is located on a horizontal slide 12 "The manipulator 7 is moved horizontally and vertically and can swing 180 °"

The transport devices 13 face each other "They consist of a transport roller 14 and a Fuhr thorn 15" The channels 16 connect the transport means 13 via a switch 17 with a transport roller 18 as a feeder, wherein the feed device

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As well as the transport roller 19 are attached to the machine 1 as a discharge device · After leaving the grinding gap 20, the workpieces pass a measuring point 21 «

The further construction after the machine corresponds to the construction in front of the machine «

The memory 22 consists of several memory levels 23, which are arranged on a steel frame 24 with a walk-stage and drives 26 have "The workpiece columns 4 are secured by prism bars 27 and end stops."

Claims (1)

- · -. 240376 8 invention claims 1, system for centerless external cylindrical grinding of particular rolling bearing rings, in which the workpieces lined up to a column through the grinding gap of a grinding machine / characterized in that in front of the machine (1) at least two pallet stations (2) are present, on which one above the other pallets (3) are provided, which carry a plurality of parallel and horizontal workpiece columns (4), which are aligned transversely to the direction of passage through the machine that the workpiece columns (4) in known prism strips (5) and between end stops (6) defined places occupy that between the Pallet stations (2) a manipulator (7) in the direction of grinding machine (1) on a horizontal slide (12) is arranged movable and positionable, that the manipulator (7) has a gripper device (8) having axial stops (11) and from parallel Guide strips (9), which is guided tangentially over a workpiece column (4) n and the guide rails (9) each having a movable clamping bar (10) is arranged, which can engage around the column (4) below its center, that the gripper means (8) on the manipulator (7) extendable in the radial direction that they are around a vertical axis is pivotable and vertically movable, that parallel to the pallet stations (2) ready workpiece columns (4) transport devices (13) in the form of guide rollers (14) are arranged with vertically and horizontally movable guide pins (15), in cooperation be loaded with the gripper device (8) that to the 240376 8 Transport devices (13) connecting gutters (16) leading to a switchable switch (17) and rotate the roller bearing rings by 90 ° in the horizontal plane, that the rotated workpieces by means of a transport device (18) back to the column formed in the grinding gap (20) a grinding machine (1) get that eich to the grinding gap (20) connects a transport device that leads to another switchable switch (17), the rait gutters (16) is connected and the drain fins (16) the roller bearing rings to 90 ° rotated transport devices (13) with vertically and horizontally movable guide pins (15) arranged above them * that between these transport devices (13) another manipulator (7) with gripper device (8), the pallet stations (2) and / or a memory ( 22), that the memory (22) is located above the machine, consists of several superimposed planes (23) that in each plane (2 3) mounted on roller chains prism strips (27) with end stops (28) for receiving the manipulator (7) transferred workpiece columns (4) are present that the roller chains known controllable drives (26) for transport and positioning have that the memory (22) is in operative connection with the manipulator (7) in front of the machine (1). For this J ^ pages drawings