FR2833198A1 - DEVICE FOR THE TREATMENT OF MECHANICAL SURFACES OF MACHINED PARTS - Google Patents

Abstract

The present invention relates to a device for the mechanical surface treatment of workpieces with a circular plate (1) with cyclic drive, to which is connected according to a predefined angular distribution a plurality of workpiece spindles (2), and with a plurality machining stations (3) with machining tools (4) which can be driven in rotation for the surface treatment of workpieces clamped in the workpiece spindles. According to the invention, the circular plate (1) is an annular plate mounted around a vertical upright (6). The machining stations (3) are circumferentially connected (6).

Description

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Device for the mechanical surface treatment of machined parts
The present invention relates to a device for the mechanical surface treatment of workpieces with a circular plate with cyclic drive, to which is connected in a predefined angular distribution a plurality of workpiece spindles, and with a plurality of machining stations with machining tools that can be rotated for the surface treatment of the workpieces clamped in the workpiece spindles.

In addition there is provided at least one station for loading the workpiece pins and for removing the machined parts. The device described allows a multiprocessing of the workpieces in a clamping, the machining by removing material from the workpieces, such as milling, reaming, grinding, finishing and the like, as well as mechanical re-machining, such as shaping. with rotating brushes or polishing discs, which can be carried out. The device must in particular be operational for a multi-level finish.

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1 dispositif connu requiert beaucoup d'espace. Dans le dispositif connu du document DE 100 16 897 Al, l'installation de postes d'usinage supplémentaires se révèle impossible. Autre inconvénient, le plateau circulaire est difficilement accessible du fait que les postes d'usinage sont montés sur la face externe et de ce fait, le changement des outils d'usinage et les réglages des outils d'usinage s'en trouvent compliqués. In a device known from document DE 100 16 897 A1, on the basis of the present invention, the circular plate can be pivoted about a horizontal axis and is provided with four work-holding pins. On the periphery of the circular plate are fixed two machining stations for the rectification and the finishing of the parts to be machined. In addition, there is an installation for loading the workpiece spindles with the workpieces and for removing the workpieces. The

1 known device requires a lot of space. In the device known from document DE 100 16 897 A1, the installation of additional machining stations proves to be impossible. Another drawback is that the circular plate is difficult to access due to the fact that the machining stations are mounted on the external face and therefore the change of the machining tools and the adjustments of the machining tools are complicated.

 The object of the present invention is to provide a device for the mechanical surface treatment of workpieces, which allows a multiprocessing of workpieces in a clamping in more than two machining stations and is characterized by a compact configuration. As a result, the machining tools are easily accessible.

 In the context of a device having the configuration described above, the object is achieved according to the invention in that the circular plate is an annular plate arranged around a vertical upright and that the machining stations are connected circumferentially to the amount. The amount is advantageously made in the form of a column. The circular annular configuration tray allows easy

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 the installation of six or more workpiece spindles, which, like machining stations, are easily accessible from the outside. The workpiece spindles are provided with clamping devices for the workpiece as well as, suitably, devices for extracting the workpiece. The device according to the invention can be flexibly adapted to different machining tasks. It can be adapted according to the number of machining stations connected to the upright. The annular tray provides space for a large number of workpiece pins. Here, the annular plate also lends itself particularly well to clamping large workpieces.

 This results in numerous possibilities for the development of the device according to the invention. The circular plate can advantageously be mounted rotating around the upright by means of rolling or sliding bearings and can have an electromechanical rotary drive or a direct drive with numerical control.

 According to a preferred embodiment of the invention, a central control of the pins is provided for the work-holding pins, the work-holding pins being able to be individually coupled to the control of the pins, then again uncoupled from the latter. Alternatively, it is also possible to assign a separate drive to each workpiece spindle. In addition, the workpiece pins can be assigned stop devices for positioning the clamping device accommodating the workpiece. According to a preferred embodiment of the invention, at least six work-holding pins are fixed to the circular plate.

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 Machining stations, particularly those intended for finishing, advantageously have a linear adjustment device fixed to the upright, for example for feed movements with hydraulic control or with computer numerical control, a motorized spindle or a spindle with Motorized drive connected to the adjustment device and an oscillation drive for oscillating movements of the machining tool.

 The device according to the invention allows economical treatment of workpieces requiring multiprocessing on both sides. Thus, workpieces can easily be pre-finished, finished and brushed on both sides. In such an application case, the circular plate is advantageously provided with eight work-holding pins. On the upright there are two diametrically opposite machining stations for pre-finishing, finishing and brushing. In addition, there is fixed, on the periphery of the circular plate, in the sections between the machining stations assigned to brushing and to pre-finishing, a device for loading and unloading of the workpiece spindle as well as a device for turn, diametrically opposite. The workpieces pass successively through all the machining stations, a first front side being first of all pre-finished, finished and brushed, the workpiece then being turned before the second front side is then in the same way pre-finished, finished and brushed. It is also possible that the uniformities of the two faces of a workpiece are produced differently by the use of fixed angular adjustment of the finishing units. Thus the adjustment of the pivoting of a finishing unit does not need to be carried out to obtain the same result.

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 Insofar as workpieces only require treatment on one side, it is then possible to feed the treatment device simultaneously with two, or even several workpieces, and to work in synchronized fashion. For such an application, loading and unloading devices are provided on the periphery of the circular plate, thanks to which at least two workpiece spindles can be simultaneously supplied with workpieces and the unloaded workpieces. The machining stations, the number of which corresponds to the quantity of these loading and unloading devices, are equipped with the same machining tools, so that at least two workpieces can be processed simultaneously at least at two levels . According to a preferred embodiment of the invention, the circular plate is provided with eight work-holding spindles, two machining stations being provided on the upright for pre-finishing, finishing and brushing. Loading and unloading devices are attached to the periphery of the circular plate, with which two workpiece spindles can be simultaneously supplied with the workpiece and the workpieces removed.

 According to another embodiment of the invention, it is taught that on the amount is fixed a measuring system, in order to measure the workpieces before the treatment, during the treatment or after the treatment.

The positions of the measuring systems and the machining stations are adapted to the predefined angular distribution for the workpiece spindles.

 In the following, the invention will be explained on the basis of a drawing representing only an example of

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 production. The figures show schematically: Figure 1: a longitudinal section of a mechanical surface treatment device for workpieces, Figure 2: another embodiment of the device according to the invention, also in longitudinal section, Figure 3: a view in elevation of a device according to the invention for machining on both sides of the workpieces, Figure 4: an elevational view of a device according to the invention, with which two workpieces are brought simultaneously and treated synchronously in several machining stations.

 The basic configuration of the device shown in the figures comprises a circular plate with cyclic drive 1, to which is connected according to a predefined angular distribution a plurality of work holding pins 2, as well as a plurality of machining stations 3 with tools 4 can be driven in rotation for the surface treatment of the workpieces clamped in the workpiece spindles 2.

In addition, at least one station 5 is provided for loading the workpiece pins 2 with the workpieces and for removing the workpieces.

 The circular plate 1 is produced in the form of an annular plate mounted around a vertical upright 6, in the form of a column, and can rotate around the upright 6

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 by turning thanks to rolling or sliding bearings 7. It has an electromechanical rotary drive 8 (Figure 1) or a direct drive with numerical control 9 (Figure 2). At least six workpiece pins 2 are attached to the circular plate 1 at equidistant intervals, which are provided with a clamping device for the workpieces as well as an ejector. For driving the workpiece spindles 2, a central spindle control has been provided, which is not shown in the embodiment. The workpiece pins can be individually coupled to the spindle drive and then decoupled from it again.

 In FIGS. 1 and 2, it can be seen that the machining stations 3 are connected circumferentially to the upright 6.

They have a linear adjustment device 10 fixed to the upright 6, as well as a motorized spindle 11 fixed to the adjustment device 10. In addition, oscillating drives can be provided for the oscillating movements of the machining tools or else rotary tools controlled by the axis. Depending on the workpieces to be processed, the machining stations 3 are equipped with tools for machining by removing material, such as boring, tapping, turning, grinding, finishing, or tools for deburring. , brushing or other similar treatments. The device is preferably used for monolateral or bilateral finishing of workpieces, the internal, external and front surfaces of the workpiece being first of all pre-defined, before being finished and then brushed at a third post.

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 In an exemplary embodiment shown in Figure 3, the circular plate 1 is provided with eight workpiece pins 2. On the upright 6 are provided two diametrically opposed machining stations for pre-finishing 12, finishing 13 and brushing 14 In addition, there is fixed, on the periphery of the circular plate 1, in the sections between the machining stations 14, 12 assigned to brushing and to pre-finishing, a device 5 for loading and unloading of the work-holding spindles as well as 'a diametrically opposite turning device 15. The device shown in Figure 3 allows bilateral machining of the workpieces. The workpieces brought to the loading and unloading device 5 pass through the machining stations 12, 13, 14 for pre-finishing, finishing and brushing, the first face of the workpieces being treated. In another work phase, the workpieces then reach the turning device 15 where they undergo a rotation of 1800. Then, the second face of the workpiece is pre-finished, finished and brushed in the next machining station . Finally, in the next working cycle of the machine, the machined parts reach the loading and unloading device 5, where they are then ejected from the workpiece pins and discharged.

 The device according to the invention can be very simply fitted with a new tool for other machining tasks. In the context of the exemplary embodiment shown in FIG. 4, the circular plate 1 is also provided with eight workpiece carrier pins. The configuration shown in Figure 4 allows, at high speed, single-sided machining of surfaces

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 of workpieces. The upright 6 is connected to two machining stations for pre-finishing 12, finishing 13 and brushing 14. On the periphery of the circular plate 1 are fixed loading and unloading devices 5, by means of which two work-holding spindles are simultaneously supplied with workpieces and machined parts removed.

 Also within the scope of the invention is the fixing of at least one measurement system to the upright in order to measure the workpieces, the positions of the measurement system and of the machining stations being adapted to the predefined angular distribution for the workpiece pins.

Claims (11)

Claims 1. Device for the mechanical surface treatment of workpieces with a circular plate with cyclic drive (1), to which is connected in a predefined angular distribution a plurality of work holding pins (2), and a plurality of work stations machining (3) with machining tools (4) which can be rotated for the surface treatment of the workpieces clamped in the workpiece spindles, characterized in that the circular plate (1) is an annular plate mounted around a vertical upright (6) and in that the machining stations (3) are circumferentially connected to the upright. 2. Device according to claim 1, characterized in that the upright (6) is produced in the form of a column. 3. Device according to claim 1 or 2, characterized in that the circular plate (1) is rotatably mounted around the upright (6) by means of rolling or sliding bearings (7). 4. Device according to claims 1 to 3, characterized in that the machining stations (3) <Desc / Clms Page number 11>  have a linear adjustment device (10) fixed to the upright (6), a motorized spindle (11) connected to the adjustment device (10) and an oscillation drive for oscillating movements of the machining tool. 5. Device according to one of claims 1 to 4, characterized in that the circular plate (1) has an electromechanical rotary drive (8) or a direct drive with digital control (9). 6. Device according to one of claims 1 to 5, characterized in that a central control of the pins is provided for the workpiece pins (2), the workpiece pins (2) can be individually coupled to the control pins, then uncoupled from it again. 7. Device according to one of claims 1 to 6, characterized in that at least six workpiece holder pins (2) are fixed to the circular plate (1). 8. Device according to one of claims 1 to 7, characterized in that the circular plate (1) is provided with eight workpiece pins (2), in that on the upright (6) are provided two stations diametrically opposite machining for pre-finishing (12), finishing (13) and brushing (14) and in that it is fixed on the periphery of the circular plate (1), in the sections between the machining stations (14, 12) assigned to brushing and pre-finishing, a <Desc / Clms Page number 12>  device (5) for loading and unloading workpiece spindles as well as a diametrically opposite turning device (15). 9. Device according to one of claims 1 to 7, characterized in that are provided on the periphery of the circular plate (1) loading and unloading devices (5), by means of which at least two work-holding spindles (2 ) can be simultaneously supplied with workpieces and unloaded workpieces, in that the machining stations (3), the number of which corresponds to the quantity of these loading and unloading devices (5), are equipped with the same machining tools, so that at least two workpieces can be processed simultaneously. 10. Device according to claim 9, characterized in that the circular plate (1) is provided with eight work-holding spindles (2), in that two machining stations are provided on the upright (6) for pre-finishing ( 12), finishing (13) and brushing (14) and in that around the circumference of the circular plate are fixed loading and unloading devices (5), with which two work-holding spindles can be simultaneously supplied with work to be machined and the machined parts removed. 11. Device according to one of claims 1 to 10, characterized in that at least one measuring system is fixed to the upright (6) in order to measure the workpieces, the positions of the measuring system and the <Desc / Clms Page number 13>  machining stations being adapted to the predefined angular distribution for the workpiece spindles (2).