ES2222494T3 - APPARATUS FOR POLISHING AND METHOD. - Google Patents

Abstract

A HUMED METHOD OF APPLYING A SOFT PULIMENT IN WHICH THE FINAL PHASE PHASE (G) IS CARRIED OUT WITH AN ALKALINE POLISHING LIQUID AND THE REMAINING POLISHING PHASES (A, B) ARE CARRIED OUT WITH ANOTHER POLISHING LIQUID THAT IT'S ACID. A POLISHING DEVICE IS BUILT AS AN ELEMENT THAT AVOID DISCONNECTION IS AVAILABLE AT THE PREVIOUS END OF AN AXIS (510) TO PERFORM THE WORK; THE OUTER PART OF THE POLISHING DISK (520) IS CONTACTED WITH THE ELEMENT THAT AVOID DISCONNECTION, A TIGHTENING NUT (540) IS GEARED THROUGH WITH THE POLISHING DISK (520) AND THIS POLISHING DISK (520 ) FIRMLY FIXED TO THE AXIS (510) BY MOVING THE TIGHTENING NUT (540) THROUGH THE AXIS. IN ADDITION, A METHOD OF TREATMENT OF THE SURFACE IS PRACTICED, IN SUCH WAY THAT EACH SURFACE TREATMENT IS PERFORMED AFTER THE WORK HAS RECEIVED A POLISH WITH ROLLER, BEFORE OR AFTER THE SURFACE TREATMENT. ADDITIONALLY, A WORK ASSISTANCE DEVICE INCLUDES A RECEPTION DEPOSIT OF THE POLISHING MEDIA (762) THAT HAS A POLISHING MEDIA RECEIVED INSIDE AND A WORK HELP ARM (792). IN ADDITION, THE PULIMENT MEDIA (762) USED BY THIS APPLIANCE TO POLISH THIS COMPOSITE OF A SOFT MATERIAL IN GRANULES OR SMALL BLOCKS OF THE SOFT MATERIAL.

Description

Polishing apparatus and method.

Background of the invention

The present invention relates to an apparatus for drum polishing, as indicated in the preamble of the claim 1. An example of such an apparatus is described in US 3 623 278A.

With drum polishing devices conventional, each piece is subjected to polishing allowing a polishing medium flow into a container to receive the medium of polishing while the piece is immersed in the polishing medium received in the container to receive the polishing medium.

However, with polishing devices of conventional barrel, since each piece is immersed in the middle of drum polishing received in the container to receive the medium polishing while still holding, the inconvenience of It is difficult to polish the piece in a short time.

US 3 623 278A describes or suggests a apparatus for finishing a piece by abrasive that includes a container for receiving a grinding medium provided with a grinding media received inside and an arm to hold the piece, said container to receive the medium abrasive includes an upper end hole, said arm for holding the piece can rotate around an axis line of the same and the piece can be detachably attached to the end front of the part support arm. Said support arm of the piece can be moved forward and backward in the axial direction and said part support arm can be Rotating horizontally.

The present invention has been made to eliminate, among other details, the inconvenience inherent in the Conventional technique commonly used. Therefore an object of the present invention is to provide an apparatus for polishing drum which ensures that functional performance can be improved of each polishing operation on the drum.

In accordance with the present invention, the apparatus for drum polishing it is built with the features of claim 1.

Brief description of the drawings

Figure 1 is a perspective view that shows a first embodiment of the present invention.

Figure 2 is a perspective view that it shows the status of fixed and unbound assumed by the device for drum polishing depicted in figure 1.

Figure 3 is an illustrative view showing the forward and backward travel mechanism that you can use for a support arm of the piece arranged in the support unit of the part shown in figure 1.

Figure 4 is an illustrative view showing a rotating mechanism that can be used for a plate inversion arranged in the part support unit represented in figure 1.

Figure 5 is a sectional view showing a second embodiment of the present invention.

Figure 6 is a sectional view showing an apparatus which is not part of the present invention.

Figure 7 is a sectional view showing a third embodiment of the present invention.

Description of preferred embodiments

Figure 1 is a perspective view that shows a piece support unit that can be used in a drum polishing apparatus constructed in accordance with a first embodiment of the present invention in which a part is held in the polished state, Figure 2 is a view in perspective that shows the state of fixed and not fixed of the piece In the drum polishing apparatus shown, Figure 3 is a illustrative view showing the movement mechanism towards front and back for a support arm of the piece in the piece support unit and figure 4 is a view illustrative showing a rotating mechanism for a plate investment arranged in the support unit of the piece.

In Figure 1 and Figure 2, the reference number 9B designates a drum polishing apparatus and the reference number 910 designates a base plate for the drum polishing apparatus 9B. Reference number 920 designates a container for receiving the polishing medium and this container for receiving the polishing medium 920 is mounted on the base plate 910. The container for receiving the polishing medium 920 is designed to have a cylindrical shape configuration. that can rotate around an axis line thereof in a circumferential direction by the
drive suitable drive means (not shown). Reference number 921 designates a polishing medium and this polishing medium 921 is received in the container to receive the polishing medium 920. All kinds of normally available material such as ceramic grains or the like can be used. Incidentally, a wet polishing process can be used to practice a polishing process and, alternatively, a dry polishing process can be used to practice the polishing procedure.

Reference number 922 designates a hole upper which is formed at the upper end of the container to receive the polishing medium 920 and a piece (a wheel of aluminum usable for vehicles or similar) W, which is going to Describe below, it is submerged in the polishing medium 921 to through the upper end hole 922.

Next, reference number 911 designates a support frame and this support frame 911 is placed vertically on the base plate 910. The support frame 911 is made to extend in the vertical direction to reach the substantially upper end of the container to receive the polishing medium 920.

Reference number 930 designates a license plate inversion and this 930 inversion plate is rotatably mounted in the support frame 911 through a rotating shaft 931. This inversion plate 930 can rotate within a range of approximately 180º based on the rotation of the rotating shaft 931 (that is, within the range defined by the state represented in Figure 1 and the state represented in Figure 2). In addition, as a first drive motor 932 is shown in figure 4 is mounted on support frame 911. While the force of motor rotation 932 is reduced in the deceleration state, the previous turning force is transmitted from a pulley 933 of the first drive motor 932 to a pulley 935 of the pivot shaft 931 through a V-belt 934, so the plate 930 inversion can be rotated alternately within the range of  approximately 180º.

Reference number 940 designates a bench of support and this support bench 940 is fixed to the plate inversion 930 through a pair of 941 squares. This plate of support 941 is mounted on support frame 911 in the state of leaning forward (the front end side of a support arm of piece 960, which will be described more forward, it is represented in the forward direction). Should indicate that the angle of inclination of the support bed 940 It can be adjusted.

Next, a plate of 950 slip on the rear surface of the bed of support 940 so that it moves in the forward direction and back along the inclined surface of the plate 940 support. This 950 sliding plate can be moved with relation to support bench 940 in the forward direction and backwards by operating a screw and nut mechanism 95. Incidentally, reference number 9511 designates the part of the screw of the screw and nut mechanism 95 arranged in the back surface of support bench 940 and the number of reference 9512 designates a pair of nut parts arranged in the 950 sliding plate. When a second motor is driven drive 952, causing the screw part 9511 to rotate, the nut parts 9512, that is, the sliding plate 950 is moves in the forward and backward direction through the threaded coupling of screw part 9511 with parts of nut 9512.

With reference to figure 1 and figure 2 another the reference number 96 designates a support arm of the piece and, as shown in figure 3, this support arm of piece 960 is made to extend from the plate 950 slip. One piece (an aluminum wheel that can be used for vehicles or similar) W is mounted so that it can be disassemble the front end of the support arm of part 960 with the help of an air plate (not shown) so that the piece W is immersed in the polishing medium 921 received in the container for receiving the polishing medium 920. In addition, a third 961 drive motor is mounted on the plate slip 950. The support arm of part 960 can be rotated around an axis line thereof by the transmission of the turning force of the third drive motor 961 to the arm of support of part 960 in decelerated state. Incidentally, the support arm of part 960 can be rotated intermittently in the normal sense as well as in the opposite direction.

The operation of the polishing apparatus

First, as depicted in the figure 2, the inversion plate 930 is arranged outside the container for receive polishing medium 920 by actuating the first 932 drive motor, causing the 931 spindle to rotate (refer to the state represented by dashed lines in the figure 4). At this time, the front end piece of the arm of piece support 960 assumes an upwardly inclined state. While maintaining this state, an operator places part W in the front end of the support arm 960 so as to allow that is fixed to the support arm 960.

After that, as depicted in the figure 1, the inversion plate 30 is placed inside the container for receive the polishing medium 920 by driving the first motor of drive 932, causing the rotation shaft 931 to be rotated by what the wheel W is immersed in the polishing medium 921 contained in the container to receive the polishing medium 920 in state flowing Incidentally, while the wheel W remains in the polishing medium 921 in submerged state, the support arm of the piece 960 can be shifted fragmented in state vibratory After completing the polishing operation, the plate Investment 930 is placed outside the container to receive the polishing means 920 driving the first drive motor 932, causing the rotating shaft 931 to rotate. At this time, the piece front end of the support arm of piece 960 assumes a been tilted up. While maintaining this state, the operator disconnects the wheel W from the support arm of part 960 and, after that, place the next piece on the arm of support of part 960 so as to allow the next piece be fixed on the support arm of part 960.

Incidentally, when used as a means of polishing a soft material, such as sponge, rubber, a soft plastic or similar, in the polishing apparatus 9B, each finishing polishing operation can be achieved with a high performance. In addition, the soft material may be coated in the surface of each hard grain or of each small hard block. He Coated hard grain or small coated hard block can be use as polishing medium of the aforementioned type. After the drum polishing operation is completed, a surface treatment is carried out as per example coating, electrodeposition, aluminum treatment or similar. The concept of surface treatment is included all kinds of surface treatment generally available.

Figure 5 shows a drum polishing apparatus which is a second embodiment of the present invention. In Fig. 5, the reference number 8B designates a drum polishing apparatus and the reference number 860 designates a drive section for actuating the drum polishing apparatus 8B. Reference number 861 designates a cylindrical container to receive the polishing medium and this container to receive the polishing medium 861 is mounted in the drive section 860. The container for receiving the polishing medium 861 can rotate around a line of section axis
860 drive in circumferential direction
by actuating the drive section 860. Reference number 862 designates a polishing medium and this polishing medium 862 is received in the container to receive the polishing medium 861. All kinds of normally available material such as ceramic grains can be used. or the like for polishing medium 862. In addition, a wet polishing process can be used for the polishing process and, alternatively, a dry polishing process can be used for the polishing process.

Reference number 863 designates a hole upper end which is formed at the upper end of the container to receive the polishing medium and a piece (a wheel of usable aluminum for vehicles or similar) W that is going to describe below is submerged in polishing medium 862 to through the upper end hole 811.

Next, reference number 870 designates a motherboard which is integrated with the
drive section 860 and reference number 871 designates a support column which is vertical on the base plate 870. The support column 871 is caused to extend in a vertical direction to reach the substantially upper end of the container to receive the medium polishing 861.

Reference number 880 designates a square of fixing and this fixing square 880 is arranged so that oscillates on the support column 871. Specifically, the 880 fixing bracket can oscillate around a point O at Vertical surface length. The reference number 890 designates a support bench and this 890 support bench is mounted on fixing bracket 880 through means swivels 881. With this construction, the support bench 890 can oscillate along the vertical surface along with the 880 fixing bracket and can also rotate or oscillate around the P axis line by actuating the turning means 881.

Reference number 891 designates an element of support and this support element 891 is arranged in the support bench 890 in such a way that it can be moved in forward and backward direction. In addition, the number of reference 892 designates a support arm and this support arm 892 is fitted inside the support element 891 in such a way which allows it to move forward and towards behind. The reference character W designates a part (a wheel of aluminum usable for vehicles or similar) and this part W is fixed to the front end of the support arm 892 through a 893 air plate so as to allow it to soak in the middle polishing 862 received in container to receive polishing medium  861

The operation of the polishing apparatus constructed in the manner previously mentioned.

First, as represented by dashed lines (dotted and dashed line), the support arm 892 is mounted to assume the position in which its end upper is placed directly above the element of support 891 and, after that, retracts in the direction towards down. While maintaining the previous state, the W wheel is fixedly mounted on the upper end of the support arm 892 with the help of the 893 air plate. After that, as represents in dashed lines (two dotted line and line), the support arm 892 is made to extend in the direction towards above. So, as represented by a continuous line, the support arm 892 is made to swing around point O together with support element 892 and support bench 890 at along the vertical surface, so the wheel W is submerged in polishing medium 862 which is kept in a flowing state in the container for receiving the polishing medium 861. Incidentally, while the wheel W is submerged in the polishing medium 862, the support arm 892 is made to move fragmentedly in  vibration state After completing the polishing operation, the support arm 892 is made to oscillate around the point O in opposite direction together with the support bench 890 along the vertical surface and, then, as represented in lines dashed (two-dot line and line), support arm 892 is maintained so that it assumes the position in which the end front of the support arm 892 is placed directly by on top of the support element 891. After that, the arm of 892 support retracts in the downward direction to assume the state represented by the dashed line (dotted lines and stripe). While maintaining the previous state, the wheel W is disconnects from the front end of support arm 892. A then the functional steps are repeated above mentioned.

Incidentally, when used, as a means of polishing, a soft material, such as sponge, rubber, a soft plastic or similar, in the 8B polishing apparatus, each finishing polishing operation can be achieved with a high performance. Incidentally, the soft material may be coated on the surface of each hard grain or each small hard block so that it allows the coated hard grain or the Small coated hard block can be used as a means of polishing of the aforementioned type.

After the operation of drum polishing, a treatment is carried out on the piece surface such as coating, electrodeposition, treatment with aluminum or similar. You can use any kind of material normally available to get the surface treatment

For example, it can be indicated as a piece usable to carry out the present invention a wheel of aluminum usable for vehicles or similar. However, the The present invention should not be limited solely to the wheel of aluminum as a work piece but all the products, each of them usable as a piece in the concept of part of the present invention.

Generally, a procedure of wet type polishing or a dry type polishing procedure to polish the polished surface of a piece in the presence of a polishing agent, as the polishing process of the present invention. In this case, the number of polishers used to Carrying out the present invention may be limited to one. Alternatively, a plurality of polishers can be used to carry out the present invention. Incidentally, you can indicate a polishing disc as an example that represents a polisher.

To carry out the present embodiment, it is you can use an ordinary wet type polishing procedure and an ordinary dry type polishing procedure, for practice the wet type polishing procedure and the polishing process of the dry type in which the surface of a  piece is subjected to polishing in the presence of a polishing agent fed between the polished surface of the piece and the surface Working of the polishing wheel.

In addition, to carry out the present invention any type of polishing procedure can be used drum such as a drum polishing process of fluid, a vibration drum polishing procedure or similar, as drum polishing procedure. Further, any type of polishing agent can be used as a polishing agent normally used polishing, such as ceramic grains or Similary.

In addition, the drum polishing operation led carried out as a preliminary step to the polishing step of the dry type is You can use as the so-called coarse polishing operation.

In addition, the drum polishing operation led carried out as a preliminary step to the polishing operation of the type wet has the same functional effect as the operation of polishing of the dry type and therefore can be used as the called intermediate polishing step.

In addition, the drum polishing operation led carried out as a subsequent step to polishing operation of the type wet has the same functional effect as the operation of wet type polishing and therefore can be used as the called finishing polishing step.

Figure 6 shows an apparatus for polishing drum which is not part of the present invention.

In Figure 6, reference number 710 designates a container to receive the polishing medium of an apparatus for drum polishing 74. A polishing medium (aggregate) 720 is received in the container to receive the polishing medium 710. Incidentally, any kind of means of Normally used polishing, such as ceramic grains or similar, as polishing medium 720.

Reference number 711 designates a hole upper end formed in the upper end of the container for receive polishing medium 710 and the inside of the container to receiving polishing medium 710 is communicated with the atmosphere to through the upper end hole 711.

Reference number 712 designates a port of feeding of the polishing medium and this feeding port of the polishing medium 712 is formed in the bottom part of the container for receiving polishing medium 710.

A polishing medium 72 contained in the container to receive polishing medium 710 it is made to fall naturally inside through the feeding port of polishing medium 712. The intensity of the pressure generated by the fall of the medium of polishing 720 is gradually reduced as the polishing medium 720 is progressively removed from the container to receive the polishing medium 710.

Reference number 730 designates a socket guide and this guide sleeve 730 is adjusted to the part of the bottom of the container to receive the polishing medium 710 of such way that allows guide sleeve 730 to rotate. In addition, the reference number 731 designates a flare-shaped bushing and this flare-shaped bushing constitutes a piece of the bushing of guide 730 arranged in the lower part of the guide bushing 730. The function of guide sleeve 730 will be described more ahead.

The reference character W designates a wheel of aluminum usable for vehicles or similar (corresponding to the word "work" in the present invention). This wheel W can rotate around an axis line O while it is subjected to vibration. Incidentally, when the wheel W turns, the 730 guide bushing including flare 731 bushing It is turned with vibration.

When polishing medium 72 is caused to fall naturally down from the container to receive the medium polishing 710 towards the surface of the wheel W while this wheel W rotates under vibration, polishing medium 720 reaches continuously the surface of the wheel W through the bushing of guide 730 with any substantial space between the container for receive polishing medium 710 and guide sleeve 730. The medium polishing 720 is discharged in the downward direction through a plurality of holes 751 and 752.

Incidentally, as mentioned before, the feed pressure intensity generated by means of polished 720 to be fed to the wheel W is reduced as polishing medium 710 is progressively removed from the container to receive polishing medium 710. Therefore, although use a single kind of medium 720, the surface of the wheel W is can undergo rough polishing and, in addition, the surface of the wheel W can be continuously subjected to medium polishing and polishing Finishing.

After the download of the polishing medium 720 below the area placed below the wheel W, that is, after the inside of the container for receive the polishing medium 710 remain empty, the polishing medium 720 is returned back to the container to receive the means of polishing 710 using suitable means (not shown). After of this, the wheel W is continuously subjected to a polishing again coarse, medium polishing and finishing polishing. The practical scope achieved by each polishing operation can be changed adding air or water under pressure so that the medium of Polished 720 be compressed by air or water under pressure.

After the operation of polished, the W wheel is given a surface treatment, such as for example coating, electrodeposition, treatment with aluminum or similar To carry out the surface treatment above, you can use any kind of process of surface treatment normally available.

Since the feeding of the polishing medium to the surface of the piece is achieved by attributing it to the fall natural polishing medium, little noise is generated and also The amount of energy consumption can be minimized.

Since the guide bushing is arranged between the feeding port of the container to receive the polishing medium and the surface of the piece, feeding the Polishing medium to the piece can be achieved without losses.

Additionally, when the polishing medium received in the container to receive the polishing medium can be compress by using appropriate means (no represented), you can change the practical scope achieved by Each polishing operation carried out on the piece.

Figure 7 shows an apparatus for polishing drum constructed in accordance with a third embodiment of the present invention

In Figure 7, reference number 78 designates a drum polishing apparatus and the reference number 760 designates a drive section for operating an apparatus for drum polishing 78. Reference number 761 designates a cylindrical container to receive the polishing medium and this container for receiving polishing medium 761 is mounted on the drive section 760. The container to receive the medium polishing 761 can rotate around an axis line of the drive section 760 in circumferential direction by operating drive section 760. The reference number 762 designates a polishing medium and this polishing medium is received in  the container to receive the polishing medium 761. It can be use any kind of polishing medium normally used, as ceramic grains or the like, as polishing medium 762. Incidentally, the polishing procedure can be practiced in according to a wet type polishing process or a process of dry type polishing.

Reference number 763 designates a hole upper end which is formed at the upper end of the container to receive the polishing medium and a piece W is submerged in polishing medium 762 through the end hole upper 763.

Next, reference number 770 designates a motherboard which is integrated with the
drive section 760 and reference number 771 designates a support column which is vertical on the base plate 770. The support column 771 extends in a vertical direction to reach the substantially upper end of the container to receive the polishing medium 761 .

Reference number 780 designates a square of fixing and this fixing square 780 is arranged so which oscillates on the support column 771. Specifically, the mounting bracket 780 can oscillate around a point O at Vertical surface length. The reference number 790 designates a support bench and this support bench 790 is mounted on mounting bracket 780 through means swivels 781. Therefore, the support bench 790 can swing along the vertical surface along with the square of fixing 780 and, in addition, the support bench 790 can rotate or well swing around the P axis line using the turning means drive 781.

Reference number 791 designates an item of support and this support element 791 is arranged on the support bench 790 in such a way that it moves in the direction forward and backward. In addition, reference number 792 designates a support arm and this support arm 792 is adjusted to the support element 791 in such a way that it allows  move forward and backward in relation to the support element 791. It should be noted that the address to front and back of support arm 792 is coincident with the forward and backward direction of the support element 791. The reference character W designates a part (a wheel of aluminum usable for vehicles) and this part W is fixed to the front end of support arm 792 through a plate of air 793, so the piece W is immersed in the polishing medium 762 received in container to receive polishing medium 761.

The operation of the polishing apparatus constructed in the manner previously described.

First, as represented by dashed lines (dotted and dashed lines), the support arm 792 is mounted in such a way that the upper end of the arm of 792 support is placed directly above the arm of support 792 and, after that, support arm 792 retracts in the direction down. While maintaining the state above, the part W usable for vehicles or similar is mounted on the front end of the support arm 792 using the air plate 793, so that part W is mount on the support arm 792 with the help of the air plate 793. After that, as represented by dashed lines (two-dot line and stripe), support arm 792 is made to be extend in the upward direction. Then as represented by continuous line, support arm 792 is made that oscillates around point O along with bench 790 along of the vertical surface, so that the wheel W is immersed in the polishing medium 762 which is kept in a flowing state. Incidentally, while part W is submerged in the middle of polished 762, the support arm 792 is made to move from fragmented form with the state of oscillation maintained. After complete the polishing operation, the 792 support arm is made that oscillates around the point O in the opposite direction, along with the support element 791 and support bench 790, along the vertical surface, the support arm 792 is maintained  to assume the vertical state with the front end thereof placed directly above the support element 791, as It is represented in dashed lines (two-dot line and line), and after that, the support arm 792 moves in the direction down to assume the state represented by the dashed line (dotted and dashed lines). While maintaining the previous state, the wheel W is disconnected from the front end of the 792 support arm. Next, the steps are repeated Functional mentioned above.

Incidentally, when a material is used soft such as sponge, rubber, soft plastic or similar, in the form of grain or small block, as polishing medium usable in the polishing device 78, each polishing operation of Finishing can be carried out with high performance. Incidentally, the soft material may be coated on the surface of each hard grain or of each small hard block, of so that it can be used as this kind of means of polished.

After the operation of drum polishing, a treatment is carried out on the piece W surface, such as coating, electrodeposition, treatment with aluminum or similar. In the concept of treatment superficial is included all kinds of treatment of the surface generally available, as mentioned before.

The piece W can be used to carry out the third embodiment of the present invention can be a piece that has previously been subjected to a superficial treatment and, alternatively, it can be a piece that has not been subjected to any type of surface treatment.

While the present invention has been described before with respect to the preferred embodiments thereof, it must indicate that the present invention is not limited only to these preferred embodiments but various changes can be made or modifications without departing from the scope of the present invention, as defined in the appended claims.

Claims (3)

1. Drum polishing apparatus in which said apparatus includes a container for receiving a polishing medium (920) provided with a polishing means (921) received therein and a part support arm (960), said container to receive the polishing means includes an upper end hole (922) said part support arm (960) can rotate around an axis line thereof and a part (W) can be detachably attached to the front end of the support arm of the piece (960), in which this support arm (960) consists of a front end piece to detachably hold this piece (W) and a rear end piece which is rotatably supported by a bench of support (940) rotatably mounted on a support frame (911) fixed to the container to receive the polishing medium (920) through an inversion plate (930), said part support arm can be rotatably displaced from the position placed substantially directly above said upper end hole within the range defined by said container to receive the polishing means along the vertical surface and first drive means (932) are in drive connection with a rotating shaft (931 ) rotatably positioned on the support bed (940) and fixed to the reversing plate (930), characterized in that a few second drive means (952) are in drive connection with a sliding plate (950) positioned so Sliding on the support bench and turning means (961) are fixed to rotate the support arm, the reversing plate can rotate around the longitudinal axis of the rotating shaft (931) between two extreme positions, in one of these extreme positions the piece (W) is inside the container to receive the polishing medium (920) and in the other of the two extreme positions the piece (W) is outside the container to re The polishing medium and the sliding plate (950) can be adjusted in the direction of the support arm (960) and because the support arm (960) can be retracted by means of turning means to rotate the part ( W) when submerged in the polishing medium (921) contained in the container to receive the polishing medium (920). 2. Drum polishing machine according to claim 1 characterized in that the support bed (940) and the reception plate (930) are connected to each other by means of brackets (941) and the inclination between the reception plate being adjustable (930) and the support bench (940). 3. Drum polishing machine according to claim 1 or claim 2 characterized in that the container for receiving the polishing medium (920) is designed to have a cylindrical configuration to be held on a rotating base plate around a line of shaft in circumferential direction by means of fourth drive means.