DE2442243A1 - HONSTEIN EXTRACTION DEVICE - Google Patents

Description

Toyo Kogyo Co., Ltd., α corporation

of Japan Representative: Kohei Matsuda,

President

No. 6047, Aza Shinchi, Fuchu-cho, Aki, gun,

Hiroshima-ken, Japan

Honing stone push-out device

The invention relates to a honing machine for polishing a trochoidal, multi-lobed or multi-lobed Inner surface of a workpiece. In particular, the invention is directed to an automatic honing stone push-out device for such a honing machine.

Usually, in honing stone push-out devices of the type mentioned, a Mohr number of honing stone holders is radially round arranged around oinon main body, which is fixed on a circuit ondon Honv / ello sits. Every honing stone holder can be used for

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BATH ORIGINAL

Radial polishing of an inner surface of a workpiece Ejected from the outside, namely under the direct one Effect of an associated piston-cylinder unit

However, such conventional devices have disadvantages. If namely the honing stones except for a predetermined one MaS are worn, they have to be advanced, i.e. readjusted, by the amount of wear by manually loosening the honing stones. This process diminishes the labor yield to a significant extent. In other words, this means that after a predetermined Extent of wear in the common devices the honing stone holder can be loosened in order to place spacers under the honing stones. The device is there quiet. The honing stones are thus gradually readjusted to the outside. This adjustment process is manual Inserting the spacers is very complicated and troublesome. It takes a considerable amount of time to set it up correctly of the spacers is required, resulting in a low labor yield.

There is also the following. When applied to honing a Such common devices without suitable locking means bring trochoid-shaped inner surface of a workpiece a number of disadvantages for the honing stones, since the radius of curvature of the trochoidal inner surface, on which the honing stones act, varies continuously. Due to the friction between the faces of the Workpiece to be polished and the honing stones

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large bending moments act on the latter. In addition, it is made by high bending moments acting on the honing stones required that the amount by which the honing stones protrude from the honing stone holders, below a predetermined Value must be, while at the same time the height by which the honing stones protrude from the holders, above one must be a certain value to the number of exchanges for the honing stones due to their wear during to reduce the polishing process.

These requirements, namely the honing stones firmly in the To arrange honing stone holders and to approximate them The honing stone push-out devices are used to allow a constant amount to protrude from the honing stone holders not fair, especially when it comes to polishing trochox-shaped surfaces acts.

The invention is therefore primarily aimed at a To create honing stone push-out device, which is easy to use and gives a high labor yield, wherein the disadvantages of conventional devices are essentially avoided. Furthermore, the device should after Work the invention precisely and have a lock that holds the honing stones in place. The honing stones should be easily replaceable and constantly protrude from the honing stone holders by an appropriate amount.

To solve this problem, the invention creates a honing stone push-out device with preferably three honing stones

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holders which, including predetermined angles, are attached to the outside of a "firmly seated on a revolving honing shaft Main body are arranged, each of the honing stone holders arranged in the main body by ejectors can be pushed radially outward. This device is according to the invention characterized by devices in each honing stone holder for advancing the honing stones, by devices for securely locking the honing stones in the outer areas of the honing stone holder, and through an automatic pressure cycle control that works under hydraulic pressure and the pushing device for the honing stone holder, the feed device for the honing stones and actuates the locking device for the honing stones.

In the device according to the invention, each honing stone holder be moved radially outwards, namely by the pushing devices, which are under hydraulic pressure from Piston-cylinder units arranged in the main body can be actuated, and the honing stones can also be operated radially to the outside readjusted or «advanced, namely by feed devices that are under hydraulic pressure work and sit in the honing stone holders. The honing stones can be safely locked in the advanced position or easily releasable with respect to the honing stone holders, namely by a simple wedge effect between two beveled ones Plates, which are arranged along the honing stones. This arrangement not only offers the possibility of the worn out Easily and effectively adjust or advance honing stones by the feed devices by the required amount

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to let, but it also works extremely effectively in the With a view to maintaining an appropriate level the honing stones. The latter applies in particular in connection with the polishing of trochoid-shaped surfaces. This does not apply the complicated prerequisite of manually inserting spacers for adjusting the height of the honing stones, such as it has so far been the case with conventional devices.

Further advantages and features of the invention emerge from the following description of preferred exemplary embodiments in connection with the accompanying drawing ₀ The drawing shows in:

1 shows a schematic, partially sectioned front view of an automatic honing stone push-out device including the associated hydraulic system;

Fig. 2 is a plan view of the device of Fig. 1;

Fig. 3 shows a section along the line III-III in Fig = 1;

FIG. 4 shows a section along the line IV-IV in FIG. 1 j

Fig. 5 is a schematic side view of a modification of the locking pin arrangement shown in Fig. 2}

Fig. 6 is a schematic front view of a comparison with FIG 1 ₀ modified AusführungsbeispielsJ

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7 shows a section along the line VII-VII in Fig. 6;

Fig. 8 is a section along the line VIII-VIII in Figure 6 _0;

FIG. 9 shows a section along the line IX-IX in FIG. 7.

It should also be pointed out that in all figures of the accompanying drawings, the same parts have the same reference numbers wear.

In the case of the automatic honing stone push-out device according to the invention According to Figures 1 to 4, a hexagonal main body A is provided, which is fixed on a circumferential Honing shaft S is seated. Furthermore, there are three honing stone holders 2 of approximately U-shape, from each of which is slidably received in a honing stone push-out device 1, specifically in every other side surface of the hexagonal main body A, thus including 120 to the neighboring. The honing stone holders are synchronized displaced radially inward or outward from each other under the action of a pressure cycle.

In order to shorten the description, reference is made in the following to only one of the three honing stone holders 2 according to the invention, since the other two have exactly the same construction, with the exception of the hydraulic system, which the

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three honing stone holders 2 operated at the same time.

According to FIG. 1, each of the three honing stone holders 2 has a holding section 3 in its outer area, which is designed in the shape of a channel and extends axially to the honing shaft S. The inner section of the honing stone holder is designed as a flange 4 and is slidably seated in a cylinder H1 in the main body A. Furthermore, a cylindrical section 5 is provided which integrally connects the holding section 3 and the flange 4 to one another. The cylindrical section 5 is slidably seated in a matching bore which is concentrically connected to the cylinder H1. The cylindrical section 5 of the honing stone holder 2 encloses a feed element 6 which also carries a U-shaped lifting fork 7 at its outer end. The inner end of the feed element is designed as a flange 8 and is slidably seated in a cylinder H2 within the cylindrical section 5 of the honing stone holder 2. A cylindrical section 6 ^{1 of} the feed element 6 is slidably received by an associated bore which is concentrically connected to the cylinder H2 stands.

A honing stone clamp 9 of approximately channel-like shape with a U-shaped cross-section is on its one side wall axially cut out in the direction of the honing shaft S to form a thin, low wall 9a. “A connecting bottom portion 9c of the honing stone clamp 9 has a slot in the middle section adjacent to the other side wall 9b (Fig. 3 and 4) to accommodate the U-shaped lifting fork 7 of the

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Feed element 6. The honing stone clamp 9 is received by the holding section 3 of the honing stone holder 2 and connected to the latter via a pin 11. The pin 11 passes through corresponding openings in the holding section 3 of the honing stone holder 2 and in the bottom section 9c of the honing stone clamp, perpendicular to the axis of the honing shaft S ₀ A locking plate 12 carries a plurality of punctiform projections or pawls 13 on the side surface which is adjacent to a honing stone 15. The other side surface 12a of the locking plate 12 is beveled Honing stone clamp 9 can be pressed on or released from this side wall by advancing or withdrawing a beveled pressure plate 16, which will be described later ) and between theirs r outer edge and the cutout 14a a further groove 14a ¹ carries. This feed plate 14 is carried by the U-shaped lifting fork 7 of the feed element 6.

It should be noted that the feed plate 14 and the honing stone 15 so displaceable in the holding portion 3 of the Honing stone holder 2 are arranged that they are moved against the surface to be honed of a workpiece W (Fig. 1) kanno

The pressure plate 16 has an elongated groove 17 (Fig. 4),

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and -was in its middle section, section 9c of the honing stone clamp 9 engages. Owns the pressure plate 16 has sufficient axial play. It lies on one side wall 9a of the channel-shaped honing stone clamp 9, next to and approximately parallel to of the locking plate 12. The one side surface 16a of the pressure plate 16 is beveled towards one end, namely opposite to the bevel of the surface 12a on the associated side of the locking plate 12. So the Pressure plate 16 between the side wall 9a of the honing stone clamp 9 and the locking plate 12 pushed forward, the locking plate 12 is pressed against the honing stone 15, to brace the latter. When the pressure plate 16 is withdrawn, however, the honing stone 15 is released ο

Fig.
A pair of compression springs 19 (3 and 4) lie between the locking plate 12 and the bottom section 9c of the honing stone clamp 9 in order to clamp the locking plate 12 in the advancing direction of the honing stone 15. A locking pin 20 (Fig. 2) is screwed into one end of the honing stone clamp 9 and passes through an opening 18b of a projection 18 which protrudes at right angles from one end of the pressure plate 16 in the direction of the locking plate 12, the locking pin sits in a projection 9b ¹ which protrudes at right angles from the associated end of the side wall 9b of the honing stone clamp 9 in the direction of the pressure plate 16. A compression spring 21 surrounds the locking pin 20 between the projection 18 of the pressure plate 16 and a head 20a at the other end of the locking pin 20. The locking pin 20 is therefore constantly tensioned in the direction shown by the broken arrow, ie _f the

BO9812 / 0322

ORIGINAL INSPECTED

Pressure plate 16 is subject to a bias in the direction of the solid arrow.

In particular from Fig. 3 it follows that a locking piston 25 for the honing stone is displaceable in a cylinder Hl im Main body A is arranged. Its piston rod 26 is firmly seated on a circular disc 27. The latter carries three radial arms 28 which extend outwardly against the associated Projection 18 of the pressure plate 16 extend, in such a way that its outer ends close to the inner surfaces of the Projections 18 are =

So when the locking piston 25 is moved outward, the ends of the arms 28 engage the projections 18 of the Pressure plates 16 and pull the latter against the action of the springs 21 to the outside.

It should also be noted that in the honing stone push-out device According to the invention, the honing stone clips 9, the locking plates 12, the honing stones 15, the pressure plates and the locking pins 20 can pivot about the pins 11 so that the honing stones 15 are able to during the Polishing process of the surface of the workpiece W to the following »

According to FIG. 1, a line P1 leads for hydraulic fluid 'from a pipe P to a chamber H1a above the flange of the honing stone holder 2 into the cylinder H1 provided in the main body A. This line can be via switching valves V1 and V2 can be connected to a pressure fluid source Ps.

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A branch pipe Ρα of the pipe P is connected to a control cylinder 22, the latter being connected to the two-way switching valve V2 via a further branch pipe P1b. The control cylinder 22 has a reciprocating piston 24, the downward stroke length of which is limited by an adjusting screw 23 which is screwed into the lower end of the control cylinder 22. The piston 24 is urged upward by a compression spring 29 disposed between the lower surface of the piston and the lower inner surface of the control cylinder. It can convey the hydraulic fluid into a chamber Ra located above the piston 24, through the switching valves V1 and V2 "

A line P2 for hydraulic fluid leads from a branch pipe P2a into a chamber H1b of the cylinder HL ₁ arranged inside the main body A, namely below the flange 4 of the honing stone holder 2. This line can be connected to the pressure fluid source Ps and a tank T, and although starting from the branch line P2a via the switching valve V2 in order to allow hydraulic pressure to push the honing stone holder 2 upwards. Accordingly, all three honing stones 15 can be moved against the surface of the workpiece W to be polished.

In the main body A there is another line P3 for hydraulic fluid, specifically below and in connection with a central bore 4a '. The latter leads through a tubular extension 4a, which extends from the flange 4 of the honing stone holder against the axis of the honing shaft S. The hole 4a ¹

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serves to feed hydraulic fluid into a chamber H2 _b below the flange 8 of the feed element 6, ie into the cylinder H2 which is formed in the honing stone holder 2. The line P3 is also connected to the pressure fluid source Ps and the tank P via a switching valve, not shown.

With this arrangement, a new honing stone 15 has been inserted into each of the three honing stone holders 2 according to FIG if the switching valves V1 and V2 are each brought into position a, the line P2 is connected to the oil tank T. and hydraulic pressure is applied to line P1. The honing stone holder 2 moves inwards, whereby the hydraulic pressure simultaneously in the upper chamber Ra and in the lower chamber Rb of the control cylinder 22 ' got. The piston 24 thus rises completely until it contacts the upper surface of the upper chamber Ra, namely this takes place on the basis of the differential areas of the piston 24 which is subjected to the hydraulic pressure.

If the switching valves V1 and V2 are respectively moved to the positions b in order to conduct the hydraulic pressure through the line P2 into the chamber H1, of the cylinder H1, the oil from the chamber H1 reaches the upper chamber Ra of the control cylinder 22, and through the line P1 and the branch pipe PIa _0. The piston 24 is consequently displaced downwards against the force of the compression spring 29 until its lower surface touches the tip of the adjusting screw 23. Each of the three honing stone holders 2 is thus increased by a predetermined amount

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rain the surface to be machined of the workpiece W pushed out. In other words, the push-out motion of the honing stone holder 2 is limited by that length section of the adjusting screw 23 which protrudes into the control cylinder.

If the hydraulic pressure is entered into the chamber 25b of the locking cylinder Hl via a hydraulic system (not shown) in order to move each of the arms 28 connected to the piston 25 in the direction indicated by the dashed arrow, the arm 28 engages the projection 18 of the pressure plate 16 on and moves the latter also in the mentioned direction against the action of the compression spring 21. Aufarund the inclined surfaces 16a and 12a on the pressure plate and the locking plate 12, the contact pressure of this locking plate against the honing stone 15 and the feed plate 14 is canceled. If, under these conditions, hydraulic fluid is entered into the chamber H2, of the cylinder H2, through the line P3 and the bore 4a ¹ , the feed element 6 moves in the direction of the vol.T / solid arrow and pushes the feed plate 14 and consequently the honing stone 15 outwards in the same direction. Since the locking plate 12 is no longer pressed against the honing stone 15 and the feed ^{plate 14, the feed plate 14 provided with the elongated cutout 14a and the groove 14a 1} ′ moves over the pawls 13, which are formed on the associated side surface of the locking plate 12. In this way, the honing stone 15 is pressed outwards to the extent that

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BAD ORICWNAU

that its outer surface on the surface to be polished of the V / part V / comes to the plant. The feed path is thus of the honing stone 15 is predetermined to an optimum extent in the manner described above.

So after the honing stone 15 has been advanced, is hydraulic pressure entered into the chamber 25a of the locking cylinder Hl to each of the arms 28 in the opposite direction accordingly to move the fully drawn arrow, by actuating the aforementioned hydraulic circuit. The arm 28 thus moves from the projection 18 of the pressure plate away, whereby the pressure plate 16 migrates quickly in the direction of the solid arrow, under the action the compression spring 21. The locking plate 12 is against

pressed the side wall 9b of the honing stone clamp 9 "under the wedge effect between the surfaces 16a and 12a of the pressure plate 16 and the locking plate 12, which are beveled in mutually opposite directions. The honing stone 15 comes into firm engagement between the side wall 9b and the locking plate 12 ud is thus held against the honing stone holder. If, under these circumstances, the point-like tips of the pawls 13 of the locking plate 12 reach the point-like tips of the recess 14a ¹ in the associated side surface of the feed plate 14, the locking plate 12 carried by the compression springs 19 moves afterwards above or below, so that the pawls 13 and the recess 14a ^{1 of} the plates 12 and 14 interlock in order to bring about a positive locking.

" ¹⁴ " S09812 / 0322

In this state, the pressure supply through the line P3 is interrupted. At the same time switches the switching valve V1 on the position α and connects the line P1 to the tank T, so that the Honsteinhalter 2 can be pushed, by the hydraulic pressure, the _b of the chamber H1 of the cylinder is fed H1. At the same time, the honing shaft S is rotated by a drive (not shown) in order to polish the inner surface of the workpiece W.

On the other hand, if the honing stones 15 have worn out, then you can continuously achieve an optimal adjustment by repeating the adjustment process described above.

To change the honing stones 15, remove the workpiece W from the main body A of the apparatus while applying hydraulic pressure is introduced into the chamber 25b of the locking cylinder Hl in order to release the locking by the locking plate 12. After the new honing stones 15 have been inserted into the honing stone holder 2, hydraulic pressure is applied to the other chamber, 25a of the locking cylinder Hl entered in order to tighten the locking plates and the honing stones 15 in the honing stone holder 2 to fix.

The tightening of each of the locking plates 12, which, as described, only takes place under the force of the compression spring 21, which pushes the pressure plate 16 inward, can be modified so that not only the force of the compression spring 21, but also the inward

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Tensile force of the piston 25 in the cylinder Hl come into use. In this case, the locking pin 20 is directly with the Arm 28 connected, as can be seen from FIG.

FIGS. 6 to 9 show a honing stone push-out device which is modified from that according to FIG. In this exemplary embodiment, the pawls 14a ¹ , which are seated on one side of the feed plate 14, are able to engage in pawls 32 on the associated side surface 31 ′ of a holding element 31. The latter sits in a channel-shaped recess 30 in the side wall 9b of the honing stone clamp 9o. The holding element 31 is ^{pressed by a pair of compression springs 33 against the pawls 14a 1 of} the feed plate 14. The compression springs 33 seated in an appropriate V / else between the holding member 31 and the bottom of the recess 30. Furthermore, _(the feed plate 14 is pressed by a pair of compression springs 34 against the pawls 32 of the holding element 31st The latter compression springs are located between the pusher plate 14 and the side wall 9b of the honing stone clamp 9.

So if the honing stones 15 are worn, the pressure plate 16 is pulled in the direction of the broken arrow (FIG. 7) to adjust their advance, namely, as in the embodiment of FIG the locking plate 12 then move in the direction of the broken arrow (Fig. g), under the action of the compression springs 34, the pawls 14a ^{1 of} the feed plate 14 out of engagement with the

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Ratchets 32 of the holding element 31 arrive in order to release the honing stone 15. When the feed element 6 is then moved outwards against the surface of the workpiece V /, in the same way as was described in connection with FIG. 1, the honing stone moves together with the feed plate 14 outwards in the radial direction until it touches the surface of the workpiece W to be machined. During this displacement movement, the engagement position between the pawls 14a ^{1 of} the feed plate 14 and the pawls 32 of the holding element 31 changes in a corresponding manner.

When each of the honing stones 15 by a predetermined amount has been advanced, the pressure plate 16 is displaced in the direction of the solid arrow according to FIG. 7, in the same way as was described in connection with the embodiment of FIG. the The pawls 14a 'of the feed plate 14 then move into a form-fitting manner Engagement with the associated pawls 32 of the holding element 31 to the honing stone 15 with respect to its direction of advance set and to press it against the side wall 9a of the honing stone clamp 9, under the action the locking plate 12. The honing stone 15 is secure between the locking plate 12 and the side wall 9a of the Honing stone clamp 9 held.

In connection with the above exemplary embodiment, as in connection with the first exemplary embodiment, for reasons of shortening the description

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only on one of the three honing stone holders 2 cover taken. Needless to say, the other two honing stone holders 2 have exactly the same construction exhibit.

As in the honing stone push-out device according to the invention the means for advancing the honing stones in those with push-out devices provided honing stone holders sit, so the worn honing stones can easily be around the required amount are advanced so that they can be economically over their entire amount up to wear off to the greatest extent »also becomes the required Time required to adjust or replace the honing stones in effectively reduced as far as possible.

In addition, the feed device can be fixed in the normal position by a locking device. Included Both devices are operated hydraulically instead of advancing the honing stones, as is the case with conventional ones Devices that must be done manually by inserting spacers under the honing stones. Increased for these reasons Not only does the labor yield increase considerably, but it is also possible to automatically replace the honing stones, as the exchange can be done from the front of the honing stone holder by only touching the worn honing stones takes out of the honing stone holders and inserts new honing stones.

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The use of the control cylinder to adjust the amount of ejection of the honing stones is particularly advantageous, because under these circumstances the honing stones can protrude from the honing stone holders by an optimal height. For this it is only necessary to adjust the free length of the adjusting screw to be selected accordingly in the control cylinder.

Regardless of the fact that the detailed description of the Invention based on the exemplary embodiments in connection with the accompanying drawings are different to those skilled in the art Changes and modifications are easily possible.

In summary, the invention creates a honing stone push-out device for a honing machine in which a plurality of Honing stone holders are arranged radially outside and around a main body, the latter being fixed on a rotating honing shaft sits. Each of the honing stone holders can be pushed out synchronously under hydraulic pressure and also has one Feed device and a locking device for the honing stones, the latter also being hydraulically actuated are. These features serve to determine the height by which the'Honsteine protrude from the honing stone holders, easy to adjust and the honing stones are secure against the honing stone holders to lock.

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Claims (7)

2U2243 Claims Honing stone push-out device for a honing machine for polishing a trochoid-shaped surface of a workpiece, with at least one honing stone holder for a honing stone, which is arranged radially on a main body firmly seated on a revolving honing shaft, and with a device for pushing out the honing stone holder radially out of the main body,
characterized, that for the automatic advancement of the honing stone according to its wear and for locking or releasing it the following features are provided with respect to the honing stone holder: a device (9, 14) for carrying the honing stone (15) { a device (6, 8) for advancing the support device (9, 14) under the action of hydraulic means, wherein the Feed device (6, 8) for automatic height adjustment of the honing stone engages on the support device (9, 14) and the latter is able to advance by a predetermined amount under the action of a control device (22, 23, 24), which is connected to the hydraulic means, and a device (12, 16) for locking and releasing the Honing stone (15) and the support device (14) by wedge effect, the latter device from the hydraulic means can be actuated and control or release means for the honing stone (15) with respect to the honing stone holder (2). 509812/0322 - 20 - 2. Honing stone push-out device for a honing machine for. Polishing of a trochoid-shaped surface of a workpiece, with at least one honing stone holder for a honing stone, which is arranged radially on a main body which is fixedly seated on a revolving honing shaft, and with a device for pushing the honing stone holder radially out of the main body,
characterized, that for the automatic advancement of the honing stone according to its wear and for locking or releasing it The following features are provided for the honing stone holder are: the honing stone holder (2), which can be pushed out under hydraulic pressure, has a piston (4) lower part which is displaceable in a cylinder (H1) of the main body (A), the outer part of the Honing stone holder is designed as a channel-shaped holding part (3), which has a similarly shaped bracket (9) takes in; Within the honing stone holder (2) a feed element (6) is arranged, the inner part of which as Piston (8) is formed and in a cylinder (H2) of the honing stone holder slides to the 'feed element under the Action of the hydraulic means to advance automatically, the outer part of the advance element being a feed rod (14) on which the honing stone (15) sits; the feed element (6) can be advanced by a predetermined amount under the action of a control device (22, 23, 24), which are connected to the hydraulic means for automatically adjusting the height of the honing stone 509812/0322 - 21 _ bound istj and a device (12, 16) for automatic Locking or releasing the feed plate (14) and the Honing stones (15) with respect to the clamp (9), the 'locking device (12, 16) from the hydraulic means is actuated and control or release means for the Honing stone with regard to the trough-shaped holding section (3) of the honing stone holder (2). 3. Honing stone push-out device according to claim 1 or 2, characterized, that the locking or releasing device for the feed plate (14) and the honing stone (15) has a locking plate (12) with a plurality of pawls on the surface facing the honing stone} that the feed plate (14) has a groove (14a) on its corresponding side surface ¹ ) carries; that the locking plate (12) is beveled on the opposite side surface; that a pressure plate (16) is also provided, the inclined side face of which of the locking plate (12) facing. Side surface is also beveled, namely opposite to the bevel angle of the ArretierpJ, atte; that the locking plate (12) and the pressure plate (16) together with the honing stone (15) and the feed plate (14) between the side walls (9a, 9b) of the clamp (9) so that when the pressure plate (16) is inserted between one side wall of the clamp (9) and the locking plate (12) of the honing stone (15) are pressed against the other side wall of the clamp (9), the recess (14a) of the feed plate (14) in the pawls (13) of the locking plate (12) intervenes. -22- 509812/0322 2ΑΛ2243 4. Honing stone push-out device according to one of the claims 1 to 3, characterized, that the locking or releasing device for the feed plate (14) and the honing stone (15) is a locking plate (12) having a flat side surface against the Honing stone and the feed plate is directed, the latter on a first side wall (9b) of the Clamp (9) facing side face a plurality of pawls (32) that a holding element (31) with corresponding The pawl (31 ') is provided on its side face facing the feed plate (14) and slidably in a recess (30) in the first side wall (9b) of the clamp (9) is seated so that the holding element (31) is pressed by compression springs (33) against the feed plate ″ (1.4); that the locking plate (12) on its other side surface is beveled; that the pressure plate (16) on its the beveled side surface of the locking plate (12) facing side is also beveled, namely opposite to bevel the locking plate (i2) j that the locking plate (12) and the pressure plate (16) together with the honing stone (15) and the feed plate (14) is arranged between the first side wall (9b) of the clamp (9) and a second side wall (9a) of the same, so that when the pressure plate (16) is inserted between the second side wall (9a) of the clamp (9) and the locking plate (12) the honing stone (15) is pressed against the first side wall (9b) of the clamp (9), the pawls (32) - 23 - 5098 12/0322 2U2243 the feed plate (14) into the pawls (31 ') of the holding element (31) intervene. 5. Honing stone push-out device for a honing machine for Polishing of a trochoidal surface of a workpiece, with a plurality of honing stone holders for honing stones, the is arranged at certain angular intervals radially on the outside of a main body that is firmly seated on a rotating honing shaft are, and with a device for synchronously pushing the honing stone holder radially out of the main body out, characterized, that accordingly for the automatic advancement of the honing stones the following features are provided for their wear and for locking or releasing them with respect to the honing stone holder are: any of the extendable under hydraulic pressure Honing stone holder (2) has an inner part designed as a piston (4) which is in a cylinder (H1) of the Main body (A) is displaceable, the outer part of the honing stone holder being designed as a channel-shaped holding part (3) which receives a similarly shaped bracket (9); Inside the honing stone holder (2) is a feed element (6) arranged, the inner part of which is designed as a piston (8) and in a cylinder (H2) of the honing stone holder slides to automatically advance the feed element under the action of hydraulic means, wherein the outer part of the feed element is a feed plate (14) on which the honing stone (15) sits} carries the feed element (6) can be adjusted by a predetermined amount - 24 - 509812/0322 advance, under the action of a Regeleinrichtunq (22, 23, 24) connected to the hydraulic means for automatically adjusting the height of the honing stone is; and a device (12, 16) for automatically locking or releasing the feed plate (14) and the Honing stones (15) with respect to the bracket (9), the Locking device (12, 16) from the hydraulic [means can be actuated and control or release means for the honing stone with respect to the trough-shaped holding section (3) of the honing stone content (2). 6. Honing stone push-out device according to one of the claims 1 to 5, characterized, , that the locking or releasing device for the feed plate (14) and the honing stone (15) has a locking plate (12) with a plurality of pawls on the surface facing the honing stone; that the feed plate (14) carries ^{a groove (14a 1) on its corresponding side surface;} that the locking plate (12) is beveled on the opposite side surface; that further a pressure plate (16) is provided, the side surface of which facing the beveled side surface of the locking plate (12) is also beveled, namely opposite to the angle of inclination of the locking plate; that the locking plate (12) and the pressure plate (16) together with the honing stone (15) and the feed plate (14) between the side walls (9a, 9b) of the clamp (9) so that when the 509812/0322 Pressure plate (16) between one side wall of the clamp (9) and the locking plate (12) of the honing stone (15) is pressed against the other side wall of the clamp (9), wherein
the recess (Ι4α ·) of the feed plate (14) in the
Pawls (13) of the locking plate (12) engages. 7. Honing stone push-out device according to one of the claims 1 to 6, characterized, that the locking or releasing device for the feed plate (14) and the honing stone (15) has a locking plate (12) which is directed with a flat side surface against the honing stone and the feed plate, wherein
the latter on a first side wall (9b) of the
Clamp (9) facing side surface carry a plurality of pawls (32)} that a holding element (31) with corresponding pawls (31 ') is provided on its side surface facing the feed plate (14) and sliding in a recess (30) in the first side wall (9b) the
Clamp (9) sits j that the holding element (31) is pressed against the feed plate (14) by compression springs (33) j that the locking plate (12) is beveled on its other side surface; that the pressure plate (16) is also beveled on its side facing the beveled side surface of the locking plate (12), specifically opposite to the beveling of the locking plate (12);
that the locking plate (12) and the pressure plate (16)
together with the honing stone (15) and the feed plate (14) between the first side wall (9b) of the clamp (9) and - 26 - 509812/0322 a second side wall (9a) of the same is arranged so that when the pressure plate (16) is inserted between the second side wall (9a) of the clamp (9) and the locking plate (12) of the honing stone (15) against the first side wall (9b) of the clamp (9) is pressed, the pawls (32) of the feed plate (14) in the pawls (31 ·) of the holding element (31) intervene. 509812/0322 Blank page