EP3259099B1 - Procédé de pierrage de forme et installation d'usinage - Google Patents

Procédé de pierrage de forme et installation d'usinage Download PDF

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Publication number
EP3259099B1
EP3259099B1 EP16704610.1A EP16704610A EP3259099B1 EP 3259099 B1 EP3259099 B1 EP 3259099B1 EP 16704610 A EP16704610 A EP 16704610A EP 3259099 B1 EP3259099 B1 EP 3259099B1
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Prior art keywords
bore
diameter
honing
measuring
values
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German (de)
English (en)
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EP3259099A1 (fr
Inventor
Fabio Antonio XAVIER
Joachim Weiblen
Florian KRANICHSFELD
Oliver Bachmann
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Elgan Diamantwerkzeuge GmbH and Co KG
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Elgan Diamantwerkzeuge GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/08—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving liquid or pneumatic means

Definitions

  • the invention relates to a honing method for machining the inner surface of a bore in a workpiece using at least one honing operation according to the preamble of claim 1 and a machining system configured to carry out the honing method according to claim 9.
  • a preferred area of application is the honing of cylinder running surfaces in the manufacture of cylinder blocks or Cylinder liners for reciprocating engines.
  • cylinder running surfaces in cylinder blocks (cylinder crankcases) or cylinder liners of internal combustion engines or other reciprocating machines are exposed to strong tribological stress during operation. Therefore, when manufacturing cylinder blocks or cylinder liners, it is important to machine these cylinder running surfaces in such a way that later, under all operating conditions, adequate lubrication is ensured by a film of lubricant and the frictional resistance between parts that move relative to one another is kept as low as possible.
  • Honing is a machining process with geometrically undefined cutting edges.
  • an expandable honing tool is moved back and forth within the bore to be machined to generate a stroke movement in the axial direction of the bore at a stroke frequency and at the same time rotated at a predeterminable speed to generate a rotary movement superimposed on the stroke movement.
  • the cutting material bodies attached to the honing tool are fed via a feed system with a feed force and/or feed speed acting radially to the tool axis and pressed against the inner surface to be machined.
  • honing marks a cross-hatch pattern typical of honing occurs on the inner surface with crossing traces of processing, which are also referred to as "honing marks".
  • the friction component of the piston group can be as high as 35%, so a reduction in friction in this area is desirable.
  • a technology that is becoming increasingly important for reducing friction and wear is the avoidance or reduction of cylinder distortions or deformations of the engine block (cylinder crankcase) during assembly and/or during operation.
  • a cylinder bore should typically have a bore shape that deviates as little as possible, e.g. a maximum of a few micrometers, from an ideal circular cylinder shape.
  • significant form defects disortions
  • the causes of delays or deformations are different. These can be static or quasi-static thermal and/or mechanical loads or dynamic loads.
  • the construction and design of cylinder blocks also have an impact on the tendency to deform.
  • the sealing function of the piston ring pack is typically impaired by such hard-to-control deformations, which can increase blow-by, oil consumption and friction.
  • the so-called form honing is a technology which is intended to ensure or approximate the creation of an ideal form after assembly or in the operating state of the engine by inverting the cylinder distortions (creating a negative form of the error) during processing.
  • Honing is used to create a bore shape that deviates from the circular-cylindrical shape on the unclamped workpiece. Borehole shapes of this type are generally asymmetrical in the axial direction and/or in the circumferential direction, because the deformations of the cylinder block are also generally not symmetrical. In the operating state, the ideal circular cylinder shape should result so that the piston ring pack can seal well over the entire circumference of the bore.
  • the bore shape is measured during and/or after a shape-generating honing operation to determine actual shape values. A difference between the actual shape and the target shape is processed to correct the infeed control.
  • WO 2014/146919 A1 which discloses the preamble of claim 1, describes a honing method for form honing in which a bore that is rotationally symmetrical with respect to the bore axis is produced, which has a narrower cylindrical bore section near the bore entry and then, i.e. further away from the bore entry, a has widening bore section with axially variable diameter.
  • honing tools which have at least one ring-shaped cutting group with cutting material bodies which are designed as honing segments which are wide in the circumferential direction and narrow in the axial direction. When using such honing tools, bore shapes with axial contours can be machined particularly precisely and economically.
  • a bore that is rotationally symmetrical with respect to a bore axis is produced by means of honing, the shape of which deviates from a circular cylinder.
  • the bore has a circular-cylindrical first bore section and, adjoining it, a non-circular-cylindrical second bore section, the diameter of which changes in the axial direction.
  • the circular-cylindrical first bore section is usually located directly on the entry side of the bore, while the second bore section is further away from the bore entry and has a larger diameter than the first bore section, so that the bore extends at least over a section in the direction of the end of the bore that is remote from the entry expanded. Additional bore sections may be present.
  • the diameter of the (circular-cylindrical) first bore section is measured in at least one first measurement plane in the region of the first bore section in order to determine a first diameter value.
  • the diameter of the second bore section is measured in at least one second measurement plane in the area of the second bore section in order to determine a second diameter value.
  • the order of these measurement steps is basically any, but it is often useful to measure first in the first bore section and then in the second bore section.
  • the second diameter value is then evaluated using the first diameter value to determine actual shape values representing an actual shape of the bore.
  • the second diameter value is evaluated in relation to the first diameter value determined in the circular-cylindrical first bore section.
  • the first diameter value is used in the evaluation step as a workpiece-internal reference value for determining the dimensions.
  • the actual shape values determined in this way are then compared with target shape values in order to determine shape deviation values.
  • a subsequent honing operation is then controlled depending on the shape deviation values.
  • this re-measuring strategy uses the first diameter value determined in the circular-cylindrical first bore section as a reference value for the evaluation of those diameter values which are determined by measurement in the (usually more difficult to assess) non-circular-cylindrical second bore section.
  • the first bore section or the first diameter value determined therein thus serves as a workpiece-internal reference for the entire measurement.
  • a significant improvement in precision is achieved in embodiments in which, when measuring the diameter of the first bore section, a first diameter is measured in two or more first measuring planes axially offset from one another and a mean value of the first diameters is formed to determine the first diameter value.
  • the referencing to the diameter values of the first bore section is thus less susceptible to accidental incorrect measurements or accidental local shape deviations within the first bore section.
  • the arithmetic mean of several measurements is usually determined. Although measurements in two first measurement planes that are axially offset from one another can be sufficient, measurements are preferably made in three or more first measurement planes. In particular, measurements can be taken at exactly three first measurement planes. In this way, a good compromise can be achieved between the measurement accuracy that can be achieved and the total measurement time required for the measurement.
  • a second diameter is measured in an end section of the second bore section remote from the first bore section and a prewidth value is determined from the second diameter in the end section and the first diameter value.
  • the "oversize" is defined in this application as the difference between the bore diameter at the bore end remote from the inlet and the bore diameter in the cylindrical bore section.
  • the prewidth value can be determined, for example, from the difference between the second diameter determined in the end area and the first diameter value.
  • the end section provided for the measurement is preferably located in the third or in the fourth of the axial length of the second bore section, far from the entry, ie at a relatively large axial distance from the first bore section.
  • an axial measurement interval between adjacent second measurement planes is preferably selected such that this axial measurement interval is smaller than an axial measurement interval between adjacent first measurement planes. It is therefore measured in the non-circular-cylindrical bore section with a higher axial resolution (or with a smaller distance between adjacent measurement planes), while a coarser grid of measurement planes can be provided in the circular-cylindrical first bore section. As a result, the total measurement time required for the measurement can be optimized without any substantial loss of measurement accuracy.
  • An axial measurement interval between immediately adjacent measurement planes can be, for example, 50% or less and/or 40% or less and/or 30% or less than an axial measurement interval in the first bore section in the second bore section. It is also possible to select an inverse ratio of the axial measuring intervals (coarser raster in the second hole section) or to work with the same axial measuring interval over the entire length of the hole.
  • First diameter values and second diameter values of a bore are preferably stored in a memory of a control device in the form of a data record representing the actual shape of the bore. This makes the values available for later processing.
  • the associated diameter values are measured in two measuring directions running perpendicular to one another in one measuring plane.
  • the measured values obtained in this way can be averaged.
  • This type of measurement also allows indications of possible critical shape deviations, i.e. deviations from the desired rotationally symmetrical bore shape. It can also be sufficient to measure only in a single diametrical measuring direction.
  • the measurements are preferably carried out with a pneumatic measuring system.
  • Non-contact pneumatic measuring systems with sufficient measuring accuracy are available and sufficiently robust to be used permanently in production-related areas.
  • the honing process can be carried out with differently designed honing tools.
  • An expandable honing tool is preferably used during machining, which has an expandable, ring-shaped cutting group with a plurality of cutting material bodies distributed around the circumference of the tool body in an end region of a tool body remote from the spindle, with an axial length of the cutting material body being smaller than the effective outer diameter of the ring-shaped cutting group when completely withdrawn cutting material bodies.
  • suitable honing tools with one or two ring-shaped cutting groups and with a single widening or double widening are in WO 2014/146919 A1 specified. The revelation of the WO 2014/146919 A1 is made to this extent by reference to the content of this description.
  • piezoelectrically controlled honing tools can also be used.
  • the invention also relates to a machining installation configured to carry out the honing process.
  • This can be a honing system with a specialized honing machine or a machining system with another machine tool that offers the functionalities required here.
  • the processing system preferably has a re-measuring station separate from a honing unit, to which the workpiece is transferred for the measurement after the end of processing.
  • a re-measuring station separates from a honing unit, to which the workpiece is transferred for the measurement after the end of processing.
  • measurements can possibly overlap with a honing process.
  • the diameter measurements can also be carried out using a measuring system integrated into a honing tool.
  • FIG. 1 shows a schematic longitudinal section through an embodiment of such a bore 110 in a workpiece 100 in the form of an engine block (cylinder crankcase) for an internal combustion engine.
  • the target shape of the bore is rotationally symmetrical with respect to its bore axis 112 and extends over a bore length L from a bore inlet 114 facing the cylinder head in the installed state to the bore outlet 116 at the opposite end.
  • the bore can be divided into several adjacent sections different functions, which merge smoothly, ie without the formation of steps or edges.
  • a first bore section 120 at the inlet end has a first target diameter DS1 and a first length L1.
  • the first target diameter is present over the entire first length L1, so that the first bore section has a circular-cylindrical shape.
  • the first bore section transitions steplessly into an axially narrow transition section with a transition radius R1 into a second bore section 130, which extends from the transition section to the outlet-side end of the bore.
  • the second bore portion 130 is generally conical or frusto-conical in shape and extends a second length L2.
  • the second bore section consistently has an inside diameter (second target diameter) DS2 that is larger than the first target diameter DS1, with the second target diameter increasing continuously linearly in the axial direction, starting from the transition section toward the end of the bore.
  • the cone angle ⁇ (angle between the axis of the bore and a surface line of the second bore section running in an axial plane) can be, for example, in the range of less than 1°, possibly also less than 0.2°.
  • the difference between the target diameter DS1 in the cylindrical bore section and the target diameter at the bore exit 116 is referred to here as the target value for the "pre-width".
  • the first length L1 can be between 10% and 60% of the bore length L, for example.
  • the second length L2 is typically greater than the first length and is often between 30% and 80% of the bore length L.
  • the transition section is very short compared to the adjacent bore sections. Deviations from these geometric conditions are also possible.
  • the difference in diameter between the first target diameter DS1 and the second target diameter DS2 in parts further away from the inlet is well outside the tolerances typical for honing, which for a cylindrical shape are in the order of magnitude of a maximum of 10 ⁇ m (based on the diameter).
  • the maximum diameter difference i.e. the front width
  • the front width can be between 20 ⁇ m and 500 ⁇ m, for example.
  • the lengths of the outer bore sections and the radius of the transition section can be optimized in such a way that low blow-by, low oil consumption and low wear of the piston rings result in typical engine operating conditions.
  • the shape of the bore means that the bore is comparatively narrow in the area near the inlet, so that the piston rings of the piston running in the bore are pressed against the inner surface 118 of the bore under high ring stress.
  • the piston which is accelerated by the combustion, then moves in the direction of the bore outlet, with the piston rings first passing through the transition section and then through the conical second bore section with the continuously expanding inner diameter. From the transition section, the piston rings can gradually relax, with the seal remaining adequate because the pressure difference across the piston rings decreases.
  • the ring pack reaches its lowest stress.
  • a continuous (over the entire bore length L) circular-cylindrical bore with a slight undersize relative to the target diameter SD1 is produced in the first bore section.
  • a long-stroke honing tool with relatively long honing stones can be used for this purpose, for example.
  • This honing operation can be performed as an intermediate honing operation after a previous pre-honing operation.
  • the honing tool 200 has a single ring-shaped cutting group 220 with cutting material bodies distributed around the circumference of the tool body, which can be advanced or retracted in the radial direction to the tool axis 212 by means of a cutting material body infeed system (not shown in detail) (see double arrows).
  • the cutting material bodies are designed as honing segments, the width of which in the circumferential direction is significantly greater than their length in the axial direction.
  • the bodies of cutting material responsible for removing material from the workpiece are concentrated in an axially relatively narrow zone, ie a ring of the cutting group, and take up a relatively large proportion of the circumference of the honing tool.
  • bore shapes can be produced with a relatively high material removal rate, in which bore sections of different diameters in the axial direction border each other.
  • the honing tool is coupled in an articulated manner to the honing spindle of a honing machine in order to permit limited mobility of the honing tool in relation to the honing spindle.
  • a multi-axis joint 210 is formed on the spindle-side end of the honing tool, for example a cardan joint or a ball joint.
  • honing tools suitable for this process can be used, in particular honing tools such as those in WO 2014/146919 A1 are disclosed to the applicant.
  • honing tools such as those in WO 2014/146919 A1 are disclosed to the applicant.
  • the relevant disclosure content of this application is incorporated into the content of the present description by reference.
  • the expansion of the honing tool can be controlled, for example, depending on the stroke, in such a way that the control of the infeed system for the radial infeed of the cutting material body can be combined with the control for the stroke position (in Axial direction) is coupled.
  • This can be done, for example, in such a way that the infeed force and/or the infeed speed of cutting material bodies of the honing tool are controlled as a function of the stroke position of the honing tool.
  • the infeed force would then increase when the honing tool moves downwards (in the direction of bore outlet 116) and decrease when it moves upwards (in the direction of the first bore section).
  • Other procedures are also possible, in particular those as in the WO 2014/146919 A1 are described.
  • a re-measuring operation is carried out on the finished workpiece at a separate measuring station from the honing unit. If the measurement shows that the values utilize the permitted tolerance range of the measured actual shape of the bore by more than 30%, 40%, 50% or 60% (e.g. with 40% utilization, there is a tolerance reserve of 30% for the upper and lower tolerance limit), corresponding compensation signals can be generated in order to work with changed honing parameters during the subsequent honing of a next bore and thereby achieve the desired target shape with better precision.
  • the diameter of the nominally circular-cylindrical first bore section 120 is measured in three measuring planes M1-1, M1-2 and M1-3 that are axially offset relative to one another. These are at equal axial distances, each offset axially from one another by a first measurement interval MI-1.
  • the corresponding diameter values are denoted as D1, D2 and D3.
  • the effective diameter is saved as the first diameter value to describe the actual shape.
  • the individual measured values D1, D2 and D3 are also saved together with the associated axial positions of the measuring planes.
  • the first diameter value D eff determined in this way serves as a reference for the diameter values in the conical second bore section.
  • diameter measurements are carried out in three second measuring planes M2-1, M2-2 and M2-3, which are axially offset from one another, in order to determine the associated second diameter values D4, D5 and D6.
  • the second measurement planes are at equal axial distances from each other, offset axially by a second measurement interval MI-2.
  • the second diameter values (D4, D5 and D6) obtained in this way are then automatically evaluated in a comparison operation using the first diameter value (D eff ) in order to determine actual shape values which represent the present cylindrical-conical actual shape of the bore.
  • Shape deviation values are determined from a comparison of the actual shape values with the target shape values specified by the specification. Subsequent honing operations are then controlled depending on the form error values. This makes it possible, among other things, to carry out diameter compensation in the event of diameter deviations of the conical bore section in relation to the cylindrical part of the cylinder bore (first bore section).
  • the effective diameter D eff which was determined for the cylindrical first bore section 120, can be compared with that diameter value D6 which was determined in the second measurement plane M2-3 furthest away from the entrance to the borehole in an end section EA of the second borehole section remote from the borehole. If the axial position of the measuring plane M2-3 is known, the difference between the effective diameter D eff in the first bore section and the diameter D6 in the lowest measuring plane M2-3 can be used to calculate the actual pre-width of the bore shape, i.e. the actual pre-width. If necessary, the difference between the actual pre-width and the target pre-width is compensated for in the next processing cycle. The same applies to diameter deviations in the cylindrical area.
  • a possible correction scenario or compensation scenario is explained below using Table 1.
  • the starting point here is a honing process in which a circular-cylindrical bore shape is first produced in an intermediate honing operation ZH by means of honing and then the desired bore shape with a cylindrical first bore section and conical second bore section is produced in a form honing operation FH by axially different amounts of material removal in the second bore section is produced.
  • the circular-cylindrical first bore section or the cylindrical area is abbreviated to "ZB" and the conical second bore section or the conical area to "KB".
  • the abbreviation KOMP-ZH stands for a compensation in the Intermediate honing stage
  • the abbreviation KOMP-FH stands for compensation in the form honing stage.
  • the term compensation here means that the honing parameters are changed in relation to the honing parameters of the previous machining in order to avoid or reduce a determined deviation from the desired shape as far as possible during the next honing machining.
  • the abbreviation VW stands for the determined actual value of the front width.
  • the second line shows, for example, which measures are initiated by the control if the measurement shows that the diameter (symbol " ⁇ ") in the cylindrical area ZB is in order ("OK") or within the tolerances, however, the front width VW is too small.
  • the other rows of the table are to be interpreted accordingly.
  • a machining system For permanent recording of the bore geometry during form honing during series operation, a machining system is provided with a measuring station downstream of the honing machine, in which the finished honed components can be measured using a pneumatic measuring mandrel (i.e. by air measurement). The measurement results are fed back into the control of the honing machine in order to be able to react immediately to any deviations in shape when machining the next workpiece.
  • the measuring station is configured in such a way that the axial contour can also be recorded and selected.
  • a measuring system for example, with a pneumatic measuring mandrel 400 according to 4
  • the system can also be used to record the axial contour in the cylinder bore by changing the control software, ie by changing the test plan.
  • two measuring channels are available, each with two measuring nozzles 410-A1, 410-A2 (measuring direction A) and 410-B1 arranged diametrically opposite one another in order to be able to measure the diameter in two measuring directions A and B perpendicular to one another.
  • Pneumatic plug gauges work according to the nozzle flapper principle. For the measurement, compressed air is blown out of the measuring nozzles in the direction of the bore wall. The resulting dynamic pressure in the area of the measuring nozzles can serve as a measure for the distance between the measuring nozzle and the wall of the bore.
  • a transducer connected to the measuring nozzle via a pressure line converts the (pneumatic) pressure signal into a voltage signal that can be further processed electrically. Instead of the pressure, the volume flow of the compressed air can also be used for evaluation.
  • the bore diameter in the measuring plane can be determined at a given diametrical distance between the measuring nozzles.
  • Pneumatic plug gauges enable non-contact measurement regardless of the material of the measurement object and, within the scope of their measurement range, high measurement accuracies, which in the case of final measurement units are usually well below a micrometer, for example in the range of 0.2 ⁇ m to 0.3 ⁇ m with repeated measurements .
  • the measurement is controlled in such a way that the axial measurement intervals MI-2 between immediately consecutive measurement planes in the second bore section 130, in which the diameter changes continuously, for example, are smaller than the measurement intervals MI-1 in the circular-cylindrical first bore section 120, in which the diameter is nominally the same in all axial positions.
  • the conical shape of the bore which deviates from the circular-cylindrical shape, can be recorded very precisely by a measuring interval of, for example, 3 mm in the second bore section 130 .
  • a larger measurement interval eg 10 mm
  • Permissible minimum and maximum values are specified for each measuring point or each measuring plane. In the event of deviations, compensation takes place on the respective honing spindle, for example in the manner explained in connection with Table 1. In addition, the values of a hole can be further processed, displayed in a diagram and permanently stored in a database.
  • a dwell time in the respective measurement level of the order of 0.5 s can be sufficient to obtain sufficiently accurate measurement values. This makes it possible to reliably measure the diameter in a standard cycle time of 25 to 30 s, for example.
  • the direction of measurement can also be freely selected, so that measurements can be taken both from the entry-side end to the end far from the entry and from the (wider) end far from the entry to the (narrower) bore entry.
  • the desired axial contour in the second bore section is the contour of a simple cone with a continuous (linear) increase in diameter from the end of the first bore section in the direction of the end of the bore.
  • Other bore shapes are also possible, e.g. a trumpet shape or a bell shape or bottle shape of a bore.
  • a conical second bore section could be adjoined in the direction of the bore end remote from the inlet, which third bore section is circular-cylindrical or can have a different cone angle than the second bore section.

Claims (10)

  1. Procédé de pierrage destiné à l'usinage de la surface intérieure d'un alésage (110) dans une pièce (100) à l'aide d'au moins une opération de pierrage, en particulier au pierrage de surfaces de glissement de cylindre lors de la fabrication de blocs-cylindres ou de chemises de cylindre pour des machines à piston alternatif, dans lequel
    pendant une opération de pierrage, un outil de pierrage (200) expansible, accouplé à une broche, est déplacé en va-et-vient à l'intérieur de l'alésage pour produire une course dans la direction axiale de l'alésage et est en même temps mis en rotation autour d'un axe d'outil pour produire un mouvement rotatif superposé à la course, et
    un alésage à symétrie de révolution par rapport à un axe d'alésage (112) et s'écartant de la forme cylindrique circulaire est produit qui présente une première partie d'alésage (120) cylindrique circulaire et de manière adjacente à celle-ci une deuxième partie d'alésage (130) non cylindrique circulaire ayant un diamètre axialement variable,
    caractérisé par les étapes suivantes consistant à :
    mesurer le diamètre de la première partie d'alésage (120) dans au moins un premier plan de mesure (M1-1, M1-2, M1-3) afin de déterminer une première valeur de diamètre ;
    mesurer le diamètre de la deuxième partie d'alésage (130) dans au moins un deuxième plan de mesure (M2-1, M2-2, M2-3) afin de déterminer une deuxième valeur de diamètre ;
    évaluer la deuxième valeur de diamètre en utilisant la première valeur de diamètre pour déterminer des valeurs de forme réelles qui représentent une forme réelle de l'alésage,
    la première valeur de diamètre déterminée dans la première partie d'alésage cylindrique circulaire étant utilisée pour l'évaluation des valeurs de diamètre qui sont déterminées par mesure dans la deuxième partie d'alésage non cylindrique circulaire de telle sorte que la première valeur de diamètre sert de référence interne à la pièce pour l'ensemble de la mesure ;
    comparer les valeurs de forme réelles avec des valeurs de forme théoriques afin de déterminer des valeurs d'écart de forme ;
    commander une opération de pierrage consécutive en fonction des valeurs d'écart de forme.
  2. Procédé de pierrage selon la revendication 1, dans lequel, lors de la mesure du diamètre de la première partie d'alésage dans deux ou plusieurs premiers plans de mesure (M1-1 à M1-3) axialement décalés les uns par rapport aux autres, respectivement un premier diamètre est mesuré, et pour la détermination de la première valeur de diamètre, une moyenne des premiers diamètres est formée, de préférence le premier diamètre étant mesuré dans exactement trois plans de mesure axialement décalés les uns par rapport aux autres.
  3. Procédé de pierrage selon la revendication 1 ou 2, dans lequel, lors de la mesure du diamètre de la deuxième partie d'alésage (130) dans deux ou plusieurs deuxièmes plans de mesure (M2-1, M2-2, M2-3) axialement décalés les uns par rapport aux autres, respectivement un deuxième diamètre est mesuré et un tracé de contour axial de la deuxième partie d'alésage est déterminé en utilisant les deuxièmes diamètres.
  4. Procédé de pierrage selon l'une quelconque des revendications précédentes, dans lequel, lors de la mesure du diamètre de la deuxième partie d'alésage (130), un deuxième diamètre (D6) dans une partie d'extrémité (EA), éloignée de la première partie d'alésage (120), de la deuxième partie d'alésage est mesuré, et une valeur de pré-élargissement est déterminée à partir du deuxième diamètre dans la partie d'extrémité et de la première valeur de diamètre, la valeur de pré-élargissement étant définie comme la différence entre le diamètre d'alésage à l'extrémité d'alésage éloignée de l'entrée et le diamètre d'alésage dans la partie d'alésage cylindrique.
  5. Procédé de pierrage selon l'une quelconque des revendications précédentes, dans lequel des premières valeurs de diamètre et des deuxièmes valeurs de diamètre d'un alésage sont stockées dans une mémoire d'un dispositif de commande sous la forme d'un jeu de données représentant la forme réelle de l'alésage.
  6. Procédé de pierrage selon l'une quelconque des revendications précédentes, dans lequel des valeurs de diamètre associées dans un plan de mesure sont mesurées dans deux directions de mesure s'étendant perpendiculairement l'une par rapport à l'autre.
  7. Procédé de pierrage selon l'une quelconque des revendications précédentes, dans lequel, lors des mesures dans plusieurs plans de mesure de la première partie d'alésage (120) et de la deuxième partie d'alésage (130), un intervalle de mesure axial (MI-2) entre des deuxièmes plans de mesure voisins est inférieur à un intervalle de mesure axial (MI-1) entre des premiers plans de mesure voisins, en particulier égal à moins de la moitié.
  8. Procédé de pierrage selon l'une quelconque des revendications précédentes, dans lequel les mesures sont effectuées par un système de mesure pneumatique.
  9. Installation d'usinage pour l'usinage de précision d'une surface intérieure d'un alésage (110) dans une pièce (100) à l'aide d'au moins une opération de pierrage, en particulier pour le pierrage de surfaces de glissement de cylindre lors de la fabrication de blocs-cylindres ou de chemises de cylindre pour des machines à piston alternatif, comprenant au moins une broche pour déplacer un outil de pierrage (200) expansible, accouplé à la broche, à l'intérieur de l'alésage de telle sorte qu'au moins un élément de matériau de coupe installé sur l'outil de pierrage permet de réaliser un usinage de la surface intérieure,
    caractérisée en ce que l'installation d'usinage présente un dispositif de commande et un système de mesure pour mesurer le diamètre de l'alésage et est configurée pour exécuter un procédé de pierrage selon l'une quelconque des revendications 1 à 8 sur la pièce.
  10. Installation d'usinage selon la revendication 9, caractérisée par une station de contrôle de mesure, séparée de l'unité de pierrage, vers laquelle la pièce peut être transférée pour la mesure à l'issue de l'usinage.
EP16704610.1A 2015-02-20 2016-02-15 Procédé de pierrage de forme et installation d'usinage Active EP3259099B1 (fr)

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DE102015203052.0A DE102015203052B4 (de) 2015-02-20 2015-02-20 Honverfahren zum Formhonen
PCT/EP2016/053087 WO2016131736A1 (fr) 2015-02-20 2016-02-15 Procédé de pierrage de forme

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DE102017210187A1 (de) * 2017-06-19 2018-12-20 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Honverfahren und Bearbeitungsmaschine zum Konturhonen
TWI675726B (zh) * 2018-09-28 2019-11-01 宏崴實業有限公司 窄口內再組裝工具結構
CN111594336A (zh) * 2020-05-27 2020-08-28 河南中原吉凯恩气缸套有限公司 一种异形内孔珩磨气缸套及其制备方法
CN115042083B (zh) * 2022-06-06 2023-06-20 华南理工大学 一种锥形缸孔的智能珩磨控制实现方法

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DE102013203340A1 (de) * 2013-02-28 2014-08-28 Nagel Maschinen- Und Werkzeugfabrik Gmbh Verfahren und Vorrichtung zur fluidischen Geometriemessung

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DE3703429A1 (de) * 1987-02-05 1988-08-18 Diskus Werke Frankfurt Main Ag Messautomatikrechner zur maschinensteuerung und statistischer prozessregelung fuer schleifmaschinen, insbesondere zum schleifen von werkstuecken in kontinuierlicher bearbeitungsfolge
JP4193086B2 (ja) * 1999-04-08 2008-12-10 日産自動車株式会社 シリンダボアの加工方法および加工装置
EP2279829B1 (fr) 2005-11-25 2012-06-06 Nagel Maschinen- und Werkzeugfabrik GmbH Procédé destiné à empierrer des trous de forage tout comme outil à empierrer
EP1815944B1 (fr) * 2006-02-02 2010-07-14 NAGEL Maschinen- und Werkzeugfabrik GmbH Méthode et appareil pour rectifier des trous d'alésage.
DE102006062665A1 (de) 2006-12-29 2008-07-03 Gehring Gmbh & Co. Kg Verfahren zur formändernden Bearbeitung einer Bohrung
DE102013204714A1 (de) 2013-03-18 2014-10-02 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Honverfahren und Honwerkzeug

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US20110223833A1 (en) * 2010-03-09 2011-09-15 Nagel Maschinen-Und Werkzeugfabrik Gmbh Method and apparatus for the measurement-aided fine machining of workpiece surfaces, and measuring system
DE102013203340A1 (de) * 2013-02-28 2014-08-28 Nagel Maschinen- Und Werkzeugfabrik Gmbh Verfahren und Vorrichtung zur fluidischen Geometriemessung

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DE102015203052A1 (de) 2016-08-25
EP3259099A1 (fr) 2017-12-27
WO2016131736A1 (fr) 2016-08-25
DE102015203052B4 (de) 2024-04-04

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