EP3148745A1 - Procédé de rodage permettant l'usinage fin d'alésages - Google Patents

Procédé de rodage permettant l'usinage fin d'alésages

Info

Publication number
EP3148745A1
EP3148745A1 EP15723914.6A EP15723914A EP3148745A1 EP 3148745 A1 EP3148745 A1 EP 3148745A1 EP 15723914 A EP15723914 A EP 15723914A EP 3148745 A1 EP3148745 A1 EP 3148745A1
Authority
EP
European Patent Office
Prior art keywords
honing
bore
tool
cutting
honing tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15723914.6A
Other languages
German (de)
English (en)
Other versions
EP3148745B1 (fr
Inventor
Florian KRANICHSFELD
Joachim Weiblen
Fabio Antonio XAVIER
Oliver Bachmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elgan Diamantwerkzeuge GmbH and Co KG
Original Assignee
Elgan Diamantwerkzeuge GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elgan Diamantwerkzeuge GmbH and Co KG filed Critical Elgan Diamantwerkzeuge GmbH and Co KG
Priority to SI201530927T priority Critical patent/SI3148745T1/sl
Publication of EP3148745A1 publication Critical patent/EP3148745A1/fr
Application granted granted Critical
Publication of EP3148745B1 publication Critical patent/EP3148745B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B24B33/025—Internal surface of conical shape
    • 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
    • B24B33/10—Accessories
    • B24B33/105—Honing spindles; Devices for expanding the honing elements

Definitions

  • the invention relates to a honing method for fine machining an inner surface of a bore in a workpiece according to the preamble of claim 1.
  • the honing tool is constructed so that the cutting material bodies can be delivered radially, so that the cutting material bodies, for example, during expansion of the cutting group radially (perpendicular to the tool axis) to be delivered. Due to the radial Zu pla- speed, ie a displacement of the Honsegmente in the radial direction during the delivery, it can be achieved that the engagement conditions between cutting material body and bore inner surface, regardless of the set diameter remain practically constant. By avoiding Schneidstoff stresses tilt during radial delivery uneven wear can be avoided.
  • FIG. 1 shows a schematic view of a part of an NC-controlled, multi-axis processing machine 100 in the form of a honing machine 100 in the direction parallel to the x-direction of the machine coordinate system MKS.
  • the honing machine has several honing units arranged side by side in the x-direction and simultaneously operable.
  • Fig. 1 some components of a honing unit 1 10 are shown.
  • a control device 1 15 controls working movements of movable components of the honing machine.
  • a lifting drive structurally connected to the headstock causes the vertical movements of the work spindle parallel to the spindle axis 132 during insertion of the honing tool 200 to be machined into the bore to be machined or when removing the honing tool from this bore.
  • the lifting drive can be controlled during honing by the control device 1 15 so that the honing tool performs within the bore of the workpiece, a vertical reciprocating motion according to the desired Honparameter.
  • the honing unit 1 10 with the vertical work spindle 130 contained therein is linearly movable in a horizontal direction parallel to the x-axis of the machine coordinate system MKS, ie perpendicular to the spindle axis in a transverse direction.
  • MKS machine coordinate system
  • Horizontal transverse movements in the x direction can also be used to move the honing unit to a tool changer arranged in line with the transverse movement.
  • the headstock is mounted on a horizontally movable carriage 1 14, which is guided linearly on two horizontal guide rails on the front of the support structure 105 facing the headstock.
  • the transverse movement is effected by a positioning drive 1 18, which is arranged between the support structure and the carriage 1 14.
  • a honing tool 200 of special construction is used, which is also referred to in this application as an "annular tool" (see also Fig. 2)
  • the honing tool has a cutting group 220 attached annularly to the tool body 210 around the circumference
  • the cutting material bodies are designed as honing segments whose width in the circumferential direction is significantly greater than their length in the axial direction
  • Workpiece abrasive abrasive body are concentrated in an axially relatively narrow zone (annular cutting group) and take a relatively large proportion of the circumference of the honing tool.
  • annular cutting group 220 At the spindle end facing away from the tool body (in Fig. 2A below) is the annular cutting group 220, which has several (in the example, three) evenly distributed over the circumference of the tool body Schneidstoff Sci 220-1, 220-2, 220-3, which by means of a Cutting material body delivery system radially to the tool axis 212 can be delivered to the outside to the abrasive outer sides of the Schneidstoffköpers, ie the cutting surfaces to press with a defined pressing force or pressing force against the inner surface of a bore to be machined.
  • a flush termination with the lower end of the tool body is cheap, but not mandatory.
  • the ring should sit in the spindle distal third or in the distal quarter of the tool body, there may be a small distance to the front side of the tool body.
  • the axial length LHS of the Honsegmente is less than 15%, in particular less than 10% of the bore length L.
  • the Honsegmente are about 4 mm to 35 mm, in particular about 10 mm high (in the axial direction), which in the example between 5% and 30%, in particular between 10% and 20% of the effective outer diameter of the cutting group corresponds to maximally inwardly drawn cutting bodies.
  • the honing tool has only this one annular cutting group.
  • the axial length LHS therefore simultaneously corresponds to the axial length of the entire cutting region of the honing tool.
  • Each cutting material body is fixed to an outside of an associated support bar 224-1, 224-2 made of steel by soldering. Alternatively, the cutting material body can also be attached by gluing or by screws, whereby an easier replacement is possible.
  • each Support bar has on its inner side an inclined surface which cooperates with a conical outer surface of an axially displaceable Zustellkonus 232 in such a way that the support bars are delivered with the carried cutting material bodies radially outward when the Zustellkonus means of a machine-side feed device against the force of return springs 234 , 226, 228 is pressed in the direction of the spindle facing away from the end of the ring tool.
  • the carrying strips with the honing segments are retrieved radially inward with the aid of circulating return springs 226, 228.
  • the radial position of the cutting material body is thereby controlled without play on the axial position of the Zustellkonus 232.
  • the use of relatively wide honing segments in the annular cutting group may i.a. be favorable in the machining of bores, e.g. have for the purpose of gas exchange transverse bores, which open at the bore surface to be machined.
  • Wide, inherently rigid honing segments can bridge the mouth region so that the honing tool can not "get stuck.” If only a few (eg three) wide honing segments are provided, only a few radial perforations must be provided on the tool body, resulting in improved mechanical properties Stability results, which is favorable in a position-correcting machining, in order to withstand lateral forces.
  • This machine and tool concept enables a position-correcting material-removing machining of the inner surface of the bore 122 in order to bring the bore position within the tolerances into its desired position by means of honing.
  • FIG. 3 shows different phases or different partial operations of a position-correcting honing operation.
  • the bore 122 is not yet at its desired setpoint position, which in the example is represented by the setpoint position SB of the bore axis. Rather, the bore 122 still shows a lateral offset to the desired position, wherein the actual position of the Bore (characterized by the current bore axis IB) is outside the tolerances next to the desired position.
  • the bore inner surface does not yet show the intended intended use surface structure, which is also still to produce by honing.
  • the honing tool is positioned relative to the bore so that the tool axis 212 is coaxial with the desired position SP of the bore.
  • the workpiece carrier 127 is moved horizontally parallel to the y-direction of the machine coordinate system and / or the headstock or the work spindle parallel to the x-direction of the machine coordinate system.
  • the coaxial position set by the positioning operation is schematically illustrated in FIGS. 1 and 3A.
  • the honing tool is inserted into the bore 122 by actuation of the lifting drive of the work spindle and lowered until the honing tool reaches an insertion end position in which the annular cutting assembly 220 is located in an entry distal end portion 123 of the bore 122 ( Figure 3B).
  • the end region remote from the bore inlet 124 defines the lower end or the far end of the overall length of the bore interior to be machined. Since in the ring tool shown the cutting group 220 is flush with the spindle distal end face of the tool body, the ring tool can be practically driven up to the stop on the bottom of the hole or, in through holes, to the stop on the top of the workpiece holder. In practice, however, a small distance of a few millimeters, for example 1 to 2 mm, is generally complied with. During the insertion operation, the work spindle can be rotated slowly, but this is not absolutely necessary.
  • an expanding operation may begin.
  • the honing tool is rotated about its tool axis, and at the same time, by driving the cutting-material-infeed system, the cutting group is slowly expanded, so that the effective outer diameter of the cutting group gradually increases.
  • the hole in the remote end portion not already to the desired position of the bore axis is centered and has a circular cross-section, in a certain phase of the pand michsoperation first a one-sided material engagement, ie an abrasive machining in the partial section in that region of the bore inner surface take place, which is radially closest to the desired position of the bore axis.
  • the partial section is gradually in a full cut, in which over the entire circumference of the cutting group material is removed.
  • the radial delivery of the cutting material body to the outside is continued until the cutting material body reach a predefined first radial position (FIG. 3C). Thereafter, the further delivery is stopped by the control device. Due to the removal of material over the circumference of the cutting group in conjunction with the radial feed, a cylindrical extension 121 is produced in the expansion operation by material-removing engagement of cutting bodies on the inside of the bore in the end region 123 of the bore, which is usually within the tolerances is exactly centered to the desired position of the bore axis. If the hole is not precisely positioned, the cylindrical extension will still be decentered from the current hole axis.
  • the excess of the enlargement with respect to the hole section adjoining the bore is generally at least 100 ⁇ m in relation to the diameter. Usually the values are higher, e.g. at 200 ⁇ or more or at 400 ⁇ or more.
  • the honing tool remains at the set axial position during the expansion operation, so that no lifting movement is superimposed.
  • the lifting drive of the work spindle is actuated at least in phases during the expansion operation in order to superimpose an axially short-stroke oscillatory movement on the rotational movement of the honing tool during radial expansion.
  • the axial length of the cylindrical extension produced would then be somewhat larger than with only radial expansion without superimposed lifting movement.
  • the honing tool is relieved in a relieving operation which returns the cutting material bodies to a second radial position by a specific return amount of, for example, 10 to 15 ⁇ m become.
  • a specific return amount of, for example, 10 to 15 ⁇ m
  • a pulling operation (FIG. 3D) is initiated in which the rotationally driven honing tool is slowly pulled out of the bore in the direction of the bore entry at a suitable lifting speed.
  • the full-length bore is centered with respect to the desired position of the bore axis.
  • the angularity of the bore is properly adjusted so that the bore axis is e.g. oriented perpendicular to the top surface.
  • the lifting speeds are typically in the range between 0.3 m / s and 0.7 m / s, but they may also be smaller, for example, down to 0.1 m / s, or but larger, to over 1 m / s, for example up to about 2 m / s.
  • At least one further honing operation is then carried out by means of a conventional expandable honing tool 300, which is simply or multiply hinged to the work spindle and has relatively long honing stones 320 whose length may be more than 30% of the length of the bore (FIG. 3F).
  • a conventional expandable honing tool 300 which is simply or multiply hinged to the work spindle and has relatively long honing stones 320 whose length may be more than 30% of the length of the bore (FIG. 3F).
  • the process can be performed with vertical axial direction as shown. Even a horizontal machining is possible.
  • the hole can, as shown, be uncoated, so that directly the base material of the workpiece is removed. A machining of coated holes is also possible, in which case the material of the coating would be removed.
  • An annular tool may optionally have a separately deliverable further ring with cutting material bodies in addition to the spindle-distal ring.
  • a fine boring tool for a similar material-removing, position-correcting finishing method instead of a ring tool configured for honing, which has at least one controllable cutting element with a geometrically determined cutting edge (instead of an annular cutting group with geometrically indefinite cutting edges) ) having.
  • at least one pair of diametrically opposed controllable cutting elements may be present. The method steps: inserting the fine boring tool, expanding or retracting the cutting element while rotating to produce a cylindrical extension, pulling out with extended cutting element with simultaneous rotation could be carried out analogously to the procedure described.

Abstract

L'invention concerne un procédé de rodage permettant l'usinage de la surface intérieure d'un alésage (122) dans une pièce (120) au moyen d'au moins une opération de rodage, pendant laquelle un outil de rodage pouvant s'élargir est utilisé, lequel, dans une zone d'extrémité d'un corps d'outil éloignée d'une broche, comprend un groupe de coupe (220) annulaire pouvant s'élargir présentant plusieurs corps en matériau de coupe répartis sur toute la périphérie du corps de l'outil, corps dont la longueur axiale est inférieure au diamètre extérieur effectif du groupe de coupe lorsque les corps en matériau de coupe sont entièrement retirés. Le procédé est caractérisé par les étapes suivantes : l'accouplement rigide de l'outil de rodage à une broche de travail d'une machine d'usinage ; le positionnement relatif de l'outil de rodage et de l'alésage l'un par rapport à l'autre de sorte qu'un axe (212) de l'outil de rodage est coaxial à une position théorique (SB) de l'axe de l'alésage ; l'introduction de l'outil de rodage dans l'alésage, les corps en matériau de coupe étant retirés, jusque dans une position finale d'introduction dans laquelle le groupe de coupe se situe dans une zone d'extrémité (123), éloignée de l'entrée, de la longueur de l'alésage à usiner ; l'amenée en rotation de l'outil de rodage et l'expansion simultanée du groupe de coupe sur ou dans la zone de la position finale d'introduction jusque dans une première position radiale des corps en matériau de coupe, de telle sorte qu'un enlèvement de matière effectué par les corps en matériau de coupe sur la face intérieure de l'alésage dans la zone d'extrémité de l'alésage entraîne un élargissement (121) cylindrique centré sensiblement par rapport à la position théorique de l'axe de l'alésage ; le retrait de l'outil de rodage de l'alésage pendant la mise en rotation simultanée de l'outil de rodage, de telle manière que l'alésage est élargi progressivement à partir de l'élargissement cylindrique en direction du côté d'entrée.
EP15723914.6A 2014-05-26 2015-05-19 Procédé de rodage pour l'usinage de trous Active EP3148745B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201530927T SI3148745T1 (sl) 2014-05-26 2015-05-19 Postopek honanja za fino obdelavo izvrtin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014210012.7A DE102014210012A1 (de) 2014-05-26 2014-05-26 Honverfahren zur Feinbearbeitung von Bohrungen
PCT/EP2015/060928 WO2015180994A1 (fr) 2014-05-26 2015-05-19 Procédé de rodage permettant l'usinage fin d'alésages

Publications (2)

Publication Number Publication Date
EP3148745A1 true EP3148745A1 (fr) 2017-04-05
EP3148745B1 EP3148745B1 (fr) 2019-07-03

Family

ID=53199980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723914.6A Active EP3148745B1 (fr) 2014-05-26 2015-05-19 Procédé de rodage pour l'usinage de trous

Country Status (8)

Country Link
US (1) US10160087B2 (fr)
EP (1) EP3148745B1 (fr)
JP (1) JP6345275B2 (fr)
DE (1) DE102014210012A1 (fr)
ES (1) ES2747366T3 (fr)
HU (1) HUE045034T2 (fr)
SI (1) SI3148745T1 (fr)
WO (1) WO2015180994A1 (fr)

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KR102060873B1 (ko) 2015-05-26 2019-12-30 게링 테크놀로지스 게엠베하 호닝 공구를 사용하여 회전 대칭적 비-원통형 보어를 제조하기 위한 방법
CN112025537B (zh) * 2020-07-22 2022-07-05 苏州信能精密机械有限公司 一种零部件珩磨系统
CN115338773B (zh) * 2022-07-29 2023-09-29 中国第一汽车股份有限公司 一种缸孔珩磨找正装置及找正方法
CN116276616B (zh) * 2023-01-31 2024-02-02 中建材光子科技有限公司 一种玻璃管定心工装及玻璃管加工方法

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Also Published As

Publication number Publication date
HUE045034T2 (hu) 2019-12-30
EP3148745B1 (fr) 2019-07-03
US20170190015A1 (en) 2017-07-06
DE102014210012A1 (de) 2015-11-26
US10160087B2 (en) 2018-12-25
JP2017516669A (ja) 2017-06-22
SI3148745T1 (sl) 2019-11-29
JP6345275B2 (ja) 2018-06-20
ES2747366T3 (es) 2020-03-10
WO2015180994A1 (fr) 2015-12-03

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