US2988859A - Expansible honing tool head - Google Patents

Expansible honing tool head Download PDF

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Publication number
US2988859A
US2988859A US801596A US80159659A US2988859A US 2988859 A US2988859 A US 2988859A US 801596 A US801596 A US 801596A US 80159659 A US80159659 A US 80159659A US 2988859 A US2988859 A US 2988859A
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United States
Prior art keywords
valve
piston
fluid
head
slots
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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.)
Expired - Lifetime
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US801596A
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English (en)
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Chaffey Stephen James
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Individual
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Individual
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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
    • B24B33/08—Honing tools
    • B24B33/085—Honing tools in which the honing element consists of a deformable body
    • 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
    • B24B33/08—Honing tools

Definitions

  • This invention relates to honing and polishing apparatus for. operating on the bores of tubes and the like.
  • fast stock removal from the tube is required .for example 0.006 or more'inches in diameter per foot length of the tube perminute and in order to attempt to accomplish this removal it has been found necessary to use high fluid pressures of for example 120 lbs.
  • the body 10 of the honing apparatus is somewhat cylmdrically formed and is elongated in the direction of its longitudinal central axis. At one end the body is provided with a screw-threaded bore 11 into which is screwed the screw-threaded end portion 12 of an adaptor or attachment 13 until a collar 14 abuts the end face 15 of the body so that the adaptor can be locked to the body.
  • the adaptor 13 is also formed with another screw-threaded end portion 16 which is adapted to be screwed into the i one end of a hollow tubular spindle 17 adapted at its. other end to be secured .to a driving means such as a tapered shank.
  • the adaptor or attachment 13 and the spindle 17 are herein referred to as a hollow mernber in connection with a valve 18 to be hereinafter described and the screw connection between the hollow member and the body 10 enables said body to be removed from the hollow member for maintenance purposes.
  • the valve 1 8 comprises an annular piston 19 which isv slidably housed in a cylindrical chamber 20 formed in the
  • the piston 19 comprises a backing hollow member. portion 21 made ofmetal having a head and a skirt 22 extending rearwardly from the head i.e. towards the adaptor 13.
  • the head is formed with a central screwthreaded bore into which isscrewed a screw-threaded shank of a seat member 23 and between the outer face of the head and a clamping face-formed by an outwardly directed flange of the seat member there is clamped an annular flexible sealing member 24 which is of cup shape to provide a skirt 25 making sealing engagement with the cylindrical wall of the chamber 20 and the skirt extends forwardly i.e. in a direction away from the adaptor 13 so as to face the direction of flow of pressure fluid introduced into the spindle 17 at a position adjacent the end of the spindle remote from the valve 18.
  • a central duct 26 Extending through the seat member 23 i.e. through the flange and shank thereof is a central duct 26 which is coaxial with the axis of the spindle and chamber and the forward end of the duct i.e. the end opening at the flange of the seat member constitutes an annular seat for the valve head 27 of a mushroom-type valve member the stern
  • a suitable control it is oftennecessary to remove the hollow body from the spindle and heretofore the pressure fluid in the spindle has run to waste even though the pressure fluid supply has been terminated by ,a suitable control. valve...
  • the fluid usually an oil
  • the cutting liquid used as a coolant and lubricant for the honing operation and if this, coolant liquid is not the same as the pressure ing occurs.
  • FIGURE 1 is aiperspective view of one far of honing ori polishing apparatus.
  • FIGURE 2' is alongitudinal sectional viewof the honing apparatus but on a larger scale.
  • FIGURE 3 is. a view similar to FIG. 2 but showing only a part thereof and witha valve in a different I position from the position shown in FIG. 2.
  • FIGURE 4 is a cross-sectional plan view of FIG. 2 on Q the lines 44 thereof and' 28 of which extends through the duct and at its rearward end 29 is slidably guided in an axial direction in a hole 30 extending axially through the adaptor 13 so as to maintain the valve head co-axial with the seat.
  • valve head 27 is normally urged into a closed position in engagement with the seating (as shown in FIG.
  • a further compression spring 34 which is conveniently referred to as the piston spring, is in the form of a helical spring which surrounds the stem 28 of the valve member and is of larger diameter than the valve spring 31 and is stronger than said valve spring and at its ends the piston spring is located in cylindrical recesses formed in the for- I ward end of the adaptor 13 and formed in the backing FIGURE -5 i's a fragmentary sectional view on a still largerscale showing a modification.
  • the enlarged diameter portion 33 of the valve stem is formed with a Hat rear face '35 which is adapted to abut i sure fluid can pass from the chamber 20 into a blindcavity 38 in the body said cavity 38 being open at. its forwardend i.e. that end adjacent the adaptor 13 and at its other end 39' being closed.
  • the blind cavity 38 is of elongated formation longitudinally of the body and extends. for almost the full length thereof and said body at its end adjacent the closed end,39of.the cavity isformed.
  • slots 41 Extending through the walls of the body in. directions radially thereof are four slots 41 which are equi-angularly spaced apart (as shown in FIG. 4) said slots communicating at their inner ends with the cavity 38. and at their outer ends opening onto the exterior 42 of the-body.
  • the slots 41 are of elongated formation (as shown in the vanious figures) and their major axes extend in the direction of the longitudinal axis of the body and in length said slots extend for. the major part of the length of the body.
  • the slots 41 are parallel sided and at their ends are semi-circular (as shown in FIG. 1).
  • each of the four slots 41 there is housed a piston 43 which comprises a flat rigid head plate 44 made of metal and a cup member 45 made of flexible rubber or similar material and provided with a peripheral skirt 46' which is continuous around the piston.
  • the cup member. 45 is secured to the underface of the plate 44 such as by bonding or an adhesive and said plate 44 and cup member 45 are each shaped so as to conform with the shape-of the slots 41 so that each piston 43 is of elongated formation and has round ends.
  • Each piston is housed in a slot 41 with its skirt 46 directed inwardly towards the cavity 38 and the skirt 46 narrows in crosssection towards its free edge (as shown in FIG; 4) so that'the edge of the skirt is very flexible and forms an efficient seal with the slot.
  • each slot 41 there is disposed'a rigid holder or backing plate 47 which is coextensive with the head plate 44 of the piston so as to correspond in size and shape to the slots 41 and has a goodsliding fit engagement therewith and the inner face of a holder 47 is adapted'to abut against the outer face of the head plate 44 of a piston without however being secured thereto.
  • Each holder 47 isformed on its outer face with a shallow groove 48 which extends longitudinally of the holder and terminates short of the semi-circular ends of the holder and in the groove in each holder: there is secured by a suitable adhesive an elongated cutting element 49 which is conveniently in the formof a .honing' stone.
  • the cutting element 49 is of rectangular cross-section (as shown in FIG. 4) and is narrower than the holder 47 so as to fit Within the groove 48 and thusthe sides of the element 49 are not in contact with the sides of the slots 41 and therefore have no abrasive action thereon.
  • Each holder 47 is formed on both ends thereof on its exterior surface with a transverse groove 50' and the transverse grooves 50 are positioned beyond the ends of the cutting element 49 and are aligned with circumferential grooves 51 in and adjacent the ends of the body 10.
  • a split spring ring circlip 52 which lies in the transverse groove 50 in the holders 47 and exerts inwardly radial pressure thereon so as to urgethe cutting elements 49 radially inward with respect to the body 10 and into inoperative posi* tions.
  • slot 41 is formed with shoulders 53 on which the edges ofthe skirts 46'of the pistons can bear to determine the inward movement of the pistons.
  • this construction of polishing apparatus is very similar to that disclosed in FIGS. 2 to 4 with the exception that a holder 47 is not employed for the cutting element and in this construction the'cutting element 47 abuts the outer face of the head place 44 of the piston without being secured thereto and the width of the cutting element 49is such as to enable said butting element to have a good sliding fit engagement with the sides of the slots 41.
  • said cutting element may be impregnated with a suitable lacquer.
  • the exterior 42 of the body 10 is conveniently provided with longitudinal flutes 54 disposed intermediate the slots 41 to permit of good circulation of the lubricant used during the polishing operation.
  • the pressure fluid employed may conveniently be a suitable oil or other liquid which may also in some instances be used as a lubricating and cooling liquid during the polishing operation.
  • the body 10 Inuse when it is desired to polish or hone the bore of a tube the body 10 is inserted into the bore of the tube and the tube and body are relatively rotated and reciprocated, preferably the tube is held stationary and the body is rotated and reciprocated.
  • the oil under pressure is then fed into the hollow spindle 17 where it passes to the end of the spindle adjacent the body 10 and operates on an annular valve piston formed by the parts 19, 21, and 24 and on the valve head 27 so that the annular valve piston and valve member are urged rearwardly in the chamber 20 against the action of the piston spring 34.
  • the valve head 27 remains on the valve seat so that the valve is closed until the enlarged diameter portion 32 on the valve stem abuts the end wall 36'of the adaptor thus preventing further rearward movement of" the valve member.
  • Rearward movement of the annular valve piston 19 continues, however, by reason of the fluid pressure exerted thereon so'that the valve seat moves away from thevalve head 27 to open the valve and permit the passages 37 in the adaptor into the blind cavity 38 in the ton into the chamber 20 and through the passage or passages 37 in the adaptor into the wind cavity 38 in the body 10. Rearward movement of the piston 19 can continue until the free edge of the skirt 2.2 abuts the forward end face of the adapter 13.
  • the pressure oil in the blind cavity 38 in the body '10 operates on the pistons 43 to urge them radially outwardly untilthe external surface of each of the cutting elements 49 bears on the bore of thetube to be polished and by reason of the relative movement of the cutting elements 49 to the tube the bore of the latter is honed or polished.
  • the action of the pressure oil causes the skirts 46 of the pistons to be urged relatively apart into close fluid tight sealing contact with the sides 41 of the slots and in this way the pistons are rendered fluid tight in the slots.
  • the polishing apparatus is capable of operating satisfactorily on bores withup to, 3% ovality and taper and a corresponding amount of bend withoutpressure' fluidloss occurring.
  • the cutting elements 49 When it is required to terminate a polishing operation the cutting elements 49 occupy positions in which they are partially withdrawn from the tube for the reason that the elements cannot be completely withdrawn as this would cause the end of the bore to become flared and might cause damage to the apparatus and when using apparatus according to the present invention, at this stage the rotation of the apparatus is stopped and the pressure of the fluid supplied to the spindle 17 is reduced or terminated whereupon the piston spring 34 moves the annular valve piston forwardly froma position shown in FIG. 3 to the position shown in FIG. 2 and the valve spring 31 moves the valve member into a position such that its head 27 engages the valve seat in the member 23 to close the duct 26.
  • the valve 18 adopts a closed position (as shown in FIG. 2) and therefore when the body 10 is removed from the adaptor a very small quantity of the fluid is lost corresponding to the amount of fluid in the chamber 20 and passages 37 and cavity 38 and this is a relatively small quantity when compared with the considerable quantity of fluid contained in the spindle which is sometimes of considerable length such as for example 20 feet long and the bore of the spindle may be approximately 2 inches in diameter.
  • an elongated hollow body providing a blind cavity having a common inlet and outlet for pressure fluid, a plurality of slots angularly spaced apart in the body and being of longitudinal formation and extending longitudinally of the body and each slot being radially disposed in the body and at its radially inner end communicating with the blind cavity and at its radially outer end opening onto the exterior of the hollow body, a plurality of elongated cutting elements supported in the slots and movable therein radially of the body into and out of cutting engagement with a tube, a plurality of pistons one inwardly of each of the cutting elements to move said cutting elements and each piston having a continuous peripheral skirt directed radially inwardly and engaging the walls of the slot to form an eifective seal preventing leakage of the pressure fluid operating on the radially inner end of the piston to urge said piston and thus a cutting element radially outwardly of the body, a hollow member detachably connected to the elongated
  • an elongated hollow body providing a blind cavity having a common inlet and outlet for pressure fluid, a plurality of slots angularly spaced apart in the body and being of longitudinal formation and extending longitudinally of the body and each slot being radially disposed in the body and at its radially inner end communicating with the blind cavity and at its radially outer end opening onto the exterior of the hollow body, a plurality of elongated cutting elements supported in the slots and movable therein radially of the body into and out of cutting engagement with a tube, a plurality of pistons one inwardly of each of the cutting elements to move said cutting elements and each piston having a continuous peripheral skirt directed radially inwardly and engaging the walls of the slot to form an eifective seal preventing leakage of the pressure fluid operating on the radially inner end of the piston to urge said piston and thus a cutting element radially outwardly of the body, a hollow member detachably connected to the elongated

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US801596A 1959-01-27 1959-03-24 Expansible honing tool head Expired - Lifetime US2988859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2836/59A GB873133A (en) 1959-01-27 1959-01-27 Improvements relating to polishing or like apparatus suitable for operating on the bores of tubes or on other articles

Publications (1)

Publication Number Publication Date
US2988859A true US2988859A (en) 1961-06-20

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US801596A Expired - Lifetime US2988859A (en) 1959-01-27 1959-03-24 Expansible honing tool head

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US (1) US2988859A (fr)
CH (1) CH365628A (fr)
DE (1) DE1134913B (fr)
FR (1) FR1287629A (fr)
GB (1) GB873133A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117397A (en) * 1961-10-13 1964-01-14 Tayco Dev Honing apparatus and workholder
US3339312A (en) * 1964-05-18 1967-09-05 Fafnir Bearing Co Honing apparatus
US3362113A (en) * 1965-03-11 1968-01-09 Navy Usa Pressure sensitive hone
US3817000A (en) * 1971-02-16 1974-06-18 Danfoss As Apparatus for producing the ring member of a gerotor gear set
US5233791A (en) * 1992-03-02 1993-08-10 Mcqueen Jr Joe C Apparatus for grinding the internal surface of pipe
US5529529A (en) * 1994-08-30 1996-06-25 Industrial Metal Products, Corporation Cylinder liner microfinishing apparatus and method
US20080014033A1 (en) * 2006-07-11 2008-01-17 Credo Technology Corporation Abrasive coated fluted bit with recesses
US20110053469A1 (en) * 2009-08-31 2011-03-03 Ati Properties, Inc. Abrasive Cutting Tool
US20140308882A1 (en) * 2011-11-17 2014-10-16 Picote Oy Ltd Device and system for removal of pipe renovation material from pipe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8416380D0 (en) * 1984-06-27 1984-08-01 Ae Plc Manufacture of pistons
CN116237826B (zh) * 2023-05-11 2023-07-14 四川省卓辰精密机械制造有限公司 一种阀块油孔打磨工具及打磨装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257474A (en) * 1939-03-18 1941-09-30 Norton Co Honing head
US2290739A (en) * 1939-12-22 1942-07-21 Andrew Siarto Expansion hone
US2342599A (en) * 1940-03-09 1944-02-22 Hannifin Mfg Company Cylinder honing
US2422296A (en) * 1941-08-22 1947-06-17 Curtiss Wright Corp Slat and flap control system
US2438673A (en) * 1945-02-20 1948-03-30 Thomas E Mcmahan Well tool
US2472049A (en) * 1945-12-03 1949-05-31 Bendix Aviat Corp Relief valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE103938C (fr) *
DE586416C (de) * 1931-02-09 1933-10-21 Marx & Traube G M B H Zum Schleifen von Innenzylindern dienendes, zylinderfuellendes Werkzeug
DE726603C (de) * 1938-10-02 1942-10-16 Teves Kg Alfred Als Durchflussventil dienende Dichtungsmanschette fuer Druckkolben an Druckfluessigkeitsanlagen
US2312012A (en) * 1940-08-26 1943-02-23 Chrysler Corp Expansible hone

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257474A (en) * 1939-03-18 1941-09-30 Norton Co Honing head
US2290739A (en) * 1939-12-22 1942-07-21 Andrew Siarto Expansion hone
US2342599A (en) * 1940-03-09 1944-02-22 Hannifin Mfg Company Cylinder honing
US2422296A (en) * 1941-08-22 1947-06-17 Curtiss Wright Corp Slat and flap control system
US2438673A (en) * 1945-02-20 1948-03-30 Thomas E Mcmahan Well tool
US2472049A (en) * 1945-12-03 1949-05-31 Bendix Aviat Corp Relief valve

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117397A (en) * 1961-10-13 1964-01-14 Tayco Dev Honing apparatus and workholder
US3339312A (en) * 1964-05-18 1967-09-05 Fafnir Bearing Co Honing apparatus
US3362113A (en) * 1965-03-11 1968-01-09 Navy Usa Pressure sensitive hone
US3817000A (en) * 1971-02-16 1974-06-18 Danfoss As Apparatus for producing the ring member of a gerotor gear set
US5233791A (en) * 1992-03-02 1993-08-10 Mcqueen Jr Joe C Apparatus for grinding the internal surface of pipe
US5460563A (en) * 1992-03-02 1995-10-24 Mcqueen, Jr.; Joe C. Method for preparing the internal surface of pipe
US5529529A (en) * 1994-08-30 1996-06-25 Industrial Metal Products, Corporation Cylinder liner microfinishing apparatus and method
US20080014033A1 (en) * 2006-07-11 2008-01-17 Credo Technology Corporation Abrasive coated fluted bit with recesses
US7621699B2 (en) * 2006-07-11 2009-11-24 Robert Bosch Gmbh Abrasive coated fluted bit with recesses
US20110053469A1 (en) * 2009-08-31 2011-03-03 Ati Properties, Inc. Abrasive Cutting Tool
US8308530B2 (en) * 2009-08-31 2012-11-13 Ati Properties, Inc. Abrasive cutting tool
US9138868B2 (en) 2009-08-31 2015-09-22 Ati Properties, Inc. Abrasive cutting tool and cutting method
US20140308882A1 (en) * 2011-11-17 2014-10-16 Picote Oy Ltd Device and system for removal of pipe renovation material from pipe

Also Published As

Publication number Publication date
GB873133A (en) 1961-07-19
FR1287629A (fr) 1962-03-16
CH365628A (fr) 1962-11-15
DE1134913B (de) 1962-08-16

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