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61. 发明专利

GB350921A Improvements in or relating to machines for grinding rolls and the like 未知
公开(公告)号：GB350921A
公开(公告)日：1931-06-15
申请号：GB119630
申请日：1930-01-13
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B7/16
摘要： 350,921. Grinding. CINCINNATI GRINDERS, Inc., 3058, South Street, Cincinnati, Ohio, U.S.A.-(Assignees of Booth, C. and Binns, G. W. ; 3555, Edwards Road, Cincinnati, Ohio, U.S.A.) Jan. 13, 1930, No. 1196. Convention date, Jan. 22, 1929. [Class 60.] Rollers and the like, treating; spindle mountings.-A machine for grinding the ends of rolls &c. consists of a bed 25 having ways 26 upon which are adjustably mounted a slide 27 carrying upon a vertical spindle a work rotating disc 46, and a slide 28 carrying upon a vertical spindle a disc 42, the spindles being driven, through worm gearing, from a main shaft. The peripheries of the discs are shaped to engage the rolls 44, shown as of frusto-conical form, and to prevent axial movement thereof in one direction, and the periphery of the disc 42 is notched at 45 to allow of ejection, to a shoot 75, of finished work pieces by a spring-pressed plunger 72 on the disc 46. In the disc 46 is a radial groove or slot 48 for a plunger 49 movable by a spring-pressed lever 53 pivoted in an aperture 55 in the disc and carrying a roller 57 engaging a cam 58 pivoted at 59, below the disc, to a plate on the slide 27. The cam is pulled by an adjustable spring 62 to an extent limited by a stop screw 66 so that, as the disc 46 rotates to bring the slot 48 towards the grinding position and a work piece is placed in the outer end of the slot, the cam will move the lever 53 to press the work against a guide-plate 68. Continued movement rocks the cam and tensions the spring 62 until the bevelled end 69 of the plate is reached, when the pressure of the cam against the lever snaps the plunger 49 outwards to press the work into the space between the discs, where it is rotated; movement of the work is restrained by a work-rest 70. The work is ground by a grinding-wheel 85 mounted on a spindle 78 in a slide 77 adjustable, by a screw 80 and worm gearing, on a column 76, and the wheel is reciprocated axially by a sleeve 86 slidable but not rotatable in the slide 77 and engaging the spindle 78 by an antifriction bearing 87. The sleeve is pivoted at 98 to a lever 89 having an adjustable pivot 91 carried by a lever 92 and engaging a slot 90 in the lever, whereby the extent of reciprocation of the wheel 85 may be adjusted, and the lever is oscillated by a lever 95 moved by rack and pinion gearing 103 by a slide bar 101 actuated by a cam 99 and a spring 102 ; the oscillation may be stopped by locking the bar in its innermost position by a screw 123. The periphery of the wheel 85 may be shaped as shown in Fig. 12 or otherwise, to grind bevelled, half round, or other ends on the rolls. The work engaging peripheries of the discs 42, 46 are trued by a turning-tool 116, Fig. 11, adjustable by a screw 114 in a sleeve 111 adjustably pivoted to a slide 109 adjustable on a bracket 106, which may be secured to either of the slides 27, 28. The discs 46, 42 may be of different sizes and may have different surface speeds ; the member 68 may be omitted.

62. 发明专利

DE511860C 未知
公开(公告)号：DE511860C
公开(公告)日：1930-11-01
申请号：DEC0042905
申请日：1929-04-10
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/24

63. 发明专利

GB315406A Improvements in or relating to grinding machines 未知
公开(公告)号：GB315406A
公开(公告)日：1930-08-21
申请号：GB2016229
申请日：1929-07-01
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B15/04
摘要： 315,406. Cincinnati Grinders, Inc., (Assignees of Booth, C.). July 13, 1928, [Convention date]. Centreless grinding ; guides and rests ; wheels.-A centreless grinding machine for grinding seatings on poppet valves &c. consists of a bed 20 on which is mounted, on slides 22, 24, a head 25 carrying a regulating- wheel 27, adjustable by a screw 29 and also movable to and from the work by a sleeve 31 operable by a handle 33. The work, consisting of a stem 34 previously ground in a centreless grinding machine, and a head 35 is supported with the stem on a rest 37 carried bv a bracket 38 on the slide 22 and is retained in position by rollers 39 carried by arms 42 pivotally carried by the bracket. 38 and normally pressed up to the work by springs 43. The valve is positioned during grinding with the stem pressed up to a stop consisting of an ejector rod 45, by means of a roller 52 carried by an arm 53, which is pivoted at 58 in a block 54 pivotally mounted on the bracket 38 by a screw 55, and normally pressed up to the valve head by springs. The seating is ground by a cup grinding-wheel 65 mounted on a spindle 63 by clamps 64, the spindly being carried by a slide 62 on diagonal ways on the bed, and reciprocated thereon to equalize wear of the wheel. When the seating is ground the regulating-wheel is retracted, the rollers are removed from the work, and the work is ejected, by operation of the lever 33, which moves a bar 69 carrying at cam actuating a bar 76 to move the levers 42, 53 outwardly, a cam 77 also engaging a stud 78 on the arm 53 to move this about the pivot 55. After movement of the rollers, the ejector rod 45 is moved through ratchet mechanism 83 - - 85, a shaft 51, rockarm 50, and a lever 47. In a modification, Fig. 11, the valve. stem is carried by a bearing 88 on an arm 87 movable by a cam on a rod 95, which also carries means for moving the head-engaging roller 103 and the ejector 101. The work-rest 37 may be provided or its working face with a concave portion to receive the valve stem.

64. 发明专利

GB309412A Improvements in or relating to processes of and machines for grinding work pieces with a plurality of unequal diameters 未知
公开(公告)号：GB309412A
公开(公告)日：1930-05-22
申请号：GB1100429
申请日：1929-04-09
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/18
摘要： 309,412. Cincinnati Grinders. Inc., (Assignees of Booth, C.). April 9, 1928, [Convention date]. Centreless grinding ; guide and rests ; wheels. In grinding work-pieces having portions of different diameters, such as drills, in a centreless grinding machine, each work-piece is supported outside the grinding throat while one portion is being ground, and this ground portion is then supported outside the throat of a second machine while the previously supported portion is being ground concentrically with the first formed portion, the same portion of the work being used for determining the axis of rotation in each grinding operation. The machine comprises a grinding wheel 12 and a regulating wheel 17 mounted on a transversely movable slide 14 which carries a base 18 carrying the work-supporting blade 19, Figs. 2 and 3, in the grinding throat and the work-rest 23 outside the throat. The blade has an inclined upper face so as to maintain the work 24 in contact with the regulating wheel by gravity and the rest has a surface 26 inclined at the same angle as the blade and a surface 27 approximately parallel to the portion of the regulating wheel which encounters the work. The rest 23 is vertically adjustable by slots 29 and screws 28 on two lugs 21, 22, projecting vertically from a member 20 which is transversely adjustable on the base 18 by a screw 31 and is locked by a screw 30. In operation, the rest 23 is adjusted to compensate for the difference in diameter of the two portions of the work and the grinding is effected in the barrel portion 25, the wheels being conical so as to produce longitudinal clearance on the drill. The inclination of the surfaces of the rest 23 is such that lateral oscillation of the work is prevented and the work will rise parallel to itself should it be raised in the grinding throat due to irregularities on its surface encountering the regulating wheel. The work is then removed to a similar machine in which the previously ground portion 25, Fig. 7, is supported in a sleeve 33 and the shank 24 is acted upon by a grinding wheel 12 whilst being rotated by a regulating wheel 17. The regulating wheel has a projecting rib 34 and the work support in the throat has a similar projection so as to engage that part of the work which was previously engaged by the rest 23. The machine employed for the second grinding operation is described in Specification 309,413.

65. 发明专利

GB309413A Improvements in or relating to centerless grinders 未知
公开(公告)号：GB309413A
公开(公告)日：1930-04-03
申请号：GB1100529
申请日：1929-04-09
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/24
摘要： 309,413. Cincinnati Grinders, Inc., (Assignees of Booth, C.). April 9, 1928, [Convention date]. Centreless grinding ; guides and rests ; wheels. -A centreless grinding machine has a work supporting fixture adjacent the grinding throat which may be swung from a work-receiving position into a position where a projecting part of the work extends into the throat. The support 180 for the regulating wheel 15 has an extension 27 carrying a bracket 28 to which is secured a second bracket 30 vertically adjustable by means of a screw 53 and locked by bolts 51 passing through slots 52. Side flanges 31 on the bracket 30 carry horizontal gimbals 32 supporting a ring 33 provided with vertical gimbals 34 on which is mounted a work-supporting sleeve 35. A plunger 42 sliding within the bracket 30 has a pin 44 projecting laterally therefrom and engaging a vertical slot in a block 47 which is slidable within a horizontal slot 48 in the bracket 28 by means of a hand lever 49 carrying a pin 50 engaging a vertical slot in the block, The work-supporting blade 19 which extends into the grinding throat is provided with a projecting rib 21 and the regulating wheel 15 has a corresponding rib 25 so that the work 22, which may be a twist drill, will be supported in the throat on a predetermined zone only. In operation, the sleeve 35 is rotated about the gimbals 32 into a substantially vertical position and the twist drill 22 is inserted until it abuts a flange 39 in the bore of the sleeve. The sleeve is then rotated into a horizontal position with the tapered shank of the drill resting on the work-support 19. On operating the hand lever 49 a pin 41 on the plunger 42 enters the bore of the supporting sleeve 35 and forces the work into the grinding throat until it encounters a stop 26 on the support 19. A guide 36 has a vertical face engaging the sleeve 35 and is so positioned that when the grinding operation is complete, the side of the barrel portion 23 of the drill, which is slightly tapered to provide working clearance, adjacent the regulating wheel will make line contact with the bore of the sleeve at that side. The grinding wheel 12 and regulating wheel 15 may each have half of the taper of the drill shank 22, or one of these may have its axis parallel to that of the work and all the taper be provided on the other. The provision of the universally mounted supporting sleeve 35 and the ribs on the support 19 and regulating wheel 15 ensure the concentricity of the previously ground barrel 23 and shank 22 of the drill. A trueing device may be provided on the machine for producing the rib 25 on the regulating wheel.

66. 发明专利

GB308875A Improvements relating to grinding or abrading machines 未知
公开(公告)号：GB308875A
公开(公告)日：1929-04-04
申请号：GB598828
申请日：1928-02-25
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/22
摘要： 308,875. Hughes, V. A. B., (Cincinnati Grinders, Inc.). Feb. 25, 1928. Centreless grinding; guides and rests. - In a machine for grinding cylindrical work-pieces, the work is automatically moved axially across the face of a grinding-wheel until its full length is in contact with the wheel, is allowed to remain axially stationary but rotating until the rough grinding is completed and is finally moved axially again while a finishing cut is being taken by the wheel. The machine comprises a two part base 1, 2 on which is mounted a slide 11 carrying the rapidly revolving grinding-wheel 12, driven by a belt 25, and a compound slide 14 carrying an abrasive regulating-wheel 15 driven slowly in the same direction as the grinding wheel by gearing which allows adjustment of the wheel 15. The regulating-wheel is mounted in bearings on a bracket 56 vertically adjustable by a screw and hand-wheel 55 on a slide 50 which is adjustable to and from the grinding-wheel by a screw and hand-wheel 43. The slide 50 is carried by the slide 14 and the latter is adjustable by a screw and hand-wheel 63 on a turntable 58 which is rotatably adjustable about a vertical axis by means of arcuate slots and bolts 60. The shaft 57, Fig. 2, on which the regulating-wheel 15 is mounted carries a spiral gear 72 engaging a similar gear on a shaft 74 provided with a second spiral gear engaging a similar gear 77 on a telescopic shaft 80, the casings 70, 73 being rotatable about the shafts 57, 74 respectively to allow the drive to be continued when the wheel 15 is adjusted. Similar gears 82 and casings 81 drive the shaft 80, through spiral gears 90, 93 and shaft 92 from the main drive shaft 26, Fig. 3. A telescopic rod 95, pivotally attached ta lugs 96, 97 on the upper and lower gear casings serves to rotate the latter as the regulating-wheel is adjusted and so relieve the driving shaft 80 from bending strains. The work W is supported during grinding by a rest 17, Figs. 1, 2, and 7 having a cylindrical surface 100 of exactly the same radius as the finished work-piece, terminating in tangential surfaces 100 , the construction being such that the lines a, b, passing through the centres of the regulating and grinding wheels 15, 12, respectively and the centre of the work W intersect the rest on the tangential surfaces. For all sizes of work the regulating-wheel is arranged as far above the work as possible so as to produce a resultant thrust R passing subtantially through the centre of the rest which may be cut away at 101. The rest is mounted by a clamp 20, on a slide 16, adjustable longitudinally on the slide 14 by means of a screw and hand-wheel (not shown). The grinding-wheel slide 11 is adjustable by means of a screwed shaft 34, Fig. 1, rotated through gearing 33 from a handle 30 and engaging a half-nut 35 on the slide. For operating on a succession of similar cylindrical blanks the grinding and regulating-wheels are arranged with their axes parallel and the blanks are supplied to a vertical shoot 136, Fig. 2, from which the lowest blank is removed by a plunger 110 reciprocated by a rotating cam 118 engaging a roller 114 thereon and a spring 116. The shoot, plunger and cam are carried by a bracket 112 adjustable transversely of the machine by a hand-wheel and screw 123 and the cam is rotated from the shaft 87 by spiral gearing 128 and a universally-jointed telescopic shaft 132. The work rest 17 extends on each side of the grind. ing throat and receives the lowermost blank from the shoot. The blank is then pushed into the throat and is allowed to remain axially stationary whilst the springiness of the wheel supports is taken up and the blank is ground down to size, after which the succeeding blank removes it from the throat and in so doing applies the finishing cut. The width of the grinding and regulating- wheels is preferably greater than the length of a blank so that their leading edges may be worn round and still leave a flat periphery on each wheel to give the correct size to the blanks. On leaving the work rest 17, the finished blanks enter an inclined shoot 142.

67. 发明专利

GB308874A Improvements in or relating to grinding or abrading machines 未知
公开(公告)号：GB308874A
公开(公告)日：1929-04-04
申请号：GB598428
申请日：1928-02-25
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/18
摘要： 308,874. Hughes, V. A. B., (Cincinnati Grinders, Inc.). Feb. 25, 1928, Centreless grinding; gauges; guides and rests. - In a. centreless grinding machine, the work is controlled so that it is ground in relation to a predetermined final axis as distinguished from finding and establishing its own axis. The machine comprises grinding and regulating wheels with a work-receiving throat between them, two centring spindles in alignment with the throat and engaging the work therein, and a vertically movable work rest projecting between the wheels and supporting the work held by the spindles, at least one of the spindles being movable in a direction towards the grinding wheel within the limits imposed by a receding stop mechanism. The grinding-wheel B rotates on a stationary axis and the regulating- wheel C rotates in the same direction on a carriage D, Fig. 13, for movement to and from the grinding-wheel. A central bracket 16, Fig. 2, supports the work rest 10 having an inclined top surface and also supports a floating spindle 11 mounted by means of a ball joint 12 in a block 14 which is adjustable axially by means of a screw 19. Rotation of the block is prevented by a screw 17 engaging a slot therein and rotation of the spindle by a pin 20 whose ends lie in slots 20 in the block 14. The universal movement of the spindle is limited by a bracket 21 containing a spring plunger 23 which prevents the work from being lifted by the regulating-wheel when out of contact with the grinding-wheel. A second spindle 25, movable in and out of a tailstock 24, is also supported on the bracket 16. In grinding a two-diameter work piece 27, 28, whereof the portion 27 has been ground concentric with the centres in a previous centred or centreless method, a support 29 is provided for the portion 27, the work resting on this support and the rest 10 until it is engaged by the tailstock spindle 25. The latter assists in supporting the work without removing it from the rest 10. One side of the floating spindle 11 is flattened as at 30, Fig. 4, and is adapted to contact during the grinding operation with a screw stop 31 having a graduated collar 32 coacting with a pointer 33. In operation, if a work piece M, Fig. 5, is concentric with an axis N and is required to be ground concentric with an axis 0, the centres are set in alignment with the latter axis and the regulating-wheel is advanced so that the work is reduced in size by the grinding-wheel according to a uniform spiral R. On approaching the final size the spindle 11 engages the stop 31 and limits the advance of the work towards the grinding-wheel and in consequence the removal of material is according to an irregular spiral S and the centre of rotation of the work changes progressively from N to O. The flat face 30 is preferably arranged parallel to the common tangent of the finished work-piece and the regulating- wheel, thus producing the effect of a receding stop from the first movement of contact with the stop 31 and allowing the removal of a slight amount of material from the side having the shorter radius in order to prevent the formation of facets. The same result may be achieved by arranging the face 30 in a vertical plane and providing a stop 31 on a lever connected by linkage to the regulating wheel slide so that the stop may recede as the slide advances. In an alternative construction the grinding-wheel is mounted on a slide movable towards the regulating-wheel, the slide being connected to the stop through linkage. In a further modification, both spindles are capable of universal movement in ball-joints, one being arranged on a slide to allow axial movement for insertion of the work. In operating on the middle portion of a three diameter workpiece, the stop may contact with one of the previously formed cylindrical surfaces and for operating on work which is longer that the width of the wheels, the spindles are mounted on a slide capable of back and forth axial movement in the throat. In the form of machine shown in Fig. 2, the work rest 10 is vertically adjustable to suit different sizes of work by means of a wedge 45 and a screw 46 and in a modified form of machine the work rest 48, Fig. 13, is carried by a bracket 47 adjustable by means of a screw 50 along a, guide which is parallel to the line 49, this line being a radius in the work to the point of contact with the rest and making an angle of about 50‹ with the horizontal. In this machine the grinding-wheel B and regulating-wheel C are each mounted on adjustable slides S, D respectively. The floating motion of the spindle 11 may be wholly or partially restrained by providing a pointed screw at the end of a bracket enclosing a rearward elongation of the spindle and adapted, on adjustment, to engage more or less with a conical recess in its end.

68. 发明专利

GB305839A Improvements relating to grinding or abrading machines 未知
公开(公告)号：GB305839A
公开(公告)日：1929-02-14
申请号：GB598728
申请日：1928-02-25
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/18
摘要： 305,839. Hughes, V. A. B., (Cincinnati Grinders, Inc.). Feb. 25, 1928. Centreless grinding; guides and rests. - In a machine for cleaning up or finishing thin hollow or solid bodies of substantially cylindrical shape but which are slightly conical or non-circular, the work is freely supported in contact with a grinding wheel so as to be capable of angular and lateral movement. The machine comprises a grinding wheel 12 rotated at high speed by a belt 13 and a regulating wheel 15 rotated at a low speed by a belt 74, gearing 80, 81, and a flexible shaft 72, 16. The bearings for the regulating wheel are carried on a frame 18 pivotally supported by a shaft 19 on a base 21 which may oscillate freely about a trunnion 31 on a slide 30 movable to and from the grinding wheel by a hand wheel 37. The base 21 is provided with rollers 32 to assist the freedom of oscillation about the trunnion 31 and the frame is supported at the rear by plungers 45 urged by springs 51 against studs 47 on the base, the pressure of the springs being adjustable by nuts 49, 50. The regulating wheel 15 is moved to and from its operative position by a pedal 60 and a link 25 attached to the frame 18. In operation, when the regulating wheel has been withdrawn by the pedal, the work W is placed upon a roller 40 rotatable on a bracket 43 attached to the slide 30 and is kept in position by a fixed blade 65 on the base. The regulating wheel is then allowed to come in contact with the work and pressed it, by means oE the springs 51 and a weight 22, against the grinding wheel in such a manner that the latter is able to grind it uniformly all over without removing an undue amount of material at any point. The work may subsequently be preserved by lacquering &c. Grinding fluid is supplied to the work by a pump 78.

69. 发明专利

GB304060A Improvements in grinding or abrading machines 未知
公开(公告)号：GB304060A
公开(公告)日：1929-01-17
申请号：GB571828
申请日：1928-02-23
申请人： CINCINNATI GRINDERS INC
IPC分类号： B24B5/35
摘要： 304,060. Hushes, V. A. B., (Cincinnati Grinders, Inc.). Feb. 23, 1928. Balls, shaping and surfacing.-In a grinding machine, the work pieces are presented to opposed grinding and regulating wheels by means of a rotating carrier which steadies the workpieces but allows freedom for their automatic adjustment on the work rest and the periphery of the grinding- wheel. The grinding-wheel 10 has a periperal arcuate groove 11 and the regulating wheel D is mounted on a slide C adjusted by a screw E which is connected by lever mechanism G to a rotary cam 12 to impart reciprocating movement to the regulating wheel in order to feed the blanks to the grinding-wheel. A slide I mounted beneath the slide C carries a bracket 13 provided with a work-rest 14 which projects between the grinding and regulating wheels and supports the spherical heads of the work-pieces 15 during the operation. The grinding-wheel rotates downwardly toward the work-support while the regulating wheel is moved slowly upwardly to rotate the work by frictional contact. The work carrier comprises a disc 23 rotating on a spindle 21 and provided with peripheral openings 24 to receive the shanks of the work-pieces. A plate 25 has a flange 26 which limits the movement of the workpieces into the sockets. Intermittent movement is imparted to the carrier to bring the work-pieces successively into position by means of a ratchet wheel 27 engaged by a pawl 28 which is rocked through lever mechanism, Fig. 4, from a rock shaft 33. The indexing movement is effected at the required time by means of a lug on the cam disc 12, which coacts with a rack rod and pinion to actuate the shaft 33. The cam disc is driven through a belt 43 and worm gearing 42 from a motor 44. The finished work-pieces are ejected by means of a member 46 actuated by an arm 50 on a rock shaft 51. This shaft is operated from a lug 58 on the cam disc 12 through a lever arm 54 and a trigger device. The ejecting movement may force the finished work-piece into a discharge tube 60, whence it may slide out of the machine. In a modification, Fig. 7, the work carrier is fitted with positioning bushes 61 having a portion 62 which fits the shank of the work-piece and a recess 63 to receive the ball end. In this case the ejector forces the ball end into the recess 63, after which the carrier is indexed. When the work-pieces reach the bottom of the carrier they fall out by gravity into a suitable receptacle.

70. 发明专利

GB479723A Bearing 未知
公开(公告)号：GB479723A
公开(公告)日：1938-02-10
申请号：GB1342837
申请日：1937-05-11
申请人： CINCINNATI GRINDERS INC
IPC分类号： F16C32/06
摘要： 479,723. Lubricating bearings. CINCINNATI GRINDERS, Inc. May 11, 1937, No. 13428. Convention date, June 2, 1936. [Classes 12 (i) and 12 (iii)] [Also in Group XXIII] The main shaft of a grinding-machine is mounted in tilting pad bearings, some pads 39 of which can have an initial pressure applied to them by screws 41. Axial thrust is taken up by a bearing 25 secured in the casing by rods 30, 32. The casing 18 is filled with oil under pressure, the rate of leakage from the casing being controlled by spring pressed rings 42 which have a small annular gap surrounding the shaft. Air and a small quantity of oil is removed from the casing by the pipe 58. In starting the device the lubricating motor 70 is first started by the switch 71, the pump 52 builds up pressure in the casing 13 and at a predetermined pressure the bellows 56 operate a relay to start the main driving motor 69.

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