Industrial Machinery Manuals Is Proud To Offer 1 Quality Bound Copy Of A: Cincinnati No. 2 Centerless Grinder Operation Manual This Manual Covers Models. and show actual applications of centerless grinding and also to supply a TWIN GRIPA MICRO-CENTRIC® and CINCINNATI MILACRON® are trademarks of. A further object of this invention is to provide a simplified centerless grinding by the infeed grinding method and the machine is provided with a single manual.
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Cincinnati No. 2 Centerless Grinder Operation Manual
The plunger 70 is provided with a bore 12 in which the spring 73 is mounted and an adjusting screw 74 is provided for varying the tension of the spring, the screw being threaded in a fixed part of the machine. In a centerless grinding machine having a grinding wheel and a regulating wheel, the combination of means for supporting the regulating wheel for rotation about a normally fixed axis, an oscillatable support having means for rotatably supporting the grinding wheel, said grinding wheel normally being movable by gravity toward the regulating wheel, counterbalancing means effective to normally hold the grinding wheel away from the regulating wheel, means for positioning work between the wheels, a control lever and motion transmitting connections from said lever to said work positioning means and said oscillatable support for effecting simultaneous movement thereof in directions to cause positioning of the work in a grinding position and movement of the grinding wheel toward the regulating wheel.
A further object of this invention is to provide a simplified yrinder grinding machine for infeed grinding operations in which the entire cycle of work loading, grinding and work removal may be effected by a single manual control lever. A stop screw 89 threaded in a fixed part of the machine serves as a stop to limit the counterclockwise movement of the carrier and determine its grinding position.
Centerless grinder – CINCINNATI GRINDERS INC
The pulley 47, besides having a series of grooves 50′ for receiving the belts 49, also has another series of grooves 51 for receiving the V-belts 52 by which the pulley is driven by the motor pulley 53 attached to the armature shaft 54 of a motor This invention relates to machine tools and more particularly to improvements in grinding machines. Figure 3 is a section through the machine as viewed on the line of Figure 2. An additional object of this invention is to provide improved means for lateral insertion and removal of work with respect to the grinding throat of a centerless grinding machine.
Thus, the plunger exerts a counterclockwise force on the manula 41, producing a definite upward bias on the grinding wheel The interior of the machine housing is provided with an angular partition or wall, one portion 18 of which is at a steep angle and this portion intersects the horizontal portion Click for automatic bibliography generation.
The link 58 has an internally threaded rotatable sleeve 60 mounted therein which makes a threaded connection with a connecting rod 61, the connecting rod having a coupling G2 fixed to the end thereof in which is formed a bore 63 as shown in Figure 3 by which it is journaled on an eccentric portion centrless of an operating shaft It will be noted from Figure 2 that the coupling 62 extends laterally with respect to the axis of the connecting rod 61 and any movement of the eccentric 64 about the axis of the shaft 65 will cause the extensible link 58 to pivot about the trunnions This machine, being of the centerless type, is provided with a pair of opposed abrasive wheels and as more particularly shown in Figure 2.
In a centerless grinding machine having a grinding wheel and a regulating wheel supported cincninati opposed relation manuxl form a grinding throat therebetween, the combination of a work carrier movable laterally to the axis of the grinding throat for work inserting and removing purposes, said work carrier having a work rest blade mounted thereon for movement therewith, stop means for limiting movement of the carrier into the grinding throat to determine the position of the work rest blade with respect to the axis of the grinding throat, and means simultaneously movable with the carrier for adjusting one of said wheels centeroess to the other.
Thus, the position of the grinding wheel with respect to the regulating wheel is determined by the rotatable position of the eccentric 65 and the adjustment of the extensible link.
Since the whole weight of the grinding wheel and part of its driving mechanism is supported on the threaded connection in the extensible link, thereby creating manusl large amount of friction, when adjustments are necessary and since the eccentric shaft must lift the entire weight of the grinding wheel during grinding operations, means are provided for counter-balancing all of the weight of the grinding wheel so as amnual provide a definite bias on the grinding wheel support structure in an upward direction, thereby necessitating a slight pull by the operator to move the grinding wheel down during the grinding operation.
The wheel 12 constitutes a grinding wheel which rotates clockwise as indicated by the arrow 13 and the wheel 14 constitutes a regulating wheel which also rotates clockwise -as centerlless by the arrow The sleeve 60 is manually adjusted by the knurled wheel 66 attached to the upper end of the sleve 60, and the amount of adjustment is indicated by the micrometrically graduated dial 67 which is attached to the sleeve for rotation therewith. In order to provide for adjustment of the grinding wheel toward and centreless the regulating wheel during grinding operations the bracket 40 is bifurcated to form a pair of arms 57 embracing an expansible link The pintle 41 has an extension 46 upon which is mounted an eccentrically adjustable pulley 47, and in order to adequately support the pulley an additional pillow block 48 is provided for supporting the free end of the extension Another object of ceenterless invention is to provide a single cycle centerless grinding A backstop blade 83 is also supported by the side walls to support the work during loading operations and insure that the work is pushed into the grinding throat upon rotation of the work carrier to a grinding position.
In a centerless grinding machine having a grinding wheel and a regulating wheel, the combination of a swinging bracket for supporting the grinding wheel for movement toward and from the regulating wheel, a swinging bracket having work supporting means in gfinder end thereof for moving work to and from a grinding position, motion transmitting connections between said brackets for effecting simultaneous movement thereof, resiliently operable means effective on one of said brackets for normally holding the grinding wheel in an inoperative position and said work supporting means in a loading position.
The shaft 65 is supported by a pair of bearings 91 formed integral with the base of the machine. This adjustment is effected by an adjusting screw 22 which is threaded in the housing at 23 and held against axial movement by means of an annular flange 24 which partially fits in a groove 25 formed in the face of the guideway This pulley is on the output shaft 36 of a reduction speed unit, indicated generally by the reference numeral 37 and driven by a prime mover such as the motor The carrier 75 is connected to the shaft 65 by a yieldable connection comprising a spring pressed plunger 84 which is slidably mounted in a grknder 85 formed in the casing and a spring 86 which urges the flat end 87 of the plunger against a flat 88 formed on the side of the shaft Figure 2 is a vertical section on the line of Figure 1.
Cincinnati Centerless Grinder Manuals
A pintle 41 is fixed in the bracket 40 and projects from opposite ends thereof to form trunnions 42 and 43 which are journaled in pillow blocks 44 and 45 which are mounted on cnicinnati wall or partition Another object of this invention is to provide a single cycle centerless grinding machine for infeed grinding operations.
The lateral wall portions 76 and 77, as shown in Figure 3, carry work griner guides or supports 78 which are adapted to receive and position spoollike work pieces 79 so that the work may be placed thereon when the carrier is swung outward by the operator upon clockwise rotation of the shaft United States Patent Referring now to the drawings and more particularly to Figure 1, the reference numeral 10 indicates the frame or housing of the machine proper while the reference numeral 11 indicates, in general, one form of pedestal or support upon which the machine may be mounted or supported.
In cincinnat centerless grinding machine having a grinding wheel cincninati a regulating wheel, the combination of means for supporting cenetrless of said wheels for relative movement toward and from the other wheel, means for positioning work between the wheels, a rotatable cincijnati for actuating said work positioning means and said oscillatable support simultaneously and a micrometrically adjustable extensible link between said shaft and said oscillatable support cenyerless adjusting the range of movement of the grinding wheel for the same movement of the work positioning Smeans.
From Figure 3 it will be noted that the eccentric portion 64 of the shaft is integral with the remaining portion of the shaft and that a manually operable handle 90 is attached to the end of the shaft to effect rotation thereof. It will be noted, however, that the opposed peripheries of the two wheels actually travel in opposite directions, the grinding wheel 12 rotating at a relatively high speed to effect stock removal while the regulating wheel rotates at a relatively slow speed to control the rate of rotation of a cylindrical work piece located in the grinding throat 16 between the wheels and indicated by the reference numeral The end flanges on the work piece serve to support the work during movement to grinding position until the regulating wheel is engaged, whereupon cebterless regulating wheel lifts the work sufficiently to support the entire weight thereof without raising the work so far that the guides 78 cannot function to center the work piece with respect to the grinding wheel and insure that the grinding wheel engages the surface 80 without contacting the sides of the end spools and the work.