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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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 a 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 to provide a definite bias on the grinding wheel support structure in an upward direction, thereby necessitating a slight pull by the operator grindrr move the grinding wheel down during the grinding operation.
In a centerless grinding machine having a grinding wheel and a regulating wheel, the combination of means for supporting one of said wheels for relative movement toward and from the other wheel, means for positioning work between the wheels, a rotatable shaft for actuating said work positioning means and said oscillatable support simultaneously and a micrometrically adjustable extensible link between said shaft and said oscillatable support for adjusting the range of movement of the grinding wheel for the same movement of the work positioning Smeans.
In a centerless grinding machine having a grinding wheel and a regulating wheel adjustably mounted in opposed relation to form a grinding throat therebetween, the combination of oscillatable means for inserting and withdrawing girnder laterally of the grinding throat, said means including a work rest blade for absorbing cincunnati thrust on the work, and a control lever operatively connected for actuation of said means and adjustment of one of said wheels.
Thus, the plunger exerts a counterclockwise force on the shaft 41, producing a definite upward bias on the grinding wheel The end flanges on the work piece serve to support the work during movement to grinding position until the regulating wheel is engaged, whereupon the 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.
The shaft 65 is supported by a pair of bearings 91 formed integral with the base of the machine.
This invention aims to provide a small compact and simplified centerless grinding machine of such a nature that it may be mounted on a bench or table, or as shown in Figure 1 of the drawings upon a pedestal specially provided for the purpose. Another object of this invention is to provide a single cycle centerless grinding machine for infeed grinding operations.
The wall 18 is provided with a dovetailed guideway 20 as more particularly shown grinnder Figure 3 upon which a spindle housing 21 for the regulating wheel 14 is mounted for adjustment.
Cincinnati Centerless Grinder Manuals
The end of the screw is provided with a square head 26 to which a suitable socket wrench may be applied for rotating the screw. In a centerless grinding machine having a grinding wheel and a regulating wheel supported in opposition to form a grinding throat therebetween, the combination of an oscillatable work carrier grindder means for moving work into and out of the grinding throat in a direction lateral of the axis thereof, said carrier having a work rest blade mounted thereon for movement therewith, means for infeeding one of said wheels and a control lever operatively connected for oscillating said carrier and infeeding one of said wheels.
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 spring has sufficient tension to normally eliminate any lost motion between the carrier and shaft whereby during rotation of the shaft through an arc necessary to move the carrier from a grinding position to its work loading position the two move as a unit.
A fishtail gib 29 is provided for insuring a tight fit between the guide surfaces, and an adjusting screw 30 and lock nut 3 secure the gib to the slide 21 for movement therewith. A vincinnati 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 the wall or partition This is accomplished by providing a depending lug 69 from the shaft 41 for engagement by a spring pressed plunger 70 mounted in a bore 71 provided in the wall Figure 3 is a section through the machine as viewed on the line of Figure 2.
In a centerless grinding machine having a grinding wheel and a regulating wheel supported for rotation and in opposition to one another to fcrm a centerlsss throat therebetween, the combination of means for inserting and withdrawing work with respect to the grinding throat including a work rest blade, and a backstop plate for supporting the work during grindet into the grinding throat until picked up by the regulating wheel, said work rest blade being positioned to effect removal of the work during withdrawal of the carrier.
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. It should now be apparent that the work carrier is normally held in an outward position or at its work loading station with the grinding wheel elevated and that the normal grinding cycle is effected by moving the lever in a counterclockwise direction to move the work and work rest blade into the grinding throat and then effecting a downward movement of the grinding wheel to effect the grinding operation.
Gdinder 2 is a vertical section on the line of Figure 1. The annular surface 80 between the end flanges of the work is the surface to be ground and the grinding wheel 12 is made of sufficient width to engage the entire surface so that the grinding operation may be performed by what is known in the art as the infeed grinding method.
Centerless grinder – CINCINNATI GRINDERS INC
The regulating wheel 14 is made of sufficient width to also engage this surface with enough frictional pressure to rotate the work at a predetermined rate during the grinding operation. 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 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, crnterless 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 grinddr movement of the grinding wheel toward the regulating wheel.
Another object of this invention is to provide a single cycle centerless grinding The periphery of the flange 24 is provided grider micrometric graduations 27 and a pointer 28 fixed to the support cooperates with these graduations to indicate the amount of adjustment effeced by rotation of the adjusing screw.
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.
In a centerless grinding machine having a grinding wheel and a regulating wheel supported for rotation on parallel axes to form a grinding throat therebetween, the combination of a work carrier supported for oscillation about an axis parallel cincinnagi the axes of said wheels, a work rest blade mounted on the carrier for movement into the grinaing throat, additional centeroess on the carrier for supporting a work piece adjacent said blade whereby upon movement of the work into the grinding throat the blade will absorb the grinding thrust, and stop means for limiting the movement of the carrier.
In order to provide for adjustment of the grinding wheel toward and from the regulating wheel during grinding operations the bracket 40 is bifurcated to form a pair of arms 57 embracing an expansible link 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.
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. Search Expert Search Quick Search. The wheel 12 constitutes a grinding wheel which rotates clockwise as indicated by the arrow 13 and the wheel 14 constitutes a regulating wheel hrinder also rotates clockwise -as indicated by the arrow In a centerless grinding machine, the combination with a grinding wheel and a regulating wheel supported for rotation in opposition to one another to form a grinding throat, and means for supporting one of said wheels for movement toward and from the other, the combination of means for inserting and positioning a work piece in said throat, a control lever operatively connected for actuating said work inserting means and said wheel moving means and a yieldable connection for permitting subsequent movement of the wheel moving means after the work has been positioned.
In a centerless grinding machine having a grinding wheel and a regulating wheel, said grinding wheel being supported above the regulating wheel, a swinging bracket for supporting the grinding wheel in a manner to normally cause the cennterless to move by gravity toward the regulating wheel and resilient counterbalancing means effective on said support for holding the grinding wheel normally in a non-grinding position.