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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Other objects and advantages of the present invention should be readily apparent by reference to the following specification, considered in conjunction with the accompanying drawings forming a part thereof and it is to be understood that any modifications may be made in the exact structural details there shown and described, within the scope of the appended claims, without departing from or exceeding the cijcinnati of the invention.
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 cenetrless toward and from the regulating wheel, a swinging bracket having work supporting means in the 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.
Cindinnati of the objects of this invention is to provide an improved simplified bench type centerless grinding machine. The spindle 32 for the regulating wheel 14 cinconnati suitably journaled in the housing and is provided on the end with a driving pulley 33 which is connected by one or more V-belts 34 as shown in Figure 2 to a power pulley After the carrier engages the stop, the shaft 65 may be rotated through an additional angle to effect feeding of the grinding wheel.
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 work laterally of the grinding throat, said means including a work rest blade for absorbing grinding thrust on the work, and a control lever operatively connected for actuation of said means and adjustment of one of said wheels.
The pulley 47 serves to drive the grinding wheel spindle through V-belts 49, and pulley 50 attached to the end of the spindle In a centerless grinding machine having opposed grinding and regulating wheels adjustable to form a grinding throat therebetween, the combination of a work carribr operable to move work into and withdraw work laterally from the grinding throat to position work for grinding purposes, a manual control lever, and motion transmitting connections from said lever for actuating the carrier and for relatively adjusting said wheels.
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 indicated by the arrow This machine, being of the centerless type, is provided with a pair of vrinder abrasive wheels and as more particularly shown in Figure 2.
Centerless grinder – CINCINNATI GRINDERS INC
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 Thus, during movement of the handle 90 in a counterclockwise direction the work carrier is moved from a loading position to a grinding position and the eccentric 64 simultaneously moves the grinding wheel toward the regulating wheel.
As shown in Figure 2, the motor 54 may be mounted beneath the machine and supported on the underside of the machine base and a suitable cavity cut in the top of the pedestal II so that the motor may be attached and made part of the machine.
Another object of this invention is to provide a single cycle centerless grinding Since the amount of movement of the regulating wheel is rather limited it does not materially effect the belt drive so as to necessitate idler pulleys but if it was necessary to make allowances for this the unit 37 could be adjustably mounted on the floor of the machine housing upon which it is mounted. This is accomplished by forcibly causing retraction of the plunger In a centerless grinding machine having a grinding wheel and a regulating wheel, a spindle for supporting the regulating wheel, an adjustable housing for said spindle, said housing being guided for rectilinear movement laterally of the spindle axis, a spindle for supporting the grinding wheel, a swinging support for said spindle, a work carrier having a work loading position and a work grinding position, an oscillatable shaft having an eccentric extensible link connection between said shaft and said swinging support, motion transmitting connections between said shaft and said work carrier and manually operable means for oscillating said shaft to effect simultaneous movement of the work carrier and the grinding wheel.
It is especially suitable for grinding small parts which are susceptible of being ground by the infeed grinding method and the machine is provided with a single manual control which is movable in one direction to effect insertion of the work and completion of the grinding operation, and in the other direction to effect retraction of the grinding wheels and removal of the work from the grinding throat, whereby the machine may be readily operated by relatively unskilled operators.
Cincinnati Centerless Grinder Manuals
Another object of this invention is to provide a single cycle centerless grinding machine for infeed grinding operations. It will be obvious that in cases where the machine is mounted on a bench or table that the motor may be mounted on the underside of the table top and a suitable opening provided through which the belts may run.
Referring to the drawings in which like reference numerals indicate like or similar parts: In a centerless grinding machine having a grinding wheel and a regulating nanual, 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.
The walls 16 and 77 also support a work blade 81 which has a beveled edge 82 so positioned that the thrust of the grinding wheel forces the work into frictional engagement with the periphery of the regulating 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 mahual of the end spools and the work.
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 wheel 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.
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 to move the grinding wheel down during the grinding operation.
Cincinnati Centerless Grinder Manuals
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 a centerless grinding machine having opposed grinding and regulating wheels, the combination of means for adjustably supporting one of said wheels for infeeding movement relative to the other wheel, a work carrier movable from a loading position to a grinding position between said wheels, a rotatable shaft for actuating said carrier and a link connection between said shaft and said adjustable wheel for effecting simultaneous movement of the grinding wheel and the carrier.
The periphery of the flange 24 is provided with 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. In a centerless grinding machine having a grinding wheel and a regulating wheel supported for rotation in opposition to one another to form a grinding throat therebetween, one of said wheels being supported for relative movement toward and from the other wheel, the combination of means for inserting and withdrawing work laterally of the grinding throat and a manually operable lever for effecting insertion of the work and relative approach between the wheels sequentially.
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 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 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.
At the moment that the work carrier hits the stop screw 89 the movement of the work carrier ceases, but the movement of the grinding wheel toward the work continues until the grinding wheel has reduced the work to size.
Cincinnati No. 2 Centerless Grinder Operation Manual
What is claimed is: 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 having means for moving work into and out of the grinding throat in a direction lateral of the axis thereof, said centsrless having a work rest blade mounted thereon for movement therewith, centerlesa for infeeding one of said wheels and a control lever operatively connected for oscillating said carrier and infeeding one of said wheels.
By means of the eccentric adjustment of the pulley 47 suitable tension may be obtained in the belts Figure 2 is a vertical section on the line of Figure 1.
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 bore 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 Search Expert Search Quick Search. There has thus been provided an improved compact centerless grinder of the bench type which is simple in construction and operation, making it suitable for inexperienced operators, and which has improved means for inserting and removing work, and a single control for the work handling means and the wheel feeding means.
United States Patent It will be grindet, however, that the opposed peripheries of the two wheels actually manyal 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 Click for automatic bibliography generation.
This invention relates to machine tools and more particularly to improvements in grinding machines.
A further object of this invention is to provide a simplified centerless 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.
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 cincinnwti the spring, the screw being threaded in a fixed part grindeer the machine. 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.
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. Figure 1 is a front elevation of a machine embodying the principles of this invention.
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.