CINCINNATI CENTERLESS GRINDER MANUAL PDF

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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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 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.

It will be obvious that in cases where the machine is mounted cincinnzti 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. 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.

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 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 In a centerless grinding machine centeress 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.

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. One of the objects of this invention is to provide an improved simplified bench type centerless grinding machine. At the moment that the grijder 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.

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.

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 cehterless centerless grinding machine having opposed grinding and regulating wheels one of which is supported for rotation about a rela- Ir ‘I I II Il ‘I griner fixed axis and the other of cinicnnati is supported for rotation about a movable axis, the combination of a work carrier movable between a work loading position and a work grinding position, a stop for determining the grinding position of the carrier, a manual control lever, motion transmission connections between said lever and said carrier, and wheel moving means whereby upon movement of the lever in one direction the work carrier will be swung to a grinding position and relative approach will be effected between the wheels, said motion transmitting connection between the lever and work carrier being yieldable whereby the lever may be moved an additional distance after the centefless carrier has been positioned to effect a subsequent additional movement of the grinding wheel cincinnait effect the grinding operation.

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.

Cincinnati No. 2 Centerless Grinder Operation Manual

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.

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 spirit of the invention.

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 2 is a vertical section on the line of Figure 1. 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.

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. 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.

This invention relates to machine tools and more particularly to improvements in grinding machines. What is claimed is: 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.

Centerless grinder – CINCINNATI GRINDERS INC

Thus, the plunger exerts a counterclockwise force on the shaft 41, producing a definite upward bias on the grinding wheel In a centerless grinding machine having a grinding wheel and a regulating wheel supported in opposed relation to 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 relative to the other.

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. 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 A fixed reference mark 68, as shown in Figure 1, cooperates with the dial to indicate the amount of adjustment effected.

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. The grinding wheel Figure 1 is a front elevation of a machine embodying the principles of this invention.

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 the wall or partition 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 cincinnatu in the grinding throat 16 between the wheels and indicated by the centetless numeral Cincimnati 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 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 grinding throat therebetween, the combination of means for inserting cincinnsti withdrawing work with respect to the grinding throat including a work rest blade, and a backstop plate for grindeg the work during movement into the grinding throat until picked up by the regulating wheel, said work rest blade being positioned to effect removal of the work manuual withdrawal of the carrier.

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 Another object of this invention is to provide a single cycle centerless grinding 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 position of the grinding wheel with respect to the regulating wheel is determined by the manhal position of the eccentric 65 and the adjustment of the extensible link. The work is moved into and out of the grinding throat by an oscillatable work carrier 15 which is supported manua, the shaft 65 and is in the form of a housing which surrounds the regulating wheel for protection of the operator.

The spindle 32 for the regulating wheel 14 is 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 cdnterless as shown in Figure 2 to a power pulley By means of the eccentric adjustment of the pulley 47 suitable tension cincinnnati be obtained in the belts The pulley 47 serves to drive the grinding wheel spindle through V-belts 49, and grinxer 50 attached to the end of the spindle 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.

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.