Cutter Grinder How to sharpen Milling Machine cutters Gear Cutting Machines Brown and Sharpe Mfg Co 1914 Brown & Sharpe Machine shop Machines book

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PROVIDENCE, R. I., U. S. A.
NO. 2 CUTTER GRINDING MACHINE
13
The No. 2 Cutter Grinding Machine is designed to be compact. It is adaptable to the requirements of the tool room or the shop and because it covers such a small amount of floor space it can be placed among a number of milling machines and not be in the way. Due to its capacity, staunchness, simplicity, and ease of operation, it has proved remarkably adaptable to production work as well as tool room work. It sharpens small shell or shank reamers, straddle or face mills, cutters and hollow mills, bevel cutters of any angle, and straight or taper milling cutters with shanks or holes. It takes 18' between centers and it grinds cutters and shell reamers to 6" in length and 6" in diameter. Thin milling cutters and saws to 24 " in diameter, can also be sharpened. 4 H. P. required to operate the machine at its maximum capacity. BASE: The base is stable and rigid to reduce vibration. It occupies 27" of floor space transversely and 34 " longitudinally with the spindle. The pedestal is 25" in diameter at the floor and the center line of the wheel spindle is 41 " from the floor. SPINDLE HEAD: The spindle head is traversed on accurately scraped ways by a handwheel that turns a screw in a bronze nut in the head. Adjustable gibs provide compensation for wear. The ways are protected from dirt by a shield that completely covers them.

LP - -wry,

FIG. 5 Section Through Wheel Spindle
WHEEL SPINDLE: The grinding wheel spindle is made of crucible steel and it is hardened, ground and lapped. The ends are accurately tapered to fit wheel sleeves.

17
The head consists of a swivel head similar to the one used on the right of the No. 3 machine, which is bolted rigidly to a slide. The slide is gibbed to the ways of the swivel carriage and is actuated by the hand lever, to which it is connected by the adjustable slide connection link. This motion is limited by adjustable dogs on the side of the swivel carriage. The entire End-Grinding Head has a rotary adjustment at the main sliding bar clamp.

FIG. 7
Recutting the End teeth of an End Mill on a No. 3 Machine with the End-Grinding Head
A graduated dial at the bar clamp swivel, indicates the correct angle to set the slide in grinding the end teeth of end mills. The graduations represent the angle required for the number of teeth.
a

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grinding a formed cutter" style="position:absolute;left:50;top:4500;width:990;height:675;">

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18 BROWN & SHARPE MFG. CO. FORMED CUTTER GRINDING ATTACHMENT The Formed Cutter Grinding Attachment shown in the accompanying illustration, can be used on both the Nos. 2 and 3 Machines. Straight gashed hobs as well as formed cutters can be ground radially on this attachment. It is not a part of the regular eauipment of the machine, but is supplied at an additional charge. The attachment is bolted at its upper end to the main slide bar and at the lower end it is clamped to the column. FIG. 8 Sharpening a Formed Cutter on a No. 2 Machine with the Formed Cutter Grinding Attachment The slide is actuated by a handwheel that turns a pinion meshing with a rack under the slide. The motion is limited by an adjustable stop on the front side. The slide can be clamped in place by the binding knob at the upper end. Standard Brown & Sharpe 41" Index Centers are adjustable along a T Slot in the slide and can be clamped by the special nuts with a pin wrench..

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19 BROWN & SHARPE MFG. CO. FORMED CUTTER GRINDING ATTACHMENT The Formed Cutter Grinding Attachment shown in the accompanying illustration, can be used on both the Nos. 2 and 3 Machines. Straight gashed hobs as well as formed cutters can be ground radially on this attachment. It is not a part of the regular eauipment of the machine, but is supplied at an additional charge. The attachment is bolted at its upper end to the main slide bar and at the lower end it is clamped to the column. FIG. 8 Sharpening a Formed Cutter on a No. 2 Machine with the Formed Cutter Grinding Attachment The slide is actuated by a handwheel that turns a pinion meshing with a rack under the slide. The motion is limited by an adjustable stop on the front side. The slide can be clamped in place by the binding knob at the upper end. Standard Brown & Sharpe 41" Index Centers are adjustable along a T Slot in the slide and can be clamped by the special nuts with a pin wrench..

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Page 21 list.
PROVIDENCE, R. I., U. S. A. 21 ACCESSORIES OF No. 2 CUTTER GRINDING MACHINE Do not use these numbers in ordering parts
1 Tooth Rest Bracket (Horizontal). 2 Tooth Rest Bracket (Vertical).
3 Sliding Shell (Large).4 Wheel Sleeves.
5 Tooth Rest Holder (Short). 6 Main Bar Stop. 7 Sliding Shell Step Collars.
8 Tool Rest Slide Bolt, Nut, and Washer. 9 Tool Rest and Slide.
10 Cutter Bar Arm. 11 Cutter Bar. 12 Mill Bushing Sleeve and Spring. 13 End-Grinding Head (Complete).
14 Wheel, Alundum 3860; Shape 27; Grade I. 15 Wheel, Alundum 3860; Shape 27; Grade 2E.
16 Wheel, Alundum 3860; Shape 21; Grade J. 17 Taper Shank Mill Bushing; (No. 7 Taper). 18 Taper Shank Mill Bushing; (No. 9 Taper). 19 Face and Straddle Mill Arbor. 20 Wheel Sleeve Wrench. 21 Center Support. 22 Set Screw Wrench. 23 i" Wrench. 24 2" Wrench. 25 26" Wrench. 26 Tooth Rest Swivel.
27 Tooth Rest Holder (Long).
28 Tooth Rest Holder Support. 29 Center Bar.

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PROVIDENCE, R. I., U. S. A. page 25 FIG. 12 Grinding a Coarse Tooth Spiral Milling Cutter The main bar is slid to the left leaving just enough projection on the right to support the cutter bar arm. Notice the bar stop with its elevating screw on the left. The cutter is mounted on the sliding shell and slipped on the cutter bar. By the adjustment of the tooth rest and the elevating screw on the bar stop, the work is given the proper angle for clearance. The main bar is clamped tightly and the cutter, mounted on the sliding shell, is passed across the face of the revolving wheel by sliding it along the cutter bar. Notice what a rigid guide is furnished the cutter by the vertical tooth rest support bolted to the tool rest bracket; in this position the tooth rest has vertical and horizontal adjustment.

page text 26 BROWN & SHARPE MFG. CO. FIG. 13 Grinding an Angular Cutter with the End-Grinding Head The cutter is mounted on a face mill arbor and put into the bushing in the swivel head. The spring and mill bushing sleeve are mounted on the projecting end of the arbor. The swivel head is set at an angle with the wheel, corresponding to the degrees in the angle of the cutter. The slide and carriage are set at any convenient working angle. The center distance of the cutter is obtained from the finger gauge flat. When the tooth rest is adjusted to this distance and placed in contact with a tooth it acts as an indexing gauge. Clearance is obtained by the adjusting screw in the main bar stop; it will elevate both head and work by its rotating effect on the main slide bar. By operating the hand lever a tooth passes across the face of the wheel.

page text 27 BROWN & SHARPE MFG. CO. FIG. 13 Grinding an Angular Cutter with the End-Grinding Head The cutter is mounted on a face mill arbor and put into the bushing in the swivel head. The spring and mill bushing sleeve are mounted on the projecting end of the arbor. The swivel head is set at an angle with the wheel, corresponding to the degrees in the angle of the cutter. The slide and carriage are set at any convenient working angle. The center distance of the cutter is obtained from the finger gauge flat. When the tooth rest is adjusted to this distance and placed in contact with a tooth it acts as an indexing gauge. Clearance is obtained by the adjusting screw in the main bar stop; it will elevate both head and work by its rotating effect on the main slide bar. By operating the hand lever a tooth passes across the face of the wheel.

page text 28 https://antiquemachinery.com/images-2020/Universal-Cutter-and-Reamer-Grinder-Machine-Brown-and-Sharpe-Mfg-Co-1929-No2-pg-28.jpeg BROWN & SHARPE MFG. CO. FIG. 13 Grinding an Angular Cutter with the End-Grinding Head The cutter is mounted on a face mill arbor and put into the bushing in the swivel head. The spring and mill bushing sleeve are mounted on the projecting end of the arbor. The swivel head is set at an angle with the wheel, corresponding to the degrees in the angle of the cutter. The slide and carriage are set at any convenient working angle. The center distance of the cutter is obtained from the finger gauge flat. When the tooth rest is adjusted to this distance and placed in contact with a tooth it acts as an indexing gauge. Clearance is obtained by the adjusting screw in the main bar stop; it will elevate both head and work by its rotating effect on the main slide bar. By operating the hand lever a tooth passes across the face of the wheel.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.

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PROVIDENCE, R. I., U. S. A. 29 FIG. 16 Formed Cutter Grinding Attachment A formed cutter is shown on an arbor between the index centers. The beveled wheel can be made central with the work by the end adjustment of the wheel spindle, or the Attachment can be adjusted at variable distances along the main bar and supporting shaft on the column. The indexing stop is disengaged and the worm is meshed with the index wheel in order to revolve the cutter without indexing it. By bringing the wheel up to the work, the depth of the cut can be adjusted; then by loosening the binding knob the slide can be reciprocated by the handwheel until each tooth has been ground. By using raising blocks, cutters to 8" in diameter can be ground.