Showing papers on "Honing published in 1970"

Screw-shaped gear hone and method of forming and using the same

Abstract: A worm-shape or screw-shape hone, for honing gear teeth, has the tooth profile of the basic rack at its normal plane. The hone is formed by molding synthetic polymers in which there are dispersed abrasive particles, to provide a Shore hardness of 15* - 75* and a Young''s modulus 0.5 - 70 X 103 kg/cm2. The hone is engaged with the gear to be finished and is rotated by a motor with the hone driving the gear. During honing of the gear, the hone is fed parallel to the axis or tooth trace of the gear over the whole face width of the gear. The polymer material may comprise a cocured blend of polyurethane rubber and epoxy resin having a suitable flexibility, good resiliency and high abrasion resistance, and the abrasive particles may comprise Alundum or Carborundum, the abrasive particles being exposed at the working surface of the hone.

Lapping, honing or the like machines

Abstract: A machine for removing material from an internal surface of a workpiece and comprising a workpiece holder which is reciprocably mounted upon a support structure, a tool supporting member in the form of a spindle, the tool supporting member being driven by a motor means and the tool being mounted upon the spindle and connected to an actuator whereby the effective size of the tool can be adjusted. The workpiece holder includes a member which restrains angular movement of the holder and the member mounts a strain gauge whereby a signal can be obtained indicative of the cutting load exerted by the tool upon the workpiece.

Honing gear assembly

Abstract: A HONING GEAR ASSEMBLY COMPRISING A BACKING PLATE, A GEAR PLATE, AND A COVER PLATE, ALL BOLTED TOGETHER, AND MOUNTED ON A DRIVE SPINDLE HUB, WITH PIN AND BUSHING CONNECTIONS BETWEEN THE BACKING PLATE AND THE GEAR PLATE, WITH THE PINS OF SUCH CONNECTIONS BEING RECEIVED IN BLIND SOCKETS OF THE COVER PLATE, WITH THE HOLES OF THE GEAR PLATE BEING LINED WITH SHOCK ABSORBING BUSHINGS FOR ABSORBING SHOCKS TRANSMITTED FOR THE GEAR PLATE TO THE BACKING PLATE AND THUS TO THE DRIVE SPINDLE HUB.

Hand tool for sharpening cutting edges

Abstract: A HAND TOOL FOR SHARPENING CUTTING EDGES CHARACTERIZED BY A CURVED HONING SURFACE FORMED BY A LAYER OF ABRASIVE PARTICLES FOR SHARPENING EDGES OF THE CUTTING DEVICE SUCH AS A KNIFE WHICH CURVED SURFACE ENABLES THE SHARPENING OF KNIFE BLADES HAVING A SERRATED OR WAVERLY CUTTING EDGE. IN THE PREFERRED EMBODIMENTS THE TOOL HAS AN ELONGATED SLOT OR GROOVE WITH SIDEWALLS COVERED BY THE LAYER OF ABRASIVE PARTICLES TO PROVIDE A POINT SHARPENING DEVICE. THE ELONGATED GROOVE OF THE TOOL CAN BE PROVIDED AS A GEOOVE IN A SOLID BODY MEMBER OF THE TOOL OR AS A SLOT IN A TUBULAR BODY MEMBER OF THE TOOL, THE GROOVE CAN ALSO BE DEFINED BY EDGES OF ASSEMBLED HALVES FORMING THE BODY MEMBER OF THE TOOL, OR BY THE CURVED SURFACES OF A PLURALITY OF BODY MEMBERS ASSEMBLED TO FORM THE TOOL.

Precision honing machine

Abstract: A honing machine for rods of stepwise varying diameters having sensors for sensing the diameter and controlling magnetic valves for hydraulically moving the honing members into and out of engagement with a workpiece. The sensors are contact-free magnetic circuits, the reluctance of which depends on the degree of proximity of a workpiece so as to variably couple a current source to circuits for actuating the valves.

Chemical honing of dies

Abstract: Cooperating male and female cutting and creasing dies for blanking cartons and the like are produced by a chemical milling process and which process includes a final honing step which removes the sharp corners on the lands of the dies prior to installation thereby readying the dies for immediate full speed use on the machine.

Feeding device for machine tools

Abstract: This invention is to provide a simple and accurate device for automatically feeding workpieces one by one in order in a systematic manner to an operating part on one of the various kinds of machine tools, such as, the grinding machine, the superfinishing machine, the honing machine, lapping machine and so forth, and for delivering the finished workpieces to a predetermined place.

Improved honing apparatus

Abstract: 1,200,085. Grinding. DELAPENA HONING EQUIPMENT Ltd. 10 Sept., 1968 [12 Sept., 1967], No. 41575/67. Heading B3D. A honing tool comprises a rotatable hollow spindle 25 connected to a honing tool body having a stone holder or a plurality of stone holders movable radially in the body, a shaft 22 within, and rotatable relative to, the spindle to actuate means for moving the stone holders, and differential gearing connecting the spindle to the shaft and including a member or members 40, 41 capable of being restrained manually from rotation in such a manner that the restraint applied when the spindle is rotating can act through one or other of a pair of gear trains to vary the rotation of the shaft relative to the spindle. The tool has a drive plate 11 formed with a spigot for driving engagement with a honing machine, and a carrier 13 for planet gears 16, 21 mounted on pins 14, 15 in the plate and carrier. The gears 16 mesh with both an internal gear 17 having an outer periphery formed as a hand grip 40 and a gear 18 secured to a sleeve 19 rotatable in the carrier and connected to the shaft 33. The gears 21 mesh with a gear 22 formed on a sleeve rotatable on a sleeve portion of the carrier and integral with a hand grip 41, the sleeve portion of the carrier being connected to the hollow spindle. The spindle is connected by a member 29 to the body of the honing tool which includes a rod 39 connected by a screw- and-nut mechanism 38 or cam mechanism to the shaft 33 and when axially moved relative to the body of the tool radially adjusts the stone holders. If the hand grip 40 is held while the spindle 25 is rotating, the shaft 33 rotates faster than the spindle so that the stone holders are adjusted radially outwards, while if the hand grip 41 is held, the shaft 33 rotates slower, is held stationary or rotates in the reverse direction to adjust the stone holders radially inwards. In another embodiment, the stone holders are movable by raok-and-pinion means.

3-D Measurement And Visual CharacterisationOf Cylinder Liner Bore Polishing

Abstract: Wear in engine cylinder liners has long been a problem which has attracted considerable attention over the past 50 years. The surface of the liner is usually generated by a combination of base and plateau honing. The honed surface serves a dual function of providing good bearing capability as well as the ability to retain lubricant. Excessive wear can lead to the removal of the honing grooves and the formation of polished regions. These areas, known as bore polish, are detrimental to the overall performance of the engine and can lead to gas blow-by and scuffing. The engine testing industry, as part of their criteria for determining the performance of a lubricant, will inspect an engine liner for the size and frequency of these polished regions. The inspection of bore polish is a long and tedious process carried out by an inspector peering over the liner block with a torch and tracing the outline of polish regions onto an acetate sheet. There are numerous sources of errors and problems associated with this technique. In order to provide to provide a better insight into bore polishing the School of Manufacturing and Mechanical Engineering, in collaboration with an independent engine testing laboratory, investigated this phenomenon. This paper will describe the current inspection technique and introduce a method of visually characterising the degree of bore polish. In an attempt to quantify the polish categories recently-developed 3-D surface characterisation techniques were employed.