Abstract: A boring machine used for a line boring bearing housings of an automotive engine block which provides for very secure mounting and precise operation by having rigidity built into the mounting table but yet is low cost, easy to fabricate, and readily adapted to a wide variety of different sizes of engine heads.

Abstract: A gage for indicating the runout condition of a valve seat edge formed by and between adjacent surfaces of a valve seat adjacent one end of a valve guide bore and concentric with the axis thereof, the valve guide bore accommodating an elongated pilot member that extends therefrom through the valve seat surfaces. The gage comprises a housing member adapted to be mounted on the pilot member in fixed spaced relationship from the valve seat and having a dial indicator mounted thereon at a location spaced radially from the pilot member, and a work engaging member mounted for rotatable and axial movement on the pilot member in the space between the housing and the valve seat. The dial indicator has a plunger member extending therefrom substantially parallel to the pilot member and an indicator needle operatively connected to the plunger member and movable in response to movements of the plunger member to produce a visual indication as to the position of the plunger member.

Abstract: A rotating cutting tool has a clamping system that positively locks generally square or rectangular carbide cutters into position on the cutter head and extending outwardly from the head for spot facing or boring as the head is rotated. The head has backing supports that are raised above the head end surface for backing and securely holding the carbide inserts to prevent breakage or damage. The clamping system is very rapidly used, and particularly in the case of a spot facer, by having a proper diameter pilot pin member in the center, the carbide cutter inserts can be quickly adjusted for the desired cutting diameter. The unit has no flutes as normally required for high speed or sweated carbide spot facers.

Abstract: A honing machine having capability to hone surfaces at different angular orientations using rocking motion to produce the stroking when honing in one orientation and linear motion to produce the stroking when honing in a different angular orientation, including a support structure mounted for linear movement on a rail and an arm assembly extending from the support structure, the arm assembly being pivotal on the support structure to produce the rocking motion in the one orientation of the support structure, the arm assembly moving with the support structure in the other angular orientation thereof to produce the linear movement thereof. The machine also includes latch device to maintain the support structure in the one orientation thereof. The latch device includes a mechanism to control the limits of stroking in the one orientation, and it includes apparatus to counterbalance the arm assembly.

Abstract: A mounting assembly for attaching a first member to a second member such as for attaching a disposable work engaging assembly to a master holder assembly comprising a first member having opposed surfaces and at least one opening extending therethrough between the opposed surfaces, a second member formed of a malleable material having a corresponding number of tubular portions projecting therefrom at locations to register with and to be insertable into the openings in the first member, each of the tubular portions having a passageway extending therethrough formed at least in part by a non-round portion in the area thereof that extends through the opening in the first member, and a tool member having a work engaging end portion adapted to be positioned extending respectively into each of the passageways extending through the tubular portions, rotation of the tool member forcing the tool work engaging end portion into engagement with the non-round portion of the passageway extending through each of the tubular p

Abstract: A honing mandrel having six circumferentially spaced work engaging members thereon including a body portion with a pinion gear rotatably mounted therein, a pair of opposed honing assemblies and a pair of opposed guide assemblies each having rack gear members extendable into transverse body bores for cooperating with the pinion gear, each of the honing assemblies having two circumferentially spaced work engaging honing members thereon, and each of the guide assemblies having a single work engaging guide member thereon, the honing members on the honing assemblies moving on chords of a cylindrical work surface during expansion and contraction thereof, and the guide members on the guide assemblies in one embodiment moving on chords of the work surface during expansion and contraction thereof and in another embodiment moving on or adjacent to a diameter of the work surface during expansion and contraction thereof.

Abstract: An improved drive chain for a machine tool such as honing device comprising a machine tool with at least one radially movable work engaging assembly thereon, a power train operatively connected to the honing device to rotate same, and a feed motor positioned in the power chain and rotatable therewith, the feed motor being operatively connected to a power source and to the machine tool whereby energization of the feed motor changes the radial positions of the work engaging assemblies on the honing device. The invention also resides in the rotatable power chain with a motor mounted therein, novel electric contacts for introducing energy to the rotating motor and a novel control circuit for supplying power from the power source to the feed motor.

Abstract: A mounting assembly for an abrasive member comprising a support structure including a plate member having opposite surfaces and at least one opening extending therethrough between the opposite surfaces, a stone assembly for mounting on the plate member including a backing member having opposed surfaces one of which is to be placed adjacent to one of the opposite surfaces of the plate member, an abrasive member mounted on the other opposed surface of the backing member, tubular members corresponding in number to the number of openings in the plate member formed on the one opposed surface of the backing member at locations to register with and to be insertable into the corresponding openings in the plate member, and a member for threading or otherwise forcing into each respective tubular members when positioned extending into corresponding ones of the spaced plate openings to expand their tubular members outwardly in the corresponding plate openings to make a tight engagement with the plate member.

Abstract: An improved guide assembly for a honing mandrel including an elongated support member having opposite surfaces and spaced side edges, the contour of the elongated member being such that portions of the elongated member are able to flex relative to each other, at least two elongated parallel rack gear members having corresponding ends connected at spaced locations to extend in parallel relation extending perpendicularly from one of the opposite surfaces of the elongated member, and an elongated work engaging member having a first portion positioned adjacent to the elongated support member on the surface thereof opposite from which the rack gears extend and a second portion extending outwardly from the first portion for engaging a surface to be honed, and means connecting the work engaging member to the elongated member.

Abstract: A tool and a grinding member for installing thereon comprising a support structure having inner and outer portions journaled for relative rotational movement, a guide member for mounting on an object having a surface to be ground, the guide member having a cylindrical portion that extends from the object in a position centered on the axis of the surface to be ground, the inner portion of the support structure having a surface for making sliding engagement with the cylindrical guide portion, a work engaging member for mounting on the outer portion of the support structure in position to engage the surface to be ground when the tool is moved axially along the cylindrical portion of the guide member, the work engaging member having a surface portion contoured to the desired shape of the surface to be ground and having surface grooves formed therein at spaced locations extending thereacross, and a layer of relatively hard, wear resistant materials and a binder formed on the contoured surface of the work engaging

Abstract: An apparatus for controlling the application of feed motion to a working member in a machine such as a honing machine including a working member mounted on a support structure or mandrel and movable thereon into engagement with the work surface, mechanism movable to advance the working member under pressure into engagement with the work surface, and other mechanism to predeterminately control and limit the feed motion, independent of pressure, the other mechanism comprising a dash pot assembly having relatively movable portions one of which is pivotally attached to the machine and the other of which is axially movable relative thereto, a spring normally biasing the portions of the dash pot assembly together into a predetermined inoperative condition, cooperatively engageable cam and cam follower members including mounting structure therefor operatively engageable with the other portion of the dash pot assembly, a link member operatively connecting the cam follower member to the feed up mechanism on the machin

Abstract: An apparatus adapted to be installed for rotation on a machine and having a portion for receiving and supporting a working assembly such as a honing mandrel and a mounting adapter therefor including a mounting member for attaching the apparatus to a machine a first member having a first portion at one end for attaching to the mounting member and a tubular portion at the opposite end having a first bore of predetermined diameter adjacent to the inner end thereof and a second bore portion of greater diameter extending to the opposite end thereof, a second member positioned extending into the bore in the first member from the opposite end thereof and having an internal bore therein, the second member being constructed to permit some bending thereof, a portion on the outside diameter of the second member being the same as the predetermined diameter of the first bore portion of the first member for engagement therewith, the rest of the second member being of less diameter than the second bore portion, first and se

Abstract: An alignment fixture for use with an adjustable spindle nose device that rotatably supports a working member such as a honing mandrel to axially align the mandrel so that it rotates about a fixed axis along its length, the fixture comprising a housing having attached structure for mounting on a machine adjacent to a rotatable member to be aligned, an adjustable contact assembly including a first contact member mounted on the housing in position to engage the member to be aligned at one location therealong, a second contact assembly including a second contact member spaced from the first contact member for engaging the member to be aligned, apparatus for movably supporting the second contact assembly on the housing in position so that the second contact member is biased into engagement with the member to be aligned at a location axially spaced from the adjustable contact, an indicator assembly on the housing including a graduated scale and an indicator member movable relative to the scale, an operative connect

Abstract: A precision honing device including a substantially tubular honing member having an outer work engaging surface, an axially tapered inner surface, a full length slit through the device along one side thereof, and a layer of a relatively hard wear resistance abrasive substance applied to the outer work engaging surface, the work engaging outer surface of the device having an axial taper formed by a first portion extending to adjacent one end that has a first rate of taper, a second portion extending to adjacent the first portion having a rate of taper that is less than the rate of taper of the first portion, and a third tapered portion extending from the second portion on the opposite side thereof from the first portion, the third portion being axially tapered at a reverse taper relative to the tapers of the first and second portions, the taper of the first portion causing a greater rate of stock removal during honing than the taper of the second portion.

Abstract: An adapter for a honing mandrel for finishing the interior surfaces of bores using a honing mandrel having an abrasive member positioned in an opening therein, a wedge member for radial adjustment of the abrasive member during a honing operation to maintain the abrasive member engaged with the bore being honed, the improvements comprising an adapter having means for receiving and supporting the honing mandrel, the adapter including a wedge engaging member adjustable thereon to engage the wedge member to permit longitudinal movement thereof in the mandrel but to prevent radial movement thereof, the adapter also including a pair of angularly related mandrel engaging and locating surfaces against which the mandrel is positioned during installation on the adapter, a threaded member adjustable in the adapter to maintain the mandrel against said locating surfaces, an elongated member having one end attached to said adapter and on an opposite end, said elongated member being biased under spring tension into engageme

Abstract: A knurling tool including an elongated body member having opposite ends and a bore extending therein from one end, the bore being spaced from and acutely angularly related to the axis of the body and extending in part through the side of the body, the bore having an enlarged portion intermediate the ends thereof, an elongated roller having an enlarged annular portion intermediate the ends thereof positioned in the body bore, with the enlarged roller portion being positioned in the enlarged bore portion, the enlarged roller portion being defined by an annular side surface angularly oriented relative to the axis thereof, and a pilot member cooperatively engageable with the body member and with the roller in position to trap and hold the roller in the bore.

Abstract: A device for coupling members such as driving and driven members so as to permit limited relative angular movement therebetween including a first member having an end with a bore extending thereinto, the bore having a polygonal shaped bore portion formed by a plurality of flat surfaces, a coupling portion on the other member having a polygonal shaped head formed by a plurality of side surfaces which are rounded axially and an end surface, the respective rounded surfaces on the head being engageable with respective flat surfaces of the polygonal shaped bore portion, a cross-bore through the first member intersecting the bore therein, and a cross-bore through the coupling portion in position to register with the cross-bore in the first member, a pin member extending through the registered bores to hold the members together and yet permit some relative angular movement therebetween, a bearing member positioned in the bore in the first member in position to engage the end surface of the head on the coupling porti

Abstract: A gaging head for the in process gaging of a surface such as a cylindrical surface while it is being honed, ground, or machined by a device which increases the diameter thereof, said head having a work engaging portion of a size and shape to accurately test measure the diameter of the surface, a portion for attaching it to a gaging device, and an adjustment feature for adjusting the work engaging portion to increase the preset accuracy thereof. The present invention also resides in a novel fixture for preadjusting the subject gaging heads.

Abstract: Improved guide means for supporting a rotatable member or mandrel during reciprocating motion thereof including a machine feed portion having a pair of guide rails spaced apart on a fixed support structure, a plurality of longitudinally spaced support members for supporting each of the guide rails at spaced locations therealong, each of which has an upwardly facing rail engaging surface defined by angularly related surface portions, a carriage structure having spaced rail engaging support members mounted for movement on the respective rails, and apparatus associated with the rail support members including mechanism adjustable to precisely align the support members with the respective rails.