The invention covered by the patent in suit is a process for rebuilding worn automotive crankshafts and the like by welding and regrinding. The inventor, Mr. Allen, had previously been engaged in the "undersized" grinding business which consisted of grinding the bearing surfaces of a worn crankshaft to a smaller diameter.

US2600824A US121407A US12140749A US2600824A US 2600824 A US2600824 A US 2600824A US 121407 A US121407 A US 121407A US 12140749 A US12140749 A US 12140749A US 2600824 A US2600824 A US 2600824A Authority US United States Prior art keywords axis adjustment slide crankshaft throw Prior art date Legal status (The legal status is an assumption and is not …

A method of grinding crankpin journals on a crankshaft in which the crankshaft is rotated about its central longitudinal axis. Abrasive belts are moved along paths substantially perpendicular to the crankshaft such that the abrasive surfaces of the belts grind the crankpin journals while the crankshaft rotates. The belts are guided independently of one another at the point of contact with the ...

Abstract: A method for determining residual stress in a selectively hardened parts including an unhardened region adjacent to a hardened region is provided. The method includes obtaining a Barkhausen Noise (BN) value for the unhardened region and selecting a corresponding absolute residual stress value from a correlation between BN values and absolute residual stress values.

TECHNICAL FIELD. This invention relates to crankshaft pin grinders and particularly to a belt grinder for crankshaft pins. BACKGROUND. It is known in the art relating to the manufacture of crankshafts to use a grinding wheel to finish grind the crank pins which are eccentrically mounted with respect to the crankshaft axis of rotation.

Patents for B24B 5 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane …

US2349108A - Crankshaft grinder - Google Patents Crankshaft grinder Download PDF Info Publication number ... grinding arm screw crankshaft Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status ...

The present invention is embodied in a crankshaft grinding machine having a pair of adjustable locators for locating the crankpins before grinding. One locator is an adjustable vee block locator wherein the vee block sides are relatively movable to accomodate a range of crankshafts having different throws and different crankpin diameters.

What is claimed is: 1. A method of crankshaft hardening comprising: grinding surfaces of a green crankshaft to produce a green ground crankshaft and to define journal geometry thereon prior to hardening of the surfaces to avoid loss of compressive stresses associated with grinding of a hardened crankshaft; and laser hardening the surfaces of the green ground crankshaft to induce compressive ...

Crankshafts grinding machines for automotive-rebuilding works. AUTOMOTIVE - REBUILDING. THE MOST COMPLETE RANGE. OF CRANKSHAFTS GRINDING MACHINES. REBUILDING LINE. The rebuilding line is a range of crankshaft grinding machines for the engine rebuilding, for crankshaft from 600 mm to 14 meters. MANUFACTURING LINE.

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A crankshaft grinder comprising a grinding wheel having a circular cutting surface, and an axis of rotation lying in a plane perpendicular to the axis of the surface which is to be ground, driving means for said grinding wheel, a guide arm assembly, a hinge connection between said grinding wheel and guide arm assembly, and manual means for ...

US2531160A US691554A US69155446A US2531160A US 2531160 A US2531160 A US 2531160A US 691554 A US691554 A US 691554A US 69155446 A US69155446 A US 69155446A US 2531160 A US2531160 A US 2531160A Authority US United States Prior art keywords shaft grinding wheel grinding tool cylinder Prior art date Legal status (The legal status is an assumption and is not a …

A machine grinding system is provided for machine grinding the main bearing journals, pin bearing journals, the post surface, gear-fit wall surface, and the flywheel flange surfaces of a four cylinder crankshaft. The system includes three operating stations, each operating station only requiring one machine to maintain the desired production rate.

Justia Patents US Patent Application for Crankshaft and camshaft grinder Patent Application (Application #20060111020) Crankshaft and camshaft grinder . Nov 22, 2005 - An apparatus for grinding a surface of a nonstraight elongated workpiece has a frame, drives on the frame for rotating the workpiece about a longitudinal workpiece axis, and a ...

A process for successive grinding of crankpins of crankshaft by a grinder includes clamping the crankshaft at two spaced center journals thereof and rotating the crankshaft around the axis of a crankpin to be ground. To enable the maintenance of highly acurate production tolerances even for small quantities and large crankshafts in an economical manner, only crankpins directly adjacent to the ...

A crankshaft grinding machine comprises a chuck for mounting the crankshaft for rotation about the axis of the main bearing pin and a grinding wheel mounted for reciprocation in relation to the crankshaft on a slide for movement perpendicular to the axes of rotation of the crankshaft and the grinding wheel. A crank drive reciprocates the slide, the lengths of the cranks of the crankshaft and ...

A patent, a group of three concentric circles: double roller structure extends the principle of precision grinding, higher and more stable Second, the patent is the second and the third: Valve clip to press and release using the cam and the principle of helical, …

Huda Haijie (Hunan) Engineering Technology Co. Ltd. is the Hunan University for technical support, professional high-tech enterprises engaged in high-end CNC grinding equipment and special rail transportation equipment, is the national industrial base of high efficiency grinding technology Engineering Research Center, is the Ministry of high ...

Grinding machine for pins of heavy crankshafts on which the crankshaft is eccentrically mounted in a rotatable clamping arrangement on both sides, where the crankshaft pin to be ground is located in the rotational center of the clamping arrangement and on which the pin can be ground with a grinding head of a cylindrical grinder, with at least one relief arrangement for the crankshaft to supply ...

A crankshaft is rotated about its central longitudinal axis and abrasive belts are moved along paths substantially perpendicular to the crankshaft such that the abrasive surfaces of the belts grind the crankpin journals while the crankshaft rotates. The belts are guided independently of one another at the point of contact with the crankpin journals along a variable path according to the ...

The grinding units are provided for the purpose of grinding the cylindrical surfaces of the crankpin journals 50 of the crankshaft. Each grinding unit comprises a frame having a pair of laterally spaced parallel side plates 60 and 62 which are disposed in planes at right angles to the crankshaft C and to the waybars 18 supporting the table 20 ...

BACKGROUND OF THE INVENTION. The invention relates to a process for successive grinding of crankpins of a crankshaft by means of a grinding attachment, for example a rotating wheel, in which process the crankshaft is clamped at two spaced center journals and is rotated around the axis of the crankpin to be ground, and to a grinder especially for implementing such process.

Justia Patents With Feeding Of Tool Or Work Holder US Patent for Crankshaft and camshaft grinder Patent (Patent # 7,172,494) Crankshaft and camshaft grinder . Nov 22, 2005 - EMAG Maschinenfabrik . An apparatus for grinding a surface of a nonstraight elongated workpiece has a frame, drives on the frame for rotating the workpiece about a ...

grinding in the early 1950s, Goltens' patents on its in-situ crankshaft grinding tooling revolutionized the industry with massive reductions in down time for owners coping with crankshaft failures and damaged journals. Through constant and focused R&D and field trial, Goltens has developed the most cutting-edge in-situ crankshaft machining ...

In addition, the drive movement of the grinding wheel 3 includes a stepper motor 13, which reports an additional rotation of the driving screw 12 with the gear ratio i X2 through the housing of the planetary-zivotnogo gear 11, you billet 2 crankshaft thermoabrasion at a constant contour speed const in addition movements simultaneously along two ...

A crankshaft grinding machine comprises a chuck for mounting the crankshaft for rotation about the axis of the main bearing pin and a grinding wheel mounted for reciprocation in relation to the crankshaft on a slide for movement perpendicular to the axes of rotation of the crankshaft and the grinding wheel.

A method of grinding a surface of a crankshaft is provided. The method includes grinding the surface of the crankshaft by a grinding wheel, and polishing the surface of the crankshaft ground by the grinding wheel by oscillating a polishing wheel in a transverse direction perpendicular to a longitudinal direction of the crankshaft.

US-2670580-A chemical patent summary.

MKS8140 high speed CNC Crankshaft Grinder, MKS8240 high-speed NC crankshaft grinding machine adopts imported computer and AC servo drive control system of axes motion, can be equipped with automatic measurement of radial and axial line, wheel ...

（）. 、、Assembly line Layout Conveyer Rivet table Rivetgun Screwdriver Electric screw driver Pneumatic screw driver worktable OOBA fit together fasten ...

crankshaft grinding in the early 1950s, Goltens' tooling patents revolutionized the industry with massive reductions in downtime for owners. Continuous R&D and field trials have given us the best tooling for crankshaft/ journal machining in the industry. This allows us …

US2484887A US670244A US67024446A US2484887A US 2484887 A US2484887 A US 2484887A US 670244 A US670244 A US 670244A US 67024446 A US67024446 A US 67024446A US 2484887 A US2484887 A US 2484887A Authority US United States Prior art keywords oct sheets filed sheet holer Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

To provide a drive force transmission device that is capable of transmitting elastic energy of an elastic member to an output shaft with a simpler structure than the structure of the related art. A drive force transmission device includes a first shaft (input shaft), and a second shaft (a crankshaft, a crank disc, an intermediate shaft). A force is applied to the second shaft in a ...

A method of supporting a workpiece having journal and eccentric regions, in a grinding machine for grinding the eccentric regions thereof, is described which involves mounting the workpiece in a headstock of the grinding machine, providing a coupling between the workpiece and a rotary drive mechanism for rotating the workpiece about its main axis and fitting around at least one remote journal ...

Abstract: A grinding system for grinding the crankpins on a crankshaft having an even plurality of symmetrically spaced pins comprising a number of cylindrical grinding machines equal to half the plurality of pins each for grinding a single pin located at a distinct radial and axial position, apparatus for depositing a crankshaft at a selected start location, apparatus for displacing the ...

machine model 3000/425 company SCHOU; machines REX of all sizes. Common to all analogues is the placement of balancing loads on the rear shank of the spindle, whereby balancing of rotating systems are static and frequency of crankshaft rotation during grinding journals is limited to values of 40, 48, 68 and (to machine small size) Ob/min.

1. A method of grinding a crankshaft having pin journals and main journals in a single set-up of the crankshaft on a grinding machine, comprising the steps of: clamping the crankshaft such that it rotates concentrically about the main journals; first rough-grinding at least the main journals, then finish-grinding the pin journals, thereafter finish-grinding the main journals, and grinding only ...