Disclosed is a wheel front burr cleaning device. The device is composed of a rack (1), a lifting cylinder (2), a support frame (3), guide posts (4), guide sleeves (5), a lifting table (6), a brush (7), bearing seats (8) and the like, wherein a servo motor I (11) is fixed on the side of the rack (1), the output end of the motor is connected with a turnover platform (10) via a coupling (12), the middle part of the turnover platform (10) is a cuboid, circular shafts are arranged on the left side and right side of the turnover platform (10), and the shafts are matched with bearings (9); and the structures above and below the turnover platform (10) are completely consistent, wheel positioning clamping rotating systems are distributed symmetrically, and the servo motor I (11) controls the turnover platform (10) to rotate 180 degrees every time, thereby realizing cyclic switching of the positioning clamping systems above and below the turnover platform (10).

Disclosed is a wheel front burr cleaning device. The device is composed of a rack (1), a lifting cylinder (2), a support frame (3), guide posts (4), guide sleeves (5), a lifting table (6), a brush (7), bearing seats (8) and the like, wherein a servo motor I (11) is fixed on the side of the rack (1), the output end of the motor is connected with a turnover platform (10) via a coupling (12), the middle part of the turnover platform (10) is a cuboid, circular shafts are arranged on the left side and right side of the turnover platform (10), and the shafts are matched with bearings (9); and the structures above and below the turnover platform (10) are completely consistent, wheel positioning clamping rotating systems are distributed symmetrically, and the servo motor I (11) controls the turnover platform (10) to rotate 180 degrees every time, thereby realizing cyclic switching of the positioning clamping systems above and below the turnover platform (10).

The disclosure relates to a hardbanding removal apparatus and method for use with oilfield tubulars and downhole tools. The apparatus includes a tiltable frame with support arm, a grinding wheel coupled to the support arm, and an idler wheel assembly to supply mechanical feedback to the grinding wheel through the support arm. The mechanical feedback allows the grinding wheel to remove hardbanding accurately and uniformly on tubulars that are eccentric, curved, or have eccentric hardbanding. The tiltable frame enables grinding of tapered sections of the tubular without reorienting the tubular. The method includes removing hardbanding using the apparatus.

A variable radius sanding block for sanding curved surfaces. The variable radius sanding block includes a base member and a plurality of variably sized radius patches. The base member is sized and proportioned to allow radius patches of varying size to be inserted, such that each of the radius patches will change the curvature of the sanding block upon insertion. The base member also having a folded flexible internal structure and a pair of flexible arms that facilitate insertion of radius patches of varying size. The radius patch includes a pair of grooves that receive the flexible arms of the base member and secure the base member to the radius patch.

A variable radius sanding block for sanding curved surfaces. The variable radius sanding block includes a base member and a plurality of variably sized radius patches. The base member is sized and proportioned to allow radius patches of varying size to be inserted, such that each of the radius patches will change the curvature of the sanding block upon insertion. The base member also having a folded flexible internal structure and a pair of flexible arms that facilitate insertion of radius patches of varying size. The radius patch includes a pair of grooves that receive the flexible arms of the base member and secure the base member to the radius patch.

A grinding apparatus has a support frame and first and second carriages horizontally displaceable on the frame. Respective first and second workpiece spindles are each capable of holding and rotating a workpiece and are vertically displaceable on the first and second carriages. Respective first and second grinders on the frame carry respective first and second grinding wheels and are oriented to engage and machine workpieces held and rotated by the workpiece spindles. One of the grinders is movable horizontal or vertically on the frame.

The disclosure relates to a hardbanding removal apparatus and method for use with oilfield tubulars and downhole tools. The apparatus includes a tiltable frame with support arm, a grinding wheel coupled to the support arm, and an idler wheel assembly to supply mechanical feedback to the grinding wheel through the support arm. The mechanical feedback allows the grinding wheel to remove hardbanding accurately and uniformly on tubulars that are eccentric, curved, or have eccentric hardbanding. The tiltable frame enables grinding of tapered sections of the tubular without reorienting the tubular. The method includes removing hardbanding using the apparatus.

Equipment for grinding external rings of roller bearings includes a supporting pin of a bearing to be ground, a stop extending outwardly from the supporting pin for axial positioning of a side of the bearing, a sliding flange on the pin which can be positioned to rest on the other side of the bearing, a clamping nut which can be firmly positioned on a complementary portion of the pin, skids preloaded by springs situated on opposite sides of the bearing, and a guiding element on the opposite side of the stop, which receives a structure carrying a pair of contrast rolls movable to be engaged with the external ring of the bearing creating a radial force thereon, which can be predetermined and regulated by a maneuvering element to eliminate the clearance of the bearing in the radial direction. A machine for housing equipment of the above specified type.

Equipment for grinding external rings of roller bearings includes a supporting pin of a bearing to be ground, a stop extending outwardly from the supporting pin for axial positioning of a side of the bearing, a sliding flange on the pin which can be positioned to rest on the other side of the bearing, a clamping nut which can be firmly positioned on a complementary portion of the pin, skids preloaded by springs situated on opposite sides of the bearing, and a guiding element on the opposite side of the stop, which receives a structure carrying a pair of contrast rolls movable to be engaged with the external ring of the bearing creating a radial force thereon, which can be predetermined and regulated by a maneuvering element to eliminate the clearance of the bearing in the radial direction. A machine for housing equipment of the above specified type.

The disclosure relates to a hardbanding removal apparatus and method for use with oilfield tubulars and downhole tools. The apparatus includes a tiltable frame with support arm, a grinding wheel coupled to the support arm, and an idler wheel assembly to supply mechanical feedback to the grinding wheel through the support arm. The mechanical feedback allows the grinding wheel to remove hardbanding accurately and uniformly on tubulars that are eccentric, curved, or have eccentric hardbanding. The tiltable frame enables grinding of tapered sections of the tubular without reorienting the tubular. The method includes removing hardbanding using the apparatus.