36results about How to "Avoid Grinding Burns" patented technology

The invention discloses a manufacturing method of an electroplated grinding wheel of an ordered structure. The method includes: adopting a pulse laser beam to process a fine spiral groove with the pitch of hundreds of micrometers and the notch size of dozens of micrometers in the working surface of the outer annulus of a grinding wheel base body made of metal, filling the groove with epoxy resin, and enabling the metal and the epoxy resin on the working surface of the outer annulus of the grinding wheel base body to be in spiral regularly-spaced layout; then electroplating the working surface of the outer annulus of the grinding wheel base body with abrasive grains by adopting an electroplating method. Since the groove is filled with the non-conductive epoxy resin, the region cannot be electroplated with the abrasive grains. By the steps, the electroplated grinding wheel with the abrasive grain layer and the epoxy resin being in spiral regularly-spaced layout can be obtained. The manufactured electroplated grinding wheel of the ordered structure is in favor of solving the problems that the grinding wheel is blocked easily during grinding and grinding fluid cannot enter the grinding region easily, workpieces can be prevented from being burnt, and the grinding quality is improved.

The invention discloses an internal cooling grinding wheel. A grinding wheel body is of a bowl-shaped structure, a cutter handle is arranged on the grinding wheel body, grinding particles are distributed below the cavity wall of the grinding wheel body evenly, a cooling liquid cavity is formed in the cutter handle end of the grinding wheel body and sealed by a round plate, and a cooling liquid injection hole is formed in the round plate. A center through hole is formed in the cutter handle and through the center cavity of the grinding wheel body. Cooling liquid channels are distributed in the cavity wall of the grinding wheel body evenly, inlets of the cooling liquid channels are positioned in the cooling liquid cavity of the grinding wheel body, and jet ports of the cooling liquid channels are positioned between two adjacent grinding particles. The internal cooling grinding wheel has the advantages that by means of a supercharging device, cooling liquid is injected through the injection hole and jetted out through the positions between two adjacent grinding particles by means of pressure, gravity and centrifugal force during rotation of the grinding wheel, the temperature of grinding regions is decreased remarkably, grinding burn is avoided, full cooling is achieved, and therefore, the internal cooling grinding wheel is a practical and efficient grinding tool.

The invention discloses a manufacturing method of a slewing bearing, belongs to the field of production of slewing bearings, and solves the problems of short service life, weaker quality stability and low machining production efficiency of the traditional slewing bearings. The manufacturing method of the slewing bearing comprises a rough machining step, a lineation step, a hole boring step, a semi-finish turning step, a tempering step, a finish machining step, a roller way finish machining step and an assembly step, wherein the tempering step of the inner surface of a roller way is to use a nozzle for aligning to the inner surface of the roller way to spray quenching liquid and immediately stop spraying when rotating by 360-n degrees, and the roller way finish machining step is to grind the inner surface of the roller way by adopting turning to replace grinding. The manufacturing method of the slewing bearing can effectively improve the production efficiency, and manufactures the slewing bearings with stable quality, high precision and long service life.

The invention relates to a magnetic nanoparticle jet flow and magnetic force working table coupling oil film forming process and a magnetic nanoparticle jet flow and magnetic force working table coupling oil film forming device. The magnetic nanoparticle jet flow and magnetic force working table coupling oil film forming device includes a magnetic force working table onto which a work piece is attached; a grinding wheel is arranged on the processing position of the work piece, a nozzle is arranged on the position of the grinding wheel cover, and the position of the grinding wheel cover is matched with the work piece; the nozzle is connected with a magnetic nanofluid liquid supply device through a magnetic nanofluid delivery pipe, and connected with an air compressor through an air compressor delivery pipe; the magnetic nanofluid and compressed air formed into a three-phase flow spray after being mixed and accelerated in the nozzle, wherein the three-phase flow spray is a mixed spray of the compressed air, the magnetic nanoparticles and grinding-fluid-based oil particles; and the three-phase flow spray enters the grinding area between the work piece and the grinding wheel, the magnetic force working table is in magnetic coupling with the three-phase flow spray, and an oil film is formed on the surface of the work piece. The magnetic nanoparticle jet flow and magnetic force working table coupling oil film forming device delivers the magnetic nanoparticle fluid to the nozzle and forms a lubricating oil film on the surface of the work piece of the magnetic worktable, so that the maximum cooling and lubricating of a grinding processing area is achieved.

The invention discloses a combined type axial rotating pulsating heat pipe grinding wheel. The combined type axial rotating pulsating heat pipe grinding wheel is composed of a handle body and a plurality of grinding wheel section blocks capable of being fixed to the handle body in a combination mode; working layers with abrasive particles are arranged on the outer surfaces of the lower ends of thegrinding wheel section blocks, heat exchange fins are arranged on the upper parts of the grinding wheel section blocks, and closed single loop pulsating heat pipe flow channels are arranged in the grinding wheel section blocks; vacuumizing liquid injecting holes are formed in the single loop pulsating heat pipe flow channels, plug heads are sealed on the vacuumizing liquid injecting holes and canbe moved away from the vacuumizing liquid injecting holes, and thus the single loop pulsating heat pipe flow channels are connected with a vacuumizing device or a liquid injecting device through thevacuumizing liquid injecting holes; and the vacuumizing device can vacuumize the single loop pulsating heat pipe flow channels, and the liquid injecting device can inject preset working mediums into the single loop pulsating heat pipe flow channels. The combined type axial rotating pulsating heat pipe grinding wheel has the advantages of efficiently strengthening and channeling the grinding heat generated by grinding arc areas, reducing the grinding temperature and improving the grinding quality.

The invention relates to a softening method of a carburizing area obtained after CSS-42L gear steel is carburized. After high-temperature austenitizing, oil quenching and stress removal treatment are performed, the Ms point of a carburized layer tissue is made to be greatly lowered, hardness of a material may be lowered to be HRC 28-35, and gear shaping, and gear hobbing or finish turning machining can be performed. After the material is softened, a grinding process can be replaced, grinding burn is effectively avoided, and production efficiency is improved.

The invention provides a non-API thread ring gauge electroplating super-hard abrasive molded grinding wheel matrix structure design method. According to the non-API thread ring gauge electroplating super-hard abrasive molded grinding wheel matrix structure design method, a super-hard abrasive molded grinding wheel and a grinding machining method are aimed at a non-API thread ring gauge part; by adoption of the super-hard abrasive molded grinding wheel and the optimized form-grinding machining method, the phenomenon of non-API thread ring gauge grinding burn can be avoided; the super-hard abrasive molded grinding wheel structure design comprises the grinding wheel matrix structure design and the grinding wheel work profile structure design; the super-hard abrasive molded grinding wheel matrix structure design comprises the grinding wheel matrix outline structure design, the grinding wheel groove factor design, the grinding wheel intermittent period design and the sand grooving parameter design; the grinding wheel intermittent period design is equivalent to the groove quantity design; and the super-hard abrasive molded grinding wheel work profile structure design comprises the grinding wheel tooth structure design and the corner critical position structure design. By combination of optimized super-hard abrasive grinding wheel form-grinding machining parameters, the problem about grinding burn in a non-API thread ring gauge rough grinding machining can be solved and the efficient grinding machining demand can be met.

A gear tooth surface processing device and a gear manufacturing method are provided which are capable of adjusting processing pressure for the purpose of improving the surface roughness of high-hardness gears and the like. The gear tooth processing device (10) has: a helical grindstone (2); a position adjusting means (3) which is capable of moving the relative positions of a rotary axis (C) of the helical grindstone (2) and a rotary axis (X) of a gear to be processed (W); and a control means (7). The control means (7) includes: a position control unit (71) which operates the position adjusting means (3) so as to adjust the relative positions of the rotary axis (C) of the helical grindstone (2) and the rotary axis (X) of the gear to be processed (W) to cause only one of the tooth surfaces to be processed (11), from among the gear tooth surfaces that form a single tooth of the gear to be processed (W), to make contact with a grindstone tooth surface (21) of the helical grindstone (2) such that the helical grindstone (2) and the gear to be processed (W) are engaged; a grindstone rotation means control unit (72) for operating a grindstone rotation means (4); and a torque control means control unit (73) for operating a rotation torque control means (5) so as to adjust the rotation torque within a predetermined range.

The invention discloses a solidified metal bonding agent grinding wheel with inner flow passage structures, a device and a preparation technique. The solidified metal bonding agent grinding wheel withthe inner flow passage structures comprises a grinding wheel base body and a grinding wheel grinding main body. The grinding wheel grinding main body is arranged on the outer side of the grinding wheel base body and provided with the inner flow passage structures. According to the solidified metal bonding agent grinding wheel with the inner flow passage structures, the inner flow passage structures are arranged on the grinding wheel grinding main body, accordingly, the cooling capacity of the grinding wheel can be improved, the heat exchange efficiency is improved, and a grinding workpiece isprevented from being burned.

The invention relates to a vibrated grinding process method for materials difficult to machine. The method specifically includes the steps of (1) determining the demanded movement distance of a grinding heat source as specific grinding length when critical burn grinding temperature is achieved or almost achieved during grinding; (2) using a slow-insertion deep-cutting grinding process for grindingwithin the range of the specific grinding length; (3) within the range of the specific grinding length, adopting a fast reciprocating grinding process for making a grinding wheel carry out grinding motion back and forth, adopting the slow-insertion deep-cutting grinding process again for grinding within the range of the specific grinding length when the grinding wheel comes back to an unmachinedsurface, and repeating the steps above to form a vibrated grinding process, wherein the adopted grinding depth of the fast reciprocating grinding process is equal to that of the slow-insertion deep-cutting grinding process. According to the grinding method, on the premise of ensuring the grinding efficiency, the quality of ground surfaces is significantly improved, and the method can be applied toefficient grinding of nickel-based superalloys, titanium alloys and other materials difficult to machine.