Curve abrasive band grinding and cutting flexible grinding wheel
Technical field
The present invention relates to a kind of curve abrasive band grinding and cutting flexible grinding wheel or curve flexibility polishing wheel, specifically be applicable to blade polishing processing, and have other complex-curved part processing occasions, as the processing of curved surface punch, body of a motor car, marble section bar, glass, porcelain, woodenware, articles made of bamboo etc., belong to the process equipment field of metal, nonmetallic surface grinding, polishing.
Background technology
The higher curved surface part of required precision often requires to carry out rubbing down processing.Adopting sbrasive belt grinding is the manufacturing process of using always.The abrasive band is a kind of grinding tool of individual layer abrasive material, on the flexible substrate that scribbles adhesives such as primer, compound adhesive, even-grained abrasive material is made it proper alignment by relevant apparatus such as electrostatic fields.Similar to emery wheel, the abrasive band is special multitool multiple cut instrument.Sbrasive belt grinding is according to the shape of workpiece and size, and the abrasive band that with the corresponding way of contact high-speed motion in the abrasive band contacts with surface of the work carries out grinding-polishing.For the abrasive band curve surface grinding, especially need to make flexible abrasive band well to contact, and guarantee certain contact force with surface of the work.
In the prior art, following processing mode is normally adopted in sbrasive belt grinding:
1, the imitative molding sand band grinding machine of direct copy formula is traditional production line Special Purpose Machine for Processing.But because versatility is poor, floor space is big, is subjected to multifactorial influences such as pattern precision, machine driving, causes the machining accuracy instability, and the uniformity of crudy is poor.2, German Metabo company is the producer of unique in the world production numerical control multi-shaft linkage abrasive belt grinding machine, produces 76 interlocked numerical controlled abrasive belt grinding machines.Its product precision height costs an arm and a leg, and uses complicated.3, the smart machine of Japanese matsuda Co., Ltd. has released manual abrasive band polishing and grinding machine at the beginning of the nineties in last century, abrasive band with workman's offhand contact emery wheel place, change into and hold the emery wheel handle and come the rubbing down workpiece, this has reduced the labour intensity of workman when the big blade of processing undoubtedly, but crudy and condition of work there is no obvious improvement.4,4 axis linkage numerical control abrasive band polishing and grinding machines of Sichuan Chengfa Aero Science ﹠ Technology Co., Ltd. exploitation are to be simplified to 4 axis linkage numerical control abrasive belt grinding machines on 76 interlock abrasive belt grinding machine bases of German Metabo company.It is with low cost, and is easy to use, but because 4 interlocks still are not enough to guarantee the processing request of moulding curved surface, the curved surface big for curvature will produce interference, can't guarantee on the principle that flexible abrasive band well contacts with surface of the work that is:.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of curve abrasive band grinding and cutting flexible grinding wheel, claim flexible contact wheel again, can make flexible abrasive band and surface of the work keep well contacting, and guarantee certain contact force can reduce equipment cost, avoid curved surface to interfere, improve crudy and production efficiency, improve working conditions.
Main solution of the present invention is achieved in that
The present invention mainly adopts pinch roller is housed in support, and flexible rim is sleeved in the groove of pinch roller, and fixes with the pinch roller side cover of clearance-adjustable; Left and right sides bearing is housed in the hole of pinch roller, big spacer is installed in the pinch roller, dome is fixed on the pinch roller, bearing pin is installed in the inner ring of left and right sides bearing, the outside of left and right sides bearing inner race is respectively equipped with little spacer, and the outside of little spacer withstands on the support inboard, nut from about bearing inner race is clamped.
The left side in described pinch roller hole is provided with step surface.
The outline of described flexible rim is provided with netted groove.
Described flexible rim can be made hollow or solid, and described flexible rim inside charges into gas or liquid, and gas inside pressure or liquid volume can be regulated.
Described flexible rim adopts elastomeric material to make.
Be provided with flexible braiding cord fabric thread in the described flexible rim wall.
Described flexible rim surface is stained with the polishing abrasive particle, can not need the abrasive band, directly uses as the flexible polishing wheel.
Compared with the prior art the present invention has the following advantages:
1, the present invention can adapt to the contact adjustment capability of curve surface of workpiece shape, avoids interfering; The contact-making surface shape adjustments of emery wheel is by being sleeved on the flexible rim on emery wheel surface, coming the self adaptation adjustment.2, for the shape that adapts to processing object and the requirement of abrasive band size, the original section shape and size of flexible rim can change various, and the diameter of flexible rim and width also can change.3, during the abrasive band curve surface grinding, flexible grinding wheel makes flexible abrasive band well contact with surface of the work, and guarantee certain contact force, especially the number of axle that is suitable for linking is lower than 6 multiaxis abrasive band curve surface rubbing down lathe, and can reduce equipment cost, avoid curved surface to interfere, improve crudy and production efficiency, improve working conditions.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the work schematic diagram of flexible grinding wheel of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention mainly is made up of flexible rim 1, support 2, pinch roller 3, dome 4, left and right sides bearing 5, bearing pin 6, septulum cover 7, big spacer 8, adjustment circle 9, pinch roller side cover 10, abrasive band 11 and workpiece 12 etc.
As shown in Figure 1: pinch roller 3 is housed in support 2, and flexible rim 1 is sleeved in the groove of pinch roller 3, and fixing with pinch roller side cover 10.Gap between pinch roller 3 and the pinch roller side cover 10 can be adjusted with adjusting circle 9.According to shape, the material of processing object, can in flexible rim, charge into gas or liquid, gas pressure or liquid volume can be regulated; Perhaps flexible rim 1 itself is made solidly, whole is made of the flexible elastomeric material of difference.In order to improve the bearing capacity of flexible rim 1, in flexible rim 1 wall, be provided with flexible braiding cord fabric thread.
Two bearings 5 about in the hole of pinch roller 3, being equipped with, the left side in pinch roller 3 holes is step surfaces, and big spacer 8 is installed in pinch roller 3 holes, the outer ring of left and right sides two bearings 5 is by the length adjustment of middle big spacer 8.The right side in pinch roller 3 holes leans on dome 4 to compress the outer ring and the pinch roller side cover 10 of bearing 5, and dome 4 is fixed on the pinch roller 3 by screw; Bearing pin 6 is installed in the inner ring of left and right sides two bearings 5, and the outside of left and right sides bearing 5 inner rings is respectively equipped with septulum cover 7, and the outside of septulum cover 7 withstands on support 2 inboards, nut from about bearing 5 inner rings are clamped.Flexible abrasive band 11 snugly is pressed on the workpiece 12 by flexible rim 1, and move in abrasive band 11, flexible rim 1 and pinch roller 3 rotations.
As shown in Figure 2: the principle of the 4/5 axis linkage numerical control abrasive band polishing and grinding machine that the present invention adopts.
4/5 axis linkage numerical control system of abrasive band polishing and grinding machine is meant that equipment can realize the rotation of moving of three of x, y, z and A axle simultaneously, finishes the coordinated movement of various economic factors of four frees degree; Or realize moving and the rotation of A, C diaxon of three of x, y, z simultaneously, finish the coordinated movement of various economic factors of five frees degree.Workpiece is contained on the A axle rotary clamp, and promptly workpiece can rotate around the x direction of principal axis.In 4 linked systems, abrasive band mechanism can turn an angle to adjust and fix around the C axle.Emery wheel makes the abrasive band contact with surface of the work, and move under the guiding of emery wheel outline in the abrasive band.
During the abrasive band curve surface grinding, adopt the operation principle of 54 interlocks or 55 interlocked numerical controlled abrasive band polishing and grinding machines.4 axis linkage numerical control workbench are meant that workbench can realize the rotation of moving of three of x, y, z and A axle simultaneously, finish the coordinated movement of various economic factors of these four frees degree; The 5th motion is manually to adjust separately or rotate with preceding four-axle linked C axle.The flexible grinding wheel of abrasive band curve surface grinding makes flexible abrasive band well contact with surface of the work, and guarantees certain contact force.
Be to guarantee crudy, according to the feature of curved surface, the present invention adopts following processing method: 1, adopt manual adjustments or with other four-axle linked method, comprise the whole abrasive band drive system of flexible grinding wheel around the rotation of C axle; 2, regulate flexible rim gas inside pressure or liquid volume, or change different flexible solid flexible rim; 3, change the flexible rim of different original sections; 4, change the flexible rim of different in width; 5, change the flexible rim of different-diameter; 6, the flexible rim surface of emery wheel is stained with polishing material, can directly take turns as flexible polishing.