Patent GB-947986-A (GB)
Title: Improvements in or relating to the sawing of timber
IPC: B23Q11/10
Filed: 1962-07-25
Abstract: 947,986. Sawing. A. J. GOLICK. July 25, 1962 [July 27, 1961], No. 28672/62. Heading B5L. A method of sawing wood and like material comprises using a rotary saw to make a smooth kerf less than 0.060 inch wide at high speed, and lubricating, cooling and cleaning the kerfforming surfaces of the saw by continuously substantially uniformly distributing thereover an atomized mist of lubricant. The wood L, Fig. 1, is fed over a table T and a gang saw assembly GS which cuts the wood into strips by infeed and outfeed rollers IR, OR vertically adjustable by a handle W and driven from a motor; the outfeed rollers may be of larger diameter than the infeed rollers to apply a tension force to the wood as it is cut. The motor also drives a compressor C and a pump LP connected to a reservoir LT of lubricant, the compressor and pump both being connected to a lubricant atomizer adjacent the gang-saw assembly. The gang-saw assembly has a plurality of thin circular saws 32, Fig. 3, which may be between 0.025 inch and 0.050 inch thick with a set varying from zero to 0.010 inch, separated by spacers 34, the saws and spacers being mounted between an end flange 50 and a flange 60 and nut 62 on a tubular hub member 52 engaged by conical collars 46, 48 between a flange 38 and washer 42 and nut 44 on a tubular mandrel 20 driven at approximately 20,000 r.p.m. by a high speed motor. Each face of each spacer is formed with channels 82, Fig. 4, joined to annular recesses 80. Slots 78 in the tubular member 52 connect the recesses to an annular space 76 between the member and mandrel 20 which has slots 74 connecting the space 76 to its hollow interior 70. The lubricant atomizer LA is disposed at the end of the mandrel so that lubricant from the pipe LL atomized by air from the pipe AL passes into the mandrel and through the slots and spaces to the channels 82 so as to lubricate, cool and clean the saws. In another embodiment, the mandrel 20<SP>1</SP>, Fig. 13, is solid and the atomized lubricant is supplied to the space 150 between the mandrel and tubular member from a spider 154 connected by passages 148 to the space 150 and by a connection 160, 162 to a pipe 164 supplied with the atomized lubricant. In a similar embodiment, the passages 148 are supplied with atomized lubricant from a ring which is mounted on the flange 142 and rotates within an annular manifold chamber. In a further embodiment, the tubular member 172, Fig. 15, is mounted on a thread 170 at the end of the mandrel 20<SP>11</SP> and the other end of the member has a wear-resistant ring 174 adjacent an end 184 from which atomized lubricant is delivered. The outfeed rollers OR may have flanges which engage in the kerfs formed by the saws to aid guiding the cut strips and the table T may have fingers extending between the saws to support the wood. The saw assembly is adjustable vertically and horizontally relative to the table by screws 118, 122, Fig. 10, which move a support 114 carrying the mandrel 20 relative to the frame 106 of the machine. In an alternative arrangement, the atomized lubricant is directed at the saw surfaces by a stationary bank of self-atomizing nozzles.