86
" Broaching is a precise machining process in metalworking domain which uses a toothed tool called broach to cut materials into a predetermined shape. Broaching works best for odd shapes where precision machining is needed and hence finds wide application in a number of industry in India and worldwide.
Broach resembles a saw to certain extent but unlike a saw, its teeth become larger in size across its length. A broach gives shapes by roughing or removing the material, semi finishing and then by imparting the ultimate finishing. Round or odd shapes, for both internal and external surfaces, can be conveniently formed by broaching. This multi edge tool can shape any metal or metallic alloy but works best on softer materials like plastic, wood, bronze, aluminum, etc.
Resharpening of the tool
The broach that imparts shape to many work pieces can work properly only when the size and shape of its teeth are perfect. With time and usage, the teeth tend to lose its sharpness and become blunt. Using a dull broach may lead to permanent damage of its teeth. To enhance the broach life and minimize the tooling expense, it needs to be re-sharpened on time.
When to opt for resharpening
When broaching produce roughly shaped work pieces, it is definitely time for re-sharpening. However, with a little bit of watchfulness, one can even get it sharpened before it delivers poor finish or tearing. Some of the other conditions when this toothed tool will require re-sharpening are:
• Excessive hydraulic press pressure required to run the broach
• Nicks and scratches on the teeth making it dull
• Broach starts drifting
• Cutting edges show signs of wear
• Chattering occurs while broaching
Re-sharpening requires high precision. Removing excessive material from the teeth will adversely affect its longevity. Only proper sharpening will ensure time efficiency and high quality output. Teeth welding, grinding of gullets and teeth crest, reshaping teeth to proper taper are some of the methods used in re-sharpening.
Broaching, once used for machining only internal keyways, is now used for machining a plethora of shapes and surfaces for high quantity of work pieces. Broaching requires less tools than most of the other machining process and saves considerable amount of output time and hence favoured for high volume production irrespective of its high cost. In India, broaching finds wide application in the automobile industry. Therefore, a large number of players are foraying into the broach manufacturing industry on a regular basis. "
― Ankur sood
91
" On the morning of November 22nd, a Friday, it became clear the gap between living and dying was closing. Realizing that Aldous [Huxley] might not survive the day, Laura [Huxley's wife] sent a telegram to his son, Matthew, urging him to come at once. At ten in the morning, an almost inaudible Aldous asked for paper and scribbled " If I go" and then some directions about his will. It was his first admission that he might die ...Around noon he asked for a pad of paper and scribbledLSD-try itintermuscular100mmIn a letter circulated to Aldous's friends, Laura Huxley described what followed: 'You know very well the uneasiness in the medical mind about this drug. But no 'authority', not even an army of authorities, could have stopped me then. I went into Aldous's room with the vial of LSD and prepared a syringe. The doctor asked me if I wanted him to give the shot- maybe because he saw that my hands were trembling. His asking me that made me conscious of my hands, and I said, 'No, I must do this.'An hour later she gave Huxley a second 100mm. Then she began to talk, bending close to his ear, whispering, 'light and free you let go, darling; forward and up. You are going forward and up; you are going toward the light. Willingly and consciously you are going, willingly and consciously, and you are doing this beautifully — you are going toward the light — you are going toward a greater love … You are going toward Maria's [Huxley's first wife, who had died many years earlier] love with my love. You are going toward a greater love than you have ever known. You are going toward the best, the greatest love, and it is easy, it is so easy, and you are doing it so beautifully.'All struggle ceased. The breathing became slower and slower and slower until, 'like a piece of music just finishing so gently in sempre piu piano, dolcamente,' at twenty past five in the afternoon, Aldous Huxley died. "
