Lathe changes plan of deep aperture boring machine to discuss

The basic structure of the machine tool and compositive component add corresponding part on lathe foundation, so that achieve,bore hole, reaming and roll the end that approach. When treatment, the work that is processed rotates, cutting tool finishs feed, tail end of lever of boring of classics of fluid of the cutting when boring hole (rear of main shaft of drill pipe box) enter the hole inside boring lever, reach area of cutting tool cutting, area of lubricant, cooling cutting, wrap belt cut bits to be carried in the head of a bed of workpiece flow into the box that cut bits via discharging bits to fight. When thick boring, IT8 of bore diameter precision - 10, exterior surface roughness is worth Ra ＝ 3.

2 ～ 6.

3 μ M. When boring of essence of life, IT7 of bore diameter precision - 9, exterior surface roughness is worth Ra ＝ 1.

6 ～ 3.

2 μ M. The main component of the machine tool is as follows: (1) bed body part. Use system of bed of former CW61125 lathe, back end can accept long bed put oneself in another's position, slideway face intermediate frequency quenchs, whole is connected grind. (2) headstock part. Use headstock of former CW61125 lathe, gear, bearing is overhauled, change additional plan. (3) boring head bracket. Use two below half made of baked clay structure, through supporting a staff of the boring that prop up, in front have pushbutton board and appearance, included the control button of all motion of the machine tool almost, accordingly, boring head bracket also is the operation center of the machine tool. Sudden fit drives motor-driven feed of around of body of bed of edge of boring head bracket. If the graph is shown 1 times,assemble sketch map for boring cutter lever. Arbor makes up two adjustable boring cutter, the boring cutter in the graph 4 use at the aperture thick boring that attends work, boring cutter of essence of life 5 use at the aperture essence boring that attends work, make sure workpiece primary feed can have thick, fine treatment. When treatment, main shaft drives boring cutter roll, workpiece is transverse and fixed do not happen fluctuant, by lathe splint edge vertical towards the left moves, the aperture inside the workpiece that finish thick, finish machining. After finishing, the edge is fore-and-aft retreat a knife right. Graph lever of 1 boring cutter assembles sketch map 　 (4) procrastinate board part. Boring lever is fixed frame fixed procrastinating board on, it is the kind that covers through locking and boring lever connection. When feed, feed box sends a motive force in order to drive guide screw, make guide screw begins to rotate, gyral guide screw makes axial of edge of the nut on bar moves, the nut with mobile axial is driven procrastinate board, achieve procrastinate board the purpose of feed. Should procrastinate board when rapid movement, procrastinate board the worm wheel of fast electromotor drive from the back pays, drive nut to rotate, drive procrastinate board sudden shift. When the hand is moved, the push rod that introduces to handwheel center makes clench the teeth of gear of 17mm of two M2 × , turn handwheel drive worm wheel pays, drive nut to rotate, make procrastinate board make axial shift. The hand is moved and rapid movement has lock of micro-gap switch each other. (5) the bracket of boring cutter lever. The bracket cent of boring cutter lever is the structure that fluctuation covers with tiles twice partly, such purpose depended on going to the lavatory of boring cutter lever update and replace. The action of bracket of boring cutter lever depends on assisting bearing boring lever. To long and thin boring lever, need to increase bracket amount appropriately, it moves along lathe bed slideway is to rely on to procrastinate board drive, also can move device to drive through the hand. The feed of boring cutter comes true through bracket, in lathe bed intermediate place is installing feed guide screw, guide screw is become by knaggy combination, two end come by bracket bearing, contain before lathe bed rack, move the gear clench the teeth of device with the hand, for shift central wearing and boring lever bracket are used (see a picture 2) . Graph sketch map of device of feed of 2 boring cutter 1.

Boring cutter is combined 2.

Pipe fitting 3.

Shou oily tie-in 4.

Boring lever 5.

Boring lever bearing support 6.

Boring lever secures bracket 7.

Filar mother box 8.

Clutch 9.

Decelerate machine 10.

Electromotor 　 (6) feed system. Feed box installs the tail end in lathe bed, installation of feed guide screw is inside the groove between slideway. By drive of communication servo electromotor, guide screw is attainable 0.

The stepless speed regulation of 5 ～ 60r/min, procrastinate board the rate that gets 5 ～ 600mm/min. (7) bracket of central wearing, workpiece. Use former lathe bracket of central wearing, workpiece. (8) cutting fluid supplies a system. Cutting fluid supplies a system to be at the back of the machine tool, main component has gasoline tank, petroleum pipeline, store bits box and pumping station. The main effect of cutting fluid has at 2 o'clock, the a bitth action that is refrigeration, 2 o'clock is cleared the platoon that cut bits is gone to store bits box and gasoline tank. The hydraulic pressure of cooling system is taking composition of pump of a gear by an electromotor, can provide the flow of 300L/min, have refrigeration to filter function. (9) platoon bits is fought. Increase appropriative to discharge bits to fight, but cut bits and cutting fluid to emit into the box that cut bits automatically inside, prevent cutting fluid splatter. (10) the control system of electric part. Basically ark of electric control system, electric control and actuating device wait. 2.

The 　 of basic technology parameter of the machine tool (1) bore hole the biggest diameter: 500mm; Centre height (reach main shaft center from smooth slideway) : With primary machine tool; Length of workpiece of the biggest treatment: 4 000 ㎜; Advocate electromotor power: As identical as former lathe; Feed electromotor power: 5kW; Progression of machine tool main shaft, rotate speed: As identical as former lathe; Procrastinate board electromotor: 5kW, N=2 880r/min; Feed speed limits: 0 ～ 600mm/min; Procrastinate board fast and floating rate: 2.

8m/min; Cooling pump motor: 5kW, N=960r/min; Cooling system is rated pressure: 0.

36MPa; Cooling system flow rate: 200L/min. (2) when thick boring, bore diameter precision: IT8-10, exterior surface roughness is worth: Ra=3.

2 ～ 6.

M of 3 μ ; When boring of essence of life, bore diameter precision: IT7 - 9, exterior surface roughness is worth: Ra=1.

6 ～ 3.

2 μ M. (3) feed speed: Affirmatory according to the particular case of treatment, be in commonly 10 ～ 60mm/min; Cutting speed: The structure that is design of the hardness according to material, cutting tool commonly and be pledged decide by the material of treatment workpiece, be in commonly 60 ～ 90m/min. If the graph is shown 3 times,machine the spot. Graph 　 of 3 treatment spot 3.

This equipment passes epilogue after changing one's costume or dress go easily more simply, do not need to invest too much capital, use original common device, make original equipment is used again through digging potential, enlarged the scope of application of lathe, raised the utilization rate of the machine tool, make produced efficiency to get consequently greatly rise, also reduced the mechanical labor intensity that produces a worker at the same time, reduced manufacturing cost, very good treatment effect and good economic benefits arose when applying actually. Origin: Transmission of the northward group that weigh labour divides fair author: Liyan autumn Zhang Ying CNC Milling CNC Machining