Be based on workbench automatic graduated drilling machine numerical control is changed transform

Of the problem raise the development as industry of domestic car a replacement, the bore tap of poriferous component also increases treatment subsequently. If car, autocycle is poriferous component: Undercarriage of beat of housing of engine casing, aluminous cast, apply the brake, Buddhist templeput on the brakes, steering gear, hub, poor bridge of head of fast carapace, axis, axle shaft, car, pump kind, a powerful person kind, fittings of hydraulic pressure component, solar energy, etc. This kind of workpiece often asks to machine precision tall, work efficiency is fast. And the poriferous part that machines this kind of spare parts before, it is forefathers normally labour is underlined or design an appropriative jig, go up in drilling machine again bore. Method of this kind of treatment works not only intensity big, efficiency is low, and treatment precision is poor, often appear pitch out of tolerance and cause workpiece to discard as useless with do poorly done work over again. The numerical control drilling machine with accordingly high rate of applied high accuracy, automation is imperative already.

For managing investment capital, reduce finished cost, plan to undertake counting accusing to change transforming to having bench drill. With implementing pair of plans 1 shows a part of poriferous part get automatically cut treatment to be exemple. Before transforming, need is taken artificially put workpiece, jig to undertake clamp, a person can operate bed of 1 bench drill only, manufacture efficiency not only big and intensity of low, labor is insecure; After transforming, need to take knock off artificially only, other working procedure is finished automatically entirely, 1 person can be operated 3 -- bed of 5 bench drill, manufacturing efficiency rises multiple, labor intensity also is reduced greatly, and the product machines precision consistency of tall, parameter is good. Graph 1 part drawing 　 2.

Numerical control is changed transform plan to pursue graph of principle of work of system of 2 numerical control is a foundation with original drilling machine, hold main construction basic and changeless, design controallable main shaft is automatic feed and workbench are automatic graduated system, if pursue,2 are shown. Specific plan is as follows: 1) maintain original drilling machine basic structure is changeless. Withhold original drilling machine advocate transmission catenary, workbench, one is installed on former workbench by pilot of numerical control system automatic graduation device. 2) the handle that moves feed of control drilling machine is torn open, the pace is added to enter electric machinery on the main shaft of drilling machine, the pace passes deputy clench the teeth of worm wheel worm into electric machinery, came true to main shaft is down feed or be exited up thereby, after treatment is finished, by numerical control system control returns initial drop. 3) cost of the each other check that receives electric machinery for pace of convenient drilling machine, maintenance after reducing carry out, the situation that the drilling machine place after transforming chooses is same type as far as possible into electric machinery. 4) of numerical control system choose. Considering the simple and easy sex of economy and operation, use off-the-peg vast number system to realize bit of position control. 2.

1 machinery transforms 　 half 1) main shaft (Z axis) automatic feed. Considering advocate transmission system is fixed, the rotate speed of the feed according to bench drill main shaft and main shaft does not need to match strictly when bore is machined, and the control of speed of feed of main shaft of old young general that needs the aperture that machines according to place only is inside a likely range can characteristic, designed two kinds of main shaft (Z axis) automatic feed implements plan: The first kind chooses ball silk lever deputy; The 2nd kind is to be in what main shaft operates lever so to install worm wheel, shaft coupling and pace to enter electric machinery locally, add again install one worm, make its and worm wheel form kinematic pair. These two kinds of plan can turn into whirligig to move point-blank, also can have decelerate effect. But because equipment of this table drilling machine is old old, so ball silk lever deputy although be on the precision that pass motion and efficiency more deputy than worm wheel worm want tall, but when be being installed, its structure wants than latter complex much. Reason considers equipment itself integratedly the actual, requirement that machines a spare parts and economy, choose the 2nd kind of plan finally to realize main shaft (Z axis) automatic feed. 2) the automatic graduation device of workbench. In the installation on the workbench with original bench drill one the gait o fan actor or actress in Beijing opera enters electric machinery, the pace rotates into electric machinery the clamp device that drives according to product volume design, in order to achieve automatic graduated the effect. 2.

Part of system of 2 numerical control uses the 928TE of vast number system with existing commonly used market, valence compares this systematization tall. Draw lessons from machining center to match the principle of one runner shaft coming back, set main shaft for Z axis, it is the set of automatic graduation device of workbench X axis. Two driver of system of vast number of have the aid of, among them the roll that a driving unit controls a pace to enter electric machinery, drive deputy drive of worm wheel worm to realize the feed of drilling machine main shaft thereby; Another driving unit controls the pace on workbench to eat the roll of electric machinery, drive clamp device to realize automatic graduation thereby. After transforming, the hand of the machine tool moved feed to become automatic feed. When bore, the automatic feed of main shaft can be given through numerical control system. The distributinging amount that can process spare parts aperture according to need undertakes process designing in numerical control system, make drilling machine can process a different amount all the aperture of cloth is. 2.

3 paces enter electric machinery into the choice pace of electric machinery is a kind of actuator that changes electric pulse into angular displacement. Receive signal of a pulse into driver when the pace, the direction that presses set into electric machinery with respect to drive pace rotates a fixed angle (call step pitch part) , with fixed angle one pace runs the whirl that the pace enters electric machinery. Can pass control pulse number will control angular displacement amount, achieve the goal of exact location thereby; Can control the speed that electric machinery rotates and acceleration at the same time through controlling pulse frequency, achieve the goal of timing thereby. The pace is compared into electric machinery structure and function simple, malfunction not easily. This second transforming is a basis the biggest static turn be apart from and the choice that top job frequency has electric machinery. Through computation affirmatory transmission system uses 110BYG3502 pace to enter electric machinery, its are main technical parameter is: B=0 of θ of step pitch horn.

6 ° ; The biggest static turn be apart from M of Tm=12 N · ; Photograph number is 3; Voltage is 30 -- 300 V; Electric current is 3.

4A. The each other check that receives electric machinery considering pace of convenient machine tool and cost of the maintenance after reducing carry out, the situation that automatic graduation place chooses workbench also is same type into electric machinery. 3.

Numerical control of table drilling machine changes transformed actor defect 　 1) cost is low, periodic fast. Because there is off-the-peg supply of goods on market of a lot of spare parts, because this purchases new drilling machine together,photograph comparing can save 70% right-and-left cost, and manufacturer can be finished by oneself transform. 2) facilitate master operation and maintenance. Because be to be transformed by oneself, handlers reachs other function know sth like the palm of one's hand to transforming the process capability of the drilling machine after, be used in the operation and maintain a respect to get effective fast. 3) mechanical function stability is relative poorer. Be restricted as a result of what accept structure of machinery of original drilling machine and should not be do transform revolutionarily, the stability of function of drilling machine machinery after transforming is relative poorer. 4.

This design transforms epilogue cycle weak point, fare is low, the drilling machine operation after transforming, use convenient. The machine tool increased the function of automatic feed, handlers can apply vast number system to machine a diameter to differring, distributing different aperture department spare parts undertakes process designing is machined. Rate of machine tool automation is high, get used to the change that machines a spare parts quickly, not tall also to technical level requirement of the worker, the drilling machine of particularly well small and medium sized business is transformed. the company that this numerical control turns the treatment craft range that transforms managing to wanting capital to want to enlarge a machine tool again, can yet be regarded as a feasible plan. Origin: Author of institute of technology of profession of Mei continent bay: Duckweed of short for Weihe River of Guo of Ming Xiong of Chen Wei Cai CNC Milling