Should curve the influence that is versed in to Kong Jia to providing material

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The influence that tubal material curves to be versed in to Kong Jia of perforation gun blind processes the tubal material of perforation gun, internally large demand of aperture and wall is higher, at the same time linearity also has very high demand. If be in charge of material to bend, the treatment to blind aperture deepness causes very big effect. What at present aperture of blind of treatment perforation gun uses is numerical control special device, after workpiece installs card to finish, do not need artificial interpose, undertake automatically machining by the program that has written. The dimension that this treatment working procedure basically assures is deepness A (see a picture 1) , if deepness A appears bigger error, of barrel of perforation of will immediate impact bear control capacity (> when A) or perforation is worn deep (the graph is shown 1 times) , tubal material attributes normal situation, do not appear namely bend. Right now cutting tool is B1 to the space that provides material, if machine program set machines blind aperture deepness to be A, criterion cutting tool journey is: B1 ＋ A, visit Cheng by set of program of equipment numerical control, in machining a process, be changeless. If be in charge of material to bend serious, will give now to list a situation: 1) like the graph 2 are shown, tubal material bends outwards, if want to make sure the deepness that blind aperture machines still is A, criterion the journey of cutting tool must be: B2+A, curve an influence as a result of what provide material apparently, have B2>B1, undertake machining according to the program of set of numerical control system, the blind aperture of inevitable meeting occurrence treatment. 2) like the graph 3 are shown, tubal material is incurvate, if want to make sure the deepness that blind aperture machines still is A, criterion the journey of cutting tool must be: B3+A, curve an influence as a result of what provide material apparently, have B3>B1, undertake machining according to the program of set of numerical control system, the blind aperture of inevitable meeting occurrence treatment > A, what machine deepness to compare a requirement namely is deep, cannot satisfy a requirement. Pass afore-mentioned analysises, the treatment impact that tubal material curves to be spent to hole depth of perforation gun blind is very big, and the blind opening that perforation gun needs to machine is very much, material of a meter of canal has 40 opening at most at present, if do not take necessary step, inevitable meeting causes partial product to discard as useless. Aperture of blind of gun of aperture of curved to providing material curved fire machines solve method to be aimed at afore-mentioned circumstances, can adopt following measure to solve: Add around cutting tool hold a measurement unit, to providing material curve a circumstance to undertake metrical, metrical signal feedback arrives numerical control system, machine deepness through sentencing bring up the rear to adjust. Working principle is as follows: If pursue 4, measure an orgnaization by calm Cheng implement, bedspring, signal generator, adjacent switch 1 with switch 2 composition. When machining blind aperture, cutting tool is taking device to be close to to barrel, arrive when the signal generator be close to switch 1 when, switch 1 receive signal, send signal to numerical control system, numerical control system handles the servo that late statement feed-in gives, right now movement is cutting tool progressive rate is decreased come down, prevent inertial cross general cutting tool to bump to barrel. After cutting tool decelerate, continue to advance to the surface of barrel. Arrive when the signal generator be close to switch 2 when, switch 2 receive signal, send signal to numerical control system, numerical control system begins to note number, contact barrel surface till cutting tool, if pursue,5 are shown. Right now cutting tool contacts barrel surface only, did not begin to machine blind aperture. If numerical control system begins to mark the route that when number contacts barrel surface to cutting tool, takes,be X, ask the deepness of barrel blind aperture of treatment is A, criterion when process designing of numerical control system is machined, can arrive at the signal generator be close to switch 2 when begin, cutting tool is again ongoing the distance of X+A, deepness of aperture of treatment result blind is A, accord with treatment requirement. Nextpage basis afore-mentioned working principles, we can add this unit on equipment, will come true through process designing of numerical control system. The result that afore-mentioned discussion is calm Cheng implement come true below the good position that is in same position with cutting tool, when be being operated actually, calm Cheng implement with cutting tool or existence proper place is apart from. When tubal material bends, the position of barrel of cutting tool contact and calm Cheng implement osculatory position is not on same plane, we magnify our as follows the graph shows 6 times: Can see from inside the graph, when tubal material bends, cutting tool and calm Cheng implement ongoing distance error is B. Calm Cheng implement stand by cutting tool more, error B is smaller, when both and adjacent when arriving to be apart from certainly, criterion B is negligible not plan. Apply actually, can will decide Cheng implement outfit around cutting tool, assure machining error. The photograph is the circumstance after installing this measurement unit below, the course is used actually, the effect is distinct, can solve tubal material to curve aperture of blind of influence perforation gun to machine the problem of deepness. The last word curves pair of perforation gun blind through analysing tubal capable person the influence of aperture treatment deepness, find out settle way, practice proves this method is feasible. The proposal holds this unit to machining the equipment of aperture of perforation gun blind to add. CNC Milling CNC Machining