Background technology
Seamless steel pipe is common metallurgical metallic article, and its production procedure is: pipe production (steel-making, steel rolling), steel tube blank (metal round steel), pipe are prepared (length cutting, surperficial peeling, spotting), circular steel are machined to be qualified pipe; Hollow forging is produced (domestic mainly is the hot-working piercing process: heating of pipe blank is molten admittedly, and hot-rolling perforation machine is processed into the hot rolling hollow forging with the metal pipe, hollow forging pickling finishing to high temperature pipe perforation cogging); Finished product seamless steel tube production (according to the production tube specification requirement, adopt the cold machining process of cold rolling or cold-drawn, operation in accordance with regulations requires to carry out cold deformation, hollow forging production is become the finished product seamless steel pipe of requirement up to specification); In addition, must carry out pickling, finishing, solid molten etc. after the each cold working of steel pipe.
In the seamless steel tube production process, the defective (as sparrow skin, pit, crackle, pit etc.) of inner surface, outer surface can appear in steel pipe, must carry out the reconditioning of inner surface, outer surface to the steel pipe that has defective, makes it reach the correlation technique requirement.At present, the grinding attachment (instrument) of seamless steel pipe internal wall processing (defect in inner surface processing) is that grinding machine in the steel pipe (be made up of grinding member, clamping component and transmission mechanism, power-equipment etc. in the steel pipe by grinding machine; Be characterized in: the power-equipment outputting power makes transmission mechanism drive the clamping component rotation; The grinding member is made up of mill bar, bistrique, grinding wheel cutter, and bistrique is fixed on the end of clavate mill bar, and the grinding wheel cutter is placed in the flank of bistrique.), during the steel pipe internal-surface reconditioning, the seamless steel pipe that is fixed on the clamping component rotates, and stretches into the grinding member of steel pipe inwall and does the horizontal reciprocating motion, the grinding wheel of grinding component ends carries out reconditioning to steel pipe internal-surface to be handled, and eliminates the defectives such as sparrow skin of inside pipe wall.
The titanium alloy seamless pipe is the special alloy pipe of development and production on common alloy seamless pipe basis.In the production practices, adopt when grinding machine is handled titanium alloy seamless pipe defect in inner surface in the steel pipe, only 10~20% (because titanium alloy, the intrinsic specific physical character of emery wheel: titanium alloy is comparatively soft at normal temperatures for product percent of pass; And emery wheel hardness is higher, and easily particle degrades.Therefore, on the one hand, along with the reconditioning of compo pipe inner wall defect is handled, the compo pipe inner wall temperature raises gradually, and the titanium alloy metal is softening gradually, and softening titanium alloy metal can be bonded at wheel face, causes the titanium alloy seamless pipe to scrap; On the other hand, particle easily takes place and degrades (coming off) phenomenon in the emery wheel that hardness is higher, and the emery wheel particle that degrades can embed in the titanium alloy tube inwall, destroys the institutional framework of titanium alloy tube material, influences product quality.), cause production cost high, seriously restricted the large-scale production of titanium alloy seamless pipe.
Summary of the invention
The utility model designs a kind of novel cutting gang tool of titanium alloy seamless pipe inwall processing, and it is the architecture advances of grinding machine grinding member in the steel pipe, and the bistrique, the grinding wheel cutter that the grinding member are ground boom end change the metallic combination cutter into; During the steel pipe internal-surface reconditioning, the metallic combination cutter of grinding component ends cuts reconditioning to steel pipe internal-surface and handles, and eliminates the defectives such as sparrow skin of inside pipe wall.Avoided in the titanium alloy seamless pipe inwall process, titanium alloy metal softening and emery wheel particle degrade the product quality problem that causes, and have created condition for producing high-quality titanium alloy seamless pipe.
The novel cutting gang tool of the titanium alloy seamless pipe inwall processing that the utility model provides, it is characterized in that: gang tool mainly is made up of immovable support 9, floating tool holder 6, shaping blades 3 and fixed block 1, trip bolt 2, adjustment screw 4, positioning sleeve 8, fairlead 5; Immovable support 9 integral body are cylinder, cylinder diameter is slightly less than processed titanium alloy seamless pipe 11 internal diameters, there is the annular hole slot of 1 indent at immovable support 9 middle parts, make immovable support 9 be divided into head, two parts of afterbody, the width of annular hole slot, diameter and annular shape positioning sleeve 8 sizes coupling, immovable support 9 afterbodys and solid metal rod 10 (mill bar or boring bar.In the interior grinding machine, solid metal rod 10 is made horizontal and is moved back and forth, and is referred to as to grind bar.Inside pipe wall adds man-hour, and solid metal rod 10 rotates, and is referred to as boring bar) the end fixedly connected, the afterbody of head and floating tool holder 6 flexibly connects (between immovable support 9, the floating tool holder 6, can 360 degree crooked); Floating tool holder 6 integral body are cylinder, the cylinder diameter of diameter and immovable support 9 is suitable, there is the annular hole slot of 1 indent at floating tool holder 6 middle parts, make floating tool holder 6 be divided into head, two parts of afterbody, the width of annular hole slot, diameter and annular shape fairlead 5 sizes coupling, floating tool holder 6 afterbodys are connected with the head movement of immovable support 9, the end of floating tool holder 6 evenly distributes N and settles the bar shape trench hole of shaping blades 3, the center has 1 internal thread aperture with adjustment screw 4 sizes coupling (to play on the one hand, the effect that is connected and fixed of fixed block 1, floating tool holder 6; On the other hand, play the regulating action of shaping blades 3); Be patty with the fixed block 1 of floating tool holder 6 end size coupling, fixed block 1 has 1 screwed hole of centre (size and center, floating tool holder 6 end threaded apertures coupling), (be convenient to trip bolt 2 passes (0.3~0.6) R along the center of circle (R is patty fixed block 1 radius) to have located N fastener hole, the fixing shaping blades 3 in the floating tool holder 6 end bar shape trench holes), N fastener hole evenly distributes along concentric circles, and the fastener hole diameter is slightly less than the width of floating tool holder 6 end bar shape trench holes; A measure-alike N shaping blades 3 is placed in the bar shape trench hole of floating tool holder 6 ends, and the line style blade is on same plane; Adjustment screw 4 is mated with the screwed hole of centre size of fixed block 1 screwed hole of centre, floating tool holder 6 ends, and fixed block 1, floating tool holder 6 are joined together; Trip bolt 2 mates with the bar shape trench hole of fixed block 1 fastener hole, floating tool holder 6 ends, and N trip bolt 2 is fixed on N shaping blades 3 in the bar shape trench hole of floating tool holder 6 ends; The positioning sleeve 8 that nonmetallic materials are made is shape ringwise, closely be fixed on the indent annular hole slot place at immovable support 9 middle parts, the annular hole slot size coupling at positioning sleeve 8 width, internal diameter and immovable support 9 middle parts, external diameter and processed titanium alloy seamless pipe internal diameter size coupling; The fairlead 5 that nonmetallic materials are made is shape ringwise, closely is fixed on the indent annular hole slot place at floating tool holder 6 middle parts, the annular hole slot size coupling at fairlead 5 width, internal diameter and floating tool holder 6 middle parts, and external diameter equates with positioning sleeve 8 external diameters; Above-mentioned in conjunction with constituting the utility model.
The movable connection method of floating tool holder 6 afterbodys and immovable support 9 heads, can be that universal joint 7 connects: connecting pin be fixed on universal joint 7 between immovable support 9, the floating tool holder 6, make floating tool holder 6 can 360 degree crooked (always there is certain flexibility in processed titanium alloy seamless pipe, can guarantee that the line style blade of shaping blades 3, seamless pipe inwall are in concentric circles all the time by the crooked floating tool holder 6 of 360 degree, improve crudy).
The head of immovable support 9, floating tool holder 6, afterbody can adopt internal thread to connect, and connecting portion is at the annular hole slot place at middle part (being convenient to positioning sleeve 8, the transposing of fairlead 5, installation).
Adjustment screw 4 with fixed block 1 screwed hole of centre, floating tool holder 6 end screwed hole of centre size couplings, can be two joints of primary-secondary type, female screw of lower floor, length is less than floating tool holder 6 end screwed hole of centre length (be convenient to female screw and all embed floating tool holder 6 ends), female screw bottom is cylinder screw thread (with floating tool holder 6 end screwed hole of centre size couplings), top is rounding platform (being convenient to regulate the round radius of clean-up of cutting reconditioning of shaping blades 3 blades), and the top is 1 internal thread centre bore (being connected with sub-screw thread); The sub-screw on upper strata, the bottom is the cylinder screw thread, the internal thread central hole size coupling at size and female screw top.
(quantity very little, the line style blade of shaping blades 3 can not constitute a plane, poor work stability in bar shape trench hole N=3~5 of floating tool holder 6 ends; Quantity is too many, and the installation site of floating tool holder 6 ends is difficult to arrange).
Fairlead 5, positioning sleeve 8 that nonmetallic materials are made, material can be selected nylon for use.
The mode of fixedlying connected of immovable support 9 afterbodys and solid metal rod 10 ends, can be to be threaded: immovable support 9 afterbodys be screw-like; Be connected and fixed the solid metal rod 10 of knife rest 9 afterbodys, the end is internal thread, both size couplings.
Use one: the gang tool that joins together (forming) by immovable support 9, floating tool holder 6, shaping blades 3 and fixed block 1, trip bolt 2, primary-secondary type adjustment screw 4, positioning sleeve 8, fairlead 5, universal joint 7, connecting pin, be fixed on the internal thread place of solid metal rod 10 (boring bar) end, form the grinding member, the grinding member is placed on the four pin chucks (workpiece clamp) of lathe, does the uniform speed rotation; Tubular fixture (be made up of location pinch tube 12, lining 13 by tubular fixture; Location pinch tube 12 is 1 steel pipe, 1 strip contiguous block that fixes with lathe cutter saddle is fixed in the steel pipe outside, pipe diameter is greater than processed pipe 11 external diameters) be installed on the lathe cutter saddle, adjust the strip contiguous block in pinch tube 12 outsides, location, make location pinch tube 12, boring bar is in same center line (from cross section, location pinch tube 12, solid metal rod 10 (boring bar) is in the concentric circles position), processed pipe 11 is placed in the pinch tube 12 of location, 2 pairs of linings 13 are inserted in pinch tube 12 two ends, location respectively, clamp pipe 11 (from cross section, pipe, location pinch tube 12 is in the concentric circles position), the lathe cutter saddle that joins together, tubular fixture, processed pipe 11 is made horizontal and is moved back and forth; During the steel pipe internal-surface reconditioning, processed pipe 11 entangles the grinding member, and the gang tool of grinding component ends cuts reconditioning to steel pipe 11 inner surfaces and handles, and eliminates the defectives such as sparrow skin of inside pipe wall.
Use two: the gang tool that joins together (forming) by immovable support 9, floating tool holder 6, shaping blades 3 and fixed block 1, trip bolt 2, primary-secondary type adjustment screw 4, positioning sleeve 8, fairlead 5, universal joint 7, connecting pin, be fixed on the female solid metal rod 10 in end (mill bar), form the grinding member of grinding machine in the steel pipe, the grinding member is made horizontal and is moved back and forth; In being fixed on, processed pipe on the clamping component of grinding machine, rotates; During the steel pipe internal-surface reconditioning, the grinding member stretches into steel pipe 11 inwalls, and the gang tool of grinding component ends cuts reconditioning to steel pipe internal-surface and handles, and eliminates the defectives such as sparrow skin of inside pipe wall.
Compared with the prior art, the utlity model has following advantage:
1. reasonable in design, compact conformation is simple, and is practical;
2. easy to make, material is cheap, reduces production costs;
3. simple installation is changed fast, uses firmly;
4. simple to operate, easy to maintenance, safe and efficient;
5. highly versatile can just can use on machine tool;
6. easy making process has the self-centering function, improves output;
7. wearability strengthens, and fairlead prolongs service life;
8. machining accuracy height, the inwall machined surface roughness reaches Ra 0.8;
9. processed pipe lumber recovery height.
Specific embodiments:
Iron company steel tube factory, Shanghai, implement the inwall processing that the utility model patent is used for the titanium alloy seamless pipe, it is characterized in that: gang tool is made up of immovable support 9, floating tool holder 6, shaping blades 3 and fixed block 1, trip bolt 2, adjustment screw 4, positioning sleeve 8, fairlead 5, universal joint 7, connecting pin; Immovable support 9 integral body are cylinder, cylinder diameter is slightly less than processed titanium alloy seamless pipe internal diameter, immovable support 9 afterbodys are fixedlyed connected with the end of solid metal rod 10 (mill bar or boring bar), the afterbody of head and floating tool holder 6 flexibly connects (movable connection method is that universal joint 7 is connected: connecting pin is fixed on universal joint 7 between immovable support 9, the floating tool holder 6, make floating tool holder 6 can 360 degree bendings); Floating tool holder 6 integral body are cylinder, the cylinder diameter of diameter and immovable support 9 is suitable, floating tool holder 6 afterbodys are connected with the head movement of immovable support 9, the end of floating tool holder 6 evenly distributes N=3 and settles the bar shape trench hole of shaping blades 3, center that 1 internal thread aperture that mates with adjustment screw 4 sizes is arranged; Be patty with the fixed block 1 of floating tool holder 6 end size coupling, there is 1 screwed hole (size and center, floating tool holder 6 end threaded apertures coupling) at fixed block 1 center, along center of circle 0.5R place 3 fastener holes are arranged, 3 fastener holes evenly distribute along concentric circles, and the fastener hole diameter is slightly less than the width of floating tool holder 6 end bar shape trench holes; 3 measure-alike shaping blades 3 are placed in the bar shape trench hole of floating tool holder 6 ends, and the line style blade is on same plane; (adjustment screw 4 is two joints of primary-secondary type to adjustment screw 4, female screw of lower floor, length is less than floating tool holder 6 end screwed hole of centre length, female screw bottom is the cylinder screw thread, top is the rounding platform of regulating the shaping blades 3 blade radius of clean-up, and the top is 1 internal thread centre bore that is connected with sub-screw thread; The sub-screw on upper strata, the bottom is the cylinder screw thread, the internal thread central hole size coupling at size and female screw top) mate with the screwed hole of centre size of fixed block 1 screwed hole of centre, floating tool holder 6 ends, fixed block 1, floating tool holder 6 are joined together; Trip bolt 2 mates with the bar shape trench hole of fixed block 1 fastener hole, floating tool holder 6 ends, and 3 trip bolts 2 are fixed on 3 shaping blades 3 in the bar shape trench hole of floating tool holder 6 ends; The positioning sleeve 8 that nonmetallic materials (nylon) are made is shape ringwise, closely be fixed on the indent annular hole slot place at immovable support 9 middle parts, the annular hole slot size coupling at positioning sleeve 8 width, internal diameter and immovable support 9 middle parts, external diameter and processed titanium alloy seamless pipe 11 internal diameter sizes coupling; The fairlead 5 that nonmetallic materials (nylon) are made is shape ringwise, closely is fixed on the indent annular hole slot place at floating tool holder 6 middle parts, the annular hole slot size coupling at fairlead 5 width, internal diameter and floating tool holder 6 middle parts, and external diameter equates with positioning sleeve 8 external diameters.
During work, this novel practical is placed on the machine tool and uses, and titanium alloy seamless tube blank 11 is carried out inner wall defect processing.With φ 40 * 3mm titanium alloy seamless tube blank 11 is example: the gang tool that joins together (is made up of immovable support 9, floating tool holder 6, shaping blades 3 and fixed block 1, trip bolt 2, adjustment screw 4, time positioning sleeve 8, last fairlead 5, universal joint 7, connecting pin; The cylinder diameter φ 30mm of immovable support 9, floating tool holder 6, the cutting circle diameter phi 34mm that the line style blade of 3 shaping blades 3 surrounds, the inside and outside footpath of positioning sleeve 8, fairlead 5 is respectively φ 30mm, φ 34mm), the internal thread (φ 30mm) that is fixed on solid metal rod 10 (boring bar) end is located, form the grinding member, the grinding member is placed on the four pin chucks (workpiece clamp) of lathe, does the uniform speed rotation; (tubular fixture is made up of location pinch tube 1212, lining 1313 to be installed in tubular fixture on the lathe cutter saddle; Location pinch tube 12 is steel pipes of 1 φ 100 * 5 * 800mm, 1 strip contiguous block that fixes with lathe cutter saddle is fixed in the welding of the steel pipe outside), be in the concentric circles position with solid metal rod 10 (boring bar) and (adjust the strip contiguous block in pinch tube 12 outsides, location, make location pinch tube 12, boring bar solid metal rod 10 is in same center line), processed pipe 11 is placed in the pinch tube 12 of location, (every pair of lining 13 is two halves separately to 2 pairs of linings 13, zoarium is an annular round platform, the round platform maximum outside diameter, minimum diameter is respectively φ 100mm, φ 30mm) is inserted in pinch tube 12 two ends, location clamping pipe respectively and (makes pipe 11, location pinch tube 12 is in the concentric circles position), the lathe cutter saddle that joins together, tubular fixture, processed pipe 11 is made horizontal and is moved back and forth; During the steel pipe internal-surface reconditioning, shake planker earlier with grinding member (gang tool, together with boring bar) pass pipe and stretch out pipe end (processed pipe entangles the grinding member), subsequently according to the concrete dimensional requirement of production tube, by the adjustment screw 4 of gang tool end face, 3 shaping blades 3 are adjusted to given size; Start lathe subsequently, boring bar rotating band moving knife tool rotary cutting inside pipe wall part titanium, planker feed displacement simultaneously, driving pipe evenly moves to the lathe outside, the gang tool of grinding component ends cuts reconditioning to steel pipe internal-surface and handles, eliminate the defectives such as sparrow skin of inside pipe wall, finally finish inner wall defect processing; Be disassembled into QC after the completion, reinstall next pipe and process, should in time change after cutter and fairlead 5 wearing and tearing, in order to avoid mismachining tolerance.
The utility model is reasonable in design, easy to process, simple installation, use are efficient, practical, effectively solved titanium alloy seamless pipe inner wall defect problem of difficult processing, seamless pipe machining accuracy height (the inwall machined surface roughness reaches Ra 0.8), pipe lumber recovery height, and productivity ratio height, split run production reaches more than 15, satisfies the production needs of titanium alloy seamless steel pipe, remarkable in economical benefits.