CN101372040A - Seamless steel pipe inner bore cutting and processing equipment as well as method for processing the same - Google Patents
Seamless steel pipe inner bore cutting and processing equipment as well as method for processing the same Download PDFInfo
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- CN101372040A CN101372040A CNA2008101965779A CN200810196577A CN101372040A CN 101372040 A CN101372040 A CN 101372040A CN A2008101965779 A CNA2008101965779 A CN A2008101965779A CN 200810196577 A CN200810196577 A CN 200810196577A CN 101372040 A CN101372040 A CN 101372040A
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Abstract
The invention relates to a machining equipment of a seamless pipe inner hole and a processing method thereof, which is mainly used for machining the seamless pipe, the inner hole of which has crack or burn. The machining equipment comprise a head end box, a main motor, a first recycle pump, a cutting liquid tank, a cutting trolley, a ground rack, a drive mechanism which drives the cutting trolley to do straight reciprocating motion along the ground track, a core pin and a machining cutter which is arranged on one end of the core pin. The main motor drives the core pin to rotate by a gearing in the head end box; the core pin comprises multiple sections of rod sections and multiple sections of sizing sections; the sizing sections and the outside diameter of the rear end of the cutting cutter are matched with the inner diameter of the machined seamless pipe; a movable core pin support is arranged below the core pin; the cutting trolley is provided with the seamless pipe support below the seamless pipe. The machining equipment has high production efficiency, low production cost, reasonable structure, can repair the scrapped seamless pipe, and can effectively eliminate the crackle and turn on the surface of the inner circle, increases the smooth finish of the surface of the inner hole and increases corrosion resistance performance.
Description
Technical field
The present invention relates to a kind of seamless steel pipe inner bore cutting machines and processing method thereof.
Background technology
The seamless steel pipe that seamless steel tubing mill produces, tube wall has crackle or burn and degree of depth overgauge setting, through ultrasonic examination or eddy current inspection check, is defective work.For the crackle of outer surface or the seamless steel pipe of burn, can adopt methods such as throwing, mill or machining to reprocess, remove the crackle or the burn of outer round surface, reach the requirement of certified products.But crackle or burn for inner surface, because the length of seamless steel pipe is generally more than 8m, its crack depth is generally about 0.2～1.00mm, the crackle of its inner surface is difficult to remove, especially the seamless steel pipe of external diameter below 80mm, the jet chimneys that are used as chemical pipeline or HTHP etc. more, the seamless steel pipe that inner surface has crackle or a burn in use its crackle or burn site is used by various media (acid, alkali, high-temperature steam) corrosion and influence easily, causes security incident easily.Therefore, how removing the crackle and the burn of seamless steel pipe inner surface, is that numerous seamless steel tube production producer thirsts for for a long time solving always and not have a technical barrier of solution.
Summary of the invention
The technical problem to be solved in the present invention is: solve the crackle of the seamless steel pipe inner surface of producing in the prior art and the technical problem that burn is difficult to remove, the invention provides a kind of seamless steel pipe inner bore cutting machines and processing method thereof, with seamless steel pipe inner bore cutting machines of the present invention and processing method, can effectively remove the crackle and the burn of seamless steel pipe inner surface.
The technical solution adopted for the present invention to solve the technical problems is: a kind of seamless steel pipe inner bore cutting machines, has geared head, main motor, first circulating pump, the cutting fluid case, the cutting dolly, the ground rail, order about the cutting dolly and make the driving mechanism of straight reciprocating motion along the ground rail, core bar and the cutting tool that is installed in core bar one end, core bar is a hollow pipe fitting, core bar is made up of plurality of sections bar section and plurality of sections sizing section, bar section and sizing section are provided with successively at interval, bar section external diameter is less than the sizing section external diameter, the external diameter of sizing section and the internal diameter of the seamless steel pipe after the machining match, cutting tool has the cutter hub of hollow and is fixedly mounted on the cutter head of cutter head body, the internal diameter of the seamless steel pipe after cutter hub afterbody external diameter and the machining matches, cutter head has two and along the cutter hub circumference uniform distribution at least, cutter hub is fixedlyed connected with core bar, offer the cutting fluid outlet on the cutter hub at nearly cutter head place, the core bar other end connects the liquid outlet of first circulating pump by pipeline, the liquid sucting port of first circulating pump feeds under the liquid level of cutting fluid case, fixed installation is useful on the core bar anchor clamps of clamping core bar on the geared head, be equipped with in the geared head and drive the transmission mechanism that the core bar anchor clamps rotate, the output shaft of main motor is connected with transmission mechanism, the core bar below is provided with the movable core bar supporting that is used to support core bar, fixed installation is useful on the seamless steel pipe anchor clamps and the core bar bearing of clamping seamless steel pipe on the cutting dolly, the core bar bearing has the core bar hole, core bar is located in the core bar hole, and the seamless steel pipe supporting of supporting seamless steel pipe is housed below seamless steel pipe on the cutting dolly.The seamless steel pipe below is provided with oil groove, and the length of oil groove is greater than the length of seamless steel pipe.
Adopt cutting tool that seamless steel pipe inner bore is carried out machining, can effectively remove the crackle and the burn of seamless steel pipe internal circular surfaces.Feed cutting fluid in the core bar inner chamber, wash away smear metal from the cutting fluid outlet ejection cutting fluid of cutter head.The cutter hub rear portion external diameter of cutting tool and the seamless steel pipe caliber after the machining match, core bar is made up of plurality of sections bar section and plurality of sections sizing section, bar section and sizing section are provided with successively at interval, bar section external diameter is less than the sizing section external diameter, the external diameter of sizing section and the internal diameter of the seamless steel pipe after the machining match, the rear portion of core bar cutter hub and the sizing section of core bar match with seamless steel pipe after the processing, and cutting tool is played guide effect preferably, guarantee the linearity requirement of cutting tool operation.It is the key of the big deep hole machining of draw ratio that the linearity of cutting tool operation requires, the cutting output deviation that cutting tool wanders off and can cause cutter head, wherein a side cutting output of steel pipe internal-surface is increasing, and opposite side does not have cutting, finally causes this cutter head and seamless steel pipe inner bore to be killed.Adopt seamless steel pipe supporting and core bar supporting to support seamless steel pipe and core bar respectively, guarantee the linearity of seamless steel pipe and core bar, the seamless steel pipe inner bore after avoiding processing is snakelike.
For ease of making, the bar section and the sizing section of described core bar are threaded, the hand of spiral of screw thread and the direction of rotation of core bar, the seamless steel pipe that is more or less the same at the seamless steel pipe internal diameter size, the sizing section that only needs to change corresponding specification gets final product, the available unified specification of bar section, the utilization rate height of bar section has reduced production cost; The length of every section bar section is 800mm～3000mm, and the length of every section sizing section is 60mm～250mm.The length of bar section and the length of sizing section are selected according to the caliber size and the wall thickness of seamless steel pipe.
On the described cutting dolly guide rail is housed below seamless steel pipe, interval 1000mm～3000mm is provided with a seamless steel pipe supporting on the guide rail, and the bottom and the guide rail of seamless steel pipe supporting are slidingly connected.According to being provided with at interval of the caliber of seamless steel pipe and the selected seamless steel pipe supporting of wall thickness, the seamless steel pipe of, wall thickness little for caliber, being provided with of seamless steel pipe supporting is little at interval, the seamless steel pipe that caliber is big, wall thickness is thick, being provided with of seamless steel pipe supporting is big at interval.
For improving the recycling rate of waterused of cutting tool, reduce the cost of seamless steel pipe machining, offer the cutter head groove on the periphery of the head of described cutter hub, the cutter head groove is open-ended square elongated slot, the length of cutter head groove is less than the length of cutter head, and the width of cutter head groove and cutter head width match, and the degree of depth of cutter head groove is less than the thickness of cutter head, cutter head is inserted in the cutter head groove, and the gland that is used for fastening cutter head, the cutter hub of shutoff simultaneously inner chamber is equipped with in the cutter hub end.Can change again behind the tool bit abrasion.
Simple for reaching device structure, the purpose that production efficiency is high, described driving mechanism comprises motor, driving wheel, wirerope and fixed pulley, motor is fixedlyed connected with driving wheel, driving wheel is fixedly mounted on near-car head case place, fixed pulley is fixedly installed on the outside away from an end of geared head of ground rail, and wirerope one end is wound on the driving wheel, the other end is by being connected with the cutting cart stationary behind the fixed pulley.
For reaching the speed stable purpose of machining, described driving mechanism comprises motor, drive sprocket, chain, transition sprocket wheel and driven sprocket, chain is sleeved on drive sprocket, transition sprocket wheel and the driven sprocket, drive sprocket is fixedlyed connected with the output shaft of motor, the transition sprocket wheel is fixedly mounted on the cutting dolly, drive sprocket is fixedly mounted on near-car head case place, and driven sprocket is fixedly installed on the outside away from an end of geared head of ground rail.
For reaching the purpose that cutting fluid can circulate automatically and reuse, oil groove is installed on the cutting dolly, on the cutting dolly fuel tank and second circulating pump are housed also, oil groove has the oil groove liquid outlet, fuel tank is arranged on the below of oil groove liquid outlet, the liquid sucting port of second circulating pump feeds under the liquid level of fuel tank, and the liquid outlet of second circulating pump is by the logical cutting fluid case of pipeline.After being used for cooling off the cutter head of cutting tool, the cutting fluid of washing away smear metal and flowing out, flow into fuel tank, inject the cutting fluid case by second circulating pump again, realize the automatic circulation recycling of cutting fluid by the oil groove liquid outlet of oil groove from seamless steel pipe.
For reach cutting fluid can circulate automatically recycling, simultaneously can reach the purpose that device structure is simple, cost of manufacture is low again, described cutting fluid case is embedded in subsurface, described oil groove is opened in ground, oil groove communicates with the cutting fluid case.
A kind ofly utilize aforesaid seamless steel pipe inner bore cutting machines that seamless steel pipe is carried out the method for machining, have following processing step:
A. material is prepared: detect the seamless steel pipe linearity, the linearity of controlling seamless steel pipe to be processed is below the 0.5mm/m; To the seamless steel pipe of linearity 〉=0.5mm/m the steel tube straightening machine colonel below linearity 0.5mm/m;
B. machining: with linearity is that seamless steel pipe below the 0.5mm/m is installed on the cutting dolly, and adjusts the position that each seamless steel pipe supporting and core bar support; Cutter head is packed in the cutter head groove on the cutter hub, with gland cutter head is compressed, match at the radius of the cutter head of grinding cutting tool on the grinding machine seamless steel pipe inner bore to the distance of the centreline space of the cutting edge of cutter head and cutter hub and the machining of determining according to the Cutting Process needs; The cutting tool that grinding is good is installed on the core bar, and the core bar that cutting tool one end is housed is passed core bar hole on the core bar bearing, the other end of core bar core bar clamp; Start main motor, drive core bar and rotate, start the operation of driving mechanism forward, drive the cutting dolly and advance, carry out the seamless steel pipe inner bore machining, adjust the position of core bar supporting in the working angles according to the cutting process.
For the darker seamless steel pipe of crack depth, can repeat repeatedly the processing technology step of b, remove fully until the crackle and the burn of inner surface.
For enhancing productivity, the pace of described cutting dolly is 60～100mm/ branch.
The invention has the beneficial effects as follows, seamless steel pipe inner bore cutting machines of the present invention, the production efficiency height, cost is low, rational in infrastructure.Can utilize the seamless steel pipe of scrapping (about 0.8 ten thousand yuan/ton of its market price) to reprocess processing, effectively remove the crackle and the burn on seamless steel pipe inner bore surface, and can improve seamless steel pipe inner bore surface smoothness and corrosion resistance, reach the seamless steel pipe (about 3.0 ten thousand yuan/ton of its market price) that meets product requirement, greatly reduce the percent defective in the seamless steel tube production, remarkable in economical benefits.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of first embodiment of the present invention;
Fig. 2 is the structural representation of the cutting tool among the present invention;
Fig. 3 is the structural representation of the cutter hub among the present invention;
Fig. 4 is the structural representation of the gland among the present invention;
Fig. 5 is the structural representation of second embodiment of the present invention.
1. geared heads among the figure, 2. main motor, 3. first circulating pump, 4. cutting fluid case, 5. cutting dolly, 6. rail, 7. core bar, 7-1. bar section, 7-2. sizing section, 8. cutting tool, 8-1. cutter hub, 8-2. cutter head, the outlet of 8-3. cutting fluid, 8-4 cutter head groove, 8-5. gland, 9. core bar anchor clamps, 10. core bar supporting, 11. the seamless steel pipe anchor clamps, 12. core bar bearings, the supporting of 13. seamless steel pipes, 14. oil groove, 15. guide rails, 16. motors, 17. driving wheel, 18. wireropes, 19. fixed pulleys, 20. drive sprocket, 21. chains, 22. transition sprocket wheels, 23. driven sprocket, 24. fuel tanks, 25. second circulating pumps.
The specific embodiment
First embodiment of seamless steel pipe inner bore cutting machines of the present invention as shown in Figure 1, geared head 1, main motor 2, first circulating pump 3, cutting fluid case 4, cutting dolly 5, rail 6, order about cutting dolly 5 and make driving mechanism, the core bar 7 of straight reciprocating motion and be installed in the cutting tool 8 of core bar 7 one ends along ground rail 6.
Core bar 7 is a hollow pipe fitting, core bar 7 is made up of six sections bar section 7-1 and five sections sizing section 7-2, the length of every section bar section 7-1 is 2000mm, the length of every section sizing section 7-2 is 200mm, bar section 7-1 and sizing section 7-2 are provided with successively at interval, and bar section 7-1 and sizing section 7-2 are threaded, the direction of rotation of the hand of spiral of screw thread and core bar 7, bar section 7-1 external diameter is less than sizing section 7-2 external diameter, and the external diameter of sizing section 7-2 and the internal diameter of the seamless steel pipe after the machining match.
Shown in Fig. 2～4, cutting tool 8 has the cutter hub 8-1 of hollow and is fixedly mounted on the cutter head 8-2 of cutter hub 8-1 head, cutter head 8-2 has four and along cutter hub 8-1 circumference uniform distribution, the radius of the seamless steel pipe inner bore after the distance of the centreline space of the cutting edge of cutter head 8-2 and cutter hub 8-1 and the machining of determining according to the Cutting Process needs matches, offer cutting fluid outlet 8-3 on the cutter hub 8-1 at nearly cutter head 8-2 place, offer cutter head groove 8-4 on the periphery of the head of cutter hub 8-1, cutter head groove 8-4 is open-ended square elongated slot, the length of cutter head groove 8-4 is less than the length of cutter head, the width of cutter head groove 8-4 and cutter head 8-2 width match, the length of cutter head groove 8-4 is than the short 0.5mm of the length of cutter head 8-2, little 2～the 3mm of thickness of the depth ratio cutter head 8-2 of cutter head groove 8-4, cutter head 8-2 is inserted among the cutter head groove 8-4, cutter hub 8-1 is equipped with the end and is used for fastening cutter head 8-2, the gland 8-5 of the cutter hub of shutoff simultaneously 8-1 inner chamber, the afterbody of cutter hub 8-1 is threaded with core bar 7, and the hand of spiral of its screw thread is opposite with the direction of rotation of core bar 7, and the afterbody external diameter of cutter hub 8-1 and the internal diameter of the seamless steel pipe after the machining match.
Core bar 7 other ends connect the liquid outlet of first circulating pump 3 by pipeline, and the liquid sucting port of first circulating pump 3 feeds under the liquid level of cutting fluid case 4.
Fixed installation is useful on the core bar anchor clamps 9 of clamping core bar 7 on the geared head 1, core bar anchor clamps 9 are scroll chuck, be equipped with in the geared head 1 and drive the transmission mechanism that core bar anchor clamps 9 rotate, the output shaft of main motor 2 is connected with transmission mechanism, and core bar 7 belows are provided with the movable core bar supporting 10 that is used to support core bar 7.
Fixed installation is useful on the seamless steel pipe anchor clamps 11 and the core bar bearing 12 of clamping seamless steel pipe on the cutting dolly 5, seamless steel pipe anchor clamps 11 are scroll chuck, core bar bearing 12 has the core bar hole, during cutting, core bar 7 is located in the core bar hole on the core bar bearing 12, on the cutting dolly 5 guide rail 15 is housed below seamless steel pipe, interval 2000mm is provided with the seamless steel pipe supporting 13 of a supporting seamless steel pipe on the guide rail 15, and seamless steel pipe supports 13 bottom and guide rail 15 is slidingly connected and the position of seamless steel pipe supporting 13 can lock.
The seamless steel pipe below is provided with oil groove 14, the length of oil groove 14 is greater than the length of seamless steel pipe, oil groove 14 is installed on the cutting dolly, on the cutting dolly fuel tank 24 and second circulating pump 25 are housed also, oil groove 14 has the oil groove liquid outlet, fuel tank 24 is arranged on the below of oil groove liquid outlet, and the liquid sucting port of second circulating pump 25 feeds under the liquid level of fuel tank 24, and the liquid outlet of second circulating pump 25 is by the logical cutting fluid case 4 of pipeline.
Driving mechanism comprises motor 16, driving wheel 17, wirerope 18 and fixed pulley 19, motor 16 is fixedlyed connected with driving wheel 17, driving wheel 17 is fixedly mounted on near-car head case 1 place, fixed pulley 19 is fixedly installed on the outside away from an end of geared head 1 of ground rail 6, wirerope 18 1 ends are wound on the driving wheel 17, the other end by fixed pulley 19 backs with cut dolly 5 and fixedly connected.
Utilize above-mentioned seamless steel pipe inner bore cutting machines that the pipe external diameter is 4mm, wall thickness permissible variation ± 10%s for 60mm, wall thickness, be that wall thickness is 3.6～4.4mm, length is that 12000mm, crack depth are the method that the seamless steel pipe of 0.2～0.3mm carries out machining, has following processing step:
A. material is prepared: detect the seamless steel pipe linearity, the linearity of controlling seamless steel pipe to be processed is below the 0.5mm/m; To the seamless steel pipe of linearity 〉=0.5mm/m the steel tube straightening machine colonel below linearity 0.5mm/m;
B. machining: with linearity is that seamless steel pipe below the 0.5mm/m is installed on the cutting dolly, and adjusts the position that each seamless steel pipe supporting and core bar support; Cutter head is packed in the cutter head groove on the cutter hub, cutter head is compressed with gland, on grinding machine the cutter head of grinding cutting tool to the centreline space of the cutting edge of cutter head and cutter hub apart from 26.3mm; The cutting tool that grinding is good is installed on the core bar, and the core bar that cutting tool one end is housed is passed core bar hole on the core bar bearing, the other end of core bar core bar clamp; Start main motor, drive core bar and rotate, start the operation of driving mechanism forward, drive the cutting dolly and advance, carry out the seamless steel pipe inner bore machining, adjust the position of core bar supporting in the working angles according to the cutting process.
Second embodiment of seamless steel pipe inner bore cutting machines of the present invention as shown in Figure 5, geared head 1, main motor 2, first circulating pump 3, cutting fluid case 4, cutting dolly 5, rail 6, order about cutting dolly 5 and make driving mechanism, the core bar 7 of straight reciprocating motion and be installed in the cutting tool 8 of core bar 7 one ends along ground rail 6.
Core bar 7 is a hollow pipe fitting, core bar 7 is made up of eight sections bar section 7-1 and seven sections sizing section 7-2, the length of every section bar section 7-1 is 1500mm, the length of every section sizing section 7-2 is 200mm, bar section 7-1 and sizing section 7-2 are provided with successively at interval, and bar section 7-1 and sizing section 7-2 are threaded, the direction of rotation of the hand of spiral of screw thread and core bar 7, bar section 7-1 external diameter is less than sizing section 7-2 external diameter, and the external diameter of sizing section 7-2 and the internal diameter of the seamless steel pipe after the machining match.
The structure of the cutting tool in the present embodiment is identical with first embodiment, shown in Fig. 2～4, cutting tool 8 has the cutter hub 8-1 of hollow and is fixedly mounted on the cutter head 8-2 of cutter hub 8-1 head, cutter head 8-2 has four and along cutter hub 8-1 circumference uniform distribution, the radius of the seamless steel pipe inner bore after the distance of the centreline space of the cutting edge of cutter head 8-2 and cutter hub 8-1 and the machining of determining according to the Cutting Process needs matches, offer cutting fluid outlet 8-3 on the cutter hub 8-1 at nearly cutter head 8-2 place, offer cutter head groove 8-4 on the periphery of the head of cutter hub 8-1, cutter head groove 8-4 is open-ended square elongated slot, the length of cutter head groove 8-4 is less than the length of cutter head, the width of cutter head groove 8-4 and cutter head 8-2 width match, the length of cutter head groove 8-4 is than the short 0.5mm of the length of cutter head 8-2, little 2～the 3mm of thickness of the depth ratio cutter head 8-2 of cutter head groove 8-4, cutter head 8-2 is inserted among the cutter head groove 8-4, cutter hub 8-1 is equipped with the end and is used for fastening cutter head 8-2, the gland 8-5 of the cutter hub of shutoff simultaneously 8-1 inner chamber, the afterbody of cutter hub 8-1 is threaded with core bar 7, and the hand of spiral of its screw thread is opposite with the direction of rotation of core bar 7, and the afterbody external diameter of cutter hub 8-1 and the internal diameter of the seamless steel pipe after the machining match.
Core bar 7 other ends connect the liquid outlet of first circulating pump 3 by pipeline, and the liquid sucting port of first circulating pump 3 feeds under the liquid level of cutting fluid case 4.
Fixed installation is useful on the core bar anchor clamps 9 of clamping core bar 7 on the geared head 1, core bar anchor clamps 9 are scroll chuck, be equipped with in the geared head 1 and drive the transmission mechanism that core bar anchor clamps 9 rotate, the output shaft of main motor 2 is connected with transmission mechanism, and core bar 7 belows are provided with the movable core bar supporting 10 that is used to support core bar 7.
Fixed installation is useful on the seamless steel pipe anchor clamps 11 and the core bar bearing 12 of clamping seamless steel pipe on the cutting dolly 5, seamless steel pipe anchor clamps 11 are scroll chuck, core bar bearing 12 has the core bar hole, during cutting, core bar 7 is located in the core bar hole on the core bar bearing 12, on the cutting dolly 5 guide rail 15 is housed below seamless steel pipe, interval 2000mm is provided with the seamless steel pipe supporting 13 of a supporting seamless steel pipe on the guide rail 15, and seamless steel pipe supports 13 bottom and guide rail 15 is slidingly connected and the position of seamless steel pipe supporting 13 can lock.
Cutting fluid case 4 is embedded in subsurface, and oil groove 14 is opened in ground, and oil groove 14 communicates with cutting fluid case 4.The cutting fluid that the oil groove liquid outlet of oil groove 14 flows out flows directly in the cutting fluid case 4.
Driving mechanism comprises motor 16, drive sprocket 20, chain 21, transition sprocket wheel 22 and driven sprocket 23, chain 21 is sleeved on drive sprocket 20, transition sprocket wheel 22 and the driven sprocket 23, drive sprocket 20 is fixedlyed connected with the output shaft of motor 16, transition sprocket wheel 22 is fixedly mounted on the cutting dolly 5, drive sprocket 20 is fixedly mounted on near-car head case 1 place, and driven sprocket 23 is fixedly installed on the outside away from an end of geared head 1 of ground rail 19.
Utilize above-mentioned seamless steel pipe inner bore cutting machines that the pipe external diameter is 5mm, wall thickness permissible variation ± 10%s for 50mm, wall thickness, be that wall thickness is 4.5～5.5mm, length is that 12000mm, crack depth are the method that the seamless steel pipe of 0.5mm carries out machining, has following processing step:
A. material is prepared: detect the seamless steel pipe linearity, the linearity of controlling seamless steel pipe to be processed is below the 0.5mm/m; To the seamless steel pipe of linearity 〉=0.5mm/m the steel tube straightening machine colonel below linearity 0.5mm/m;
B. machining: with linearity is that seamless steel pipe below the 0.5mm/m is installed on the cutting dolly, and adjusts the position that each seamless steel pipe supporting and core bar support; Cutter head is packed in the cutter head groove on the cutter hub, with gland cutter head is compressed, the distance of the cutting edge of the cutter head of grinding cutting tool cutter head extremely and cutter hub centreline space is 20.3mm on grinding machine; The cutting tool that grinding is good is installed on the core bar, and the core bar that cutting tool one end is housed is passed core bar hole on the core bar bearing, the other end of core bar core bar clamp; Start main motor, drive core bar and rotate, start the operation of driving mechanism forward, drive the cutting dolly and advance, carry out the seamless steel pipe inner bore machining, adjust the position of core bar supporting in the working angles according to the cutting process;
C. machining again: driving mechanism inverted running, core bar and cutting tool withdraw from seamless steel pipe inner bore, cutting tool is pulled down, change cutter head, cutter head is packed in the cutter head groove on the cutter hub, with gland cutter head is compressed, the distance of the cutting edge of the cutter head of grinding cutting tool cutter head extremely and cutter hub centreline space is 20.5mm on grinding machine; The cutting tool that grinding is good is installed on the core bar, and the core bar that cutting tool one end is housed is passed core bar hole on the core bar bearing, the other end of core bar core bar clamp; Start main motor, drive core bar and rotate, start the operation of driving mechanism forward, drive the cutting dolly and advance, carry out the seamless steel pipe inner bore machining, adjust the position of core bar supporting in the working angles according to the cutting process.The pace of cutting dolly is the 80mm/ branch.
In conjunction with the accompanying drawings embodiments of the invention have been done detailed description above, but the present invention is not limited to the foregoing description, in the ken that those of ordinary skills possessed, can also under the prerequisite that does not break away from aim of the present invention, make various variations, for example, being connected between the cutter hub of cutting tool and the core bar, can also adopt the core bar head to insert the cutter hub afterbody, at cutter hub and core bar connecting portion circumference with dormant bolt with both locking positions.
Claims (11)
1. seamless steel pipe inner bore cutting machines, it is characterized in that: have geared head (1), main motor (2), first circulating pump (3), cutting fluid case (4), cutting dolly (5), ground rail (6), order about cutting dolly (5) and make the driving mechanism of straight reciprocating motion along ground rail (6), core bar (7) and be installed in the cutting tool (8) of core bar (7) one ends, core bar (7) is a hollow pipe fitting, core bar (7) is made up of plurality of sections bar section (7-1) and plurality of sections sizing section (7-2), bar section (7-1) and sizing section (7-2) are provided with successively at interval, bar section (7-1) external diameter is less than sizing section (7-2) external diameter, the external diameter of sizing section (7-2) and the internal diameter of the seamless steel pipe after the machining match, cutting tool (8) has the cutter hub (8-1) of hollow and is fixedly mounted on the cutter head (8-2) of cutter hub (8-1) head, the internal diameter of the seamless steel pipe after cutter hub (8-1) afterbody external diameter and the machining matches, cutter head (8-2) has two and along cutter hub (8-1) circumference uniform distribution at least, cutter hub (8-1) is fixedlyed connected with core bar (7), offer cutting fluid outlet (8-3) on the cutter hub (8-1) that nearly cutter head (8-2) is located, core bar (7) other end connects the liquid outlet of first circulating pump (3) by pipeline, the liquid sucting port of first circulating pump (3) feeds under the liquid level of cutting fluid case (4), geared head (1) is gone up the core bar anchor clamps (9) that fixed installation is useful on clamping core bar (7), be equipped with in the geared head (1) and drive the transmission mechanism that core bar anchor clamps (9) rotate, the output shaft of main motor (2) is connected with transmission mechanism, core bar (7) below is provided with the movable core bar supporting (10) that is used to support core bar (7), cutting dolly (5) is gone up seamless steel pipe anchor clamps (11) and the core bar bearing (12) that fixed installation is useful on the clamping seamless steel pipe, core bar bearing (12) has the core bar hole, during cutting, core bar (7) is located in the core bar hole, cutting dolly (5) is gone up the seamless steel pipe supporting (13) that the supporting seamless steel pipe is housed below seamless steel pipe, the seamless steel pipe below is provided with oil groove (14), and the length of oil groove (14) is greater than the length of seamless steel pipe.
2. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: the bar section (7-1) and the sizing section (7-2) of described core bar (7) are threaded, the direction of rotation of the hand of spiral of screw thread and core bar (7), the length of every section bar section (7-1) is 800mm～3000mm, and the length of every section sizing section (7-2) is 60mm～250mm.
3. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: described cutting dolly (5) is gone up guide rail (15) is housed below seamless steel pipe, guide rail (15) is gone up interval 1000mm～3000mm a seamless steel pipe supporting (13) is set, and the bottom and the guide rail (15) of seamless steel pipe supporting (13) are slidingly connected.
4. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: offer cutter head groove (8-4) on the periphery of the head of described cutter hub (8-1), cutter head groove (8-4) is open-ended square elongated slot, the length of cutter head groove (8-4) is less than the length of cutter head, the width of cutter head groove (8-4) and cutter head (8-2) width match, the degree of depth of cutter head groove (8-4) is less than the thickness of cutter head (8-2), cutter head (8-2) is inserted in the cutter head groove (8-4), and cutter hub (8-1) end is equipped with and is used for fastening cutter head (8-2), the gland (8-5) of while shutoff cutter hub (8-1) inner chamber.
5. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: described driving mechanism comprises motor (16), driving wheel (17), wirerope (18) and fixed pulley (19), motor (16) is fixedlyed connected with driving wheel (17), driving wheel (17) is fixedly mounted on near-car head case (1) and locates, fixed pulley (19) is fixedly installed on the outside away from an end of geared head (1) of ground rail (6), wirerope (18) one ends are wound on that driving wheel (17) is gone up, the other end by fixed pulley (19) back with cut dolly (5) and fixedly connected.
6. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: described driving mechanism comprises motor (16), drive sprocket (20), chain (21), transition sprocket wheel (22) and driven sprocket (23), chain (21) is sleeved on drive sprocket (20), on transition sprocket wheel (22) and the driven sprocket (23), drive sprocket (20) is fixedlyed connected with the output shaft of motor (16), transition sprocket wheel (22) is fixedly mounted on the cutting dolly (5), drive sprocket (20) is fixedly mounted on near-car head case (1) and locates, and driven sprocket (23) is fixedly installed on the outside away from an end of geared head (1) of ground rail (19).
7. seamless steel pipe inner bore cutting machines according to claim 1, it is characterized in that: described oil groove (14) is installed on the cutting dolly, on the cutting dolly fuel tank (24) and second circulating pump (25) are housed also, oil groove (14) has the oil groove liquid outlet, fuel tank (24) is arranged on the below of oil groove liquid outlet, the liquid sucting port of second circulating pump (25) feeds under the liquid level of fuel tank (24), and the liquid outlet of second circulating pump (25) is by the logical cutting fluid case (4) of pipeline.
8. seamless steel pipe inner bore cutting machines according to claim 1 is characterized in that: described cutting fluid case (4) is embedded in subsurface, and described oil groove (14) is opened in ground, and oil groove (14) communicates with cutting fluid case (4).
9. utilize as each described seamless steel pipe inner bore cutting machines of claim 1-8 seamless steel pipe carried out the method for machining, it is characterized in that having following processing step:
A. material is prepared: detect the seamless steel pipe linearity, the linearity of controlling seamless steel pipe to be processed is below the 0.5mm/m; To the seamless steel pipe of linearity 〉=0.5mm/m the steel tube straightening machine colonel below linearity 0.5mm/m;
B. machining: with linearity is that seamless steel pipe below the 0.5mm/m is installed on the cutting dolly, and adjusts the position that each seamless steel pipe supporting and core bar support; Cutter head is packed in the cutter head groove on the cutter hub, with gland cutter head is compressed, match at the radius of the cutter head of grinding cutting tool on the grinding machine seamless steel pipe inner bore to the distance of the cutting edge of cutter head and cutter hub centreline space and the machining of determining according to the Cutting Process needs; The cutting tool that grinding is good is installed on the core bar, and the core bar that cutting tool one end is housed is passed core bar hole on the core bar bearing, the other end of core bar core bar clamp; Start main motor, drive core bar and rotate, start the operation of driving mechanism forward, drive the cutting dolly and advance, carry out the seamless steel pipe inner bore machining, adjust the position of core bar supporting in the working angles according to the cutting process.
10. the method for machining according to claim 9, it is characterized in that: described b step can repeat according to crack depth.
11. the method for machining according to claim 9 is characterized in that: the pace of described cutting dolly is 60～100mm/ branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101965779A CN101372040B (en) | 2008-09-11 | 2008-09-11 | Seamless steel pipe inner bore cutting and processing equipment as well as method for processing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101965779A CN101372040B (en) | 2008-09-11 | 2008-09-11 | Seamless steel pipe inner bore cutting and processing equipment as well as method for processing the same |
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| Publication Number | Publication Date |
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| CN101372040A true CN101372040A (en) | 2009-02-25 |
| CN101372040B CN101372040B (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101965779A Expired - Fee Related CN101372040B (en) | 2008-09-11 | 2008-09-11 | Seamless steel pipe inner bore cutting and processing equipment as well as method for processing the same |
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| CN (1) | CN101372040B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896353A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Processing method of titanium and titanium alloy pipe with high-brightness inner surface |
| CN110732715A (en) * | 2019-10-29 | 2020-01-31 | 庄小梅 | numerical control cutting machine tool for hollow pipe internal cutting |
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| CN105458022B (en) * | 2015-12-22 | 2017-10-27 | 苏州富瑞合金科技股份有限公司 | A kind of drawing pipe and the interior double-purpose processing unit (plant) that strips off the skin |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738765A (en) * | 1969-07-18 | 1973-06-12 | M Mater | Sealing structure for pole boring machine |
| CN2238690Y (en) * | 1995-12-22 | 1996-10-30 | 德州机床厂 | Digital control deep hole boring machine |
| CN2595502Y (en) * | 2003-01-21 | 2003-12-31 | 渤海船舶重工有限责任公司 | Elongating knife rod unit for lathe |
| DE20310828U1 (en) * | 2003-07-14 | 2003-09-18 | Sieper, Heinz Dietmar, 42477 Radevormwald | Motorised lathe for insides of tubes, includes forced guide for support device for opposite end of drill rod to workpiece chuck |
| CN201067813Y (en) * | 2007-04-30 | 2008-06-04 | 德州德隆(集团)机床有限责任公司 | Large-scale deep hole drill boring lathe |
| CN201257516Y (en) * | 2008-09-11 | 2009-06-17 | 钱利敏 | Seamless steel tube inner hole cutting processing device |
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2008
- 2008-09-11 CN CN2008101965779A patent/CN101372040B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896353A (en) * | 2011-07-26 | 2013-01-30 | 张家港华裕有色金属材料有限公司 | Processing method of titanium and titanium alloy pipe with high-brightness inner surface |
| CN102896353B (en) * | 2011-07-26 | 2014-12-31 | 张家港华裕有色金属材料有限公司 | Processing method of titanium and titanium alloy pipe with high-brightness inner surface |
| CN110732715A (en) * | 2019-10-29 | 2020-01-31 | 庄小梅 | numerical control cutting machine tool for hollow pipe internal cutting |
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| CN101372040B (en) | 2010-06-09 |
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