CN114559079A - Surface machining equipment and method for 9Ni steel cast blank for floor boring - Google Patents
Surface machining equipment and method for 9Ni steel cast blank for floor boring Download PDFInfo
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- CN114559079A CN114559079A CN202210464360.1A CN202210464360A CN114559079A CN 114559079 A CN114559079 A CN 114559079A CN 202210464360 A CN202210464360 A CN 202210464360A CN 114559079 A CN114559079 A CN 114559079A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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Abstract
The invention belongs to the field of machining, and particularly relates to 9Ni steel cast blank surface machining equipment and a machining method for floor boring. The clamping system can stably and reliably support the steel casting blank with larger volume and heavier mass, has simple integral structure, is easy to manufacture and maintain, is convenient and reliable to operate, can realize the processing of the 9Ni steel casting blank with low cost and high quality, vertically clamps the steel casting blank, and can visually discover the surface defects and the structural characteristics of the steel casting blank so as to conveniently make an effective processing scheme. The 9Ni steel plate is changed from a horizontal state to a vertical state, so that the steel casting blank is conveniently hoisted to a clamping system, and then the hoisting mode is firm and reliable through the processing of a floor type boring and milling machine.
Description
Technical Field
The invention belongs to the field of machining, and particularly relates to 9Ni steel cast blank surface machining equipment and a machining method for a floor boring.
Background
The 9Ni steel is mainly used for manufacturing pressure vessels and transportation ships such as Liquefied Natural Gas (LNG) storage tanks and the like, the lowest use temperature can reach-196 ℃, the strength is high, the low-temperature toughness is excellent, the welding performance is good, the steel casting blank is the material with the best toughness used in a cryogenic environment, a continuous casting mode is generally adopted to form the steel casting blank, after surface defects such as deep vibration marks, pits, cracks and the like existing in the steel casting blank in a casting state are removed, the next step of rolling processing is carried out, and finally the pressure vessel and the like are manufactured, so that an important operation process is carried out on the surface of the steel casting blank in the milling processing process, but a plurality of difficulties exist.
Because pressure vessel or boats and ships are isometric great, consequently required 9Ni steel cast billet size is great, and the quality is heavier, is difficult to process with middle-size and small-size lathe, needs to use large-scale lathe, in the course of working, and how firmly the clamping is the problem of treating a urgent need in the course of working, and steel cast billet because size and quality are great, and the appearance can have certain radian and defect, causes very big difficulty to hoist and mount and processing.
Disclosure of Invention
The invention aims to provide 9Ni steel cast blank surface machining equipment and a machining method for floor boring, which effectively perform milling processing on surface defects of steel cast blanks by adopting a low-cost and high-efficiency machining mode and a hoisting and clamping system which is stable, reliable and simple to operate.
The technical scheme adopted by the invention for solving the technical problems is as follows: the 9Ni steel cast blank surface processing equipment for floor boring comprises a clamping system, a hoisting system, steel plate clamps and plate clamps which are matched for use, wherein the number of the steel plate clamps is even, the steel plate clamps are respectively clamped on two sides of a steel cast blank, and the steel plate clamps are connected with a steel wire rope and used for moving the horizontally placed steel cast blank to a specified position; the hoisting system comprises a plurality of hoisting cross beams and clamping pull rods which are matched for use, the board cards are uniformly distributed and clamped on one side of the clamping pull rods and can be connected with the steel wire rope for hoisting and sleeving the horizontally placed clamping pull rods on the steel casting blank; the hoisting cross beam is movably and detachably connected with the top of the clamping pull rod, the middle part of the clamping pull rod is added for clamping a steel casting blank, and the hoisting cross beam is matched with the clamping pull rod to hoist the steel casting blank in a vertical state to a clamping system; the clamping system is fixed on a machine tool workbench and used for clamping and fixing a steel casting blank so that a milling cutter on the workbench can process the steel casting blank.
Furthermore, the clamping system comprises two sets of symmetrically arranged retention devices, each retention device comprises a base, a vertical support, a pressure plate assembly, a support plate, a reinforcing rib, a lower workbench, an upper workbench and a railing, the base is fixed on the machine tool workbench, one end of the base is connected with the bottom of the vertical support, the other end of the base is connected with the top of the vertical support through the reinforcing rib, the support plates are provided with two sets of support plates which are respectively fixed on the upper part and the lower part of the rear side of the vertical support, the pressure plate assembly is fixed on the support plate and used for fixing the steel casting blank on the support plate, a cushion block for supporting the steel casting blank is arranged below the support plate, a top pressure plate is arranged at the top of the vertical support, the top pressure plate is fixed on the vertical support through a top screw and a top nut which are matched with each other and used for pressing and fastening the steel casting blank on the cushion block downwards, and the lower workbench and the upper workbench are fixed on the base at the front side of the vertical support, the upper working table is provided with a railing.
Furthermore, two groups of pressing plate assemblies are fixed on each group of supporting plates, each group of pressing plate assembly comprises two pressing plates used for clamping the supporting plates and the steel casting blank, a screw rod is connected between the two pressing plates, one pressing plate is fixed on the supporting plates, a T-shaped block is fixed on the other pressing plate and used for fixing one end of the screw rod, and the other end of the screw rod penetrates through the pressing plate fixed on the supporting plates and then is screwed and fixed through a first nut.
Further, the hoisting crossbeam comprises a crossbeam main body, two upper lifting lugs are fixed at the top of the crossbeam main body, the upper lifting lugs are connected with shackles, the shackles are used for being connected with a crane hook through a steel wire braiding sleeve or a hoisting belt, two lower lifting lugs are fixed at the bottom of the crossbeam main body, a shackles group is connected to the lower lifting lugs, and the shackles group is used for connecting a clamping pull rod.
Further, the centre gripping pull rod sets up preceding pull rod and the back pull rod that is used for centre gripping steel casting blank including the symmetry, preceding pull rod and back pull rod all include the pull rod main part and set up the deep floor in the pull rod main part, be connected with the connecting piece through the connecting axle between the top of preceding pull rod and back pull rod, the tip of connecting axle passes through the locking of second nut, the connecting piece is connected with the break-out group of hoist and mount crossbeam, the bottom of preceding pull rod and back pull rod all is equipped with the pull rod base, the below of preceding pull rod and back pull rod is equipped with the bottom connecting plate, the pull rod base of preceding pull rod and back pull rod passes through the bolt fastening on the bottom connecting plate, the bottom connecting plate is used for placing the steel casting blank.
Further, the steel plate card includes steel plate card main part, and steel plate card main part one side is equipped with the recess that is used for joint steel casting blank, and the opposite side of steel plate card main part is equipped with the handle, and the top of steel plate card main part is equipped with steel plate card lug, and steel plate card lug is connected with the steel plate card and breaks out, and the steel plate card breaks out and is used for being connected with wire rope.
A machining method of 9Ni steel cast blank surface machining equipment for floor boring comprises the following steps:
1) placing the retention device in the clamping system on a boring and milling machine workbench, adjusting the working position, and tightly pressing and fixing the retention device on the working table surface of a machine tool;
2) the method comprises the following steps that after stacked steel casting blanks are dispatched to a designated position through a steel plate card, the steel plate card is detached, a clamping pull rod and a hoisting beam are detached, the clamping pull rod is sleeved on the steel casting blanks through the plate card, then the clamping pull rod is connected with the hoisting beam, and further the steel casting blanks are hoisted from a horizontal state to a vertical state and are hoisted to the designated position of a clamping system;
3) mounting the steel casting blank on a retention device, screwing the fixed pressing plate assembly and the top pressing plate, and then removing the hoisting cross beam and the clamping pull rod;
4) the method comprises the following steps of (1) carrying out tool setting, carrying out milling processing on the surface of a steel cast blank, and processing the steel cast blank to a specified thickness, wherein the working position of a milling cutter is continuously measured and adjusted in the processing process due to the radian of the surface of the steel cast blank and inconsistent thickness;
5) adjusting the position of a pressing plate assembly in the steel casting blank processing process to ensure that a processing surface has no processing dead angle, installing a hoisting system after one surface is processed, simultaneously disassembling the pressing plate assembly and a top pressing plate, unloading, overturning and re-clamping a steel casting blank from a clamping system, and then processing the other surface;
6) and after the steel casting blank is processed, a hoisting system is installed, the processed steel casting blank is placed back to a horizontal state, and the next steel casting blank is processed through a steel plate clamp.
According to the invention, the large floor type boring and milling machine is used as surface processing equipment for the 9Ni steel cast blank, and the 9Ni steel cast blank has a certain radian after continuous casting and has irregular surface defects, so that the thickness of the processed steel cast blank is ensured to be consistent, the surface processing quality is effectively ensured by adopting a manual timely adjustment operation mode, the preparation work at the early stage is simple and convenient, and the processing preparation time is effectively reduced. Carrying, overturning and the like of the 9Ni steel casting blank through a hoisting system; and clamping and fixing the steel casting blank through a clamping system so as to process.
The invention has the following beneficial effects:
1. the processing equipment disclosed by the invention is convenient to clamp, simple in processing technology, free of complex preliminary preparation work, low in technical requirements on operators, applicable to processing of different large-scale machine tools in a processing mode and strong in applicability.
2. The clamping system can stably and reliably support the steel casting blank with larger volume and heavier mass, has simple integral structure, easy manufacture and maintenance and convenient and reliable operation, can realize the processing of the 9Ni steel casting blank with low cost and high quality, vertically clamps the steel casting blank, and can intuitively discover the surface defects and the structural characteristics of the steel casting blank so as to establish an effective processing scheme.
3. The hoisting system can realize the change of the 9Ni steel plate from the horizontal state to the vertical state so as to facilitate the hoisting of the steel casting blank onto the clamping system, and further, the steel casting blank is processed by a floor type boring and milling machine, the hoisting mode is firm and reliable, the operation mode is simple, the operation process is safe and reliable, and the position change such as the hoisting, overturning and the like of the large 9Ni steel casting blank can be effectively carried out.
Drawings
Fig. 1 is a schematic structural view of a clamping system of the processing equipment of the present invention.
FIG. 2 is a schematic view showing the overall structure of the retention device of the present invention.
FIG. 3 is a side view of the retention device of the present invention.
Fig. 4 is a partial cross-sectional view of the retention device of the present invention.
FIG. 5 is a schematic structural diagram of the hoisting system for hoisting a steel casting blank.
Fig. 6 is a schematic structural view of the hoisting beam of the present invention.
FIG. 7 is a schematic view of the structure of the clamping pull rod of the present invention.
Fig. 8 is a partial cross-sectional view of a clamping lever of the present invention.
Fig. 9 is a partial cross-sectional view of the bottom end of the clamping lever of the present invention.
Fig. 10 is a top view of a clamping lever of the present invention.
Fig. 11 is a bottom view of the clamping lever of the present invention.
FIG. 12 is a schematic view showing the steel plate truck lifting a cast slab according to the present invention.
Fig. 13 is a schematic structural view of the steel plate card of the present invention.
FIG. 14 is a schematic view of the structure of the clamping pull rod sleeve on a steel casting blank according to the invention.
FIG. 15 is a first schematic view of the position of the pressing plate during the processing of the supporting plate of the present invention.
FIG. 16 is a second schematic view of the position of the pressing plate during the processing of the supporting plate of the present invention.
In the drawing, 1, a steel casting blank, 2, a retention device, 2-1, a base, 2-2, a vertical support, 2-3, a pressing plate assembly, 2-4, a supporting plate, 2-5, a reinforcing rib, 2-6, a lower workbench, 2-7, an upper workbench, 2-8, a railing, 2-9, a first nut, 2-10, a pressing plate, 2-11, a T-shaped block, 2-12, a screw rod, 2-13, a top nut, 2-14, a top pressing plate, 2-15, a top screw rod, 3, a hoisting beam, 3-1, a beam main body, 3-2, an upper lifting lug, 3-3, a lower lifting lug, 3-4, a shackle, 3-5, a shackle group, 4, a clamping pull rod, 41, a front pull rod, 42, a rear pull rod, 4-1 and a second nut, 4-2 parts of reinforcing rib plates, 4-3 parts of pull rod main bodies, 4-4 parts of connecting pieces, 4-5 parts of connecting shafts, 4-6 parts of bolts, 4-7 parts of pull rod bases, 4-8 parts of bottom connecting plates, 5 parts of steel plate clamps, 5-1 parts of steel plate clamp shackles, 5-2 parts of steel plate clamp lifting lugs, 5-3 parts of handles, 5-4 parts of steel plate clamp main bodies, 6 parts of plate clamps, 7 parts of cushion blocks, 8 parts of milling cutters, 1-1 parts of machined surfaces, 1-2 parts of unmachined surfaces.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.
The large floor type boring and milling machine is large equipment with the stroke exceeding 8 m. As shown in fig. 1, 5, 12 and 14, the 9Ni steel casting blank surface processing equipment for floor boring comprises a clamping system, a hoisting system, an even number of steel plate clamps 5 and plate clamps 6 which are matched with each other, wherein the steel plate clamps 5 are respectively clamped on two sides of a steel casting blank 1, and the steel plate clamps 5 are connected with a steel wire rope and used for moving the horizontally placed steel casting blank 1 to a specified position; the hoisting system comprises a hoisting crossbeam 3 and two symmetrical clamping pull rods 4 which are matched for use, a plurality of board cards 6 are uniformly distributed and clamped on one side of each clamping pull rod 4, and each board card 6 can be connected with a steel wire rope and is used for hoisting and sleeving the horizontally placed clamping pull rods 4 on the steel casting blank 1; the hoisting cross beam 3 is movably and detachably connected with the top of the clamping pull rod 4, the middle part of the clamping pull rod 4 is clamped with the steel casting blank 1, and the hoisting cross beam 3 is matched with the clamping pull rod 4 to hoist the steel casting blank 1 in a vertical state to a clamping system; the clamping system is fixed on a machine tool workbench and used for clamping and fixing the steel casting blank 1 so that the milling cutter 8 on the workbench can process the steel casting blank 1.
As shown in figures 1-4, the clamping system comprises two groups of symmetrically arranged retention devices 2, each retention device 2 comprises a base 2-1, a vertical support 2-2, a pressing plate assembly 2-3, a supporting plate 2-4, reinforcing ribs 2-5, a lower workbench 2-6, an upper workbench 2-7 and railings 2-8, the base 2-1 is fixed on a machine tool workbench in a matched mode through a screw, a pressing plate, a T-shaped block and nuts, one end of the base 2-1 is connected with the bottom of the vertical support 2-2, the other end of the base 2-1 is connected with the top of the vertical support 2-2 through the reinforcing ribs 2-5 in a welded mode, and the reinforcing ribs 2-5 guarantee that the steel casting blank 1 cannot deform due to overlarge stress after being clamped. Two groups of supporting plates 2-4 are arranged and respectively fixed on the upper part and the lower part of the rear side of a vertical support 2-2, a pressing plate assembly 2-3 is connected on the supporting plate 2-4, the pressing plate assembly 2-3 is used for fixing a steel casting blank 1 on the supporting plate 2-4, a cushion block 7 used for supporting the steel casting blank 1 is arranged below the supporting plate 2-4, a top pressing plate 2-14 is arranged at the top of the vertical support 2-2, the top pressing plate 2-14 is fixed on the vertical support 2-2 through a top screw 2-15 and a top nut 2-13 which are matched with each other and used for pressing and fixing the steel casting blank 1 on the cushion block 7 downwards, a lower working table 2-6 and an upper working table 2-7 are fixed on a base 2-1 at the front side of the vertical support 2-2 so that a worker can tread when the first nut of the pressing plate assembly needs to be screwed, the upper working table 2-7 is provided with railings 2-8, so that the personal safety of workers during construction is guaranteed.
Two groups of pressure plate components 2-3 are fixed on each group of supporting plates 2-4, as shown in figure 4, each group of pressure plate components 2-3 comprises two pressure plates 2-10 used for clamping the supporting plates 2-4 and the steel casting blank 1, a screw rod 2-12 is connected between the two pressure plates 2-10, one pressure plate 2-10 is fixed on the supporting plate 2-4, a T-shaped block 2-11 is fixed on the other pressure plate 2-10, the T-shaped block 2-11 is used for fixing one end of the screw rod 2-12, and the other end of the screw rod 2-12 penetrates through the pressure plates 2-10 fixed on the supporting plates 2-4 and then is screwed and fixed by a first nut 2-9.
As shown in figure 6, the hoisting crossbeam 3 comprises a crossbeam main body 3-1, two upper lifting lugs 3-2 are fixed at the top of the crossbeam main body 3-1, the upper lifting lugs 3-2 are connected with shackles 3-4, the shackles 3-4 are used for being connected with a crane hook through a steel wire braiding sleeve or a hoisting belt, two lower lifting lugs 3-3 are fixed at the bottom of the crossbeam main body 3-1, a shackle group 3-5 is connected to the lower lifting lugs 3-3, and the shackle group 3-5 is used for being connected with a clamping pull rod 4.
As shown in fig. 7-11, the clamping pull rod 4 comprises a front pull rod 41 and a rear pull rod 42 which are symmetrically arranged for clamping the steel casting blank 1, the front pull rod 41 and the rear pull rod 42 both comprise a pull rod main body 4-3 and a reinforcing rib plate 4-2 arranged on the pull rod main body 4-3, the top parts of the front pull rod 41 and the rear pull rod 42 are connected with a connecting piece 4-4 through a connecting shaft 4-5, both ends of the connecting shaft 4-5 are locked through second nuts 4-1, the connecting piece 4-4 is connected with a shackle group 3-5 of the hoisting beam 3, the bottom parts of the front pull rod 41 and the rear pull rod 42 are both provided with pull rod bases 4-7, a bottom connecting plate 4-8 is arranged below the front pull rod 41 and the rear pull rod 42, the pull rod bases 4-7 of the front pull rod 41 and the rear pull rod 42 are fixed on the bottom connecting plate 4-8 through bolts 4-6, the bottom connecting plates 4-8 are used for placing the steel casting blank 1.
As shown in fig. 12 and 13, the steel plate clamp 5 comprises a steel plate clamp main body 5-4, a groove for clamping a steel casting blank 1 is formed in one side of the steel plate clamp main body 5-4, a handle 5-3 is arranged on the other side of the steel plate clamp main body 5-4, a steel plate clamp lifting lug 5-2 is arranged at the top of the steel plate clamp main body 5-4, the steel plate clamp lifting lug 5-2 is connected with a steel plate clamp shackle 5-1, and the steel plate clamp shackle 5-1 is used for being connected with a steel wire rope.
Fig. 12-14 are schematic views showing the hoisting of the steel billets from the horizontal state to the vertical state, the steel billets are generally stacked together in the horizontal state, and the steel billets clamped by the retaining device are in the vertical state, so the steel billets need to be hoisted. Two liang of a set of uses of steel sheet card is connected respectively at the wire rope both ends, is used for the card on the relative both sides of steel casting base during the use, and four points are blocked to two sets of four steel sheet cards altogether, lift the steel casting base to the assigned position. After the steel casting blank is placed, the shackle group between the clamping pull rod and the hoisting cross beam is disassembled, so that the hoisting cross beam is separated from the clamping pull rod. The clamping pull rods are transversely lifted through the plate cards to be sleeved on the steel casting blank, and the distance between the two clamping pull rods is the same as the distance between the lower lifting lugs of the hoisting cross beam. After the clamping pull rod is placed, the hoisting cross beam is connected with the clamping pull rod through the shackle assembly again, and the hoisting cross beam and the clamping pull rod are hoisted through the travelling crane, so that the steel casting blank is hoisted to be in a vertical state.
FIGS. 15 and 16 show the milling cutter after machining the surface of the steel cast ingot below the clamping position of the platen assembly, the platen assembly above the same support plate is removed and replaced under the milling cutter, and the platen assembly of the unprocessed surface 1-2 is pressed against the processed surface 1-1, thereby machining the unprocessed surface 1-2.
The machining method of the 9Ni steel cast blank surface machining equipment for the floor boring comprises the following specific steps:
when the machining process begins, two fixing devices on the left and right sides of a steel cast blank are installed on a floor type boring machine workbench, supporting plates of the fixing devices are located in the same vertical plane in a mode of positioning of a machine tool spindle, and after the fixing devices are adjusted, the fixing devices are tightly connected onto the workbench through a plurality of groups of screw rods and a pressing plate in a connecting mode, so that the fixing devices are prevented from displacing during working, and machining errors are further caused.
Processing begins, and two liang a set of uses of steel sheet card are connected respectively at the wire rope both ends, are used for the card on the relative both sides of steel casting base during the use, and four points are blocked to totally four sets of steel sheet cards, lift the steel casting base to the assigned position. And after the steel casting blank is placed, taking down the steel plate clamp, and disassembling the shackle group between the clamping pull rod and the hoisting cross beam to separate the hoisting cross beam from the clamping pull rod. The clamping pull rods are transversely lifted through the plate cards to be sleeved on the steel casting blank, and the distance between the two clamping pull rods is the same as the distance between the lower lifting lugs of the hoisting cross beam. After the clamping pull rod is placed, the hoisting cross beam is connected with the clamping pull rod through the shackle assembly again, and the hoisting cross beam and the clamping pull rod are hoisted through the travelling crane, so that the steel casting blank is hoisted until the steel casting blank is in a vertical state.
Hoisting the steel casting blank, enabling one side of the steel casting blank to contact a supporting plate of the retention device, after the left and right positions are adjusted, dropping the steel casting blank onto the cushion block, and at the moment, enabling the lower part of the steel casting blank to contact the cushion block and the rear part to contact the supporting plate; after the position of the steel cast blank is adjusted, the upper pressing plate assembly and the lower pressing plate assembly are used for clamping, the steel cast blank is firmly pressed on the supporting plate, namely on the fixing device, and finally the steel cast blank is pressed on the cushion block by screwing the pressing plate at the top end. At the moment, the steel casting blank is subjected to the cushion block supporting force, the transverse pressing force from the upper pressing plate assembly and the lower pressing plate assembly to the retention device and the pressing force from the top pressing plate to the cushion block, the moving freedom degree of the steel casting blank is fully limited, and the stability of the steel casting blank during processing is effectively ensured. And after the clamping is finished, the bolts at the bottom of the clamping pull rods are disassembled, so that the bottom connecting plates are disassembled, and then the front pull rods and the rear pull rods are hoisted, so that the surface of the steel casting blank is milled.
After one side of a steel cast blank is machined, the clamping pull rod is lifted through the hoisting cross beam, the front pull rod and the rear pull rod are separately placed on two sides of the steel cast blank and fall onto the bottom connecting plate, the pressing plate assembly of the retention device and the nut of the top pressing plate are unscrewed after the bolt is tightened, the steel cast blank is separated from the retention device, the hoisting device is further lifted, the steel cast blank is lifted away, a machined surface faces to a floor type boring and milling cutter after the rotation, and then the steel cast blank is clamped onto the retention device to be subjected to milling machining of the machined surface.
After the milling cutter processes the surface of the steel casting blank below the clamping position of the pressing plate assembly, the pressing plate assembly above the same supporting plate is disassembled and is changed into the position below the milling cutter, and the pressing plate assembly on the unprocessed surface is pressed on the processed surface, so that the unprocessed surface is processed, and no dead angle is guaranteed to be processed.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (7)
1. The 9Ni steel cast blank surface processing equipment for floor boring is characterized by comprising a clamping system, a hoisting system, steel plate clamps and plate cards which are matched for use, wherein the steel plate clamps are provided with an even number and are respectively clamped on two sides of a steel cast blank, and the steel plate clamps are connected with a steel wire rope and used for moving the horizontally placed steel cast blank to a specified position; the hoisting system comprises a plurality of hoisting cross beams and clamping pull rods which are matched for use, the board cards are uniformly distributed and clamped on one side of the clamping pull rods and can be connected with the steel wire rope for hoisting and sleeving the horizontally placed clamping pull rods on the steel casting blank; the hoisting cross beam is movably and detachably connected with the top of the clamping pull rod, the middle part of the clamping pull rod is added for clamping a steel casting blank, and the hoisting cross beam is matched with the clamping pull rod to hoist the steel casting blank in a vertical state to a clamping system; the clamping system is fixed on a machine tool workbench and used for clamping and fixing a steel casting blank so that a milling cutter on the workbench can process the steel casting blank.
2. The 9Ni steel casting blank surface processing equipment for the floor boring of claim 1, wherein the clamping system comprises two sets of symmetrically arranged retention devices, each retention device comprises a base, a vertical support, a pressure plate assembly, a support plate, reinforcing ribs, a lower workbench, an upper workbench and a railing, the base is fixed on the workbench of the machine tool, one end of the base is connected with the bottom of the vertical support, the other end of the base is connected with the top of the vertical support through the reinforcing ribs, the support plates are provided with two sets of pressure plate assemblies which are respectively fixed on the upper part and the lower part of the rear side of the vertical support, the pressure plate assemblies are fixed on the support plates, the pressure plate assemblies are used for fixing the steel casting blanks on the support plates, cushion blocks for supporting the steel casting blanks are arranged below the support plates, top pressure plates are arranged on the top of the vertical support, and the top pressure plates are fixed on the vertical support through matched top screw rods and top nuts, the vertical support is used for downwards pressing and fixing a steel casting blank on the cushion block, a lower workbench and an upper workbench are fixed on the base at the front side of the vertical support, and a railing is arranged on the upper workbench.
3. The 9Ni steel cast billet surface machining device for the floor boring of claim 2, wherein two sets of pressing plate assemblies are fixed on each set of supporting plate, each set of pressing plate assembly comprises two pressing plates for clamping the supporting plate and the steel cast billet, a screw rod is connected between the two pressing plates, one pressing plate is fixed on the supporting plate, a T-shaped block is fixed on the other pressing plate, the T-shaped block is used for fixing one end of the screw rod, and the other end of the screw rod penetrates through the pressing plate fixed on the supporting plate and then is screwed and fixed by a first nut.
4. The 9Ni steel casting blank surface machining equipment for floor boring of claim 1, wherein the hoisting beam comprises a beam main body, two upper lifting lugs are fixed at the top of the beam main body, each upper lifting lug is connected with a shackle, each shackle is used for being connected with a crane hook through a steel wire braiding sleeve or a hoisting belt, two lower lifting lugs are fixed at the bottom of the beam main body, each lower lifting lug is connected with a shackle group, and each shackle group is used for being connected with a clamping pull rod.
5. The 9Ni steel casting blank surface machining device for floor boring according to claim 4, wherein the clamping pull rod comprises a front pull rod and a rear pull rod which are symmetrically arranged for clamping a steel casting blank, the front pull rod and the rear pull rod both comprise a pull rod main body and reinforcing rib plates arranged on the pull rod main body, a connecting piece is connected between the tops of the front pull rod and the rear pull rod through a connecting shaft, the end of the connecting shaft is locked through a second nut, the connecting piece is connected with a shackle group of a hoisting cross beam, pull rod bases are arranged at the bottoms of the front pull rod and the rear pull rod, a bottom connecting plate is arranged below the front pull rod and the rear pull rod, the pull rod bases of the front pull rod and the rear pull rod are fixed on the bottom connecting plate through bolts, and the bottom connecting plate is used for placing the steel casting blank.
6. The floor boring 9Ni steel casting blank surface machining device of claim 1, wherein the steel plate clamp comprises a steel plate clamp body, a groove for clamping a steel casting blank is formed in one side of the steel plate clamp body, a handle is arranged on the other side of the steel plate clamp body, a steel plate clamp lifting lug is arranged at the top of the steel plate clamp body, a steel plate clamp shackle is connected to the steel plate clamp lifting lug, and the steel plate clamp shackle is used for being connected with a steel wire rope.
7. The surface machining apparatus of a 9Ni steel cast billet for a floor boring machine according to claim 2, characterized in that the machining method comprises the steps of:
1) placing the retention device in the clamping system on a boring and milling machine workbench, adjusting the working position, and tightly pressing and fixing the retention device on the working table surface of a machine tool;
2) the method comprises the following steps of (1) transferring stacked steel casting blanks to a specified position through a steel plate card, then dismantling the steel plate card, dismantling a clamping pull rod and a hoisting beam, sleeving the clamping pull rod on the steel casting blanks through the steel plate card, then connecting the clamping pull rod with the hoisting beam, hoisting the steel casting blanks from a horizontal state to a vertical state, and hoisting the steel casting blanks to the specified position of a clamping system;
3) mounting the steel casting blank on a retention device, screwing the fixed pressing plate assembly and the top pressing plate, and then removing the hoisting cross beam and the clamping pull rod;
4) the method comprises the following steps of (1) carrying out tool setting, carrying out milling processing on the surface of a steel cast blank, and processing the steel cast blank to a specified thickness, wherein the working position of a milling cutter is continuously measured and adjusted in the processing process due to the radian of the surface of the steel cast blank and inconsistent thickness;
5) adjusting the position of a pressing plate assembly in the steel casting blank processing process to ensure that a processing surface has no processing dead angle, installing a hoisting system after one surface is processed, simultaneously disassembling the pressing plate assembly and a top pressing plate, unloading, overturning and re-clamping a steel casting blank from a clamping system, and then processing the other surface;
6) and after the steel casting blank is processed, a hoisting system is installed, the processed steel casting blank is placed back to a horizontal state, and the next steel casting blank is processed through a steel plate clamp.
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