CN111112963B - Machining method for self-elevating multifunctional service platform floating type gear box - Google Patents
Machining method for self-elevating multifunctional service platform floating type gear box Download PDFInfo
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- CN111112963B CN111112963B CN202010147070.5A CN202010147070A CN111112963B CN 111112963 B CN111112963 B CN 111112963B CN 202010147070 A CN202010147070 A CN 202010147070A CN 111112963 B CN111112963 B CN 111112963B
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- 238000003754 machining Methods 0.000 title claims abstract description 64
- 238000007667 floating Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003801 milling Methods 0.000 claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000010009 beating Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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Abstract
The invention provides a machining method of a self-elevating multifunctional service platform floating type gearbox, which comprises the following steps: the machining method comprises the steps of cylinder end face machining, positioning plate machining, motor mounting groove and secondary clamping datum plane machining, supporting round hole end face step face machining, boring machining, marking and scribing, motor groove width and fillet machining, floating type gear box bottom face and top face machining, secondary clamping and planer type milling machine machining. The present invention uses two machine tools with limited machining capacity. And under the condition that the floating type gearbox is horizontal relative to the machine tool, milling and boring a supporting round hole on one layer of the floating type gearbox, and machining a positioning reference surface. The floating type gear box contact surface is placed on the equal-height blocks on the planer type milling machine, the gantry machine is used for machining the wear-resisting plate clamping groove in a secondary clamping mode, the purpose that the floating type gear box with large size is machined by two machine tools with limited machining capacity is achieved, the requirement on the machining machine tool is lowered, and meanwhile production efficiency is improved through parallel machining.
Description
Technical Field
The invention relates to the field of ocean engineering equipment, in particular to a machining method of a self-elevating multifunctional service platform floating type gearbox.
Background
The self-elevating multifunctional service platform is mainly used for offshore oil field service, life support, wind power installation and the like. The platform mainly comprises pile shoes, pile legs, a main hull, a lifting tower, a living building, a helicopter deck and the like from bottom to top. The gear box is a key component which is positioned between the lifting towers and provides power for lifting the whole platform.
The self-elevating multifunctional service platform is provided with 4 elevating towers, each elevating tower is provided with 3 sets of gear boxes, and gears, motors, brake devices and the like are arranged in each set of gear boxes. The gear box is responsible for lifting the platform to a preset height so as to overcome the influence of severe marine environment on the platform, so that the gear box has strong lifting capacity so as to bear the weight of the whole platform structure, electromechanics, outfitting and the like. Meanwhile, the gear box must meet the installation requirements of devices such as gears, motors, brakes and the like. The normal and stable operation of the platform can be ensured. Therefore, in order to make the gear box meet the use requirement, the machining precision requirement of the gear box is very high.
Because the gear box is large in size, the whole gear box can not be machined almost, the whole machining resource is severely limited (resource and cost), and the transportation and other factors are severely limited due to the large size, so that a manufacturing plant is severely restricted, and another new process is urgently needed to break the limitation.
The main difficulties of the machining of the floating type gear box are as follows:
1. the support round holes relate to the problem of matching of a lifting motor gear and a pile leg rack, and therefore the front support round hole and the rear support round hole are concentric;
2. the supporting round holes relate to the matching problem among the gears of the lifting motor, so the center distance of the supporting round holes must be ensured;
3. the mounting end face of the supporting round hole relates to the matching problem of a lifting motor gear and a pile leg rack, so that the distance from the mounting end face of the supporting round hole to the center line of the clamping groove must be ensured;
4. the processing precision of secondary scribing and clamping positioning reference datum plane must be ensured to ensure the distance from the mounting end surface of the supporting circular hole to the central line of the clamping groove;
because the floating type gear box is bulky, the size of the floating type gear box reaches 3520mm (height), x2300mm (width) and x1200mm (depth), great requirements are provided for the processing stroke of a machining machine tool, and the conventional milling and boring machine in many shipyards cannot meet the requirement of one-time machining of the whole floating type gear box. The conventional floor type milling and boring machine can only process the supporting round hole, the motor mounting groove and the adjusting base plate at the bottom of the top of the gear box, and the processing of the wear-resisting plate fixing clamping groove on one side of the back of the gear box is still free, so that the secondary clamping can only be processed, and the secondary clamping processing faces two choices again:
firstly, rotating a gear box in situ by 180 degrees on an original milling and boring machine, and machining a clamping groove of an abrasion-resistant plate;
and secondly, placing the gear box into a planer type milling machine, and machining the clamping groove of the wear-resisting plate.
The first machining mode is more conventional, and the invention discusses the second machining mode.
Disclosure of Invention
In order to solve the defects, the invention aims to provide a machining method of a self-elevating multifunctional service platform floating type gear box by combining the characteristics of two types of existing machining equipment (a floor type milling and boring machine and a planer type milling machine). The invention provides a new processing technology, which utilizes two existing machining devices in a shipyard to process a gear box beyond the capability of the gear box, ensures the processing precision, completes the processing work, and can reduce the processing period by parallel operation.
In order to achieve the above object, the present invention provides a machining method for a floating gearbox of a self-elevating multifunctional service platform, the floating gearbox is different from a traditional self-elevating platform fixed type lifting device gearbox, the top and the bottom of the floating gearbox are not fixed with a hull structure, a plurality of groups of lifting motor supporting round holes are arranged in parallel in the height direction of the hull structure, and two groups of wear plate clamping grooves are arranged at the bottom of the top of the back side of the floating gearbox, the method comprises the following steps:
in a machine tool rotary platform pit, a supporting circular hole is laid down facing a machine tool, the front and rear total length parallelism of a workpiece is measured by a theodolite according to a waist line, the horizontal line of the workpiece is measured by a level meter, the verticality of two sides is measured by a suspension wire method, the workpiece is calibrated by using a jack and a drawing flower, the coincidence of a machining line and the waist line is ensured, and a measuring point is marked for facilitating the next calibration.
After the correction and the adjustment are finished, the angle steel is used for beating the support and the inclined strut, the workpiece is fixed on the platform and the ground, the crane loosens the hook, the correction and the adjustment method is repeated, whether the workpiece is deviated and changed due to the support of the angle steel is rechecked, the position where the workpiece is placed is marked, and meanwhile, the angle steel is used for being close to the workpiece in the front and at the back and on the locking side surface as a positioning reference, so that the next platform can be conveniently and quickly aligned.
After the machine tool detects the workpiece, a milling cutter disc is arranged on the main shaft, and a self-made large cutter disc is arranged on the ram and scrapes the end face of the supporting circular hole by a cutter leaning method to serve as a reference surface. And processing 6 supporting circular hole end faces at one time according to measured data, ensuring parallelism, serving as a gear box processing reference, ensuring that the central lines of 6-hole racks are consistent, and then cleaning 6 surfaces on the inner side of the milling bearing seat by using a milling cutter.
And (3) removing the milling cutter disc, installing a self-made small cutter disc, performing digital display by taking a waist line as a reference, performing machining by taking a middle hole as a reference and going to the lower part of right ➔, the upper part of left ➔, the upper part of left ➔ and the upper part of middle ➔, and roughly boring the inner diameter of the cylinder and the inner diameter of the bearing seat with a certain margin.
After the six holes are roughly bored, a white steel cutter is arranged on the large cutter head, and the positioning grooves with 6 holes are machined and formed by a cutter method, so that the size from the large surface to the inner side of the groove is ensured.
And further finely boring the inner diameter of the supporting round hole in place by using a large cutter head, and chamfering each hole according to the requirements of the drawing.
And (4) removing the large and small cutter heads, replacing the right-angle milling head, installing the milling cutter head, and processing the upper and lower adjusting base plates in place.
And (3) placing the gear box on a machined equal-height block, marking and positioning by utilizing the gear box, fixing the gear box after the adjustment is finished, installing a indexable groove milling cutter, and machining the top and the middle of the long groove in place. And replacing the indexable groove milling cutter, roughly milling the bottom of the groove and reserving certain finish machining allowance. And measuring the height of the added equal-height blocks from the working platform by using a cutter head, a digital display and a height gauge, and determining the position of the central line of the rack. The outer side is firstly processed and the inner side is processed by taking the central line as a reference, so that the groove width is ensured. And (4) finely milling the bottom of the single-side long groove and the dovetail groove according to the size of the central line of the original digital display pile leg.
The invention has the beneficial effects that: two machine tools (a floor type milling and boring machine and a planer type milling machine) with limited processing capacity are adopted, firstly, under the condition that the floating type gear box is horizontal relative to the machine tool, the supporting round holes on one layer of the floating type gear box are milled and bored according to the required space size among the supporting round holes of the same series, and a positioning reference surface is processed. After the process is finished, four equal-height blocks are fixedly installed on the workbench of the planer type milling machine, the equal-height blocks are milled at the same height, the contact surface of the floating type gear box is placed on the equal-height blocks, the clamping grooves of the wear-resisting plates face upwards, the horizontal and vertical positions of the gearbox are rechecked, secondary clamping is carried out, the clamping grooves of the wear-resisting plates are machined by utilizing the planer type milling machine, the purpose that two machine tools with limited machining capacity are used for machining the large-size floating type gear box is achieved, the requirements on machining machines are lowered, the production efficiency is improved due to parallel machining, and the machining period is shortened.
Drawings
FIG. 1 is a perspective view of the floating gearbox of the present invention.
Fig. 2 is a schematic view of the end face processing of the support circular hole in the present invention.
Fig. 3 is an enlarged schematic view of a point a in fig. 2.
Fig. 4 is a schematic view illustrating the positioning plate of the present invention.
Fig. 5 is an enlarged schematic view of B in fig. 4.
Fig. 6 is a schematic view of the motor mounting groove and the secondary clamping reference surface processing in the invention 1.
Fig. 7 is a schematic view of the motor mounting groove and the secondary clamping reference surface processing in the invention 2.
FIG. 8 is a schematic view of the step surface processing of the supporting circular hole of the present invention
Fig. 9 is an enlarged schematic view at C in fig. 8.
Fig. 10 is a sequence of support hole rough boring in the present invention.
FIG. 11 is a schematic view of the support circular hole fine boring in the present invention.
FIG. 12 is a schematic view of the motor mounting groove of the present invention.
FIG. 13 is a schematic view of the machining of the adjusting shim plate on the floating gearbox according to the present invention.
FIG. 14 is a schematic view of the machining of the adjusting shim plate under the floating gearbox in the present invention.
FIG. 15 is a state diagram of the planer type milling machine in the process of machining.
FIG. 16 is a schematic view of a planer type milling machine in the process of the present invention 1.
FIG. 17 is a schematic view of a planer type milling machine in the process of the present invention 2.
FIG. 18 is a schematic view of the planer milling machine processing of the present invention in process 3.
Wherein: 1. wear-resisting plate draw-in groove, 2, adjustment backing plate, 3, support round hole, 4, locating plate, 5, motor mounting groove, 6, floating gear box, 7, secondary clamping reference surface, 8, support round hole terminal surface, 9, planer type milling machine, 10, equal altitude piece, 11, workstation.
Detailed Description
The present invention will be described in further detail below with reference to examples and the accompanying drawings.
Referring to fig. 1, the name of each part of the floating type gear box 6 indicates that the machining method of the floating type gear box 6 includes the following steps:
first, cylinder end face machining
The main shaft of the machine tool measures the machining allowance from the central line of the rack to the end face of the supporting round hole 3, a phi 300 milling cutter disc is arranged on the main shaft, six end faces are machined at one time, and the design size is ensured
mm, and taking the end face of the supporting round hole 3 as a subsequent processing reference surface, as shown in fig. 2 and 3;
second, processing of positioning plate 4
With the end face of the supporting circular hole 3 as a reference, detecting the machining amount of the middle positioning plate 4 according to digital display and a depth gauge, and machining the positioning plate 4 to the size of 24.5mm required by the drawing, as shown in fig. 4 and 5;
thirdly, processing the motor mounting groove 5 and the secondary clamping reference surface 7
And moving the main shaft backwards, and processing a motor mounting groove 5 and a secondary clamping reference surface 7 by taking the end surface of the supporting round hole 3 as a reference, wherein the distances between the main shaft and the end surface of the supporting round hole 3 are respectively 45mm and 100 mm. During plane milling, attention is paid to one-time forming, and the secondary clamping reference surface 7 is used as a reference surface for subsequently processing the wear plate clamping groove 1, as shown in fig. 6 and 7;
fourthly, processing the stepped surface of the end surface of the supporting round hole 3
Removing the milling cutter disc, replacing the self-made boring cutter disc, machining a six-hole step surface phi 600x2mm by using a tool leaning method with the end face of the supporting circular hole 3 as a reference, and performing digital display control and depth dimension inspection to ensure that the six-hole step surface is consistent and the distance to the center line of the rack is mm, as shown in fig. 8 and 9;
fifth, boring
Processing six holes according to the sequence of 4-6-2-5-3-1, ensuring the hole pitch to be 879.5mm and the size of 995 +/-1 mm, as shown in figure 10;
further, roughly and finely boring phi
、φ
And inverted 2x15 ° and 5x15 ° transition angles, as shown in fig. 11;
sixth, marking and scribing
And (3) removing the cutter head, replacing the drill chuck, marking the six-hole return round points (re-proofing and punching) respectively to be used as a positioning reference during shipboard installation, copying the horizontal line to two sides, and proofing and punching to facilitate alignment, correction and adjustment in the next procedure.
Seventh, motor slot width and 37.5xR16 fillet machining
The side fixed cutter arbor is changed, in the installation in 40-in 50mm main milling cutter, according to the digital display table check hole center of beating. Respectively milling two sides of the motor mounting groove 5 in the seam
And (5) mm size. The special ball-end milling cutter for the middle shaft 32 is replaced, and the sizes of 37.5xR16 on the two sides of the bottom of the groove are respectively machined in place. Then, replacing a milling cutter with 32 taper shank in the home-made shaft, and connecting the milling cutter with a machining inclination of 15-R16 degrees, as shown in FIG. 12;
eighth, floating type gear box 6 bottom and top surface processing
Demolish milling cutter, installation right angle milling head, 300 milling cutter dishes in the installation, detect number 1, 5 downthehole limits to floating gear box 6 at the bottom, the top face 485 size with 1m slide caliper (binding a standard detection stick at a card foot head) to process and target in place. Ensuring roughness and parallelism. After the whole reverse side of the floating type gearbox 6 is machined, transferring to a gantry mill for the next procedure, as shown in figures 13 and 14;
ninth, secondary clamping
And (3) installing and fixing self-made four equal-height blocks 10 of 50x350x460 at the front side and the rear side of a gantry milling workbench 11 according to the motor groove space at the two ends of a floating type gear box 6. The floating type gear box 6 is lifted and hung by a forklift and a crane, is downwards arranged on the equal-height block 10 by taking the secondary clamping reference surface 7 as a reference. The straightness of the workpiece is adjusted by utilizing the center line of the workpiece, the 11 grooves of the workbench, lifting lugs on two sides, a broaching flower, a small jack, a magnet dial indicator and other tools fixed on a main shaft of the machine tool to find the inner side edge of the single-side three-hole. Checking horizontal lines at two ends by using a height gauge to ensure that clamping reference lines at two sides are superposed as shown in figure 15;
after alignment, the workpieces are fixed by self-made bolts and pressing plates at six holes and two ends, and the positioning plates 4 are arranged on the working platforms at the inner sides of the motor grooves at the two ends, so that the workpieces at the back can be conveniently aligned for use.
Tenth, planer type milling machine 9 processing
And a dial indicator is arranged on the main shaft of the machine tool, and the inner sides of the upper and lower groups of holes are found by digital display rotation to determine the center line of the pile leg. The mounting shaft 250 can rotate the slot milling cutter, and the single-side size of 538mm at the top of the long slot is 269mm and the single-side size of the middle part 627 is 313.5mm respectively, which are in place as shown in fig. 16;
further, change in 200 can shift groove milling cutter, roughly mill unilateral size of tank bottom 672
measuring at the mm position by using a steel ruler or a measuring tape, and reserving a finish machining allowance of 1-2 mm as shown in figure 17;
further, the height dimension of the contour block 10 added from the working platform is measured by a cutter head, a digital display and a height gauge, and the position of the center line 765mm of the rack is determined. Using the central line as a reference, firstly processing the two outer sides
The dimension is up to mm, the inner side is processed by 100mm, and the groove width is ensured
mm tolerance;
further, root ofAccording to the original digital display pile leg central line size, finish milling the bottom of the single-side long groove
mm and R1.5 and dovetail groove depth height 37. Ensuring one side
The width of the clamping groove is mm, and the bottoms of the upper clamping groove and the lower clamping groove are ensured
mm and 3.2 of roughness, self-checking and mutual-checking on a machine tool, discharging the qualified workpiece from the machine tool, and finishing the whole machining of the floating type gearbox 6 as shown in figure 18.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (3)
1. The utility model provides a machining method of self-elevating multifunctional service platform floating gear box, floating gear box's top and bottom not fixed with hull structure, floating gear box multiunit elevator motor that has arranged side by side in the direction of height support the round hole, floating gear box dorsal part top bottom have two sets of antifriction plate draw-in grooves, its characterized in that includes following step:
a, processing the end surface of a cylinder: milling a first machining surface under the condition that the floating type gearbox is horizontal relative to a machine tool, wherein the first machining surface comprises all end surfaces of a motor supporting circular hole and the end surfaces of positioning plates, and the end surfaces of the supporting circular hole are used as reference surfaces for subsequent machining;
b, processing a positioning plate: milling the plane of the positioning plate by taking the end face of the motor supporting circular hole as a reference;
c, processing a motor mounting groove and a secondary clamping datum plane: moving the main shaft backwards, processing a motor mounting groove and a secondary clamping reference surface by taking the end face of the motor supporting circular hole as a reference, and using the secondary clamping reference surface as a clamping groove reference surface for subsequently processing the wear-resisting plate;
d, processing a stepped surface of the end face of the supporting circular hole: processing a stepped surface of the end face of the supporting circular hole by a tool leaning method by taking the end face of the supporting circular hole of the motor as a reference;
e, boring: under the condition that the floating type gear box is vertical relative to the machine tool, all supporting circular holes are bored according to box body marks;
f, marking and scribing: respectively marking the supporting round holes as round points to serve as positioning references during shipboard installation, copying horizontal lines to two sides, and punching the horizontal lines to facilitate alignment and adjustment in the next process;
g, processing the width and the fillet of the motor groove;
h, processing the bottom surface and the top surface of the floating type gear box;
i, secondary clamping: four equal-height block leveling gear boxes self-made on a gantry milling worktable are utilized for parallel processing, so that the processing period is shortened;
and j, machining by using a planer type milling machine.
2. The method of machining a self-elevating multi-function service platform floating gearbox of claim 1, wherein: firstly, calibrating and adjusting at the beginning of the step a, wherein the calibrating and adjusting comprises the following steps: in a machine tool rotary platform pit, enabling a supporting circular hole to face a machine tool to lie down, measuring the parallelism of the front and rear total lengths of a workpiece by a theodolite according to a waist line, measuring the horizontal line of the workpiece by a level gauge, measuring the verticality difference of two sides of the workpiece by a wire hanging method, calibrating and adjusting the workpiece by using a jack and a drawing flower, ensuring that a machining line is coincident with the waist line, and marking a measuring point for facilitating the next calibration and adjustment; after the correction and the adjustment are finished, the angle steel is used for beating the support and the inclined strut, the workpiece is fixed on the platform and the ground, the crane loosens the hook, the correction and the adjustment method is repeated, whether the workpiece is deviated and changed due to the welding of the angle steel support is rechecked, the position where the workpiece is placed is marked, and meanwhile, the angle steel is used for leaning against the workpiece on the front side, the back side and the locking side as a positioning reference, so that the next platform can be conveniently and quickly aligned; and then the cylindrical end face machining of the step a is carried out.
3. The method of machining a self-elevating multi-function service platform floating gearbox of claim 1, wherein: in the step a, a milling cutter disc is arranged on a main shaft, a self-made large cutter disc is arranged on a ram, the end faces of supporting circular holes are scraped by a cutter leaning method and are used as reference faces, 6 supporting circular hole end faces are machined at one time, parallelism is guaranteed, the center lines of 6 hole racks are ensured to be consistent as the machining reference of a gearbox body, and then the milling cutter disc is used for milling and cleaning 6 faces on the inner side of a bearing seat.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931512A (en) * | 2006-10-09 | 2007-03-21 | 无锡压缩机股份有限公司 | Making process of gear box casing for centrifugal compressor |
| CN101780626A (en) * | 2010-01-08 | 2010-07-21 | 招商局重工(深圳)有限公司 | Machining method of drilling platform lifting tower |
| CN104227346A (en) * | 2014-08-22 | 2014-12-24 | 南通力科机床制造有限公司 | Machining process for workbench base of knee type milling machine |
| CN107984166A (en) * | 2017-11-01 | 2018-05-04 | 沈阳透平机械股份有限公司 | The abdominal cavity processing method of horizonally split formula centrifugal compressor casing |
| CN110181229A (en) * | 2019-05-25 | 2019-08-30 | 招商局重工（江苏）有限公司 | A kind of manufacturing method of ship and offshore equipment middle gear case |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3547417B2 (en) * | 2001-10-23 | 2004-07-28 | 石川ガスケット株式会社 | Metal gasket |
-
2020
- 2020-03-05 CN CN202010147070.5A patent/CN111112963B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931512A (en) * | 2006-10-09 | 2007-03-21 | 无锡压缩机股份有限公司 | Making process of gear box casing for centrifugal compressor |
| CN101780626A (en) * | 2010-01-08 | 2010-07-21 | 招商局重工(深圳)有限公司 | Machining method of drilling platform lifting tower |
| CN104227346A (en) * | 2014-08-22 | 2014-12-24 | 南通力科机床制造有限公司 | Machining process for workbench base of knee type milling machine |
| CN107984166A (en) * | 2017-11-01 | 2018-05-04 | 沈阳透平机械股份有限公司 | The abdominal cavity processing method of horizonally split formula centrifugal compressor casing |
| CN110181229A (en) * | 2019-05-25 | 2019-08-30 | 招商局重工（江苏）有限公司 | A kind of manufacturing method of ship and offshore equipment middle gear case |
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Effective date of registration: 20231213 Address after: 226100 room 2, No.1, Xin'anjiang Road, Binjiang street, Haimen District, Nantong City, Jiangsu Province Patentee after: China Merchants Bureau Cruise Manufacturing Co.,Ltd. Patentee after: China Merchants Jinling shipping (Jiangsu) Co.,Ltd. Address before: No.2261, Haimen street, Nantong City, Jiangsu Province Patentee before: China Merchants Bureau Cruise Manufacturing Co.,Ltd. |