GB1574421A - Method and apparatus for locating a hub on a shaft - Google Patents

Method and apparatus for locating a hub on a shaft Download PDF

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Publication number
GB1574421A
GB1574421A GB4803/76A GB480376A GB1574421A GB 1574421 A GB1574421 A GB 1574421A GB 4803/76 A GB4803/76 A GB 4803/76A GB 480376 A GB480376 A GB 480376A GB 1574421 A GB1574421 A GB 1574421A
Authority
GB
United Kingdom
Prior art keywords
hub
shaft
bore
ground face
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4803/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Packaging UK Ltd
Original Assignee
Metal Box PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metal Box PLC filed Critical Metal Box PLC
Priority to GB4803/76A priority Critical patent/GB1574421A/en
Priority to SE7700513A priority patent/SE428893B/en
Priority to NL7700867A priority patent/NL7700867A/en
Priority to FR7702226A priority patent/FR2340170A1/en
Priority to CH114577A priority patent/CH611199A5/en
Priority to BE174525A priority patent/BE850927A/en
Priority to JP984077A priority patent/JPS5297067A/en
Priority to FI770382A priority patent/FI770382A/fi
Priority to DE19772704531 priority patent/DE2704531A1/en
Priority to IT19941/77A priority patent/IT1085913B/en
Priority to DK49477A priority patent/DK144435C/en
Priority to ES455652A priority patent/ES455652A1/en
Priority to NO770370A priority patent/NO143240C/en
Publication of GB1574421A publication Critical patent/GB1574421A/en
Priority to JP1985155810U priority patent/JPS6185312U/ja
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/005—Adjusting the position of the cutting members
    • B23D35/007—Adjusting the position of the cutting members for circular cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2657—Auxiliary carriages for moving the tool holders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Shearing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
  • Automatic Assembly (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

(54) METHOD & APPARATUS FOR LOCATING A Hn3 ON A SHAFT (71) We, METAL BOX LIMITED, of Queens House, Forbury Road, Reading RG1 3JH, Berkshire, a British Company, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to hubs for mounting a rotary element on a shaft, to the combination of such shaft with such hubs, and to methods of adjusting the location of a hub on a shaft. In one typical but nonlimiting application the invention relates to the location of a hub which carries a cutter on the shaft of a rotary slitting machine for slitting thin metal sheets.
Various expedients for fixing hubs on shafts are known, such as the provision of split hubs having clamping bolts and hubs having grub screws which move inwardly to engage with the shaft. However, the asymmetrical reaction forces arising from such arrangements tend to distort the hub.
This invention provides a hub for holding a cutting ring on the shaft of a slitting machine, said hub being of a kind having an axial bore which includes a radial inlet hole, an annular groove extending from the inlet hole around the bore and a helical groove extending along the bore from the annular groove, to terminate before the end of the axial bore, characterised in that, the hub has a ground face extending perpendicular to the axis of the axial bore and a cylindrical portion extending outwardly and axially from the ground face, said cylindrical portion having an inner surface continuous with the axial bore of the hub and an outer surface adapted to guide a cutting ring to engage with the ground face, said axial bore being of a diameter such that introduction of fluid under pressure between the hub and shaft expands the hub radially to permit movement of the hub along the shaft. In one embodiment, the helical groove terminates before reaching the inner surface of the cylindrical portion and the inner surface of the cylindrical portion is adapted to be an interference fit on the shaft of the slitting machine.
In another embodiment of the hub a cutting ring surrounds the cylindrical portion and is attached to the ground face of the hub. The cutting ring may be of a carbide material.
The invention further provides the hub when mounted on the shaft of the slitting machine.
One embodiment of the invention will now be described, by way of example, and with reference to the accompanying drawings, in which: Fig. 1 is a side elevation of a hub according to the invention, in section on line A-A' of Fig. 2; Fig. 2 is an end elevation of the hub of Fig. 1; Fig. 3 is a side elevation of part of a pair of shafts in a rotary slitting machine; and Fig. 4 is a diagrammatic sketch of a shaft and hubs according to the invention, together with apparatus for setting the hubs on the shaft.
In a typical can making operation a sheet of tinplate of the order of 1 metre long by 1 metre wide is passed between the rotating shafts 1, 2 of a slitting machine or slitter (part of which is indicated at 37 in Fig. 3), so that each pair of cutters progressively cuts a strip from a sheet. The slitter itself may be of any known type and need not be described here since the remainder of the machine will be such as is well known to those familiar with the art.
The pair of cutters 3, 4 are used to trim the edge of the sheet (not shown) and further pairs of cutters, such as those denoted at 5, 6, are located along the shaft at a distance equal to the width of the strips to be cut from the sheet. The sheet is pulled between the shafts 1 and 2, by rubber rollers such as those denoted 7 and 8.
In order that the cut edges of the strips produced shall be straight and burr free the, carbide cutting edges 9 and 10 of the cutters 3 and 4 respectively must in a plane perpendicular to the rotational axis of the shaft and axially located correctly with respect to each other. This is achieved by grinding the engaging faces of the cutters and the hubs flat before assembling them; the hub and cutter assemblies are then located on each shaft. The axial distance "D" between the cutting edges 9, 10 of the first pair of cutters 3, 4 and the cutting edges of the next pair of cutters 5, 6 represents the strip width to be produced, and this distance is adjusted by sliding the hub and cutter assemblies along the shaft. Successful adjustment of the location of the cutters on the shaft therefore depends on the hub not being detrimentally distorted.
In Figs. 1 and 2, the hub 11 comprises a substantially cylindrical body 13 having an axial bore 14 extending through it. The axis of the hole 14 is perpendicular to the ground face 15 of the right hand end of the body 13 as shown in Fig. 1. A cutter 3 (drawn dotted) has a ground face 16, which is held in engagement with the ground face 15 of the body 13, by means of studs (not shown) which screw into threaded holes in the body 13, one of which is denoted 17. Fitting of the cutter 3 to the body 13 is aided by a cylindrical portion 18 extending outwardly and axially from the ground face 15 of the body 13, which serves to centre the cutter 3 on the hub 11 before fixing. The edge of the cutter 3 is therefore made perpendicular to the axis of the hub and ready for fitting to a shaft, such as 1 in Fig. 3.
In the hub 11 of Figs. 1 and 2, a radial hole 19 located equidistant from the end faces 20, 21 of the body 13, pierces the cylindrical wall and leads into an annular groove 121 cut in the wall of the cylindrical bore 14. The radial hole 19 and groove 121 serve to lead oil under pressure into the hub when it is fitted on a shaft. Shallow helical grooves 22, 23 are adapted to lead such oil from the annular groove 121 in the axial direction away from the groove through the interface between the shaft 1 and hub 11. The shallow helical grooves terminate before reaching the ends of the axial bore to leave smooth portions 24, 25.
An outer portion of the radial hole 19 is provided with a screw thread 26 to receive the terminal union of a high pressure oil pipe used to deliver fluid to the hub under high pressure by suitable means and from a suitable source (shown in Fig. 4).
The bore 14 of the hub 11 in an interference fit on the shaft 1 and the hub is therefore fitted to the shaft in any known manner, such as by heating to expand it.
Thereafter, fluid under high pressure is introduced through the radial hole 19 into the annular groove 121 and shallow helical grooves 22, 23 to expand hub 11 so to lose the inteference and to create clearance between hub 11 and shaft 1 and permit adjustment of the axial location of the hub on the shaft. It will be appreciated that the fluid pressure acts evenly all round the hub and shaft interface so that asymmetric distortion of the hub is avoided and the entire periphery of the cutting edge of the cutter 16 remains substantially in a plane perpendicular to the axis of the shaft. Not only does the pressurised fluid control the fit between hub and shaft to permit movement of the hub on the shaft but also it acts as a lubricant further aiding precision of location.
In Fig. 4, the apparatus for carrying out the setting of the hub 11 on the shaft 1 comprises an air line 27, controlled by means 28, at about 80 p.s.i., a foot operated pressure intensifier 29 acting upon a supply of oil 30, and a high pressure oil pipe 31 having a terminal union to fit the radial bore 19 on the hub 11. Any known measuring means, such as the dial gauge and jig 32, may be used to measure the spacing of the cutters and adjustments may be made either with the shafts in situ on the slitting machine or outside it.
WHAT WE CLAIM IS: 1. A hub for holding a cutting ring on the shaft of a slitting machine, said hub being of a kind having an axial bore which includes a radial inlet hole, an annular groove extending from the inlet hole around the bore and a helical groove extending along the bore from the annular groove, to terminate before the end of the axial bore, characterised in that, the hub has a ground face extending perpendicular to the axis of the axial bore and a cylindrical portion extending outwardly and axially from the ground face, said cylindrical portion having an inner surface continuous with the axial bore of the hub and an outer surface adapted to guide a cutting ring to engage with the ground face, said axial bore being of a diameter such that introduction of fluid under pressure between the hub and shaft expands, the hub radially, to permit movement of the hub along the shaft.
2. A hub according to Claim 1 wherein the helical groove terminates before reaching the inner surface of the cylindrical portion and the inner surface of the cylindrical portion is adapted to be an inter
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. distance equal to the width of the strips to be cut from the sheet. The sheet is pulled between the shafts 1 and 2, by rubber rollers such as those denoted 7 and 8. In order that the cut edges of the strips produced shall be straight and burr free the, carbide cutting edges 9 and 10 of the cutters 3 and 4 respectively must in a plane perpendicular to the rotational axis of the shaft and axially located correctly with respect to each other. This is achieved by grinding the engaging faces of the cutters and the hubs flat before assembling them; the hub and cutter assemblies are then located on each shaft. The axial distance "D" between the cutting edges 9, 10 of the first pair of cutters 3, 4 and the cutting edges of the next pair of cutters 5, 6 represents the strip width to be produced, and this distance is adjusted by sliding the hub and cutter assemblies along the shaft. Successful adjustment of the location of the cutters on the shaft therefore depends on the hub not being detrimentally distorted. In Figs. 1 and 2, the hub 11 comprises a substantially cylindrical body 13 having an axial bore 14 extending through it. The axis of the hole 14 is perpendicular to the ground face 15 of the right hand end of the body 13 as shown in Fig. 1. A cutter 3 (drawn dotted) has a ground face 16, which is held in engagement with the ground face 15 of the body 13, by means of studs (not shown) which screw into threaded holes in the body 13, one of which is denoted 17. Fitting of the cutter 3 to the body 13 is aided by a cylindrical portion 18 extending outwardly and axially from the ground face 15 of the body 13, which serves to centre the cutter 3 on the hub 11 before fixing. The edge of the cutter 3 is therefore made perpendicular to the axis of the hub and ready for fitting to a shaft, such as 1 in Fig. 3. In the hub 11 of Figs. 1 and 2, a radial hole 19 located equidistant from the end faces 20, 21 of the body 13, pierces the cylindrical wall and leads into an annular groove 121 cut in the wall of the cylindrical bore 14. The radial hole 19 and groove 121 serve to lead oil under pressure into the hub when it is fitted on a shaft. Shallow helical grooves 22, 23 are adapted to lead such oil from the annular groove 121 in the axial direction away from the groove through the interface between the shaft 1 and hub 11. The shallow helical grooves terminate before reaching the ends of the axial bore to leave smooth portions 24, 25. An outer portion of the radial hole 19 is provided with a screw thread 26 to receive the terminal union of a high pressure oil pipe used to deliver fluid to the hub under high pressure by suitable means and from a suitable source (shown in Fig. 4). The bore 14 of the hub 11 in an interference fit on the shaft 1 and the hub is therefore fitted to the shaft in any known manner, such as by heating to expand it. Thereafter, fluid under high pressure is introduced through the radial hole 19 into the annular groove 121 and shallow helical grooves 22, 23 to expand hub 11 so to lose the inteference and to create clearance between hub 11 and shaft 1 and permit adjustment of the axial location of the hub on the shaft. It will be appreciated that the fluid pressure acts evenly all round the hub and shaft interface so that asymmetric distortion of the hub is avoided and the entire periphery of the cutting edge of the cutter 16 remains substantially in a plane perpendicular to the axis of the shaft. Not only does the pressurised fluid control the fit between hub and shaft to permit movement of the hub on the shaft but also it acts as a lubricant further aiding precision of location. In Fig. 4, the apparatus for carrying out the setting of the hub 11 on the shaft 1 comprises an air line 27, controlled by means 28, at about 80 p.s.i., a foot operated pressure intensifier 29 acting upon a supply of oil 30, and a high pressure oil pipe 31 having a terminal union to fit the radial bore 19 on the hub 11. Any known measuring means, such as the dial gauge and jig 32, may be used to measure the spacing of the cutters and adjustments may be made either with the shafts in situ on the slitting machine or outside it. WHAT WE CLAIM IS:
1. A hub for holding a cutting ring on the shaft of a slitting machine, said hub being of a kind having an axial bore which includes a radial inlet hole, an annular groove extending from the inlet hole around the bore and a helical groove extending along the bore from the annular groove, to terminate before the end of the axial bore, characterised in that, the hub has a ground face extending perpendicular to the axis of the axial bore and a cylindrical portion extending outwardly and axially from the ground face, said cylindrical portion having an inner surface continuous with the axial bore of the hub and an outer surface adapted to guide a cutting ring to engage with the ground face, said axial bore being of a diameter such that introduction of fluid under pressure between the hub and shaft expands, the hub radially, to permit movement of the hub along the shaft.
2. A hub according to Claim 1 wherein the helical groove terminates before reaching the inner surface of the cylindrical portion and the inner surface of the cylindrical portion is adapted to be an inter
ference fit on the shaft of the slitting machine.
3. A hub according to Claim 1 or Claim 2 having a cutting ring surrounding the cylindrical portion and attached to the ground face of the hub.
4. A hub according to any preceding Claim wherein the cutting ring is of a carbide material.
5. A hub according to any preceding Claim when mounted on the shaft of a slitting machine.
6. A hub, substantially as hereinbefore described with reference to Figs. 1 to 3 of the accompanying drawings.
7. A hub according to any preceding claim when mounted upon a shaft with an interference fit.
GB4803/76A 1976-02-06 1976-02-06 Method and apparatus for locating a hub on a shaft Expired GB1574421A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
GB4803/76A GB1574421A (en) 1976-02-06 1976-02-06 Method and apparatus for locating a hub on a shaft
SE7700513A SE428893B (en) 1976-02-06 1977-01-19 NAV FOR FIXING A CUTTING
NL7700867A NL7700867A (en) 1976-02-06 1977-01-27 A HUB FOR MOUNTING A ROTATING ELEMENT ON AN AXLE AND THE METHOD FOR FIXING IT ON AN AXLE.
FR7702226A FR2340170A1 (en) 1976-02-06 1977-01-27 POSITIONING A HUB, ESPECIALLY TOOL HOLDER, ON A SHAFT
CH114577A CH611199A5 (en) 1976-02-06 1977-01-31 Hub supporting a cutting tool and intended to be mounted on a shaft of a cutting-out machine
BE174525A BE850927A (en) 1976-02-06 1977-01-31 POSITIONING ON A SHAFT OF A HUB, ESPECIALLY TOOL HOLDER
JP984077A JPS5297067A (en) 1976-02-06 1977-02-02 Hub for mounting of rotary element on shaft* combination structure of the hub and shaft*and method of adjusting mounted position of the hub
FI770382A FI770382A (en) 1976-02-06 1977-02-03
DE19772704531 DE2704531A1 (en) 1976-02-06 1977-02-03 HUB
IT19941/77A IT1085913B (en) 1976-02-06 1977-02-03 PROCEDURE AND EQUIPMENT FOR MOUNTING A HUB ON A SHAFT IN POSITION
DK49477A DK144435C (en) 1976-02-06 1977-02-04 NAV FOR MAINTENANCE OF CUTTING ON A SHAFT MACHINE
ES455652A ES455652A1 (en) 1976-02-06 1977-02-04 Method and apparatus for locating a hub on a shaft
NO770370A NO143240C (en) 1976-02-06 1977-02-04 NAV FOR SUPPORTING A CUTTING ON THE SHAFT IN A CUTTING MACHINE
JP1985155810U JPS6185312U (en) 1976-02-06 1985-10-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4803/76A GB1574421A (en) 1976-02-06 1976-02-06 Method and apparatus for locating a hub on a shaft

Publications (1)

Publication Number Publication Date
GB1574421A true GB1574421A (en) 1980-09-10

Family

ID=9784108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4803/76A Expired GB1574421A (en) 1976-02-06 1976-02-06 Method and apparatus for locating a hub on a shaft

Country Status (13)

Country Link
JP (2) JPS5297067A (en)
BE (1) BE850927A (en)
CH (1) CH611199A5 (en)
DE (1) DE2704531A1 (en)
DK (1) DK144435C (en)
ES (1) ES455652A1 (en)
FI (1) FI770382A (en)
FR (1) FR2340170A1 (en)
GB (1) GB1574421A (en)
IT (1) IT1085913B (en)
NL (1) NL7700867A (en)
NO (1) NO143240C (en)
SE (1) SE428893B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133857A (en) * 1983-01-20 1984-08-01 Ingersoll Rand Co A method of loosening tightly-joined elements having releasing means
US4541163A (en) * 1984-04-23 1985-09-17 Precision Strip Technology, Inc. Hub starter fixture
US5044060A (en) * 1990-05-09 1991-09-03 John C. Eiting Method of moving a hydraulically expandable hub along a shaft
US5113735A (en) * 1991-04-23 1992-05-19 Alcan International Limited Slitting apparatus
CN111975287A (en) * 2020-07-23 2020-11-24 哈尔滨电气动力装备有限公司 Mounting process for hub cap of impeller of nuclear main pump
CN113369860A (en) * 2021-06-18 2021-09-10 广西玉柴机器股份有限公司 Guide tool for installing cylindrical pin of gear chamber cover

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58502138A (en) * 1981-12-17 1983-12-15 マヴアグ・マシ−ネンバウ・ア−ゲ− cutting tool equipment
JPS58149624U (en) * 1982-04-01 1983-10-07 日本エスケイエフ株式会社 Shaft part fixed cylindrical body
JPS58161231U (en) * 1982-04-22 1983-10-27 日本エスケイエフ株式会社 Assembly of shaft and cylindrical body for fixing shaft parts
DE3533739A1 (en) * 1985-09-21 1987-03-26 Goebel Gmbh Maschf SLIDING DEVICE
DE4230543A1 (en) * 1992-09-10 1994-03-17 Thaelmann Schwermaschbau Veb Disk shears for spiral cutting of wire bar with chamfered corners from tube - have flanges on shearing side of cutters with cutting angle less than 90 deg. to produce chamfer on opposite corners of bar
JP7166841B2 (en) * 2018-08-24 2022-11-08 イーグル工業株式会社 Pressure supply mechanism for hydraulic fitting hub

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE213421C (en) *
DE1991306U (en) * 1968-08-08 Karl Rud Dienes Fabrikationsgesellschaft fur Maschinen ersatzteile mbH, 5065 Vilkerath Roll cutting machine for sheet metal processing
DE938007C (en) * 1952-11-09 1956-01-19 Demag Ag Rolling mill roll
US3228102A (en) * 1963-10-21 1966-01-11 Dresser Ind Hydraulic assembly and disassembly of parts having a heavy interference fit
US3541910A (en) * 1968-08-28 1970-11-24 Heppenstall Co Cutter knives and methods of making the same
JPS5127508A (en) * 1974-08-29 1976-03-08 Suzuki Tanko Kk TAHATASEICHOGU

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133857A (en) * 1983-01-20 1984-08-01 Ingersoll Rand Co A method of loosening tightly-joined elements having releasing means
GB2166844A (en) * 1983-01-20 1986-05-14 Ingersoll Rand Co A method of loosening tightly-joined elements
US4541163A (en) * 1984-04-23 1985-09-17 Precision Strip Technology, Inc. Hub starter fixture
US5044060A (en) * 1990-05-09 1991-09-03 John C. Eiting Method of moving a hydraulically expandable hub along a shaft
WO1991017016A1 (en) * 1990-05-09 1991-11-14 Precision Strip Technology, Inc. Hydraulically expandable hub and method
US5113735A (en) * 1991-04-23 1992-05-19 Alcan International Limited Slitting apparatus
CN111975287A (en) * 2020-07-23 2020-11-24 哈尔滨电气动力装备有限公司 Mounting process for hub cap of impeller of nuclear main pump
CN113369860A (en) * 2021-06-18 2021-09-10 广西玉柴机器股份有限公司 Guide tool for installing cylindrical pin of gear chamber cover
CN113369860B (en) * 2021-06-18 2024-04-26 广西玉柴机器股份有限公司 Guide tool for mounting gear chamber cover cylindrical pin

Also Published As

Publication number Publication date
SE428893B (en) 1983-08-01
JPS5297067A (en) 1977-08-15
FR2340170A1 (en) 1977-09-02
NO143240B (en) 1980-09-22
NO770370L (en) 1977-08-09
FR2340170B3 (en) 1979-09-28
JPS6185312U (en) 1986-06-05
DE2704531A1 (en) 1977-08-11
NO143240C (en) 1981-01-02
BE850927A (en) 1977-05-16
DK49477A (en) 1977-08-07
IT1085913B (en) 1985-05-28
CH611199A5 (en) 1979-05-31
NL7700867A (en) 1977-08-09
DK144435C (en) 1982-08-16
ES455652A1 (en) 1978-01-01
FI770382A (en) 1977-08-07
DK144435B (en) 1982-03-08
SE7700513L (en) 1977-08-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee