CN109746651A - A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams - Google Patents

A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams Download PDF

Info

Publication number
CN109746651A
CN109746651A CN201910203273.9A CN201910203273A CN109746651A CN 109746651 A CN109746651 A CN 109746651A CN 201910203273 A CN201910203273 A CN 201910203273A CN 109746651 A CN109746651 A CN 109746651A
Authority
CN
China
Prior art keywords
pin hole
boring machine
fraising
reaming
drill
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.)
Pending
Application number
CN201910203273.9A
Other languages
Chinese (zh)
Inventor
李光明
孙福山
王巍
杨长泳
李军
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.)
HADONG NATIONAL HYDROELECTRIC POWER EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH CENTRAL Co Ltd
Harbin Electric Machinery Co Ltd
Original Assignee
HADONG NATIONAL HYDROELECTRIC POWER EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH CENTRAL Co Ltd
Harbin Electric Machinery Co Ltd
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 HADONG NATIONAL HYDROELECTRIC POWER EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH CENTRAL Co Ltd, Harbin Electric Machinery Co Ltd filed Critical HADONG NATIONAL HYDROELECTRIC POWER EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH CENTRAL Co Ltd
Priority to CN201910203273.9A priority Critical patent/CN109746651A/en
Publication of CN109746651A publication Critical patent/CN109746651A/en
Pending legal-status Critical Current

Links

Abstract

The present invention discloses a kind of generator pit and end cap pin hole with the processing method that drills and reams.The big end cap of large turbo-type generator is fixed on out frame according to pre- screwde on after the centering of stator center position, and big end cap and out frame need to carry out accurately repeating positioning for the big end cap of later period demolition, installation with the Φ 24H7- Φ 30H7mm pin hole that drills and reams.The present invention solves only to carry out the big end cap of base with the pin hole that drills and reams with removable boring machine by magnetic force drill jig, and repeatability positioning precision is poor, bores, the problem of reamer tool stability difference.The present invention utilizes feed speed, the cutting rotational speeds parameter during removable boring machine " brill-expansion-hinge " pin hole processing using fixation, it solves to lead to that pin hole can not finally cut with scissors circle due to boring spindle center steering error is big because converting feed speed, cutting rotational speeds, by enchancement factor and by constantly amplifying pin hole size, or even the defect that concession uses;This method can be realized pin hole dimensional accuracy and reach interchangeability requirement, the complicated processes from matching pin according to pin hole in the past.

Description

A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams
Technical field
The present invention relates to a kind of generator pits and end cap pin hole with drill and ream processing method, especially large turbo-type generator The large size such as base and its big end cap assembly need to be with removable boring machine with the pin hole that drills and reams.
Background technique
After the completion of large turbo-type generator stator, rotor center can be with stator center one when finally installing for generator It causes (espespecially end bracket type bearing generator), needs to pre-install big end cap according to stator center, generally big end cap and generator are fixed at this time Son is needed with the pin hole that drills and reams, and reference for installation of the pin hole as big end cap is entirely limited it relative to the opposite of generator unit stator Position, and fill repeatedly convenient for the later period, tear big end cap open and guarantee its repetitive positioning accuracy.Since the figure of generator and tonnage are equal at this time The range of work for having exceeded the equipment such as drilling machine is typically chosen removable boring machine and directly carries out same drill and ream.
It generally moves boring machine using Φ 110 directly to carry out with the processing that drills and reams base and big end cap, generator two sides are big End cap is total to need to process four pin holes, and each pin hole is both needed to removable boring machine centering and fixation again, as shown in fig. 6, conventional Removable boring machine is with the pin hole process flow that drills and reams, wherein boring the size selection in just hole will cut according to what removable boring machine can bear It cuts power and institute's cutting workpiece material requirements is selected;Thick drilling operating process is segmented into one to three work step, thick every time to bore Hole borehole enlargement 4mm;Reaming procedure is segmented into one to three work step, each reaming borehole enlargement 2mm;General surplus when fraising It is 0.20-0.60mm.For example, boring Φ 30H7mm pin hole, 1, first thick drilling are divided to two work steps: boring just hole Φ 20mm- and be slightly drilled into Φ 24mm moves boring machine cutting rotational speeds 300r/min, feed speed 0.20mm/r;2, reaming, point three work steps: reaming Φ 26mm- reaming Φ 28mm- reaming Φ 29.4mm moves boring machine cutting rotational speeds 200r/min, feed speed 0.12mm/r;3, it cuts with scissors Hole Φ 30H7mm moves boring machine cutting rotational speeds 60r/min, feed speed 0.30mm/r.
Due in entire " brill-expansion-hinge " process, cutter bar of boring lathe and cutter are leant out apart from long, are easy processing Bending deformation is generated in the process, and repetitive positioning accuracy is poor;In addition, constantly converting removable boring spindle to finishing from roughing Cutting rotational speeds and cutting feed speed easily increase machine tool chief axis center steering error.Factors above seriously affects adding for pin hole Working medium amount, easily generation pin hole do not cut with scissors circle, and pin bore surface has the defects of ripple, roughness, circularity over tolerance, for this purpose, must not Do not expand pin hole size, by probability factor or even the use that must not stand fast, seriously affects the big end cap installation essence of later period generator Degree.Pin hole dimensional accuracy can not control in advance, need in fact with pin, under production efficiency is relatively low.
Interchangeability requirement is realized in order to control pin hole machined dimensional accuracy, is avoided according to pin hole with the numerous of processing pin Trivial technical process will propose a kind of generator pit and end cap pin hole with the processing method that drills and reams, using fixed machine tool chief axis cutting The machined parameters and magnetic force drill jig auxiliary positioning of revolving speed and feed speed are improved to large-scale assembly with drill and ream pin hole precision and life Produce efficiency.
Summary of the invention
The present invention provides a kind of generator pits and end cap pin hole with the processing method that drills and reams, and adds in order to control pin hole Work dimensional accuracy and realize interchangeability requirement, avoid according to pin hole with processing pin cumbersome technical process.The present invention is using such as Shown in Fig. 7, boring machine is moved always using main shaft cutting rotational speeds when final fraising and feed speed as entire " brill-expansion-hinge " Machining tool cutting parameter immobilizes, and realizes the purpose for fully controlling pin hole dimensional accuracy.The technical solution of the present invention is as follows:
1) boring machine (10) are moved and are placed in stator (5) needs with the pin hole side that drills and reams, are adjusted in removable boring machine (10) main shaft The heart is vertical with stator (5) end face, and it is fixed to move boring machine (10);
2) thick drill (7) are mounted on removable boring machine boring bar (11), position is got ready to knife according to scribing line;
3) the magnetic force drill jig (1) equipped with thick drilling drill bushing (2) is adsorbed on big end cap (6) and is adjusted according to tool setting position It is fixed, it moves boring machine (10) and slightly bores just hole, thick to bore just pore size Φ 15-20mm, thick drilling is divided into one to three work step, every time Aperture size expands 4mm;
4) removable boring machine (10) main shaft cutting rotational speeds, i.e. drill speed are set as hinge pin hole Shi Xuanyong when slightly drilling every time Fraising revolving speed, the fraising feed speed of removable boring machine (10) when feed speed selects hinge pin hole when thick drilling every time;
5) the thick drilling drill bushing of replacement is reamer drill bushing (3), and bit change-over is reaming bit (8), reaming sequence be divided into one to Three work steps, each borehole enlargement 2mm and more bit change and the drill bushing for being changed to corresponding aperture, aperture size is gradually close to final Size;
6) removable boring machine (10) main shaft cutting rotational speeds, i.e. drill speed are set as hinge pin Kong Shixuan when reaming is processed every time Fraising revolving speed, the fraising feed speed of removable boring machine (10) when feed speed selects hinge pin hole when each reaming is processed;
7) replacement reamer drill bushing is fraising drill bushing (4), and reaming bit is changed to reamer (9), and fraising processing capacity is 0.20- 0.60mm, fraising bottom outlet is determined by upper sequence reaming final size, moves the feed speed of boring machine (10) when fraising and main shaft is cut Cut revolving speed keeps fraising revolving speed and fraising feed speed initial value constant respectively;
8) detection processes the hole quality in hole with drilling and reaming, and checks the surface roughness and circular degree of pore-forming, the circumference of pore-forming Degree aperture difference in overall length is less than 0.02mm, surface roughness Ra3.2;
9) magnetic force drill jig (1) and removable boring machine (10) are removed, repeatedly 7) step 1) is to, processing remaining pin hole.
Technical effect: this to be assisted using magnetic force drill jig with the pin hole processing technology that drills and reams, easy to operate, raising positioning accuracy With the stability of processing;It drills and reams using the machined parameters progress of fixed machine tool chief axis cutting rotational speeds and feed speed is same, raising pair Large-scale assembly is the same as drill and ream pin hole precision and production efficiency.This method can effective control pin pore size precision, effectively avoid producing Raw pin hole does not cut with scissors circle, and pin bore surface has the defects of ripple, roughness, circularity over tolerance;It avoids pin hole size gradually amplifying increasing The method for adding fraising number to rely on probability factor, seriously affects the big end cap installation accuracy of later period generator.Make the pin processed Hole can avoid meeting interchangeability and actual installation required precision with processing pin in the margin of tolerance finally required, and Improve assembly efficiency.
Detailed description of the invention
Fig. 1 magnetic force drill jig is the same as the pin hole schematic diagram that drills and reams
Fig. 2 magnetic force drill jig is the same as the pin hole cross-sectional view that drills and reams
The thick drilling drill bushing schematic diagram of Fig. 3
Fig. 4 reamer drill bushing schematic diagram
Fig. 5 fraising drill bushing schematic diagram
Fig. 6 is conventional with the pin hole process flow chart that drills and reams
Fig. 7 present invention is the same as the pin hole process flow chart that drills and reams
Fig. 8 present invention is the same as the Φ 30H7mm pin hole process flow chart that drills and reams
Fig. 9 present invention is the same as the Φ 24H7mm pin hole process flow chart that drills and reams
Wherein: 1 magnetic force drill jig, 2 thick drilling drill bushings, 3 reamer drill bushings, 4 fraising drill bushings, 5 stators, 6 big end caps, 7 thick brills Drill, 8 reaming bits, 9 reamers, 10 removable boring machines, 11 removable boring machine boring bars
Specific embodiment:
A kind of generator pit and end cap pin hole with the processing method that drills and reams, can be used for the big end cap of large turbo-type generator according to Pre- screwde on is fixed on out frame after the centering of stator center position, and big end cap and out frame need to be carried out with the Φ that drills and reams 24H7- Φ 30H7mm pin hole, tonnage exceed general machine tooling range, assist same drill and ream with removable boring machine and magnetic force drill jig Pin hole, concrete technology method include:
Embodiment one: as shown in figure 8, as follows with the Φ 30H7mm pin hole specific implementation step that drills and reams: 1), as shown in Figure 1, can Moving boring machine 10 is placed in stator 5 and needs with the pin hole side that drills and reams, and removable 10 main-shaft core of boring machine of adjustment is vertical with 5 end face of stator, Removable boring machine 10 is fixed;2), as shown in figures 1 and 3, thick drill 7 is mounted on removable boring machine boring bar 11, according to drawing Line gets position ready to knife;3), as depicted in figs. 1 and 2, the magnetic force drill jig 1 equipped with thick drilling drill bushing 2 is adsorbed on big end cap 6 And adjusted and fixed according to tool setting position, it moves boring machine 10 and slightly bores just hole, thick to bore just pore size Φ 20mm, thick drilling is divided into two Work step: it bores just hole Φ 20mm- and is slightly drilled into Φ 24mm, each aperture size expands 4mm;4), as shown in figure 8, when slightly drilling every time Removable 10 main shaft cutting rotational speeds of boring machine, i.e. drill speed are set as the fraising revolving speed 60r/min selected when hinge pin hole, thick every time The fraising feed speed 0.30mm/r of boring machine 10 is moved when feed speed selects hinge pin hole when drilling;5), as shown in figure 4, more Changing thick drilling drill bushing is reamer drill bushing 3, and bit change-over is reaming bit 8, and reaming sequence is divided into three work steps: reaming Φ 26mm- Reaming Φ 28mm- reaming Φ 29.4mm, each borehole enlargement 2mm and more bit change and the drill bushing for being changed to corresponding aperture, aperture Size is gradually close to final size;6) 10 main shaft cutting rotational speeds of boring machine, are moved when as shown in figure 8, reaming being processed every time, that is, are bored Head revolving speed is set as the fraising revolving speed 60r/min selected when hinge pin hole, when feed speed selects hinge pin hole when each reaming is processed The fraising feed speed 0.30mm/r of removable boring machine 10;7), as shown in figure 5, replacement reamer drill bushing is fraising drill bushing 4, expand Drill is changed to Φ 30H7 reamer, and fraising processing capacity is 0.60mm, and the bottom outlet that reams is by upper sequence reaming final size Φ 29.4mm It determines, the feed speed and main shaft cutting rotational speeds of removable boring machine 10 keep ream revolving speed 60r/min and fraising respectively when fraising Feed speed 0.30mm/r initial value is constant;8), detection processes the hole quality in hole with drilling and reaming, check pore-forming surface roughness and Circular degree, the circular degree of pore-forming aperture difference in overall length are less than 0.02mm, surface roughness Ra3.2;9) magnetic drill, is removed Mould 1 and removable boring machine 10 repeat step 1) to 7), processing remaining pin hole.
Embodiment two: as shown in figure 9, as follows with the Φ 24H7mm pin hole specific implementation step that drills and reams: 1), as shown in Figure 1, can Moving boring machine 10 is placed in stator 5 and needs with the pin hole side that drills and reams, and removable 10 main-shaft core of boring machine of adjustment is vertical with 5 end face of stator, Removable boring machine 10 is fixed;2), as shown in figures 1 and 3, thick drill 7 is mounted on removable boring machine boring bar 11, according to drawing Line gets position ready to knife;3), as depicted in figs. 1 and 2, the magnetic force drill jig 1 equipped with thick drilling drill bushing 2 is adsorbed on big end cap 6 And adjusted and fixed according to tool setting position, it moves boring machine 10 and slightly bores just hole, it is thick to bore just pore size Φ 18mm;4), as shown in figure 9, Removable 10 main shaft cutting rotational speeds of boring machine, i.e. drill speed are set as the fraising revolving speed selected when hinge pin hole when thick drilling every time 20r/min moves the fraising feed speed 0.10mm/r of boring machine 10 when feed speed selects hinge pin hole when thick drilling every time; 5), as shown in figure 4, the thick drilling drill bushing of replacement is reamer drill bushing 3, bit change-over is reaming bit 8, and reaming sequence is divided into three works Step: reaming Φ 20mm- reaming Φ 22mm- reaming Φ 23.5mm, each borehole enlargement 2mm and more bit change be changed to corresponding aperture The drill bushing of diameter, aperture size is gradually close to final size;6), 10 main shaft of boring machine is moved when as shown in figure 9, reaming being processed every time Cutting rotational speeds, i.e. drill speed are set as the fraising revolving speed 20r/min selected when hinge pin hole, feed speed when each reaming is processed The fraising feed speed 0.10mm/r of boring machine 10 is moved when selecting hinge pin hole;7), as shown in figure 5, replacement reamer drill bushing is Ream drill bushing 4, and reaming bit is changed to Φ 24H7 reamer, and fraising processing capacity is 0.50mm, and fraising bottom outlet is final by upper sequence reaming Size Φ 23.5mm determines that the feed speed and main shaft cutting rotational speeds of removable boring machine 10 keep the revolving speed that reams respectively when fraising 20r/min and fraising feed speed 0.10mm/r initial value are constant;8), detection processes the hole quality in hole with drilling and reaming, and checks pore-forming Surface roughness and circular degree, the circular degree of pore-forming aperture difference in overall length be less than 0.02mm, surface roughness is Ra3.2;9) magnetic force drill jig 1 and removable boring machine 10, are removed, repeats step 1) to 7), processing remaining pin hole.
Finally, protection scope of the present invention is not limited to the above embodiments.Obviously, those skilled in the art can be right The present invention carries out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to this hair In the range of bright claim and its equivalent technologies, then the present invention is also intended to encompass including these changes and deformation.

Claims (1)

1. a kind of generator pit and the same processing method that drills and reams of end cap pin hole, it is characterized in that:
Include the following steps:
1) boring machine (10) moved be placed in stator (5) and need with drilling and reaming pin hole side, adjust removable boring machine (10) main-shaft core with Stator (5) end face is vertical, and it is fixed to move boring machine (10);
2) thick drill (7) are mounted on removable boring machine boring bar (11), position is got ready to knife according to scribing line;
3) the magnetic force drill jig (1) equipped with thick drilling drill bushing (2) is adsorbed on big end cap (6) and is adjusted according to tool setting position solid It is fixed, it moves boring machine (10) and slightly bores just hole, thick to bore just pore size Φ 15-20mm, thick drilling is divided into one to three work step, every secondary aperture Diameter dimension enlargement 4mm;
4) removable boring machine (10) main shaft cutting rotational speeds, i.e. drill speed are set as the hinge selected when hinge pin hole when slightly drilling every time Hole revolving speed, the fraising feed speed of removable boring machine (10) when feed speed selects hinge pin hole when thick drilling every time;
5) the thick drilling drill bushing of replacement is reamer drill bushing (3), and bit change-over is reaming bit (8), and reaming sequence is divided into one to three Work step, each borehole enlargement 2mm and more bit change and the drill bushing for being changed to corresponding aperture, aperture size is gradually close to final ruler It is very little;
6) every time reaming processing when removable boring machine (10) main shaft cutting rotational speeds, i.e. drill speed is set as selecting when hinge pin hole Ream revolving speed, the fraising feed speed of removable boring machine (10) when feed speed selects hinge pin hole when each reaming is processed;
7) replacement reamer drill bushing is fraising drill bushing (4), and reaming bit is changed to reamer (9), and fraising processing capacity is 0.20- 0.60mm, fraising bottom outlet is determined by upper sequence reaming final size, moves the feed speed of boring machine (10) when fraising and main shaft is cut Cut revolving speed keeps fraising revolving speed and fraising feed speed initial value constant respectively;
8) detection processes the hole quality in hole with drilling and reaming, and checks the surface roughness and circular degree of pore-forming, the circular degree of pore-forming exists Aperture difference is less than 0.02mm, surface roughness Ra3.2 in overall length;
9) magnetic force drill jig (1) and removable boring machine (10) are removed, repeatedly 7) step 1) is to, processing remaining pin hole.
CN201910203273.9A 2019-03-18 2019-03-18 A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams Pending CN109746651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910203273.9A CN109746651A (en) 2019-03-18 2019-03-18 A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910203273.9A CN109746651A (en) 2019-03-18 2019-03-18 A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams

Publications (1)

Publication Number Publication Date
CN109746651A true CN109746651A (en) 2019-05-14

Family

ID=66408850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910203273.9A Pending CN109746651A (en) 2019-03-18 2019-03-18 A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams

Country Status (1)

Country Link
CN (1) CN109746651A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111318853A (en) * 2020-03-31 2020-06-23 中国航发动力股份有限公司 Machining method for improving flow precision of oil injection ring

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004017278A (en) * 2002-06-19 2004-01-22 Eiji Kitamura Device to prevent dispersion of chips
CN102744561A (en) * 2012-07-21 2012-10-24 西安煤矿机械有限公司 Deep hole machining process
CN102814524A (en) * 2012-08-15 2012-12-12 武汉船用机械有限责任公司 Hole distribution method and hole distribution device for circular structure
CN103551855A (en) * 2013-11-14 2014-02-05 上海中船三井造船柴油机有限公司 Method and device for simultaneous drilling and reaming processing of crankshaft and flywheel of marine low-speed diesel engine
CN103920901A (en) * 2014-03-17 2014-07-16 周鲲 Method used for punching metal upright
DE102013204955A1 (en) * 2013-03-20 2014-09-25 Gühring KG drilling
CN105234628A (en) * 2014-07-08 2016-01-13 四平市方向机械有限公司 Machining method for straight pin hole of knuckle
CN107052385A (en) * 2017-01-13 2017-08-18 柳州市龙晨车桥配件制造有限公司 A kind of accurate positioning drilling machine
CN109434381A (en) * 2018-11-05 2019-03-08 哈尔滨汽轮机厂有限责任公司 A kind of processing method in muffler hole

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004017278A (en) * 2002-06-19 2004-01-22 Eiji Kitamura Device to prevent dispersion of chips
CN102744561A (en) * 2012-07-21 2012-10-24 西安煤矿机械有限公司 Deep hole machining process
CN102814524A (en) * 2012-08-15 2012-12-12 武汉船用机械有限责任公司 Hole distribution method and hole distribution device for circular structure
DE102013204955A1 (en) * 2013-03-20 2014-09-25 Gühring KG drilling
CN103551855A (en) * 2013-11-14 2014-02-05 上海中船三井造船柴油机有限公司 Method and device for simultaneous drilling and reaming processing of crankshaft and flywheel of marine low-speed diesel engine
CN103920901A (en) * 2014-03-17 2014-07-16 周鲲 Method used for punching metal upright
CN105234628A (en) * 2014-07-08 2016-01-13 四平市方向机械有限公司 Machining method for straight pin hole of knuckle
CN107052385A (en) * 2017-01-13 2017-08-18 柳州市龙晨车桥配件制造有限公司 A kind of accurate positioning drilling machine
CN109434381A (en) * 2018-11-05 2019-03-08 哈尔滨汽轮机厂有限责任公司 A kind of processing method in muffler hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111318853A (en) * 2020-03-31 2020-06-23 中国航发动力股份有限公司 Machining method for improving flow precision of oil injection ring

Similar Documents

Publication Publication Date Title
CN102335756B (en) Milling and drilling and boring composite numerical control machine tool carriage and part processing method
CN101596608A (en) A kind of grooving cutter device that is used to process cannelure
CN201471151U (en) Multidirectional automated processing machine tool
CN109746651A (en) A kind of generator pit and end cap pin hole are the same as the processing method that drills and reams
CN204094158U (en) Multi-cutter machining tool
CN101254549A (en) Processing method of electric machine flange end cap and combined cutter
CN109604682B (en) High-precision conical surface deep hole machining process for large-scale shielding motor temperature sensor sleeve
CN201632661U (en) Integrated boring and turning tool
CN205816834U (en) A kind of compound tool
CN106425592B (en) A kind of skew wall drills the method for uniform deburring
CN201020631Y (en) Vibration cutting device
CN203030961U (en) Machine tool for elongated tapered holes
CN201455351U (en) Drilling and reaming sleeve template by using drilling machine to mechanically process boring holes of large workpiece
CN106694918A (en) Cutter for one-time clamping machining of concentric circular holes in two sides and design method and application thereof
CN109128723B (en) Method for machining V-shaped through lightening hole of crankshaft connecting rod neck
CN102198527B (en) Method for correcting eccentricity of drill type deep hole
CN102179559A (en) Spiral hole milling device for lathe and method thereof
CN202052975U (en) Spiral hole-milling device for lathe
CN213163240U (en) High-speed orifice chamfering tool for drilling machine
CN204182971U (en) Train shaft deep hole machining leads straight device
CN108296509A (en) A kind of steel construction machining process for through hole
CN214263935U (en) Rotary clamping mechanism applied to lathe long-rod turning tool
CN214867300U (en) Rotary arc machining tool rest of common lathe
CN111890052A (en) Special chamfering tool for multi-shaft deep hole machining tool
CN205967460U (en) Trilateral sword combination boring roller -head

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190514

WD01 Invention patent application deemed withdrawn after publication