CN201940643U - Numerical control boring lathe for crankshaft hole of cylinder body of automobile engine - Google Patents
Numerical control boring lathe for crankshaft hole of cylinder body of automobile engine Download PDFInfo
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- CN201940643U CN201940643U CN2011200613515U CN201120061351U CN201940643U CN 201940643 U CN201940643 U CN 201940643U CN 2011200613515 U CN2011200613515 U CN 2011200613515U CN 201120061351 U CN201120061351 U CN 201120061351U CN 201940643 U CN201940643 U CN 201940643U
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Abstract
The utility model discloses a numerical control boring lathe for a crankshaft hole of a cylinder body of an automobile engine. A movable worktable and a clamp system are arranged on a lathe body; the movable worktable is connected with a servo motor by a ball screw to produce feed motion; a main shaft box is arranged on the movable worktable; the motor drives a main shaft arranged on the main shaft box to rotate by a belt transmission system; the main shaft is connected with a boring tool bar of a boring system and drives the boring tool bar to rotate; the clamp system comprises a base of a clamp, a cross beam of the clamp, a bearing plate, a lifting mechanism, a positioning system, a clamping system and a tool lifting mechanism; an ejector rod of the lifting mechanism reciprocates up and down; the positioning system realizes the positioning by adopting two pins on one surface; the clamping system is used for clamping a workpiece during the machining; and the tool lifting mechanism enables a tool nose to get away from the surface of the workpiece when the tool retracts. When the lathe is adopted, the machining efficiency is improved to reach 1 piece/2.5min; moreover, the numerical control boring lathe has the advantages of high machining accuracy, good machining quality, energy conservation, environmental protection and high automation degree.
Description
Technical field
The utility model integrated application mechanical designing technique, pneumatics, sensing technology and control technology, the Precision Machining that relates to the automobile engine cylinder-body crankshaft hole of all kinds of and all size, it comprises wet processing method, compound tool and the lathe of motor cylinder block crankshaft hole, can be used for the fine-bore processing of all kinds of automobile engine cylinder-body crankshaft holes.
Background technology
For auto parts and components, external advanced person's the control specific machine that all adopts carries out production and processing, and No. one time the clamping multistation is processed simultaneously, the working (machining) efficiency height, and superior product quality, interchangeability is strong, and energy resource consumption is low.Control specific machine is a kind of lathe that is specially adapted for specific component and certain working procedure processing, and forms in the automatic assembly line formula manufacturing system obligato lathe kind often.Special purpose machine tool has the advantage of high-efficient automatic, is the ideal equipment of mass production enterprise.Along with improvement of Manufacturing Technology, the popularizing of Numeric Control Technology, the numerical control development of special purpose machine tool is also very fast, and special purpose machine tool occupies certain proportion in production practices.According to the interrelated data introduction, the ratio that the Japanese special purpose machine tool output value accounts for Machine Tool reaches 8.8%; This numeral of China Taiwan Province reaches 6.9%; And China only is 0.67%.So in motorcycle component was made, the advanced control specific machine of development was a direction in the industry development.
The processing of automobile engine cylinder-body bimetallic crankshaft hole is the key that cylinder body is produced, and directly influences the service behaviour and the quality of engine.At present, domestic processing method and equipment fall behind, and can not satisfy high accuracy, high efficiency, large batch of production.Its main cause is backward relatively at the special plane research and development of product processing, does not form autonomous special plane research and development base and special plane and makes scale.The external equipment price of import is very expensive, about 2,900,000 yuans of the automobile engine cylinder-body bent axle numerical control bore hole lathe price of producing as German Green company.
Automobile is the major industry of China, occupies the huge market share, and exports countries and regions such as the U.S., Southeast Asia.But it is backward relatively that China's automobile, the auto parts and components that rub are made process technology, and especially equipment falls behind, the equipment that most of enterprises still adopt traditional processing method and fall behind, low, the poor product quality of production efficiency.The backwardness of its equipment technology can not satisfy that modern manufacturing industry is in enormous quantities, the requirement of high-quality part processing.Therefore, use modern mechanical designing technique, pneumatics, sensing technology and control technology etc. and constitute new integrated high efficiency, the high accuracy special purpose machine tool of electrical-mechanical, promote the equipment of auto parts and components processing, the development of automobile industry and the raising of technical merit are had important impetus.
Summary of the invention
The utility model is at motor cylinder block part crankshaft hole processing (as shown in Figure 1), for the processing of motor cylinder block part crankshaft hole provides a kind of high accuracy, high efficiency, safe and reliable processing method and numerical control bore hole lathe.
The cylinder body crankshaft hole numerical control bore hole lathe that the utility model provides, comprise lathe bed and machine tool control system, it is characterized in that: lathe bed is provided with travelling table and chucking appliance system, travelling table is connected with servomotor by ball screw, produces feed motion by the driven by servomotor travelling table; Travelling table is provided with main spindle box, and motor drives the main axis rotation that is arranged on the main spindle box by belt drive system, and main shaft is connected with the boring cutter bar of boring system, drives boring cutter bar and rotates; Chucking appliance system in order to the clamping cylinder body comprises clamp base, anchor clamps crossbeam, support plate, elevating mechanism, navigation system, clamping system and lifter, described elevating mechanism is made of lift cylinder, lift cylinder piston rod and push rod, and lift cylinder drives push rod by the lift cylinder piston rod and pumps; Described navigation system constitutes the plane and two pits location by right alignment pin, left alignment pin and workpiece tray; Described clamping system is made of anchor clamps guide post, clamping cylinder, clamping cylinder piston rod and clamp, clamping system is installed on the anchor clamps crossbeam, it is flexible to drive the clamping cylinder piston rod that is attached thereto when clamping cylinder operation, clamp cylinder piston rod and drive corresponding the moving up and down of clamp that is attached thereto, the anchor clamps guide post is guiding when the clamping cylinder piston rod is flexible; Described lifter is made of cutter lifting cylinder, cutter lifting cylinder piston rod, cutter lifting guide post and workpiece tray, the cutter lifting cylinder drives the cutter lifting cylinder piston rod that is attached thereto and moves up and down, the top of cutter lifting cylinder piston rod contacts with the workpiece tray or is connected, promoting the workpiece tray steadily moves under cutter lifting guide post guiding, when withdrawing, workpiece is lifted, make point of a knife leave surface of the work; Clamp base is provided with the boring system, and the boring system is made of boring cutter bar, left bushing, boring cutter and right bushing, and boring cutter bar is connected with main shaft, and main shaft drives the boring cutter that is installed on the boring cutter bar workpiece is carried out machining.
Further feature is: also comprise cooling and lubricating system, cooler bin, coolant pump, cooling tube, cooling fluid allocation block and coolant nozzle constitute cooling and lubricating system, coolant pump is imported the cooling fluid in the cooler bin in the cooling fluid allocation block by cooling tube, several coolant nozzle ejections below being arranged on the cooling fluid allocation block are cooled off, are lubricated the machining zone.
Described machine tool control system mainly comprises electrical control cabinet, numerical control operation panel, rotary encoder, position sensor, the guidance panel when numerical control operation panel is machine tooling; Rotary encoder is transported to the tach signal of machine tool chief axis in the electrical control cabinet, and position sensor is transported to the displacement signal of lifter in the electrical control cabinet.
Adopt the adapter sleeve that floats to be connected between main shaft and the boring cutter bar.
The utility model is provided with tool-relief mechanism, and point of a knife scratches surface of the work when avoiding withdrawing.When machining, tool-relief mechanism lifts 1mm ~ 2mm with boring cutter bar, makes point of a knife leave surface of the work, and then, travelling table drives boring cutter bar and withdraws from machining area.
The utility model spindle unit adopts extraordinary combination bearing, improves the rotating accuracy of main shaft, reduces end face, the circular runout of main shaft; Thermal stretching improves the stability of machining accuracy to the influence of machining accuracy when adopting automatic thermal compensation mechanism to eliminate main shaft work.
The utility model adopts the wet type processing mode, adopt cooling fluid that machining area is cooled off and lubricates in the process, improved process velocity, the speed of mainshaft reaches 1000r/min, and traditional dry-type processing mode, the speed of mainshaft is too high will to cause destructions such as cutter spring sword, the highest 500r/min that is no more than of the speed of mainshaft.Therefore, adopt wet type processing to improve working (machining) efficiency and product quality.
The utlity model has following advantage:
1. employing wet processing method, the speed of mainshaft reaches 1000r/min, has improved working (machining) efficiency, and its working (machining) efficiency reaches 1/2.5 minutes.
2. machining accuracy height, crankshaft hole and dowel hole coordinate precision are less than 0.02mm, and crankshaft hole circularity is 0.008mm.
3. crudy is good, and the crankshaft hole surface roughness reaches 0.8 μ m ~ 1.6 μ m.
4. energy-saving and environmental protection, the automaticity height.
5. the totally-enclosed protection of machine adopted before protective door is not closed, can not be processed, and has guaranteed that the workman carries out process operation under safe condition.
Description of drawings
Fig. 1-1, Fig. 1-2, Fig. 1-the 3rd, the motor cylinder block part drawing;
Fig. 2 is the utility model machine tool structure front view;
Fig. 3 is the utility model machine tool structure left view (B to);
Fig. 4 is the utility model machine tool structure vertical view (A to);
Fig. 5-1, Fig. 5 the-the 2nd, the utility model chucking appliance system structure chart;
Fig. 6 is the utility model boring system construction drawing.
Among Fig. 1: a-crankshaft hole, b-dowel hole.
Fig. 2,3,4,5, in 6: the 1-lathe bed, the protection of 2-lathe, the 3-servomotor, the 4-ball screw, the 5-travelling table, the 6-rotary encoder, the 7-belt drive system, the 8-motor, the 9-main spindle box, the 10-main shaft, the 11-adapter sleeve that floats, the 12-chucking appliance system, the 13-numerical control operation panel, the 14-position sensor, 15-releases cylinder, the 16-protective door, the 17-cooler bin, 18 coolant pumps, the 19-cooling tube, the 20-electrical control cabinet, the 21-clamp base, the right alignment pin of 22-, the 23-lift cylinder, 24-lift cylinder piston rod, the 25-push rod, 26-left side alignment pin, 27-boring system, 28-left limit piece, 29-anchor clamps crossbeam, 30-cooling fluid allocation block, the 31-coolant nozzle, 32-right limit piece, 33-clamps guide post, 34-clamps cylinder, 35-clamps cylinder piston rod, the 36-clamp, 37-workpiece installation position, the 38-work supporting block, 39-cutter lifting cylinder piston rod, 40-cutter lifting cylinder, the 41-support plate, 42-cutter lifting guide post, 43-workpiece tray, 44-workpiece machining position, the 45-boring cutter bar, 46-left side bushing, the 47-boring cutter, the right bushing of 48-.
The specific embodiment
The structure of automobile engine cylinder-body is shown in Fig. 1-1,1-2,1-3, and a is that crankshaft hole, the b of cylinder body adds the dowel hole that adopts man-hour, as a kind of known products, does not give unnecessary details at this.
The utility model automobile engine cylinder-body crankshaft hole numerical control Boring machine bed structure and operation principle are shown in Fig. 2,3,4,5,6.As shown in Figure 1, automobile engine cylinder-body crankshaft hole numerical control bore hole lathe, comprise lathe bed 1 and machine tool control system, travelling table 5 is installed on lathe bed 1, travelling table 5 is connected with servomotor 3 by ball screw 4, servomotor 3 drives travelling table 5 by ball screw 4 and moves, and forms the cutting feed system; Main spindle box 9 is installed on travelling table 5, motor 8 drives main shaft 10 rotations that are arranged on the main spindle box 9 by belt drive system 7, constitute the dynamical system of cutting, main shaft 10 is connected with the boring cutter bar 45 of boring system 27, drives boring cutter bar 45 and rotates the power that feeds that produces boring; On lathe bed 1, install and fix chucking appliance system 12, its structure as shown in Figure 5, comprise clamp base 21, anchor clamps crossbeam 29, support plate 41, elevating mechanism, navigation system, clamping system and lifter, elevating mechanism is made of lift cylinder 23, lift cylinder piston rod 24 and push rod 25, lift cylinder 23 drives push rod 25 by lift cylinder piston rod 24 and pumps, its purposes is when clamping workpiece, and the reciprocating motion by push rod 25 is with workpiece jack-up and fall; Navigation system constitutes plane and two pits location by right alignment pin 22, left alignment pin 26 and workpiece tray 43, and right alignment pin 22, left alignment pin 26 insert respectively among the dowel hole b of workpiece to be processed and locate; Clamping system is made of anchor clamps guide post 33, clamping cylinder 34, clamping cylinder piston rod 35 and clamp 36, clamping system is installed on the anchor clamps crossbeam 29, it is flexible to drive the clamping cylinder piston rod 35 that is attached thereto when clamping cylinder 34 work, clamp cylinder piston rod 35 and drive clamp 36 corresponding the moving up and down that are attached thereto, thereby be pressed on the workpiece to be processed, clamp cylinder piston rod 35 by anchor clamps guide post 33 guiding, thereby clamping cylinder piston rod 35, clamp 36 can steadily be moved; Lifter is made of cutter lifting cylinder 40, cutter lifting cylinder piston rod 39, cutter lifting guide post 42 and workpiece tray 43, cutter lifting cylinder 40 drives the cutter lifting cylinder piston rod 39 that is attached thereto and moves up and down, the top of cutter lifting cylinder piston rod 39 contacts with workpiece tray 43 or is connected, promoting workpiece tray 43 steadily moves under cutter lifting guide post 42 guiding, when its effect is withdrawing workpiece is lifted 1mm, make point of a knife leave surface of the work.
Cooling fluid allocation block 30 among cooler bin 17 among Fig. 4, coolant pump 18, cooling tube 19 and Fig. 5, coolant nozzle 31 constitute cooling and lubricating systems, coolant pump 18 is imported the cooling fluid in the cooler bin 17 in the cooling fluid allocation blocks 30 by cooling tube 19, through several coolant nozzle 31 ejections below being arranged on cooling fluid allocation block 30, its effect is to add man-hour, spray cutting fluid to machining area, machining area is cooled off and lubricates.
Described machine tool control system mainly comprises electrical control cabinet 20, numerical control operation panel 13, rotary encoder 6, position sensor 14, the guidance panel when numerical control operation panel 13 is machine tooling; Rotary encoder 6 is transported to the tach signal of machine tool chief axis in the electrical control cabinet 20, so that the speed of mainshaft is provided with and controls; Position sensor 14 is transported to the displacement signal of lifter in the electrical control cabinet 20, so that the console cutter position; The motion of travelling table adopts general travel switch to control.
Specifically add man-hour, workpiece is placed on the work supporting block 38 of workpiece installation position 37, workpiece is pushed the artificial or manipulator of workpiece machining position 44(), shut protective door 16, press the start key on the numerical control operation panel 13, the lathe follow procedure enters automatic mode, lift cylinder 23 drives push rod 25 and descends, workpiece is placed on the workpiece tray 43, while left and right sides alignment pin 26,22 insert the workpiece dowel hole, clamp cylinder 34 drive clamps 36 and move down clamping work pieces, and motor 8 is by 10 rotations of belt drive system 7 drive shaft, drive boring cutter bar 45 and carry out cutting movement, the 47 pairs of workpiece of boring cutter that are installed on the boring cutter bar 45 carry out machining.Simultaneously, servomotor 3 drives the feed motion that travelling table 5 is finished cutting.After machining, motor 8 braking, boring cutter 47 points of a knife up, cutter lifting cylinder 40 promotes cutter lifting pieces 43 and lifts about 1mm, makes finished surface leave point of a knife, servomotor 3 drives travelling tables 5 and retreats fast, boring cutter bar 45 withdraws from the workpiece crankshaft hole.Simultaneously, 43 declines of cutter lifting cylinder 40 drive workpiece trays reset; Lift cylinder 23 drives the height that push rod 25 rises to work supporting block 38, releases cylinder 15 workpiece is released, and protective door 16 is opened, and finishes a working cycles, and whole working cycles is finished under programme-control automatically.
Claims (4)
1. automobile engine cylinder-body crankshaft hole numerical control bore hole lathe, comprise lathe bed (1) and machine tool control system, it is characterized in that: lathe bed (1) is provided with travelling table (5) and chucking appliance system (12), travelling table (5) is connected with servomotor (3) by ball screw (4), drives travelling table (5) by servomotor (3) and produces feed motion; Travelling table (5) is provided with main spindle box (9), motor (8) drives main shaft (10) rotation that is arranged on the main spindle box (9) by belt drive system (7), main shaft (10) is connected with the boring cutter bar (45) of boring system (27), drives boring cutter bar (45) and rotates; Chucking appliance system (12) in order to the clamping cylinder body comprises clamp base (21), anchor clamps crossbeam (29), support plate (41), elevating mechanism, navigation system, clamping system and lifter, described elevating mechanism is made of lift cylinder (23), lift cylinder piston rod (24) and push rod (25), and lift cylinder (23) drives push rod (25) by lift cylinder piston rod (24) and pumps; Described navigation system constitutes the plane and two pits location by right alignment pin (22), left alignment pin (26) and workpiece tray (43); Described clamping system is made of anchor clamps guide post (33), clamping cylinder (34), clamping cylinder piston rod (35) and clamp (36), clamping system is installed on the anchor clamps crossbeam (29), it is flexible to drive the clamping cylinder piston rod (35) that is attached thereto when clamping cylinder (34) work, clamp cylinder piston rod (35) and drive corresponding the moving up and down of clamp (36) that is attached thereto, anchor clamps guide post (33) is guiding when clamping cylinder piston rod (35) is flexible; Described lifter is made of cutter lifting cylinder (40), cutter lifting cylinder piston rod (39), cutter lifting guide post (42) and workpiece tray (43), cutter lifting cylinder (40) drives the cutter lifting cylinder piston rod (39) that is attached thereto and moves up and down, the top of cutter lifting cylinder piston rod (39) contacts with workpiece tray (43) or is connected, promoting workpiece tray (43) steadily moves under cutter lifting guide post (42) guiding, when withdrawing, workpiece is lifted, make point of a knife leave surface of the work; Clamp base (21) is provided with boring system (27), boring system (27) is made of boring cutter bar (45), left bushing (46), boring cutter (47) and right bushing (48), boring cutter bar (45) is connected with main shaft (10), and main shaft (10) drives the boring cutter (47) that is installed on the boring cutter bar (45) workpiece is carried out machining.
2. automobile engine cylinder-body crankshaft hole numerical control bore hole lathe according to claim 1, it is characterized in that: also comprise cooling and lubricating system, cooler bin (17), coolant pump (18), cooling tube (19), cooling fluid allocation block (30) and coolant nozzle (31) constitute cooling and lubricating system, coolant pump (18) is imported the cooling fluid in the cooler bin (17) in the cooling fluid allocation block (30) by cooling tube (19), several coolant nozzles (31) ejection below being arranged on cooling fluid allocation block (30) is cooled off the machining zone, lubricated.
3. automobile engine cylinder-body crankshaft hole numerical control bore hole lathe according to claim 1 and 2, it is characterized in that: described machine tool control system mainly comprises electrical control cabinet (20), numerical control operation panel (13), rotary encoder (6), position sensor (14), the guidance panel of numerical control operation panel (13) when being machine tooling; Rotary encoder (6) is transported to the tach signal of machine tool chief axis in the electrical control cabinet (20), and position sensor (14) is transported to the displacement signal of lifter in the electrical control cabinet (20).
4. automobile engine cylinder-body crankshaft hole numerical control bore hole lathe according to claim 1 and 2 is characterized in that: adopt the adapter sleeve (11) that floats to be connected between main shaft (10) and the boring cutter bar (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200613515U CN201940643U (en) | 2011-03-10 | 2011-03-10 | Numerical control boring lathe for crankshaft hole of cylinder body of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200613515U CN201940643U (en) | 2011-03-10 | 2011-03-10 | Numerical control boring lathe for crankshaft hole of cylinder body of automobile engine |
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|---|---|
| CN201940643U true CN201940643U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200613515U Expired - Fee Related CN201940643U (en) | 2011-03-10 | 2011-03-10 | Numerical control boring lathe for crankshaft hole of cylinder body of automobile engine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506933A (en) * | 2011-10-23 | 2012-06-20 | 芜湖华峰汽车部件有限责任公司 | Inspection tool of automobile oil sump assembly |
| CN102528462A (en) * | 2012-03-07 | 2012-07-04 | 浙江大学台州研究院 | Automatic machining machine tool for four-station valve body |
| WO2013159630A1 (en) * | 2012-04-28 | 2013-10-31 | Shuai Jiayuan | Deep-hole cutter lifting lathe for automatically clamping workpiece without shutdown |
| CN105149643A (en) * | 2015-07-02 | 2015-12-16 | 贵州隆生机械制造有限公司 | Engine crankshaft hole boring machine and hole boring method thereof |
| CN105798644A (en) * | 2016-04-28 | 2016-07-27 | 芜湖隆鑫铸造有限公司 | Fixture for fine boring of spindle and camshaft holes in engine cylinder block |
| CN108790028A (en) * | 2018-05-29 | 2018-11-13 | 德马格塑料机械（宁波）有限公司 | A kind of double-station moveable platform applied to injection molding machine |
| CN108907265A (en) * | 2018-08-02 | 2018-11-30 | 湖北开明高新科技有限公司 | A kind of online boring machine for repairing large scale equipment bearing position |
| CN109093154A (en) * | 2018-09-26 | 2018-12-28 | 杭州恒立制造科技有限公司 | The processing method of pull rod bore hole |
| CN109465649A (en) * | 2018-12-28 | 2019-03-15 | 上汽通用五菱汽车股份有限公司 | A kind of elevation and subsidence regulating device of single pole double-acting piston hydraulic cylinder |
| CN111112682A (en) * | 2019-12-30 | 2020-05-08 | 绍兴市佳达机械制造有限公司 | Air compressor machine connecting rod oilhole processing equipment |
| CN113714837A (en) * | 2021-09-17 | 2021-11-30 | 银川市恒益达机械有限公司 | Engine cylinder block line boring clamp and line boring machine tool |
| CN114054793A (en) * | 2021-12-27 | 2022-02-18 | 黄秀芳 | Hoisting, positioning and lubricating structure of boring rod for machining high-precision frame hole of reciprocating pump |
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2011
- 2011-03-10 CN CN2011200613515U patent/CN201940643U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506933A (en) * | 2011-10-23 | 2012-06-20 | 芜湖华峰汽车部件有限责任公司 | Inspection tool of automobile oil sump assembly |
| CN102528462A (en) * | 2012-03-07 | 2012-07-04 | 浙江大学台州研究院 | Automatic machining machine tool for four-station valve body |
| WO2013159630A1 (en) * | 2012-04-28 | 2013-10-31 | Shuai Jiayuan | Deep-hole cutter lifting lathe for automatically clamping workpiece without shutdown |
| CN105149643A (en) * | 2015-07-02 | 2015-12-16 | 贵州隆生机械制造有限公司 | Engine crankshaft hole boring machine and hole boring method thereof |
| CN105798644A (en) * | 2016-04-28 | 2016-07-27 | 芜湖隆鑫铸造有限公司 | Fixture for fine boring of spindle and camshaft holes in engine cylinder block |
| CN108790028B (en) * | 2018-05-29 | 2024-01-09 | 德马格塑料机械（宁波）有限公司 | Duplex displacement movable workbench applied to injection molding machine |
| CN108790028A (en) * | 2018-05-29 | 2018-11-13 | 德马格塑料机械（宁波）有限公司 | A kind of double-station moveable platform applied to injection molding machine |
| CN108907265A (en) * | 2018-08-02 | 2018-11-30 | 湖北开明高新科技有限公司 | A kind of online boring machine for repairing large scale equipment bearing position |
| CN109093154A (en) * | 2018-09-26 | 2018-12-28 | 杭州恒立制造科技有限公司 | The processing method of pull rod bore hole |
| CN109465649A (en) * | 2018-12-28 | 2019-03-15 | 上汽通用五菱汽车股份有限公司 | A kind of elevation and subsidence regulating device of single pole double-acting piston hydraulic cylinder |
| CN111112682A (en) * | 2019-12-30 | 2020-05-08 | 绍兴市佳达机械制造有限公司 | Air compressor machine connecting rod oilhole processing equipment |
| CN111112682B (en) * | 2019-12-30 | 2020-12-08 | 绍兴市佳达机械制造有限公司 | Air compressor machine connecting rod oilhole processing equipment |
| CN113714837A (en) * | 2021-09-17 | 2021-11-30 | 银川市恒益达机械有限公司 | Engine cylinder block line boring clamp and line boring machine tool |
| CN114054793A (en) * | 2021-12-27 | 2022-02-18 | 黄秀芳 | Hoisting, positioning and lubricating structure of boring rod for machining high-precision frame hole of reciprocating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20120310 |