CN101116915A - Non-conventional type hole combined boring mill - Google Patents
Non-conventional type hole combined boring mill Download PDFInfo
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- CN101116915A CN101116915A CNA2007100171397A CN200710017139A CN101116915A CN 101116915 A CN101116915 A CN 101116915A CN A2007100171397 A CNA2007100171397 A CN A2007100171397A CN 200710017139 A CN200710017139 A CN 200710017139A CN 101116915 A CN101116915 A CN 101116915A
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Abstract
The invention relates to an profile hole assemble boring machine, which comprises a machine tool base, a principal axis motor, a gyrus worktable and a chucking mechanism which are arranged on the machine tool base. A clamp spring groove and an inner-outer chamfer angle and outside chamfer angle boring feed mechanism are arranged one side of the machine tool base. The rotor of the principal axis motor is directly connected with the principal axis. The invention adopts the direct connection transmission of the motor rotor and the principal axis to improve the processing precision. Because of without the belt unloading system, the vibration of the machine tool due to belt chattering is avoided, thereby reducing breakdown and avoiding the boring head heating-up phenomenon due to bearing heating. Because the clamp spring groove and the inner-outer rotating angle boring feed mechanism are arranged on the machine tool base, the precise processing of a piston profile hole, the clamp spring groove, the inner chamfer angle and outer chamfer angle are realized, thereby reducing the processing sequence, decreasing the processing error and improving the processing precision.
Description
Technical field
The present invention relates to a kind of lathe, specifically a kind of modular boring machine that is used for working special-shaped hole.
Background technology
The basic structure of existing boring machine and the shortcoming and defect of existence thereof reduce two aspects:
One, special-shaped boring head configuration aspects: the boring machine for boring special-shaped holes that my Binzhou, company Shandong piston factory once developed, its machining accuracy still lower (resolving accuracy is up to the 0.03um/ pulse), its irregularly-shaped hole spindle drive mode adopts belt transmission to add Load Relief System.Main shaft adopts belt transmission, can't avoid causing machine vibration because of the belt vibration; Load Relief System has not only increased the source of trouble, and has increased because the bearing friction heating makes the problem of boring head intensification, and there is same problem in lathe in the market.
Two, lathe overall structure aspect:
The boring machine for boring special-shaped holes that my company once developed, it can only finish the single operation of piston right boring irregularly-shaped hole.To chamfering, outer chamfering, jump ring groove operation in the piston pin hole, need on other special purpose machine tools, finish.Increase piston resetting error like this, thereby influenced piston machining accuracy, also do not had to finish simultaneously the boring machine of above-mentioned functions in the market.
Summary of the invention
The present invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of rotor and the transmission of main shaft associated mode are provided, the piston machining accuracy height can realize that finishing machine is made up in the precision machined precisive boring machine for irregular holes piston pin hole numerical control of piston pinhole, jump ring groove and interior chamfering, a clamping of outer chamfering.
The objective of the invention is to adopt following technical proposals to realize: a kind of non-conventional type hole combined boring mill, comprise lathe base, lathe base is provided with spindle motor, rotary table and clamp mechanism, a side is equipped with jump ring groove and inside and outside chamfering boring feed mechanism, spindle motor rotor and main shaft direct connection on lathe base.
Described rotary table and clamp mechanism comprise the rotary table pedestal, the rotary table pedestal is provided with the rotary table rotating disk, be provided with tooth bar in the rotary table pedestal, gear and gyroaxis, the rack and pinion engagement, gear is fixed on the gyroaxis, gyroaxis top is located in the rotary table rotating disk, gyroaxis is connected with seam tire terminal pad, seam tire terminal pad is provided with the seam tire, and rotary table rotating disk top is fixed with oil cylinder, and the bottom is provided with the guide post of helical groove structure in the oil cylinder, the guide post upper end is connected with piston rod, be fixed with clamp arm on the piston rod, gland is installed on the clamp arm, the gland in the vertical direction is corresponding with the seam tire.
Described jump ring groove and inside and outside chamfering boring feed mechanism comprise cylinder body, and cylinder body one side is installed tie-plate, is provided with lower piston in the cylinder body, and last lower piston is connected with spring with slide block respectively, and slide block is connected with the boring bar of boring cutter; Be provided with the oil circuit that is communicated with last lower piston and slide block in the cylinder body, the input of oil circuit is provided with oil nozzle.
Gapped between the wall of chamber around the described slide block.
Described spindle motor rotor and main shaft direct connection are spindle motor rotor and adapter sleeve hot charging, and adapter sleeve tightens by Morse's taper with main shaft and is connected.
The present invention adopts rotor and the transmission of main shaft associated mode, machining accuracy improves greatly, has not had the belt Load Relief System, has avoided the machine vibration that causes because of the belt vibration, and reduced the generation of fault, avoided because the bearing friction heating makes boring head intensification phenomenon.Jump ring groove and inside and outside chamfering boring feed mechanism are installed on lathe base, can be realized the Precision Machining of piston pinhole, jump ring groove and interior chamfering, a clamping of outer chamfering, reduced manufacturing procedure, reduced mismachining tolerance, improved machining accuracy.Below be the contrast of electric main shaft precision boring head and belt transmission boring head data:
| Project | Electricity main shaft precision boring head | The belt transmission boring head |
| Cylindricity | ＜0.002mm | 0.003mm about |
| Circularity | ＜0.0015mm | 0.002mm |
| Linearity | ＜0.0012mm | 0.002mm |
| Surface roughness | Ra0.4um | Ra0.55um |
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an irregularly-shaped hole boring head structural representation;
Fig. 3 is rotary table and clamp mechanism structural representation;
Fig. 4 is that jump ring groove and inside and outside chamfering are cut the feed mechanism structural representation;
Fig. 5 is the A-A profile of Fig. 4.
Wherein 1, lathe base, 2, the lead screw transmission part, 3, boring head is delivering gear radially, and 4, spindle motor, 5, hole throttle type high speed and precision fluid pressure boring head, 6, rotary table, 7, workpiece revolution clamp mechanism, 8, jump ring groove and inside and outside chamfering boring feed mechanism, 9, jump ring groove and inside and outside chamfering main spindle box, 10, automatic lubrication installation, 11, accurate line slideway, 12, machine tool sliding table, 13, lathe is passed a bridge, 14, the lathe outer shaft, 15, axle in the lathe, 16, hole throttle type high speed and precision hydrodynamic journal liquid polymers, 17, Pressure gauge, 18, the helicla flute support, 19, the little axle of interior outer shaft motion transmission, 20, spline housing, 21, splined shaft, 22, the splined shaft bearing, 23, the dovetail slide unit, 24, ball-screw, 25, the arc tooth synchronous belt wheel, 26, be with 27 synchronously, servo drive motor, 28, the rotary table pedestal, 29, tooth bar, 30, gear, 31, the rotary table rotating disk, 32, gyroaxis, 33, seam tire terminal pad, 34, guide post, 35, oil cylinder, 36, piston rod, 37, clamp arm, 38, gland, 39, piston, 40, the seam tire, 41, slide block, 42, upper piston, 43, right end cap, 44, oil nozzle, 45, cylinder body, 46, lower piston, 47, tie-plate, 48, spring.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Among Fig. 1, lathe base 1 left side is equipped with lead screw transmission part 2, and the right side is provided with automatic lubrication installation 10.Lathe base 1 upper left-hand is equipped with boring head radially delivering gear 3, spindle motor 4 and hole throttle type high speed and precision fluid pressure boring head 5 successively.Top, lathe base 1 middle part is provided with accurate line slideway 11, is provided with machine tool sliding table 12 above the accurate line slideway 11, and rotary table 6 is installed above the machine tool sliding table 12, and rotary table 6 is provided with workpiece revolution clamp mechanism 7.Be provided with jump ring groove and inside and outside chamfering main spindle box 9 in the lathe base right upper portion, jump ring groove and inside and outside chamfering main spindle box 9 are provided with jump ring groove and inside and outside chamfering boring feed mechanism 8.
Among Fig. 2, the left side of lathe gap bridge 13 is provided with servo drive motor 27, the output shaft of servo drive motor 27 is provided with arc tooth synchronous belt wheel 25, arc tooth synchronous belt wheel 25 by synchronously with 26 with ball-screw 24 on arc tooth synchronous belt wheel 25 link together, ball-screw 24 connects dovetail slide unit 23, splined shaft bearing 22 is installed on the dovetail slide unit 23, and splined shaft bearing 22 is provided with splined shaft 21, the splined shaft 21 outer spline housings 20 that are provided with; The little axle 19 of outer shaft motion transmission in being fixed with on the splined shaft 21, the little axle 19 of interior outer shaft motion transmission is installed on the helicla flute support 18, helicla flute support 18 is fixed together with conical disc, and conical disc is fixed on the lathe outer shaft 14, and lathe outer shaft 14 is connected with spindle motor 4 by shaft coupling.Spools 15 are connected in the dovetail mechanism that splined shaft 21 is formed by spline housing 20 and the inclined guide groove that is connected with spline housing 20, dovetail groove and the lathe.Axle 15 is relative eccentric with lathe outer shaft 14 in the lathe.
The two ends of lathe outer shaft 14 are located at respectively in the front and back hole throttle type high speed and precision hydrodynamic journal liquid polymers 16, hole throttle type high speed and precision hydrodynamic journal liquid polymers 16 are connected with orifice restriction device, pressure oil filter element by oil circuit, are respectively equipped with the Pressure gauge 17 that is connected with orifice restriction device, pressure oil filter element before and after main spindle box top.Can realize the fuel feeding of hole throttle type high speed and precision hydrodynamic journal liquid polymers 16 pressure oil cavities and the detection of lower oil cavitie oil pressure.Spindle motor rotor and adapter sleeve hot charging, adapter sleeve tighten by Morse's taper with main shaft and are connected.
As shown in Figure 1 and Figure 2, during work, boring cutter bar is fixed on the interior axle 15 of lathe, and follow lathe outer shaft 14 makes high speed rotary motion to axle 15 on the one hand in the lathe, finishes the boring of hole in piece part; On the other hand, under servomotor 27 controls, can realize the translation of whole knife bar again, finish the radial feed motion of boring cutter.
1. the formation of high speed boring campaign:
Spindle motor 4 drives lathe outer shaft 14 rotation at a high speed, lathe outer shaft 14 is by being fixed on helicla flute support 18 and the little axle 19 of interior outer shaft motion transmission above it, and by spline housing 20, high speed rotary motion is passed to splined shaft 21, splined shaft 21 passes through radially movably dovetail slide block, high speed rotary motion passes on the interior axle 15 of the lathe that knife bar is housed the most at last, thereby has finished the high speed boring campaign of lathe.
The formation of 2. little radially feed campaign:
Servomotor 27 is by arc tooth synchronous belt wheel 25 and be with 26 synchronously, and ball-screw 24 drives dovetail slide unit 23 rectilinear motions; Dovetail slide unit 23 is by splined shaft 21 and be installed on the little axle 19 of interior outer shaft motion transmission in the helicla flute support 18, the relative rotary motion of the little axle 19 of outer shaft motion transmission in rectilinear motion is become; The relative rotary motion of the little axle 19 of interior outer shaft motion transmission reaches radially movably dovetail slide block by splined shaft 20, becomes the relative rotary motion of 15 pairs of lathe outer shafts 14 of axle in the lathe.Because 15 pairs of lathe outer shafts 14 of axle are eccentric relatively in the lathe, so 15 pairs of lathe outer shaft 14 relative motions of axle just become the radially feed campaign that is installed on axle 15 front end knife bars in the lathe in the lathe.
3. shaping of horn mouth pin-and-hole:
Because the rotation of servomotor 27 is by the delivering gear 3 radially of the boring head among Fig. 1, can form the radially feed campaign of boring cutter, so the machine tool sliding table 12 of driven by servomotor is made moving interpolation among servomotor 27 and Fig. 1, the Precision Machining that can finish various toroidal noncircular pin holes is shaped.
Among Fig. 3, rotary table pedestal 28 is provided with rotary table rotating disk 31, be provided with tooth bar 29 in the rotary table pedestal 28, gear 30 and gyroaxis 32, tooth bar 29 and gear 30 engagements, gear 30 is fixed on the gyroaxis 32, gyroaxis 32 tops are located in the rotary table rotating disk 31, gyroaxis 32 is connected with seam tire terminal pad 33, seam tire terminal pad 33 is provided with seam tire 40, rotary table rotating disk 31 tops are fixed with oil cylinder 35, the bottom is provided with the guide post 34 of helical groove structure in the oil cylinder 35, guide post 34 upper ends are connected with piston rod 36, be fixed with clamp arm 37 on the piston rod 36, be connected with gland 38 on the clamp arm 37, gland 38 in the vertical directions are corresponding with seam tire 40.
Its course of work comprises that the revolution of work table rotation and piston clamps.
Work table rotation:
Hydraulic Station makes it do horizontal rectilinear motion for tooth bar 29 provides power, promotes gear 30 with hour rack 29 and does gyration.Gear 30 drives gyroaxis 32, seam tire terminal pad 33 and seam tire 40 by flat key and does gyration, thereby makes piston to be processed 39 finish back turnback.
The revolution of piston clamps:
After piston 39 to be processed is located by inner chamber, seam, pressure oil promotes piston rod 36 and moves downward, piston rod 36 drives clamp arm 37, gland 38 moves downward, and passes through the helical groove structure of guide post 34, and the rotation of finishing piston to be processed 39 clamps motion.
Among Fig. 4, Fig. 5, cylinder body 45 left sides are equipped with tie-plate 47, are provided with upper and lower piston 42,46 in the cylinder body 45, and upper and lower piston 42,46 is connected with spring 48 with slide block 41 respectively, and slide block 41 is connected with the boring bar of boring cutter; Be provided with the oil circuit that is communicated with upper and lower piston 42,46 and slide block 41 in the left and right end cap 43 of cylinder body 45, the input of oil circuit is provided with oil nozzle 44.Around the slide block 41 and between the chamber wall of cylinder body 45 the 4mm gap is arranged.
During work, Hydraulic Station gives upper piston 42, lower piston 46 for pressure oil by oil nozzle 44 and internal oil passages, and upper piston 42, lower piston 46 are radially moved simultaneously.Because slide block 41 circumference and cylinder body 5 cavitys have the 4mm gap, slide block 41 under the pressure oil effect, slow radial motion, upper piston 42, lower piston 46 are connected with slide block 41, slide block 41 is connected with boring bar, can finish the radially feed of boring bar like this.After piston jump ring groove or inside and outside chamfer machining are finished,, boring bar is resetted by being installed in the spring 48 of upper piston 42, lower piston 46.
Concrete process is as follows:
Piston 39 to be processed begins to be positioned at 0 position of lathe, behind inner chamber, seam location, pressure oil promotes piston rod 36 and moves downward, piston rod 36 drives clamp arm 37, gland 38 moves downward, and the helical groove structure by guide post 34, the rotation of finishing piston to be processed 39 clamps motion.After piston 39 clamps, jump ring groove and inside and outside chamfering main axis rotation, meanwhile, piston 39 is moved horizontally to the position of jump ring groove and interior chamfering boring cutter under the driving of Z axle servomotor.By the radial feed of jump ring groove and inside and outside chamfering boring feed mechanism 8, finish the processing of piston one side pin-and-hole jump ring groove and inside and outside chamfering.Piston 39 returns to 0 position of lathe then, and Hydraulic Station makes it do horizontal rectilinear motion for tooth bar 29 provides power subsequently, promotes gear 30 with hour rack 29 and does gyration.Gear 30 drives gyroaxis 32, seam tire terminal pad 33 and seam tire 40 by flat key and does gyration, thereby makes piston to be processed 39 finish back turnback.
Then, piston 39 under the driving of Z axle servomotor, is moved horizontally to the position of jump ring groove and interior chamfering boring cutter again.By the radial feed of jump ring groove and inside and outside chamfering boring feed mechanism 8, finish the processing of piston opposite side pin-and-hole jump ring groove and inside and outside chamfering.After chamfering jump ring groove processed, piston 39 returned to lathe 0 point, meanwhile, and hole throttle type high speed and precision fluid pressure boring head 5, rotation at a high speed.Piston 39 moves horizontally to static pressure boring head direction under Z axle driven by servomotor, mends by the difference of piston Z axle servomotor and depth-feed mechanism, finishes the processing of piston pinhole.Then, piston returns to lathe 0 point, and pressure oil promotes piston rod 36 and moves upward, piston rod 36 drives clamp arm 37, gland 38 moves upward, and the helical groove structure by guide post 34, finish the rotation relaxing exercise of piston to be processed 39, finish the fine finishining of piston pin hole.
Claims (5)
1. non-conventional type hole combined boring mill, comprise lathe base, lathe base is provided with main shaft, spindle motor, rotary table and clamp mechanism, it is characterized in that: a side is equipped with jump ring groove and inside and outside chamfering boring feed mechanism, spindle motor rotor and main shaft direct connection on lathe base.
2. non-conventional type hole combined boring mill according to claim 1, it is characterized in that: described rotary table and clamp mechanism comprise the rotary table pedestal, the rotary table pedestal is provided with the rotary table rotating disk, be provided with tooth bar in the rotary table pedestal, gear and gyroaxis, the rack and pinion engagement, gear is fixed on the gyroaxis, gyroaxis top is located in the rotary table rotating disk, gyroaxis is connected with seam tire terminal pad, seam tire terminal pad is provided with the seam tire, rotary table rotating disk top is fixed with oil cylinder, the bottom is provided with the guide post of helical groove structure in the oil cylinder, and the guide post upper end is connected with piston rod, is fixed with clamp arm on the piston rod, gland is installed on the clamp arm, and the gland in the vertical direction is corresponding with the seam tire.
3. non-conventional type hole combined boring mill according to claim 1, it is characterized in that: described jump ring groove and inside and outside chamfering boring feed mechanism comprise cylinder body, cylinder body one side is installed tie-plate, be provided with lower piston in the cylinder body, last lower piston is connected with spring with slide block respectively, and slide block is connected with the boring bar of boring cutter; Be provided with the oil circuit that is communicated with last lower piston and slide block in the cylinder body, the input of oil circuit is provided with oil nozzle.
4. non-conventional type hole combined boring mill according to claim 3 is characterized in that: gapped between the wall of chamber around the described slide block.
5. non-conventional type hole combined boring mill according to claim 1 is characterized in that: described spindle motor rotor and main shaft direct connection are spindle motor rotor and adapter sleeve hot charging, and adapter sleeve tightens by Morse's taper with main shaft and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100171397A CN100503103C (en) | 2007-09-05 | 2007-09-05 | Non-conventional type hole combined boring mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100171397A CN100503103C (en) | 2007-09-05 | 2007-09-05 | Non-conventional type hole combined boring mill |
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| Publication Number | Publication Date |
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| CN101116915A true CN101116915A (en) | 2008-02-06 |
| CN100503103C CN100503103C (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100171397A Active CN100503103C (en) | 2007-09-05 | 2007-09-05 | Non-conventional type hole combined boring mill |
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| CN (1) | CN100503103C (en) |
Cited By (14)
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| CN101712079B (en) * | 2009-10-22 | 2011-06-15 | 中国第一汽车集团公司 | Method for processing oil grooves in inner bores of copper bearing bush |
| CN102303132A (en) * | 2011-08-30 | 2012-01-04 | 山东宏康机械制造有限公司 | Transmission system for spindle box of boring and milling machine |
| CN103008706A (en) * | 2012-11-26 | 2013-04-03 | 福建省将乐庆航机床有限公司 | Static pressure boring head structure for irregularly-shaped holes |
| CN103481101A (en) * | 2013-09-23 | 2014-01-01 | 苏州江源精密机械有限公司 | Horizontal type boring and milling head |
| CN103894832A (en) * | 2014-03-27 | 2014-07-02 | 浙江道森活塞制造有限公司 | Device for processing pin hole on internal combustion engine piston and clamping spring groove in pin hole |
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| CN105033315A (en) * | 2015-08-13 | 2015-11-11 | 盐城工业职业技术学院 | Improved boring mill device of lathe |
| CN106363208A (en) * | 2016-11-23 | 2017-02-01 | 山东滨州渤海活塞股份有限公司 | Boring machine for irregularly-shaped holes of connecting rod |
| CN106425445A (en) * | 2016-12-21 | 2017-02-22 | 重庆昌跃机电制造有限公司 | Crankshaft connection rod manufacturing torque device |
| CN109530753A (en) * | 2019-01-21 | 2019-03-29 | 天津普天单向器有限公司 | A kind of chamfer machining combination unit and application method |
| CN111761369A (en) * | 2020-06-18 | 2020-10-13 | 王学义 | Drilling device for machining air conditioner hanging plate and using method of drilling device |
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| CN114289757A (en) * | 2021-12-30 | 2022-04-08 | 杭州临安雄风机械有限公司 | Boring equipment for special-shaped pin holes of injection molding machine piston |
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| DE3406490A1 (en) * | 1984-02-23 | 1985-08-29 | GTE Valeron Corp. (eine Gesellschaft n.d.Ges.d. Staates Delaware), Troy, Mich. | REPLACEABLE TOOL HEAD FOR A NUMERICALLY CONTROLLED MACHINE |
| CN1070748C (en) * | 1998-04-23 | 2001-09-12 | 刘炳运 | Special pinhole borer |
| CN2470046Y (en) * | 2001-02-28 | 2002-01-09 | 芜湖重型机床股份有限公司 | Milling and boring machine tool |
| CN2488637Y (en) * | 2001-07-26 | 2002-05-01 | 山东滨州渤海活塞股份有限公司 | Processing machine tool for non-circle surface |
| CN1212213C (en) * | 2001-08-29 | 2005-07-27 | 山东滨州渤海活塞股份有限公司 | Precisive boring machine for irregular holes |
| CN2543630Y (en) * | 2002-05-10 | 2003-04-09 | 湖南一派数控设备有限公司 | Combined boring head |
| CN1298470C (en) * | 2005-09-22 | 2007-02-07 | 山东大学 | Boring mill for working special-shaped curved hole |
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| CN101712079B (en) * | 2009-10-22 | 2011-06-15 | 中国第一汽车集团公司 | Method for processing oil grooves in inner bores of copper bearing bush |
| CN102303132A (en) * | 2011-08-30 | 2012-01-04 | 山东宏康机械制造有限公司 | Transmission system for spindle box of boring and milling machine |
| CN103008706A (en) * | 2012-11-26 | 2013-04-03 | 福建省将乐庆航机床有限公司 | Static pressure boring head structure for irregularly-shaped holes |
| CN103481101A (en) * | 2013-09-23 | 2014-01-01 | 苏州江源精密机械有限公司 | Horizontal type boring and milling head |
| CN103894832B (en) * | 2014-03-27 | 2017-03-08 | 浙江道森活塞制造有限公司 | The processing unit (plant) of pin-and-hole and pin-and-hole internal jump ring groove on a kind of internal combustion engine |
| CN103894832A (en) * | 2014-03-27 | 2014-07-02 | 浙江道森活塞制造有限公司 | Device for processing pin hole on internal combustion engine piston and clamping spring groove in pin hole |
| CN104162804A (en) * | 2014-06-24 | 2014-11-26 | 梁淑慧 | Thread machining tool capable of recovering liquid waste |
| CN104493712A (en) * | 2014-12-22 | 2015-04-08 | 重庆市安太弹簧有限责任公司 | Spring end face grinding machine |
| CN105033315A (en) * | 2015-08-13 | 2015-11-11 | 盐城工业职业技术学院 | Improved boring mill device of lathe |
| CN106363208A (en) * | 2016-11-23 | 2017-02-01 | 山东滨州渤海活塞股份有限公司 | Boring machine for irregularly-shaped holes of connecting rod |
| CN106425445A (en) * | 2016-12-21 | 2017-02-22 | 重庆昌跃机电制造有限公司 | Crankshaft connection rod manufacturing torque device |
| CN106425445B (en) * | 2016-12-21 | 2019-03-22 | 重庆昌跃机电制造有限公司 | A kind of torquer for crankshaft-link rod production |
| CN109530753A (en) * | 2019-01-21 | 2019-03-29 | 天津普天单向器有限公司 | A kind of chamfer machining combination unit and application method |
| CN109530753B (en) * | 2019-01-21 | 2023-08-29 | 天津普天单向器有限公司 | Chamfering machining combination device and use method |
| CN111761369A (en) * | 2020-06-18 | 2020-10-13 | 王学义 | Drilling device for machining air conditioner hanging plate and using method of drilling device |
| CN114046287A (en) * | 2021-11-17 | 2022-02-15 | 中国兵器工业集团江山重工研究院有限公司 | Hydraulic integrated oil cylinder barrel and machining method thereof |
| CN114046287B (en) * | 2021-11-17 | 2023-05-23 | 中国兵器工业集团江山重工研究院有限公司 | Hydraulic integrated cylinder barrel and processing method thereof |
| CN114289757A (en) * | 2021-12-30 | 2022-04-08 | 杭州临安雄风机械有限公司 | Boring equipment for special-shaped pin holes of injection molding machine piston |
| CN114289757B (en) * | 2021-12-30 | 2023-01-03 | 杭州临安雄风机械有限公司 | Boring equipment for special-shaped pin holes of injection molding machine piston |
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| Publication number | Publication date |
|---|---|
| CN100503103C (en) | 2009-06-24 |
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