CN109702234B - Integrated internal and external round boring cutter device - Google Patents
Integrated internal and external round boring cutter device Download PDFInfo
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- CN109702234B CN109702234B CN201811502769.8A CN201811502769A CN109702234B CN 109702234 B CN109702234 B CN 109702234B CN 201811502769 A CN201811502769 A CN 201811502769A CN 109702234 B CN109702234 B CN 109702234B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an integrated internal and external round boring cutter device which comprises a cutter handle, a cutter holder sliding block, an adjustable fine boring head with a fine boring cutter, a fastening cushion block, a balancing weight and a rough boring cutter, wherein the top surface of the cutter handle is provided with a chute, the cutter holder sliding block is centrally arranged in the chute on the top surface of the cutter handle, cutter position holes are respectively and vertically arranged at two ends of the cutter holder sliding block, the adjustable fine boring head with the fine boring cutter or the rough boring cutter is arranged in any cutter position hole and is positioned on the top surface or the bottom surface of the cutter holder sliding block, the fastening cushion block is positioned in the other cutter position hole, and the balancing weight is arranged on the top surface or the bottom surface of the fastening cushion block through bolts and gaskets. The device realizes the rough and fine boring processing functions of forward and reverse holes, the processing functions of rough and fine boring of long outer circular bosses, and the processing of certain end surface ring grooves, has reasonable structure, is economical and practical, and effectively improves the processing efficiency and the processing precision of workpieces.
Description
Technical Field
The invention relates to an integrated inner and outer circle boring cutter device.
Background
The functions of larger-diameter hole or shaft boring cutters in the current market are single, the forward inner hole rough boring and finish boring cutters are usually adopted for the hole boring cutters, and the reverse boring cutters are fewer and have single functions; the boring cutter for the outer circular boss is usually only capable of processing the outer circular boss which is short, and the rough boring and the finish boring functions cannot be integrated.
In view of the above, there is no tool device for boring an inner circle and an outer circle with multiple functions in an integrated manner in the current market.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated internal and external round boring cutter device, which realizes the rough and fine boring processing functions of forward and reverse holes, generally and longer outer round boss rough and fine boring processing functions, and completes the processing of certain end face ring grooves, and has the advantages of reasonable structure, economy and practicability, and effectively improves the processing efficiency and accuracy of workpieces.
In order to solve the technical problems, the integrated inner and outer round boring cutter device comprises a cutter handle, a cutter holder sliding block, an adjustable fine boring head with a fine boring cutter, a fastening cushion block, a balancing weight and a rough boring cutter, wherein the top surface of the cutter handle is provided with a sliding groove, the cutter holder sliding block is centrally arranged in the sliding groove on the top surface of the cutter handle, two ends of the cutter holder sliding block are respectively and vertically provided with a cutter position hole, the adjustable fine boring head with the fine boring cutter or the rough boring cutter is arranged in any cutter position hole and is positioned on the top surface or the bottom surface of the cutter holder sliding block, the fastening cushion block is positioned in the other cutter position hole, and the balancing weight is arranged on the top surface or the bottom surface of the fastening cushion block through a bolt and a gasket.
Further, screw holes are formed in the bottom surface of the sliding groove on the top surface of the cutter handle at intervals, kidney-shaped grooves are formed in the middle of the cutter seat slide block at intervals, and bolts penetrate through the kidney-shaped grooves and are screwed into the screw holes in the bottom surface of the sliding groove to fasten the cutter seat slide block in the sliding groove on the top surface of the cutter handle.
Further, the device also comprises a lengthening rod, wherein the lengthening rod is arranged between the cutter position hole of the cutter holder sliding block and the adjustable fine boring head with the fine boring cutter.
Further, a sinking table is arranged on the top surface and the bottom surface of one cutter position hole of the cutter holder sliding block respectively, positioning key grooves are formed in the two sides of the bottom surface of the sinking table, screw holes are formed in the top surface and the bottom surface of the other cutter position hole of the cutter holder sliding block respectively at intervals, a boss is arranged on the bottom surface of an adjustable fine boring head with a fine boring cutter, a balancing weight and a lengthening rod, screw holes are formed in the boss on the bottom surface of the adjustable fine boring head with the fine boring cutter and the boss on the bottom surface of the lengthening rod in the middle, positioning pins are arranged on the two sides of the boss on the bottom surface of the adjustable fine boring head with the fine boring cutter and the boss on the bottom surface of the lengthening rod, bolts penetrate the cutter position holes and are screwed into the screw holes on the bottom surface of the adjustable fine boring head with the fine boring cutter, the balancing weight or the lengthening rod through the bolts, and the rough boring cutter or the fastening cushion block is arranged in the other cutter position hole and is fastened through the screw holes on the side surfaces of the fine boring cutter.
Furthermore, the top surface of the extension rod is provided with a sinking table, two sides of the bottom surface of the sinking table are provided with positioning key grooves, and the bottom surface boss of the adjustable fine boring head with the fine boring cutter and the positioning pin are respectively positioned in the sinking table and the positioning key grooves on the top surface of the extension rod.
Further, the device also comprises a conversion sleeve, the top surface of the conversion sleeve is provided with a ring cap, the side wall of the conversion sleeve is provided with a kidney-shaped hole, the conversion sleeve is arranged in the other cutter position hole of the cutter holder sliding block, the ring cap is positioned on a sinking table of the cutter position hole, the kidney-shaped hole is opposite to a screw hole on the side surface of the cutter position hole, and the rough boring cutter is inserted into the conversion sleeve and screwed into the screw hole on the side surface of the cutter position hole through a bolt, and is fastened through the kidney-shaped hole on the side wall of the conversion sleeve.
Because the integrated internal and external round boring cutter device adopts the technical scheme, the integrated internal and external round boring cutter device comprises a cutter handle, a cutter holder sliding block, an adjustable fine boring head with a fine boring cutter, a fastening cushion block, a balancing weight and a rough boring cutter, wherein the top surface of the cutter handle is provided with a chute, the cutter holder sliding block is centrally arranged in the chute on the top surface of the cutter handle, two ends of the cutter holder sliding block are respectively and vertically provided with a cutter position hole, the adjustable fine boring head with the fine boring cutter or the rough boring cutter is arranged in any cutter position hole and is positioned on the top surface or the bottom surface of the cutter holder sliding block, the fastening cushion block is positioned in the other cutter position hole, and the balancing weight is arranged on the top surface or the bottom surface of the fastening cushion block through a bolt and a gasket. The device realizes the rough and fine boring processing functions of forward and reverse holes, the processing functions of rough and fine boring of long outer circular bosses, and the processing of certain end surface ring grooves, has reasonable structure, is economical and practical, and effectively improves the processing efficiency and the processing precision of workpieces.
Drawings
The invention is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is a schematic view of an integrated inner and outer boring cutter device;
FIG. 2 is a schematic view of a tool shank in the present apparatus;
FIG. 3 is a schematic view of a tool apron slider in the present apparatus;
FIG. 4 is a schematic view in the A-A direction of FIG. 3;
FIG. 5 is a schematic view of an adjustable fine boring head with a fine boring cutter in the apparatus;
FIG. 6 is a schematic diagram of a rough boring cutter in the device;
FIG. 7 is a schematic view of an extension rod in the present apparatus;
FIG. 8 is a schematic diagram of a weight in the present apparatus;
FIG. 9 is a schematic view of a conversion sleeve in the present apparatus;
fig. 10a and 10b are schematic structural diagrams and processing schematic diagrams of the device during the forward rough boring of an inner hole;
fig. 11a and 11b are schematic structural diagrams and processing schematic diagrams of the device during cylindrical rough boring;
fig. 12a and 12b are schematic structural diagrams and schematic processing diagrams of the device during reverse boring of an inner hole;
fig. 13a and 13b are schematic structural diagrams of the device after the conversion sleeve is added to the rough boring cutter and schematic processing diagram of the end surface ring groove of the workpiece;
fig. 14a and 14b are schematic structural diagrams and schematic processing diagrams of the device during positive precision boring of an inner hole;
fig. 15a and 15b are schematic structural diagrams and processing schematic diagrams of the device during the precision boring of the outer circle;
FIGS. 16a and 16b are schematic structural and processing diagrams of the device during reverse precision boring of an inner hole;
fig. 17a and 17b are schematic structural diagrams of the device after the long rod is installed and schematic diagrams of a longer outer circular boss of a machined workpiece.
Detailed Description
1-9, the integrated inner and outer round boring cutter device comprises a cutter handle 1, a cutter holder sliding block 2, an adjustable fine boring head 3 with a fine boring cutter 31, a fastening cushion block 5, a balancing weight 4 and a rough boring cutter 6, wherein a chute 11 is formed in the top surface of the cutter handle 1, the cutter holder sliding block 2 is centrally arranged in the chute 11 in the top surface of the cutter handle 1, cutter position holes 21 and 22 are respectively and vertically formed in two ends of the cutter holder sliding block, the adjustable fine boring head 3 with the fine boring cutter 31 or the rough boring cutter 6 is arranged in any one of the cutter position holes 21 and 22 and is positioned on the top surface or the bottom surface of the cutter holder sliding block 2, the fastening cushion block 5 is positioned in the other cutter position hole, and the balancing weight 4 is arranged on the top surface or the bottom surface of the fastening cushion block 5 through a bolt 51 and a gasket 52.
Preferably, screw holes 12 are formed in the bottom surface of the sliding groove 11 on the top surface of the tool holder 1 at intervals, kidney-shaped grooves 23 are formed in the middle of the tool holder sliding block 2 at intervals, and bolts 24 penetrate through the kidney-shaped grooves 23 and are screwed into the screw holes 12 on the bottom surface of the sliding groove 11 to fasten the tool holder sliding block 2 in the sliding groove 11 on the top surface of the tool holder 1.
Preferably, the device further comprises a lengthening rod 7, wherein the lengthening rod 7 is arranged between the cutter position hole 21 of the cutter holder sliding block 2 and the adjustable fine boring head 3 with the fine boring cutter 31.
Preferably, the top surface and the bottom surface of one tool position hole 21 of the tool apron slide 2 are respectively provided with a sinking table 25, two sides of the bottom surface of the sinking table 25 are respectively provided with a positioning key groove 26, the top surface and the bottom surface of the other tool position hole 22 of the tool apron slide 2 are respectively provided with a sinking table 27, the side surfaces are provided with screw holes 28 at intervals, the bottom surfaces of the adjustable fine boring head 3 with the fine boring tool 31, the balancing weight 4 and the extension rod 7 are provided with bosses 32, 41 and 71 and are centrally provided with screw holes 33, 42 and 72, two sides of the bosses 32 and 71 of the bottom surfaces of the adjustable fine boring head 3 and the extension rod 7 are provided with positioning pins 34 and 73, the bosses 32, 41 and 71 and the positioning pins 34 and 73 are respectively positioned in the sinking table 25 and the positioning key groove 26, and the bolts penetrate into the screw holes 33, 42 and 72 of the bottom surfaces of the adjustable fine boring head 3 with the fine boring tool 31, the balancing weight 4 and the extension rod 7, and the rough boring tool 6 or the fastening cushion block 5 are arranged in the other position hole 22 and are fastened by screwing in the screw holes 33, 42 and 28 of the side surfaces of the tool position hole 22.
Preferably, the top surface of the extension rod 7 is provided with a sinking table 74, positioning key grooves 75 are formed in two sides of the bottom surface of the sinking table 74, and the boss 32 and the positioning pin 34 of the bottom surface of the adjustable fine boring head 3 with the fine boring cutter 31 are respectively positioned in the sinking table 74 and the positioning key grooves 75 on the top surface of the extension rod 7.
Preferably, the device further comprises a conversion sleeve 8, the top surface of the conversion sleeve 8 is provided with a ring cap 81, the side wall of the conversion sleeve is provided with a waist-shaped hole 82, the conversion sleeve 8 is arranged in the other cutter position hole 22 of the cutter holder sliding block 2, the ring cap is positioned on the sinking table 27 of the cutter position hole 22, the waist-shaped hole 82 is opposite to the screw hole 28 on the side surface of the cutter position hole 22, and the rough boring cutter 6 is inserted into the conversion sleeve 8 and screwed into the screw hole 28 on the side surface of the cutter position hole 22 through a bolt, and the waist-shaped hole 82 penetrating through the side wall of the conversion sleeve 8 is used for fastening the rough boring cutter 6.
The tool holder is a connecting piece of the device, a machine tool spindle and a tool holder sliding block, the tool holder sliding block is arranged in a chute of the tool holder and can transversely move in a left-right certain range, so that the large-size adjusting function of the tool holder sliding block in the device is completed, after the adjustment is completed, an inner hexagon bolt passes through a waist-shaped groove of the tool holder sliding block and is fastened in a screw hole of the chute of the tool holder, and the connection and fixation of the tool holder and the tool holder sliding block are completed; when the fine small size is finely adjusted, the position of the fine boring cutter is adjusted by a precise adjusting mechanism arranged in the adjustable fine boring head.
The assembly modes and application of the components under various functions of the device are as follows:
as shown in fig. 10a and 10b, fig. 11a and 11b, and fig. 12a and 12b, the cutter device respectively realizes the functions of forward rough boring of the inner hole 61, rough boring of the outer circle 62 and rough boring of the reverse inner hole 61; as shown in the figure, the rough boring cutter 6 is installed in the cutter position hole 22 according to different processing station requirements (the cutter head is upward during forward rough boring, the cutting edge is outward placed, the cutter head is upward during external circle rough boring, the cutting edge is inward placed, the cutter head is downward during reverse rough boring, and the cutting edge is outward placed), positioning and fixing are realized through the two lateral screw holes 28 by the bolts 29, and the balancing weight 4 is installed in the sinking table 25 at the upper part of the cutter position hole 21 (or can be reversely installed in the sinking table at the lower part of the cutter position hole 21 according to requirements). The fastening cushion block 5 is arranged in the cutter position hole 21 of the cutter handle slide block 2, and the inner hexagon bolt 51 is screwed into a screw hole on the bottom surface of the fastening cushion block 5 to complete fastening connection with the balancing weight 4.
Generally, a short-length rough boring cutter 6 is used for forward rough boring of an inner hole, so as to meet and improve the cutting rigidity requirement in rough machining.
As shown in fig. 13a and 13b, for the modularized rough boring cutter 6 with smaller specification, a conversion sleeve 8 is sleeved into a cutter bar of the rough boring cutter 6 for installation, the conversion sleeve 8 is firstly placed in a cutter position hole 22, a waist-shaped hole 82 on the conversion sleeve 8 is opposite to a screw hole 28, the modularized rough boring cutter 6 with smaller specification is installed in an inner hole of the conversion sleeve 8 according to different processing stations, and positioning and fixing of the rough boring cutter 6 are realized by bolts 29 through two lateral screw holes 28 and through the waist-shaped hole 82; the balancing weight 4 is arranged in a sinking table at the upper part of the cutter bit hole 21 (or can be reversely arranged in a sinking table at the lower part of the cutter bit hole 21 according to the requirement); the fastening cushion block 5 is arranged in the cutter position hole 21 of the cutter handle sliding block 2, and the inner hexagon bolt 51 is screwed into a screw hole on the bottom surface of the fastening cushion block 5 to complete fastening connection with the balancing weight 4. The device also realizes the functions of forward rough boring, external rough boring and reverse inner hole rough boring of an inner hole, but the difference is that the small-diameter modularized rough boring cutter 6 can be applied to the device through the connection of the conversion sleeve 8, and in addition, due to the fact that the small-diameter modularized rough boring cutter 6 is used by the conversion sleeve 8, certain parts which cannot be processed by the modularized rough boring cutter 6 with larger specification originally can be processed by the modularized rough boring cutter 6 with smaller specification, such as the processing of the end face ring groove 63 in the figure.
As shown in fig. 14a and 14b, fig. 15a and 15b, and fig. 16a and 16b, the cutter device respectively realizes the functions of forward precision boring of the inner hole 61, precision boring of the outer circle 62 and precision boring of the reverse inner hole 61; the adjustable fine boring head 3 is arranged in a sinking table of a cutter position hole 21 of the cutter holder slider 2 according to different processing station requirements (the cutter head is upward during forward precise boring, the cutting edge is outwards placed, the cutter head is upward during external circle precise boring, the cutting edge is inwards placed, the cutter head is downward during reverse precise boring, and the cutting edge is outwards placed); the fastening cushion block 5 is arranged in the cutter position hole 22 of the cutter handle slide block 2, and the inner hexagon bolt 51 passes through the through hole in the fastening cushion block 5 and then is screwed into the screw hole on the bottom surface of the adjustable fine boring head 3, so that the fastening connection with the adjustable fine boring head 3 is completed; the balancing weight 4 is arranged in a sinking table at the upper part of the cutter bit hole 22 (or can be reversely arranged in a sinking table at the lower part of the cutter bit hole 22 according to the requirement); the fastening cushion block 5 is arranged in the cutter position hole 22 of the cutter handle slide block 2, and the inner hexagon bolt 51 penetrates through the through hole in the fastening cushion block 5 and is screwed in the screw hole on the bottom surface of the balancing weight 4, so that fastening connection with the balancing weight 4 is completed.
As shown in fig. 17a and 17b, the present cutter device is for realizing the precise boring function of the longer outer circular boss 64; by increasing the boring distance, the problem that the outer circle boring cutter can only bore the outer circle of the workpiece with the shorter outer circle boss is solved, and the method is specifically as follows: the boss at the bottom of the adjustable fine boring head 3 is arranged on a sinking table at the upper end part of the extension rod 7, and the adjustable fine boring head 3 and the extension rod 7 are connected and fastened by an inner hexagon bolt; the boss at the bottom of the extension rod 7 is arranged on the sinking table of the cutter position hole 21 of the cutter handle sliding block 2 and is fastened by an inner hexagon bolt 53; the extension rod 7 can have various different length sizes, and the problems that the length of the extension rod 7, the length of the adjustable fine boring head 3 and the machining stroke are larger than the thickness of a workpiece and the machining stroke can only bore the outer circle of a workpiece with a shorter outer circle boss in the conventional outer circle boring cutter can be solved.
The device meets the requirement of multidirectional conversion installation of the cutter through integrated design, can realize rough and fine boring processing of the outer circle and the inner hole of bosses with different lengths, and can realize forward and reverse processing, thereby effectively improving the processing efficiency and the precision of workpieces.
Claims (3)
1. The utility model provides an inside and outside circle boring cutter device of integration, includes handle of a knife, its characterized in that: the tool rest slide block is centrally arranged in the chute on the top surface of the tool handle, tool position holes are respectively and vertically formed in two ends of the tool rest slide block, the adjustable fine boring head or the rough boring tool with the fine boring tool is arranged in any one of the tool position holes and is positioned on the top surface or the bottom surface of the tool rest slide block, the fastening cushion block is positioned in the other tool position hole, the balancing weight is arranged on the top surface or the bottom surface of the fastening cushion block through bolts and gaskets, screw holes are formed in the bottom surface of the chute on the top surface of the tool handle at intervals, waist-shaped grooves are formed in the middle of the tool rest slide block at intervals, and bolts penetrate through the screw holes formed in the bottom surface of the chute to fasten the tool rest slide block in the chute on the top surface of the tool handle;
the device also comprises a lengthening rod, wherein the lengthening rod is arranged between a cutter position hole of the cutter holder sliding block and the adjustable fine boring head with the fine boring cutter;
the adjustable fine boring head with the fine boring cutter and the balancing weight with the lengthening rod are provided with bosses and screw holes in the middle, positioning pins are arranged on two sides of the bosses on the bottom surface of the adjustable fine boring head with the lengthening rod, the bosses and the positioning pins are respectively located in the sinking table and the positioning key grooves, the bolts penetrate the cutter position holes and are screwed into the screw holes on the bottom surface of the adjustable fine boring head with the fine boring cutter, the balancing weight or the lengthening rod, and the rough boring cutter or the fastening cushion block is arranged in the other cutter position hole and is fastened through the screw holes on the side surface of the bolt screwed into the cutter position hole.
2. The integrated inside and outside round boring cutter device according to claim 1, wherein: the top surface of the extension rod is provided with a sinking table, positioning key grooves are formed in two sides of the bottom surface of the sinking table, and the bottom surface boss of the adjustable fine boring head with the fine boring cutter and the positioning pin are respectively positioned in the sinking table and the positioning key grooves on the top surface of the extension rod.
3. The integrated inside and outside round boring cutter device according to claim 1 or 2, wherein: the device further comprises a conversion sleeve, wherein the top surface of the conversion sleeve is provided with a ring cap, the side wall of the conversion sleeve is provided with a kidney-shaped hole, the conversion sleeve is arranged in the other cutter position hole of the cutter holder sliding block, the ring cap is positioned on a sinking table of the cutter position hole, the kidney-shaped hole is opposite to a screw hole on the side surface of the cutter position hole, and the rough boring cutter is inserted into the conversion sleeve and screwed into the screw hole on the side surface of the cutter position hole through a bolt, and is fastened through the kidney-shaped hole on the side wall of the conversion sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502769.8A CN109702234B (en) | 2018-12-10 | 2018-12-10 | Integrated internal and external round boring cutter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502769.8A CN109702234B (en) | 2018-12-10 | 2018-12-10 | Integrated internal and external round boring cutter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109702234A CN109702234A (en) | 2019-05-03 |
| CN109702234B true CN109702234B (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811502769.8A Active CN109702234B (en) | 2018-12-10 | 2018-12-10 | Integrated internal and external round boring cutter device |
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| CN (1) | CN109702234B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496368A (en) * | 2020-11-27 | 2021-03-16 | 成都成林数控刀具有限公司 | Cutter body assembly of boring cutter |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201161297Y (en) * | 2008-03-14 | 2008-12-10 | 重庆齿轮箱有限责任公司 | Bridge type inverse boring tool |
| CN101670446B (en) * | 2008-09-12 | 2011-04-13 | 中国有色（沈阳）冶金机械有限公司 | Single-arm combined boring tool |
| CN201880935U (en) * | 2010-11-27 | 2011-06-29 | 瓦房店轴承砂轮制造有限公司 | Double-ear-hole special cutter |
| CN202411446U (en) * | 2011-12-15 | 2012-09-05 | 苏州勤美达精密机械有限公司 | Boring cutter with adjustable cutting head |
| CN203044931U (en) * | 2013-02-22 | 2013-07-10 | 上海松德数控刀具制造有限公司 | Double-blade bridge type adjustable heavy boring cutter |
| CN203281900U (en) * | 2013-06-16 | 2013-11-13 | 徐州锦程行星传动有限公司 | Turning and boring integrated adjustable semi-fine boring boring cutter for five-axis major planet frame |
| CN203751348U (en) * | 2013-12-31 | 2014-08-06 | 上海沃迪自动化装备股份有限公司 | Simple fine boring tool rest |
| CN104400026A (en) * | 2014-10-24 | 2015-03-11 | 常州宝菱重工机械有限公司 | Boring cutter |
| CN205437194U (en) * | 2015-12-31 | 2016-08-10 | 太重煤机有限公司 | Just, anti - integral type boring cutter |
| CN206484044U (en) * | 2017-02-28 | 2017-09-12 | 天津航天机电设备研究所 | Numerically controlled lathe lengthens tool rest |
| CN107159920A (en) * | 2017-05-02 | 2017-09-15 | 陕西柴油机重工有限公司 | A kind of processing method for ensureing spacer ring part axiality |
-
2018
- 2018-12-10 CN CN201811502769.8A patent/CN109702234B/en active Active
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