CN110153484A - A kind of Milling Process cutter holder - Google Patents
A kind of Milling Process cutter holder Download PDFInfo
- Publication number
- CN110153484A CN110153484A CN201910580917.6A CN201910580917A CN110153484A CN 110153484 A CN110153484 A CN 110153484A CN 201910580917 A CN201910580917 A CN 201910580917A CN 110153484 A CN110153484 A CN 110153484A
- Authority
- CN
- China
- Prior art keywords
- fixed
- mobile
- driving device
- gear
- hole
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
Abstract
The invention discloses a kind of Milling Process cutter holders, it includes support platform, driving device and mobile engagement component, the support platform is to support connection driving device and mobile engagement component, multiple gears are provided in the driving device, the mobile engagement component is movably disposed at the lower section of support platform and is meshed by mobile with driving device, the present invention can quickly finish fixation and unloading to cutter, control efficiency is high and stablizes, different slave unit installations can be formed into different mobile engagement components on a mobile platform, flexibility and reliability, greatly reduce processing cost;In addition different revolving speeds can be provided for different mobile engagement components in the gear that driving device is equipped with different parameters, realizes that a driving device drives more effects milling cutter.
Description
Technical field
The invention belongs to Milling Process fields, and in particular to a kind of Milling Process cutter holder.
Background technique
Milling Process is first to fix blank, and the then feed on blank with high-speed rotating milling cutter cuts out the shape of needs
Shape and feature.
Traditional milling more uses a driving device driving one milling cutter, and working efficiency is low, in addition, more milling cutter
It cannot be worked at the same time with different revolving speeds.
And the problem of fixture of existing Milling Process, there is also not easily assemblings.
It is therefore desirable to provide a kind of Milling Process cutter holder, to solve the above problems.
Summary of the invention
To achieve the above object, the invention provides the following technical scheme: a kind of Milling Process cutter holder, packet
Support platform, driving device and mobile engagement component are included, the support platform is to support connection driving device and mobile engagement
Component is provided with multiple gears in the driving device, and the mobile engagement component is movably disposed under support platform
Just and by mobile it is meshed with driving device.
Further, preferably, the driving device includes rotation axis one, gear is fixedly installed in the rotation axis one
One and gear two, the parameter of the gear one and gear two is not exactly the same, and spacing is equipped between the gear one and gear two.
Further, preferably, the mobile engagement component includes mobile engagement component one and mobile engagement component two, institute
State the left side that mobile engagement component one is movably disposed at the driving device below support platform, the mobile engagement component two
Be movably disposed at the right side of the driving device below support platform, the mobile engagement component one include mobile platform, from
Dynamic device one and fixed device, the slave unit one is spindle rotationally arranged on mobile platform, under the slave unit one
Side is fixedly installed fixed device, and the mobile engagement component two includes mobile platform, slave unit two and fixes device, described
Slave unit two is spindle rotationally arranged on mobile platform, and the lower section of the slave unit two is fixedly installed fixed device.
Further, preferably, the mobile platform includes support slot, lead screw and ball, the support slot be [type,
It is provided with through-hole on upper and lower two pieces of transverse plates bearing is fixedly mounted, T-type slide bar is fixed at the top of the support slot, it is described
The non-side close to its opening of support slot is fixed with rotation storehouse, is rotatably provided with lead screw, the lead screw in the rotation storehouse
The part that rotation storehouse is arranged in is T font, and the other end of the lead screw is fixed with handle, the middle part of the lead screw be equipped with screw thread with
Ball engagement, the ball are fixed on the lower section of support platform by connecting column.
Further, preferably, the slave unit one includes rotation axis two and gear three, the gear three, which is fixed on, to be turned
On moving axis two, the rotation axis two passes through the through-hole on support slot and is fixed in the bearing in through-hole;The driven dress
Setting two includes rotation axis three and gear four, and the gear four is fixed in rotation axis three, and the rotation axis three passes through on support slot
Through-hole and be fixed in the bearing in through-hole.
Further, preferably, the fixed device includes clamping storehouse, the end in the clamping storehouse is equipped with circular hole to insert
Enter milling cutter, channel is equipped in the clamping storehouse sliding setting wirerope, is provided with clamping device in the clamping storehouse, it is described
The upper end of clamping device is connected by pillar with clamping storehouse.
Further, preferably, the clamping device includes left supporting rod and right supporting rod, the left supporting rod and right folder
The setting of bar cross-articulation is held, the left supporting rod and right supporting rod are hinged with sliding sleeve, the left clamping far from one end of milling cutter
Bar and right supporting rod are equipped with chuck close to one end of milling cutter, and two sliding sleeves are slidably arranged on sliding bar, two institutes
It states and is additionally provided with spring between sliding sleeve, on sliding bar, the both ends of the sliding bar are fixed in fixing seat the spring pocket, institute
The both ends for stating fixing seat extend outwardly along sliding bar three-dimensional axial direction and are fixedly connected with clamping storehouse, the middle part of the fixing seat
It is provided with centre bore.
Further, preferably, the pillar is cylindrical cavity, the channel in cylindrical cavity connection clamping storehouse and fixation
Centre bore on seat, one end of the wirerope are fixedly connected with the sliding sleeve in left side, and the other end of the wirerope passes through pillar
Cavity, the channel in left side, circular hole, the channel on right side and the cavity of pillar and the sliding sleeve on right side are connected.
Further, preferably, being fixedly installed fixed disk below the fixed device, the fixed disk is rectangle,
It is furnished with multiple bolts hole thereon to be fixedly connected with fixed device, is provided through limit hole in the transverse direction of the fixed disk
Two, the center of the fixed disk is additionally provided with round tube hole, is equipped with rubber pad in round tube hole, the inner periphery of the rubber pad is straight
Diameter is identical as the diameter of milling cutter, and limit hole one corresponding with limit hole two is provided on the milling cutter, and the milling cutter passes through rubber
It pads and is fixed by the gag lever post of insertion limit hole two and limit hole one.
Further, preferably, being provided with driving motor at the top of the support platform, the output end of the driving motor
It is fixedly linked with the rotation axis one of driving device, it is sliding that the both ends of the support platform are provided with the T-type to match with T-type slide bar
Slot.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can quickly finish fixation and unloading to cutter, and control efficiency is high and stablizes, will be different driven
Device installation can form different mobile engagement components on a mobile platform, and flexibility and reliability greatly reduces processing cost;Separately
The gear that external driving device is equipped with different parameters can provide different revolving speeds for different mobile engagement components, realize a drive
Dynamic device drives more effects milling cutter.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention;
Fig. 2 is one schematic diagram of mobile engagement component of the invention;
Fig. 3 is two schematic diagram of mobile engagement component of the invention;
Fig. 4 is mobile platform schematic diagram of the invention;
Fig. 5 is inventive drive means schematic diagram;
Fig. 6 is one schematic diagram of slave unit of the invention;
Fig. 7 is two schematic diagram of slave unit of the invention;
Fig. 8 is fixation device and milling cutter schematic diagram of the invention;
Fig. 9 is clamping device schematic diagram of the invention;
Figure 10 is fixed disk schematic diagram of the invention;
Figure 11 is milling cutter schematic diagram of the invention;
1, driving motor;2, support platform;21, T-type sliding slot;3, driving device;31, rotation axis one;32, gear one;33,
Gear two;4, mobile platform;41, support slot;42, T-type slide bar;43, storehouse is rotated;44, lead screw;45, ball;46, handle;47,
Connecting column;5, slave unit one;51, rotation axis two;52, gear three;6, slave unit two;61, rotation axis three;62, gear four;
7, fixed device;71, storehouse is clamped;72, wirerope;73, pillar;74, channel;8, milling cutter;81, limit hole one;9, clamping device;
91, left supporting rod;92, right supporting rod;93, sliding bar;94, chuck;95, fixing seat;96, centre bore;97, sliding sleeve;10, fixed
Disk;101, limit hole two;102, rubber pad;11, gag lever post.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-11 is please referred to, the present invention provides a kind of technical solution: a kind of Milling Process cutter holder comprising
Support platform 2, driving device 3 and mobile engagement component, the support platform 2 is to support connection driving device 3 and movement to nibble
Seaming element is provided with multiple gears in the driving device 3, and the mobile engagement component is movably disposed at support platform 2
Lower section and by movement be meshed with driving device 3.
Wherein, the driving device 3 includes rotation axis 1, is fixedly installed one 32 He of gear in the rotation axis 1
The parameter of gear 2 33, the gear 1 and gear 2 33 is not exactly the same, sets between the gear 1 and gear 2 33
There is a spacing, the parameter of gear 1 and gear 2 33 is not exactly the same, to provide different revolving speeds for mobile engagement component.
As preferred embodiment, the mobile engagement component includes mobile engagement component one and mobile engagement component two,
The mobile engagement component one is movably disposed at the left side of the driving device 3 of 2 lower section of support platform, the movement engagement group
Part two is movably disposed at the right side of the driving device 3 of 2 lower section of support platform, and the mobile engagement component one includes mobile flat
Platform 4, slave unit 1 and fixed device 7, the slave unit 1 is spindle rotationally arranged on mobile platform 4, described driven
The lower section of device 1 is fixedly installed fixed device 7, and the mobile engagement component two includes mobile platform 4, slave unit 26
With fixed device 7, the slave unit 26 is spindle rotationally arranged on mobile platform 4, to make slave unit 1 and driven
Device 26 close to driving device 3 and engages in different directions, and the lower section of the slave unit 26 is fixedly installed solid
Determine device 7.
On the basis of the above embodiments, the mobile platform 4 includes support slot 41, lead screw 44 and ball 45, the branch
Supportting slot 41 is that [type is provided with through-hole on upper and lower two pieces of transverse plates bearing is fixedly mounted, and the top of the support slot 41 is solid
Surely there is T-type slide bar 42, the non-side close to its opening of support slot 41 is fixed with rotation storehouse 43, can turn in the rotation storehouse 43
Dynamic is provided with lead screw 44, and the part that rotation storehouse 43 is arranged in the lead screw 44 is T font, and the other end of the lead screw 44 is fixed
There is handle 46, the middle part of the lead screw 44 is equipped with screw thread and ball 45 cooperates, and the ball 45 is fixed on branch by connecting column 47
The lower section for supportting platform 2, using lead screw ball as driving member, lead screw 44, which not only rotates, to be moved but also moves in a straight line, and is smoothly promoted
Support slot 41.
Such as Fig. 2 and 3, the slave unit 1 includes rotation axis 2 51 and gear 3 52, and the gear 3 52, which is fixed on, to be turned
On moving axis 2 51, the rotation axis 2 51 passes through the through-hole on support slot 41 and is fixed in the bearing in through-hole;It is described
Slave unit 26 includes rotation axis 3 61 and gear 4 62, and the gear 4 62 is fixed in rotation axis 3 61, the rotation axis
3 61 pass through the through-hole on support slot 41 and are fixed in the bearing in through-hole, and mobile platform 4 is fabricated to general part and is matched
Different mobile engagement components can be formed by closing different slave units.
In the present embodiment, the fixed device 7 includes clamping storehouse 71, and the end in the clamping storehouse 71 is equipped with circular hole to insert
Enter milling cutter 8, channel 74 is equipped in the clamping storehouse 71 to slide setting wirerope 72, is provided with clamping in the clamping storehouse 71
The upper end of device 9, the clamping device 9 is connected by pillar 73 with clamping storehouse 71.
Further, the clamping device 9 includes left supporting rod 91 and right supporting rod 92, the left supporting rod 91 and right folder
The setting of 92 cross-articulation of bar is held, the left supporting rod 91 and the one end of right supporting rod 92 far from milling cutter 8 are hinged with sliding sleeve 97, institute
It states left supporting rod 91 and right supporting rod 92 and is equipped with chuck 94 close to one end of milling cutter 8, can preferably clamp milling cutter, two institutes
It states sliding sleeve 97 to be slidably arranged on sliding bar 93, is additionally provided with spring between two sliding sleeves 97, the spring pocket is in cunning
In lever 93, the both ends of the sliding bar 93 are fixed in fixing seat 95, and the both ends of the fixing seat 95 are three-dimensional along sliding bar 93
Axial direction extends outwardly and is fixedly connected with clamping storehouse 71, and the middle part of the fixing seat 95 is provided with centre bore 96.
On the basis of the above embodiments, the pillar 73 is cylindrical cavity, cylindrical cavity connection clamping storehouse 71
Centre bore 96 on channel 74 and fixing seat 95, one end of the wirerope 72 are fixedly connected with the sliding sleeve 97 in left side, the steel wire
The other end of rope 72 pass through the cavity of pillar 73, the channel 74 in left side, circular hole, the channel 74 on right side and pillar 73 cavity with
The sliding sleeve 97 on right side is connected, in this way, driving the wirerope being in contact with it when milling cutter 8 is inserted into the circular hole of the end in clamping storehouse 71
72 are moved, to keep two sliding sleeves 97 close to each other and then two chucks 94 is made to clamp milling cutter, in addition chuck can be made into
The arc-shaped that milling cutter matches.
In the present embodiment, the lower section of the fixed device 7 is fixedly installed fixed disk 10, and the fixed disk 10 is rectangle,
It is furnished with multiple bolts hole thereon to be fixedly connected with fixed device 7, is provided through limit in the transverse direction of the fixed disk 10
Hole 2 101, the center of the fixed disk 10 are additionally provided with round tube hole, are equipped with rubber pad 102, the rubber pad in round tube hole
102 inner periphery diameter is identical as the diameter of milling cutter 8, and limit hole one corresponding with limit hole 2 101 is provided on the milling cutter 8
81, the milling cutter 8 passes through rubber pad 102 and is limited by the gag lever post 11 of insertion limit hole 2 101 and limit hole 1
Fixed, when milling cutter is clamped by chuck 94, the spring between two sliding sleeves 97 can be compressed, and reaction and sliding sleeve, be inserted at this time
Enter and is fixed with gag lever post 11.
In the present embodiment, the top of the support platform 2 is provided with driving motor 1, the output end of the driving motor 1 with
The rotation axis 1 of driving device 3 is fixedly linked, and the both ends of the support platform 2 are provided with the T-type to match with T-type slide bar 42
Sliding slot 21.
The present invention can quickly finish fixation and unloading to cutter, and control efficiency is high and stablizes, will be different driven
Device installation can form different mobile engagement components on a mobile platform, and flexibility and reliability greatly reduces processing cost;Separately
The gear that external driving device 3 is equipped with different parameters can provide different revolving speeds for different mobile engagement components, realize one
Driving device drives more effects milling cutter.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of Milling Process cutter holder, which is characterized in that it includes support platform (2), driving device (3) and moves
Dynamic engagement component, the support platform (2) is to support connection driving device (3) and mobile engagement component, the driving device
(3) multiple gears are provided on, the mobile engagement component is movably disposed at the lower section of support platform (2) and passes through movement
It is meshed with driving device (3).
2. a kind of Milling Process cutter holder according to claim 1, which is characterized in that the driving device
(3) include rotation axis one (31), gear one (32) and gear two (33), the tooth are fixedly installed on the rotation axis one (31)
The parameter for taking turns one (32) and gear two (33) is not exactly the same, and spacing is equipped between the gear one (32) and gear two (33).
3. a kind of Milling Process cutter holder according to claim 1, which is characterized in that the movement engagement group
Part includes mobile engagement component one and mobile engagement component two, and the mobile engagement component one is movably disposed at support platform
(2) left side of the driving device (3) below, the mobile engagement component two are movably disposed at below support platform (2)
The right side of driving device (3), the mobile engagement component one include mobile platform (4), slave unit one (5) and fixed device
(7), the slave unit one (5) is spindle rotationally arranged on mobile platform (4), and the lower section of the slave unit one (5) is fixed
It is provided with fixed device (7), the mobile engagement component two includes mobile platform (4), slave unit two (6) and fixed device
(7), the slave unit two (6) is spindle rotationally arranged on mobile platform (4), and the lower section of the slave unit two (6) is fixed
It is provided with fixed device (7).
4. a kind of Milling Process cutter holder according to claim 3, which is characterized in that the mobile platform
(4) include support slot (41), lead screw (44) and ball (45), the support slot (41) be [type, on upper and lower two pieces of transverse plates
Through-hole is provided with bearing is fixedly mounted, is fixed with T-type slide bar (42) at the top of the support slot (41), the support slot (41)
The non-side close to its opening is fixed with rotation storehouse (43), is rotatably provided with lead screw (44), institute in the rotation storehouse (43)
It is T font that lead screw (44) setting, which is stated, in the part of rotation storehouse (43), and the other end of the lead screw (44) is fixed with handle (46), institute
The middle part for stating lead screw (44) cooperates equipped with screw thread and ball (45), and the ball (45) is fixed on support by connecting column (47) and puts down
The lower section of platform (2).
5. a kind of Milling Process cutter holder according to claim 3, which is characterized in that the slave unit one
It (5) include rotation axis two (51) and gear three (52), the gear three (52) is fixed in rotation axis two (51), the rotation axis
Two (51) pass through the through-hole on support slot (41) and are fixed in the bearing in through-hole;The slave unit two (6) includes
Rotation axis three (61) and gear four (62), the gear four (62) are fixed in rotation axis three (61), the rotation axis three (61)
It through-hole on support slot (41) and is fixed in the bearing in through-hole.
6. a kind of Milling Process cutter holder according to claim 3, which is characterized in that the fixed device
(7) include clamping storehouse (71), it is described clamping storehouse (71) end be equipped with circular hole to be inserted into milling cutter (8), the clamping storehouse (71)
Interior be equipped with channel (74) are provided with clamping device (9), the folder in the clamping storehouse (71) to slide setting wirerope (72)
The upper end for holding device (9) is connected by pillar (73) with clamping storehouse (71).
7. a kind of Milling Process cutter holder according to claim 6, which is characterized in that the clamping device
It (9) include left supporting rod (91) and right supporting rod (92), the left supporting rod (91) and right supporting rod (92) cross-articulation are arranged,
The left supporting rod (91) and right supporting rod (92) are hinged with sliding sleeve (97) far from the one end of milling cutter (8), the left supporting rod
(91) it is equipped with chuck (94) with right supporting rod (92) close to the one end of milling cutter (8), two sliding sleeves (97) slide setting
On sliding bar (93), it is additionally provided with spring between two sliding sleeves (97), the spring pocket is described on sliding bar (93)
The both ends of sliding bar (93) are fixed on fixing seat (95), and the both ends of the fixing seat (95) are along the three-dimensional axial direction side of sliding bar (93)
To extending outwardly and being fixedly connected with clamping storehouse (71), centre bore (96) are provided in the middle part of the fixing seat (95).
8. a kind of Milling Process cutter holder according to claim 6, which is characterized in that the pillar (73) is
Cylindrical cavity, the channel (74) of cylindrical cavity connection clamping storehouse (71) and the centre bore (96) on fixing seat (95), it is described
One end of wirerope (72) is fixedly connected with the sliding sleeve (97) in left side, and the other end of the wirerope (72) passes through the chamber of pillar (73)
Body, the channel (74) in left side, circular hole, the channel (74) on right side and the cavity of pillar (73) and the sliding sleeve (97) on right side are connected.
9. a kind of Milling Process cutter holder according to claim 3, which is characterized in that the fixed device
(7) be fixedly installed below fixed disk (10), the fixed disk (10) is rectangle, be furnished with thereon multiple bolts hole to it is solid
Determine device (7) to be fixedly connected, is provided through limit hole two (101), the fixed disk in the transverse direction of the fixed disk (10)
(10) center is additionally provided with round tube hole, is equipped with rubber pad (102) in round tube hole, the inner periphery of the rubber pad (102)
Diameter is identical as the diameter of milling cutter (8), is provided with limit hole one (81) corresponding with limit hole two (101) on the milling cutter (8),
The milling cutter (8) pass through rubber pad (102) and by insertion limit hole two (101) and limit hole one (81) gag lever post (11) into
Row limit is fixed.
10. a kind of Milling Process cutter holder according to claim 1, which is characterized in that the support platform
(2) it is provided at the top of driving motor (1), the output end of the driving motor (1) and the rotation axis one (3) of driving device (3)
It is fixedly linked, the both ends of the support platform (2) are provided with the T-type sliding slot (21) to match with T-type slide bar (42).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910580917.6A CN110153484B (en) | 2019-06-27 | 2019-06-27 | Cutter fixing device for milling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910580917.6A CN110153484B (en) | 2019-06-27 | 2019-06-27 | Cutter fixing device for milling |
Publications (2)
Publication Number | Publication Date |
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CN110153484A true CN110153484A (en) | 2019-08-23 |
CN110153484B CN110153484B (en) | 2020-06-30 |
Family
ID=67637117
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Application Number | Title | Priority Date | Filing Date |
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CN201910580917.6A Expired - Fee Related CN110153484B (en) | 2019-06-27 | 2019-06-27 | Cutter fixing device for milling |
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CN201275639Y (en) * | 2008-10-08 | 2009-07-22 | 李小辉 | Multishaft device of NC milling machine |
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CN204075731U (en) * | 2014-08-27 | 2015-01-07 | 江苏瑞普机床有限公司 | Multi-station digital-controlled hinge top gem of a girdle-pendant lathe |
CN105057738A (en) * | 2015-07-21 | 2015-11-18 | 浙江大学 | Inner cavity drilled multi-cutter machining device |
CN105563194A (en) * | 2016-01-15 | 2016-05-11 | 汕头大学 | Automatic tool changer for scissor-fork mechanism and modularized design method for automatic tool changer |
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2019
- 2019-06-27 CN CN201910580917.6A patent/CN110153484B/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443141A (en) * | 1982-02-22 | 1984-04-17 | Cooper Industries | Pinless pressure foot for machine tool |
CN2868517Y (en) * | 2006-03-03 | 2007-02-14 | 李小辉 | Multiple milling head for numerical control milling machine |
CN101314208A (en) * | 2007-05-31 | 2008-12-03 | 兄弟工业株式会社 | Tool replacing device |
CN201275639Y (en) * | 2008-10-08 | 2009-07-22 | 李小辉 | Multishaft device of NC milling machine |
CN201906871U (en) * | 2010-12-15 | 2011-07-27 | 安徽中鼎精工技术有限公司 | Milling clamp for R grooves on fork bar framework of automobile |
CN202010920U (en) * | 2011-04-14 | 2011-10-19 | 杭州福朗机电科技有限公司 | On-site machining device for rotating wheel of water turbine |
CN204075731U (en) * | 2014-08-27 | 2015-01-07 | 江苏瑞普机床有限公司 | Multi-station digital-controlled hinge top gem of a girdle-pendant lathe |
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