CN113714421A - Intelligent steel bar bending machine for machining lower side door hinge - Google Patents
Intelligent steel bar bending machine for machining lower side door hinge Download PDFInfo
- Publication number
- CN113714421A CN113714421A CN202111038229.0A CN202111038229A CN113714421A CN 113714421 A CN113714421 A CN 113714421A CN 202111038229 A CN202111038229 A CN 202111038229A CN 113714421 A CN113714421 A CN 113714421A
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- steel bar
- bending
- shaft
- bar bender
- lower side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/004—Bending wire other than coiling; Straightening wire by means of press-type tooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses an intelligent steel bar bender for processing a lower side door hinge, which comprises a steel bar bender body, wherein a supporting box is arranged at the edge of the front side of the upper surface of the steel bar bender body, a bending driving mechanism is arranged in the supporting box, a abdicating hole is arranged above the supporting box in a penetrating way, a driving shaft of the bending driving mechanism penetrates through the abdicating hole and is inserted at the lower end of a bending shaft, a limiting plate is arranged at the upper end of the bending shaft through a positioning nail, the vertical side plate surface of the limiting plate faces to the left, a steel bar straightening mechanism is arranged on the upper surface of the steel bar bender body, a discharging hole of the steel bar straightening mechanism is led to a bending feeding hole, a control box and a control panel are also arranged on the upper surface of the steel bar bender body, and the control box and the control panel are both arranged on the right side of the steel bar straightening mechanism; according to the invention, the specific length of the pressure cylinder for pulling the transmission rack to move is calculated by driving the gear and the rack to do reciprocating motion through the pressure cylinder, so that the accurate calculation and bending operation of the central angle of the bending angle of the reinforcing steel bar are realized, and the intellectualization of the bending of the reinforcing steel bar is realized.
Description
Technical Field
The invention belongs to the technical field of steel bar bending equipment, particularly relates to steel bar bending for a lower side door hinge, and particularly relates to an intelligent steel bar bending machine for processing the lower side door hinge.
Background
The universal open wagon is a main wagon model in railway wagons in China, and accounts for about 60% of the quantity of all railway wagons in China. Twelve lower side door frames are arranged on the side wall of the general open wagon carriage, and a lower side door is fixedly arranged in each lower side door frame.
The lower side door folding seats are positioned at the upper parts of the lower side door plates and are hinge rotating shafts connected with the lower side door folds, a transverse channel steel is welded on the inner wall of the freight open wagon on the upper sides of the lower side doors, the lower side door folding seats are transversely distributed and welded on the channel steel, and the lower side door folds are connected with the folding seats through round pins; however, the ends of the reinforcing steel bars distributed on the lower side door hinge need to be bent by a certain angle to be matched with the lower side door hinge and the hinge seat for use and assembly, all bending machines in the prior art bend through a motor driving gear or a worm, the central angle of the bending angle is difficult to control, the reinforcing steel bars also comprise cylindrical reinforcing steel bars, channel-shaped reinforcing steel bars and rectangular reinforcing steel bars, and the inner warp during bending is also inconsistent.
Patent application No. CN202021820639.1, the contents of which are: the application relates to an automatic discharging steel bar bender for processing a lower side door hinge, which relates to the technical field of steel bar benders and comprises a bender main body, wherein a positioning disc is rotatably connected on the bender main body, a plurality of positioning blocks are arranged on the positioning disc, positioning grooves are arranged on the positioning blocks, a placing groove for embedding the positioning blocks is arranged on the positioning disc, a fixing column is arranged at one end of each positioning block, a fixing groove for embedding the fixing column is arranged on the positioning disc, the fixing groove is communicated with the placing groove, a fixing device for connecting the fixing column with the fixing groove is arranged in the fixing groove, when the positioning groove is damaged and needs to be maintained and replaced, the fixing between the fixing column and the fixing groove is released, the positioning block is slid, so that the positioning block is separated from the placing groove, and a new positioning block is replaced, therefore, maintenance and replacement of a single positioning groove are realized, the whole positioning disc does not need to be replaced, and resources are saved.
Although the aforesaid patent sets up the locating piece of removable formula, the angle is uncontrollable when actually bending, can't be according to the crooked internal diameter that corresponds of the reinforcing bar of different grade type, is not suitable for the production of lower side door folding paper.
Disclosure of Invention
In view of the problems proposed by the background art, the technical scheme adopted by the invention is as follows:
an intelligent steel bar bender for processing a lower side door hinge comprises a steel bar bender body, wherein a supporting box is installed at the front side edge of the upper surface of the steel bar bender body, a bending driving mechanism is installed in the supporting box, a yielding hole is formed in the upper portion of the supporting box in a penetrating mode, a driving shaft of the bending driving mechanism penetrates through the yielding hole and is inserted at the lower end of a bending shaft, the bending driving mechanism drives the bending shaft to rotate in a positive and negative mode through the driving shaft, a limiting plate is installed at the upper end of the bending shaft through a positioning nail and is an L-shaped structural plate, the vertical side plate of the limiting plate faces to the left, a bending feeding port is formed between the vertical side plate of the limiting plate and the left side of the bending shaft, a steel bar straightening mechanism is arranged on the upper surface of the steel bar bender body, a discharging port of the steel bar straightening mechanism leads to the bending feeding port, a control box and a control panel are further arranged on the upper surface of the steel bar bender body, the control box and the control panel are both installed on the right side of the steel bar straightening mechanism, and the bending driving mechanism, the steel bar straightening mechanism and the control panel are all electrically connected with the control box.
Preferably, the bending driving mechanism further comprises a pressure cylinder, a transmission rack and a transmission gear, the pressure cylinder is fixed on the steel bar bending machine body, the driving end of the pressure cylinder faces to the left, the right end of the transmission rack is connected to the driving end of the pressure cylinder, teeth of the transmission rack are arranged on the front side, rack guide rails are installed on the left side and the right side of the rear side in the support box, the transmission rack is movably installed in guide grooves of the rack guide rails, the transmission gear is fixedly installed in the middle section of a driving shaft, the lower end of the driving shaft is movably installed on the steel bar bending machine body through a bearing, the teeth on the front side of the transmission rack are meshed with the transmission gear, and the pressure cylinder drives the bending shaft to rotate forwards and backwards through the reciprocating motion of the transmission rack and the transmission gear.
Preferably, the drive shaft includes hexagonal shaft section and cylinder shaft section, open at crooked axle lower surface intermediate position has the hexagonal hole, the cooperation of the hexagonal shaft section of drive shaft is inserted in the hexagonal hole, the cylinder shaft section of drive shaft passes the hole of stepping down and is connected to the angle bending machine body.
Preferably, the rotating circumference of the transmission gear is consistent with the circumference of the bending shaft, and the length of the tooth on the front side of the transmission rack is greater than the rotating circumference of the transmission gear.
Preferably, the pressure cylinder is a hydraulic cylinder, and a control switch of the hydraulic cylinder is electrically connected with the control box.
Preferably, the reinforcing steel bar straightening mechanism comprises a plurality of groups of double-wheel straightening frames, the plurality of groups of double-wheel straightening frames are arranged in a front-back direction, and feed inlets and discharge outlets of the plurality of groups of double-wheel straightening frames are communicated.
Preferably, the plurality of groups of double-wheel straightening frames comprise two side plates and two straightening wheels, the two straightening wheels are arranged between the two side plates in an up-down parallel mode through a central shaft, grooves matched with the shapes of the outer surfaces of the steel bars are formed in the middle sections of the two straightening wheels, and the grooves form the shapes of the sections of the steel bars.
Preferably, the positioning nail is a regular hexagonal column, the upper end of the positioning nail is provided with an installation column, and the cross section of the installation column is larger than that of the positioning nail.
Preferably, a base plate is further mounted under the control panel, the side face of the base plate is a right-angled triangle, and the control panel is mounted on the inclined side face of the base plate.
Preferably, the calculation formula for calculating the moving length of the transmission rack by the steel bar bender according to the central angle of the bending angle is as follows:
wherein, L is the length of the transmission rack, pi is the circumferential ratio of 3.14, r is the radius of the bending shaft, and n is the central angle of the required bending angle.
By adopting the technical scheme of the invention, the following beneficial effects are obtained:
1. the method calculates and obtains the specific length of the pressure cylinder for pulling the transmission rack to move by driving the gear and the rack to be pulled in the forward direction through the pressure cylinder, and calculates the axial arc length of the rotation shaft, namely the perimeter distance, of the bending shaft in the reverse direction through the known central angle of the required bending angle, so that the length of the transmission rack to be pulled is obtained, the accurate calculation and the bending operation of the central angle of the bending angle of the reinforcing steel bar are realized, and the intelligence of the reinforcing steel bar bending machine is realized; the reverse pulling of the gear and the rack can realize that the same steel bar is bent by the device for fixing the angle, the bending shaft rotates reversely by the reverse pulling, the central angle of the bent angle returns to the designated angle, and finally the intelligent control is realized through the control box and the control panel;
2. the straightening wheels can be replaced according to different types of reinforcing steel bars, so that the grooves in the straightening wheels are matched with the cross sections of the corresponding reinforcing steel bars, the bent and deformed reinforcing steel bars can be straightened and corrected with high precision, the regular shape of the bent reinforcing steel bars is ensured, and the processing precision requirement and the assembly requirement are met.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a bent steel bar according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a bending driving mechanism according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of an embodiment of the present invention;
the embodiment of the invention mainly comprises the following component symbols:
the steel bar bender comprises a steel bar bender body-1, a supporting box-101, a base plate-102, a bending driving mechanism-2, a driving shaft-201, a pressure cylinder-202, a transmission rack-203, a rack guide rail-204, a transmission gear-205, a bending shaft-3, a limiting plate-4, a positioning nail-5, a steel bar straightening mechanism-6, a double-wheel straightening frame-601, a side plate-602, a straightening wheel-603, a groove-604, a control box-7 and a control panel-8.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 2, an intelligent steel bar bender for processing a hinge of a lower side door comprises a steel bar bender body 1, wherein a supporting box 101 is installed at the front side edge of the upper surface of the steel bar bender body 1, a bending driving mechanism 2 is installed in the supporting box 101, a yielding hole is formed in the upper side of the supporting box 101 in a penetrating mode, a driving shaft 201 of the bending driving mechanism 2 penetrates through the yielding hole and is inserted at the lower end of a bending shaft 3, the bending driving mechanism 2 drives the bending shaft 3 to rotate forward and backward through the driving shaft 201, a limiting plate 4 is installed at the upper end of the bending shaft 3 through a positioning nail 5, the limiting plate 4 is an L-shaped structural plate, a vertical side plate 602 of the limiting plate 4 faces left, a bending feeding port is formed between the vertical side plate 602 of the limiting plate 4 and the left side of the bending shaft 3, and a steel bar straightening mechanism 6 is arranged on the upper surface of the steel bar bender body 1, the discharge gate of angle straightener 6 accesss to crooked pan feeding mouth, 1 upper surface of angle bender body still is provided with control box 7 and controls panel 8, 6 right sides at angle straightener are all installed to control box 7 and control panel 8, crooked actuating mechanism 2, angle straightener 6, control panel 8 all with control box 7 electric connection, control panel 8 and contain display screen and control key.
The bending driving mechanism 2 further comprises a pressure cylinder 202, a transmission rack 203 and a transmission gear 205, the pressure cylinder 202 is fixed on the steel bar bending machine body 1, the driving end of the pressure cylinder 202 faces to the left, the right end of the transmission rack 203 is connected to the driving end of the pressure cylinder 202, teeth of the transmission rack 203 are arranged on the front side, rack guide rails 204 are installed on the left side and the right side of the inner rear side of the supporting box 101, the transmission rack 203 is movably installed in guide grooves of the rack guide rails 204, the transmission gear 205 is fixedly installed in the middle section of the driving shaft 201, the lower end of the driving shaft 201 is movably installed on the steel bar bending machine body 1 through a bearing, the teeth on the front side of the transmission rack 203 are meshed with the transmission gear 205, and the pressure cylinder 202 drives the bending shaft 3 to rotate forwards and backwards through reciprocating motion of the transmission rack 203 and the transmission gear 205.
The method calculates and obtains the specific length of the pressure cylinder 202 for pulling the transmission rack 203 to move by a mode that the pressure cylinder 202 drives the gear and the rack to pull forward, and calculates the axial arc length, namely the perimeter distance, of the rotation shaft 3 in the reverse direction by knowing the central angle of the required bending angle, thereby obtaining the length of the transmission rack 203 to be pulled, realizing the accurate calculation and bending operation of the central angle of the bending angle of the steel bar and realizing the intellectualization of the steel bar bending machine; and the reverse pulling of gear and rack can realize that with the reinforcing bar after using this equipment crooked fixed angle, make bending axis 3 antiport through the reverse pulling, will have already bent the central angle of angle and return appointed angle, finally realize intelligent control through control box 7 and control panel 8.
The installation of setting to hexagonal axle and hexagonal hole has realized that the installation of crooked axle 3 is fixed and prevent that the rotation problem of skidding takes place, and stability is high during the bending, has also realized the convertibility of crooked axle 3.
The rotating circumference of the transmission gear 205 is consistent with the circumference of the bending shaft 3, and the length of the teeth on the front side of the transmission rack 203 is larger than the rotating circumference of the transmission gear 205.
The axial diameter of the transmission gear 205 and the tooth length of the transmission rack 203 are matched with the diameter of the bending shaft 3, so that the rotating circumference of the transmission gear 205 can be matched with the circumference of the bending shaft 3, and the calculation accuracy and the accuracy of the central angle of the bending angle are improved.
The pressure cylinder 202 is a hydraulic cylinder, and a control switch of the hydraulic cylinder is electrically connected with the control box 7.
The reinforcing steel bar straightening mechanism 6 comprises a plurality of groups of double-wheel straightening frames 601, the groups of double-wheel straightening frames 601 are arranged in the front-back direction, and feed inlets and discharge outlets of the groups of double-wheel straightening frames 601 are communicated.
The plurality of groups of double-wheel straightening frames 601 comprise two side plates 602 and two straightening wheels 603, the two straightening wheels 603 are arranged between the two side plates 602 in an up-down parallel mode through a central shaft, grooves 604 matched with the shape of the outer surface of a steel bar are formed in the middle sections of the two straightening wheels 603, and the two grooves 604 form the shape of the section of the steel bar.
The straightening wheels 603 can be replaced according to different types of steel bars, so that the grooves 604 in the straightening wheels 603 are matched with the cross section shapes of the corresponding steel bars, the bent and deformed steel bars can be straightened and corrected with high precision, the shape of the bent steel bars is regular, and the processing precision requirement and the assembly requirement are met.
The location nail 5 is the regular hexagon post, location nail 5 upper end is provided with the erection column, and the cross-section of erection column is greater than the cross-section of location nail 5.
Conveniently dismantle limiting plate 4 and change bending axis 3.
A base plate 102 is further mounted under the control panel 8, the side surface of the base plate 102 is a right-angled triangle, and the control panel 8 is mounted on the inclined side surface of the base plate 102.
The calculation formula of the steel bar bender for calculating the moving length of the transmission rack 203 according to the central angle of the bending angle is as follows:
wherein, L is the moving length of the transmission rack 203, pi is the circumferential ratio 3.14, r is the radius of the bending shaft 3, and n is the central angle of the required bending angle.
Detailed description of the preferred embodiment 1
Assuming that the type of the steel bar is determined, the bending shaft, the transmission gear and the transmission rack with corresponding sizes are replaced, if the radius r of the bending shaft is 5cm, the central angle of the required bending angle is 60 degrees, and the steel bar type bending device can be obtained according to the structure and the calculation mode:
then L is 5.23, which means that the length of movement of the rack pulled by the cylinder is 5.23 cm.
The verification of the above specific embodiment 1 is: when the radius r of the bending axis is 5cm, the circumference C is 2 pi r and is 31.4cm, and the central angle of the bending angle is calculated by the following formula:
then n is 60 °.
The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an intelligent angle bending machine for processing lower side door is folded paper, includes angle bending machine body, its characterized in that: the steel bar bender is characterized in that a supporting box is installed at the front side edge of the upper surface of a steel bar bender body, a bending driving mechanism is installed in the supporting box, a abdicating hole is formed in the upper portion of the supporting box in a penetrating mode, a driving shaft of the bending driving mechanism penetrates through the abdicating hole and is inserted at the lower end of a bending shaft, the bending driving mechanism drives the bending shaft to rotate in a positive and negative mode through the driving shaft, a limiting plate is installed at the upper end of the bending shaft through a positioning nail, the limiting plate is an L-shaped structural plate, the vertical side plate of the limiting plate faces to the left, a bending feeding port is formed between the vertical side plate of the limiting plate and the left side of the bending shaft, a steel bar straightening mechanism is arranged on the upper surface of the steel bar bender body, a discharging port of the steel bar straightening mechanism is led to the bending feeding port, a control box and a control panel are further arranged on the upper surface of the steel bar bender body, and the control panel are both installed on the right side of the straightening mechanism, the bending driving mechanism, the reinforcing steel bar straightening mechanism and the control panel are electrically connected with the control box.
2. The intelligent steel bar bender for processing lower side door hinge according to claim 1, characterized in that: the bending driving mechanism further comprises a pressure cylinder, a transmission rack and a transmission gear, the pressure cylinder is fixed on the steel bar bender body, the driving end of the pressure cylinder faces to the left, the right end of the transmission rack is connected to the driving end of the pressure cylinder, teeth of the transmission rack are arranged on the front side, a rack guide rail is installed on the left side and the right side of the rear side in the support box, the transmission rack is movably installed in a guide groove of the rack guide rail, the transmission gear is fixedly installed in the middle section of a driving shaft, the lower end of the driving shaft is movably installed on the steel bar bender body through a bearing, the teeth on the front side of the transmission rack are meshed with the transmission gear, and the pressure cylinder drives the bending shaft to rotate forwards and reversely through the reciprocating motion of the transmission rack and the transmission gear.
3. The intelligent steel bar bender for processing the lower side door hinge according to claim 2, wherein: the drive shaft includes hexagonal shaft section and cylinder shaft section, crooked axle lower surface intermediate position is opened there is the hexagonal hole, the cooperation of the hexagonal shaft section of drive shaft is inserted in the hexagonal hole, the cylinder shaft section of drive shaft passes the jogged joint to the angle bending machine body on.
4. The intelligent steel bar bender for processing the lower side door hinge according to claim 3, characterized in that: the rotating perimeter of the transmission gear is consistent with the perimeter of the bending shaft, and the length of the tooth on the front side of the transmission rack is larger than the rotating perimeter of the transmission gear.
5. The intelligent steel bar bender for processing lower side door hinge according to claim 4, characterized in that: the pressure cylinder is a hydraulic cylinder, and a control switch of the hydraulic cylinder is electrically connected with the control box.
6. The intelligent steel bar bender for processing lower side door hinge according to claim 5, characterized in that: the steel bar straightening mechanism comprises a plurality of groups of double-wheel straightening frames, the double-wheel straightening frames are arranged in a front-back direction, and a feed port and a discharge port of the double-wheel straightening frames are communicated.
7. The intelligent steel bar bender for processing lower side door hinge according to claim 6, characterized in that: the double-wheel straightening frame comprises two side plates and two straightening wheels, the two straightening wheels are arranged between the two side plates in an up-down parallel mode through a central shaft, the middle sections of the straightening wheels are provided with grooves matched with the shapes of the outer surfaces of the reinforcing steel bars, and the grooves form the shapes of the sections of the reinforcing steel bars.
8. The intelligent steel bar bender for processing lower side door hinge according to claim 1, characterized in that: the location nail is the regular hexagon post, the location nail upper end is provided with the erection column, and the cross-section of erection column is greater than the cross-section of location nail.
9. The intelligent steel bar bender for processing lower side door hinge according to claim 1, characterized in that: the lower part of the control panel is also provided with a base plate, the side surface of the base plate is a right-angled triangle, and the control panel is arranged on the inclined side surface of the base plate.
10. The intelligent steel bar bender for processing lower side door hinge according to claim 1, characterized in that: the calculation formula of the steel bar bender for calculating the moving length of the transmission rack according to the central angle of the bending angle is as follows:
wherein, L is the length of the transmission rack, pi is the circumferential ratio of 3.14, r is the radius of the bending shaft, and n is the central angle of the required bending angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038229.0A CN113714421A (en) | 2021-09-06 | 2021-09-06 | Intelligent steel bar bending machine for machining lower side door hinge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038229.0A CN113714421A (en) | 2021-09-06 | 2021-09-06 | Intelligent steel bar bending machine for machining lower side door hinge |
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| CN113714421A true CN113714421A (en) | 2021-11-30 |
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| CN202111038229.0A Pending CN113714421A (en) | 2021-09-06 | 2021-09-06 | Intelligent steel bar bending machine for machining lower side door hinge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406131A (en) * | 2022-01-28 | 2022-04-29 | 上海蔚建科技有限公司 | Automatic replacement mechanism for mould of steel bar bending machine |
| CN115090787A (en) * | 2022-07-19 | 2022-09-23 | 安徽江淮汽车集团股份有限公司 | Double round forming die |
| CN115815465A (en) * | 2023-02-15 | 2023-03-21 | 南通固邦数控机床有限公司 | Auxiliary straightening device for reinforcing steel bar for machining |
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| CN108580740A (en) * | 2018-04-25 | 2018-09-28 | 许昌学院 | A kind of novel numerical control angle-bender |
| CN210702222U (en) * | 2019-07-04 | 2020-06-09 | 福州外语外贸学院 | Efficient reinforcing steel bar hoop bending equipment for building |
| CN211588344U (en) * | 2020-01-20 | 2020-09-29 | 青岛诚泰人防防护设备有限公司 | Reinforcing bar aligning bender |
| CN213033506U (en) * | 2020-08-26 | 2021-04-23 | 南京中和铁路配件有限公司 | Automatic discharging steel bar bending machine for processing lower side door hinge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1404422A (en) * | 2000-02-17 | 2003-03-19 | 三樱工业株式会社 | Bending machine |
| CN2678795Y (en) * | 2004-02-24 | 2005-02-16 | 天津市建科机械制造有限公司 | Continuous prodn. appts. for straightening, shearing and bending reinforced bar |
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| CN213033506U (en) * | 2020-08-26 | 2021-04-23 | 南京中和铁路配件有限公司 | Automatic discharging steel bar bending machine for processing lower side door hinge |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406131A (en) * | 2022-01-28 | 2022-04-29 | 上海蔚建科技有限公司 | Automatic replacement mechanism for mould of steel bar bending machine |
| CN115090787A (en) * | 2022-07-19 | 2022-09-23 | 安徽江淮汽车集团股份有限公司 | Double round forming die |
| CN115090787B (en) * | 2022-07-19 | 2023-07-14 | 安徽江淮汽车集团股份有限公司 | Double round forming die |
| CN115815465A (en) * | 2023-02-15 | 2023-03-21 | 南通固邦数控机床有限公司 | Auxiliary straightening device for reinforcing steel bar for machining |
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