CN110977350A - One-step forming machining method for machining outer circle of main arm mounting shaft - Google Patents
One-step forming machining method for machining outer circle of main arm mounting shaft Download PDFInfo
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- CN110977350A CN110977350A CN201911268816.1A CN201911268816A CN110977350A CN 110977350 A CN110977350 A CN 110977350A CN 201911268816 A CN201911268816 A CN 201911268816A CN 110977350 A CN110977350 A CN 110977350A
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- step forming
- mounting shaft
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- acidification
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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Abstract
The invention discloses a one-step forming processing method for processing an excircle of a main arm mounting shaft, which comprises the following steps: analyzing a part drawing, selecting raw materials according to material performance and use requirements required by the drawing, intercepting a bar with the diameter larger than 1cm of the drawing by adopting a cold shearing blanking method after the selection is finished, simply cleaning the surface of the bar after the bar is obtained, removing impurities and dust on the surface, then treating the surface by sand blasting to eliminate stress, and performing pretreatment before machining. According to the main arm mounting shaft outer circle machining one-step forming machining method, before polishing, the surface of the mounting shaft is soaked by alcohol, impurities on the surface are removed, then an oxidation film in the surface is removed through acidizing, the surface of the mounting shaft is softened, the softened surface of the mounting shaft is easier to cut and pin the outer circle, machining speed is increased, and outer circle machining precision is improved.
Description
Technical Field
The invention relates to the technical field of shaft machining, in particular to a one-step forming machining method for machining an outer circle of a main arm mounting shaft.
Background
The shaft is a cylindrical object which is penetrated in the middle of a bearing or a wheel or in the middle of a gear, but a small part of the shaft is square, the shaft is a mechanical part which supports a rotating part and rotates together with the shaft to transfer motion, torque or bending moment, the shaft is generally in the shape of a metal round rod, each section can have different diameters, the part which rotates in the machine is arranged on the shaft, the structural design of the shaft is an important step for determining the reasonable appearance and the whole structural dimension of the shaft, the shaft is designed according to the type, the dimension and the position of the part arranged on the shaft, the fixing mode of the part, the property, the direction, the size and the distribution condition of load, the type and size of the bearing, the shaft blank, the manufacturing and assembly process, the installation and transport, the designer can design the shaft according to the specific requirements of the shaft, and can compare several schemes if necessary so as to select the optimal design scheme.
When the excircle of the mounting shaft is machined, an excircle grinding machine is usually adopted, and the excircle grinding machine is used for machining the outer surface and the shaft shoulder end surface of a cylindrical, conical or other-shaped plain line of a workpiece; the cylindrical grinder is a machine tool which is most widely applied in all grinders, and generally comprises a cast iron lathe bed at a basic part, a workbench, a headstock, a tailstock, a grinding carriage for mounting a grinding wheel, a transverse feeding mechanism for controlling the size of a grinding workpiece, an electric appliance for controlling the motion of a moving part of the machine tool, a hydraulic device and other main parts. The cylindrical grinding machine can be generally divided into a common cylindrical grinding machine, a universal cylindrical grinding machine, a wide grinding wheel cylindrical grinding machine, an end face cylindrical grinding machine, a multi-grinding wheel frame cylindrical grinding machine, a multi-grinding wheel cylindrical grinding machine, a plunge type cylindrical grinding machine, a special cylindrical grinding machine and the like
The existing main arm mounting shaft is usually turned after rough turning is carried out on the surface by adopting a lathe when turning the excircle, the machining efficiency is lower when the materials with higher hardness are machined, machining errors are easy to generate, bar materials are scrapped, and the machining efficiency is lower.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a one-step forming processing method for processing the excircle of a main arm mounting shaft, which solves the problems that the processing efficiency is lower when some materials with higher hardness are processed, and bar materials are scrapped and the processing efficiency is lower due to the fact that processing errors are easy to generate during processing.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a one-step forming processing method for machining the excircle of a main arm mounting shaft comprises the following steps:
step one, blanking: analyzing a drawing of a part, selecting raw materials according to material performance and use requirements required by the drawing, intercepting a bar with the diameter larger than 1cm of the drawing by adopting a cold shearing blanking method after the selection is finished, simply cleaning the surface of the bar to remove impurities and dust on the surface, and then treating the surface by sand blasting to eliminate stress;
step two, pretreatment before processing: cleaning a bar in clear water through clear water, soaking the bar in 30-40% alcohol liquid for 10min, taking out the bar, draining, placing the bar in a sliding box, starting a driving motor to drive a threaded rod to rotate, driving a sliding piece to slide downwards through a threaded rod, driving an acidification box to move downwards through a supporting arm until the bar moves to 10CM below a sliding port, stopping the acidification box when the bar moves to 5CM below the sliding port, acidifying the bar through the acidification liquid for 20 min, starting the driving motor reversely after the acidification is finished, driving the acidification box to rise, sliding the sliding box out along the sliding port, cleaning the surface of the bar through the clear water, drying, and taking out for next operation;
step three, excircle processing: roughly turning the outer diameter of the bar subjected to primary treatment, reserving the allowance of 1mm, then carrying out heat treatment on the roughly turned shaft body for one hour at 65 ℃, then carrying out air cooling to room temperature along with a furnace, then carrying out finish turning on the shaft body, then carrying out heat treatment on the finely turned shaft body for two hours at 450 ℃, carrying out air cooling to room temperature along with the furnace, and finally carrying out polishing and chamfering treatment on the processed shaft body to finish processing.
Preferably, its processingequipment includes the acidizing pond, the inner chamber swing joint in acidizing pond has the acidizing box, support frame fixedly connected with driving motor is passed through on the left side in acidizing pond, shaft coupling fixedly connected with threaded rod is passed through on the top of driving motor output shaft.
Preferably, the left side sliding connection of acidizing pond has the slider, the fixed surface that the left side of acidizing pond just is located the slider top is connected with the kicking block, the top of threaded rod runs through the bottom of slider and extends to the top of slider.
Preferably, the surface of the threaded rod is in threaded connection with the inner cavity of the sliding part, and the top end of the threaded rod is in rotational connection with the inner cavity of the top block.
Preferably, a support arm is fixedly connected to a surface of the slider, and a surface of the support arm is fixedly connected to a surface of the acidification box.
Preferably, the inner cavity of the acidification box is connected with a sliding box in a sliding manner.
Preferably, the inner cavity of the acidification tank is provided with a sliding outlet matched with the surface of the sliding box, and the surfaces of the sliding box and the acidification box are both provided with acid liquor soaking ports.
Preferably, the acidizing fluid in the second step is a mixture of 3% hydrochloric acid, 10% nitric acid and 87% clear water.
(III) advantageous effects
The invention provides a one-step forming machining method for machining an outer circle of a main arm mounting shaft. Compared with the prior art, the method has the following beneficial effects:
(1) the main arm mounting shaft outer circle machining one-step forming machining method comprises the following steps of: cleaning a bar in clear water through clear water, then placing the bar in 30-40% alcohol liquid for soaking for 10min, taking out the bar for draining, then placing the bar in a sliding box, starting a driving motor to drive a threaded rod to rotate, driving a sliding piece to slide downwards through a threaded rod, driving an acidification box to move downwards through a supporting arm, stopping until the bar moves to 10CM below a sliding port, adding acidification liquid into an acidification tank at the moment, stopping until 5CM below the sliding port, acidifying the bar for 20 min through the acidification liquid, reversely starting the driving motor after acidification is completed, driving the acidification box to rise, sliding the sliding box out along the sliding port, cleaning the surface of the bar through clear water, drying, taking out the bar for preparation for next operation, wherein the acidification liquid in the step two is a mixture of 3% hydrochloric acid, 10% nitric acid and 87% clear water, and processing the outer circle: the external diameter to the bar through preliminary treatment carries out the rough turning, reserve the surplus 1mm, then with the axis body after the rough turning heat treatment under 65 ℃ for an hour, following this along with stove air cooling to room temperature, then carry out the finish turning to the axis body, then with the axis body after the finish turning heat treatment under 450 ℃ for two hours, following this along with stove air cooling to room temperature, the axis body that will process the completion at last polishes the chamfer and handles, accomplish processing, before polishing, soak the surface of installation axle through alcohol earlier, detach the impurity on surface, then detach the oxide film in the surface and make the surface of installation axle soften through acidizing, the surface of the installation axle after the softening is cut the round pin and is processed the excircle more easily, the process velocity is increased, the excircle machining precision is improved.
(2) The main arm mounting shaft outer circle machining one-step forming machining method comprises the steps that an acidification box is movably connected to an inner cavity of an acidification pool, a driving motor is fixedly connected to the left side of the acidification pool through a supporting frame, a threaded rod is fixedly connected to the top end of an output shaft of the driving motor through a coupler, a sliding piece is slidably connected to the left side of the acidification pool, a top block is fixedly connected to the surface of the left side of the acidification pool and located above the sliding piece, the top end of the threaded rod penetrates through the bottom of the sliding piece and extends to the upper portion of the sliding piece, the surface of the threaded rod is in threaded connection with the inner cavity of the sliding piece, the top end of the threaded rod is rotatably connected with the inner cavity of the top block, a supporting arm is fixedly connected to the surface of the sliding piece, the surface of the supporting arm is, acid liquor soaking openings are formed in the surfaces of the sliding box and the acidification box, the acidification pool and the acidification box are matched to quickly acidify the bar, the bar can be quickly and safely taken out to be operated on next step after the acidification is finished, and the processing is more convenient.
(3) The main arm mounting shaft outer circle machining one-step forming machining method comprises the following steps: the method comprises the steps of analyzing a drawing of a part, selecting raw materials according to the material performance and the use requirement required by the drawing, intercepting a bar with the diameter larger than that of the drawing by a cold shearing blanking method after the selection is finished, simply cleaning the surface of the bar after the bar is obtained, removing impurities and dust on the surface, treating the surface by sand blasting, eliminating stress, and improving the mechanical performance of the surface of the bar by sand blasting the surface before processing, thereby improving the fatigue resistance of a workpiece and facilitating the processing.
Drawings
FIG. 1 is a cross-sectional view of a structure of the present invention;
FIG. 2 is a top view of the acidification box structure of the present invention.
In the figure, 1-acidification tank, 2-acidification box, 3-driving motor, 4-threaded rod, 5-sliding piece, 6-top block, 7-supporting arm, 8-sliding box and 9-sliding outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: a one-step forming processing method for machining the excircle of a main arm mounting shaft comprises the following steps:
step one, blanking: analyzing a drawing of a part, selecting raw materials according to material performance and use requirements required by the drawing, intercepting a bar with the diameter larger than 1cm of the drawing by adopting a cold shearing blanking method after the selection is finished, simply cleaning the surface of the bar after the bar is obtained, removing impurities and dust on the surface, then treating the surface by sand blasting to eliminate stress, and before the processing, improving the mechanical performance of the surface of the bar by sand blasting the surface, improving the fatigue resistance of a workpiece and facilitating the processing;
step two, pretreatment before processing: cleaning a bar in clear water through clear water, soaking the bar in 30-40% alcohol liquid for 10min, taking out the bar, draining, wherein the alcohol is a good solvent and can dissolve a plurality of inorganic substances and organic substances, so that the plant pigment or medicinal components in the plant pigment are dissolved by ethanol, the ethanol is also used as a reaction solvent to dissolve the organic substances and the inorganic substances participating in the reaction, the contact area is increased, then the bar is placed in a sliding box 8, a driving motor 3 is started to drive a threaded rod 4 to rotate, the driving motor 3 is communicated with a power supply, the threaded rod 4 drives a sliding part 5 to slide downwards, the support arm 7 drives an acidification box 2 to move downwards until the bar moves to 10CM below a sliding port 9, at the moment, the acidification liquid is added into an acidification tank 1 until the bar stops after 5CM below the sliding port 9, and the bar is acidified by the acidification liquid for 20 min, after acidification is finished, the driving motor 3 is reversely started to drive the acidification box 2 to lift, the sliding box 8 slides out along the sliding outlet 9, the surface of the bar is cleaned by clear water, then dried and taken out to prepare for the next operation, acidification liquid in the step two is a mixture of 3 percent hydrochloric acid, 10 percent nitric acid and 87 percent clear water, the hydrochloric acid is mainly used for the pre-plating treatment of iron parts, firstly, caustic soda solution is used for washing to remove oil stains, then, hydrochloric acid is used for soaking, before metal welding, a little hydrochloric acid and the like are needed to be coated on a welding opening, the property that the hydrochloric acid can dissolve metal oxides is utilized to remove rust, the metal surface can be firmly plated, the aim of removing materials by a corrosion method can be achieved, before polishing, the surface of a mounting shaft is soaked by alcohol to remove impurities on the surface, then, the oxidation film in the surface is removed by acidification treatment, and the surface of the mounting shaft is softened, the softened surface of the mounting shaft is easier to cut and pin to process the excircle, so that the processing speed is increased, and the processing precision of the excircle is improved;
step three, excircle processing: roughly turning the outer diameter of the bar subjected to primary treatment, reserving the allowance of 1mm, then carrying out heat treatment on the roughly turned shaft body for one hour at 65 ℃, then carrying out air cooling to room temperature along with a furnace, then carrying out finish turning on the shaft body, then carrying out heat treatment on the finely turned shaft body for two hours at 450 ℃, carrying out air cooling to room temperature along with the furnace, and finally carrying out polishing and chamfering treatment on the processed shaft body to finish processing.
The invention also discloses a device for processing the outer circle of the main arm mounting shaft, which comprises an acidification tank 1, wherein the inner cavity of the acidification tank 1 is provided with a sliding-out port 9 matched with the surface of a sliding box 8, the surfaces of the sliding box 8 and the acidification box 2 are both provided with acid soaking ports, the left side of the acidification tank 1 is connected with a sliding piece 5 in a sliding manner, the surface of the sliding piece 5 is fixedly connected with a supporting arm 7, the surface of the supporting arm 7 is fixedly connected with the surface of the acidification box 2, the inner cavity of the acidification box 2 is connected with the sliding box 8 in a sliding manner, the surface of the left side of the acidification tank 1, which is positioned above the sliding piece 5, is fixedly connected with a top block 6, the top end of a threaded rod 4 penetrates through the bottom of the sliding piece 5 and extends to the upper part of the sliding piece 5, the surface of the threaded rod 4 is in threaded connection, support frame fixedly connected with driving motor 3 is passed through in the left side of acidizing pond 1, and shaft coupling fixedly connected with threaded rod 4 is passed through on the top of the 3 output shafts of driving motor, can be quick carry out the acidizing operation to the bar through the cooperation of acidizing pond 1 and acidizing box 2 to can be quick safe after the acidizing is accomplished take out the bar and operate on next step, it is more convenient to process.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A one-step forming machining method for machining the excircle of a main arm mounting shaft is characterized by comprising the following steps of: the method comprises the following steps:
step one, blanking: analyzing a drawing of a part, selecting raw materials according to material performance and use requirements required by the drawing, intercepting a bar with the diameter larger than 1cm of the drawing by adopting a cold shearing blanking method after the selection is finished, simply cleaning the surface of the bar to remove impurities and dust on the surface, and then treating the surface by sand blasting to eliminate stress;
step two, pretreatment before processing: cleaning the bar stock in clear water by clear water, soaking in 30-40% alcohol liquid for 10min, taking out, draining, then the bar stock is placed in a sliding box (8), a driving motor (3) is started to drive a threaded rod (4) to rotate, the threaded rod (4) drives a sliding part (5) to slide downwards, the support arm (7) drives the acidification box (2) to move downwards until the acidification box moves to 10CM below the sliding port (9), at the moment, acidification liquid is added into the acidification tank (1) until the acidification tank stops after 5CM below the sliding port (9), acidifying the bar stock for 20 minutes by using an acidifying solution, starting the driving motor (3) reversely after the acidification is finished, driving the acidifying box (2) to lift, sliding the sliding box (8) out along the sliding outlet (9), cleaning the surface of the bar stock by using clear water, drying, and taking out to prepare for the next operation;
step three, excircle processing: roughly turning the outer diameter of the bar subjected to primary treatment, reserving the allowance of 1mm, then carrying out heat treatment on the roughly turned shaft body for one hour at 65 ℃, then carrying out air cooling to room temperature along with a furnace, then carrying out finish turning on the shaft body, then carrying out heat treatment on the finely turned shaft body for two hours at 450 ℃, carrying out air cooling to room temperature along with the furnace, and finally carrying out polishing and chamfering treatment on the processed shaft body to finish processing.
2. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 1, wherein the one-step forming machining method comprises the following steps of: its processingequipment includes acidizing pond (1), the inner chamber swing joint in acidizing pond (1) has acidizing box (2), support frame fixedly connected with driving motor (3) are passed through in the left side in acidizing pond (1), shaft coupling fixedly connected with threaded rod (4) are passed through on the top of driving motor (3) output shaft.
3. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 2, wherein the one-step forming machining method comprises the following steps: the left side sliding connection of acidizing pond (1) has slider (5), the left side of acidizing pond (1) and the fixed surface that is located slider (5) top are connected with kicking block (6), the top of threaded rod (4) runs through the bottom of slider (5) and extends to the top of slider (5).
4. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 3, wherein the one-step forming machining method comprises the following steps of: the surface of the threaded rod (4) is in threaded connection with the inner cavity of the sliding part (5), and the top end of the threaded rod (4) is rotatably connected with the inner cavity of the ejector block (6).
5. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 3, wherein the one-step forming machining method comprises the following steps of: the surface of the sliding piece (5) is fixedly connected with a supporting arm (7), and the surface of the supporting arm (7) is fixedly connected with the surface of the acidification box (2).
6. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 2, wherein the one-step forming machining method comprises the following steps: the inner cavity of the acidification box (2) is connected with a sliding box (8) in a sliding way.
7. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 2, wherein the one-step forming machining method comprises the following steps: the inner cavity of the acidification tank (1) is provided with a sliding-out opening (9) matched with the surface of the sliding box (8), and acid liquor soaking openings are formed in the surfaces of the sliding box (8) and the acidification box (2).
8. The one-step forming machining method for machining the outer circle of the main arm mounting shaft according to claim 1, wherein the one-step forming machining method comprises the following steps of: and the acidizing fluid in the second step is a mixture of 3% hydrochloric acid, 10% nitric acid and 87% clear water.
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| CN201911268816.1A CN110977350B (en) | 2019-12-11 | 2019-12-11 | One-step forming machining method for machining outer circle of main arm mounting shaft |
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| CN201911268816.1A CN110977350B (en) | 2019-12-11 | 2019-12-11 | One-step forming machining method for machining outer circle of main arm mounting shaft |
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| CN110977350B CN110977350B (en) | 2020-12-11 |
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| US5413256A (en) * | 1991-04-30 | 1995-05-09 | The Young Industries, Inc. | Valve rotor |
| CN102310310A (en) * | 2010-07-08 | 2012-01-11 | 襄阳汽车轴承股份有限公司 | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings |
| CN103264057A (en) * | 2013-05-27 | 2013-08-28 | 石嘴山市宏天工贸实业有限公司 | Cold-drawing shaft production technology by utilizing ultrasonic vibration |
| CN106002122A (en) * | 2016-06-30 | 2016-10-12 | 娄土岭 | Manufacturing process of automobile transmission shaft |
| EP2998049B1 (en) * | 2014-09-22 | 2019-04-17 | Honeywell International Inc. | Methods for producing gas turbine engine rotors having shaped internal cavities from metallic powders |
| KR20190058906A (en) * | 2017-11-22 | 2019-05-30 | 원강산업(주) | Manufacturing method of ball cage for constant velocity joint |
-
2019
- 2019-12-11 CN CN201911268816.1A patent/CN110977350B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413256A (en) * | 1991-04-30 | 1995-05-09 | The Young Industries, Inc. | Valve rotor |
| CN102310310A (en) * | 2010-07-08 | 2012-01-11 | 襄阳汽车轴承股份有限公司 | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings |
| CN103264057A (en) * | 2013-05-27 | 2013-08-28 | 石嘴山市宏天工贸实业有限公司 | Cold-drawing shaft production technology by utilizing ultrasonic vibration |
| EP2998049B1 (en) * | 2014-09-22 | 2019-04-17 | Honeywell International Inc. | Methods for producing gas turbine engine rotors having shaped internal cavities from metallic powders |
| CN106002122A (en) * | 2016-06-30 | 2016-10-12 | 娄土岭 | Manufacturing process of automobile transmission shaft |
| KR20190058906A (en) * | 2017-11-22 | 2019-05-30 | 원강산업(주) | Manufacturing method of ball cage for constant velocity joint |
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