CN115430724A - Cold drawing process for linear guide rail - Google Patents
Cold drawing process for linear guide rail Download PDFInfo
- Publication number
- CN115430724A CN115430724A CN202211006830.6A CN202211006830A CN115430724A CN 115430724 A CN115430724 A CN 115430724A CN 202211006830 A CN202211006830 A CN 202211006830A CN 115430724 A CN115430724 A CN 115430724A
- Authority
- CN
- China
- Prior art keywords
- guide rail
- die
- cold
- chuck
- furnace
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/20—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of essentially unlimited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/27—Carriages; Drives
- B21C1/28—Carriages; Connections of grippers thereto; Grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C19/00—Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a cold drawing process of a linear guide rail, which comprises the steps of selecting a blank; heading, and manufacturing a process chuck; and heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of the finished product of the guide rail, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force. The special drawing equipment and the special die are used in the drawing process, so that the product has accurate size and bright and clean surface; the tool and the equipment are simple, and the maintenance is convenient; the long products with small specifications can be continuously produced at high speed; in the drawing process, the equipment can keep higher strength and stability, the abrasion resistance and the durability of the die are good, the abrasion of a drawing tool and a drawing die can be effectively reduced, smaller flowing shear stress exists, the metal surface quality is improved, the production process is simple, the drawing yield is high, the drawing die is long in service life, and the obtained special-shaped section profile is stable in size and high in surface quality.
Description
Technical Field
The invention relates to the field of guide rail processing technology, in particular to a cold drawing process of a linear guide rail.
Background
Drawing is one of the main production methods of pipes, rods, profiles and wires. According to the sectional shape of the product, drawing can be divided into: solid material drawing and hollow material drawing. The drawing linear guide rail is a plastic processing method for applying a pulling force to a solid bar blank to enable the solid bar blank to pass through a die hole so as to obtain a product with the same size and shape as the cross section of the die hole. In order to reduce the occurrence of serious abrasion or sintering in the drawing process, the lubricant is required to play roles of antifriction, abrasion prevention, cooling and lubrication; meanwhile, the drawing speed and the section reduction rate can be improved, so that the yield and the quality of the drawing process are improved, and the defects of surface scratch, wrinkle, bending, eccentricity, crack, broken head, metal pressing and the like are prevented.
However, the production process is difficult in the drawing process in the prior art, the drawing yield is low, the service life of a drawing die is short, the obtained special-shaped linear guide rail has a rough surface, the dimensional tolerance of the section body is unstable, a large amount of materials are wasted, and the like.
Therefore, it is necessary to provide a cold drawing process for linear guide rails to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a cold drawing process of a linear guide rail, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a cold drawing process of a linear guide rail comprises the following steps:
s1: selecting a blank;
s2: heading, manufacturing a process chuck; heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of a finished product of the guide rail, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force;
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and then discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely putting the solid square blank into a material pushing device, pushing the solid square blank forwards to enable the front end of the process head to smoothly pass through a die hole of a cold drawing die and extend out of the die hole by 30cm, and then clamping the process head by using a drawing chuck for drawing forming;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; correcting the torsion resistance and the straightness of the guide rail, wherein the guide rail meets the requirement of the straightness;
s13: heat treatment, namely preheating the furnace temperature to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace temperature to 850 +/-10 ℃, preserving the temperature in the furnace for 1.5-2h, then quickly taking out the furnace oil, cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires drilling a counter bore on the guide rail to facilitate fixing to the workbench;
s15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; and grinding the guide rail surface by using a surface grinding machine and a forming grinding machine, and grinding the surface and the groove.
S17: and (6) checking.
Preferably, in the step S1, a bar stock with a diameter of 44mm is selected as a blank for cold drawing, and it is ensured that the centroid of the cross-sectional shape coincides with the center of the circle.
Preferably, in the step S5, the blank is subjected to surface treatment using a shot blasting machine to remove scale on the surface of the workpiece, thereby making the surface of the workpiece smooth and bright.
Preferably, the material surface is cleaned by acid washing in step S6 with total acidity of 25%, the material surface is cleaned by phosphating clean water in step S7, and the guide rail surface is saponified in step S8 with 6% saponification solution to lubricate.
Preferably, the mold for cold-drawing the guide rail in the step S9 has three-pass cold-drawing molds.
Preferably, the sectional shape of the part processed by the cold drawing in the step S9 is selected from a general conical die as the form of the cold drawing die of this time.
Compared with the prior art, the invention has the beneficial effects that:
1. the special drawing equipment and the special die are used in the drawing process, so that the product has accurate size and bright and clean surface; the tools and equipment are simple, and the maintenance is convenient; the long products with small specifications can be continuously produced at high speed; in the drawing process, the equipment can keep higher strength and stability, the abrasion resistance and the durability of the die are good, the abrasion of a drawing tool and the drawing die can be effectively reduced, smaller flowing shear stress is generated, the metal surface quality is improved, the production process is simple, the drawing yield is high, the service life of the drawing die is long, and the obtained special-shaped section profile is stable in size and high in surface quality;
2. the invention makes the cold extrusion deformation of the raw material to the required shape, specification and tolerance, the consumption of the raw material is very little, compared with the material consumed by machining and cutting by using the traditional lathe, the material saved by cold drawing steel is very considerable, especially when the material consumption is large, the saving of the material cost is more obvious, and because the precision is accurate, the surface condition is good, the cold drawing steel product can be directly used, such as spraying, sanding, bending and drilling, and can also be directly electroplated after being finely drawn according to the actual requirement, thereby saving a large amount of machining time and saving the cost for configuring the machining machinery.
Drawings
FIG. 1 is a schematic drawing of the cold drawing of the present invention;
FIG. 2 is a first pass die diagram of the present invention;
FIG. 3 is a second pass die diagram of the present invention;
FIG. 4 is a third pass die diagram of the present invention;
fig. 5 is a schematic view of the processing of the guide rail of the present invention.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.
Referring to fig. 1-5, a linear guide rail cold drawing process includes the following steps:
s1: selecting a blank; the main principle to be followed by the selection rule of the deformed steel cold-drawn blank is as follows: the shape of the finished product guide rail is included in the shape of the blank and is properly larger than the circumscribed circle of the section of the finished product, so that the main purpose of the process is to reserve allowance for subsequent cold drawing processing, the cold drawing can be smoothly carried out, in addition, allowance can be reserved for surface processing such as acid washing, phosphorus washing and the like, after treatment, pits with different sizes can be generated on the surface of the blank, and the influence of the surface pits on the subsequent processing can be eliminated by selecting a larger point of the blank;
s2: heading, and manufacturing a process chuck; heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of a finished product of the guide rail, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force;
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely putting the solid square blank into a material pushing device, pushing the solid square blank forwards to enable the front end of the process head to smoothly pass through a die hole of a cold drawing die and extend out of the die hole by 30cm, and then clamping the process head by using a drawing chuck for drawing forming;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; correcting the torsion resistance and the straightness of the guide rail to meet the requirement of the straightness of the guide rail;
s13: heat treatment, namely preheating the furnace temperature to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace temperature to 850 +/-10 ℃, preserving the temperature in the furnace for 1.5-2h, then quickly taking out the furnace oil, cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires drilling a counter bore on the guide rail to facilitate fixing to the workbench;
s15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; and grinding the guide rail surface by using a surface grinding machine and a forming grinding machine, and grinding the surface and the groove.
S17: and (6) checking.
In the step S1, a bar stock with the diameter of 44mm is selected as a blank for cold drawing processing, and the centroid of the cross section shape is ensured to coincide with the circle center.
And in the step S5, a shot blasting machine is used for carrying out surface treatment on the square billet, and oxide skin on the surface of the workpiece is removed, so that the surface of the workpiece is smooth and bright.
In step S6, the total acidity with the total acidity of 25% is used for acid washing to clean the surface of the material, in step S7, clear water is used for phosphating to clean the acidity of the surface of the material, and in step S8, 6% saponification liquid is used for saponification of the surface of the guide rail, so that the guide rail has a lubricating effect.
As shown in fig. 2 to 4, the mold for cold drawing the guide rail in step S9 has three passes of cold drawing.
As shown in fig. 5, the sectional shape of the part processed in the cold drawing in step S9 is selected from a common conical die as a form of the cold drawing die at this time, and the part is composed of four parts, wherein the first part is a cylindrical part and is used for cooperating with the chuck to drive the part to move. The second part is a machined part, and the cross-sectional profile of the part is the final cross-sectional shape of the guide rail. The third part is the machined part, which coincides with the compression band of the die, where the main plastic deformation occurs. The fourth part is a part to be processed.
In the cold drawing of the deformed steel, due to the limitation of the cold drawing equipment and the material of the processed parts, the parts with the required final cross-sectional shapes are often processed by multiple times. And when the cold drawing passes are determined, the cold drawing passes are reasonably designed according to the quality of the cold plastic processing performance of the material. The material with good cold plasticity processing performance can obtain a finished product meeting the requirement through less cold drawing passes, and conversely, the material with poor cold plasticity needs more passes
Example one
A cold drawing process of a linear guide rail comprises the following steps:
s1: selecting a blank; the main principle to be followed by the selection of the deformed steel cold-drawn blank is as follows: the shape of the finished product guide rail is included in the shape of the blank and is properly larger than the circumscribed circle of the section of the finished product, so that the main purpose of the process is to reserve allowance for subsequent cold drawing processing, the cold drawing can be smoothly carried out, in addition, allowance can be reserved for surface processing such as acid washing, phosphorus washing and the like, after treatment, pits with different sizes can be generated on the surface of the blank, and the influence of the surface pits on the subsequent processing can be eliminated by selecting a larger point of the blank;
s2: heading, manufacturing a process chuck; heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of a finished product of the guide rail, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force;
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely using a gate die, putting the solid square blank into a material pushing device, pushing forwards to enable the front end of the process head to sequentially pass through a die hole of the gate die and extend out by 30cm, and then clamping the process head by using a drawing chuck to perform drawing forming;
s10: sawing, cutting to length and size after the finished product is finished, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; the correction of the torsion resistance and the straightness of the guide rail is the requirement that the guide rail reaches the straightness.
S13: heat treatment, namely preheating the furnace temperature to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace temperature to 850 +/-10 ℃, preserving the temperature in the furnace for 1.5-2h, then quickly taking out the furnace oil, cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires the drilling of counter bored holes in the guide rails to facilitate attachment to the table.
S15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; grinding the guide rail table by using a surface grinding machine and a forming grinding machine, and grinding the plane and the groove;
s17: and (6) checking.
The cold drawing process of the embodiment is suitable for materials with better cold plastic processing performance, the size of the product is accurate, and the surface is smooth and bright; the tools and equipment are simple, and the maintenance is convenient; the long products with small specifications can be continuously produced at high speed; in the drawing process, the equipment can keep higher strength and stability, the abrasion resistance and the durability of the die are good, the abrasion of a drawing tool and a drawing die can be effectively reduced, smaller flowing shear stress exists, the metal surface quality is improved, the production process is simple, the drawing yield is high, the drawing die is long in service life, and the obtained special-shaped section profile is stable in size and high in surface quality.
Example two
A cold drawing process of a linear guide rail comprises the following steps:
s1: selecting a blank; the main principle to be followed by the selection rule of the deformed steel cold-drawn blank is as follows: the shape of the finished product guide rail is included in the shape of the blank and is properly larger than the circumscribed circle of the section of the finished product, so that the main purpose of the process is to reserve allowance for subsequent cold drawing processing, the cold drawing can be smoothly carried out, in addition, allowance can be reserved for surface processing such as acid washing, phosphorus washing and the like, after treatment, pits with different sizes can be generated on the surface of the blank, and the influence of the surface pits on the subsequent processing can be eliminated by selecting a larger point of the blank;
s2: heading, manufacturing a process chuck; heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of the finished product of the guide rail, wherein the process chuck is required to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force,
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and then discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely using two kinds of pass dies, putting the solid square blank into a material pushing device, pushing the solid square blank forwards to enable the front end of the process head to sequentially pass through the die holes of the first kind of pass die and the second kind of pass die and extend out by 30cm, and then clamping the process head by using a drawing chuck to perform drawing forming;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; the correction of the torsion resistance and the straightness of the guide rail is the requirement that the guide rail reaches the straightness.
S13: heat treatment, namely preheating the furnace temperature to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace temperature to 850 +/-10 ℃, preserving the temperature in the furnace for 1.5-2h, then quickly taking out the furnace oil, cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires drilling a counter bore on the guide rail to facilitate fixing to the workbench;
s15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; grinding the guide rail table by using a surface grinding machine and a forming grinding machine, and grinding the surface and the groove;
s17: and (6) checking.
The cold drawing process of the embodiment is suitable for materials with medium cold molding processability, the product has accurate size and bright and clean surface; the tools and equipment are simple, and the maintenance is convenient; the long products with small specifications can be continuously produced at high speed; in the drawing process, the equipment can keep higher strength and stability, the abrasion resistance and the durability of the die are good, the abrasion of a drawing tool and the drawing die can be effectively reduced, smaller flowing shear stress is generated, the metal surface quality is improved, the production process is simple, the drawing yield is high, the service life of the drawing die is long, and the obtained special-shaped section profile is stable in size and high in surface quality.
EXAMPLE III
A cold drawing process of a linear guide rail comprises the following steps:
s1: selecting a blank; the main principle to be followed by the selection rule of the deformed steel cold-drawn blank is as follows: the shape of the finished product guide rail is included in the shape of the blank and is properly larger than the circumscribed circle of the section of the finished product, so that the main purpose of the process is to reserve allowance for subsequent cold drawing processing, the cold drawing can be smoothly carried out, in addition, allowance can be reserved for surface processing such as acid washing, phosphorus washing and the like, after treatment, pits with different sizes can be generated on the surface of the blank, and the influence of the surface pits on the subsequent processing can be eliminated by selecting a larger point of the blank;
s2: heading, and manufacturing a process chuck; heating one end of the raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of a finished product of the guide rail, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force;
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely using three kinds of pass dies, putting the solid square blank into a material pushing device, pushing the solid square blank forwards to enable the front end of a process head to sequentially pass through the die holes of the first pass die, the second pass die and the third pass die and extend out by 30cm, and then clamping the process head by using a drawing chuck to perform drawing forming;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; correcting the torsion resistance and the straightness of the guide rail, wherein the guide rail meets the requirement of the straightness;
s13: performing heat treatment, namely preheating the furnace to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace to 850 +/-10 ℃, preserving heat in the furnace for 1.5-2h, then quickly taking out the furnace and cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires drilling a counter bore on the guide rail to facilitate fixing to the workbench;
s15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; and grinding the guide rail surface by using a surface grinding machine and a forming grinding machine, and grinding the surface and the groove.
S17: and (6) checking.
The cold drawing process of the embodiment is suitable for materials with poor cold plastic processing performance, the product has accurate size, and the surface is smooth and bright; the tool and the equipment are simple, and the maintenance is convenient; the long products with small specifications can be continuously produced at high speed; in the drawing process, the equipment can keep higher strength and stability, the abrasion resistance and the durability of the die are good, the abrasion of a drawing tool and the drawing die can be effectively reduced, smaller flowing shear stress is generated, the metal surface quality is improved, the production process is simple, the drawing yield is high, the service life of the drawing die is long, the obtained special-shaped section profile is stable in size and high in surface quality
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A cold drawing process of a linear guide rail is characterized by comprising the following steps:
s1: selecting a blank;
s2: heading, manufacturing a process chuck; heating one end of a raw material by using an intermediate frequency furnace, manufacturing a process chuck according to the size of the cross section of a finished guide rail product, wherein the process chuck needs to be smaller than the minimum cross section of the guide rail, so that the chuck can smoothly pass through a die hole, clamp the process chuck and perform drawing to generate drawing force;
s3: the cold roll is used for extruding and drawing the raw material through a roll die, performing pretreatment before forming and drawing the raw material into a square billet;
s4: performing heat treatment, namely heating to 650 ℃ by using a continuous annealing furnace, preserving heat, entering a heat preservation area for preserving heat for 8H, entering air cooling and water cooling, and discharging to realize the effect of removing stress in the workpiece;
s5: shot blasting;
s6: acid washing;
s7: phosphorization;
s8: saponification;
s9: cold drawing, namely putting the solid square blank into a material pushing device, pushing the solid square blank forwards to enable the front end of the process head to smoothly pass through a die hole of a cold drawing die and extend out of the die hole by 30cm, and then clamping the process head by using a drawing chuck for drawing forming;
s10: sawing, cutting to length and size after finishing the finished product, and removing a process head;
s11: shot blasting, namely performing surface treatment on the square billet by using a shot blasting machine;
s12: straightening; correcting the torsion resistance and the straightness of the guide rail to meet the requirement of the straightness of the guide rail;
s13: heat treatment, namely preheating the furnace temperature to 350 ℃, then loading the furnace, introducing protective gas, heating the furnace temperature to 850 +/-10 ℃, preserving the temperature in the furnace for 1.5-2h, then quickly taking out the furnace oil, cooling the furnace oil to about 200 ℃, and taking the furnace oil out of an oil tank;
s14: drilling; the foundation process requires drilling a counter bore on the guide rail to facilitate fixing to the workbench;
s15: straightening; straightening the straightness of the guide rail to ensure that the guide rail reaches the required straightness;
s16: grinding; and grinding the guide rail surface by using a surface grinding machine and a forming grinding machine, and grinding the surface and the groove.
S17: and (6) checking.
2. The cold drawing process of the linear guide rail according to claim 1, characterized in that: in the step S1, a bar stock with the diameter of 44mm is selected as a blank for cold drawing processing, and the centroid of the cross-sectional shape is ensured to coincide with the center of a circle.
3. The cold drawing process of the linear guide rail according to claim 1, characterized in that: and in the step S5, a shot blasting machine is used for carrying out surface treatment on the square billet, and oxide skin on the surface of the workpiece is removed, so that the surface of the workpiece is smooth and bright.
4. The cold drawing process of the linear guide rail according to claim 1, characterized in that: in the step S6, the material surface is cleaned by using total acidity with total acidity of 25%, in the step S7, the material surface is cleaned by using clear water for phosphorization, and in the step S8, the guide rail surface is saponified by using 6% saponification liquid for lubrication.
5. The cold drawing process of the linear guide rail according to claim 1, characterized in that: the mold for cold-drawing the guide rail in the step S9 has three cold-drawing passes.
6. The cold drawing process of the linear guide rail according to claim 5, characterized in that: the cross-sectional shape of the part processed in the cold drawing in the step S9 is selected from a common conical die as a form of the cold drawing die of this time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006830.6A CN115430724A (en) | 2022-08-22 | 2022-08-22 | Cold drawing process for linear guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006830.6A CN115430724A (en) | 2022-08-22 | 2022-08-22 | Cold drawing process for linear guide rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115430724A true CN115430724A (en) | 2022-12-06 |
Family
ID=84244541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211006830.6A Pending CN115430724A (en) | 2022-08-22 | 2022-08-22 | Cold drawing process for linear guide rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115430724A (en) |
-
2022
- 2022-08-22 CN CN202211006830.6A patent/CN115430724A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103934638B (en) | A kind of accurate external splines pipe manufacturing process | |
| CN102873512A (en) | Manufacture method of large-caliber medium-and-thick-wall seamless steel tube for nuclear power plant | |
| US4249408A (en) | Process for extruding maraging steel | |
| CN113600637B (en) | Seamless steel pipe and preparation method thereof | |
| CN106623467B (en) | A kind of processing technology of the cold extrusion press for processing spraying arbor and spraying arbor | |
| CN102189141A (en) | Method for performing extrusion molding on internal hexagon bolt of alloy steel track end coupling device | |
| CN102500732B (en) | Multi-station cold heading forming technology of automobile door limiter | |
| CN110026751A (en) | A kind of manufacturing method of bevel planet gear oil groove | |
| Rauschnabel et al. | Modern applications of radial forging and swaging in the automotive industry | |
| CN112756463B (en) | Method for determining radius of rotary wheel fillet when three-rotary wheel spinning cylindrical part | |
| CN112170523A (en) | Hot extrusion molding method of copper alloy rail | |
| CN1026868C (en) | A method of precisely forming thin-wall tube-shaped element | |
| CN115430724A (en) | Cold drawing process for linear guide rail | |
| CN114522997A (en) | Integrated forming production method of stainless steel H-shaped steel | |
| CN1359766A (en) | One-step cold squeeze technology for machining multi-stepped shaft | |
| CN108273953A (en) | Automobile DCT speed changers input outer shaft deep hole cold forging base forming technology | |
| CN113458176A (en) | Manufacturing method of high-precision outer hexagonal and inner circular seamless tube with special-shaped cross section for nuclear power | |
| CN104493426A (en) | Production method of internal hexagonal bolt of track end coupler | |
| CN111822955B (en) | Machining process of flange integrated linear bearing | |
| CN206474519U (en) | A kind of cold extrusion press for processing spraying arbor | |
| CN213613379U (en) | Copper alloy track's hot extrusion's worker mould | |
| CN111347004A (en) | Cold extrusion pressing forming process for automobile universal joint fork integral piece | |
| CN111283011A (en) | Production method of seamless steel tube of automobile steering column | |
| RU2503523C2 (en) | Method of producing precision tubes and device to this end | |
| CN114102160B (en) | High-performance high-efficiency preparation method of tantalum alloy hyperboloid space structural member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |