CN109623288B - Nut machining process - Google Patents
Nut machining process Download PDFInfo
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- CN109623288B CN109623288B CN201910076576.9A CN201910076576A CN109623288B CN 109623288 B CN109623288 B CN 109623288B CN 201910076576 A CN201910076576 A CN 201910076576A CN 109623288 B CN109623288 B CN 109623288B
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- 238000003754 machining Methods 0.000 title claims abstract description 15
- 238000010079 rubber tapping Methods 0.000 claims abstract description 50
- 238000012545 processing Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 35
- 238000011282 treatment Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 15
- 210000000078 claw Anatomy 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses a nut processing technology, which relates to the technical field of nut processing and comprises the following steps: pretreatment, forming processing, deoiling treatment, tapping, cleaning treatment and surface treatment; the nut body collected by the discharging device is placed in the receiving hopper, a discharge port of the receiving hopper is connected with a conveying flow channel for conveying the nut body, conveying plates are arranged below the conveying flow channel at intervals, a tapping device for tapping the nut body between the conveying flow channel and the conveying plates is arranged on one side of each conveying plate, a material pushing device for pushing the tapped nut body out to the other side of each conveying plate is arranged at one end of each conveying plate, and a collecting device for receiving the tapped nut body is arranged on one side, away from the material pushing device, of each conveying plate; the nut machining device has the advantages of being stable in machining, improving the quality of nut machining products and being high in efficiency.
Description
Technical Field
The invention relates to the technical field of nut processing, in particular to a nut processing technology.
Background
The nut is a part which is screwed together with a bolt or a screw rod to play a role of fastening, is used for being in threaded connection with the bolt or the screw rod, and is commonly used on various precision parts, cabinets and automobile components; the method is divided into the following steps according to different materials: carbon steel, stainless steel, nonferrous metals, and the like.
The existing nut processing technology is as follows: 1. shaping a nut body, namely upsetting a blank by using a cold header, wherein continuous cold upsetting is generally required for 2-3 times, and the purpose is mainly to ensure that 4 opposite angles of the nut body are full and consistent; 2. drawing an angle, and upsetting a welding point with the same height at the edge of one end face of the formed nut body by using a cold header; 3. punching, namely punching a through hole in the center of the nut body by using a cold header; 4. and processing an internal thread in the central hole of the nut body by using a tapping machine for tapping.
When the existing tapping is carried out on the nut through hole, the nut blank is not fixed and is easy to shake, the processed thread teeth are separated or are randomly buckled, and therefore the waste materials generated in the processing process are not timely recovered and fall off at will, and the efficiency is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the nut processing technology which has the advantages of stable processing, improvement of the quality of nut processing products and high efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
a nut machining process comprises the following steps of S1: spheroidizing annealing treatment is carried out on the blank, the blank is heated to 700-750 ℃, heat preservation is carried out for 3-4 hours, then cooling treatment is carried out, the temperature is controlled to be 650-700 ℃, the blank is kept for 4-6 hours, and the blank is taken out of a furnace and cooled to the normal temperature in an air cooling mode; s2, molding: placing the blank pretreated in the step S1 into a cold header for processing and forming to obtain a nut body with full and consistent corners and a through hole punched in the center; s3, deoiling treatment: an oil removing pool is arranged at an outlet of the cold header, a conveying device which is obliquely and upwards conveyed is arranged in the oil removing pool, and a discharging device which is used for discharging the nut body from the conveying device is arranged at the tail end of the conveying device; s4, tapping: placing the nut bodies collected by the discharging device in the S3 in a receiving hopper, wherein a discharge port of the receiving hopper is connected with a conveying flow channel for conveying the nut bodies, conveying plates are arranged below the conveying flow channel at intervals, a tapping device for tapping the nut bodies between the conveying flow channel and the conveying plates is arranged on one side of each conveying plate, a material pushing device for pushing the tapped nut bodies out to the other side of each conveying plate is arranged at one end of each conveying plate, and a collecting device for receiving the tapped nut bodies is arranged on one side, away from the material pushing device, of each conveying plate; s5, cleaning: putting the nut body in the collecting device into a centrifugal device for cleaning; s6, surface treatment: and (4) completely immersing the nut body obtained by cleaning in the step S5 in an aqueous solution containing a precipitated metal compound, and passing an electric current through the aqueous solution to precipitate metal substances in the solution and attach the metal substances to the immersed part of the nut body to form an antirust layer.
According to the arrangement, firstly, the blank is pretreated and cooled at high temperature, so that the toughness of the blank is improved, and the quality of a processed product is improved; then, automatically forming a regular polygon nut body with a reserved through hole in the middle by a cold header; after the bolt body is cooled, the bolt body is conveyed into a deoiling tank for deoiling treatment, so that oil stains on the surface of the bolt body are removed, and the bolt body after deoiling treatment in the deoiling tank is conveyed into a discharging device through a conveying device; secondly, conveying the bolt body in the discharging device into a receiving hopper, conveying the bolt body onto a conveying plate through a conveying flow channel, carrying out a tapping process on the bolt body through a tapping device, pushing the tapped nut body out of the conveying plate through a material pushing device, and dropping the tapped nut body into a collecting device; thirdly, the tapped bolt body in the collecting device is placed into a centrifugal device for cleaning, so that impurities on the bolt body are removed centrifugally, and the cleanliness of the bolt body is improved; finally, performing surface treatment on the cleaned bolt body to form an anti-rust layer on the surface of the nut body, so that the product quality of the bolt parent body is improved; further checking the bolt body through overall dimension checking; through the steps, the nut machining method has the effects of stable machining, improvement of the quality of nut machining products and high efficiency.
Further setting: conveyor includes the frame, rotates two transfer rollers that set up in the frame and the conveyer belt that two transfer rollers were located to the cover, and one of them the transfer roller arrange in the deoiling pond, the conveyer belt is the soft area of magnetism, discharge apparatus sets up in another in the frame of transfer roller direction.
So set up, carry out the purpose that conveys to the conveyer belt through two transfer rollers in the frame, because the conveyer belt is the soft area of magnetism, and one end is in the deoiling pond, adsorb the bolt body after the deoiling to convey on the conveyer belt through magnetic force, unload the bolt body on the conveyer belt through the discharge apparatus on the other end of frame at last to drop and carry out the tapping process in receiving the hopper.
Further setting: the discharging device comprises a discharging plate fixedly arranged on the rack, the discharging plate is arranged below the conveying belt and is inclined with the conveying surface of the conveying belt, and the receiving hopper is arranged under the discharging plate.
So set up, adsorb the bolt body at the conveyer belt and carry out the way that conveys, on the way of passback, block the bolt body on the conveyer belt through the stripper and convey to in dropping to the receiving hopper through the action of gravity of bolt body, reach automatic discharge's purpose.
Further setting: and an oil separation plate is fixedly arranged in the deoiling tank.
So set up, through the oil removal board, the region that makes upper impurity and conveyer belt conveying in its deoiling pond keeps apart, reduces some floaters and carries out pivoted purpose along with the conveyer belt.
Further setting: the tapping device comprises a mounting frame, a tapping driving cylinder, a rotating motor and a tapping die head, wherein the tapping driving cylinder is fixedly arranged on the mounting frame and reciprocates towards the direction of the conveying flow channel, the rotating motor is fixedly connected with a piston rod of the tapping driving cylinder, and the tapping die head is fixedly arranged on a driving shaft of the rotating motor.
So set up, drive actuating cylinder drive through attacking tooth and rotate the motor and be in the mounting bracket and slide and move towards the transport runner direction, make it rotate the motor and drive and attack the tooth die head and attack the tooth process to the bolt body between transport plate and the transport runner.
Further setting: the blevile of push is including fixed the setting on the mounting bracket and towards the gathering device direction reciprocating motion push away material drive actuating cylinder and fixed the setting push away material and drive actuating cylinder piston rod and slide the scraping wings on the delivery board, and set up the processing groove that is used for placing the bolt body on the scraping wings the fixed actuating cylinder that drives of unloading that is provided with on the mounting bracket, the fixedly connected with discharge bar on the piston rod of the actuating cylinder is driven in the unloading, it is used for driving the discharge bar towards gathering device direction reciprocating motion to drive actuating cylinder, it drives actuating cylinder and pushes away the drive direction of material drive actuating cylinder and arranges perpendicularly to unload.
According to the arrangement, the bolt body in the conveying flow channel firstly falls into the processing groove of the material pushing plate, tapping is carried out on the bolt body through the tapping device, and after tapping is finished, the material pushing driving cylinder drives the material pushing plate to slide on the conveying plate and move towards the collecting device; subsequently, drive actuating cylinder drive discharge bar through unloading and move towards the collection device direction, push away the bolt body in the processing groove outside the processing groove and in dropping to material collecting device, reach the bolt body automatic discharge's after the tapping purpose.
Further setting: the collecting device comprises a collecting hopper arranged below the material pushing plate and a gate arranged at the discharge port of the collecting hopper, and the centrifugal device is arranged under the gate.
So set up, through blevile of push with the good bolt body propelling movement of tapping to collect and fight in to through opening and close of flashboard, will collect the purpose that the good bolt of fighting was conveyed to in the centrifugal device by him.
Further setting: the centrifugal device comprises a support frame, a centrifugal cylinder, a filtering screen cylinder and a driving motor, wherein the centrifugal cylinder is rotatably arranged on the support frame, the filtering screen cylinder is fixedly arranged in the centrifugal cylinder, and the driving motor is arranged on the support frame and used for driving the centrifugal cylinder to be positioned on the support frame to rotate.
So set up, the bolt body in the collection device conveys in the filter sieve section of thick bamboo of centrifuge drum, and it is sealed with the feed inlet on the filter sieve section of thick bamboo respectively through the closing plate afterwards, and the drive motor drive through the support frame filters a sieve section of thick bamboo and is in the centrifuge drum internal rotation, reaches centrifugal abluent purpose.
Further setting: the stirring device is characterized in that stirring claws are rotationally arranged in the material receiving hopper, a stirring motor is arranged on the outer wall of the material receiving hopper, a driving disc is fixedly connected to an output shaft of the stirring motor, a driving rod is eccentrically hinged to the driving disc, and one end, far away from the end connected with the driving disc, of the driving rod is hinged to the stirring claws.
So set up, drive the driving-disc through agitator motor and rotate, and then the actuating lever drives stirring claw and is in the reciprocal swing in the receipts hopper, makes its stirring claw carry out the effect of stirring to the bolt body in the collection hopper, improves the stability that bolt body automatic arrangement carried to conveying in the runner in the receipts hopper.
Further setting: the method also comprises a step of checking the external dimension of the cleaned nut body.
So set up, through carrying out overall dimension inspection to the bolt body after the surface treatment, improve the product quality of bolt body.
Compared with the prior art, the invention has the following advantages by adopting the technical scheme:
1. the blank of the bolt is automatically generated into the bolt body by sequentially carrying out pretreatment, forming processing, deoiling processing, tapping, cleaning processing and surface processing, so that the bolt has the effects of stable processing, improvement of the quality of nut processing products and high efficiency;
2. through the oil separation plate, impurities on the upper layer in the deoiling pool are isolated from the conveying area of the conveying belt, so that the purpose that some floating objects rotate along with the conveying belt is reduced;
3. the driving disc is driven to rotate by the stirring motor, and then the driving rod drives the stirring claw to be positioned in the material receiving hopper to swing in a reciprocating manner, so that the stirring claw can stir the bolt body in the material receiving hopper, and the stability of automatically arranging and conveying the bolt body in the material receiving hopper into the conveying flow channel is improved;
4. drive actuating cylinder drive scraping wings through pushing away and be in the conveyer plate and slide and move towards the collection device direction, the rethread is unloaded and is driven actuating cylinder drive stripper bar and move towards the collection device direction, pushes away the bolt body in the processing groove outside the processing groove and in dropping to the material collecting device, reaches the purpose to the bolt body automatic discharge after the tapping.
Drawings
FIG. 1 is a flow chart of a nut processing process;
FIG. 2 is a schematic structural diagram of a deoiling pool and a conveying device in a nut processing process flow diagram;
FIG. 3 is a schematic structural diagram of automatic nut feeding, tapping and discharging in the nut processing process;
FIG. 4 is an enlarged view taken at A in FIG. 3;
fig. 5 is a schematic view at a cross section of a centrifuge bowl in a centrifuge device.
In the figure: 1. a deoiling pool; 11. a cold header; 2. a conveying device; 21. a frame; 22. a conveying roller; 23. a conveyor belt; 24. an oil removal plate; 3. a discharge device; 31. a stripper plate; 41. a material receiving hopper; 42. a conveying flow channel; 43. a conveying plate; 44. a stirring claw; 45. a stirring motor; 46. a drive disc; 47. a drive rod; 5. a tapping device; 51. a mounting frame; 52. tapping drives the air cylinder; 53. rotating the motor; 54. tapping die heads; 6. a material pushing device; 61. a material pushing driving cylinder; 62. a material pushing plate; 621. processing a tank; 63. the discharging driving cylinder; 64. a discharge rod; 7. a collection device; 71. a collecting hopper; 72. a shutter plate; 8. a centrifugal device; 81. a support frame; 82. a centrifugal cylinder; 83. a filter screen cylinder; 84. a drive motor; 85. a feed inlet; 86. and (7) sealing the plate.
Detailed Description
The machining process of the nut is further explained with reference to the attached drawings.
The processing technology of the nut, as shown in fig. 1, includes the following steps:
s1, preprocessing: and (3) spheroidizing annealing the blank, heating the blank to 700-750 ℃, preserving heat for 3-4 hours, then cooling, controlling the temperature to be 650-700 ℃, keeping for 4-6 hours, discharging and air cooling to normal temperature.
S2, molding: and (3) placing the blank pretreated in the step (S1) into a cold header 11 for processing and forming to obtain a nut body with full and consistent corners and a through hole punched in the center.
S3, deoiling treatment: an oil removing pool 1 is arranged at an outlet of the cold header 11, and a conveying device 2 which is obliquely and upwards conveyed is arranged in the oil removing pool 1 as shown in a combined mode in fig. 2; the conveying device 2 comprises a frame 21, two conveying rollers 22 rotatably arranged on the frame 21 and a conveying belt 23 sleeved on the two conveying rollers 22, wherein the conveying belt 23 is a magnetic soft belt; arranging one of the conveying rollers 22 in the deoiling pool 1; in order to improve the cleanliness of the nut body conveyed by the conveying belt 23, an oil separation plate 24 is fixedly arranged in the deoiling pool 1.
A discharging device 3 for discharging the nut body from the conveying belt 23 is arranged on the frame 21 in the direction of the other conveying roller 22; the discharging device 3 comprises a discharging plate 31 fixedly arranged on the frame 21, and the discharging plate 31 is arranged below the conveying belt 23 and is obliquely arranged with the conveying surface of the conveying belt 23.
S4, tapping: as shown in fig. 2 to 4, the nut bodies collected by the discharging device 3 in S3 are collected in the receiving hopper 41 at a position right below the discharging plate 31 and arranged in the receiving hopper 41; meanwhile, a delivery flow channel 42 for delivering the nut body is vertically connected to a discharge port of the material receiving hopper 41, so that the bolt body is fed under the action of gravity; a conveying plate 43 is provided at an interval below the conveying flow path 42, and the conveying plate 43 is arranged perpendicular to the conveying flow path 42.
As shown in fig. 3, in order to improve the nut bodies in the material receiving hopper 41, the nut bodies are sequentially arranged and conveyed into the conveying flow passage 42, a stirring claw 44 is rotatably arranged in the material receiving hopper 41, a stirring motor 45 is fixedly arranged on the outer wall of the material receiving hopper 41, a driving disc 46 is fixedly connected to an output shaft of the stirring motor 45, the driving disc 46 is eccentrically hinged to a driving rod 47, one end, far away from the driving disc 46, of the driving rod 47 is hinged to the stirring claw 44, and the middle end of the stirring claw 44 is hinged to the material receiving hopper 41.
As shown in fig. 3 and 4, a tapping device 5 for tapping the nut body between the conveying flow path 42 and the conveying plate 43 is provided on one side of the conveying plate 43; the tapping device 5 comprises a mounting frame 51, a tapping driving cylinder 52 which is fixedly arranged on the mounting frame 51 and reciprocates towards the direction of the conveying flow channel 42, a rotating motor 53 which is fixedly connected with a piston rod of the tapping driving cylinder 52, and a tapping die head 54 which is fixedly arranged on a driving shaft of the rotating motor 53; the rotary motor 53 is driven by the tapping driving cylinder 52 to move towards the conveying flow passage 42, so that the rotary motor 53 drives the tapping die head 54 to tap the bolt body between the conveying plate 43 and the conveying flow passage 42.
As shown in fig. 3 and 4, a pushing device 6 for pushing out the tapped nut body to the other side of the conveying plate 43 is provided at one end of the conveying plate 43; the pushing device 6 includes a pushing driving cylinder 61 fixed on the mounting frame 51 for reciprocating motion, and a pushing plate 62 fixed on a piston rod of the pushing driving cylinder 61 and sliding on the conveying plate 43.
As shown in fig. 3 and 4, in order to improve the stability of the tapping device 5 in tapping the nut body between the conveying flow passage 42 and the conveying plate 43, a processing groove 621 for placing a bolt body is formed in the material pushing plate 62; meanwhile, the mounting frame 51 is fixedly provided with a discharging driving cylinder 63, the discharging driving cylinder 63 is perpendicular to the driving direction of the pushing driving cylinder 61, a discharging rod 64 is fixedly connected to a piston rod of the discharging driving cylinder 63, and the discharging driving cylinder 63 is used for driving the discharging rod 64 to reciprocate towards the direction of the processing tank 621 and pushing out the bolt body after tapping in the processing tank 621.
As shown in fig. 3 and 4, a collecting device 7 for receiving the nut body tapped on the material pushing plate 62 is arranged on one side of the conveying plate 43 away from the material pushing device 6; the collecting device 7 comprises a collecting hopper 71 arranged below the stripper plate 62 and a shutter 72 arranged at the discharge opening of the collecting hopper 71.
S5, cleaning: as shown in fig. 3, the nut body in the collecting device 7 is put into the centrifugal device 8 for washing, and the centrifugal device 8 is disposed right below the shutter 72.
As shown in fig. 3 and fig. 5, the centrifugal device 8 includes a supporting frame 81, a centrifugal cylinder 82 rotatably disposed on the supporting frame 81, a filtering screen cylinder 83 fixedly disposed in the centrifugal cylinder 82, and a driving motor 84 disposed on the supporting frame 81 for driving the centrifugal cylinder 82 to rotate on the supporting frame 81; the centrifugal cylinder 82 and the filtering screen cylinder 83 are provided with feed ports 85, and the feed ports 85 are provided with sealing plates 86 for opening/closing the feed ports 85.
S6, surface treatment: and (4) completely immersing the nut body obtained by cleaning in the step S5 in an aqueous solution containing a precipitated metal compound, and passing an electric current through the aqueous solution to precipitate metal substances in the solution and attach the metal substances to the immersed part of the nut to form the antirust layer.
S7, checking the external dimension: and (5) checking the external dimension of the cleaned nut body.
The working principle is as follows: firstly, the blank is pretreated, so that the product quality of the machined blank is improved; then, automatically forming a regular polygon nut body with a reserved through hole in the middle by a cold header 11; after the bolt body is cooled, the bolt body is conveyed into a deoiling pool 1 for deoiling treatment, so that oil stains on the surface of the bolt body are removed, and the bolt body after deoiling treatment in the deoiling pool 1 is conveyed into a discharging device 3 through a conveying device 2; secondly, the bolt body in the discharging device 3 is conveyed into a material receiving hopper 41, conveyed onto a conveying plate 43 through a conveying flow passage 42, subjected to a tapping process through a tapping device 5, and pushed out to the conveying plate 43 through a material pushing device 6 and dropped into a collecting device 7; thirdly, the tapped bolt body in the collecting device 7 is put into a centrifugal device 8 for cleaning, so that impurities on the bolt body are removed centrifugally, and the cleanliness of the bolt body is improved; finally, performing surface treatment on the cleaned bolt body to form an anti-rust layer on the surface of the nut body, so that the product quality of the bolt parent body is improved; further checking the bolt body through overall dimension checking; through the steps, the nut machining method has the effects of stable machining, improvement of the quality of nut machining products and high efficiency.
The present invention is not limited to the above-mentioned embodiments, and any technical solutions that fall under the spirit of the present invention fall within the scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The nut machining process is characterized by comprising the following steps of:
s1, preprocessing: spheroidizing annealing treatment is carried out on the blank, the blank is heated to 700-750 ℃, heat preservation is carried out for 3-4 hours, then cooling treatment is carried out, the temperature is controlled to be 650-700 ℃, the blank is kept for 4-6 hours, and the blank is taken out of a furnace and cooled to the normal temperature in an air cooling mode;
s2, molding: placing the pre-blank pretreated by the step S1 into a cold header (11) for processing and forming to obtain a nut body with full and consistent corners and a through hole punched in the center;
s3, deoiling treatment: an oil removing pool (1) is arranged at an outlet of the cold header (11), a conveying device (2) which is obliquely and upwards conveyed is arranged in the oil removing pool (1), and a discharging device (3) which is used for discharging the nut body from the conveying device (2) is arranged at the tail end of the conveying device (2);
s4, tapping: placing the nut bodies collected by the discharging device (3) in the S3 into a receiving hopper (41), wherein a discharge hole of the receiving hopper (41) is connected with a conveying flow channel (42) for conveying the nut bodies, conveying plates (43) are arranged below the conveying flow channel (42) at intervals, one side of each conveying plate (43) is provided with a tapping device (5) for tapping the nut bodies between the conveying flow channel (42) and the conveying plate (43), one end of each conveying plate (43) is provided with a material pushing device (6) for pushing the tapped nut bodies out to the other side of the conveying plate (43), and one side of each conveying plate (43) far away from the material pushing device (6) is provided with a collecting device (7) for receiving the tapped nut bodies;
s5, cleaning: putting the nut body in the collecting device (7) into a centrifugal device (8) for cleaning;
s6, surface treatment: and (4) completely immersing the nut body obtained by cleaning in the step S5 in an aqueous solution containing a precipitated metal compound, and passing an electric current through the aqueous solution to precipitate metal substances in the solution and attach the metal substances to the immersed part of the nut body to form an antirust layer.
2. The processing technology of the nut as claimed in claim 1, wherein: conveyor (2) include frame (21), rotate and set up two transfer rollers (22) and the cover on frame (21) and locate conveyer belt (23) on two transfer rollers (22), and one of them transfer roller (22) arrange in take off in oil bath (1), conveyer belt (23) are the soft area of magnetism, discharge apparatus (3) set up in another on frame (21) of transfer roller (22) direction.
3. The process for machining a nut according to claim 2, wherein: the discharging device (3) comprises a discharging plate (31) fixedly arranged on the rack (21), the discharging plate (31) is arranged below the conveying belt (23) and is obliquely arranged with the conveying surface of the conveying belt (23), and the material receiving hopper (41) is arranged under the discharging plate (31).
4. A nut processing technique according to claim 2 or 3, characterized in that: an oil separation plate (24) is fixedly arranged in the oil removal tank (1).
5. The processing technology of the nut as claimed in claim 1, wherein: the tapping device (5) comprises a mounting frame (51), a tapping driving cylinder (52) which is fixedly arranged on the mounting frame (51) and reciprocates towards the direction of the conveying flow channel (42), a rotating motor (53) which is fixedly connected with a piston rod of the tapping driving cylinder (52), and a tapping die head (54) which is fixedly arranged on a driving shaft of the rotating motor (53).
6. The processing technology of the nut as claimed in claim 5, wherein: blevile of push (6) including fixed set up on mounting bracket (51) and towards collection device (7) direction reciprocating motion push away material drive actuating cylinder (61) and fixed set up in pushing away material drive actuating cylinder (61) piston rod and slide in scraping wings (62) on delivery board (43), and offer on scraping wings (62) and be used for placing bolt body processing groove (621) it drives actuating cylinder (63) to be provided with to unload fixedly on mounting bracket (51), it drives fixedly connected with discharge bar (64) on the piston rod of actuating cylinder (63) to unload, it drives actuating cylinder (63) and is used for driving discharge bar (64) towards collection device (7) direction reciprocating motion to unload, it drives actuating cylinder (63) and pushes away the drive direction vertical arrangement that drives actuating cylinder (61).
7. The processing technology of the nut as claimed in claim 1, wherein: the collecting device (7) comprises a collecting hopper (71) arranged below the material pushing plate (62) and a gate plate (72) arranged at the discharge port of the collecting hopper (71), and the centrifugal device (8) is arranged right below the gate plate (72).
8. A nut processing technology according to claim 1 or 7, characterized in that: centrifugal device (8) include support frame (81), rotate centrifugal cylinder (82) of arranging on support frame (81), fixed set up in centrifugal cylinder (82) filter sieve section of thick bamboo (83) and set up and be used for driving centrifugal cylinder (82) on support frame (81) and be in pivoted driving motor (84) on support frame (81) all be provided with feed inlet (85) on centrifugal cylinder (82) and filter sieve section of thick bamboo (83) all be provided with on feed inlet (85) and be used for opening/close closing plate (86) of feed inlet (85).
9. The processing technology of the nut as claimed in claim 1, wherein: the stirring claw (44) is rotationally arranged in the material receiving hopper (41), a stirring motor (45) is arranged on the outer wall of the material receiving hopper (41), a driving disc (46) is fixedly connected to an output shaft of the stirring motor (45), a driving rod (47) is eccentrically hinged to the driving disc (46), and one end, far away from the driving disc (46), of the driving rod (47) is hinged to the stirring claw (44).
10. The processing technology of the nut as claimed in claim 1, wherein: the method also comprises a step of checking the external dimension of the cleaned nut body.
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| SU835588A1 (en) * | 1979-07-13 | 1981-06-07 | Государственный Институт По Проектиро-Ванию Метизных Заводов | Line for producing nuts by hot method |
| CN203853329U (en) * | 2014-06-04 | 2014-10-01 | 海盐宇星螺帽有限责任公司 | Oil-removing, washing, scrap-removing, rust-preventing and oiling all-in-one machine for nuts |
| CN104551561A (en) * | 2014-12-11 | 2015-04-29 | 海盐三马标准件有限公司 | Nut processing technology |
| CN105033571A (en) * | 2015-06-05 | 2015-11-11 | 柳州金茂机械有限公司 | Bolt machining process |
| CN205629269U (en) * | 2016-05-03 | 2016-10-12 | 浙江精艺标准件有限公司 | Discharge mechanism of cold heading machine |
| CN109014787A (en) * | 2018-08-30 | 2018-12-18 | 平湖巨龙紧固件有限公司 | A kind of processing technology of nut |
| CN109128729B (en) * | 2018-11-22 | 2020-08-21 | 台州蓝鲸清洗机械股份有限公司 | Nut machining process |
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