CN111660060B - Processing technology of countersunk cross screw - Google Patents
Processing technology of countersunk cross screw Download PDFInfo
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- CN111660060B CN111660060B CN202010335912.XA CN202010335912A CN111660060B CN 111660060 B CN111660060 B CN 111660060B CN 202010335912 A CN202010335912 A CN 202010335912A CN 111660060 B CN111660060 B CN 111660060B
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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
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
Abstract
The invention relates to a processing technology of a countersunk cross screw, which comprises the following steps: step one, steel bar rough drawing; step two, primary annealing; step three, fine drawing of the steel bars; step four, heading process: 1. setting heading equipment 2, shearing materials, 3, punching once, 4, punching twice, 5, punching three, 6 and stripping materials; step five, thread rolling; and step six, secondary annealing. The invention has the effect of ensuring the quality of screw molding.
Description
Technical Field
The invention relates to the technical field of screw production, in particular to a processing technology of a countersunk cross screw.
Background
The cross countersunk head screw is suitable for occasions where the nail head is not allowed to be exposed, but the surface of a part with a through hole is required to be provided with a corresponding conical countersunk hole. It is commonly found in machinery, electrical appliances and buildings. For connecting two parts to be connected. One of the parts is made through, and the other part is made into an internal thread hole.
The existing countersunk cross screw is generally subjected to heading procedures during machining, and during conventional heading operation, a steel column to be machined is generally placed in a bottom die, then the steel column placed in the bottom die is stamped by a stamping die at one time, and finally a screw is taken out of the bottom die, so that heading of the screw can be realized.
However, when the screw is thick and the die is formed in one step at present, the forming difficulty is high, so that the screw is not fully formed and the load of the die is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a processing technology of a countersunk cross screw, which can ensure the molding quality of the screw.
The above object of the present invention is achieved by the following technical solutions:
a processing technology of a countersunk cross screw comprises the following steps:
step one, steel bar rough drawing, wherein steel bars are selected for rough drawing to reduce the diameter of the steel bars;
step two, primary annealing, namely annealing the roughly-drawn steel bar to eliminate the internal stress of the steel bar;
step three, fine drawing of the steel bar, namely performing fine drawing on the steel bar subjected to annealing treatment again until the diameter of the steel bar is the same as that of the screw to be processed;
step four, heading process
1. Setting a heading device, wherein the heading device comprises a rack, an upper bottom plate horizontally arranged is fixedly connected to the rack, the lower side of the upper bottom plate is rotatably connected with a rotating column with a vertically arranged axis, the rotating upper side is abutted against the upper bottom plate, the rotating column is uniformly and vertically provided with a plurality of through holes by taking the axis as the center, and the rotating column is provided with inverted cone-shaped forming grooves corresponding to the lower sides of the through holes; the upper bottom plate is provided with a feed hole communicated with the through hole at a position corresponding to any through hole, the lower side of the rack corresponding to the rotating column is fixedly connected with a horizontally arranged lower bottom plate, the upper side of the lower bottom plate is abutted against the lower side of the rotating column, one side of the lower bottom plate corresponding to the feed hole of the upper bottom plate is sequentially provided with a first punching hole, a second punching hole, a third punching hole and a blanking hole, and the first punching hole, the second punching hole, the third punching hole and the blanking hole can be communicated with the through hole along with the rotation of the rotating column; the inner part of the first punching hole is vertically connected with a flat top punch head I of which the upper end can be inserted into the through hole in a sliding manner, the inner part of the second punching hole is vertically connected with a flat top punch head II of which the upper end can be inserted into the through hole in a sliding manner, the inner part of the third punching hole is vertically connected with a flat top convex cross punch head in a sliding manner, and the depth of the flat top punch head I, the flat top punch head II and the flat top convex cross punch head inserted into the; one end of the through hole, which is close to the forming groove, is also fixedly connected with an elastic locking sleeve with the aperture smaller than the diameter of the steel column, an ejection hole is formed in the position, corresponding to the blanking hole of the lower bottom plate, of the upper top plate, and an ejection column which can be inserted into the through hole is connected in the ejection hole in a vertical sliding manner;
2. shearing materials, namely shearing the precisely-drawn steel bars into short steel columns with proper lengths according to the use requirements;
3. firstly, punching, namely inserting the sheared steel column into any through hole of the lower rotating column through a blanking hole of the upper bottom plate, then rotating the rotating column, and punching the lower end of the short steel column through upward movement of the flat top punch when the through hole loaded with the short steel column reaches the upper side of a punched hole;
4. secondly, punching, namely when the rotating column continues to drive the short steel column after the first punching to rotate to the upper side of the second punching, punching the lower end of the short steel column by upward movement of the flat-top punch, and abutting the upper end of the short steel column through the upper bottom plate, so that the diameter of the lower end of the short steel column becomes thick and flat again, part of the diameter of the lower end of the short steel column is attached to the inner wall of the forming groove, and then resetting the flat-top punch;
5. thirdly, when the rotating column continues to drive the short steel column after the second punching to rotate to the upper side of the third punched hole, the lower end of the short steel column is punched through the three-way upward movement of the flat-top convex cross punch, and the upper end of the short steel column is abutted through the upper bottom plate, so that the lower end of the short steel column is flattened again and is completely abutted against the inner wall of the forming groove, and the cross groove at the end part of the screw is directly formed due to the cross convex block of the flat-top convex cross punch, so that the integral forming of the head part of the screw is completed, and then the flat-top convex cross punch;
6. stripping, namely when the rotating column continues to drive the three-punched short steel column to rotate to the upper side of the blanking hole, the short steel column clamped by the elastic clamping sleeve in the through hole can be ejected out of the blanking hole through downward movement of the ejection column in the ejection hole;
step five, thread rolling, namely, thread rolling is carried out on one end, far away from the head, of the short steel column which is bent by heading processing to form threads, and forming of the countersunk cross screw is completed;
and step six, secondary annealing, namely annealing the formed countersunk head cross screw again to eliminate the internal stress of the countersunk head cross screw.
Through adopting above-mentioned technical scheme, through the head of the many stamping forming countersunk head cross screw that adopts, can guarantee the shaping quality of the tip of countersunk head cross screw.
The present invention in a preferred example may be further configured to: the frame corresponds one side of upper plate feed port and still vertical rigid coupling has the track of rectifying, the orbital middle part of rectifying is vertical to be offered the diameter and the same muscle hole of wearing of finish drawing back reinforcing bar diameter, orbital upside of rectifying still rotates the plastic wheel that is connected with the level setting of a plurality of axes, and is a plurality of the plastic wheel all uses the axis of wearing the muscle hole evenly to set up as the center, and a plurality of plastic wheels are close to one side each other and form the passageway of rectifying, the frame corresponds orbital downside of rectifying and still is provided with shearing mechanism.
Through adopting above-mentioned technical scheme, the during operation, can insert the reinforcing bar one end after the finish draw and locate the passageway of rectifying that a plurality of plastic wheels constitute, then, when many reinforcing bars were through the passageway of rectifying, through a plurality of plastic wheel plastic, reentrant orbital muscle hole of wearing out of rectifying is worn out, cuts off the reinforcing bar of wearing out the muscle hole through shearing mechanism at last and can form short steel column.
The present invention in a preferred example may be further configured to: the shearing device comprises a cutting board horizontally arranged at the lower end of the deviation rectifying track, the cutting board is connected to the lower end of the deviation rectifying track in a sliding mode, and a driving mechanism capable of pushing the cutting board to slide is further arranged on one side of the deviation rectifying track.
Through adopting above-mentioned technical scheme, the during operation can drive the cutting board through actuating mechanism and slide to can cut off the reinforcing bar of wearing to establish through muscle hole lower extreme through the cutting board.
The present invention in a preferred example may be further configured to: the bottom plate is provided with a material pushing block capable of sliding between the lower side of the deviation rectifying track and the feeding hole in a reciprocating mode, and the middle of the material pushing block is vertically provided with a material placing hole capable of being communicated with the rib penetrating hole or the feeding hole.
Through adopting above-mentioned technical scheme, the during operation at first wears to establish the one end of reinforcing bar and crosses the muscle hole and insert and locate to put the material downthehole, then slides through the cutting board and cuts off the reinforcing bar, slides through the ejector pad, can send the reinforcing bar to the position of feed port through the ejector pad motion, and then makes things convenient for the feeding of reinforcing bar.
The present invention in a preferred example may be further configured to: the upper side of the upper bottom plate corresponding to the feeding hole is fixedly connected with a support, and the upper side of the support is fixedly connected with a pushing cylinder which is provided with a downward telescopic rod and can be inserted into the through hole.
Through adopting above-mentioned technical scheme, after inserting the feed port of following the bottom plate with short steel column and locating in the through-hole, drive the telescopic link downwardly extending through pushing away the jar, can make the telescopic link that pushes away the jar insert and locate in the through-hole to make short steel column insert completely and locate in the through-hole.
The present invention in a preferred example may be further configured to: the upper side of the frame corresponding to the shaping wheel is also rotatably connected with a guide wheel.
Through adopting above-mentioned technical scheme, the leading wheel of adoption can be convenient for the reinforcing bar get into and carry out the plastic between each plastic wheel.
The present invention in a preferred example may be further configured to: the upper side of the upper bottom plate corresponding to the ejection hole is fixedly connected with a bearing frame, the bearing frame is fixedly connected with a vertically arranged ejection cylinder, and a telescopic rod of the ejection cylinder is arranged downwards and fixedly connected to the ejection column.
Through adopting above-mentioned technical scheme, the during operation drives ejecting post downstream through the liftout cylinder and can be ejecting with the bracing piece in the rotation post through-hole, and then realizes the ejection of compact of screw.
The present invention in a preferred example may be further configured to: the lower end of the rack corresponding to the transmission shaft is fixedly connected with a servo motor.
Through adopting above-mentioned technical scheme, during operation, servo motor drives the transmission shaft and rotates, can drive the post of rotating and realize intermittent motion, and then accomplish the processing of work piece.
The present invention in a preferred example may be further configured to: and a discharging track is fixedly connected to the position of the lower bottom plate corresponding to the blanking hole.
Through adopting above-mentioned technical scheme, the during operation, after the work piece falls from the blanking hole of lower plate, will directly fall to ejection of compact track in, and then realize the ejection of compact of screw.
In summary, the invention includes at least one of the following beneficial technical effects:
can insert the reinforcing bar one end after the finish draw and locate the passageway of rectifying that a plurality of plastic wheels constitute, then, many reinforcing bars are through rectifying the passageway, through a plurality of plastic wheel plastic, get into orbital muscle hole of wearing of rectifying again and wear to establish and locate and put the material hole, then, slide through the cutting board and cut off the reinforcing bar, sliding through the ejector pad, can send the reinforcing bar to the position of feed port through the ejector pad motion, the rethread ejector pad drives the telescopic link downwardly extending, can make the telescopic link of ejector pad wear to establish the material hole of putting of ejector pad, insert the short steel post completely and locate in the through-hole, then, along with the rotation of rotation post, drive the short steel post and rotate, pass through in proper order, one dashes, two dashes, three dashes and finally accomplishes the ejection of compact, the head of the many times stamping forming cross screw that adopts, can guarantee the shaping quality of the tip of sinking cross screw.
Drawings
FIG. 1 is a process flow diagram of the invention.
Fig. 2 is a schematic view of the overall structure of the heading apparatus.
Fig. 3 is a schematic sectional structure of the rotary cylinder.
Fig. 4 is a structural diagram of a rib penetrating hole of the rotating column.
Fig. 5 is a schematic view of an exploded structure of the lower plate.
In the figure, 1, a frame; 11. correcting the track; 111. perforating the rib holes; 12. a shaping wheel; 121. a stepping motor; 13. a guide wheel; 14. a shearing device; 141. a cutting board; 142. a reciprocating cylinder; 2. an upper base plate; 21. a feed port; 22. a material pushing block; 221. a material placing hole; 222. a push-pull cylinder; 23. a support; 231. pushing the cylinder; 24. an ejection aperture; 241. a receiving frame; 242. ejecting the column; 243. ejecting the cylinder; 3. rotating the column; 31. a drive shaft; 311. a servo motor; 32. a through hole; 321. forming a groove; 322. an elastic locking sleeve; 4. a lower base plate; 41. punching a first hole; 411. a flat top punch I; 412. pushing the cylinder I; 42. punching a second hole; 421. a flat-top punch II; 422. pushing the cylinder II; 43. punching a hole III; 431. a flat-top convex cross punch; 432. pushing the cylinder III; 44. a blanking hole; 441. and (4) a discharge rail.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the invention discloses a processing technology of a countersunk cross screw, which comprises the following steps:
step one, steel bar rough drawing, wherein steel bars are selected for rough drawing to reduce the diameter of the steel bars;
step two, primary annealing, namely annealing the roughly-drawn steel bar to eliminate the internal stress of the steel bar;
step three, fine drawing of the steel bar, namely performing fine drawing on the steel bar subjected to annealing treatment again until the diameter of the steel bar is the same as that of the screw to be processed;
step four, heading process
1. Refer to fig. 2 and fig. 3, the equipment of taking lead is set up, the equipment of taking lead includes frame 1, the rigid coupling has the upper plate 2 that the level set up on frame 1, the rotation post 3 of the vertical setting of axis is provided with under upper plate 2, the axis position department rigid coupling of rotation post 3 has transmission shaft 31, the upper end of transmission shaft 31 is rotated and is connected in upper plate 2, rotate and vertically on the post 3 seted up a plurality of through-holes 32, a plurality of through-holes 32 use the axis of rotating post 3 as central evenly distributed, the shaping groove 321 of back taper has still all been seted up to the downside that rotates post 3 and correspond each through-hole 32, shaping groove 321 all sets up with the through-hole 32 coaxial line that corresponds, through-hole 32 is close to the one end of shaping groove 321 and still all rigid coupling elasticity locking cover 322, the inner aperture of elasticity locking cover 322 is less than. The feed port 21 has been seted up to the position that corresponds a through-hole 32 of rotation post 3 on the upper plate 2, and along with the rotation of rotation post 3, the feed port 21 can communicate in proper order with each through-hole 32 of rotation post 3.
Referring to fig. 2 and 4, frame 1 corresponds 2 feed port 21 of upper plate's one side still vertical rigid coupling has the track 11 of rectifying, the middle part of track 11 of rectifying is vertical to be seted up the diameter and the fine-draw back reinforcing bar diameter the same wears muscle hole 111, frame 1 corresponds the upside of track 11 of rectifying still to rotate and is connected with a plurality of plastic wheels 12, the axis level of a plurality of plastic wheels 12 sets up, and a plurality of plastic wheels 12 all use the axis of wearing muscle hole 111 evenly to set up as the center, a plurality of plastic wheels 12 are close to each other and form the passageway of rectifying along vertical direction between one side, frame 1 corresponds one side of a plurality of plastic wheels 12 still the rigid coupling has can drive each plastic wheel 12 pivoted step motor 121. The upper side of the frame 1 corresponding to the deviation rectifying channel is also rotatably connected with a guide wheel 13, and the axis of the guide wheel 13 is horizontally arranged. The frame 1 is provided with shearing mechanism 14 corresponding to the downside of the track 11 of rectifying still, and shearing mechanism 14 includes that the level sets up in the cutting board 141 of the track 11 lower extreme of rectifying, and cutting board 141 slides and connects in the track 11 lower extreme of rectifying, and one side of the track 11 of rectifying still is provided with the actuating mechanism that can promote cutting board 141 to slide, and actuating mechanism is the reciprocal jar 142 that the level set up in this embodiment, and the telescopic link rigid coupling of reciprocal jar 142 in cutting board 141.
The upper side of the bottom plate is also connected with a material pushing block 22 in a sliding manner, the material pushing block 22 can slide between the lower side of the deviation rectifying track 11 and the material feeding hole 21 in a reciprocating manner, the middle part of the material pushing block 22 is vertically provided with a material placing hole 221, the bottom plate is also fixedly connected with a horizontally arranged push-pull cylinder 222, a telescopic rod of the push-pull cylinder 222 is fixedly connected to the material pushing block 22, the push-pull cylinder 222 drives the material pushing block 22 to slide, and the material passing hole 111 or the material feeding hole 21 can be communicated with the material. The upper bottom plate 2 is further fixedly connected with a support 23 corresponding to the upper side of the feeding hole 21, a push cylinder 231 with a downward telescopic rod is fixedly connected to the upper side of the support 23, and the telescopic rod of the push cylinder 231 is downward arranged and can be inserted into the through hole 32.
Referring to fig. 3 and 5, a lower bottom plate 4 horizontally disposed is fixedly connected to the lower side of the frame 1 corresponding to the rotating column 3, the upper side of the lower bottom plate 4 abuts against the lower side of the rotating column 3, the lower end of the transmission shaft 31 penetrates through the lower side of the lower bottom plate 4, a servo motor 311 is fixedly connected to the lower end of the frame 1 corresponding to the transmission shaft 31, and an output shaft of the servo motor 311 is fixedly connected to the rotating shaft.
The lower base plate 4 is provided with a first punched hole 41, a second punched hole 42, a third punched hole 43 and a blanking hole 44 in sequence at a position corresponding to one side of the blanking hole 44 of the upper base plate 2, and the first punched hole 41, the second punched hole 42, the third punched hole 43 and the blanking hole 44 can be communicated with the through hole 32 along with the rotation of the rotating column 3; a flat top punch head 411 with an axis vertically arranged is vertically connected in the punching head 41 in a sliding mode, a pushing cylinder I412 is fixedly connected to the lower end, corresponding to the flat top punch head 411, of the rack 1, a telescopic rod of the pushing cylinder I412 is arranged upwards and fixedly connected to the lower end of the flat top punch head 411, and the pushing cylinder I412 drives the flat top punch head 411 to move upwards and can be inserted into the through hole 32 of the rotating column 3. A flat top punch head II 421 with an axis vertically arranged is vertically connected in the punching second 42 in a sliding manner, a pushing cylinder II 422 is fixedly connected to the lower end of the rack 1 corresponding to the flat top punch head I411, a telescopic rod of the pushing cylinder II 422 is upwards arranged and fixedly connected to the lower end of the flat top punch head II 421, and the pushing cylinder II 422 drives the flat top punch head II 421 to move upwards and can be inserted into the through hole 32 of the rotating column 3. A vertically arranged flat-top convex cross punch 431 is vertically connected in the punching third 43 in a sliding manner, a pushing cylinder third 432 is fixedly connected to the lower end of the rack 1 corresponding to the flat-top convex cross punch 431, a telescopic rod of the pushing cylinder third 432 is upwards arranged and fixedly connected to the lower end of the flat-top convex cross punch 431, and the pushing cylinder third 432 drives the flat-top convex cross punch 431 to move upwards and can be inserted into the through hole 32 of the rotating column 3. The depth of the flat top punch 411, the flat top punch 421 and the flat top convex cross punch 431 inserted into the through hole 32 gradually increases.
Referring back to fig. 4, the upper top plate is further provided with an ejection hole 24 at a position corresponding to the blanking hole 44 of the lower bottom plate 4, an ejection column 242 capable of being inserted into the through hole 32 is connected to the ejection hole 24 in a vertically sliding manner, a support frame 241 is fixedly connected to the upper side of the upper bottom plate 2 corresponding to the ejection hole 24, a vertically arranged ejection cylinder 243 is fixedly connected to the support frame 241, an expansion rod of the ejection cylinder 243 is arranged downward and fixedly connected to the upper end of the ejection column 242, and a discharge rail 441 is further fixedly connected to the lower bottom plate 4 corresponding to the blanking hole 44.
2. Shearing, namely, according to the use requirement, enabling one end of a finely-drawn steel bar to pass around the guide wheel 13 and penetrate through a shaping rail formed by a plurality of shaping wheels 12, then penetrating through a bar penetrating hole 111 of the shaping rail and extending into a material placing hole 221 of the material pushing block 22, driving the knife board 141 to move through the reciprocating cylinder 142, cutting the steel bar penetrating through the bar penetrating hole 111 into a short steel bar column with a proper length, and storing the short steel bar column through the material placing hole 221 of the material pushing block 22;
3. firstly, the pushing block 22 is driven to move by the pushing cylinder 222, the pushing block 22 is driven to move from the lower side of the deviation rectifying track 11 to the upper side of the feeding hole 21, the material placing hole 221 is communicated with the feeding hole 21, then the telescopic rod is driven to move downwards by the pushing cylinder 231, the short steel column in the material placing hole 221 is inserted into any through hole 32 of the lower rotating column 3 through the material dropping hole 44 of the upper bottom plate 2, then the rotating column 3 is driven to rotate by the servo motor 311, when the through hole 32 loaded with the short steel column is arranged on the upper side of the punching first 41, the flat punch first 411 is driven to move upwards by the pushing cylinder first 412 to punch the lower end of the short steel column, and as the upper end of the short steel column is inserted into the through hole 32 and is abutted by the upper bottom plate 2, the diameter of the lower end of the short steel column is thickened and flattened, and then the flat;
4. secondly, punching, when the rotating column 3 continues to drive the short steel column after the first punching to rotate to the upper side of the second punching 42, the pushing cylinder II 422 drives the flat-top punch II 421 to move upwards to punch the lower end of the short steel column, the upper end of the short steel column is abutted by the upper bottom plate 2, so that the diameter of the lower end of the short steel column becomes thick and flat again, part of the diameter begins to be attached to the inner wall of the forming groove 321, and then the flat-top punch II 421 resets;
5. thirdly, when the rotating column 3 continues to drive the short steel column after the second punching to rotate to the upper side of the third punched hole 43, the pushing cylinder 432 drives the flat-top convex cross punch 431 to move upwards in three directions to punch the lower end of the short steel column, the upper end of the short steel column is abutted by the upper bottom plate 2, so that the lower end of the short steel column is flattened again and is completely abutted to the inner wall of the forming groove 321, and the cross-shaped lug of the flat-top convex cross punch 431 also directly forms the cross groove at the end part of the screw so as to complete the integral forming of the head part of the screw, and then the flat-top convex cross punch 431 is reset;
6. and (3) material stripping, when the rotating column 3 continues to drive the short steel column after the three-punching to rotate to the upper side of the blanking hole 44, the ejecting cylinder 243 drives the ejecting column 242 in the ejecting hole 24 to move downwards, so that the short steel column clamped by the elastic clamping sleeve in the through hole 32 can be ejected out of the blanking hole 44 and slide down from the discharging track 441, and the heading processing of the screw is realized.
Step five, thread rolling, namely, thread rolling is carried out on one end, far away from the head, of the short steel column which is bent by heading processing to form threads, and forming of the countersunk cross screw is completed;
and step six, secondary annealing, namely annealing the formed countersunk head cross screw again to eliminate the internal stress of the countersunk head cross screw.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The processing technology of the countersunk cross screw is characterized by comprising the following steps:
step one, steel bar rough drawing, wherein steel bars are selected for rough drawing to reduce the diameter of the steel bars;
step two, primary annealing, namely annealing the roughly-drawn steel bar to eliminate the internal stress of the steel bar;
step three, fine drawing of the steel bar, namely performing fine drawing on the steel bar subjected to annealing treatment again until the diameter of the steel bar is the same as that of the screw to be processed;
step four, heading process
1. The device comprises a frame (1), wherein an upper base plate (2) which is horizontally arranged is fixedly connected to the frame (1), a rotating column (3) with an axis which is vertically arranged is rotatably connected to the lower side of the upper base plate (2), the upper side of the rotating column (3) is abutted to the upper base plate (2), a plurality of through holes (32) are uniformly and vertically formed in the rotating column (3) by taking the axis as a center, and inverted-cone-shaped forming grooves (321) are formed in the rotating column (3) corresponding to the lower sides of the through holes (32); the feeding hole (21) communicated with the through hole (32) is formed in the position, corresponding to any through hole (32), of the upper base plate (2), the lower side, corresponding to the rotating column (3), of the rack (1) is fixedly connected with a horizontally arranged lower base plate (4), the upper side of the lower base plate (4) abuts against the lower side of the rotating column (3), one side, corresponding to the feeding hole (21) of the upper base plate (2), of the lower base plate (4) is sequentially provided with a first punched hole (41), a second punched hole (42), a third punched hole (43) and a blanking hole (44), and the first punched hole (41), the second punched hole (42), the third punched hole (43) and the blanking hole (44) can be communicated with the through hole (32) along with the rotation of the rotating column (3); a first flat-top punch head (411) with the upper end capable of being inserted into the through hole (32) is vertically connected in the first punching hole (41) in a sliding manner, a second flat-top punch head (421) with the upper end capable of being inserted into the through hole (32) is vertically connected in the second punching hole (42) in a sliding manner, a convex flat-top cross punch head (431) is vertically connected in the third punching hole (43) in a sliding manner, and the depth of the first flat-top punch head (411), the second flat-top punch head (421) and the convex flat-top cross punch head (431) inserted into the through hole (32) is; one end of the through hole (32) close to the forming groove (321) is fixedly connected with an elastic locking sleeve (322) with the aperture smaller than the diameter of the steel column, an ejection hole (24) is formed in the position, corresponding to the blanking hole (44) of the lower bottom plate (4), of the upper bottom plate (2), and an ejection column (242) capable of being inserted into the through hole (32) is connected in the ejection hole (24) in a sliding mode;
2. shearing materials, namely shearing the precisely-drawn steel bars into short steel columns with proper lengths according to the use requirements;
3. firstly, inserting the sheared steel column into any through hole (32) of the lower rotating column (3) through a blanking hole (44) of the upper bottom plate (2), then rotating the rotating column (3), when the through hole (32) loaded with the short steel column reaches the upper side of a punching hole I (41), punching the lower end of the short steel column through upward movement of a flat top punch I (411), and because the upper end of the short steel column is inserted into the through hole (32) and is abutted through the upper bottom plate (2), the diameter of the lower end of the short steel column is thickened and flattened, and then the flat top punch I (411) is reset;
4. secondly, punching, namely when the rotating column (3) continues to drive the short steel column after the first punching to rotate to the upper side of the second punched hole (42), punching the lower end of the short steel column through upward movement of the second flat-top punch (421), and abutting the upper end of the short steel column through the upper bottom plate (2), so that the diameter of the lower end of the short steel column is thickened and flattened again, part of the short steel column is attached to the inner wall of the forming groove (321), and then the second flat-top punch (421) is reset;
5. thirdly, when the rotating column (3) continues to drive the short steel column after the second punching to rotate to the upper side of the third punched hole (43), the lower end of the short steel column is punched through upward movement of the flat-top convex cross punch (431), and the upper end of the short steel column is abutted through the upper bottom plate (2), so that the lower end of the short steel column is flattened again and is completely abutted against the inner wall of the forming groove (321), and the cross groove at the end part of the screw is directly formed due to the cross convex block of the flat-top convex cross punch (431), so that the integral forming of the head part of the screw is completed, and then the flat-top convex cross punch (431) is reset;
6. stripping, namely when the rotating column (3) continues to drive the short steel column subjected to three-punching to rotate to the upper side of the blanking hole (44), downwards moving through an ejection column (242) in the ejection hole (24), and ejecting the short steel column clamped by the elastic clamping sleeve in the through hole (32) from the blanking hole (44);
step five, thread rolling, namely, thread rolling is carried out on one end, far away from the head, of the short steel column which is processed by heading to form threads, and forming of the countersunk cross screw is completed;
and step six, secondary annealing, namely annealing the formed countersunk head cross screw again to eliminate the internal stress of the countersunk head cross screw.
2. The process for machining the countersunk cross screw as claimed in claim 1, wherein the process comprises the following steps: frame (1) corresponds one side of upper plate (2) feed port (21) still vertical rigid coupling has deviation rectifying track (11), the middle part of deviation rectifying track (11) is vertical to be seted up diameter and the same muscle hole (111) of wearing of finish draw back reinforcing bar diameter, the upside of deviation rectifying track (11) still rotates shaping wheel (12) that are connected with the horizontal setting of a plurality of axes, and is a plurality of shaping wheel (12) all use the axis of wearing muscle hole (111) to evenly set up as the center, and a plurality of shaping wheels (12) are close to one side each other and form the passageway of rectifying, the downside that frame (1) corresponds deviation rectifying track (11) still is provided with shearing mechanism (14).
3. The process for machining the countersunk cross screw as claimed in claim 2, wherein the process comprises the following steps: the shearing device (14) comprises a cutting board (141) horizontally arranged at the lower end of the deviation rectifying track (11), the cutting board (141) is connected to the lower end of the deviation rectifying track (11) in a sliding mode, and a driving mechanism capable of pushing the cutting board (141) to slide is further arranged on one side of the deviation rectifying track (11).
4. The process for machining the countersunk cross screw as claimed in claim 2, wherein the process comprises the following steps: the bottom plate is provided with a material pushing block (22) capable of sliding between the lower side of the deviation rectifying track (11) and the feeding hole (21) in a reciprocating mode, and the middle of the material pushing block (22) is vertically provided with a material placing hole (221) capable of being communicated with the rib penetrating hole (111) or the feeding hole (21).
5. The process for machining the countersunk cross screw as claimed in claim 1, wherein the process comprises the following steps: the upper side of the upper bottom plate (2) corresponding to the feeding hole (21) is fixedly connected with a support (23), and the upper side of the support (23) is fixedly connected with a push cylinder (231) which is provided with a telescopic rod downwards and can be inserted into the through hole (32).
6. The process for machining the countersunk cross screw as claimed in claim 2, wherein the process comprises the following steps: the upper side of the frame (1) corresponding to the shaping wheel (12) is also rotatably connected with a guide wheel (13).
7. The process for machining the countersunk cross screw as claimed in claim 1, wherein the process comprises the following steps: the upper bottom plate (2) is fixedly connected with a bearing frame (241) corresponding to the upper side of the ejection hole (24), the bearing frame (241) is fixedly connected with an ejection cylinder (243) which is vertically arranged, and an expansion rod of the ejection cylinder (243) is downwards arranged and fixedly connected with the ejection column (242).
8. The process for machining the countersunk cross screw as claimed in claim 1, wherein the process comprises the following steps: the axis position of the rotating column (3) is fixedly connected with a transmission shaft (31) of which the lower end extends out of the lower bottom plate (4), and the lower end of the rack (1) corresponding to the transmission shaft (31) is also fixedly connected with a servo motor (311).
9. The process for machining the countersunk cross screw as claimed in claim 1, wherein the process comprises the following steps: and a discharging track (441) is fixedly connected to the position of the lower bottom plate (4) corresponding to the blanking hole (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335912.XA CN111660060B (en) | 2020-04-25 | 2020-04-25 | Processing technology of countersunk cross screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335912.XA CN111660060B (en) | 2020-04-25 | 2020-04-25 | Processing technology of countersunk cross screw |
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| Publication Number | Publication Date |
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| CN111660060A CN111660060A (en) | 2020-09-15 |
| CN111660060B true CN111660060B (en) | 2021-04-27 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB282817A (en) * | 1926-12-31 | 1928-07-26 | Adolf Ziegler | Process and machine for making integral securing-dies or screw-plates |
| JPS62227543A (en) * | 1986-03-27 | 1987-10-06 | Asahi Okuma Ind Co Ltd | Two-dies three-blows type header |
| CN2379233Y (en) * | 1999-06-30 | 2000-05-24 | 杨东佐 | Multistation cold upsetting formation machine |
| DE102008038185B3 (en) * | 2008-08-19 | 2010-01-28 | Sieber Forming Solutions Gmbh | Method and device for the production of fastening or connecting means with radial outer contours, in particular screws or threaded bolts |
| US9120143B2 (en) * | 2013-01-15 | 2015-09-01 | National Machinery Llc | Cut-off end surface improvement |
| CN105880925A (en) * | 2014-12-18 | 2016-08-24 | 李富会 | Outer hexagonal bolt machining process |
| CN110605577A (en) * | 2019-10-18 | 2019-12-24 | 奇华(惠州)塑胶五金制品有限公司 | Screw beating and upsetting-riveting integrated machine |
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