CN111805189B - Preformed armor rod hemispherical end forming tool bit, tool bit manufacturing method and forming device - Google Patents
Preformed armor rod hemispherical end forming tool bit, tool bit manufacturing method and forming device Download PDFInfo
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- CN111805189B CN111805189B CN202010640302.0A CN202010640302A CN111805189B CN 111805189 B CN111805189 B CN 111805189B CN 202010640302 A CN202010640302 A CN 202010640302A CN 111805189 B CN111805189 B CN 111805189B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/34—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/165—Milling-cutters characterised by physical features other than shape with chipbreaking or chipdividing equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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Abstract
The invention discloses a preformed armor rod hemispherical end forming tool bit, a tool bit manufacturing method and a forming device, belongs to the technical field of electric power fitting production, manufacturing and processing, and solves the problems that the conventional preformed armor rod end forming and processing speed is low or the structural design of processing equipment is complex. The cutter head manufacturing method comprises the working procedures of material preparation, sub-cutter head forming, sub-cutter head arrangement and the like; the tool bit mainly comprises four identical metal strips with square sections, and the end of each metal strip is provided with a sub tool bit; the forming device comprises a workbench, a power unit, a clamping unit and a guide unit. The cutter head, the cutter head manufacturing method and the forming device applying the cutter head solve the problem of forming and processing the end of the pre-twisted wire with low cost, high efficiency and reliability, and have important significance in the field of forming the pre-twisted wire of the electric power fitting.
Description
Technical Field
The invention belongs to the technical field of electric power hardware fitting production, manufacturing and processing, and particularly relates to a preformed pre-twisted wire hemispherical end forming tool bit and a preparation method thereof, wherein the tool bit is easy to process, the preformed pre-twisted wire hemispherical end forming speed is high, the tool bit is easy to process, the pre-twisted wire tip discharge phenomenon is effectively avoided, and the safety of a power grid is effectively guaranteed; the invention also relates to a forming device, in particular using the cutter head.
Background
The preformed armor rods are connecting fittings used for overhead power conductors and overhead power cable terminals, suspensions, joints and the like. The preformed armor rods generally include aluminum wire preformed armor rods and aluminum-clad steel preformed armor rods. Among them, the aluminum wire preformed armor rods are widely used as main conductive wires. It is known that uneven electric fields are generated in uneven conductors or fittings on high-voltage lines of 110kV and above, and when the voltage rises to a certain value around the uneven electric fields and near electrodes with small curvature radii, electricity generation occurs due to air dissociation, and corona is formed. Corona occurs, in addition to halation, as well as squeak discharge sound, and the corona current is an intermittent high pulse current that causes active power loss and radio communication interference, creating ozone and nitrogen oxides that contaminate the environment. Therefore, the end part of the preformed armor rods needs to be formed into a hemispherical shape or a parrot mouth shape so as to avoid the phenomenon of point discharge at the end part of the preformed armor rods.
The end part of the preformed armor rods is manually ground into a required shape on a grinding wheel according to hand feeling and experience at the beginning, the forming speed is low, the product consistency is poorer, and corona hidden troubles still exist for products which are not well ground. And in addition, the edge angles and burrs are formed at the splicing positions of the upper die and the lower die which are formed by pressing the dies, the secondary polishing needs to be manually carried out, the working procedure period is long, the processing speed is low, and the production cost is high. Later, some enterprises introduced automation equipment, but the automation equipment was complex in design, high in manufacturing cost, and high in maintenance cost. For example, the chinese patent with the grant publication number CN101695733B, the grant publication date 2011.08.17, the name of the invention creation being a parrot mouth-shaped overhanging preformed helical thread forming device and a forming method thereof discloses an automatic device capable of processing the end part of the preformed helical thread, which mainly comprises a chassis, a main motor, a worm wheel, a worm, a cutter, a motor, a contact switch, a control cam, a guide rail groove, a tightening wheel, a bracket and a foot switch; the worm wheel and the worm are arranged on the upper part of one side of the case through the mounting bracket, and four control cams are arranged on a worm wheel shaft and respectively comprise a first control cam, a second control cam, a third control cam and a fourth control cam; the lower part of the control cam is provided with four contact switches which are respectively a first contact switch, a second contact switch, a third contact switch and a fourth contact switch, and the four control cams are respectively corresponding to the four contact switches; the main motor is arranged on one side of the case, a small belt pulley is arranged on an output shaft of the main motor, a large belt pulley is arranged at one end of the worm, the small belt pulley passes through a transmission belt, and four control cams are arranged on a worm wheel shaft driven by the transmission worm and the worm wheel to operate; the cutting motor is arranged on the upper part of the case, a cutting tool bit is arranged on an output shaft of the cutting motor, a guide rail groove is arranged on one side of the output shaft of the motor, a limiter is arranged at the front end of the guide rail groove, a tightening wheel is arranged on the outer side of the guide rail groove, and the tightening wheel is arranged at the other end of the worm wheel shaft; the bracket is arranged on the case, and the foot switch is arranged at the lower part of the case, therefore, the technical scheme is complex, the complex structure of the mechanical equipment can bring the problem of high manufacturing cost, and simultaneously, the problems are accompanied with a series of problems of high failure rate, high maintenance cost and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preformed armor rod hemispherical end forming tool bit and the preparation method thereof, wherein the tool bit is easy to machine, the preformed armor rod hemispherical end is high in forming speed and easy to machine, the preformed armor rod tip discharge phenomenon is effectively avoided, and the safety of a power grid is effectively guaranteed; the invention also relates to a forming device, in particular using the cutter head.
The invention is realized by the following technical scheme:
a preparation method of a preformed armor rod hemispherical end forming cutter head comprises the following operation steps:
a. preparing four identical metal strips with square sections;
b. firstly, processing one of the metal strips; any side surface of the metal strip is used as a blade surface, and the opposite surface of the blade surface is a chip removal surface; a blade edge contour is sketched on the blade edge surface, and the blade edge contour is consistent with the warp contour of the semi-spherical end part of the preformed armor rods; feeding along the edge profile towards the chip removal surface, grinding away blanks except the metal strip substrate, and feeding towards the bottom of the metal strip substrate in the feeding process towards the chip removal surface so as to form a chip removal landslide inclined in a downward direction between the edge surface and the chip removal surface; thus, the processing of one sub-cutter head is finished;
c. b, machining the other three metal strips by using the same method according to the procedure in the step b, and obtaining other three sub-cutter heads after machining is finished;
d. splicing the four sub-cutter heads into an integral cutter head, wherein the lower vertexes A of the blade profiles of the four sub-cutter heads are consistent and face inwards when the four sub-cutter heads are spliced; the four lower vertexes A are focused together to form a pole S of the semi-spherical end part of the preformed armor rods, and the four blade profiles outline the semi-spherical surface profile of the semi-spherical end part of the preformed armor rods.
Preferably, the chip removal surface is drawn with an arc-shaped chip removal contour, and the chip removal contour is lower than the blade contour in height; and (4) uniformly and proportionally cutting and polishing the cutting edge profile to the chip removal profile to form a chip removal landslide communicated with the outside after polishing.
Preferably, the surface body of the sub-cutter head is polished.
A cutting head made by the method described above.
A cutter head comprises four identical metal strips with square sections;
the end of each metal strip is provided with a sub-cutter head; the sub-cutter head comprises a cutting edge consistent with the warp contour of the semi-spherical end part of the preformed armor rods, and a chip removal landslide for removing chips is arranged in the direction from the cutting edge to the opposite surface of the cutting edge;
four metal strips are spliced to form the cutter head, the lower vertexes A of the blade profiles of the four blades are uniformly placed inwards, the four lower vertexes A are focused together to form a pole S of the semi-spherical end part of the preformed armor rods, and the surface profile of the semi-sphere of the semi-spherical end part of the preformed armor rods is sketched out by the profiles of the four blades.
Preferably, the side surface of the metal strip on which the cutting edge is arranged is a cutting edge surface, and the side surface opposite to the cutting edge surface is a chip removal surface; the chip removal surface is provided with a chip removal profile which is lower than the blade profile in height, and the chip removal profile is ground and cut in a uniform proportion from the blade profile to the chip removal profile to form a chip removal landslide communicated with the outside.
The pre-twisted wire hemispherical end forming device applying the cutter head comprises a workbench, a power unit, a clamping unit and a guide unit;
the power unit, the clamping unit and the guide unit are all arranged on the workbench;
a rotating shaft of the power unit clamps the cutter head through the clamping unit;
a guide unit fixed on the workbench is arranged right in front of the cutter head.
Preferably, the power unit is a three-phase asynchronous motor, and the motor is fixedly arranged on the workbench through a fastener;
the clamping unit comprises a shaft sleeve, one end of the shaft sleeve is fixedly sleeved with the rotating shaft through a fastener, the other end of the shaft sleeve is provided with a cutter head accommodating groove matched with the cutter head, and the cutter head is fixed in the cutter head accommodating groove;
the guide unit comprises a guide seat fixed on the workbench, and a preformed armor rod through hole corresponding to the position of the tool bit is arranged on the guide seat;
preferably, the shaft sleeve is provided with a threaded hole communicated with the tool bit accommodating groove, and the tool bit fastening bolt is matched with the threaded hole to press the tool bit in the tool bit accommodating groove.
Preferably, the preformed armor rod through hole is a reducing hole with the outlet caliber smaller than the inlet caliber, a hollow guide column fixed on the vertical plate is arranged on the outer side of the preformed armor rod through hole, and the inner diameter of the hollow guide column is equal to the inlet caliber of the preformed armor rod through hole.
Compared with the prior art, the invention has the beneficial effects that:
the cutter head has the advantages of ingenious design concept, simple structure, easy preparation and high quality, and can finish the processing at one time; the four spliced tool bits hold the semi-spherical end of the preformed armor rods as if one hand holds the semi-spherical end of the preformed armor rods, the circumferential track of the profile of the cutting edge forms the semi-spherical end, and the cut end part sphere is smooth, free of burrs, high in quality and qualified in one-time processing;
the cutter head manufacturing method is easy to realize, the procedures of material preparation, sub-cutter head processing and forming, sub-cutter head arraying method and the like are mainly adopted, the processing cost is low, and the sub-cutter head arraying is simple and ingenious;
the forming device has the advantages of high forming speed and high processing efficiency, effectively shortens the processing and forming period, and brings considerable economic benefits to enterprises;
the forming device has simple structural design, basically no failure rate and basically no maintenance cost;
the forming device is easy to realize, the manufacturing cost is low, the cost for purchasing each whole set of equipment of the motor is within 1500 yuan, and compared with other automatic forming equipment, the cost is very low; because the device has low cost, a plurality of devices can be prepared on one production line for production at the same time, the production efficiency is maximized at the lowest cost, and the economic benefit of enterprises is maximized;
the cutter head and the forming device using the cutter head solve the problem of forming and processing the end of the preformed armor rod reliably with low cost and high efficiency, have great significance in the field of forming preformed armor rods of electric power fittings, and are particularly suitable for forming and processing the end of the preformed armor rod of an aluminum wire.
Drawings
FIG. 1 is a schematic view of a workpiece preformed armor rod construction;
FIG. 2 is a schematic structural view of the preformed armor rods before forming;
FIG. 3 is a schematic structural view of the preformed armor rods after the hemispherical ends are formed;
FIG. 4 is a first schematic view of a sub-bit configuration of the present invention;
FIG. 5 is a second schematic view of the sub-tool bit structure of the present invention;
FIG. 6 is a third schematic view of a sub-cutter head of the present invention;
FIG. 7 is a first schematic view of a tool tip configuration of the present invention;
FIG. 8 is a second schematic view of a tool tip configuration of the present invention;
FIG. 9 is a third schematic view of a tool tip configuration of the present invention;
FIG. 10 is a schematic view of the cutter head of the present invention machining the ends of the preformed armor rods;
FIG. 11 is a schematic top view of the forming apparatus of the present invention;
FIG. 12 is a schematic view of the forming device of the present invention in a front view;
FIG. 13 is a schematic perspective view of a molding apparatus according to the present invention;
FIG. 14 is a schematic perspective view of a second embodiment of the molding apparatus of the present invention;
FIG. 15 is a schematic structural view of example 7 of the present invention.
In the figure: 1. a cutter head; 11. a metal strip; 111. a blade face; 112. chip removal surfaces; 12. a sub-cutter head; 121. a blade; 122. chip removal landslide; 123. a blade profile; 124. a chip removal profile; 125. a warp contour; 2. a work table; 3. a power unit; 31. a rotating shaft; 32. a motor; 4. a clamping unit; 41. a shaft sleeve; 42. a cutter head fastening bolt; 5. a guide unit; 51. a guide seat; 511. a guide transverse plate; 512. a guide vertical plate; 513. a waist-shaped groove; 514. locking the bolt; 515. a hold-down bolt; 52. perforating preformed armor rods; 53. a hollow guide post; 6. pre-stranding; 61. the preformed armor rods are arranged at the hemispherical end parts.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
a preparation method of a preformed armor rod hemispherical end forming cutter head comprises the following operation steps:
a. preparing four identical metal strips 11 with square cross sections;
b. firstly, processing one of the metal strips 11; any side surface of the metal strip 11 is taken as an edge surface 111, and the opposite surface of the edge surface 111 is taken as a chip discharging surface 112; a blade edge profile 123 is sketched on the blade surface 111, and the blade edge profile 123 is consistent with a warp line profile 125 of the preformed armor-tipped hemispherical end 61; feeding along edge profile 123 towards chip surface 112, grinding away the stock material of the metal strip 11 other than the base body, and feeding towards the bottom of the base body of the metal strip 11 during feeding towards chip surface 112, so that a chip slide 122 inclined in a downward direction is formed between edge surface 111 and chip surface 112; thus, one sub-bit 12 is finished;
c. according to the process of the step b, machining the other three metal strips 11 by using the same method, and obtaining other three sub-tool bits 12 after machining is finished;
d. splicing the four sub-cutter heads 12 into the whole cutter head 1 with a square section, wherein the lower vertexes A of the blade outlines 123 of the four sub-cutter heads 12 are consistent and face inwards during splicing; the four lower vertices a are focused together to form the pole S of the pretwisted hemispherical end 61, and the four blade profiles 123 outline the hemispherical surface profile of the pretwisted hemispherical end 61.
Preferably, an arcuate chip ejection contour 124 is delineated on the chip surface 112, the chip ejection contour 124 being lower in height than the blade contour 123; and uniformly proportional cutting and grinding are carried out from the blade edge profile 123 to the chip removal profile 124, and a chip removal slide slope 122 communicated with the outside is formed after grinding.
Preferably, the surface body of the sub-cutter head 12 needs to be polished and ground.
A cutting head made by the method described above.
A cutter head comprises four identical metal strips with square sections;
the end of each metal strip is provided with a sub-cutter head; the sub-cutter head comprises a cutting edge consistent with the warp contour of the semi-spherical end part of the preformed armor rods, and a chip removal landslide for removing chips is arranged in the direction from the cutting edge to the opposite surface of the cutting edge;
four metal strips are spliced to form a cutter head with a square bottom, lower vertexes A of the blade profiles of the four blades are uniformly placed inwards, the four lower vertexes A are focused together to form a pole S of the semi-spherical end part of the preformed armor rod, and the surface profile of a semi-sphere of the semi-spherical end part of the preformed armor rod is outlined by the four blade profiles.
Preferably, the side surface of the metal strip on which the cutting edge is arranged is a cutting edge surface, and the side surface opposite to the cutting edge surface is a chip removal surface; the chip removal surface is provided with a chip removal profile which is lower than the blade profile in height, and the chip removal profile is ground and cut in a uniform proportion from the blade profile to the chip removal profile to form a chip removal landslide communicated with the outside.
The preformed armor rod hemispherical end forming device for the tool bit comprises a workbench, a power unit, a clamping unit and a guide unit;
the power unit, the clamping unit and the guide unit are all arranged on the workbench;
a rotating shaft of the power unit clamps the cutter head through the clamping unit;
a guide unit fixed on the workbench is arranged right in front of the cutter head.
Preferably, the power unit is a three-phase asynchronous motor, and the motor is fixedly arranged on the workbench through a fastener;
the clamping unit comprises a shaft sleeve, one end of the shaft sleeve is fixedly sleeved with the rotating shaft through a fastener, the other end of the shaft sleeve is provided with a cutter head accommodating groove matched with the cutter head, and the cutter head is fixed in the cutter head accommodating groove;
the guide unit comprises a guide seat fixed on the workbench, and a preformed armor rod through hole corresponding to the position of the tool bit is arranged on the guide seat;
preferably, the shaft sleeve is provided with a threaded hole communicated with the tool bit accommodating groove, and the tool bit fastening bolt is matched with the threaded hole to press the tool bit in the tool bit accommodating groove.
Preferably, the preformed armor rod through hole is a reducing hole with the outlet caliber smaller than the inlet caliber, a hollow guide column fixed on the vertical plate is arranged on the outer side of the preformed armor rod through hole, and the inner diameter of the hollow guide column is equal to the inlet caliber of the preformed armor rod through hole.
The attached drawing of the specification is a schematic diagram of a single preformed armor rod structure shown in figure 1. After being cut by the cutting machine, namely before the end part is formed, the structural shape of the end part of the pre-paying wire is as shown in figure 2 of the attached drawing, and the end part is a plane; the shape of the end of the preformed armor rods to be processed is shown in figure 3, and the end is hemispherical.
Example 1:
the preparation method of the embodiment comprises the following operation steps:
a. preparing four identical metal strips 11 with square cross sections;
b. firstly, processing one of the metal strips 11; any side surface of the metal strip 11 is taken as an edge surface 111, and the opposite surface of the edge surface 111 is taken as a chip discharging surface 112; a blade edge profile 123 is sketched on the blade surface 111, and the blade edge profile 123 is consistent with a warp line profile 125 of the preformed armor-tipped hemispherical end 61; feeding along the blade profile 123 towards the chip surface 112 to grind away blanks outside the base body of the metal strip 11, and in the process of feeding towards the chip surface 112, feeding towards the bottom of the base body of the metal strip 11 is needed at the same time, so that a chip removal landslide 122 inclined in the downward direction is formed between the blade surface 111 and the chip surface 112, and the chip removal landslide forms a chip removal channel with high smooth-degree; each surface of the sub-bit 12 requires high smoothness. After the machining according to the step b is completed, the machining of one sub-cutter head 12 is completed;
c. according to the process of the step b, machining the other three metal strips 11 by using the same method, and obtaining other three sub-tool bits 12 after machining is finished;
d. splicing the four sub-cutter heads 12 into the whole cutter head 1 with a square section, wherein the lower vertexes A of the blade outlines 123 of the four sub-cutter heads 12 are consistent and face inwards during splicing; the four lower vertices a are focused together to form the pole S of the pretwisted hemispherical end 61, and the four blade profiles 123 outline the hemispherical surface profile of the pretwisted hemispherical end 61. The method for manufacturing the tool bit is easy to realize, the working procedures of material preparation, sub-tool bit machining forming, sub-tool bit arraying method and the like are mainly adopted, the machining cost is low, and the sub-tool bit arraying is simple and ingenious.
The cutter head prepared by the cutter head preparation method comprises four identical metal strips 11 with square sections; the whole body of the spliced four metal strips is also in a regular shape, so that the tool bit and the forming device can be fastened and assembled conveniently. The end of each metal strip 11 is provided with a sub-cutter head 12, and the sub-cutter head 12 is formed by cutting and grinding the end part of the metal strip 11; specifically, the sub-cutter head 12 comprises a cutting edge 121 consistent with the warp contour 125 of the pre-twisted hemispherical end 2, chip removal landslides 122 for chip removal are arranged in the direction from the cutting edge 121 to the opposite surface of the cutting edge 121, and each chip removal landslide is communicated with the outside after being spliced; the four metal strips 11 are spliced to form the cutter head 1 with a square bottom, the lower vertexes A of the blade outlines 123 of the four blades 121 are uniformly placed inwards, the four lower vertexes A are focused together to form a pole S of the preformed armor rod hemispherical end part 2, and the four blade outlines 123 outline the hemispherical surface outline of the preformed armor rod hemispherical end part 2. The circumferential track of the blade profile is the hemispherical surface profile. Inserting the preformed armor rods into a cutter head, rotating the cutter head at a high speed, forming the planar end into a hemispherical end by a cutting edge, and discharging the cut waste blank materials through a chip removal landslide.
The design concept of the embodiment is ingenious, the structure is simple, the preparation is easy, and the high-quality one-step processing is finished; the four spliced tool bits just like a hand supporting the semi-spherical end part of the preformed armor rods, the circumferential track of the outline of the cutting edge forms the semi-spherical end part, and the end part ball body formed by cutting is smooth and burr-free, high in quality and qualified in one step, and does not need to be improved and polished for the second time.
Example 2:
this embodiment corresponds essentially to embodiment 1, in which the chip evacuation profile 124 is designed in an arc-like manner.
As shown in fig. 4-10 of the drawings attached to the specification, the side of the metal strip 11 on which the cutting edge 121 is provided is a cutting edge surface 111, and the side opposite to the cutting edge surface 111 is a chip surface 112; an arc-shaped chip removal profile 124 is drawn on the chip removal surface 112, the chip removal profile 124 is lower than the blade profile 123 in height, and the chip removal landslide 122 communicated with the outside is formed by grinding and cutting in a uniform proportion from the blade profile 123 to the chip removal profile 124. The profile shape of the chip discharging profile of the embodiment can be the same as that of the blade, and can also be an arc shape different from that of the blade. The transition molding from the blade profile 123 to the arc chip removal profile 124 is in a uniform proportion, so that the friction resistance is small, the waste blank is discharged conveniently, and in addition, the blade can be sharper.
Example 3:
this embodiment is a hemispherical end forming device of preformed armor rods, as shown in fig. 11-14 of the drawings attached to the specification. This embodiment can be applied to the cutter head explained in embodiment 1 or embodiment 2.
The present embodiment mainly comprises a worktable 2, a power unit 3, a clamping unit 4 and a guiding unit 5;
the power unit 3, the clamping unit 4 and the guide unit 5 are all arranged on the workbench 2;
the rotating shaft 31 of the power unit 3 clamps the cutter head 1 through the clamping unit 4;
a guide unit 5 fixed to the table 2 is provided directly in front of the cutter head 1.
Wherein, power unit 3 is three-phase asynchronous motor 32, and motor 32 is fixed the setting on workstation 2 through the fastener. The clamping unit 4 comprises a shaft sleeve 41, one end of the shaft sleeve 41 is fixedly sleeved with the rotating shaft 31 through a fastener, a cutter head accommodating groove matched with the cutter head 1 is formed in the other end of the shaft sleeve 41, and the cutter head 1 is fixed in the cutter head accommodating groove. The guide unit 5 comprises a guide seat 51 fixed on the workbench 2, and the guide seat 51 is provided with a preformed armor rod perforation 52 corresponding to the position of the cutter head 1.
The action process of the embodiment is simple, the power supply is switched on, the motor rotates at a high speed to drive the cutter head to rotate at a high speed, and the preformed armor rods to be formed penetrate through the preformed armor rod through holes to be inserted into the cutter head. The circumferential track of the blade profile is the hemispherical surface profile. After the preformed armor rods are inserted into the cutter head, the cutter head rotating at a high speed forms the end part of the plane into a hemispherical end part, and the cut waste blank materials are discharged through a chip removal landslide. And (4) after the forming, drawing out the preformed armor rods, and then inserting the preformed armor rods into the next workpiece, and repeating the steps.
The cutter head applied in the embodiment has the advantages of ingenious design concept, simple structure, easy preparation and high quality, and can finish the processing at one time; the four spliced tool bits hold the semi-spherical end of the preformed armor rods as if one hand holds the semi-spherical end of the preformed armor rods, the circumferential track of the profile of the cutting edge forms the semi-spherical end, the cut and molded end part sphere is smooth and burr-free, the quality is high, the end part sphere is qualified and molded once, and secondary improvement and polishing are not needed;
the forming device of the embodiment has the advantages that the forming speed is high, the processing efficiency is high, the forming processing is completed at one time, the processing and forming period is effectively shortened, and considerable economic benefits are brought to enterprises;
the forming device of the embodiment has simple structural design, basically no failure rate and basically no maintenance cost;
the forming device of the embodiment is easy to realize, has low manufacturing cost, and has very low cost compared with other automatic forming devices along with the cost of purchasing each whole set of equipment of the motor within 1500 Yuanren Min Bin; because the device of the embodiment has low cost, a plurality of devices can be prepared on one production line for production at the same time, the production efficiency is maximized at the lowest cost, and the economic benefit of enterprises is maximized;
in a word, this embodiment has solved the preformed armor rod end forming processing problem with very low cost, high efficiency reliably, and is significant in electric power fitting preformed armor rod shaping field, is particularly useful for the preformed armor rod tip forming processing of aluminium wire.
Example 4:
based on embodiment 3, the specific assembly relationship between the tool bit and the shaft sleeve in this embodiment is as follows: the sleeve 41 is provided with a threaded hole communicating with the bit accommodating groove. The size of the cutting head accommodating groove is suitable for just inserting a cutting head, and the cutting head fastening bolt 42 is screwed in from the threaded hole until the cutting head fastening bolt 42 compresses the cutting head. Two threaded holes can be formed and are arranged in the direction of 90 degrees, namely, the two adjacent surfaces of the cutter head are screwed into the cutter head fastening bolt 42 respectively, and the cutter head fastening bolt 42 needs to be pressed on the splicing seam of the two metal strips.
Example 5:
based on embodiment 3, the specific assembly relationship between the tool bit and the shaft sleeve in this embodiment is as follows: the sleeve 41 is provided with a threaded hole communicating with the bit accommodating groove. The size of the cutting head accommodating groove is suitable for just inserting a cutting head, and the cutting head fastening bolt 42 is screwed in from the threaded hole until the cutting head fastening bolt 42 compresses the cutting head. Four threaded holes can be formed, namely the tool bit fastening bolts 42 are screwed in from four side surfaces of the tool bit respectively, and the fastening bolts 42 need to be pressed on the splicing seam of the two metal strips.
Example 6:
in this embodiment, the pre-paid wire through hole is designed to be a variable diameter type based on embodiment 3. That is, the preformed armor rod through hole 52 is a variable diameter hole with an outlet caliber smaller than an inlet caliber, a hollow guide column 53 fixed on the vertical plate is arranged outside the preformed armor rod through hole 52, and the inner diameter of the hollow guide column 53 is equal to the inlet caliber of the preformed armor rod through hole 52. The guide holder sets up in the dead ahead of tool bit to the distance between and the tool bit is no longer than 1 mm. The outlet aperture of the preformed armor rods is equivalent to the diameter value of the preformed armor rods. The reducing preformed armor rod hole plays a good guiding role, and the preformed armor rod can be accurately inserted into the cutter head after penetrating into the preformed armor rod hole.
Example 7:
in the embodiment, the guide seat is designed to be adjustable and detachable on the basis of the embodiment 6.
The profile specifications of the cutting edges of the used cutter heads of the preformed armor rods with different diameters are different, and the cutter heads can be directly replaced by disassembling the cutter head fastening bolts. Because the preformed armor rods are not matched in perforation specification at the moment, and the guide seat needs to be replaced, the guide seat can be designed to be detachable and adjustable so that the device is universal. As shown in fig. 15, the guide base of this embodiment includes a horizontal guide plate 511 and a vertical guide plate 512 fixedly connected to the horizontal guide plate 511, a waist-shaped groove 513 is formed in the horizontal guide plate 511, a bolt hole is formed in a corresponding position of the workbench, a locking bolt 514 passes through the waist-shaped groove 513 and the bolt hole to fix the horizontal guide plate 511 to the workbench, and four corners of the horizontal guide plate 511 can be further reinforced by a pressing bolt 515. When the distance between the guide vertical plate 512 and the cutter head needs to be adjusted, the locking bolt 514 is loosened, and the position of the guide transverse plate 511 is moved along the waist-shaped groove 513; when the guide seat needs to be replaced, the locking bolt 514 and the pressing bolt 515 can be directly disassembled and assembled.
The shaping device of the embodiment has strong universality and can meet the shaping requirements of preformed armor rods with different specifications.
In summary, the present invention is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications in the shape, structure, characteristics and spirit of the claims of the present invention should be included in the claims of the present invention.
Claims (10)
1. The preparation method of the preformed armor rod hemispherical end molding cutter head is characterized by comprising the following operation steps of:
a. preparing four identical metal strips with square sections;
b. firstly, processing one of the metal strips; any side surface of the metal strip is used as a blade surface, and the opposite surface of the blade surface is a chip removal surface; a blade edge contour is sketched on the blade edge surface, and the blade edge contour is consistent with the warp contour of the semi-spherical end part of the preformed armor rods; feeding along the edge profile towards the chip removal surface, grinding away blanks except the metal strip substrate, and feeding towards the bottom of the metal strip substrate in the feeding process towards the chip removal surface so as to form a chip removal landslide inclined in a downward direction between the edge surface and the chip removal surface; finishing the machining of one sub-cutter head;
c. b, machining the other three metal strips by using the same method according to the procedure in the step b, and obtaining other three sub-cutter heads after machining is finished;
d. splicing the four sub-cutter heads into an integral cutter head, wherein the lower vertexes A of the blade profiles of the four sub-cutter heads are consistent and face inwards when the four sub-cutter heads are spliced; the four lower vertexes A are focused together to form a pole S of the semi-spherical end part of the preformed armor rods, and the four blade profiles outline the semi-spherical surface profile of the semi-spherical end part of the preformed armor rods.
2. The method for preparing the preformed armor rod hemispherical end molding cutter head according to claim 1, wherein the method comprises the following steps: drawing an arc-shaped chip removal contour on the chip removal surface, wherein the height of the chip removal contour is lower than that of the blade; and (4) uniformly and proportionally cutting and polishing the cutting edge profile to the chip removal profile to form a chip removal landslide communicated with the outside after polishing.
3. The method for preparing the preformed hemispherical end cutter head as claimed in claim 1 or 2, wherein the method comprises the following steps: the surface body of the sub-cutter head needs to be polished.
4. A tool bit produced by the production method according to any one of claims 1 to 3.
5. The cutter head of claim 4 wherein:
comprises four identical metal strips with square cross sections;
the end of each metal strip is provided with a sub-cutter head; the sub-cutter head comprises a cutting edge consistent with the warp contour of the semi-spherical end part of the preformed armor rods, and a chip removal landslide for removing chips is arranged in the direction from the cutting edge to the opposite surface of the cutting edge;
four metal strips are spliced to form the cutter head, the lower vertexes A of the blade profiles of the four blades are uniformly placed inwards, the four lower vertexes A are focused together to form a pole S of the semi-spherical end part of the preformed armor rods, and the surface profile of the semi-sphere of the semi-spherical end part of the preformed armor rods is sketched out by the profiles of the four blades.
6. The cutter head according to claim 4 or 5 wherein: the side surface of the metal strip, on which the cutting edge is arranged, is a cutting edge surface, and the side surface opposite to the cutting edge surface is a chip removal surface; the chip removal surface is provided with a chip removal profile which is lower than the blade profile in height, and the chip removal profile is ground and cut in a uniform proportion from the blade profile to the chip removal profile to form a chip removal landslide communicated with the outside.
7. A preformed hemispherical end forming device using the cutter head as claimed in any one of claims 4 to 6, which is characterized in that: comprises a workbench, a power unit, a clamping unit and a guide unit;
the power unit, the clamping unit and the guide unit are all arranged on the workbench;
a rotating shaft of the power unit clamps the cutter head through the clamping unit;
a guide unit fixed on the workbench is arranged right in front of the cutter head.
8. The pretwisted hemispherical end forming device of claim 7, wherein: the power unit is a three-phase asynchronous motor, and the motor is fixedly arranged on the workbench through a fastener;
the clamping unit comprises a shaft sleeve, one end of the shaft sleeve is fixedly sleeved with the rotating shaft through a fastener, the other end of the shaft sleeve is provided with a cutter head accommodating groove matched with the cutter head, and the cutter head is fixed in the cutter head accommodating groove;
the guide unit comprises a guide seat fixed on the workbench, and preformed armor rod through holes corresponding to the positions of the tool bits are formed in the guide seat.
9. The pretwisted hemispherical end forming device of claim 8, wherein: the shaft sleeve is provided with a threaded hole communicated with the tool bit accommodating groove, and the tool bit fastening bolt is matched with the threaded hole to tightly press the tool bit in the tool bit accommodating groove.
10. The pretwisted hemispherical end forming device of claim 8, wherein: the preformed armor rod is characterized in that the preformed armor rod through hole is a reducing hole with the outlet caliber smaller than the inlet caliber, a hollow guide column fixed on the vertical plate is arranged on the outer side of the preformed armor rod through hole, and the inner diameter of the hollow guide column is equal to the inlet caliber of the preformed armor rod through hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010640302.0A CN111805189B (en) | 2020-07-06 | 2020-07-06 | Preformed armor rod hemispherical end forming tool bit, tool bit manufacturing method and forming device |
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| CN202010640302.0A CN111805189B (en) | 2020-07-06 | 2020-07-06 | Preformed armor rod hemispherical end forming tool bit, tool bit manufacturing method and forming device |
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| CN111805189B true CN111805189B (en) | 2021-06-11 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111673010B (en) * | 2020-07-06 | 2024-05-17 | 江苏双汇电力发展股份有限公司 | Preformed armor rod hemispherical end forming tool bit and forming device using tool bit |
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| CN210731252U (en) * | 2019-07-31 | 2020-06-12 | 上海快点机器人科技有限公司 | Tool bit, blade and equipment for grinding electrode cap |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0479090A1 (en) * | 1990-10-04 | 1992-04-08 | Sumitomo Electric Industries, Limited | Throw away cutter |
| CN101524771A (en) * | 2008-12-31 | 2009-09-09 | 长城汽车股份有限公司 | Ball end repairing cutter |
| CN205254205U (en) * | 2015-10-19 | 2016-05-25 | 台州市椒江鑫可精密机械有限公司 | Modular end face seal groove milling cutter |
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| CN111805189A (en) | 2020-10-23 |
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