WO2018090316A1 - 一种新型绳头锥套的制造方法 - Google Patents

一种新型绳头锥套的制造方法 Download PDF

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Publication number
WO2018090316A1
WO2018090316A1 PCT/CN2016/106355 CN2016106355W WO2018090316A1 WO 2018090316 A1 WO2018090316 A1 WO 2018090316A1 CN 2016106355 W CN2016106355 W CN 2016106355W WO 2018090316 A1 WO2018090316 A1 WO 2018090316A1
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Prior art keywords
steel pipe
seamless steel
end portion
taper sleeve
cold extrusion
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PCT/CN2016/106355
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English (en)
French (fr)
Inventor
蔡卫东
葛俊旭
王坚
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南通昌荣机电有限公司
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Priority to PCT/CN2016/106355 priority Critical patent/WO2018090316A1/zh
Publication of WO2018090316A1 publication Critical patent/WO2018090316A1/zh

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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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  • the invention relates to the technical field of mechanical manufacturing, and in particular to a method for manufacturing a novel rope head taper sleeve.
  • the casting process includes waxing, trimming, tree-forming, viscose, shell-making (more than 5 layers), dewaxing, air drying, roasting, steel making, casting, sand cleaning, Cut and raise the riser, sanding, and normalizing 14 ways to shape.
  • the production of the rope head taper sleeve by the casting process has high production cost and poor production efficiency.
  • the length and outer diameter of the seamless steel pipe are set according to the size of the taper sleeve to be produced, the seamless steel pipe has a first end portion and a second end portion;
  • the first end portion of the seamless steel pipe has a first oblique cone, the first oblique vertebral body forms a first right-angled trapezoid in a radial cross section, and the first oblique vertebral body is subjected to cold extrusion processing, a side of the right angle side of the radial section of the first oblique body forms a transition slope with the second end;
  • the second end of the seamless steel tube has a second oblique cone
  • the second oblique body has a radial cross section Forming a second right angle trapezoid, one side of the right angle side of the radial section of the second oblique body is connected to the first oblique body through the transition slope;
  • the cold extrusion processing of the first end portion of the seamless steel pipe comprises at least one cold extrusion processing of the first end portion of the seamless steel pipe, the first end of the seamless steel pipe
  • the number of times of cold extrusion processing is the number of times the first end portion of the seamless steel pipe is subjected to cold extrusion processing in accordance with the outer diameter of the first end portion of the taper sleeve to be produced.
  • the seamless steel pipe is subjected to cold extrusion processing through two molds.
  • the cold extrusion processing of the second end portion of the seamless steel pipe comprises at least one cold extrusion processing of the second end portion of the seamless steel pipe, the second end of the seamless steel pipe
  • the number of times of cold extrusion processing is the number of times the second end portion of the seamless steel pipe is cold-extruded according to the outer diameter of the second end portion of the taper sleeve to be produced.
  • the seamless steel pipe is subjected to cold extrusion processing by two molds.
  • the seamless steel pipe is subjected to cold extrusion processing by a hydraulic press or a crank press, and the tonnage of the hydraulic press or the crank press The pressing force selection required to form the second end of the taper sleeve according to the second end of the seamless steel pipe.
  • the manufacturing method of the present application has fewer steps than the manufacturing method of manufacturing the taper taper sleeve in the casting process. Significantly increase production efficiency while reducing production costs.
  • FIG. 1 is a schematic view of a rope head taper sleeve according to an embodiment of the present application.
  • FIG. 2 is a flow chart of a production process of a rope head taper sleeve according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a seamless steel pipe that completes step S11 according to an embodiment of the present application.
  • step S12 is a schematic view of a seamless steel pipe that completes step S12 according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a seamless steel pipe that completes step S13 according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a seamless steel pipe that completes step S15 according to an embodiment of the present application.
  • FIG. 1 is a schematic view of a taper sleeve 1 according to an embodiment of the present application; as shown in the drawing, the present application provides a production process of a taper sleeve for manufacturing a rope head as shown in FIG. 1 .
  • the taper sleeve has a circular top surface 10 and a bottom surface 13 and has a first end portion 14 and a second end portion 15.
  • the first end portion 14 has a screw hole 141 at one end thereof at the first end portion 14
  • the bottom surface 13 has a vertical opening 131.
  • the first end portion 14 has two perforations in the radial direction. The two through holes are opposite.
  • the second end portion 15 has an opening at one axial end, and the bottom surface 13 has a slope 132 on the top surface 10.
  • FIG. 2 is a flow chart of the production process of the taper sleeve of the present application, the rope cone of the present application.
  • the sleeve is produced by the die forging process using the seamless steel pipe.
  • the main production processes include: S10, blanking; S11, the first cold extrusion processing of the first end of the seamless steel pipe, S12, the first of the seamless steel pipe.
  • the second end is subjected to a second cold extrusion process to form a transitional bevel, S13, a cold extrusion process on the second end of the seamless steel pipe, S14, and a flattened seamless steel pipe after being cooled and extruded, S15.
  • step S10 is performed to obtain a seamless steel pipe.
  • the size of the seamless steel pipe is set according to the size of the taper sleeve to be produced, wherein the seamless steel pipe has a first end and a second end, and the first end One end of the portion has a first opening, and one end of the second end portion opposite the first end has a second opening.
  • step S11 the first end portion 21 of the seamless steel pipe 2 is subjected to a first cold extrusion process, and the seamless steel pipe 2 is subjected to a first cold extrusion process through two molds.
  • the first end portion 21 of the seamless steel tube 2 has a first hollow cylinder 211 and a first inclined cone 212.
  • the first hollow cylinder 211 has a first opening 213 at one end and a first inclined cone 212 at the other end.
  • the cross section of the first oblique cone 212 has a beveled edge 214 and a right angled edge 215; the second end 22 is a second hollow cylinder 221, and one end of the second hollow cylinder 221 is connected to the first oblique cone of the first end 21 212, the other end of which has a second opening 222.
  • step S12 is performed to perform a second cold extrusion process on the first end portion 21 of the seamless steel pipe 2, and the second cold extrusion of the seamless steel pipe 2 in step S11 is performed through two molds.
  • the outer diameter of the first opening 213 of the first end portion 21 of the seamless steel pipe 2 is reduced, and the depth of the first opening 213 extending toward the second end portion 22 is also reduced, which also indicates the length of the first hollow cylinder 211. Shortened, the horizontal length of the first inclined cone 212 is elongated.
  • Extrusion processing and the number of cold extrusion processes depends on the first end portion 14 of the taper sleeve 1
  • the first oblique vertebral body is subjected to cold extrusion processing after S12, and a side of the right angle side and a second end portion form a transition slope in the radial section of the first oblique vertebral body.
  • the outer end 14 of the taper sleeve 1 of the present application has an outer diameter of 28 mm
  • the outer diameter of the seamless steel pipe 2 before processing is 45 mm
  • the limit of the seamless steel pipe 2 is between 0.7 and 0.75.
  • the ratio of the outer diameter of the first end portion 14 of the taper sleeve 1 to the outer diameter of the originally unprocessed seamless steel tube 2 is 0.62, which is smaller than the limit shrinkage coefficient, so that it cannot be disposable at one time.
  • the outer diameter of the first end portion 21 of the seam steel pipe 2 is reduced from 45 mm to 28 mm.
  • the present application uses two cold extrusion processes on the first end portion 21 of the seamless steel pipe 2 to gradually reduce the outer diameter of the first opening 213 of the first end portion 21 of the seamless steel pipe 2, the first cold extrusion
  • the outer diameter of the first end portion 21 of the seamless steel pipe 2 is first reduced to 33.75 mm, and the outer diameter and processing of the first opening 213 of the first end portion 21 of the seamless steel pipe 2 processed by the first cold extrusion are processed.
  • the ratio of the outer diameter of the first opening 213 of the first end portion 21 of the front seamless steel pipe 2 is 0.75, which exactly meets the upper limit of the limit shrinkage coefficient, so that the first opening 213 of the seamless steel pipe 2 can be used at one time.
  • the outer diameter is reduced from 45mm to 33.75mm.
  • the outer diameter of the first end portion 21 of the seamless cold-rolled steel tube 2 which has been subjected to the first cold extrusion processing is reduced to 25.3 mm by the second cold extrusion processing, and the seamless steel pipe 2 subjected to the second cold extrusion processing
  • the ratio of the outer diameter of the first opening 213 to the outer diameter of the first opening 213 of the seamless cold-worked seamless steel pipe 2 is 0.75, which just meets the upper limit of the limit shrinkage factor, so that the seamlessness can be seamless
  • the outer diameter of the first opening 213 of the steel pipe 2 is reduced from 33.75 mm to 25.3 mm.
  • the present application is a preferred embodiment of the cold extrusion processing of the first end portion 21 of the seamless steel pipe 2, which uses the minimum number of cold extrusion processes to reduce the cost of the machining process and improve the processing efficiency.
  • the number of cold extrusion processes can be increased, and will not be described here.
  • step S13 is performed, the second end portion 22 of the seamless steel pipe 2 is subjected to sub-cold extrusion processing, and the seamless steel pipe 2 completing step S12 is cold-extruded through two molds, and the seamless steel pipe 2 is
  • the second end portion 22 is formed by the second hollow cylinder 221 to form a second oblique cone, the second oblique cone has a radial cross section of a right angle trapezoid, and the right angle side of the right angle trapezoid and the first oblique cone pass The transition slopes are connected to each other
  • the outer diameter of the second opening 222 of the two end portions 22 conforms to the outer diameter of the opening 151 of the second end portion 15 of the taper sleeve, and the second end portion 22 of the seamless steel tube 2 can be subjected to only one cold extrusion process.
  • the ratio of the outer diameter is 0.73, which is larger than the lower limit of the ultimate necking coefficient of the seamless steel pipe 2, so that the outer diameter of the second opening 222 of the seamless steel pipe 2 can be reduced from 45 mm to 33 mm at one time.
  • step S13 the cold extrusion process is performed using a hydraulic press, and the tonnage of the hydraulic press is selected according to the pressing force required to form the second end portion 15 of the taper sleeve of the second end portion 22 of the seamless steel pipe 2, and is pressed.
  • the force can be calculated by the calculation formula of the pressing force, and the calculation formula is
  • P is the pressing force of the pressing part
  • K is the coefficient related to the selected equipment
  • F is the projected area of the forging perpendicular to the pressing force
  • ⁇ b is the strength authority of the metal at the extrusion die forging temperature
  • D is the original outer diameter of the seamless steel pipe 2
  • d is the outer diameter of the opening of the second end portion 15 of the rope head taper 1.
  • This application uses a hydraulic press, so the K factor is 10, F is 1590mm 2 , D is 45mm, d is 35.48mm, ⁇ b is 245MPa, the above values are brought into the calculation formula, and the P extrusion is 2665690N, so this application uses The 315 ton hydraulic press is cold extruded.
  • the hydraulic press can be replaced by a crank press, wherein the number of strokes of the crank press is less than 30 times and 40 times per second, and the K factor is 12.5; the number of strokes of the crank press is greater than 30 times and 40 times per second, K factor Is 15.
  • step S14 is performed, flattening, and the seamless steel pipe 2 is flattened by two molds, the two molds are respectively located on the left and right sides of the seamless steel pipe 2, and the seamless steel pipe 2 is extruded, so that The seamless steel tube 2 is flat.
  • step S15 is performed to vertically cut off the first slope 261 of the first end portion 21 of the seamless steel pipe 2, and form a vertical opening on the first end portion 21, as shown in FIG.
  • step S16 is performed to strike the first opening 213 of the first end portion 21 of the seamless steel pipe 2.
  • the hole tapping, the first end portion 14 has two perforations in the radial direction, and the two perforations are opposite.
  • the above manufacturing method is a preferred embodiment of the present application, and the manufacturing method of the present application can be adjusted according to the size of the taper sleeve to be produced, especially the cold extrusion of the first end and the second end of the seamless steel pipe.
  • the number of press processes can be adjusted.
  • the taper taper sleeve of the present application is produced by cold extrusion processing using a seamless steel pipe, and the casting process is used in the past, and the production process of the present application is performed. Compared with casting and processing, it can increase production efficiency, save raw materials and save production costs.

Abstract

一种新型绳头锥套（1）的制造方法，其使用无缝钢管（2）并通过模锻工艺的冷挤压加工生产绳头锥套（1），绳头锥套（1）的制造方法包括下料、对无缝钢管（2）的第一端部（21）进行冷挤压加工、对无缝钢管（2）的第二端部（22）进行冷挤压加工、压扁无缝钢管（2）、对无缝钢管（2）进行切边及打孔攻丝。由于该制造方法较以铸造工序制造绳头锥套的制造方法的工序少，大幅提升生产效率，同时降低生产成本。

Description

一种新型绳头锥套的制造方法 技术领域
本发明涉及机械制造技术领域，尤其涉及一种新型绳头锥套的制造方法。
背景技术
目前原材料价格大幅度下跌，生产工序成本进一步上涨，铸造工序有制蜡、修整、成树、粘浆、制壳(5层以上)、脱蜡、风干、焙烧、炼钢、浇铸、清砂、切浇冒口、打磨、正火14道之多才能成型。以铸造工序生产绳头锥套,其生产成本高及生产效率不佳。
发明内容
针对现有技术中的不足，本发明的目的是提供一种新型绳头锥套的制造方法。
为了解决上述技术问题，本申请揭示了一种新型绳头锥套的制造方法，包括：
S1.下料,取得无缝钢管,所述无缝钢管的长度及外径根据欲生产的绳头锥套的尺寸设定，所述无缝钢管具有第一端部及第二端部；
S2.对所述无缝钢管的第一端部进行冷挤压加工,使所述无缝钢管的第一端部的外径符合欲生产的绳头锥套的第一端部的外径，所述无缝钢管的第一端部具有第一斜锥体，所述第一斜椎体径向截面形成第一直角梯形；对所述第一斜椎体进行冷挤压加工，在所述第一斜椎体径向截面中直角边的一侧与第二端部形成过渡斜面；
S3.对所述无缝钢管的第二端部进行冷挤压加工,使所述无缝钢管的第二 端部的外径符合欲生产的绳头锥套的第二端部的外径尺寸，所述无缝钢管的第二端部具有第二斜锥体，所述第二斜椎体径向截面形成第二直角梯形，所述第二斜椎体径向截面中直角边的一侧通过所述过渡斜面与所述第一斜椎体相连；
S4.压扁所述无缝钢管，形成扁平状的无缝钢管；
S5.垂直切除所述第一斜锥体径向截面为斜边的一侧并在所述无缝钢管形成垂直开口；
S6.在所述无缝钢管的第一端部进行轴向打孔攻丝，并在所述第一端部径向形成两个相对的穿孔。
优选地，对所述无缝钢管的第一端部进行冷挤压加工包括对所述无缝钢管的第一端部进行至少一次的冷挤压加工,所述无缝钢管的第一端部进行冷挤压加工的次数是根据欲生产的绳头锥套的第一端部的外径设定对所述无缝钢管的第一端部进行冷挤压加工的次数。
优选地，每一次对所述无缝钢管的第一端部进行冷挤压加工是通过二个模具对所述无缝钢管进行冷挤压加工。
优选地，对所述无缝钢管的第二端部进行冷挤压加工包括对所述无缝钢管的第二端部进行至少一次的冷挤压加工,所述无缝钢管的第二端部进行冷挤压加工的次数是根据欲生产的绳头锥套的第二端部的外径设定对所述无缝钢管的第二端部进行冷挤压加工的次数。
优选地，每一次对所述无缝钢管的第二端部进行冷挤压加工是通过二个模具对所述无缝钢管进行冷挤压加工。
优选地，每一次对所述无缝钢管的第二端部进行冷挤压加工是通过油压机或曲柄压力机对所述无缝钢管进行冷挤压加工,所述油压机或曲柄压力机的吨数是根据所述无缝钢管的第二端部形成所述绳头锥套的第二端部所需的挤压力选择。
与现有技术相比，本申请可以获得包括以下技术效果：
本申请的制造方法较以铸造工序制造绳头锥套的制造方法的工序步骤少, 大幅提升生产效率,同时降低生产成本。
附图说明
图1为本申请实施方式的绳头锥套的示意图。
图2为本申请实施方式的绳头锥套的生产工艺的流程图。
图3为本申请实施方式的完成步骤S11的无缝钢管的示意图。
图4为本申请实施方式的完成步骤S12的无缝钢管的示意图。
图5为本申请实施方式的完成步骤S13的无缝钢管的示意图。
图6为本申请实施方式的完成步骤S15的无缝钢管的示意图。
具体实施方式
以下将以图式揭露本申请的多个实施方式，为明确说明起见，许多实务上的细节将在以下叙述中一并说明。然而，应了解到，这些实务上的细节不应用以限制本申请。也就是说，在本申请的部分实施方式中，这些实务上的细节是非必要的。此外，为简化图式起见，一些习知惯用的结构与组件在图式中将以简单的示意的方式绘示之。
关于本文中所使用之“第一”、“第二”等，并非特别指称次序或顺位的意思，亦非用以限定本申请，其仅仅是为了区别以相同技术用语描述的组件或操作而已。
请参阅图1，其是本申请实施方式的绳头锥套1的示意图；如图所示，本申请提供一种绳头锥套的生产工艺，其用于制造如图1所示的绳头锥套，绳头锥套1具有圆弧顶面10及底面13，并具有第一端部14及第二端部15，第一端部14的一端具有螺丝孔141，位于第一端部14的底面13具有垂直开口131，第一端部14的径向具有两个穿孔，两个穿孔相对，第二端部15的轴向一端具有开口，底面13上具有斜面132，在顶面10上具有过渡斜面101。
请参阅图2，其是本申请绳头锥套的生产工艺的流程图，本申请的绳头锥 套使用无缝钢管通过模锻工艺生产，其主要生产工艺包括：S10、下料；S11、对无缝钢管的第一端部进行第一次冷挤压加工，S12、对无缝钢管的第一端部进行第二次冷挤压加工，并形成过渡斜面，S13、对无缝钢管的第二端部冷挤压加工，S14、压扁经冷却挤压加工后的无缝钢管，S15.垂直切除经压扁的所述无缝钢管的第一端部的第一斜椎体径向截面为斜边的一侧,并形成垂直开口，S16.对无缝钢管的第一端部进行切边和打孔攻丝。具体地：
先执行步骤S10，下料，取得无缝钢管,无缝钢管的尺寸根据欲生产的绳头锥套的尺寸而设定,其中无缝钢管具有第一端部及第二端部，第一端部的一端具有第一开口，第二端部的相对第一端部的一端具有第二开口。
参阅图3，在步骤S11中，对所述无缝钢管2的第一端部21进行第一次冷挤压加工，通过两个模具对无缝钢管2进行第一次冷挤压加工,使无缝钢管2的第一端部21具有第一中空柱体211及第一斜锥体212，第一中空柱体211的一端具有第一开口213，其另一端连接第一斜锥体212，第一斜锥体212的截面具有斜边214及直角边215；第二端部22为第二中空柱体221，第二中空柱体221的一端连接第一端部21的第一斜锥体212，其另一端具有第二开口222。
参阅图4,执行步骤S12,对所述无缝钢管2的第一端部21进行第二次冷挤压加工,通过两个模具对完成步骤S11的无缝钢管2进行第二次冷挤压加工,使无缝钢管2的第一端部21的第一开口213的外径缩小,其第一开口213向第二端部22延伸的深度也缩小，也表示第一中空柱体211的长度缩短,第一斜锥体212的水平长度拉长。
上述步骤S11及S12的两次冷挤压加工主要对无缝钢管2的第一端部21进行冷挤压加工，缩小第一开口213的外径符合绳头锥管1的第一端部14的螺丝孔141的外径。本申请的无缝钢管2的第一端部21相当于上述加工成型的绳头锥套的第一端部14，本实施例中必须对无缝钢管2的第一端部21进行至少一次冷挤压加工,而冷挤压加工的次数取决于绳头锥套1的第一端部14的 螺丝孔141的外径与原本未加工的无缝钢管2的外径的比值和无缝钢管2材料的极限缩口系数。
在S12之后对所述第一斜椎体进行冷挤压加工，在所述第一斜椎体径向截面中直角边的一侧与第二端部形成过渡斜面。
举例说明,本申请的绳头锥套1的第一端部14外径为28mm,加工前的无缝钢管2的外径为45mm,无缝钢管2的极限缩口系数介于0.7与0.75间,由上述数值计算出绳头锥套1的第一端部14外径与原本未加工的无缝钢管2的外径的比值为0.62,其小于极限缩口系数,所以无法一次性地将无缝钢管2的第一端部21的外径从45mm缩小至28mm。因此本申请对无缝钢管2的第一端部21使用两次冷挤压加工,慢慢缩小无缝钢管2的第一端部21的第一开口213的外径,第一次冷挤压加工先将无缝钢管2的第一端部21的外径缩小至33.75mm,经第一次冷挤压加工的无缝钢管2的第一端部21的第一开口213的外径与加工前的无缝钢管2的第一端部21的第一开口213的外径的比值为0.75,刚好符合极限缩口系数的上限，所以可以一次性地将无缝钢管2的第一开口213的外径从45mm缩小至33.75mm。经第二次冷挤压加工将经第一次冷挤压加工的无缝钢管2的第一端部21的外径缩小至25.3mm,经第二次冷挤压加工的无缝钢管2的第一开口213的外径与经第一次冷挤压加工无缝钢管2的第一开口213的外径的比值为0.75,刚好符合极限缩口系数的上限，所以可以一次性地将无缝钢管2的第一开口213的外径从33.75mm缩小至25.3mm。本申请对无缝钢管2的第一端部21的冷挤压加工为优选的实施方式,其使用最少冷挤压加工次数,可减少加工过程所产生的成本,提升加工效率。当然冷挤压加工的次数可以增加,于此不再赘述。
参阅图5,执行步骤S13,对无缝钢管2的第二端部22进行次冷挤压加工,通过两个模具对完成步骤S12的无缝钢管2进行冷挤压加工,无缝钢管2的第二端部22由第二中空柱体221形成第二斜锥体,所述第二斜锥体的径向截面为直角梯形，所述直角梯形的直角边与所述第一斜锥体通过过渡斜面相连,使第 二端部22的第二开口222的外径符合绳头锥套的第二端部15的开口151的外径,无缝钢管2的第二端部22仅要经过一次冷挤压加工即可符合绳头锥套的第二端部15,其因绳头锥套的第二端部15的开口151的外径与经第二次冷挤压加工的无缝钢管2的第二开口222的外径的比值是0.73,大于无缝钢管2的极限缩口系数的下限，所以可以一次性地将无缝钢管2的第二开口222的外径从45mm缩小至33mm。
在上述步骤S13是使用油压机进行冷挤压加工,油压机的吨数是根据无缝钢管2的第二端部22形成绳头锥套的第二端部15所需的挤压力选择，挤压力可通过挤压力计算公式计算出来,其计算公式是
Figure PCTCN2016106355-appb-000001
单位：N
其中P挤是挤压部分的挤压力；K是与选用设备有关的系数；F是与挤压力互相垂直的锻件投影面积，
Figure PCTCN2016106355-appb-000002
σb是金属在挤压模锻温度时的强度权限；D是无缝钢管2的原始外径；d是绳头锥套1的第二端部15的开口的外径。
本申请使用油压机,所以K系数为10,F是1590mm2,D是45mm,d是35.48mm,σb是245MPa,将上述数值带入计算公式中,求得P挤是2665690N,所以本申请使用315吨的油压机进行冷挤压加工。当然可将油压机换成曲柄压力机,其中曲柄压力机的行程次数小于每秒30次与40次间,K系数为12.5；曲柄压力机的行程次数大于每秒30次与40次间,K系数为15。
待上述步骤完成后，执行步骤S14,压扁，通过两个模具对无缝钢管2进行压扁加工，二个模具分别位于无缝钢管2的左右两侧，并挤压无缝钢管2,使无缝钢管2为扁平状。
接著执行步骤S15，垂直切除无缝钢管2的第一端部21的第一斜面261，并于第一端部21上形成垂直开口，如图1所示。
最后执行步骤S16，对无缝钢管2的第一端部21的第一开口213进行打 孔攻丝,第一端部14的径向具有两个穿孔，两个穿孔相对。
上述制造方法为本申请优选的一实施方式，本申请的制造方法可根据欲生产的绳头锥套的尺寸进行调整，尤其是对无缝钢管的第一端部及第二端部的冷挤压加工的次数可进行调整。
综上所述，本申请的一或多个实施方式中，本申请的绳头锥套是使用无缝钢管并通过冷挤压加工生产，有别以往使用铸造加工，本申请的生产工艺的工序较铸造加工的工序少，可提升生产效率，节约原材料，节省生产成本。
上所述仅为本申请的实施方式而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理的内所作的任何修改、等同替换、改进等，均应包括在本申请的权利要求范围之内。

Claims (6)

  1. 一种新型绳头锥套的制造方法，其特征在于，包括：
    S1.下料,取得无缝钢管,所述无缝钢管的长度及外径根据欲生产的绳头锥套的尺寸设定，所述无缝钢管具有第一端部及第二端部；
    S2.对所述无缝钢管的第一端部进行冷挤压加工,使所述无缝钢管的第一端部的外径符合欲生产的绳头锥套的第一端部的外径，所述无缝钢管的第一端部具有第一斜锥体，所述第一斜椎体径向截面形成第一直角梯形；对所述第一斜椎体进行冷挤压加工，在所述第一斜椎体径向截面中直角边的一侧与第二端部形成过渡斜面；
    S3.对所述无缝钢管的第二端部进行冷挤压加工,使所述无缝钢管的第二端部的外径符合欲生产的绳头锥套的第二端部的外径尺寸，所述无缝钢管的第二端部具有第二斜锥体，所述第二斜椎体径向截面形成第二直角梯形，所述第二斜椎体径向截面中直角边的一侧通过所述过渡斜面与所述第一斜椎体相连；
    S4.压扁所述无缝钢管,形成扁平状的无缝钢管；
    S5.垂直切除所述第一斜锥体径向截面为斜边的一侧并在所述无缝钢管形成垂直开口；
    S6.在所述无缝钢管的第一端部进行轴向打孔攻丝，并在所述第一端部径向形成两个相对的穿孔。
  2. 根据权利要求1所述的一种新型绳头锥套的制造方法，其特征在于，对所述无缝钢管的第一端部进行冷挤压加工包括对所述无缝钢管的第一端部进行至少一次的冷挤压加工,所述无缝钢管的第一端部进行冷挤压加工的次数是根据欲生产的绳头锥套的第一端部的外径设定对所述无缝钢管的第一端部进行冷挤压加工的次数。
  3. 根据权利要求2所述的一种新型绳头锥套的制造方法，其特征在于，每一次对所述无缝钢管的第一端部进行冷挤压加工是通过二个模具对所述无缝钢管进行冷挤压加工。
  4. 根据权利要求1所述的一种新型绳头锥套的制造方法，其特征在于，对所述无缝钢管的第二端部进行冷挤压加工包括对所述无缝钢管的第二端部进行至少一次的冷挤压加工,所述无缝钢管的第二端部进行冷挤压加工的次数是根据欲生产的绳头锥套的第二端部的外径设定对所述无缝钢管的第二端部进行冷挤压加工的次数。
  5. 根据权利要求4所述的一种新型绳头锥套的制造方法，其特征在于，每一次对所述无缝钢管的第二端部进行冷挤压加工是通过二个模具对所述无缝钢管进行冷挤压加工。
  6. 根据权利要求1所述的一种新型绳头锥套的制造方法，其特征在于，每一次对所述无缝钢管的第二端部进行冷挤压加工是通过油压机或曲柄压力机对所述无缝钢管进行冷挤压加工,所述油压机或曲柄压力机的吨数是根据所述无缝钢管的第二端部形成所述绳头锥套的第二端部所需的挤压力选择。
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