CN110293195B - Processing method of high-precision U-shaped titanium nail - Google Patents
Processing method of high-precision U-shaped titanium nail Download PDFInfo
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- CN110293195B CN110293195B CN201810241275.2A CN201810241275A CN110293195B CN 110293195 B CN110293195 B CN 110293195B CN 201810241275 A CN201810241275 A CN 201810241275A CN 110293195 B CN110293195 B CN 110293195B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
- B21F45/16—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes
- B21F45/24—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of staples; of belt-fastening elements
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Abstract
The invention relates to a processing method of a high-precision U-shaped titanium nail, which is characterized in that a straightening mechanism is manufactured by a cork material; feeding the titanium wire into a straightening mechanism, controlling the rotating speed of the straightening line in the straightening mechanism to be 2800 and 3200 revolutions per minute, controlling the wire arranging speed to be 2-3.5 circles per minute, and controlling the wire winding speed of a wire winding mechanism to be 6-7 circles per minute to wind the wire; the titanium wire collected by the wire collecting mechanism is fed into the cutter die, the die core and the cutter are in a close-fitting state, after the forming mechanism presses down, the pressure spring and the pre-pressing block compress the titanium wire, then the two cutters on the two sides act on the titanium wire on the two sides of the cutter die simultaneously, and the titanium wire is bent to form the titanium nail with a U-shaped structure. Compared with the prior art, the one-step punching forming process greatly simplifies the working procedures and improves the production efficiency; the unique processing mode greatly improves the quality, the performance and the processing flexibility of the product.
Description
Technical Field
The invention relates to the field of machining and manufacturing, in particular to a method for machining a high-precision U-shaped titanium nail.
Background
A medical titanium nail is a disposable consumable product, is applied to a medical anastomat, and medically replaces a traditional manual suture product. The product material is titanium, and the main structure is a U-shaped structure.
When the existing U-shaped titanium nail product is produced and processed, a spring winding mode is used, four sides are formed firstly, and then a mechanical edge grinding process is used for forming a U shape and a screw foot of the titanium nail. However, the existing processing technology has the following disadvantages: 1. the two-step forming process has complex working procedures. 2. The material loss is high, exceeding 25%. 3. This shaping mode can't guarantee the straightness accuracy of titanium silk body and two silk feet, has certain gradient, can influence silk foot direction performance. 4. In the process of edging the angle of the lead screw, the consistency of the angle cannot be accurately ensured, the defects of long and short angles, sharp angle difference and the like can occur, and the puncture performance is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for processing a high-precision U-shaped titanium nail by one-step punching.
The purpose of the invention can be realized by the following technical scheme:
a processing method of a high-precision U-shaped titanium nail comprises the following steps:
(1) the straightening mechanism is made of cork materials;
(2) feeding the titanium wire into a straightening mechanism, controlling the rotating speed of the straightening line in the straightening mechanism to be 2800 and 3200 revolutions per minute, controlling the wire arranging speed to be 2-3.5 circles per minute, controlling the wire collecting speed of the wire collecting mechanism to be 6-7 circles per minute, and collecting the wire, wherein the straightening line of the straightening mechanism is equally stressed by 8-10N;
(3) the titanium wire collected by the wire collecting mechanism is fed into the cutter die, the die core and the cutter are in a close-fitting state, after the forming mechanism presses down, the pressure spring and the prepressing block compress the titanium wire, then the two cutters on the two sides simultaneously act to cut the titanium wire on the two sides of the cutter die, the titanium wire is bent and formed, finally, the mechanisms return to the initial position, and the high-pressure gas on the inner side of the die base blows out the titanium nail.
The main body part of the manufacturing mechanism can be made of alloy tool steel, ball bearing steel, high-speed tool steel or high-carbon martensitic stainless steel. The key die can be rapidly customized and replaced, and customized processing solutions can be provided according to different specifications and demands of customer products.
The straightening mechanism comprises a straightening line and a bakelite rod, the straightening mechanism is arranged in straightening equipment, and the straightening equipment consists of a wire releasing mechanism, a straightening mechanism, a wire collecting mechanism and a wire arranging mechanism which are mutually linked.
The wire releasing mechanism is arranged at the front end of the alignment line, the wire arranging mechanism is arranged at the rear end of the wire collecting mechanism, the wire releasing mechanism is provided with a sliding module consisting of a rolling bearing, an adjusting nut and a braking device, the sliding module is matched with the wire collecting mechanism to work, and the wire releasing mechanism and the wire arranging mechanism can operate only after the wire collecting mechanism starts to work.
The titanium wire is sent into the straightening mechanism, the same stress of the straightening mechanism is controlled to be 8-10N, the same stress of the wire collecting mechanism and the wire arranging mechanism is larger than 15N, a continuous relatively static state is formed by the wire collecting mechanism and the wire arranging mechanism, and the straightening mechanism rotates continuously at a high speed to form the linear titanium wire.
The wire collecting mechanism is replaced every 1 hour.
The included angle between the mold core and the cutter is controlled to be 45-60 degrees.
The angle of the knife edge of the cutter is determined according to the angles of the titanium nail pins with different specifications and can be 40 degrees.
Compared with the prior art, the invention has the following advantages:
1) and the process is greatly simplified by using a one-step stamping forming mode. The production efficiency is greatly improved by a full-automatic production mode.
2) The material loss is less than < 5%.
3) The flexible straightening mechanism and the technical scheme designed aiming at special materials ensure that the wire has no damage on the surface while the straightness of the wire meets the requirement.
4) The unique forming process and the special punching cutter ensure the consistency of the sharp angle of the titanium nail and effectively control the puncture force.
5) The one-time punching process ensures the straightness of the titanium nail (no matter the screw body and the screw foot) to the maximum extent and greatly increases the guiding performance of the titanium nail.
6) The U-shaped titanium nail produced by the process has the advantages of good appearance quality, no scratch, crease and bruise, and smooth surface.
7) The U-shaped titanium nail produced by the process has high consistency of the angle of the sharp corner, the tangent plane of the sharp corner is vertical to the screw body, and the U-shaped titanium nail has high precision and high quality.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The invention relates to a forming process of a U-shaped titanium nail, which is manufactured by a one-step forming method. The manufacturing method of the present invention will be briefly described below by taking a 4.5mm titanium nail as an example.
The method comprises the following steps of using 0.022 titanium wires, feeding titanium wire coil materials into a straightening mechanism for straightening, feeding the titanium wire materials into a straightening mechanism, changing a wire coiling disc every 1 hour at a straightening row rotating speed of 2880 revolutions per minute and a wire coiling speed of 6.5 circles per minute and a wire coiling speed of 2.5 circles per minute, and enabling the straightening row to be equally stressed by 8.9N. It is to be noted that: the titanium wire material is soft, the wire diameter is thin, the pulling force must be controlled during wire feeding, the wire feeding row and the wire collecting row are matched to keep a certain state of balance, the rotation can be smooth, and the wire material cannot be broken in the pulling process due to uneven stress.
The straightened wires are sent into a forming mechanism, a mold core and a cutter of a cutter mold are in a close-fitting state, the sticking angle is 47 degrees, the cutter edge is 40 degrees, a forming displacement shaft moves, the cutters on two sides are lifted, when the wires enter a positioning mold, the titanium wires are compressed by using a pressure spring and a pre-pressing block, then the titanium wires on two sides of the cutter mold are cut off by the double cutter mechanisms on two sides simultaneously, the titanium nail is bent and formed, finally, all the mechanisms return to the initial position, and the titanium nails are blown out by high-pressure gas on the inner side of a mold base.
The mechanism body part material may be an alloy tool steel, a ball bearing steel, a high speed tool steel or a high carbon martensitic stainless steel. The key die can be rapidly customized and replaced, and customized processing solutions can be provided according to different specifications and demands of customer products.
Example 2
A processing method of a high-precision U-shaped titanium nail comprises the following steps:
(1) the straightening mechanism is made of cork materials;
(2) feeding the titanium wire into a straightening mechanism, controlling the rotating speed of a straightening row in the straightening mechanism to be 2800 r/min, controlling the wire arranging speed to be 2 circles per minute, controlling the wire collecting speed of a wire collecting mechanism to be 6 circles per minute, collecting the wire, and controlling the straightening row of the straightening mechanism to be equally stressed by 8N;
(3) the titanium wire collected by the wire collecting mechanism is fed into the cutter die, the die core and the cutter are in a close-fitting state, the included angle between the die core and the cutter is controlled to be 45 degrees, after the forming mechanism presses down, the pressure spring and the pre-pressing block compress the titanium wire, then the titanium wires on two sides of the cutter die are cut off by the aid of the double cutters on two sides simultaneously, the angle of the edge of the cutter is determined according to the angles of titanium nail pins of different specifications, and the control of the embodiment is 40 degrees. And (4) forming a titanium wire bend angle, finally returning each mechanism to the initial position, and blowing the titanium nails out by high-pressure gas on the inner side of the mold base.
The straightening mechanism comprises a straightening line and a bakelite rod, the straightening mechanism is arranged in straightening equipment, the straightening equipment consists of a wire releasing mechanism, a straightening mechanism, a wire collecting mechanism and a wire arranging mechanism which are mutually linked, and the main body part of the manufacturing mechanism can be made of alloy tool steel, ball bearing steel, high-speed tool steel or high-carbon martensitic stainless steel. The key die can be rapidly customized and replaced, and customized processing solutions can be provided according to different specifications and demands of customer products. The wire releasing mechanism is arranged at the front end of the alignment line, the wire arranging mechanism is arranged at the rear end of the wire collecting mechanism, the wire releasing mechanism is provided with a sliding module consisting of a rolling bearing, an adjusting nut and a braking device, the sliding module is matched with the wire collecting mechanism to work, and the wire releasing mechanism and the wire arranging mechanism can only operate after the wire collecting mechanism starts to work. The titanium wire is fed into the straightening mechanism, the same stress of the straightening mechanism is controlled to be 8N, the same stress of the wire collecting mechanism and the wire arranging mechanism is larger than 15N, the wire collecting mechanism and the wire arranging mechanism form a continuous relatively static state, and the straightening mechanism continuously rotates at a high speed to form the linear titanium wire. The filament collecting mechanism is replaced every 1 hour.
Example 3
A processing method of a high-precision U-shaped titanium nail comprises the following steps:
(1) the straightening mechanism is made of cork materials;
(2) feeding the titanium wire into a straightening mechanism, controlling the rotating speed of a straightening row in the straightening mechanism to be 3200 revolutions per minute, controlling the wire arrangement speed to be 3.5 circles per minute, controlling the wire winding speed of a wire winding mechanism to be 7 circles per minute, and winding the wire, wherein the straightening row of the straightening mechanism is equally stressed by 10N;
(3) the titanium wire collected by the wire collecting mechanism is fed into the cutter die, the die core and the cutter are in a close-fitting state, the included angle between the die core and the cutter is controlled to be 60 degrees, after the forming mechanism presses down, the pressure spring and the pre-pressing block compress the titanium wire, then the titanium wires on two sides of the cutter die are cut off by the aid of the double cutters on two sides simultaneously, the angle of the edge of the cutter is determined according to the angles of titanium nail pins of different specifications, and the control of the embodiment is 40 degrees. And (4) forming a titanium wire bend angle, finally returning each mechanism to the initial position, and blowing the titanium nails out by high-pressure gas on the inner side of the mold base.
The straightening mechanism comprises a straightening line and a bakelite rod, the straightening mechanism is arranged in straightening equipment, the straightening equipment consists of a wire releasing mechanism, a straightening mechanism, a wire collecting mechanism and a wire arranging mechanism which are mutually linked, and the main body part of the manufacturing mechanism can be made of alloy tool steel, ball bearing steel, high-speed tool steel or high-carbon martensitic stainless steel. The key die can be rapidly customized and replaced, and customized processing solutions can be provided according to different specifications and demands of customer products. The wire releasing mechanism is arranged at the front end of the alignment line, the wire arranging mechanism is arranged at the rear end of the wire collecting mechanism, the wire releasing mechanism is provided with a sliding module consisting of a rolling bearing, an adjusting nut and a braking device, the sliding module is matched with the wire collecting mechanism to work, and the wire releasing mechanism and the wire arranging mechanism can only operate after the wire collecting mechanism starts to work. The titanium wire is fed into the straightening mechanism, the same stress of the straightening mechanism is controlled to be 10N, the same stress of the wire collecting mechanism and the wire arranging mechanism is larger than 15N, the wire collecting mechanism and the wire arranging mechanism form a continuous relatively static state, and the straightening mechanism continuously rotates at a high speed to form the linear titanium wire. The filament collecting mechanism is replaced every 1 hour.
The angle tolerance of the nail angle of the formed U-shaped titanium nail is controlled to be +/-3 degrees, the angle tolerance of the bent angle is controlled to be +/-1.5 degrees, and the length tolerance of the formed size is controlled to be +/-0.08 mm. The consumption rate of the batch titanium nail material is 4.2 percent.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (2)
1. A processing method of a high-precision U-shaped titanium nail is characterized by comprising the following steps:
(1) the straightening mechanism is made of cork materials;
the straightening mechanism comprises a straightening line and a bakelite rod, and is arranged in straightening equipment which consists of a wire releasing mechanism, a straightening mechanism, a wire collecting mechanism and a wire arranging mechanism which are linked with each other;
the wire releasing mechanism is arranged at the front end of the alignment row, the wire arranging mechanism is arranged at the rear end of the wire collecting mechanism, the wire releasing mechanism is provided with a sliding module consisting of a rolling bearing, an adjusting nut and a braking device, and the sliding module is matched with the wire collecting mechanism to work; only after the wire collecting mechanism starts to work, the wire releasing mechanism and the wire arranging mechanism can operate;
(2) feeding the titanium wire into a straightening mechanism, controlling the rotating speed of the straightening line in the straightening mechanism to be 2800 plus 3200 revolutions per minute, controlling the wire arrangement speed to be 2-3.5 circles per minute, controlling the wire winding speed of a wire winding mechanism to be 6-7 circles per minute for winding the wire, controlling the same stress of the straightening mechanism to be 8-10N, and controlling the same stress of the wire winding mechanism and the wire arrangement mechanism to be more than 15N;
(3) the titanium wire collected by the wire collecting mechanism is fed into the cutter die, the die core and the cutter are in a close-fitting state, the included angle between the die core and the cutter is controlled to be 45-60 degrees, the knife edge angle of the cutter is 40 degrees, after the forming mechanism is pressed down, the pressure spring and the pre-pressing block compress the titanium wire, then the titanium wires on the two sides of the cutter die are cut off by the aid of the double cutters on the two sides simultaneously, and the titanium wire is bent to be formed to form the titanium nail with the U-shaped structure.
2. A processing method of a high-precision U-shaped titanium nail according to claim 1, wherein the wire retracting mechanism is replaced every 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241275.2A CN110293195B (en) | 2018-03-22 | 2018-03-22 | Processing method of high-precision U-shaped titanium nail |
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| CN201810241275.2A CN110293195B (en) | 2018-03-22 | 2018-03-22 | Processing method of high-precision U-shaped titanium nail |
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| CN110293195B true CN110293195B (en) | 2020-11-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202963334U (en) * | 2012-11-15 | 2013-06-05 | 天津瑞贝精密机械技术研发有限公司 | Titanium-screw former |
| CN203091634U (en) * | 2013-01-31 | 2013-07-31 | 北京哈德模具机械制造有限公司 | Titanium screw manufacturing machine |
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Address after: 201801 Shanghai city Jiading District Malu Town Jiaxin Road No. 1001 Patentee after: Shanghai Yaer Precision Parts Manufacturing Co.,Ltd. Address before: 201801 Shanghai city Jiading District Malu Town Jiaxin Road No. 1001 Patentee before: SHANGHAI Y&L LIGHTING Co.,Ltd. |
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