TWI240809B - Metal sleeves and manufacturing method thereof - Google Patents

Abstract

The manufacturing processes of metal sleeves includes steps of placing a core rod with a predetermined external diameter inside the inner space of a metal cylinder, melting a predetermined place of the metal cylinder by laser so as to instantaneously generate high heat at the predetermined place and make it become a semi-melting state, generating a great centripetal contraction force at the specified melting place when cooling the metal cylinder so as to contract the internal diameter of the metal cylinder to the external surface of the core rod for manufacturing a metal sleeve with specific inner diameter, and lastly pulling the core rod to finish these processes.

Description

1240809

[Technical field to which the invention belongs] Tubes and metal sleeves manufactured by laser melting technology The present invention relates to a method for the inner diameter of metal sleeves. [Previous technology] Generally speaking, between optical fibers, splicing is fixed in the receiving and transmitting module of the fiber and the headgear. The end of a metal sleeve socket is connected to the sleeve, and the headgear and the sleeve are lost. The need to meet is quite tight. The fiber optic communication and optical fiber and optical connectors are among the connectors. The completion of the work enables the optical communication 'sleeve socket to have a light source tube connection or subdivision and the dense error between the optical fiber and the joint. The system connection can be detected. Between components. Stone uses a headgear (a ferrule headgear is this kind of optical connection, the headgear can be used to pass the number. The current light is coaxially arranged with a piece or a light detection element away, so the size of the gap between the light source and the light detection element is determined , I am asking so that it changes the British-style optical fiber connection), and let the optical fiber use parts. The optical sleeve is connected to the optical transceiver module and has a sleeve and a sleeve; while the coupling loss between the headpiece and the shaft and the optical fiber is obvious, this must be in a certain range. The diameter of the sleeve is inserted into the sleeve with a diameter of 2.499 mm. The cores of the center of the fiber must be aligned with the light source element or light detection element correctly. In order to allow the headgear to be inserted and removed freely in the inner diameter of the sleeve and positioned at the optimal fixed-point alignment position, the inner diameter of the sleeve is approximately 2.5 mm. Currently used sleeves are made of ceramics. For the manufacture of ceramic sleeves, powdered ceramic materials are first formed into a cylindrical shape by injection molding and sintering. After firing, in order to improve the accuracy of the inner and outer diameter, precision machining.

DACHERNN two-dimensional 礴 \ pa93〇〇l 1. ptd page 4 1240809 V. Description of the invention (2) The precision machining of the inner diameter is to insert the rod-shaped diamond grinding body into the hole in the central part of the cylinder and grind it. This grinding operation requires a high-precision machining machine. In order to improve the accuracy of the outer diameter, a surface grinding process is required. After this processing, the inner diameter of the sleeve is still unavoidable, and after the actual process is completed, it is necessary to check and select the good products one by one to use. In addition, the lubricating oil used during processing, and the suspended particles such as ceramic dust and chips will float in the air, which is unfavorable to environmental protection requirements. In order to improve the dimensional accuracy of the central hole of the sleeve, it needs to be ground with a rod-shaped diamond grinding body, and the grinding processing operation needs to be processed by an expensive high-precision internal hole grinding machine, and expensive consumables using diamond series, so it has low productivity and high cost. Disadvantages. In addition, the tolerance for the inner diameter of optical fiber sleeves must be within 1 # m. Generally, the stability of the size of the inner diameter grinding process is limited to 3 # m. So sleeve

& The production port needs to be screened with a precision 1 test instrument for a long time, so there is a certain degree of defective rate. X [Summary of the Invention] The present invention has been made in view of the above-mentioned problems in the manufacture of sleeves, so as to provide high-quality equipment that does not require high cost, and simple and inexpensive equipment, good dimensional stability, easy production management, and good processability and productivity. High, that is, the purpose of maintaining the inner diameter tolerance of the sleeve within 1 metal sleeve and its manufacturing method. According to the metal sleeve control method of the present invention, a laser cylinder is applied to a metal cylinder to make the melting part generate a transient high temperature and become a semi-melted state. When condensing, a strong inward contraction force is generated, and the inner diameter is contracted to the Rod outer diameter table, to make a metal sleeve with a specified inner diameter, and the inner diameter tolerance is maintained at 丨 \ out

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1240809 Fifth 'invention note (3)' can eliminate inspection and screening.袖 σ ΪΪThe sleeve tube manufactured by the sintering method can provide small-diameter products as one of its features, in addition to providing products with an inner diameter of about 2.5_. Hazel's ί hair: the core rod material used by Yueqi mother type is generally Tao Jing. And the core is based on the diameter of the headgear 2.499_, and use about 2 ^.充 The size necessary to ensure the introduction of the headgear. [Embodiment] Ben Maoming's metal sleeve is suitable for laser

= 4, S_6 and other metals, laser car = = = J ί9 hollow circle / Λ, its inner diameter is 2.505mm, and its outer diameter is umm, =; 7 fixed furnace: two, the surface of the outer cymbal is processed at least 4 one Designate the melting and melting site. The depth of the melting site that can shrink to a predetermined diameter when condensing is about 1/2 of the wall thickness of the sleeve, and is a thousand-face surface or a straight groove or an annular groove. Prepare a circular cross-section with a diameter of 2.499 μm and a county sound of 9 η — apply laser melting on the burned part, and fire continuously at a speed of ^^^^ to melt it for seconds! In order to obtain a co-injection type, implement fast lightning The melting energy of the shooting gun can make the designated ^ ㈣ sleeve official, because the metal is melted, and the second T-burning part is subjected to instantaneous high temperature, so that 3 + valley-shaped grudges during the condensation period at the specified melting position 5 Internal contraction force, and contraction will stop after the inner diameter shrinks to a large core j. Finally, the Tao study core sleeve "= Tao J mandrel can be reused and used as = sleeve: Chengguan's internal service is 2.5 ° 0 mm, the tolerance is within 1㈣. In the same piece of clothing into the lower sleeve D: \ CHERN \ QR code \ Pa930011. Ptd Page 6 1240809 V. Description of the invention (4) Put a ceramic core rod with a diameter of 1.249mra and 125mm into the inner diameter of the sleeve. 'The inner diameter will be 1. 25 0mm, 0. 1 26mm sleeve. Each product has inner warp tolerance within 1 "m. Changing the ceramic mandrel straight technique under the same conditions can obtain a sleeve product with an inner diameter of 丨 · 250min and 〇 · 126mm. Due to the present invention, not only the large inner diameter of 2 · 0—3 · Omm, but also the inner diameter tolerance of the small sleeve tube made within 1 "m. The inner diameter of the small metal sleeve tube can be 0.25. -1 25 [11111, which can be as small as 0.25-0.9mni. The laser test method used in the internal examination of the test can not only achieve the manufacture of precise inner diameter sleeves, but also 2 inner diameter tolerances can meet the requirements. Screening operation Erlai = The mainstream sleeve made of ceramics has an inner diameter of 3 // m as the limit of grinding processing stability. The present invention can manufacture inner diameters ^ and arrogant and private, ... Within the sleeve & mouth, so the quality of the finished product, almost grading and other inspection operations.

D: \ CHERN \ Two marginal iodine \ pa930011. Ptd page 7 1240809 Simple illustration of the diagram D ACHERNX 2D Ma \ Pa930011. Ptd page 8

Claims (1)

1240809 VI. Scope of patent application — 1. A metal sleeve control method includes: placing a core with a specified outer diameter in the inner diameter of a metal cylinder, and performing laser melting on a designated melting site of the outer diameter, Partially instantaneous high temperature produces a strong inward contraction force in a semi-melted state, and the inner diameter shrinks to a core made of a metal sleeve with a specified inner diameter. After the inner diameter tolerances are equal, the core rod is removed. 2. The metal grapefruit tube ceramic as described in the first patent application scope. 3. The burning depth of the metal sleeve as described in item 1 of the scope of patent application is approximately equal to 1/2 of the wall thickness of the sleeve. Four types of metal sleeves include: a core with a specified outer diameter is placed in the inner diameter of a metal cylinder, and laser melting is performed on a designated melting part of the outer diameter; The state of strong inward contraction force makes the inner diameter shrink to the core to make a metal sleeve with a specified inner diameter. After the inner diameter tolerances are equal, the core rod is removed. 5. The depth of the metal sleeve as described in item 4 of the Shenjing patent range is approximately equal to 1/2 of the wall thickness of the sleeve. 6. The metal sleeve according to item 5 of the scope of patent application has at least one smooth surface. 7. The metal sleeve as described in item 5 of Shenyan's patent scope has at least one groove. When the metal circle is condensed by the melted fingers, the outer diameter surface of the rod is produced, within 1 // m. The manufacturing method is the core rod, the core rod is the manufacturing method, it specifies the melting rod, and Let the melted fingers 'condense to produce a rod outer diameter surface within 1 // m, the most' its designated melting section 'its designated melting section' its designated melting section Page 9