Optical fiber cutter base with replaceable linear blade cutting surface and optical fiber cutter comprising same
阅读说明：本技术 一种可更换直线刀片切割面的光纤切割刀底座以及包含该底座的光纤切割刀 (Optical fiber cutter base with replaceable linear blade cutting surface and optical fiber cutter comprising same ) 是由 李亮 于 2019-03-25 设计创作，主要内容包括：本发明提供一种可更换直线刀片切割面的光纤切割刀底座以及包含该底座的光纤切割刀,底座包括：刀架组件和底座组件；刀架组件使用刃口为直线的刀片,与底座组件配合可实现更换切割刀面；完整光纤切割刀包括底座组件、刀架组件和压切组件,可方便快速夹持、固定、切割光纤；本发明和已有设计相比,底座除支持合金直线刃口刀片以外还支持硬度更高的人工单晶宝石刀片,并解决了在压切方式切割光纤过程中直线刀片不能更换切割面的问题,大幅增加了直线刀片的使用寿命,提高了切割精度。(The invention provides an optical fiber cutter base capable of replacing a linear blade cutting surface and an optical fiber cutter comprising the base, wherein the base comprises: a tool holder assembly and a base assembly; the cutter rest component uses a blade with a linear cutting edge, and can realize the replacement of a cutting cutter face by matching with the base component; the complete optical fiber cutter comprises a base assembly, a cutter rest assembly and a press-cutting assembly, and can conveniently and rapidly clamp, fix and cut the optical fiber; compared with the existing design, the base supports the artificial single crystal gem blade with higher hardness besides the alloy linear cutting edge blade, solves the problem that the linear blade cannot replace a cutting surface in the process of cutting the optical fiber in a press cutting mode, greatly prolongs the service life of the linear blade and improves the cutting precision.)
1. An optical fiber cutter base capable of replacing a linear blade cutting surface and an optical fiber cutter comprising the base are characterized in that the base is provided with a groove;
the optical fiber cutting knife base of removable sharp blade cutting face and the optical fiber cutting knife that contains this base possess:
a tool holder assembly and a base assembly;
the tool holder assembly comprises: the cutter frame comprises a cutter frame base, a component adjusting spring, a component adjusting screw, a linear blade, a cutter frame shaft, a cutter frame height adjusting spring and a cutter frame height adjusting screw;
the tool rest base is provided with a cavity for placing a tool rest, two ends of the cavity are respectively provided with a group of tool rest shaft placing grooves, the bottom of the cavity is provided with a hole for mounting a tool rest height adjusting screw, and the tool rest height adjusting screw is mounted in the hole;
the component adjusting spring and the component adjusting screw are arranged on the base assembly, the tool rest base is abutted under the action of the adjusting spring force, the axis of the component adjusting screw and the axis of the component adjusting spring are perpendicular to the cut optical fiber, and the position of the tool rest component is moved in the direction perpendicular to the axis of the optical fiber by adjusting the component adjusting screw;
the linear blade is arranged on the tool rest, a shaft hole is formed in the position, perpendicular to the side face of the linear blade, of the tool rest, the tool rest shaft penetrates through the shaft hole and is placed in a group of tool rest shaft placing grooves in a cavity of a tool rest base, the tool rest can do circular motion in the direction perpendicular to the axis of the optical fiber by taking the tool rest shaft as the center of a circle, one end of the height adjusting spring is arranged below the tool rest and supports the tool rest in the vertical direction, the other end of the height adjusting spring is in contact with a tool rest height adjusting screw arranged on the tool rest base, and the blade height adjusting screw is adjusted, namely the distance between the tool rest and the cut optical;
the base assembly includes: the base assembly, the pressing plate and the pressing foot pad are arranged on the base;
the base assembly is provided with a cavity for placing the tool rest component and a shaft hole for connecting the press-cutting component;
the pressing plate is arranged in the cavity of the base assembly and used for fixing the cutter frame assembly downwards;
the outer edge of the pressure plate is correspondingly matched with the inner edge of the cavity of the base assembly;
the downward pressing foot pads are arranged at the optical fiber placing positions on the surface of the base assembly and positioned on two sides of the tool rest component.
2. The optical fiber cutter base of claim 1 and the optical fiber cutter comprising the base;
the optical fiber cutter base with the replaceable linear blade cutting surface and the optical fiber cutter comprising the base further comprise a pressing and cutting component, wherein the pressing and cutting component is installed on the base assembly through a shaft hole of the base assembly and can rotate around the shaft hole in the direction of the base assembly, and the optical fiber surface to be cut is pressed and extruded to the cutting edge of the linear blade in the rotating process.
Technical Field
The invention relates to the field of optical fiber cutters for engineering, in particular to an optical fiber cutting device which vertically scratches the surface of the excircle of an optical fiber and then squeezes the optical fiber apart or breaks the optical fiber along a scratch notch to form an optical fiber end face meeting engineering standards.
Technical Field
Optical fibers have been widely used in the fields of communication, medical treatment, sensors, navigation, and the like, and the main material for manufacturing the optical fibers is high-purity quartz, so that a special method is required for connection between the optical fibers; at present, two methods are mainly adopted in the engineering field: one is physical connection, namely, the optical fibers to be connected are accurately aligned and fixed, which is called cold connection; the other method is that a group of precisely aligned optical fibers are further heated at high temperature to reach the melting point of the optical fibers so that the two optical fibers are fused, which is called fusion splicing; the radial cross section of the optical fiber must be planarized before cold-splicing and fusion splicing, and light can be effectively transmitted only if the radial cross sections of the optical fibers can be attached to each other as much as possible during alignment. In communication optical fiber engineering field, this kind of terminal surface processing tool of optic fibre is the optical fiber cutting knife, and its principle is: the outer circle of the optical fiber is scratched by using the blade edge of the blade, so that a notch perpendicular to the axis of the optical fiber is formed, and then external force is applied to expand along the notch direction until the optical fiber is broken.
The method for forming the notch by the guide rail type optical fiber cutter generally comprises the steps of utilizing a blade arranged on a precise linear guide rail, scratching the optical fiber with relatively fixed height in the moving direction by pushing the guide rail to perform precise linear motion to form the notch, and then knocking the scratch notch from top to bottom to expand the notch of the optical fiber until the notch is broken.
The apparatus for cutting optical fiber by press cutting has been used in the nineties of the last century, typically the fiber cutter of type A8 by siemens which uses diamond as the cutting material, and has the following disadvantages:
1. the diamond material of the blade is expensive and is not easy to process, the cutting edge area is narrow (the cutting edge is about 1 mm long), the cutting edge is always used at the same point, the whole service life of the blade component is short (the service life of one point is 2 to 3 ten thousand times), and the efficiency is not high.
2. The blade and the bracket thereof are directly fixed on the base of the cutting knife, the position of the blade relative to the optical fiber can not be adjusted, the cutting edge surface contacted with the optical fiber is changed, and the actual service life, namely the efficiency of the blade is also reduced.
3. The knife rest supporting spring is fixed on the base, the height of the blade can not be adjusted through the spring, and certain influence is also exerted on the cutting quality.
The inventor submits application of a press-cutting type optical fiber cutter using a circular blade in 2018 in 12 months respectively, and the application numbers are as follows: 2018116169997 and 2018222234185, the technology details the working principle and process of the pinch-cut fiber cleaver, but in practice, the design has the following disadvantages:
1. although the circular blade made of the tungsten alloy material is suitable for machining the cutting edge of the circular arc-shaped blade, the hardness of the circular blade is lower than that of an artificial single crystal, and the cost of the circular optical fiber cutter blade with the combination of sharpness and hardness is higher, so that the cutting effect of the blade with the same quality in a press-cutting type cutting mode is lower than that of a guide rail type cutter.
2. While a circular insert is easy to change faces, its larger diameter (typically 20 mm) results in a larger and thicker base to accommodate the insert, increasing overall thickness and weight.
Disclosure of Invention
In view of the above problems, the present invention provides a base of an optical fiber cutter capable of replacing a cutting surface of a linear blade, and an optical fiber cutter comprising the base, comprising a tool holder assembly, a base assembly, and a press-cutting assembly; the knife rest component is made of a linear blade which is usually made of an artificial single crystal material with hardness higher than that of metal alloy, the artificial corundum single crystal (sapphire and ruby) has hardness second to that of diamond, melting temperature of 2050 and good mechanical property, chemical stability and optical property, and a very excellent cutting edge can be manufactured through a special professional processing technology, and can not generate flexural deformation when the thickness of the cutting edge is lower than 0.10 mm, and the cutting edge is very smooth and has good durability; the blade can also be made of alloy materials according to requirements.
The linear blade (usually between 3 and 8 mm) of longer blade edge is installed on the knife rest, the knife rest is placed on the knife rest base through the axle on the knife rest, there is spring support of knife rest between base and knife rest, the knife rest can do the circular arc movement around the knife rest axle under the spring support of knife rest relative to base; the cutter frame and the cutter frame seat form a cutter frame component which is integrally arranged in the base assembly, and the cutter frame component is enabled to move in the direction vertical to the axis of the cut optical fiber under the condition of adjusting the relevant connecting structural component, so that the purpose of adjusting the cutting edge is achieved.
The invention emphasizes the movability of the tool rest component bearing the linear blade in the cavity of the base assembly and the press-cutting type optical fiber cutter base comprising the structure on one hand, and emphasizes the lengthening of the cutting edge of the blade per se from about 1 mm to 3-8 mm of the original design on the other hand.
Technical scheme
To solve the above problems, the present invention provides the following structure;
an optical fiber cutter base capable of replacing a linear blade cutting surface and an optical fiber cutter comprising the base are characterized in that the base is provided with a groove;
the optical fiber cutting knife base of removable sharp blade cutting face and the optical fiber cutting knife that contains this base possess:
a tool holder assembly and a base assembly;
the tool holder assembly comprises: the cutter frame comprises a cutter frame base, a component adjusting spring, a component adjusting screw, a linear blade, a cutter frame shaft, a cutter frame height adjusting spring and a cutter frame height adjusting screw;
the tool rest base is provided with a cavity for placing a tool rest, two ends of the cavity are respectively provided with a group of tool rest shaft placing grooves, the bottom of the cavity is provided with a hole for mounting a tool rest height adjusting screw, and the tool rest height adjusting screw is mounted in the hole;
the component adjusting spring and the component adjusting screw are arranged on the base assembly, the tool rest base is abutted under the action of the adjusting spring force, the axis of the component adjusting screw and the axis of the component adjusting spring are perpendicular to the cut optical fiber, and the position of the tool rest component is moved in the direction perpendicular to the axis of the optical fiber by adjusting the component adjusting screw;
the linear blade is arranged on the tool rest, a shaft hole is formed in the position, perpendicular to the side face of the linear blade, of the tool rest, the tool rest shaft penetrates through the shaft hole and is placed in a group of tool rest shaft placing grooves in a cavity of a tool rest base, the tool rest can do circular motion in the direction perpendicular to the axis of the optical fiber by taking the tool rest shaft as the center of a circle, one end of the height adjusting spring is arranged below the tool rest and supports the tool rest in the vertical direction, the other end of the height adjusting spring is in contact with a tool rest height adjusting screw arranged on the tool rest base, and the blade height adjusting screw is adjusted, namely the distance between the tool rest and the cut optical;
the base assembly includes: the base assembly, the pressing plate and the pressing foot pad are arranged on the base;
the base assembly is provided with a cavity for placing the tool rest component and a shaft hole for connecting the press-cutting component;
the pressing plate is arranged in the cavity of the base assembly and used for fixing the cutter frame assembly downwards;
the outer edge of the pressure plate is correspondingly matched with the inner edge of the cavity of the base assembly;
the downward pressing foot pads are arranged at the optical fiber placing positions on the surface of the base assembly and positioned on two sides of the tool rest component.
The optical fiber cutter base with the replaceable linear blade cutting surface and the optical fiber cutter comprising the base further comprise a pressing and cutting component, wherein the pressing and cutting component is installed on the base assembly through a shaft hole of the base assembly and can rotate around the shaft hole in the direction of the base assembly, and the optical fiber surface to be cut is pressed and extruded to the cutting edge of the linear blade in the rotating process.
The present invention has the following advantageous effects
1. The overall service life of the cutting knife is prolonged; due to the lengthening (3 to 8 mm) of the blade edge and the realization of the adjustability of the position of the blade assembly, the blade surface of the linear blade is ensured to be replaced in the press-cutting type optical fiber cutting application; the actual measurement can be carried out to replace 10 to 12 knife faces in the using process, namely, the original service life is prolonged by 10 to 12 times, according to the existing data, the cutting tool can cut 15 ten thousand to 30 ten thousand times under the condition, the cutting life is far higher than that of 1 to 2 ten thousand times of the existing cutting knife, and the cost of the artificial single crystal blade is not higher than that of the existing tungsten alloy blade.
2. The cutting quality and consistency of the press-cutting type optical fiber cutter are improved; the main reason is that when the artificial single crystal is used as the blade material, the hardness of the artificial single crystal is greater than that of a metal alloy material, the included angle of the cutting edge can be smaller, the cutting edge is sharper, and therefore the cutting effect is better.
3. The volume and the weight of the original design are reduced; because the linear blade is smaller in volume and lighter in weight, the size and the weight of the base are reduced, and the linear blade is easier to operate and carry.
Drawings
The embodiments of the present invention will be further explained with reference to the drawings;
FIG. 1 is a front view of a fiber cleaver base with replaceable linear blade cutting surfaces and a fiber cleaver incorporating the base.
FIG. 2 is a view of the initial position of the carriage assembly within the base assembly (hidden 1. press-cut assembly and 32. press plate).
FIG. 3 is an end-on-regulation position view of the carriage assembly within the base assembly (hidden 1. pinch-cut assembly and 32. platen).
FIG. 4 is a schematic view of the arrangement of the blade carrier assembly in the position of the blade carrier placement groove.
FIG. 5 is a schematic view of the position of the carriage assembly carriage in the carriage lower slot.
FIG. 6 is a schematic view of a platen mount assembly.
Description of the reference numerals
The optical fiber cutter base of removable sharp blade cutting face and the optical fiber cutter subassembly mark that contains this base: 1. the press cutting assembly comprises a press cutting assembly, a tool rest assembly and a base assembly.
Tool holder assembly part and feature point labeling: 21. the tool rest comprises a component adjusting pressure spring, 22, a tool rest base, 221, a tool rest lower placing groove, 222, a tool rest upper placing groove, 23, a tool rest height adjusting screw, 24, a tool rest, 241, a tool rest shaft, 242, a linear blade, 243, a tool rest height adjusting spring and 25, a component adjusting screw.
Part and feature point marking of the base assembly: 31. the
Parts to be marked on the periphery: 4. an optical fiber.
Detailed Description
FIG. 1 is a front view of a fiber cleaver base with replaceable linear blade cutting surfaces and a fiber cleaver incorporating the base; 1. the press cutting component is connected to the base component in a
FIG. 2 is a view of the initial position of the carriage assembly within the base assembly (hidden 1. press-cut assembly and 32. press plate); 2. the tool rest assembly is integrally arranged in a cavity machined by the 31. base assembly; 21. the component adjusting
FIG. 3 is an end-on-regulation position view of the carriage assembly within the base assembly (hidden 1. press-cut assembly and 32. press plate); 2. the blade carrier assembly is at 31. the adjustment end position of the base assembly is 25. the adjustment screw of the assembly is adjusted in the direction of the arrow shown in the figure to a state where the blade carrier assembly cannot be displaced any more, at this time 2. one end of the blade carrier assembly has been pressed against 31. one side of the cavity wall of the base assembly, 242. the linear blade edge and 4. the relative position of the optical fiber is significantly changed in the direction perpendicular to the axis of the optical fiber as compared to that shown in fig. 2.
FIG. 4 is a schematic view of the arrangement of the carriage assembly in a position in which the carriage is disposed in the slot; 242. the cutting edge of the linear blade is upwards arranged on a 24-degree tool rest, 241-degree tool rest shaft penetrates through the 24-degree tool rest and is perpendicular to 242-degree side face of the linear blade; 24. the cutter frame passes through 241. the cutter frame shaft is placed at 22. the cutter frame base is placed at 222. the cutter frame is placed in the groove, 243. the cutter frame height adjusting spring is positioned at 24. the lower part of the cutter frame is contacted with 23. the cutter blade height adjusting screw which is arranged at 22. the lower part of the cutter frame base; when the blade height adjusting screw is adjusted 23, the 243 cutter frame height adjusting spring is vertically lifted upwards, so that the purpose of adjusting the height of the 4 cutter frame is achieved; at this
FIG. 5 is a schematic view of the placement of the carriage assembly carriage in the carriage lower slot position; 24. the knife rest passes through 241. the knife rest shaft is placed in 22. 221. the knife rest is placed in the groove, and at the
FIG. 6 is a schematic view of a platen mount assembly; looking at fig. 2 and 3, two 32-pressing plates fix 2-tool rest component from top to bottom on 31-base assembly; 33. the lower pressing foot pad is arranged on 31, the surface of the base assembly, 4, the optical fiber passes through and is placed on 33, the lower pressing foot pad; 1. the press cutting component is pivotally connected to the 31-base assembly through 31-311-press cutting component mounting shaft holes on the base assembly to form a complete cutting knife.
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