Fixing clamp based on portable grinding machine

Abstract

The fixing clamp based on the portable grinding machine comprises a bottom plate, a plurality of downward pressing assemblies and a plurality of annular gaskets with different thicknesses, a plurality of limiting holes are formed in the bottom plate, the limiting holes penetrate from the upper surface of the bottom plate to the lower surface of the bottom plate, the upper end of each limiting hole is provided with the annular gasket with the corresponding thickness, and the lower end of each limiting hole is provided with the annular gasket with the corresponding thickness. The limiting hole and the through hole of the corresponding annular gasket are used for accommodating an optical fiber contact pin, and the upper end of the annular gasket is used for being attached to the lower end of a first limiting step of the optical fiber contact pin, so that the optical fiber contact pin is heightened by a corresponding height, and the optical fiber contact pin extends out of the lower end of the limiting hole by a preset length and is ground by a grinding machine; the plurality of pressing assemblies are arranged on the bottom plate, and the optical fiber pins are limited through the pressing assemblies; the grinding requirements of various types of optical fiber contact pins are met through the annular gaskets with different thicknesses, and various different grinding clamps do not need to be carried, so that the labor cost and the device cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber grinding equipment, in particular to a fixing fixture based on a portable grinding machine. Background Art

[0002] In the prior art, aviation connectors are widely used in the field of optical fiber connectors due to their advantages such as dust and water resistance, vibration resistance, easy maintenance and easy upgrade. However, due to the relatively harsh construction environments of most current sites, it is impossible to provide a good working site. In such working conditions, a portable grinding machine is generally used to grind optical fiber pins. There are many types of aviation connectors, which are divided into series such as YMF, YMX and J599. The specifications of the optical fiber pins in various connectors are also different, and the grinding lengths of the ceramic parts of the optical fiber pins are also different. When grinding the optical fiber pins, a specific fixing fixture is required to keep the position of the optical fiber pins stationary. However, due to the different grinding lengths required for different optical fiber pins, the existing fixtures can only be customized according to different types of optical fiber pins. When multiple types of optical fiber pins need to be ground simultaneously, multiple portable grinding machines customized for the corresponding models need to be carried correspondingly, which not only increases the labor cost but also increases the device cost.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this technical field. Summary of the Utility Model

[0004] The problem to be solved by the utility model is how to make the fixing fixture of the portable grinding machine able to meet the grinding requirements of multiple types of optical fiber pins at the same time.

[0005] In a first aspect, a fixing fixture based on a portable grinding machine is provided, including: a bottom plate 1, a plurality of downward pressing components 2 and a plurality of annular gaskets 3 with different thicknesses, wherein:

[0006] A plurality of limiting holes 11 are provided on the bottom plate 1, and the limiting holes 11 penetrate from the upper surface of the bottom plate 1 to the lower surface of the bottom plate 1. An annular gasket 3 with a corresponding thickness is provided at the upper end of each limiting hole 11, and the through hole of the annular gasket 3 communicates with the corresponding limiting hole 11; the limiting holes 11 and the through holes of the corresponding annular gaskets 3 are used to accommodate the optical fiber pins 4, and the upper end of the annular gasket 3 is used to fit with the lower end of the first limiting step 41 of the optical fiber pin 4, so as to raise the optical fiber pin 4 by a corresponding height, and further make the optical fiber pin 4 extend out from the lower end of the limiting hole 11 with a preset length and be used for grinding by the grinding machine;

[0007] The plurality of downward pressing components 2 are arranged on the bottom plate 1, and the downward pressing components 2 are used to press downward on the optical fiber pins 4 arranged in the corresponding limiting holes 11, so as to limit the optical fiber pins 4.

[0008] Preferably, the pressing-down component 2 includes a stretching sleeve 21 and a pressing-down steel sheet 22, where:

[0009] The stretching sleeve 21 is arranged on the bottom plate 1, the pressing-down steel sheet 22 is arranged on the stretching sleeve 21, the pressing-down steel sheet 22 is used to extend from the stretching sleeve 21 to above the corresponding limiting hole 11, and the lower surface of the pressing-down steel sheet 22 is used to press down the optical fiber pin 4 downward, so as to limit the optical fiber pin 4.

[0010] The pressing-down steel sheet 22 is used to receive an external force to change the distance between it and the bottom plate 1.

[0011] Preferably, the stretching sleeve 21 includes a sleeve 211, a screw 212 and a spring 213, where:

[0012] The screw 212 is arranged on the bottom plate 1, the lower end of the screw 212 is fixedly connected to the bottom plate 1, and the sleeve 211 is movably sleeved around the screw 212.

[0013] A second limiting step 2111 is arranged inside the sleeve 211, the upper end of the screw 212 is a nut, and the spring 213 is arranged between the upper end of the second limiting step 2111 and the lower end of the nut.

[0014] Preferably, the pressing-down steel sheet 22 includes a collar part 221 and a pressing-down part 222, where:

[0015] The collar part 221 is located at one end of the pressing-down steel sheet 22, and the pressing-down part 222 is located at the other end of the pressing-down steel sheet 22; the collar part 221 is movably sleeved around the sleeve 211 and is used to rotate the pressing-down steel sheet 22 around the sleeve 211, and rotate the pressing-down part 222 to above the corresponding limiting hole 11.

[0016] Preferably, a limiting notch 2221 is arranged on one side of the pressing-down part 222. The limiting notch 2221 is used to accommodate the corresponding optical fiber pin 4 and limit the optical fiber pin 4 in the horizontal direction; the lower end of the limiting notch 2221 is used to fit with the third limiting step 42 of the optical fiber pin 4.

[0017] Preferably, at least 8 pressing-down components 2 and at least 8 limiting holes 11 are arranged on the bottom plate 1, and each pressing-down component 2 corresponds to each limiting hole 11 one by one.

[0018] Preferably, an infusion hole 12 is further arranged on the bottom plate 1, and the infusion hole 12 penetrates through the upper surface of the bottom plate 1 to the lower surface of the bottom plate 1.

[0019] Preferably, a plurality of first limiting grooves 13 are further provided on the periphery of the bottom plate 1, and the first limiting grooves 13 are used to accommodate the limiting platforms on the grinding machine.

[0020] Preferably, the thickness of the annular gasket 3 is 1 mm - 3 mm.

[0021] Preferably, the thickness of the bottom plate 1 is 5 ± 0.1 mm.

[0022] The utility model provides a fixing fixture based on a portable grinding machine, which comprises: a bottom plate, a plurality of pressing components and a plurality of annular gaskets with different thicknesses. A plurality of limiting holes are provided on the bottom plate, and the limiting holes penetrate from the upper surface of the bottom plate to the lower surface of the bottom plate. An annular gasket with a corresponding thickness is arranged at the upper end of each limiting hole. The limiting holes and the through holes of the corresponding annular gaskets are used to accommodate the optical fiber ferrules. The upper end of the annular gasket is used to fit with the lower end of the first limiting step of the optical fiber ferrule, so as to lift the optical fiber ferrule by a corresponding height, and further enable the optical fiber ferrule to extend out from the lower end of the limiting hole with a preset length and be ground by the grinding machine; the plurality of pressing components are arranged on the bottom plate, and the optical fiber ferrule is limited by the pressing components; the grinding requirements of various different types of optical fiber ferrules are met by using annular gaskets with different thicknesses, and there is no need to carry a variety of different grinding fixtures, thus saving labor costs and device costs. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0025] Figure 2 It is a schematic structural diagram of the lower part of a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0026] Figure 3 It is a schematic structural diagram of an optical fiber ferrule provided by an embodiment of the present utility model;

[0027] Figure 4 It is a schematic structural diagram of a pressing component in a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0028] Figure 5 It is a cross-sectional view of a stretching sleeve in a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0029] Figure 6 Schematic diagram of the structure of the downward pressing component in a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0030] Figure 7 Schematic diagram of the structure of a fixing fixture based on a portable grinding machine provided by an embodiment of the present utility model;

[0031] Among them, the attached drawing numbers are as follows:

[0032] Base plate 1; Limit hole 11; Liquid infusion hole 12; First limit groove 13; Downward pressing component 2; Tensile sleeve 21; Sleeve 211; Second limit step 2111; Screw 212; Spring 213; Downward pressing steel sheet 22; Collar part 221; Downward pressing part 222; Limit notch 2221; Annular gasket 3; Optical fiber ferrule 4; First limit step 41; Third limit step 42. Specific implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present disclosure.

[0035] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more. In addition, for example, in the description, for the same type of nouns, the method of adding "A" and "B" at the end is used to describe them as two independent individuals. In this case, the features defined with "A" and "B" are only used for the purpose of distinguishing the same type of individuals and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0036] In the description of some embodiments, expressions such as "coupled", "coupling", and "connected" and their derivatives may be used. For example, in the description of some embodiments, the term "connected" may be used to indicate that two or more components have direct physical or electrical contact with each other. Another example is that in the description of some embodiments, the term "coupled" may be used to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the content of the present utility model.

[0037] In the description of the present utility model, there will be references to the expression "A and / or B", where A and B are used to formally represent specific feature contents. The corresponding expression includes the following three combinations: only A, only B, and the combination of A and B.

[0038] As used in the present utility model, "about", "substantially", or "approximate" includes the stated value and the average value within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by a person of ordinary skill in the art considering the measurement being discussed and the errors associated with the measurement of the specific quantity, i.e., the limitations of the measurement system.

[0039] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted in an open, inclusive sense, i.e., "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples", etc. are intended to indicate that the specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, but it does not limit that they can be carried by one embodiment or example in a combined manner.

[0040] In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] Embodiment 1:

[0042] Embodiment 1 of the present utility model provides a fixing jig based on a portable grinder, as Figures 1 - 3 shown, including: a bottom plate 1, a plurality of downward pressing components 2, and a plurality of annular gaskets 3 with different thicknesses, where:

[0043] A plurality of limiting holes 11 are provided on the bottom plate 1. The limiting holes 11 penetrate from the upper surface of the bottom plate 1 to the lower surface of the bottom plate 1. An annular gasket 3 with different corresponding thicknesses is provided at the upper end of each limiting hole 11. The through hole of the annular gasket 3 communicates with the corresponding limiting hole 11. The limiting holes 11 and the through holes of the corresponding annular gaskets 3 are used to accommodate the optical fiber pins 4. The upper end of the annular gasket 3 is used to fit with the lower end of the first limiting step 41 of the optical fiber pin 4, so as to lift the optical fiber pin 4 by a corresponding height. Furthermore, the optical fiber pin 4 extends out from the lower end of the limiting hole 11 with a preset length and is ground by a grinding machine.

[0044] In this embodiment, the fixing fixture based on the portable grinding machine needs to be used in cooperation with an existing portable grinding machine. The fixing fixture based on the portable grinding machine is arranged at the upper end of the portable grinding machine. The lower surface of the bottom plate 1 faces the grinding disc of the portable grinding machine. The fixing fixture of the portable grinding machine is used to set and fix one or more optical fiber pins 4. The limiting holes 11 are used for the optical fiber pins 4 to be inserted. The ceramic part at the lower end of the optical fiber pin 4 extends out from the lower end of the limiting hole 11, that is, from the lower end of the bottom plate 1. The grinding disc of the portable grinding machine grinds the ceramic part of the optical fiber pin 4 extending out from the lower end of the bottom plate 1. In this embodiment, the preset length is set by those skilled in the art according to the grinding requirements of the optical fiber pin 4. The preset length is different under different grinding requirements.

[0045] However, since the lengths of the optical fiber pins 4 required for grinding are different under different models or different requirements, the lengths of the optical fiber pins 4 extending out from the lower end of the bottom plate 1 are different, and grinding is performed by the grinding disc at the corresponding lengths. Therefore, in this embodiment, annular gaskets 3 with different thicknesses are provided at the upper end positions of the limiting holes 11. The optical fiber pin 4 extends out from the lower end of the bottom plate 1 after passing through the annular gasket 3 and the limiting hole 11 in sequence from the upper end of the bottom plate 1. The first limiting step 41 is arranged on the circumference of the optical fiber pin 4. The lower end of the first limiting step 41 fits with the annular gasket 3, so as to prevent the optical fiber pin 4 from directly passing through the lower end of the bottom plate 1. Since the distance between the lower end of the same type of optical fiber pin 4 and the lower end of the first limiting step 41 is known and fixed, and at the same time the thickness of the bottom plate 1 is also fixed, the annular gaskets 3 with different thicknesses can adjust the distance between the lower end of the optical fiber pin 4 and the lower end of the bottom plate 1, so as to adapt to the grinding requirements of different types of optical fiber pins 4.

[0046] At the same time, since when the grinding disc grinds the lower end of the optical fiber pin 4, an upward acting force will be applied to the optical fiber pin 4, resulting in the optical fiber pin 4 being pushed up, so that the length of the lower end of the optical fiber pin 4 extending out relative to the lower end of the bottom plate 1 is reduced, affecting the grinding accuracy. Therefore, this embodiment also involves the following design:

[0047] As shown Figures 1 - 3 in the figure, a plurality of pressing components 2 are arranged on the bottom plate 1, and the pressing components 2 are used to press down the optical fiber pin 4 arranged in the corresponding limiting hole 11, so as to limit the optical fiber pin 4.

[0048] In this embodiment, the pressing components 2 and the limiting holes 11 are in one-to-one correspondence. Each pressing component 2 is used to press down the optical fiber pin 4 in the corresponding limiting hole 11, so as to continuously apply a downward acting force on the optical fiber pin 4, and prevent the optical fiber pin 4 from being lifted up due to the upward acting force of the grinding disc.

[0049] In this embodiment, since a plurality of limiting holes 11 and a plurality of pressing components 2 are arranged on the bottom plate 1, and annular gaskets 3 with different thicknesses can be correspondingly arranged on each limiting hole 11, not only can a plurality of optical fiber pins 4 be ground simultaneously, but also the grinding requirements of various different models of optical fiber pins 4 can be satisfied simultaneously. In practical applications, it is not necessary to carry a variety of different grinding jigs at the same time, which greatly reduces the number of jigs to be carried, can adapt to different working requirements and scenarios at the same time, and thus saves labor costs and device costs.

[0050] Furthermore, in this embodiment, since the annular gasket 3 will pad up the optical fiber pin 4 to different heights, the pressing component 2 needs to be adjusted for the optical fiber pin 4 with different padded heights. On the premise of adapting to the height of the optical fiber pin 4, it can also apply a downward acting force to the optical fiber pin 4. Therefore, this embodiment also involves the following design:

[0051] As shown Figure 4 in the figure, the pressing component 2 includes a stretching sleeve 21 and a pressing steel sheet 22, wherein: the stretching sleeve 21 is arranged on the bottom plate 1, the pressing steel sheet 22 is arranged on the stretching sleeve 21, the pressing steel sheet 22 is used to extend from the stretching sleeve 21 to the upper part of the corresponding limiting hole 11, and the lower surface of the pressing steel sheet 22 is used to press down the optical fiber pin 4, so as to limit the optical fiber pin 4. The pressing steel sheet 22 is used to receive an external force to change the distance between it and the bottom plate 1, so that the pressing steel sheet 22 can adapt to more models and optical fiber pins 4 with different grinding lengths.

[0052] As shown Figure 5As shown, the stretching sleeve 21 includes a sleeve 211, a screw 212, and a spring 213, where: the screw 212 is disposed on the bottom plate 1, the lower end of the screw 212 is in contact with the bottom plate 1, and the sleeve 211 is movably sleeved around the screw 212; a second limiting step 2111 is provided inside the sleeve 211, the upper end of the screw 212 is a nut, and the spring 213 is sleeved on the screw 212 and is located between the upper end of the second limiting step 2111 and the lower end of the nut.

[0053] As Figure 6 shown, the pressing steel sheet 22 includes a collar portion 221 and a pressing portion 222. The collar portion 221 is located at one end of the pressing steel sheet 22, and the pressing portion 222 is located at the other end of the pressing steel sheet 22; the collar portion 221 is rotatably sleeved around the sleeve 211 for rotating the pressing portion 222 above the corresponding limiting hole 11, and the pressing portion 222 is used for pressing the optical fiber ferrule 4 to limit the optical fiber ferrule 4.

[0054] As Figure 6 shown, a limiting notch 2221 is provided on one side of the pressing portion 222. The limiting notch 2221 is used for accommodating the corresponding optical fiber ferrule 4 and limiting the optical fiber ferrule 4 in the horizontal direction; the lower end of the limiting notch 2221 is used for fitting with the third limiting step 42 of the optical fiber ferrule 4.

[0055] In this embodiment, the collar portion 221 of the pressing steel sheet 22 is annular, and the collar portion 221 is rotatably sleeved around the sleeve 211. While ensuring that the collar portion 221 can rotate around the sleeve 211, a step is provided on the sleeve 211, and this step fits with the upper end of the collar portion 221 to limit the upper end of the collar portion 221. When the optical fiber ferrule 4 needs to be inserted into the corresponding limiting hole 11, in order to facilitate manual operation without being interfered by the pressing steel sheet 22, the pressing steel sheet 22 is rotated around the sleeve 211, and the pressing steel sheet 22 is first rotated to other directions to avoid the pressing steel sheet 22 blocking above the limiting hole 11 and affecting manual operation. After the optical fiber ferrule 4 is disposed in the limiting hole 11 and the annular gasket 3, by applying an upward pulling force to the sleeve 211, the pressing portion 222 moves upward, and the height of the pressing portion 222 above the upper end of the third limiting step 42 of the optical fiber ferrule 4 is increased. At the same time, the pressing steel sheet 22 is rotated, and the side of the pressing portion 222 provided with the limiting notch 2221 is rotated towards the optical fiber ferrule 4 until the optical fiber ferrule 4 enters the limiting notch 2221. At this time, the sleeve 211 is released, and under the action of the spring 213, the sleeve 211 rebounds downward, and the lower end of the pressing portion 222 fits with the upper end of the third limiting step 42 to realize the limiting of the optical fiber ferrule 4.

[0056] Here, it should be noted that when there is no external force, the height of the downward pressing steel sheet 22 is relatively low, which can meet most grinding requirements. Specifically, for most optical fiber pins 4, the following is satisfied: when the optical fiber pin 4 is lifted by the corresponding height by the annular gasket 3, and the downward pressing steel sheet 22 has not yet abutted against the upper end of the third limiting step 42, the height of the third limiting step 42 is higher than the height of the downward pressing steel sheet 22. Therefore, when the limiting notch 2221 is sleeved on the upper end of the third limiting step 42, the downward pressing steel sheet 22 will be lifted by a certain height by the optical fiber pin 4. At this time, the sleeve 211 is lifted synchronously. However, since the screw 212 is fixed on the bottom plate 1, relative movement will occur between the sleeve 211 and the screw 212. At this time, the distance between the upper end of the second limiting step 2111 and the lower end of the nut decreases, and the spring 213 between the upper end of the second limiting step 2111 and the lower end of the nut is compressed; under the action of the elastic restoring force of the spring 213, a downward acting force will be applied to the sleeve 211. Therefore, the lower surface of the downward pressing steel sheet 22 will apply a downward pressure to the optical fiber pin 4. The optical fiber pin 4 is limited between the downward pressing steel sheet 22 and the grinding plate under the opposite acting forces of the downward pressing steel sheet 22 and the grinding plate, ensuring the stability of the optical fiber pin 4 during grinding.

[0057] Furthermore, as Figure 1 shown, in this embodiment, a feasible structure of a fixing fixture based on a portable grinding machine is provided. Among them, at least 8 downward pressing components 2 and at least 8 limiting holes 11 are provided on the bottom plate 1, and each downward pressing component 2 corresponds to each of the limiting holes 11 one by one.

[0058] In this embodiment, different or the same annular gaskets 3 can be correspondingly provided on each of the limiting holes 11. All the limiting holes 11 can be arranged around the center of the bottom plate 1, all the downward pressing components 2 can be arranged around the center of the bottom plate 1, and at the same time, each downward pressing component 2 corresponds to each of the limiting holes 11 one by one. The thickness of the annular gasket 3 can be 1 mm - 3 mm, that is, the thickness of the annular gasket 3 can be 1 mm, the thickness of the annular gasket 3 can be 2 mm, and the thickness of the annular gasket 3 can be 3 mm; the thickness of the bottom plate 1 can be 5 ± 0.1 mm, that is, the thickness of the bottom plate 1 can be 4.9 mm, the thickness of the bottom plate 1 can be 5 mm, and the thickness of the bottom plate 1 can be 5.1 mm.

[0059] Furthermore, in this embodiment, considering that when the portable grinding machine is working, it is also necessary to input coolant to ensure the normal operation of the portable grinding machine. Therefore, this embodiment also involves the following design:

[0060] As Figure 7As shown, an infusion hole 12 is further provided on the bottom plate 1, and the infusion hole 12 penetrates through the bottom surface of the bottom plate 1 from the upper surface of the bottom plate 1.

[0061] In this embodiment, the infusion hole 12 can be arranged at the center of the bottom plate 1. By introducing coolant from the upper end of the infusion hole 12, the coolant enters the grinding machine after passing through the infusion hole 12. On the other hand, the infusion hole 12 also reduces the mass of the bottom plate 1, making the mass of the fixing fixture based on the portable grinding machine lighter and improving the portability.

[0062] As Figure 7 shown, a plurality of first limiting grooves 13 are further provided on the periphery of the bottom plate 1, and the first limiting grooves 13 are used to accommodate the limiting platforms on the grinding machine.

[0063] In this embodiment, the limiting platforms on the grinding machine are arranged on the circumference of the upper end of the grinding machine and are used to limit the bottom plate 1 arranged at the upper end of the grinding machine.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixed fixture based on a portable grinder, characterized in that Comprising: A bottom plate (1), a plurality of downward pressing components (2), and a plurality of annular gaskets (3) with different thicknesses, wherein: A plurality of limiting holes (11) are provided on the bottom plate (1), the limiting holes (11) penetrate from the upper surface of the bottom plate (1) to the lower surface of the bottom plate (1), and an annular gasket (3) with a corresponding thickness is provided at the upper end of each limiting hole (11), and the through hole of the annular gasket (3) communicates with the corresponding limiting hole (11); the limiting hole (11) and the through hole of the corresponding annular gasket (3) are used to accommodate the optical fiber pin (4), and the upper end of the annular gasket (3) is used to fit with the lower end of the first limiting step (41) of the optical fiber pin (4), so as to raise the optical fiber pin (4) by a corresponding height, and further enable the optical fiber pin (4) to extend from the lower end of the limiting hole (11) with a preset length and be ground by a grinding machine; The plurality of downward pressing components (2) are provided on the bottom plate (1), and the downward pressing component (2) is used to press downward on the optical fiber pin (4) arranged in the corresponding limiting hole (11), so as to limit the optical fiber pin (4).

2. The fixed fixture based on the portable grinder according to claim 1, wherein, The downward pressing component (2) includes a stretching sleeve (21) and a downward pressing steel sheet (22), wherein: The stretching sleeve (21) is provided on the bottom plate (1), the downward pressing steel sheet (22) is provided on the stretching sleeve (21), the downward pressing steel sheet (22) is used to extend from the stretching sleeve (21) to above the corresponding limiting hole (11), and the lower surface of the downward pressing steel sheet (22) is used to press downward on the optical fiber pin (4), so as to limit the optical fiber pin (4); The downward pressing steel sheet (22) is used to receive an external force to change the distance between it and the bottom plate (1).

3. The fixed fixture based on the portable grinder according to claim 2, wherein The stretching sleeve (21) includes a sleeve (211), a screw (212), and a spring (213), wherein: The screw (212) is provided on the bottom plate (1), the lower end of the screw (212) is connected to the bottom plate (1), and the sleeve (211) is movably sleeved around the screw (212); A second limiting step (2111) is provided on the inner side of the sleeve (211), the upper end of the screw (212) is a nut, and the spring (213) is sleeved on the screw (212) and is located between the upper end of the second limiting step (2111) and the lower end of the nut.

4. The fixed fixture based on the portable grinder according to claim 3, characterized in that The downward pressing steel sheet (22) includes a collar portion (221) and a downward pressing portion (222), wherein: The collar portion (221) is located at one end of the downward pressing steel sheet (22), and the downward pressing portion (222) is located at the other end of the downward pressing steel sheet (22); the collar portion (221) is rotatably sleeved around the periphery of the sleeve (211) and is used to rotate the downward pressing portion (222) to above the corresponding limiting hole (11).

5. The fixed fixture based on the portable grinder according to claim 4, characterized in that A limiting notch (2221) is provided on one side of the pressing portion (222). The limiting notch (2221) is used to accommodate a corresponding optical fiber ferrule (4) and limit the optical fiber ferrule (4) in the horizontal direction. The lower end of the limiting notch (2221) is used to abut against the third limiting step (42) of the optical fiber ferrule (4).

6. The fixed fixture based on a portable grinder according to any one of claims 1-5, characterized in that At least 8 pressing components (2) and at least 8 limiting holes (11) are provided on the bottom plate (1), and each pressing component (2) corresponds to each of the limiting holes (11) one by one.

7. The fixed fixture based on a portable grinder according to any one of claims 1-5, characterized in that, An infusion hole (12) is further provided on the bottom plate (1), and the infusion hole (12) penetrates from the upper surface of the bottom plate (1) to the lower surface of the bottom plate (1).

8. The fixed fixture based on a portable grinder according to any one of claims 1-5, characterized in that, A plurality of first limiting grooves (13) are further provided on the periphery of the bottom plate (1), and the first limiting grooves (13) are used to accommodate the limiting platforms on the grinding machine.

9. The fixed fixture based on the portable grinder according to any one of claims 1-5, characterized in that, The thickness of the annular gasket (3) is 1 mm - 3 mm.

10. The fixed fixture based on a portable grinder according to any one of claims 1-5, characterized in that, The thickness of the bottom plate (1) is 5 ± 0.1 mm.

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