CN109702256B - Mobile terminal receiver groove body machining method - Google Patents
Mobile terminal receiver groove body machining method Download PDFInfo
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- CN109702256B CN109702256B CN201811489932.1A CN201811489932A CN109702256B CN 109702256 B CN109702256 B CN 109702256B CN 201811489932 A CN201811489932 A CN 201811489932A CN 109702256 B CN109702256 B CN 109702256B
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Abstract
The invention discloses a mobile terminal receiver tank body processing method, which comprises the following steps: forming a receiver sound cavity in a nano injection molding mode; and milling and forming a first part of a deep groove part in the sound tube transfer groove for multiple times in a zigzag unidirectional reverse milling mode, wherein the first part of the deep groove part is communicated with the sound cavity of the earphone after being milled and formed. According to the processing method of the mobile terminal receiver groove body provided by the invention, the first part of the deep groove part is milled and formed in a reverse milling mode all the time, and burrs generated by reverse milling are smaller than those generated by forward milling, so that the workload of post-processing can be reduced, and the processing efficiency of the receiver groove body is improved.
Description
Technical Field
The invention relates to the technical field of mobile terminal processing methods, in particular to a mobile terminal earphone slot body processing method.
Background
As shown in fig. 1, the sound output barrel transfer groove 20 is used for communicating the earphone sound cavity 10 with a back speaker, and is generally formed directly on the mobile terminal housing (for example, formed on the mobile terminal middle frame in fig. 2 to 5; 40 in fig. 2 is a display screen mounting groove, and 50 in fig. 4 is a circuit board mounting groove, which are arranged back to back), the moving path of a cutter during milling of the conventional sound output barrel transfer groove 20 is shown in fig. 6 to 8 (reference sign et in fig. 8 represents the moving path of the cutter), and after the cutter descends to the processing surface, the cutter reciprocates along the preset sound output barrel transfer groove according to the sequence of back milling, forward milling and back milling, and gradually descends to form a zigzag cutter path. The problems are that: the burr generated by the forward milling is large, the post-treatment workload is large, and the machining efficiency is low.
It can be seen that the prior art is still in need of improvement and development.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a mobile terminal earphone slot body processing method, and aims to solve the problems that burrs generated by down milling are large, the post-processing workload is large, and the processing efficiency is low in the prior art.
The technical scheme of the invention is as follows:
a mobile terminal receiver slot body processing method comprises the following steps:
forming a receiver sound cavity in a nano injection molding mode;
and milling and forming a first part of a deep groove part in the sound tube transfer groove for multiple times in a zigzag unidirectional reverse milling mode, wherein the first part of the deep groove part is communicated with the sound cavity of the earphone after being milled and formed.
In a further preferred aspect, the sound outlet barrel transfer groove further includes: a shallow groove portion, the shallow groove portion being injection molded.
In a further preferred aspect, the shallow groove portion is formed by nano injection molding.
In a further preferred scheme, the second part of the deep groove part is formed in a mode of injection molding and then groove expanding.
In a further preferred version, the deep groove first part is shaped by:
moving a cutter to an initial milling position, wherein the initial milling position is the position of the head end of a sound outlet barrel switching groove preset on an initial processing surface;
milling an initial processing surface by the cutter according to the shape of a preset sound outlet barrel transfer groove until a first preset cutter stopping position is reached, and forming a primary milling surface;
after the cutter rises to a preset height, the cutter moves towards the direction of the initial milling position until reaching a secondary milling position, wherein the secondary milling position is the position of the head end of a sound outlet barrel switching groove preset on the primary milling surface;
milling the primary milling surface by the cutter according to the shape of a preset sound outlet barrel transfer groove until a second preset cutter stopping position is reached, and molding the secondary milling surface;
the cutter rises to the preset height or above again, and moves towards the direction of the secondary milling position until reaching a tertiary milling position, wherein the tertiary milling position is the position of the head end of a sound outlet barrel switching groove preset on the secondary milling surface;
milling the secondary milling surface by the cutter according to the shape of the preset sound outlet barrel transfer groove until a third preset cutter stopping position is reached, and forming the third milling surface; and the rest is done in sequence until the milling process of the sound outlet barrel transfer groove is finished.
In a further preferred embodiment, the coordinates of the initial milling position are (X)0，Y0，Z0) The coordinate of the first preset tool stopping position is (X)1，Y0，Z1）。
In a further preferred embodiment, the secondary milling position has the coordinate (X)0，Y0，Z1) The coordinate of the second preset tool stopping position is (X)1，Y0，Z2）。
In a further preferred embodiment, the coordinate of the cubic milling bit is (X)0，Y0，Z2) The coordinate of the third preset tool stopping position is (X)1，Y0，Z3）。
In a further preferred aspect, the first part of the deep groove portion is milled and formed in five reciprocating cycles.
In a further preferred version, the tool is an end mill.
Compared with the prior art, the processing method of the mobile terminal receiver groove body provided by the invention comprises the following steps: forming a receiver sound cavity in a nano injection molding mode; and milling and forming a first part of a deep groove part in the sound tube transfer groove for multiple times in a zigzag unidirectional reverse milling mode, wherein the first part of the deep groove part is communicated with the sound cavity of the earphone after being milled and formed. According to the processing method of the mobile terminal receiver groove body provided by the invention, the first part of the deep groove part is milled and molded in a zigzag unidirectional reverse milling mode all the time, and burrs generated by reverse milling are smaller than those generated by forward milling, so that the workload of post-processing can be reduced, and the processing efficiency of the receiver groove body is improved.
Drawings
FIG. 1 is a cross-sectional view of a prior art horn transition slot;
fig. 2 is a schematic structural diagram of a first viewing angle of a middle frame of the mobile terminal after the processing of the sound outlet tube adapting groove is completed;
FIG. 3 is an enlarged view of detail C of FIG. 2;
FIG. 4 is a schematic structural diagram of a second viewing angle of the middle frame of the mobile terminal after the processing of the sound outlet barrel adapter groove is completed;
FIG. 5 is an enlarged view of detail D of FIG. 4;
FIG. 6 is a schematic view of a feed direction in milling a sound outlet tuning groove in the prior art;
FIG. 7 is a schematic view of a three-dimensional feed path during milling of a sound outlet tuning groove in the prior art;
FIG. 8 is an enlarged view of detail A of FIG. 7;
FIG. 9 is a top view of the sound tube-outputting adapter groove of the present invention before the groove-expanding after the injection of the shallow groove portion and the deep groove portion second portion;
FIG. 10 is a cross-sectional view of the sound tube transition groove of the present invention after injection molding of the shallow and deep groove portions second portions and prior to the flared groove;
FIG. 11 is a schematic view showing the position of the sound cavity of the receiver not communicating with the sound outlet barrel adapting groove before the expanding groove after the second parts of the shallow groove part and the deep groove part are injected;
FIG. 12 is a cross-sectional view of the formed tuning post-tuning post adapter groove of the present invention;
fig. 13 is a flow chart of a mobile terminal earpiece slot processing method of the present invention;
FIG. 14 is a flow chart of a first part of the method for machining the deep groove portion of the sound outlet tube fitting groove according to the present invention;
FIG. 15 is a schematic view of the direction of feed during milling of the first part of the deep groove portion of the sound outlet tube adapter groove according to the present invention;
FIG. 16 is a schematic diagram of a three-dimensional tool motion path during milling of a sound outlet barrel adapter slot according to the present invention;
fig. 17 is an enlarged view of a portion B in fig. 16.
Detailed Description
The invention provides a method for processing a mobile terminal receiver slot, which is further described in detail below by referring to the attached drawings and examples in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 13, the method for processing the earphone slot of the mobile terminal provided by the invention comprises the following steps:
s100, forming the earphone sound cavity in a nano injection molding mode.
In the preferred embodiment of the present invention, before the sound outlet tube adapting groove is not formed completely, the communication between the earphone sound cavity and the sound outlet tube adapting groove is divided into the following stages: 1. completely isolating (at this time, the sound outlet barrel adapter groove is only injection-molded with a shallow groove part and a deep groove part second part); 2. the function of the sound outlet tube switching groove cannot be completely realized (the tone quality is poor and the sound outlet tube switching groove cannot be used) though the sound outlet tube switching groove is communicated with the sound outlet tube switching groove; 3. the sound outlet tube switching groove is completely formed.
S200, milling and forming a first part of a deep groove part in the sound tube transfer groove for multiple times in a zigzag unidirectional reverse milling mode, wherein the first part of the deep groove part is communicated with a sound cavity of the earphone after being milled and formed.
FIG. 9 is a top view of the sound tube-outputting adapter groove of the present invention before the groove-expanding after the injection of the shallow groove portion and the deep groove portion second portion; FIG. 10 is a cross-sectional view of the sound tube transition groove of the present invention after injection molding of the shallow and deep groove portions second portions and prior to the flared groove; FIG. 11 is a schematic view showing the position of the sound cavity of the receiver not communicating with the sound outlet barrel adapting groove before the expanding groove after the second parts of the shallow groove part and the deep groove part are injected; fig. 12 is a cross-sectional view of the formed sound tube adapter groove of the present invention.
In the drawing, 210 denotes a shallow groove portion, 220 denotes a deep groove portion, and 222 denotes a second portion of the deep groove portion 220 before groove expansion after injection molding; note that the dotted line a does not actually exist, but exists only for defining the shallow groove portion 210 and the deep groove portion 220.
In a preferred embodiment of the present invention, the sound outlet barrel adapter groove 200 includes: shallow groove portion 210 and deep groove portion 220, wherein, shallow groove portion 210 injection moulding, preferably nanometer injection moulding. The injection molding of the shallow groove part is selected to improve the production efficiency, the injection-moldable part of the sound output barrel adapter groove 200 is injection-molded as much as possible, and the part which is not suitable for injection molding (for example, the depth value is large, and the sound quality of the mobile terminal cannot be affected by injection molding or after injection molding) is formed by CNC (computer numerical control) machining (including groove milling, groove expanding and the like).
As shown in fig. 9 to 12, further, a first part of the deep groove portion 220 is formed by milling; the second part is formed by adopting a mode of firstly performing injection molding and then expanding the groove, and is preferably formed by adopting a mode of firstly performing nano injection molding and then expanding the groove.
The deep groove portion 220 is used for communicating with the earpiece sound cavity 100, and specifically, a first portion (hereinafter, a first portion is referred to as a second portion 222 in fig. 10, which is not separately labeled) of the deep groove portion 220 is communicated with the earpiece sound cavity 100; that is, before the first part of the deep groove portion 220 is milled, the deep groove portion 220 is not communicated with the earpiece sound cavity 100, as shown in fig. 10 and 11, only the sound barrel adapter groove 200 can be seen from fig. 10, and only the earpiece sound cavity 100 can be seen from fig. 11.
In the present invention, the milling of the first part of the deep groove 220 is always performed by back milling. In the peripheral milling process, the reverse milling is classified into forward milling and reverse milling according to the relationship between the direction in which the milling cutter rotates to cut into a workpiece and the cutting feed direction. In the peripheral milling, the cutting direction of the milling cutter is divided into a forward milling and a backward milling according to the relationship between the cutting direction and the cutting feed direction. When the rotation direction of the contact surface of the milling cutter and the workpiece is opposite to the cutting feed direction, the reverse milling is called.
Backmilling is easier to remove material than forward milling, and produces less or even no burrs. In the traditional processing technology, the mode of alternately performing forward milling and backward milling is adopted, so that waste materials are easily accumulated, burrs are easily generated, the workload of post-processing is increased, and the processing of the sound outlet cylinder transfer groove 200 is more time-consuming. The invention always mills and shapes the first part of the deep groove part in a reverse milling mode, thereby reducing burrs, even completely avoiding the generation of the burrs, reducing the work of post-treatment and improving the processing efficiency of the earphone groove body.
In order to maintain the reverse milling state, the reverse milling state can be ensured by changing the rotation direction of the tool, for example, the feed direction shown in fig. 2, and making the rotation direction of the tool when the tool runs from right to left opposite to the rotation direction of the tool when the tool runs from left to right. But the more preferable scheme of the invention is as follows: the reverse milling state is maintained, and meanwhile, the cutter always runs in the same feed direction, the cutter path is shown in fig. 15, and the cutter movement track is shown in fig. 17.
As shown in fig. 14, the first portion of the deep groove portion 220 is preferably formed by the steps of:
s210, moving the cutter to an initial milling position, wherein the initial milling position is the position of the head end of a sound outputting barrel switching groove preset on an initial processing surface.
The initial processing surface refers to a processing surface to be milled, and it can be understood that the area of the initial processing surface is inevitably larger than or equal to the upper surface area of the sound outlet barrel transfer groove, and generally, the upper end of the sound outlet barrel transfer groove only occupies a part of the initial processing surface. In the present invention, it is preferable that the initial milling position is a point, and the coordinate of the point is (X)0，Y0，Z0) The coordinate of the point corresponding to the axial line of the tool, i.e. the projection of the tool onto the initial machining surface, is (X)0，Y0，Z0) When the positioning is finished, the positioning is finished.
S220, the cutter mills the initial machining surface according to the shape of the preset sound outlet barrel transfer groove until the initial machining surface reaches a first preset cutter stopping position, and the initial milling surface is formed.
The shape of the sound outlet barrel switching groove is preset, and which part of the groove body is also preset after milling, so that when the cutter is used for milling, the cutter is fed according to the shape of the sound outlet barrel switching groove, but it needs to be noted that the cutter is necessarily moved only in a given direction, and the cutter cannot return to the original path after stopping the cutter.
In a further preferred embodiment of the present invention, the first predetermined tool-stopping position has a coordinate of (X)1，Y0，Z1) (ii) a Z is0Minus Z1Showing the height difference X before and after the first milling of the milled partial groove body1Subtract X0The first milled length of the milled partial groove is shown. According to the invention, part of the groove body formed by milling the sound tube switching groove is preferably milled along a straight line for the first time.
And S230, after the cutter rises to the preset height, moving the cutter towards the direction of the initial milling position until the cutter reaches a secondary milling position, wherein the secondary milling position is the position of the head end of the sound outlet barrel switching groove preset on the primary milling surface.
In the invention, the preset height is preferably larger than the depth value of the sound outlet barrel transfer groove, that is, after the first milling is completed, the cutter is preferably moved out (in a lifting manner) of the sound outlet barrel transfer groove to move towards the direction of the initial milling position, so as to prevent the groove wall of the sound outlet barrel transfer groove from colliding with the cutter, damaging the groove wall and causing poor sound quality of the mobile terminal.
Preferably, the secondary milling position has a coordinate of (X)0，Y0，Z1) Coordinate (X) with the initial milling position0，Y0，Z0) In contrast, only the Z value is changed, i.e. the secondary milling position is directly below the primary milling position.
And S240, milling the primary milling surface by the cutter according to the shape of the preset sound outlet barrel transfer groove until a second preset cutter stopping position is reached, and forming the secondary milling surface.
Preferably, the second preset tool stopping position has a coordinate of (X)1，Y0，Z2) Coordinate (X) of the first predetermined stop position1，Y0，Z1) Compared with the prior art, only the Z value is changed, namely the second preset tool stopping position is positioned right below the first preset tool stopping position. Preferably, the secondary milling is also performed along a straight line, and the milling trajectory is the same as the primary milling.
And S250, the cutter rises to or above the preset height again and moves towards the direction of the secondary milling position until reaching a tertiary milling position, wherein the tertiary milling position is the position of the head end of the sound outlet barrel switching groove preset on the secondary milling surface.
This step is not substantially different from S230, and preferably, in S250, the final height of the tool after the tool is raised is the same as S230, and further, in the subsequent milling returning process (such as the initial milling position, the secondary milling position, and the tertiary milling position or other subsequent milling positions), the final height of the tool after the tool is raised is the same as S230.
S260, milling the secondary milling surface by the cutter according to the shape of the preset sound outlet barrel transfer groove until a third preset cutter stopping position is reached, and forming the third milling surface; and the rest is done in sequence until the milling process of the sound outlet barrel transfer groove is finished.
The specific milling times are determined according to the parameters of the depth of the milling formed groove body, the use of a cutter and the like(ii) a According to the invention, the part of the groove body formed by milling is preferably formed after five times of milling, and the part of the groove body is in a long strip shape. Preferably, the coordinate of the cubic milling bit is (X)0，Y0，Z2) The coordinate of the third preset tool stopping position is (X)1，Y0，Z3）。
In the invention, each layer of milling adopts a cutter path of the zigzag unidirectional reverse milling, and the reverse milling of the next layer is deeper than that of the previous layer, has the same feed direction and the same cutter rotating direction, so that not only are the generated burrs smaller, but also less accumulated waste materials are generated, the workload required by the post-treatment is greatly reduced, and the processing efficiency of the sound outlet barrel transfer groove 200 is further improved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (8)
1. A mobile terminal receiver groove body processing method is characterized by comprising the following steps:
forming a receiver sound cavity in a nano injection molding mode;
milling and forming a first part of a deep groove part in the sound tube transfer groove for multiple times in a zigzag unidirectional reverse milling mode, wherein the first part of the deep groove part is communicated with a sound cavity of the earphone after being milled and formed;
the deep-groove first portion is formed by:
moving a cutter to an initial milling position, wherein the initial milling position is the position of the head end of a sound outlet barrel switching groove preset on an initial processing surface;
milling an initial processing surface by the cutter according to the shape of a preset sound outlet barrel transfer groove until a first preset cutter stopping position is reached, and forming a primary milling surface;
after the cutter rises to a preset height, the cutter moves towards the direction of the initial milling position until reaching a secondary milling position, wherein the secondary milling position is the position of the head end of a sound outlet barrel switching groove preset on the primary milling surface, and the value of the preset height is greater than the depth value of the initial sound barrel switching groove; after the first cutting is finished, the cutter moves out of the sound tube switching groove in a lifting mode and moves towards the direction of the initial milling position;
milling the primary milling surface by the cutter according to the shape of a preset sound outlet barrel transfer groove until a second preset cutter stopping position is reached, and molding the secondary milling surface;
the cutter rises to the preset height again, and moves towards the direction of the secondary milling position until reaching a tertiary milling position, wherein the tertiary milling position is the position of the head end of a sound outlet barrel switching groove preset on the secondary milling surface;
milling the secondary milling surface by the cutter according to the shape of the preset sound outlet barrel transfer groove until a third preset cutter stopping position is reached, and forming the third milling surface; the rest is done in sequence until the milling process of the sound outlet barrel transfer groove is finished;
after the first milling is finished, moving the cutter out of the sound tube transfer groove and then moving the cutter towards the direction of the initial milling position;
the second part of the deep groove part is molded in a mode of firstly injection molding and then expanding the groove.
2. The processing method of the earphone slot body of the mobile terminal as claimed in claim 1, wherein the sound outlet barrel switching slot further comprises: a shallow groove portion, the shallow groove portion being injection molded.
3. The mobile terminal earpiece tank processing method of claim 2, wherein the shallow tank is formed by nano-injection molding.
4. The mobile terminal earphone slot body processing method as claimed in claim 1, wherein the coordinate of the initial milling position is (X)0，Y0，Z0) The coordinate of the first preset tool stopping position is (X)1，Y0，Z1)。
5. The mobile terminal receiver slot processing method as claimed in claim 4, wherein the two areThe coordinate of the secondary milling bit is (X)0，Y0，Z1) The coordinate of the second preset tool stopping position is (X)1，Y0，Z2)。
6. The mobile terminal earphone slot body processing method as claimed in claim 5, wherein the coordinate of the third milling position is (X)0，Y0，Z2) The coordinate of the third preset tool stopping position is (X)1，Y0，Z3)。
7. The mobile terminal earpiece slot processing method of claim 6, wherein the first part of the deep slot is milled and formed through five times of reciprocating cycles.
8. The mobile terminal earpiece slot machining method of claim 1, wherein the cutter is an end mill.
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| CN113953570A (en) * | 2021-11-26 | 2022-01-21 | 郑州亨睿精密机械科技有限公司 | Burr-free cutting process for heat dissipation bottom plate of power battery compartment |
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| SU490582A1 (en) * | 1974-04-04 | 1975-11-05 | Предприятие П/Я В-2190 | The method of forming artificial roughness on thin-walled parts |
| CN105306655B (en) * | 2015-11-27 | 2018-06-12 | 广东欧珀移动通信有限公司 | A kind of audio cavity structure and mobile terminal |
| CN106453722A (en) * | 2016-11-30 | 2017-02-22 | 努比亚技术有限公司 | Telephone receiver device and mobile terminal |
| CN106985336B (en) * | 2017-02-20 | 2019-02-12 | 上海与德通讯技术有限公司 | A kind of production method of mobile terminal shell |
| CN206922831U (en) * | 2017-05-26 | 2018-01-23 | 深圳天珑无线科技有限公司 | A kind of cellphone receiver structure and mobile phone |
| CN107175474B (en) * | 2017-06-28 | 2019-03-12 | 贵州黎阳国际制造有限公司 | A kind of processing method of groove |
| CN108819092B (en) * | 2018-06-25 | 2023-05-30 | 无锡市恒利弘实业有限公司 | Preparation method of high-pore-density aluminum or aluminum alloy material |
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