CN109016201B - Clamping and leveling method of graphite mold blank and manufacturing method of graphite mold - Google Patents
Clamping and leveling method of graphite mold blank and manufacturing method of graphite mold Download PDFInfo
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- CN109016201B CN109016201B CN201810836379.8A CN201810836379A CN109016201B CN 109016201 B CN109016201 B CN 109016201B CN 201810836379 A CN201810836379 A CN 201810836379A CN 109016201 B CN109016201 B CN 109016201B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 309
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 309
- 239000010439 graphite Substances 0.000 title claims abstract description 309
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 238000003801 milling Methods 0.000 claims abstract description 63
- 238000012545 processing Methods 0.000 claims abstract description 47
- 238000005498 polishing Methods 0.000 claims description 56
- 239000011265 semifinished product Substances 0.000 claims description 37
- 238000005520 cutting process Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- 238000003754 machining Methods 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 238000013003 hot bending Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
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Abstract
The invention is applicable to the technical field of manufacturing of graphite molds, and discloses a clamping and leveling method of a graphite mold blank and a manufacturing method of a graphite mold. The method for clamping and leveling the graphite die blank comprises the following steps: a clamping step, namely, mounting a graphite mold blank on a clamp; a detection step, namely placing the clamp provided with the graphite mold blank into detection equipment, and measuring height values of at least three points on the top surface of the graphite mold blank; and a processing step, taking the fixture with the graphite mold blank out of the detection equipment, and leveling the graphite mold blank arranged on the fixture according to the detection result of the detection step. In the specific production process, the graphite die blank is clamped and leveled by adopting the method for clamping and leveling the graphite die blank, and then the leveled graphite die blank is placed into a milling machine for milling, so that the dimensional accuracy of the finally processed graphite die can be ensured.
Description
Technical Field
The invention relates to the technical field of manufacturing of graphite molds, in particular to a clamping and leveling method of a graphite mold blank and a manufacturing method of a graphite mold.
Background
In the prior art, a graphite mold for processing a glass cover plate of a mobile phone is directly placed into a milling machine for milling after a graphite mold blank is clamped on a clamp in a processing process, so that the problem that the graphite mold blank is not clamped flatly due to the abrasion of the clamp is easily caused, the milling precision of the graphite mold is seriously influenced, and the finally processed graphite mold cannot meet the design requirements.
Disclosure of Invention
The invention aims to provide a method for clamping and leveling a graphite die blank, which aims to solve the technical problem that the milling precision of a graphite die is easily influenced by uneven clamping of the graphite die blank because the conventional graphite die blank is directly placed into a milling machine for milling after being clamped on a clamp.
In order to achieve the purpose, the invention provides the following scheme: the clamping and leveling method of the graphite mold blank comprises the following steps:
a clamping step, namely, mounting a graphite mold blank on a clamp;
a detection step, namely placing the clamp provided with the graphite mold blank into detection equipment, and measuring height values of at least three points on the top surface of the graphite mold blank;
and a processing step, taking the fixture with the graphite mold blank out of the detection equipment, and leveling the graphite mold blank arranged on the fixture according to the detection result of the detection step.
Optionally, the outer contour of the graphite mold blank is rectangular;
in the detection step, the height values of four points on the top surface of the graphite mold blank are detected by the detection equipment, and the four points are respectively close to four top angles of the top surface of the graphite mold blank.
Optionally, in the step of processing, an embodiment of leveling the graphite mold blank is as follows:
if the error values of the height values of the four points of the graphite mold blank detected by the detection equipment are less than or equal to 0.01mm, finishing leveling; and if the error values of the height values of the four points of the graphite mold blank detected by the detection device are greater than 0.01mm, according to the detection value of the detection device, padding tin foil paper below the part with the small height value of the graphite mold blank, and repeating the detection step and the processing step until the error values of the height values of the four points of the graphite mold blank detected by the detection device are less than or equal to 0.01 mm.
Optionally, the embodiment of padding the tin foil paper below the graphite mold blank in the processing step is as follows: and loosening the clamp of the graphite mold blank, placing the tin foil paper into the clamp below the part with the small height value of the graphite mold blank, and then locking the graphite mold blank on the clamp.
Optionally, the detection device is a numerically-controlled machine tool with a detection probe inside, in the detection step, the detection probe moves to a position above a point to be detected of the graphite mold blank according to a control program of the numerically-controlled machine tool, then descends to abut against the point to be detected to detect a coordinate value of the point, and the numerically-controlled machine tool outputs a height value of the point according to feedback information of the detection probe; and/or the presence of a gas in the atmosphere,
the fixture comprises a fixed seat, a plurality of pressing plates and a plurality of fasteners, wherein the fixed seat is provided with a concave cavity for accommodating the graphite mold blank, each pressing plate is detachably connected with the fixed seat through the fasteners respectively, and the pressing plates are distributed at intervals around the concave cavity; the mode of installing the graphite mold blank in the clamp is as follows: and placing the graphite mold blank into the concave cavity, and locking the pressing plate through the fastener so as to enable the pressing plate to tightly press the graphite mold blank.
A second object of the present invention is to provide a method for manufacturing a graphite mold, which includes the steps of:
cutting, namely cutting the graphite raw material to obtain a graphite die cutting piece;
grinding, namely grinding each outer surface of the graphite die cutting piece to obtain a graphite die blank;
a clamping leveling step, namely installing the graphite mold blank on a clamp by adopting the clamping leveling method of the graphite mold blank as claimed in any one of claims 1 to 5, and leveling the graphite mold blank on the clamp;
milling, namely milling the graphite mold blank clamped on the clamp to obtain a graphite mold semi-finished product;
and polishing, namely polishing the graphite mold semi-finished product to obtain the graphite mold.
Optionally, the milling step comprises the sub-steps of:
a feeding sub-step, namely placing the clamp clamped with the graphite mold blank in a material warehouse;
a feeding and transferring substep, wherein the fixture with the graphite mold blank clamped in the material warehouse is transferred to a numerical control milling machine provided with ultrasonic equipment through a mechanical arm;
a processing substep, milling the graphite mold blank by the numerical control milling machine to obtain a graphite mold semi-finished product;
and a blanking transferring substep, wherein the clamp clamped with the graphite mold semi-finished product in the numerical control milling machine is transferred to the material warehouse through the mechanical arm.
Optionally, the feeding sub-step includes the following sub-steps:
a sensor mounting step, namely mounting a sensor on a fixture clamped with a graphite mold blank;
a sensor information input step, namely identifying the sensor on the clamp and inputting the corresponding number into a database of a control system;
a placing step, namely placing the clamp clamped with the graphite mold blank and the sensor in a material groove of the material warehouse;
and a data association step, namely driving the trough to rotate, identifying the sensor on the clamp through a detector arranged in the stock bin, and establishing an association database for the trough in the stock bin and the clamp clamped with the graphite mold blank and the sensor by a control system according to feedback information of the detector.
Optionally, the machining of the graphite mold blank by the machining substep is ultrasonic milling, and the implementation manner is as follows: the cutter is driven by ultrasonic equipment to generate vibration, and the vibrating cutter is driven by a power device to rotate and move so as to perform ultrasonic milling on the graphite mold blank.
Optionally, the polishing step comprises the sub-steps of:
a manual polishing substep, wherein the graphite mold semi-finished product is manually polished by manually adopting a handheld sponge piece, and the handheld sponge piece is a part which is made of sponge and is convenient for being held by hands;
and a step of polishing the graphite mold semi-finished product after the step of polishing manually by a polishing machine to obtain the graphite mold.
According to the method for clamping and leveling the graphite mold blank and the method for manufacturing the graphite mold, provided by the invention, after the graphite mold blank is clamped on the clamp, the height values of at least three points on the top surface of the graphite mold blank are measured through the detection equipment, and then the graphite mold blank arranged on the clamp is leveled according to the detection result, so that the clamping and leveling of the graphite mold blank are realized. In the specific production process, the graphite die blank is clamped and leveled by adopting the method for clamping and leveling the graphite die blank, and then the leveled graphite die blank is placed into a milling machine for milling, so that the dimensional accuracy of the finally processed graphite die is fully ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for clamping and leveling a graphite mold blank according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a clamp according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for manufacturing a graphite mold according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a milling step provided by an embodiment of the present invention;
FIG. 5 is a schematic flow chart of a feeding substep provided by an embodiment of the present invention;
FIG. 6 is a schematic flow chart of a polishing step provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-2, the method for clamping and leveling a graphite mold blank according to an embodiment of the present invention includes the following steps:
a clamping step S310, namely, mounting the graphite mold blank on a clamp 1;
a detection step S320, placing the clamp 1 with the graphite mold blank in detection equipment, and measuring the height values of at least three points on the top surface of the graphite mold blank;
and a processing step S330, taking the fixture 1 with the graphite mold blank out of the detection equipment, and leveling the graphite mold blank arranged on the fixture 1 according to the detection result of the detection step.
In the embodiment of the invention, the clamping step S310 is used for realizing the assembly of the graphite mold blank on the clamp, and the detection step S320 is mainly used for detecting the height values of the graphite mold blank clamped on different points of the clamp 1; the processing step S330 is mainly used for performing correction and leveling processing on the graphite mold blank on the fixture 1 according to the data detected in the detecting step S320. Here, the detection step S320 is performed automatically by using a detection device, and has high detection accuracy and high detection efficiency.
Preferably, the detection device is a numerically controlled machine tool with a detection probe inside, in the detection step S320, the detection probe moves to a position above a point to be detected of the graphite mold blank according to a control program of the numerically controlled machine tool, then descends to abut against the point to be detected to detect a coordinate value of the point, and the numerically controlled machine tool outputs a height value of the point according to feedback information of the detection probe. The detection step adopts the numerical control machine tool to detect, so that before detection, only corresponding detection programs need to be programmed and stored in a control system of the numerical control machine tool, and the corresponding programs are selected according to needs to control the numerical control machine tool to automatically complete detection work during detection, so that the detection efficiency is high, and the detection precision reliability is high.
Preferably, the outer contour of the graphite mold blank is rectangular; in the detecting step S320, the detecting device detects height values of four points on the top surface of the graphite mold blank, and the four points are respectively arranged near four top corners of the top surface of the graphite mold blank. And if the difference value of the height values detected by the four points exceeds a certain range, the rough clamping of the graphite die can be judged to be uneven. The farther the distance between the detection points is, the more referential the detected numerical value is, and here, the four points are arranged at the positions close to the four vertex angles, so that the leveling accuracy can be fully ensured.
Preferably, the leveling process performed on the graphite mold blank in the processing step S330 is as follows:
if the error values of the height values of four points of the graphite mold blank detected by the detection equipment are less than or equal to 0.01mm, finishing leveling; and if the error values of the height values of the four points of the graphite mold blank detected by the detection device are greater than 0.01mm, according to the detection value of the detection device, padding tin foil paper below the part with the small height value of the graphite mold blank, and repeating the detection step S320 and the processing step S330 until the error values of the height values of the four points of the graphite mold blank detected by the detection device are less than or equal to 0.01 mm. The graphite mold blank on the clamp 1 is corrected and leveled in a mode of padding tin foil paper, and the operation is simple and convenient; after the tin foil paper is padded, the detection step S320 and the processing step S330 are repeated until the error values of the height values of the four top corners of the graphite mold blank detected by the detection equipment are less than or equal to 0.01mm, so that the leveling precision is ensured.
Preferably, the embodiment of padding the tin foil paper under the graphite mold blank in the processing step S330 is as follows: and loosening the clamp to clamp the graphite mold blank, placing the tin foil paper into the clamp below the part with small height value for detecting the graphite mold blank, and then locking the graphite mold blank on the clamp 1. Here, the leveling processing manner of the processing step S330 is simple and easy to operate.
Preferably, the fixture 1 includes a fixing seat 11, a plurality of pressing plates 12 and a plurality of fasteners (not shown), the fixing seat 11 is provided with a cavity 111 for accommodating a graphite mold blank, each pressing plate 12 is detachably connected to the fixing seat 11 through the fastener, and each pressing plate 12 is distributed around the cavity 111 at intervals;
the mode of installing the graphite mold blank in the clamp is as follows: the graphite mold blank is placed in the cavity 111, and the pressing plate 12 is locked by the fastener, so that the pressing plate 12 compresses the graphite mold blank. Here, the graphite mold blank is locked on the clamp 1 through the pressing plate 12 and the fastener, and the installation is stable and reliable, and the dismounting is convenient, and the graphite mold blank is conveniently and rapidly dismounted in the leveling process, thereby being beneficial to improving the clamping and leveling efficiency of the graphite mold blank.
Specifically, the platen 12 may compress the graphite mold blank from the side or above the graphite mold blank to effect locking of the graphite mold blank.
In the embodiment of the invention, the graphite mold blank is firstly arranged on the clamp 1, then the clamp 1 is placed in the detection equipment, the detection equipment is controlled to operate, the graphite mold blank is detected and the measured values of all detection points of the graphite mold blank are output and displayed, and tin foil paper is padded below the detection points of the measured values according to the measured values, so that the graphite mold blank can be leveled on the clamp, namely, the operation is simple and convenient.
As shown in fig. 2 to 6, further, an embodiment of the present invention provides a method for manufacturing a graphite mold, including the following steps:
a cutting step S100, cutting the graphite raw material to obtain a graphite die cutting piece;
a grinding step S200, wherein the grinding processing is carried out on each outer surface of the graphite die cutting piece to obtain a graphite die blank;
a clamping leveling step S300, namely, installing the graphite mold blank on the clamp 1 by adopting the clamping leveling method of the graphite mold blank, and leveling the graphite mold blank on the clamp;
a milling step S400, milling the graphite mold blank clamped on the clamp to obtain a graphite mold semi-finished product;
and a polishing step S500, polishing the graphite mold semi-finished product to obtain the graphite mold.
In the embodiment of the invention, the cutting step S100 is mainly used for cutting and processing the graphite raw material to prepare a graphite mold blank with an external contour shape similar to that of the graphite mold and an external contour size slightly larger than that of the graphite mold; the grinding step S200 is mainly used for grinding the outer surfaces of the graphite mold blank prepared in the cutting step S100 to prepare the graphite mold blank; the clamping leveling step S300 is mainly used for mounting the graphite mold blank manufactured in the grinding step S200 on the fixture 1, and calibrating and leveling the graphite mold blank on the fixture 1 to ensure the subsequent processing precision of the graphite mold blank; the milling step S400 is mainly used for machining holes, grooves and other features, and specifically, the holes, grooves and other features are machined on the graphite mold blank leveled in the clamping leveling step S300 through ultrasonic milling to obtain a graphite mold semi-finished product; the polishing step S500 is mainly used to polish the graphite mold semi-finished product to obtain a graphite mold with high surface precision.
According to the embodiment of the invention, the graphite raw material is firstly cut to obtain the graphite mold cutting piece, and then the graphite mold cutting piece is sequentially subjected to grinding, milling and polishing, so that the processing technology of the graphite mold is effectively optimized, the processing process operation of the graphite mold is simplified, and the processing efficiency of the graphite mold is favorably improved; the graphite die blank is subjected to surface grinding processing and clamping leveling before milling processing, so that the processing efficiency and the processing precision of the graphite die can be further improved. In addition, the graphite mold blank is clamped and leveled by adopting the method for clamping and leveling the graphite mold blank, and then the leveled graphite mold blank is placed into a milling machine for milling, so that the dimensional accuracy of the finally processed graphite mold is fully ensured.
Preferably, the graphite die cutting member has a rectangular block structure, and the length of the graphite die cutting member is defined as a1Defining the width of the graphite die cutting member as b1Defining the length of the graphite mold as a2Defining the width of the graphite mold as b2Then a is1、b1、a2、b2Satisfies the relationship: a is1-a2＝0.08mm～0.12mm，b1-b2The embodiment of the cutting step S100 is that, when the diameter is 0.08mm to 0.12 mm: according to the length a of the graphite die cutting piece1And the width b of the graphite die cutting member1And cutting the graphite raw material to obtain the graphite die cutting piece. Here, the length a of the graphite mold cut piece is set to1Width b1Are respectively set to be a than the length of the graphite mold2Width b20.08 mm-0.12 mm larger, so that enough processing allowance can be reserved for the subsequent processing of the graphite die blank to ensureThe machining precision is high, the repeated machining times of subsequent machining are not too large, and the machining precision and the machining efficiency are guaranteed.
Preferably, a1、b1、a2、b2Satisfies the relationship: a is1-a2＝0.1mm，b1-b2The thickness is 0.1mm, so that the processing precision and the processing efficiency of the graphite mold can be well balanced.
Preferably, the material cutting step S100 is implemented as follows: and cutting the graphite raw material by using a sawing machine to obtain a graphite die cutting piece. Here, the cutting step S100 is implemented by using a sawing machine, which is beneficial to ensuring the cutting precision and the cutting efficiency.
Preferably, the graphite mold blank is a rectangular block structure, and the length of the graphite mold blank is defined as a3Defining the width of the graphite mold blank as b3Then a is3、b3、a2、b2Satisfies the relationship: a is3-a2＝±0.01mm，b3-b2The embodiment of the grinding step S200 is as follows: according to the length a of the graphite die blank3And width b of graphite mold blank3And respectively grinding six outer surfaces of the graphite die cutting piece to obtain a graphite die blank. Here, the length a of the graphite mold blank is set3Width b3Are respectively set to be a than the length of the graphite mold2Width b2The size is 0.01mm, so that the machining precision and the machining efficiency of the graphite mold can be considered simultaneously.
Preferably, the milling step S400 comprises the following sub-steps:
a feeding sub-step S410, namely placing the clamp 1 clamped with the graphite mold blank in a material warehouse;
a feeding and transferring substep S420, transferring the fixture 1 with the graphite mold blank clamped in the material warehouse into a numerical control milling machine provided with ultrasonic equipment through a manipulator;
a processing substep S430, milling the graphite mold blank by a numerical control milling machine to obtain a graphite mold semi-finished product;
and a blanking transferring substep S440, wherein the clamp 1 with the graphite mold semi-finished product clamped in the numerical control milling machine is transferred to a stock bin through a manipulator.
In this preferred embodiment, place anchor clamps 1 that the clamping has the graphite jig blank in the feed bin earlier, then transmit the built-in anchor clamps that accompany the graphite jig blank in the feed bin to numerically controlled fraise machine through the manipulator and carry out ultrasonic milling processing, after the numerically controlled fraise machine carries out ultrasonic milling processing to the graphite jig blank and accomplishes and obtain graphite jig semi-manufactured goods, rethread manipulator transmits built-in anchor clamps 1 that accompany the graphite jig semi-manufactured goods in the numerically controlled fraise machine to the feed bin in, thereby graphite jig blank's full automatization milling processing has been realized, do benefit to like this and reduce human cost and artifical intensity of labour, do benefit to the big batch milling processing of graphite jig blank. In the specific production process, one worker can simultaneously control a plurality of numerical control milling machines.
In addition, the graphite mold semi-finished product is subjected to ultrasonic milling by the numerical control milling machine, so that before processing, only corresponding processing programs need to be programmed and stored in a control system of the numerical control milling machine, the corresponding programs are selected according to needs during processing, the numerical control milling machine can be controlled to automatically process the required graphite mold, the reliability of the milling precision is high, meanwhile, the large-batch ultrasonic milling of the graphite mold semi-finished product is facilitated, and the size uniformity of the graphite mold processed by the large-batch ultrasonic milling is high.
Preferably, the feeding substep S410 comprises the substeps of:
a sensor mounting step S411, wherein a sensor is mounted on the fixture 1 clamped with the graphite mold blank;
a sensor information inputting step S412, namely identifying the number of the sensor on the clamp and inputting the corresponding number into a database of the control system;
a placing step S413, wherein the fixture 1 with the graphite mold blank and the sensor is placed in a material groove of a material warehouse;
and a data association step S414, namely, driving the trough to rotate, identifying the sensor on the clamp 1 through the detector arranged in the stock bin, and establishing an association database for the trough in the stock bin and the clamp 1 clamped with the graphite mold blank and the sensor by the control system according to feedback information of the detector.
In the preferred embodiment, deposit the graphite jig blank through the feed bin, place the silo of feed bin back at anchor clamps 1 that will be equipped with graphite jig blank and sensor, the drive silo is rotatory, and through installing the sensor on the detector discernment anchor clamps 1 in the feed bin, thereby make control system can establish the associative database for the silo in the feed bin and the anchor clamps 1 that the clamping has graphite jig blank and sensor, and then be convenient for control system control manipulator is automatic to be equipped with the graphite jig blank in the feed bin and the anchor clamps 1 of sensor and transfer to in the numerically controlled fraise machine and carry out milling process, do benefit to the automatic milling process that realizes the graphite jig blank, do benefit to the cost of labor and the artifical intensity of labour in the reduction graphite jig production process on the one hand like this, on the other hand does benefit to the production efficiency that improves. Here, the silo in the feed bin and the anchor clamps 1 that have graphite jig blank and sensor of clamping establish the associative database, like this, do benefit to control system control manipulator and accurately get the material from the feed bin, can be convenient for simultaneously the staff knows the process progress of each graphite jig blank in the feed bin in real time.
Preferably, the sensor is a wireless radio frequency sensor and the detector is a wireless radio frequency reader. The wireless radio frequency sensor can store large-capacity data, can be repeatedly used, has the advantages of high reliability and simplicity in operation compared with the adoption of a bar code serial number, is small in size and convenient to install, can realize quick scanning, and greatly improves the convenience of installation and the efficiency of operation. The wireless radio frequency sensor can be fixed on the clamp 1 in a magnetic force adsorption mode.
Preferably, the machining of the graphite mold blank in the machining substep S430 is an ultrasonic milling process. In the milling process, the graphite die blank is milled by adopting the ultrasonic technology, so that the knife lines on the surface of the semi-finished product of the graphite die can be effectively refined, and the surface smoothness of the finally prepared graphite die can be improved.
Preferably, the ultrasonic milling of the graphite mold blank in the processing substep S430 is performed by: the cutter is driven by ultrasonic equipment to generate vibration, and the vibrating cutter is driven by a power device to rotate and move so as to perform ultrasonic milling on the graphite mold blank. The power device drives the cutter to rotate and move, so that the graphite mold blank can be milled by utilizing the cutter rotating at a high speed. The ultrasonic equipment is used for assisting the cutter to mill the graphite mold blank, so that the cutter has micro vibration in the milling process by utilizing the action of ultrasonic on the cutter, the machined knife pattern is thinner,
preferably, in the processing substep S430, the power device drives the tool to rotate and move in the following manner: the power device drives the installation main shaft with the cutter to rotate and move, so that the installation main shaft can drive the cutter to rotate and move. The power device comprises a rotary driving mechanism for driving the installation main shaft to rotate and a moving driving mechanism for driving the rotary driving mechanism to move, and the moving driving mechanism comprises at least one of a horizontal moving mechanism and a lifting moving mechanism. The rotation driving mechanism is preferably a motor or a combination of the motor and a speed reducer; the horizontal movement mechanism and the lifting movement mechanism are preferably cylinders.
Preferably, the ultrasonic equipment comprises an ultrasonic lantern ring sleeved on the mounting main shaft and an ultrasonic generator connected with the ultrasonic lantern ring, and the ultrasonic equipment drives the cutter to generate vibration in the following mode: the ultrasonic generator provides ultrasonic vibration frequency for the ultrasonic lantern ring, so that the main shaft and the cutter can be driven and installed by the ultrasonic lantern ring to generate vibration. The ultrasonic generator is preferably arranged outside the numerical control milling machine, and during specific processing, the ultrasonic generator generates ultrasonic waves with certain frequency and transmits the ultrasonic waves to the mounting main shaft through the ultrasonic lantern ring, so that the mounting main shaft can generate micro vibration, the cutter can generate micro vibration along with the mounting main shaft, and finally the purpose of assisting the cutter in milling the graphite mold blank through an ultrasonic technology is achieved.
Preferably, the polishing step S500 includes the following sub-steps:
a manual polishing substep S510, performing manual polishing treatment on the graphite mold semi-finished product by manually using a handheld sponge piece, wherein the handheld sponge piece is a part which is made of sponge and is convenient for being held by hands;
and a step S520 of mechanical polishing, namely, performing mechanical polishing treatment on the graphite mold semi-finished product after the step S500 of manual polishing through a polishing machine to obtain the graphite mold.
In the polishing step S500 of the graphite mold provided in the embodiment of the present invention, the graphite mold semi-finished product is polished by manually using the handheld sponge member, and then the graphite mold semi-finished product is polished again by the polishing machine, and the graphite mold semi-finished product is detected by the three-dimensional detection device to find that: the graphite mould manufactured by the polishing process has the advantages that the surface finish of the graphite mould is greatly improved, and the knife lines on the surface of the semi-finished product of the graphite mould are effectively and thoroughly removed, so that the improvement of the surface finish of the curved glass plate formed by hot bending of the graphite mould is facilitated, and the improvement of the attractiveness and the surface touch comfort of the product is facilitated.
Preferably, the first implementation manner of the manual polishing substep S510 is:
manually polishing the surface of the graphite mold semi-finished product for the first time by manually adopting a first handheld sponge piece,
manually polishing the surface of the graphite mold semi-finished product for the second time by adopting a second handheld sponge piece with the surface roughness smaller than that of the first handheld sponge piece; or,
the second embodiment of the manual polishing substep S510 is:
and manually polishing the surface of the graphite mold semi-finished product by manually adopting a second handheld sponge piece.
The first hand-held sponge is used for rough polishing, and the second hand-held sponge is used for fine polishing. In the first implementation manner of the manual polishing substep S510, the polished surface is high in cleanliness after being subjected to rough polishing and fine polishing, and the method is mainly suitable for polishing graphite mold semi-finished products with high surface roughness and thick knife lines; the second implementation manner of the manual polishing substep S510 is to directly perform a fine polishing at one time, has high polishing efficiency, and is mainly suitable for polishing graphite mold semi-finished products with small surface roughness and fine tool lines. In a specific application, the manual polishing substep S510 can be implemented according to a specific graphite mold semi-finished product by considering whether the first embodiment or the second embodiment is selected: when the milled graphite mold semi-finished product has large surface roughness and thick knife lines, the manual polishing substep S510 is implemented by adopting the first implementation mode, so that the surface smoothness of the prepared graphite mold can be fully ensured; when the milled graphite mold semi-finished product has small surface roughness and fine knife lines, the manual polishing substep S510 is implemented by adopting the second implementation mode, which is beneficial to considering both the surface smoothness and the polishing efficiency of the graphite mold.
Preferably, the handheld sponge piece (including the first handheld sponge piece and the second handheld sponge piece) is a sponge pad, the sponge pad is in the form of a washer, the outline shape of the outer edge of the sponge pad can be rectangular, circular or oval and the like, and the handheld sponge piece is simple in structure, easy to manufacture and mold and convenient to hold by a hand. Of course, the hand-held sponge member may be formed in other shapes for specific applications, such as a wheel-shaped sponge wheel or a spherical sponge ball.
Preferably, in the step S520 of mechanical polishing, the polishing process is 1 to 2 microns.
Preferably, in the sub-step S520 of mechanical polishing, the polishing machine performs mechanical polishing treatment on the graphite mold semi-finished product by driving the foam wheel or the sponge wheel to rotate and move, that is: in the sub-step S520 of machine polishing, the polishing machine drives the foam wheel or the sponge wheel to rotate and move horizontally at the same time, so that polishing can be performed by using the foam wheel or the sponge wheel rotating at a high speed.
Preferably, during the mechanical polishing treatment, the graphite mold semi-finished product is circularly cleaned by using a cleaning solution, so that the polishing precision is prevented from being influenced by scraps generated in the polishing process.
Preferably, the graphite mold is used for hot bending of a glass cover plate of the mobile terminal, and the mobile terminal is a mobile phone, a tablet personal computer and the like. According to the graphite mold manufactured by the manufacturing method, the production efficiency and the surface finish degree of the graphite mold are greatly improved, the labor cost is also greatly reduced, the mold opening efficiency of the mobile terminal glass cover plate is improved, the mold opening cost of the mobile terminal glass cover plate is reduced, the surface finish degree of the mobile terminal glass cover plate manufactured by the graphite mold is improved, and therefore the comfort of holding and touching the mobile terminal glass cover plate by a user is favorably improved. Of course, in specific applications, the method for manufacturing a graphite mold according to the embodiment can also be used for manufacturing a graphite mold for molding a glass plate of other equipment, such as a glass plate of an automobile.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The clamping and leveling method of the graphite mold blank is characterized by comprising the following steps:
a clamping step, namely, mounting a graphite mold blank on a clamp;
a detection step, namely placing the clamp provided with the graphite mold blank into detection equipment, and measuring height values of at least three points on the top surface of the graphite mold blank;
a processing step, taking the fixture with the graphite mold blank out of the detection equipment, and leveling the graphite mold blank arranged on the fixture according to the detection result of the detection step;
the outer contour of the graphite mold blank is rectangular;
in the detection step, the detection equipment detects height values of four points on the top surface of the graphite mold blank, and the four points are respectively close to four top corners of the top surface of the graphite mold blank;
the implementation mode of leveling the graphite die blank in the processing step is as follows:
if the error values of the height values of the four points of the graphite mold blank detected by the detection equipment are less than or equal to 0.01mm, finishing leveling; and if the error values of the height values of the four points of the graphite mold blank detected by the detection device are greater than 0.01mm, according to the detection value of the detection device, padding tin foil paper below the part with the small height value of the graphite mold blank, and repeating the detection step and the processing step until the error values of the height values of the four points of the graphite mold blank detected by the detection device are less than or equal to 0.01 mm.
2. The method for clamping and leveling a graphite mold blank as claimed in claim 1, wherein the tin foil paper is padded under the graphite mold blank in the processing step in the following manner: and loosening the clamp of the graphite mold blank, placing the tin foil paper into the clamp below the part with the small height value of the graphite mold blank, and then locking the graphite mold blank on the clamp.
3. The method for clamping and leveling the graphite mold blank according to any one of claims 1 to 2, wherein the detection device is a numerically controlled machine tool having a detection probe therein, in the detection step, the detection probe moves to a position above a point to be detected of the graphite mold blank according to a control program of the numerically controlled machine tool, then descends and abuts against the point to be detected to detect a coordinate value of the point, and the numerically controlled machine tool outputs a height value of the point according to feedback information of the detection probe; and/or the presence of a gas in the atmosphere,
the fixture comprises a fixed seat, a plurality of pressing plates and a plurality of fasteners, wherein the fixed seat is provided with a concave cavity for accommodating the graphite mold blank, each pressing plate is detachably connected with the fixed seat through the fasteners respectively, and the pressing plates are distributed at intervals around the concave cavity; the mode of installing the graphite mold blank in the clamp is as follows: and placing the graphite mold blank into the concave cavity, and locking the pressing plate through the fastener so as to enable the pressing plate to tightly press the graphite mold blank.
4. The manufacturing method of the graphite mold is characterized by comprising the following steps:
cutting, namely cutting the graphite raw material to obtain a graphite die cutting piece;
grinding, namely grinding each outer surface of the graphite die cutting piece to obtain a graphite die blank;
a clamping leveling step, namely installing the graphite mold blank on a clamp by adopting the clamping leveling method of the graphite mold blank as claimed in any one of claims 1 to 3, and leveling the graphite mold blank on the clamp;
milling, namely milling the graphite mold blank clamped on the clamp to obtain a graphite mold semi-finished product;
and polishing, namely polishing the graphite mold semi-finished product to obtain the graphite mold.
5. The method of manufacturing a graphite mold as claimed in claim 4, wherein the milling step includes the substeps of:
a feeding sub-step, namely placing the clamp clamped with the graphite mold blank in a material warehouse;
a feeding and transferring substep, wherein the fixture with the graphite mold blank clamped in the material warehouse is transferred to a numerical control milling machine provided with ultrasonic equipment through a mechanical arm;
a processing substep, milling the graphite mold blank by the numerical control milling machine to obtain a graphite mold semi-finished product;
and a blanking transferring substep, wherein the clamp clamped with the graphite mold semi-finished product in the numerical control milling machine is transferred to the material warehouse through the mechanical arm.
6. The method for manufacturing a graphite mold as claimed in claim 5, wherein the charging sub-step comprises the sub-steps of:
a sensor mounting step, namely mounting a sensor on a fixture clamped with a graphite mold blank;
a sensor information input step, namely identifying the sensor on the clamp and inputting the corresponding number into a database of a control system;
a placing step, namely placing the clamp clamped with the graphite mold blank and the sensor in a material groove of the material warehouse;
and a data association step, namely driving the trough to rotate, identifying the sensor on the clamp through a detector arranged in the stock bin, and establishing an association database for the trough in the stock bin and the clamp clamped with the graphite mold blank and the sensor by a control system according to feedback information of the detector.
7. The method for manufacturing a graphite mold as set forth in claim 5, wherein the machining of the graphite mold blank in the substep of machining is ultrasonic milling, and is carried out in such a manner that: the cutter is driven by ultrasonic equipment to generate vibration, and the vibrating cutter is driven by a power device to rotate and move so as to perform ultrasonic milling on the graphite mold blank.
8. The method for manufacturing a graphite mold as claimed in any one of claims 4 to 7, wherein the polishing step comprises the substeps of:
a manual polishing substep, wherein the graphite mold semi-finished product is manually polished by manually adopting a handheld sponge piece, and the handheld sponge piece is a part which is made of sponge and is convenient for being held by hands;
and a step of polishing the graphite mold semi-finished product after the step of polishing manually by a polishing machine to obtain the graphite mold.
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| CN201810836379.8A CN109016201B (en) | 2018-07-26 | 2018-07-26 | Clamping and leveling method of graphite mold blank and manufacturing method of graphite mold |
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| CN113977357B (en) * | 2020-12-31 | 2024-04-02 | 安徽金龙浩光电科技有限公司 | LOGO region polishing method for 3D glass graphite mold |
| CN115674459B (en) * | 2022-11-16 | 2024-09-24 | 曲靖恒毅炭素科技有限公司 | High-efficient processingequipment of graphite carbon circle |
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