阅读说明：本技术 可折叠玻璃开料与cnc精加工一次成型工艺 (Foldable glass cutting and CNC finish machining one-step forming process ) 是由 梁建 黄建军 陈优奇 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种可折叠玻璃开料与CNC精加工一次成型工艺,包括以下步骤：S2、安装定位治具；S4、安装专用砂轮；S6、安装可折叠玻璃原材料；S8、将可折叠玻璃原材料切割成多个坯料；S10、对每个坯料进行预精加工；S12、对每个预精加工产品进行精加工。本发明可在一台CNC机台上实现可折叠玻璃的开料、预精加工和精加工,从而得到所需的可折叠玻璃成品,降低了不良品产生的风险,提高了生产效率,降低了成本。(The invention discloses a foldable glass cutting and CNC finish machining one-step forming process, which comprises the following steps of: s2, mounting a positioning jig; s4, mounting a special grinding wheel; s6, mounting the foldable glass raw material; s8, cutting the foldable glass raw material into a plurality of blanks; s10, performing pre-finishing on each blank; and S12, finishing each pre-finished product. The invention can realize cutting, pre-finishing and finishing of the foldable glass on one CNC machine table, thereby obtaining the required foldable glass finished product, reducing the risk of producing defective products, improving the production efficiency and reducing the cost.)

1. A foldable glass cutting and CNC finish machining one-step forming process is characterized by comprising the following steps:

s2, installing and positioning a jig: the positioning jig is installed at the top end of a negative pressure gas storage mechanism on a CNC machine table and comprises a jig body, a plurality of through longitudinal grooves and a plurality of through transverse grooves are sequentially arranged at intervals from left to right and from front to back at the top end of the jig body, the longitudinal grooves and the transverse grooves are arranged in a crossed mode, the longitudinal grooves and the transverse grooves divide the top end of the jig body into a plurality of rectangular base stations, and a through hole and a gas suction groove communicated with the through hole are formed in the top end of each base station respectively;

s4, mounting a special grinding wheel: installing a special grinding wheel on a main shaft of a CNC machine table, wherein the special grinding wheel comprises a grinding wheel head, and the grinding wheel head comprises a first grinding wheel section, a second grinding wheel section and a third grinding wheel section which are sequentially connected from bottom to top;

s6, mounting the foldable glass raw material: placing the foldable glass raw material on the top end of the jig body, and vacuumizing the through hole of each base platform through a negative pressure air storage mechanism to enable negative pressure to be formed in an air suction groove of each base platform so as to adsorb and fix the foldable glass raw material, so that the foldable glass raw material is installed;

s8, cutting the foldable glass raw material into a plurality of blanks: feeding a first grinding wheel section of a special grinding wheel along one side of a first transverse groove of the jig body close to the center of the jig body, one side of a last longitudinal groove of the jig body close to the center of the jig body, one side of the last transverse groove of the jig body close to the center of the jig body and one side of the first longitudinal groove close to the center of the jig body in sequence, then feeding along two sides of the remaining transverse groove of the jig body in sequence from front to back, and then feeding along two sides of the remaining longitudinal groove of the jig body from left to right in sequence, so that a foldable glass raw material can be cut into a plurality of rectangular blanks, wherein each blank corresponds to one base station;

s10, performing pre-finishing on each blank: feeding two circles of the second grinding wheel section of the special grinding wheel along the outer contour of each blank to perform pre-finishing on each blank so as to obtain a pre-finished product, wherein four edges and corners of the pre-finished product are rounded corners;

s12, finishing each pre-finishing product: and feeding three times along the outer contour of each pre-finished product through a third grinding wheel section of the special grinding wheel to finish each pre-finished product so as to obtain the required foldable glass finished product.

2. The foldable glass cutting and CNC finishing one-shot forming process of claim 1, wherein in the step S8, the rotation speed of the main shaft is 20000r/min, the feeding speed is 0.2m/min, and the diameter of the first grinding wheel segment is 0.2m/minThe grit of the first wheel segment is 400.

3. The foldable glass blanking and CNC finishing one-shot forming process of claim 1, wherein in the step S10, the rotation speed of the spindle is 28000r/min, and the diameter of the second grinding wheel section is 28000r/minThe grit of the second wheel segment was 400 grit, with a pre-finishing feed rate of 300mm/min at the corners and 800mm/min at the straight edges of each blank.

4. The foldable glass blanking and CNC finishing one shot forming process of claim 1, wherein the forming process is characterized byIn the step S12, the rotation speed of the spindle is 28000r/min, and the diameter of the third grinding wheel segment isThe sand grain of the third grinding wheel segment is No. 1000, and the finishing feed speed is 600 mm/min.

5. The foldable glass frit cutting and CNC finishing one-shot forming process of claim 1, wherein in the step S8, the length and width of the blank are both 1mm larger than the length and width of the finished product.

6. The foldable glass blanking and CNC finishing one-shot forming process of claim 1, wherein in the step S10, the length and width of the pre-finished product are both 0.5mm larger than the length and width of the finished product.

7. The foldable glass cutting and CNC finish machining one-step forming process of claim 1, wherein the top end of the jig body is provided with four longitudinal grooves and three transverse grooves at intervals from left to right and from front to back in sequence, the four longitudinal grooves and the three transverse grooves divide the top end of the jig body into six base stations, and the number of blanks corresponds to the number of the base stations.

Technical Field

The invention relates to the technical field of foldable glass processing, in particular to a foldable glass cutting and CNC finish machining one-step forming process.

Background

With the development of the well-spraying type of the foldable flexible screen, products with foldable functions such as smart phones, intelligent wearable devices and tablet computers are more and more.

The substrate of the foldable flexible screen is typically foldable glass. For the manufacture of foldable glass, the current method is to cut the foldable glass raw material into blanks on one CNC machine, and then perform pre-finishing and finishing on the blanks on another CNC machine, so as to obtain the required foldable glass product. This mode of manufacture needs two CNC board, and manufacturing cost is high, and in manufacturing process, collapsible glass needs the secondary clamping, has clamping tolerance accumulation, has influenced processing positioning accuracy and machining precision, and the risk that produces the defective products is big.

Accordingly, there is a need for an improved foldable glass processing process.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a foldable glass cutting and CNC finish machining one-step forming process, which can realize cutting, pre-finish machining and finish machining of foldable glass on one CNC machine table so as to obtain a required foldable glass finished product, reduce the risk of defective products, improve the production efficiency and reduce the cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a foldable glass cutting and CNC finish machining one-step forming process comprises the following steps: s2, installing and positioning a jig: the positioning jig is installed at the top end of a negative pressure gas storage mechanism on a CNC machine table and comprises a jig body, a plurality of through longitudinal grooves and a plurality of through transverse grooves are sequentially arranged at intervals from left to right and from front to back at the top end of the jig body, the longitudinal grooves and the transverse grooves are arranged in a crossed mode, the longitudinal grooves and the transverse grooves divide the top end of the jig body into a plurality of rectangular base stations, and a through hole and a gas suction groove communicated with the through hole are formed in the top end of each base station respectively; s4, mounting a special grinding wheel: installing a special grinding wheel on a main shaft of a CNC machine table, wherein the special grinding wheel comprises a grinding wheel head, and the grinding wheel head comprises a first grinding wheel section, a second grinding wheel section and a third grinding wheel section which are sequentially connected from bottom to top; s6, mounting the foldable glass raw material: placing the foldable glass raw material on the top end of the jig body, and vacuumizing the through hole of each base platform through a negative pressure air storage mechanism to enable negative pressure to be formed in an air suction groove of each base platform so as to adsorb and fix the foldable glass raw material, so that the foldable glass raw material is installed; s8, cutting the foldable glass raw material into a plurality of blanks: feeding a first grinding wheel section of a special grinding wheel along one side of a first transverse groove of the jig body close to the center of the jig body, one side of a last longitudinal groove of the jig body close to the center of the jig body, one side of the last transverse groove of the jig body close to the center of the jig body and one side of the first longitudinal groove close to the center of the jig body in sequence, then feeding along two sides of the remaining transverse groove of the jig body in sequence from front to back, and then feeding along two sides of the remaining longitudinal groove of the jig body from left to right in sequence, so that a foldable glass raw material can be cut into a plurality of rectangular blanks, wherein each blank corresponds to one base station; s10, performing pre-finishing on each blank: feeding two circles of the second grinding wheel section of the special grinding wheel along the outer contour of each blank to perform pre-finishing on each blank so as to obtain a pre-finished product, wherein four edges and corners of the pre-finished product are rounded corners; s12, finishing each pre-finishing product: and feeding three times along the outer contour of each pre-finished product through a third grinding wheel section of the special grinding wheel to finish each pre-finished product so as to obtain the required foldable glass finished product.

Preferably, in step S8, the rotation speed of the spindle is 20000r/min, the feed speed is 0.2m/min, and the diameter of the first grinding wheel segment isThe grit of the first wheel segment is 400.

As a preferred technical solution, the stepsIn step S10, the spindle rotates at 28000r/min, and the second grinding wheel segment has a diameter of 28000r/minThe grit of the second wheel segment was 400 grit, with a pre-finishing feed rate of 300mm/min at the corners and 800mm/min at the straight edges of each blank.

Preferably, in step S12, the rotation speed of the spindle is 28000r/min, and the diameter of the third grinding wheel segment is 28000r/minThe sand grain of the third grinding wheel segment is No. 1000, and the finishing feed speed is 600 mm/min.

Preferably, in step S8, the length and width of the blank are both 1mm greater than the length and width of the finished product.

Preferably, in step S10, the length and width of the pre-finished product are both 0.5mm greater than the length and width of the finished product.

According to the preferable technical scheme, four longitudinal grooves and three transverse grooves are sequentially arranged at intervals on the top end of the jig body from left to right and from front to back, the top end of the jig body is divided into six base platforms by the four longitudinal grooves and the three transverse grooves, and the number of blanks corresponds to the number of the base platforms.

The invention has the beneficial effects that: the invention can realize cutting, pre-finishing and finishing of the foldable glass on one CNC machine table, thereby obtaining the required foldable glass finished product, avoiding secondary clamping, reducing the risk of defective products, improving the production efficiency, avoiding the use of a plurality of CNC machine tables and reducing the production cost.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a positioning fixture according to the present invention;

FIG. 2 is a schematic diagram of the structure of the negative pressure air storage mechanism of the present invention;

FIG. 3 is a schematic structural view of a special grinding wheel of the present invention;

FIG. 4 is a schematic structural view of the foldable glass raw material of the present invention being placed on the top end of the jig body of the positioning jig;

FIG. 5 is a schematic path of a first wheel segment feed of the dedicated grinding wheel of step S8 of the present invention;

FIG. 6 is an initial schematic of the present invention with pre-finishing of each blank;

FIG. 7 is an initial schematic of the present invention finishing each of the pre-finished products.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

The foldable glass cutting and CNC finish machining one-step forming process provided by the embodiment of the invention comprises the following steps of:

s2, mounting and positioning jig 10: the positioning jig 10 is installed on the top end of a negative pressure air storage mechanism 30 (see fig. 2) on the CNC machine. The CNC machine table is an existing CNC machine table used for cutting foldable glass raw materials into blanks, namely a CNC machine table used for material opening. As shown in fig. 1, the positioning jig 10 includes a jig body 12, a plurality of through longitudinal grooves 14 and a plurality of through transverse grooves 16 are sequentially arranged at intervals from left to right and from front to back on the top end of the jig body 12, the plurality of longitudinal grooves 14 and the plurality of transverse grooves 16 are arranged in a crossing manner, the plurality of longitudinal grooves 14 and the plurality of transverse grooves 16 divide the top end of the jig body 12 into a plurality of rectangular bases 18, and a through hole 24 and an air suction groove 22 communicated with the through hole 24 are respectively arranged on the top end of each base 18.

In this embodiment, four longitudinal grooves 14 and three transverse grooves 16 are sequentially arranged at intervals from left to right and from front to back on the top end of the jig body 12, and the four longitudinal grooves 14 and the three transverse grooves 16 divide the top end of the jig body 12 into six bases 18. It is understood that the number of the longitudinal grooves 14 and the transverse grooves 16 can be set according to actual conditions.

S4, mounting the special grinding wheel 40: the special grinding wheel 40 is mounted to a spindle of a CNC machine, and as shown in fig. 3, the special grinding wheel 40 includes a shank 42 and a grinding head connected to one end of the shank 42, and the shank 42 is used to be mounted to the spindle of the CNC machine. The grinding wheel head comprises a first grinding wheel section 44, a second grinding wheel section 46 and a third grinding wheel section 48 which are sequentially connected from bottom to top, and the third grinding wheel section 48 is connected with one end of the handle part 42.

In this embodiment, the diameter of the first grinding wheel segment isThe grit of the first wheel segment is 400. The diameter of the second grinding wheel segment isThe grit of the second wheel segment is 400. The diameter of the third grinding wheel segment isThe sand grain of the third grinding wheel segment is No. 1000.

After the special grinding wheel 40 is installed, concentricity of the special grinding wheel 40 and the spindle usually needs to be detected, specifically, a pointer of a dial indicator fixed on a CNC machine table is firstly contacted with a handle part 42 of the special grinding wheel 40, the spindle is started to rotate, the rotating speed of the spindle is 20-30r/min (revolutions per minute), whether deflection of the pointer of the dial indicator is within 0.02mm (millimeter) or not is observed, if the deflection of the pointer is within 0.02mm, the concentricity of the special grinding wheel 40 and the spindle is judged to be qualified, if the deflection of the pointer is greater than 0.02mm, the special grinding wheel 40 is installed again, and concentricity detection is carried out until the deflection of the pointer of the dial indicator is within 0.02 mm.

S6, mounting the foldable glass raw material 100: the foldable glass raw material 100 is placed on the top end of the jig body 12, so that the peripheral edges of the foldable glass raw material 100 correspond to the peripheral edges of the jig body 12, as shown in fig. 4, then the vacuum negative pressure control switch 32 (see fig. 2) of the negative pressure gas storage mechanism 30 is opened, the through hole 24 of each base station 18 is vacuumized through the negative pressure gas suction hole 34 (see fig. 2) of the negative pressure gas storage mechanism 30, so that negative pressure is formed in the gas suction groove 22 of each base station 18 to adsorb and fix the foldable glass raw material 100, and therefore the installation of the foldable glass raw material 100 is realized, the installation is stable and convenient, and the foldable glass raw material 100 is not damaged.

S8, cutting the foldable glass raw material 100 into a plurality of blanks 110 (see fig. 6): after the X, Y, Z triaxial processing origin point is set on the CNC machine, the main shaft is started to rotate, according to the programmed CNC processing program, the first grinding wheel section 44 of the special grinding wheel 40 firstly and sequentially performs cutting along one side of the first transverse groove 16 of the jig body 12 close to the center of the jig body 12, one side of the last longitudinal groove 14 close to the center of the jig body 12, one side of the last transverse groove 16 close to the center of the jig body 12 and one side of the first longitudinal groove 14 close to the center of the jig body 12, then, the cutting is sequentially carried out along the two sides of the left transverse groove 16 of the jig body 12 from front to back, and then the cutting is sequentially carried out along the two sides of the left longitudinal groove 14 of the jig body 12 from left to right, the foldable glass stock material 100 may thus be cut into a plurality of rectangular blanks 110 (see fig. 6), one for each abutment 18, for each blank 110. Because the top end of each base 18 is provided with the air suction groove 22, each base 18 can respectively absorb the corresponding blank 110, thereby facilitating the subsequent pre-finishing and finishing. This embodiment cuts the foldable glass stock material 100 primarily through the middle position of the first wheel segment 44.

The base 18 of the present embodiment is six, and the number of the blanks 110 corresponds to the number of the bases 18, and is also six. Fig. 5 shows a feeding path of the first grinding wheel segment 44, where a path of feeding along one side of the first transverse groove 16 of the jig body 12 close to the center of the jig body 12 is F1, a path of feeding along one side of the last longitudinal groove 14 close to the center of the jig body 12 is F2, a path of feeding along one side of the last transverse groove 16 close to the center of the jig body 12 is F3, a path of feeding along one side of the first longitudinal groove 14 close to the center of the jig body 12 is F4, paths of feeding along two sides of the transverse groove 16 are H1 and H2, respectively, and paths of feeding along two sides of the two longitudinal grooves 14 are H3, H4, H5, and H6, respectively.

S10, performing pre-finishing on each blank 110: as shown in fig. 6, the spindle is turned on, and according to the programmed CNC machining program, each blank 110 is pre-finished by the second grinding wheel segment 46 of the special grinding wheel 40 being fed two times along the outer contour of each blank 110 in, for example, a clockwise direction, so as to obtain a pre-finished product 120, wherein four corners of the pre-finished product 120 are rounded. This embodiment pre-refines each blank 110 primarily through the middle position of the second wheel segment 46.

S12, finishing each pre-finished product 120: as shown in fig. 7, the spindle rotation is started, and the third grinding wheel segment 48 of the special grinding wheel 40 is fed three times along the outer contour of each pre-finished product 120 in, for example, a clockwise direction according to the programmed CNC machining program to finish each pre-finished product 120, so as to obtain the desired foldable glass product. The number of blanks 110 of this embodiment is six, and thus the number of finished products is six. This embodiment essentially finishes each of the pre-finished products 120 by the middle position of the third wheel segment 48.

After step S12 is completed, the vacuum negative pressure control switch 32 of the negative pressure air storage mechanism 30 is closed to stop vacuuming the through hole 24 of each base 18 to stop adsorbing the foldable glass product, and then the foldable glass product is taken off from the base 18.

In this embodiment, in step S8, the rotation speed of the main shaft is 20000r/min and the feeding speed is 0.2 m/min. In step S10, the spindle rotates at 28000r/min, the pre-finishing feed rate at the corner corresponding to each blank 110 is 300mm/min, and the pre-finishing feed rate at the straight edge corresponding to each blank 110 is 800 mm/min. In the step S12, the rotation speed of the main shaft is 28000r/min, and the finishing feed speed is 600 mm/min.

In step S8, the length and width of the blank 110 are both 1mm greater than the length and width of the finished product, i.e., the single-side machining allowance is 0.5 mm. In step S10, the length and width of the pre-processed product 120 are both 0.5mm greater than the length and width of the finished product, i.e., the single-side machining allowance is 0.25 mm. For example, assuming that the length and width of the finished product are 150mm and 100mm, respectively, the length and width of the blank 110 are 151mm and 101mm, respectively, and the length and width of the pre-finished product 120 are 150.5mm and 100.5mm, respectively. It will be appreciated that the length and width of the machined blank 110, and the length and width of the pre-finished product 120 may be set as appropriate. The allowable tolerance of the length and the width of the blank 110 is +/-0.03 mm, and the allowable tolerance of the length and the width of the pre-finished product 120 is +/-0.015 mm.

In the step S10, during the feeding process of the second grinding wheel segment 46, the cutting depth of the first circle is 0.15mm, and the cutting depth of the second circle is 0.1 mm. In the step S12, in the feeding process of the third grinding wheel segment 48, the cutting depth of the first circle is 0.10mm, the cutting depth of the second circle is 0.10mm, and the cutting depth of the third circle is 0.05 mm.

Before step S6 is performed, the positioning jig 10 is usually cleaned to prevent the foldable glass raw material 100 from being contaminated by dust and the like.

The invention can realize cutting, pre-finishing and finishing of the foldable glass on one CNC machine table, thereby obtaining the required foldable glass finished product, avoiding secondary clamping, reducing the risk of defective products, improving the production efficiency, avoiding the use of a plurality of CNC machine tables and reducing the production cost.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.