CN115026960A - Processing method of overflow brick deep groove - Google Patents

Abstract

The invention relates to the technical field of glass substrate production, and discloses a method for processing an overflow brick deep groove, which comprises the following steps: clamping and fixing the overflow brick blank on a working table of a machine tool, so that the bottom surface of a reserved groove on the overflow brick blank is perpendicular to the working table of the machine tool; the milling cutter is adopted to process a first side wall which is vertical to a working table top in the preformed groove in sequence, the bottom surface of the preformed groove, a lower side wall and an upper side wall, wherein a rotation center line of the milling cutter and the first side wall of the preformed groove form a first given included angle in the horizontal direction, a rotation center line of the milling cutter and the bottom surface of the preformed groove form a second given included angle in the vertical direction, a rotation center line of the milling cutter and the lower side wall and the upper side wall form a third given included angle in the vertical direction, and the milling cutter continuously provides cooling liquid for a cutting edge of the milling cutter through a plurality of cooling pipelines of a machine tool in the milling process. The overflow brick deep groove processing method provided by the invention reduces the impact on the overflow brick blank in the milling process of the milling cutter and avoids the overflow brick blank from cracking.

Description

Processing method of overflow brick deep groove

technical field

The invention relates to the technical field of glass substrate production, in particular to a deep groove processing method for overflow bricks.

Background technique

The overflow brick is a key component in the forming process of the overflow down-draw method to produce glass substrates. The specific process is that the molten glass overflows from the tank of the overflow brick, passes through the surfaces of both sides of the overflow brick, and reaches the brick of the overflow brick. The tips meet to form a glass substrate. The material of overflow brick is dense zircon similar to zirconia, which has superhard and brittle material properties.

With the upgrading of the overflow brick design of the LCD glass substrate production line, in order to meet the needs of the production line, the design of the overflow brick needs to have a curved deep groove. However, because the overflow brick is made of super-hard and brittle material, if the general deep groove machining method is used to process the deep groove on the overflow brick blank, the overflow brick blank will be cracked and the workpiece will be scrapped, which cannot be completed. processing tasks.

Therefore, there is an urgent need for a new machining method to machine deep grooves on overflow bricks.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to solve the problem that the overflow brick blanks are easily cracked during the process of machining the deep groove on the overflow brick in the prior art.

In order to achieve the above purpose, the present invention provides a method for processing a deep groove of an overflow brick, which is used to process the reserved groove on the overflow brick blank to a deep groove of a required specification, and the reserved groove has a bottom surface and three The side wall, the deep groove processing method of the overflow brick comprises:

The overflow brick blank is clamped and fixed on the work surface of the machine tool, so that the bottom surface of the reserved groove is perpendicular to the work surface of the machine tool; after the clamping, the three side walls of the reserved groove are respectively the No. 1 surface perpendicular to the work surface. a side wall, a lower side wall close to the work surface and an upper side wall away from the work surface;

A milling cutter is used to process the first side wall of the reserved slot, the bottom surface of the reserved slot, the lower side wall and the upper side wall in sequence; The first side wall of the milling cutter forms a first given angle in the horizontal direction, the rotation centerline of the milling cutter and the bottom surface of the reserved groove form a second given angle in the vertical direction, and the rotation of the milling cutter The center line and the lower side wall and the upper side wall of the reserved groove form a third given angle in the vertical direction;

During the milling process of the milling cutter, cooling liquid is continuously supplied to the cutting edge of the milling cutter through a plurality of cooling pipes of the machine tool.

Specifically, the processing of the first side wall of the reserved groove includes:

Adjusting the rotation center line of the milling cutter to form a first given angle with the first side wall in the horizontal direction;

The milling cutter feeds from the intersection of the first side wall, the bottom surface of the reserved groove and the lower side wall;

The milling cutter cuts on the first side wall in a "Z"-shaped cutting path on the first side wall.

Specifically, the processing of the bottom surface of the reserved groove includes:

Adjust the rotation center line of the milling cutter to form a second predetermined angle with the bottom surface of the reserved groove in the vertical direction;

The milling cutter feeds from the intersection of the bottom surface of the reserved groove and the lower side wall;

The milling cutter cuts from the lower side wall to the upper side wall on the bottom surface of the reserved groove.

Specifically, the lower side wall of the processing reserved groove includes:

Adjust the rotation center line of the milling cutter to form a third predetermined angle with the lower side wall in the vertical direction;

The milling cutter feeds from the intersection of the lower side wall, the first side wall and the bottom surface of the reserved groove;

The milling cutter cuts in a direction from the bottom of the reserved groove to the groove of the reserved groove on the lower side wall.

Specifically, the upper side wall of the processing reserved groove includes:

Adjust the clamping and fixing direction of the overflow brick blank, so that the upper side wall of the reserved groove is parallel and close to the work table, and the lower side wall of the reserved groove is far away from the work table;

Adjust the rotation center line of the milling cutter to form a third predetermined angle with the lower side wall in the vertical direction;

The milling cutter feeds from the intersection of the upper side wall, the first side wall and the bottom surface of the reserved groove;

The milling cutter cuts along the direction from the bottom of the reserved groove to the groove of the reserved groove on the upper side wall.

Specifically, the plurality of cooling pipes are evenly distributed along the circumferential direction of the milling cutter.

Specifically, the surface of the cutting edge of the milling cutter is electroplated with diamond particles.

Specifically, the method of clamping and fixing the overflow brick blank on the work surface of the machine tool includes:

The overflow brick blanks are clamped and fixed on the work surface of the machine tool through the pressing plate.

Specifically, a protective pad is provided between the pressing plate and the overflow brick blank.

Specifically, a zirconia spacer block is arranged between the overflow brick blank and the work surface.

In the method for processing overflow brick deep grooves provided by the present invention, the overflow brick blank is fixed on the working table, so that the bottom surface of the reserved groove on the overflow brick blank is set perpendicular to the working table, and the processing is performed according to the first side wall, The milling process is completed in the order of the bottom surface, lower side wall and upper side wall of the reserved slot. During the machining process, the rotation center line of the milling cutter is adjusted to the first side wall, the bottom surface of the reserved slot, the lower side wall and the upper side wall respectively. The included angle in the corresponding direction reduces the impact on the overflow brick blank during the milling process of the milling cutter and avoids the overflow brick blank from cracking.

Additional features and advantages of embodiments of the present invention are described in detail in the detailed description section that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the embodiments of the present invention, but do not limit the embodiments of the present invention. In the attached image:

1 is a schematic structural diagram of an overflow brick blank in a method for processing an overflow brick deep groove provided by an embodiment of the present invention;

Fig. 2 is the schematic diagram of the milling operation of milling cutter on the first side wall of the overflow brick blank in the overflow brick deep groove processing method of Fig. 1;

Fig. 3 is the schematic diagram of milling cutter on the bottom surface of the reserved groove of the overflow brick blank in the overflow brick deep groove processing method of Fig. 1;

FIG. 4 is a schematic diagram of a milling pass of a milling cutter on the lower side wall of an overflow brick blank in the method for machining a deep groove of an overflow brick in FIG. 1 .

Description of reference numerals

1- overflow brick blank; 11- first side wall; 12- bottom surface of reserved groove; 13- lower side wall; 14- upper side wall.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

In the embodiments of the present invention, unless otherwise stated, the directional words used such as "upper, lower, top, bottom" are generally for the directions shown in the drawings or for vertical, vertical or A word describing the mutual positional relationship of each component in the direction of gravity.

Fig. 1 is the structural representation of the overflow brick blank in the overflow brick deep groove processing method; Fig. 2 is the milling cutter schematic diagram of the first side wall of the overflow brick blank in the overflow brick deep groove processing method; Fig. 3 is the schematic diagram of milling cutter on the bottom surface of the reserved groove of the overflow brick blank in the overflow brick deep groove processing method; Fig. 4 is the milling cutter in the overflow brick blank processing method in the overflow brick deep groove processing method. Schematic representation of the milling pass for the lower side wall.

As shown in FIGS. 1 to 4 , the present invention provides a method for processing a deep groove of an overflow brick, which is used to process the reserved groove on the overflow brick blank to a deep groove of a required specification, and the reserved groove has a bottom surface and a Three side walls, the deep groove processing method of the overflow brick includes:

The overflow brick blank is clamped and fixed on the work surface of the machine tool, so that the bottom surface of the reserved groove is perpendicular to the work surface of the machine tool; after the clamping, the three side walls of the reserved groove are respectively the No. 1 surface perpendicular to the work surface. a side wall, a lower side wall close to the work surface and an upper side wall away from the work surface;

A milling cutter is used to process the first side wall of the reserved slot, the bottom surface of the reserved slot, the lower side wall and the upper side wall in sequence; The first side wall of the milling cutter forms a first given angle in the horizontal direction, the rotation centerline of the milling cutter and the bottom surface of the reserved groove form a second given angle in the vertical direction, and the rotation of the milling cutter The center line and the lower side wall and the upper side wall of the reserved groove form a third given angle in the vertical direction;

During the milling process of the milling cutter, cooling liquid is continuously supplied to the cutting edge of the milling cutter through a plurality of cooling pipes of the machine tool.

In the method for deep groove processing of overflow bricks provided by the present invention, the material of the overflow brick blank 1 to be processed is usually dense zircon, which is a superhard and fragile material, and the impact force of the tool on the workpiece is too large during the processing. It can cause the workpiece to crack. In order to avoid cracking during the processing of the overflow brick blank 1, in the process of processing the reserved groove on the overflow brick blank 1 to the deep groove of the required specification, first remove the overflow brick blank. Part 1 is clamped and fixed on the work surface of the machine tool, as shown in Figure 2, so that the bottom surface 12 of the reserved groove of the overflow brick blank part 1 is perpendicular to the work surface, and the overflow brick after the initial fixed overflow brick blank part 1 is defined. The side of the blank 1 that is attached to the work table is the B side, and the side that is far from the B work table and parallel to the B side is the A side. After the overflow brick blank 1 is clamped and fixed, the first side of the reserved groove is processed first. Wall 11, adjust the first given angle between the rotation center line of the milling cutter and the first side wall 11 in the horizontal direction to be between 1 degree and 9 degrees, so that during the cutting process, the milling cutter will not touch the first side wall 11. The impact force in the vertical direction is decomposed, reducing the impact of the milling cutter on the first side wall 11, preventing the overflow brick blank 1 from cracking, then milling the bottom surface 12 of the reserved slot, and adjusting the rotation centerline of the milling cutter to match the The second given angle of the bottom surface 12 of the reserved groove in the vertical direction of the vertical horizontal plane is between 0 degrees and 30 degrees, which can also reduce the impact force of the milling cutter on the bottom surface 12 of the reserved groove, and then milling close to B When milling the lower side wall 13 and the upper side wall 14, adjust the rotation center line of the milling cutter to be vertically aligned with the lower side wall 13 and the upper side wall 14 The third given angle in the straight direction is between 1 degree and 15 degrees, thereby reducing the impact force of the milling cutter on the upper side wall 13 and the lower side wall 14. In the process of the reserved groove on the overflow brick with super hard material, in order to avoid the overflow brick blank 1 from cracking, adjust the angle between the milling cutter rotation center line and the bottom surface and side wall of the reserved groove of the overflow brick, so that the The impact of the milling cutter on the overflow brick blank 1 during the milling process is reduced, and the overflow brick blank 1 is prevented from cracking.

In order to prevent the chips generated during the processing of the overflow brick blank 1 from causing the workpiece to crack, the processing of the first side wall 11 of the reserved groove includes: adjusting the rotation centerline of the milling cutter to be consistent with the first side wall 11 of the milling cutter. A side wall 11 forms a first given angle in the horizontal direction; the first given angle is between 1 degree and 9 degrees. The intersection of the bottom surface 12 and the lower side wall 13 is fed; the milling cutter cuts the first side wall 11 on the first side wall 11 with a "Z"-shaped cutting route. On the first side wall 11, the milling cutter feeds from the intersection of the first side wall 11, the bottom surface 12 of the reserved groove and the lower side wall 13, and then cuts upward toward the upper side wall 14, and cuts to the specified distance from the upper side wall 14. After the position, the milling cutter cuts in the direction of the lower side wall 13 in the reverse direction, so that the first side wall 11 is cut in a "Z" shape. Between 200mm/min-2000mm/min, the feed rate is between 0.1mm-0.5mm, as shown in Figure 2, the milling cutter completes the first side by milling the first side wall 11 according to the "Z"-shaped cutting route Milling of the wall 11, so that during the machining process, the chips generated by the milling fall on the lower side wall 13, so as to prevent the chips from affecting the safety of milling.

As shown in FIG. 3 , the processing of the bottom surface 12 of the reserved groove includes: adjusting the rotation centerline of the milling cutter to form a second predetermined angle with the bottom surface 12 of the reserved groove in the vertical direction; The milling cutter feeds from the intersection of the bottom surface 12 of the reserved slot and the lower side wall 13 ; the milling cutter moves from the lower side wall 13 to the The upper side wall 14 is cut in the direction. The second given angle is between 0 degrees and 30 degrees. When milling the bottom surface 12 of the reserved groove, the milling cutter feeds from the intersection of the deepest part of the reserved groove and the lower side wall 13. The cutting route is cut from the lower side wall 13 toward the upper side wall 14, so as to complete the processing of the bottom surface 12 of the reserved groove. During the cutting process, the milling cutter speed is set between 3000rev/min-6000rev/min, and the feed speed is Between 300mm/min-1500mm/min, the feed rate is between 0.1mm-0.3mm.

As shown in FIG. 4 , the processing of the lower side wall 13 of the reserved groove includes: adjusting the rotation center line of the milling cutter to form a third predetermined angle with the lower side wall 13 in the vertical direction; The milling cutter feeds from the intersection of the lower side wall 13 with the first side wall 11 and the bottom surface 12 of the reserved groove; The bottom surface 12 of the reserved groove is cut in the direction of the groove of the reserved groove. The third given angle is between 1 degree and 15 degrees. After the milling cutter feeds from the intersection of the lower side wall 13 and the first side wall 11 and the bottom surface 12 of the reserved groove, each cutter of the milling cutter is cut during the cutting process. The cutting route is cut from the intersection of the lower side wall 13 and the bottom surface 12 of the reserved groove toward the groove edge of the reserved groove to avoid the accumulation of chips on the lower side wall 13. During the cutting process, the milling cutter speed is set at 3000rev/min-6000rev /min, the feed speed is between 300mm/min-1500mm/min, and the feed amount is between 0.2mm-0.5mm.

When milling the upper side wall 14, the processing of the upper side wall 14 of the reserved groove includes: adjusting the clamping and fixing direction of the overflow brick blank 1 so that the upper side wall 14 of the reserved groove is parallel and parallel. Approach the worktable and keep the lower side wall 13 of the reserved groove away from the worktable; adjust the rotation centerline of the milling cutter to be the third given vertical direction with the lower sidewall 13 included angle; the milling cutter feeds from the intersection of the upper side wall 14 and the first side wall 11 and the bottom surface 12 of the reserved groove; The bottom surface 12 of the reserved groove is cut in the direction of the groove of the reserved groove. Change the clamping direction of the overflow brick blank 1, so that the A side of the overflow brick blank 1 fits the work table, and adjust the third given angle between 1 degree and 15 degrees. The cutting route of one cutter cuts from the intersection of the upper side wall 14 and the bottom surface 12 of the reserved groove toward the groove edge of the reserved groove, so as to avoid the accumulation of chips on the upper side wall 14, and the rotation speed of the milling cutter is set at 3000rev/min-6000rev during cutting /min, the feed speed is set between 300mm/min-1500mm/min, and the feed amount is set between 0.2mm-0.5mm.

In the process of milling the first side wall 11 , the bottom surface 12 of the reserved groove, the upper side wall 13 and the lower side wall 14 , it also includes cleaning the first side wall 11 and the bottom surface 12 of the reserved groove, the upper side wall 13 and the lower side wall 14 . The intersection of the side wall 14 and the intersection of the bottom surface 12 of the reserved groove for root cleaning and the upper side wall 13 and the lower side wall 14, during the root cleaning process, the milling cutter speed is set between 3000rev/min-6000rev/min , the feed speed is set between 100mm/min-1500mm/min, and the feed amount is set between 0.1mm-0.3mm.

During the milling process, in order to cool down the cutting edge of the milling cutter and quickly flush away the chips generated during the cutting process, the plurality of cooling pipes are evenly distributed along the circumferential direction of the milling cutter, and pass through the plurality of cooling pipes that are evenly distributed in the circumferential direction of the milling cutter. The cooling liquid is provided to the cutting edge of the milling cutter, so that during the machining process, the cooling liquid can quickly flush away the generated chips while cooling the cutting edge of the milling cutter to avoid chip accumulation.

In order to ensure that the milling cutter can cut one overflow brick blank made of superhard material, the surface of the cutting edge of the milling cutter is electroplated with diamond particles.

In one embodiment, in order to clamp and fix the overflow brick blank 1 on the worktable, the method of clamping and fixing the overflow brick blank 1 on the worktable of the machine tool includes: pressing the overflow brick through a pressing plate. The brick blank 1 is clamped and fixed on the work surface of the machine tool. In order to avoid scratching the surface of the overflow pile blank 1 when the pressure plate compresses the overflow brick blank 1 , a protective pad is provided between the pressure plate and the overflow brick blank 1 . The protective pad includes two layers, one is made of polyurethane and the other is made of nylon 66, and the protective pad is formed by stacking the polyurethane layer and the nylon 66 layer. When milling the reserved groove on the overflow brick blank 1, in order to prevent the overflow blank 1 from cracking due to the impact of the milling cutter, a zirconia spacer is arranged between the overflow brick blank 1 and the work surface. The zirconia spacer is similar in material to the overflow brick blank 1, and the zirconia spacer plays a better buffering role when the overflow brick blank 1 is impacted to avoid damage to the overflow brick blank 1.

In the method for processing overflow brick deep grooves provided by the present invention, the overflow brick blank is fixed on the working table, so that the bottom surface of the reserved groove on the overflow brick blank is set perpendicular to the working table, and the processing is performed according to the first side wall, The milling process is completed in the order of the bottom surface, lower side wall and upper side wall of the reserved slot. During the machining process, the rotation center line of the milling cutter is adjusted to the first side wall, the bottom surface of the reserved slot, the lower side wall and the upper side wall respectively. The included angle in the corresponding direction reduces the impact on the overflow brick blank during the milling process of the milling cutter and avoids the overflow brick blank from cracking.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are inconsistent. In order to avoid unnecessary repetition, the present invention provides The combination method will not be specified otherwise.

Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make the single chip, chip or processing The processor (processor) executes all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

In addition, various different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims (10)

1. an overflow brick deep groove processing method is used for processing the reserved groove on the overflow brick blank to the deep groove of the required specification, and the reserved groove has a bottom surface and three side walls, and is characterized in that, The method for processing overflow brick deep grooves includes: The overflow brick blank is clamped and fixed on the work surface of the machine tool, so that the bottom surface of the reserved groove is perpendicular to the work surface of the machine tool; after the clamping, the three side walls of the reserved groove are respectively the No. 1 surface perpendicular to the work surface. a side wall, a lower side wall close to the work surface and an upper side wall away from the work surface; A milling cutter is used to process the first side wall of the reserved slot, the bottom surface of the reserved slot, the lower side wall and the upper side wall in sequence; The first side wall of the milling cutter forms a first given angle in the horizontal direction, the rotation centerline of the milling cutter and the bottom surface of the reserved groove form a second given angle in the vertical direction, and the rotation of the milling cutter The center line and the lower side wall and the upper side wall of the reserved groove form a third given angle in the vertical direction; During the milling process of the milling cutter, cooling liquid is continuously supplied to the cutting edge of the milling cutter through a plurality of cooling pipes of the machine tool. 2. overflow brick deep groove processing method according to claim 1, is characterized in that, described processing the first side wall of reserved groove, comprises: Adjusting the rotation center line of the milling cutter to form a first given angle with the first side wall in the horizontal direction; The milling cutter feeds from the intersection of the first side wall, the bottom surface of the reserved groove and the lower side wall; The milling cutter cuts on the first side wall in a "Z"-shaped cutting path on the first side wall. 3. overflow brick deep groove processing method according to claim 2, is characterized in that, described processing the bottom surface of reserved groove, comprises: Adjust the rotation center line of the milling cutter to form a second predetermined angle with the bottom surface of the reserved groove in the vertical direction; The milling cutter feeds from the intersection of the bottom surface of the reserved groove and the lower side wall; The milling cutter cuts from the lower side wall to the upper side wall on the bottom surface of the reserved groove. 4. overflow brick deep groove processing method according to claim 2, is characterized in that, described processing the lower side wall of reserved groove, comprises: Adjust the rotation center line of the milling cutter to form a third predetermined angle with the lower side wall in the vertical direction; The milling cutter feeds from the intersection of the lower side wall, the first side wall and the bottom surface of the reserved groove; The milling cutter cuts in a direction from the bottom of the reserved groove to the groove of the reserved groove on the lower side wall. 5. overflow brick deep groove processing method according to claim 2, is characterized in that, described processing the upper side wall of reserved groove, comprises: Adjust the clamping and fixing direction of the overflow brick blank, so that the upper side wall of the reserved groove is parallel and close to the work table, and the lower side wall of the reserved groove is far away from the work table; Adjust the rotation center line of the milling cutter to form a third predetermined angle with the lower side wall in the vertical direction; The milling cutter feeds from the intersection of the upper side wall, the first side wall and the bottom surface of the reserved groove; The milling cutter cuts along the direction from the bottom of the reserved groove to the groove of the reserved groove on the upper side wall. 6 . The deep groove processing method for overflow bricks according to claim 1 , wherein the plurality of cooling pipes are evenly distributed along the circumferential direction of the milling cutter. 7 . 7 . The deep groove processing method for overflow bricks according to claim 1 , wherein the surface of the cutting edge of the milling cutter is electroplated with diamond particles. 8 . 8. The overflow brick deep groove processing method according to claim 1, characterized in that, said clamping and fixing the overflow brick blank on the work surface of the machine tool, comprising: The overflow brick blanks are clamped and fixed on the work surface of the machine tool through the pressing plate. 9 . The deep groove processing method for overflow bricks according to claim 8 , wherein a protective pad is provided between the pressing plate and the overflow brick. 10 . 10 . The overflow brick deep groove processing method according to claim 8 , wherein a zirconia spacer block is arranged between the overflow brick blank and the work surface. 11 .

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