CN105639901B - A kind of processing method of princess's drill with ferrule stone - Google Patents

Abstract

A method for processing a princess cut diamond, comprising the following steps: cutting the table top, polishing the square, processing the bottom, dividing the four lower curved sides of the square into eight curved sides, and starting from the middle of the eight curved sides respectively , use 54-60 degrees to polish the angle on both sides, and polish 8 triangular faces on the bottom layer; then, on the edges facing the four corners of the square body at the bottom, use 40.5-41.5 degrees to polish four sharpened surfaces ;Crown processing, using the four arc edges of the table top as the starting edges, grinding four first-layer crowns at 35°-38° toward the waist, leaving the waist 3 and the height of the waist 3 (h ) accounts for 10%-20% of the height (H) of the square. The present invention can increase the finished product rate of diamonds by 10%-20%. Calculated at the current price, each 1-carat diamond can save about 3000-3500 yuan in material cost; the present invention can also improve the light refraction effect of princess cut diamonds, improve The brilliance and fire of diamonds make diamonds shine.

Description

A kind of processing method of princess cut diamond

technical field

The invention relates to a diamond processing method, in particular to a princess cut diamond processing method.

Background technique

Legend has it that the Belgian king specially created a unique and mysterious square diamond for the princess when his beloved daughter was married. "Princess cut diamonds" popular in continental Europe.

The processing method of existing princess cut diamond generally comprises the following steps,

(1) Cutting the desktop, that is, cutting out a basically square desktop on the diamond blank according to the design requirements;

(2) Grinding the cube, grinding the four sides of the square towards the waist respectively, and grinding out the cube used to form the waist;

(3) To process the bottom, use the four lower sides of the cube as the starting sides, and use a grinding angle of 54°-60° (the grinding angle refers to the angle between the bottom surface and the cross-section of the cube) to grind out 4 pieces on the bottom layer. Triangular surface; then on the edge where the 4 triangular surfaces intersect, four sharpened surfaces are polished at 40.5-41.5 degrees; then 24 bottom surfaces are processed multiple times on the edge where the triangular surface and the sharpened surface intersect;

(4) For processing the crown, use the four square sides of the tabletop as the starting sides, and use 35°-38° to punch out four first-layer crowns in the direction of the waist. The square area of the tabletop is reduced to form the first layer of the tabletop. Two squares, and then use the four sides of the second square as the starting sides, and use 26-30 degrees to polish four second-layer crowns, and the area of the second square is further reduced to form the final square table; The intersecting edge of the two-layer crown is the starting edge, and eight triangular facets are symmetrically polished on the second-layer crown.

The above-mentioned traditional processing method is academically known as the square improved sparkling cutting method, that is, the bright processing method, which has been used until today. Grinding in this way can make the polished princess-cut diamonds have beautiful light and fire. However, there are two shortcomings in the princess-cut diamonds polished in this way. One is that the largest size of the diamond cannot be retained. Weight and maximum diameter, the existing one-carat princess cut diamond needs to be polished with 1.4-1.5 carat rough diamonds; the second is when polishing 4 triangular faces on the bottom layer, between two adjacent triangular faces It is not easy to form the intersecting edge of the triangular face. In order to form the intersecting edge between two adjacent triangular faces, sometimes it is required to polish a larger triangular face. the weight of.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide the society with a method that not only maintains the beautiful brilliance and fire of diamonds, but also retains the maximum weight and maximum diameter of diamonds. The intersecting edge between the faces is easier to realize the princess cut diamond processing method.

The technical scheme of the present invention is: design a kind of processing method of princess cut diamond, comprise the steps,

(1) Cutting the desktop, that is, cutting out the desktop on the rough diamond according to the design requirements;

(2) Grinding the square body, grinding it toward the waist on the basis of the tabletop, and grinding out a square body whose four sides are basically arc-shaped to form the waist;

(3) To process the bottom, divide the four lower arc sides of the square into eight arc sides. When grinding, start from the middle of the eight arc sides, and use a grinding angle of 54°-60° to both sides. Grind 8 triangular faces on the bottom layer; then, on the edges facing the four corners of the square body at the bottom, grind four sharpened faces at 40.5-41.5 degrees; 24 bottom surfaces are processed in one time;

(4) For crown processing, use the four arc edges of the tabletop as the starting edges, and polish four first-layer crowns at 35°-38° toward the waist, leaving the waist 3 and waist 3 The height (h) accounts for 10%-20% of the height (H) of the square; the area of the desktop is reduced to form the first square, and then the four upper sides of the first square are used as starting sides, and four are polished at 26-30 degrees. On the second layer of crown, the area of the first square is further reduced to form the final square tabletop; starting from the intersecting edges of two adjacent second layer of crowns, 8 symmetrically polished on the second layer of crown. Triangular facets.

As an improvement to the present invention, each arc is composed of several planes connected end to end.

Due to the adoption of two measures, the present invention can increase the yield of diamonds by 10%-20%. Calculated at the current price, the material cost can be saved by about 3000-3500 yuan for each diamond of about 1 carat; the traditional grinding method requires 1.4 Only about 1.5 carats can be polished into a princess cut diamond of about 1 carat, and the polishing method of the present invention only needs about 1.3 carats to polish a princess cut diamond of about 1 carat; It is designed as a quadrilateral formed by approximately arc-shaped sides, which can increase part of the yield compared with traditional square sides; changing the traditional grinding of 4 triangular faces on the bottom layer to 8 triangular faces can also increase part of the yield; in addition , respectively starting from the middle of the eight arc edges, grinding angles of 54-60 degrees to both sides, and grinding out 8 triangular faces on the bottom layer, which can not only improve the yield, but also facilitate the connection between two adjacent triangular faces. The ribs become easy to form, which is beneficial to subsequent processing; moreover, after changing the traditional 4 triangular faces to 8 triangular faces, it can also improve the light refraction effect of the princess cut diamond, improve the brightness and fire of the diamond, and make the diamond more beautiful. Shine brightly.

Description of drawings

Fig. 1 is the planar structure schematic diagram of princess cut diamond polished desktop of the present invention.

FIG. 2 is a schematic plan view of the top view of FIG. 1 .

Fig. 3 is a schematic plan view of the polished square of the princess cut diamond of the present invention.

FIG. 4 is a schematic plan view of the top view of FIG. 3 .

Fig. 5 is a schematic plan view of the bottom surface of the princess cut diamond of the present invention at the beginning of grinding.

Fig. 6 is a schematic plan view of the bottom view of Fig. 5 .

Fig. 7 is a schematic plan view of the polished eight triangular faces of the princess cut diamond of the present invention.

Fig. 8 is a schematic plan view of the bottom view of Fig. 7 .

Fig. 9 is a schematic plan view of the surface and the bottom surface of the princess cut diamond of the present invention after they have been successfully polished.

Fig. 10 is a schematic plan view of the bottom view of Fig. 9 .

Fig. 11 is a schematic plan view of the first layer of crown grinding of the princess cut diamond of the present invention.

FIG. 12 is a schematic plan view of the top view of FIG. 11 .

Fig. 13 is a schematic plan view of the second crown of the princess cut diamond of the present invention after polishing.

FIG. 14 is a schematic plan view of the top view of FIG. 13 .

Fig. 15 is a schematic plan view of the polished triangular facets of the princess cut diamond of the present invention.

FIG. 16 is a schematic plan view of the top view of FIG. 15 .

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

The present invention discloses a kind of processing method of princess cut diamond to the society, comprises the following steps,

Please refer to Figure 1 and Figure 2. Cutting the desktop means cutting out the desktop 2 on the blank 1 according to the design requirements. Since the surface of the blank 1 is irregular, the tabletop after cutting is also an irregular square ( See Figure 2);

Please refer to Fig. 3 and Fig. 4, polish the quadrilateral body, grind toward the waist direction on the basis of desktop 2, and polish the quadrilateral body that is used to form the quadrilateral arc edge 21 of the four sides of the waist basically; In the present embodiment, each arc The shape side 21 is made up of several planes 22 connected end to end, so that the top view of the desktop 2 appears to be a tetrahedron formed by four arc sides, which can retain the weight of the diamond to the greatest extent, and does not affect the further development of the subsequent crown surface. polished.

Please refer to Fig. 5 to Fig. 8, process the bottom, divide the four lower arc sides 21 of the square into eight arc sides 23 in the middle, and when polishing, use the middle part of the eight arc sides 23 as the starting point respectively, and use 54 degrees to both sides -60 degree of grinding angle, grinding out 8 triangular faces 24 on the bottom layer (wherein, what Fig. 5 and Fig. 6 show is the state when only one triangular face 24 has been polished, all the triangular faces shown in Fig. 7 and Fig. 8 Surfaces 24 and 24 are all completed), this grinding method can improve the yield of diamonds on the one hand, and on the other hand can make the edges between two adjacent triangular faces easy to form; On the edge, use 40.5-41.5 degrees to grind out four pick-up surfaces 25; then process 24 bottom surfaces 26 multiple times on the edge where the triangle surface 24 and pick-up surface 25 intersect (see Figure 9 and Figure 10) ;

Please refer to Fig. 11 and Fig. 12, crown processing, take the four arc sides 21 of the quadrangular body of the desktop as the starting sides, polish four first-layer crown surfaces 31 toward the waist at 35°-38°, and leave Waist 3, the height (h) of waist 3 accounts for 10%-20% of the height (H) of the square; the area of the desktop is reduced to form the first square 32;

Please refer to Fig. 13 and Fig. 14, and then take the four upper sides 33 of the first square 32 as starting sides, and polish four second-layer crowns 34 at 26-30 degrees, and the area of the first square 32 is further reduced to form the final Square desktop 35;

Referring to FIG. 15 and FIG. 16 , starting from the intersecting edges of two adjacent second-layer crown surfaces 34 , eight triangular facets 36 are respectively symmetrically polished on the second-layer crown surfaces 34 .

Claims (1)

1. a kind of processing method of princess's drill with ferrule stone, comprises the steps,

（1）, cut off desktop, i.e., according to design requirement bore embryo on cut off out desktop；

（2）, the cubic body of polishing, polished to waist direction based on desktop, polished basic for forming four sides of waist Cubic body for arc；

（3）, processing bottom, when four arc lowers of cubic body are divided in meeting eight arcs, during polishing, respectively with eight arcs The middle part on side is starting point, to both sides with 54 degree of -60 degree grinding angle, polish 8 triangular facets on bottom；Again bottom against On the rib at four angles of cubic body, four are polished with 40.5 degree of -41.5 degree and take off sharp face；Intersected with sharp face is taken off with triangular facet again Rib on repeatedly process 24 round floors；

（4）, bizet processing, respectively with four arcs of the cubic body of desktop while as while, spent to waist direction with 35 degree -38 and beaten Four ground floor crowns are ground, and reserves waist（3）, waist（3）Height（h）Account for cubic body height（H）10%-20%； The area of desktop reduces to form the first square, then is spent with 26 degree -30 with first foursquare four tops as side is played respectively Four second layer crowns are polished, the first foursquare area further reduces to form final square desktop；With two neighboring The intersecting rib of second layer crown has been side, and be respectively symmetrically on second layer crown polish 8 triangular facets.