CN117584657A - Template ruler for assisting in drawing perspective effect graphs of different cut-type faceted precious stones - Google Patents

Abstract

The utility model discloses a template ruler for assisting in drawing perspective effect figures of precious stones with different cut facets, wherein a plurality of step drawing areas are arranged on a template ruler body, each step drawing area corresponds to one precious stone size, three template-shaped grooves are arranged in each step drawing area, the three template-shaped grooves correspond to precious stones with the same shape and size, and the precious stone cut can be any one of the precious stone cut circulated in the market; among three template-shaped grooves in one step drawing area, a first template-shaped groove can assist in drawing the outline of the precious stone; the second template-shaped groove can assist in drawing a connecting line of the kite surface and the upper waist facet of the precious stone under a three-dimensional view angle; the third template-shaped groove can assist in drawing the connecting line of the kite face and the star facet of the precious stone under the three-dimensional view angle. The template ruler provided by the application can be used for rapidly and effectively drawing perspective effect diagrams of different faceted cut precious stones with perspective effects, and the problems of precious stone inclination, asymmetry, proportion error, perspective error and the like are avoided.

Description

Template ruler for assisting in drawing perspective effect graphs of different cut-type faceted precious stones

Technical Field

The application relates to the technical field of jewelry design and drawing, in particular to a template ruler capable of assisting jewelry design drawing, and specifically relates to a template ruler for assisting drawing perspective effect diagrams of different cut-type faceted precious stones.

Background

Jewelry designers often use stone collocations of different sizes and different cut types to design jewelry pieces, including a variety of differently cut facet stones, such as emerald, oval, round, etc.

Faceted precious stones typically have a variety of facets such as a table, star facet, kite facet, and a girdle facet. Thus, the drawing process of a faceted gemstone is complex and time consuming, especially when the drawing gemstone has a perspective effect, and the drawing difficulty of the perspective view is much greater than the front view of the drawing faceted gemstone.

When the drawing gemstone has perspective effect, not only each facet and proportion of the gemstone are drawn, but also the perspective effect of the whole gemstone is paid attention to, and a plurality of auxiliary lines are required to be drawn in the conventional drawing process so as to determine the position, proportion, size and perspective effect of each facet of the gemstone. The primary painting process requires about 8-20 minutes, the professional jewelry designer requires about 5-10 minutes, and the problems of inaccurate perspective effect, inclination, imbalance of proportion, dirty and unclear picture after the auxiliary line is wiped after the facet is drawn are easily caused in the drawing process.

In particular, drawing a hand drawing of a ring, it is common to draw a perspective view of the ring to enhance the stereoscopic effect of the ring. Currently, the jewellery drawing template ruler in the market only has the simple outer contours of jewels with various basic shapes. When drawing the facet with the perspective effect of the precious stone with different cut types, the center point of the precious stone needs to be drawn and positioned, and a plurality of drawing tools such as a ruler, a protractor and the like are used for assisting in drawing straight auxiliary lines which are mutually perpendicular, and inner auxiliary lines which are the same as the outline of the precious stone. The inner auxiliary line is drawn by paying attention to the proportional relation and perspective relation between the measurement and the outline of the gemstone, and generally the inner auxiliary line determines the table of the gemstone and has a size not less than half of the outline of the gemstone. Of course, the facet gem mapping method and table scale of different cut types are slightly different.

When the facet of the precious stone perspective effect is drawn, a plurality of straight auxiliary lines are generally drawn according to each internal auxiliary line and perspective relation, so that connection points among the kite face, the star facet and the upper waist facet of the precious stone table surface are determined, and then the connection points are connected according to a certain rule, so that each facet of the precious stone with different cut facets is drawn. In the drawing process, the problems of inclination of the auxiliary line position, large perspective deviation of the internal auxiliary line and the like often occur.

Especially for beginners, it is very difficult to draw the facet with the precious stone perspective effect, and the problems of connecting the connecting points in a wrong way, inaccuracy, proportion and the like often occur because the beginners cannot understand the precious stone facet in place. The conventional jewelry drawing ruler is mainly used for drawing the outline of the shape of a precious stone, but not for drawing a faceted precious stone with perspective effect, does not have the function of assisting in rapidly drawing different facets of the precious stone with perspective effect, and is used for determining connection points of different facets by drawing a plurality of straight auxiliary lines and internal auxiliary lines with different angles in the process of drawing different facets. In addition, the basic length-width ratio of part of the template ruler has large difference, an inner auxiliary line cannot be drawn by a better auxiliary designer, after facet drawing is finished, useless auxiliary lines are required to be rubbed off by using an eraser, and the problems of stains, obvious wiping marks, unclean pictures and the like are greatly likely to occur in the process due to the fact that the auxiliary lines are numerous and complicated; meanwhile, the existing template ruler has relatively single function, can not assist in drawing precious stone facets with perspective effect, and can not meet the design requirement of the facet precious stone with perspective effect required in jewelry. Therefore, a new technical solution is needed to solve the problems existing in the prior art.

Disclosure of Invention

The utility model provides a template chi of supplementary drawing different cut facet precious stone perspective effect graphs for template chi among the solution prior art can't assist the precious stone facet that draws has perspective effect, can't satisfy the design demand problem of the facet precious stone that needs to have perspective effect in the jewelry.

In order to achieve the above object, the present application provides the following technical solutions:

the application provides a template ruler for assisting in drawing perspective effect figures of different cut-type faceted precious stones, which comprises a template ruler body, wherein a plurality of step drawing areas are arranged on the template ruler body;

three template-shaped grooves are arranged in each step drawing area, the three template-shaped grooves correspond to precious stones with the same shape and size, a first template-shaped groove in the three template-shaped grooves is a hollowed-out groove, and the outline of the groove edge of the first template-shaped groove coincides with the outline of the precious stone under a three-dimensional view angle; a second template-shaped groove in the three template-shaped grooves is a hollow groove, the groove edge profile of the second template-shaped groove is coincident with the profile line formed by the connecting line of the kite surface and the upper waist facet of the precious stone under the three-dimensional view angle, and the periphery of the groove edge profile of the second template-shaped groove is printed with an auxiliary outer profile line which is identical with the groove edge profile of the first template-shaped groove; a third template-shaped groove of the three template-shaped grooves comprises an auxiliary contour line which is printed on the template ruler body and has the same shape as the second template-shaped groove, a hollowed groove is arranged in the auxiliary contour line, and the contour of the groove edge of the hollowed groove coincides with the contour line formed by the connecting line of the kite surface and the star facet of the precious stone under the three-dimensional view angle;

the step drawing units respectively correspond to precious stones with the same shape and different sizes;

the template ruler body is of a rectangular transparent platy structure, and a 45-degree included angle is formed between the central axis of the outer contour line of the precious stone under the three-dimensional visual angle and the long side or the wide side of the template ruler body.

In the above technical scheme, a reference auxiliary line is further printed between the outline of the edge of the second template-shaped groove and the auxiliary outline printed on the periphery of the second template-shaped groove, and the reference auxiliary line is used for assisting in determining the connecting line of the kite surface and the upper waist facet of the gemstone under the stereoscopic viewing angle.

Further, three stencil-shaped grooves in one of the step drawing areas are arranged in a row on the stencil ruler body; and a plurality of step drawing areas are arranged in a row along the extending direction of any side of the template ruler body.

Further, the first template forming groove, the second template forming groove and the third template forming groove in the step drawing area are arranged in a row from top to bottom along the extending direction of the broadside of the template ruler body.

Further, three step indication marks are printed in one step drawing area close to the edge of the template ruler body, and the three step indication marks correspond to three template-shaped grooves in the step drawing area one by one.

Further, the bottom of each mastering groove is printed with dimension information of the gemstone corresponding to the mastering groove.

Further, scale marks are arranged on the edge of at least one edge of the template ruler body; the 0 scale of the scale mark is positioned at the corner of the template ruler body.

Further, the gem cut corresponding to the template-shaped groove on the template ruler body comprises any one of a round type, an elliptic type, an emerald type, a pad type, a pillow type, an olive type, a water drop type and a heart type.

Compared with the prior art, the application has the following beneficial effects:

1. the template ruler for assisting in drawing the perspective effect graphs of the precious stones with the different cut facets is provided with a plurality of step drawing areas, the number of the step drawing areas corresponds to the number of the step drawing areas of the precious stones commonly used in the market, each step drawing area is internally provided with three template-shaped grooves, the three template-shaped grooves correspond to the precious stones with the same shape and size, and the precious stone cut can be any one of round, elliptic, emerald, pad, pillow, olive, water drop, heart and the like flowing precious stone cut in the market; taking a step drawing area as an example, the outline of the groove edge of the first template-shaped groove in the three template-shaped grooves arranged in the step drawing area is overlapped with the outline of the precious stone under the three-dimensional view angle, so that the outline of the precious stone can be drawn in an auxiliary way; the outline of the groove edge of the second template-shaped groove in the three template-shaped grooves can assist in drawing the connecting line of the kite surface and the upper waist facet of the precious stone under the three-dimensional view angle; the third template-shaped groove in the three template-shaped grooves can assist in drawing the connecting line of the kite face and the star facet of the gemstone under the three-dimensional view angle. Therefore, the template ruler provided by the application can be used for rapidly and effectively drawing perspective effect graphs of different faceted cut precious stones with perspective effects, and the problems of precious stone inclination, asymmetry, wrong faceted proportion, inaccuracy, perspective error and the like are avoided; the design method is convenient for jewelry designers to design faceted gemstones with different sizes and cut types, and solves the problem that a template ruler in the prior art cannot assist in drawing a precious stone facet with a perspective effect and cannot meet the design requirement of the faceted precious stone with the perspective effect in jewelry.

2. The utility model provides an it is supplementary to draw the different cut facet precious stone perspective effect figures's of different cut template chi has still set up the scale mark, consequently still possesses measurement, location, the supplementary function of marking off of general ruler, and template chi overall function is various, makes things convenient for jewelry designer and beginner to draw the perspective effect figures of different cut facet precious stones, and is practical and effectively to save the drawing time, reduces the degree of difficulty of drawing.

3. The step indication mark is arranged on the template ruler for assisting in drawing the perspective effect diagrams of the different cut-type precious stones, the step reminding function is achieved, the operation and the use are easy, the steps are clear, and the design drawing efficiency can be effectively improved.

4. The template ruler for auxiliary drawing of different cut-type faceted precious stone perspective effect figures is rectangular, the whole volume of the ruler can be reduced on the premise that a plurality of template-type grooves distributed in a strip shape are arranged in a most suitable mode, the template ruler is convenient to carry, the corresponding precious stone is various in size and cut-type, the design and use are convenient, and the accuracy of drawing of the size and different cut-type facets can be facilitated for a novice.

5. The template ruler for assisting in drawing different cut-type faceted precious stone perspective effect figures can reduce drawing of auxiliary lines, and avoids situations that images are stained and paper is damaged due to large wiping force.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. It should be understood that the specific shape and configuration shown in the drawings should not be considered in general as limiting upon the practice of the present application; for example, based on the technical concepts and exemplary drawings disclosed herein, those skilled in the art have the ability to easily make conventional adjustments or further optimizations for the add/subtract/assign division, specific shapes, positional relationships, connection modes, dimensional scaling relationships, etc. of certain units (components).

FIG. 1 is a schematic view of a first planar construction of a stencil ruler provided herein, the stencil ruler shown in the drawing being an olive-type stencil ruler, the dimensions noted below the stencil-like slot being in mm;

FIG. 2 is a schematic view of a second planar structure of the stencil provided herein, the stencil shown in the drawing being a drop-type stencil, the dimensions noted below the stencil forming slot being in mm;

FIG. 3 is a schematic view of a third planar structure of the stencil provided herein, the stencil shown in the drawing being a pad-type stencil, the dimensions noted below the stencil forming grooves being in mm;

FIG. 4 is a schematic view of a fourth planar structure of the stencil provided herein, the stencil shown in this view being a heart-shaped stencil, the dimensions noted below the stencil forming slot being in mm;

FIG. 5 is a schematic view of a fifth planar construction of the stencil ruler provided herein, the stencil ruler shown in the drawing being a princess square-type stencil ruler, the dimensions noted below the stencil-like grooves being in mm;

fig. 6 is a schematic view of a sixth planar structure of the stencil ruler provided in the present application, the stencil ruler shown in the figure being an emerald type ruler, the dimensions noted below the stencil-shaped grooves being in mm.

Reference numerals illustrate:

1. a stencil ruler body; 2. scale marks; 3. step indication marks; 4. a first stencil-shaped groove; 5. a second template-shaped groove; 6. an auxiliary outer contour line; 7. a reference auxiliary line; 8. and a third template-shaped groove.

Detailed Description

The present application is further described in detail below with reference to the attached drawings.

In the description of the present application: unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "first," "second," "third," and the like in this application are intended to distinguish between the referenced objects without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on degree or order of importance, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

The terms such as "upper", "lower", "left", "right", "middle", and the like, as referred to in this application, are generally used for convenience in visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in actual products. Such changes in relative positional relationship are considered to be within the scope of the present description without departing from the technical concepts disclosed herein.

The existing jewelry drawing ruler is mainly used for drawing the outline of the shape of a precious stone, but not for drawing a faceted precious stone with perspective effect, does not have the function of rapidly drawing different facets of the precious stone with perspective effect, and is used for determining connection points of different facets by drawing a plurality of straight auxiliary lines and internal auxiliary lines with different angles in the process of drawing different facets; in addition, the basic properties of part of template ruler have larger length-width ratio difference, and can not better assist designer in drawing internal auxiliary lines, after facet drawing is completed, unnecessary auxiliary lines are required to be rubbed off by using an eraser, and the problems of stains, obvious wiping marks, unclean pictures and the like are greatly likely to occur in the process due to various and complicated auxiliary lines.

Therefore, the existing jewelry drawing ruler has relatively single function, can not assist in drawing precious stone facets with perspective effect, and can not meet the design requirement of the precious stone facets with perspective effect required in jewelry. In order to solve the problems, the application provides a template ruler capable of assisting in drawing perspective effect diagrams of different faceted precious stones, and the template ruler can assist a user to rapidly and effectively draw the perspective effect diagrams of the different faceted precious stones with perspective effects, so that the working efficiency is greatly improved, and the drawing difficulty is reduced.

The structure of the template ruler capable of assisting in drawing perspective effect figures of different cut-type precious stones and the use method thereof are described below through the following embodiments.

Example 1

The embodiment provides a template ruler capable of assisting in drawing perspective effect figures of different cut precious stones, and the body of the template ruler is of a rectangular transparent plate-shaped structure, preferably made of plastic materials, is light in weight, durable and not fragile, and can be a colorless transparent plate or a transparent plate with a certain color, such as a transparent plate with green, blue, pink and the like.

As shown in fig. 1, the shape of the template ruler body 1 in the application is preferably rectangular, the rectangle has right angles compared with the rule, and the rectangular ruler is used on A4 paper during drawing, so that the rectangular ruler is favorable for positioning; the three template-shaped grooves in each step drawing area are arranged in a row, a plurality of step drawing areas are arranged in a row, the whole step drawing areas are regularly arranged and have a certain sequence, the step drawing areas are arranged in a strip shape, the rectangular template ruler can adapt to the arrangement mode in the minimum area, the size of the template ruler is reduced as much as possible so as to be convenient to carry, and therefore, although the template ruler can be made into square, round, fan-shaped and the like, the shapes are not convenient to use and carry as long as the rectangular ruler.

The template ruler body is provided with a plurality of step drawing areas, and the number of the step drawing areas corresponds to the sizes of the precious stones commonly used in the market. For example, 14 step drawing areas are arranged on the template ruler from left to right, and one step drawing area corresponds to one gemstone size, which is shown in fig. 1.

Three mastering grooves are arranged in each step drawing area, and correspond to precious stones with the same shape and size, for example, three mastering grooves in the leftmost step drawing area of the mastering ruler body in fig. 1 correspond to olive precious stones with the size of 17 x 18 mm. In order to have the size prompting function, the template ruler is convenient for users to compare and use, and the bottom of each template-shaped groove on the template ruler is printed with the size information of the precious stone corresponding to the template-shaped groove.

Continuing to refer to FIG. 1, three stencil-shaped grooves in the leftmost stepped rendering region of the stencil body are also illustrated:

the first template forming groove 4 of the three template forming grooves (namely, the template forming groove positioned above the three template forming grooves arranged in a row from top to bottom) is a hollowed-out groove, and the outline of the groove edge is overlapped with the outline of the precious stone under the three-dimensional view. The perspective effect diagram shows a three-dimensional view angle, so that the central axis of the outer contour line of the precious stone under the three-dimensional view angle forms an included angle of 45 degrees with the long side or the wide side of the template ruler body, and the included angle is consistent with the layout direction of the outer contour line of the precious stone when the perspective effect diagram is drawn.

The second template forming groove 5 (namely, the template forming groove in the middle of the three template forming grooves which are arranged in a row from top to bottom) of the three template forming grooves is a hollowed-out groove, and the outline of the groove edge is coincident with the outline line formed by the connecting line of the kite surface and the upper waist facet of the precious stone under the three-dimensional view; in addition, the periphery of the groove edge contour of the second mastering groove 5 is printed with an auxiliary outer contour line 6 which is identical to the groove edge contour of the first mastering groove 4, and the auxiliary outer contour line 6 plays a role in corresponding positioning in the use process of the mastering rule.

In a preferred embodiment, with continued reference to fig. 1, a reference auxiliary line 7 may be printed between the edge profile of the second mastering slot 5 and the auxiliary outer contour line 6 printed on the periphery thereof, the reference auxiliary line 7 being used to assist in determining the connection line of the kite face and the upper waist facet of the gemstone in the perspective view, the reference auxiliary line 7 being understood as an auxiliary construction line for making the edge profile of the second mastering slot, embodying the construction principle of the edge profile of the second mastering slot 5.

The third template forming groove (namely, the template forming groove below the three template forming grooves arranged in a row from top to bottom) of the three template forming grooves comprises an auxiliary contour line which is printed on the template ruler body 1 and has the same shape as the second template forming groove 4, a hollowed groove is arranged in the auxiliary contour line, and the contour line of the groove edge of the hollowed groove coincides with the contour line formed by the connecting line of the kite surface and the star facet of the precious stone under the three-dimensional view angle.

The structure of the stencil ruler provided in this embodiment can be seen in fig. 1, and the stencil ruler is made of soft plastic material, and has a size of 294 mm by 140mm.

The gem cut corresponding to the template-shaped groove on the template ruler can be any one of round, elliptic, emerald, pad, pillow, olive, water drop and heart, and can be of other shapes.

The round, oval, emerald, pad, pillow, olive, drop and heart shape described above belong to the main stone cut on the market, and according to the difference of stone cuts corresponding to the template ruler, the template ruler can be correspondingly named: round type plate ruler, elliptic type plate ruler, emerald type plate ruler, pad type plate ruler, pillow type plate ruler, olive type plate ruler, water drop type plate ruler and heart type plate ruler.

When the template ruler provided by the embodiment is used for assisting in drawing a perspective effect diagram of a precious stone cut facet, the operation process is as follows:

firstly, selecting the shape and the size of a gemstone required by the user, selecting a target template ruler according to the shape and the size of the gemstone, for example, selecting an olive-type ruler, namely a ruler shown in fig. 1, and selecting template grooves with corresponding sizes on the olive-type ruler, namely a step drawing area in a third row from left to right as a target step drawing area;

placing the selected template ruler with target size and cut on the surface of A4 paper needing to draw the precious stone, moving the template ruler to enable a first template-shaped groove (the groove edge contour is the outer contour of the precious stone under the three-dimensional view angle) in a target step drawing area to move to the position needing to draw the perspective view of the precious stone in a design draft, and drawing the outer contour of the precious stone by using a pen according to the groove edge contour of the first template-shaped groove on the template ruler after alignment;

thirdly, moving the plate ruler, enabling an auxiliary outline (namely, a precious stone outline) printed on the periphery of a second template-shaped groove in the target step drawing area to correspond to the precious stone outline which is drawn in the previous step, and drawing a connecting line of a kite surface and an upper waist facet according to a groove edge outline (namely, the connecting line of the kite surface and the upper waist facet of the target precious stone in a three-dimensional view angle) of the second template-shaped groove in the target step drawing area on the plate ruler;

and fourthly, moving the plate ruler, enabling an auxiliary contour line printed on the periphery of a third template-shaped groove in the target step drawing area to correspond to the outer contour line of the precious stone and the connecting line of the kite surface and the upper waist facet which are drawn before, and drawing the connecting line of the kite surface and the star facet according to the groove edge contour of the third template-shaped groove (the groove edge contour is the connecting line of the kite surface and the star facet of the target precious stone under the three-dimensional view angle) in the target step drawing area on the plate ruler.

And fifthly, removing the stencil ruler, and connecting the left missing facet chain lines.

The template ruler provided by the application can rapidly and effectively draw perspective effect graphs of different faceted cut precious stones with perspective effect, and the problems of precious stone inclination, asymmetry, wrong faceted proportion, inaccuracy, perspective error and the like are avoided; the design method is convenient for jewelry designers to design faceted gemstones with different sizes and cut types, and solves the problem that a template ruler in the prior art cannot assist in drawing a precious stone facet with a perspective effect and cannot meet the design requirement of the faceted precious stone with the perspective effect in jewelry.

Example two

The embodiment provides a template ruler for assisting in drawing perspective effect charts of different cut-type precious stones, and the embodiment is characterized in that on the basis of the template ruler provided in the first embodiment, three step indication marks are printed in a step drawing area close to the edge of a template ruler body, and the three step indication marks correspond to three template-shaped grooves in the step drawing area one by one.

As shown in fig. 2, fig. 2 shows a drop-type stencil, three stencil-shaped grooves are arranged in a step drawing area at the leftmost side of the stencil-shaped body from top to bottom, step indication marks 3 are printed beside each stencil-shaped groove, and specifically, the three step indication marks sequentially indicate step1, step2 and step3, namely, step1, step2 and step3, are sequentially arranged from top to bottom and correspond to a first stencil-shaped groove, a second stencil-shaped groove and a third stencil-shaped groove which are sequentially arranged from top to bottom one to one. The function of setting the three-step indication mark is to prompt the user to clearly use the sequence, so that the method is very friendly for beginners.

The template ruler provided by the embodiment can prompt a user to draw connecting lines of different facets of the faceted precious stone according to the steps, so that a jewelry designer draws the faceted precious stone more conveniently, especially a beginner with a relatively unclear relation between connecting points is more obvious, time can be saved, the steps are simple and clear, the design drawing efficiency can be improved, and the device is convenient to carry and measure.

Example III

The embodiment provides a template ruler for assisting in drawing perspective effect charts of different cut-type precious stones, and the embodiment is characterized in that on the basis of the template ruler provided in the second embodiment, graduation marks are arranged at the edge of one long side of a template ruler body, and 0 graduation of the graduation marks is positioned at the upper left corner of the template ruler body. Of course, according to the use requirement, the scale mark can be arranged at the edge of one wide edge of the template ruler body during production and manufacture. Besides, the setting of the scale marks can facilitate the measurement and positioning by using the template ruler, the function of the template ruler is added, and the device not only can efficiently assist in drawing perspective effect figures of different cut-type facet gems, but also has the functions of measurement, positioning, auxiliary scribing and the like.

In summary, the template ruler provided by the application provides a step-by-step drawing mode, the drawing process of the precious stone perspective effect graph is displayed step by step, the steps are clear and definite, the use is convenient, the working efficiency can be greatly improved, and the use of beginners is convenient.

Further, the template ruler can be used for sequentially drawing the outer outline of the precious stone, the upper waist facet, the kite surface and the connecting lines between the star facets according to step prompts, drawing auxiliary lines are reduced, drawing time is saved, 5-15 minutes can be saved approximately, meanwhile, the problems that the auxiliary drawing lines are inclined, the proportion is disordered, the perspective effect is deviated and the like are solved, the accuracy is improved, and the problems of stain marks and the like after a plurality of auxiliary drawing lines are drawn and wiped can be reduced.

In addition, the template ruler provided by the application can adapt to various precious stone shapes and sizes, such as round, elliptic, emerald, pad, pillow, olive, water drop, heart and the like, and can be used for covering various common sizes of each cut, so that the design requirement of jewelry design on perspective effects of different sizes and cut facet precious stones can be met, and the template ruler is an auxiliary drawing template ruler for the perspective effects of different cut facet precious stones of a professional jewelry class.

Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.

The foregoing has outlined and detailed description of the present application in terms of the general description and embodiments. It should be appreciated that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but such conventional modifications and further innovations may be made without departing from the technical spirit of the present application, and such conventional modifications and further innovations are also intended to fall within the scope of the claims of the present application.

Claims (8)

1. The template ruler is characterized by comprising a template ruler body, wherein a plurality of step drawing areas are arranged on the template ruler body;

three template-shaped grooves are arranged in each step drawing area, the three template-shaped grooves correspond to precious stones with the same shape and size, a first template-shaped groove in the three template-shaped grooves is a hollowed-out groove, and the outline of the groove edge of the first template-shaped groove coincides with the outline of the precious stone under a three-dimensional view angle; a second template-shaped groove in the three template-shaped grooves is a hollow groove, the groove edge profile of the second template-shaped groove is coincident with the profile line formed by the connecting line of the kite surface and the upper waist facet of the precious stone under the three-dimensional view angle, and the periphery of the groove edge profile of the second template-shaped groove is printed with an auxiliary outer profile line which is identical with the groove edge profile of the first template-shaped groove; a third template-shaped groove of the three template-shaped grooves comprises an auxiliary contour line which is printed on the template ruler body and has the same shape as the second template-shaped groove, a hollowed groove is arranged in the auxiliary contour line, and the contour of the groove edge of the hollowed groove coincides with the contour line formed by the connecting line of the kite surface and the star facet of the precious stone under the three-dimensional view angle;

the step drawing units respectively correspond to precious stones with the same shape and different sizes;

the template ruler body is of a rectangular transparent platy structure, and a 45-degree included angle is formed between the central axis of the outer contour line of the precious stone under the three-dimensional visual angle and the long side or the wide side of the template ruler body.

2. The template ruler for assisting in drawing perspective effect figures of different cut facet gemstones according to claim 1, wherein a reference auxiliary line is printed between the groove edge outline of the second template-shaped groove and the auxiliary external contour line printed on the periphery of the second template-shaped groove, and the reference auxiliary line is used for assisting in determining connecting lines of kite faces and upper waist facets of the gemstones in a three-dimensional view.

3. A masterscale for assisting in drawing perspective effect maps of differently cut faceted precious stones according to claim 1, characterized in that three mastered grooves located in one of said step drawing areas are aligned on said masterscale body; and a plurality of step drawing areas are arranged in a row along the extending direction of any side of the template ruler body.

4. A mastering scale for assisting in drawing perspective effect figures of differently cut faceted precious stones according to claim 3, characterized in that the first mastering groove, the second mastering groove and the third mastering groove in said step drawing area are arranged in a row from top to bottom along the broadside extension direction of the mastering scale body.

5. The template ruler for assisting in drawing perspective effect charts of different cut precious stones according to claim 1, wherein three step indication marks are printed in one step drawing area close to the edge of the template ruler body, and the three step indication marks correspond to three template-shaped grooves in the step drawing area one by one.

6. The masterscale for assisting in drawing perspective effect charts of differently cut faceted precious stones according to claim 1, characterized in that the bottom of each mastering groove is printed with dimension information of the precious stone corresponding to said mastering groove.

7. The template ruler for assisting in drawing perspective effect figures of different cut precious stones according to claim 1, wherein graduation marks are arranged on the edge of at least one side of the template ruler body; the 0 scale of the scale mark is positioned at the corner of the template ruler body.

8. The template ruler for assisting in drawing perspective effect charts of different cut precious stones according to claim 1, wherein precious stone cut corresponding to template-shaped grooves on the template ruler body comprises any one of round, oval, emerald, pad, pillow, olive, drop and heart.