ES2278894T3 - PROCEDURE FOR DEVELOPING A SERIES OF FOOTWEAR HORNS DISTRIBUTED IN A SERIES OF SIZES FROM A BASE STORM. - Google Patents

Abstract

The invention relates to a new method for developing a series of shoe lasts starting from a base shoe last provided in a basic shoe size. The method comprises the following steps: gathering the spatial coordinates (xB,yB,zB) of points on the base shoe last (2) of basic shoe size using gauges (15) associated with a first computer means (10) on which CAD programs are run; obtaining, from the spatial coordinates (xB,yB,zB) of points on the base shoe last (2) of basic shoe size, spatial coordinates (xn,yn,zn) of points on at least another shoe last in the seris, by using predetermined calculation formulae entered to said computer means, the socalled grading of lasts; storing, into said storage unit, said coordinates (xn,yn,zn) of points on said at least another shoe last in the series. <IMAGE>

Description

Procedure to develop a series of shoe lasts distributed in a series of sizes from one last base.

Field of the Invention

The present invention relates to a procedure to develop a series of shoe molds, also called shoe lasts, from a base mold of footwear provided in a basic shoe size, according to the preamble of claim 1.

In particular, but not exclusively, the invention refers to a procedure that applies to the scale manufacturing of a series of footwear distributed in a series of different sizes, from a shoe base mold provided in a basic shoe size and the following description is made in relation to this field of application just to facilitate the illustration.

Prior art

As is well known in this technical field, for manufacture footwear on a large and very large scale, it is necessary to have preformed shoe molds from a design of predetermined footwear and in the different shoe sizes that They will manufacture. Said shoe design will be referred to hereafter the "shoe base mold".

In the state of the art, each shoe mold is made by mechanically extracting material from a preformed blank of plastic materials that is obviously provided in a global size somewhat larger than the finished shoe mold. Said machining is carried out, for example, in machine tools known as "Donzelli lathes", which are equipped with a caliper or measuring head to read the design of footwear to be produced and with a series of machining heads, normally , four heads machinize-
tes.

These lathes incorporate a mechanical system of graduation and can produce a full range of size left / right footwear from a single base mold of footwear that has been made, for example, by an expert designer of Footwear or a stylist.

An arrangement composed of gears and levers allow to adjust the dimensions of the shoe base mold along three Cartesian axes. Fundamentally, these lathes they include levers that allow to carry out said graduation from of kinematic relationships and predetermined mechanisms, very known in the industry.

However, it should be borne in mind that this machining procedure does not sufficiently take into account the anatomy and morphology of a developing human foot, which, in a certain way mode, they change with both the type and foot size of a person.

Therefore, the manufacturer of shoe molds or shoe designs is obliged to apply corrections during the machining process, to produce a series of shoe molds that adhere to the evolution of the foot in an anatomically accurate mold. Such corrective actions are left to the discretion of the operator and are limited by the limitations of the machine. Therefore, the production of exact copies of a series of shoe molds covering a range of shoe sizes cannot be guaranteed, while maintaining the style
original.

In addition, there is currently a variety disconcerting of shoe numbering systems and of subjective procedures of shoe mold measurement, which with frequency leads to a total lack of communication when the information must circulate between a certain amount of subjects.

Over the years, for example, the manufacturers of footwear that had planned for their production to adapt to equipment and systems tailored to your needs, due to changes of manufacturing processes, they currently have to share their information with external suppliers of tools, parts or services that may be using systems and procedures of different measurement.

This substantial inconsistency of measurement tools and systems paradoxically deprives the ability to obtain values that are comparable, that is, the different subjects that take care of carrying out the measurement proper establish the same measurements.

Thanks to document US 4,884,309 a prior art procedure for making shoe lasts that it involves digitizing, by the fast track, a large number of points of sampling on the outer surface of a model last for produce a digital file of model lasts and classify the file model last digital to produce one or more digital files of classified lasts. Each of the digital files of classified lasts is used to produce a shoe last classified.

Thanks to document EP 0019459A1, a Additional prior art procedure for obtaining footwear manufacturing patterns, which corresponds to the preamble of the attached claim 1. The procedure consists in using a computer to handle coordinate information three-dimensional relative to the shape of the shoe last for produce three-dimensional coordinate information. Bliss information is submitted to a classification program that produces three-dimensional coordinate information for different sizes.

However, no known procedure describes how to develop a series of molds of different sizes starting from a base mold that guarantees a perfect adaptation to the morphology and anatomy of the human foot through the interval full of shoe sizes.

The underlying technical problem of this invention is to provide a new procedure to develop a series of shoe molds, distributed in a series of sizes of footwear, with suitable characteristics that allow molds to be manufactured of shoes that adapt exactly to the morphology and anatomy of the foot while maintaining its similarity to a base mold of footwear through the various sizes provided. Likewise, This procedure favors manufacturing procedures and Simpler shoe design and lower production costs.

Summary of the Invention

The solvent idea of this invention is to use CAD software to collect the spatial coordinates of a mold shoe base and apply them to different shoe sizes of said shoe base mold using emulating parameters completely, or at least strictly follow, evolution morphological of the human foot.

Once a shoe mold is obtained for each shoe size, running a CAM system in a machinery NC tool, shoe molds can be manufactured to very large scale in conventional machine tools, manufacturing substantially, thereby, exact copies of each mold of CAD footwear across the entire shoe size range.

Based on that idea, the technical problem is resolves through a mold development procedure footwear as defined in the attached claim 1 appearing later.

The characteristics and advantages of the procedure and of the shoe mold according to this invention will be apparent thanks to the following description of embodiments of the same, given by way of example and not limiting in relation to attached drawings.

Brief description of the drawings

Fig. 1 shows a perspective view and schematic of a shoe mold obtained by the procedure of this invention;

fig. 2 shows a side view of the mold of footwear shown in Figure 1 and complementary items  in the form of a top pad and a template;

fig. 3 shows a perspective view of a virtual shoe mold obtained in a computer medium using CAD software for data collection according to the invention;

fig. 4 shows a side view and schematic of a shoe mold 1 that enhances the expected length  and the contour lines of the shoe mold;

fig. 5 shows a schematic view of a base mold of footwear of basic size of footwear, subject to a data collection operation through a computer medium in the one that runs CAD software, according to the procedure of this invention;

fig. 5A shows a detail of the form of embodiment of Figure 5;

the figs. 6A, 6B and 6C show side views, upper and again lateral, respectively, of a mold of footwear, which enhances distances, axes and reference planes of the same;

the figs. 7, 8 and 9 show graphs that illustrate the dimensional proportions and qualitative relationships to along the X, Y and Z axes of the shoe molds according to reconstruct with the method of the invention to adapt Variable shoe sizes designed for children, ladies and gentlemen, respectively.

Detailed description

In relation to the drawings, especially with the embodiment shown in Figure 3 thereof, usually it is shown schematically with the number 1 a shoe mold that has been developed in accordance with the Development procedure of this invention.

Shoe mold 1 differs from shoe molds manufactured with previous procedures in which adapts to the real anatomy and morphology of the foot and corresponds exactly to a template provided in the form of a base mold of footwear 2 covering a desired range of sizes of footwear.

As explained below, a mold Basic size shoe base of footwear is a shoe mold aimed at reproducing as much as possible a medium foot, so that It would fit the greatest possible variety of feet.

As is well known in this technical field, the shoe mold 1 is a tool used to make a series of footwear of the same type in machines for making footwear, by example, of the type of a pad assembly machine upper used to mount the upper pad of the Shovel in a shoe insole. These machines include a operator station in which the shoe mold is held in the center while the blade is embedded in the shoe mold with the template facing up and the toe oriented towards the operator.

To make all aspects of this invention be understood more clearly, can be useful first define certain distances and geometric references which are used in the rest of this specification. These References are indicated in Figures 6A, 6B and 6C as follows:

- Main axis A: it is a vertical line drawn through the center of a circle engraved in the back of the upper pad;

- Shoe mold height B: is the height above the horizontal plane of the point at which the main shaft A meets the upper pad, with the shoe insole / mold assembly in normal condition;

- Spacing C: is the height above the horizontal plane of the end point of the shoe insole / mold assembly in normal condition;

- Contour line D: is a line describing the upper edge of the template in the mold of footwear, that is, that gives the profile of the turn of the footwear or, in in other words, the bottom seam when molded over the shovel;

- Sole height E: is the sole thickness measured at the center of the support line of the plant;

- Heel height F: is the sum of the height of the shoe mold B and the height of the sole E (F = B + E);

- Template thickness G: en The template thickness dimension and includes two measurements

being G 'el thickness at the intersection with the main axis and

being G '' the thickness in the spacing line.

The procedure of this invention, which comprises a series of steps leading to develop, starting from a base mold of footwear 2 provided in a basic shoe size, a series of shoe molds distributed in a series of shoe sizes.

According to the French numbering system of footwear currently in use, usually a so-called  French numbering 21 or 22 as a basic size for footwear child, 37 or 38 for women's shoes and 41 or 42 for women's shoes gentleman. In fact, the current development system, which shows more pronounced deviations the faster a mold evolves of footwear from the base mold of footwear, explains the need of using a wide variety of shoe base molds.

To determine a base mold of footwear 2 that may be useful in this invention, a list of shoe manufacturers, each representative of a typology of specific and known footwear and operating in the market from long time ago. Each shoe manufacturer sent some molds Typical footwear, selected among the most successful and most successful demand.

It should be borne in mind that for decades it they have produced many shoe styles with continuous improvements regarding shoe molds to make them more pleasant for the foot, from the anatomical point of view, and to improve the main function of securing footwear.

Sometimes the trajectory of this development has been tortuous, resulting in frequent stages of recoil because some of the leading stylists they promote molds that do not take into account the anatomy of the foot.

However, an analysis of the huge production of shoe molds from the 50s to date showed that certain molds had maintained their popularity and a known cyclical resurgence. It can be shown that these molds adapt to good ergonomic standards and are those that have been taken into account in this
invention.

Therefore, from an evaluation of the various molds that had enjoyed success for years commercial uniform, a common factor has emerged that is very related to the anatomical evolution proper of foot.

Therefore, this analytical phase followed a phase of measurement and recording of spatial coordinates of The basic shoe size molds of footwear for a considerable amount of molds. This process resulted in some how many common aspects that seem to be the basis of commercial success of these molds.

It was observed that different shoe molds, corresponding to different designs, they had many characteristics  in common, especially with regard to a peculiar similarity of volumes, lines and adjustment in some important areas of the foot.

This similarity has been summarized in a law Mathematics, which will be described later, which is intended for reflect with real approximation the real evolution of the human foot. By applying this mathematical law, in accordance with the process of this invention, a set of molds is obtained of footwear that covers a range of shoe sizes that emulates rigorously the evolution of the human foot, thereby relegating obsolescence the innumerable evolution charts that are used Currently in the footwear industry. Thus, a design of footwear can be implemented in a simpler way and it you can increase the range of possible users of the article with little need to repeat adjustment attempts.

The process of this invention comprises a first stage of data collection related to the base mold of Footwear 2 basic shoe size. As usual, a Shoe designer or stylist can supply the base mold of footwear using conventional techniques or it can be a mold Classic in the industry.

Regarding these alternatives, the procedure of this invention comprises a step of digitizing the mold basic size shoe base.

More particularly, the surface 3 of the mold Basic size 2 shoe base is precisely calibrated to get spatial coordinates x_ {B}, y_ {B} and z_ {B} of each point P_ {B} of that surface, using calibers and CAD media of data collection.

In essence, a 15 gauge travels through of the actual surface of the shoe base mold along trajectories that allow the object to be reconstructed precisely. The 15 gauge is basically a mechanical type of controlled gauge by computer or manually operated. Alternatively, the Physical surface 3 of shoe base mold 2 could be scanned by laser. The 15 gauge is controlled by the computer medium to vary the reading intervals between different zones surface criticality 3.

It is very important that important profiles and the characterizing measurements, taken from the shoe base mold, Do not submit to the personal criteria of an operator. Because of this, the 15 gauge is arranged to control it by means 10 that runs CAD simulation programs. For the Thus, the basic size shoe base mold 2 is digitized, that is, it is reconstructed digitally using a technique of 3D data collection.

Preferably, in the process of this invention, surface 3 is contacted directly. In fact, data collection using a mechanical caliber is normally precise enough, although it takes more time and more hardware.

As indicated above, they could use optical systems, although they are sure to introduce a local distortion due to reflection and / or interference, which makes reconstruction inevitable superficial.

In all cases, the result of this stage Data collection is a data file that can be analyze in a 3D CAD environment. The surface 3 of the base mold of footwear 2 is rebuilt digitally and with the CAD program you They can correct possible errors in the scanning process.

Procedural tests you have carried out the applicant show that a real adaptation can be achieved of reconstructed surfaces 4 with real surfaces 3.

As an advantage, the reconstruction stage of the surface 3 of the base shoe mold 2 in a 3D CAD environment allows to maintain correspondence and compatibility with operations shoe manufacturing before and after the procedure. By example, during the data collection stage, you can follow the same contour lines that traditionally use the shoe designers and the same sections that measure manually to physically produce the shoe mold according to procedures Traditional

Naturally, there is no reason not to use a shoe base mold 2, now available in digital form for CAD processing, retrieving the necessary data from a means of separate storage of the computer 10. However, this it would involve changes in the ways of working of the manufacturers of footwear or designers of the shoe base molds. He The process of this invention allows, however, to preserve the cooperation with the stylist or designer of traditional footwear and continue working with the same references that have been used conventionally to measure shoe base molds, but with a degree of precision not known until now.

Once the mold has been digitally rebuilt shoe base 2, computer 10 will display on its screen 9 a virtual or simulated surface 4 in three dimensions, in which you can indicate exactly each point P_ {B} along its Cartesian spatial coordinates x_ {B}, y_ {B} and z_ {B}.

In essence, a shoe designer or a Stylist can traditionally design a mold  base of footwear of basic size of footwear according to the invention. Alternatively, from an existing design properly processed by means of CAD software you can get a certain shoe mold.

In the previous case, greater freedom is allowed in style, although in the last one, in a new shoe mold they can reproduce special features that are not going to give up and / or that are distinctive of a manufacturer.

The reconstructed shoe base mold can be split into three different surfaces: upper surfaces, lateral and inferior 5, 6 and 7 that, once united, produce an object three-dimensional as shown in Figure 4.

Each part of the new shoe mold 1 is reconstruct using a different technique that is specific to CAD software used and of the type of surface of interest and using 13 guidelines that reproduce a manual template digitally traditionally used by the shoe designer.

The 13 guidelines used to rebuild various shoe molds can be interpolated properly to produce a new shoe mold. This allows the manufacturer hold important elements of a series of molds footwear and for several seasons.

For example, storing data related to the 13 guidelines used to rebuild the shoe mold in a memory 8 incorporated in the computer medium 10 or associated At the same, you can create a database of shoe molds 1 for later use to provide a new shoe mold with adequate volumes, perhaps limited to a specific area of the same.

CAD software becomes a task relatively simple replacement of one or more guidelines 13 of  a structure by corresponding guidelines of another structure thus obtaining an almost perfect transformation of both, as well as the use of a totally new style in some areas of a shoe mold and maintaining its basic structure.

The construction guidelines shown in Figure 3 are examples of the underlying principle that a surface 4 of shoe mold 1 can be described in a manner adequate through the data of its construction lines and which CAM machinery can use such data to carry out certain machining operations of both shoe mold 1 as of the footwear obtained from it.

As an advantage, this also allows to obtain the real developments of length (X axis) and width (Y axis) of the floor surface, as well as the perimeter of the shoe mold in its important areas, such as adjustment, instep, relationship from heel to metatarsal to tarsus, heel height, spacing, etc.

In this context, the applicant has led to conducted studies that have surprisingly shown that some classical mechanical development standards, which are currently used to produce a shoe mold in a range of sizes of footwear, lead to the degree of comfort is degraded progressively In essence, as the shoe size changes, it loses the spatial adaptation of the mainland footwear with respect to the foot  content. This is because the shape of the foot does not evolve. linearly, but undergoes pronounced changes according to A person ages.

The increase in width and thickness of the foot follows a arched pattern, facing an increase in length that is constant. For example, in the graphs of Figures 7, 8 and 9, they have been plotted lines that represent proportions of increase along the Y axis (width) and Z axis (thickness) of the foot versus a proportion magnification constant along the X axis (length) that is equal to 0.5 cm It can be seen that the patterns of increase in width and thickness of the foot are arched, in relation to a constant proportion of length increase.

In the state of the art, the manufacturers of shoe molds have faced the progressive degradation of a type of shoe mold with remedies that suggested their individual experience These remedies were applied in the phase of graduation (development) of a shoe mold and, over time, have resulted in an uncontrolled production of molds shoes that only adapt to the actual volume of the foot in a few sizes.

As an advantage, in this invention, they have established regular series of development parameters from of a basic size that guarantee a perfect adaptation to the foot in The entire range of shoe sizes.

In this regard, it should be borne in mind that a constant proportion of foot length increase (X axis) it is analogous to a lower proportion of the width increase of the foot and an even smaller increase in foot thickness. In fact, the Foot shape is more elongated as length increases.

On the other hand, as the length decreases, the foot tends more to thick proportions, and in the end, its differential characteristics, left and right, are little clear.

This excludes all possibilities of reproduce an anatomically correct evolution in the lathes Donzelli current, because they can not distinguish between the Y and Z axes.

Develop shoe molds by means computer software executing CAD software produces faithful replicas of human foot sizes and retains the proportion of users to which can offer a specific design in all its sizes.

On the contrary, with the development process current mechanic, the proportion of possible users decreases so much regarding larger and smaller sizes, making it necessary to try Repeatedly an adjustment, complicating things a lot for the manufacturer or restricting user choice.

With a whole series of shoe molds available digitally, a shoe manufacturer can commission respective suppliers of footwear components that agree and can be guaranteed full compatibility. This avoids the need to adjust each component in a process that, currently, it often results in the mold of footwear undergoes a substantial alteration and that the foot / mold shoe adaptation.

As mentioned above, the change in width and thickness is different along the Y axis than at along the Z axis and a function of the values is used as a reference absolutes of these quantities and their proximity to the basic size of footwear.

Next, the formula will be given in detail Mathematics applicable to shoe base mold variations 2 basic size along the X, Y and Z axes.

Preferably, it is assumed that the proportion of increase along the X axis that sets the size of footwear of the shoe molds is constant, although it is not It should take as a limitation of the applicant's rights.

In essence, this invention provides a innovative footwear size measurement system based on the metric system and expressed in cm and as increments of length of 0.5 cm Therefore, each shoe size is expressed by of a descriptive number of the length in cm (for example, 20; 20.5; twenty-one; etc).

The length is represented by the real plant surface developed along its axis longitudinal, less possible mold style accessories footwear, as shown in Figure 4.

Therefore, it will be understood that the size is refers to the foot that can accommodate the footwear, not the length of the footwear proper.

This helps a consumer in their choice of a Proper size regardless of a shoe style.

Variations of coordinate points space, for at least one other shoe mold in the range of shoe sizes, are obtained using dynamic coefficients differentiated along each of the three Cartesian axes of the development of shoe molds.

These coefficients are:

c_ {x}:

 a development coefficient a along X (length),

c_ {y}:

 a development coefficient a along Y (width),

c_ {z}:

 a development coefficient a along Z (thickness).

An integer n will be used to indicate the positive or negative distance of a given shoe size Regarding the basic size.

The coefficients c_ {x}, c_ {y} and c_ {z} are n functions according to the following formulas:

       \ vskip1.000000 \ baselineskip
    

quad

Cx = 1 + f (n)

quad

Cy = 1 + f (n) - f (n \ cdot | n |)

quad

Cz = 1 + f (n) - f (n \ cdot | n |)

       \ newpage
    

Preferably, but not limited to this, the previous functions of the integer n are functions of multiplication by predetermined numerical parameters (a, b, c, d, and,), according to the following relationships:

quad

Cx = 1 + n \ cdota

quad

Cy = 1 + n \ cdotb - n \ cdot | n | \ cdotc

quad

Cz = 1 + n \ cdotd - n \ cdot | n | \ cdote

The numerical parameters a, b, c, d and e, which multiply the term n, may vary according to needs own of a manufacturer, without this invalidating the process.

The values of c and e may be different between yes, but instead they could be matched.

For example, you could write the following relationship set:

quad

Cx = 1 + n (1.9 · 10-2)

quad

Cy = 1 + n (2.45 \ 10 - 2) - n \ cdot | n | (5 \ cdot10-4)

quad

Cz = 1 + n (1.45 \ 10 - 2) - n \ cdot | n | (5 \ cdot10-4)

In 3D CAD software, once it is known the basic size, all interval sizes can be obtained graduating the basic size according to the three coefficients of the previous formulas.

It should be taken into account that the coefficients of development from a base mold of child footwear would be very different from those used for a shoe base mold of gentleman, although the mathematical formula system remains without changes. In fact, to develop from a base mold of child footwear, the systems of the formulas are equal and only the numerical terms change, since morphological evolution which is typical of development is quite different from graduation Simple towards adulthood.

Again in this case, you could write, by example, the following set of relationships:

quad

Cx = 1 + n (3.2 • 10-2)

quad

Cy = 1 + n (3.06 · 10-2) - n \ cdot | n | (6 \ cdot10-4)

quad

Cz = 1 + n (2.85 \ 10 - 2) - n \ cdot | n | (5 \ cdot10-4)

In particular, these numerical parameters can vary within ranges of values as follows:

to

constant variation along X (3.5 \ div1.5)? 10-2

b

first grade variation along Y (3.5 \ div2.5)? 10-2

C

second grade variation along Y (4.0 \ div7.0)? 10-4

d

first grade variation along Z (3.0? 1.0)? 10-2

and

second grade variation along Z (4.0 \ div7.0)? 10-4

The obvious complexity of the formulas is compensates with the advantage that the graphics that give values absolutes along x, y and z for each size of the interval are unnecessary, while you can give ownership of sizes basic to any shoe mold and use as the reference Initial for development.

Therefore, an established basic size maintain the style and peculiarities that mark the culture national footwear and traditions of individual brands, while through development according to new parameters You can keep the same style throughout the series, which was not viable with mechanical development procedures.

The main advantages of the procedure this invention to develop shoe molds and all loose pieces that are integrated into them, are:

?

   less need to manufacture a design for different settings,

?

   automatic cycle of shoe mold production, with less need for work manual,

?

   consistent reproducibility long-term,

?

   easy line combination different,

?

   possibility of development by lots, with considerable savings on loose parts,

?

   can occur, so economic, different settings keeping the plant without changes,

?

   fastener removal, as a result of using an integrated template,

?

   easy recycled and reuse of shoe molds,

?

   possibility of separating the design department of production facilities,

?

   construction data protected: a shoe mold can only be done as a copy,

?

   automatic cycle of footwear production, reducing manual labor costs.

Claims (12)

1. A procedure to develop a series of shoe molds distributed in a series of sizes of footwear from a shoe base mold (2) provided in a basic shoe size, which includes the following stages: - collect spatial coordinates (x_ {B}, y_ {B}, z_ {B}) of shoe base mold points (2) in size basic using calipers (15) associated with a first computer medium (10) in which CAD programs are run or obtain those spatial coordinates (x_ {B}, y_ {B}, z_ {B}) of a unit of storage, - obtain, from the spatial coordinates (x_ {B}, y_ {B}, z_ {B}) of points of the basic size shoe base mold (2), the spatial coordinates (x_ {n}, _ {} y_ {n}, z_ {n}) of points of at least one other shoe mold in the series, using said computing means equipped with predetermined calculation formulas, in which the spatial coordinates obtained (x_ {n}, _ {y} {n}, z_ {n}) of points of said at least one other shoe mold in the series are stored in said storage unit, characterized in that said calculation formulas link the spatial coordinates (x_ {n}, _ {y} {n}, z_ {n}) of points of said at least one other shoe mold in the series at the spatial coordinates (x_ {B}, y_ {B}, z_ {B}) of points of the shoe base mold ( 2) through a proportionality relationship of predetermined development coefficients (c_ {x}, c_ {y}, c_ {z}) that are functions of an integer (n) that indicates the positive or negative distance of a given size in the interval with respect to the basic size, according to the following formulas:

quad

Cx = 1 + f (n)

quad

Cy = 1 + f (n) - f (n \ cdot | n |)

quad

Cz = 1 + f (n) - f (n \ cdot | n |)

in which | n | is the value absolute of n. 2. Method according to claim 1, characterized in that said functions of said integer (n) are multiplication functions by predetermined numerical parameters (a, b, c, d, e,), according to the following relationships:

quad

Cx = 1 + n \ cdota

quad

Cy = 1 + n \ cdotb - n \ cdot | n | \ cdotc

quad

Cz = 1 + n \ cdotd - n \ cdot | n | \ cdote

3. Method according to claim 2, characterized in that the parameter (a) of constant length variation along the X axis varies within the range of (3.5 \ div1.5) \ cdot10-2. Method according to claim 2, characterized in that the parameter (b) of first degree width variation along the Y axis varies within the range of (3.5 \ div2.0) \ cdot10-2. 5. Method according to claim 2, characterized in that the parameter (d) of first degree thickness variation along the Z axis varies within the range of (3.0 \ div1.0) \ cdot10-2. Method according to claim 2, characterized in that the parameter (c) of second degree width variation along the Y axis varies within the range of (4.0 \ div7.0) \ cdot10-4. Method according to claim 2, characterized in that the parameter (e) of second degree thickness variation along the Z axis varies within the range of (4.0 \ div7.0) \ cdot10-4. Method according to claim 2, characterized in that the values of said parameters (c, e) of second degree variation along the Y and Z axes can coincide. 9. Method according to claim 2, characterized in that the values of said parameters (a, b, c, d, e,) are increased to develop shoe molds for sizes for children from those of development of shoe molds for women /gentleman. Method according to claim 1, characterized in that said calibers (15) measure the surface (3) of said base shoe mold (2) in combination with said computing means (10) in which CAD programs are executed. Method according to claim 1, characterized in that said first computer means comprises a computer unit in which CAD / CAM programs and said storage unit are executed. 12. Method according to claim 1, characterized in that said storage unit contains a database.