This standard specifies the test methods for the external dimensions of various shoe lasts. This standard does not apply to the test of the intrinsic quality of shoe lasts. GB/T 3294-1998 Test methods for shoe last dimensions GB/T3294-1998 Standard download decompression password: www.bzxz.net

GB/T3294—1998www.bzxz.net
Shoes are the basis of footwear production and are directly related to the shape, size and quality of finished shoes. This standard is revised on the basis of the 14 years since the implementation of the 1982 version. The measuring tools, the detection of the correctness of the implant and the relevant illustrations have been changed to further improve the degree of standardization and facilitate operation. The measuring instruments such as height vernier caliper and wide seat square are used in the clauses to replace the non-measuring instruments such as front measuring tools and triangles in the original version. The measurement of the correctness of the bottom (four-point detection) replaces the inspection called four-point flatness in the original version; the detection of the correctness of the body is replaced, and the inspection of one point and one line in the original version is supplemented. The detection method of the width of the shoe is added. Due to the complex shape of the shoe, it is difficult to detect all its external dimensions. This standard only lists the quantitative inspection methods of the dimensions of the main parts. It is for use by departments such as shoe design, production, use and inspection. From the date of implementation, this standard will replace G8294-82. This standard is proposed by the China Light Industry General Association.
This standard is under the jurisdiction of the National Footwear Standardization Center. The drafting units of this standard are: Footwear Research Institute of China Light Industry Association, Shandong Product Quality Supervision and Inspection Institute. The main drafters of this standard are: Yan Huaidao, Liu Yijin. This standard was first issued on November 19, 1982 and the first revised and issued on January 16, 1998.
This standard is interpreted by the National Footwear Standardization Center. 1 Scope
National Standard of the People's Republic of China
Method of inspection for last sizes
Method of inspection for last sizes This standard specifies the inspection method for the external dimensions of various footwear. This standard is not applicable to the inspection of the internal quality of footwear. 2 Reference standards
GB/T 3294.--1998
This standard is GB3294--82
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, so parties that carry this standard should explore the possibility of using the latest versions of the following standards. GB2703-81 Leather Shoe Industry Terminology
3 Test specimen
A pair of intact (must be a pair) shoes. 4 Measuring tools, measuring tools
Platform (flat iron platform, stone slab, drum glass flat plate), stylus plate and materials or devices for fixing shoes (such as plasticine or other devices that can fix shoes), etc.
4.2 Most
a) Vernier caliper (specification: 300 or more; graduation: 0.02mm); b) Height vernier caliper (specification: 300mm or more; graduation: 0.02mm); c) Foot parallel gauge (specification 300mm or more; graduation: 0.1mm); d) Copper ruler (graduation 1mm);
center) Wide seat square (accuracy level 2); f) Shoe strap ruler (specification: 5cm1 graduation = 1mm). 5. Testing of shoe plant size
5.1 Mark the relevant points to be tested on the left and right foot plants (such as the front and rear end points of the sole, the toe joint point, the center point, the first and fifth toe-avoiding points, the front and rear points of the whole mouth, etc.). The left and right shoes must be measured symmetrically. 5.2 Detection of the length of the sole
5.2.1 Detection of the length
Use a vernier caliper to measure the straight line length between the front end point of the sole and the rear end point of the heel (1 in Figure 1). 5.2.2 Detection of the length of the sole
Approved by the State Administration of Technical Supervision on January 16, 1998 and implemented on December 1, 1998
GE/T 3294-1998
Use a shoe tape measure to press against the shoe and measure the length of the front and rear points of the sole (Figure 1,). 5.2.3 Detection of the length of the sole
Use a vernier caliper to measure the straight line length between the front and rear end points of the sole (L in Figure 1). 5.2.4 Detection of the overall length
Use a vernier caliper to measure the straight line length between the front end point of the sole and the heel protrusion (L in Figure 1,). 5.3 Two inspections of mold body height
Use a vernier caliper to measure the straight-line distance between the rear point of the mold opening and the rear point of the mold bottom (Figure 1). 5.4 Inspection of shoe back tolerance
Use a vernier caliper to measure the total length L, and the difference between it and the sole length L is the back wear difference (Figure 1) HE
A-front end point of sole, B-toe point, C-forefoot point D-rear end point: E-heel point; H-back point of instep G-front point of instep L-length: L-instep length, where a is the length of sole x h is the height of back shoe, h is the back span height x front span height
Figure 1 Schematic diagram of shoe size measurement
5.5 Inspection of shoe instep
5. 5. 1 Inspection of instep length
Use a vernier caliper to measure the straight-line distance between the front point and the back point of the instep, which is the instep length (GF in Figure 1). 5.5.2 Inlet width test
Use a vernier caliper to measure the straight-line distance between the two widest points of the inlet (II and 1), which is the inlet width (HI in 1). 5.6 Shoe circumference test
5.6.1 The size of the shoe includes the heel, heel, heel, ankle, toe and inlet circumference. Before measuring, mark the relevant points of the left and right shoes.
5.6.2 During measurement, align the zero point of the shoe tape with the starting point of the measurement of the body, and circle the body closely with the same side of the shoe tape to the same measurement point. The reading of the value at the intersection of the two sides of the shoe tape is the corresponding measured width (Figure 2) 5.7 Detection of shoe sole width
5.7.1 Detection of big toe width
GB/T 3294—1998
1.1.1.2 Measurement of shoe sole circumference
Put the shoe tape closely against the sole surface and measure the vertical distance from the big toe external point to the instep axis. 5.7.2 Detection of little toe external width
Put the shoe tape closely against the sole surface and measure the vertical distance from the little toe external point to the instep line. 5.3 Inspection of single toe width
Use a shoe tape measure to press against the sole surface of the shoe and measure the width of the perpendicular line of the sample axis passing through the first toe position at the inner part of the sole. 5.7.4 Inspection of fifth toe width
Use a shoe tape measure to press against the sole surface of the shoe and measure the width of the perpendicular line of the sample axis passing through the fifth toe position at the outer part of the sole. 5.7.5 Inspection of basic width
The first toe width and the fifth toe width are the basic width. 5.7.6 Inspection of full width
Use a shoe tape measure to press against the sole surface of the shoe and measure the width of the sole perpendicular to the dividing line. 5.8 Inspection of width
Use a vernier caliper to measure the distance between the innermost point and the outermost point of the front of the shoe. 5.9 Inspection of shoe height
5.9.1 Total front height measurement
Put the shoe bottom up on the platform, and use a vernier caliper to measure the vertical distance between the front end of the sole and the horizontal surface (Fig. 3h).
5.9.2 Inspection of front and back height
Put the shoe bottom up, and place a heel of corresponding height on the back, and use a vernier caliper to measure the vertical distance between the front end of the sole and the horizontal surface (Fig. 3h), which is the front height. The vertical distance between the rear end of the sole and the horizontal plane (h2) is measured in the same way as the back height. GB/T 3294-1998
The dotted line indicates the shoe height when measuring the total heel height: The solid line indicates the shoe height when measuring the front and rear heights: - front height - rear height, total front height
Figure 3 Measurement of total front height and front height
5.10 Special toe thickness test
Mark the end point of the toe on the length mark line of the toe sole, point B, place the shoe properly, make the toe sole pass through point B and be tangent to the horizontal surface, and then determine point B', so that BB' is perpendicular to the horizontal surface. Use a vernier caliper to measure the distance between the two points BR, which is the stable toe thickness (Figure 4). Figure 4 Toe thickness inspection
5.11 Shoe straightness inspection
5.11.1 Sole straightness inspection (four-point inspection) Fix the shoe sole upwards on the platform (using plasticine, etc.) to stabilize the shoe. Adjust the center point, outer center point and the first (or fifth) toe edge point to be on the same plane parallel to the platform (stylus plate inspection). Use a height vernier caliper to measure the height difference between the fifth (or first) toe edge point or other relevant corresponding points and the upper three points (see Figure 5). Figure 5 Inspection of the bottom straightness
5. 11. 2 Inspection of the body straightness
5.11.2.1 Inspection of the back point of the implant
GB/T 3294-1998
According to 5.11.1, adjust the line connecting the center point and the outer point of the body downward to the flat surface, align the vertical edge of the wide-base true angle ruler with the back point of the implant, and measure the distance of the back point of the implant from the vertical edge of the ruler (see Figure 6). 1 Bottom back point 2 Back point of the body
Figure 6 Inspection of the back point of the implant
5.11.2.2 Testing of the front point of the shoe opening
Put the shoe sideways on a platform and fix it with plasticine to make the shoe stable. Adjust the front end point of the sole so that the rear end point of the sole and the rear point of the opening are in the same plane parallel to the platform. Then use a height vernier caliper to measure the deviation of the front point of the opening relative to the plane (see Figure ?). 1-front end point of the sole; 2-rear end point of the sole; 3-rear point of the opening; 4-front point of the opening Figure 7 Testing of the front point of the opening
5.12 Testing of convexity and concavity of the shoe
5.12.1 Testing of the convexity of the forefoot
CE/T3294-1998
Use the line connecting the first toe edge point and the fifth toe edge point on the shoe as the reference line. Use a tripod parallel gauge to measure the distance of the forefoot convexity point relative to the base line, which is the forefoot convexity value (see Figure 8). O
1~-front convex point; 2--bottom concave point 13--bottom convex point Figure 8 Use a tripod parallelogram to measure the convexity of the plant bottom
5.12.2 Detection of plant convexity
Use the line connecting the top center point and the bottom center point as the baseline, and use a tripod parallelogram to measure the height of the top center convex point relative to the baseline, which is the distance from the center (see Figure 8)
5.12. 3 Detection of bottom concaveness
Use the line connecting the front palm convex point and the bottom center convex point as the baseline, and use a tripod parallelogram to measure the distance of the bottom center concave point relative to the baseline, which is the bottom center circumference value (see Figure 8)
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