Method of manufacturing a folding machine pivot shaft

Abstract

The present application relates to the technical field of metal processing, and discloses a manufacturing method of a folding machine rotating shaft, comprising the following steps: S1, providing a blank, the blank has a forming blank for forming a rotating shaft and an auxiliary blank connected to both sides of the forming blank, and an outer side surface consistent with the product shape is processed on the forming blank; S2, processing a groove at the forming blank with the auxiliary blank as an auxiliary positioning, forming a rotating shaft rough blank; S3, processing the inner wall of the groove, forming a rotating shaft connected to the auxiliary blank; S4, separating the connection between the rotating shaft and the auxiliary blank, forming a rotating shaft finished product. First, an aluminum extrusion material is used to form the blank, the forming blank is used to form the product, and the auxiliary blank is used to assist the formation of the product, the auxiliary blank is fixed and positioned to make it easier to generate the product on the forming blank; the groove is processed first to make it easier to fall in the subsequent process and reduce the processing difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal processing, in particular to a folding machine rotating shaft manufacturing method. BACKGROUND

[0002] The folding machine rotating shaft is an important component of folding electronic products such as folding mobile phones, etc. It not only provides secure protection for folding electronic products, but also gives folding electronic products a unique appearance and texture. The metal rotating shaft, as a key functional part of folding screen electronic products, plays a crucial role in the screen experience of folding electronic products. The rotating shaft is a shaft installed on the folding electronic product that can make the electronic product rotate and fold. It enables the electronic product screen to fold and unfold, and the rotating shaft not only affects the appearance and portability of the electronic product, but also directly affects the service life, durability and experience of the electronic product.

[0003] With the pursuit of individualization, the design of folding electronic product rotating shafts is diverse. Therefore, the structure of folding electronic product rotating shafts is gradually complex, and the appearance processing difficulty is increasing. How to reasonably and accurately process the appearance and inner cavity of the back shell becomes a problem. SUMMARY

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present application is to provide a folding machine rotating shaft manufacturing method to solve the problem of folding electronic product rotating shaft processing.

[0005] To solve the above technical problems, one technical scheme adopted by the present application is to provide a folding machine rotating shaft manufacturing method comprising the following steps:

[0006] S1, providing a blank, the blank having a forming blank for forming a rotating shaft and auxiliary blanks connected to both sides of the forming blank, an outer side surface consistent with the product appearance being processed on the forming blank;

[0007] S2, processing a groove at the forming blank with the auxiliary blank as an auxiliary positioning, forming a rotating shaft rough blank;

[0008] S3, processing the inner wall of the groove to form a rotating shaft connected to the auxiliary blank;

[0009] S4, separating the connection between the rotating shaft and the auxiliary blank to form a rotating shaft finished product.

[0010] Further, the S2 step comprises the following sub-steps:

[0011] S21, processing a first reference surface on a first side surface of the auxiliary blank and the forming blank flush, and processing a positioning structure through the auxiliary blank in the thickness direction at the position corresponding to the two auxiliary blanks on the first reference surface;

[0012] S22, machining the groove from the first reference surface of the self-forming blank with the aid of the positioning structure, the groove having a first machined surface distributed away from the first reference surface along the thickness direction and two second machined surfaces oppositely arranged along the width direction to form the shaft rough blank.

[0013] Further, in the S22 step, the two auxiliary blanks are oppositely provided with U-shaped hanger grooves penetrating along the thickness direction.

[0014] Further, the S3 step includes the following sub-steps:

[0015] S31, two protruding end blocks are machined on the first machined surface along the thickness direction and are oppositely arranged along the length direction at the two ends of the first machined surface, and the two end blocks are respectively machined along the thickness direction to form first avoiding grooves open to the first reference surface;

[0016] S32, the two second machined surfaces are machined along the thickness direction to thin the two second machined surfaces to form connecting surfaces connecting the auxiliary blanks, and a plurality of first protrusions connected to the first machined surface are symmetrically machined on the two connecting surfaces;

[0017] S33, a first forming cavity is machined on the first machined surface along the thickness direction, the first forming cavity is provided with a third machined surface distributed away from the first reference surface along the thickness direction, a plurality of first protrusions are machined on the cavity wall of the first forming cavity, and a shaft edge is respectively machined on each of the two sides of the first forming cavity along the width direction, and the first protrusions are connected to the shaft edges, wherein an end surface is machined on the first machined surface on the side of the first avoiding groove facing the first forming cavity, and a middle part of the end surface is concave to the side of the third machined surface, so that the two end blocks form end plates;

[0018] S34, the third machined surface is machined along the thickness direction to machine a second forming cavity, a plurality of second protrusions in the second forming cavity, and a plurality of third protrusions in the second forming cavity.

[0019] Further, in the S32 step, the two shaft edges are each provided with two first protrusions and two second protrusions, the two first protrusions are located between the two second protrusions and are spaced apart, and the two second protrusions are oppositely arranged along the length direction at the two ends of the connecting surface and are connected to the connecting surface; a hanger hole is provided on the first reference surface of the two auxiliary blanks along the thickness direction and corresponds to the position of each first protrusion, and the hanger hole penetrates the connecting surface along the thickness direction.

[0020] Further, the S34 step includes the following sub-steps:

[0021] S341. A second protrusion is machined along the thickness direction to form an outer wall surface. The outer wall surface has an arc-shaped surface and a flat surface connected to the arc-shaped surface. A first positioning groove is opened on the side of the second protrusion corresponding to the third machining surface to form a first positioning post. Four first positioning posts are set and opened sequentially. The flat surface of each first positioning post is connected to the side wall of the second forming cavity. The connection between the first positioning post and the second forming cavity is chamfered.

[0022] Furthermore, step S34 also includes the following sub-steps:

[0023] S342, The third protrusion is set as two and symmetrically distributed along the length direction.

[0024] Furthermore, step S342 includes the following sub-steps:

[0025] S3421. A first partition is machined from the third protrusion along the thickness direction to the bottom wall of the second forming cavity. The first partition is protruding along the width direction and conforms to the cavity wall of the second forming cavity. Two first concave arc surfaces distributed along the width direction are machined on the side of the first partition facing the first reference surface. A convex wall is machined on the part of the two first partitions located between the two first concave arc sides and on the opposite side.

[0026] S3422. A second partition is machined from the third protrusion along the thickness direction to the bottom wall of the second forming cavity. The two first partitions of the two third protrusions are located inside the second partition. The second partition protrudes along the width direction in accordance with the cavity wall of the second forming cavity. A second positioning post and a second concave arc surface are sequentially machined on the first side of the second partition facing the first reference surface. The second positioning post is machined at the middle position of the second partition and protrudes from the second concave arc surface. The second partition is machined to form a concave groove on the side facing the first partition and on both sides of the second positioning post. The second positioning post is machined to the bottom cavity arm of the second forming cavity on the side facing the first partition so that a convex groove is formed between the first partition and the second partition.

[0027] Furthermore, step S342 also includes the following sub-steps:

[0028] S3423. Two symmetrical second protrusions and two symmetrical third protrusions are sequentially machined from the third protrusion along the thickness direction to the bottom wall of the second forming cavity. The two second protrusions and the two third protrusions are separated along the width direction. The second protrusion is machined with a straight section and a protruding section protruding from the straight section. The third protrusion is machined with a third concave arc surface to form a rotating shaft.

[0029] Furthermore, in step S4: the material is thinned along the thickness direction from one side of the first reference surface to the edge of the shaft, using the shaft edge as a dividing line, until the auxiliary blank and the rotating shaft are separated.

[0030] The folding machine rotating shaft manufacturing method has at least the following beneficial effects: firstly, a blank is formed by an aluminum extrusion material, a forming blank for forming a product and an auxiliary blank for assisting the formation of the product are formed respectively, the auxiliary blank is fixed and positioned to make it easier to form the product on the forming blank; a groove is processed first to facilitate subsequent blanking and reduce processing difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings described herein are intended to provide further understanding of the present application, form a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation of the present application. In the drawings:

[0032] Figure 1 The processing flow chart of the folding machine rotating shaft manufacturing method of the present application;

[0033] Figure 2 The schematic diagram of the processing after S1 step in the present application;

[0034] Figure 3 The schematic diagram of the processing after S1 step in the present application from another angle;

[0035] Figure 4 The processing flow chart of the sub-step of S2 step in the present application;

[0036] Figure 5 The schematic diagram of the processing after S21 step in the present application;

[0037] Figure 6 The schematic diagram of the processing after S21 step in the present application from another angle;

[0038] Figure 7 The schematic diagram of the processing after S22 step in the present application;

[0039] Figure 8 The processing flow chart of the sub-step of S3 step in the present application;

[0040] Figure 9 The schematic diagram of the processing after S31 step and S32 step in the present application;

[0041] Figure 10 The schematic diagram of the processing after S33 step in the present application;

[0042] Figure 11 The processing flow chart of the sub-step of S34 step in the present application;

[0043] Figure 12 The processing flow chart of the sub-step of S34 step in the present application;

[0044] Figure 13A schematic view of the processing after S342 step in the present application;

[0045] Figure 14 A schematic view of the processing after S342 step in the present application from another angle;

[0046] Figure 15 A schematic view of the processing after S342 step in the present application from still another angle.

[0047] The meanings of the respective reference numerals in the drawings are as follows:

[0048] auxiliary blank 1, first side surface 11, second side surface 12, first reference surface 13, first positioning hole 14, second positioning hole 15, height-limiting strip 161, second height-limiting platform 162, third height-limiting platform 163, second reference surface 17, hanger groove 18, forming blank 2, partition groove 21, first positioning column 22, arc surface 221, flat surface 222, recess 23, second processing surface 231, stepped groove 232, connecting surface 233, first protrusion 234, first-time protrusion 2341, second-time protrusion 2342, shaft edge 24, inner side surface 25, outer side surface 26, hanger hole 27, end block 28, first avoiding groove 281, first edge groove 282, second edge groove 283, second avoiding groove 284, first processing surface 29, third processing surface 30, first protrusion 31, special-shaped protrusion 311, third-time protrusion 312, first forming cavity 32, second forming cavity 33, bottom cavity arm 331, convex recess 332, third protrusion 35, first partition 351, first concave arc surface 352, convex wall 353, second partition 354, second positioning column 354, second concave arc surface 355, second protrusion 356, flat section 3561, convex section 3562, third protrusion 357. DETAILED DESCRIPTION

[0049] The present application will be further described below in conjunction with the drawings.

[0050] Please refer to Figures 1 to 15 In order to describe the embodiments of the present application more clearly, the processing method of the folding machine shaft is used to process the folding electronic product shaft, which comprises a shaft, an outer side surface 26 and an inner side surface 25, and has a first positioning column 22, a second positioning column 354, a first partition 351, a second partition 354 and a plurality of first protrusions 31 on the inner side surface 25. In order to facilitate installation, the shaft also has an end plate at both ends. The inner side surface 25 is open to one side along the thickness direction and is made of a metal material such as AL7N03. The folding machine shaft manufacturing method of the present application comprises the following steps:

[0051] S1, providing a blank, which has a forming blank 2 for forming a shaft and an auxiliary blank 1 connected to both sides of the forming blank 2, and the forming blank 2 is processed with an outer side surface 26 consistent with the product shape.

[0052] Please refer to Figures 1 to 3 , the S1 step: can be formed by aluminum extrusion material blank, but also by die casting, cutting and other ways to form a blank. The blank has a forming blank 2 for forming a shaft and an auxiliary blank 1 connected to both sides of the forming blank 2, the blank has a first side 11 and a second side 12 opposite the first side 11, that is, the forming blank 2 and the auxiliary blank 1 both have a first side 11 and an opposite second side 12, the first side 11 and the second side 12 are distributed along the thickness direction. The embodiment shown is symmetrical to the axis of the forming blank 2, the auxiliary blank 1 can be symmetrically arranged on both sides of the forming blank 2 along the width direction, the second side 12 of the forming blank 2 protrudes from the second side 12 of the auxiliary blank 1, and the first side 11 of the forming blank 2 and the first side 11 of the auxiliary blank 1 are in the same plane and flush, thereby defining the cross section of the forming blank 2 and the auxiliary blank 1 in T shape.

[0053] In this step, the forming blank 2 is located at the middle position of the auxiliary blank 1 along the width direction, and the length direction of the forming blank 2 and the auxiliary blank 1 is consistent and distributed along the length direction. The outer side 26 of the forming blank 2 has an outer side 26 consistent with the outer side 26 of the product, the overall cross section of the forming blank 2 is U-shaped, and the thickness of the forming blank 2 is longer than the outer side 26 in the thickness direction relative to the thickness of the product shape, so as to facilitate subsequent processing. The auxiliary blank 1 is a cuboid structure, so it has four corners, four sides and two sides.

[0054] S2, please refer to Figures 4 to 7 Take the auxiliary blank 1 as auxiliary positioning, process the groove 23 at the forming blank 2 to form a shaft rough blank.

[0055] The S2 step includes the following sub-steps:

[0056] S21, a first reference surface 13 is processed on the first side 11 where the auxiliary blank 1 and the forming blank 2 are flush, and a positioning structure penetrating the auxiliary blank 1 along the thickness direction is processed at the position corresponding to the two auxiliary blanks 1 on the first reference surface 13.

[0057] In the embodiment, the first reference surface 13 is a horizontal surface parallel to the width direction and the length direction, and the four corners of the first reference surface 13 are provided with L-shaped notches, which are formed by avoiding machining the four corners of the first side surface 11, so that the first side surface 11 forms a rectangular first height-limiting platform at the four corners of the first reference surface 13, so as to increase wear and reduce burr formation when the first side surface 11 faces downward to the clamp device for fixing the blank. The first reference surface 13 is formed after machining the part of the first side surface 11 except the four first height-limiting platforms, and therefore, the first reference surface 13 has two opposite long sides and two opposite short sides, a height-limiting strip 161 is provided on the two long sides, the height of the height-limiting strip 161 is consistent with the height of the first height-limiting platform, and the height-limiting strip 161 is formed by avoiding machining the corresponding shape of the first side surface 11 on the first reference surface 13. The height-limiting strip 161 has a square strip structure, and the first side surface 11 avoids the square strip to form the first reference surface 13, thereby forming the height-limiting strip 161. The height-limiting strip 161 has the same effect as the first limiting platform, which can better support the auxiliary blank 1 when the clamp device clamps the auxiliary blank 1, thereby preventing the auxiliary blank 1 from being bent and the like. The positioning structure includes two first positioning holes 14 and two second positioning holes 15 distributed on the two sides of the auxiliary blank 1 along the width direction, and the two first positioning holes 14 are located at the middle position of the auxiliary blank 1 along the length direction, and the two first positioning holes 14 are not on the same straight line along the width direction, so as to make the auxiliary blank 1 and the forming blank 2 more stable when they are positioned by the first positioning holes 14. The four corners of the second side surface 12 are removed along the thickness direction to basically determine the positions of the two ends of the product and the overall length, and the subsequent inner side surface 25 is machined based on this. The first height-limiting platform is removed in this machining process. The two second positioning holes 15 are opened in this step, and the two second positioning holes 15 are distributed at the two diagonal corner positions of the auxiliary blank 1, so as to facilitate subsequent machining.

[0058] In this step, the outer side surface 26 of the forming blank 2 is machined according to the product contour, the second side surface 12 is machined to be flush with the two opposite long sides of the outer side surface 26 to form a second reference surface 17, and the second height-limiting platform 162 is provided on the two opposite long sides of the second reference surface 17. The second height-limiting platform 162 is formed by avoiding machining the second side surface 12 of the auxiliary blank 1, so as to facilitate the clamp device to directly contact the second reference surface 17 when fixing the blank.

[0059] The partition groove 21 is arranged on each of the two long side edges of the outer side 26 in the width direction, and the two partition grooves 21 are arranged on the two side edges of the profiled blank 2 in the width direction, which can be machined by the CNC machining equipment from the two sides of the profiled blank 2 in the width direction to the one side of the profiled blank 2, and the position of the partition groove 21 corresponds to the side edge where the outer side 26 and the inner side 25 of the product are connected, so as to facilitate the subsequent machining of the inner side 25 and the machining based on the partition groove 21 during blanking to complete the separation blanking.

[0060] S22, please refer to Figure 7 The recess 23 is machined from the first reference surface 13 of the profiled blank 2 by using the positioning structure as auxiliary positioning, and the recess 23 has a first machining surface 29 distributed away from the first reference surface 13 in the thickness direction and two second machining surfaces 231 oppositely arranged in the width direction, so as to form a shaft rough blank.

[0061] In the S22 step, the U-shaped hanger groove 18 is arranged on the back of the two auxiliary blanks 1, and the two hanger grooves 18 penetrate in the thickness direction. Among them, the U-shaped hanger groove 18 is arranged on the two long side edges of the two auxiliary blanks 1 away from each other, and the two hanger grooves 18 penetrate in the thickness direction and penetrate backward in the width direction to form an open groove, and the two hanger grooves 18 are distributed in a staggered manner to provide a hanging position during anodic oxidation, so as to facilitate the use of the hanger. It should be noted that the hanger groove 18 and each second height limiting platform 162 are distributed in a staggered manner and do not interfere with each other.

[0062] In this step, the recess 23 is machined from the first reference surface 13 of the profiled blank 2 to the second side 12 side in the thickness direction, the recess 23 is overall in the shape of a cuboid, the side of the recess 23 close to the second side 12 is the first machining surface 29, and the first machining surface 29 is parallel to the first reference surface 13. The two second machining surfaces 231 are parallel to each other and perpendicular to the first machining surface 29, and the recess 23 penetrates the profiled blank 2 in the length direction, so as to facilitate the machining of the inner side 25. In order to facilitate subsequent machining, a slot is machined on the first reference surface 13 of the two auxiliary blanks 1 and on the side of the recess 23 away from the second side 12 in the thickness direction, so as to form an L-shaped step groove 232 on the auxiliary blank 1, the step groove 232 penetrates the first reference surface 13 in the thickness direction, and the step groove 232 penetrates the auxiliary blank 1 in the length direction, and the step groove 232 also penetrates the second machining surface 231 inward in the width direction to communicate with the recess 23, and the step groove 232 is used to reduce the depth of the recess 23, so as to facilitate subsequent machining.

[0063] S3, please refer to Figures 8 to 15 The inner wall of the recess 23 is machined to form a shaft connected to the auxiliary blank 1.

[0064] The S3 step includes the following sub-steps:

[0065] S31, two protruding end blocks 28 are machined on the first machined surface 29 along the thickness direction, and the two end blocks 28 are separately arranged at the two ends of the first machined surface 29 along the length direction. The two end blocks 28 are respectively machined along the thickness direction to form a first avoiding groove 281 which is open to the first reference surface 13.

[0066] The end block 28 in this step is protruded along the thickness direction to the side of the first reference surface 13 and is formed at the same time of forming the groove 23. The end block 28 is in the shape of a cuboid and the length is arranged along the width direction (the width direction of the blank). Then the end block 28 is machined: first, the top surface (the side surface to the first reference surface 13) of the end block 28 is machined, and the first avoiding groove 281 is opened in the middle of the top surface of the end block 28 along the thickness direction, the first avoiding groove 281 is opened along the length of the end block 28, then the two ends of the first avoiding groove 281 are machined to form arc-shaped end surfaces, and then the two end blocks 28 are machined to form a first side groove 282 in the shape of T on the side which is outward along the length direction relative to the first avoiding groove 281, and the corners of the first side groove 282 are all rounded. The second side groove 283 in the shape of arc is machined on the side which is inward along the length direction relative to the first avoiding groove 281, and the second side groove 283 is machined to the first machined surface 29 and then is machined to a certain depth. Then, the outer side wall of the end block 28 is machined to make the two ends of the end block 28 arc-shaped, and the middle of the side surface of the end block 28 which is inward is recessed to form a second avoiding groove 284.

[0067] S32, two second machined surfaces 231 are machined along the thickness direction to thin the two second machined surfaces 231 to form the connecting surfaces 233 which connect the auxiliary blank 1, and a plurality of first protruding blocks 234 which are connected to the first machined surface 29 are symmetrically machined on the two connecting surfaces 233.

[0068] In this step, the two second machined surfaces 231 are sequentially opened in mirror image, which can be machined along the thickness direction from the first reference surface 13 to the side of the second side surface 12, or the machining tool can be located in the groove 23 and machined along the width direction to the side of the second machined surface 231. When machining, the two ends of the second machined surface 231 which are separately arranged along the length direction are respectively thinned to facilitate subsequent machining, and at the same time, the first protruding blocks 234 in the shape of a cuboid are machined, the side surface of the first protruding block 234 which is away from the groove 23 is flush with the outer side surface 26 of the shaped blank 2, and each first protruding block 234 is machined to the first machined surface 29 along the thickness direction.

[0069] The S32 step is: the first processing surface 29 has two first convex blocks 2341 and two second convex blocks 2342 on both sides of the width direction distribution, the two first convex blocks 2341 are located between the two second convex blocks 2342 and are spaced apart, and the two second convex blocks 2342 are arranged at both ends of the connecting surface 233 along the length direction and are connected to the connecting surface 233; the first reference surface 13 of the two auxiliary blanks 1 has a hanger hole 27 passing through along the thickness direction at a position corresponding to each first convex block 2341 along the thickness direction, and the hanger hole 27 is opposite to the hanger groove 18 and the first convex block 2341 along the width direction, the hanger hole 27 is close to the outer side surface 26 of the formed blank 2 and is communicated with the groove 23 on one side close to the groove 23, so that the first convex block 2341 is located in the hanger hole 27. Two hanger holes 27 are arranged on each second processing surface 231, and the hanger hole 27 is arranged to the position of the shaft side 24, which provides a hanging position for the hanger during subsequent anodizing and reduces the material of the formed blank 2.

[0070] S33, please refer to Figure 10 A first forming cavity 32 is machined on the first processing surface 29 along the thickness direction, the first forming cavity 32 has a third processing surface 30 machined on the side away from the first reference surface 13 along the thickness direction, a plurality of first protrusions 31 are machined on the cavity wall of the first forming cavity 32, and shaft sides 24 are machined on both sides of the first forming cavity 32 along the width direction, and the first convex block 234 is connected to the shaft side 24, wherein the first processing surface 29 has an end face machined on the side of the first forming cavity 32 of the first avoiding groove 281, and the middle part of the end face is recessed towards the third processing surface 30, so that both end blocks 28 form end plates.

[0071] In this step, the first forming cavity 32 is formed by processing from one end to the other end in the length direction, the first forming cavity 32 is hollowed out in the processing, and the shape and position of each first protrusion 31 are processed when the cavity wall is processed. The shaft side 24 is processed with the second processing surface 231 as the boundary, the connection between the first forming cavity 32 and the shaft side 24 is chamfered at the position corresponding to the shaft side 24 to separate the first forming cavity 32 and the second processing surface 231, so as to facilitate subsequent further processing. The first protrusion 31 corresponds to the protruding structure of the product inner side 25, and is processed to preliminarily define the position and shape for rough machining. The first protrusion 31 includes a special-shaped protrusion 311 and a third protrusion 312, the special-shaped protrusion 311 is processed with a special-shaped surface, and the special-shaped protrusion 311 is processed with four and is arranged on the two side walls of the first forming cavity 32 in the width direction. The cavity wall of the first forming cavity 32 is processed into an arc shape except the first protrusion 31 and the third processing surface 30, and each third protrusion 312 is processed in the thickness direction with respect to the cavity wall of the second forming cavity 33, and the third protrusion 312 is protruded inwardly from the cavity wall of the first forming cavity 32. The third processing surface 30 is a side surface of the first forming cavity 32 facing the second side surface 12 in the thickness direction, so as to be parallel to the first reference surface 13, and each first protrusion 31 is processed to the third processing surface 30. In this step, the groove wall corresponding to the second avoiding groove 284 of the end block 28 is processed in the thickness direction to retain the second avoiding groove 284, so that the end block 28 forms an end plate.

[0072] S34, processing the third processing surface 30 in the thickness direction to process the second forming cavity 33, a plurality of second protrusions in the second forming cavity 33, and a plurality of third protrusions 35 in the second forming cavity 33.

[0073] The S34 step includes the following sub-steps:

[0074] S341, processing the second protrusion in the thickness direction to process an outer wall surface having an arc surface 221 and a flat surface 222 connected to the arc surface 221, respectively, and a third positioning hole is formed on the side of the second protrusion corresponding to the third processing surface 30 to form a first positioning column 22, the first positioning column 22 is arranged as four and is sequentially formed, and the flat surface 222 of each first positioning column 22 is connected to the side cavity wall of the second forming cavity 33, and the connection between the first positioning column 22 and the second forming cavity 33 is chamfered.

[0075] In this step, the third protrusions 35 are formed in the second protrusion positions along the length direction from one end to the other end of the third processing surface 30. The two first positioning columns 22 are formed on one side along the width direction and symmetrically and spacedly distributed at the two ends of the side. The other two first positioning columns 22 are formed on the other side along the width direction and symmetrically and spacedly distributed at the two ends of the side. The two first positioning columns 22 on the one side are formed in staggered positions with the two first positioning columns 22 on the other side. The third positioning holes are formed on the first positioning columns 22, and the third positioning holes do not penetrate the outer side surface.

[0076] S342, the third protrusions 35 are two and symmetrically distributed along the length direction.

[0077] The S342 includes the following sub-steps:

[0078] S3421, the first partition plates 351 are formed on the third protrusions 35 along the thickness direction to the bottom cavity wall of the second forming cavity 33 (i.e. the cavity wall of the second forming cavity 33 along the thickness direction towards the side away from the first reference surface 13). The first partition plates 351 are convexly formed along the width direction and in accordance with the cavity wall of the second forming cavity 33. The two first concave arc surfaces 352 are formed on the side of the first partition plate 351 towards the first reference surface 13 along the width direction. The convex wall 353 is formed on the side of the first partition plate 351 between the two first concave arc surfaces 352 and away from the other side.

[0079] S3422, the second partition plate 354 is formed on the third protrusion 35 along the thickness direction to the bottom cavity wall of the second forming cavity 33. The two first partition plates 351 of the two third protrusions 35 are located inside the second partition plate 354. The second partition plate 354 is convexly formed along the width direction and in accordance with the cavity wall of the second forming cavity 33. The second positioning column 354 and the second concave arc surface 355 are formed in sequence on the first side 11 of the second partition plate 354 towards the first reference surface 13. The second positioning column 354 is formed at the middle position of the second partition plate 354 and protrudes from the second concave arc surface 355. The concave groove is formed on the side of the second partition plate 354 towards the first partition plate 351 and located on the two sides of the second positioning column 354. The second positioning column 354 is formed on the bottom cavity arm 331 of the second forming cavity 33 towards the first partition plate 351 to form the convex groove 33223 between the first partition plate 351 and the second partition plate 354. The first partition plate 351 and the second partition plate 354 are formed in accordance with the positions of the third protrusions 312, so that the corresponding third protrusions 312 of the first partition plate 351 and the second partition plate 354 are part of the first partition plate 351 and the second partition plate 354. The fourth positioning hole is formed on the second positioning column 354.

[0080] S3423, two pairs of symmetrical second protrusions 356 and two pairs of symmetrical third protrusions 357 are processed in the thickness direction from the third protrusion 35 to the bottom wall of the second forming cavity 33, and the two second protrusions 356 and the two third protrusions 357 are respectively arranged along the width direction. The second protrusion 356 is processed with a flat section 3561 and a protruding section 3562 protruding from the flat section 3561. The third protrusion 357 is processed with a third concave arc surface. The third protrusion 357 is also formed in the first forming cavity 32 corresponding to the third protrusion 312. The third protrusion 357 is formed in correspondence with the position of the corresponding third protrusion 312. The third concave arc surface is formed from the third protrusion 312. Finally, the cavity wall of the second forming cavity 33 is processed. The first forming cavity 32 and the second forming cavity 33 are jointly arranged to form the inner side 25. From this, the shaft is formed. Among them, the first positioning column 22 and the second positioning column 354 are not only the shaft structure, but also for the subsequent blanking to facilitate the subsequent fixing column auxiliary blank 1. When the inner side 25 is processed, the auxiliary blank 1 and the forming blank 2 are cleaned and fully inspected in time to screen out unqualified products. The qualified products will be polished on the outer side 26 to remove burrs, etc. Then fixed by the hanger hole 27 and the hanger groove 18 for anodizing, and then cleaned and fully inspected again. After removing unqualified products, the LOGO is engraved on the outer side 26 of the forming blank 2. Then clean and paste the film.

[0081] In the S4 step: the continuous material surface 233 is thinned from one side of the first reference surface 13 to the shaft edge 24 along the thickness direction with the shaft edge 24 as the division line, until the auxiliary blank 1 and the shaft are separated.

[0082] In this step, the continuous material surface 233 is eliminated by dividing with the shaft edge 24 as the division line, so that the auxiliary blank 1 is separated from the forming blank 2. The forming blank 2 after separation has a complete product outer side 26 and inner side 25 to complete the product processing. Finally, the other parts of the folded electronic product are assembled and shipped.

Claims

1. A method of manufacturing a folding machine rotating shaft, characterized by, The method comprises the following steps: S1, providing a blank, the blank having a forming blank for forming a rotating shaft and auxiliary blanks connected to both sides of the forming blank, the forming blank being processed with an outer side surface consistent with the shape of a product; S2, processing a groove at the forming blank with the auxiliary blanks as auxiliary positioning to form a rotating shaft rough blank; The S2 step comprises the following sub-steps: S21, processing a first reference surface on a first side surface where the auxiliary blanks and the forming blank are flush, and processing positioning structures penetrating the auxiliary blanks in the thickness direction at positions corresponding to the two auxiliary blanks on the first reference surface; S22, processing the groove from the first reference surface of the forming blank with the positioning structures as auxiliary positioning, the groove having a first processing surface distributed away from the first reference surface in the thickness direction and two second processing surfaces oppositely arranged in the width direction to form the rotating shaft rough blank, and the two auxiliary blanks being oppositely arranged with U-shaped hanger grooves penetrating in the thickness direction; S3, processing the inner wall of the groove to form the rotating shaft connected to the auxiliary blanks; The S3 step comprises the following sub-steps: S31, processing two protruding end blocks in the thickness direction on the first processing surface, and the two end blocks being oppositely arranged at the two ends of the first processing surface in the length direction, and the two end blocks being processed in the thickness direction to form first avoiding grooves open to the first reference surface; S32, processing the two second processing surfaces in the thickness direction to thin the two second processing surfaces to form connecting surfaces connected to the auxiliary blanks, and symmetrically processing a plurality of first protrusions connected to the first processing surface on the two connecting surfaces; S33, processing a first forming cavity on the first processing surface in the thickness direction, the first forming cavity being processed with a third processing surface distributed away from the first reference surface in the thickness direction, a plurality of first protrusions being processed on the cavity wall of the first forming cavity, and two shaft edges being processed on the two sides of the first forming cavity in the width direction, and the first protrusions being connected to the shaft edges, wherein an end surface is processed on the first processing surface on the side of the first avoiding grooves facing the first forming cavity, and the middle part of the end surface is recessed toward the third processing surface to form end plates on the two end blocks; S34, processing the third processing surface in the thickness direction to process a second forming cavity, a plurality of second protrusions in the second forming cavity, and a plurality of third protrusions in the second forming cavity; S4, separating the connection between the rotating shaft and the auxiliary blanks to form a rotating shaft product.

2. The folding machine spindle manufacturing method according to claim 1, wherein In the S32 step: the two shaft edges each have two first protrusions and two second protrusions, the two first protrusions are located between the two second protrusions and are spaced apart, and the two second protrusions are oppositely arranged at the two ends of the connecting surface in the length direction and are connected to the connecting surface; a hanger hole is oppositely arranged on the first reference surface of the two auxiliary blanks in the thickness direction and corresponds to each first protrusion, and the hanger hole penetrates the connecting surface in the thickness direction.

3. The folding machine spindle manufacturing method of claim 1 wherein, The S34 step comprises the following sub-steps: S341, the second protrusion is processed in the thickness direction to process the outer wall surface, the outer wall surface has an arc surface and a flat surface connected to the arc surface, and a first positioning groove is formed on one side of the second protrusion corresponding to the third processing surface to form a first positioning column, the first positioning column is provided as four and is sequentially formed, and the flat surface of each first positioning column is connected to the side cavity wall of the second forming cavity, and the connection between the first positioning column and the second forming cavity is chamfered.

4. The folding machine spindle manufacturing method according to claim 3, wherein The S34 step further comprises the following sub-steps: S342, the third protrusion is provided as two and symmetrically distributed along the length direction.

5. The folding machine spindle manufacturing method according to claim 4, wherein The S342 comprises the following sub-steps: S3421, a first partition plate is processed from the third protrusion to the bottom cavity wall of the second forming cavity in the thickness direction, the first partition plate is convex along the width direction and conforms to the cavity wall of the second forming cavity, two first concave arc surfaces are processed on one side of the first partition plate facing the first reference surface in the width direction, and a convex wall is processed on the side of the part between the two first concave arc surfaces and opposite to the first partition plate; S3422, a second partition plate is processed from the third protrusion to the bottom cavity wall of the second forming cavity in the thickness direction, the two first partition plates of the two third protrusions are located inside the second partition plate, the second partition plate is convex along the width direction and conforms to the cavity wall of the second forming cavity, a second positioning column and a second concave arc surface are sequentially processed on the first side of the second partition plate facing the first reference surface, the second positioning column is processed at the middle position of the second partition plate and protrudes from the second concave arc surface, a concave groove is formed on the side of the second partition plate facing the first partition plate and located on both sides of the second positioning column, and the second positioning column is processed to the bottom cavity arm of the second forming cavity on the side facing the first partition plate to form a convex groove between the first partition plate and the second partition plate.

6. The folding machine spindle manufacturing method according to claim 5, wherein The S342 step further comprises the following sub-steps: S3423, two symmetric second protrusions and two symmetric third protrusions are sequentially processed from the third protrusion to the bottom cavity wall of the second forming cavity in the thickness direction, and the two second protrusions and the two third protrusions are separately arranged along the width direction, the second protrusion is processed with a flat section and a convex section protruding from the flat section, and the third protrusion is processed with a third concave arc surface to form a shaft.

7. The folding machine spindle manufacturing method according to claim 6, wherein In the S4 step, the material surface is thinned from one side of the first reference surface to the shaft edge along the thickness direction with the shaft edge as the division line, until the auxiliary blank and the shaft are separated.

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