Positioning spiral gear mold

Abstract

The utility model discloses a positioning spiral gear die which comprises a first positioning pin, an inner upper punch seat, an inner upper punch press cover, an inner upper punch, an outer upper punch, a spiral gear pressing blank, a middle die, a first lower punch, a second lower punch, a second lower punch press cover, a second positioning pin, a second lower punch seat and a third lower punch. The inner upper punch base is located at the upper end of the inner upper punch pressing cover, the outer upper punch is located at the bottom of the inner upper punch, the middle die and the lower punch are located at the top of the second lower punch, and the second positioning pin is located on the second lower punch. According to the positioning spiral gear die, the linear ball bush is arranged between the outer upper punch and the inner upper punch, it is guaranteed that during pressing, the outer punch vertically presses downwards and circumferentially rotates smoothly, the inner upper punch, the second lower punch and the third lower punch are fixed to the die punch base at a certain angle position through the positioning pins arranged on the base flange, and therefore the positioning spiral gear die is formed. Therefore, the upper and lower end face steps or grooves can be pressed and formed according to the designed position relation.

Description

Technical Field

[0001] The utility model relates to the field of positioning spiral gear processing, in particular to a positioning spiral gear mold. Background Art

[0002] The positioning helical gear mold is a supporting device for positioning helical gear processing. It is suitable for pressing powder metallurgy spiral gear parts with multi-step surfaces and positional relationship requirements or non-circular bosses, grooves and other structures. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of positioning helical gear molds.

[0003] The existing positioning helical gear mold has certain drawbacks when used. The helical gear powder metallurgy mold is generally designed with a fixed middle mold and rotating upper and lower punches. Compared with the design of rotating middle mold, this structure has the characteristics of simple mold structure, low mold cost, and high pressing forming reliability. However, because the upper and lower punches need to rotate, it is difficult to align the parts with non-circular bosses or grooves on the upper and lower surfaces, which brings certain adverse effects to people's use process. For this reason, we propose a positioning helical gear mold. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a positioning spiral gear mold, in which a linear ball bushing is provided between the outer upper punch and the inner upper punch to ensure that the outer punch can press vertically downward and rotate circumferentially smoothly during pressing. The inner upper punch, the second lower punch and the third lower punch are fixed on the die seat at a certain angle by arranging positioning pins on the base flange, so that the upper and lower end face steps or grooves can be pressed and formed according to the designed positional relationship, which can effectively solve the problems in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a positioning helical gear mold, including a first positioning pin, an inner upper punch seat, an inner upper punch cover, an inner upper punch, an outer upper punch, a spiral gear blank, a middle die, a lower punch, a second lower punch, a second lower punch cover, a second positioning pin, a second lower punch seat and a third lower punch, the inner upper punch cover is positioned at the top of the inner upper punch, the inner upper punch seat is located at the upper end of the inner upper punch cover, the outer upper punch is located at the bottom of the inner upper punch, the middle die and a lower punch are located at the top of the second lower punch, and the second positioning pin, the second lower punch cover and the second lower punch seat are located on the second lower punch.

[0008] Preferably, the outer upper punch is provided with an outer upper punch head, a linear ball bushing, a first upper spiral gasket, an outer upper punch cover, a ball screw, a first lower spiral gasket and an outer upper punch seat, the linear ball bushing is located inside the outer upper punch, the outer upper punch seat is located at the bottom of the outer upper punch, and the outer upper punch head, the first upper spiral gasket, the outer upper punch cover and the ball screw are located on the outside of the outer upper punch.

[0009] Preferably, the lower punch is provided with a lower punch inner seat, a lower punch outer seat, a second upper spiral gasket, a lower punch cover, a second lower spiral gasket, a lower punch seat, an outer upper punch cover and a ball bearing, the lower punch seat is located at the bottom of the lower punch, and the lower punch inner seat, a lower punch outer seat, the second upper spiral gasket and a lower punch cover are located at the outer side of the lower punch.

[0010] Preferably, the outer upper punch is snap-fitted and positioned with the linear ball bushing, the outer upper punch is integrally positioned with the outer upper punch seat, and the outer upper punch is fixed with the outer upper punch head, the linear ball bushing, the first upper spiral gasket, the outer upper punch cover, the ball screw, the first lower spiral gasket and the outer upper punch seat.

[0011] Preferably, the lower punch is integrally positioned with a lower punch seat, and the lower punch is positioned and installed with a lower punch inner seat, a lower punch outer seat, a second upper spiral gasket and a lower punch cover.

[0012] Preferably, the first positioning pin, inner upper punch seat, inner upper punch cover, inner upper punch, outer upper punch, spiral gear blank, middle die, first lower punch, second lower punch, second lower punch cover, second positioning pin, second lower punch seat and third lower punch are positioned from top to bottom.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a positioning helical gear mold, which has the following beneficial effects: the positioning helical gear mold innovatively adopts a combination structure of inner and outer layers in the design of a lower punch, the outer ring part is a rotatable structure, and the inner ring part is fixed to the base by positioning pins and screws and does not rotate. Three layers of spiral gaskets are provided at the lower part of the outer ring base flange, and two layers of spiral gaskets are provided at the upper part of the flange. Spiral grooves are provided on both sides of the spiral gaskets for storing lubricating oil. After assembly, a layer of oil film will be generated between the base and the spiral gaskets and the gaskets, which can greatly reduce the friction during rotation. In addition, two layers of stainless steel deep groove ball bearings are provided between the inner and outer layers at the bottom of the punch, and an annular oil groove is also processed at the lower part of the inner punch for storing lubricating oil. Through these innovative designs, the combined punch can realize the smooth rotation of the outer ring part in the middle die during pressing, while the inner layer part is fixed. In order to reduce the friction during rotation, a linear ball bushing is provided between the outer upper punch and the inner upper punch to ensure that the outer punch can press vertically and rotate circumferentially smoothly during pressing. The inner upper punch, the second lower punch and the third lower punch are fixed on the die punch seat at a certain angle by setting positioning pins on the base flange, so that the upper and lower end surface steps or grooves can be pressed and formed according to the designed position relationship. The entire positioning spiral gear mold has a simple structure and is easy to operate. The effect of use is better than that of the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a positioning spiral gear mold.

[0016] Figure 2 The utility model is a structural schematic diagram of a middle mold of a positioning spiral gear mold.

[0017] Figure 3 The utility model is a schematic structural diagram of the outer upper punch of a positioning spiral gear mold.

[0018] Figure 4 It is a structural schematic diagram of a lower punch in a positioning helical gear mold of the utility model.

[0019] In the figure: 1. first locating pin; 2. inner upper punch seat; 3. inner upper punch cover; 4. inner upper punch; 5. outer upper punch; 6. spiral gear blank; 7. middle die; 8. lower punch; 9. second lower punch; 10. second lower punch cover; 11. second locating pin; 12. second lower punch seat; 13. third lower punch; 14. outer upper punch; 15. linear ball bushing; 16. first upper spiral gasket; 17. outer upper punch cover; 18. ball screw; 19. first lower spiral gasket; 20. outer upper punch seat; 21. inner seat of a lower punch; 22. outer seat of a lower punch; 23. second upper spiral gasket; 24. a lower punch cover; 25. second lower spiral gasket; 26. a lower punch seat; 27. ball bearing. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-4As shown, a positioning helical gear mold comprises a first locating pin 1, an inner upper punch seat 2, an inner upper punch cover 3, an inner upper punch 4, an outer upper punch 5, a helical gear blank 6, a middle die 7, a lower punch 8, a second lower punch 9, a second lower punch cover 10, a second locating pin 11, a second lower punch seat 12 and a third lower punch 13. The inner upper punch cover 3 is positioned at the top of the inner upper punch 4, the inner upper punch seat 2 is located at the upper end of the inner upper punch cover 3, the outer upper punch 5 is located at the bottom of the inner upper punch 4, the middle die 7 and a lower punch 8 are located at the top of the second lower punch 9, the second locating pin 11, the second lower punch cover 10 and the second lower punch seat 12 are located on the second lower punch 9, a linear ball bushing is provided between the outer upper punch and the inner upper punch to ensure that the outer punch can be pressed vertically and rotated circumferentially smoothly during pressing, the inner upper punch, the second lower punch and the third lower punch are fixed on the punch seat at a certain angle by setting locating pins on the base flange, so that the upper and lower end face steps or grooves can be pressed and formed according to the designed positional relationship.

[0024] Furthermore, the outer upper punch 5 is provided with an outer upper punch head 14, a linear ball bushing 15, a first upper spiral gasket 16, an outer upper punch cover 17, a ball screw 18, a first lower spiral gasket 19 and an outer upper punch seat 20. The linear ball bushing 15 is located inside the outer upper punch 5, the outer upper punch seat 20 is located at the bottom of the outer upper punch 5, and the outer upper punch head 14, the first upper spiral gasket 16, the outer upper punch cover 17 and the ball screw 18 are located on the outside of the outer upper punch 5.

[0025] Furthermore, a lower punch inner seat 21, a lower punch outer seat 22, a second upper spiral gasket 23, a lower punch cover 24, a second lower spiral gasket 25, a lower punch seat 26, an outer upper punch cover 17 and a ball bearing 27 are provided on the lower punch 8. The lower punch seat 26 is located at the bottom position of the lower punch 8, and the lower punch inner seat 21, the lower punch outer seat 22, the second upper spiral gasket 23 and the lower punch cover 24 are located at the outer position of the lower punch 8.

[0026] Furthermore, the outer upper punch 5 is engaged and positioned with the linear ball bushing 15, the outer upper punch 5 is integrally positioned with the outer upper punch seat 20, and the outer upper punch 5 is fixed to the outer upper punch head 14, the linear ball bushing 15, the first upper spiral gasket 16, the outer upper punch cover 17, the ball screw 18, the first lower spiral gasket 19 and the outer upper punch seat 20.

[0027] Furthermore, a lower punch 8 is integrally positioned with a lower punch seat 26 , and a lower punch 8 is positioned and installed with a lower punch inner seat 21 , a lower punch outer seat 22 , a second upper spiral gasket 23 and a lower punch cover 24 .

[0028] Furthermore, the first locating pin 1, the inner upper punch seat 2, the inner upper punch cover 3, the inner upper punch 4, the outer upper punch 5, the spiral gear blank 6, the middle die 7, the first lower punch 8, the second lower punch 9, the second lower punch cover 10, the second locating pin 11, the second lower punch seat 12 and the third lower punch 13 are positioned from top to bottom.

[0029] Working principle: The utility model includes a first locating pin 1, an inner upper punch seat 2, an inner upper punch cover 3, an inner upper punch 4, an outer upper punch 5, a spiral gear blank 6, a middle die 7, a lower punch 8, a second lower punch 9, a second lower punch cover 10, a second locating pin 11, a second lower punch seat 12, a third lower punch 13, an outer upper punch 14, a linear ball bushing 15, a first upper spiral gasket 16, an outer upper punch cover 17, a ball screw 18, a first lower spiral gasket 19, an outer upper punch seat 20, a lower punch inner seat 21, a lower punch outer seat 22, a second upper spiral gasket 23, a lower punch cover 24, a second lower spiral gasket 25, a lower punch seat 26 and a ball bearing 27. In the design of the lower punch, an innovative combination structure of inner and outer layers is adopted. The outer ring part is a rotatable structure, and the inner ring part is fixed to the base by locating pins and screws and does not rotate. There are 3 layers of spiral gaskets at the bottom of the outer ring base flange, and 2 layers of spiral gaskets at the top of the flange. There are spiral grooves on both sides of the spiral gaskets for storing lubricating oil. After assembly, an oil film will be generated between the base and the spiral gaskets and the gaskets, which can greatly reduce the friction during rotation. In addition, there are 2 layers of stainless steel deep groove ball bearings between the inner and outer layers at the bottom of the punch, and the lower part of the inner punch is also processed with an annular oil groove for storing lubricating oil. Through these innovative designs, the combined punch can realize the smooth rotation of the outer ring part in the middle die during pressing, while the inner part is fixed. In order to reduce the friction during rotation, a linear ball bushing is provided between the outer upper punch and the inner upper punch to ensure that the outer punch can be pressed vertically and rotated circumferentially smoothly during pressing. The inner upper punch, the second lower punch, and the third lower punch are fixed on the die punch seat at a certain angle through the positioning pins set on the base flange, so that the upper and lower end face steps or grooves can be pressed and formed according to the designed position relationship.

[0030] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A positioning helical gear die, comprising a first positioning pin (1), an inner upper punch seat (2), an inner upper punch cover (3), an inner upper punch (4), an outer upper punch (5), a helical gear blank (6), a middle die (7), a lower punch (8), a second lower punch (9), a second lower punch cover (10), a second positioning pin (11), a second lower punch seat (12) and a third lower punch (13), characterized in that: The inner upper punch cover (3) is positioned at the top of the inner upper punch (4), the inner upper punch seat (2) is located at the upper end of the inner upper punch cover (3), the outer upper punch (5) is located at the bottom of the inner upper punch (4), the middle die (7) and the lower punch (8) are located at the top of the second lower punch (9), and the second positioning pin (11), the second lower punch cover (10) and the second lower punch seat (12) are located on the second lower punch (9).

2. A positioning helical gear mold according to claim 1, characterized in that: The outer upper punch (5) is provided with an outer upper punch head (14), a linear ball bushing (15), a first upper spiral gasket (16), an outer upper punch cover (17), a ball screw (18), a first lower spiral gasket (19) and an outer upper punch seat (20); the linear ball bushing (15) is located inside the outer upper punch (5); the outer upper punch seat (20) is located at the bottom of the outer upper punch (5); the outer upper punch head (14), the first upper spiral gasket (16), the outer upper punch cover (17) and the ball screw (18) are located on the outside of the outer upper punch (5).

3. A positioning helical gear mold according to claim 1, characterized in that: The lower punch (8) is provided with a lower punch inner seat (21), a lower punch outer seat (22), a second upper spiral gasket (23), a lower punch cover (24), a second lower spiral gasket (25), a lower punch seat (26), an outer upper punch cover (17) and a ball bearing (27); the lower punch seat (26) is located at the bottom of the lower punch (8); the lower punch inner seat (21), the lower punch outer seat (22), the second upper spiral gasket (23) and the lower punch cover (24) are located at the outer side of the lower punch (8).

4. A positioning helical gear mold according to claim 2, characterized in that: The outer upper punch (5) is snap-fitted and positioned with the linear ball bushing (15), the outer upper punch (5) is integrally positioned with the outer upper punch seat (20), and the outer upper punch (5) is fixed with the outer upper punch head (14), the linear ball bushing (15), the first upper spiral gasket (16), the outer upper punch cover (17), the ball screw (18), the first lower spiral gasket (19) and the outer upper punch seat (20).

5. The positioning helical gear mold according to claim 3, characterized in that: The lower punch (8) is integrally positioned with a lower punch seat (26), and the lower punch (8) is positioned and installed with a lower punch inner seat (21), a lower punch outer seat (22), a second upper spiral gasket (23) and a lower punch cover (24).

6. The positioning helical gear mold according to claim 1, characterized in that: The first positioning pin (1), the inner upper punch seat (2), the inner upper punch cover (3), the inner upper punch (4), the outer upper punch (5), the helical gear blank (6), the middle die (7), the lower punch (8), the second lower punch (9), the second lower punch cover (10), the second positioning pin (11), the second lower punch seat (12) and the third lower punch (13) are positioned from top to bottom.

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