Adjustable axial pattern rolling head

Abstract

The invention discloses a rolling head, belongs to the technical field of pattern rolling tools, and particularly relates to an adjustable axial pattern rolling head which comprises a tail handle, a shell, an upper cover plate, a middle plate, a cover plate, a gear assembly and a rolling assembly. The cover plate is fixedly installed on the middle plate, the rolling assembly is installed between the upper cover plate and the cover plate, the shell is fixedly installed below the middle plate, and the tail handle is connected into the shell in a sleeved mode. The gear assembly is located in the shell and connected with the tail handle and the rolling assembly at the same time so that the gear assembly can drive the rolling assembly to rotate and conduct rolling work along with rotation of the tail handle. The structure of the pattern rolling head is designed for special industries, the investment cost is reduced, the debugging difficulty is lowered, and the structure of the pattern rolling head is simplified; operation is easy, the pattern rolling range can be adjusted, and maintenance is efficient.

Description

Technical Field

[0001] The invention discloses a rolling head, belongs to the technical field of pattern rolling tools, and particularly relates to an adjustable axial pattern rolling head. Background Art

[0002] Pattern rolling technology belongs to the fields of mechanical manufacturing, metal forming and metal parts surface strengthening technology. It is a non-cutting process that uses tools to shape and deform metal materials to form patterns on workpieces. The patterns formed in this way have high dimensional accuracy, surface quality and material strength, and high production efficiency.

[0003] Rolling technology originated in the early 20th century. With the development of metal plastic deformation theory and the progress of practical application, it has gradually become an efficient and energy-saving precision forming process. The technical background mainly includes the following aspects: Material science and mechanics foundation: Rolling processing relies on the plastic deformation ability of metal materials, that is, under a certain pressure, metal materials can undergo permanent shape changes without destroying their internal continuity. This requires that the materials used have good plasticity and strain hardening properties. Advances in mechanical manufacturing technology: With the improvement of mold design and manufacturing accuracy, as well as the research and development of high-efficiency and high-precision rolling equipment, rolling technology has been realized and gradually improved. This technology uses a special knurling wheel or rolling die to extrude the workpiece to form a pattern. Energy-saving and environmental protection requirements: Compared with traditional cutting methods, pattern rolling processing belongs to the category of chipless processing, which not only reduces the generation of cutting waste, but also reduces energy consumption, which meets the requirements of modern industrial production for green manufacturing and sustainable development. The need to improve quality and reduce costs: The pattern formed by pattern rolling has a high surface finish, improved fatigue strength and tensile strength, while improving production efficiency and reducing unit costs. Therefore, it has been widely used in many industries such as aerospace, automobile manufacturing, fastener production and other fields.

[0004] Disadvantages of pattern rolling heads in the prior art:

[0005] High material requirements: The pattern rolling process has specific requirements for the plasticity and hardness of the workpiece material. It is not suitable for materials with too high or too low hardness and poor plasticity. For example, materials with too high hardness may not be able to form patterns through rolling or cause the roller to wear quickly.

[0006] Strict control of initial blank size: Before pattern rolling, the blank size must be accurate and consistent. Otherwise, the blank may be too large, causing excessive roller pressure and equipment damage, or it may be too small to form a complete thread.

[0007] Equipment investment and mold cost: Pattern rolling equipment and the corresponding roller molds are usually more expensive than ordinary cutting machine tools, especially when customizing molds of special specifications, the initial investment cost is higher.

[0008] Process adjustment is difficult: once the rolling parameters are determined, changing the pattern size or type often requires replacing a new mold and re-adjusting the process parameters, which increases the challenge of production flexibility to a certain extent.

[0009] Difficulty of quality control: During the pattern rolling process, if the operation is improper or the equipment is in poor condition, defects are likely to occur, such as inaccurate pattern shape, increased pattern bottom diameter, and distorted pattern tooth shape. These require precise quality control methods to detect and prevent them.

[0010] Not suitable for complex or non-standard patterns: For unconventional pitches, large diameter changes, special shapes or other non-standard patterns, the application of pattern rolling technology will be limited due to the lack of ready-made roller molds. Summary of the invention

[0011] Purpose of the invention: To provide an adjustable axial pattern rolling head to solve the above-mentioned problems of low production efficiency, high tool cost and unstable pattern quality.

[0012] Technical solution: An adjustable axial pattern rolling head, the rolling head includes: a tail handle, a shell, an upper cover plate, an intermediate plate, a cover plate, a gear assembly and a rolling assembly

[0013] The cover plate is fixedly mounted on the middle plate, the rolling assembly is mounted between the upper cover plate and the cover plate, the shell is fixedly mounted under the middle plate, the tail handle is sleeved in the shell, the gear assembly is located in the shell and is connected to the tail handle and the rolling assembly at the same time so that as the tail handle rotates, the rolling assembly is driven to rotate and perform rolling operations through the gear assembly.

[0014] In a further embodiment, the rolling assembly includes: an eccentric shaft, one end of which is located in the upper cover plate, and the other end of which passes through the cover plate and the middle plate in sequence to the shell; a sleeve, which is sleeved on the eccentric shaft and located between the upper cover plate and the cover plate to rotate with the eccentric shaft; a rolling wheel, which is sleeved on the sleeve to rotate with the sleeve, and the rolling wheel is provided with teeth.

[0015] In a further embodiment, the rolling assemblies are provided in three groups and are arranged in a circumferentially equidistant array.

[0016] In a further embodiment, the shell and the upper cover plate are fixedly connected by a plurality of threaded shafts, and the threaded shafts are arranged in a circular equidistant array. One end of the threaded shaft is fixedly connected to the upper cover plate by a screw, and the other end passes through the cover plate and the middle plate in sequence to the bottom of the shell and is fixed by a nut.

[0017] In a further embodiment, the gear assembly includes: a driving gear, which is fixedly mounted on one end of the tail handle through a key connection and is located in the housing; a first driven gear, which is sleeved on the other end of the eccentric shaft and meshed with the driving gear to drive the eccentric shaft to rotate; a second driven gear, which is sleeved on the eccentric shaft and is located between the cover plate and the middle plate to rotate with the eccentric shaft; a main wheel, which is located in the central groove of the middle plate and meshed with the second driven gear to rotate with the second driven gear; there is no contact between the main wheel and the driving gear.

[0018] In a further embodiment, a backing ring is provided between the second driven gear and the shaft sleeve.

[0019] In a further embodiment, a vortex spring is provided in the housing, and the vortex spring is sleeved on the outer side of the tail handle and is clamped with the housing.

[0020] In a further embodiment, a chip guard plate is provided at the bottom of the housing.

[0021] Beneficial effects: The structure of the pattern rolling head of the present invention is designed for special industries: it reduces investment costs, reduces debugging difficulty, simplifies the structure of the pattern rolling head; it is easy to operate, the pattern rolling range is adjustable, and maintenance is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axonometric view of the present invention.

[0023] Figure 2 It is a cross-sectional view of the present invention.

[0024] Figure 3 It is an exploded view of the present invention.

[0025] Figure numerals: tail handle 18, housing 16, upper cover plate 2, middle plate 11, cover plate 8, rolling assembly 20, eccentric shaft 6, sleeve 5, rolling wheel 3, threaded shaft 4, screw 1, nut 12, driving gear 14, first driven gear 13, second driven gear 9, main wheel 10, washer 7, vortex spring 15, chip guard plate 17. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] An adjustable axial pattern rolling head, the rolling head comprising: a tail handle 18, a housing 16, an upper cover plate 2, an intermediate plate 11, a cover plate 8, a gear assembly and a rolling assembly 20;

[0028] In one embodiment, Figures 1 to 3 As shown, the cover plate 8 is fixedly mounted on the middle plate 11, the rolling assembly 20 is installed between the upper cover plate 2 and the cover plate 8, the shell 16 is fixedly mounted under the middle plate 11, the tail handle 18 is sleeved in the shell 16, the gear assembly is located in the shell 16 and is connected to the tail handle 18 and the rolling assembly 20 at the same time so that as the tail handle 18 rotates, the rolling assembly 20 is driven to rotate through the gear assembly to perform rolling work.

[0029] In one embodiment, Figures 1 to 3 As shown, the rolling assembly 20 includes: an eccentric shaft 6, one end of which is located in the upper cover plate 2, and the other end of which passes through the cover plate 8 and the middle plate 11 in sequence to the shell 16; a sleeve 5, which is sleeved on the eccentric shaft 6 and is located between the upper cover plate 2 and the cover plate 8 to rotate with the eccentric shaft 6; a rolling wheel 3, which is sleeved on the sleeve 5 to rotate with the sleeve 5, and the rolling wheel 3 is provided with teeth.

[0030] In one embodiment, Figures 1 to 3 As shown, the rolling assemblies 20 are provided in three groups and are arranged in a circumferentially equidistant array.

[0031] In one embodiment, Figures 1 to 3 As shown, the shell 16 is fixedly connected to the upper cover plate 2 by a plurality of threaded shafts 4, and the threaded shafts 4 are arranged in a circular equidistant array. One end of the threaded shaft 4 is fixedly connected to the upper cover plate 2 by a screw 1, and the other end passes through the cover plate 8 and the middle plate 11 in sequence to the bottom of the shell 16, and is fixed by a nut 12.

[0032] In one embodiment, Figures 1 to 3As shown, the gear assembly includes: a driving gear 14, which is fixedly mounted on one end of the tail handle 18 through a key connection and is located in the housing 16; a first driven gear 13, which is sleeved on the other end of the eccentric shaft 6 and meshed with the driving gear 14 to drive the eccentric shaft 6 to rotate; a second driven gear 9, which is sleeved on the eccentric shaft 6 and is located between the cover plate 8 and the middle plate 11 to rotate with the eccentric shaft 6; a main wheel 10, which is located in the central groove of the middle plate 11 and meshed with the second driven gear 9 to rotate with the second driven gear 9; the main wheel 10 and the driving gear 14 are not in contact with each other.

[0033] In one embodiment, Figures 1 to 3 As shown, a backing ring 7 is provided between the second driven gear 9 and the shaft sleeve 5 .

[0034] In one embodiment, Figures 1 to 3 As shown, a vortex spring 15 is disposed in the housing 16 , and the vortex spring 15 is sleeved on the outer side of the tail handle 18 and is engaged with the housing 16 .

[0035] In one embodiment, Figures 1 to 3 As shown, a chip guard plate 17 is provided at the bottom of the housing 16 .

[0036] In one embodiment, Figures 1 to 3 As shown, the present invention is mainly based on the principle of plastic deformation. The specific process is as follows: the pattern rolling tool is usually composed of one or more knurling wheels corresponding to the desired pattern shape, and the tooth shape of these knurling wheels is completely consistent with the shape of the pattern to be processed. During the pattern rolling process, the high-speed rotating knurling wheel exerts a large axial pressure and rolling friction on the surface of the workpiece. Under this strong pressure, the workpiece material (such as a steel rod, etc.) undergoes plastic deformation when passing through the knurling wheel instead of cutting and removing the material, thereby forming a continuous and precise pattern shape on the workpiece surface. Since the pattern formed by rolling is generated by the flow of material, the pattern fibers are continuous and there is no obvious cut surface, thereby improving the strength and wear resistance of the pattern, while avoiding burrs, stress concentration and other problems generated during cutting. The entire pattern rolling process is efficient and fast, which not only improves production efficiency, but also facilitates chip-free or low-chip processing, which is more environmentally friendly and energy-saving.

[0037] In one embodiment, Figures 1 to 3 As shown, the installation steps of the present invention are as follows:

[0038] The threaded shaft 4 is fixed to the middle plate 11 through the cover plate 8, the housing 16, and the chip guard plate 17; it is locked by the nut 12; the eccentric shaft 6 is fixed to the middle plate 11 through the cover plate 8, the driven mechanism, the transmission wheel, and the first driven gear 13;

[0039] Install the sleeve 5 on the eccentric shaft 6;

[0040] Install the roller on the shaft sleeve 5;

[0041] Connect the upper cover plate 2 to the threaded shaft 4 by means of screws 1;

[0042] The driving gear 14 and the first driven gear 13 are mounted on the middle plate 11;

[0043] Pass the tail handle 18 through the housing 16 and the chip guard plate 17 ; install the vortex spring 15 on the housing 16 , and lock the middle plate 11 and the chip guard plate 17 with the nut 12 .

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An adjustable axial pattern rolling head, characterized in that: The rolling head comprises: a tail handle, a shell, an upper cover plate, an intermediate plate, a cover plate, a gear assembly and a rolling assembly; The cover plate is fixedly mounted on the middle plate, the rolling assembly is mounted between the upper cover plate and the cover plate, the shell is fixedly mounted under the middle plate, the tail handle is sleeved in the shell, the gear assembly is located in the shell and is connected to the tail handle and the rolling assembly at the same time so that as the tail handle rotates, the rolling assembly is driven to rotate and perform rolling operations through the gear assembly.

2. The adjustable axial pattern rolling head according to claim 1, characterized in that: The rolling assembly includes: an eccentric shaft, one end of which is located in the upper cover plate, and the other end of which passes through the cover plate and the middle plate in sequence to the shell; a sleeve, which is sleeved on the eccentric shaft and located between the upper cover plate and the cover plate to rotate with the eccentric shaft; a rolling wheel, which is sleeved on the sleeve to rotate with the sleeve, and the rolling wheel is provided with teeth.

3. The adjustable axial pattern rolling head according to claim 2, characterized in that: The rolling components are provided with three groups and are arranged in a circumferentially equidistant array.

4. The adjustable axial pattern rolling head according to claim 1, characterized in that: The shell and the upper cover are fixedly connected by a plurality of threaded shafts, and the threaded shafts are arranged in a circular equidistant array. One end of the threaded shaft is fixedly connected to the upper cover by a screw, and the other end passes through the cover plate and the middle plate in sequence to the bottom of the shell and is fixed by a nut.

5. The adjustable axial pattern rolling head according to claim 2, characterized in that: The gear assembly includes: a driving gear, which is fixedly mounted on one end of the tail handle through a key connection and is located in the housing; a first driven gear, which is sleeved on the other end of the eccentric shaft and meshed with the driving gear to drive the eccentric shaft to rotate; a second driven gear, which is sleeved on the eccentric shaft and is located between the cover plate and the middle plate to rotate with the eccentric shaft; a main wheel, which is located in the central groove of the middle plate and meshed with the second driven gear to rotate with the second driven gear; the main wheel is not in contact with the driving gear.

6. The adjustable axial pattern rolling head according to claim 5, characterized in that: A backing ring is provided between the second driven gear and the shaft sleeve.

7. The adjustable axial pattern rolling head according to claim 1, characterized in that: A vortex spring is arranged in the shell, and the vortex spring is sleeved on the outer side of the tail handle and is clamped with the shell.

8. The adjustable axial pattern rolling head according to claim 1, characterized in that: A chip guard plate is provided at the bottom of the shell.

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