High-efficiency and energy-saving voice coil motor manufacturing method and voice coil motor

Abstract

The invention relates to an efficient and energy-saving voice coil motor manufacturing method, which comprises the following steps of: respectively cutting a coil bracket bottom plate and a shell bracket bottom plate by using two plate-shaped materials, and respectively processing a coil bracket tube and a shell bracket tube by using two strip-shaped materials; one plate surface of the coil support bottom plate is processed to form a first connecting part, one end of the coil support pipe is processed to form a second connecting part, the second connecting part is matched with the first connecting part, and the second connecting part and the first connecting part can be fixedly connected and assembled to form a coil support part of the voice coil motor; and one plate surface of the shell support bottom plate is processed to form a third connecting part, one end of the shell support pipe is processed to form a fourth connecting part, and the third connecting part is matched with the fourth connecting part, and the third connecting part and the fourth connecting part can be fixedly connected and assembled to form a shell support part of the voice coil motor. The coil support part is disassembled into the coil support pipe and the coil support bottom plate which are respectively processed, and corresponding materials are selected for processing according to the accurate size of each part, so that the problems of loss of a large amount of redundant materials and relatively long consumed time are solved.

Description

Technical Field

[0001] The present invention relates to the field of voice coil motor production and manufacturing, and in particular to a method for producing a voice coil motor with high efficiency and energy saving, and a voice coil motor. Background Art

[0002] The voice coil motor with elastic vibration structure includes four parts: coil support part, shell support part, magnet assembly, elastic part, and the coil support part and shell support part are the motor mover and stator to each other. Among them, the coil support part includes a coil support tube and a coil support bottom plate, and the coil support tube is a columnar body, and one end is connected to the coil support bottom plate. The shell support part includes a shell support tube and a shell support bottom plate, and the shell support tube is a columnar body, and one end is connected to the shell support bottom plate.

[0003] The magnet assembly is placed in the coil support tube, and the outer surface of the coil support tube is provided with a plurality of coil skeletons, which are used to wind the coil; the outer shell support tube is sleeved on the outside of the coil support tube with the coil wound thereon; the hollow cylindrical elastic part is sleeved on the outside of the outer shell support tube, and one end of the elastic part is against the bottom plate of the coil support, and the other end of the elastic part is against the bottom plate of the outer shell support, so that the assembly of the coil support part and the outer shell support part is completed. When the coil is passed through an alternating current, in the magnetic field environment generated by the magnet assembly, the coil is subjected to the Lorentz force and generates reciprocating linear motion, and the coil support tube is driven by the coil skeleton, so that the coil support part reciprocates linearly relative to the outer shell support part. During the motion, the elastic part between the bottom plate of the outer shell support and the bottom plate of the coil support is squeezed and contracts, or the squeezing force is released and extends.

[0004] As far as the current production status of voice coil motors is concerned, the coil bracket part and the shell bracket part generally adopt an integrated structure. This processing method relies on the processing of the whole material, which wastes time and materials. Taking the coil bracket part as an example, a large piece of raw material needs to be prepared in the early stage, and its volume must include the total volume of the coil bracket tube and the base plate to ensure that the complete coil bracket part can be processed. Subsequently, lathes, milling machines and other equipment are used to gradually remove excess materials until the coil bracket tube and coil bracket base plate of the integrated structure are formed. This processing method requires a large piece of material. From the beginning of processing to the formation of the structure, the continuous processing time is long, and there are also tricky processing difficulties at the connection between the coil bracket tube and the coil base plate, which undoubtedly further prolongs the working time. During the entire processing process, a large amount of redundant materials were cut and discarded, and the consumables phenomenon was extremely serious.

[0005] It can be seen that the traditional voice coil motor processing and manufacturing methods have serious resource waste problems in terms of processing efficiency and materials, resulting in high cost of voice coil motors. In view of this, the industry urgently needs an efficient and energy-saving voice coil motor processing and manufacturing method to help companies reduce costs and enhance market competitiveness. Summary of the invention

[0006] In order to overcome the serious resource waste problem in both processing efficiency and material usage in the existing voice coil motor processing and manufacturing methods, the present invention provides a high-efficiency and energy-saving voice coil motor manufacturing method and a voice coil motor.

[0007] The technical solution of the present invention is as follows:

[0008] A method for manufacturing a voice coil motor with high efficiency and energy saving, comprising: selecting two types of plate materials to cut a coil support bottom plate and a shell support bottom plate respectively, selecting two types of strip materials to process a coil support tube and a shell support tube respectively; processing a plate surface of the coil support bottom plate to form a first connection part, processing one end of the coil support tube to form a second connection part, and the second connection part is matched with the first connection part, and the two can be fastened and assembled into a coil support part of a voice coil motor; processing a plate surface of the shell support bottom plate to form a third connection part, processing one end of the shell support tube to form a fourth connection part, and the third connection part is matched with the fourth connection part, and the two can be fastened and assembled into a shell support part of a voice coil motor.

[0009] As a preferred technical solution of the present invention, the step of selecting two types of plate materials to cut the coil support bottom plate and the shell support bottom plate respectively comprises:

[0010] Obtain a plate material with dimensions larger than the target plate size, set the required length, width and thickness of the coil bracket bottom plate and the shell bracket bottom plate according to the design parameters of the voice coil motor, and use the cutting equipment to cut small plates that meet the size requirements from the corresponding plate material along the cutting route to serve as the coil bracket bottom plate and the shell bracket bottom plate.

[0011] As a preferred technical solution of the present invention, the step of selecting two strip materials to respectively process the coil support tube and the shell support tube specifically includes:

[0012] Obtain a strip material with a size specification larger than the target cylinder size, the strip material is hollow or solid, and process the shape of the strip material, specifically including processing the outer diameter of the strip material and processing the coil skeleton of the strip material used as the coil support tube; according to the required lengths of the coil support tube and the shell support tube, cut the corresponding strip material that has been initially processed into small sections that meet the size requirements to serve as the coil support tube and the shell support tube.

[0013] As a preferred technical solution of the present invention, the plate material of the coil support bottom plate is made of aluminum, and the plate material of the outer shell support bottom plate is made of steel or iron; the strip material of the coil support tube is made of aluminum, and the strip material of the outer shell support tube is made of steel or iron.

[0014] As a preferred technical solution of the present invention, the first connecting part is a circular groove with a first inner diameter, and the second connecting part is a coil cylinder end with a first outer diameter, and the first inner diameter and the first outer diameter are interference fit or transition fit, so that the coil cylinder end of the coil support tube is tightly inserted into the circular groove of the coil support bottom plate.

[0015] Furthermore, the step of processing a surface of the coil support bottom plate to form a first connection portion, processing one end of the coil support tube to form a second connection portion, and the second connection portion is adapted to the first connection portion, specifically includes:

[0016] The preliminarily processed coil support base plate is mounted on a processing platform, and a milling cutter with a suitable diameter on a CNC milling machine is used to mill a circular groove with a first inner diameter at the center of one of the plate surfaces of the coil support base plate by a step-by-step milling method, so as to serve as the first connecting portion;

[0017] The coil support tube preliminarily processed into small sections is installed on a processing platform, and the end of the coil support tube is processed so that it has a coil column end with a first outer diameter, which serves as the second connecting portion.

[0018] As a preferred technical solution of the present invention, the first connecting part is a circular boss with a second outer diameter, and the second connecting part is a coil cylinder end with a second inner diameter, and the second outer diameter and the second inner diameter are interference fit or transition fit, so that the circular boss of the coil support base plate is tightly inserted into the coil cylinder end of the coil support tube.

[0019] Furthermore, the step of processing a surface of the coil support bottom plate to form a first connection portion, processing one end of the coil support tube to form a second connection portion, and the second connection portion is adapted to the first connection portion, specifically includes:

[0020] The preliminarily processed coil support base plate is installed on the processing platform, and a rough milling cutter is first selected. According to the general outline of the planned circular boss, the designated plate center of the coil support base plate is taken as the center of the circle, and the initial cutting radius and feed path are set. Excess material is gradually milled away from the outside to the inside to quickly remove the excess and preliminarily outline the prototype of the disc; then a fine milling cutter is replaced, the feed speed is reduced, and a circular motion is performed around the center of the circle to finely mill the edge of the disc until a circular boss with a second outer diameter is processed;

[0021] The coil support tube preliminarily processed into small sections is installed on a processing platform, and a suitable boring tool is selected to process the inner diameter of the solid tube so that it has a coil cylinder end with a second inner diameter.

[0022] As a preferred technical solution of the present invention, the third connecting part is a circular groove with a third inner diameter, and the fourth connecting part is an outer shell cylinder end with a third outer diameter, and the third inner diameter and the third outer diameter are interference fit or transition fit, so that the outer shell cylinder end of the outer shell bracket tube is tightly inserted into the circular groove of the outer shell bracket bottom plate.

[0023] Further, processing a plate surface of the bottom plate of the housing support to form a third connection part, processing one end of the housing support tube to form a fourth connection part, and the step of adapting the third connection part to the fourth connection part comprises:

[0024] The preliminarily processed housing bracket bottom plate is mounted on a processing platform, and a milling cutter with a suitable diameter on a CNC milling machine is used to mill a circular groove with a third inner diameter at the center of one of the plate surfaces of the housing bracket bottom plate by a step-by-step milling method, so as to serve as the third connecting portion;

[0025] The shell support tube preliminarily processed into small sections is installed on a processing platform, and the end of the shell support tube is processed to have a shell cylinder end with a third outer diameter, which serves as the fourth connecting portion.

[0026] As a preferred technical solution of the present invention, the third connecting part is a circular boss with a fourth outer diameter, and the fourth connecting part is an outer shell cylinder end with a fourth inner diameter, and the fourth outer diameter and the fourth inner diameter are interference fit or transition fit, so that the circular boss of the outer shell bracket base plate is tightly inserted into the outer shell cylinder end of the outer shell bracket tube.

[0027] Further, processing a plate surface of the bottom plate of the housing support to form a third connection part, processing one end of the housing support tube to form a fourth connection part, and the step of adapting the third connection part to the fourth connection part comprises:

[0028] The preliminarily processed shell bracket bottom plate is installed on the processing platform, and a rough milling cutter is first selected. According to the general outline of the planned circular boss, the center of the designated plate surface of the shell bracket bottom plate is taken as the center of the circle, and the initial cutting radius and feed path are set. Excess material is gradually milled away from the outside to the inside to quickly remove the excess and preliminarily outline the prototype of the disc; then a fine milling cutter is replaced, the feed speed is reduced, and a circular motion is performed around the center of the circle to finely mill the edge of the disc until a circular boss with a fourth outer diameter is processed;

[0029] The shell support tube preliminarily processed into small sections is installed on a processing platform, and a suitable boring tool is selected to process the inner diameter of the solid tube so that it has a shell cylinder end with a fourth inner diameter.

[0030] The present invention also provides a voice coil motor, comprising a coil support portion, a shell support portion and a magnet assembly, wherein the coil support portion and the shell support portion are manufactured using the high-efficiency and energy-saving voice coil motor manufacturing method described in the above scheme, and the coil support portion comprises a coil support tube and a coil support bottom plate that are fastened and assembled together, and the shell support portion comprises a shell support tube and a shell support bottom plate that are fastened and assembled together.

[0031] The present invention according to the above scheme has the following beneficial effects:

[0032] 1. The present invention disassembles the coil support part into a coil support tube and a coil support bottom plate for separate processing, and the outer shell support part is also disassembled into an outer shell support tube and an outer shell support bottom plate for separate processing. It only needs to select corresponding materials for processing according to the precise size of each part, which solves the problem of a large amount of excess material loss. Compared with the traditional integrated structure processing method, the raw material consumption of the present invention can be saved by about 80%.

[0033] 2. After the coil support part and the shell support part of the present invention are processed separately, the coil support tube, the coil support base plate and the shell support tube, the shell support base plate can be processed simultaneously on different machine tools, while the traditional one-piece processing method can only carry out the complex overall component processing procedures in sequence, especially the fine processing of the joints is extremely time-consuming; therefore, the parallel operation of the method of the present invention greatly shortens the processing flow, and the overall processing time can be shortened by up to 60% compared with the traditional method, which significantly improves the production efficiency.

[0034] 3. The coil support part and the shell support part of the present invention are processed separately, so that each processed component has a simple regular shape and an independent process. The complex shape and continuous process of traditional one-piece processing require extremely high worker skills and equipment accuracy, and defective products will be produced if there is a slight mistake. Therefore, the method of the present invention only requires ordinary workers to undergo simple training to get started, and the demand for equipment accuracy is also reduced. The defective rate is reduced from 8% to 12% to 3% to 5%, which effectively guarantees product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of a voice coil motor without an elastic part;

[0036] Figure 2 This is a structural exploded view of Embodiment 1 of the present invention;

[0037] Figure 3 This is a schematic diagram of a front view of the first embodiment of the present invention;

[0038] Figure 4 This is a structural decomposition diagram of Embodiment 2 of the present invention;

[0039] Figure 5 This is a schematic diagram of a front view of a second embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of a front view of a third embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of a front view of a fourth embodiment of the present invention;

[0042] Figure 8 The present invention is a flow chart of the method.

[0043] In the figure, 1, coil support part; 11, coil support tube; 111, coil frame; 12, coil support bottom plate;

[0044] 2. Shell support part; 21. Shell support tube; 22. Shell support bottom plate;

[0045] 3. Magnet assembly;

[0046] 100. Circular groove; 200. Circular boss. DETAILED DESCRIPTION

[0047] In order to better understand the purpose, technical scheme and technical effect of the present invention, the present invention is further explained in conjunction with the accompanying drawings and embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the present invention and are not used to limit the present invention.

[0048] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may also be a central element, and when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time.

[0049] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0050] The terms "first", "second", "third" and "fourth" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Several" means two or more, unless otherwise clearly and specifically defined.

[0051] Embodiment 1

[0052] like Figures 1 to 3 , Figure 8 As shown, a method for manufacturing a voice coil motor with high efficiency and energy saving is shown, wherein two types of plate materials are selected to cut the coil support bottom plate 12 and the shell support bottom plate 22 respectively, and two types of strip materials are selected to process the coil support tube 11 and the shell support tube 21 respectively; a plate surface of the coil support bottom plate 12 is processed to form a first connection part, and one end of the coil support tube 11 is processed to form a second connection part, and the second connection part is adapted to the first connection part, and the two can be fastened and assembled to form the coil support part 1 of the voice coil motor; a plate surface of the shell support bottom plate 22 is processed to form a third connection part, and one end of the shell support tube 21 is processed to form a fourth connection part, and the third connection part is adapted to the fourth connection part, and the two can be fastened and assembled to form the shell support part 2 of the voice coil motor. Among them, the plate material of the coil support bottom plate 12 is made of aluminum, and the plate material of the shell support bottom plate 22 is made of steel or iron; the strip material of the coil support tube 11 is made of aluminum, and the strip material of the shell support tube 21 is made of steel or iron.

[0053] The comparison between the amount of material consumed by this solution and the amount of material consumed by traditional one-piece processing is shown in the following table:

[0054]

[0055] Through the table, we can calculate:

[0056] 1. The total material consumption of the coil support part before processing in this scheme is 33.28g, and the consumables during processing are: 21.38g; the consumables during processing of the coil support part of the existing processing method are: 93.3-12.1=81.2g. The consumables of the coil support part can be saved by 73.7%.

[0057] 2. The total material consumption of the shell bracket part before processing of this scheme is 96.8g, and the consumables in the processing process are: 64.9g; the consumables in the shell bracket part processing process of the existing processing method are: 359-35.2=323.8g; the consumables of the shell bracket part can be saved by 79.9%.

[0058] The present invention disassembles the coil support part 1 into the coil support tube 11 and the coil support bottom plate 12 for separate processing, and the outer shell support part 2 is also disassembled into the outer shell support tube 21 and the outer shell support bottom plate 22 for separate processing. It only needs to select the corresponding materials according to the precise size of each part, which solves the problem of a large amount of excess material loss; further, after the coil support part 1 and the outer shell support part 2 are separately processed, the coil support tube 11, the coil support bottom plate 12 and the outer shell support tube 21, the outer shell support bottom plate 22 can be processed simultaneously on different machine tools, and parallel operation greatly shortens the processing flow; further, the coil support part 1 and the outer shell support part 2 are separately processed, so that each processed component has a simple regular shape and an independent process, and ordinary workers can get started after simple training, and the demand for equipment accuracy is also reduced, which effectively guarantees product quality.

[0059] In this embodiment, the step of selecting two types of sheet materials to cut the coil support bottom plate 12 and the shell support bottom plate 22 respectively specifically includes: obtaining a sheet material with a size specification larger than the target coil support bottom plate 12 size, setting the length, width and thickness of the coil support bottom plate 12 according to the design parameters of the voice coil motor (note whether the thickness needs to be reserved for the circular boss), and using a cutting device to cut a small plate that meets the size requirements from the corresponding sheet material along the cutting route, thereby serving as the coil support bottom plate 12. Obtaining a sheet material with a size specification larger than the target shell support bottom plate 22 size, setting the required length, width and thickness of the shell support bottom plate 22 according to the design parameters of the voice coil motor (note whether the thickness needs to be reserved for the circular boss), and using a cutting device to cut a small plate that meets the size requirements from the corresponding sheet material along the cutting route, thereby serving as the shell support bottom plate 22.

[0060] In this embodiment, the step of selecting two kinds of strip materials to respectively process the coil support tube 11 and the shell support tube 21 specifically includes: obtaining a strip material whose size specification is larger than the target coil support tube 11, the strip material is hollow or solid, and processing the shape of the strip material, specifically including processing the outer diameter of the strip material, and the coil skeleton of the strip material; according to the required length of the coil support tube, cutting the corresponding strip material that has been preliminarily processed into small sections that meet the size requirements, thereby serving as the coil support tube 11.

[0061] Obtain a strip material whose size is larger than the target shell support tube 21, the strip material is hollow or solid, and process the outer diameter of the strip material; according to the required length of the shell support tube, cut the corresponding strip material that has been preliminarily processed into small sections that meet the size requirements, and use this as the shell support tube 21.

[0062] The specific steps for processing the outer diameter of the strip material are as follows: the strip material is mounted on the lathe chuck, the lathe is driven, a matching turning tool is selected, and the strip material is gradually turned along the outer circumference until the outer diameter meets the size requirements.

[0063] The specific steps of processing the coil skeleton 111 on the outer surface of the strip material are as follows: remove the strip material with the outer diameter processed from the lathe chuck, fix it on the workbench of the CNC milling machine, ensure that the clamping is stable and the positioning is accurate, and input the relevant parameters of the coil skeleton 111 in the control system of the CNC milling machine according to the design requirements, including the number, spacing, width and depth of the C-shaped rings and other specific size information. Start the CNC milling machine, select a milling cutter with a suitable diameter, first move the milling cutter to the starting processing position of the cylinder of the coil support tube 11, for the first C-shaped ring, the milling cutter cuts into the cylinder along the preset path, and mills step by step in a way of surrounding the cylinder, accurately control the feed speed and rotation speed of the milling cutter, ensure that the milling depth is uniform, so as to process the groove on one side of the C-shaped ring; then, the milling cutter turns according to the predetermined route, mills the groove on the other side of the C-shaped ring, until the first C-shaped ring is completely formed, and the coil support tube 11 is divided into two sections. Repeat the above operation process, and process the remaining C-shaped rings on the cylindrical surface in sequence according to the set parameters until the coil skeleton 111 on the coil support tube 11 is completed.

[0064] In this embodiment, the first connection portion on the coil support bottom plate 12 is a circular groove 100 with a first inner diameter, and the second connection portion on the coil support tube 11 is a coil cylinder end with a first outer diameter, and the first inner diameter and the first outer diameter are interference fit or transition fit, so that the coil cylinder end of the coil support tube 11 is firmly inserted into the circular groove 100 of the coil support bottom plate 12. The third connection portion on the shell support bottom plate 22 is a circular groove 100 with a third inner diameter, and the fourth connection portion on the shell support tube 21 is a shell cylinder end with a third outer diameter, and the third inner diameter and the third outer diameter are interference fit or transition fit, so that the shell cylinder end of the shell support tube 21 is firmly inserted into the circular groove 100 of the shell support bottom plate 22.

[0065] The steps of processing one surface of the coil support bottom plate 12 to form the first connecting portion and processing one end of the coil support tube 11 to form the second connecting portion specifically include:

[0066] Step A1. Install the preliminarily processed coil support base plate 12 on the processing platform, and use a milling cutter with a suitable diameter on a CNC milling machine to process a circular groove 100 with a first inner diameter at the center position of one of the plate surfaces of the coil support base plate 12 by step-by-step milling, so as to serve as the first connecting portion; during the milling process, strictly control the feed rate and rotation speed of the milling cutter to ensure the inner wall flatness and dimensional accuracy of the circular groove 100.

[0067] Step B1. Install the coil support tube that has been preliminarily processed into small sections on a processing platform, select a suitable milling cutter to process the end of the coil support tube so that it has a coil cylinder end with a first outer diameter, which serves as the second connecting portion. During processing, closely monitor the outer diameter size, adjust the cutting parameters in real time, and ensure that the outer diameter size of the end is accurate and meets the requirements of interference fit or transition fit with the circular groove 100.

[0068] The steps of processing a surface of the housing support bottom plate 22 to form a third connection part, processing one end of the housing support tube 21 to form a fourth connection part, and matching the third connection part with the fourth connection part include:

[0069] Step C1. Install the preliminarily processed shell bracket base plate 22 on the processing platform, use a milling cutter of appropriate diameter on a CNC milling machine, and gradually mill a circular groove 100 with a third inner diameter at the center position of one of the plate surfaces of the shell bracket base plate 22 to serve as the third connecting part.

[0070] Step D1. Install the shell support tube 21 that has been preliminarily processed into small sections on a processing platform, select a suitable milling cutter to process the end of the shell support tube so that it has a shell column end with a third outer diameter, which serves as the fourth connecting portion.

[0071] Step E. Use a tightening assembly machine to tighten and assemble the coil support tube and the coil support bottom plate, and the shell support tube and the shell support bottom plate accordingly;

[0072] The jacking assembly machine is provided with a base for the track, and an abutment seat and a push seat sliding along the track are provided at the end of the base. The push seat is controlled by a driving member, which can be a hand-cranked screw, a cylinder, or a hydraulic cylinder. The driving member is used to push the push seat close to the abutment seat to tighten the support tube (coil support tube or shell support tube) and the bottom plate (coil support bottom plate or shell support bottom plate) between the push seat and the abutment seat. During the specific operation, place the processed bottom plate on one side of the abutment seat so that the corresponding connecting part (circular groove or circular boss) is facing outward, hold the processed support tube, and accurately align its corresponding connecting part (the column end adapted to the circular groove or the column end adapted to the circular boss) with the connecting part of the bottom plate, and gently place it on top of the bottom plate to prepare for the subsequent jacking assembly. Start the driving member of the pushing mechanism to push the pushing seat forward. When the pushing seat contacts the support tube, slow down the running speed of the driving member and continue to apply a stable and uniform tightening force to gradually tighten and assemble the two connecting parts of the support tube and the base plate.

[0073] Step F. Checking the verticality of the assembled base plate and the bracket tube;

[0074] Use a square ruler and a feeler gauge to check the verticality of the base plate and the bracket tube. The specific inspection steps include the following:

[0075] Step F1. Place one side of the square ruler close to the surface of the base plate and the other side slowly approach the bracket tube;

[0076] Step F2. Observe the gap between the square and the column, insert a feeler gauge of appropriate thickness into the gap, and read the gap value displayed by the feeler gauge;

[0077] Step F3. Repeat step F2 around the support tube, record the measured values ​​at different positions, and take the maximum value as the verticality deviation, denoted as Δ1=0.15 mm.

[0078] In order to verify that the base plate and bracket pipe assembly structure of this scheme has better verticality, two control examples are set up.

[0079] Comparative Example 1

[0080] The connection part of the bottom plate is a plurality of first screw holes, and the connection part of the bracket tube is a plurality of second screw holes. A plurality of bolts are passed through the first screw holes and the second screw holes at corresponding positions to achieve a fastening connection between the bottom plate and the bracket tube. Then, the verticality of the assembled bottom plate and the bracket tube is detected by the above step F, and the verticality deviation is obtained, which is recorded as Δ2=0.45mm.

[0081] Comparative Example 2

[0082] The surface of the bottom plate is a flat structure, with only the column installation position marked at the center, and the end of the bracket tube is fastened to the bottom plate by welding. Similarly, the verticality of the assembled bottom plate and bracket tube is tested using the above step F, and the verticality deviation is obtained, which is recorded as Δ3 = 0.6 mm.

[0083] Finally, by comparing the verticality deviations Δ1, Δ2 and Δ3 of this embodiment, reference example 1 and reference example 2, it can be seen that the verticality of the base plate and the bracket tube after assembly in this embodiment is optimal. After research, it was found that in reference example 2, due to the influence of factors such as screw hole processing accuracy and uneven bolt tightening force during assembly, slight misalignment between the bracket tube and the base plate is prone to occur. In reference example 3, the thermal stress release during the welding process is uneven, causing the base plate and the bracket tube to deform. Even with the center mark to assist in positioning, it is still difficult to accurately ensure the vertical relationship. Therefore, it is proved that the base plate and bracket tube assembly structure of this embodiment has better verticality.

[0084] The present invention provides a voice coil motor, comprising a coil support part 1, a shell support part 2 and a magnet assembly 3, wherein the coil support part 1 and the shell support part 2 are manufactured by the above-mentioned high-efficiency and energy-saving voice coil motor manufacturing method, and the coil support part 1 comprises a coil support tube 11 and a coil support bottom plate 12 which are fastened and assembled, and the shell support part 2 comprises a shell support tube 21 and a shell support bottom plate 22 which are fastened and assembled. The coil support tube 11 and the coil support bottom plate 12 are made of aluminum, and the shell support tube 21 and the shell support bottom plate 22 are made of steel or iron.

[0085] After the coil support part 1 and the shell support part 2 are assembled, the magnet assembly 3 is placed in the coil support tube 11, and the coil is wound on the coil skeleton 111. The coil skeleton 111 is one or more C-shaped rings arranged on the cylindrical surface of the coil support tube 11, and the C-shaped rings are obtained by machining the cylindrical surface of the coil support tube 11 with a CNC milling machine. One C-shaped ring divides the coil support tube into two sections. In an optional embodiment, there is one C-shaped ring, two C-shaped rings or three C-shaped rings on the cylindrical surface of the coil support tube 11, so that one coil support tube is correspondingly divided into a two-section structure, a three-section structure or a four-section structure, etc.

[0086] Then, the outer shell support tube is sleeved on the outside of the coil support tube with the coil wound thereon, and finally, the elastic part (not shown in the figure) is sleeved, with one end of the elastic part against the bottom plate of the coil support and the other end of the elastic part against the bottom plate of the outer shell support. Thus, the assembly of the voice coil motor is completed.

[0087] Embodiment 2

[0088] like Figure 4 and Figure 5 As shown, a method for manufacturing a voice coil motor with high efficiency and energy saving is shown. The method is the same as the first embodiment. The coil support part 1 and the shell support part 2 are processed separately. The difference is that: the first connection part on the coil support bottom plate 12 is a circular boss 200 with a second outer diameter, and the second connection part on the coil support tube 11 is a coil cylinder end with a second inner diameter. The second outer diameter and the second inner diameter are interference fit or transition fit, so that the circular boss 200 of the coil support bottom plate 12 is firmly inserted into the coil cylinder end of the coil support tube 11. The third connection part on the shell support bottom plate 22 is a circular boss 200 with a fourth outer diameter, and the fourth connection part on the shell support tube 21 is a shell cylinder end with a fourth inner diameter. The fourth outer diameter and the fourth inner diameter are interference fit or transition fit, so that the circular boss 200 of the shell support bottom plate 22 is firmly inserted into the shell cylinder end of the shell support tube 21.

[0089] The steps of processing one surface of the coil support bottom plate 12 to form the first connection portion and processing one end of the coil support tube 11 to form the second connection portion specifically include:

[0090] Step A2. Install the preliminarily processed coil support base plate 12 on the processing platform, first select a rough milling cutter, according to the general outline of the planned circular boss 200, with the designated plate center of the coil support base plate 12 as the center of the circle, set the initial cutting radius and feed path, and gradually mill off the excess material from the outside to the inside to quickly remove the excess and preliminarily outline the prototype of the disc; then replace it with a fine milling cutter, reduce the feed speed, make a circular motion around the center of the circle, and finely mill the edge of the disc until a circular boss 200 with a second outer diameter is processed; during the entire milling process, strictly control the tool speed and feed rate, and accurately control the cutting depth to ensure the flatness and roundness of the circular boss 200, so that the outer diameter size accuracy is controlled within a very small tolerance range.

[0091] Step B2. Install the coil support tube that has been initially processed into small sections on the processing platform, select a suitable boring tool, and process the inner diameter of the solid tube so that it has a coil cylinder end with a second inner diameter. During processing, always pay attention to the change in the inner diameter size, dynamically adjust the cutting parameters, and make the inner diameter of the coil cylinder end accurate and correct, so as to achieve an interference fit or transition fit with the second outer diameter of the circular boss 200.

[0092] The steps of processing one surface of the housing support bottom plate 22 to form the third connection part, processing one end of the housing support tube 21 to form the fourth connection part, and matching the third connection part with the fourth connection part include:

[0093] Step C2. Install the preliminarily processed shell bracket base plate 22 on the processing platform, first select a rough milling cutter, according to the general outline of the planned circular boss 200, with the designated plate center of the shell bracket base plate 22 as the center of the circle, set the initial cutting radius and feed path, and gradually mill off the excess material from the outside to the inside to quickly remove the excess and preliminarily outline the prototype of the disc; then replace it with a fine milling cutter, reduce the feed speed, make a circular motion around the center of the circle, and finely mill the edge of the disc until a circular boss 200 with a fourth outer diameter is processed.

[0094] Step D2. Install the shell support tube that has been initially processed into small sections on the processing platform, select a suitable boring tool, and process the inner diameter of the solid tube so that it has a shell cylinder end with a fourth inner diameter. During processing, always pay attention to the changes in the inner diameter size and dynamically adjust the cutting parameters to ensure that the inner diameter of the shell cylinder end is accurate and forms an interference fit or transition fit with the fourth outer diameter of the circular boss 200.

[0095] Finally, the same steps E and F as those in the first embodiment are performed to complete the assembly of the voice coil motor, and the specific process will not be repeated here.

[0096] Embodiment 3

[0097] like Figure 6As shown, a method for manufacturing a voice coil motor with high efficiency and energy saving is provided. The method is the same as that in the first embodiment, the coil support part 1 and the shell support part 2 are processed separately, and the difference lies in that: the first connection part on the coil support base plate 12 is a circular groove 100 with a first inner diameter, and the second connection part on the coil support tube 11 is a coil cylinder end with a first outer diameter; the third connection part on the shell support base plate 22 is a circular boss 200 with a fourth outer diameter, and the fourth connection part on the shell support tube 21 is a shell cylinder end with a fourth inner diameter.

[0098] Embodiment 4

[0099] like Figure 7 As shown, a method for manufacturing a voice coil motor with high efficiency and energy saving is provided. The method is the same as that in the first embodiment, the coil support part 1 and the shell support part 2 are processed separately, and the difference is that: the first connection part on the coil support base plate 12 is a circular boss 200 with a second outer diameter, and the second connection part on the coil support tube 11 is a coil cylinder end with a second inner diameter; the third connection part on the shell support base plate 22 is a circular groove 100 with a third inner diameter, and the fourth connection part on the shell support tube 21 is a shell cylinder end with a third outer diameter.

[0100] In summary, the present invention provides an efficient and energy-saving voice coil motor manufacturing method, breaking the traditional integrated structure processing mode, selecting two types of plate materials to respectively process the coil bracket bottom plate 12 and the shell bracket bottom plate 22, and using two types of strip materials to respectively process the coil bracket tube 11 and the shell bracket tube 21, and realizing adaptation and fastening assembly through processing the corresponding connecting parts of each component to form a coil bracket part 1 and a shell bracket part 2, thus solving the problem of a large amount of excess material loss and the waste of resources; parallel operations can be performed, which greatly shortens the processing flow and improves production efficiency; each processed component has a simple shape rule, and ordinary workers can get started after simple training, thereby improving the yield rate.

[0101] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for manufacturing a voice coil motor with high efficiency and energy saving, characterized in that: Two types of plate materials are used to cut the coil support bottom plate and the shell support bottom plate respectively, and two types of strip materials are used to process the coil support tube and the shell support tube respectively; Processing one surface of the coil support bottom plate to form a first connection part, processing one end of the coil support tube to form a second connection part, and the second connection part is adapted to the first connection part, and the two can be fastened and connected and assembled into a coil support part of the voice coil motor; A plate surface of the shell bracket bottom plate is processed to form a third connecting part, and one end of the shell bracket tube is processed to form a fourth connecting part, and the third connecting part is adapted to the fourth connecting part, and the two can be fastened and assembled into the shell bracket part of the voice coil motor.

2. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 1, characterized in that: The step of selecting two types of plate materials to cut the coil support bottom plate and the shell support bottom plate respectively comprises: Obtain a plate material with dimensions larger than the target plate size, set the required length, width and thickness of the coil bracket bottom plate and the shell bracket bottom plate according to the design parameters of the voice coil motor, and use the cutting equipment to cut small plates that meet the size requirements from the corresponding plate material along the cutting route to serve as the coil bracket bottom plate and the shell bracket bottom plate.

3. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 1, characterized in that: The step of selecting two strip materials to respectively process the coil support tube and the shell support tube specifically includes: Obtaining a strip material with a size larger than the target cylinder size, the strip material being hollow or solid, and processing the shape of the strip material, specifically including processing the outer diameter of the strip material, and processing the coil skeleton of the strip material used as the coil support tube; According to the required lengths of the coil support tube and the shell support tube, the corresponding strip materials processed initially are cut into small sections that meet the size requirements to serve as the coil support tube and the shell support tube.

4. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to any one of claims 1 to 3, characterized in that: The plate material of the coil support bottom plate is made of aluminum, and the plate material of the shell support bottom plate is made of steel or iron; the strip material of the coil support tube is made of aluminum, and the strip material of the shell support tube is made of steel or iron.

5. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 1, characterized in that: The first connecting portion is a circular groove with a first inner diameter, and the second connecting portion is a coil cylinder end with a first outer diameter. The first inner diameter and the first outer diameter are interference fit or transition fit, so that the coil cylinder end of the coil support tube is tightly inserted into the circular groove of the coil support bottom plate.

6. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 5, characterized in that: The step of processing a surface of the coil support bottom plate to form a first connection part, processing one end of the coil support tube to form a second connection part, and the second connection part is adapted to the first connection part, specifically includes: The preliminarily processed coil support base plate is mounted on a processing platform, and a milling cutter with a suitable diameter on a CNC milling machine is used to mill a circular groove with a first inner diameter at the center of one of the plate surfaces of the coil support base plate by a step-by-step milling method, so as to serve as the first connecting portion; The coil support tube preliminarily processed into small sections is installed on a processing platform, and the end of the coil support tube is processed so that it has a coil column end with a first outer diameter, which serves as the second connecting portion.

7. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 1, characterized in that: The first connecting portion is a circular boss with a second outer diameter, and the second connecting portion is a coil cylinder end with a second inner diameter. The second outer diameter and the second inner diameter are interference fit or transition fit, so that the circular boss of the coil support base plate is tightly inserted into the coil cylinder end of the coil support tube.

8. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 7, characterized in that: The step of processing a surface of the coil support bottom plate to form a first connection part, processing one end of the coil support tube to form a second connection part, and the second connection part is adapted to the first connection part, specifically includes: The preliminarily processed coil support base plate is installed on the processing platform, and a rough milling cutter is first selected. According to the general outline of the planned circular boss, the designated plate center of the coil support base plate is taken as the center of the circle, and the initial cutting radius and feed path are set. Excess material is gradually milled away from the outside to the inside to quickly remove the excess and preliminarily outline the prototype of the disc; then a fine milling cutter is replaced, the feed speed is reduced, and a circular motion is performed around the center of the circle to finely mill the edge of the disc until a circular boss with a second outer diameter is processed; The coil support tube preliminarily processed into small sections is installed on a processing platform, and a suitable boring tool is selected to process the inner diameter of the solid tube so that it has a coil cylinder end with a second inner diameter.

9. The method for manufacturing a high-efficiency and energy-saving voice coil motor according to claim 1, characterized in that: The third connection portion is a circular groove with a third inner diameter, and the fourth connection portion is a shell cylinder end with a third outer diameter, and the third inner diameter and the third outer diameter are interference fit or transition fit, so that the shell cylinder end of the shell bracket tube is tightly inserted into the circular groove of the shell bracket bottom plate; or, The third connecting portion is a circular boss with a fourth outer diameter, and the fourth connecting portion is an outer shell cylinder end with a fourth inner diameter. The fourth outer diameter and the fourth inner diameter are interference fit or transition fit, so that the circular boss of the outer shell bracket base plate is tightly inserted into the outer shell cylinder end of the outer shell bracket tube.

10. A voice coil motor, comprising a coil support portion, a housing support portion and a magnet assembly, characterized in that: The coil support part and the shell support part are manufactured by the high-efficiency and energy-saving voice coil motor manufacturing method as described in any one of claims 1 to 9, and the coil support part includes a coil support tube and a coil support base plate that are fastened and assembled together, and the shell support part includes a shell support tube and a shell support base plate that are fastened and assembled together.

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