Novel machining process method for water heater flange

Abstract

The invention discloses a novel water heater flange machining process method which comprises the following steps: S1, preparing materials according to the size, specification and thickness of materials required by accessories, putting the prepared materials into a mold, and performing cold heading forming by using a cold heading machine to machine the general shape of a flange; s2, a CNC numerical control machine tool is used for trimming the appearance face of the flange obtained through cold heading, and then trimming of the inner hole face of a round hole and chamfering in the hole are conducted; s3, a thread rolling machine is used for conducting thread rolling on the cylinder of the flange to machine threads; s4, electroplating or cleaning and deoiling the processed flange; and S5, CCD full inspection is conducted on the final product, and the qualified product is packaged and delivered. According to the method, during cold heading, a round hole in the flange is formed, then some simple machining is completed through a machine tool, machining of other non-key sizes is completed, and therefore the machining technology is simplified, the machining cost is reduced, the smoothness of the inner hole face of a product is improved through the technology, and a coating of the electric heating tube of the water heater is prevented from being scratched.

Description

Technical Field

[0001] The invention relates to the field of flange processing, and in particular to a new processing method for a water heater flange. Background Art

[0002] like Figure 1 and Figure 2 The metal flange shown is a fitting for a water heater. This flange has a hexagonal base, one side of which is provided with a concentrically arranged cylinder, and the end face of the cylinder is provided with two circular holes penetrating the flange. This flange is also widely used in other products such as washing machines, ovens, etc. When used on water heaters, the circular holes on the flange are used to install electric heating holes.

[0003] At present, the commonly used process for processing such metal flanges is to use CNC lathes to perform certain cutting processes on solid bars, and then use drill bits to drill holes. The flange products processed by this process method have poor quality controllability, low processing efficiency, and high processing costs. In particular, the inner hole surface of the processed flange is relatively rough, which will damage the electric heating tube and scratch the surface coating of the heating tube. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a new processing method for a water heater flange.

[0005] The technical solution of the present invention is as follows: A new processing method for a water heater flange, characterized in that it comprises the following steps:

[0006] S1. Prepare the material according to the size, specification and thickness of the material required for the accessory, put the prepared material into the mold, use a cold heading machine to perform cold heading forming, and process the general shape of the flange. The processed flange includes a hexagonal base, one side of the base is provided with a concentrically arranged cylinder, and the end face of the cylinder is provided with two circular holes penetrating the flange;

[0007] S2. Use CNC machine tools to trim the outer surface of the cold-forged flange, and then trim the inner surface of the circular hole and chamfer the hole;

[0008] S3, using a thread rolling machine to roll the cylinder of the flange to produce threads;

[0009] S4. Electroplate or clean and degrease the processed flange;

[0010] S5. Carry out CCD inspection on the final products and package the qualified products for shipment.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Compared with the conventional drilling production process, this method uses mold cold heading + CNC mechanical assistance to cleverly and accurately separate the flange products, improve production capacity and reduce costs; at the same time, this process improves the finish of the inner hole surface of the product, effectively avoiding scratches on the water heater electric heating tube coating due to the rough inner hole surface. This process eliminates the drilling link, saves 3 processes, makes the production process simpler, and can subsequently replace manual labor with a vibration plate or a robot, thereby achieving standardized and automated mass production.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0015] Figure 1 is a schematic diagram of a flange of the present invention;

[0016] Figure 2 is a schematic diagram of a flange of the present invention;

[0017] Figure 3 It is a schematic diagram of the process flow of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 invention.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection 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.

[0021] like Figure 3 A novel processing method for a water heater flange is shown, comprising the following steps:

[0022] S1. Prepare the materials according to the size, specification and thickness of the accessories, put the prepared materials into the mold, use the cold heading machine to cold head them, and process the general shape of the flange.

[0023] like Figure 1 and Figure 2 As shown, the flange processed by cold heading includes a hexagonal base, one side of the base is provided with a concentrically arranged cylinder, and the end surface of the cylinder is provided with two circular holes penetrating the flange.

[0024] S2. Use CNC machine tools to first trim the outer surface of the cold-forged flange, and then trim the inner surface of the circular hole and chamfer the hole to remove burrs generated during product processing and make the inner and outer surfaces of the product smooth.

[0025] During the circulation, transportation and processing of products, CNC machine tools can be used in conjunction with vibration plates or manipulators to achieve large-scale automated processing and improve processing efficiency.

[0026] S3. Use a thread rolling machine to roll the cylindrical flange into threads.

[0027] S4. Electroplate or clean and degrease the processed flange.

[0028] S5. Carry out CCD inspection on the final products and package the qualified products for shipment.

[0029] Compared with the conventional drilling production process, this method mainly forms the circular hole on the flange during cold heading, and then relies on machine tools to complete some simple processing and other non-key size processing, which can save 30% of production costs. This method uses mold cold heading + CNC mechanical assistance to cleverly and accurately separate flange products, improve production capacity and reduce costs; at the same time, this process improves the smoothness of the inner hole surface of the product, and effectively avoids scratching the coating of the water heater electric heating tube due to the rough inner hole surface. This process eliminates the drilling link, saves 3 processes, makes the production process simpler, and can subsequently replace manual labor with a vibration plate or a robot, thereby achieving standardized and automated mass production.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A new processing method for water heater flange, characterized in that: The following steps are involved: S1. Prepare the material according to the size, specification and thickness of the material required for the accessory, put the prepared material into the mold, use a cold heading machine to perform cold heading forming, and process the general shape of the flange. The processed flange includes a hexagonal base, one side of the base is provided with a concentrically arranged cylinder, and the end face of the cylinder is provided with two circular holes penetrating the flange; S2. Use CNC machine tools to trim the outer surface of the cold-forged flange, and then trim the inner surface of the circular hole and chamfer the hole; S3, using a thread rolling machine to roll the cylinder of the flange to produce threads; S4. Electroplate or clean and degrease the processed flange; S5. Carry out CCD inspection on the final products and package the qualified products for shipment.

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