Tri-eccentric metal sealing surface processing device and processing method

Abstract

The invention discloses a tri-eccentric metal sealing surface machining device and method. The tri-eccentric metal sealing surface machining device comprises an adjustable inclined die, a four-axis rotary table, an eccentric angle fixing inclined die, a fixing tool and a machining assembly. An obliquely arranged four-axis rotary table is arranged on the adjustable inclined mold; an eccentric angle fixing inclined die is arranged on the four-axis rotary table; an inclined fixing tool is arranged on the eccentric angle fixing inclined mold; a machining assembly is arranged above the fixing tool and used for conducting rough machining, finish machining, grinding and polishing operation on the sealing face of the sealing ring in the valve body. The invention further discloses a machining method of the triple-eccentric metal sealing surface machining device. A product is obliquely fixed in a machining center through the adjustable inclined mold and the eccentric angle fixed inclined mold, so that the product is matched with an inclined sealing surface in a sealing ring, meanwhile, rough machining, finish machining, grinding and polishing of the sealing surface can be completed at a time in the machining process, operation is convenient, machining precision is high, and good market competitiveness is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of valve processing and manufacturing, and in particular relates to a three-eccentric metal sealing surface processing device and a processing method. Background Art

[0002] The three-eccentric butterfly valve is a commonly used valve equipment. The sealing rings used on the three-eccentric butterfly valves currently produced in China are mainly pure metal sealing rings and metal plus graphite multi-layer sealing rings. Since the current processing of sealing rings is mainly done by CNC lathes and special equipment grinding, the existing sealing rings have the following disadvantages:

[0003] 1. It is difficult for CNC lathes to achieve the theoretical dimensions, and the roughness cannot be achieved. The roughness can only be improved by polishing and other means, resulting in the shape and contour of the sealing ring failing to meet the requirements of the drawing. This is because polishing the sealing surface has high requirements on workers, many uncertain factors, and low efficiency, which is not suitable for mass production, and it is difficult to achieve zero leakage.

[0004] 2. Some special equipment turning and grinding can meet the requirements of the drawings, but because the equipment is relatively expensive and the technology of such equipment is not mature, small and medium-sized valve companies are unable to purchase it. In addition, the versatility is poor and this equipment can only process one or two processes of a part, which cannot meet the needs of manufacturers. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a three-eccentric metal sealing surface processing device and a processing method, which are easy to operate, have high processing accuracy and low cost.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a three-eccentric metal sealing surface processing device, comprising: an adjustable oblique die, a four-axis turntable, an eccentric angle fixed oblique die, a fixed tooling and a processing assembly;

[0007] The adjustable inclined die is provided with an inclined four-axis turntable; the four-axis turntable is provided with an eccentric angle fixed inclined die; the eccentric angle fixed inclined die is provided with an inclined fixing tool for fixing the valve body; a processing assembly is provided above the fixing tool, and the processing assembly is used to perform rough processing, fine processing, grinding and polishing operations on the sealing surface of the sealing ring in the valve body.

[0008] Furthermore, the processing assembly includes a processing center spindle, and the processing center spindle is connected to detachable processing parts through a tool rod, and the processing parts are a milling cutter, a grinding wheel and a polishing wheel.

[0009] A processing method of a three-eccentric metal sealing surface processing device comprises the following steps:

[0010] S1. Fix the adjustable inclined die on the workbench of the machining center, with the angle parallel to the Y axis of the workbench;

[0011] S2. Fix the four-axis turntable above the adjustable inclined mold and lock it;

[0012] S3. Install the valve eccentric angle fixing die on the four-axis turntable and lock it;

[0013] S4. Install the fixed tooling on the fixed inclined mold and calibrate the position of the fixed tooling;

[0014] S5. Fix the valve body with the fixing tool and adjust the position with the flange;

[0015] S6. The machining center writes the CNC program for tool setting, then replaces the milling cutter to rough mill the sealing surface, and leaves a good grinding allowance;

[0016] S7. Replace the grinding wheel and grind the sealing surface to the size on the drawing;

[0017] S8. Replace the polishing wheel and polish the sealing surface to the roughness shown in the drawing.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] The triple-eccentric metal sealing surface processing device and processing method of the present invention, the adjustable inclined die and the eccentric angle fixed inclined die can fix the product at an angle in the processing center, so as to adapt to the inclined sealing surface of the sealing ring in the product, and at the same time, the rough processing, fine processing, grinding and polishing of the sealing surface can be completed at one time during the processing, the operation is convenient and the processing accuracy is high, so that the triple-eccentric metal valve has good competitiveness in the global market and meets the market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of a three-eccentric metal sealing surface processing device in one embodiment of the present invention;

[0022] Figure 2 This is a flow chart of a processing method of a triple eccentric metal sealing surface processing device in one embodiment of the present invention;

[0023] Among them: 1. Adjustable inclined die; 2. Four-axis turntable; 3. Eccentric angle fixed inclined die; 4. Fixed tooling; 5. Processing components; 50. Machining center spindle; 51. Tool rod; 52. Processing parts; 53. Sealing surface. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] The invention provides a triple eccentric metal sealing surface processing device and a processing method to solve the problems of low processing precision and inconvenient operation of the triple eccentric metal sealing surface in the prior art.

[0026] For ease of understanding, the specific process in the embodiments of the present application is described below. Figure 1 A three-eccentric metal sealing surface processing device in the embodiment of the present application comprises: an adjustable bevel die 1, a four-axis turntable 2, an eccentric angle fixed bevel die 3, a fixed tooling 4 and a processing assembly 5; the adjustable bevel die 1 is provided with an inclined four-axis turntable 2, and the inclination angle of the adjustable bevel die 1 is adjustable, so that the inclination angle of the surrounding turntables 2 can be adjusted; an eccentric angle fixed bevel die 3 is placed on the four-axis turntable 2, and the above-mentioned bevel die has a fixed inclination angle; the eccentric angle fixed bevel die 3 is provided with an inclined fixed tooling 4 for fixing the valve body, and the fixed tooling 4 is used to fix the valve body; a processing assembly 5 is provided above the fixed tooling 4, and the processing assembly 5 is used to perform rough processing, fine processing, grinding and polishing operations on the sealing surface of the sealing ring in the valve body.

[0027] Furthermore, the processing assembly 5 includes a processing center spindle 50, which is connected to a detachable processing component 52 via a tool rod 51. The processing component 52 is one of a milling cutter, a grinding wheel and a polishing wheel, and can be replaced at any time to meet different processing requirements.

[0028] The present invention places the product to be processed on the eccentric angle fixed bevel die 3 through an adjustable bevel die 1, a four-axis turntable 2, an eccentric angle fixed bevel die 3 and a fixed tooling 4. The adjustable bevel die 1 and the eccentric angle fixed bevel die 3 in the present invention are inclined so as to adapt to the corresponding processing of the inclined sealing surface in the product. At the same time, the processing component 52 can be one of a milling cutter, a grinding wheel and a polishing wheel, so that it can be replaced at any time, and during the processing, the rough processing, fine processing, grinding and polishing of the sealing surface can be completed at one time, the operation is convenient and the processing accuracy is high.

[0029] See also Figure 2 The present invention also discloses a processing method of a three-eccentric metal sealing surface processing device, comprising the following steps:

[0030] S1. Fix the adjustable inclined die on the workbench of the machining center, with the angle parallel to the Y axis of the workbench;

[0031] S2. Fix the four-axis turntable above the adjustable inclined mold and lock it;

[0032] S3. Install the valve eccentric angle fixing die on the four-axis turntable and lock it;

[0033] S4. Install the fixed tooling on the fixed inclined mold and calibrate the position of the fixed tooling;

[0034] S5. Fix the valve body with the fixing tool and adjust the position with the flange;

[0035] S6. The machining center writes the CNC program for tool setting, then replaces the milling cutter to rough mill the sealing surface, and leaves a good grinding allowance;

[0036] S7. Replace the grinding wheel and grind the sealing surface to the size on the drawing;

[0037] S8. Replace the polishing wheel and polish the sealing surface to the roughness shown in the drawing.

[0038] Through the above processing method, the three-eccentric metal valve can be placed in the machining center for processing, making the entire processing more convenient, lower cost, and better processing accuracy. Such a three-eccentric metal valve has good competitiveness in the global market and meets the needs of enterprises.

[0039] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-eccentric metal sealing surface processing device, characterized in that: include: Adjustable inclined die, four-axis rotary table, eccentric angle fixed inclined die, fixed tooling and processing components; The adjustable inclined die is provided with an inclined four-axis turntable; the four-axis turntable is provided with an eccentric angle fixed inclined die; the eccentric angle fixed inclined die is provided with an inclined fixing tool for fixing the valve body; a processing assembly is provided above the fixing tool, and the processing assembly is used to perform rough processing, fine processing, grinding and polishing operations on the sealing surface of the sealing ring in the valve body.

2. The triple eccentric metal sealing surface processing device according to claim 1, characterized in that: The processing assembly comprises a processing center spindle, and the processing center spindle is connected with detachable processing parts through a tool rod, and the processing parts are a milling cutter, a grinding wheel and a polishing wheel.

3. A processing method for a three-eccentric metal sealing surface processing device, characterized in that: The steps include: S1. Fix the adjustable inclined die on the workbench of the machining center, with the angle parallel to the Y axis of the workbench; S2. Fix the four-axis turntable above the adjustable inclined mold and lock it; S3. Install the valve eccentric angle fixing die on the four-axis turntable and lock it; S4. Install the fixed tooling on the fixed inclined mold and calibrate the position of the fixed tooling; S5. Fix the valve body with the fixing tool and adjust the position with the flange; S6. The machining center writes the CNC program for tool setting, then replaces the milling cutter to rough mill the sealing surface, and leaves a good grinding allowance; S7. Replace the grinding wheel and grind the sealing surface to the size on the drawing; S8. Replace the polishing wheel and polish the sealing surface to the roughness shown in the drawing.

Images