Combined machining device for large valves
By designing a large valve combination processing device, using parallel processing shafts and automatic feed assembly, the problem of multiple positioning errors of the large valve body blanks is solved, and efficient and accurate processing effects are achieved.
Patent Information
- Application Number
- CN202422162998.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In the prior art, when processing large valve body blanks, multiple positioning and clamping of parts leads to an increase in repeated positioning errors, affecting production efficiency.
A combined processing device for large valves is designed, using three parallel processing shafts, combining a cross sliding table, a left flat disc and a right flat disc automatic feed assembly, and a displacement module to realize parallel and combined processing of three sides of the valve body.
It significantly improves processing efficiency and accuracy, reduces the number of equipment, and reduces the equipment footprint and cost.
Smart Images
Figure CN223129429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of valve manufacturing, and particularly relates to a combined machining device for large valves. Background Technique
[0002] Gate valves have the advantages of simple structure, good sealing performance, and small pressure loss, and are widely used in fields such as chemical industry, petroleum, natural gas, electric power, pharmaceutical, and food processing. The gate valve controls the opening and closing of the medium flow path by lifting the gate plate in the valve body. When the gate valve is fully open, the valve plate of the gate valve completely disengages from the valve seat, and the fluid pressure basically does not drop; when the gate valve is closed, the gate plate completely descends to the valve seat, and the fluid flow is blocked. Since the valve body of the gate valve needs to accommodate the lifting of the gate plate, the inner cavity height and outer contour dimensions of the valve body are often much larger than those of other types of valves.
[0003] The valve body of the gate valve is mostly a three-way tubular hollow shell, and the ends of the three-way pipe have circular flanges. Bolt holes are evenly distributed on the flanges on both sides of the valve body; the upper flange of the valve body is used to connect the valve cover. For the valve bodies of large gate valves, globe valves, and check valves, the valve body blanks of the gate valves are usually made by casting or casting and welding processes; however, due to the large machining allowance of the casting blanks, the machining of the valve body blanks requires a large amount of manufacturing time and labor costs; moreover, in the traditional machining method, the valve body needs to be positioned and clamped multiple times, resulting in an increase in the repeated positioning error and a drag on the production efficiency. Therefore, there is an urgent need to design a combined machining device for large valves.
[0004] It should be noted that the above information disclosed in this background technique section is only used to understand the background technique of the inventive concept of the utility model, and therefore, it may include information that does not constitute the prior art. Summary of the Utility Model
[0005] In the process of machining large valve body blanks in the prior art, the repeated positioning and clamping of parts result in an increase in the repeated positioning error and a drag on the production efficiency. In view of the above problems, the utility model proposes a combined machining device for large valves. The device has three machining axes for parallel machining, and can perform parallel and combined machining on the end faces, central holes, and flange hole features on three sides of the valve body, so as to significantly improve the machining efficiency, improve the machining accuracy, and reduce the number of equipment. At the same time, the device adopts a lightweight design to reduce the floor area and cost of the equipment.
[0006] The specific scheme of the device of the utility model is: it includes a bed body, a main machining axis assembly, a cross slide, a left rotating disk automatic feed assembly, a right rotating disk automatic feed assembly, and a position-changing module;
[0007] The bed body includes a base and columns; the projection of the base on the ground is T-shaped, with wide and narrow parts; the base is integrally a hollow box structure; the columns are integrally in a gantry structure and are fixedly installed on the narrow part of the base; the outer side surface of the support column is provided with reinforcing ribs, which on the one hand improve the lateral strength of the column and on the other hand increase the bottom area of the support column.
[0008] The main processing shaft assembly includes a vertical slide, a main shaft motor, a tool holder and a gearbox;
[0009] The vertical slide is fixedly installed on the side surface of the column. On the outer surface of the slide plate of the vertical slide, a main shaft motor and a tool holder are fixedly installed; on the inner surface of the slide plate of the vertical slide, a motor and a gearbox are fixedly installed. The main shaft motor is located between the support columns on both sides of the column, the output shaft of the main shaft motor is fixedly connected to the input shaft of the main shaft box, and the output shaft of the main shaft box is fixedly connected to the tool holder.
[0010] The cross slide is fixedly installed on the wide part of the base; the cross slide is a double-layer structure, the lower layer is a left-right direction slide rail, the upper layer is a front-back direction slide rail, and the front-back direction slide rail is fixedly installed on the slide plate of the left-right direction slide rail; the length of the slide plate of the front-back direction slide rail on the upper layer is greater than that of the slide plate of the left-right direction slide rail on the lower layer; circular weight-reducing holes and square weight-reducing grooves are distributed on the side wall of the front-back direction slide rail.
[0011] The indexing module is fixedly installed on the slide plate of the front-back direction slide rail and has a 360° rotation function.
[0012] The left faceplate automatic feed assembly and the right faceplate automatic feed assembly are fixedly installed on two dovetail slides; the two dovetail slides are fixedly installed on both sides of the upper slide plate of the cross slide.
[0013] Compared with the prior art, the present utility model has remarkable advantages and beneficial effects, which are specifically reflected in the following aspects:
[0014] 1) Specifically designed for the processing of large valve bodies, the structural strength, stability, lightweight performance and space utilization rate of the machine tool are better than those of general machine tools;
[0015] 2) One device can simultaneously perform multiple processes, reducing the number of loading and unloading of the valve body blank, reducing the repeated positioning error of parts, and effectively improving the machining accuracy of workpieces;
[0016] 3) The part indexing and tool change can be automatically completed.
[0017] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to further describe the present utility model in detail. Description of the Drawings
[0018] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0019] Figure 1 This is a schematic diagram of the valve body structure processed by the utility model device;
[0020] Figure 2 This is a left-side structural schematic diagram of the device of the utility model;
[0021] Figure 3 This is a schematic diagram of the axonometric structure of the device of the utility model;
[0022] In the figure: 1. valve body; 2. flange hole; 3. right flange; 4. left flange; 5. upper flange; 7. upper center hole; 8. right center hole; 10. column; 11. base; 12. support column; 14. reinforcing rib; 20. cross slide; 21. dovetail slide; 25. displacement module; 26. tool holder; 30. left machining axis motor; 301. right machining axis motor; 31. left rotary disk automatic feed assembly; 32. right rotary disk automatic feed assembly; 40. vertical slide. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] As Figure 1 shown, the machining object of this embodiment is the valve body of a large valve. Such a valve body is a three-way tubular hollow shell, and the ends of the three-way pipes have circular flanges, on which bolt holes are evenly distributed. Specifically, the valve body 1 has a right flange 3, a left flange 4, and an upper flange 5, as well as upper central hole 7, right central hole 8, and left central hole features. The device of this embodiment has three machining spindles, which can perform parallel and combined machining on the holes, surfaces, and thread features on three sides of the valve body, so as to significantly improve the machining efficiency, improve the machining accuracy, and reduce the number of equipment; at the same time, the device adopts a lightweight design in many places to reduce the floor area and cost of the equipment.
[0027] As Figure 2 and Figure 3 shown, the device of this embodiment includes a bed body, a main machining spindle assembly, a cross slide, a left faceplate automatic feed assembly 31, a right faceplate automatic feed assembly 32, and a positioning module 25.
[0028] The bed body includes a base 11 and a column 10, and the column 10 is fixedly installed on the base 11.
[0029] Preferably, the base 11 is integrally of a hollow box-like structure, and its projection on the ground is T-shaped, having features of a wide part and a narrow part.
[0030] Preferably, the column 10 is integrally of a gantry structure, and the cross beam of the column 10 is supported by support columns 12 on both sides thereof; the column is fixedly installed on the narrow part of the base.
[0031] The main machining spindle assembly includes a vertical slide 40, a spindle motor, a tool holder 26, and a gearbox;
[0032] The vertical slide 40 is fixedly installed on the side of the column 10. On the outer surface of the slide plate of the vertical slide 40, a spindle motor and a tool holder 26 are fixedly installed; on the inner surface of the slide plate of the vertical slide 40, a motor and a gearbox are fixedly installed; the spindle motor is located between the support columns 12 on both sides of the column 10, the output shaft of the spindle motor is fixedly connected to the input shaft of the gearbox, and the output shaft of the gearbox is mechanically connected to the power input end of the tool holder 26.
[0033] Preferably, the output shaft of the gearbox is connected to the power input end of the tool holder 26 through a belt drive.
[0034] The cross slide 20 is fixedly installed on the wide part of the base 11;
[0035] The cross slide 20 is of a double-layer structure. The lower layer is a left-right direction slide rail, and the upper layer is a front-back direction slide rail. The front-back direction slide rail is fixedly installed on the slide plate of the left-right direction slide rail; the length of the slide plate of the front-back direction slide rail on the upper layer is greater than that of the slide plate of the left-right direction slide rail on the lower layer.
[0036] Preferably, the stroke of the left-right direction slide rail and the front-back direction slide rail is 500 - 700 mm; the length of the slide plate of the left-right direction slide rail is 400 - 600 mm, and the length of the slide plate of the front-back direction slide rail is 1200 - 1800 mm.
[0037] Preferably, circular weight-reducing holes and square weight-reducing grooves are distributed on the side walls of the front-back direction slide rail.
[0038] The indexing module 25 is fixedly installed on the slide plate of the front-back direction slide rail and is located at the central position of the slide plate; the indexing module 25 has a 360° rotation function.
[0039] The left faceplate automatic feed assembly 31 and the right faceplate automatic feed assembly 32 are both fixedly installed on two dovetail slides 21; the two dovetail slides 21 are fixedly installed on both sides of the upper slide plate of the cross slide 20.
[0040] The main machining motions of the left faceplate automatic feed assembly 31 and the right faceplate automatic feed assembly 32 are respectively driven by a left machining shaft motor 30 and a right machining shaft motor 301.
[0041] The device of the present utility model is used for machining the Figure 1 valve body 1 shown, and the specific machining process is as follows:
[0042] S1: Loading, the upper flange 5 of the valve body faces the main machining shaft assembly; the indexing module 25 rotates to the first position, and the tool holder 26 replaces the face milling cutter; the left faceplate automatic feed assembly 31 and the right faceplate automatic feed assembly 32 replace the boring cutters;
[0043] S2: The left faceplate automatic feed assembly 31 and the right faceplate automatic feed assembly 32 respectively bore and mill the end faces of the left flange 4 and the right flange 3, and the main machining shaft assembly mills the end face of the upper flange 5;
[0044] S3: The left faceplate automatic feed assembly 31 and the right faceplate automatic feed assembly 32 replace the finish boring cutters; the tool holder 26 replaces the drilling tool;
[0045] S4: The left horizontal turret automatic feed assembly 31 and the right horizontal turret automatic feed assembly 32 machine the left and right center holes 8, and the main machining shaft machines the flange holes 2 on the upper flange 5.
[0046] S5: The indexing rotary table rotates to the second position, and the main machining shaft machines the flange holes on the left flange 4.
[0047] S6: The indexing rotary table rotates to the third position, and the main machining shaft machines the flange holes on the right flange 3.
[0048] This embodiment provides a combined machining device for large valves. The machine tool has an indexing module that can machine the hole and surface features on the valve body parts in parallel, so as to simplify the machining process and reduce the equipment.
[0049] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and equipment should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0050] For the sake of description, spatial relative terms such as "above", "over", "on the upper surface", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation shown in the figure for the device. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.
[0051] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0052] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A combined machining device for large valves, characterized in that Comprising: a bed body, a main processing shaft assembly, a cross slide, a left faceplate automatic feed assembly (31), a right faceplate automatic feed assembly (32) and a position-changing module (25); The bed body includes a base (11) and a column (10), and the column (10) is fixedly installed on the base (11); The base (11) is a hollow box-shaped structure, and its projection on the ground is T-shaped; the column (10) is a gantry structure, and the cross beam of the column (10) is supported by the support columns (12) on both sides thereof; the column (10) is fixedly installed on the narrow part of the base (11); reinforcing ribs (14) are arranged on the outer side surface of the support column (12); The main processing shaft assembly includes a vertical slide (40), a main shaft motor, a tool holder (26) and a gearbox; The vertical slide (40) is fixedly installed on the side surface of the column (10). On the outer surface of the slide plate of the vertical slide (40), a main shaft motor and a tool holder (26) are fixedly installed; on the inner surface of the slide plate of the vertical slide (40), a motor and a gearbox are fixedly installed; The main shaft motor is located between the support columns (12) on both sides of the column (10), the output shaft of the main shaft motor is fixedly connected to the input shaft of the gearbox, and the output shaft of the gearbox is mechanically connected to the power input end of the tool holder (26); The cross slide (20) is fixedly installed on the wide part of the base (11); the cross slide (20) is a double-layer structure, the lower layer is a left-right direction slide rail, and the upper layer is a front-back direction slide rail; circular weight-reducing holes and square weight-reducing grooves are distributed on the side wall of the front-back direction slide rail.
2. The combined processing device for large valves according to claim 1, wherein: The left faceplate automatic feed assembly (31) and the right faceplate automatic feed assembly (32) are fixedly installed on two dovetail slides (21); the two dovetail slides (21) are fixedly installed on both sides of the upper slide plate of the cross slide.
3. The combined processing device for large valves according to claim 1, wherein: The output shaft of the gearbox is connected to the power input end of the tool holder (26) through belt drive; The position-changing module (25) is fixedly installed on the slide plate of the front-back direction slide rail.