Auxiliary device for machining valve plate of safety valve

Abstract

The utility model relates to the technical field of machining, in particular to an auxiliary device for machining a valve plate of a safety valve, which comprises an auxiliary shaft as a main body of the auxiliary device, a clamping mechanism and a process boss for placing the valve plate of the safety valve, the process boss is arranged in the middle of the auxiliary shaft, the clamping mechanism comprises clamping pressing plates, a connecting screw rod and a compression nut, the clamping pressing plates are symmetrically arranged on the two sides of the process boss, the clamping pressing plates are connected to the auxiliary shaft through the connecting screw rod and the compression nut, and during work, one end of each clamping pressing plate makes close contact with the auxiliary shaft, and the other end of each clamping pressing plate makes close contact with the auxiliary shaft. And the other end of the clamping pressing plate is in close contact with the safety valve plate. By means of the auxiliary device, conversion from traditional horizontal machining center machining to vertical machining center machining is achieved, horizontal machining capacity is greatly released, meanwhile, a technological boss is reduced through optimization of the machining technology, the blank size is reduced, and the manufacturing cost of products of the type is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a kind of auxiliary device for processing safety valve valve plate, for improving the operation rhythm efficiency of mechanical processing, reduce the manufacturing cost of product. BACKGROUND

[0002] With the development of industry and the updating of product, the quality requirement of product is higher and higher, and with the improvement of processing quality, the processing cost is increased, and for enterprise, it is imperative to reduce cost and increase benefit.

[0003] In the field of industrial production, as the key component of guaranteeing the safe operation of equipment, the stability and reliability of the performance of safety valve are crucial. As one of the core components of safety valve, the processing quality of safety valve plate directly affects the overall performance of safety valve. At present, in the processing and manufacturing process of safety valve plate, there are many problems in the traditional processing mode and process, which seriously restricts the improvement of production efficiency and product quality, and also increases the manufacturing cost.

[0004] At present, most enterprises mainly adopt traditional horizontal machining center to process safety valve plate. Horizontal machining center has certain advantages when processing some parts with special shape and structure, but for safety valve plate and other parts with special geometric characteristics and processing requirements, there are obvious limitations. Due to the structural characteristics of safety valve plate, when processing on horizontal machining center, it often needs to clamp and adjust the position of workpiece for many times, which not only increases the auxiliary time of processing and reduces the production efficiency, but also introduces positioning error by clamping for many times, which affects the processing precision.

[0005] The instability of processing precision directly leads to the uneven product quality of safety valve plate, and in actual use process, it may appear problems such as sealing not tight and action not sensitive, which seriously affects the performance and reliability of safety valve, and brings safety hazard to industrial production. CONTENT OF UTILITY MODEL

[0006] In view of the deficiency of prior art, the purpose of the utility model is to provide a kind of auxiliary device for processing safety valve plate with simple structure and convenient to use.

[0007] In order to realize the above, the technical scheme of the utility model is: a kind of auxiliary device for processing safety valve valve plate, including auxiliary shaft is the main body of auxiliary device for bearing the part to be processed and is connected with processing equipment, further including clamping mechanism and the process boss for placing safety valve valve plate, process boss is set in the middle part of auxiliary shaft, clamping mechanism includes clamping pressboard, connecting screw and compression nut, clamping pressboard is symmetrically set in the two sides of process boss, clamping pressboard is connected on auxiliary shaft by connecting screw and compression nut, when working, one end of clamping pressboard is in close contact with auxiliary shaft, the other end of clamping pressboard is in close contact with safety valve valve plate.

[0008] Further, one end of the auxiliary shaft is provided with a clamping reference boss, and the other end of the auxiliary shaft is provided with a tapered hole; the clamping reference boss is clamped on the chuck of the machining tool, and the tailstock is tightly pressed against the tapered hole.

[0009] Further, the auxiliary shaft is provided with a fixing hole for mounting the connecting screw and a flattened surface I for contacting the clamping pressboard, the fixing hole is a threaded hole, a flattened surface II is provided at the fixing hole, and the fixing hole is located within the range of the flattened surface II.

[0010] Further, the diameter of the shaft section where the flattened surface I is located is greater than the diameter of the shaft section of the clamping reference boss, and at the end of the clamping pressboard in contact with the flattened surface I, the width of the flattened surface I is greater than the width of the clamping pressboard.

[0011] Further, the clamping pressboard is horizontally placed and has an inverted L-shaped structure, a through hole is provided on the long side of the clamping pressboard, the connecting screw is inserted into the fixing hole through the through hole and is fastened by the compression nut, the short side of the clamping pressboard is in contact with the flattened surface I on the auxiliary shaft, and the end of the long side of the clamping pressboard is provided with a boss which is in contact with the upper surface of the safety valve valve plate.

[0012] Further, the surface of the process boss is higher than the surface of the auxiliary shaft, the process boss is provided with a stepped hole, the stepped hole has a structure with large ends and a small middle part, and the stepped hole is provided with a positioning pin hole and a screw mounting hole on the step.

[0013] Further, the process boss has a square structure, the safety valve valve plate is placed on the process boss, the bottom surface of the safety valve valve plate is in contact with the surface of the process boss, and the non-processing area of the surface to be processed of the safety valve valve plate is in contact with the clamping pressboard.

[0014] Further, the safety valve valve plate is provided with A, B, C and D inclined surfaces to be processed, the A, B, C and D inclined surfaces are arranged around the safety valve valve plate, the A inclined surface is arranged opposite to the B inclined surface, and the C inclined surface is arranged opposite to the D inclined surface.

[0015] The advantages of the technical scheme of the utility model are:

[0016] 1. The utility model discloses a conversion from traditional horizontal machining center machining to vertical machining center machining is realized through the use of auxiliary device, and the horizontal machining capacity is greatly released, and one process boss is reduced through the optimization of machining process, and the blank size is reduced, and the manufacturing cost of this kind of product is greatly reduced.

[0017] 2. The utility model discloses a processing method realizes the conversion from traditional horizontal machining center machining to vertical machining center machining, and the horizontal machining capacity is greatly released, and the processing working hours are saved about 40%. The unique design and reasonable clamping mode of auxiliary device ensure the stability of safety valve plate in the machining process, effectively avoid the displacement produced because of the cutting force effect, and guarantee the machining precision. One process boss is reduced through the optimization of machining process, and the blank size is reduced, and the raw material cost is saved about 30%. The auxiliary device and processing method of the utility model can be popularized to the processing of other model products of the same series, and have good universality and economy. ACCURACY

[0018] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0019] Figure 1 It is the overall structure schematic diagram of the auxiliary device of the utility model;

[0020] Figure 2 It is the bottom surface structure schematic diagram of the auxiliary device of the utility model;

[0021] Figure 3 It is the auxiliary device sectional view schematic diagram of the utility model;

[0022] Figure 4 It is the auxiliary device partial schematic diagram of the utility model;

[0023] Figure 5 It is the safety valve plate processing step 1 schematic diagram of the utility model;

[0024] Figure 6 It is the safety valve plate processing step 1 schematic diagram of the utility model.

[0025] The marks in the above-mentioned drawing are respectively: 1, auxiliary shaft; 11, clamping reference boss; 12, taper hole; 13, fixing hole; 14, planing surface I; 15, planing surface II; 2, clamping plate; 21, through hole; 22, boss; 3, connecting screw; 4, compression nut; 5, positioning pin hole; 6, screw mounting hole; 7, safety valve plate; 71, A slope; 72, B slope; 73, C slope; 74, D slope; 8, process boss; 81, stepped hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further explained in detail.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which may change accordingly when the absolute position of the described object changes.

[0028] As shown in Figures 1-6 A kind of auxiliary device for processing safety valve plate, including auxiliary shaft 1 as the main body of auxiliary device for bearing the part to be processed and being connected with processing equipment, still including clamping mechanism and process boss 8 for placing safety valve plate 7, process boss 8 is set in the middle part of auxiliary shaft 1, clamping mechanism includes clamping plate 2, connecting screw 3 and compression nut 4, clamping plate 2 is symmetrically set in the two sides of process boss 8, clamping plate 2 is connected on auxiliary shaft 1 by connecting screw 3 and compression nut 4, when working, one end of clamping plate 2 is in close contact with auxiliary shaft 1, the other end of clamping plate 2 is in close contact with safety valve plate 7.

[0029] One end of auxiliary shaft 1 is equipped with clamping reference boss 11, and the other end of auxiliary shaft 1 is equipped with taper hole 12;Clamping reference boss 11 is clamped on chuck of processing machine tool, and taper hole 12 is tightly contacted by top.

[0030] Specifically, the auxiliary shaft is the main body of the auxiliary device, used for carrying the safety valve plate to be machined and connecting with the machining equipment. The auxiliary shaft is provided with a clamping reference boss at one end, which has accurate size and shape and can be precisely matched with the chuck of the machining machine tool to provide a stable clamping reference for the entire auxiliary device. The other end is provided with a tapered hole. In the machining process, the top of the taper hole is tightly pressed, further enhancing the fixing stability of the auxiliary device on the machining equipment, preventing vibration or deviation during high-speed machining or strong cutting, and thus ensuring the machining quality.

[0031] The surface of the process boss 8 is higher than the surface of the auxiliary shaft 1. The process boss 8 is provided with a stepped hole 81. The stepped hole 81 has a structure of large at both ends and small in the middle. The stepped hole 81 is provided with a positioning pin hole 5 and a screw mounting hole 6 on the step.

[0032] The process boss 8 is a square structure. The safety valve plate 7 is placed on the process boss 8. The bottom surface of the safety valve plate 7 is in contact with the surface of the process boss 8. The non-machining area of the machining surface of the safety valve plate 7 is in contact with the clamping pressure plate 2.

[0033] The safety valve plate 7 is provided with A bevel 71, B bevel 72, C bevel 73 and D bevel 74 to be machined. The A bevel 71, B bevel 72, C bevel 73 and D bevel 74 are arranged around the safety valve plate 7. The A bevel 71 is arranged opposite to the B bevel 72. The C bevel 73 is arranged opposite to the D bevel 74.

[0034] Specifically, the process boss is fixedly arranged at the middle position of the auxiliary shaft to provide a stable placement platform for the safety valve plate. The surface of the process boss is higher than the surface of the auxiliary shaft, facilitating the installation and positioning of the safety valve plate. The process boss is provided with a stepped hole having a structure of large at both ends and small in the middle, which not only reduces the weight of the process boss and the overall quality of the auxiliary device, but also facilitates the operation and installation. The positioning pin hole and the screw mounting hole can be arranged on the step of the stepped hole for the accurate positioning and fixing of the safety valve plate, ensuring the position accuracy of the safety valve plate during the machining process. The process boss is a square structure. The regular shape facilitates the machining and manufacturing, and also provides a stable support surface for the placement of the safety valve plate.

[0035] The auxiliary shaft 1 is provided with a fixed hole 13 for mounting the connecting screw rod 3 and a cut flat surface I 14 for contacting the clamping pressure plate 2. The fixed hole 13 is a threaded hole. The fixed hole 13 is provided with a cut flat surface II 15. The fixed hole 13 is located within the range of the cut flat surface II 15.

[0036] The diameter of the shaft section where the cut flat surface I 14 is located is larger than the diameter of the shaft section of the clamping reference boss 11. At the end where the clamping pressure plate 2 contacts the cut flat surface I 14, the width of the cut flat surface I 14 is greater than the width of the clamping pressure plate 2.

[0037] The clamping plate 2 is horizontally placed and has an inverted L-shaped structure, a through hole 21 is arranged on the long side of the clamping plate 2, the connecting screw 3 is inserted into the fixing hole 13 through the through hole 21 and is fastened by the compression nut 4, the short side of the clamping plate 2 is in contact with the flat surface I 14 on the auxiliary shaft 1, the end of the long side of the clamping plate 2 is provided with a boss 22, and the boss 22 is in contact with the upper surface of the safety valve plate 7.

[0038] Specifically, the clamping mechanism includes a clamping plate, a connecting screw and a compression nut. The clamping plate is symmetrically arranged on both sides of the process boss and has an inverted L-shaped structure. This unique structure design enables the clamping plate to clamp the side and upper surface of the safety valve plate at the same time. A through hole is arranged on the long side of the clamping plate, the connecting screw is inserted into the fixing hole on the auxiliary shaft through the through hole and is fastened by the compression nut, thereby realizing reliable connection between the clamping plate and the auxiliary shaft. The short side of the clamping plate is in contact with the flat surface I on the auxiliary shaft, thereby providing stable support for the clamping plate. The end of the long side of the clamping plate is provided with a boss, the boss is in contact with the upper surface of the safety valve plate, and the boss applies uniform pressure to the safety valve plate through the tightening of the compression nut, thereby ensuring that the safety valve plate is firmly fixed during machining.

[0039] The auxiliary shaft is provided with a fixing hole for mounting the connecting screw and a flat surface I for contacting the clamping plate, and the fixing hole has a threaded hole structure, thereby facilitating smooth insertion and installation of the connecting screw. The fixing hole is provided with a flat surface II, and the fixing hole is located within the range of the flat surface II. This design enables the connecting screw to be more accurately positioned during installation, and also increases the strength and stability of the connecting part, thereby preventing the connecting screw from loosening or deforming under stress. The diameter of the shaft section where the flat surface I is located is greater than the diameter of the clamping reference boss shaft section. This size design enables the flat surface I to have sufficient area to contact the clamping plate, thereby providing stable support and clamping force. At the end of the clamping plate in contact with the flat surface I, the width of the flat surface I is greater than the width of the clamping plate, thereby ensuring that the clamping plate can be completely placed on the flat surface I, avoiding unstable clamping due to insufficient contact area, and further improving the reliability of clamping and machining accuracy.

[0040] Based on the above-mentioned auxiliary device for machining the safety valve plate, the utility model also relates to a machining method for machining the safety valve plate.

[0041] Step 1: clamp the clamping reference boss on the auxiliary shaft in the four-axis chuck, and tightly clamp the taper hole with a center, find the auxiliary device, assemble the positioning pin, assemble the safety valve plate to be machined to the process boss, find the safety valve plate, tighten the safety valve plate from the back with an internal hexagonal screw, and press the front with the clamping plate 2 to process the A inclined surface 71, the B inclined surface 72 and the related structure of the outer shape.

[0042] The specific operation steps are as follows: the clamping reference boss 11 on the auxiliary shaft 1 in the auxiliary device is accurately clamped in the four-axis chuck, ensuring that the clamping reference boss 11 is tightly matched with the chuck without loosening phenomenon. At the same time, the taper hole 12 at the other end of the auxiliary shaft 1 is used to tightly clamp the taper hole 12, further fixing the auxiliary device to prevent vibration or deviation during processing. The auxiliary device is aligned using professional alignment tools to ensure that the axis of the auxiliary shaft 1 coincides with the rotary axis of the processing equipment, ensuring the processing accuracy. The positioning pin is assembled and accurately inserted into the positioning pin hole 5 on the process boss 8 to provide an accurate positioning reference for the safety valve plate 7 to be processed. The safety valve plate 7 to be processed is carefully assembled to the process boss 8, so that the bottom surface of the safety valve plate 7 is in close contact with the surface of the process boss 8, realizing preliminary positioning.

[0043] The safety valve plate 7 is fixed by tightening the hexagonal screw from the back of the safety valve plate 7 through the screw mounting hole 6. Then, the clamping pressure plate 2 is used to press the front surface of the safety valve plate 7, and the clamping pressure plate 2 is pressed by tightening the pressure nut 4, so that the boss 22 of the clamping pressure plate 2 applies uniform pressure to the upper surface of the safety valve plate 7, ensuring that the safety valve plate 7 is firmly fixed during processing.

[0044] The processing equipment is started, and the A slope 71, B slope 72 and related structure of the safety valve plate 7 are processed. During processing, the processing parameters such as cutting speed, feed rate and cutting depth are strictly controlled, and appropriate cutting tools and cutting fluid are selected according to the material and processing requirements of the safety valve plate 7 to ensure the quality of the processed surface and the dimensional accuracy.

[0045] Step 2: The auxiliary shaft 1 is not moved, the clamping pressure plate 2 is loosened by rotating the pressure nut 4, and the hexagonal screw is loosened, the safety valve plate being processed is removed, and the safety valve plate is rotated 90°, the safety valve plate is tightened from the back by the hexagonal screw again, and the clamping pressure plate 2 is used to press the front surface, and the C slope 73 and D slope 74 and related dimensions are processed.

[0046] The specific operation steps are as follows: after the processing of the A slope 71, B slope 72 and related structure is completed, the auxiliary shaft 1 is kept stationary to avoid positioning errors caused by re-clamping. The clamping pressure plate 2 is loosened by rotating the pressure nut 4, and the hexagonal screw is loosened, and the safety valve plate 7 being processed is carefully removed.

[0047] The removed safety valve plate 7 is rotated 90° to ensure that the C slope 73 and D slope 74 are in the position to be processed. The rotated safety valve plate 7 is assembled to the process boss 8 again, and the clamping method in step 1 is used to tighten the safety valve plate 7 from the back by the hexagonal screw, and the clamping pressure plate 2 is used to press the front surface.

[0048] Start the processing equipment, and process the C bevel 73 and the D bevel 74 and the contour related size of the safety valve valve plate 7. Also, strictly control the processing parameters during processing to ensure the processing quality.

[0049] Step 3: After completing the processing of all bevels and contour structures on the safety valve valve plate 7, the processed safety valve valve plate 7 is taken off from the auxiliary device; professional detection tools such as a three-coordinate measuring instrument, a micrometer, a dial gauge, etc. are used to comprehensively detect each processing part of the safety valve valve plate 7, check whether the dimensional accuracy, shape accuracy and positional accuracy meet the design requirements; the safety valve valve plate 7 that passes the detection is subjected to surface treatment such as deburring, cleaning, rust prevention treatment, etc. to improve the surface quality and corrosion resistance of the safety valve valve plate 7. The treated safety valve valve plate 7 is packaged and stored, waiting for subsequent assembly and use.

[0050] Through the above detailed processing method, the advantages of the auxiliary device can be fully utilized, high-precision processing of the safety valve valve plate 7 is realized, production efficiency and product quality are improved, and production cost is reduced.

[0051] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0052] Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An auxiliary device for machining a safety valve plate, comprising an auxiliary shaft (1) as the main body of the auxiliary device for carrying the part to be machined and connecting it to the machining equipment, characterized in that: It also includes a clamping mechanism and a process boss (8) for placing the safety valve plate (7). The process boss (8) is located in the middle of the auxiliary shaft (1). The clamping mechanism includes a clamping plate (2), a connecting screw (3) and a clamping nut (4). The clamping plate (2) is symmetrically arranged on both sides of the process boss (8). The clamping plate (2) is connected to the auxiliary shaft (1) through the connecting screw (3) and the clamping nut (4). During operation, one end of the clamping plate (2) is in close contact with the auxiliary shaft (1), and the other end of the clamping plate (2) is in close contact with the safety valve plate (7).

2. The auxiliary device for processing safety valve plates as described in claim 1, characterized in that: One end of the auxiliary shaft (1) is provided with a clamping reference boss (11), and the other end of the auxiliary shaft (1) is provided with a tapered hole (12); the clamping reference boss (11) is clamped on the chuck of the machine tool, and the center is pressed against the tapered hole (12).

3. An auxiliary device for processing a safety valve plate as described in claim 1 or 2, characterized in that: The auxiliary shaft (1) is provided with a fixing hole (13) for installing the connecting screw (3) and a cutting surface I (14) for contacting the clamping pressure plate (2). The fixing hole (13) is a threaded hole, and a cutting surface II (15) is provided at the fixing hole (13). The fixing hole (13) is located within the range of the cutting surface II (15).

4. The auxiliary device for processing safety valve plates as described in claim 3, characterized in that: The diameter of the shaft segment where the cutting plane I (14) is located is greater than the diameter of the shaft segment of the clamping reference boss (11). At the end where the clamping pressure plate (2) contacts the cutting plane I (14), the width of the cutting plane I (14) is greater than the width of the clamping pressure plate (2).

5. The auxiliary device for processing a safety valve plate as described in claim 4, characterized in that: The clamping plate (2) is a horizontally placed and inverted L-shaped structure. The long side of the clamping plate (2) is provided with a through hole (21). The connecting screw (3) passes through the through hole (21) and is inserted into the fixing hole (13) and tightened by the clamping nut (4). The short side of the clamping plate (2) is in contact with the cut surface I (14) on the auxiliary shaft (1). The end of the long side of the clamping plate (2) is provided with a boss (22). The boss (22) is in contact with the upper surface of the safety valve plate (7).

6. The auxiliary device for processing a safety valve plate as described in claim 5, characterized in that: The surface of the process boss (8) is higher than the surface of the auxiliary shaft (1). The process boss (8) is provided with a stepped hole (81). The stepped hole (81) has a structure that is large at both ends and small in the middle. The step of the stepped hole (81) is provided with a positioning pin hole (5) and a screw mounting hole (6).

7. The auxiliary device for processing a safety valve plate as described in claim 6, characterized in that: The process boss (8) has a square structure. The safety valve plate (7) is placed on the process boss (8). The bottom surface of the safety valve plate (7) is in contact with the surface of the process boss (8). The unprocessed area of ​​the surface to be processed of the safety valve plate (7) is in contact with the clamping pressure plate (2).

8. The auxiliary device for processing a safety valve plate as described in claim 7, characterized in that: The safety valve plate (7) is provided with inclined surfaces A (71), B (72), C (73) and D (74) to be processed. Inclined surfaces A (71), B (72), C (73) and D (74) are arranged around the safety valve plate (7). Inclined surfaces A (71) and B (72) are arranged opposite to each other, and inclined surfaces C (73) and D (74) are arranged opposite to each other.

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