Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide an auxiliary device for processing a safety valve plate, which has a simple structure and is convenient to use.
In order to achieve the above, the technical scheme is that the auxiliary device for processing the valve plate of the safety valve comprises an auxiliary shaft, a clamping mechanism, a process boss and clamping plates, wherein the auxiliary shaft is used as a main body of the auxiliary device and used for bearing a part to be processed and connected with processing equipment, the process boss is arranged in the middle of the auxiliary shaft, the clamping mechanism comprises clamping pressing plates, connecting screws and compression nuts, the clamping pressing plates are symmetrically arranged on two sides of the process boss, the clamping pressing plates are connected to the auxiliary shaft through the connecting screws and the compression nuts, one ends of the clamping pressing plates are in tight contact with the auxiliary shaft, and the other ends of the clamping pressing plates are in tight contact with the valve plate of the safety valve.
Furthermore, one end of the auxiliary shaft is provided with a clamping reference boss, the other end of the auxiliary shaft is provided with a taper hole, the clamping reference boss is clamped on a chuck of a processing machine tool, and the center is tightly propped against the taper hole.
Further, the auxiliary shaft is provided with a fixing hole for installing the connecting screw rod and a cutting plane I for contacting with the clamping pressing plate, the fixing hole is a threaded hole, a cutting plane II is arranged at the fixing hole, and the fixing hole is positioned in the range of the cutting plane II.
Further, the diameter of the shaft section where the cutting plane I is located is larger than that of the shaft section of the clamping reference boss, and the width of the cutting plane I is larger than that of the clamping pressing plate at one end where the clamping pressing plate is in contact with the cutting plane I.
Further, the clamping clamp plate is the L type structure of level placement and back-off, is equipped with the through-hole on the long edge of clamping clamp plate, and connecting screw passes the through-hole and inserts the fixed orifices and fasten through gland nut, and the minor face of clamping clamp plate is equipped with the boss with the tip on the epaxial cutting plane I laminating contact of auxiliary shaft, the boss is in laminating contact with the upper surface of relief valve plate.
Further, the surface of the process boss is higher than the surface of the auxiliary shaft, a stepped hole is formed in the process boss, the stepped hole is of a structure with two large ends and a small middle, and a positioning pin hole and a screw mounting hole are formed in the step of the stepped hole.
Further, the process boss is of a square structure, the safety valve plate is placed on the process boss, the bottom surface of the safety 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 plate is in contact with the clamping pressing plate.
Further, an A inclined plane, a B inclined plane, a C inclined plane and a D inclined plane which are to be processed are arranged on the safety valve plate, the A inclined plane, the B inclined plane, the C inclined plane and the D inclined plane are arranged on the periphery of the safety valve plate, the A inclined plane and the B inclined plane are oppositely arranged, and the C inclined plane and the D inclined plane are oppositely arranged.
The technical scheme of the utility model has the advantages that:
1. the utility model realizes the conversion from the traditional horizontal machining center to the vertical machining center through the auxiliary device, greatly releases the horizontal machining capacity, reduces one process boss through the optimization of the machining process, reduces the size of blanks and greatly reduces the manufacturing cost of the products.
2. The processing method of the utility model realizes the conversion from the traditional horizontal processing center to the vertical processing center, greatly releases the horizontal processing capacity and saves the processing time by about 40 percent. The unique design and the reasonable clamping mode of the auxiliary device ensure the stability of the safety valve plate in the machining process, effectively avoid the displacement caused by the action of cutting force and ensure the machining precision. One process boss is reduced through optimization of the processing technology, the size of a blank is reduced, and the raw material cost is saved by about 30%. The auxiliary device and the processing method can be popularized to processing of products of the same series of other models, and have good universality and economy.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the utility model and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the whole structure of an auxiliary device of the present utility model;
FIG. 2 is a schematic view of the bottom surface structure of the auxiliary device of the present utility model;
FIG. 3 is a schematic cross-sectional view of an auxiliary device of the present utility model;
FIG. 4 is a partial schematic view of an auxiliary device of the present utility model;
FIG. 5 is a schematic view of step 1 of the processing of a valve plate of the safety valve of the present utility model;
Fig. 6 is a schematic diagram of step 1 in the process of machining a valve plate of the safety valve.
The marks in the drawing are respectively 1, an auxiliary shaft, 11, a clamping reference boss, 12, a taper hole, 13, a fixing hole, 14, a cutting plane I, 15, a cutting plane II, 2, a clamping pressing plate, 21, a through hole, 22, a boss, 3, a connecting screw, 4, a compression nut, 5, a positioning pin hole, 6, a screw mounting hole, 7, a safety valve plate, 71, an A inclined plane, 72, a B inclined plane, 73, a C inclined plane, 74, a D inclined plane, 8, a process boss, 81 and a stepped hole.
Detailed Description
The present utility model will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present utility model more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1-6, an auxiliary device for processing a valve plate of a safety valve comprises an auxiliary shaft 1, a clamping mechanism, a process boss 8, a clamping mechanism and a safety valve plate 7, wherein the main body of the auxiliary shaft 1 is used for bearing a part to be processed and is connected with processing equipment, the process boss 8 is arranged in the middle of the auxiliary shaft 1, the clamping mechanism comprises a clamping pressing plate 2, a connecting screw 3 and a compression nut 4, the clamping pressing plate 2 is symmetrically arranged on two sides of the process boss 8, the clamping pressing plate 2 is connected to the auxiliary shaft 1 through the connecting screw 3 and the compression nut 4, one end of the clamping pressing plate 2 is in tight contact with the auxiliary shaft 1 during operation, and the other end of the clamping pressing plate 2 is in tight contact with the safety valve plate 7.
One end of the auxiliary shaft 1 is provided with a clamping reference boss 11, the other end of the auxiliary shaft 1 is provided with a taper hole 12, the clamping reference boss 11 is clamped on a chuck of a processing machine tool, and a center abuts against the taper hole 12.
Specifically, the auxiliary shaft serves as a main body of the auxiliary device for carrying a relief valve plate to be machined and establishing connection with machining equipment. One end of the auxiliary shaft is provided with a clamping reference boss, the boss has accurate size and shape, and can be matched with a chuck of a processing machine tool accurately, so that a stable clamping reference is provided for the whole auxiliary device. The other end is provided with a taper hole, and in the machining process, the center is tightly propped against the taper hole, so that the fixing stability of the auxiliary device on machining equipment is further enhanced, vibration or deflection is prevented during high-speed machining or strong cutting, and the machining quality is ensured.
The surface of the process boss 8 is higher than the surface of the auxiliary shaft 1, a stepped hole 81 is arranged in the process boss 8, the stepped hole 81 is of a structure with two large ends and a small middle, and a positioning pin hole 5 and a screw mounting hole 6 are arranged on the step of the stepped hole 81.
The process boss 8 is of 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, and the non-processing area of the surface to be processed of the safety valve plate 7 is in contact with the clamping pressing plate 2.
The safety valve plate 7 is provided with an A inclined plane 71, a B inclined plane 72, a C inclined plane 73 and a D inclined plane 74 to be processed, the A inclined plane 71, the B inclined plane 72, the C inclined plane 73 and the D inclined plane 74 are arranged on the periphery of the safety valve plate 7, the A inclined plane 71 is opposite to the B inclined plane 72, and the C inclined plane 73 is opposite to the D inclined plane 74.
The process boss is fixedly arranged in the middle of the auxiliary shaft, and a stable placing platform is provided for the valve plate of the safety valve. The surface of the process boss is higher than the surface of the auxiliary shaft, so that the safety valve plate is convenient to install and position. The inside of the safety valve plate is provided with the stepped holes, and the structure with large two ends and small middle is adopted, so that the weight of a process boss is reduced, the overall quality of an auxiliary device is reduced, the operation and the installation are convenient, and the positioning pin holes and screw mounting holes can be formed in the steps of the stepped holes for accurately positioning and fixing the safety valve plate, and the position accuracy of the safety valve plate in the machining process is ensured. The process boss is of a square structure, the regular shape is convenient to process and manufacture, and a stable supporting surface is provided for placing the safety valve plate.
The auxiliary shaft 1 is provided with a fixing hole 13 for installing the connecting screw 3 and a cutting plane I14 for contacting with the clamping pressing plate 2, the fixing hole 13 is a threaded hole, a cutting plane II15 is arranged at the fixing hole 13, and the fixing hole 13 is positioned in the range of the cutting plane II 15.
The diameter of the shaft section where the cutting plane I14 is located is larger than that of the shaft section of the clamping reference boss 11, and the width of the cutting plane I14 is larger than that of the clamping pressing plate 2 at one end where the clamping pressing plate 2 contacts with the cutting plane I14.
The clamping clamp plate 2 is the L type structure of level placement and back-off, and clamping clamp plate 2 long side is equipped with through-hole 21, and connecting screw 3 inserts fixed orifices 13 and fasten through gland nut 4 through-hole 21, and clamping clamp plate 2's minor face and the on-axis I14 laminating contact of cutting of auxiliary shaft 1, clamping clamp plate 2 long limit tip are equipped with boss 22, and boss 22 and the upper surface laminating contact of relief valve plate 7.
The clamping mechanism comprises a clamping pressing plate, a connecting screw and a compression nut. The clamping pressing plates are symmetrically arranged on two sides of the process boss and are of an L-shaped structure which is horizontally placed and inverted. The unique structural design enables the clamping pressing plate to simultaneously clamp the side face and the upper surface of the safety valve plate. The long edge of the clamping pressing plate is provided with a through hole, and the connecting screw rod penetrates through the through hole and is inserted into the fixing hole on the auxiliary shaft and is fastened through the compression nut, so that the clamping pressing plate is reliably connected with the auxiliary shaft. The short side of the clamping pressing plate is in fit contact with the cutting plane I on the auxiliary shaft, so that stable support is provided for the clamping pressing plate. The end of the long side of the clamping pressing plate is provided with a boss, the boss is in fit contact with the upper surface of the safety valve plate, and even pressure is applied to the safety valve plate by the boss through tightening of the compression nut, so that the safety valve plate is firmly fixed in the machining process.
The auxiliary shaft is provided with a fixing hole for installing the connecting screw rod and a cutting plane I for contacting with the clamping pressing plate, and the fixing hole is of a threaded hole structure, so that the connecting screw rod can be conveniently inserted and installed smoothly. The fixing hole is provided with the cutting plane II, and the fixing hole is positioned in the cutting plane II range, so that the connecting screw can be positioned more accurately during installation, meanwhile, the strength and stability of the connecting part are also improved, and the connecting screw is prevented from loosening or deforming during stress. The diameter of the shaft section where the cutting plane I is located is larger than that of the shaft section of the clamping reference boss, and the size design ensures that the cutting plane I has enough area to be in contact with the clamping pressing plate, so that stable support and clamping force are provided. At the one end of clamping clamp plate and cutting plane I contact, the width of cutting plane I is greater than the width of clamping clamp plate, ensures that clamping clamp plate can place on cutting plane I completely, avoids the unstable condition emergence of clamping because of area of contact is not enough, further improves the reliability and the machining precision of clamping.
Based on the auxiliary device for processing the valve plate of the safety valve, the utility model also relates to a processing method for processing the valve plate of the safety valve, which comprises the following steps:
Clamping a clamping reference boss on an auxiliary shaft in an auxiliary device in a four-shaft chuck, tightly jacking a taper hole by using a tip, aligning the auxiliary device, assembling a positioning pin, assembling a safety valve plate to be processed on a process boss, aligning the safety valve plate, tensioning the safety valve plate from the back by using an inner hexagon screw, compacting the front by using a clamping pressing plate 2, and processing an A inclined plane 71, a B inclined plane 72 and an appearance related structure;
The method comprises the specific operation steps that a clamping reference boss 11 on an auxiliary shaft 1 in an auxiliary device is accurately clamped in a four-shaft chuck, so that the clamping reference boss 11 is tightly matched with the chuck, and no loosening phenomenon exists. Simultaneously, the tip is used for tightly pushing the taper hole 12 at the other end of the auxiliary shaft 1, so that an auxiliary device is further fixed, and vibration or deflection is prevented in the machining process. The auxiliary device is aligned by using a professional alignment tool, so that the axis of the auxiliary shaft 1 is ensured to coincide with the rotation axis of the processing equipment, and the processing precision is ensured. And (3) assembling a positioning pin, accurately inserting the positioning pin into the positioning pin hole 5 on the process boss 8, and providing an accurate positioning reference for the safety valve plate 7 to be processed. The safety valve plate 7 to be processed is carefully assembled on 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, and preliminary positioning is realized.
The inner hexagon screw is adopted to penetrate through the screw mounting hole 6 from the back of the safety valve plate 7 and is screwed, and the safety valve plate 7 is tensioned and fixed from the back. Then, the front surface of the safety valve plate 7 is pressed by using the clamping pressing plate 2, and the boss 22 of the clamping pressing plate 2 applies uniform pressure to the upper surface of the safety valve plate 7 by screwing the pressing nut 4, so that the safety valve plate 7 is ensured to be firmly fixed in the processing process.
Starting the processing equipment to process the A inclined plane 71, the B inclined plane 72 and the appearance related structure of the safety valve plate 7. During the machining process, machining parameters such as cutting speed, feeding amount, cutting depth and the like are strictly controlled, and proper cutters and cutting fluid are selected according to the material and the machining requirement of the safety valve plate 7, so that the quality of the machined surface and the dimensional accuracy are ensured.
And 2, the auxiliary shaft 1 is fixed, the compression nut 4 is rotated to loosen the clamping pressing plate 2, meanwhile, the inner hexagon screw is loosened, the safety valve plate which is being processed is taken out, the safety valve plate is rotated by 90 degrees, the safety valve plate is tensioned from the back by adopting the inner hexagon screw again, the front surface is compressed by the clamping pressing plate 2, and the C inclined plane 73, the D inclined plane 74 and the relevant dimension of the appearance are processed.
The specific operation steps are that after finishing the processing of the A inclined plane 71, the B inclined plane 72 and the related structure of the appearance, the auxiliary shaft 1 is kept still, so as to avoid positioning errors caused by re-clamping. The compression nut 4 is rotated to enable the clamping pressing plate 2 to loosen the compression of the safety valve plate 7. At the same time, the hexagon socket screw is loosened and the safety valve plate 7 being processed is carefully taken out.
The safety valve plate 7 taken out is rotated by 90 ° to ensure that the C-slope 73 and the D-slope 74 are in the positions to be machined. And assembling the rotated safety valve plate 7 on the process boss 8 again, tensioning the safety valve plate 7 from the back by adopting an inner hexagon screw according to the clamping method in the step 1, and compacting the front by using the clamping pressing plate 2.
The machining equipment is started to machine the C inclined plane 73 and the D inclined plane 74 of the safety valve plate 7 and the relevant dimension of the appearance. Also, the processing parameters are strictly controlled during the processing process, so that the processing quality is ensured.
Step 3, after finishing the processing of all inclined planes and appearance structures on the safety valve plate 7, taking the processed safety valve plate 7 off from the auxiliary device, using professional detection tools such as a three-coordinate measuring instrument, a micrometer, a dial indicator and the like to comprehensively detect each processing part of the safety valve plate 7, checking whether the dimensional accuracy, the shape accuracy and the position accuracy meet the design requirements, and carrying out surface treatment such as deburring, cleaning, rust prevention treatment and the like on the safety valve plate 7 which is qualified in detection to improve the surface quality and the corrosion resistance of the safety valve plate 7. And packaging and storing the processed safety valve plate 7, and waiting for subsequent assembly and use.
Through the above detailed processing method, the advantages of the auxiliary device can be fully utilized, high-precision processing of the safety valve plate 7 is realized, the production efficiency and the product quality are improved, and the production cost is reduced.
It will be appreciated by persons skilled in the art that the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the utility model is limited to these examples, that combinations of technical features in the above embodiments or in different embodiments may also be implemented in any order, and that many other variations of the different aspects of the utility model as described above exist, which are not provided in detail for the sake of brevity.
Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.