Quartz under dome product processing jig and processing method

Abstract

The application relates to a quartz lower DOME product processing jig which comprises three graphite jigs, the lower part of the side of each graphite jig is formed with a spherical surface groove, the middle part is formed with an arc surface groove, and the top part is formed with a flange groove; the arc surface groove is connected with the spherical surface groove; the spherical surface grooves of the three graphite jigs enclose a ball head space for accommodating a ball head; the arc surface grooves of the three graphite jigs enclose a pipe body space for accommodating a pipe body; and the flange grooves of the three graphite jigs enclose a flange space for accommodating a flange; the ball head space, the pipe body space and the flange space are coaxially distributed. The processing jig provided by the application encloses the coaxially distributed ball head space, the pipe body space and the flange space by the three graphite jigs, is used for sequentially attaching the ball head, the pipe body and the flange, and can jointly guarantee the coaxiality of the flange, the pipe body and the ball head and the runout of the ball head; meanwhile, the three graphite jigs are designed by using the self-centering principle of three-jaw chucks, and do not need to fix and adjust parts for many times.

Description

Technical Field

[0001] This invention relates to the field of quartz dome-type product processing technology, specifically to a quartz dome-type product processing fixture, and also to a quartz dome-type product processing method. Background Technology

[0002] Traditional processing methods for quartz dome products involve assembling and welding the flanges, plates, tubes, and ball heads from bottom to top. This process requires stacking a large number of graphite blocks to secure the components. The flatness, coaxiality, and runout of the product cannot be guaranteed during welding, leading to long processing times and increasing the risk of product scrapping. It also increases labor and material costs. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a machining fixture for quartz dome-type products, which solves problems such as flatness, coaxiality, and runout during the machining of quartz dome-type products, reduces the scrap rate of products during production, lowers production costs, and improves production efficiency. This invention also provides a machining method using this fixture.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A quartz dome-type product processing fixture includes three graphite fixtures, each graphite fixture having a spherical groove formed on the lower part of its side, an arcuate groove formed in the middle part, and a flange groove formed on the top, with the arcuate groove connected to the spherical groove.

[0006] The spherical grooves of the three graphite fixtures enclose a ball head space for accommodating the ball head, the arc grooves of the three graphite fixtures enclose a tube body space for accommodating the tube body, and the flange grooves of the three graphite fixtures enclose a flange space for accommodating the flange.

[0007] The ball head space, tube body space, and flange space are coaxially distributed.

[0008] Preferably, the flange groove includes a horizontally distributed groove bottom surface and a vertically distributed groove arc side surface. When the flange is placed in the flange groove, the flange bottom surface is fitted with the groove bottom surface of the flange groove, and the flange arc side surface is fitted with the groove arc side surface of the flange groove.

[0009] A method for processing quartz dome-like products includes the following steps:

[0010] Step 1: Cut and grind the flange material to ensure that the thickness, flatness, and parallelism meet the requirements; pickle the processed flange, rinse it with pure water, and let it air dry naturally;

[0011] Step 2: Cut the sheet metal from the rotary plate, process the taper, and grind both ends; pickle the processed rotary plate, rinse with pure water, and air dry naturally;

[0012] Step 3: Take 3 tubes, grind and cut them; pickle the cut tubes, rinse with pure water, and air dry naturally;

[0013] Step 4: Cut the ball head into bar stock, leaving a certain allowance for machining the remaining dimensions at the machining center; pickle the machined ball head, rinse with pure water, and air dry naturally;

[0014] Step 5: Take the cleaned flange, rotary plate, pipe body, ball head and three graphite jigs. First, assemble and weld the rotary plate and the lower surface of the flange. Then, use the graphite jigs to fix the ball head, pipe body and flange in sequence, so that the spherical surface of the ball head fits with the spherical groove, the side of the pipe body fits with the arc groove, the bottom surface of the flange fits with the bottom surface of the groove, and the arc side of the flange fits with the arc side of the groove.

[0015] Step 6: Spot weld the semi-finished products assembled in Step 5 to fill the gaps. Before welding, preheat the welding area thoroughly and use a welding torch to remove impurities and moisture from the welding area.

[0016] Step 7: Preheat the annealing furnace and place the welded quartz dome product into the annealing furnace for annealing treatment;

[0017] Step 8: Rinse and clean the quartz dome product from Step 7, then dry it.

[0018] Compared with the prior art, the beneficial effects of this invention are as follows: The processing fixture provided by this invention consists of three graphite fixtures that enclose a coaxially distributed ball head space, tube body space, and flange space, which are used to sequentially fit the ball head, tube body, and flange, thus ensuring the coaxiality of the flange, tube body, and ball head and the runout of the ball head; at the same time, the three graphite fixtures are designed using the self-centering principle of a three-jaw chuck, eliminating the need for multiple fixings and adjustments of parts. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the assembly of the processing fixture of the present invention with the flange, rotary plate, pipe body, and ball head;

[0020] Figure 2 This is a schematic diagram showing the disassembled processing fixture of the present invention.

[0021] The labels in the diagram are: 1-flange, 2-rotary plate, 3-pipe body, 4-ball head, 5-graphite fixture, 6-spherical groove, 7-arc groove, 8-flange groove, 9-bottom surface of groove, 10-arc side surface of groove. Detailed Implementation

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] Refer to Figure 1 , this embodiment provides a processing fixture for quartz lower DOME products, which is suitable for welding and processing the flange 1, rotating plate 2, pipe body 3, and ball head 4 of DOME products.

[0025] Refer to Figure 1 and Figure 2 , the processing fixture includes three graphite fixtures 5. The vertical cross-section of each graphite fixture 5 is L-shaped. Of course, in other embodiments, the graphite fixture can also be of other shapes, not limited to the L-shaped appearance. A spherical surface groove 6 is formed at the lower part of the side surface of each graphite fixture 5, an arc surface groove 7 is formed in the middle, and a flange groove 8 is formed at the top. The arc surface groove 7 is connected to the spherical surface groove 6. The spherical surface grooves 6 of the three graphite fixtures 5 enclose a spherical head space for accommodating the ball head 4. The arc surface grooves 7 of the three graphite fixtures 5 enclose a pipe body space for accommodating the pipe body 3. The flange grooves 8 of the three graphite fixtures 5 enclose a flange space for accommodating the flange 1.

[0026] The flange groove 8 includes a horizontally distributed groove bottom surface 9 and a vertically distributed groove arc side surface 10. When placing the flange 1 in the flange groove 8, the flange bottom surface is fitted to the groove bottom surface 9 of the flange groove 8, and the flange arc surface is fitted to the groove arc side surface 10 of the flange groove 8.

[0027] The above-mentioned spherical head space, pipe body space, and flange space are coaxially distributed. When using the processing fixture, the three graphite fixtures are arranged facing each other, so that the three graphite fixtures 5 enclose the spherical head space, pipe body space, and flange space. The spherical surface of the ball head 4 is fitted to the spherical surface groove 6, the side surface of the pipe body 3 is fitted to the arc surface groove 7, the bottom surface of the flange 1 is fitted to the groove bottom surface 9, and the arc side surface of the flange 1 is fitted to the groove arc side surface 10. In this way, the coaxiality of the flange, pipe body, and ball head and the runout of the ball head are jointly ensured by the three graphite fixtures 5.

[0028] The three graphite jigs 5 provided by this invention are designed using the self-centering principle of a three-jaw chuck, eliminating the need for multiple fixings and adjustments of parts; they can solve problems such as coaxiality and runout in the traditional quartz dome processing, reduce the scrap rate of products during production, reduce labor and time costs, and improve production efficiency.

[0029] This embodiment also provides a method for processing DOME-type products under quartz, comprising the following steps:

[0030] Step 1: Cut flange 1 into sheet metal according to product dimensions using a saw, cut ring material using water jet cutting, and process the top and bottom surfaces of the material using a surface grinder to ensure the material's thickness, flatness, and parallelism requirements. Machin the remaining dimensions using a machining center. Pickle the processed flange, rinse it with pure water, and let it air dry naturally.

[0031] Step 2: The rotary plate 2 is cut into sheet metal according to the product size by a saw, the sheet metal is laser-cut into shape, the taper is processed by a rotary milling machine, and then the two ends of the part are ground and cut off; the processed rotary plate is pickled, rinsed with pure water, and air-dried naturally;

[0032] Step 3: Take 3 tubes, grind them and cut them to the required length for the product; pickle the cut tubes, rinse them with pure water, and let them air dry naturally;

[0033] Step 4: The ball head 4 is cut into bar stock by a drilling machine according to the product size, leaving a certain allowance for the machining center to process the remaining size; the processed ball head is pickled, rinsed with pure water, and air-dried naturally;

[0034] Step 5: Take the cleaned flange 1, rotary plate 2, pipe body 3, ball head 4 and three graphite jigs 5; first, assemble and weld the lower plane of rotary plate 2 and flange 1, grind and repair the welding marks, and make the welded parts smooth and beautiful; then use the graphite jigs to fix the ball head 4, pipe body 3 and flange 1 in sequence, so that the spherical surface of the ball head fits with the spherical groove, the side of the pipe body fits with the arc groove, the bottom surface of the flange fits with the bottom surface of the groove, and the arc side of the flange fits with the arc side of the groove.

[0035] Step 6: Spot weld the semi-finished products assembled in Step 5. Adjust the dimensions according to the drawings, and then fill the gaps between each component until they are completely fused together. Before welding, preheat the welding area thoroughly and use a welding torch to remove impurities and moisture from the welding area to avoid uneven heating during the filling process, which can cause cracks, bubbles, and other problems.

[0036] Step 7: Preheat the annealing furnace. Place the welded quartz dome product into the annealing furnace for annealing. Slowly heat the furnace to 1150℃ and continue annealing for about 30-50 minutes. Turn off the annealing furnace. After removing the product, place it on the annealing furnace for 10-15 minutes, and then place it on a graphite plate to cool slowly to room temperature.

[0037] Step 8: Place the quartz DOME product from Step 7 into a pure water washing tank for rinsing and cleaning, and then dry it in a dust-free drying room.

[0038] Step 9: Inspect the quartz under-dome product dried in Step 8. Refer to the drawings and use instruments such as vernier calipers, coordinate measuring machines, and roughness testers to check the dimensions, positional tolerances, and roughness of the quartz crucible. Pack the qualified quartz under-dome products into the warehouse.

Claims

1. A quartz dome-type product processing fixture, characterized in that: It is composed of three graphite jigs. The vertical cross section of each graphite jig is L-shaped. Each graphite jig consists of a horizontal part with a triangular cross section and a vertical part with a quadrilateral cross section connected to the rear side of the upper surface of the horizontal part. The vertical cross sections at both ends of the vertical part and the vertical cross sections at both ends of the horizontal part are on the same plane. The rear side of the vertical part and the rear side of the horizontal part are on the same plane. Each horizontal part has a concave spherical groove at the lower front and a concave arc groove at the upper front. Each vertical part has a concave flange groove at the top. The arc groove and the spherical groove are connected. The spherical grooves of the three graphite fixtures enclose a ball head space for accommodating the ball head, the arc grooves of the three graphite fixtures enclose a tube body space for accommodating the tube body, and the flange grooves of the three graphite fixtures enclose a flange space for accommodating the flange. The ball head space, tube body space, and flange space are coaxially distributed. When using the processing fixtures, three graphite fixtures are arranged facing each other. After the spherical surface of the ball head fits into the spherical groove, the side of the tube body fits into the arc groove, and the flange fits into the flange groove, there is a gap space between the adjacent end faces of two adjacent graphite fixtures. The connection between the top of the tube body and the spiral plate is higher than the upper surface of the transverse part. The connection between the ball head and the bottom of the tube body partially exposes the ball head space and the tube body space. The assembled semi-finished products are spot welded.

2. The quartz dome-type product processing fixture according to claim 1, characterized in that: The flange groove includes a horizontally distributed groove bottom surface and a vertically distributed groove arc side surface. When the flange is placed in the flange groove, the flange bottom surface is fitted with the groove bottom surface of the flange groove, and the flange arc side surface is fitted with the groove arc side surface of the flange groove.

3. A processing method for a quartz dome-type product processing fixture as described in claim 1, characterized in that, It includes the following steps: Step 1: Cut and grind the flange material to ensure that the thickness, flatness, and parallelism meet the requirements; pickle the processed flange, rinse it with pure water, and let it air dry naturally; Step 2: Cut the sheet metal from the rotary plate, process the taper, and grind both ends; pickle the processed rotary plate, rinse with pure water, and air dry naturally; Step 3: Take the tube material, grind it, and cut it; pickle the cut tube, rinse it with pure water, and let it air dry naturally; Step 4: Cut the ball head into bar stock, leaving a certain allowance for machining the remaining dimensions at the machining center; pickle the machined ball head, rinse with pure water, and air dry naturally; Step 5: Take the cleaned flange, rotary plate, pipe body, ball head and three graphite jigs. First, assemble and weld the rotary plate and the lower surface of the flange. Then, use the graphite jigs to fix the ball head, pipe body and flange in sequence, so that the spherical surface of the ball head fits with the spherical groove, the side of the pipe body fits with the arc groove, the bottom surface of the flange fits with the bottom surface of the groove, and the arc side of the flange fits with the arc side of the groove. Step 6: Spot weld the semi-finished products assembled in Step 5 to fill the gaps. Before welding, preheat the welding area thoroughly and use a welding torch to remove impurities and moisture from the welding area. Step 7: Preheat the annealing furnace and place the welded quartz dome product into the annealing furnace for annealing treatment; Step 8: Rinse and clean the quartz DOME product from Step 7, and then dry it.

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