A method for processing a blower body

Abstract

The application relates to the field of air blower manufacturing, in particular to a processing method for an air blower body, which uses a horizontal machining center to process the air blower body by cooperating with an oil passage hole tooling and a reference surface tooling; wherein the air blower comprises a bottom foot and a body, the bottom foot is provided with four parts which are evenly arranged at the rear of the body; the method comprises the following steps: S1, positioning and clamping the air blower; S2, adjusting the perpendicularity of the body and the fastening force of the tooling on the air blower; S3, rough milling each surface and fine milling; S4, punching; S5, replacing the tooling, positioning and clamping the air blower; S6, measuring and adjusting the parallelism of the air blower; S7, rough boring and fine boring the body; S8, drilling, reaming and milling a groove. The application has the advantages of concentrated process, high work efficiency and high machining precision.

Description

Technical Field

[0001] This invention relates to the field of blower manufacturing, and more specifically to a method for processing a blower body. Background Technology

[0002] In the existing technology, the machining of various surfaces and holes on the blower body is often carried out by a combination of multiple CNC lathes and drilling machines. The process is scattered, and multiple sets of fixtures are required to complete the machining of the entire product. The product needs to be clamped repeatedly during the machining process. It is difficult to guarantee the important machining dimensions of the product. In addition, the material transfer distance is long, the equipment investment is large, the floor space is large, the equipment utilization rate is low, the tool wear is fast, the fixtures are difficult to maintain, and the labor intensity of workers is high. Summary of the Invention

[0003] This invention provides a method for machining a blower body. The method uses a horizontal machining center, in conjunction with an oil passage hole tooling box and a reference surface tooling, to complete the machining of the entire blower body in two clamping operations.

[0004] To achieve the above objectives, the present invention employs the following solution:

[0005] A method for machining a blower body, comprising using a horizontal machining center in conjunction with an oil passage hole fixture and a reference surface fixture to machine the blower body; the oil passage hole fixture includes a first base plate, a support, a body tie rod, and a pressure plate; the first base plate is mounted on the worktable of the horizontal machining center and is connected to the worktable by multiple bolts; multiple supports are provided and are mounted on the first base plate to restrict the forward, backward, left, and right movement of the blower; the lower end of the body tie rod is connected to the first base plate, and its upper end is connected to the pressure plate; the pressure plate restricts the vertical movement of the blower; the first base plate also has an adjusting column for raising the body. The system has six upright columns, symmetrically arranged on the front and rear sides; the reference surface fixture includes a second base plate, pads, a gantry frame, and a clamping fixture. The second base plate is located on the upper part of the worktable of the horizontal machining center and is connected to the worktable by multiple bolts. Four pads are located on the upper part of the second base plate, each corresponding to one of the four feet of the blower. The gantry frame is supported on the left and right sides of the second base plate, and a clamping fixture for clamping the machine body is located on the upper part of the gantry frame. The blower includes feet and a machine body, with four feet evenly distributed behind the machine body. The method includes the following steps:

[0006] S1. The blower is positioned by the support, and the body tie rod passes through the inside of the body, which works with the pressure plate to press the body tightly.

[0007] S2. Use a dial indicator to measure the verticality between the machine body and the worktable of the horizontal machining center. Adjust the adjusting column to correct the verticality to the design range. Use a torque wrench to measure and adjust the tightening force of the oil passage hole tool on the machine body.

[0008] S3. Use a face milling cutter to rough mill the four bases. Rotate the worktable 90 degrees, 180 degrees and 270 degrees respectively to rough mill the other three faces. Then change to a finish milling cutter to finish mill each face to meet the requirements of the drawing.

[0009] S4. Change the drill bit and drill holes in the base. Then, use a suitable drill bit to drill holes in the remaining surfaces.

[0010] S5. Install the reference surface fixture onto the workbench, lay the blower down with the bottom feet facing down, connect the four bottom feet to the four pads for positioning, and then clamp the machine body using the clamping fixture on the gantry frame.

[0011] S6. Use a magnetic base to measure the machined surfaces of the main body during initial machining to ensure parallelism;

[0012] S7. Use a rough boring tool to rough bore the holes on the upper and lower sides of the blower, and then switch to a fine boring tool to fine bore the holes on the upper and lower sides to meet the requirements of the drawing.

[0013] S8. Drill holes, tap and ream holes, and use a ball end mill to mill the sealing groove on the upper side of the blower to meet the drawing requirements.

[0014] Preferably, the perpendicularity requirement in step S2 is within 0.01mm, and the torque requirement for the fastening force is between 580N / m and 650N / m.

[0015] Preferably, the allowance left for rough milling in step S3 is 0.1mm-0.3mm, and the surface roughness after rough milling is required to be within Ra0.8.

[0016] Preferably, the parallelism requirement in step S6 is within 0.01 mm.

[0017] Preferably, the lower end of the fuselage tie rod is provided with a tie rod positioning block, which is connected to the first base plate by six bolts.

[0018] Preferably, the upper end of the body pull rod is provided with a thread and a nut, which, together with the thread of the body pull rod, tightly presses the pressure plate against the body; the body pull rod, the pressure plate, and the pull rod positioning block are all provided in two symmetrical positions on the left and right.

[0019] Preferably, there are five backrests, one on each of the left and right sides and the front side, and two on the rear side.

[0020] Preferably, the clamping fixture includes an adjusting bolt, a sleeve, and a locking guide post. The sleeve is fixed to the upper frame of the gantry frame by four bolts. The sleeve has a through hole in the middle. The adjusting bolt passes through the through hole from the upper end of the sleeve and abuts against the locking guide post.

[0021] Furthermore, the lower part of the sleeve is provided with a keyway, and the locking guide post is provided with a flat key that matches the keyway; the lower end of the adjusting bolt is provided with a rotatable locking block, and the upper end of the locking guide post is provided with a locking groove corresponding to the locking block.

[0022] Preferably, there are two clamping fixtures, which are respectively located on the left and right sides of the upper frame of the gantry frame.

[0023] In summary, the advantages of this invention are concentrated processes, high work efficiency, and high machining accuracy. It adopts a horizontal machining center, which can automatically perform machining as long as the positioning is accurate and the clamping force is sufficient. The oil passage hole fixture uses a mountain-mounted positioning and uses the machine body tie rod and pressure plate to clamp the machine body, which can prevent vibration. At this time, the machining center can process the four sides of the blower. The precision surface fixture uses a gantry frame and clamping fixture to clamp the machine body, which can prevent vibration. Measuring perpendicularity and parallelism can ensure the machining accuracy requirements. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the oil passage tooling.

[0025] Figure 2 This is a schematic diagram of the tooling for the reference surface.

[0026] Figure 3 This is a schematic diagram of the oil passage tooling and the blower.

[0027] Figure 4 This is a schematic diagram of the reference surface tooling and the blower.

[0028] Attached reference numerals: 11. First base plate; 12. Backing; 13. Body tie rod; 14. Pressure plate; 15. Adjusting column; 16. Tie rod positioning block; 21. Second base plate; 22. Pad block; 23. Gantry frame; 24. Clamping fixture; 241. Adjusting bolt; 242. Sleeve; 243. Locking guide column; 3. Workbench; 4. Blower; 41. Foot; 42. Body. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] It should also be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] like Figures 1-4 A method for machining a blower body is shown, characterized in that the method uses a horizontal machining center in conjunction with an oil passage hole fixture and a reference surface fixture to machine the blower body; the oil passage hole fixture includes a first base plate 11, a support 12, a body tie rod 13, and a pressure plate 14. The first base plate 11 is mounted on the worktable 3 of the horizontal machining center and is connected to the worktable 3 by multiple bolts. Multiple supports 12 are provided and are mounted on the first base plate 11 to restrict the forward, backward, left, and right movement of the blower 4. The lower end of the body tie rod 13 is connected to the first base plate 11, and its upper end is connected to the pressure plate 14. The pressure plate 14 restricts the vertical movement of the blower 4. The first base plate 11 also has an adjusting column 15 for raising the body. Six adjusting columns 15 are symmetrically arranged on the front and rear sides; the reference surface fixture includes a second base plate 21, pads 22, a gantry frame 23, and a clamping fixture 24. The second base plate 21 is located on the upper part of the worktable 3 of the horizontal machining center and is connected to the worktable 3 by multiple bolts. The pads 22 are located on the upper part of the second base plate 21, and there are four pads 22, which correspond to the four feet 41 of the blower 4 respectively. The two sides of the gantry frame 23 are mounted on the left and right sides of the second base plate 21, and the upper part of the gantry frame 23 is provided with a clamping fixture 24 for clamping the machine body; wherein, the blower 4 includes feet 41 and a machine body 42, and there are four feet 41 evenly distributed behind the machine body 42; the method includes the following steps:

[0033] S1. The blower 4 is positioned by the backrest 12. The body tie rod 13 passes through the inside of the body 42 and works with the pressure plate 14 to press the body 42.

[0034] S2. Use a dial indicator to measure the verticality between the machine body 42 and the worktable of the horizontal machining center. Adjust the verticality to the design range by adjusting the adjusting column 15. Use a torque wrench to measure and adjust the tightening force of the oil passage hole tool on the machine body 42.

[0035] S3. Use a face milling cutter to rough mill the four base feet 41. Rotate the worktable 3 by 90 degrees, 180 degrees and 270 degrees respectively to rough mill the other three faces. Then change to a finish milling cutter to finish mill each face to meet the requirements of the drawing.

[0036] S4. Change the drill bit and drill a hole in the base 41. Then, use a suitable drill bit to drill holes in the remaining surfaces.

[0037] S5. Install the reference surface fixture onto the workbench, lay the blower 4 down with the bottom feet 41 facing down, connect the four bottom feet 41 to the four pads 22 respectively for positioning, and then clamp the machine body 42 with the clamping fixture 24 on the gantry frame 23.

[0038] S6. Use a magnetic base to measure the initial machining surface of the main body 42 to ensure parallelism;

[0039] S7. Use a rough boring tool to rough bore the holes on the upper and lower sides of the blower 4, and then switch to a fine boring tool to fine bore the holes on the upper and lower sides to meet the requirements of the drawing.

[0040] S8. Change drill bit to drill, tap and ream, and use a ball end mill to mill the sealing groove on the upper side of blower 4 to meet the drawing requirements.

[0041] In step S2, the perpendicularity requirement is within 0.01mm, and the torque requirement for the fastening force is between 580N / m and 650N / m; in step S3, the allowance for rough milling is 0.1mm-0.3mm, and the surface roughness requirement after rough milling is within Ra0.8; in step S6, the parallelism requirement is within 0.01mm.

[0042] like Figure 1 As shown, the lower end of the body pull rod 13 is provided with a pull rod positioning block 16, which is connected to the first base plate 11 by six bolts; the upper end of the body pull rod 13 is provided with threads and a nut, which, in conjunction with the threads of the body pull rod 13, tightly presses the pressure plate 14 against the body; the body pull rod 13, the pressure plate 14, and the pull rod positioning block 16 are all provided in two symmetrical positions on the left and right; there are five backrests 12, one on each of the left and right sides and the front side, and two on the rear side.

[0043] like Figure 2As shown, the clamping fixture 24 includes an adjusting bolt 241, a sleeve 242, and a locking guide post 243. The sleeve 242 is fixed to the upper frame of the gantry frame 23 by four bolts. The sleeve 242 has a through hole in the middle. The adjusting bolt 241 passes through the through hole from the upper end of the sleeve 242 and abuts against the locking guide post 243. The lower part of the sleeve 242 has a keyway, and the locking guide post 243 has a flat key that matches the keyway. The lower end of the adjusting bolt 241 has a rotatable locking block, and the upper end of the locking guide post 243 has a locking groove corresponding to the locking block. There are two clamping fixtures 24, which are respectively located on the left and right sides of the upper frame of the gantry frame 23.

[0044] This machining method features concentrated processes, high work efficiency, and high machining accuracy. It utilizes a horizontal machining center, which can automatically perform machining as long as the positioning is accurate and the clamping force is sufficient. The oil passage hole fixture uses a mountain-mounted positioning method and employs machine body tie rods and pressure plates to clamp the machine body, which can prevent vibration. At this time, the machining center can process the four sides of the blower. The precision surface fixture uses a gantry frame and clamping fixtures to clamp the machine body, which can also prevent vibration. Measuring perpendicularity and parallelism can ensure the machining accuracy requirements.

[0045] The foregoing description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A method of processing a blower housing, characterized by, The method uses a horizontal machining center to cooperate with an oil passage hole tooling and a reference surface tooling to machine the blower body; The oil passage hole tooling comprises a first bottom plate (11), a backstop (12), a body pull rod (13) and a pressing plate (14), the first bottom plate (11) is arranged on the workbench (3) of the horizontal machining center, the first bottom plate (11) is connected with the workbench (3) through a plurality of bolts, the backstop (12) is provided with a plurality of backstops (12), the backstop (12) is arranged on the first bottom plate (11) to limit the front and back and left and right movement of the blower (4), the lower end of the body pull rod (13) is connected with the first bottom plate (11), and the upper end is connected with the pressing plate (14), the pressing plate (14) is used to limit the up and down movement of the blower (4), and the adjusting column (15) for raising the body is further arranged on the first bottom plate (11), the adjusting column (15) is provided with six adjusting columns (15), which are symmetrically arranged on the front and back sides; The reference surface tooling comprises a second bottom plate (21), a cushion block (22), a gantry (23) and a pressing tooling (24), the second bottom plate (21) is arranged on the upper part of the workbench (3) of the horizontal machining center, the second bottom plate (21) is connected with the workbench (3) through a plurality of bolts, the cushion block (22) is arranged on the upper part of the second bottom plate (21), the cushion block (22) is provided with four cushion blocks (22), which correspond to the four bottom feet (41) of the blower (4) respectively, the gantry (23) is arranged on the left and right sides of the second bottom plate (21), and the pressing tooling (24) for pressing the body is arranged on the upper part of the gantry (23); The blower (4) comprises a bottom foot (41) and a body (42), the bottom foot (41) is provided with four bottom feet (41) and is arranged at the rear of the body (42); The method comprises the following steps: S1, the blower (4) is positioned by the backstop (12), the body pull rod (13) passes through the inside of the body (42), and the pressing plate (14) is used to press the body (42); S2, the perpendicularity between the body (42) and the workbench of the horizontal machining center is measured by using a dial indicator, the perpendicularity is corrected to the design range by adjusting the adjusting column (15), and the fastening force of the oil passage hole tooling on the body (42) is measured and adjusted by using a torque wrench; S3, four bottom feet (41) are roughly milled by using a face milling cutter, the workbench (3) is rotated by 90 degrees, 180 degrees and 270 degrees respectively, other three surfaces are roughly milled, and then a finishing cutter is used to finish mill each surface to meet the drawing requirements; S4, a drill bit is replaced, the bottom foot (41) is drilled, and then appropriate drill bits are used to drill the remaining surfaces; S5, the reference surface tooling is installed on the workbench, the blower (4) is laid down, the bottom feet (41) face downward, the four bottom feet (41) are connected with the four cushion blocks (22) to position, and the body (42) is clamped by the pressing tooling (24) on the gantry (23); S6, the machined surface of the body (42) is measured by using a magnetic table base to ensure parallelism; S7, use the rough boring cutter to bore the holes on the upper and lower sides of the blower (4), and then use the fine boring cutter to bore the holes on the upper and lower sides to meet the requirements of the drawing; S8, change the drill bit to drill holes, tap holes, and mill the sealing groove on the upper side of the blower (4) with a ball head cutter to meet the requirements of the drawing.

2. The method of claim 1, wherein: The perpendicularity requirement in step S2 is within 0.01 mm, and the torque requirement of the fastening force is between 580 N / m and 650 N / m.

3. The method of claim 1, wherein: The rough milling in step S3 leaves a residual amount of 0.1 mm-0.3 mm, and the roughness requirement after rough milling is within Ra0.

8.

4. The method of claim 1, wherein: The parallelism requirement in step S6 is within 0.01 mm.

5. The method of claim 1, wherein: The lower end of the fuselage pull rod (13) is provided with a pull rod positioning block (16), and the pull rod positioning block (16) is connected with the first bottom plate (11) through six bolts.

6. A method of processing a blower housing according to claim 5, wherein: The upper end of the fuselage pull rod (13) is provided with a screw thread, and a nut is also provided, which tightly presses the pressure plate (14) against the fuselage by cooperating with the screw thread of the fuselage pull rod (13); the fuselage pull rod (13), the pressure plate (14) and the pull rod positioning block (16) are all symmetrically provided with two.

7. The method of claim 1, wherein: The backrest (12) is provided with five, one on each of the left and right sides and the front side, and two on the back side.

8. The method of claim 1, wherein: The pressing tool (24) comprises an adjusting bolt (241), a sleeve (242) and a locking guide column (243), the sleeve (242) is fixed to the upper frame of the gantry (23) through four bolts, the middle part of the sleeve (242) is provided with a through hole, the adjusting bolt (241) passes through the through hole from the upper end of the sleeve (242) and abuts against the locking guide column (243).

9. A method of processing a blower housing according to claim 8, wherein: The lower part of the sleeve (242) is provided with a key groove, and the locking guide column (243) is provided with a flat key matched with the key groove; the lower end of the adjusting bolt (241) is provided with a rotatable clamping block, and the upper end of the locking guide column (243) is provided with a clamping groove corresponding to the clamping block.

10. The method of claim 1 or 9, wherein: The pressing tool (24) is provided with two, which are respectively arranged on the left and right sides of the upper frame of the gantry (23).

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