A method of clamping a profiled valve housing

Abstract

The application relates to a clamping method for a special-shaped valve shell and belongs to the technical field of valve shell machining; the method comprises the following steps: first step: reserving a first process boss in a cylindrical shape on the outer side of the main cylinder on the side opposite to the second flange; second step: reserving a second process boss in a cylindrical shape on the outer side of the first cylinder at the square block; third step: clamping and fixing the first process boss through tooling one; fourth step: clamping and fixing the second process boss through tooling two; fifth step: clamping and fixing the second cylinder through tooling three; sixth step: clamping and fixing the first cylinder through tooling four; and seventh step: clamping and fixing the first flange through tooling five; the method solves the problem that the special-shaped valve shell cannot be clamped by traditional three claws.

Description

Technical Field

[0001] This invention belongs to the field of valve body processing technology, specifically relating to a clamping method for irregularly shaped valve bodies. Background Technology

[0002] like Figure 1 , 2 As shown, the irregularly shaped valve housing includes a hollow main cylinder 1. A first cylinder 2 is fixedly mounted at one end of the main cylinder 1, and a first flange 3 is fixedly mounted at the other end of the main cylinder 1. Both the first cylinder 2 and the first flange 3 are coaxially mounted with the main cylinder 1. A second cylinder 4 and a square block 5 are fixedly mounted on the outer side wall of the first cylinder 2, respectively, located on opposite sides of the first cylinder 2. The axis of the second cylinder 4 is perpendicular to the axis of the first cylinder 2. A second flange 6 is fixedly mounted on the outer side of the main cylinder 1 near the end of the first cylinder 2. The axis of the second flange 6 is perpendicular to the axes of the first cylinder 2 and the second cylinder 4. The main cylinder 1, the first cylinder 2, the second cylinder 4, the first flange 3, and the second flange 6 are all internally connected. Twelve internally threaded holes are evenly arranged around the inner hole on the outer end face of the first cylinder 2, and eight internally threaded holes are evenly arranged around the inner hole on the outer end face of the second cylinder 4. Two stepped holes are provided in the inner hole of the first cylinder 2.

[0003] This product is an irregularly shaped structural part, which cannot be clamped using a traditional three-jaw clamp. If a four-jaw clamp is used, it is easy to be damaged or deformed. Alignment is time-consuming and labor-intensive, the centrifugal force is large, the rotation speed during processing is low, and the surface roughness cannot meet the requirements. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a clamping method for irregularly shaped valve bodies; solving the problem that irregularly shaped valve bodies cannot be clamped using the traditional three-jaw clamp.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution.

[0006] A clamping method for irregularly shaped valve bodies includes the following steps: Step 1: A cylindrical first process boss is reserved on the outer side of the main cylinder opposite the second flange. The axis of the first process boss coincides with the axis of the second flange. An inner cylindrical hole is provided at the outer end face of the first process boss, and an internal thread is provided inside the inner cylindrical hole. Step 2: Reserve a cylindrical second process boss on the outer side of the first cylinder at the square block. The axis of the second process boss coincides with the axis of the second cylinder. A cylindrical hole is provided at the center of the outer end face of the second process boss. Three internal threaded holes are provided around the cylindrical hole on the outer side of the second process boss. Step 3: Fixture 1 is used to clamp and fix the first process boss; insert the third cylinder of fixture 1 into the inner cylindrical hole of the first process boss, the external thread on the outer side of the first ring is screwed into the internal thread of the first process boss, the end face of the second cylinder facing the third cylinder is in contact with the outer end face of the first process boss, and the first cylinder of fixture 1 is clamped by a three-jaw chuck. Step 4: Fixture 2 is used to clamp and fix the second process boss. The right end of the fourteenth cylinder (25) of fixture 2 is inserted into the inner hole of the second process boss. The end face of the second ring is in contact with the outer end face of the second process boss. The three bolt holes on the second ring correspond to the three threaded holes on the outer end face of the second process boss. The three bolts pass through the three bolt holes on the second ring and are screwed into the three internal threaded holes on the outer end face of the second process boss, thereby fixing fixture 2 to the second process boss. The other end of the fourth cylinder of fixture 2 is clamped by a three-jaw chuck. Step 5: Clamp and fix the second cylinder using tooling three. Insert the seventh cylinder of tooling three into the cylindrical hole of the second cylinder. The end face of the sixth cylinder near the seventh cylinder contacts the outer end face of the second cylinder. The three bolt holes on the sixth cylinder correspond to the three threaded holes on the outer end face of the second cylinder. The three bolts pass through the three bolt holes on the sixth cylinder and are screwed into the three internal threaded holes on the outer end face of the second cylinder, thus fixing tooling three to the second cylinder. Clamp the fifth cylinder of tooling three using a three-jaw chuck. Step 6: Clamp and fix the first cylinder using tooling four. Insert the ninth and tenth cylinders of tooling four into the inner hole of the first cylinder, with the ninth and tenth cylinders contacting the two stepped holes. The end face of the third ring contacts the outer end face of the first cylinder. The three bolt holes on the third ring correspond to the three internal threaded holes on the outer end face of the first cylinder. The three bolts pass through the three bolt holes on the third ring and are screwed into the three internal threaded holes on the outer end face of the first cylinder, thus fixing tooling four to the first cylinder. Clamp the eighth cylinder of tooling four using a three-jaw chuck. Step 7: Clamp and fix the first flange using tooling five. Insert the thirteenth cylinder of tooling five into the inner hole of the first flange. The end face of the twelfth cylinder near the thirteenth cylinder contacts the outer end face of the first flange. The three bolt holes on the twelfth cylinder correspond to the three internal threaded holes on the outer end face of the first flange. The three bolts pass through the three bolt holes on the twelfth cylinder and are screwed into the three threaded holes on the outer end face of the first flange, thus fixing tooling five to the first flange. Clamp the eleventh cylinder of tooling five using a three-jaw chuck.

[0007] Furthermore, the tooling includes a first cylinder, a second cylinder, and a third cylinder arranged coaxially in sequence. The outer diameter of the second cylinder is larger than the outer diameters of the first cylinder and the third cylinder. A first ring with an outward protrusion is provided in the middle of the outer side of the third cylinder. The outer diameter of the first ring is smaller than the outer diameter of the second cylinder. An external thread is provided on the outer side of the first ring.

[0008] Furthermore, the tooling second includes a fourth cylinder arranged coaxially in sequence, a second ring fixedly provided on the middle of the outer side of the fourth cylinder, and three bolt holes provided on the second ring, with a bolt inserted into each bolt hole.

[0009] Furthermore, the tooling two includes a fourth cylinder and a fourteenth cylinder in sequence. A second ring is provided between the outer side of the fourth cylinder and the outer side of the fourteenth cylinder. The outer diameter of the second ring is larger than the outer diameter of the fourth cylinder, and the outer diameter of the fourth cylinder is larger than the outer diameter of the fourteenth cylinder. Three bolt holes are provided on the second ring, and a bolt is inserted into each bolt hole.

[0010] Furthermore, the tooling four includes an eighth cylinder, a ninth cylinder, and a tenth cylinder arranged coaxially in sequence. The outer diameter of the eighth cylinder is larger than that of the ninth cylinder, and the outer diameter of the ninth cylinder is larger than that of the tenth cylinder. A third ring is fixedly arranged on the outer side of the ninth cylinder near the end of the eighth cylinder. The outer diameter of the third ring is larger than that of the eighth cylinder. Three bolt holes are provided on the third ring, and a bolt is inserted into each bolt hole.

[0011] Furthermore, the tooling five includes an eleventh cylinder, a twelfth cylinder, and a thirteenth cylinder arranged coaxially in sequence. The outer diameter of the eleventh cylinder is larger than that of the thirteenth cylinder, and the outer diameter of the twelfth cylinder is larger than that of the eleventh cylinder. Three bolt holes are provided on the twelfth cylinder, and a bolt is inserted into each bolt hole.

[0012] The beneficial effects of this invention compared to the prior art are as follows: The clamping method for irregularly shaped valve housings provided by this invention uses a pre-reserved process boss and five types of tooling to clamp the irregularly shaped valve housing with a three-jaw chuck, thereby unifying the datum for turning and milling processes, avoiding the generation of datum non-coincidence errors, overcoming the deformation of thin-walled housing parts during clamping, and realizing the turning of the main structure of the part. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a three-dimensional diagram of an irregularly shaped valve body. Figure 1 ; Figure 2 This is a three-dimensional diagram of an irregularly shaped valve body. Figure 2 ; Figure 3 This is a three-dimensional diagram of the reserved first and second process bosses. Figure 1 ; Figure 4 This is a three-dimensional diagram of the reserved first and second process bosses. Figure 2 ; Figure 5 This is a structural schematic diagram of tooling one; Figure 6 This is the front view of tooling two; Figure 7 This is a side view of tooling two; Figure 8 This is the front view of tooling three; Figure 9 This is a side view of tooling three; Figure 10 This is the front view of tooling four; Figure 11 This is a side view of tooling four; Figure 12 This is the front view of tooling five; Figure 13 This is a side view of tooling five; Among them, 1 is the main cylinder, 2 is the first cylinder, 3 is the first flange, 4 is the second cylinder, 5 is the square block, 6 is the second flange, 7 is the first process boss, 8 is the second process boss, 9 is the first cylinder, 10 is the second cylinder, 11 is the third cylinder, 12 is the first ring, 13 is the fourth cylinder, 14 is the second ring, 15 is the fifth cylinder, 16 is the sixth cylinder, 17 is the seventh cylinder, 18 is the eighth cylinder, 19 is the ninth cylinder, 20 is the tenth cylinder, 21 is the third ring, 22 is the eleventh cylinder, 23 is the twelfth cylinder, 24 is the thirteenth cylinder, and 25 is the fourteenth cylinder. Detailed Implementation

[0014] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0015] like Figure 3-13 As shown, the present invention provides a clamping method for irregularly shaped valve housings, comprising the following steps: Step 1: A cylindrical first process boss 7 is reserved on the outer side of the main cylinder 1 opposite to the second flange 6. The axis of the first process boss 7 coincides with the axis of the second flange 6. An inner cylindrical hole is provided at the outer end face of the first process boss 7, and an internal thread is provided inside the inner cylindrical hole.

[0016] Step 2: A cylindrical second process boss 8 is reserved on the outer side of the first cylinder 2 at the square block 5. The axis of the second process boss 8 coincides with the axis of the second cylinder 4. A cylindrical hole is provided at the center of the outer end face of the second process boss 8. Three internal threaded holes are provided around the cylindrical hole on the outer side of the second process boss 8.

[0017] Step 3: Use tooling to clamp and fix the first process boss 7.

[0018] The tooling includes a first cylinder 9, a second cylinder 10, and a third cylinder 11 arranged coaxially in sequence. The outer diameter of the second cylinder 10 is larger than the outer diameters of the first cylinder 9 and the third cylinder 11. A first protruding ring 12 is provided in the middle of the outer side of the third cylinder 11. The outer diameter of the first ring 12 is smaller than the outer diameter of the second cylinder 10. An external thread is provided on the outer side of the first ring 12.

[0019] The third cylinder 11 of tooling one is inserted into the inner cylindrical hole of the first process boss 7. The external thread on the outer side of the first ring 12 is screwed into the internal thread of the first process boss 7. The end face of the second cylinder 10 facing the third cylinder 11 contacts the outer end face of the first process boss 7. The first cylinder 9 of tooling one is clamped by a three-jaw chuck.

[0020] Step 4: Fixture 2 is used to clamp and fix the second process boss 8.

[0021] The second tooling includes a fourth cylinder 13 and a fourteenth cylinder 25 arranged coaxially in sequence. A second ring 14 is provided between the outer side of the fourth cylinder 13 and the outer side of the fourteenth cylinder 25. The outer diameter of the second ring 14 is larger than the outer diameter of the fourth cylinder 13, and the outer diameter of the fourth cylinder 13 is larger than the outer diameter of the fourteenth cylinder 25. The second ring 14 is provided with three bolt holes, and a bolt is inserted into each bolt hole.

[0022] One end of the fourteenth cylinder 25 of tooling two is inserted into the inner hole of the second process boss 8. The end face of the second ring 14 contacts the outer end face of the second process boss 8. The three bolt holes on the second ring 14 correspond to the three threaded holes on the outer end face of the second process boss 8. The three bolts pass through the three bolt holes on the second ring 14 and are screwed into the three internal threaded holes on the outer end face of the second process boss 8, thereby fixing tooling two to the second process boss 8. The outer surface of the fourth cylinder 13 of tooling two is clamped by a three-jaw chuck.

[0023] Step 5: Use tooling 3 to clamp and fix the second cylinder 4.

[0024] The tooling three includes a fifth cylinder 15, a sixth cylinder 16, and a seventh cylinder 17 arranged coaxially in sequence. The outer diameter of the fifth cylinder 15 is larger than the outer diameter of the seventh cylinder 17, and the outer diameter of the sixth cylinder 16 is larger than the outer diameter of the fifth cylinder 15. Three bolt holes are provided on the sixth cylinder 16, and a bolt is inserted into each bolt hole.

[0025] The seventh cylinder 17 of tooling three is inserted into the cylindrical hole of the second cylinder 4. The end face of the sixth cylinder 16 near the seventh cylinder 17 contacts the outer end face of the second cylinder 4. The three bolt holes on the sixth cylinder 16 correspond to the three threaded holes on the outer end face of the second cylinder 4. The three bolts pass through the three bolt holes on the sixth cylinder 16 and are screwed into the three internal threaded holes on the outer end face of the second cylinder 4, thereby fixing tooling three to the second cylinder 4. The fifth cylinder 15 of tooling three is clamped by a three-jaw chuck.

[0026] Step 6: Use tooling four to clamp and fix the first cylinder 2.

[0027] The tooling four includes an eighth cylinder 18, a ninth cylinder 19, and a tenth cylinder 20 arranged coaxially in sequence. The outer diameter of the eighth cylinder 18 is larger than that of the ninth cylinder 19, and the outer diameter of the ninth cylinder 19 is larger than that of the tenth cylinder 20. A third ring 21 is fixedly arranged on the outer side of the ninth cylinder 19 near the end of the eighth cylinder 18. The outer diameter of the third ring 21 is larger than that of the eighth cylinder 18. Three bolt holes are provided on the third ring 21, and a bolt is inserted into each bolt hole.

[0028] The ninth cylinder 19 and the tenth cylinder 20 of tooling four are inserted into the inner hole of the first cylinder 2. The ninth cylinder 19 and the tenth cylinder 20 are in contact with the two stepped holes. The end face of the third ring 21 is in contact with the outer end face of the first cylinder 2. The three bolt holes on the third ring 21 correspond to the three internal threaded holes on the outer end face of the first cylinder 2. The three bolts pass through the three bolt holes on the third ring 21 and are screwed into the three internal threaded holes on the outer end face of the first cylinder 2, thereby fixing tooling four to the first cylinder 2. The eighth cylinder 18 of tooling four is clamped by a three-jaw chuck.

[0029] Step 7: Clamp and fix the first flange 3 using tooling five.

[0030] The tooling five includes an eleventh cylinder 22, a twelfth cylinder 23, and a thirteenth cylinder 24 arranged coaxially in sequence. The outer diameter of the eleventh cylinder 22 is larger than that of the thirteenth cylinder 24, and the outer diameter of the twelfth cylinder 23 is larger than that of the eleventh cylinder 22. Three bolt holes are provided on the twelfth cylinder 23, and a bolt is inserted into each bolt hole.

[0031] The thirteenth cylinder 24 of tooling five is inserted into the inner hole of the first flange 3. The end face of the twelfth cylinder 23 near the thirteenth cylinder 24 contacts the outer end face of the first flange 3. The three bolt holes on the twelfth cylinder 23 correspond to the three internal threaded holes on the outer end face of the first flange 3. The three bolts pass through the three bolt holes on the twelfth cylinder 23 and are screwed into the three threaded holes on the outer end face of the first flange 3, thereby fixing tooling five to the first flange 3. The eleventh cylinder 22 of tooling five is clamped by a three-jaw chuck.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A clamping method for irregularly shaped valve housings, characterized in that: Includes the following steps, Step 1: A cylindrical first process boss (7) is reserved on the outer side of the main body cylinder (1) opposite to the second flange (6). The axis of the first process boss (7) coincides with the axis of the second flange (6). An inner cylindrical hole is provided at the outer end face of the first process boss (7), and an internal thread is provided inside the inner cylindrical hole. Step 2: Reserve a cylindrical second process boss (8) on the outer side of the first cylinder (2) at the square block (5). The axis of the second process boss (8) coincides with the axis of the second cylinder (4). A cylindrical hole is provided at the center of the outer end face of the second process boss (8). Three internal threaded holes are provided around the cylindrical hole on the outer side of the second process boss (8). Step 3: Fix the first process boss (7) with tooling; insert the third cylinder (11) of tooling into the inner cylindrical hole of the first process boss (7), the external thread of the outer side of the first ring (12) is screwed into the internal thread of the first process boss (7), the end face of the second cylinder (10) facing the third cylinder (11) is in contact with the outer end face of the first process boss (7), and the first cylinder (9) of tooling is clamped by a three-jaw chuck. Step 4: Fix the second process boss (8) with tool 2. Insert the right end of the fourteenth cylinder (25) of tool 2 into the inner hole of the second process boss (8). The end face of the second ring (14) is in contact with the outer end face of the second process boss (8). The three bolt holes on the second ring (14) correspond to the three threaded holes on the outer end face of the second process boss (8). The three bolts pass through the three bolt holes on the second ring (14) and are screwed into the three internal threaded holes on the outer end face of the second process boss (8), thereby fixing tool 2 to the second process boss (8). The other end of the outer side of the fourth cylinder (13) of tool 2 is clamped by a three-jaw chuck. Step 5: Fix the second cylinder (4) with tooling three, insert the seventh cylinder (17) of tooling three into the cylindrical hole of the second process boss (8), and the end face of the sixth cylinder (16) near the seventh cylinder (17) is in contact with the outer end face of the second process boss (8). The three bolt holes on the sixth cylinder (16) correspond to the three threaded holes on the outer end face of the second process boss (8). The three bolts pass through the three bolt holes on the sixth cylinder (16) and are screwed into the three internal threaded holes on the outer end face of the second process boss (8), thereby fixing tooling three to the second process boss (8). The fifth cylinder (15) of tooling three is clamped by a three-jaw chuck. Step 6: Fix the first cylinder (2) with tooling four. Insert the ninth cylinder (19) and the tenth cylinder (20) of tooling four into the inner hole of the first cylinder (2). The ninth cylinder (19) and the tenth cylinder (20) are in contact with the two stepped holes. The end face of the third ring (21) is in contact with the outer end face of the first cylinder (2). The three bolt holes on the third ring (21) correspond to the three internal thread holes on the outer end face of the first cylinder (2). The three bolts pass through the three bolt holes on the third ring (21) and are screwed into the three internal thread holes on the outer end face of the first cylinder (2), thereby fixing tooling four to the first cylinder (2). The eighth cylinder (18) of tooling four is clamped by a three-jaw chuck. Step 7: Fix the first flange (3) with tooling five. Insert the thirteenth cylinder (24) of tooling five into the inner hole of the first flange (3). The side end face of the twelfth cylinder (23) near the thirteenth cylinder (24) is in contact with the outer end face of the first flange (3). The three bolt holes on the twelfth cylinder (23) correspond to the three internal threaded holes on the outer end face of the first flange (3). The three bolts pass through the three bolt holes on the twelfth cylinder (23) and are screwed into the three threaded holes on the outer end face of the first flange (3), thereby fixing tooling five to the first flange (3). Clamp the eleventh cylinder (22) of tooling five with a three-jaw chuck. The tooling includes a first cylinder (9), a second cylinder (10), and a third cylinder (11) arranged coaxially in sequence. The outer diameter of the second cylinder (10) is larger than the outer diameters of the first cylinder (9) and the third cylinder (11). A first ring (12) with an outward protrusion is provided in the middle of the outer side of the third cylinder (11). The outer diameter of the first ring (12) is smaller than the outer diameter of the second cylinder (10). An external thread is provided on the outer side of the first ring (12). The tooling 2 includes a fourth cylinder (13) and a fourteenth cylinder (25) arranged coaxially in sequence. A second ring (14) is provided between the outer side of the fourth cylinder (13) and the outer side of the fourteenth cylinder (25). The outer diameter of the second ring (14) is larger than the outer diameter of the fourth cylinder (13), and the outer diameter of the fourth cylinder (13) is larger than the outer diameter of the fourteenth cylinder (25). The second ring (14) is provided with three bolt holes, and a bolt is inserted into each bolt hole. The tooling includes a fifth cylinder (15), a sixth cylinder (16), and a seventh cylinder (17) arranged coaxially in sequence. The outer diameter of the fifth cylinder (15) is larger than that of the seventh cylinder (17), and the outer diameter of the sixth cylinder (16) is larger than that of the fifth cylinder (15). Three bolt holes are provided on the sixth cylinder (16), and a bolt is inserted into each bolt hole. The tooling four includes an eighth cylinder (18), a ninth cylinder (19), and a tenth cylinder (20) arranged coaxially in sequence. The outer diameter of the eighth cylinder (18) is larger than that of the ninth cylinder (19), and the outer diameter of the ninth cylinder (19) is larger than that of the tenth cylinder (20). A third ring (21) is fixedly provided on the outer side of the ninth cylinder (19) near the end of the eighth cylinder (18). The outer diameter of the third ring (21) is larger than that of the eighth cylinder (18). Three bolt holes are provided on the third ring (21), and a bolt is inserted into each bolt hole. The tooling five includes an eleventh cylinder (22), a twelfth cylinder (23), and a thirteenth cylinder (24) arranged coaxially in sequence. The outer diameter of the eleventh cylinder (22) is larger than that of the thirteenth cylinder (24), and the outer diameter of the twelfth cylinder (23) is larger than that of the eleventh cylinder (22). Three bolt holes are provided on the twelfth cylinder (23), and a bolt is inserted into each bolt hole. The irregularly shaped valve housing includes a hollow main cylinder (1), with a first cylinder (2) fixedly installed at one end of the main cylinder (1) and a first flange (3) fixedly installed at the other end of the main cylinder (1). The first cylinder (2) and the first flange (3) are both coaxially arranged with the main cylinder (1). A second cylinder (4) and a square block (5) are fixedly installed on the outer side wall of the first cylinder (2). The second cylinder (4) and the square block (5) are located on both sides of the first cylinder (2). The axis of the second cylinder (4) is perpendicular to the axis of the first cylinder (2). A second flange (6) is fixedly provided on the outer side of the cylinder (1) at one end near the first cylinder (2). The axis of the second flange (6) is perpendicular to the axis of the first cylinder (2) and the second cylinder (4). The main cylinder (1), the first cylinder (2), the second cylinder (4), the first flange (3), and the second flange (6) are all connected internally. Twelve internal threaded holes are evenly arranged around the inner hole on the outer end face of the first cylinder (2), and eight internal threaded holes are evenly arranged around the inner hole on the outer end face of the second cylinder (4). Two stepped holes are provided in the inner hole of the first cylinder (2).

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