Die device suitable for main shaft drilling

Abstract

The utility model discloses a die device suitable for main shaft drilling, and mainly relates to the field of flange machining. Comprising a second annular seat, a first annular seat and an annular template which are coaxially connected in sequence, the end face of the side, away from the first annular seat, of the annular template is an annular matching end face, the outer diameter of the annular template is smaller than that of a flange workpiece, and the inner diameter of the annular template is larger than that of the flange workpiece. Two positioning columns matched with flange bolt holes are arranged on the edge of the matching end face, the two positioning columns are distributed at an angle of 90 degrees or 180 degrees relative to the circumferential face of the annular template, and the tail ends of the positioning columns are matched with fasteners for fixing a flange workpiece on the annular template. The tool has the advantages that outer circle machining and main hole machining are completed through one-time clamping, so that the coaxiality of the outer circle machining and the main hole machining is guaranteed, and the requirement for high machining precision is met.

Description

Technical Field

[0001] The utility model relates to the field of flange processing, in particular to a mold device suitable for spindle drilling. Background Art

[0002] When machining flange workpieces, it is necessary to finish and shape the outer circle and inner hole respectively. In the specific operation, a fixture (such as a three-jaw or multi-jaw chuck) is usually used to clamp the workpiece, and then the workpiece is machined and shaped by a turning tool or a boring tool.

[0003] One of the most important quality indicators in the above processing is the coaxiality of the inner and outer circles. Based on the current clamping method, two clampings are required for the outer circle processing and the inner hole processing. Therefore, after the second clamping, in order to improve the coaxiality of the outer circle and the inner hole, the flange needs to be repeatedly measured and clamped and positioned. However, based on the secondary clamping, the coaxiality error problem is still inevitable, which reduces the quality accuracy of the flange and affects its performance in subsequent applications. Utility Model Content

[0004] The utility model aims to provide a mold device suitable for spindle drilling, which can complete outer circle processing and main hole processing in one clamping, thereby ensuring the coaxiality of the two and meeting the high-precision requirements of mechanical processing.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0006] A mold device suitable for spindle drilling comprises a second annular seat, a first annular seat and an annular template which are coaxially connected in sequence, wherein the end face of the annular template away from the first annular seat is an annular mating end face, the outer diameter of the annular template is smaller than the outer diameter of a flange workpiece, the inner diameter of the annular template is larger than the inner diameter of the flange workpiece, a positioning column which matches with the flange bolt hole is provided at the edge of the mating end face, the positioning columns are two, and the two positioning columns are distributed at an angle of 90 degrees or 180 degrees relative to the circumferential surface of the annular template, and the end of the positioning column is matched with a fastener which fixes the flange workpiece on the annular template.

[0007] A first annular seat is fixed on the inner ring of the annular template. The first annular seat is in a circular ring shape. The inner diameter of the first annular seat is adapted to the flange of the flange. A second annular seat is fixed on the inner ring of the first annular seat.

[0008] Three or four symmetrical plane end surfaces are arranged on the circumferential side of the second annular seat, and the plane end surfaces are arranged perpendicular to the radial line of the second annular seat.

[0009] The two positioning columns are distributed at 90 degrees relative to the circumference of the annular template. The positioning columns are straight columns adapted to the bolt holes. A stud head coaxial with the stud head is centrally arranged on the outer end surface of the positioning column.

[0010] The fasteners include fastening bolts and pressure strips. The fastening bolts are threadedly connected to the stud heads. Both ends of the pressure strips are provided with through holes for movably plugging with the positioning columns. The pressure strips are 90-degree arc-shaped plates coaxial with the annular template.

[0011] The two positioning columns are symmetrically arranged relative to the annular template, the root diameter of the positioning column is equal to or larger than the bolt hole of the flange, the diameter of the outer end of the positioning column is smaller than the bolt hole of the flange, the positioning column is a truncated cone-shaped column with a narrow end at the outer end, and a threaded groove is centrally provided on the outer end face of the positioning column. The fastener includes a pressure plate, a portal frame and a screw rod, the pressure plate is an annular member with an inner diameter larger than the positioning column, the two ends of the portal frame are respectively fixed to the edges of the pressure plate, the outer end of the screw rod is centrally fixed on the portal frame, and the screw rod is threadedly matched with the threaded groove.

[0012] An annular groove is arranged on one end surface of the pressing plate close to the annular template, a rubber gasket is fixed in the annular groove, and the rubber gasket protrudes from the inner end surface of the pressing plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Through the transfer cooperation of the mold device, the flange can be stably and accurately positioned on the fixture. Through one clamping, the outer circle and inner hole can be processed in one clamping, reducing the coaxiality error caused by multiple clamping. It also avoids the loss of working hours and labor due to repeated clamping, measurement, and positioning, thereby improving processing efficiency, ensuring processing accuracy, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the clamping state of Example 1 of the utility model.

[0016] Figure 2 It is a schematic diagram of embodiment 1 of the utility model.

[0017] Figure 3 It is a schematic diagram of the clamping state of Example 2 of the utility model.

[0018] Figure 4 It is a schematic diagram of embodiment 2 of the present utility model.

[0019] Figure 5 It is a schematic diagram of the fastener in Example 2 of the utility model.

[0020] Numbers shown in the accompanying drawings:

[0021] 1. Annular template; 2. Matching end face; 3. First annular seat; 4. Second annular seat; 5. Positioning column; 6. Stud head; 7. Pressure strip; 8. Fastening bolt; 9. Through hole; 10. Flat end face; 11. Threaded groove; 12. Pressure plate; 13. Rubber gasket; 14. Door frame; 15. Screw; 16. Variable diameter ring. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application. Embodiment 1:

[0023] This example uses conventional clamping equipment to fix the flange, and then assists in the main hole and outer circle processing. Its main structure includes an annular template 1, and the annular end face of one side of the annular template 1 is a matching end face 2, and the matching end face 2 is used to match with a certain end face of the flange. The diameter of the matching end face 2 is smaller than the diameter of the flange, and does not affect the processing of the outer circle after matching with the flange.

[0024] A first annular seat 3 is fixed on the inner ring of the annular template 1. The first annular seat 3 is annular. The inner diameter of the first annular seat 3 is adapted to the flange of the flange, so as to provide space for the flange of the flange and to leave sufficient space for processing through the extension. The first annular seat 3 is arranged on the side of the annular template 1 away from the mating end face 2.

[0025] The first annular seat 3 is provided with a reducer ring 16 at one end away from the annular template. The outer ring of the reducer ring 16 is fixed to the first annular seat 3. The inner ring of the reducer ring 16 is fixed with a second annular seat 4. The second annular seat 4 is used to cooperate with a clamping tool, such as a four-jaw chuck. The second annular seat 4 is convenient for penetrating into the center of the fixture and cooperating with the claw head of the four-jaw chuck. The clamping is kept stable and reliable during the two-step processing.

[0026] A positioning column 5 is provided at the edge of the mating end face 2 and is fixedly welded thereto. The positioning column 5 is fixed perpendicularly to the mating end face 2. There are two positioning columns 5 and they are distributed at 90 degrees relative to the circumference of the annular template 1. The positioning column 5 is used to be inserted into the bolt hole of the flange to achieve the circumferential positioning of the flange, so that the positioning effect can be kept stable and unchanged in the circumferential direction during processing.

[0027] Therefore, the bolt holes / pin holes of conventional flanges can be matched. The common bolt holes of flanges include 4 holes and 8 holes, and 12 holes and 16 holes can also be seen, all of which can be matched with the two positioning columns 5 distributed at right angles.

[0028] The positioning column 5 is a straight column, and a stud head 6 coaxial with the positioning column 5 is centrally provided on the outer end face of the positioning column 5 (away from the plane end face 10), and a fastening bolt 8 is matched on the stud head 6. A pressure strip 7 is provided between the two positioning columns 5, and through holes 9 are respectively provided at both ends of the pressure strip 7. The through holes 9 penetrate the stud head 6, and the pressure strip 7 is pressed downward on the outer end face of the flange through the fastening bolts 8. The pressure strip 7 is a 90-degree arc. The pressure strip 7 fixed on the positioning column 5 is coaxial with the annular template 1, and thus also coaxial with the flange, which can maximize the central positioning layout and avoid the processing area of ​​the inner hole and the outer circle as far as possible without affecting the machining operation.

[0029] The method of using this mold is:

[0030] Fixing the mold to the four-jaw chuck: Place the second annular seat 4 of the mold in the four-jaw chuck, and let the four-jaw chuck gather and clamp on the four plane end faces 10;

[0031] Positioning of the mold and the flange: Place the flange edge toward the mold, and insert the two bolt holes into the two positioning columns 5 respectively, push the flange inward to make it rest against the mating end face 2, insert the two ends of the pressure strip 7 into the two positioning columns 5, and tighten the pressure strip 7 by tightening the bolts 8, so that the pressure strip 7 can effectively press and fix the flange on the annular template 1.

[0032] Through the transfer cooperation of the mold device, the flange can be stably and accurately positioned on the fixture. Through one clamping, the outer circle and inner hole can be processed in one clamping, reducing the coaxiality error caused by multiple clamping. It also avoids the loss of working hours and labor due to repeated clamping, measurement, and positioning, thereby improving processing efficiency, ensuring processing accuracy, and reducing costs. Embodiment 2:

[0033] This example uses conventional clamping equipment to fix the flange, and then assists in main hole and outer circle processing. Its main structure includes an annular template 1, and the annular end face on one side of the annular template 1 is a matching end face 2. The diameter of the annular template 1 is smaller than the diameter of the flange.

[0034] A first annular seat 3 is fixed on the inner ring of the annular template 1. The first annular seat 3 is in the shape of a circular ring. A reducer ring 16 is provided at one end of the first annular seat 3 away from the annular template. The outer ring of the reducer ring 16 is fixed to the first annular seat 3. The second annular seat 4 is used to cooperate with a clamping tool, such as a four-jaw chuck. Four symmetrical planar end faces 10 are provided on the circumferential side of the second annular seat 4. The planar end faces 10 are perpendicular to the radial lines of the second annular seat 4, so as to facilitate cooperation with the claws of the four-jaw chuck. Since the clamping surface of the claw cannot cooperate with the arc surface, a planar structure is adopted to obtain a larger contact area with the clamping claw, thereby improving the stability of the clamping, thereby maintaining stable and reliable clamping in the two-step processing.

[0035] A positioning column 5 is provided at the edge of the mating end face 2 and is fixedly welded thereto. The positioning column 5 is fixed perpendicular to the mating end face 2. The positioning column 5 is symmetrically arranged relative to the annular template 1, so it is arranged on the radial line of the annular template 1. Therefore, it can be matched with the bolt holes / pin holes of conventional flanges. Common bolt holes of flanges include 4 holes and 8 holes, and 12 holes, 16 holes, etc. can also be seen, all of which can be matched with two diagonally distributed positioning columns 5.

[0036] The diameter of one end of the positioning column 5 close to the annular template 1 is equal to or slightly larger than the bolt hole of the flange, and can be set to be 0-5mm larger. The diameter of the outer end of the positioning column 5 is smaller than the bolt hole of the flange, and can be set to be 1-10mm smaller. The positioning column 5 is a truncated cone-shaped column with a narrow outer end. Its smaller outer end diameter is convenient for quick and easy insertion into the bolt hole, and the slightly larger bottom end diameter enables the circumference of the positioning column 5 to support the flange.

[0037] A thread groove 11 is provided in the center of the outer end face of the positioning column 5. The positioning column 5 is equipped with a fastener, which includes an annular pressing plate 12. An annular groove is provided on the end face of the pressing plate 12 close to the annular template 1. A rubber gasket 13 is fixed in the annular groove. The rubber gasket 13 cooperates with the end face of the flange to effectively protect the end face and avoid scratches and wear. A portal frame 14 is provided on the outer end face of the pressing plate 12 away from the annular groove and is fixedly welded thereto. Both ends of the portal frame 14 are symmetrically fixed to the pressing plate 12. A screw 15 is threadedly connected to the inner thread of the thread groove 11. The outer end of the screw 15 is fixed to the portal frame 14, so that the screw 15, the portal frame 14, and the pressing plate 12 constitute an integrated component - a fastener. The shape of the door frame 14 is convenient for holding and exerting force, and can be used as a handle to screw the fastener, so that the screw 15 gradually cooperates with the thread groove 11, and the pressure plate 12 is pressed on the flange. Based on the truncated cone shape of the positioning column 5 with an inclined circumferential surface, the flange is fixed by contacting the positioning column 5 through the bolt hole, and the fixed position is symmetrical, which can be more conducive to stability during high-speed rotation. Fixing by fasteners does not affect the processing area of ​​the inner hole and the outer circle.

[0038] In this example, the flange is mainly supported and positioned by the truncated cone-shaped positioning columns 5. When the bottom diameter of the positioning columns 5 is larger than the bolt holes of the flange, the supporting points of the flange also fall on the two positioning columns 5. On the one hand, it is easy to assemble. On the other hand, by pressing the flange, the inclined circumference of the positioning columns 5 can be in close contact with the threaded holes, so that the positioning and fixing effects are tighter, seamless fastening can be achieved, and it is more stable during rotation.

Claims

1. A mold device suitable for spindle drilling, characterized in that: The invention comprises a second annular seat (4), a first annular seat (3) and an annular template (1) which are coaxially connected in sequence, wherein the end face of the annular template (1) away from the first annular seat (3) is an annular mating end face (2), the outer diameter of the annular template (1) is smaller than the outer diameter of the flange workpiece, the inner diameter of the annular template (1) is larger than the inner diameter of the flange workpiece, and a positioning column (5) mating with a flange bolt hole is provided at the edge of the mating end face (2), the positioning columns (5) are two, and the two positioning columns (5) are distributed at an angle of 90 degrees or 180 degrees relative to the circumference of the annular template (1), and the ends of the positioning columns (5) are matched with fasteners for fixing the flange workpiece on the annular template (1).

2. A mold device suitable for spindle drilling according to claim 1, characterized in that: A first annular seat (3) is fixed on the inner ring of the annular template (1); the first annular seat (3) is in the shape of a circular ring; the inner diameter of the first annular seat (3) is adapted to the flange of the flange; and a second annular seat (4) is fixed on the inner ring of the first annular seat (3).

3. A mold device suitable for spindle drilling according to claim 2, characterized in that: Three or four symmetrical plane end surfaces (10) are provided on the circumferential side of the second annular seat (4), and the plane end surfaces (10) are arranged perpendicular to the radial line of the second annular seat (4).

4. A mold device suitable for spindle drilling according to claim 1, characterized in that: The two positioning columns (5) are distributed at 90 degrees relative to the circumference of the annular template (1); the positioning columns (5) are straight columns adapted to the bolt holes; a stud head (6) coaxial with the positioning columns (5) is centrally disposed on the outer end surface of the positioning columns (5); The fastener comprises a fastening bolt (8) and a pressure strip (7), wherein the fastening bolt (8) is threadedly connected to the stud head (6), and both ends of the pressure strip (7) are provided with through holes (9) movably plugged into the positioning column (5), and the pressure strip (7) is a 90-degree arc-shaped plate coaxial with the annular template (1).

5. A mold device suitable for spindle drilling according to claim 1, characterized in that: The two positioning columns (5) are symmetrically arranged relative to the annular template (1); the root diameter of the positioning column (5) is equal to or larger than the bolt hole of the flange; the diameter of the outer end of the positioning column (5) is smaller than the bolt hole of the flange; the positioning column (5) is a truncated cone-shaped column with a narrow outer end; a thread groove (11) is centrally provided on the outer end surface of the positioning column (5); the fastener comprises a pressing plate (12), a door frame (14) and a screw rod (15); the pressing plate (12) is an annular member with an inner diameter larger than that of the positioning column (5); the two ends of the door frame (14) are respectively fixed to the edges of the pressing plate (12); the outer end of the screw rod (15) is centrally fixed to the door frame (14); the screw rod (15) is threadedly matched with the thread groove (11).

6. A mold device suitable for spindle drilling according to claim 5, characterized in that: An annular groove is provided on the end surface of one side of the pressing plate (12) close to the annular template (1), a rubber gasket (13) is fixed in the annular groove, and the rubber gasket (13) protrudes from the inner end surface of the pressing plate (12).

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