Angular taper hole fitting assembly tool and assembly method

Abstract

A kind of angular taper hole fitting assembly assembling tool, it is characterized in that, including positioning card (5), positioning pin (6), fastening screw (7) and open copper bushing (8), the positioning card (5) is sheet structure, its lower part has slightly larger center circular hole (51) than the third step (113) outer diameter of step shaft (11) of gas rudder (1);Center circular hole (51) right side protruding boss (52), boss (52) center position is set through slot (521), through slot (521) is communicated with center circular hole (51) through one side circumference;Boss (52) has through threaded hole (522), threaded hole (522) transversely passes through through slot (521), fastening screw (7) is matched with threaded hole (522) by via hole, the taper hole (1121) of the step shaft of the present application and rocker arm taper hole (23) are once clamped to complete processing, ensure that the taper hole of both and screw tail taper pin is closely matched, assembly efficiency is improved 100%.

Description

TECHNICAL FIELD

[0001] The application relates to an assembly tool and an assembly method for an angular taper hole matched assembly. BACKGROUND

[0002] The angular taper hole matched assembly related to the prior art is composed of four parts: a gas vane 1, a rocker arm 2, a screw tail taper pin 3 and a nut 4. During assembly, numerical control machine tools are used to process angular taper holes with the same taper as the screw tail taper pin 3 on the stepped shaft 11 of the gas vane 1 and the circular ring sleeve 21 of the rocker arm 2, namely the stepped shaft taper hole 1121 and the rocker arm taper hole 23. Then the circular ring sleeve of the rocker arm 2 is sleeved on the stepped shaft 11 of the gas vane 1 to ensure that the angular taper holes 23 correspond to each other. Finally, the threaded end of the screw tail taper pin 3 is sequentially threaded through the stepped shaft taper hole 1121 of the gas vane 1 and the rocker arm taper hole 23, and is screwed with the nut 4 to complete the assembly. The assembly method of the angular taper hole matched assembly has the following defects:

[0003] (1) The assembly process is complicated. The angular taper holes must be processed on the stepped shaft of the vane surface and the circular ring of the rocker arm by using numerical control machine tools, and then the angular taper holes are assembled manually by a bench worker, so that the efficiency is low.

[0004] (2) Due to clamping alignment and machining errors, the consistency of the two angular taper holes processed separately is poor, and there is a problem that the stepped shaft 11 of the gas vane 1 and the rocker arm 2 are not tightly matched with the screw tail taper pin 4. SUMMARY

[0005] The application provides an assembly tool and an assembly method for an angular taper hole matched assembly to overcome the defects of the prior art and ensure that there is no error in the installation angle between the stepped shaft 11 of the gas vane 1 and the rocker arm 2 and the screw tail taper pin 4, and there is no gap between them.

[0006] An assembly tool for an angular taper hole matched assembly, characterized by comprising a positioning clamp 5, a positioning pin 6, a fastening screw 7 and an open copper sleeve 8,

[0007] The positioning card 5 is a sheet structure, and the lower part of the positioning card 5 has a center circular hole 51 with a diameter slightly larger than that of the third step 113 of the stepped shaft 11 of the gas vane 1; a boss 52 is extended to the right of the center circular hole 51, a through slot 521 is arranged at the center position of the boss 52, and the through slot 521 is communicated with the center circular hole 51 through one side of the circumference; the boss 52 has a through threaded hole 522, the threaded hole 522 is transversely through the through slot 521, the fastening screw 7 is matched with the threaded hole 522 through the through hole, and the fastening screw 7 is used for tightening the center circular hole 51 of the positioning card 5; a small circular hole 53 is arranged above the center circular hole 51 of the positioning card 5, the diameter of the small circular hole 53 is the same as that of the upper circular hole 21 of the rocker arm 2; the center distance between the center circular hole 51 of the positioning card 5 and the small circular hole 53 above the positioning card 5 is the same as the center distance between the circular ring 22 of the rocker arm 2 and the upper circular hole 21 of the circular ring 22; the upper end surface of the positioning card 5 is a plane 54, the plane 54 is perpendicular to the center line of the center circular hole 51 and the small circular hole 53, and the plane 54 is extended to the left to form an arrow-shaped plate 55;

[0008] The positioning pin 6 is a stepped pin, the diameter of the large end 62 of the positioning pin is larger than that of the small end 61 of the positioning pin, the diameter of the small end 61 of the positioning pin is matched with that of the small circular hole 53 of the upper end of the positioning card 5, the length of the small end 61 of the positioning pin is 5-10 mm larger than the sum of the thicknesses of the rocker arm 2 and the positioning card 5, and the end surface of the small end 61 of the positioning pin is chamfered;

[0009] The opening copper sleeve 8 is in a cylindrical shape, one end of the opening copper sleeve 8 is turned up, the plane on one side of the turned-up end is perpendicular to the center line of the opening copper sleeve 8, and the outer wall of the opening copper sleeve 8 is single-sidedly and downwardly through the opening through slot 81 along the axial direction; the inner diameter of the opening copper sleeve 8 is matched with the outer diameter of the first step of the stepped shaft 11 of the gas vane 1, the wall thickness of the opening copper sleeve 8 is 2-3 mm, and the opening copper sleeve 8 is used for protecting the stepped shaft 11 of the gas vane 1;

[0010] In use, the stepped shaft 11 of the gas vane 1 is sequentially inserted into the center circular hole 51 of the positioning card 5, the inner hole of the circular ring 22 of the rocker arm 2 and the opening copper sleeve 8, wherein the positioning card 5 is arranged on the third step 113 of the stepped shaft 11, the circular ring 22 of the rocker arm 2 is arranged on the second step 112 of the stepped shaft 11, and the opening copper sleeve 8 is arranged on the first step 111 of the stepped shaft 11, then the first step 111 of the stepped shaft 11 is inserted into the inner hole of the three-jaw of the indexing head, the positioning pin 6 is sequentially inserted into the upper circular hole 21 of the rocker arm 2 and the small circular hole 53 above the positioning card 5, and the rocker arm 2 and the positioning card 5 are fixedly connected together; the vane tip of the gas vane is outward, the height gauge is used to find that the center plane 13 of the vane surface 12 where the stepped shaft of the gas vane 1 is located is parallel to the working table 10 of the vertical drilling machine, the components are tightly pressed after being closely attached, and then the three-jaw of the indexing head is screwed; after the arrow-shaped plate 55 at the upper part of the positioning card 5 is adjusted to be consistent with the direction of the vane tip of the gas vane, the fastening screw 7 is preliminarily screwed, the height gauge is used to find that the plane 54 at the upper part of the positioning card 5 is parallel to the working table of the vertical drilling machine, and then the fastening screw 7 is screwed; at this time, the relative position between the rocker arm 2 and the gas vane 1 is correct.

[0011] The diameter of the center hole 51 of the positioning card 5 is 0.02-0.04mm larger than the outer diameter of the third step 113 of the step shaft 11 of the gas vane 1.

[0012] The boss 52 of the positioning card 5 extends to the right side of the center hole 51, and the length is 40-60mm.

[0013] The width of the through slot 521 of the boss 52 of the positioning card 5 is 3-5mm.

[0014] The width of the through slot 81 is 3-5mm.

[0015] The fastening screw 7 is a common hexagonal screw, the specification matches the threaded hole 522 on the upper part of the boss 52 of the positioning card 5, and the length is 3-5mm larger than the thickness of the boss 52 of the positioning card 5.

[0016] The method for assembling the diagonal taper hole matching assembly by using the diagonal taper hole matching assembly assembling tool comprises the following steps:

[0017] Step one, install the fixed indexing head on the vertical drilling machine workbench, and ensure that the center line of the clamping hole of the indexing head is perpendicular to the main shaft of the machine tool and parallel to the X-axis of the machine tool;

[0018] Step two, sequentially pass the step shaft 11 of the gas vane 1 through the center hole 51 of the positioning card 5, the inner hole of the circular ring 22 of the rocker arm 2, and the open copper sleeve 8, wherein the positioning card 5 is on the third step 113 of the step shaft 11, the circular ring 22 of the rocker arm 2 is on the second step 112 of the step shaft 11, and the open copper sleeve 8 is on the first step 111 of the step shaft 11, then the first step 111 of the step shaft 11 is inserted into the inner hole of the three-jaw indexing head, the positioning pin 6 is sequentially passed through the upper hole 21 of the rocker arm 2 and the small circular through hole 53 of the positioning card 5, and the rocker arm 2 and the positioning card 5 are fixedly connected together; the vane tip of the gas vane 1 faces outward, the height gauge is used to find that the center plane 13 of the vane surface 12 where the step shaft 11 of the gas vane 1 is located is parallel to the vertical drilling machine workbench 10, and the three-jaw indexing head is tightened after the components are tightly pressed and closely contacted;

[0019] Step three, after adjusting the arrow-shaped plate 55 on the upper part of the positioning card 5 to be roughly consistent with the direction of the vane tip of the gas vane, preliminarily tighten the fastening screw 7, use the height gauge to align the plane 54 on the upper part of the positioning card 5 to be parallel to the vertical drilling machine workbench, and then tighten the fastening screw 7;

[0020] Step four, rotate the index head to make the theoretical axis of the rocker arm taper hole 23 perpendicular to the vertical drilling machine workbench 10, move the vertical drilling machine X axis, align the center of the pre-hole of the rocker arm taper hole 23 on the rocker arm 2 with the spindle of the machine tool, first use a hard alloy drill bit to drill through to remove most of the original material, then use a hard alloy taper reamer with the same taper as the rocker arm taper hole 23 to ream the hole, and during the processing, use the screw tail taper pin 3 for trial assembly, and ensure that the length of the screw tail taper pin 3 protruding from the rocker arm 2 meets the use requirements;

[0021] Step five, loosen the fastening screw 7, remove the gas rudder 1 and the rocker arm 2, put the annular ring 22 of the rocker arm 2 on the second step 112 of the rudder surface step shaft 11 and opposite to the rocker arm taper hole 23, insert the screw tail taper pin 3, screw the threaded end of the screw tail taper pin 3 exposed from the rocker arm 2 with the nut 4, and after tightening the nut 4, the assembly of the entire angle taper hole matching assembly is completed.

[0022] Wherein the center plane 13 of the rudder surface 12 where the step shaft is located is the plane where the center symmetry line of the rudder surface 12 where the step shaft is located and the axis line of the step shaft 11 are located.

[0023] The beneficial effects of the present application are: the step shaft taper hole 1121 and the rocker arm taper hole 23 are machined by one-time clamping, which ensures that the taper holes of the two are tightly matched with the screw tail taper pin, and the assembly efficiency is improved by 100%; and the relative position angle of the rocker arm taper hole 23 and the gas rudder can ensure that the designed angle is reached. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 , is a schematic view of the gas rudder 1;

[0025] Figure 2 , is a schematic view of the rocker arm 2;

[0026] Figure 3 , is a schematic view of the angle taper hole matching assembly;

[0027] Figure 4 , is a schematic view of the angle taper hole matching assembly;

[0028] Figure 5 , is a schematic view of the angle taper hole matching assembly;

[0029] Figure 6 , is a schematic view of the angle taper hole matching assembly;

[0030] Figure 7 , is a schematic view of the angle taper hole matching assembly;

[0031] Figure 8 , is a schematic view of the angle taper hole matching assembly;

[0032] Figure 9 , is a schematic view of the angle taper hole matching assembly;

[0033] Figure 10 Fig. 1 is a schematic diagram of the open copper sleeve 8 structure of the present application.

[0034] Wherein, 1 is a gas rudder, 2 is a rocker arm, 3 is a screw tail cone pin, 4 is a nut, 5 is a positioning card, 6 is a positioning pin, 7 is a fastening screw, 8 is an open copper sleeve, 10 is a vertical drilling machine workbench, 11 is a stepped shaft, 12 is a rudder surface where the stepped shaft is located, 13 is a central plane, 21 is an upper circular hole, 22 is a circular ring, 23 is a rocker arm conical hole, 51 is a central circular hole, 52 is a boss, 53 is a small circular through hole, 54 is a plane, 55 is an arrow-shaped plate, 61 is a small end of the positioning pin, 62 is a large end of the positioning pin, 81 is an open through slot, 521 is a through slot, 522 is a threaded hole, 111 is a first step, 112 is a second step, 113 is a third step, and 1121 is a conical hole of the stepped shaft. DETAILED DESCRIPTION

[0035] The present application provides an angular taper hole matching assembly assembling tool, characterized by comprising a positioning card 5, a positioning pin 6, a fastening screw 7 and an open copper sleeve 8,

[0036] The positioning card 5 is a sheet structure, and the lower part has a central circular hole 51 with a diameter of 0.02-0.04 mm larger than the outer diameter of the third step of the stepped shaft 11 of the gas rudder 1 (the minimum outer diameter section of the stepped shaft 11 of the rudder surface is the first step), the right side of the hole extends a boss 52 of 40-60 mm, the central position of the boss 52 is provided with a through slot 521 with a width of 3-5 mm, the through slot 521 penetrates through one side of the circumference; the top side of the boss 52 has a threaded hole 522 of M5-M8, and the lower side has a via hole 523 corresponding to the threaded hole 522, and the fastening screw is matched with the threaded hole 522 through the via hole 523 to tighten the central circular hole 51 of the positioning card 5; the central circular hole 51 of the positioning card 5 has a small circular through hole 53 above it, and the hole diameter is the same as the upper circular hole 21 of the rocker arm 2; the center distance between the central circular hole 51 of the positioning card 5 and the small circular through hole 53 above it is the same as the center distance between the circular ring 22 of the rocker arm 2 and the upper circular hole 21 above it; the upper end face of the positioning card 5 is a plane 54, the central line of the central circular hole 51 and the small circular through hole 53 above it is perpendicular to the plane 54, and the left side of the plane 54 is arrow-shaped 55.

[0037] The positioning pin 6 is a stepped pin, the small end 61 of the positioning pin is matched with the upper circular hole 21 of the rocker arm 2 and the small circular through hole 53 of the positioning card 5, the length is 5-10 mm larger than the sum of the thicknesses of the rocker arm 2 and the positioning card 5, and the small end face of the positioning pin 6 is chamfered.

[0038] The fastening screw 7 is a common hexagonal screw, the specification is matched with the threaded hole on the upper part of the boss of the positioning card 5, and the length is 3-5 mm larger than the thickness of the positioning card.

[0039] The opening copper sleeve 8 is cylindrical, one end is turned up, the plane on one side of the turned-up end is perpendicular to the center line of the opening copper sleeve 8, and a wide opening slot with a width of 3-5 mm is opened on one side along the axial direction and penetrates the upper and lower openings; the inner diameter of the opening copper sleeve matches the outer diameter of the first step of the rudder surface step shaft, and the wall thickness is 2-3 mm, which is used to protect the step shaft of the rudder surface.

[0040] The fastening screw 7 passes through the through hole 523 of the positioning card 5 and cooperates with the threaded hole 522, which is used to tighten the center hole 51 of the positioning card; the positioning pin 6 is inserted into the small circular hole 53 on the upper part of the positioning card 5, which is used to position the rocker arm 2; the turned-up end of the opening copper sleeve 8 is inserted into the inner hole of the three-jaw indexing head, which is used to protect the step shaft 11 of the gas rudder 1 from being damaged by the indexing head.

[0041] The specific implementation technical solution is as follows:

[0042] First step: install and fix the indexing head on the vertical drilling machine workbench, ensure that the center line of the clamping hole of the indexing head is perpendicular to the machine tool spindle and parallel to the machine tool X axis;

[0043] Second step: insert the step shaft 11 of the gas rudder 1 into the inner hole of the three-jaw indexing head in sequence through the center hole of the positioning card 1, the inner hole of the circular ring 22 of the rocker arm 2 and the opening copper sleeve 8, and insert the positioning pin 6 into the small circular hole 53 on the upper part of the positioning card 5 in sequence through the upper circular hole 21 of the rocker arm 2 and the small circular hole 53 on the upper part of the positioning card 5, so as to fix and connect the rocker arm 2 and the positioning card 5 together; the rudder tip of the gas rudder 1 faces outward, the height gauge is used to find the center plane 13 of the rudder surface 12 where the step shaft is located, and the vertical drilling machine workbench 10 is parallel, the components are tightly pressed after being tightly pressed, and then the three-jaw indexing head is tightened;

[0044] Third step: after adjusting the arrow on the upper part of the positioning card 5 to be consistent with the direction of the rudder tip of the rudder surface, preliminarily tighten the fastening screw 7, use the height gauge to find that the plane 54 on the upper part of the positioning card 5 is parallel to the vertical drilling machine workbench 10, and then tighten the fastening screw 7.

[0045] Fourth step: rotate the angle head to make the theoretical axis of the angle rocker arm conical hole 23 perpendicular to the vertical drilling machine workbench 10, move the X axis of the vertical drilling machine, find that the center of the pre-hole of the rocker arm conical hole 23 is coaxial with the machine tool spindle, first use a hard alloy drill bit to drill through to remove most of the raw materials, then use a hard alloy taper reamer with the same taper as the rocker arm conical hole 23 to ream the hole, and during the processing, the screw tail taper pin 3 is used for trial assembly, and the length of the screw tail taper pin 3 protruding from the rocker arm is ensured to meet the use requirement.

[0046] Fifth step: loosen the fastening screw 7, remove the gas rudder 1 and the rocker arm 2, the circular ring 22 of the rocker arm is sleeved on the step shaft 11 of the gas rudder 1, the conical holes are opposite, the screw tail taper pin 3 is inserted, the threaded end of the screw tail taper pin 3 protruding from the rocker arm is screwed with the nut 4, and after the nut 4 is tightened, the assembly of the entire angle conical hole is completed.

[0047] The preferred examples of the present application are described in detail below with reference to the accompanying drawings:

[0048] Figures 3-4 The installation is completed, and the threaded end of the screw tail cone pin 3 is screwed with the nut 4 after passing through the stepped shaft 11 and the rocker arm cone hole 23.

[0049] Figure 5 The tool of the present application is shown, which involves the tool including: positioning card 5, positioning pin 6, fastening screw 7, open copper sleeve 8.

[0050] The positioning card 5 is a sheet structure, and the lower part has a center circular hole 51 with a diameter of 0.03 mm larger than the third step outer diameter of the stepped shaft 11 of the gas rudder 1 (the smallest outer diameter section of the rudder surface stepped shaft is the first step), the right side of the hole extends a 50 mm boss 52, a width of 4 mm through slot 521 is opened in the center position of the boss 52, and the through slot 521 penetrates through one side of the circumference; the top of the boss 52 has an M8 threaded hole 522 on the upper side, and the lower side has a through hole 523 corresponding to the threaded hole 522, and the fastening screw 7 is matched with the threaded hole 522 through the through hole to tighten the center circular hole 51 of the positioning card; a small circular hole 53 is arranged above the center circular hole 51 of the positioning card 5, and the hole diameter is the same as the upper circular hole 21 of the rocker arm 2; the center distance between the center circular hole 51 of the positioning card 5 and the small circular hole 53 above it is the same as the center distance between the upper circular ring of the rocker arm 2 and the circular hole 21 above it; the upper end surface of the positioning card 5 is a plane 54, the center line of the plane 54 is perpendicular to the center line of the center circular hole 51 and the small circular hole 53 above it, and the left side of the plane 54 is an arrow-shaped surface 55.

[0051] The positioning pin 6 is a stepped column pin, the small end diameter matches the small circular hole 53 above the positioning card 5, the length is 6 mm larger than the sum of the thickness of the rocker arm 2 and the positioning card 5, and the small end 61 of the positioning pin is chamfered; the fastening screw 7 is a common hexagonal screw, the specification matches the threaded hole 221 on the upper part of the boss 22 of the positioning card, and the length is 4 mm larger than the thickness of the positioning card 5; the open copper sleeve 8 is in a cylindrical shape, one end is flanged, the plane on one side of the flange is perpendicular to the center line of the open copper sleeve 8, and the open through slot 81 with a width of 3 mm and penetrating up and down is opened on one side along the axis direction, the inner diameter matches the first step 111 outer diameter of the stepped shaft 11 of the gas rudder 1, and the wall thickness is 2-3 mm, which is used to protect the stepped shaft 11.

[0052] As shown in Figure 6 The fastening screw 7 is matched with the threaded hole 221 through the through hole 223 of the positioning card 5 to tighten the center circular hole 51 of the positioning card 5; the positioning pin 6 is inserted into the small circular hole 53 above the positioning card 5 to position the rocker arm 2; the flange side of the open copper sleeve 8 is inserted into the inner hole of the three-jaw dividing head to protect the stepped shaft 11 from being damaged by the dividing head.

[0053] Install the fixed index head on the workbench of the vertical drilling machine, ensure that the center line of the clamping hole of the index head is perpendicular to the main shaft of the machine tool and parallel to the X-axis of the machine tool;

[0054] As shown in Figure 6 , the stepped shaft 11 is inserted into the inner hole of the three-jaw index head in sequence through the center hole 51 of the positioning card 5, the inner hole of the circular ring 22 of the rocker arm 2, and the open copper sleeve 8, and the positioning pin 6 is inserted in sequence through the upper circular hole 21 of the rocker arm 2 and the small circular hole 53 of the positioning card 5; the rudder tip of the gas rudder 1 faces outward, and the center plane 13 of the rudder surface 12 where the stepped shaft is located is marked in parallel with the workbench 10 of the vertical drilling machine using a height gauge, and the three-jaw index head is tightened after the components are tightly pressed; after adjusting the arrow on the upper part of the positioning card 5 to be roughly consistent with the direction of the rudder tip of the rudder surface, the fastening screw 7 is preliminarily tightened, the plane 54 on the upper part of the positioning card 5 is found to be parallel to the workbench 10 of the vertical drilling machine using a height gauge, and then the fastening screw 7 is tightened;

[0055] As shown in Figure 7 , rotate the angle head so that the angular taper hole theoretical axis is perpendicular to the workbench of the vertical drilling machine, move the X-axis of the vertical drilling machine, and find the center of the pre-hole of the rocker taper hole 23 on the rocker arm to be coaxial with the main shaft of the machine tool, first use a hard alloy drill bit to drill through to remove most of the original material, then use a hard alloy taper reamer with the same taper 3 as the taper hole to ream the hole, and use the screw tail taper pin 3 for trial assembly during the machining process to ensure that the length of the screw tail taper pin 3 protruding from the rocker arm meets the use requirements; loosen the fastening screw 7, remove the gas rudder 1 and the rocker arm 2, and insert the screw tail taper pin 3 into the trial assembly, then screw the threaded end of the screw tail taper pin 3 exposed from the rocker arm 2 with the nut 4, and tighten the nut 4 to complete the assembly of the entire angular taper hole assembly.

Claims

1. An assembly fixture for an angular tapered hole fitting component, characterized in that, It includes a positioning clip (5), a positioning pin (6), a fastening screw (7), and an open copper sleeve (8). The positioning card (5) is a sheet-like structure with a central circular hole (51) at its lower part that is slightly larger than the outer diameter of the third step (113) of the stepped shaft (11) of the gas rudder (1). A boss (52) extends from the right side of the central circular hole (51), and a through groove (521) is opened at the center of the boss (52). The through groove (521) passes through one side of the circumference and communicates with the central circular hole (51). The boss (52) has a through threaded hole (522), which passes laterally through the through groove (521). The fastening screw (7) engages with the threaded hole (522) through the through hole to tighten the central circular hole of the positioning card (5). 51); There is a small circular through hole (53) directly above the central circular hole (51) of the positioning card (5). The diameter of the small circular through hole (53) is the same as that of the circular hole (21) above the rocker arm (2). The center distance between the central circular hole (51) of the positioning card (5) and the small circular through hole (53) above it is the same as the center distance between the ring (22) on the rocker arm (2) and the circular hole (21) above it. The upper surface of the positioning card (5) is a plane (54). The plane (54) is perpendicular to the line connecting the center of the central circular hole (51) and the center of the small circular through hole (53). The left side of the plane (54) extends to the left in the shape of an arrow plate (55). The positioning pin (6) is a stepped pin. The diameter of the large end (62) of the positioning pin is larger than the diameter of the small end (61) of the positioning pin. The diameter of the small end (61) of the positioning pin matches the small circular through hole (53) at the upper end of the positioning card (5). The length of the small end (61) of the positioning pin is 5-10 mm larger than the sum of the thicknesses of the rocker arm (2) and the positioning card (5). The end face of the small end (61) of the positioning pin is chamfered. The open copper sleeve (8) is cylindrical with a flange at one end. The plane of the flanged side is perpendicular to the center line of the open copper sleeve (8). The outer wall of the open copper sleeve (8) has an open through groove (81) running through the upper and lower sides along the axial direction on one side. The inner diameter of the open copper sleeve (8) matches the outer diameter of the first step (111) of the stepped shaft (11) of the gas rudder (1). The wall thickness of the open copper sleeve (8) is 2-3 mm. The open copper sleeve (8) is used to protect the stepped shaft (11) of the gas rudder (1). In use, the stepped shaft (11) of the gas rudder (1) is passed sequentially through the central circular hole (51) of the positioning card (5), the inner hole of the ring (22) of the rocker arm (2), and the open copper sleeve (8). The positioning card (5) is on the third step (113) of the stepped shaft (11), the ring (22) of the rocker arm (2) is on the second step (112) of the stepped shaft (11), and the open copper sleeve (8) is on the first step (111) of the stepped shaft (11). Then, the first step (111) of the stepped shaft (11) is inserted into the inner hole of the three jaws of the indexing head. The positioning pin (6) is passed sequentially through the circular hole (21) above the rocker arm (2) and the small circular tube above the positioning card (5). Hole (53) to fix the rocker arm (2) and positioning card (5) together; the tip of the gas rudder faces outward, use a height gauge to find that the center plane (13) of the rudder surface (12) where the step shaft of the gas rudder (1) is located is parallel to the worktable (10) of the vertical drilling machine, press all components tightly and tighten the three jaws of the indexing head; adjust the arrow-shaped plate (55) on the upper part of the positioning card (5) to be consistent with the direction of the tip of the gas rudder and then initially tighten the fastening screw (7), use a height gauge to find that the plane (54) on the upper part of the positioning card (5) is parallel to the worktable of the vertical drilling machine, and then tighten the fastening screw (7); at this time, the relative position of the rocker arm (2) and the gas rudder (1) is correct.

2. The assembly fixture for an angular tapered hole fitting assembly according to claim 1, characterized in that, The diameter of the central hole (51) at the bottom of the positioning card (5) is 0.02 to 0.04 mm larger than the outer diameter of the third step (113) of the stepped shaft (11) of the gas rudder (1).

3. The assembly fixture for an angular tapered hole fitting assembly according to claim 1 or 2, characterized in that, The protrusion (52) extending from the right side of the central circular hole (51) of the positioning card (5) is 40-60mm long.

4. The assembly fixture for an angular tapered hole fitting component according to claim 3, characterized in that, The width of the through groove (521) at the center of the boss (52) of the positioning card (5) is 3-5mm.

5. The assembly fixture for an angular tapered hole fitting assembly according to claim 1 or 2, characterized in that, The width of the open through groove (81) is 3-5 mm.

6. The assembly fixture for an angular tapered hole fitting assembly according to claim 1, characterized in that, The fastening screw (7) is a common hexagonal screw, the specifications of which match the threaded hole (522) on the upper part of the protruding boss (52) of the positioning card (5), and the length is 3-5mm longer than the thickness of the protruding boss (52) of the positioning card (5).

7. A method for assembling diagonal tapered hole fitting components using the assembly fixture of claim 1, comprising the following steps: Step 1: Install and fix the indexing head on the worktable of the vertical drilling machine, ensuring that the center line of the clamping hole of the indexing head is perpendicular to the machine spindle and parallel to the X-axis of the machine. Step 2: Pass the stepped shaft (11) of the gas rudder (1) through the central hole (51) of the positioning card (5), the inner hole of the ring (22) of the rocker arm (2), and the open copper sleeve (8) in sequence. The positioning card (5) is on the third step (113) of the stepped shaft (11), the ring (22) of the rocker arm (2) is on the second step (112) of the stepped shaft (11), the open copper sleeve (8) is on the first step (111) of the stepped shaft (11), and then the first step (111) of the stepped shaft (11) is inserted into the inner hole of the three jaws of the indexing head. The positioning pin (6) passes through the round hole (21) above the rocker arm (2) and the small round through hole (53) above the positioning card (5) in sequence, and fixes the rocker arm (2) and the positioning card (5) together. The tip of the gas rudder (1) faces outward. The height gauge is used to find that the center plane (13) of the rudder surface (12) where the stepped shaft (11) of the gas rudder (1) is located is parallel to the worktable (10) of the vertical drilling machine. After pressing the components tightly together, the three jaws of the indexing head are tightened. Step 3: After adjusting the arrow-shaped plate (55) on the upper part of the positioning card (5) to be roughly aligned with the tip of the gas rudder, tighten the fastening screw (7) initially. Use a height gauge to align the plane (54) on the upper part of the positioning card (5) with the worktable of the vertical drilling machine, and then tighten the fastening screw (7). Step 4: Rotate the indexing head to make the theoretical axis of the rocker arm tapered hole (23) perpendicular to the worktable (10) of the vertical drilling machine. Move the X-axis of the vertical drilling machine to align the pre-hole center of the rocker arm tapered hole (23) on the rocker arm (2) with the machine tool spindle. First, use a carbide drill bit to drill through and remove most of the raw material. Then, use a carbide tapered reamer with the same taper as the rocker arm tapered hole (23) to ream the hole. During the processing, use a threaded taper pin (3) for trial assembly to ensure that the length of the threaded taper pin (3) extending out of the rocker arm (2) meets the usage requirements. Step 5: Loosen the fastening screw (7), remove the gas rudder (1) and rocker arm (2), put the ring (22) of the rocker arm (2) on the second step (112) of the rudder surface step shaft (11) and align it with the rocker arm tapered hole (23), insert the threaded taper pin (3), the threaded end of the threaded taper pin (3) protrudes from the rocker arm (2) and is screwed into the nut (4), tighten the nut (4) and complete the assembly of the entire angle taper hole fitting assembly.

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