Device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle

Abstract

A device for removing the intersecting edges of the internal cross-holes of a three-way oil nozzle comprises a workpiece clamping and positioning mechanism, a tool assembly, and a tool cutting path guide mechanism. The workpiece clamping and positioning mechanism clamps and secures the three-way oil nozzle workpiece. The upper end of the tool assembly is fitted with the tool cutting path guide mechanism, and the lower end extends into the workpiece, whereupon the intersecting edges of the workpiece are removed under the guidance of the tool cutting path guide mechanism. By coordinating the workpiece clamping and positioning mechanism, the tool assembly, the tool cutting path guide mechanism, and the tool axial movement distance measurement mechanism, the present invention achieves non-destructive removal of the intersecting edges of the internal cross-holes of a three-way oil nozzle, achieving a smooth transition of the intersecting edges and meeting the precision requirements of the transition arc surface.

Description

Technical Field

[0001] The invention relates to an edge cutting device, in particular to a device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle. Background Art

[0002] The three-way oil nozzle is an indispensable part in the hydraulic oil circuit of the aircraft. There are multiple three-way oil nozzles in the hydraulic control oil circuit of the entire aircraft. Figure 1 A three-way nozzle 1, shown as a device for use in an aircraft hydraulic oil circuit, has a sharp intersecting edge 1-3 formed at the intersection of its internal horizontal hole 1-1 and vertical hole 1-2. During assembly, the rubber seal within the three-way nozzle 1 is often scratched by this intersecting edge 1-3, and detached rubber debris contaminates the oil system, posing a safety hazard to aircraft flight. To address this issue, the intersecting edge 1-3 of the cross-holes within the three-way nozzle 1 needs to be processed to achieve a smooth transition, ensuring that the transition arc surface meets the precision requirements of an R of 0.1-0.3 mm and a roughness of Ra of 0.8.

[0003] Currently, for Figure 1 The illustrated method for treating the intersecting edges 1-3 of the internal cross-holes of the three-way nozzle 1 is to trim and polish them using a scraper, power tool, or CNC machining equipment. However, scraping and power tool treatments are inefficient, making it difficult to ensure consistent product quality, and can easily cause scratches on other surfaces of the internal cross-holes during processing. Using CNC machining equipment to treat the intersecting edges, however, fails to accurately plan the cutting path at the intersection, making it difficult to meet machining precision requirements. Summary of the Invention

[0004] The present invention provides a device for cutting the edges of the intersecting lines of the internal cross holes of a three-way oil nozzle, which is intended to achieve the cutting process of the edges of the intersecting lines of the internal cross holes of the three-way oil nozzle through the cooperation of the workpiece clamping and positioning mechanism, the tool assembly, the tool cutting trajectory guide mechanism and the tool axial movement distance measuring mechanism, so as to achieve the purpose of making the edges of the intersecting lines transition smoothly and meeting the requirements for the accuracy of the transition arc surface.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The guide rail is provided with a tool holder, and the guide rail is provided with a tool holder, and the tool holder is provided with a tool holder for guiding the tool holder towards the workpiece.

[0007] The above-mentioned device for cutting the edge of the intersecting line of the internal cross hole of the three-way oil nozzle, the workpiece clamping and positioning mechanism includes a positioning sleeve, a lower fixing seat, a locking sleeve and a top screw; the positioning sleeve is installed above the workpiece and is connected to the upper part of the workpiece through a threaded connection structure, the upper part of the positioning sleeve is a cylindrical sleeve, and the lower part is a square sleeve; the lower fixing seat is provided with a variable-section inner hole that passes through from top to bottom, and is sleeved on the outside of the workpiece and the positioning sleeve, and the matching part with the positioning sleeve is a square hole structure, the upper end of the lower fixing seat is fixedly assembled with the upper fixing seat in the tool cutting trajectory guide mechanism through a threaded connection structure, and the lower end is fixedly assembled with the locking sleeve through a threaded connection structure; the locking sleeve is disc-shaped, and a top screw is equipped on its bottom surface, and the workpiece is clamped and fixed by the top screw and the positioning sleeve.

[0008] The above-mentioned device for cutting the edge of the intersection line of the internal cross hole of the three-way oil nozzle, the tool assembly is provided with a rotating sleeve, a fixed rod and a countersink; the upper end of the rotating sleeve is a disc structure, which is placed in the variable cross-section inner hole of the upper fixed seat, and a rectangular window is provided in the upper fixed seat and its corresponding part along the radial direction. The lower end of the rotating sleeve is a spherical surface, and the countersink is installed in the rotating sleeve; the countersink is a long rod, the upper end of which is hingedly assembled on the side wall of the rotating sleeve through a first pin shaft. The lower end of the countersinking cutter is provided with an arc-shaped groove cutting edge, and the arc-shaped groove cutting edge is consistent with the shape of the arc surface formed after the edge of the intersection line of the workpiece is cut off; the upper end of the fixing rod is provided with a contour pin assembly hole that cooperates with the contour pin in the tool cutting trajectory guide mechanism, and the contour pin is installed in the contour pin assembly hole in an interference fit manner. The lower part of the fixing rod is inserted into the inner hole of the rotating sleeve, and has a semi-cylindrical structure. It is located on the back of the countersinking cutter, and provides support force for the countersinking cutter through the fixing rod.

[0009] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle is also provided with a feed amount control mechanism; the feed amount control mechanism includes a feed hook, a countersink reset spring wire and a feed hook reset spring wire, and matched therewith, a feed hook assembly groove, a second hinge shaft assembly hole, and a feed hook reset spring wire mounting hole are provided on the side wall of the lower fixed seat, and a countersink reset spring wire mounting hole is provided on the side wall of the rotating sleeve; the feed hook is composed of a vertical arm and a hook part, and the upper end of the vertical arm is hingedly assembled with the lower fixed seat through a second pin shaft, The hook portion penetrates into the horizontal hole of the three-way oil nozzle workpiece, and the upper surface of the hook portion is a wedge-shaped surface. When the feed hook swings in the direction of entering the horizontal hole of the workpiece, the wedge-shaped surface cooperates with the spherical surface of the lower end of the rotating sleeve to push the rotating sleeve and the countersinking cutter to move upward; the upper end of the countersinking cutter reset spring wire is installed in the countersinking cutter reset spring wire mounting hole on the side wall of the rotating sleeve, and the lower end is in conflict with the countersinking cutter rod; the upper end of the feed hook reset spring wire is installed in the feed hook reset spring wire mounting hole on the side wall of the lower fixed seat, and the lower end is in conflict with the feed hook vertical arm.

[0010] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle is also provided with a tool axial movement distance measuring mechanism, and the tool axial movement distance measuring mechanism includes a dial indicator, a clamping sleeve and a screw sleeve; the measuring rod of the dial indicator contacts the upper end of the tool assembly, and the dial indicator is clamped and fixed by the cooperation of the clamping sleeve, the screw sleeve and the upper fixing seat.

[0011] The above-mentioned device for cutting the edge of the intersection line of the internal cross hole of the three-way oil nozzle is a tapered sleeve structure, which is installed in the tapered hole of the variable-section inner hole of the upper seat of the tool cutting trajectory guide mechanism. Several groups of radial grooves are provided on the side wall of the clamping sleeve, one group of which is connected to the inner hole of the clamping sleeve; the screw sleeve is sleeved on the outside of the tapered hole of the upper seat by a threaded connection.

[0012] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle is also provided with a tool cutting trajectory guide mechanism zero adjustment component; the tool cutting trajectory guide mechanism zero adjustment component includes a scale sleeve and a positioning pin; the scale sleeve is a tapered sleeve, which is sleeved on the outside of the upper fixed seat and assembled with the upper fixed seat through a threaded connection structure, and a threaded screw-in angle scale is provided on its tapered outer wall, and an annular groove is provided on the inner side wall of the scale sleeve, and a radially opposite positioning pin assembly hole is provided on the side wall of the annular groove, which is matched with an axial long hole corresponding to the position of the positioning pin hole assembly hole on the inner wall of the square hole of the upper fixed seat, a pin hole is provided at the corresponding position of the side wall of the profiling part, and an axial length scale corresponding to the threaded screw-in angle scale is provided on the outer wall of the upper fixed seat; two groups of positioning pins are provided, which are respectively inserted into the axial long hole of the upper fixed seat from the two ends of the positioning pin assembly hole on the side wall of the annular groove of the scale sleeve.

[0013] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle is further provided with a compression spring between the rotating sleeve of the tool assembly and the positioning sleeve of the workpiece clamping and positioning mechanism.

[0014] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle is provided with a positioning element at the threaded connection part of the upper fixing seat and the lower fixing seat. The positioning element is a positioning screw or a positioning pin.

[0015] The above-mentioned device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle has coarse straight anti-skid patterns on the outer walls of the screw sleeve and the upper end disc of the rotating sleeve; and the outer wall of the matching part of the upper fixing seat and the rotating sleeve is provided with a mesh-like anti-skid pattern.

[0016] The present invention provides a device for removing the edges of the intersecting lines of the internal cross holes of a three-way oil nozzle. The device clamps the three-way oil nozzle workpiece using a workpiece clamping and positioning mechanism. The operator then manually rotates a rotating sleeve, and under the guidance of a tool cutting trajectory guide mechanism, the countersinking cutting edge in the tool assembly moves along the intersecting line trajectory of the workpiece to remove the edges. To ensure a smooth transition of the intersecting line edges and meet the precision requirements of the transition arc surface, a feed control mechanism cooperates with a tool axial movement distance measurement mechanism during the intersecting line edge removal process. The intersecting line edge removal is gradually completed through repeated feed and removal operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the edge structure of the intersection line of the three-way oil nozzle and its internal cross hole;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 Schematic diagram of the clamping sleeve structure;

[0020] Figure 4 yes Figure 3 Bottom view of

[0021] Figure 5 This is a schematic diagram of the matching structure between the upper fixing seat and the scale sleeve;

[0022] Figure 6 yes Figure 5 Schematic diagram of the AA section structure;

[0023] Figure 7 yes Figure 5 Schematic diagram of the BB cross-section structure;

[0024] Figure 8 yes Figure 7 Schematic diagram of the CC cross-section structure;

[0025] Figure 9 Schematic diagram of the cross-sectional structure of the profiling part;

[0026] Figure 10 yes Figure 9 Schematic diagram of the DD cross-section structure;

[0027] Figure 11 yes Figure 9 A top view of

[0028] Figure 12 Schematic diagram of the cross-sectional structure of the tool assembly;

[0029] Figure 13 1. It is a schematic diagram of the cross-sectional structure of the positioning sleeve;

[0030] Figure 14 yes Figure 13 A top view of

[0031] Figure 15 1 is a schematic diagram of the cross-sectional structure of the lower fixed seat;

[0032] Figure 16 yes Figure 15 Schematic diagram of the EE cross-section structure.

[0033] Explanation of the numbers in the figure:

[0034] 1 is a three-way oil nozzle, 1-1 is a horizontal hole, 1-2 is a vertical hole, and 1-3 is an intersection line edge;

[0035] 2 is a clamping sleeve, 2-1 is a radial slot;

[0036] 3 is the upper fixing seat, 3-1 is the rectangular window, 3-2 is the tapered hole, 3-3 is the square hole, and 3-4 is the axial long hole;

[0037] 4 is a contour pin;

[0038] 5 is a profiled part, 5-1 is a pin hole, and 5-2 is a semicircular annular convex edge;

[0039] 6 is a rotating sleeve;

[0040] 7 is the first pin;

[0041] 8 is a compression spring;

[0042] 9 is the second pin;

[0043] 10 is a positioning sleeve, and 10-1 is an internal thread that cooperates with the workpiece;

[0044] 11 is a countersink, 11-1 is an arc-shaped groove cutting edge;

[0045] 12 is the countersink reset spring wire;

[0046] 13 is the feed hook reset spring wire;

[0047] 14 is an inserting rod;

[0048] 15 is the lower fixing seat, 15-1 is the feed hook assembly slot, 15-2 is the second pin assembly hole, and 15-3 is the feed hook return spring assembly hole;

[0049] 16 is a feed hook;

[0050] 17 is a locking sleeve;

[0051] 18 is a top screw;

[0052] 19 is a positioning element;

[0053] 20 is a scale sleeve, 20-1 is an annular groove, and 20-2 is a positioning pin assembly hole;

[0054] 21 is a positioning pin;

[0055] 22 is a screw sleeve;

[0056] 23 is a dial indicator. DETAILED DESCRIPTION

[0057] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] See Figure 1. Figure 2 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 The present invention provides a device for cutting the edge of the intersection line of the internal cross hole of a three-way oil nozzle, which is provided with a workpiece clamping and positioning mechanism, a tool assembly and a tool cutting trajectory guide mechanism; the workpiece clamping and positioning mechanism includes a positioning sleeve 10, a lower fixing seat 15, a locking sleeve 17 and a top screw 18, the positioning sleeve 10 is installed above the workpiece and is connected to the upper part of the workpiece through a threaded connection structure, the upper part of the positioning sleeve 10 is a cylindrical sleeve and the lower part is a square sleeve, the lower fixing seat 15 is provided with a variable cross-section inner hole that passes through from top to bottom, and is sleeved on the outside of the workpiece and the positioning sleeve 10, and is connected to the positioning sleeve The mating part of 10 is a square hole structure. The upper end of the lower fixed seat 15 is fixedly assembled with the components in the tool cutting trajectory guide mechanism through a threaded connection structure, and the lower end is fixedly assembled with the locking sleeve 17 through a threaded connection structure. The locking sleeve 17 is disc-shaped, and a top screw 18 is equipped on its bottom surface. The top screw 18 cooperates with the positioning sleeve 10 to clamp the workpiece; the upper end of the tool assembly is equipped with the tool cutting trajectory guide mechanism, and the lower end extends into the interior of the workpiece. Under the guiding action of the tool cutting trajectory guide mechanism, the intersecting line edges 1-3 of the workpiece are cut off.

[0059] See Figure 2 、 Figure 7 、 Figure 8、 Figure 9 、 Figure 10 、 Figure 11 The device for cutting the edge of the intersection line of the internal cross hole of the three-way oil nozzle of the present invention has a tool cutting trajectory guide mechanism including an upper fixed seat 3, a profiling member 5 and a profiling pin 4. The bottom of the upper fixed seat 3 is connected to the workpiece clamping and positioning mechanism. A variable-section inner hole running through the upper and lower parts is provided in the upper fixed seat 3. The middle part of the variable-section inner hole is a square hole 3-3. A profiling member 5 is fitted in the square hole 3-3 of the upper fixed seat 3. The profiling member 5 is provided with a variable-section center hole running through the upper and lower parts. A semicircular cross-section annular convex edge 5-2 with the same shape as the workpiece intersection line edge 1-3 is provided at the variable-section step portion at the lower end of the center hole. The profiling pin 4 is installed on the top of the tool assembly, and the outer wall of the profiling pin 4 fits with the semicircular cross-section annular convex edge 5-2 of the profiling member 5.

[0060] See Figure 2 、 Figure 5 、 Figure 6 、 Figure 12 The device for cutting the edge of the intersection line of the internal cross hole of the three-way oil nozzle of the present invention comprises a tool assembly including a rotating sleeve 6, a fixed rod 14 and a countersink 11; the upper end of the rotating sleeve 6 is a disc structure, which is placed in the variable cross-section inner hole of the upper fixed seat 3, and a rectangular window 3-1 is provided in the upper fixed seat 3 and its corresponding part along the radial direction. The lower end of the rotating sleeve 6 is a spherical surface, and the countersink 11 is installed in the rotating sleeve; the countersink 11 is a long strip rod, the upper end of which is hingedly assembled on the side wall of the rotating sleeve 6 through the first pin 7. The lower end of 11 is provided with an arc-shaped groove cutting edge 11-1, and the arc-shaped groove cutting edge 11-1 is consistent with the shape of the arc surface formed after the intersection line edge 1-3 of the workpiece is cut off; the upper end of the fixing rod 14 is provided with a profiling pin assembly hole that cooperates with the profiling pin 4 in the tool cutting trajectory guide mechanism, and the profiling pin 4 is installed in the profiling pin assembly hole in an interference fit manner. The lower part of the fixing rod 14 is inserted into the inner hole of the rotating sleeve 6, and has a semi-cylindrical structure. It is located on the back of the countersinking cutter 11, and provides support force for the countersinking cutter 11 through the fixing rod 14.

[0061] See Figure 2 、 Figure 3 、 Figure 4The present invention relates to a device for cutting the edge of the intersection line of the internal cross hole of a three-way oil nozzle, which is further provided with a tool axial movement distance measuring mechanism, wherein the tool axial movement distance measuring mechanism includes a dial indicator 23, a clamping sleeve 2 and a screw sleeve 22; the measuring rod of the dial indicator 23 contacts the upper end of the tool assembly, and the dial indicator 23 is clamped and fixed by the cooperation of the clamping sleeve 2, the screw sleeve 22 and the upper fixed seat 3; the clamping sleeve 2 is a tapered sleeve structure, which is installed in the tapered hole 3-2 of the variable-section inner hole of the upper fixed seat 3 of the tool cutting trajectory guide mechanism, and a plurality of groups of radial slots 2-1 are provided on the side wall of the clamping sleeve 2, one of which is connected to the inner hole of the clamping sleeve 2; the screw sleeve 22 is sleeved on the outside of the tapered hole part of the upper fixed seat 3 by a threaded connection. During the downward screwing process of the screw sleeve 22, its top circular surface applies downward pressure to the clamping sleeve 2, causing the radial slots of the clamping sleeve to shrink and gather, thereby clamping and fixing the dial indicator 23.

[0062] See Figure 1 、 Figure 2 、 Figure 15 、 Figure 16 The device for cutting the edge of the intersection line of the internal cross hole of the three-way oil nozzle of the present invention is also provided with a feed amount control mechanism; the feed amount control mechanism includes a feed hook 16, a countersink reset spring wire 12 and a feed hook reset spring wire 13, and matched therewith, a feed hook assembly groove 15-1, a second hinge shaft assembly hole 15-2 and a feed hook reset spring wire mounting hole 15-3 are provided on the side wall of the lower fixed seat 15, and a countersink reset spring wire mounting hole is provided on the side wall of the rotating sleeve 6; the feed hook 16 consists of a vertical arm and a hook portion, and the upper end of the vertical arm is hinged to the lower fixed seat 15 through the second pin shaft 9. During assembly, the hook portion is inserted into the horizontal hole 1-1 of the workpiece of the three-way oil nozzle 1, and the upper surface of the hook portion is a wedge-shaped surface. When the feed hook 16 swings toward the direction of entering the horizontal hole 1-1 of the workpiece, the wedge-shaped surface cooperates with the spherical surface of the lower end of the rotating sleeve 6 to push the rotating sleeve 6 and the countersinking cutter 11 upward; the upper end of the countersinking cutter reset spring wire 12 is installed in the countersinking cutter reset spring wire mounting hole on the side wall of the rotating sleeve 6, and the lower end is in conflict with the countersinking cutter rod; the upper end of the feed hook reset spring wire 13 is installed in the feed hook reset spring wire mounting hole 15-3 on the side wall of the lower fixing seat, and the lower end is in conflict with the vertical arm of the feed hook 16.

[0063] See Figure 1 、 Figure 2 、 Figure 5 、 Figure 6The device for cutting the intersecting line of the cross hole inside the three-way oil nozzle of the present invention is also provided with a tool cutting trajectory guide mechanism zero adjustment component; the tool cutting trajectory guide mechanism zero adjustment component includes a scale sleeve 20 and a positioning pin 21; the scale sleeve 20 is a tapered sleeve, which is sleeved on the outside of the upper fixing seat 3 and assembled with the upper fixing seat 3 through a threaded connection structure. A threaded angle scale is provided on its tapered outer wall, an annular groove 20-1 is provided on the inner side wall of the scale sleeve 20, and a diameter is provided on the side wall of the annular groove 20-1. Towards the opposite positioning pin assembly hole 20-2, to match it, an axial long hole 3-4 is provided on the inner wall of the square hole 3-3 of the upper fixing base 3, which is opposite to the positioning pin hole assembly hole 20-2, and a pin hole 5-1 is provided at the corresponding position on the side wall of the profiling member 5. An axial length scale corresponding to the threaded screw-in angle scale is provided on the outer wall of the upper fixing base 3; two groups of positioning pins 21 are provided, which are respectively inserted into the axial long hole 3-4 of the upper fixing base 3 from the two ends of the positioning pin assembly hole 20-2 on the side wall of the annular groove 20-1 of the scale sleeve 20.

[0064] See Figure 1 The device for cutting the edge of the intersecting line of the internal cross hole of a three-way oil nozzle described in the present invention is provided with a compression spring 8 between the rotating sleeve 6 of its tool assembly and the positioning sleeve 10 of the workpiece clamping and positioning mechanism; a positioning element 19 is provided at the threaded connection part of the upper fixing seat 3 and the lower fixing seat 15, and the positioning element 19 is preferably a positioning screw or a positioning pin.

[0065] See Figure 1 、 Figure 5 In the preferred embodiment of the device for cutting the edge of the intersection line of the internal cross hole of a three-way oil nozzle described in the present invention, the outer walls of the screw sleeve 22 and the upper end disc of the rotating sleeve 6 are both provided with coarse straight anti-slip patterns; the outer wall of the mating part of the upper fixing seat 3 and the rotating sleeve 6 is provided with a mesh-like anti-slip pattern.

[0066] See Figures 1 to 16When the present invention is used to cut off the edge 1-3 of the intersection line of the internal cross hole of the three-way oil nozzle 1 workpiece, the three-way oil nozzle 1 workpiece to be processed is first clamped and fixed by the workpiece clamping and positioning mechanism; then the upper fixing seat 3 and the lower fixing seat 15 are assembled through the threaded structure, and the circumferential positioning between the two is ensured by the positioning element 19; the tool assembly is inserted into the vertical hole 1-2 of the workpiece, and the upper end disc of the rotating sleeve 6 is located at the rectangular window 3-1 position of the upper fixing seat 3; then the scale sleeve 20 in the zero adjustment assembly of the tool cutting trajectory guide mechanism is screwed so that the 0 line of the angle scale on the outer wall of the scale sleeve 20 corresponds to the center position point of the 0 line of the length scale on the outer wall of the upper fixing seat 3. At this time, the semicircular cross-section annular convex edge 5-2 of the profiling member 5 is aligned with the upper edge 1-3 of the intersection line of the internal cross hole of the three-way oil nozzle 1 workpiece. The lower and upper parts are opposite to each other to ensure that the spatial directions of the two are completely consistent; the operator holds the outer wall of the lower fixed seat 15 with one hand, applies force to the feed hook 16, and pushes the rotating sleeve in the tool assembly upward through the wedge-shaped surface of the hook part of the feed hook 16 to complete a feed process, and the feed amount at this time can be read through the dial indicator 23; then the operator rotates the rotating sleeve 6 through the rectangular window 3-1 of the upper fixed seat 3 with the other hand to complete a 360-degree rotation. Under the action of the tool cutting trajectory guide mechanism, the arc-shaped groove cutting edge 11-1 of the countersink 11 at the upper end of the tool assembly cuts off the edge 1-3 of the intersection line of the internal cross hole of the three-way oil nozzle 1 workpiece; repeat the above-mentioned feed and cutting operation process until the dial indicator reading is consistent with the set value, that is, the cutting operation of the edge 1-3 of the intersection line of the internal cross hole of the three-way oil nozzle 1 workpiece is completed.

Claims

1. A device for cutting the edge of the intersection line of the cross hole inside the three-way oil nozzle, characterized by: It is provided with a workpiece clamping and positioning mechanism, a tool assembly and a tool cutting path guiding mechanism; the workpiece clamping and positioning mechanism clamps and fixes the three-way oil nozzle (1) workpiece; the upper end of the tool assembly is equipped with the tool cutting path guiding mechanism, and the lower end extends into the workpiece, and under the guidance of the tool cutting path guiding mechanism, the intersection line edge (1-3) of the workpiece is cut off; the tool cutting path guiding mechanism includes an upper fixing seat (3), a profiling member (5) and a profiling pin (4); the bottom of the upper fixing seat (3) is connected to the workpiece clamping and positioning mechanism, and the upper fixing seat ( 3) is provided with a variable cross-section inner hole that passes through from top to bottom, the middle part of the variable cross-section inner hole is a square hole (3-3), a profiling member (5) is fitted in the square hole (3-3) of the upper fixing seat (3), the profiling member (5) is provided with a variable cross-section center hole that passes through from top to bottom, a semicircular cross-section annular convex edge (5-2) having the same shape as the workpiece intersection line edge (1-3) is provided at the variable cross-section step portion at the lower end of the center hole, the profiling pin (4) is installed on the top of the tool assembly, and the outer wall of the profiling pin (4) is in contact with the semicircular cross-section annular convex edge (5-2) of the profiling member (5); It is also provided with a feed amount control mechanism; the feed amount control mechanism comprises a feed hook (16), a countersink reset spring wire (12) and a feed hook reset spring wire (13), and matched therewith, a feed hook assembly groove (15-1), a second hinge shaft assembly hole (15-2) and a feed hook reset spring wire mounting hole (15-3) are provided on the side wall of the lower fixed seat (15), and a countersink reset spring wire mounting hole is provided on the side wall of the rotating sleeve (6); the feed hook (16) is composed of a vertical arm and a hook part, the upper end of the vertical arm is hingedly assembled with the lower fixed seat (15) through the second pin shaft (9), and the hook part is inserted into the three-way oil nozzle (1) working In the horizontal hole (1-1) of the workpiece, the upper surface of the hook portion is a wedge-shaped surface. When the feed hook (16) swings in the direction of entering the horizontal hole (1-1) of the workpiece, the wedge-shaped surface cooperates with the spherical surface at the lower end of the rotating sleeve (6) to push the rotating sleeve (6) and the countersinking tool (11) to move upward; the upper end of the countersinking tool reset spring wire (12) is installed in the countersinking tool reset spring wire installation hole on the side wall of the rotating sleeve (6), and the lower end is in conflict with the countersinking tool rod; the upper end of the feed hook reset spring wire (13) is installed in the feed hook reset spring wire installation hole (15-3) on the side wall of the lower fixed seat, and the lower end is in conflict with the vertical arm of the feed hook (16); The tool cutting trajectory guide mechanism zero adjustment component is also provided; the tool cutting trajectory guide mechanism zero adjustment component comprises a scale sleeve (20) and a positioning pin (21); the scale sleeve (20) is a conical sleeve, which is sleeved on the outside of the upper fixing seat (3) and assembled with the upper fixing seat (3) through a threaded connection structure, and a threaded angle scale is provided on its conical outer wall, an annular groove (20-1) is provided on the inner side wall of the scale sleeve (20), and a radially opposite positioning pin assembly hole (20-2) is provided on the side wall of the annular groove (20-1). Matching, an axial long hole (3-4) is provided on the inner wall of the square hole (3-3) of the upper fixing seat (3) and is opposite to the position of the positioning pin assembly hole (20-2), a pin hole (5-1) is provided at a corresponding position on the side wall of the profiling member (5), and an axial length scale corresponding to the screw-in angle scale is provided on the outer wall of the upper fixing seat (3); the positioning pins (21) are provided in two groups, and are respectively inserted into the axial long hole (3-4) of the upper fixing seat (3) from both ends of the positioning pin assembly hole (20-2) on the side wall of the annular groove (20-1) of the scale sleeve (20).

2. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 1, characterized in that: The workpiece clamping and positioning mechanism comprises a positioning sleeve (10), a lower fixing seat (15), a locking sleeve (17) and a top screw (18); the positioning sleeve (10) is installed above the workpiece and is connected to the upper part of the workpiece through a threaded connection structure, the upper part of the positioning sleeve (10) is a cylindrical sleeve and the lower part is a square sleeve; the lower fixing seat (15) is provided with a variable cross-section inner hole that passes through from top to bottom, and is sleeved on the outside of the workpiece and the positioning sleeve (10), and the matching part with the positioning sleeve (10) is a square hole structure, the upper end of the lower fixing seat (15) is fixedly assembled with the upper fixing seat (3) in the tool cutting trajectory guide mechanism through a threaded connection structure, and the lower end is fixedly assembled with the locking sleeve (17) through a threaded connection structure; the locking sleeve (17) is disc-shaped, and a top screw (18) is equipped on its bottom surface, and the workpiece is clamped and fixed by the top screw (18) and the positioning sleeve (10).

3. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 2, characterized in that: The tool assembly is provided with a rotating sleeve (6), a fixed rod (14) and a countersink (11); the upper end of the rotating sleeve (6) is a disc structure, which is placed in the variable cross-section inner hole of the upper fixed seat (3), and a rectangular window (3-1) is provided on the upper fixed seat (3) and its corresponding part in the radial direction, the lower end of the rotating sleeve (6) is a spherical surface, and the countersink (11) is installed in the rotating sleeve; the countersink (11) is a long strip rod, the upper end of which is hingedly assembled on the side wall of the rotating sleeve (6) through a first pin shaft (7), and a circular arc groove blade is provided on the lower end of the countersink (11). The arc-shaped groove cutting edge (11-1) is consistent with the arc surface shape formed after the edge (1-3) of the intersection line of the workpiece is cut off; the upper end of the inserting rod (14) is provided with a profiling pin assembly hole that cooperates with the profiling pin (4) in the tool cutting trajectory guide mechanism, and the profiling pin (4) is installed in the profiling pin assembly hole in an interference fit manner. The lower part of the inserting rod (14) is inserted into the inner hole of the rotating sleeve (6), and has a semi-cylindrical structure. It is located on the back of the countersinking cutter (11), and provides support force for the countersinking cutter (11) through the inserting rod (14).

4. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 3, characterized in that: It is also provided with a tool axial movement distance measuring mechanism, which comprises a dial indicator (23), a clamping sleeve (2) and a screw sleeve (22); a measuring rod of the dial indicator (23) contacts the upper end of the tool assembly, and the dial indicator (23) is clamped and fixed by the cooperation of the clamping sleeve (2), the screw sleeve (22) and the upper fixing seat (3).

5. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 4, characterized in that: The clamping sleeve (2) is a tapered sleeve structure, which is installed in the tapered hole (3-2) of the variable-section inner hole of the upper fixing seat (3) of the tool cutting trajectory guide mechanism, and a plurality of groups of radial slots (2-1) are provided on the side wall of the clamping sleeve (2), one of which is connected to the inner hole of the clamping sleeve (2); the screw sleeve (22) is sleeved on the outside of the tapered hole of the upper fixing seat (3) by means of a threaded connection.

6. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 5, characterized in that: A compression spring (8) is also provided between the rotating sleeve (6) of the tool assembly and the positioning sleeve (10) of the workpiece clamping and positioning mechanism.

7. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 6, characterized in that: A positioning element (19) is provided at the threaded connection portion between the upper fixing seat (3) and the lower fixing seat (15), and the positioning element (19) is a positioning screw or a positioning pin.

8. The device for cutting the edge of the intersection line of the inner cross hole of a three-way oil nozzle according to claim 4, characterized in that: The outer walls of the upper discs of the screw sleeve (22) and the rotating sleeve (6) are both provided with coarse straight anti-skid patterns; and the outer wall of the matching portion of the upper fixing seat (3) and the rotating sleeve (6) is provided with a mesh-like anti-skid pattern.

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