A tool and method for removing cross-hole burrs

Abstract

The application discloses a tool and method for removing burrs of cross holes, and belongs to the technical field of diesel engine machining. The tool for removing burrs of cross holes comprises a core rod, a plurality of burr-removing mechanisms are detachably installed at the front end of the core rod; the burr-removing mechanism comprises a compression spring, connecting plates are fixedly installed at both ends of the compression spring, a steel ball is movably placed on the surface of the connecting plate, a clamping mechanism for clamping the steel ball is arranged on the surface of the connecting plate, and a locking mechanism for locking the clamping mechanism is arranged on the surface of the connecting plate; a limiting mechanism is detachably installed on the surface of the core rod, and a bolt is threadedly connected to the connecting position of the limiting mechanism and the core rod. The device enters the inside of the main oil channel from the main oil hole, the connecting plate drives the steel ball to pop out from the second through hole under the action of the compression spring, the upper part of the steel ball is higher than the surface of the limiting sleeve, burrs at the cross and interpenetrating positions of each oil hole and the main oil channel hole are hit by rotating, the burrs are made to fall off, and thus the burrs are removed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the diesel engine processing technical field, and particularly relates to a tool and method for removing burrs of intersecting holes. BACKGROUND

[0002] The main oil passage of a diesel engine cylinder block is a main oil passage hole of a lubricating system, and there are inclined oil holes for shunting to main bearing holes and camshaft holes. The inclined oil holes intersect with the main oil passage hole, and burrs are generated at the intersecting and penetrating positions. If the burrs are not removed, they will be brought into the main bearing hole during the operation of the diesel engine, resulting in sharp wear of the crankshaft and the main bearing bush and burning of the bush, which seriously affects the performance and service life of the diesel engine.

[0003] The most common method for removing the burrs at the intersecting and penetrating positions in the main oil passage hole at present is electrolytic deburring, using a special deburring intersecting hole tool to process and remove from the oil hole intersecting with the main oil passage, using a high-pressure water flow flushing method, and using a manual removal method of inserting an abrasive brush into the main oil passage hole and the inclined oil hole and repeatedly brushing.

[0004] However, the electrolytic deburring method uses an electrolyte such as sodium nitrate, which is toxic and can easily pollute the environment; the special deburring intersecting hole tool is expensive, and requires that the two intersecting holes are orthogonal (the hole center lines intersect), and if the center line eccentricity of the intersecting holes is greater, the burrs at the intersecting positions cannot be removed by the tool; the high-pressure water flow flushing method is unreliable, and the high-pressure pump generating the high-pressure water is easily damaged; the manual removal method of inserting an abrasive brush into the main oil passage hole and the inclined oil hole and repeatedly brushing requires manual operation, has high labor intensity, and has poor consistency.

[0005] Therefore, it is urgent to provide a tool and method for removing burrs of intersecting holes to solve the above problems. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a tool and method for removing burrs of intersecting holes.

[0007] The technical solution adopted to solve the above technical problem is to provide a tool and method for removing burrs of intersecting holes, comprising a core rod, and a plurality of deburring mechanisms detachably mounted at the front end of the core rod.

[0008] The deburring mechanism comprises a compression spring, two ends of the compression spring are fixedly provided with a connecting plate, a steel ball is movably placed on the surface of the connecting plate, the surface of the connecting plate is provided with a clamping mechanism for clamping the steel ball, and the surface of the connecting plate is provided with a locking mechanism for locking the clamping mechanism.

[0009] The core rod surface is detachably provided with a limiting mechanism, and a bolt is threadedly connected at the connecting position of the limiting mechanism and the core rod.

[0010] The core rod comprises a clamping section, one end of the clamping section is fixedly provided with a supporting section, one end of the supporting section is fixedly provided with a working section, the working section is provided with a plurality of first through holes, and the deburring mechanism is detachably arranged in the first through holes.

[0011] When the device is used, the clamping section can be arranged on a tool shank or an air gun, the length of the supporting section determines the length of the device that can be extended and retracted in the diesel engine cylinder, the deburring mechanism placed in the first through holes in the working section can enter the diesel engine cylinder with the working section to perform deburring work, the device enters the main oil passage from the main oil hole, the connecting plate drives the steel ball to pop out from the second through hole under the action of the compression spring, the upper part of the steel ball is higher than the surface of the limiting sleeve, the burrs at the intersection of each oil hole and the main oil passage hole are hit by rotating, so that the burrs are removed, and the burrs are removed by the method of hitting the burrs by the steel ball.

[0012] The first through holes are arranged in five groups, three groups of the first through holes are arranged in a horizontal direction, two groups of the first through holes are arranged in a vertical direction, one group of the first through holes is arranged between the adjacent two first through holes in the horizontal direction, and the distance between the adjacent two first through holes is consistent.

[0013] The first through holes are arranged in different positions, so that the position of the deburring mechanism can be fixed, when the device is extended into the diesel engine cylinder, the deburring mechanism in the vertical direction and the horizontal direction can perform deburring work on the corresponding oil passage hole in the cylinder by rotating.

[0014] The limiting mechanism comprises a limiting sleeve, the limiting sleeve is movably sleeved on the surface of the working section, the inner diameter of the limiting sleeve is consistent with the outer diameter of the working section, the limiting sleeve is provided with a plurality of second through holes, the inner diameter of the second through hole is smaller than the inner diameter of the first through hole, and the diameter of the steel ball is smaller than the inner diameters of the first through hole and the second through hole.

[0015] The limiting sleeve protects the working section, and the limiting sleeve is provided with the second through hole corresponding to the first through hole, the steel ball can move in the first through hole, and the second through hole limits the steel ball, so that the upper part of the steel ball can extend to the outside of the limiting sleeve, and the steel ball exceeding the surface of the limiting sleeve is used for deburring work.

[0016] The application is further provided with: the second through hole is provided with five groups, the distribution position of the second through hole is consistent with the first through hole, a straight slot is arranged at the front end of the limiting sleeve, an extension block is fixedly installed at the front end of the working section, and the extension block is slidably connected in the straight slot.

[0017] Through the above technical scheme, the distribution position of the first through hole and the second through hole is consistent, so that the upper part of the steel ball can extend out of the surface of the limiting sleeve, when the limiting sleeve is sleeved on the surface of the working section, the extension block is inserted into the straight slot to fix the angle of the core rod, so that the first through hole and the second through hole always keep in mutual connection state.

[0018] The application is further provided with: screw holes are arranged on the surface of the extension block and the front end surface of the limiting sleeve, bolts are screw-connected in the screw holes, and the bolts are internal hexagonal cylindrical head screws.

[0019] Through the above technical scheme, the bolts are inserted into the screw holes on the surface of the extension block and the limiting sleeve, so that the limiting sleeve can be stably sleeved on the surface of the working section, avoiding that the limiting sleeve is separated from the surface of the working section in the deburring work, and causing the deburring mechanism to slide out of the first through hole and be left in the diesel engine cylinder.

[0020] The application is further provided with: the clamping mechanism comprises two clamping blocks, the two clamping blocks are slidably connected on the surface of the connecting plate, a plurality of convex points are fixedly installed on the surface of the clamping block, the convex points are movably attached to the surface of the steel ball, and the shape of the clamping block is a quarter of a spherical shell.

[0021] Through the above technical scheme, the surface of the steel ball is easy to be abraded in long-term deburring work, which affects the subsequent deburring effect, so that the steel ball needs to be replaced regularly, when the new steel ball is replaced, the two clamping blocks move towards each other to clamp the surface of the steel ball, the clamping block is provided in the shape of a quarter of a spherical shell, the lower part of the steel ball is wrapped, the friction between the clamping block and the surface of the steel ball is further increased through the convex points in the clamping block, so that the clamping effect is improved.

[0022] The application is further provided with: a bidirectional screw rod is rotatably connected in the connecting plate, symmetrical screw sleeves are screw-connected on the surface of the bidirectional screw rod, connecting rods are fixedly installed on the surface of the two screw sleeves, the lower surfaces of the two connecting rods are fixedly connected with the two clamping blocks, symmetrical connecting rod grooves are arranged on the surface of the connecting plate, the connecting rods are slidably connected in the connecting rod grooves, symmetrical screw sleeve grooves are arranged in the connecting plate, and the screw sleeves are slidably connected in the screw sleeve grooves.

[0023] Through the technical scheme, when the bidirectional screw rod rotates clockwise, the two screw sleeves move towards each other, further drive the two clamping blocks to move towards each other, thereby effectively fixing the lower part of the steel ball, when a new steel ball needs to be replaced, the two clamping blocks move away from each other by rotating the bidirectional screw rod counterclockwise, the worn steel ball is taken out, and then the clamping blocks re-clamp the steel ball by rotating the bidirectional screw rod clockwise, and through the arrangement of the connecting rod groove and the screw sleeve groove, the connecting rod and the screw sleeve can move more stably.

[0024] The locking mechanism comprises a rotating handle, the rotating handle is rotatably connected to the surface of the connecting plate, one end of the bidirectional screw rod is fixedly provided with a first bevel gear, the lower surface of the rotating handle is fixedly provided with a rotating rod, the end of the rotating rod is fixedly provided with a second bevel gear, the first bevel gear is engaged with the second bevel gear, and the rotating handle is movably provided with a bolt.

[0025] Through the technical scheme, when the rotating handle rotates, the rotating rod rotates, so that the second bevel gear rotates, the first bevel gear at the end of the bidirectional screw rod is engaged with the second bevel gear, so that the bidirectional screw rod can follow the rotating to move the clamping block, in order to ensure that the clamping block reverses after clamping the steel ball, at this time, the bolt is inserted into the hole in the surface of the connecting plate to fix the rotating handle, so that the clamping block can stably clamp the steel ball.

[0026] A method for removing burrs of a cross hole tool, comprising the following steps:

[0027] Step one: install the tool on the tool holder or the air gun, and drive the tool holder or the air gun to clamp the core rod through the machining center;

[0028] Step two: rotate the core rod into the main oil channel, when passing through the main oil channel entity section, the steel ball is pressed by the inner wall of the main oil channel, and the highest points of the two steel balls controlled by each compression spring are attached to the inner wall of the main oil channel;

[0029] Step three: when the steel ball runs to the cross hole, the steel ball is bounced out under the restoring action of the compression spring, and the two steel balls controlled by each compression spring extend into the cross hole and hit the burrs around the cross hole;

[0030] Step four: hold the core rod and repeatedly rotate the tool for removing the burrs of the cross hole, the steel ball repeatedly bounces out and hits the burrs around the cross hole, and finally the burrs are removed completely.

[0031] The beneficial effects of the present application are as follows: (1) the present application is provided with a deburring mechanism, the device enters the main oil hole into the main oil channel, the connecting plate drives the steel ball to pop out from the second through hole under the action of the compression spring, the upper part of the steel ball is higher than the surface of the limiting sleeve, the burrs at the intersection of each oil hole and the main oil channel hole are hit by rotating, the burrs are removed, the burrs are removed by the method of steel ball pop-out hitting burrs, which can be operated manually and on the equipment, and the cost is low, the efficiency is high, and the environment is not polluted; (2) the surface of the steel ball is easy to wear in long-term deburring work and affect the subsequent deburring effect, so the steel ball needs to be replaced regularly, when replacing the new steel ball, the two clamping blocks move towards each other to clamp the surface of the steel ball, the clamping block is quarter of a spherical shell, and the lower part of the steel ball is wrapped, the friction force between the clamping block and the surface of the steel ball is further increased through the convex points in the clamping block, so that the clamping effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0033] Figure 2 It is a schematic diagram of the core rod cross-sectional structure of the present application;

[0034] Figure 3 It is a schematic diagram of the deburring mechanism structure of the present application;

[0035] Figure 4 It is a schematic diagram of the limiting mechanism structure of the present application;

[0036] Figure 5 It is a schematic diagram of the bolt structure of the present application;

[0037] Figure 6 It is Figure 3 The enlarged view at A in the figure.

[0038] Fig. 1, core rod; 11, clamping section; 12, support section; 13, working section; 14, first through hole; 15, extension block; 2, deburring mechanism; 21, compression spring; 22, connecting plate; 23, steel ball; 3, limiting mechanism; 31, limiting sleeve; 32, second through hole; 33, straight slot; 34, screw hole; 4, bolt; 5, clamping mechanism; 51, clamping block; 52, convex point; 53, bidirectional screw rod; 54, screw sleeve; 55, connecting rod; 56, screw sleeve groove; 57, connecting rod groove; 58, first bevel gear; 6, locking mechanism; 61, rotating handle; 62, rotating rod; 63, second bevel gear; 64, bolt; 65, insertion hole. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] Please see Figures 1-6 This application provides a tool and method for removing burrs from cross holes, including a core rod 1, with a plurality of deburring mechanisms 2 detachably mounted on the front end of the core rod 1;

[0041] like Figure 2 As shown, the core rod 1 includes a clamping section 11, a support section 12 is fixedly installed at one end of the clamping section 11, a working section 13 is fixedly installed at one end of the support section 12, and a plurality of first through holes 14 are opened on the surface of the working section 13. The deburring mechanism 2 is detachably installed inside the first through holes 14.

[0042] In this embodiment: When using this device, the clamping section 11 can be installed on the knife handle or the air gun. The length of the support section 12 determines the length by which the device can extend and retract inside the diesel engine cylinder. The deburring mechanism 2 is placed in the first through hole 14 inside the working section 13 and can follow the working section 13 into the diesel engine cylinder to perform deburring work. The device enters the main oil passage from the main oil hole. Under the action of the compression spring 21, the connecting plate 22 drives the steel ball 23 to pop out from the second through hole 32. The upper part of the steel ball 23 is higher than the surface of the limiting sleeve 31. By rotating, it strikes the burrs at the intersection of each oil hole and the main oil passage hole, causing the burrs to fall off and thus removing the burrs cleanly. The burrs are removed by the method of the steel ball 23 popping out and striking the burrs to fall off.

[0043] like Figure 2 As shown, the first through hole 14 is set in five groups, with three groups of first through holes 14 distributed horizontally and two groups of first through holes 14 distributed vertically. A group of first through holes 14 in the vertical direction is set between two adjacent horizontal first through holes 14, and the distance between two adjacent first through holes 14 is the same.

[0044] In this embodiment, the first through holes 14 are distributed in different positions, so that the position of the deburring mechanism 2 can be fixed. When the device is inserted into the diesel engine cylinder, by rotating, the deburring mechanism 2 in the vertical and horizontal directions can perform deburring work on the corresponding oil passage holes inside the cylinder.

[0045] The deburring mechanism 2 includes a compression spring 21, with connecting plates 22 fixedly installed at both ends of the compression spring 21. A steel ball 23 is movably placed on the surface of the connecting plate 22. A clamping mechanism 5 for clamping the steel ball 23 is provided on the surface of the connecting plate 22. A locking mechanism 6 for locking the clamping mechanism 5 is provided on the surface of the connecting plate 22.

[0046] As Figure 6 shown in the figure, the clamping mechanism 5 includes two clamping blocks 51, which are slidingly connected to the surface of the connecting plate 22. A plurality of convex points 52 are fixedly installed on the surface of the clamping block 51, which are in movable contact with the surface of the steel ball 23. The shape of the clamping block 51 is a quarter of a spherical shell.

[0047] In this embodiment: the surface of the steel ball 23 is prone to wear during long-term deburring work, which affects the subsequent deburring effect. Therefore, the steel ball 23 needs to be replaced regularly. When replacing the new steel ball 23, the two clamping blocks 51 move towards each other to clamp the surface of the steel ball 23. The clamping block 51 is arranged in the shape of a quarter of a spherical shell, which wraps the lower part of the steel ball 23. The convex points 52 inside the clamping block 51 further increase the friction between the clamping block 51 and the surface of the steel ball 23, thereby improving the clamping effect.

[0048] As Figure 6 shown in the figure, the connecting plate 22 is rotatably connected with a bidirectional screw rod 53 inside. The surface of the bidirectional screw rod 53 is threadedly connected with symmetrical screw sleeves 54. The surface of the two screw sleeves 54 is fixedly installed with connecting rods 55. The two connecting rods 55 are respectively fixedly connected with the lower surfaces of the two clamping blocks 51. The surface of the connecting plate 22 is provided with symmetrical connecting rod grooves 57. The connecting rod 55 is slidingly connected inside the connecting rod groove 57. The inside of the connecting plate 22 is provided with symmetrical screw sleeve grooves 56. The screw sleeve 54 is slidingly connected inside the screw sleeve groove 56.

[0049] In this embodiment: when the bidirectional screw rod 53 rotates clockwise, the two screw sleeves 54 move towards each other, further driving the two clamping blocks 51 to move towards each other through the connecting rod 55, thereby effectively fixing the lower part of the steel ball 23. When a new steel ball 23 needs to be replaced, rotate the bidirectional screw rod 53 counterclockwise to move the two clamping blocks 51 away from each other. After removing the worn steel ball 23, rotate the bidirectional screw rod 53 clockwise again. The clamping block 51 re-clamps the steel ball 23. Through the arrangement of the connecting rod groove 57 and the screw sleeve groove 56, the connecting rod 55 and the screw sleeve 54 can move more stably.

[0050] As Figure 6 shown in the figure, the locking mechanism 6 includes a rotating handle 61, which is rotatably connected to the surface of the connecting plate 22. One end of the bidirectional screw rod 53 is fixedly installed with a first bevel gear 58. The lower surface of the rotating handle 61 is fixedly installed with a rotating rod 62. The end of the rotating rod 62 is fixedly installed with a second bevel gear 63. The first bevel gear 58 is engaged with the second bevel gear 63. The rotating handle 61 is movably inserted with a latch 64. The surface of the connecting plate 22 is provided with a plurality of insertion holes 65. The latch 64 is movably inserted inside the insertion hole 65.

[0051] In this embodiment: when the handle 61 is rotated, the rotating rod 62 rotates, thereby causing the second bevel gear 63 to rotate. The first bevel gear 58 at the end of the bidirectional lead screw 53 meshes with the second bevel gear 63, so that the bidirectional lead screw 53 can follow the rotation to move the clamping block 51. To ensure that the bidirectional lead screw 53 reverses after the clamping block 51 clamps the steel ball 23, the pin 64 is inserted into the insertion hole 65 on the surface of the connecting plate 22 to fix the handle 61, so that the clamping block 51 can stably clamp the steel ball 23.

[0052] A limiting mechanism 3 is detachably installed on the surface of the core rod 1. A bolt 4 is threadedly connected to the core rod 1 at the connection between the limiting mechanism 3 and the core rod 1. The bolt 4 is an internal hexagonal head screw.

[0053] like Figure 4 As shown, the limiting mechanism 3 includes a limiting sleeve 31, which is movably fitted on the surface of the working section 13. The inner diameter of the limiting sleeve 31 is the same as the outer diameter of the working section 13. The surface of the limiting sleeve 31 is provided with a plurality of second through holes 32. The inner diameter of the second through holes 32 is smaller than the inner diameter of the first through hole 14. The diameter of the steel ball 23 is smaller than the inner diameter of the first through hole 14 and the second through hole 32.

[0054] In this embodiment: the limiting sleeve 31 protects the working section 13. At the same time, the surface of the limiting sleeve 31 is provided with a second through hole 32 corresponding to the first through hole 14. The steel ball 23 can move inside the first through hole 14, while the second through hole 32 limits the steel ball 23, so that the upper part of the steel ball 23 can extend to the outside of the limiting sleeve 31. The steel ball 23 that extends beyond the surface of the limiting sleeve 31 is used for deburring.

[0055] like Figure 4 As shown, the second through hole 32 is set in five groups, and the distribution positions of the second through hole 32 and the first through hole 14 are consistent. The front end of the limiting sleeve 31 is provided with a straight groove 33, and the front end of the working section 13 is fixedly installed with an extension block 15, which is slidably connected inside the straight groove 33.

[0056] In this embodiment: the first through hole 14 and the second through hole 32 are distributed in the same position, thereby ensuring that the upper part of the steel ball 23 can extend out of the surface of the limiting sleeve 31. When the limiting sleeve 31 is fitted on the surface of the working section 13, the extension block 15 is inserted into the straight groove 33 to fix the angle of the core rod 1, thereby ensuring that the first through hole 14 and the second through hole 32 always remain in a connected state.

[0057] like Figure 5 As shown, both the surface of the extension block 15 and the front end surface of the limiting sleeve 31 are provided with screw holes 34, and bolts 4 are threaded inside the screw holes 34.

[0058] In the embodiment: the bolt 4 is inserted into the screw hole 34 on the surface of the extension block 15 and the limiting sleeve 31, so that the limiting sleeve 31 can be stably sleeved on the surface of the working section 13, avoiding the limiting sleeve 31 from being separated from the surface of the working section 13 during the deburring work, causing the deburring mechanism 2 to slide out from the inside of the first through hole 14 and be left in the diesel engine cylinder.

[0059] A method for removing burrs from a cross hole, comprising the following steps:

[0060] Step one: install the tool on the tool holder or the air gun, and drive the tool holder or the air gun to clamp the core rod 1 through the machining center;

[0061] Step two: rotate the core rod 1 into the main oil channel, and when passing through the main oil channel solid section, the steel balls 23 are pressed by the inner wall of the main oil channel, and the highest points of the two steel balls 23 controlled by each compression spring 21 are in contact with the inner wall of the main oil channel;

[0062] Step three: when the steel balls 23 run to the cross hole, the steel balls 23 will pop out under the restoring action of the compression spring 21, and the two steel balls 23 controlled by each compression spring 21 extend into the cross hole and hit the burrs around the cross hole;

[0063] Step four: hold the core rod 1 and repeatedly rotate the tool for removing burrs from the cross hole, the steel balls 23 repeatedly pop out and hit the burrs around the cross hole, and finally the burrs are removed completely.

[0064] The working principle of the embodiment is as follows: the tool is installed on the tool holder or the air gun, the core rod 1 is clamped on the tool holder or the air gun by the machining center, and the tool is rotated to extend into the main oil channel. When passing through the main oil channel entity section, the steel ball 23 is pressed by the inner wall of the main oil channel. The highest point of the two steel balls 23 controlled by each compression spring 21 is in contact with the inner wall of the main oil channel. When the steel ball 23 runs to the intersection hole, the steel ball 23 will be bounced out under the restoring action of the compression spring 21. The two steel balls 23 controlled by each compression spring 21 extend to the inside of the intersection hole, can hit the burrs around the intersection hole, and make them fall off. Through the repeated rotary motion of the tool for removing the intersection hole burrs, the steel ball 23 repeatedly bounces out and hits the burrs around the intersection hole, and finally the burrs are removed. When the steel ball 23 is used for a long time, the surface is easy to wear and tear, which affects the subsequent deburring effect, so it is necessary to replace the steel ball 23 in time. When replacing the new steel ball 23, rotate the rotating handle 61 clockwise, rotate the rotating rod 62, and the second bevel gear 63 follows the rotation. The first bevel gear 58 at the end of the bidirectional screw rod 53 is engaged with the second bevel gear 63, so that the bidirectional screw rod 53 rotates clockwise, the two clamping blocks 51 move away from each other, and the worn steel ball 23 is taken out. Then rotate the rotating handle 61 counterclockwise, the bidirectional screw rod 53 rotates counterclockwise, the two screw sleeves 54 move towards each other, and the two clamping blocks 51 clamp the new steel ball 23 again. The clamping block 51 is arranged in the form of a quarter of a spherical shell, and the lower part of the steel ball 23 is wrapped. The convex points 52 in the clamping block 51 further increase the friction between the clamping block 51 and the surface of the steel ball 23.

[0065] The above merely describes the preferred embodiments of the present application and is not used to limit the protection scope of the present application.

Claims

1. A tool for removing burrs from a cross hole, comprising a core rod (1), characterized in that, The front end of the core rod (1) is detachably installed with a plurality of deburring mechanisms (2); The deburring mechanism (2) comprises a compression spring (21), both ends of the compression spring (21) are fixedly installed with a connecting plate (22), a steel ball (23) is movably placed on the surface of the connecting plate (22), a clamping mechanism (5) for clamping the steel ball (23) is arranged on the surface of the connecting plate (22), and a locking mechanism (6) for locking the clamping mechanism (5) is arranged on the surface of the connecting plate (22). The surface of the core rod (1) is detachably installed with a limiting mechanism (3), and the connecting portion of the limiting mechanism (3) and the core rod (1) is threadedly connected with a bolt (4). The core rod (1) comprises a clamping section (11), one end of the clamping section (11) is fixedly installed with a supporting section (12), one end of the supporting section (12) is fixedly installed with a working section (13), a plurality of first through holes (14) are formed in the surface of the working section (13), and the deburring mechanism (2) is detachably installed in the first through hole (14). The limiting mechanism (3) comprises a limiting sleeve (31), the limiting sleeve (31) is movably sleeved on the surface of the working section (13), the inner diameter of the limiting sleeve (31) is consistent with the outer diameter of the working section (13), a plurality of second through holes (32) are formed in the surface of the limiting sleeve (31), the inner diameter of the second through hole (32) is smaller than the inner diameter of the first through hole (14), and the diameter of the steel ball (23) is smaller than the inner diameters of the first through hole (14) and the second through hole (32). The second through hole (32) is provided in five groups, the distribution positions of the second through hole (32) and the first through hole (14) are consistent, a straight groove (33) is formed in the front end of the limiting sleeve (31), the front end of the working section (13) is fixedly installed with an extension block (15), and the extension block (15) is slidably connected in the straight groove (33).

2. A tool for removing burrs from intersecting holes according to claim 1, wherein The first through hole (14) is provided in five groups, three groups of the first through holes (14) are distributed in a horizontal direction, two groups of the first through holes (14) are distributed in a vertical direction, one group of the first through holes (14) is arranged in the middle of the two adjacent first through holes (14) in the horizontal direction, and the distance between the adjacent first through holes (14) is consistent.

3. The tool for removing burrs from intersecting holes according to claim 1, wherein Screw holes (34) are formed in the surface of the extension block (15) and the front end surface of the limiting sleeve (31), the screw holes (34) are threadedly connected with the bolts (4), and the bolts (4) are internal hexagonal cylindrical head screws.

4. The tool for removing burrs from intersecting holes according to claim 1, wherein The clamping mechanism (5) comprises two clamping blocks (51) slidably connected on the surface of the connecting plate (22), a plurality of convex points (52) are fixedly installed on the surface of the clamping block (51), the convex points (52) are movably attached to the surface of the steel ball (23), and the clamping block (51) is in the shape of a quarter of a spherical shell.

5. The tool for removing burrs from intersecting holes according to claim 1, wherein The connecting plate (22) is rotatably connected with a bidirectional screw rod (53), the surface of the bidirectional screw rod (53) is threadedly connected with symmetrical screw sleeves (54), two screw sleeves (54) are fixedly installed on the surface of the connecting plate (22), two connecting rods (55) are fixedly connected with the lower surfaces of the two clamping blocks (51) respectively, the connecting plate (22) is provided with symmetrical connecting rod grooves (57), the connecting rod (55) is slidably connected in the connecting rod groove (57), and the connecting plate (22) is provided with symmetrical screw sleeve grooves (56) in the inside.

6. A tool for removing burrs from intersecting holes according to claim 5, wherein The locking mechanism (6) comprises a rotating handle (61), the rotating handle (61) is rotatably connected on the surface of the connecting plate (22), one end of the bidirectional screw rod (53) is fixedly installed with a first bevel gear (58), the lower surface of the rotating handle (61) is fixedly installed with a rotating rod (62), the end of the rotating rod (62) is fixedly installed with a second bevel gear (63), the first bevel gear (58) is engaged with the second bevel gear (63), the rotating handle (61) is movably inserted with a bolt (64), and the surface of the connecting plate (22) is provided with a plurality of insertion holes (65).

7. A method of deburring a cross bore according to any one of claims 1-6, wherein, The method comprises the following steps: Step one: install the tool on the tool holder or the air gun, and drive the tool holder or the air gun to clamp the core rod (1) through the machining center; Step two: rotate the core rod (1) into the main oil channel, and when the core rod (1) passes through the main oil channel entity section, the steel balls (23) are pressed by the inner wall of the main oil channel, and the highest points of the two steel balls (23) controlled by each compression spring (21) are attached to the inner wall of the main oil channel; Step three: when the steel balls (23) run to the cross hole, the steel balls (23) will be bounced out under the restoring action of the compression spring (21), and the two steel balls (23) controlled by each compression spring (21) extend into the cross hole and hit the burrs around the cross hole; Step four: hold the core rod (1) and repeatedly rotate the tool for removing the burrs of the cross hole, the steel balls (23) repeatedly bounce out and hit the burrs around the cross hole, and finally the burrs are removed.

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