Burr removing equipment and method for non-coaxial cross holes

Abstract

The invention discloses a deburring device and method for non-coaxial cross holes, the device comprises a first power head (10), a second power head (20) and a third power head (30), the first power head (10) is used for machining a first hole, the second power head (20) is used for machining a second hole, and the third power head (30) is used for machining a third hole. The third power head (30) is used for removing burrs along the second hole after the first power head (10) removes burrs along the first hole through the first drill bit (11), and the third power head (30) is provided with a telescopic elastic chuck (32) and a deburring drill bit (31) installed on the telescopic elastic chuck (32); the direction of a spiral groove of the deburring drill bit (31) is opposite to that of a spiral groove of the second drill bit (21), and the third power head (30) drives the deburring drill bit (31) to rotate reversely during deburring. The equipment and the method are suitable for deburring of the different axial cross holes in metal machining, and the problem that burrs are not removed thoroughly is solved.

Description

Technical Field

[0001] The present invention relates to the field of metal processing technology, and in particular to a device for removing residual burrs in different axis intersecting holes. The present invention also relates to a method for removing residual burrs in different axis intersecting holes. Background Art

[0002] For most workpieces made of metal, due to the characteristics of the metal material itself, when a drill is used to process non-coaxial intersecting holes on the workpiece, it is particularly easy to leave burrs at the intersection of the two holes.

[0003] For example, the small valve seat 100 (see Figure 1 , Figure 2 ), its material is SUS304, the three large and small holes on both sides are typical non-coaxial cross holes, the holes numbered ①②③ are small holes 101, the holes numbered ④⑤⑥ are large holes 102, and a cross hole is formed at the butt joint of the two holes. During processing, clamping and positioning are performed, and independent power heads on both sides are used to process the large and small holes respectively.

[0004] Since the small hole 101 is formed before the large hole 102, the burrs are generated when the large hole 102 is processed. There are flaky burrs at the intersection, and it is more difficult to remove the burrs here. If burrs exist or the burrs are not removed completely, it will seriously affect the subsequent processing and assembly quality. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for removing burrs from non-coaxial intersecting holes. The device and method are suitable for removing burrs from non-coaxial intersecting holes in metal processing to solve the problem of incomplete burr removal.

[0006] To achieve the above-mentioned objectives, the present invention provides a burr removal device for non-axial intersecting holes, comprising a first power head and a second power head, wherein the first power head is used to process a first hole on a workpiece through a first drill bit, and the second power head is used to process a second hole on the workpiece that intersects the first hole and has a larger hole diameter than the first hole through a second drill bit, and also includes a third power head, wherein the third power head is used to remove burrs along the second hole after the first power head removes burrs along the first hole through the first drill bit, and the third power head is provided with a telescopic elastic chuck and a deburring drill bit installed on the telescopic elastic chuck, the spiral groove direction of the deburring drill bit is opposite to the spiral groove direction of the second drill bit, and the third power head drives the deburring drill bit to rotate in the opposite direction when removing burrs.

[0007] To achieve the above object, the present invention provides a method for removing burrs from non-coaxial cross holes, comprising:

[0008] Using a first power head to machine a first hole on a workpiece through a first drill bit;

[0009] Using a second power head to machine a second hole on the workpiece through a second drill, the second hole intersecting the first hole and having a larger hole diameter than the first hole;

[0010] Using a first power head to remove burrs along the first hole through a first drill bit;

[0011] A third power head is used to remove burrs along the second hole through a deburring drill bit. The third power head is configured to install the deburring drill bit through a telescopic elastic chuck and drive the deburring drill bit to rotate in the opposite direction when removing burrs. The deburring drill bit is configured so that the direction of the spiral groove is opposite to that of the second drill bit.

[0012] To achieve the above-mentioned objectives, the present invention provides a burr removal device for non-axial intersecting holes, comprising a first power head and a second power head, wherein the first power head is used to process a first hole on a workpiece through a first drill bit, and the second power head is used to process a second hole on the workpiece that intersects the first hole and has a larger hole diameter than the first hole through a second drill bit, and also includes a third power head, wherein the third power head is used to remove burrs along the first hole, the third power head is provided with a telescopic elastic chuck and a deburring drill bit installed on the telescopic elastic chuck, the spiral groove direction of the deburring drill bit is opposite to the spiral groove direction of the first drill bit, and the third power head drives the deburring drill bit to rotate in the opposite direction when removing burrs.

[0013] To achieve the above object, the present invention provides a method for removing burrs from non-coaxial cross holes, comprising:

[0014] Using a first power head to machine a first hole on a workpiece through a first drill bit;

[0015] Using a second power head to machine a second hole on the workpiece through a second drill, the second hole intersecting the first hole and having a larger hole diameter than the first hole;

[0016] A third power head is used to remove burrs along the first hole through a deburring drill bit. The third power head is configured to install the deburring drill bit through a telescopic elastic chuck and drive the deburring drill bit to rotate in the opposite direction when removing burrs. The deburring drill bit is configured so that the direction of the spiral groove is opposite to that of the first drill bit.

[0017] The present invention provides a burr removal device and method for non-coaxial cross holes, which is equipped with a third power head specifically for burr removal. When deburring, the first drill bit (i.e., the small hole drill bit) is first fed to allow the burr to flip from the first hole (i.e., the small hole) to the second hole (i.e., the large hole). Then, the third power head clamps the deburring drill bit through a telescopic elastic chuck to deburr the second hole (i.e., the large hole). The spiral groove direction of the deburring drill bit is opposite to the processing drill direction of the second hole. The deburring drill bit rotates under the drive of a rotating motor. After the servo feed reaches the bottom of the second hole, the top of the deburring drill bit is tightly attached to the bottom surface of the second hole because the workpiece is fixed and cannot be fed any further. Under the action of the servo feed, the elastic chuck is compressed to a set position, and the burr at the bottom of the second hole (i.e., the large hole) is simultaneously cut to achieve the purpose of removing the burr. In this process, the burr in the second hole will not be pressed into the first hole (i.e., the small hole) by the deburring drill bit, thereby ensuring that no burr will remain in the first hole and the second hole.

[0018] Another non-axial intersecting hole deburring device and method provided by the present invention is provided with a third power head specially used for deburring. When deburring is performed, the third power head clamps the deburring drill bit through the telescopic elastic chuck to deburr the first hole (i.e., the small hole). The spiral groove direction of the deburring drill bit is opposite to the processing drill direction of the first hole. The deburring drill bit rotates under the drive of the rotary motor. After the servo feed reaches the bottom of the first hole, the top of the deburring drill bit is tightly attached to the bottom surface of the first hole because the workpiece is fixed and cannot be fed any further. Under the action of the servo feed, the elastic chuck is compressed to the set position and the burrs at the bottom of the first hole (i.e., the small hole) are simultaneously cut to achieve the purpose of removing the burrs. In this process, the burrs in the first hole will not be pressed into the second hole (i.e., the large hole) by the deburring drill bit, thereby ensuring that no burrs will remain in the first hole and the second hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a small valve seat of a four-way reversing valve;

[0020] Figure 2 for Figure 1 Left side view of the small valve seat shown;

[0021] Figure 3 A schematic diagram of the structure of a device for removing burrs from non-coaxial intersecting holes provided by an embodiment of the present invention;

[0022] Figure 4 for Figure 3 The structural schematic diagram of the third power head shown in;

[0023] Figure 5 for Figure 4 A cross-sectional view of the third power head shown;

[0024] Figure 6It is a structural schematic diagram of a telescopic elastic chuck;

[0025] Figure 7 for Figure 6 A cross-sectional view of the telescopic elastic collet shown;

[0026] Figure 8 for Figure 6 An isometric view of the telescopic collet shown;

[0027] Fig. 9 is a schematic structural diagram of a second drill bit;

[0028] Fig.10 It is a structural schematic diagram of a deburring drill bit;

[0029] Fig.11 for Figure 3 Schematic diagram of a partial enlarged view;

[0030] Fig.12 This is a schematic diagram of a small valve seat being fixed by a clamp;

[0031] Fig.13 for Fig.12 Axonometric view of

[0032] Fig.14 Schematic diagram of burr removal by deburring drill;

[0033] Fig.15 A schematic structural diagram of another non-coaxial intersecting hole deburring device provided by an embodiment of the present invention;

[0034] Fig.16 This is a schematic diagram of the installation of the second power head and the third power head.

[0035] In the figure:

[0036] 10. First power head; 11. First drill bit; 20. Second power head; 21. Second drill bit; 30. Third power head; 31. Deburring drill bit; 32. Telescopic elastic chuck; 33. Spring; 34. Pin; 35. Long round hole; 40. Clamp; 41. Base; 42. Lower chuck; 43. Upper chuck; 50. Lifting cylinder; 61. First Z-axis platform; 62. Second Z-axis platform; 71. Machine body; 72. Rotating motor; 73. Servo feed motor; 74. Spindle; 80. Rotating bracket; 81. Rotating shaft; 90. Floating joint; 100. Small valve seat; 101. Small hole; 102. Large hole. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below mainly by taking the small valve seat inside the pilot valve on the four-way reversing valve as an example in combination with the accompanying drawings and specific implementation methods.

[0038] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0039] A typical four-way reversing valve usually has a main valve and a pilot valve, which is located in a refrigerant circuit composed of a compressor, a condenser, an indoor heat exchanger and an outdoor heat exchanger. When working, the refrigerant circuit is switched in direction through the main valve, thereby switching between cooling and heating.

[0040] In order to realize the switching function, a small valve seat 100 is provided inside the pilot valve. One side of the small valve seat 100 is an arc surface and the other side is a plane. Three large holes 102 are provided on the arc surface side to connect the main valve pipeline, and three small holes 101 are processed on the plane side to form a kinematic pair with the sliding bowl. The on and off states of the three small holes 101 are controlled by the lateral movement of the sliding bowl (Note: small holes and large holes in this article are relative concepts, and therefore are not ambiguous terms).

[0041] Since the three small holes 101 are close to each other and located in the same straight line, and the three large holes 102 are far away and distributed in a herringbone shape, each large hole 102 and the corresponding small hole 101 form a non-coaxial cross hole, and the three groups of small holes 101 and large holes 102 constitute three stepped through holes in total.

[0042] Please refer to Figure 3 , Figure 3 A schematic structural diagram of a non-coaxial cross hole deburring device provided in an embodiment of the present invention.

[0043] As shown in the figure, in a specific embodiment, the non-axial intersecting hole deburring equipment provided by the present invention is provided with three power heads, namely a first power head 10, a second power head 20 and a third power head 30, wherein the first power head 10 is used to process a small hole 101 (i.e., the first hole) on the workpiece through a first drill bit 11, the second power head 20 is used to process a large hole 102 (i.e., the second hole) intersecting the small hole 101 on the workpiece through a second drill bit 21, and the third power head 30 is used to further remove burrs along the large hole 102 after the first power head 10 removes burrs along the small hole 101 through the first drill bit 11.

[0044] When used for machining a small valve seat inside a pilot valve of a four-way reversing valve, the first power head 10 is located on one side of the fixture 40 , and the second power head 20 and the third power head 30 are arranged side by side and located on the other side of the fixture 40 .

[0045] Specifically, the first power head 10 is installed on the first Z-direction slide rail (not shown in the figure) through the first Z-direction platform 61, and can move along the first Z-direction slide rail so as to process three small holes 101 in sequence according to a set order. The second power head 20 and the third power head 30 are respectively installed on the second Z-direction platform 62 through a rotating mechanism.

[0046] like Fig.16 As shown, the rotating mechanism is mainly composed of a lifting cylinder 50 and a rotating bracket 80. One side of the second power head 20 and the third power head 30 are respectively installed on the corresponding rotating bracket 80 through a rotating shaft 81. The two lifting cylinders 50 are respectively located below the other side of the second power head 20 and the third power head 30, and are connected to the corresponding second power head 20 and the third power head 30 through a floating joint 90. In this embodiment, the rotating mechanisms of the second power head 20 and the third power head 30 are in a mirror-symmetrical relationship.

[0047] When processing the large hole in the middle or deburring the large hole in the middle, under the drive of the lifting cylinder 50, the second power head 20 and the third power head 30 can respectively rotate a certain angle around their respective rotating shafts 81, so that the drill bit reaches the set position, and the second Z-axis platform 62 is installed on the second Z-axis slide rail. The second power head 20 and the third power head 30 can rotate and move along the second Z-axis slide rail so as to process the three large holes 102 in sequence according to the set order.

[0048] Of course, in addition to the rotation method, the second power head 20 and the third power head 30 can also be moved in the Y direction first and then in the Z direction, or in the Z direction first and then in the Y direction to move to the position for processing the middle large hole.

[0049] Please refer to Figures 4 to 8 , Figure 4 for Figure 3 The structural schematic diagram of the third power head shown in; Figure 5 for Figure 4 A cross-sectional view of the third power head shown; Figure 6 It is a structural schematic diagram of a telescopic elastic chuck; Figure 7 for Figure 6 A cross-sectional view of the telescopic elastic collet shown; Figure 8 for Figure 6 Axonometric view of the telescopic collet shown.

[0050] As shown in the figure, the first power head 10 and the second power head 20 have the same structure, and are both provided with a body 71, a rotating motor 72, a servo feed motor 73, a spindle 74, a chuck for clamping a drill bit, and a drill bit, and can realize the functions of movement and servo feeding, wherein the first power head 10 is installed with a first drill bit 11, and the second power head 20 is installed with a second drill bit 21, and the radial dimension of the second drill bit 21 is larger than that of the first drill bit 11.

[0051] The structure of the third power head 30 is similar to that of the first power head 10 and the second power head 20 , except that the chuck of the third power head 30 is a telescopic elastic chuck 32 , and the drill bit thereof is a deburring drill bit 31 .

[0052] The front end of the third power head 30 is provided with an inner cavity for installing the telescopic elastic clamp 32, and the tail end of the telescopic elastic clamp 32 extends into the inner cavity. The inner cavity is provided with a spring 33 for supporting the telescopic elastic clamp 32, and the pin 34 passes through the side wall of the inner cavity and the telescopic elastic clamp 32 at the same time. The telescopic elastic clamp 32 is provided with a radially through-going oblong hole 35 to facilitate the passage of the pin 34.

[0053] In this way, when the deburring drill bit 31 extends to the bottom of the hole, under the action of pressure, the telescopic elastic chuck 32 can compress the spring 33 and retract inward by a certain distance. After the pressure disappears, the telescopic elastic chuck 32 can extend outward under the elastic force of the spring 33. In this process, the telescopic elastic chuck 32 slides with the pin shaft 24 through the oblong hole 35, thereby realizing the telescopic function.

[0054] Please continue to refer to Fig. 9 , Fig.10 , Fig. 9 is a schematic structural diagram of a second drill bit; Fig.10 It is a schematic diagram of the structure of a deburring drill bit.

[0055] As shown in the figure, the spiral groove direction of the deburring drill bit 31 is opposite to the spiral groove direction of the second drill bit 21, and the third power head 30 drives the deburring drill bit 31 to rotate in the opposite direction when removing burrs.

[0056] Furthermore, in order to reliably remove burrs, the back angle of the deburring drill bit 31 is controlled between 0° and 8°, and the diameter of the deburring drill bit 31 is smaller than the diameter of the second drill bit 21, that is, D 去 <D2, and the vertex angle of the deburring drill bit 31 is equal to the vertex angle of the second drill bit 21, that is, A 去 =A2.

[0057] If D 去 = D2, the deburring drill bit 31 cannot reliably enter the bottom of the large hole 102, and the original hole size cannot be guaranteed. 去≠A2, when the drill reaches the bottom of the large hole 102, its cutting edge cannot produce an ideal cutting effect on the burr.

[0058] Please refer to Fig.11 , Fig.12 , Fig.13 , Fig.11 for Figure 3 Schematic diagram of a partial enlarged view; Fig.12 This is a schematic diagram of a small valve seat being fixed by a clamp; Fig.13 for Fig.12 Axonometric view of .

[0059] As shown in the figure, the small valve seat 100 is clamped and immovable during processing. The clamp 40 for clamping the small valve seat 100 includes a base 41, a lower clamp 42 and an upper clamp 43. The lower clamp 42 is installed on the base 41, and the upper clamp 43 is located above the lower clamp 42.

[0060] The bottom surface of the upper clamp 43 and the top surface of the lower clamp 42 are both provided with grooves, and the grooves match the shapes of the upper edge and the lower edge of the small valve seat 100 when placed horizontally.

[0061] During processing, the small valve seat 100 is clamped and fixed in a horizontal posture by the upper clamp 43 and the lower joint 42, and then the small hole 101 and the large hole 102 are processed from both sides by the first power head 10 and the second power head 20 respectively, and then the first power head 10 and the third power head 30 respectively remove burrs from both sides.

[0062] When the above deburring device is used to remove burrs in the workpiece hole, the following steps are included:

[0063] Using the first power head 10 to machine a first hole on the workpiece through the first drill bit 11;

[0064] A second power head 20 is used to machine a second hole on the workpiece through a second drill bit 21, wherein the second hole intersects the first hole and has a larger hole diameter than the first hole;

[0065] Using the first power head 10 to remove burrs along the first hole through the first drill bit 11;

[0066] The third power head 30 is used to remove burrs along the second hole using the deburring drill bit 21 .

[0067] Furthermore, if it is used to process a small valve seat inside a four-way reversing valve pilot valve, the following process flow is included:

[0068] The first power head 10 uses the first drill bit 11 to process the first small hole on the small valve seat 100, and then withdraws after completion;

[0069] The first power head 10 moves in the Z direction, and the first power head 10 processes the second small hole on the small valve seat 100 through the first drill bit 11, and the second power head 20 processes the first large hole synchronously through the second drill bit 21, and then exits after completion;

[0070] The first power head 10 moves in the Z direction, and the second power head 20 moves or rotates in the Y direction and the Z direction. The first power head 10 processes the third small hole on the small valve seat 100 through the first drill bit 11, and the second power head 20 processes the second large hole synchronously through the second drill bit 21, and then exits after completion;

[0071] The first power head 10 moves in the Z direction, and the second power head 20 moves in the Y direction and the Z direction or rotates in the opposite direction and then moves in the Z direction. The first power head 10 deburrs the first small hole through the first drill bit 11, and the second power head 20 synchronously processes the third large hole through the second drill bit 21, and then exits after completion;

[0072] The first power head 10 moves in the Z direction, deburrs the second small hole through the first drill bit 11, and then withdraws after completion;

[0073] The first power head 10 moves in the Z direction, deburrs the third small hole through the first drill bit 11, and then withdraws after completion;

[0074] The third power head 30 moves in the Z direction, deburrs the first large hole with the deburring drill bit 31, and then exits after completion;

[0075] The third power head 30 moves or rotates along the Y direction and the Z direction, deburrs the second large hole through the deburring drill bit 31, and then exits after completion;

[0076] The third power head 30 moves along the Y direction and the Z direction or rotates in the opposite direction and then moves along the Z direction, deburring the third large hole with the deburring drill bit 31 and then withdraws after completion.

[0077] The working principle of the above-mentioned non-axial cross hole deburring equipment and method is as follows:

[0078] When processing the non-coaxial cross holes of the small valve seat, taking one group of small holes 101 and large holes 102 as an example, when processing the small hole 101, since the inside is solid, no burrs will be generated inside. However, when processing the large hole 102, the large hole 102 and the small hole 101 will intersect, and the drill bit will press the burrs into the small hole 101 during cutting.

[0079] In this regard, after the small hole 101 is processed, the first drill 11 is made to enter the small hole 101 again, and the burrs are turned into the large hole 102 by feeding the first drill 11. After the burrs are turned into the large hole 102, they are concentrated on the three hole intersection lines circled in the figure (see Fig.14), and the burr position has a certain pattern, and the three arrows are the drilling rotation direction.

[0080] The third power head 30 of the present embodiment clamps the deburring drill bit 31 through the telescopic elastic chuck 32, and rotates under the drive of the rotary motor. After the servo feed is fed to the bottom of the large hole 102 of the small valve seat, the front end of the deburring drill bit 31 is tightly attached to the bottom surface of the large hole 102 because the small valve seat 100 is fixed and cannot be fed any further. Under the action of the servo feed, the telescopic elastic chuck 32 is compressed to the set position, and the burrs on the bottom of the large hole 102 are simultaneously cut off to achieve the purpose of removing burrs. In this process, the burrs in the large hole 102 will not be pressed into the small hole 101 by the deburring drill bit 31, thereby ensuring that no burrs will remain in both the small hole 101 and the large hole 102.

[0081] During processing, the rotary motor rotates in the opposite direction, and the servo feeds to the bottom according to the original trajectory of the large hole 102 to be processed, and compresses the telescopic elastic chuck 32 but does not press it into place. During the feeding process, the deburring drill 31 squeezes and cuts the burrs to remove the burrs without affecting the size accuracy of the original hole. After completion, the servo exits, and then moves the third power head 30 to process the next large hole 102 until the three holes are deburred.

[0082] If the spiral groove direction of the deburring drill 31 is the same as that of the large hole processing drill, the burr will be flipped back to the small hole 101 during processing.

[0083] Please refer to Fig.15 , Fig.15 A schematic structural diagram of another non-coaxial cross hole deburring device provided in an embodiment of the present invention.

[0084] To achieve the above-mentioned purpose, the present invention provides another non-coaxial cross hole deburring device, which is provided with a first power head 10, a second power head 20 and a third power head 30. The first power head 10 is used to process a small hole 101 (i.e., the first hole) on the workpiece through a first drill bit 11, the second power head 20 is used to process a large hole (i.e., the second hole) on the workpiece through a second drill bit 21, and the third power head 30 is used to remove burrs along the small hole 101 through a deburring drill bit 31.

[0085] When used for machining the small valve seat 100 inside the pilot valve of the four-way reversing valve, the first power head 10 and the third power head 30 are arranged side by side and located on one side of the fixture 40 , and the second power head 20 is located on the other side of the fixture 40 .

[0086] Specifically, the first power head 10 is installed on the first Z-axis platform 61, and the first Z-axis platform 61 is installed on the first Z-axis slide rail (not shown in the figure), and can move along the first Z-axis slide rail so as to process the three small holes 101 in sequence according to a set order. The third power head 30 is also installed on the first Z-axis platform 61, and can move along the first Z-axis slide rail so as to deburr the three small holes 101 in sequence according to a set order.

[0087] Similar to the first embodiment, the second power head 20 is mounted on the second Z-direction platform 62 via a rotating mechanism, and the second Z-direction platform 62 is mounted on the second Z-direction slide rail. The second power head 20 can rotate and move in the Z direction so as to process the three large holes 102 in sequence according to a set order.

[0088] The third power head 30 is provided with a telescopic elastic chuck 32 and a deburring drill bit 31 installed on the telescopic elastic chuck. The spiral groove direction of the deburring drill bit 31 is opposite to the spiral groove direction of the first drill bit 11, and the third power head 30 drives the deburring drill bit 31 to rotate in the opposite direction when removing burrs.

[0089] In order to reliably remove burrs, the back angle of the deburring drill bit 31 is controlled between 0° and 8°, and the diameter of the deburring drill bit 31 is smaller than the diameter of the first drill bit 11, that is, D 去 <D1, and the vertex angle of the deburring drill bit 31 is equal to the vertex angle of the first drill bit 11, that is, A 去 =A1.

[0090] If D 去 = D1, the deburring drill bit 31 cannot reliably enter the bottom of the small hole 101, and the original hole size cannot be guaranteed. 去 ≠A1, when the drill reaches the bottom of the small hole 101, its cutting edge cannot produce an ideal cutting effect on the burr.

[0091] The structure of the clamp and the power head in this embodiment is basically the same as that in the first embodiment. Please refer to the above description and it will not be repeated here.

[0092] When the above deburring device is used to remove burrs in the workpiece hole, the following steps are included:

[0093] Using the first power head 10 to machine a first hole on the workpiece through the first drill bit 11;

[0094] A second power head 20 is used to machine a second hole on the workpiece through a second drill bit 21, wherein the second hole intersects the first hole and has a larger hole diameter than the first hole;

[0095] The third power head 30 is used to remove burrs along the first hole using the deburring drill bit 31 .

[0096] Furthermore, if it is used to process a small valve seat inside a four-way reversing valve pilot valve, the following process flow is included:

[0097] The first power head 10 uses the first drill bit 11 to process the first small hole on the small valve seat 100, and then withdraws after completion;

[0098] The first power head 10 moves in the Z direction, and the first power head 10 processes the second small hole on the small valve seat 100 through the first drill bit 11, and the second power head 20 processes the first large hole synchronously through the second drill bit 21, and then exits after completion;

[0099] The first power head 10 moves in the Z direction, and the second power head 20 moves or rotates in the Y direction and the Z direction. The first power head 10 processes the third small hole on the small valve seat 100 through the first drill bit 11, and the second power head 20 processes the second large hole synchronously through the second drill bit 21, and then exits after completion;

[0100] The second power head 20 moves along the Y direction and the Z direction or rotates in the opposite direction and then moves along the Z direction, and the second drill bit 21 processes the third large hole synchronously, and then exits after completion;

[0101] The third power head 30 moves in the Z direction, deburrs the first small hole with the deburring drill bit 31, and then exits after completion;

[0102] The third power head 30 moves in the Z direction, deburrs the second small hole with the deburring drill bit 31, and then exits after completion;

[0103] The third power head 30 moves in the Z direction, deburrs the third small hole with the deburring drill bit 31 , and withdraws after completion.

[0104] Similarly, in this embodiment, when deburring is performed, the third power head 30 clamps the deburring drill bit 31 through the telescopic elastic chuck 32 to deburr the small hole 101 (that is, the first hole). The spiral groove direction of the deburring drill bit 31 is opposite to the processing drill direction of the small hole 101. It rotates under the drive of the rotating motor. After the servo feed reaches the bottom of the small hole 101, the top of the deburring drill bit is close to the bottom surface of the small hole 101 because the workpiece is fixed and cannot be fed any further. Under the action of the servo feed, the telescopic elastic chuck 32 is compressed to the set position, and the burrs at the bottom of the small hole 101 are simultaneously cut to achieve the purpose of removing the burrs. In this process, the burrs in the small hole 101 will not be pressed into the large hole 102 (that is, the second hole) by the deburring drill bit 31, thereby ensuring that no burrs will remain in the first hole 101 and the second hole 102.

[0105] The present invention can completely remove burrs in different axis intersection holes, is suitable for automated processing promotion and application, and can significantly improve production efficiency and reduce costs.

[0106] The above is a detailed introduction to the burr removal device and method for different axis cross holes provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A burr removal device for non-coaxial intersecting holes, comprising a first power head (10) and a second power head (20), wherein the first power head (10) is used to process a first hole on a workpiece through a first drill bit (11), and the second power head (20) is used to process a second hole on the workpiece that intersects the first hole and has a larger hole diameter than the first hole through a second drill bit (21), characterized in that: The invention also comprises a third power head (30), wherein the third power head (30) is used to remove burrs along the second hole after the first power head (10) removes burrs along the first hole through the first drill bit (11); the third power head (30) is provided with a telescopic elastic chuck (32) and a deburring drill bit (31) mounted on the telescopic elastic chuck (32); the spiral groove direction of the deburring drill bit (31) is opposite to the spiral groove direction of the second drill bit (21); and the third power head (30) can drive the deburring drill bit (31) to rotate in the opposite direction when removing burrs.

2. The deburring equipment for non-coaxial intersecting holes according to claim 1 is characterized in that: It also includes a workpiece clamp (40), wherein the first power head (10) is located on one side of the clamp (40), and the second power head (20) and the third power head (30) are arranged side by side and are located on the other side of the clamp (40).

3. The deburring equipment for non-coaxial intersecting holes according to claim 2 is characterized in that: The first power head (10) is mounted on a first Z-direction platform (61), the first Z-direction platform (61) is mounted on a first Z-direction slide rail, the second power head (20) and the third power head (30) are respectively mounted on a second Z-direction platform (62) via a rotating mechanism, and the second Z-direction platform (62) is mounted on a second Z-direction slide rail.

4. The deburring equipment for non-coaxial intersecting holes according to claim 3 is characterized in that: The rotating mechanisms of the second power head (20) and the third power head (30) respectively include a lifting cylinder (50) and a rotating bracket (80); one side of the second power head (20) and the third power head (30) are respectively installed on the corresponding rotating bracket (80) through a rotating shaft (81); the lifting cylinder (50) is respectively located below the other side of the second power head (20) and the third power head (30), and is connected to the corresponding second power head (20) and the third power head (30) through a floating joint (90).

5. The deburring equipment for non-coaxial intersecting holes according to claim 1, characterized in that: The back angle of the deburring drill bit (31) is between 0° and 8°.

6. The deburring equipment for non-coaxial intersecting holes according to claim 1, characterized in that: The diameter of the deburring drill bit (31) is smaller than the diameter of the second drill bit (21), and the vertex angle of the deburring drill bit (31) is equal to the vertex angle of the second drill bit (21).

7. Methods for removing burrs from intersecting holes of different axes, including: Using a first power head (10) to machine a first hole on a workpiece through a first drill bit (11); Using a second power head (20) to machine a second hole on the workpiece through a second drill bit (21), the second hole intersecting the first hole and having a larger hole diameter than the first hole; Using a first power head (10) to remove burrs along the first hole through a first drill bit (11); A third power head (30) is used to remove burrs along the second hole through a deburring drill bit (31); the third power head (30) is configured to mount the deburring drill bit (31) through a telescopic elastic chuck (32) and drive the deburring drill bit (31) to rotate in the opposite direction when removing burrs; the deburring drill bit (31) is configured so that the direction of the spiral groove is opposite to the direction of the spiral groove of the second drill bit (21).

8. The method for removing burrs from non-coaxial intersecting holes according to claim 7, characterized in that: A small valve seat (100) for machining the interior of a pilot valve of a four-way reversing valve comprises: The first power head (10) uses the first drill bit (11) to machine a first small hole on the small valve seat (100), and then withdraws after completion; The first power head (10) moves in the Z direction, and the first power head (10) uses the first drill bit (11) to process the second small hole on the small valve seat (100), and the second power head (20) uses the second drill bit (21) to process the first large hole synchronously, and then withdraws after completion; The first power head (10) moves in the Z direction, and the second power head (20) moves or rotates in the Y direction and the Z direction. The first power head (10) uses the first drill bit (11) to process the third small hole on the small valve seat (100), and the second power head (20) uses the second drill bit (21) to process the second large hole synchronously, and then exits after completion; The first power head (10) moves in the Z direction, and the second power head (20) moves in the Y direction and the Z direction or rotates in the opposite direction and then moves in the Z direction. The first power head (10) deburrs the first small hole through the first drill bit (11), and the second power head (20) simultaneously processes the third large hole through the second drill bit (21), and then exits after completion; The first power head (10) moves in the Z direction, deburrs the second small hole through the first drill bit (11), and withdraws after completion; The first power head (10) moves in the Z direction, deburrs the third small hole through the first drill bit (11), and withdraws after completion; The third power head (30) moves in the Z direction, deburrs the first large hole using the deburring drill bit (31), and then withdraws after completion; The third power head (30) moves along the Y direction and the Z direction or rotates to deburr the second large hole using the deburring drill bit (31), and then withdraws after completion; The third power head (30) moves along the Y direction and the Z direction or rotates in the opposite direction and then moves along the Z direction, deburring the third large hole using the deburring drill bit (31), and then withdraws after completion.

9. A non-coaxial intersecting hole deburring device, comprising a first power head (10) and a second power head (20), wherein the first power head (10) is used to process a first hole on a workpiece through a first drill bit (11), and the second power head (20) is used to process a second hole on the workpiece that intersects the first hole and has a larger hole diameter than the first hole through a second drill bit (21), characterized in that: The invention also comprises a third power head (30), wherein the third power head (30) is used for removing burrs along the first hole, and the third power head (30) is provided with a telescopic elastic chuck (32) and a deburring drill bit (31) mounted on the telescopic elastic chuck (32), wherein the spiral groove direction of the deburring drill bit (31) is opposite to the spiral groove direction of the first drill bit (11), and the third power head (30) can drive the deburring drill bit (31) to rotate in the opposite direction when removing burrs.

10. The deburring equipment for non-coaxial intersecting holes according to claim 9, characterized in that: It also includes a workpiece clamp (40), wherein the first power head (10) and the third power head (30) are arranged side by side and located on one side of the clamp (40), and the second power head (20) is located on the other side of the clamp (40).

11. The deburring device for non-coaxial intersecting holes according to claim 10, characterized in that: The first power head (10) and the third power head (30) are installed on a first Z-direction platform (61), the first Z-direction platform (61) is installed on a first Z-direction slide rail, the second power head (20) is installed on a second Z-direction platform (62) via a lifting mechanism, and the second Z-direction platform (62) is installed on a second Z-direction slide rail.

12. The deburring device for non-coaxial intersecting holes according to claim 11, characterized in that: The rotating mechanism of the second power head (20) includes a lifting cylinder (50) and a rotating bracket (80), one side of the second power head (20) is installed on the rotating bracket (80) through a rotating shaft (81), and the lifting cylinder (50) is located below the other side of the second power head (20) and is connected to the second power head (20) through a floating joint (90).

13. The deburring device for non-coaxial intersecting holes according to claim 9, characterized in that: The back angle of the deburring drill bit (31) is between 0° and 8°.

14. The deburring device for non-coaxial intersecting holes according to claim 9, characterized in that: The diameter of the deburring drill bit (31) is smaller than the diameter of the first drill bit (11), and the vertex angle of the deburring drill bit (31) is equal to the vertex angle of the first drill bit (11).

15. Methods for removing burrs from intersecting holes of different axes, including: Using a first power head (10) to machine a first hole on a workpiece through a first drill bit (11); Using a second power head (20) to machine a second hole on the workpiece through a second drill bit (21), the second hole intersecting the first hole and having a larger hole diameter than the first hole; A third power head (30) is used to remove burrs along the first hole through a deburring drill bit (31); the third power head (30) is configured to mount the deburring drill bit (31) through a telescopic elastic chuck (32) and drive the deburring drill bit (31) to rotate in the opposite direction when removing burrs; the deburring drill bit (31) is configured so that the direction of the spiral groove is opposite to that of the first drill bit (11).

16. The method for removing burrs from non-coaxial intersecting holes according to claim 15, characterized in that: A small valve seat (100) for machining the interior of a pilot valve of a four-way reversing valve comprises: The first power head (10) uses the first drill bit (11) to machine a first small hole on the small valve seat (100), and then withdraws after completion; The first power head (10) moves in the Z direction, and the first power head (10) uses the first drill bit (11) to process the second small hole on the small valve seat (100), and the second power head (20) uses the second drill bit (21) to process the first large hole synchronously, and then withdraws after completion; The first power head (10) moves in the Z direction, and the second power head (20) moves or rotates in the Y direction and the Z direction. The first power head (10) uses the first drill bit (11) to process the third small hole on the small valve seat (100), and the second power head (20) uses the second drill bit (21) to process the second large hole synchronously, and then exits after completion; The second power head (20) moves along the Y direction and the Z direction or rotates in the opposite direction and then moves along the Z direction, and the second drill bit (21) is used to synchronously process the third large hole, and then exits after completion; The third power head (30) moves in the Z direction, deburrs the first small hole using the deburring drill bit (31), and then withdraws after completion; The third power head (30) moves in the Z direction, deburrs the second small hole using the deburring drill bit (31), and then withdraws after completion; The third power head (30) moves in the Z direction, deburrs the third small hole using the deburring drill bit (31), and withdraws after completion.

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