Guide sleeve assembly and CNC drilling machine

Abstract

This application discloses a guide sleeve assembly and a CNC drilling machine. The guide sleeve assembly is applied to a CNC drilling machine, where the drill gun is used to drill holes on the inclined surface of a workpiece. The guide sleeve assembly includes a positioning module and a guide sleeve. The positioning module includes a positioning ring and a first limiting part; the positioning ring is used to connect with the fixed end of the U-shaped guide sleeve of the CNC drilling machine; the first limiting part is disposed on the positioning ring. The guide sleeve is detachably assembled to the positioning ring. The guide sleeve has a guide hole extending through it along its axial direction. The guide sleeve also has a first surface and a second surface arranged opposite to each other along its axial direction. The second surface is an inclined surface, and the outer circumferential surface of the guide sleeve is provided with a second limiting part. When the guide sleeve is assembled to the positioning ring, the second limiting part cooperates with the first limiting part to restrict the rotation of the guide sleeve relative to the positioning ring; when the CNC drilling machine performs drilling operations, the drill gun of the CNC drilling machine passes through the guide hole, and the second surface is used to fit against the inclined surface of the workpiece.

Description

Technical Field

[0001] This application relates to the field of CNC drilling machine technology, and in particular to a guide sleeve assembly and a CNC drilling machine. Background Technology

[0002] In the field of deep hole machining, the drill guns used by CNC drilling machines have a relatively large length-to-diameter ratio (that is, the ratio of the length dimension of the drill gun to the radial dimension of the drill gun). Therefore, when the drill gun of the CNC drilling machine is performing drilling operations, it is often necessary to use a guide sleeve to guide and position the drill gun, prevent the drill gun of the CNC drilling machine from deviating, and improve the machining accuracy of the CNC drilling machine.

[0003] Due to the diverse structures of workpieces, the surface to be machined may not be parallel to the horizontal plane. Currently, guide sleeves for guiding and positioning the drill gun are typically used in scenarios where the surface to be machined is parallel to the horizontal plane, but not in scenarios where the surface to be machined is not parallel to the horizontal plane. Therefore, it is necessary to design a novel guide sleeve assembly that can be applied to scenarios where the surface to be machined is not parallel to the horizontal plane. Utility Model Content

[0004] This application provides a guide sleeve assembly and a CNC drilling machine, which can solve the problem in related technologies that the guide sleeve for guiding and positioning the drill gun cannot be used in operation scenarios where the surface to be processed is not parallel to the horizontal plane.

[0005] In a first aspect, embodiments of this application provide a guide sleeve assembly; the guide sleeve assembly is applied to a CNC drilling machine, the drilling gun of the CNC drilling machine is used to drill holes on the inclined surface to be processed of the workpiece, the guide sleeve assembly includes a positioning module and a guide sleeve, the positioning module includes a positioning ring and a first limiting part, the positioning ring is used to connect with the fixed end of the U-shaped guide sleeve of the CNC drilling machine, the first limiting part is disposed on the positioning ring, the guide sleeve is detachably assembled to the positioning ring, the guide sleeve has a guide hole through it along its axial direction, the guide sleeve also has a first surface and a second surface disposed opposite to each other along its axial direction, the second surface is an inclined surface, the outer peripheral surface of the guide sleeve is provided with a second limiting part, when the guide sleeve is assembled to the positioning ring, the second limiting part cooperates with the first limiting part to restrict the rotation of the guide sleeve relative to the positioning ring, when the CNC drilling machine performs drilling operation, the drilling gun of the CNC drilling machine passes through the guide hole, and the second surface is used to fit against the inclined surface to be processed of the workpiece.

[0006] Secondly, embodiments of this application provide a CNC drilling machine; the CNC drilling machine includes the aforementioned guide sleeve assembly.

[0007] Based on the guide sleeve assembly and CNC drilling machine of the present application embodiments, by designing the second surface of the guide sleeve as an inclined surface adapted to the inclined surface to be machined on the workpiece, when the drill gun of the CNC drilling machine performs drilling operations, the second surface of the guide sleeve fits against the inclined surface to be machined on the workpiece, so that the outlet of the guide sleeve is extended to the inclined surface to be machined on the workpiece, completely eliminating the potential sway space of the drill gun in the overhang section between the guide sleeve and the workpiece, improving the machining accuracy of the CNC drilling machine. In this way, the guide sleeve can guide and position the drill gun in a working scenario where the surface to be machined is not parallel to the horizontal plane. By designing a first limiting part on the positioning ring and a second limiting part that cooperates with the first limiting part on the outer circumferential surface of the guide sleeve, the guide sleeve is assembled after the positioning ring, restricting the rotation of the guide sleeve relative to the positioning ring. This ensures that when the CNC drilling machine's drill gun performs drilling operations, the guide sleeve will not rotate relative to the positioning ring under the action of the CNC drilling machine's drill gun. This ensures that the second surface of the guide sleeve is always in contact with the inclined surface to be processed on the workpiece, guaranteeing the machining accuracy of the CNC drilling machine and preventing the guide sleeve from wearing the inclined surface to be processed on the workpiece due to rotation. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a perspective view of a guide sleeve assembly installed on the fixed end of a U-shaped guide sleeve on a CNC drilling machine according to one embodiment of this application.

[0010] Figure 2 This is a perspective view of the guide sleeve assembly in one embodiment of this application;

[0011] Figure 3 for Figure 2 Exploded view of the guide sleeve assembly;

[0012] Figure 4 for Figure 2 A bottom view of the guide sleeve assembly in the middle;

[0013] Figure 5 This is a cross-sectional view of the guide sleeve assembly in one embodiment of this application;

[0014] Figure 6 This is a cross-sectional view of a guide sleeve assembly in which the drill gun of a CNC drilling machine passes through the guide hole of the guide sleeve in one embodiment of this application.

[0015] Figure 7This is a partial cross-sectional view of a guide sleeve assembly being held on a tool holder of a CNC drilling machine's tool magazine in one embodiment of this application.

[0016] Reference numerals: 1. Guide sleeve assembly; 11. Positioning module; 111. Positioning ring; 111a. Inner annular surface; 111b. Fixing hole; 111c. Mounting hole; 112. First limiting part; 1121. Limiting block; 1121a. Through hole; 113. Elastic retaining body; 114. Fixing element; 12. Guide sleeve; 12a. Guide hole; 12a1. First guide hole; 12a2. Second guide hole; 12b. First surface; 12 c. Second surface; 12d. Second limiting part; 12d1. Limiting groove; 12e. Locking groove; 12f. Positioning groove; 121. Sleeve body; 1211. First part; 1212. Second part; 1213. Third part; 122. Insert; 2. Drill gun; 3. Workpiece to be processed; 3a. Inclined surface to be processed; 4. U-shaped guide sleeve fixing end; 5. Tool magazine; 51. Tool disc; 52. Tool holder; 53. Positioning block; OO'. Axial direction. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0018] Please see Figures 1-6 In a first aspect, this application provides a guide sleeve assembly 1, which is suitable for CNC drilling machines, and particularly suitable for vertical deep hole drilling machines. The guide sleeve assembly 1 provided in this application cooperates with the drill gun 2 of the CNC drilling machine so that the drill gun 2 of the CNC drilling machine can be specifically used for drilling workpieces 3 whose surfaces are inclined.

[0019] The following combination Figures 1-7 The specific structure of guide sleeve assembly 1 will be described in detail.

[0020] like Figures 1-6 As shown, the guide sleeve assembly 1 includes a positioning module 11 and a guide sleeve 12.

[0021] The positioning module 11 serves as an intermediate structure between the guide sleeve 12 and the U-shaped guide sleeve fixed end 4 of the CNC drilling machine. The guide sleeve 12 is connected to the U-shaped guide sleeve fixed end 4 of the CNC drilling machine via the positioning module 11.

[0022] The positioning module 11 includes a positioning ring 111.

[0023] The positioning ring 111 is used to connect with the U-shaped guide sleeve fixed end 4 of the CNC drilling machine. The specific connection method between the positioning ring 111 and the U-shaped guide sleeve fixed end 4 of the CNC drilling machine is not limited here. Designers can make reasonable designs according to actual needs. For example, the positioning ring 111 can be detachably fixedly connected to the U-shaped guide sleeve fixed end 4 of the CNC drilling machine by at least one of the following methods: screw connection, snap connection or plug connection. This makes it convenient to replace the positioning ring 111 with different hole diameters or the damaged positioning ring 111 in the future.

[0024] The guide sleeve 12 is detachably assembled to the positioning ring 111. For example, the outer peripheral surface of the guide sleeve 12 (specifically the first part 1211 described below) is provided with a locking groove 12e, the inner annular surface 111a of the positioning ring 111 is provided with multiple mounting holes 111c, and the positioning module 11 also includes multiple elastic retaining bodies 113. The multiple elastic retaining bodies 113 are correspondingly arranged in the multiple mounting holes 111c, and the end of each elastic retaining body 113 protrudes from the inner annular surface 111a of the positioning ring 111. The elastic retaining body 113 has a certain elastic force, and the end of the elastic retaining body 113 protruding from the inner annular surface 111a of the positioning ring 111 can undergo elastic displacement along the axial direction OO' of the mounting hole 111c. When the external force acting on the end of the elastic retaining body 113 is less than the elastic force, the end of the elastic retaining body 113 moves outward from the mounting hole 111c and protrudes from the inner annular surface 111a of the positioning ring 111, engaging with the locking groove 12e on the outer circumferential surface of the guide sleeve 12 to achieve a retaining effect, thus realizing the assembly between the guide sleeve 12 and the positioning ring 111. When the external force acting on the end of the elastic retaining body 113 is greater than the elastic force, the end of the elastic retaining body 113 moves inward from the mounting hole 111c and disengages from the locking groove 12e on the outer circumferential surface of the guide sleeve 12 to release the retaining effect, thus realizing the disassembly between the guide sleeve 12 and the positioning ring 111. The elastic retaining body 113 can be a glass ball screw.

[0025] The guide sleeve 12 has a guide hole 12a extending through it along its axial direction OO'. The guide hole 12a is used for the drill gun 2 of the CNC drilling machine to pass through. When the guide sleeve 12 is assembled with the positioning ring 111, and the positioning ring 111 is assembled with the U-shaped guide sleeve fixed end 4 of the CNC drilling machine, the axis of the guide hole 12a, the central axis of the guide sleeve 12, the central axis of the positioning ring 111, and the central axis of the spindle of the CNC drilling machine are all on the same straight line. The guide hole 12a can guide and position the drill gun 2 of the CNC drilling machine, preventing the drill gun 2 from deviating during drilling operations and improving the machining accuracy of the CNC drilling machine. At the same time, because the length-to-diameter ratio (i.e., the ratio of the length dimension to the radial dimension of the drill gun 2) of the CNC drilling machine is relatively large, the rigidity of this type of drill gun 2 is relatively poor. By designing the guide sleeve 12 to guide and position the drill gun 2, bending deformation or breakage of the drill gun 2 can be prevented during drilling operations.

[0026] The guide sleeve 12 also has a first surface 12b and a second surface 12c arranged opposite to each other along its axial direction OO', the second surface 12c being an inclined surface. When the drill gun 2 of the CNC drilling machine performs drilling operations, the drill gun 2 of the CNC drilling machine passes through the guide hole 12a, and the second surface 12c is used to fit against the inclined surface 3a to be machined on the workpiece 3. When the second surface 12c of the guide sleeve 12 fits against the inclined surface 3a to be machined on the workpiece 3, the outlet of the guide sleeve 12 is extended to the inclined surface 3a to be machined on the workpiece 3. At this time, the length of the overhang section of the drill gun 2 of the CNC drilling machine is almost zero, completely eliminating the potential wobble space of the overhang section of the drill gun 2 between the guide sleeve 12 and the workpiece 3, thereby improving the hole position accuracy.

[0027] It is understandable that after the guide sleeve 12 is assembled into the positioning ring 111, due to the large length-to-diameter ratio of the drill gun 2 of the CNC drilling machine and the very small gap between the drill gun 2 and the guide hole 12a of the guide sleeve 12, the drill gun 2 may come into contact with the guide hole 12a of the guide sleeve 12 during high-speed rotation. At this time, the guide sleeve 12 is subjected to force and rotates relative to the positioning ring 111. The rotation of the guide sleeve 12 relative to the positioning ring 111 will cause the second surface 12c of the guide sleeve 12 to misalign with the inclined surface 3a of the workpiece 3 to be processed, resulting in the guide sleeve 12 wearing the inclined surface 3a of the workpiece 3 to be processed. To avoid this situation, the design is as follows: Figures 2-6 As shown, the positioning module 11 also includes a first limiting part 112, and the outer peripheral surface of the guide sleeve 12 is provided with a second limiting part 12d.

[0028] When the guide sleeve 12 is assembled onto the positioning ring 111, the second limiting part 12d cooperates with the first limiting part 112 to restrict the rotation of the guide sleeve 12 relative to the positioning ring 111. The second limiting part 12d serves as a limiting structure for the guide sleeve 12 and cooperates with the first limiting part 112 of the positioning module 11 so that after the guide sleeve 12 is assembled onto the positioning ring 111, it restricts the rotation of the guide sleeve 12 relative to the positioning ring 111. This ensures that when the drill gun 2 of the CNC drilling machine performs drilling operations, the guide sleeve 12 will not rotate relative to the positioning ring 111 under the action of the drill gun 2 of the CNC drilling machine, thereby preventing the guide sleeve 12 from wearing the inclined surface 3a of the workpiece 3 to be processed.

[0029] The second limiting part 12d can be a virtual structure such as a limiting groove 12d1 formed on the guide sleeve 12 (specifically the first part 1211 described below). In this case, the first limiting part 112 is a limiting block 1121 provided on the positioning ring 111. When the guide sleeve 12 is assembled on the positioning ring 111, at least a portion of the limiting block 1121 is embedded in the limiting groove 12d1. The limiting block 1121 abuts against the groove wall of the limiting groove 12d1, thereby restricting the rotation of the guide sleeve 12 relative to the positioning ring 111. The second limiting part 12d can also be a physical structure such as a limiting block 1121 provided on the guide sleeve 12 (specifically the first part 1211 described below). In this case, the first limiting part 112 is a limiting groove 12d1 formed on the positioning ring 111. When the guide sleeve 12 is assembled on the positioning ring 111, at least a portion of the limiting block 1121 is embedded in the limiting groove 12d1. The groove wall surface of the limiting groove 12d1 abuts against the limiting block 1121, thereby restricting the rotation of the guide sleeve 12 relative to the positioning ring 111.

[0030] Based on the guide sleeve assembly 1 in this application embodiment, by designing the second surface 12c of the guide sleeve 12 as an inclined surface adapted to the inclined surface 3a of the workpiece 3 to be processed, when the drill gun 2 of the CNC drilling machine performs drilling operations, the second surface 12c of the guide sleeve 12 fits against the inclined surface 3a of the workpiece 3 to be processed, so that the outlet of the guide sleeve 12 is extended to the inclined surface 3a of the workpiece 3 to be processed, completely eliminating the potential wobble space of the drill gun 2 in the overhang section between the guide sleeve 12 and the workpiece 3 to be processed, improving the processing accuracy of the CNC drilling machine. In this way, the guiding and positioning of the drill gun 2 by the guide sleeve 12 can be applied to the working scenario of the workpiece 3 to be processed where the surface to be processed is not parallel to the horizontal plane. By designing a first limiting part 112 on the positioning ring 111 and a second limiting part 12d that cooperates with the first limiting part 112 on the outer circumferential surface of the guide sleeve 12, the guide sleeve 12 is assembled onto the positioning ring 111, thus restricting the rotation of the guide sleeve 12 relative to the positioning ring 111. This ensures that when the drill gun 2 of the CNC drilling machine performs drilling operations, the guide sleeve 12 will not rotate relative to the positioning ring 111 under the action of the drill gun 2 of the CNC drilling machine. This ensures that the second surface 12c of the guide sleeve 12 is always in contact with the inclined surface 3a of the workpiece 3 to be processed, thus ensuring the processing accuracy of the CNC drilling machine and preventing the guide sleeve 12 from wearing the inclined surface 3a of the workpiece 3 to be processed due to rotation.

[0031] In the embodiments of this application, such as Figures 2-4As shown, the first limiting part 112 is a limiting block 1121 fixedly connected to the positioning ring 111, and the second limiting part 12d is a limiting groove 12d1 provided on the outer peripheral surface of the guide sleeve 12. When the guide sleeve 12 is assembled with the positioning ring 111, at least a portion of the limiting block 1121 is embedded in the limiting groove 12d1. The limiting block 1121 abuts against the groove wall of the limiting groove 12d1 to restrict the rotation of the guide sleeve 12 relative to the positioning ring 111, ensuring that when the drill gun 2 of the CNC drilling machine performs drilling operations, the guide sleeve 12 will not rotate relative to the positioning ring 111 under the action of the drill gun 2 of the CNC drilling machine, thereby avoiding wear of the inclined surface 3a of the workpiece 3 to be processed by the guide sleeve 12.

[0032] In the embodiments of this application, such as Figures 2-4 As shown, the positioning ring 111 has a fixing hole 111b, and the limiting block 1121 has a through hole 1121a corresponding to the fixing hole 111b. The positioning module 11 also includes a fixing member 114, which passes through the through hole 1121a and connects to the fixing hole 111b, so as to detachably connect the limiting block 1121 to the positioning ring 111. By designing the fixing member 114, which passes through the through hole 1121a and connects to the fixing hole 111b, the relative position between the limiting block 1121 and the positioning ring 111 can be fixed. The limiting block 1121 and the positioning ring 111 are designed as separate units, and are connected as a whole by the fixing member 114 and the fixing hole 111b, which facilitates the processing and assembly of the fixing module.

[0033] Specifically, the fixing hole 111b can be a threaded hole, in which case the fixing member 114 is a bolt. The bolt passes through the through hole 1121a and is threadedly connected to the threaded hole, so that the limiting block 1121 can be detachably fixed to the positioning ring 111 by locking the bolt. The structure is simple and easy to implement. Alternatively, the fixing hole 111b can be a snap-fit ​​hole, in which case the fixing member 114 is a snap-fit ​​pin. The snap-fit ​​pin passes through the through hole 1121a and is snap-fit ​​connected to the snap-fit ​​hole, so that the limiting block 1121 can be detachably fixed to the positioning ring 111 by inserting and removing the snap-fit ​​pin. The structure is simple and easy to implement.

[0034] Of course, in other embodiments, the limiting block 1121 may also be integrally formed with the positioning ring 111. In this case, the limiting block 1121 may be integrally formed with the positioning ring 111 by injection molding or 3D printing, but not limited to injection molding or 3D printing.

[0035] In the embodiments of this application, such as Figure 5As shown, the angle between the second surface 12c and the plane perpendicular to the axial direction OO' of the guide sleeve 12 is less than or equal to 30 degrees. The angle between the second surface 12c and the plane perpendicular to the axial direction OO' of the guide sleeve 12 can be, but is not limited to, 0.5 degrees, 1.0 degrees, 1.5 degrees, 3 degrees, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, or 30 degrees. By designing the tilt angle of the second surface 12c of the guide sleeve 12 to meet the above range, the drill gun 2 of the CNC drilling machine can perform drilling operations on the inclined surface 3a of the workpiece 3 to be processed, which has a corresponding tilt angle. This ensures that the inclined surface 3a of the workpiece 3 to be processed provides good support for the guide sleeve 12.

[0036] In the embodiments of this application, such as Figure 3 , Figure 5 and Figure 6As shown, the guide sleeve 12 includes a sleeve body 121, which includes a first part 1211, a second part 1212, and a third part 1213 connected sequentially along the axial direction OO' of the guide sleeve 12. The first part 1211 has the aforementioned first surface 12b, and the third part 1213 has the aforementioned second surface 12c. The outer peripheral surface of the first part 1211 is further away from the axis of the guide hole 12a than the outer peripheral surface of the second part 1212, and the outer peripheral surface of the second part 1212 is further away from the axis of the guide hole 12a than the outer peripheral surface of the third part 1213, so that the first part 1211, the second part 1212, and the third part 1213 form a stepped structure. The outer peripheral surface of the first part 1211 is provided with the aforementioned second limiting part 12d (specifically, the aforementioned limiting groove 12d1). When the guide sleeve 12 is assembled with the positioning ring 111, the first part 1211 is embedded in the positioning ring 111. By designing the cross-section of the first part 1211 in the plane perpendicular to the axial direction OO' of the guide sleeve 12 to be larger than the cross-section of the second part 1212 in the plane perpendicular to the axial direction OO' of the guide sleeve 12, and designing the cross-section of the second part 1212 in the plane perpendicular to the axial direction OO' of the guide sleeve 12 to be larger than the cross-section of the third part 1213 in the plane perpendicular to the axial direction OO' of the guide sleeve 12, the guide sleeve 12 is distributed in a "stepped" manner. This reduces the overall volume and weight of the guide sleeve 12, thereby reducing the pressure exerted by the guide sleeve 12 on the U-shaped guide sleeve fixing end 4 of the CNC drilling machine (which can automatically replace the guide sleeve 12 on the positioning ring 111 as needed without manual intervention), thus improving the stability of the U-shaped guide sleeve fixing end 4 of the CNC drilling machine when replacing the guide sleeve 12. It is also understood that when the guide sleeve 12 is assembled with the positioning ring 111, the guide sleeve 12 exerts a force on the elastic retaining body 113 inside the positioning ring 111, causing the end of the elastic retaining body 113 to move elastically. The greater the weight of the guide sleeve 12, the easier it is for this force to overcome the elastic force of the elastic retaining body 113. By designing the guide sleeve 12 to be distributed in a "stepped" manner, this application can reduce the overall weight of the guide sleeve 12, thereby reducing the force exerted by the guide sleeve 12 on the elastic retaining body 113. This can prevent the guide sleeve 12 from falling off due to the excessive weight of the guide sleeve 12 causing the elastic retaining body 113 to release its retaining effect.

[0037] In the embodiments of this application, such as Figure 5 and Figure 6As shown, the guide hole 12a may include a first guide hole 12a1 and a second guide hole 12a2. The first guide hole 12a1 and the second guide hole 12a2 extend along the axial direction OO' of the guide sleeve 12 and are interconnected. The wall surface of the first guide hole 12a1 may be set in the form of a conical surface, which has a guiding function, making it easier for the drill gun 2 of the CNC drilling machine to pass through the first guide hole 12a1 into the second guide hole 12a2. The diameter of the second guide hole 12a2 is slightly larger than the diameter of the drill gun 2 of the CNC drilling machine, so that the drill gun 2 of the CNC drilling machine can pass smoothly through the second guide hole 12a2, and can play a guiding and positioning role for the drill gun 2 of the CNC drilling machine through the second guide hole 12a2.

[0038] The guide sleeve 12 also includes an insert 122 embedded in the second part 1212 and the third part 1213. A first guide hole 12a1 penetrates the second part 1212 along the axial direction OO' of the guide sleeve 12, and a second guide hole 12a2 penetrates the insert 122 along the axial direction OO' of the guide sleeve 12. The hardness of the insert 122 is greater than the hardness of the sleeve body 121. By designing the insert 122 to be made of a material with relatively high hardness, the wear of the CNC drilling machine's drill rig 2 on the second guide hole 12a2 can be reduced, thereby extending the overall service life of the guide sleeve 12. By designing the sleeve body 121 to be made of a material with relatively low hardness, the production cost of the guide sleeve 12 can be reduced. For example, the material of the sleeve body 121 can be bearing steel, and the material of the insert 122 can be tungsten steel.

[0039] The end face of the insert 122 facing away from the first part 1211 is in the same plane as the second surface 12c. This makes the end face of the insert 122 facing away from the first part 1211 also a slope in the same plane as the second surface 12c. When the second surface 12c of the sleeve body 121 is in contact with the slope 3a to be processed of the workpiece 3, the end face of the insert 122 facing away from the first part 1211 is also in contact with the slope 3a to be processed of the workpiece 3. At this time, the length of the overhang section of the drill gun 2 of the CNC drilling machine is almost zero, which completely eliminates the potential wobble space of the overhang section of the drill gun 2 between the guide sleeve 12 and the workpiece 3, thereby improving the hole position accuracy.

[0040] It is understandable that, in order for the drill gun 2 of the CNC drilling machine to perform drilling operations on workpieces 3 with different inclination angles on the inclined surface 3a to be machined, such as... Figure 7As shown, the CNC drilling machine also includes a tool magazine 5, which includes a tool head 51 and a tool holder 52. The tool holder 52 is installed on the tool head 51 and is used to hold the guide sleeve 12. Multiple tool holders 52 are installed on the tool head 51. The multiple tool holders 52 can be used to hold multiple guide sleeves 12 with different inclination angles on the second surface 12c. The U-shaped guide sleeve fixed end 4 grabs the guide sleeve 12 that matches the inclined surface 3a of the workpiece 3 to be processed from the corresponding tool holder 52 according to the gripping command. In order to enable the U-shaped guide sleeve fixing end 4 to grasp the guide sleeve 12 at a preset angle, and to align the second limiting part 12d (specifically the limiting groove 12d1 described above) on the guide sleeve 12 with the first limiting part 112 (specifically the limiting block 1121 described above) on the positioning ring 111, so that the U-shaped guide sleeve fixing end 4 can assemble the grasped guide sleeve 12 onto the positioning ring 111, the tool magazine 5 is designed to also include a positioning block 53. The positioning block 53 is installed on the tool disc 51. The outer peripheral surface of the second part 1212 is provided with a positioning groove 12f. When the guide sleeve 12 is clamped on the tool holder 52, the positioning groove 12f is used to cooperate with the positioning block 53 to restrict the rotation of the guide sleeve 12 relative to the tool holder 52. When the guide sleeve 12 is clamped on the tool holder 52, at least a portion of the positioning block 53 is embedded in the positioning groove 12f. The positioning block 53 abuts against the groove wall of the positioning groove 12f to restrict the rotation of the guide sleeve 12 relative to the tool holder 52, ensuring that the guide sleeve 12 will not rotate relative to the tool holder 52 during the rotation of the tool disc 51, and ensuring that the guide sleeve 12 will not deflect during the subsequent gripping of the corresponding guide sleeve 12 by the U-shaped guide sleeve fixing end 4 of the CNC drilling machine according to the gripping command, thereby positioning the guide sleeve 12 so that the U-shaped guide sleeve fixing end 4 can grip the guide sleeve 12 at a preset angle, so that the second limiting part 12d on the guide sleeve 12 can be aligned with the first limiting part 112 on the positioning ring 111, so that the U-shaped guide sleeve fixing end 4 can assemble the gripped guide sleeve 12 onto the positioning ring 111.

[0041] Specifically, to facilitate the machining of the positioning groove 12f and the second limiting part 12d (specifically the limiting groove 12d1 mentioned above) on the guide sleeve 12, the positioning groove 12f and the second limiting part 12d are arranged opposite each other, that is, the projection of the positioning groove 12f and the second limiting part 12d in the plane perpendicular to the axial direction OO' of the guide sleeve 12 is arranged radially along the guide sleeve 12.

[0042] Secondly, embodiments of this application provide a CNC drilling machine, which includes the aforementioned guide sleeve assembly 1. Based on the CNC drilling machine in this application embodiment, by designing the second surface 12c of the guide sleeve 12 as an inclined surface adapted to the inclined surface 3a of the workpiece 3 to be processed, the guiding and positioning of the guide sleeve 12 for the drill gun 2 can be adapted to the working scenario where the surface to be processed is not parallel to the horizontal plane.

[0043] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A guide sleeve assembly, characterized in that, Applied to a CNC drilling machine, the drilling gun of the CNC drilling machine is used to drill holes on the inclined surface of the workpiece to be machined; the guide sleeve assembly includes: The positioning module includes a positioning ring and a first limiting part. The positioning ring is used to connect with the fixed end of the U-shaped guide sleeve of the CNC drilling machine, and the first limiting part is disposed on the positioning ring. The guide sleeve is detachably assembled to the positioning ring. The guide sleeve has a guide hole extending through it along its axial direction. The guide sleeve also has a first surface and a second surface that are arranged opposite to each other along its axial direction. The second surface is an inclined surface. The outer peripheral surface of the guide sleeve is provided with a second limiting part. When the guide sleeve is assembled on the positioning ring, the second limiting part cooperates with the first limiting part to restrict the rotation of the guide sleeve relative to the positioning ring. When the drill gun of the CNC drilling machine performs drilling operations, the drill gun of the CNC drilling machine passes through the guide hole, and the second surface is used to fit against the inclined surface to be processed of the workpiece.

2. The guide sleeve assembly as described in claim 1, characterized in that, The first limiting part is a limiting block fixedly connected to the positioning ring, and the second limiting part is a limiting groove provided on the outer peripheral surface of the guide sleeve. When the guide sleeve is assembled to the positioning ring, at least a portion of the limiting block is embedded in the limiting groove.

3. The guide sleeve assembly as described in claim 2, characterized in that, The positioning ring is provided with a fixing hole, and the limiting block is provided with a through hole corresponding to the fixing hole; The positioning module also includes a fixing member, which passes through the through hole and is connected to the fixing hole to detachably connect the limiting block to the positioning ring.

4. The guide sleeve assembly as described in claim 3, characterized in that, The fixing hole is a threaded hole, the fixing element is a bolt, and the bolt passes through the through hole and is threadedly connected to the threaded hole.

5. The guide sleeve assembly as described in claim 1, characterized in that, The angle between the second surface and the plane perpendicular to the axial direction of the guide sleeve is less than or equal to 30 degrees.

6. The guide sleeve assembly as described in any one of claims 1-5, characterized in that, The guide sleeve includes a sleeve body, which includes a first part, a second part, and a third part connected sequentially along the axial direction of the guide sleeve. The first part has the first surface, and the third part has the second surface. The outer peripheral surface of the first part is further away from the axis of the guide hole than the outer peripheral surface of the second part, and the outer peripheral surface of the second part is further away from the axis of the guide hole than the outer peripheral surface of the third part, so that the first part, the second part and the third part form a stepped structure; The outer peripheral surface of the first part is provided with the second limiting part, and when the guide sleeve is assembled with the positioning ring, the first part is embedded in the positioning ring.

7. The guide sleeve assembly as described in claim 6, characterized in that, The guide hole includes a first guide hole and a second guide hole; The guide sleeve further includes an insert embedded in the second part and the third part. The first guide hole penetrates the second part along the axial direction of the guide sleeve, and the second guide hole penetrates the insert along the axial direction of the guide sleeve. The hardness of the insert is greater than the hardness of the sleeve body, and the end face of the insert facing away from the first part is located in the same plane as the second surface.

8. The guide sleeve assembly as described in claim 6, characterized in that, The CNC drilling machine includes a tool magazine, which includes a tool head, a tool holder, and a positioning block. The tool holder is installed on the tool head and is used to hold the guide sleeve. The positioning block is installed on the tool head. The outer peripheral surface of the second part is provided with a positioning groove. When the guide sleeve is clamped on the tool holder, the positioning groove is used to cooperate with the positioning block to restrict the rotation of the guide sleeve relative to the tool holder.

9. The guide sleeve assembly as described in claim 8, characterized in that, The positioning groove is positioned directly opposite the second limiting part.

10. A CNC drilling machine, characterized in that, Includes the guide sleeve assembly as described in any one of claims 1-9.

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