A hole making apparatus end adjustment hold down device for variable, high curvature products and method of use

Abstract

This invention discloses an end-of-line adjusting and clamping device for drilling equipment of products with variable and high curvature, and its usage method. The device includes a nose-pressing mechanism and an end-connecting mechanism. Multiple pressure blocks are provided on one end face of the nose-pressing mechanism, and multiple sets of sliding ball assemblies are circumferentially assembled on the sleeve at the other end. The sliding balls extend from their mounting holes to the inner side of the sleeve. An annular boss is provided inside the sleeve, and a circumferential locking tooth is formed on the inner wall of the boss. The end of the end-connecting mechanism connected to the nose-pressing mechanism is configured with a stepped structure. The annular groove on the circumference of the first-level boss wall and the multiple sliding balls achieve axial positioning of the two mechanisms. The elastic locking block assembly on the second-level boss wall forms an elastic meshing structure with the circumferential locking tooth, allowing the nose-pressing mechanism to rotate unidirectionally along the second-level boss. Through the rotation of the nose-pressing mechanism on the product surface, and the contact between the multiple pressure blocks at its end and the product surface, the normal correction of the product with variable and high curvature is achieved.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of automatic hole-making technology, and particularly to an end-effector adjustment and clamping device for hole-making equipment for products with variable or high curvature, and its method of use. Background Technology

[0002] In modern manufacturing, automated machining technology has been widely used, especially in the aerospace manufacturing field. Automated hole-making technology is widely used in aircraft assembly processes. Compared with traditional manual hole-making, automated hole-making has advantages such as high precision in hole diameter and good consistency in hole diameter.

[0003] As performance requirements for aviation products continue to rise, their structural forms are also constantly changing and upgrading. Products with variable curvature and high curvature are emerging, particularly noticeable in aircraft wing components. In some variable curvature and high curvature machining areas, such as the wing leading edge, existing hole-making equipment's end-adjustment clamping devices struggle to achieve complete contact with the product when performing normal correction on the machined holes. This frequently leads to problems such as inability to perform normal correction or incorrect correction. The accuracy of normal correction directly affects the perpendicularity of the machined holes, which has a serious impact on aircraft flight quality and safety. Furthermore, the efficiency of normal correction also affects aircraft assembly efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an end-effector adjustment and clamping device for drilling holes in products with variable or high curvature, and its usage method, in order to solve the problems that cannot be corrected or are incorrectly corrected when drilling holes in products with variable or high curvature using existing drilling methods, thereby directly affecting the perpendicularity of the drilled holes and seriously impacting the flight quality and safety of aircraft.

[0005] The technical solution of the present invention is as follows: In a first aspect, the present invention provides an end-adjusting and clamping device for a hole-making equipment for products with variable and high curvature, comprising: a nose-pressing mechanism 1 and an end-connecting mechanism 10; The nose pressing mechanism 1 has a plurality of pressure blocks 2 arranged circumferentially on one end face of the nose pressing body, and a sleeve 3 at the other end of the nose pressing body. The sleeve 3 is equipped with a plurality of sets of sliding ball assemblies circumferentially, and the sliding ball 7 in each set of sliding ball assemblies extends out of its mounting hole to reach the inner side of the sleeve 3. The sleeve 3 is provided with an annular boss 8 inside, and a circumferential locking tooth 9 is formed on the inner wall of the annular boss 8 circumferentially for cooperating with the locking block 17 on the end connecting mechanism 10. The end of the end connection mechanism 10 connected to the nose-pressing mechanism 1 is configured with a stepped structure. The annular groove 12 on the periphery of the wall of the primary boss 11 and the multiple sliding balls in the nose-pressing mechanism 1 achieve axial positioning of the two mechanisms. The elastic locking block assembly on the wall of the secondary boss 13 forms an elastic meshing structure with the peripheral locking teeth 9 in the nose-pressing mechanism 1, so that the nose-pressing mechanism 1 rotates unidirectionally along the secondary boss 13. Through the rotation of the nose-pressing mechanism 1 on the product surface, the multiple pressure blocks 2 at its end contact the product surface, thereby achieving normal correction of products with variable or high curvature.

[0006] Optionally, in the end-adjusting clamping device of a hole-making equipment for products with variable and high curvature as described above, the nose-pressing mechanism 1 includes: a nose-pressing body, multiple pressure blocks 2, and multiple sets of sliding ball assemblies. Each set of sliding ball assemblies includes: a sliding ball 7, and a bolt 5 and a clamping spring 6 that are fitted together. The nose-pressing body is configured as a stepped column structure with a hollow cavity. Multiple pressure blocks 2 are evenly arranged circumferentially on the end face of the small-diameter column. The large-diameter column is a sleeve 3. Multiple ball mounting holes 4 are evenly opened circumferentially on the sleeve 3 for mounting balls 7 through each ball mounting hole 4. After inserting a compression spring 6 into each ball mounting hole 4, the sleeve 3 is fixed to the outer end of the ball mounting hole 4 by bolts 5. The spring force of the compression spring 6 pushes the ball 7 from the inner end of the ball mounting hole 4 to the inner side of the sleeve 3.

[0007] Optionally, in the end-adjusting clamping device of the hole-making equipment for products with variable and high curvature as described above, the diameter of the sliding ball 7 is larger than the diameter of the sliding ball mounting hole 4 and smaller than the diameter of the sliding groove 12, which is used to restrict the sliding ball 7 from sliding out of the inner end of the sliding ball mounting hole 4 of the sleeve 3, and restricts the installation structure of the sleeve 3 and the first-stage boss 11 of the end connection mechanism 10 through the sliding groove 12.

[0008] Optionally, in the end-adjusting and clamping device for a hole-making equipment for products with variable or high curvature as described above, the end-connecting mechanism 10 includes: a hole-making equipment connecting part, and a stepped connecting part disposed on one end face of the hole-making equipment connecting part; The stepped connecting part includes: a primary boss 11 disposed on the end face of the connecting part of the drilling equipment, and a secondary boss 13 disposed on the end face of the primary boss 11; the wall of the primary boss 11 is provided with an annular groove 12 that cooperates with the sliding ball 7, so that after the end connecting mechanism 10 and the nose pressing mechanism 1 are assembled, the axial positioning of the two mechanisms can be achieved by the cooperation of multiple circumferentially arranged sliding balls 7 and the annular groove 12; The secondary boss 13 has at least one locking block mounting groove 14 on its wall surface. A lower guide pin 15 is provided in the locking block mounting groove 14. An upper guide pin 18 is provided on the lower end face of one end of the locking block 17. The other end of the locking block 17 is installed in the locking block mounting groove 14 by a mounting screw 19, so that the upper guide pin 18 of the locking block 17 and the lower guide pin 15 of the locking block mounting groove 14 are positioned opposite each other. A support spring 16 is fitted between the upper guide pin 18 and the lower guide pin 15 to support the locking block 17.

[0009] Optionally, in the end-of-line adjusting clamping device of a hole-making equipment for products with variable or high curvature as described above, After the end connection mechanism 10 is assembled with the nose pressing mechanism 1, based on the elastic meshing structure of the support block 17 and the peripheral teeth 9, the opening of the support block 17 meshes with one of the teeth 9, restricting the rotation of the nose pressing mechanism 1 in one direction. When the nose pressing mechanism 1 rotates in another direction, the support block 17 is pressed down and the nose pressing mechanism 1 rotates. When it rotates to the next tooth 9, the support block 17 pops out under the action of the support spring 16 and meshes with the current tooth 9.

[0010] Optionally, in the end-of-line adjusting clamping device of a hole-making equipment for products with variable or high curvature as described above, The pressure blocks 2 are evenly arranged circumferentially on the front end face of the nose pressing mechanism 1. There are 8 pressure blocks 2, so that the multiple pressure blocks 2 arranged circumferentially can make multiple points of contact with the curved surface of the product, and the hole normal of the product can be determined by 3 pressure blocks 2.

[0011] Optionally, in the end-adjusting clamping device of a hole-making equipment for products with variable or high curvature as described above, the central axis of the ball mounting hole 4 intersects perpendicularly with the center line of the slide groove 12.

[0012] Secondly, the present invention also provides a method for using an end-effector adjusting clamping device for a hole-making equipment for products with variable or high curvature, comprising: Step 1: Fit the nose pressing mechanism 1 onto one end of the end connecting mechanism 10, and install the end connecting mechanism 10 fitted with the nose pressing mechanism 1 onto the hole making equipment. Step 2: Before performing normal correction on the product to be processed, manually rotate the nose pressing mechanism 1 according to the actual curvature of the product to be processed to ensure that at least 3 pressure blocks 2 at the front end of the nose pressing mechanism 1 are in contact with the surface of the product to be processed. Step 3: Operate the hole-making equipment to correct the normal direction of the product. During the correction process, adjust the nose-pressing mechanism 1 according to the actual situation based on the curvature change of the product, and ensure that at least 3 pressure blocks 2 are in contact with the product to be processed during the correction process until all normal correction and hole-making are completed.

[0013] Optionally, in the method of using the end-adjusting clamping device of a hole-making equipment for products with variable or high curvature as described above, step 1 includes: Install the locking block 17 into the locking block mounting groove 14 using the locking block mounting screw 19. Fit the support spring 16 between the upper guide pin 18 of the locking block 17 and the lower guide pin 15 in the locking block mounting groove 14. Fit the end connecting mechanism 10 into the sleeve 3 of the nose pressing mechanism 1 and engage the locking block 17 into the locking tooth 9. Then, place the slider 7 into the slider mounting hole 4, then insert the compression spring 6 and install the bolt 5 to ensure that the part of the slider 7 exposed in the slider mounting hole 4 is fully inserted into the sliding groove 12. Connect the end mounting groove of the end connecting mechanism 10 to the hole making equipment.

[0014] The beneficial effects of the present invention are as follows: The present invention provides an end-of-line adjustment and clamping device for drilling equipment for products with variable and high curvature, and its usage method. The main structure of the device includes two parts: a nose-pressing mechanism 1 and an end-connecting mechanism 10. On the one hand, the multiple sets of sliding ball assemblies arranged circumferentially on the sleeve 3 of the nose-pressing mechanism 1 cooperate with the sliding groove 12 around the primary boss 11 in the end-connecting mechanism 10 to realize the fitting of the two mechanisms, i.e., axial positioning. On the other hand, the circumferential locking teeth 9 of the inner ring of the annular boss 8 inside the sleeve 3 of the nose-pressing mechanism 1 cooperate with the elastic locking block assembly on the side wall of the secondary boss 13 in the end-connecting mechanism 10 to realize the unidirectional rotation of the nose-pressing mechanism 1 relative to the end-connecting mechanism 10, thereby adjusting the contact between the nose-pressing mechanism 1 and the product surface. Furthermore, through the multiple pressure blocks 2 arranged at the front end of the nose-pressing mechanism 1, before the product normal is corrected, the product normal is determined by the contact between at least 3 pressure blocks 2 at the front end of the nose-pressing mechanism 1 and the product surface. During the product normal correction process, the adjustment of the nose-pressing mechanism 1 can always keep the equipment tool and the product normal consistent. The beneficial effects of the technical solution provided by this invention are as follows: the end-of-hole adjusting clamping device of the hole-making equipment has a simple structure, is easy to use and adjust, has low maintenance costs, and is highly versatile. It can be adapted to hole-making robots, five-axis machining centers, and other hole-making equipment and products with different structural forms for hole-making normal correction and processing. In particular, for products with high curvature and variable curvature, it completely avoids the frequent replacement of clamping devices and tool setting operations during normal correction and hole-making processing. While improving processing efficiency, it effectively ensures the consistency of processed holes. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of an end-effector adjusting and clamping device for a hole-making equipment for products with variable or high curvature, provided in an embodiment of the present invention. Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram of the installation structure of the nose mechanism in the end-of-line adjusting clamping device of a hole-making equipment for products with variable and high curvature. Figure 2 Figures a and b in the diagram are schematic diagrams of the nose-pressing mechanism from different perspectives; Figure 3 for Figure 1 The illustrated embodiment provides a schematic diagram of the installation structure of the end connection mechanism in the end adjustment and clamping device of the hole-making equipment for products with variable and high curvature. Figure 4 for Figure 3 A partially enlarged schematic diagram of the end connection mechanism mounting structure provided in the illustrated embodiment.

[0017] Explanation of reference numerals in the attached figures: 1-Pressure nose mechanism, 2-Pressure block, 3-Sleeve, 4-Slider mounting hole, 5-Bolt, 6-Compression spring, 7-Slider, 8-Annular boss, 9-Clamping tooth, 10-End connection mechanism, 11-Primary boss, 12-Slide groove, 13-Secondary boss, 14-Clamping block mounting groove, 15-Lower guide pin, 16-Support spring, 17-Clamping block, 18-Upper guide pin, 19-Mounting screw. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0019] As explained in the background section, for products with varying or high curvature, existing end-effector adjustment and clamping devices in hole-making equipment often struggle to achieve complete contact with the product when performing normal correction on the machined holes. This frequently leads to problems such as inability to perform normal correction or incorrect correction. Furthermore, as the product's curvature changes, normal correction may become impossible to continue. It is important to note that the accuracy of normal correction directly affects the perpendicularity of the machined holes, which has a significant impact on aircraft flight quality and safety. The efficiency of normal correction also affects aircraft assembly efficiency.

[0020] Therefore, there is an urgent need for an efficient and reliable end clamping device for hole-making equipment suitable for products with variable or high curvature.

[0021] To address the aforementioned problems, this invention provides an end-of-line adjusting and clamping device for drilling equipment used in products with variable or high curvature, and its method of use, so as to achieve efficient and reliable normal correction for products with variable or high curvature.

[0022] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of an end-effector adjusting and clamping device for a hole-making equipment for products with variable or high curvature, provided by an embodiment of the present invention. Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram of the installation structure of the nose-pressing mechanism in the end-of-line adjusting clamping device of a hole-making equipment for products with variable or high curvature. Figure 3 for Figure 1 The illustrated embodiment provides a schematic diagram of the installation structure of the end connection mechanism in the end adjustment and clamping device of the hole-making equipment for products with variable and high curvature.

[0024] Reference Figures 1 to 3 As shown, this embodiment of the invention provides an end-of-line adjusting and clamping device for a hole-making equipment for products with variable or high curvature. The device mainly includes two parts: a nose-pressing mechanism 1 and an end-of-line connecting mechanism 10.

[0025] like Figure 1 In the left-hand component, the nose-pressing mechanism 1 in this embodiment of the invention has a plurality of pressure blocks 2 arranged circumferentially on one end face of the nose-pressing body, and a sleeve 3 at the other end of the nose-pressing body. The sleeve 3 is equipped with a plurality of sets of sliding ball assemblies circumferentially, and the sliding ball 7 in each set of sliding ball assemblies extends out of its mounting hole to reach the inner side of the sleeve 3. Furthermore, an annular boss 8 is provided inside the sleeve 3, and a circumferential locking tooth 9 is formed circumferentially on the inner wall surface of the annular boss 8 for cooperating with the locking block 17 on the end connection mechanism 10.

[0026] like Figure 1 In the right-hand component of this embodiment, the end connecting mechanism 10 is connected to the nose-pressing mechanism 1 at one end, which is configured as a stepped structure. The annular groove 12 on the periphery of the wall of the primary boss 11 and the multiple sliding balls in the nose-pressing mechanism 1 achieve axial positioning of the two mechanisms. The elastic locking block assembly on the wall of the secondary boss 13 forms an elastic meshing structure with the peripheral locking teeth 9 in the nose-pressing mechanism 1, so that the nose-pressing mechanism 1 rotates unidirectionally along the secondary boss 13. Through the rotation of the nose-pressing mechanism 1 on the product surface, the multiple pressure blocks 2 at its end contact the product surface, thereby achieving normal correction of products with variable or high curvature.

[0027] In one implementation of the present invention, the nose pressing mechanism 1 includes: a nose pressing body, a plurality of pressure blocks 2, and a plurality of sets of sliding ball assemblies; each set of sliding ball assemblies includes: a sliding ball 7, and a bolt 5 and a compression spring 6 that are fitted together.

[0028] like Figure 3As shown, the nose-pressing body in this implementation is configured as a stepped column structure with a hollow cavity. Multiple pressure blocks 2 are evenly arranged circumferentially on the end face of the small-diameter column. The large-diameter column is a sleeve 3. Multiple ball mounting holes 4 are evenly opened circumferentially on the sleeve 3 for mounting balls 7 through each ball mounting hole 4. After inserting a compression spring 6 into each ball mounting hole 4, the sleeve 7 is fixed to the outer end of the ball mounting hole 4 by bolts 5. The spring force of the compression spring 6 pushes the ball 7 out from the inner end of the ball mounting hole 4 to the inner side of the sleeve 3. Figure 3 The example shown is that there are 3 sliding ball mounting holes 4 evenly distributed around the sleeve 3; correspondingly, there are 3 sliding balls 7 and 3 matching mounting structures.

[0029] It should be noted that the diameter of the slider 7 is larger than the diameter of the slider mounting hole 4 and smaller than the diameter of the groove 12. This is used to restrict the slider 7 from sliding out of the inner end of the slider mounting hole 4 of the sleeve 3, and to restrict the installation structure of the sleeve 3 and the first-stage boss 11 of the end connection mechanism 10 through the groove 12.

[0030] In one implementation of this invention, such as Figure 4 As shown, the end connection mechanism 10 includes: a hole-making equipment connection part, and a stepped connection part disposed on one end face of the hole-making equipment connection part.

[0031] In this implementation, the step connection part includes: a primary boss 11 disposed on the end face of the hole-making equipment connection part, and a secondary boss 13 disposed on the end face of the primary boss 11; the wall of the primary boss 11 is provided with an annular groove 12 that cooperates with the sliding ball 7, so that after the end connection mechanism 10 and the nose-pressing mechanism 1 are assembled, the axial positioning of the two mechanisms can be achieved by the cooperation of multiple circumferentially arranged sliding balls 7 and the annular groove 12.

[0032] In specific implementation, such as Figure 4 As shown, Figure 3 The illustrated embodiment provides a partially enlarged schematic diagram of the end connection mechanism mounting structure. The secondary boss 13 has at least one locking block mounting groove 14 on its wall surface. A lower guide pin 15 is disposed within the locking block mounting groove 14. An upper guide pin 18 is disposed on the lower end face of one end of the locking block 17. The other end of the locking block 17 is mounted in the locking block mounting groove 14 by mounting screws 19, such that the upper guide pin 18 of the locking block 17 and the lower guide pin 15 of the locking block mounting groove 14 are positioned opposite each other. A support spring 16 is fitted between the upper guide pin 18 and the lower guide pin 15 to support the locking block 17. Figure 3 and Figure 4Taking the example of setting a locking block 17 on one side of the wall of the secondary boss 13 of the end connection mechanism 10, in a preferred embodiment, two locking blocks 17 can be centrally and symmetrically arranged on the wall of the secondary boss 13. The opening directions of the two locking blocks 17 are consistent, ensuring that the nose pressing mechanism 1 can rotate unidirectionally relative to the end connection mechanism 10.

[0033] In this embodiment of the invention, after the end connection mechanism 10 and the nose pressing mechanism 1 are assembled, based on the elastic meshing structure of the support block 17 and the peripheral teeth 9, the opening of the support block 17 meshes with one of the teeth 9, restricting the rotation of the nose pressing mechanism 1 in one direction. When the nose pressing mechanism 1 rotates in another direction, the support block 17 is pressed down and the nose pressing mechanism 1 is rotated. When it rotates to the next tooth 9, the support block 17 pops out under the action of the support spring 16 and meshes with the current tooth 9.

[0034] In an optional implementation of this invention, pressure blocks 2 are uniformly arranged circumferentially on the front end face of the nose-pressing mechanism 1. There are 8 pressure blocks 2, so that the multiple pressure blocks 2 arranged circumferentially can make multi-point contact with the curved surface of the product, and the hole-making normal of the product can be determined by 3 pressure blocks 2.

[0035] It should be noted that the correction end face of the traditional hole making is a plane. The present invention changes the plane to a multi-point contact form, and adopts the principle of determining the plane by three points of at least three pressure blocks 2. Compared with the traditional hole making plane, it is easier to find the hole making normal on the surface of the product with curvature.

[0036] In an optional implementation of this invention, the central axis of the ball mounting hole 4 intersects perpendicularly with the center line of the groove 12, which can more effectively embed the protruding part of the ball 7 installed in the nose pressing mechanism 1 into the groove 12 of the end connecting mechanism 10.

[0037] Based on the end-effector adjustment and clamping device for drilling equipment of variable and high curvature products provided in the embodiments of the present invention, the embodiments of the present invention also provide a method of using the end-effector adjustment and clamping device for drilling equipment of variable and high curvature products, including: Step 1: Fit the nose pressing mechanism 1 onto one end of the end connecting mechanism 10, and install the end connecting mechanism 10 fitted with the nose pressing mechanism 1 onto the hole making equipment. Step 2: Before performing normal correction on the product to be processed, manually rotate the nose pressing mechanism 1 according to the actual curvature of the product to be processed to ensure that at least 3 pressure blocks 2 at the front end of the nose pressing mechanism 1 are in contact with the surface of the product to be processed. Step 3: Operate the hole-making equipment to correct the normal direction of the product. During the correction process, adjust the nose-pressing mechanism 1 according to the actual situation based on the curvature change of the product, and ensure that at least 3 pressure blocks 2 are in contact with the product to be processed during the correction process until all normal correction and hole-making are completed.

[0038] This invention provides an end-of-line adjustment and clamping device for drilling equipment of products with variable and high curvature, and its usage method. The main structure of the device includes two parts: a nose-pressing mechanism 1 and an end-connecting mechanism 10. On the one hand, multiple sets of sliding ball assemblies arranged circumferentially on the sleeve 3 of the nose-pressing mechanism 1 cooperate with the sliding groove 12 around the primary boss 11 in the end-connecting mechanism 10 to achieve the fitting of the two mechanisms, i.e., axial positioning. On the other hand, the circumferential locking teeth 9 of the inner ring of the annular boss 8 inside the sleeve 3 of the nose-pressing mechanism 1 cooperate with the elastic locking block assembly on the side wall of the secondary boss 13 in the end-connecting mechanism 10 to achieve unidirectional rotation of the nose-pressing mechanism 1 relative to the end-connecting mechanism 10, thereby adjusting the contact between the nose-pressing mechanism 1 and the product surface. Furthermore, through multiple pressure blocks 2 arranged at the front end of the nose-pressing mechanism 1, before the product normal is corrected, the product normal is determined by the contact between at least 3 pressure blocks 2 at the front end of the nose-pressing mechanism 1 and the product surface. During the product normal correction process, the adjustment of the nose-pressing mechanism 1 can always keep the equipment tool and the product normal consistent. The beneficial effects of the technical solution provided by this invention are as follows: the end-of-hole adjusting clamping device of the hole-making equipment has a simple structure, is easy to use and adjust, has low maintenance costs, and is highly versatile. It can be adapted to hole-making robots, five-axis machining centers, and other hole-making equipment and products with different structural forms for hole-making normal correction and processing. In particular, for products with high curvature and variable curvature, it completely avoids the frequent replacement of clamping devices and tool setting operations during normal correction and hole-making processing. While improving processing efficiency, it effectively ensures the consistency of processed holes.

[0039] The following is an illustrative description of the implementation method of the end-of-line adjusting clamping device for drilling equipment for products with variable and high curvature provided by the present invention and its usage method.

[0040] Implementation Example See Figures 1 to 4 As shown, the structure of the end-adjusting clamping device of the hole-making equipment in this embodiment is the same as that in the above embodiment. In this embodiment, the maximum diameter of the sliding ball 7 is greater than the diameter of the sliding ball mounting hole 4 and less than the diameter of the sliding groove 12. It is used to restrict the sliding ball 7 from sliding out of the inner end of the sliding ball mounting hole 4 of the sleeve 3, and it restricts the installation structure of the sleeve 3 and the first-level boss 11 of the end connection mechanism 10 through the sliding groove 12. The pressure blocks 2 are evenly arranged on the front end face of the nose mechanism 1 in the circumferential direction, and the number of pressure blocks 2 is 8. The sliding ball mounting holes 4 are evenly distributed around the sleeve 3, and the number of holes is 3. The central axis of the sliding ball mounting holes 4 intersects perpendicularly with the central line of the sliding groove 12.

[0041] In this implementation example, the method of using the end-of-hole adjusting clamping device of the hole-making equipment for products with variable or high curvature includes the following steps: Step 1: Install the locking block 17 into the locking block mounting groove 14 using the locking block mounting screw 19. Then, fit the support spring 16 between the upper guide pin 18 of the locking block 17 and the lower guide pin 15 in the locking block mounting groove 14. Next, fit the end connecting mechanism 10 into the sleeve 3 of the nose pressing mechanism 1 and lock the locking block 17 into the locking tooth 9. Then, put the ball 7 into the ball mounting hole 4, then put in the compression spring 6 and install the bolt 5 to ensure that the part of the ball 7 exposed in the ball mounting hole 4 is completely placed into the sliding groove 12 of the end connecting mechanism 1. Finally, connect the end mounting groove of the end connecting mechanism 10 to the hole making equipment. Step 2: Before correcting the normal direction of the product to be processed, the nose pressing mechanism 1 is manually rotated according to the actual curvature of the product to be processed, ensuring that at least 3 pressure blocks 2 at the front end of the nose pressing mechanism 1 are in contact with the surface of the product to be processed. It should be noted that the cutting tool of the hole-making equipment extends from the hollow cavity of the nose pressing mechanism 1 to the front end. Through the contact of at least 3 pressure blocks 2 with the surface of the product, the interlayer gap of the product is eliminated, and the hole-making normal direction of the product can be accurately located, so that the cutting tool is consistent with the hole-making normal direction. Step 3: Operate the hole-making equipment to perform normal correction on the product. That is, after adjusting the device in step 2 so that at least 3 pressure blocks 2 are in contact with the surface of the product to be processed, the cutting tool of the hole-making equipment passes through the end connection mechanism 10 and the nose-pressing mechanism 1 to reach the product surface to perform correction work. During the correction process, as the curvature of the product changes, the nose-pressing mechanism 1 is adjusted according to the actual situation to ensure that at least 3 pressure blocks 2 are in contact with the product to be processed during the correction process until all normal correction and hole-making are completed. At this point, the end adjustment and clamping device of the hole-making equipment for variable and high curvature products is used.

[0042] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. An end-effector adjusting and clamping device for hole-making equipment for products with variable or high curvature, characterized in that, include: Nose-pressing mechanism (1) and end-connecting mechanism (10); Among them, the nose pressing mechanism (1) has a plurality of pressure blocks (2) arranged circumferentially on one end face of the nose pressing body, and a sleeve (3) at the other end of the nose pressing body. The sleeve (3) is equipped with a plurality of sets of sliding ball assemblies circumferentially. The sliding ball (7) in each set of sliding ball assemblies extends out of its mounting hole to reach the inner side of the sleeve (3). The sleeve (3) is provided with an annular boss (8) inside, and a circumferential locking tooth (9) is formed circumferentially on the inner wall surface of the annular boss (8) for cooperating with the locking block (17) on the end connecting mechanism (10). The end connection mechanism (10) includes: a hole-making equipment connection part, and a stepped connection part disposed on one end face of the hole-making equipment connection part; the stepped connection part includes: a primary boss (11) disposed on the end face of the hole-making equipment connection part, and a secondary boss (13) disposed on the end face of the primary boss (11); the end of the end connection mechanism (10) connected to the nose-pressing mechanism (1) is configured as a stepped structure, and the annular groove (12) opened around the perimeter of the wall of the primary boss (11) connects with the nose-pressing mechanism (1). Multiple sliding balls enable the two mechanisms to be axially limited and installed. The elastic locking block assembly set on the wall of the secondary boss (13) forms an elastic meshing structure with the peripheral locking teeth (9) of the nose pressing mechanism (1), so that the nose pressing mechanism (1) rotates unidirectionally along the secondary boss (13). Through the rotation of the nose pressing mechanism (1) on the product surface, multiple pressure blocks (2) at its end contact the product surface, and ensure that at least 3 pressure blocks (2) contact the product to be processed during the correction process, thereby realizing the normal correction of products with variable and high curvature.

2. The end-effector adjusting and clamping device for hole-making equipment for products with variable or high curvature as described in claim 1, characterized in that, The nose-pressing mechanism (1) includes: a nose-pressing body, multiple pressure blocks (2), and multiple sets of sliding ball assemblies. Each set of sliding ball assemblies includes: a sliding ball (7), and a bolt (5) and a clamping spring (6) that are fitted together. The nose pressure body is configured as a stepped column structure with a hollow cavity. Multiple pressure blocks (2) are evenly arranged on the end face of the small diameter column along the circumference. The large diameter column is a sleeve (3). Multiple ball mounting holes (4) are evenly opened on the sleeve (3) along the circumference. The ball (7) is installed through each ball mounting hole (4). After the compression spring (6) is inserted into each ball mounting hole (4), it is fixed to the outer end of the ball mounting hole (4) by bolts (5). The ball (7) is pushed out from the inner end of the ball mounting hole (4) to the inner side of the sleeve (3) by the spring force of the compression spring (6).

3. The end-effector adjusting and clamping device for hole-making equipment for products with variable or high curvature according to claim 2, characterized in that, The diameter of the slider (7) is greater than the diameter of the slider mounting hole (4) and less than the diameter of the groove (12). It is used to restrict the slider (7) from sliding out of the inner end of the slider mounting hole (4) of the sleeve (3), and it restricts the installation structure of the sleeve (3) and the first-level boss (11) of the end connection mechanism (10) through the groove (12).

4. The end-effector adjusting and clamping device for hole-making equipment for products with variable or high curvature according to claim 1, characterized in that, The first-level boss (11) has an annular groove (12) around its wall surface that cooperates with the slider (7). This groove is used to limit the axial movement of the two mechanisms after the end connecting mechanism (10) and the nose pressing mechanism (1) are fitted together, through the cooperation of multiple circumferentially arranged sliders (7) and the annular groove (12). The secondary boss (13) has at least one locking block mounting groove (14) on its wall surface. A lower guide pin (15) is provided in the locking block mounting groove (14). An upper guide pin (18) is provided on the lower end face of one end of the locking block (17). The other end of the locking block (17) is installed in the locking block mounting groove (14) by a mounting screw (19), so that the upper guide pin (18) of the locking block (17) and the lower guide pin (15) of the locking block mounting groove (14) are positioned opposite each other. A support spring (16) is fitted between the upper guide pin (18) and the lower guide pin (15) to support the locking block (17).

5. The end-effector adjusting and clamping device for hole-making equipment for products with variable or high curvature according to claim 4, characterized in that, After the end connection mechanism (10) and the nose pressing mechanism (1) are assembled, based on the elastic meshing structure of the support block (17) and the peripheral tooth (9), the opening of the support block (17) meshes with one of the teeth (9), restricting the rotation of the nose pressing mechanism (1) in one direction. When the nose pressing mechanism (1) rotates in another direction, the support block (17) is pressed down and the nose pressing mechanism (1) is rotated. When it rotates to the next tooth (9), the support block (17) pops out under the action of the support spring (16) and meshes with the current tooth (9).

6. A terminal adjusting and clamping device for a hole-making equipment for products with variable or high curvature, as described in any one of claims 1 to 5, characterized in that... The pressure blocks (2) are evenly arranged on the front end face of the nose pressing mechanism (1) in the circumferential direction. There are 8 pressure blocks (2) so that the multiple pressure blocks (2) arranged in the circumferential direction can make multiple contacts with the curved surface of the product, and the hole normal of the product can be determined by the 3 pressure blocks (2).

7. An end-effector adjusting and clamping device for drilling equipment for products with variable or high curvature according to any one of claims 2 to 3, characterized in that, The central axis of the ball mounting hole (4) intersects perpendicularly with the center line of the groove (12).

8. A method of using the end-effector adjustment and clamping device of a hole-making equipment for products with variable or high curvature as described in any one of claims 1 to 7, characterized in that, include: Step 1: Fit the nose pressing mechanism (1) onto one end of the end connecting mechanism (10), and install the end connecting mechanism (10) fitted with the nose pressing mechanism (1) onto the hole making equipment; Step 2: Before performing normal correction on the product to be processed, manually rotate the nose pressing mechanism (1) according to the actual curvature of the product to be processed to ensure that at least 3 pressure blocks (2) at the front end of the nose pressing mechanism (1) are in contact with the surface of the product to be processed. Step 3: Operate the hole-making equipment to correct the normal direction of the product. During the correction process, adjust the nose-pressing mechanism (1) according to the actual situation based on the curvature change of the product, and ensure that at least 3 pressure blocks (2) are in contact with the product to be processed during the correction process until all normal correction and hole-making are completed.

9. A method of using the end-effector adjustment and clamping device of a hole-making equipment for products with variable or high curvature as described in claim 4 or 5, characterized in that, include: Step 1: Fit the nose pressing mechanism (1) onto one end of the end connecting mechanism (10), and install the end connecting mechanism (10) fitted with the nose pressing mechanism (1) onto the hole making equipment; Step 2: Before performing normal correction on the product to be processed, manually rotate the nose pressing mechanism (1) according to the actual curvature of the product to be processed to ensure that at least 3 pressure blocks (2) at the front end of the nose pressing mechanism (1) are in contact with the surface of the product to be processed. Step 3: Operate the hole-making equipment to correct the normal direction of the product. During the correction process, adjust the nose-pressing mechanism (1) according to the actual situation based on the curvature change of the product to ensure that at least 3 pressure blocks (2) are in contact with the product to be processed during the correction process until all normal correction and hole-making are completed. Step 1 includes: Install the block (17) in the block mounting groove (14) using the block mounting screw (19), fit the support spring (16) between the upper guide pin (18) of the block (17) and the lower guide pin (15) in the block mounting groove (14), fit the end connection mechanism (10) into the sleeve (3) of the nose pressing mechanism (1), and insert the block (17) into the tooth (9). Then, put the ball (7) into the ball mounting hole (4), then put in the compression spring (6), and install the bolt (5) to ensure that the part of the ball (7) exposed in the ball mounting hole (4) is completely placed in the groove (12). Connect the end mounting groove of the end connection mechanism (10) to the hole making equipment.

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