Circumferential multi-hole machining device for rotary body part

Abstract

The invention discloses a machining device for multiple holes in the circumference of a rotary body part, belongs to the technical field of drilling machining, and particularly integrates a V-shaped block radial initial positioning mechanism with the adjustable interval, a double-side cavity conical head axial anti-movement mechanism, a lifting drive type downward pressing and stable holding mechanism and an internal expansion type anti-rotation mechanism. The axis of the workpiece is automatically determined through the V-shaped block; a workpiece is axially and circumferentially locked at the same time through a cavity conical head hydraulically driven on the two sides and a piston ejector block of an inner expansion head; and then the whole clamping unit is driven by the lifting driving piece to press downwards, the workpiece is stably embedded into the V-shaped groove, and the radial constraint, the axial constraint and the circumferential constraint are formed. And by combining the indexing driving mechanism and the drilling execution units which are symmetrically arranged up and down, high-precision and high-efficiency circumferential multi-hole machining under one-time clamping of a workpiece is achieved, and the multi-hole machining device is particularly suitable for rotary body parts of different sizes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling processing devices, in particular to a circumferential multi-hole processing device for a rotary part. BACKGROUND

[0002] The description in this part only provides background information related to the present disclosure, and does not constitute prior art.

[0003] The rotary part refers to a symmetrical structure part formed by rotating around an axis, which is widely used in the fields of mechanical manufacturing, environmental protection equipment, etc.

[0004] When the circumferential direction of the rotary part is processed, it is inconvenient to position the rotary part to be processed and determine the workpiece axis, and during the drilling, tapping and other processing of the rotary part, the workpiece is prone to axial movement or rotation, which affects the processing precision. SUMMARY

[0005] The purpose of the present application is to provide a circumferential multi-hole processing device for a rotary part, which creatively integrates four function modules of axis positioning, axial anti-wandering, internal expansion anti-rotation and downward pressing and holding in a compact rotary positioning mechanism, and realizes effective constraint of the full freedom of the thin-walled rotary part through synergistic effect, solving the core pain points of easy movement and deformation during processing.

[0006] The present application provides a circumferential multi-hole processing device for a rotary part, comprising: a rotary positioning mechanism, and a drilling execution unit symmetrically arranged above and below; The rotary positioning mechanism comprises: a U-shaped frame, an integrated controller and a power supply are fixed on the U-shaped frame; The U-shaped frame is integrated with an axis positioning module, an axial anti-wandering module, an internal expansion anti-rotation module and a downward pressing and holding module; The axis positioning module is composed of a V-shaped block with adjustable spacing fixed in the middle of the bottom surface of the inner cavity of the U-shaped frame, and is used for radial primary positioning of the workpiece; The axial anti-wandering module comprises first hydraulic cylinders symmetrically arranged left and right, and an internal expansion head is fixedly assembled at the extension end of the first hydraulic cylinder, and the outer end of the internal expansion head is a hollow conical head; the hollow conical head is inserted and abuts against both ends of the inner cavity of the workpiece to realize axial fixation through driving of the first hydraulic cylinder; The internal expansion anti-rotation module is integrated inside the internal expansion head, and the piston top block inside the internal expansion head is driven to extend outward by hydraulic or pneumatic pressure to expand the inner wall of the workpiece and prevent the workpiece from rotating axially; The downward stable module comprises left and right symmetrical lifting driving members, the movable parts of the lifting driving members are fixedly connected with the first hydraulic cylinder, and are used to drive the axial anti-channeling module and the inner expansion anti-rotation module to synchronously move downward, so that the workpiece is pressed in the V-shaped groove of the axial positioning module, and the lifting driving members are electrically connected with the integrated controller and the power supply; The indexing rotation module comprises a partition driving mechanism fixedly connected with the side of the U-shaped frame, and is used to drive the whole rotary positioning mechanism to index rotation. The inner expansion head, the first hydraulic cylinder and the V-shaped block with adjustable spacing are connected with an external power source through a rotary joint.

[0007] As a further optimization scheme, in order to adjust the distance between the front and rear triangular blocks and the width of the V-shaped groove cavity, and to be suitable for inserting and positioning workpieces with different outer diameters, the V-shaped block with adjustable spacing comprises front and rear symmetrical air cylinders, the telescopic ends of the air cylinders are fixed with triangular blocks, the lower ends of the air cylinders are connected with supporting rods to play a supporting role, and the front and rear triangular blocks are spliced to form the V-shaped groove. The width of the V-shaped groove can be adjusted through the air cylinder drive to adapt to workpieces with different diameters.

[0008] As a further optimization scheme, in order to lift the upper and lower piston top blocks through hydraulic or pneumatic pressure, and to position the inner expansion head by moving the upper and lower piston top blocks outward to abut against the same side of the workpiece cavity, the inner expansion head comprises a coaxial cavity conical head and a cylinder, the outer wall of the cylinder is provided with insertion holes on the upper and lower sides, the cavity conical head is provided with a passage inside and is communicated with the insertion holes on the same side, the piston top block is inserted into the insertion hole, and the piston top block is driven to move outward by introducing pressure medium into the cavity conical head. The outer wall of the cavity conical head is covered with a rubber layer, which is used to protect the inner wall of the workpiece and increase the friction.

[0009] As a further optimization scheme, in order to combine the piezoelectric ceramic to realize real-time feedback of clamping force and prevent workpiece damage caused by over-clamping, a clamping force adjusting structure is further included, which comprises a piezoelectric ceramic embedded in the inner wall of the V-shaped block, and the piezoelectric ceramic, the integrated controller, the power supply and the lifting driving member constitute a closed-loop control.

[0010] As a further optimization scheme, in order to adopt a gradient hardness design, the hardness of the center area is high to ensure the positioning rigidity, and the hardness of the edge area is low to provide elastic buffering and reduce the stress concentration and deformation risk during the machining of thin-walled parts, the outer side of the piston top block is provided with a gradient hardness rubber layer structure, and the hardness thereof decreases from the center to the edge. The gradient hardness rubber layer structure comprises a high-hardness rubber support layer and a low-hardness rubber buffer layer, the high-hardness rubber support layer is fixedly pasted to the middle part of the outer side of the piston top block to realize rigid positioning, and the low-hardness rubber buffer layer is fixedly pasted to the edge of the outer side of the piston top block to provide elastic buffering.

[0011] As a further optimization, in order to drive the first hydraulic cylinders and the inner expansion head on the left and right sides to lift and lower synchronously, the lifting drive component includes a vertical motor, a screw driven by the vertical motor, and a slider screwed to the screw. The first hydraulic cylinder is fixed on the slider, and the rectangular block fixed on the side wall of the slider slides and fits against the inner wall of the U-shaped frame on the same side. A limit cap is fixed at the upper end of the screw.

[0012] As a further optimization, in order to drive the rotary positioning mechanism to perform indexing rotation, the indexing drive mechanism includes a servo motor, a reducer, and an encoder. The output end of the servo motor is fixed and connected to the reducer. The encoder is fixed on the rotating shaft of the reducer. The encoder is electrically connected to the controller and the servo motor to form a closed-loop control.

[0013] As a further optimization, in order to perform multi-hole machining on the outer wall of the indexed and rotated workpiece to achieve a circumferential machining effect, the drilling execution unit includes a second hydraulic cylinder and a multi-axis drill bit fixed to its telescopic end, and the fixed end of the second hydraulic cylinder is connected to a mounting base.

[0014] As a further optimization, in order to drive the rotary positioning mechanism to rotate in an indexing manner through the indexing drive mechanism, the U-shaped frame includes a rectangular base plate and upright plates fixed to the left and right sides of its top surface. The middle part of the side wall of the upright plate is fixedly connected to the indexing drive mechanism through a connecting flange.

[0015] The present invention provides an improved circumferential multi-hole machining apparatus for rotating parts, which has the following improvements and advantages compared with the prior art: I. Innovative "Three-Point Cooperative Positioning" Mechanism: Traditional V-block positioning only provides radial constraint. This invention organically combines the radial positioning of the V-block, the axial locking of the hollow conical head, and the circumferential anti-rotation of the inner expansion head to form a spatially complementary and stable clamping system that simultaneously suppresses potential workpiece movement from three dimensions.

[0016] II. Synergistic Stabilizing Effect of Dynamic Pressing and Internal Expansion: This invention does not simply place the workpiece on the V-block, but actively presses it down through a lifting drive component, "embedding" the workpiece into the V-groove, significantly increasing the normal pressure and positioning stability. Internal expansion under these conditions avoids workpiece lifting or eccentricity that might occur with individual internal expansion, resulting in a more uniform clamping force distribution, which is particularly beneficial for ensuring the machining accuracy of thin-walled workpieces.

[0017] III. Integration of Modularization and Automation: Through adjustable-spacing V-blocks and internal expansion heads, the device can adapt to different workpieces within a certain size range, demonstrating its versatility. All drive modules (hydraulic, pneumatic, and electric) are connected via rotary joints, enabling continuous transmission of power and signals on the rotary mechanism. This makes automatic indexing and continuous processing possible, and when combined with upper and lower multi-axis drill bits, it greatly improves processing efficiency.

[0018] In summary, the technical solution of the present invention is not a simple superposition of existing technologies, but rather achieves a "1+1>2" technical effect through new combination relationships and collaborative working methods among various components, resulting in significant progress in positioning accuracy, anti-movement reliability, and processing efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rotary positioning mechanism of the present invention; Figure 3 This is a schematic cross-sectional view of the internal expansion head structure of the present invention; Figure 4 This is a schematic diagram of the V-shaped block structure with adjustable spacing according to the present invention; Figure 5 This is a schematic diagram of the lifting drive component structure of the present invention; Figure 6 This is a schematic diagram of the V-shaped groove structure of the present invention; Figure 7 This is a schematic diagram of the drilling execution unit structure of the present invention; Figure 8 This is a schematic diagram of the gradient hardness rubber layer structure of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1-Rotary positioning mechanism, 11-Rectangular base plate, 12-Upright plate, 13-Lifting drive component, 131-Vertical motor, 132-Screw, 133-Limit cap, 134-Slider, 14-First hydraulic cylinder, 15-Internal expansion head, 151-Hollow conical head, 152-Cylinder, 153-Channel, 154-Insertion hole, 155-Piston top block, 156-High-hardness rubber support layer, 157-Low-hardness rubber buffer Layer, 16-Adjustable spacing V-block, 161-Support rod, 162-Cylinder, 163-Triangular block, 17-Rectangular block, 2-Indexing drive mechanism, 21-Servo motor, 22-Reducer, 23-Encoder, 3-Controller, 4-Drilling execution unit, 41-Second hydraulic cylinder, 42-Mounting base, 43-Multi-axis drill bit, 5-Rotary joint, 6-Integrated controller and power supply, 7-Piezoelectric ceramic, 8-Rubber layer. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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, they should not be construed as limiting this invention.

[0024] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Please see Figures 1-8 The present invention provides a technical solution: a multi-hole machining device for rotating parts, comprising: Rotary positioning mechanism 1, and drilling execution units 4 arranged symmetrically at the top and bottom; Rotary positioning mechanism 1 includes: A U-shaped frame on which an integrated controller and power supply 6 are fixed; The U-shaped frame integrates a shaft positioning module, an axial anti-slip module, an internal expansion anti-rotation module, and a downward pressure stabilization module. The axial positioning module consists of V-shaped blocks 16 with adjustable spacing, fixed in the middle of the bottom surface of the U-shaped frame cavity, and is used for initial radial positioning of the workpiece. The axial anti-slip module includes a first hydraulic cylinder 14 symmetrically arranged on the left and right. The telescopic end of the first hydraulic cylinder 14 is fixedly equipped with an inner expansion head 15. The outer end of the inner expansion head 15 is a hollow conical head 151. The hollow conical head 151 is driven by the first hydraulic cylinder 14 to insert into and abut against both ends of the inner cavity of the workpiece to achieve axial fixation. The internal expansion anti-rotation module is integrated inside the internal expansion head 15. It uses hydraulic or pneumatic pressure to drive the piston top block 155 inside to extend outward to expand the inner wall of the workpiece and prevent the workpiece from rotating axially. The downward stabilizing module includes a lifting drive component 13 arranged symmetrically on the left and right. The movable part of the lifting drive component 13 is connected and fixed to the first hydraulic cylinder 14, which is used to drive the axial anti-slip module and the internal expansion anti-rotation module to move down synchronously and press the workpiece into the V-groove of the shaft positioning module. The lifting drive component 13 is electrically connected to the integrated controller and the power supply 6. The indexing rotation module includes a partition drive mechanism 2 fixedly connected to the side of the U-shaped frame, which is used to drive the entire rotary positioning mechanism 1 to perform indexing rotation. The internal expansion head 15, the first hydraulic cylinder 14, and the V-block 16 with adjustable spacing are connected to an external power source via a rotary joint 5.

[0026] Specifically, in this embodiment, the axial positioning module, axial anti-slip module, internal expansion anti-rotation module, and downward pressure stabilization module are integrated on a U-shaped frame to form a rotary positioning mechanism. The rotary positioning mechanism 1 is driven to rotate in an indexing manner by the indexing rotation module. The drilling execution unit 4, which is symmetrically distributed on the upper and lower sides, performs multi-hole processing on the outer wall of the sleeve and tube-type rotary parts that are stabilized and limited by the rotating rotary positioning mechanism 1. Furthermore, the radial positioning of the V-block 16 with adjustable spacing, the axial locking of the hollow conical head 151, and the circumferential anti-rotation of the inner expansion head 15 are organically combined to form a spatially complementary and stable clamping system, which simultaneously suppresses the potential movement of the workpiece from three dimensions. More specifically, the synergistic stabilizing effect of dynamic pressing and internal expansion: This invention does not simply place the workpiece on the V-shaped block 16 with adjustable spacing, but actively presses down through the lifting drive component 13 to "embed" the workpiece into the V-shaped groove, which significantly increases the positive pressure and positioning stability. Under this state, the internal expansion head 15 then expands internally, avoiding the workpiece lifting or eccentricity that may be caused by the internal expansion alone. The clamping force distribution is more uniform, which is especially beneficial to ensuring the processing accuracy of thin-walled workpieces. Understandably, the integration of modularity and automation is evident: through the adjustable spacing of the V-blocks 16 and the internal expansion head 15, the device can adapt to different workpieces within a certain size range, demonstrating its versatility; all drive modules (hydraulic, pneumatic, electric) are connected through the rotary joint 5, realizing the continuous transmission of power and signals on the rotary mechanism, making automatic indexing and continuous processing possible, and greatly improving processing efficiency when combined with the upper and lower multi-axis drill bits.

[0027] In some embodiments, the V-block 16 with adjustable spacing includes cylinders 162 arranged symmetrically at the front and rear. A triangular block 163 is fixed to the telescopic end of the cylinder 162. A support rod 161 is connected to the lower end of the cylinder 162 to provide support. The front and rear triangular blocks 163 are spliced ​​together to form a V-groove. The cylinder 162 drives the adjustable width of the V-groove to adapt to rotating parts of different diameters, such as sleeves and tubes.

[0028] Specifically in this embodiment, the front and rear support rods 161 are used to support and fix the cylinder 162, and the front and rear cylinders 162 are connected to an external air pressure system to perform air pressure drive synchronously. Furthermore, the two cylinders 162 drive the two triangular blocks 163 to move in opposite directions or in the opposite direction, adjusting the distance between the two triangular blocks 163, which is suitable for the insertion and positioning of rotating parts such as sleeves and tubes with different outer diameters. More specifically, the two triangular blocks 163 form a V-shaped groove, and the groove formed between them is V-shaped. The insertion drive of the sleeve and tube type rotating parts can determine the workpiece axis. Understandably, the distance between the two triangular blocks 163 needs to be less than the outer diameter of the sleeve or tube-type rotating part to be processed; Sleeve and tube type rotating parts refer to thin-walled sleeve type rotating parts and tube type rotating parts.

[0029] In some embodiments, the internal expansion head 15 includes a hollow conical head 151 and a cylinder 152 arranged coaxially. The cylinder 152 has insertion holes 154 on both the upper and lower sides of its outer wall. The hollow conical head 151 has a channel 153 inside that communicates with the insertion holes 154 on the upper and lower sides. The piston top block 155 is inserted into the insertion hole 154. The piston top block 155 is driven to move outward by introducing a pressure medium into the hollow conical head 151. The outer wall of the hollow conical head 151 is covered with a rubber layer 8, which is used to protect the inner wall of the sleeve and tubular rotating parts and increase the friction.

[0030] Specifically, in this embodiment, the two hollow conical heads 151 are inserted into the inner walls of the sleeve and tube rotating parts under the drive of the first hydraulic cylinder 14 to perform axial positioning of the sleeve and tube rotating parts. Furthermore, the outer wall of the hollow conical head 151 is connected to hydraulic or pneumatic pressure, which enters the inner cavity and channel 153 of the hollow conical head 151 through hydraulic or pneumatic pressure, and then pushes up the upper and lower piston top blocks 155. The upper and lower piston top blocks 155 move outward and abut against the same side of the inner cavity of the sleeve or tube-type rotating body part for internal expansion positioning. More specifically, the rubber layer 8 is designed to prevent the outer wall of the hollow conical head 151 from directly contacting the inner wall of the sleeve or tube-like rotating body parts, thereby reducing wear on the inner wall of the sleeve or tube-like rotating body parts. It is understandable that this solution utilizes an external hydraulic system for hydraulic supply, which is connected to the rotary joint 5 via pipelines; and utilizes an external pneumatic system for pneumatic supply, which is connected to the rotary joint 5 via pipelines.

[0031] In some embodiments, a clamping force adjustment structure is also included, including a piezoelectric ceramic 7 embedded in the inner wall of the V-block 16. The piezoelectric ceramic 7, together with the integrated controller, power supply 6, and lifting drive 13, forms a closed-loop control. The piezoelectric ceramic 7 is a prior art application. Combined with the real-time feedback of clamping force by the piezoelectric ceramic 7, workpiece damage caused by over-clamping is prevented.

[0032] In some embodiments, the outer surface of the piston top block 155 is fitted with a gradient hardness rubber layer structure, the hardness of which decreases from the center to the edge. The gradient hardness rubber layer structure includes a high-hardness rubber support layer 156 and a low-hardness rubber buffer layer 157. The high-hardness rubber support layer 156 is rigidly fixed to the middle of the outer side of the piston top block 155, and the low-hardness rubber buffer layer 157 is elastically fixed to the edge of the outer side of the piston top block 155.

[0033] Specifically, in this embodiment, the hardness of the high-hardness rubber support layer 156 is greater than the hardness of the low-hardness rubber buffer layer 157. Furthermore, the gradient hardness rubber layer structure adopts a gradient hardness design. The high hardness of the high hardness rubber support layer 156 in the central area ensures positioning rigidity, while the low hardness of the low hardness rubber buffer layer 157 in the edge area provides elastic buffering, reducing stress concentration and deformation risks during the processing of thin-walled parts.

[0034] In some embodiments, the lifting drive 13 includes a vertical motor 131, a screw 132 driven by the vertical motor 131, and a slider 134 screwed to the screw 132. A first hydraulic cylinder 14 is fixed to the slider 134. A rectangular block 17 is fixed to the side wall of the slider 134 and slides against the inner wall of the U-shaped frame on the same side. A limit cap 133 is fixed to the upper end of the screw 132.

[0035] Specifically in this embodiment, the two vertical motors 131 are powered and controlled by an integrated controller and a power supply 6. The integrated controller and power supply 6 include a rechargeable battery and a controller, and the two vertical motors 131 are controlled to work synchronously by the controller. Furthermore, the vertical motor 131 drives the screw 132 to rotate, and the screw 132 drives the slider 134 screwed to its outer wall to drive the rectangular block 17 fixed on it to slide up and down along the inner wall of the U-shaped frame. More specifically, the lifting and lowering of the slider 134 causes the first hydraulic cylinder 14 and the inner expansion head 15 fixed on it to move accordingly, and the vertical motors 131 on both sides work synchronously to drive the first hydraulic cylinder 14 and the inner expansion head 15 on the left and right to lift and lower synchronously. It is understandable that the limit cap 133 blocks the upper end of the screw 132, limiting and blocking the position of the slider 134 on the screw 132, and preventing the slider 134 from detaching from the screw 132.

[0036] In some embodiments, the indexing drive mechanism 2 includes a servo motor 21, a reducer 22 and an encoder 23. The output end of the servo motor 21 is fixed and connected to the reducer 22. The encoder 23 is fixed on the rotating shaft of the reducer 22. The encoder 23 is electrically connected to the controller 3 and the servo motor 21 to form a closed-loop control.

[0037] Specifically, in this embodiment, the reducer 22 is a high-precision reducer, and the encoder 23 is a high-precision encoder to ensure indexing accuracy; Furthermore, an encoder 23 and a controller 3 are installed on the servo motor 21 to form a closed-loop or semi-closed-loop control, providing real-time feedback on the rotation angle position to ensure accurate indexing.

[0038] In some embodiments, the drilling execution unit 4 includes a second hydraulic cylinder 41 and a multi-axis drill bit 43 fixed to its telescopic end, and the fixed end of the second hydraulic cylinder 41 is connected to a mounting base 42.

[0039] Specifically in this embodiment, the second hydraulic cylinder 41 drives the multi-axis drill bit 43 to move up and down. The multi-axis drill bit 43 is a direct application of existing technology and can process multiple holes at once, thereby improving processing efficiency. Furthermore, the multi-spindle drill bit 43 can be replaced with normal drilling equipment to ensure applicability; More specifically, two drilling execution units 4 are symmetrically arranged vertically, which can drill holes in symmetrical positions in the circumferential direction of sleeve and tube rotating parts when needed, thereby improving processing efficiency. Understandably, the drilling execution unit 4 is fixed to the frame by the mounting base 42.

[0040] In some embodiments, the U-shaped frame includes a rectangular base plate 11 and upright plates 12 fixed to the left and right sides of its top surface. The middle part of the side wall of the upright plate 12 is fixedly connected to the indexing drive mechanism 2 through a connecting flange.

[0041] Specifically, in this embodiment, the controller 3 is used to control the indexing drive mechanism 2 to perform indexing rotation, with each rotation being 45°. Furthermore, the flange fixed between the rotation of the indexing drive mechanism 2 and the middle of the outer wall of the right vertical plate 12 can be separated from the rotary positioning mechanism 1 by removing the flange bolts, which facilitates separate inspection and maintenance.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for processing a plurality of holes in the circumferential direction of a part of a rotating body, characterized by comprising: Comprise: Rotary positioning mechanism (1), and the drilling execution unit (4) arranged symmetrically up and down; The rotary positioning mechanism (1) comprises: The axial positioning module is composed of the spacing adjustable V-shaped block (16) fixed in the middle of the bottom surface of the inner cavity of the U-shaped frame, which is used for the initial positioning of the workpiece in the radial direction; The axial anti-channeling module comprises first hydraulic cylinders (14) arranged symmetrically left and right, the telescopic end of the first hydraulic cylinder (14) is fixedly provided with an internal inflation head (15), the outer side end of the internal inflation head (15) is a hollow conical head (151); the hollow conical head (151) is driven by the first hydraulic cylinder (14) to be inserted into and abut against the two ends of the inner cavity of the workpiece to achieve axial fixation; The internal inflation anti-rotation module is integrated in the internal inflation head (15), and the piston top block (155) in the internal inflation anti-rotation module is driven by hydraulic or pneumatic pressure to extend outward to inflate the inner wall of the workpiece, thereby preventing the workpiece from rotating axially; The downward stable module comprises lifting driving members (13) arranged symmetrically left and right, the movable part of the lifting driving member (13) is connected and fixed with the first hydraulic cylinder (14), which is used to drive the axial anti-channeling module and the internal inflation anti-rotation module to move downward synchronously, so as to press the workpiece tightly in the V-shaped groove of the axial positioning module; The indexing rotation module comprises a partition driving mechanism (2) fixedly connected with the side of the U-shaped frame, which is used to drive the whole rotary positioning mechanism (1) to rotate by indexing; Wherein, the internal inflation head (15), the first hydraulic cylinder (14) and the spacing adjustable V-shaped block (16) are connected with an external power source through a rotary joint (5).

2. The apparatus for circular multi-hole processing of a revolving body part according to claim 1, wherein The spacing adjustable V-shaped block (16) comprises air cylinders (162) arranged symmetrically front and back, the telescopic end of the air cylinder (162) is fixedly provided with a triangular block (163), the lower end of the air cylinder (162) is connected with a supporting rod (161) to play a supporting role, and the front and back triangular blocks (163) are spliced to form the V-shaped groove, and the width of the V-shaped groove can be adjusted by the air cylinder (162) to adapt to workpieces of different diameters.

3. The apparatus for circular multi-hole processing of a revolving body part according to claim 1, wherein The internal inflation head (15) comprises a hollow conical head (151) and a cylindrical body (152) arranged coaxially, the outer wall of the cylindrical body (152) is provided with insertion holes (154) on the upper and lower sides, the hollow conical head (151) is provided with a channel (153) in the inside and is communicated with the insertion holes (154) on the same side, the piston top block (155) is inserted into the insertion hole (154), and the piston top block (155) is driven to move outward by introducing pressure medium into the hollow conical head (151); The outer wall of the hollow conical head (151) is covered with a rubber layer (8) for protecting the inner wall of the workpiece and increasing the friction.

4. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to claim 1, wherein It also comprises a clamping force adjusting structure, which comprises a piezoelectric ceramic (7) embeddedly assembled in the inner wall of the V-shaped block (16), and the piezoelectric ceramic (7) constitutes a closed loop control with an integrated controller, a power supply (6) and a lifting driving member (13).

5. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to claim 1, wherein The outer side of the piston top block (155) is provided with a gradient hardness rubber layer structure, and the hardness decreases from the center to the edge.

6. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to claim 5, wherein The gradient hardness rubber layer structure comprises a high hardness rubber support layer (156) and a low hardness rubber buffer layer (157), the high hardness rubber support layer (156) is pasted and fixed in the middle of the outer side of the piston top block (155) to rigidly position, and the low hardness rubber buffer layer (157) is pasted and fixed at the edge of the outer side of the piston top block (155) to provide elastic buffering.

7. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to Claim 1, wherein The lifting driving element (13) comprises a vertical motor (131), a screw rod (132) driven by the vertical motor (131) and a sliding block (134) screwed with the screw rod (132), the first hydraulic cylinder (14) is fixed on the sliding block (134), the side wall of the sliding block (134) is fixed with a rectangular block (17) which is slidably attached to the inner wall of the U-shaped frame, and the upper end of the screw rod (132) is fixed with a limiting cap (133).

8. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to Claim 1, wherein The indexing driving mechanism (2) comprises a servo motor (21), a speed reducer (22) and an encoder (23), the output end of the servo motor (21) is fixed and shaft-connected with the speed reducer (22), the encoder (23) is fixed on the rotating shaft of the speed reducer (22), and the encoder (23) is electrically connected with the controller (3) and the servo motor (21) to form a closed loop control.

9. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to Claim 1, wherein The drilling execution unit (4) comprises a second hydraulic cylinder (41) and a multi-shaft drill bit (43) fixed at the telescopic end of the second hydraulic cylinder (41), and the fixed end of the second hydraulic cylinder (41) is connected with a mounting seat (42).

10. The apparatus for circularly processing a plurality of holes in a circumferential direction of a rotary member according to Claim 1, wherein The U-shaped frame comprises a rectangular bottom plate (11) and vertical plates (12) fixed on the top surface of the rectangular bottom plate (11), the vertical plates (12) are fixedly connected with the indexing driving mechanism (2) through connecting flanges in the middle of the side walls.

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