A turbocharger intermediate body bore machining device

Abstract

The utility model discloses a turbocharger intermediate body hole processingequipment relates to turbocharger intermediate body processing technical field, including frame and the drilling device that can be adjusted along the height direction of frame, drilling device drive end fixedly connected with drill bit, the frame bottom fixed mounting has the working face, the working face top fixed mounting has the base, the base top rotationally arranged with the adjusting seat for placing intermediate body work piece, the utility model lifting seat is wholly accomodated in fixed cylinder under non - working state, effectively avoided the wear and tear of the slot in the knock of workpiece in daily operation, guaranteed the cooperation accuracy when the subsequent drill bushing installation, lifting seat rises when processing, and the metal plug of drill bushing bottom end inserts the slot and is fixed by magnetic attraction piece adsorption, realizes the stable connection of drill bushing and adjusting seat, and this structure effectively eliminates the shaking deviation problem of traditional manual plug -in installation drill bushing because of cooperation gap, and the drill bit guiding precision has been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger intermediate body processing technology, specifically a turbocharger intermediate body hole processing device. Background Technology

[0002] The turbocharger intermediate body is the core load-bearing component of the turbocharger. It has multiple sets of lubricating oil holes and mounting holes with different inclination angles distributed around its circumference. This type of inclined hole process is generally completed on a vertical drilling machine. At present, the commonly used tooling for the machining of inclined holes in the intermediate body in the industry mostly adopts a structure of fixed inclined worktable with positioning column: the worktable is preset with a fixed inclination angle, and the table surface is fixed with a positioning column that matches the inner hole of the intermediate body; during machining, the operator manually puts the intermediate body workpiece onto the positioning column, and relies on the clearance fit between the column and the inner hole to achieve preliminary radial positioning. Then, the drill bushing is manually inserted into the top of the column and aligned with the hole to be machined on the workpiece. Finally, the operator manually controls the feed of the drilling machine to complete the inclined hole drilling. The existing positioning column and intermediate body hole only have a clearance fit and do not have radial expansion and clamping function. There is a natural fit clearance between the workpiece and the column. The radial cutting force of the drill bit on the workpiece can easily cause the workpiece to move radially and deviate at an angle. This directly leads to the position accuracy and axial angle of the inclined hole exceeding the tolerance range. It is impossible to guarantee the diameter accuracy and assembly consistency of the intermediate body oil passage hole. At the same time, there is also a fit clearance between the manually inserted drill bushing and the column. During the drilling process, the drill bushing is easily shaken and deviated by the radial force of the drill bit. The drill bit guiding accuracy is insufficient, which can easily lead to problems such as excessive hole wall roughness and severe burrs at the hole opening. In severe cases, it can also cause the drill bit to break and the workpiece to be scrapped. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a turbocharger intermediate body hole machining device, which solves the technical problem that existing devices are prone to shaking and displacement of the drill bushing and workpiece during hole machining, thus affecting the drilling effect. This addresses the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a turbocharger intermediate body hole processing device, including a frame and a drilling device that can be adjusted along the height direction of the frame, a drill bit is fixedly connected to the drive end of the drilling device, a working surface is fixedly installed at the bottom end of the frame, a base is fixedly installed at the top end of the working surface, and an adjustment seat for placing intermediate body workpieces is rotatably provided at the top end of the base. A drive assembly is fixedly installed at the bottom of the adjustment seat. A bidirectional screw is rotatably connected to the drive assembly at the top of the adjustment seat. A lifting seat that can move along its height direction is threadedly connected to the top of the bidirectional screw. A slot is opened at the top of the lifting seat. A drill sleeve is provided above the adjustment seat. A metal plug corresponding to the slot is fixedly installed at the bottom of the drill sleeve. A magnetic block for adsorbing the metal plug is embedded at the bottom of the slot. The bottom end of the bidirectional screw is screwed with a clamping assembly for clamping the inner hole of the intermediate workpiece.

[0005] Preferably, a fixed cylinder is sleeved on the outer side of the bidirectional screw, the top end of the lifting seat can extend from the top end of the fixed cylinder, and the two ends of the lifting seat are slidably connected to the inner walls of the two ends of the fixed cylinder.

[0006] Preferably, the clamping assembly includes a tapered block that is threaded to the bottom end of the bidirectional screw. The two ends of the tapered block are slidably connected to the inner walls of both sides of the fixed cylinder. A pair of through holes are provided at both ends of the fixed cylinder. A pair of wedge blocks corresponding to the tapered block are slidably disposed in the pair of through holes. A pair of first spring rods for driving the wedge blocks to reset are fixedly installed on the inner wall of the fixed cylinder.

[0007] Preferably, the drive assembly includes a worm gear rotatably disposed at the bottom end of the adjusting seat, a worm wheel corresponding to the worm gear being fixedly connected to the bottom end of the bidirectional screw, a drive rod being connected to the worm gear via belt drive, an adjusting screw being connected to the drive rod via belt drive, and a rotating handle being fixedly installed at one end of the worm gear.

[0008] Preferably, the top of the adjusting seat is provided with a strip-shaped through groove, and a movable seat that is threadedly connected to the adjusting screw is slidably provided along the length of the strip-shaped through groove. An assembly seat is inserted into the top of the movable seat, and a movable limiting seat is provided at the front end of the assembly seat. The movable limiting seat is floatingly connected to the assembly seat through a second spring rod.

[0009] Preferably, a protective shell for protecting components such as the worm gear, worm wheel, transmission rod, and adjusting screw is fixedly installed at the bottom of the adjusting seat.

[0010] Preferably, the strip groove is provided with a telescopic protective sleeve to prevent waste debris from entering the interior of the protective shell.

[0011] This utility model provides a device for machining intermediate body holes in a turbocharger, which has the following advantages: 1. In this utility model, the lifting seat is fully retracted into the fixed cylinder when not in operation, effectively avoiding collisions with the workpiece during daily operation that could cause wear on the slot and ensuring the fitting accuracy during subsequent drill bushing installation. During processing, the lifting seat rises, and the metal insert at the bottom of the drill bushing is inserted into the slot and attracted and fixed by the magnetic block, achieving a stable connection between the drill bushing and the adjusting seat. This structure effectively eliminates the shaking and offset problem caused by the fitting gap in traditional manual drill bushing installation, significantly improves the drill bit guiding accuracy, avoids the risk of excessive hole wall roughness and drill bit breakage, and further ensures the quality of drilling processing. 2. This utility model uses a drive assembly to raise and lower the tapered block at the bottom of the bidirectional screw, pushing the wedge block to extend radially and tighten the inner wall of the intermediate body, thus achieving a tight, gapless fixation between the intermediate body and the adjusting seat. This effectively eliminates the radial movement problem caused by the clearance fit between the traditional positioning column and the inner hole. At the same time, the drive assembly drives the moving limiting seat to slide along the strip groove via the worm gear, transmission rod, and adjusting screw, circumferentially limiting the intermediate body from the outside, preventing the workpiece from deflecting during drilling. The coordinated internal and external positioning significantly improves the positional accuracy and axial angle accuracy of the inclined hole machining. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the working surface of this utility model; Figure 3 This is a three-dimensional sectional view of the adjustment seat of this utility model; Figure 4 This is a front sectional view of the adjustment seat of this utility model; Figure 5 for Figure 4 A magnified view of part A in the image; Figure 6 This is a three-dimensional structural diagram of the drive component of this utility model; Figure 7 This is a three-dimensional sectional view of the lifting seat of this utility model.

[0013] In the diagram: 1. Frame; 2. Drilling device; 3. Drill bit; 4. Working face; 5. Base; 6. Adjusting seat; 7. Bidirectional screw; 8. Lifting seat; 9. Slot; 10. Drill sleeve; 11. Metal insert; 12. Magnetic block; 13. Fixed cylinder; 14. Conical block; 15. Wedge block; 16. First spring rod; 17. Worm gear; 18. Worm wheel; 19. Transmission rod; 20. Adjusting screw; 21. Rotating handle; 22. Strip groove; 23. Moving seat; 24. Assembly seat; 25. Moving limit seat; 26. Second spring rod; 27. Protective shell; 28. Telescopic protective sleeve. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figures 1-7 This utility model provides a technical solution: a turbocharger intermediate body hole processing device, including a frame 1 and a drilling device 2 that can be adjusted along the height direction of the frame 1. A drill bit 3 is fixedly connected to the drive end of the drilling device 2. A working surface 4 is fixedly installed at the bottom end of the frame 1. A base 5 is fixedly installed at the top end of the working surface 4. An adjustment seat 6 for placing intermediate body workpieces is rotatably set at the top end of the base 5. The operator can place the intermediate body workpieces at the top end of the adjustment seat 6. A drive assembly is fixedly installed at the bottom of the adjusting seat 6. A bidirectional screw 7, which is rotatably connected to the drive assembly, is rotatably installed at the top of the adjusting seat 6. A lifting seat 8, which can move along its height direction, is threadedly connected to the top of the bidirectional screw 7. The operator can use the drive assembly in conjunction with the bidirectional screw 7 to drive the lifting seat 8 to rise, so that the lifting seat 8 reaches the specified height. A slot 9 is opened at the top of the lifting seat 8. A drill sleeve 10 is set above the adjusting seat 6. A metal plug 11 corresponding to the slot 9 is fixedly installed at the bottom of the drill sleeve 10. A magnetic block 12 for attracting the metal plug 11 is embedded at the bottom of the slot 9. The metal plug 11 at the bottom of the drill sleeve 10 can be inserted into the slot 9. At this time, the magnetic block 12 will attract the metal plug 11, effectively preventing the drill sleeve 10 from radially and circumferentially deflecting, and ensuring the accuracy of subsequent drilling operations. The bottom end of the bidirectional screw 7 is screwed with a clamping component for clamping the inner hole of the intermediate workpiece, which can perform inner hole clamping operation on the intermediate workpiece and increase the stability of the intermediate workpiece.

[0016] As an embodiment of this utility model, a fixed cylinder 13 is sleeved on the outer side of the bidirectional screw 7, and the top end of the lifting seat 8 can extend from the top end of the fixed cylinder 13. The two ends of the lifting seat 8 are slidably connected to the inner walls of the two ends of the fixed cylinder 13. When not in operation, the lifting seat 8 will retract into the fixed cylinder 13, thereby reducing the collision between the workpiece and the slot 9 at the top end of the lifting seat 8, reducing the wear of the slot 9, thereby increasing the connection accuracy between the drill sleeve 10 and the lifting seat 8, and thus ensuring the subsequent drilling effect. Preferably, an elastic limiting ring can be added inside the slot 9, and an annular groove corresponding to the elastic limiting ring is opened on the metal plug 11 to increase the insertion stability between the metal plug 11 and the slot 9.

[0017] As an embodiment of this utility model, the clamping assembly includes a conical block 14 that is threadedly connected to the bottom end of the bidirectional screw 7. The two ends of the conical block 14 are slidably connected to the inner walls of both sides of the fixed cylinder 13. A pair of through holes are provided at both ends of the fixed cylinder 13. A pair of wedge blocks 15 corresponding to the conical block 14 are slidably disposed in the pair of through holes. A pair of first spring rods 16 for driving the wedge blocks 15 to reset are fixedly installed on the inner wall of the fixed cylinder 13. When the driving assembly drives the bidirectional screw 7 to rotate, it will drive the lifting seat 8 to rise. At this time, the conical block 14 will move downward and push the two wedge blocks 15 to extend out from the through holes and fix the inner hole of the intermediate body, thereby ensuring the stability of the intermediate workpiece. The first spring rods 16 can drive the wedge blocks 15 to reset after the conical block 14 is reset.

[0018] As an embodiment of this utility model, the driving assembly includes a worm gear 17 rotatably mounted at the bottom of the adjusting seat 6, a worm wheel 18 corresponding to the worm gear 17 fixedly connected to the bottom of the bidirectional screw 7, a transmission rod 19 connected to the worm gear 17 via a belt drive, an adjusting screw 20 connected to the transmission rod 19 via a transmission drive, and a rotating handle 21 fixedly mounted at one end of the worm gear 17. After the intermediate body is placed on the top of the adjusting seat 6 and sleeved on the outside of the fixed cylinder 13, the operator can rotate the handle 21, which drives the worm wheel 18 and the bidirectional screw 7 to rotate through the worm gear 17, thereby completing the above-mentioned inner hole fixing and lifting seat 8 lifting operations. The worm gear 17 and the transmission rod 19 are connected via a belt drive, and the transmission rod 19 is connected to the adjusting screw 20 via a bevel gear. The operator can rotate the handle 21 to synchronously drive the above components to complete the transmission effect.

[0019] As an embodiment of this utility model, the top of the adjusting seat 6 is provided with a strip-shaped through groove 22. A movable seat 23 is slidably provided along the length direction of the strip-shaped through groove 22 and threadedly connected to the adjusting screw 20. An assembly seat 24 is inserted into the top of the movable seat 23. A movable limiting seat 25 is provided at the front end of the assembly seat 24. The movable limiting seat 25 is floatingly connected to the assembly seat 24 through a second spring rod 26. After rotating the handle 21, the movable seat 23 will slide along the length direction of the strip-shaped through groove 22, thereby moving the component inserted with it and making the movable limiting seat 25 contact the plane on the intermediate workpiece, preventing the intermediate workpiece from rotating circumferentially during subsequent drilling operations. The assembly seat 24 and the movable seat 23 are inserted, and a fastening bolt is provided at the insertion point. The second spring rod 26 can ensure that the movable limiting seat 25 and the intermediate workpiece are stably attached.

[0020] As an embodiment of this utility model, a protective shell 27 is fixedly installed at the bottom of the adjusting seat 6 to protect components such as the worm gear 17, worm wheel 18, transmission rod 19, and adjusting screw 20, so as to prevent the waste chips generated during drilling operations from entering the gaps between the multiple components and affecting their transmission effect.

[0021] As an embodiment of this utility model, a telescopic protective sleeve 28 is provided in the strip groove 22 to prevent waste debris from entering the interior of the protective shell 27, thereby preventing waste debris from entering the interior of the protective shell 27 through the strip groove 22.

[0022] Those skilled in the art can connect all electrical components in this case to their compatible power supplies via wires, and appropriate controllers should be selected according to the actual situation to meet control requirements. The specific connection and control sequence are well-known technologies and will not be described in detail here.

[0023] Working principle and usage process of this utility model: Workpiece installation and initial positioning stage: The operator puts the turbocharger intermediate workpiece to be processed on the outside of the fixed cylinder 13 at the top of the adjusting seat 6. The outer wall of the fixed cylinder 13 and the inner hole of the intermediate workpiece form a preliminary clearance fit. The bottom of the workpiece sits on the top surface of the adjusting seat 6. According to the design angle of the inclined hole to be processed on the intermediate workpiece, the operator rotates the adjusting seat 6 at the top of the base 5 to adjust the adjusting seat 6 and the workpiece as a whole to the required tilt angle. When the inclined hole is processed, the workpiece is tilted so that the axis of the inclined hole is turned vertical so that the drill bit 3 can feed. After the angle of the adjusting seat 6 is adjusted to the position, it is locked and fixed. Workpiece inner hole radial clamping and drill sleeve 10 positioning and installation stage: The operator manually rotates the rotating handle 21 at one end of the drive assembly, the handle drives the worm 17 to rotate, the worm 17 meshes with the worm wheel 18 for transmission, the worm wheel 18 is fixedly connected to the bottom end of the bidirectional screw 7, driving the bidirectional screw 7 to rotate as a whole, the bottom end of the bidirectional screw 7 is threaded with a conical block 14, the two ends of the conical block 14 are slidably connected to the inner walls of both sides of the fixed cylinder 13 (restricted from circumferential rotation), when the bidirectional screw 7 rotates, the conical block 14 moves downward along the bidirectional screw 7, during the downward movement of the conical block 14, its cone The outer wall of the cone pushes a pair of wedge blocks 15, which are slidably disposed in the through holes at both ends of the fixed cylinder 13, to extend radially outward. The wedge blocks 15 extend from the through holes in the side wall of the fixed cylinder 13 and press against the inner wall of the intermediate cylinder, thereby achieving radial expansion and clamping of the inner hole of the workpiece. This expansion force eliminates the fit clearance between the workpiece and the fixed cylinder 13, effectively preventing the workpiece from radially moving or angularly deviating during subsequent drilling. The cone block 14 is kept in the clamping position under the self-locking action of the bidirectional screw 7, and the wedge blocks 15 continuously apply expansion force to the inner wall of the intermediate cylinder, ensuring that the position of the workpiece is stable throughout the drilling process. As the conical block 14 descends, the lifting seat 8, which is threaded to the top of the bidirectional screw 7, rises vertically along the inner wall of the fixed cylinder 13. The two ends of the lifting seat 8 are slidably connected to the inner walls of the two ends of the fixed cylinder 13. It extends from the top of the fixed cylinder 13 to a preset height. The operator places the drill sleeve 10 (an auxiliary guide with a drill bit 3 guide hole at the top and a metal insert 11 fixed at the bottom) on the top of the fixed intermediate workpiece. At this time, the drill sleeve 10 is above the lifting seat 8. The metal insert 11 at the bottom of the drill sleeve 10 is aligned with the slot 9 at the top of the lifting seat 8 and inserted. The magnetic block 12 embedded at the bottom of the slot 9 generates an adsorption force on the metal insert 11, which firmly connects the drill sleeve 10 and the lifting seat 8. This eliminates the shaking and offset problem caused by the fit clearance when manually inserting the drill sleeve 10. The center of the guide hole of the drill sleeve 10 coincides with the axis of the inclined hole to be processed in the intermediate workpiece. Outer circumferential limiting stage: In the same driving action of the operator turning the handle 21, the worm gear 17 is connected to the transmission rod 19 through the belt drive, and the transmission rod 19 is connected to the adjusting screw 20 through the bevel gear drive, driving the moving seat 23 to slide along the strip through groove 22 at the top of the adjusting seat 6. The assembly seat 24 inserted at the top of the moving seat 23 and the moving limiting seat 25 at the front end of the assembly seat 24 move towards the workpiece with the moving seat 23 until the moving limiting seat 25 contacts the process boss on the outer side of the intermediate workpiece. The moving limiting seat 25 is floatingly connected to the assembly seat 24 through the second spring rod 26, which can adaptively compensate for the workpiece shape error and ensure stable contact with the workpiece surface. The movable limiting seat 25 applies a circumferential limiting force to the outer wall of the workpiece, and works together with the expansion and clamping of the inner hole wedge block 15 to prevent the workpiece from circumferentially deflecting during the drilling process, thereby further improving the positional accuracy and axial angle accuracy of the inclined hole machining. Drilling stage: The drilling device 2 at the top of the frame 1 is started, and the drill bit 3, which is fixedly connected to the drive end, starts to rotate. The operator controls the drilling device 2 to feed downward along the height direction of the frame 1. The drill bit 3 enters the guide hole at the top of the drill sleeve 10 while rotating, and drills downward along the guide axis of the drill sleeve 10. After the drill bit 3 passes through the drill sleeve 10, it drills the inclined hole position that is pre-positioned on the intermediate workpiece. The drill sleeve 10 provides precise radial guidance for the drill bit 3, restricts the radial swing of the drill bit 3 under the action of cutting force, and ensures accurate drilling axis angle and good hole wall surface quality. At the same time, since the lifting seat 8 is fixedly connected to the drill sleeve 10 through the metal insert 11 and the magnetic block 12, the drill sleeve 10 does not shake or shift during operation, avoiding the risk of excessive hole wall roughness and drill bit 3 breakage. The operator controls the drilling depth through the feed handwheel or automatic feed system. When the drill bit 3 reaches the preset hole depth, the drilling device 2 stops feeding and quickly rises to reset, completing the processing of a single inclined hole. In summary, this device, through its internal expansion clamping, external circumferential limiting, and magnetic drill sleeve 10 positioning structures, effectively solves the problems of workpiece movement and drill sleeve 10 wobbling during the machining of inclined holes in turbocharger intermediate bodies, significantly improving the positional accuracy and hole wall quality of inclined hole machining.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining apparatus for intermediate body holes in a turbocharger, comprising a frame (1) and a drilling device (2) adjustable along the height of the frame (1), characterized in that, The drilling device (2) has a drill bit (3) fixedly connected to its drive end. The frame (1) has a working surface (4) fixedly installed at its bottom end. The working surface (4) has a base (5) fixedly installed at its top end. The base (5) has an adjustment seat (6) rotatably set at its top end for placing intermediate workpieces. The bottom end of the adjusting seat (6) is fixedly installed with a driving component. The top end of the adjusting seat (6) is rotatably provided with a bidirectional screw (7) that is connected to the driving component. The top end of the bidirectional screw (7) is threadedly connected with a lifting seat (8) that can move along its height direction. The top end of the lifting seat (8) is provided with a slot (9). A drill sleeve (10) is provided above the adjusting seat (6). The bottom end of the drill sleeve (10) is fixedly installed with a metal plug (11) corresponding to the slot (9). The bottom end of the slot (9) is embedded with a magnetic block (12) for adsorbing the metal plug (11). The bottom end of the bidirectional screw (7) is screwed with a clamping assembly for clamping the inner hole of the intermediate workpiece.

2. The turbocharger intermediate body hole machining apparatus according to claim 1, characterized in that, The bidirectional screw (7) is fitted with a fixed cylinder (13) on its outer side. The top end of the lifting seat (8) can extend from the top end of the fixed cylinder (13). The two ends of the lifting seat (8) are slidably connected to the inner walls of the two ends of the fixed cylinder (13).

3. The turbocharger intermediate body hole machining apparatus according to claim 2, characterized in that, The clamping assembly includes a conical block (14) that is threaded to the bottom end of the bidirectional screw (7). The two ends of the conical block (14) are slidably connected to the inner walls of both sides of the fixed cylinder (13). A pair of through holes are provided at both ends of the fixed cylinder (13). A pair of wedge blocks (15) corresponding to the conical block (14) are slidably arranged in the pair of through holes. A pair of first spring rods (16) for driving the wedge blocks (15) to reset are fixedly installed on the inner wall of the fixed cylinder (13).

4. The apparatus for machining intermediate holes in a turbocharger according to claim 1, characterized in that, The drive assembly includes a worm (17) rotatably mounted at the bottom of the adjusting seat (6), a worm wheel (18) corresponding to the worm (17) fixedly connected to the bottom of the bidirectional screw (7), a transmission rod (19) connected to the worm (17) via a belt drive, an adjusting screw (20) connected to the transmission rod (19), and a rotating handle (21) fixedly mounted at one end of the worm (17).

5. The apparatus for machining intermediate holes in a turbocharger according to claim 4, characterized in that, The top of the adjusting seat (6) is provided with a strip-shaped through groove (22). A movable seat (23) that is threadedly connected to the adjusting screw (20) is slidably provided along the length of the strip-shaped through groove (22). An assembly seat (24) is inserted into the top of the movable seat (23). A movable limiting seat (25) is provided at the front end of the assembly seat (24). The movable limiting seat (25) is floatingly connected to the assembly seat (24) through a second spring rod (26).

6. The apparatus for machining intermediate holes in a turbocharger according to claim 4, characterized in that, The bottom of the adjusting seat (6) is fixedly equipped with a protective shell (27) for protecting the worm (17), worm wheel (18), transmission rod (19) and adjusting screw (20).

7. The apparatus for machining intermediate holes in a turbocharger according to claim 5, characterized in that, The strip-shaped channel (22) is provided with a telescopic protective sleeve (28) to prevent waste debris from entering the protective shell (27).

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