Perforating device for manufacturing engine end cover

Abstract

The invention relates to the technical field of machining, and discloses a punching device for manufacturing an engine end cover, which comprises a workbench, a workpiece moving mechanism, a positioning and pressing mechanism, a punching mechanism and a cooling nozzle, the positioning and pressing mechanism comprises a base plate fixedly connected to the top end of the moving table, a pressing assembly used for pressing end cover raw materials, a transmission assembly used for positioning the end cover raw materials and a limiting top cover, the inner edge of the bottom end of the pressing assembly is in threaded connection with the outer edge of the top end of the base plate, and the inner edge of the bottom end of the pressing assembly is in threaded connection with the outer edge of the top end of the base plate through the transmission assembly; the end cover raw materials of different sizes and shapes are adapted, the universality and practicability of the device are improved, meanwhile, the clamping force of the movable rods which are distributed in the circumferential direction and move synchronously on the end cover raw materials is evenly distributed, damage to the end cover raw materials due to too large local pressure is avoided, and the surface quality of workpieces is protected; machining errors caused by vibration or displacement are effectively prevented, and the positioning precision can be improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and more specifically to a drilling device for manufacturing engine end caps. Background Technology

[0002] The engine end cover is one of the key components of an engine. It has multiple mounting holes, and its machining accuracy affects the engine's assembly quality and performance. Currently, drilling holes in engine end covers is mostly done using ordinary bench drills or CNC machine tools.

[0003] Current technologies have shortcomings: While conventional bench drills are low-cost, they rely on manual labor, and their positioning accuracy is greatly affected by human error, making it difficult to guarantee product consistency. CNC machine tools offer high automation and precision, but their investment and maintenance costs are high, making them uneconomical for small and medium-sized enterprises. Furthermore, both conventional bench drills and CNC machine tools generate a large amount of chips and heat during processing; if not handled promptly, this can affect tool life and the quality of the hole's inner wall. Therefore, there is an urgent need for a specialized drilling device that offers high precision, high efficiency, low cost, and improved processing environment. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a drilling device for manufacturing engine end caps to solve the problems existing in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for manufacturing engine end caps, comprising a worktable, a workpiece moving mechanism, a positioning and clamping mechanism, a drilling mechanism, and a cooling nozzle, wherein the worktable comprises a base and a vertical plate arranged perpendicular to the base; The workpiece moving mechanism includes a drive assembly 1 disposed at the top of the base and a moving stage driven by the drive assembly 1. The positioning and pressing mechanism includes a chassis fixedly connected to the top of the moving platform, a pressing component for pressing the end cap material, a transmission component for positioning the end cap material, and a limiting top cover. The inner edge of the bottom end of the pressing component is threadedly connected to the outer edge of the top end of the chassis. The bottom end of the end cap material is provided with an annular groove and a plurality of positioning grooves along the annular groove. The top end of the limiting top cover is fixedly connected with a positioning ring plate corresponding to the annular groove. The top end of the positioning ring plate is provided with a plurality of positioning blocks corresponding one-to-one with the positioning grooves. The drilling mechanism includes a lifting assembly movably connected to the upright plate, a lifting seat fixedly connected to the top of the lifting assembly, a motor installed inside the lifting seat, and a main shaft driven by the motor. A drill bit is provided at the bottom end of the main shaft. The cooling nozzles are arranged around the drill bit and connected to an external coolant supply system via hoses.

[0006] Furthermore, the limiting top cover is generally shaped like a frustum, with the angle between its conical surface and the bottom surface being 20°. The upper surface of the limiting top cover is fixedly connected to the bottom end of the positioning ring plate. The limiting top cover has multiple sliding grooves radially outward along the outer edge of the positioning ring plate. The limiting top cover has an axially penetrating through groove one, the axis of which coincides with the axis of the limiting top cover, and the diameter of the through groove one is consistent with the inner diameter of the positioning ring plate.

[0007] Furthermore, the transmission assembly includes a hoop plate fixedly connected to the bottom end of the limiting top cover, a driving wheel disposed on one side of the hoop plate, a driven wheel meshing with the edge of the driving wheel, an arc-shaped groove formed on the driven wheel and axially extending therethrough, a movable rod inserted inside the arc-shaped groove and slidable along the arc-shaped groove, a movable groove for limiting the movable rod, and an inner ring plate coaxially disposed with the hoop plate.

[0008] Furthermore, the driving wheel is driven by a motor located at its bottom end, and the driven wheel is rotatably connected to the inside of the hoop plate through an inner ring plate. The inner diameter of the inner ring plate is the same as the inner diameter of the through groove, and the outer circumferential surface of the inner ring plate is movably connected to the inner circumferential surface of the driven wheel.

[0009] Furthermore, the arc-shaped grooves are distributed in a ring on the surface of the driven wheel, the movable grooves are fixedly connected to the bottom end of the hoop plate and the number of movable rods is the same, the bottom end of the movable rod is slidably connected to the inside of the movable groove, and its top end passes through the arc-shaped groove and the sliding groove, and its height is lower than the height of the positioning ring plate.

[0010] Furthermore, the clamping assembly includes a pressure plate fixedly connected to the bottom end of the hoop plate, an installation slot opened on the top of the pressure plate that is adapted to and corresponds one-to-one with the movable slot, a second motor fixedly connected to the outer periphery of the pressure plate, a first gear driven by the second motor to rotate, a second gear meshing with the first gear, a pressure rod fixedly connected to the side of the second gear, a fixing plate fixedly connected to the side of the pressure plate for fixing the first motor, and a second through slot opened on the pressure plate and axially penetrating.

[0011] Furthermore, the number of pressure rods is at least three, and they are evenly distributed along the circumference of the pressure plate. The second through groove is coaxially arranged with the pressure plate, and the inner diameter of the second through groove is consistent with that of the inner ring plate, the first through groove, and the positioning ring plate. The connection is sealed.

[0012] Furthermore, the chassis includes a threaded ring plate fixed to its top and bolts circumferentially distributed along its outer side. The chassis is fixedly connected to the top of the moving platform by the bolts, and the chassis is threadedly connected to the pressure plate by the threaded ring plate.

[0013] Furthermore, a flow guide groove is provided laterally in the middle of the mobile platform, and the bottom surface of the flow guide groove slopes downward from the middle to both sides.

[0014] Furthermore, a tool changer is provided on one side of the drilling mechanism to enable rapid tool switching between the tool magazine and the spindle.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention, by incorporating a transmission component and controlling and adjusting the movable rod, adapts to end cap materials of different sizes and shapes, improving the versatility and practicality of the device. At the same time, the circumferentially distributed and synchronously moving movable rod provides a uniform clamping force on the end cap material, avoiding damage to the end cap material caused by excessive local pressure, protecting the surface quality of the workpiece, effectively preventing processing errors caused by vibration or displacement, and improving positioning accuracy.

[0016] 2. The present invention has a transmission component, which ensures the consistency of the clamping position of the end cap material by means of the positioning ring plate and positioning block on the top, which is beneficial to the positioning accuracy of the end cap material and improves production efficiency.

[0017] 3. The present invention, by providing a pressing component, enables the rapid pressing and releasing of the end cap material, which is beneficial to improving production efficiency.

[0018] 4. The present invention has a wastewater flow channel inside the positioning and pressing mechanism, which helps to maintain a clean working environment, reduce subsequent cleaning work, and extend the service life of the positioning and pressing mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the positioning and pressing mechanism of the present invention in the pressing state; Figure 3 This is a schematic diagram of the internal structure of the end cap material of the present invention; Figure 4 This is a schematic diagram of the positioning and clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the limiting top cover of the present invention; Figure 6 This is a schematic diagram of the transmission component of the present invention; Figure 7 This is a bottom view of the transmission assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the mobile station of the present invention.

[0020] The attached figures are labeled as follows: 1. Worktable; 2. Workpiece moving mechanism; 21. Moving table; 211. Guide channel; 3. Positioning and clamping mechanism; 31. Limiting top cover; 311. Positioning ring plate; 312. Positioning block; 313. Sliding groove; 314. Through groove one; 32. Transmission assembly; 321. Hoop plate; 322. Driving wheel; 3221. Motor one; 323. Driven wheel; 324. Arc groove; 325. Movable rod; 326. Movable groove; 327. 33. Inner ring plate; 33. Pressing assembly; 331. Pressure plate; 332. Mounting groove; 333. Motor II; 334. Gear I; 335. Gear II; 336. Pressure rod; 337. Fixing plate; 338. Through groove II; 34. Chassis; 341. Threaded ring plate; 342. Bolt; 4. Drilling mechanism; 41. Lifting assembly; 42. Lifting seat; 5. Cooling nozzle; 6. Tool changing disc; 7. End cover material; 71. Annular groove; 72. Positioning groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The drilling device for manufacturing engine end caps involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1 The present invention provides a drilling device for manufacturing engine end caps, including a worktable 1, a workpiece moving mechanism 2, a positioning and clamping mechanism 3, a drilling mechanism 4, and a cooling nozzle 5. The worktable 1 includes a base and a vertical plate arranged perpendicular to the base to provide stable support for each mechanism.

[0023] The workpiece moving mechanism 2 includes a drive assembly 1 located at the top of the base and a moving table 21 driven by the drive assembly 1. The drive assembly 1 includes a drive motor, a lead screw, and a guide rod arranged parallel to the lead screw. The drive motor drives the lead screw to rotate, which in turn drives the moving table 21 to move horizontally along the guide rod, thus meeting the workpiece moving requirements during the processing.

[0024] The drilling mechanism 4 includes a lifting assembly 41 movably connected to the upright plate, a lifting seat 42 fixedly connected to the top of the lifting assembly 41, a motor installed inside the lifting seat 42, and a spindle driven by the motor. A drill bit is provided at the bottom end of the spindle. The drill bit is mounted at the bottom end of the spindle via a drill chuck.

[0025] Cooling nozzles 5 are arranged around the drill bit and connected to an external coolant supply system via hoses to provide cooling water while the drill bit is working, cooling it and rinsing away debris.

[0026] Reference Figure 1 As shown in Figure 5, the positioning and pressing mechanism 3 includes a chassis 34 fixedly connected to the top of the moving platform 21, a pressing component 33 for pressing the end cap material 7, a transmission component 32 for positioning the end cap material 7, and a limiting top cover 31. The inner edge of the bottom end of the pressing component 33 is threadedly connected to the outer edge of the top end of the chassis 34. The bottom end of the end cap material 7 is provided with an annular groove 71 and a plurality of positioning grooves 72 arranged along the annular groove 71. The top end of the limiting top cover 31 is fixedly connected with a positioning ring plate 311 corresponding to the annular groove 71. The top end of the positioning ring plate 311 is provided with a plurality of positioning blocks 312 corresponding one-to-one with the positioning grooves 72.

[0027] The end cap material 7 is positioned by aligning its bottom annular groove 71 and positioning groove 72 with the positioning ring plate 311 and positioning block 312 at the top of the limiting top cover 31. The transmission assembly 32 further fixes the positioned end cap material 7, and the pressing assembly 33 presses it from above.

[0028] Reference Figure 5 The limiting top cover 31 is in the shape of a frustum, with the angle between its conical surface and the bottom surface being 20°. The upper surface of the limiting top cover 31 is fixedly connected to the bottom end of the positioning ring plate 311. The limiting top cover 31 has multiple sliding grooves 313 radially outward along the outer edge of the positioning ring plate 311. The limiting top cover 31 has an axially penetrating through groove 314, the axis of which coincides with the axis of the limiting top cover 31, and the diameter of the through groove 314 is the same as the inner diameter of the positioning ring plate 311.

[0029] During the drilling operation of the end cap material 7, cooling water is continuously poured to wash away the waste chips. Part of the waste water carrying the waste chips is flushed out from the top of the end cap material 7 and slides down the conical surface of the limiting top cover 31; another part of the waste water leaks down from the gap between the drill bit and the punched hole, flowing downwards along the inner wall of the positioning ring plate 311 and the through groove 314. In this process, when the punched hole is located outside the positioning ring plate 311, the waste water flows down along the conical surface of the limiting top cover 31; while when the punched hole is within the positioning ring plate 311, the waste water flows down along the inner wall of the positioning ring plate 311. The positioning ring plate 311 not only serves a positioning and supporting function but also plays a guiding role during the chip removal process.

[0030] Reference Figure 6 and Figure 7 The transmission assembly 32 includes a hoop plate 321 fixedly connected to the bottom end of the limiting top cover 31, a driving wheel 322 disposed on one side of the hoop plate 321, a driven wheel 323 meshing with the edge of the driving wheel 322, an arc-shaped groove 324 opened on the driven wheel 323 and axially extending through it, a movable rod 325 inserted inside the arc-shaped groove 324 and slidable along the arc-shaped groove 324, a movable groove 326 for limiting the movable rod 325, and an inner ring plate 327 coaxially disposed with the hoop plate 321.

[0031] The driving wheel 322 is driven by a motor 3221 located at its bottom end, and the driven wheel 323 is rotatably connected to the inside of the hoop 321 via an inner ring plate 327. The inner diameter of the inner ring plate 327 is the same as the inner diameter of the through groove 314, and the outer circumferential surface of the inner ring plate 327 is movably connected to the inner circumferential surface of the driven wheel 323.

[0032] The driving wheel 322 is fixedly connected to the motor output shaft. When the motor starts, the driving wheel 322 rotates, which in turn drives the driven wheel 323, which meshes with it, to rotate. The arc-shaped groove 324 on the driven wheel 323 allows the movable rod 325 to slide along an arc-shaped trajectory inside it. When the driven wheel 323 rotates, the movable rod 325 moves linearly along the movable groove 326 under the push of the arc-shaped groove 324. The sliding groove 313 and the movable groove 326 correspond one-to-one. The upper end of the movable rod 325 moves linearly in the sliding groove 313. The sliding groove 313 further ensures the stability of the movable rod 325 during the sliding process, preventing it from deviating or shaking. In addition, wastewater flows downward along the inner wall of the positioning ring plate 311 and the through groove 314, and will flow through the inner wall section of the inner ring plate 327.

[0033] Among them, the arc-shaped groove 324 is distributed in a ring on the surface of the driven wheel 323, the movable groove 326 is fixedly connected to the bottom end of the hoop plate 321 and has the same number as the movable rod 325, the bottom end of the movable rod 325 is slidably connected to the inside of the movable groove 326, and its top end passes through the arc-shaped groove 324 and the sliding groove 313, and its height is lower than the height of the positioning ring plate 311.

[0034] Reference Figure 8 The clamping assembly 33 includes a pressure plate 331 fixedly connected to the bottom end of the clamping plate 321, a mounting groove 332 formed on the top of the pressure plate 331 and adapted to and corresponding to the movable groove 326, a second motor 333 fixedly connected to the outer periphery of the pressure plate 331, a first gear 334 driven by the second motor 333 to rotate, a second gear 335 meshing with the first gear 334, a pressure rod 336 fixedly connected to the side of the second gear 335, and a fixing rod 336 fixedly connected to the side of the pressure plate 331 for fixing the first motor 3221. Plate 337 and through groove 338 axially extending on pressure plate 331, wherein there are at least three pressure rods 336 evenly distributed around the circumference of pressure plate 331, through groove 338 is coaxially arranged with pressure plate 331, and the inner diameter of through groove 338 is the same as that of inner ring plate 327, through groove 314 and positioning ring plate 311, and the connection is sealed. Through groove 338 together with inner ring plate 327, through groove 314 and positioning ring plate 311 constitutes the flow channel of wastewater inside the positioning and pressing mechanism.

[0035] The pressing action of the pressure rod 336 is achieved by the motor 333 driving the gear 334 to rotate, which in turn drives the gear 335 to rotate. The wastewater flows down along the inner wall of the positioning ring plate 311 and the through groove 314. After flowing through the inner wall section of the inner ring plate 327, it continues to flow down along the inner wall of the through groove 338.

[0036] The chassis 34 includes a threaded ring plate 341 fixed to its top and bolts 342 distributed circumferentially along its outer side. The chassis 34 is fixedly connected to the top of the moving platform 21 by the bolts 342, and the chassis 34 is threadedly connected to the pressure plate 331 by the threaded ring plate 341.

[0037] Reference Figure 9 The middle of the moving platform 21 is provided with a guide channel 211. The bottom surface of the guide channel 211 slopes downward from the middle to both sides. The wastewater flowing down along the positioning ring plate 311, through channel one 314, inner ring plate 327 and through channel two 338 will eventually slide down to the guide channel 211 and be diverted to both sides along its slope, which facilitates the collection and discharge of wastewater.

[0038] The punching mechanism 4 has a tool changer 6 on one side, which is used to enable rapid tool switching between the tool magazine and the spindle.

[0039] Working principle of the invention: The working principle of the positioning and clamping mechanism 3 for fixing the end cap material 7: During processing, the annular groove 71 and positioning groove 72 of the end cap material 7 are aligned with the positioning ring plate 311 and positioning block 312. The motor 3221 drives the drive wheel 322 to rotate, which in turn drives the driven wheel 323 to rotate. This causes the movable rod 325 to move centrifugally or centrifugally along the movable groove 326 under the drive of the rotating arc groove 324. The centrifugal or centrifugal movements of multiple sets of movable rods 325 are synchronized. At this time, it can be divided into two groups: The movable rod 325 fixes the end cap material 7 from the outside: In the initial state, the movable rod 325 is located at the edge of the limiting top cover 31. After the end cap material 7 is placed, the motor 3221 starts and drives the drive wheel 322 to rotate, which drives multiple sets of movable rods 325 to move centripetally along the sliding groove 313 until the end cap material 7 is clamped from the outside. The movable rod 325 fixes the end cap material 7 from the inside: In the initial state, the movable rod 325 is located at the outer edge of the positioning ring plate 311. After the end cap material 7 is placed, the motor 3221 starts and drives the drive wheel 322 to rotate, which drives multiple sets of movable rods 325 to make centrifugal motion along the sliding groove 313, and holds the inner wall of the end cap material 7 from the inside to fix it.

[0040] Both of the above application methods can fix the end cap material 7. By adjusting the movable rod 325, it can adapt to end cap materials 7 of different sizes and shapes. In addition, the clamping force of the circumferentially distributed and synchronously moving movable rod 325 is evenly distributed, avoiding damage to the end cap material 7 caused by excessive local pressure and protecting the surface quality of the workpiece.

[0041] It should be noted that in the description of this invention, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this invention refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling apparatus for manufacturing engine end caps, comprising a worktable (1), characterized in that, It also includes: a workpiece moving mechanism (2), a positioning and clamping mechanism (3), a drilling mechanism (4) and a cooling nozzle (5), wherein the worktable (1) includes a base and a vertical plate arranged perpendicular to the base; The workpiece moving mechanism (2) includes a drive assembly 1 disposed at the top of the base and a moving stage (21) driven by the drive assembly 1. The positioning and pressing mechanism (3) includes a chassis (34) fixedly connected to the top of the moving platform (21), a pressing component (33) for pressing the end cap material (7), a transmission component (32) for positioning the end cap material (7), and a limiting top cover (31). The inner edge of the bottom end of the pressing component (33) is threadedly connected to the outer edge of the top end of the chassis (34). The bottom end of the end cap material (7) is provided with an annular groove (71) and a plurality of positioning grooves (72) arranged along the annular groove (71). The top end of the limiting top cover (31) is fixedly connected with a positioning ring plate (311) corresponding to the annular groove (71). The top end of the positioning ring plate (311) is provided with a plurality of positioning blocks (312) corresponding one-to-one with the positioning grooves (72). The drilling mechanism (4) includes a lifting assembly (41) movably connected to the upright plate, a lifting seat (42) fixedly connected to the top of the lifting assembly (41), a motor installed inside the lifting seat (42), and a main shaft driven by the motor. A drill bit is provided at the bottom end of the main shaft. The cooling nozzle (5) is arranged around the drill bit and connected to an external coolant supply system via a hose.

2. The drilling device for manufacturing engine end covers according to claim 1, characterized in that: The limiting top cover (31) is in the shape of a frustum, and the angle between its conical surface and the bottom surface is 20°. The upper surface of the limiting top cover (31) is fixedly connected to the bottom end of the positioning ring plate (311). The limiting top cover (31) has multiple sliding grooves (313) radially outward along the outer edge of the positioning ring plate (311). The limiting top cover (31) has an axial through groove (314). The axis of the through groove (314) coincides with the axis of the limiting top cover (31), and the diameter of the through groove (314) is consistent with the inner diameter of the positioning ring plate (311).

3. A drilling device for manufacturing engine end caps according to claim 2, characterized in that: The transmission assembly (32) includes a hoop plate (321) fixedly connected to the bottom end of the limiting top cover (31), a driving wheel (322) disposed on one side of the hoop plate (321), a driven wheel (323) meshing with the edge of the driving wheel (322), an arc-shaped groove (324) opened on the driven wheel (323) and axially extending through it, a movable rod (325) inserted inside the arc-shaped groove (324) and slidable along the arc-shaped groove (324), a movable groove (326) for limiting the movable rod (325), and an inner ring plate (327) coaxially disposed with the hoop plate (321).

4. A drilling device for manufacturing engine end caps according to claim 3, characterized in that: The driving wheel (322) is driven by a motor (3221) located at its bottom end. The driven wheel (323) is rotatably connected to the inside of the hoop plate (321) through an inner ring plate (327). The inner diameter of the inner ring plate (327) is the same as the inner diameter of the through groove (314), and the outer circumferential surface is movably connected to the inner circumferential surface of the driven wheel (323).

5. A drilling device for manufacturing engine end caps according to claim 3, characterized in that: The arc-shaped groove (324) is distributed in a ring on the surface of the driven wheel (323). The movable groove (326) is fixedly connected to the bottom end of the hoop plate (321) and has the same number as the movable rod (325). The bottom end of the movable rod (325) is slidably connected to the inside of the movable groove (326), and its top end passes through the arc-shaped groove (324) and the sliding groove (313), with a height lower than the height of the positioning ring plate (311).

6. A drilling device for manufacturing engine end covers according to claim 1, characterized in that: The clamping assembly (33) includes a pressure plate (331) fixedly connected to the bottom end of the clamping plate (321), an installation groove (332) opened on the top of the pressure plate (331) and adapted to and corresponding to the movable groove (326), a second motor (333) fixedly connected to the outer periphery of the pressure plate (331), a first gear (334) driven by the second motor (333) to rotate, a second gear (335) meshing with the first gear (334), a pressure rod (336) fixedly connected to the side of the second gear (335), a fixing plate (337) fixedly connected to the side of the pressure plate (331) for fixing the first motor (3221), and a second through groove (338) opened on the pressure plate (331) and axially penetrating.

7. A drilling device for manufacturing engine end covers according to claim 6, characterized in that: The number of pressure rods (336) is at least three and they are evenly distributed around the pressure plate (331). The second through groove (338) is coaxially arranged with the pressure plate (331), and the inner diameter of the second through groove (338) is the same as that of the inner ring plate (327), the first through groove (314) and the positioning ring plate (311), and the connection is sealed.

8. A drilling device for manufacturing engine end caps according to claim 1, characterized in that: The chassis (34) includes a threaded ring plate (341) fixed at its top and bolts (342) distributed circumferentially along its outer side. The chassis (34) is fixedly connected to the top of the moving platform (21) by the bolts (342), and the chassis (34) is threadedly connected to the pressure plate (331) by the threaded ring plate (341).

9. A drilling device for manufacturing engine end covers according to claim 8, characterized in that: The mobile platform (21) has a horizontally opened guide groove (211) in the middle, and the bottom surface of the guide groove (211) is inclined downward from the middle to both sides.

10. A drilling device for manufacturing engine end caps according to claim 2, characterized in that: The punching mechanism (4) is provided with a tool changer (6) on one side, which is used to realize the rapid tool switching between the tool magazine and the spindle.

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