Engine cylinder block high-speed milling device with angle self-adapting adjustment

Abstract

The application belongs to the technical field of engine production, in particular to an angle self-adaptive adjusting engine cylinder high-speed milling device, which comprises a support plate, a speed reducer motor is installed on one side of the support plate, a clamp is rotationally connected above the support plate, one side of the clamp is fixedly connected with the output shaft of the speed reducer motor, a support frame is fixed on one side of the top end of the support plate, a sliding cavity is formed in the support frame, a sliding plate is slidably connected in the sliding cavity, a guide shell is arranged below the sliding plate, a transposition assembly is arranged in the guide shell, an electric telescopic rod is arranged below the guide shell, a milling motor is fixed on the output shaft end of the electric telescopic rod, and a tool bit is fixed on the rotating shaft end of the milling motor; the clamp rotates the gear tooth rod transmission, cooperates with the double-V-shaped frame guide structure, can automatically match the position and height deviation of different cylinder cylinders, and does not need manual adjustment of the equipment station and the tool bit height.

Description

Technical Field

[0001] This invention belongs to the field of engine manufacturing technology, specifically an angle-adaptive high-speed milling device for engine cylinder blocks. Background Technology

[0002] The engine block is a core component of automobiles, and its machining accuracy directly affects the engine assembly quality and operational reliability. High-speed milling, due to its high efficiency and high precision, has become the mainstream method for machining the cylinder block plane, contour, and hole system, and is widely used in the automotive manufacturing field. Currently, the industry mostly uses CNC machining centers for high-speed milling of cylinder blocks, equipped with carbide or superhard tools, to achieve efficient cutting through high speed and fast feed.

[0003] In existing technologies, engine block milling typically involves using a dedicated fixture to clamp and fix the workpiece in a single operation. A CNC system controls the spindle to rotate the milling cutter, completing the milling of the top, bottom, and side surfaces according to a preset path. The machining process requires initial datum positioning, followed by rough milling and finish milling operations to gradually remove excess material. Rough milling removes most of the excess material, while finish milling ensures dimensional accuracy and surface roughness. The equipment is mostly a single-station structure, with workpiece loading / unloading and machining occurring alternately. The cutting tool is fixed in place, and cutting parameters are adjusted by controlling the spindle speed and feed rate.

[0004] Existing high-speed milling equipment for engine cylinder blocks has a fixed structure and is only suitable for machining cylinder blocks with a single arrangement. When machining engine cylinder blocks with different V-shapes, the equipment needs to be manually adjusted, which takes a long time and has low processing efficiency. Furthermore, errors may occur during the adjustment process, affecting the milling accuracy. Alternatively, the corresponding equipment may need to be replaced, which increases the cost of purchasing the equipment.

[0005] Therefore, the present invention provides a high-speed milling device for engine cylinder blocks with adaptive angle adjustment. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: An angle-adaptive high-speed milling device for engine cylinder blocks, comprising a support plate, a reduction motor mounted on one side of the support plate, a clamp rotatably connected above the support plate, one side of the clamp being fixedly connected to the output shaft of the reduction motor, a support frame fixed to one side of the top of the support plate, a sliding cavity formed inside the support frame, a sliding plate slidably connected inside the sliding cavity, a transmission gear fixed to the other side of the clamp, a gear tooth meshing with the bottom end of the transmission gear, the gear tooth slidably connected to the support plate, a connecting frame fixed to one side of the gear tooth, one side of the connecting frame being fixedly connected to the sliding plate, a guide shell provided below the sliding plate, a shifting component provided inside the guide shell, an electric telescopic rod provided below the guide shell, a milling motor fixed to the output shaft end of the electric telescopic rod, and a cutting head fixed to the rotating shaft end of the milling motor.

[0008] Preferably, the repositioning component includes a sliding block fixed to the top of the electric telescopic rod, the sliding block being slidably connected inside the guide housing, a bidirectional lead screw being rotatably connected inside the guide housing, the bidirectional lead screw being threadedly connected to the sliding block, and a drive component being provided at one end of the bidirectional lead screw.

[0009] Preferably, the drive assembly includes a lifting frame slidably connected inside the guide housing, the end of the bidirectional lead screw is connected to a toothed sleeve via a ratchet structure, a toothed plate is fixed on one side of the lifting frame, the toothed plate is engaged with the toothed sleeve, and a top plate is fixed to the end of the output shaft of the electric telescopic rod.

[0010] Preferably, a first V-shaped frame is fixed to the top of the support frame, a connecting rod is fixed to the top of the guide shell, the connecting rod passes through the interior of the sliding plate, and a guide assembly is provided above the connecting rod.

[0011] Preferably, the guide assembly includes a first slider fixed to the top of the connecting rod, the top of the first slider being close to the top of the inside of the first V-frame, a first spring being sleeved on the outside of the connecting rod, the top of the first spring being fixedly connected to the first slider, and the bottom of the first spring being fixedly connected to the sliding plate.

[0012] Preferably, a second spring is fixed to the top of the lifting frame, a second slider is fixed to the top of the second spring, a second V-shaped frame is fixed to one side of the support frame, and the top of the second slider is in contact with the inner wall of the second V-shaped frame.

[0013] Preferably, two connecting plates are fixed on one side of the second slider, and a second guide rod passes through the bottom end of the connecting plate. The bottom end of the second guide rod is fixedly connected to the guide shell. A third spring is sleeved on the outside of the second guide rod. The top end of the third spring is fixedly connected to the connecting plate, and the bottom end of the third spring is fixedly connected to the toothed rod.

[0014] Preferably, the height of the second V-frame is greater than the height of the first V-frame, and the length of the inner inclined surface of the second V-frame is greater than the length of the inner inclined surface of the first V-frame.

[0015] Preferably, a first guide rod is fixed between the connecting plate and the second slider, and the first guide rod passes through the interior of one side of the lifting frame and the interior of the second spring.

[0016] Preferably, the top of the connecting frame is provided with a telescopic hole, and one side of the lifting frame can pass through the interior of the telescopic hole.

[0017] The beneficial effects of this invention are as follows: 1. The engine cylinder block high-speed milling device with adaptive angle adjustment described in this invention, through the linkage gear and rack transmission of the fixture rotation, and in conjunction with the double V-shaped frame guide structure, can automatically match the position and height deviation of different cylinder blocks, without the need for manual adjustment of the equipment position and the height of the cutter head.

[0018] 2. The engine cylinder block high-speed milling device with adaptive angle adjustment described in this invention, through the linkage structure of lifting top plate, ratchet and ratchet teeth, and bidirectional lead screw, can automatically complete the switching to the next processing station after the completion of a single cylinder milling and the reset of the cutter head, realizing fully automated continuous milling operation without the need for manual positioning and station changing. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the support frame structure in this invention; Figure 3 This is a schematic diagram of the guide shell structure in this invention; Figure 4 This is a schematic diagram of the first V-shaped frame structure in this invention; Figure 5 This is a schematic diagram of the second V-shaped frame structure in this invention; Figure 6 This is a schematic diagram of the lifting frame structure in this invention; Figure 7 This is a schematic diagram of the internal structure of the guide shell in this invention.

[0021] In the diagram: 1. Support plate; 11. Gear motor; 111. Fixture; 112. Transmission gear; 113. Tooth rack; 114. Connecting frame; 115. Telescopic hole; 12. Support frame; 121. Sliding cavity; 122. Sliding plate; 123. First V-frame; 124. First slider; 125. Connecting rod; 126. First spring; 13. Guide shell; 131. Two-way lead screw; 132. Sliding block; 133. Tooth sleeve; 14. Lifting frame; 141. Second V-frame; 142. Tooth plate; 143. Second slider; 144. Connecting plate; 145. Second spring; 146. First guide rod; 147. Second guide rod; 148. Third spring; 2. Milling motor; 21. Cutting head; 22. Electric telescopic rod; 221. Top plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 3 As shown in the embodiment of the present invention, a high-speed milling device for engine cylinder block with adaptive angle adjustment includes a support plate 1. A reduction motor 11 is mounted on one side of the support plate 1. A clamp 111 is rotatably connected above the support plate 1. One side of the clamp 111 is fixedly connected to the output shaft of the reduction motor 11. A support frame 12 is fixed to one side of the top of the support plate 1. A sliding cavity 121 is formed inside the support frame 12. A sliding plate 122 is slidably connected inside the sliding cavity 121. A transmission gear is fixed to the other side of the clamp 111. 112, the bottom end of the transmission gear 112 is meshed with a rack 113, the rack 113 is slidably connected to the support plate 1, a connecting frame 114 is fixed on one side of the rack 113, one side of the connecting frame 114 is fixedly connected to the sliding plate 122, a guide shell 13 is provided below the sliding plate 122, a shifting component is provided inside the guide shell 13, an electric telescopic rod 22 is provided below the guide shell 13, a milling motor 2 is fixed to the output shaft end of the electric telescopic rod 22, and a cutter head 21 is fixed to the rotating shaft end of the milling motor 2.

[0024] When machining the engine block, the engine block is first installed on the top of the fixture 111. The engine block is then fixed by the fixing claws on the surface of the fixture 111. After fixing, the milling motor 2 is started to drive the cutter head 21 to rotate. During the rotation, the electric telescopic rod 22 is started to push the milling motor 2 downward at a constant speed. The milling motor 2 simultaneously drives the cutter head 21 to move downward. During the movement, the cutter head 21 rotates and mills the inside of the cylinder through the external cutting edge. At the same time, water is flushed into the cylinder through an external cooling device. The water flow can cool the cutter head 21. The cylinder wall is cooled, and the metal chips generated during milling are flushed out from the inside of the cylinder. When the electric telescopic rod 22 extends to its maximum length, it can push the cutter head 21 to completely mill the inside of the current cylinder. Then, the electric telescopic rod 22 quickly drives the milling motor 2 and the cutter head 21 to move away from the inside of the cylinder. After the cutter head 21 is reset, it is moved to the next station through the switching component. After the switching, the above operation is repeated to mill the next cylinder. This process is repeated to mill four cylinders, thereby achieving milling of the cylinder wall of the engine block. Engine blocks come in different types depending on the distribution of cylinders. Common types include inline four-cylinder engines and V6 engines. The above describes the machining process for an inline four-cylinder engine. When machining a V6 engine block is required, the reduction motor 11 is started to rotate the fixture 111. The fixture 111 rotates the V6 engine block. When one cylinder on one side of the V6 engine block is perpendicular to the support plate 1, the reduction motor 11 stops rotating the fixture 111. Simultaneously, the shaft on one side of the fixture 111 rotates the transmission gear 112. The transmission gear 112 moves the rack 113, which in turn moves the connecting frame 114, causing the sliding plate 122 to move within the sliding cavity 1. The internal sliding of 21 causes the sliding plate 122 to drive the guide shell 13 below, which in turn drives the electric telescopic rod 22, the milling motor 2, and the cutter head 21 to move synchronously. The direction and angle of rotation of the transmission gear 112 are matched with the distance of movement of the sliding plate 122. When the V-type six-cylinder cylinder body rotates the cylinder to the top, there will be a certain deviation from the position of the inline four-cylinder cylinder. Through the corresponding drive of the transmission gear 112, the cutter head 21 is moved to the position of the deviation. When the fixture 111 drives the transmission gear 112 to rotate in the opposite direction, the sliding plate 122 will also move in the opposite direction, so that the cutter head 21 moves in the opposite direction to align with the cylinder on the other side, thereby facilitating the milling of the cylinder of the V-type six-cylinder cylinder body by the cutter head 21.

[0025] like Figures 1 to 7 As shown, the repositioning assembly includes a sliding block 132 fixed to the top of the electric telescopic rod 22. The sliding block 132 is slidably connected inside the guide shell 13. A bidirectional lead screw 131 is rotatably connected inside the guide shell 13. The bidirectional lead screw 131 is threadedly connected to the sliding block 132. A drive assembly is provided at one end of the bidirectional lead screw 131.

[0026] When the cutter head 21 completes milling inside the cylinder, the electric telescopic rod 22 drives the milling motor 2 and the cutter head 21 to rise and reset. When the electric telescopic rod 22 drives the milling motor 2 to rise to the highest position, it triggers the drive assembly. The drive assembly drives the bidirectional lead screw 131 to rotate. When the bidirectional lead screw 131 rotates, it drives the sliding block 132 to slide inside the guide shell 13. At this time, the sliding block 132 drives the electric telescopic rod 22, the milling motor 2 and the cutter head 21 to move to the top of the next cylinder, thereby realizing the automatic switching of the position of the cutter head 21.

[0027] like Figures 1 to 7 As shown, the drive assembly includes a lifting frame 14 slidably connected inside the guide housing 13, a toothed sleeve 133 connected to the end of the bidirectional lead screw 131 via a ratchet structure, a toothed plate 142 fixed on one side of the lifting frame 14, the toothed plate 142 meshing with the toothed sleeve 133, and a top plate 221 fixed to the end of the output shaft of the electric telescopic rod 22.

[0028] In use, the electric telescopic rod 22 drives the milling motor 2 to rise and fall. When the electric telescopic rod 22 drives the milling motor 2 to rise, it simultaneously drives the top plate 221 to rise. At this time, the lifting frame 14 is in a downward-extending state. When the top plate 221 rises, it will push the lifting frame 14 upward. At this time, the lifting frame 14 drives the toothed plate 142 to rotate the toothed sleeve 133. At this time, the ratchet and tooth structure between the toothed sleeve 133 and the double-acting screw 131 engages, thereby causing the toothed sleeve 133 to drive the double-acting screw 131 to rotate and move the sliding block 132. When the lifting frame 14 is raised to the highest position, the cutter head 21 can be moved above the next cylinder.

[0029] like Figures 1 to 4 As shown, a first V-shaped frame 123 is fixed to the top of the support frame 12, and a connecting rod 125 is fixed to the top of the guide shell 13. The connecting rod 125 passes through the interior of the sliding plate 122, and a guide assembly is provided above the connecting rod 125.

[0030] During use, the sliding plate 122 moves with the connecting frame 114. As the top height of the V-type six-cylinder body changes after rotation, the cutter head 21 cannot be fully inserted into the cylinder, thus affecting the milling of the cylinder inner wall by the cutter head 21. Therefore, during the movement of the sliding plate 122, the connecting rod 125 is driven downward by the guide assembly to push the guide shell 13. At this time, the guide shell 13 will drive the milling motor 2, the cutter head 21 and the electric telescopic rod 22 to move downward synchronously, thereby automatically adapting the height of the cutter head 21 to the height of the V-type six-cylinder body.

[0031] like Figures 1 to 4As shown, the guide assembly includes a first slider 124 fixed to the top of the connecting rod 125. The top of the first slider 124 is close to the top of the inside of the first V-shaped frame 123. A first spring 126 is sleeved on the outside of the connecting rod 125. The top of the first spring 126 is fixedly connected to the first slider 124, and the bottom of the first spring 126 is fixedly connected to the sliding plate 122.

[0032] During the movement of the sliding plate 122, the connecting rod 125 drives the first slider 124 to move. At the same time, the first slider 124 slides on the inner wall of the first V-frame 123. The interior of the first V-frame 123 is high in the middle and low on both sides. When the first slider 124 slides to both sides, the inner wall of the first V-frame 123 guides the first slider 124, causing the first slider 124 to push the connecting rod 125 downward. The connecting rod 125 drives the guide shell 13 to move downward, which can automatically adjust the height of the cutter head 21. At the same time, the first slider 124 will squeeze the first spring 126. When the first slider 124 slides back to the middle of the first V-frame 123, the elastic force of the first spring 126 will push the first slider 124 to rise automatically, thereby automatically adjusting the height of the cutter head 21. During use, the first spring 126 supports the guide shell 13 and multiple components below it.

[0033] like Figures 1 to 6 As shown, a second spring 145 is fixed to the top of the lifting frame 14, a second slider 143 is fixed to the top of the second spring 145, a second V-shaped frame 141 is fixed to one side of the support frame 12, and the top of the second slider 143 is in contact with the inner wall of the second V-shaped frame 141.

[0034] During use, the top plate 221 pushes the lifting frame 14 upward. When the electric telescopic rod 22 pushes the top plate 221 downward, the lifting frame 14 loses its thrust. At this time, the second spring 145 pushes the lifting frame 14 downward, which can reset the lifting frame 14 downward. At the same time, the toothed plate 142 will drive the toothed sleeve 133 to rotate in the opposite direction. However, at this time, the ratchet structure between the toothed sleeve 133 and the double-acting screw 131 is separated, so that the toothed sleeve 133 does not drive the double-acting screw 131 to rotate, thereby realizing the automatic reset of the lifting frame 14.

[0035] like Figures 1 to 6 As shown, two connecting plates 144 are fixed on one side of the second slider 143. A second guide rod 147 passes through the bottom end of the connecting plate 144. The bottom end of the second guide rod 147 is fixedly connected to the guide shell 13. A third spring 148 is sleeved on the outside of the second guide rod 147. The top end of the third spring 148 is fixedly connected to the connecting plate 144, and the bottom end of the third spring 148 is fixedly connected to the toothed rod 113.

[0036] When the sliding plate 122 moves the guide shell 13, the guide shell 13 will move the second slider 143 synchronously through the lifting frame 14. At this time, the second slider 143 slides inside the second V-frame 141. During the sliding process, the second slider 143 moves downward under the guidance of the second V-frame 141. At this time, the lifting frame 14 can extend downward as a whole, thereby matching the downward movement distance of the guide shell 13. When the second slider 143 slides to both sides, the second slider 143 drives the connecting plate 144 to press the third spring 148 downward. When the second slider 143 slides to the middle of the second V-frame 141, the elastic force of the third spring 148 pushes the connecting plate 144 to raise the second slider 143 to reset, thereby realizing the automatic adjustment of the height of the lifting frame 14.

[0037] like Figures 1 to 6 As shown, the height of the second V-frame 141 is greater than the height of the first V-frame 123, and the length of the inner inclined surface of the second V-frame 141 is greater than the length of the inner inclined surface of the first V-frame 123.

[0038] As the guide shell 13 moves downward, it moves synchronously to one side. At this time, the second slider 143 slides inside the second V-frame 141. Guided by the inner wall of the second V-frame 141, the second slider 143 drives the lifting frame 14 to move downward as a whole. However, there are three cylinders on one side of the V-type six-cylinder block, and the distance that the slider 132 moves each time is different from the distance that the inline four-cylinder block moves each time. At this time, due to the higher height of the second V-frame 141, the second slider 143 can push the lifting frame 14 to move downward a longer distance when it moves to one side. When the lifting frame 14 extends downward a longer distance, the top plate 221 contacts the lifting frame 14 earlier, pushing the lifting frame 14 to rise a longer distance. This allows the lifting frame 14 to drive the gear sleeve 133 to rotate at a larger angle through the gear plate 142, and the gear sleeve 133 to drive the slider 132 to move a longer distance through the double-acting screw 131, thus adapting to the cylinder position of the V-type six-cylinder block.

[0039] like Figures 1 to 6 As shown, a first guide rod 146 is fixed between the connecting plate 144 and the second slider 143. The first guide rod 146 passes through the interior of one side of the lifting frame 14 and the interior of the second spring 145.

[0040] In use, the second slider 143 and the lifting frame 14 are slidably connected through the first guide rod 146, which can ensure the stability of the lifting frame 14 when it is raised and lowered, and allow the lifting frame 14 to drive the second slider 143 to move left and right, making it easier to adjust the overall height of the lifting frame 14.

[0041] like Figures 1 to 2 As shown, the top of the connecting frame 114 is provided with a telescopic hole 115, and one side of the lifting frame 14 can pass through the interior of the telescopic hole 115.

[0042] When in use, the lifting frame 14 will be pushed upward by the top plate 221. During this process, the lifting frame 14 will pass through the connecting frame 114. In order to avoid the connecting frame 114 affecting the lifting frame 14, the lifting frame 14 can pass through the telescopic hole 115, thereby avoiding interference between the lifting frame 14 and the connecting frame 114.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed milling device for engine cylinder blocks with adaptive angle adjustment, characterized in that: The device includes a support plate, a geared motor mounted on one side of the support plate, a clamp rotatably connected above the support plate, one side of the clamp being fixedly connected to the output shaft of the geared motor, a support frame fixed to one side of the top of the support plate, a sliding cavity formed inside the support frame, a sliding plate slidably connected inside the sliding cavity, a transmission gear fixed to the other side of the clamp, a rack meshing with the bottom end of the transmission gear, the rack slidably connected to the support plate, a connecting frame fixed to one side of the rack, one side of the connecting frame being fixedly connected to the sliding plate, a guide shell provided below the sliding plate, a shifting assembly provided inside the guide shell, an electric telescopic rod provided below the guide shell, a milling motor fixed to the output shaft end of the electric telescopic rod, and a cutting head fixed to the rotating shaft end of the milling motor.

2. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 1, characterized in that: The repositioning component includes a sliding block fixed to the top of the electric telescopic rod. The sliding block is slidably connected inside the guide housing. A bidirectional lead screw is rotatably connected inside the guide housing. The bidirectional lead screw is threadedly connected to the sliding block. A drive component is provided at one end of the bidirectional lead screw.

3. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 2, characterized in that: The drive assembly includes a lifting frame slidably connected inside the guide housing, the end of the bidirectional lead screw is connected to a toothed sleeve via a ratchet structure, a toothed plate is fixed on one side of the lifting frame, the toothed plate is engaged with the toothed sleeve, and a top plate is fixed to the end of the output shaft of the electric telescopic rod.

4. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 1, characterized in that: The top of the support frame is fixed with a first V-shaped frame, the top of the guide shell is fixed with a connecting rod, the connecting rod passes through the interior of the sliding plate, and a guide assembly is provided above the connecting rod.

5. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 4, characterized in that: The guide assembly includes a first slider fixed to the top of the connecting rod, the top of the first slider being close to the top of the inside of the first V-frame, a first spring being sleeved on the outside of the connecting rod, the top of the first spring being fixedly connected to the first slider, and the bottom of the first spring being fixedly connected to the sliding plate.

6. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 3, characterized in that: A second spring is fixed to the top of the lifting frame, and a second slider is fixed to the top of the second spring. A second V-shaped frame is fixed to one side of the support frame, and the top of the second slider is in contact with the inner wall of the second V-shaped frame.

7. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 6, characterized in that: Two connecting plates are fixed on one side of the second slider. A second guide rod passes through the bottom end of the connecting plate. The bottom end of the second guide rod is fixedly connected to the guide shell. A third spring is sleeved on the outside of the second guide rod. The top end of the third spring is fixedly connected to the connecting plate, and the bottom end of the third spring is fixedly connected to the toothed rod.

8. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 7, characterized in that: The height of the second V-frame is greater than the height of the first V-frame, and the length of the inner inclined surface of the second V-frame is greater than the length of the inner inclined surface of the first V-frame.

9. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 7, characterized in that: A first guide rod is fixed between the connecting plate and the second slider. The first guide rod passes through the interior of one side of the lifting frame and the interior of the second spring.

10. The high-speed milling device for engine cylinder block with adaptive angle adjustment according to claim 9, characterized in that: The top of the connecting frame is provided with a telescopic hole, and one side of the lifting frame can pass through the interior of the telescopic hole.

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