A diesel engine cylinder head cross hole depth processing device

Abstract

The application discloses a diesel engine cross-hole depth processing device in the technical field of diesel engines, which comprises two groups of track assemblies, which are respectively arranged at two ports of a cross-hole of a cylinder cover body; abrasive particle assemblies, which comprise an abrasive particle storage tank arranged on one side of a high-position track assembly and a waste particle storage tank arranged on one side of a low-position track assembly, and are used for conveying magnetic abrasive particles into the track assemblies and recycling waste magnetic abrasive particles; grinding liquid assemblies, which comprise a grinding liquid storage tank arranged above the high-position track assembly and a waste liquid storage tank arranged below the low-position track assembly, and are used for conveying grinding liquid into the track assemblies and recycling waste liquid; and two groups of electromagnetic devices, which are respectively arranged in correspondence with the two groups of track assemblies and are used for driving the magnetic abrasive particles in the track assemblies to move at high speed. The device adopts the reciprocating and circulating motion of the magnetic abrasive particles to realize bidirectional grinding of the inner wall of the cross-hole, the processing efficiency is greatly improved, and the device is especially suitable for deep hole processing and guarantees the structural strength of the cylinder cover.

Description

Technical Field

[0001] This invention relates to the field of diesel engine technology, and more specifically to a device for deep machining of cross holes in diesel engine cylinder heads. Background Technology

[0002] As a core component of the engine, the cylinder head of a diesel engine integrates complex oil passages, air passages, and cooling channels. These channels often exist in the form of cross holes, and the depth and machining accuracy of the cross holes directly affect fuel injection efficiency, heat dissipation performance, and overall engine sealing.

[0003] Current methods for machining intersecting holes primarily employ rigid grinding heads (such as rotary files or grinding wheels) in conjunction with fixed supports, driving the grinding head along the hole wall via a preset trajectory. However, this method has several drawbacks. Due to its rigid structure, the rigid grinding head cannot adapt to the curved surfaces of the corners in intersecting holes. In small-angle oblique structures, the grinding head tip is prone to rigid collisions with the hole wall, leading to defects such as excessive rounding and localized over-grinding at the corners. This severely affects the connection accuracy and performance of the intersecting holes, and makes surface quality control of the hole wall difficult. Furthermore, for deep hole machining, the rigid grinding head needs to reciprocate along the hole axis, which is prone to chatter, resulting in low machining efficiency and making it difficult to meet the needs of mass production.

[0004] To address these issues, a deep machining device for cross holes in diesel engine cylinder heads is provided. Summary of the Invention

[0005] The purpose of this invention is to provide a deep machining device for cross holes in diesel engine cylinder heads, which solves the problems of low efficiency and insufficient precision in the existing machining of cross holes in diesel engine cylinder heads.

[0006] The present invention achieves the above objectives through the following technical solutions: A device for deep machining of cross holes in a diesel engine cylinder head, comprising: Two sets of track assemblies are respectively installed at the two ports of the cross holes on the cylinder head body; The abrasive assembly includes an abrasive storage tank located on one side of the high-level track assembly and a waste abrasive storage tank located on one side of the low-level track assembly, for conveying magnetic abrasives into the track assembly and recycling waste magnetic abrasives. The grinding fluid assembly includes a grinding fluid storage tank located above the high-level track assembly and a waste liquid storage tank located below the low-level track assembly, for conveying grinding fluid into the track assembly and recovering waste liquid; Two sets of electromagnetic devices are respectively set up corresponding to the two sets of track components, and are used to drive the magnetic abrasive particles in the track components to accelerate their movement. The two sets of track components and the cross holes together form a closed-loop processing channel for the reciprocating motion of magnetic abrasive particles.

[0007] As a further optimization of the present invention, the track assembly includes a ring tube and a plug tube connected to the ring tube; the ring tube has a first through hole connected to the abrasive assembly and a second through hole connected to the abrasive fluid assembly, and a filter screen is provided in the second through hole; the free end of the plug tube is provided with an expansion sleeve and a positioning plate, and a sealing ring is embedded on the mating surface of the positioning plate.

[0008] As a further optimization of the present invention, an adjustable baffle is hinged at the junction of the insertion tube and the ring tube, and a first driving member is provided for driving the adjustable baffle to rotate.

[0009] As a further optimization of the present invention, the electromagnetic device is coaxially disposed in the central region of the ring pipe.

[0010] As a further optimization of the present invention, the grinding slurry storage tank is provided with at least two independent storage cavities for storing different types of grinding slurries. The bottom of the grinding slurry storage tank is provided with multiple outlet pipes that are connected to the corresponding storage cavities and extend to the annular pipe. The outlet pipes are provided with solenoid valves. The top of the waste liquid storage tank is provided with a feed pipe. The top of the feed pipe is provided with a movable sealing plate for closing the second through hole, and a drive unit for driving the movable sealing plate to open and close.

[0011] As a further optimization of the present invention, the driving unit includes an arc-shaped rack fixedly mounted on a movable closed plate, a gear meshing with the arc-shaped rack, and a second driving member for driving the gear to rotate, the second driving member being fixedly mounted on the waste liquid storage tank.

[0012] As a further optimization of the present invention, the abrasive storage box is provided with at least two independent storage cavities for storing magnetic abrasives of different particle sizes; both the abrasive storage box and the waste particle storage box are provided with a movable sealing plate for sealing the first through hole, and a driving unit for driving the movable sealing plate to open and close; the first through hole and the waste particle storage box are tangentially connected.

[0013] As a further optimization of the present invention, a support frame is also included. The support frame includes a main frame, two movable plates slidably disposed on two support plates of the main frame, and two mounting plates slidably disposed on corresponding movable plates. A first fastener for locking the relative position of the main frame and the movable plates is provided between them. A first slot for the first fastener to pass through is provided on the support plate of the main frame. A second fastener for locking the relative position of the movable plates and the mounting plates is provided between them. A second slot for the second fastener to pass through is provided on the movable plates. The mounting plates are used to install the track assembly, abrasive assembly, abrasive fluid assembly, and electromagnetic equipment. A fixing plate is also fixedly disposed on the main frame.

[0014] The beneficial effects of this invention are as follows: 1. This invention uses the reciprocating cyclic motion of magnetic abrasive particles to achieve bidirectional grinding of the inner wall of the cross hole, which greatly improves the processing efficiency and is especially suitable for deep hole processing. Through non-rigid contact processing, stress concentration and processing damage at the corner of the cross hole are reduced, ensuring the structural strength of the cylinder head.

[0015] 2. The multi-cavity design of the grinding fluid storage tank of the present invention enables rapid switching between different types of grinding fluids. Combined with the multi-size abrasive storage of the abrasive grain storage tank, it can meet the full-process processing of cross holes from coarse grinding to fine grinding without changing equipment or interrupting production. The processing quality of the inner wall of the cross holes can be further improved.

[0016] 3. The adjustable support frame of this invention can achieve multi-dimensional position adjustment, adapt to the processing requirements of cross holes at different angles, and greatly improve the versatility of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional assembly diagram of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the track assembly structure of the present invention; Figure 5 This is a schematic diagram of the connection structure between the waste liquid storage tank and the ring pipe of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the connection structure between the abrasive assembly and the annular tube of the present invention; Figure 8 This is a schematic diagram of the support frame structure of the present invention.

[0018] In the picture: 1. Track assembly; 101. Ring pipe; 102. Insert pipe; 103. Adjustable baffle; 104. Expansion sleeve; 105. Positioning plate; 106. Sealing ring; 107. First driving component; 108. First through hole; 109. Second through hole; 2. Electromagnetic device; 3. Cylinder head body; 4. Abrasive assembly; 401. Abrasive storage tank; 402. Waste particle storage tank; 5. Grinding fluid assembly; 501. Grinding fluid storage tank; 502. Waste liquid storage tank; 503. Discharge pipe; 504. Feed pipe; 505. Movable sealing plate; 506. Arc rack; 507. Gear; 508. Second driving component; 6. Support frame; 601. Main frame body; 602. Moving plate; 603. Mounting plate; 604. First slot; 605. Second slot; 606. Fixing plate. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1 To address the issues of low efficiency and insufficient precision in the existing machining of cross holes (especially complex angled cross and deep hole structures) in diesel engine cylinder heads, please refer to... Figures 1-5 The present invention provides a device for deep machining of cross holes in a diesel engine cylinder head, comprising: Two sets of track assemblies 1 are respectively assembled at the two ports of the cross holes on the cylinder head body 3; The abrasive assembly 4 includes an abrasive storage tank 401 located on one side of the high-level track assembly 1 and a waste abrasive storage tank 402 located on one side of the low-level track assembly 1, for conveying magnetic abrasives into the track assembly 1 and recycling waste magnetic abrasives. The grinding fluid assembly 5 includes a grinding fluid storage tank 501 located above the high-level track assembly 1 and a waste liquid storage tank 502 located below the low-level track assembly 1, for conveying grinding fluid into the track assembly 1 and recovering waste liquid. Two sets of electromagnetic devices 2 are respectively set to correspond to two sets of track components 1, and are used to drive the magnetic abrasive particles in the track components 1 to accelerate their movement. Among them, the two sets of track components 1 together with the cross holes form a closed-loop processing channel for the magnetic abrasive particles to circulate and reciprocate.

[0021] The track assembly 1 includes a ring tube 101 and a connector 102 connected to the ring tube 101. The ring tube 101 has a first through hole 108 connected to the abrasive assembly 4 and a second through hole 109 connected to the abrasive fluid assembly 5. A filter screen is provided in the second through hole 109. The free end of the connector 102 is provided with a tightening sleeve 104 and a positioning plate 105. A sealing ring 106 is embedded on the mating surface of the positioning plate 105. An adjustable baffle 103 is hinged at the junction of the connector 102 and the ring tube 101, and a first driving member 107 for driving the adjustable baffle 103 to rotate is provided. The first driving member 107 can be specifically driven by a motor. During installation, the connectors 102 of the two sets of track assemblies 1 are fixed to the two ports of the cross hole by the tightening sleeve 104. The positioning plate 105 is tightly fitted to the surface of the cylinder head body 3 by the sealing ring 106 to ensure the sealing of the processing channel.

[0022] Electromagnetic device 2 is coaxially disposed in the central region of ring tube 101. The magnetic field of electromagnetic device 2 covers the inner channel of ring tube 101, and its magnetic field direction is distributed along the circumference of ring tube 101. It is used to apply Lorentz force or magnetic gradient force to the magnetic abrasive particles in ring tube 101, so as to realize the continuous acceleration of magnetic abrasive particles in the ring path, and inject them into the cross hole through insertion tube 102 for impact material removal.

[0023] Magnetic abrasive particles are fed into the annular tube 101 of the high-level track assembly 1 by the abrasive particle storage tank 401. Simultaneously, grinding fluid is injected into the annular tube 101 by the grinding fluid storage tank 501. The magnetic abrasive particles and grinding fluid form a mixed flow in the annular tube 101. The two sets of electromagnetic devices 2 are activated, and a periodic driving force is applied to the magnetic abrasive particles in the annular tube 101 through an alternating magnetic field, causing the magnetic abrasive particles to accelerate along the annular tube 101. After acceleration, the magnetic abrasive particles are guided by the magnetic field to enter the cross hole through the insertion tube 102 and grind the hole wall. After the magnetic abrasive particles reach the other end of the cross hole, they are guided into the low-level track assembly 1 by the adjustable baffle 103. They are accelerated again by the electromagnetic device 2 and return to the high-level track assembly 1 along the reverse channel, forming a reciprocating closed-loop processing. During the processing, the waste particle storage tank 402 collects the magnetic abrasive particles that have exceeded the wear limit, and the waste fluid storage tank 502 collects the waste grinding fluid containing debris.

[0024] The reciprocating motion of magnetic abrasive particles enables bidirectional grinding of the inner wall of the cross hole, greatly improving processing efficiency. It is especially suitable for deep hole processing. Through non-rigid contact processing, stress concentration and processing damage at the corners of the cross hole are reduced, ensuring the structural strength of the cylinder head body 3.

[0025] Example 2 Based on Example 1, in order to solve the problem that traditional machining methods use only one type of grinding fluid and abrasive grains, which cannot meet the needs of multi-process machining of cross holes, such as... Figures 4-7 As shown, the grinding fluid storage tank 501 has at least two independent storage chambers for storing different types of grinding fluid (such as cutting type, lubricating type, etc.). The bottom of the grinding fluid storage tank 501 is provided with multiple outlet pipes 503 that are connected to the corresponding storage chambers and extend to the annular pipe 101. The outlet pipes 503 are equipped with solenoid valves. The top of the waste liquid storage tank 502 is provided with a feed pipe 504. The top of the feed pipe 504 is provided with a movable sealing plate 505 for closing the second through hole 109, and a drive unit for driving the movable sealing plate 505 to open and close.

[0026] The drive unit includes an arc-shaped rack 506 fixedly mounted on the movable closed plate 505, a gear 507 meshing with the arc-shaped rack 506, and a second drive member 508 for driving the gear 507 to rotate. The second drive member 508 is fixedly mounted on the waste liquid storage tank 502, and the second drive member 508 can be specifically driven by a motor.

[0027] By controlling the opening of the solenoid valve of the outlet pipe 503 corresponding to the storage chamber of the grinding slurry storage tank 501, grinding slurry is added into the ring pipe 101. When the waste liquid is recycled, the second driving component 508 drives the gear 507 to rotate, which drives the movable sealing plate 505 to open through the arc rack 506, so that the second through hole 109 is connected to the feed pipe 504, and the waste grinding slurry containing debris flows into the waste liquid storage tank 502 along the inner wall of the ring pipe 101.

[0028] The abrasive storage tank 401 has at least two independent storage chambers for storing magnetic abrasive grains of different sizes. The magnetic abrasive grains are specifically selected from composite magnetic abrasives with high magnetic permeability and high wear resistance. The coarse grinding storage chamber is equipped with abrasive grains with a diameter of 0.3-0.5 mm, and the fine grinding storage chamber is equipped with abrasive grains with a diameter of 0.1-0.2 mm. Both the abrasive storage tank 401 and the waste grain storage tank 402 are equipped with a movable sealing plate 505 for sealing the first through hole 108, and a driving unit for driving the opening and closing of the movable sealing plate 505. The first through hole 108 and the waste grain storage tank 402 are tangentially arranged. The tangential design allows the waste magnetic abrasive grains to enter the waste grain storage tank 402 smoothly along the tangential direction.

[0029] In the rough grinding stage, the movable sealing plate 505 corresponding to the storage cavity of the abrasive storage tank 401 storing large-diameter magnetic abrasive particles is opened, and material is fed into the ring pipe 101. After the rough grinding is completed, the movable sealing plate 505 of the waste particle storage tank 402 is opened. Since the first through hole 108 is tangent to the waste particle storage tank 402, the high-speed flowing waste magnetic abrasive particles enter the waste particle storage tank 402 along the tangential direction under the action of centrifugal force, achieving rapid deburring. Then, fine grinding is performed. The movable sealing plate 505 corresponding to the storage cavity of the abrasive storage tank 401 storing small-diameter magnetic abrasive particles is opened, and material is fed into the ring pipe 101, achieving mirror finish.

[0030] The multi-cavity design of the grinding slurry tank 501 enables rapid switching between different types of grinding slurries. Combined with the multi-size abrasive storage of the abrasive grain tank 401, it can meet the full-process processing of cross holes from rough grinding to fine grinding without changing equipment or interrupting production. This solves the problem that the traditional processing method has a single type of grinding slurry and abrasive grain, which cannot meet the needs of multi-process processing of cross holes.

[0031] Example 3 Based on Embodiments 1 and 2, in order to improve the versatility of the device and to handle the machining of intersecting holes at arbitrary angles, such as... Figure 1 , Figure 8 As shown, it also includes a support frame 6, which includes a main frame 601, two movable plates 602 slidably disposed on two support plates of the main frame 601, and two mounting plates 603 slidably disposed on the corresponding movable plates 602.

[0032] A first fastener for locking the relative positions of the main frame 601 and the movable plate 602 is provided between them. A first slot 604 for the first fastener to pass through is provided on the support plate of the main frame 601. A second fastener for locking the relative positions of the movable plate 602 and the mounting plate 603 is provided between them. A second slot 605 for the second fastener to pass through is provided on the movable plate 602. The mounting plate 603 is used to install the track assembly 1, the abrasive assembly 4, the abrasive fluid assembly 5, and the electromagnetic device 2.

[0033] Furthermore, a fixing plate 606 is also fixedly provided on the main frame 601. The fixing plate 606 on the main frame 601 fixes the entire support frame 6 to the processing station, ensuring the stability of the device during the processing.

[0034] Based on the angle and position parameters of the cross holes in the diesel engine cylinder head body 3, loosen the first fastener between the main frame 601 and the moving plate 602, push the moving plate 602 to slide along the support plate of the main frame 601, adjust the position of the moving plate 602 in the horizontal direction through the first slot 604, and rotate the moving plate 602 to a suitable angle to initially match the distance between the two ports of the cross holes. Loosen the second fastener between the moving plate 602 and the mounting plate 603, push the mounting plate 603 to slide along the moving plate 602, fine-tune the position of the mounting plate 603 using the second slot 605, and rotate the mounting plate 603 to a suitable angle so that the track assembly 1, abrasive assembly 4, abrasive fluid assembly 5 and electromagnetic device 2 installed on the mounting plate 603 are precisely aligned with the outlet of the cross holes. After adjustment, tighten the first and second fasteners to complete the fixation.

[0035] The sliding of the movable plate 602 along the main frame 601 and the sliding of the mounting plate 603 along the movable plate 602 enable multi-dimensional position adjustment, which can adapt to the processing requirements of cross holes at different angles and greatly improve the versatility of the device.

[0036] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A device for deep machining of cross holes in a diesel engine cylinder head, characterized in that, include: Two sets of track assemblies (1) are respectively installed at the two ports of the cross holes on the cylinder head body (3); The abrasive assembly (4) includes an abrasive storage tank (401) located on one side of the high-level track assembly (1) and a waste abrasive storage tank (402) located on one side of the low-level track assembly (1), for conveying magnetic abrasives into the track assembly (1) and recycling waste magnetic abrasives. The grinding fluid assembly (5) includes a grinding fluid storage tank (501) located above the high-level track assembly (1) and a waste liquid storage tank (502) located below the low-level track assembly (1), for conveying grinding fluid into the track assembly (1) and recovering waste liquid; Two sets of electromagnetic devices (2) are respectively set to correspond to the two sets of track components (1) and are used to drive the magnetic abrasive particles in the track components (1) to accelerate their movement; Among them, the two sets of track components (1) together with the cross holes form a closed-loop processing channel for the magnetic abrasive particles to circulate and reciprocate. The track assembly (1) includes a ring tube (101) and a plug tube (102) connected to the ring tube (101). An adjustable baffle (103) is hinged at the junction of the insertion tube (102) and the ring tube (101), and a first driving member (107) is used to drive the adjustable baffle (103) to rotate. The electromagnetic device (2) is coaxially located in the central region of the ring tube (101).

2. The diesel engine cylinder head cross hole depth machining device according to claim 1, characterized in that, The ring tube (101) is provided with a first through hole (108) that communicates with the abrasive assembly (4) and a second through hole (109) that communicates with the abrasive fluid assembly (5). A filter screen is provided in the second through hole (109). The free end of the insertion tube (102) is provided with an expansion sleeve (104) and a positioning plate (105), and a sealing ring (106) is embedded on the mating surface of the positioning plate (105).

3. The diesel engine cylinder head cross hole depth machining device according to claim 2, characterized in that, The grinding fluid storage tank (501) is provided with at least two independent storage cavities for storing different types of grinding fluid. The bottom of the grinding fluid storage tank (501) is provided with multiple outlet pipes (503) that are connected to the corresponding storage cavities and extend to the end of the ring pipe (101). The outlet pipes (503) are provided with solenoid valves. The waste liquid storage tank (502) is provided with a feed pipe (504) at the top, and the feed pipe (504) is provided with a movable sealing plate (505) for sealing the second through hole (109) at the top, and a drive unit for driving the movable sealing plate (505) to open and close.

4. The diesel engine cylinder head cross hole depth machining device according to claim 3, characterized in that, The drive unit includes an arc-shaped rack (506) fixed on a movable closed plate (505), a gear (507) meshing with the arc-shaped rack (506), and a second drive member (508) for driving the gear (507) to rotate. The second drive member (508) is fixed on the waste liquid storage tank (502).

5. The diesel engine cylinder head cross hole depth machining device according to claim 2, characterized in that, The abrasive storage tank (401) is provided with at least two independent storage cavities for storing magnetic abrasives of different particle sizes; Both the abrasive storage tank (401) and the waste particle storage tank (402) are provided with a movable sealing plate (505) for sealing the first through hole (108), and a driving unit for driving the movable sealing plate (505) to open and close. The first through hole (108) is tangentially connected to the waste pellet storage tank (402).

6. The diesel engine cylinder head cross hole depth machining device according to claim 1, characterized in that, It also includes a support frame (6), which includes a main frame (601), two movable plates (602) slidably disposed on two support plates of the main frame (601), and two mounting plates (603) slidably disposed on the corresponding movable plates (602). A first fastener is provided between the main frame (601) and the movable plate (602) for locking their relative positions. A first slot (604) is provided on the support plate of the main frame (601) for the first fastener to pass through. A second fastener is provided between the movable plate (602) and the mounting plate (603) for locking their relative positions. A second slot (605) is provided on the movable plate (602) for the second fastener to pass through. The mounting plate (603) is used to install the track assembly (1), the abrasive assembly (4), the abrasive fluid assembly (5), and the electromagnetic device (2). A fixing plate (606) is also fixedly installed on the main frame (601).

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