Engine cylinder cover machining mechanism

Abstract

The invention relates to the technical field of engine machining equipment, in particular to an engine cylinder cover machining mechanism which comprises a supporting frame, a base body box is connected to the supporting frame, and an opening is formed in the top wall of the base body box; the multiple enclosure rods are in sliding connection with the base body box, the sliding directions of the enclosure rods are vertically arranged, at least one containing cavity is defined by the multiple enclosure rods, and abutting springs are connected between the enclosure rods and the supporting frame; the supporting beads are located in the containing cavities, the diameter of each supporting bead is larger than that of the gap between every two adjacent enclosure rods, and the supporting beads form at least one deformation supporting body; the extrusion unit is used for pushing the supporting bead to abut against the bottom wall of the engine cylinder cover, and the extrusion unit is connected with the base body box and the supporting bead; the end face limiting unit is connected with the supporting frame, and the end face limiting unit is used for abutting against the end face of the engine cylinder cover; the clamping device has the effect that the clamping device can adapt to machining and clamping operation of engine cylinder covers of different models.

Description

Technical Field

[0001] The present application relates to the technical field of engine processing equipment, and in particular to an engine cylinder head processing mechanism. Background Art

[0002] The engine cylinder head is a component installed on the cylinder block, which closes the cylinder from the top and forms a combustion chamber. It mainly has the following functions: Sealing and heat dissipation: The cylinder head can seal the cylinder to ensure that the gas does not leak during the combustion process; at the same time, the coolant channel and oil channel on the cylinder head can effectively provide cooling and lubrication for the cylinder, help dissipate heat, and prevent the engine from overheating; Support and fixation: The cylinder head supports the accessories of the entire engine, such as the crankshaft, camshaft, etc., and fixes the valves, valve drive mechanisms and other related components to ensure the stable operation of the engine; Valve system: The cylinder head has structures such as valves and valve guides, which together with the valve cover form part of the engine's valve system, responsible for accurately controlling the intake and exhaust process to improve combustion efficiency.

[0003] The prior art discloses a fixture for drilling and milling the end face of an engine cylinder head, comprising a base, a clamping mechanism for clamping the cylinder head and a positioning mechanism for positioning the cylinder head, and also comprising a panel arranged on the base for placing the cylinder head, the base comprising a bottom plate vertically connected to the panel and a rib plate arranged between the bottom plate and the panel, the clamping mechanism and the positioning mechanism are arranged on the panel, the positioning mechanism comprises a plurality of supporting pins with a flat top surface, the cylinder head is placed with its bottom surface on a supporting plane formed by the supporting pins, the base is also provided with a gas inspection device for detecting the tightness of the fit between the supporting pins and the bottom surface of the cylinder head; the gas inspection device comprises an air source, a sensor, an alarm, an air pipe tap provided on the base and an air pipe joint connected to the supporting pin, an air hole extending to the top surface is provided in the supporting pin, the air hole passes through the entire supporting pin along the length direction of the supporting pin, the air pipe joint of the gas inspection device is connected to the air hole of the supporting pin, the air pipe tap is connected between the air source and the air pipe joint through a hose, the sensor is used to detect the air pressure in the hose, and the sensor is connected to the alarm.

[0004] Regarding the above-mentioned related technologies, the top wall shapes and structures of engine cylinder heads of different models will vary greatly due to the influence of automobile structural design, and specific fixtures can only be applied to a certain specific model of engine cylinder head, which affects the applicability of the engine cylinder head processing fixture. Summary of the invention

[0005] In order to adapt to the processing and clamping operations of engine cylinder heads of different models, the present application provides an engine cylinder head processing mechanism.

[0006] The present application provides an engine cylinder head processing mechanism adopting the following technical solution: An engine cylinder head processing mechanism, comprising: A support frame, to which a base box is connected, and a top wall of the base box is provided with an opening; A plurality of enclosure rods, wherein the enclosure rods are slidably connected to the base box, and the sliding direction of the enclosure rods is vertically arranged, the plurality of enclosure rods enclose at least one accommodating cavity, and an abutment spring is connected between the enclosure rods and the support frame; A plurality of supporting beads, wherein the supporting beads are located in the accommodating cavity, and the diameter of the supporting beads is larger than the gap between two adjacent enclosure rods, and the plurality of supporting beads form at least one deformable supporting body; A plurality of extrusion units for pushing the support beads to abut against the bottom wall of the engine cylinder head, the extrusion units are connected to the base box, and the extrusion units are connected to the support beads; A plurality of end surface limiting units are connected to the support frame and are used to abut against the end surface of the engine cylinder head.

[0007] By adopting the above technical solution, the engine cylinder head is first placed in the base box. At this time, the bottom wall of the engine cylinder head abuts against the top wall of the guard rod, so that the abutting spring connected to the guard rod is compressed to varying degrees. Then, the end face position of the engine cylinder head is limited by the end face limiting unit. Then, the extrusion unit applies force to the deformable support body composed of multiple support beads. The deformable support body moves toward one side of the engine cylinder head and lifts the engine cylinder head until the end face of the engine cylinder head abuts against the horizontal plane limited by the end face limiting unit. At this time, the engine cylinder head is completely fixed. Then, milling of the end face of the engine cylinder head can be started. Since the lower end extrusion is by The protective rods and support beads are used to assist in the adaptation of engine cylinder heads of different models; the designed engine cylinder head processing mechanism can fix the base box through the support frame, and the base box can be used to guide the protective rods. The basic support of the engine cylinder head can be achieved through multiple protective rods, and a receiving cavity for accommodating the support beads can be formed. The lower end of the engine cylinder head can be extruded by the support beads in conjunction with the extrusion unit, and the adaptation of engine cylinder heads of different models can be achieved. The end face limiting unit can limit the height of the end face of the engine cylinder head, and then the processing and clamping operations of engine cylinder heads of different models can be achieved in conjunction with the lower end extrusion.

[0008] In a specific embodiment, the extrusion unit comprises A contoured push plate, the contoured push plate is located in the accommodating cavity, and a sliding gap between the contoured push plate and the enclosure rod is smaller than a diameter of the support bead; A lifting cylinder is connected to the support frame, and a piston rod of the lifting cylinder passes through the base box and is connected to the contoured push plate, and the piston rod of the lifting cylinder is staggered with the base box.

[0009] By adopting the above technical solution, the extrusion unit is designed, which can push the contoured push plate up and down through the jacking cylinder. The contoured push plate can cooperate with the restriction of the guard rod to realize the movement of multiple support beads toward one side of the engine cylinder head, thereby realizing the support of the engine cylinder head.

[0010] In a specific possible implementation manner, a plurality of reinforcing ribs are connected to the contoured push plate, the plurality of reinforcing ribs are distributed around the circumference of the lifting cylinder piston rod, and one end of the reinforcing ribs abuts against the lifting cylinder piston rod.

[0011] By adopting the above technical solution, the reinforcing ribs designed can improve the structural strength of the contoured push plate and reduce the possibility of deformation of the contoured push plate when pushed by the jacking cylinder.

[0012] In a specific implementation scheme, the end surface limiting unit includes A fixing column, the fixing column is connected to the supporting frame and the fixing column is vertically arranged; A sliding pressure rod, wherein the sliding pressure rod is slidably connected to the fixed column, and a rotation gap is left between the sliding pressure rod and the fixed column; A lifting mechanism is used for driving the sliding pressure rod to lift and lower, wherein the lifting mechanism is connected to the support frame, and the lifting mechanism is connected to the sliding pressure rod.

[0013] By adopting the above technical solution, the sliding pressure rod is first rotated to an angle that does not interfere with the engine cylinder head, and then the engine cylinder head is placed in the base box, and then the sliding pressure rod is rotated to reset. At this time, the bottom walls of the multiple sliding pressure rods form a limit horizontal plane. At this time, the bottom wall of the engine cylinder head abuts against the top wall of the enclosure rod, so that the abutment spring connected to the enclosure rod is compressed to varying degrees, and then force is applied to the deformable support body composed of the multiple support beads through the extrusion unit, and the deformable support body moves toward one side of the engine cylinder head and lifts the engine cylinder head until the end face of the engine cylinder head and the sliding pressure rod form The limit horizontal plane abuts against the engine cylinder head, at this time the engine cylinder head is completely fixed, and then the milling of the end face of the engine cylinder head can be started. Since the lower end extrusion is carried out with the help of the guard rod and the support bead, it can be adapted to engine cylinder heads of different models; the designed end face limit unit provides a sliding guide for the sliding pressure rod through the fixed column, and the sliding pressure rod can cooperate with the lifting mechanism to limit the top wall of the engine cylinder head, and then cooperate with the extrusion unit below to fix the position of the engine cylinder head, and the lifting mechanism can drive the sliding pressure rod to rise and fall, thereby changing the position of the limit horizontal plane.

[0014] In a specific feasible implementation scheme, a plurality of test holes are provided on the sliding pressure rod, and the plurality of test holes are distributed along the radial direction of the fixed column, and a pressure supply pump is connected to the sliding pressure rod, an air channel is formed in the sliding pressure rod, the pressure supply pump is connected to the inner cavity of the test hole through the air channel, and an air pressure sensor is connected to the inner cavity of the test hole.

[0015] By adopting the above technical solution, the designed test hole and pressure supply pump can obtain the fit between the sliding pressure rod and the end face of the engine cylinder head through air pressure detection after the end face of the engine cylinder head is in contact with the bottom wall of the sliding pressure rod, thereby avoiding the metal debris generated by milling from affecting the horizontality of the end face of the engine cylinder head.

[0016] In a specific possible implementation scheme, a supporting oblique rod is slidably connected to the fixed column, and a rotation gap is left between the supporting oblique rod and the fixed column, and the end of the supporting oblique rod away from the fixed column is connected to the sliding pressure rod.

[0017] By adopting the above technical solution, the designed supporting diagonal rod can improve the position stability of the sliding pressure rod.

[0018] In a specific embodiment, the lifting mechanism includes A lifting cylinder, the lifting cylinder is connected to the support frame, and the piston rod of the lifting cylinder is arranged in the vertical direction; A driving block is connected to the piston rod of the lifting cylinder, and a sliding slot is formed on the driving block for the sliding pressure rod and the supporting oblique rod to extend into, and the driving block slides relatively with the sliding pressure rod and the supporting oblique rod.

[0019] By adopting the above technical solution, a lifting mechanism is designed, which can drive the driving block to rise and fall along the axial direction of the fixed column. The driving block can drive the sliding pressure rod and the supporting oblique rod to rise and fall while realizing the rotation of the sliding pressure rod and the supporting oblique rod around the fixed rod.

[0020] In a specific feasible implementation scheme, the accommodating cavity surrounded by the plurality of the enclosing rods is a columnar cavity, and the accommodating cavity is outer-circuited with a plurality of reinforcing rings, the reinforcing rings are in sliding contact with the enclosing rods, and a spacing spring is connected between two adjacent reinforcement rings, and the spacing spring is sleeved outside the accommodating cavity.

[0021] By adopting the above technical solution, the designed reinforcement ring can ensure the position stability of the guardrail when the extrusion unit applies thrust to the support bead, and the spacing between multiple reinforcement rings can be maintained by the spacing spring.

[0022] In a specific possible implementation manner, the outer wall of the enclosure rod is arranged in an arc shape and is adapted to the shape of the inner circumference of the reinforcement ring.

[0023] By adopting the above technical solution, the guardrail and reinforcement ring are designed with matching shapes, which can increase the contact area between the guardrail and the reinforcement ring, thereby reducing the force per unit area borne by the reinforcement ring when the guardrail is under pressure.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed engine cylinder head processing mechanism can fix the base box through the support frame, and the base box can be used to guide the guard rod. The basic support of the engine cylinder head can be achieved through multiple guard rods, and a receiving cavity for accommodating support beads can be formed. The lower end of the engine cylinder head can be extruded by the support beads in cooperation with the extrusion unit, and it can be adapted to engine cylinder heads of different models. The height of the end face of the engine cylinder head can be limited by the end face limiting unit, and then the processing and clamping operations of engine cylinder heads of different models can be achieved in cooperation with the lower end extrusion.

[0025] 2. The designed engine cylinder head processing mechanism provides a sliding guide for the sliding pressure rod through the fixed column. The sliding pressure rod can cooperate with the lifting mechanism to limit the top wall of the engine cylinder head, and then cooperate with the extrusion unit below to fix the position of the engine cylinder head. The lifting mechanism can drive the sliding pressure rod to rise and fall, thereby changing the position of the limit horizontal plane.

[0026] 3. The designed engine cylinder head processing mechanism can obtain the fit between the sliding pressure rod and the end face of the engine cylinder head through the test hole and the pressure pump after the end face of the engine cylinder head is attached to the bottom wall of the sliding pressure rod through air pressure detection, so as to avoid the metal debris generated by milling from affecting the horizontality of the end face of the engine cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the engine cylinder head processing mechanism of the embodiment of the present application.

[0028] Figure 2 yes Figure 1 sectional view of .

[0029] Figure 3 is Figure 2 Schematic diagram of the structure after adding reinforcement rings and spacer springs to the foundation.

[0030] Figure 4 is Figure 3 Schematic diagram of the structure after adding end face limit units to the basis.

[0031] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0032] Figure 6 yes Figure 4 Sectional view in .

[0033] Explanation of the accompanying drawings: 1. Support frame; 2. Base box; 3. Enclosing rod; 4. Abutment spring; 5. Support bead; 6. Extrusion unit; 61. Contour push plate; 62. Lifting cylinder; 63. Reinforcement rib; 7. End face limit unit; 71. Fixed column; 72. Sliding pressure rod; 721. Test hole; 73. Lifting mechanism; 731. Lifting cylinder; 732. Drive block; 74. Support diagonal rod; 75. Pressure supply pump; 8. Reinforcement ring; 9. Spacer spring. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The embodiment of the present application discloses an engine cylinder head processing mechanism.

[0036] Reference Figure 1 A cylinder head processing mechanism for an engine includes a support frame 1, a base box 2 and a plurality of retaining rods 3. The base box 2 is welded and fixed on the support frame 1, and an opening is set on the top wall of the base box 2. The retaining rods 3 are set through the base box 2, and the retaining rods 3 are slidably connected to the base box 2. The retaining rods 3 are vertically arranged and slide in the vertical direction. A contact spring 4 is welded and fixed to the lower end of the retaining rod 3. The end of the abutment spring 4 away from the retaining rod 3 is welded and fixed to the support frame 1. The plurality of retaining rods 3 enclose at least one accommodating cavity. In the present application, the plurality of retaining rods 3 can enclose one accommodating cavity, two accommodating cavities, or three accommodating cavities, as long as the support for the engine cylinder head can be achieved. In the present embodiment, the plurality of retaining rods 3 enclose three accommodating cavities.

[0037] Reference Figure 1 and Figure 2 Furthermore, in order to achieve support for the engine cylinder head, the engine cylinder head processing mechanism also includes a plurality of support beads 5 and a plurality of extrusion units 6. The support beads 5 are located in the accommodating cavity, and the diameter of the support beads 5 is larger than the gap between two adjacent retaining rods 3. The plurality of support beads 5 form at least one deformable support body. The number of deformable support bodies in the present application is consistent with the number of accommodating cavities. The extrusion unit 6 is connected to the base box 2, and the extrusion unit 6 is connected to the support beads 5, so as to push the support beads 5 to abut against the bottom wall of the engine cylinder head.

[0038] Reference Figure 2Specifically, the extrusion unit 6 includes a contoured push plate 61 and a lifting cylinder 62. The contoured push plate 61 is located in the accommodating cavity, and the sliding gap between the contoured push plate 61 and the enclosure rod 3 is smaller than the diameter of the support bead 5 to prevent the support bead 5 from falling through the sliding gap between the contoured push plate 61 and the enclosure rod 3. The lifting cylinder 62 is bolted to the support frame 1, and a clearance hole is provided on the base box 2. The piston rod of the lifting cylinder 62 passes through the base box 2 through the clearance hole and is bolted to the contoured push plate 61. The piston rod of the lifting cylinder 62 is staggered with the base box 2 through the clearance hole, and the piston rod of the lifting cylinder 62 is axially vertically arranged.

[0039] Reference Figure 2 Furthermore, in order to improve the structural strength of the profiling push plate 61 and thereby reduce the possibility of deformation of the profiling push plate 61 during the rising process of the piston rod of the jacking cylinder 62, a plurality of reinforcing ribs 63 are welded and fixed on the profiling push plate 61. The reinforcing ribs 63 are distributed around the circumference of the piston rod of the jacking cylinder 62, and one end of the reinforcing rib 63 abuts against the piston rod of the jacking cylinder 62.

[0040] Reference Figure 3 The lifting cylinder 62 applies force to the contoured push plate 61 so that the contoured push plate 61 squeezes the deformed support body during its upward movement, so that the support beads 5 produce a horizontal squeezing force on the guardrail 3. In order to ensure the position stability of the guardrail 3, the accommodating cavity is a columnar cavity, and a plurality of reinforcing rings 8 are sleeved on the outer periphery of the accommodating cavity. The reinforcing rings 8 are slidably connected to the guardrail 3, and a spacing spring 9 is welded between two adjacent reinforcement rings 8. The spacing spring 9 is sleeved outside the accommodating cavity to maintain the spacing between two adjacent reinforcement rings 8; further, the outer wall of the guardrail 3 is arranged in an arc shape, and the outer wall of the guardrail 3 is adapted to the inner peripheral shape of the reinforcement ring 8, thereby increasing the contact area between the guardrail 3 and the reinforcement ring 8.

[0041] Reference Figure 4 On the basis of the above-mentioned technical solution, it is also necessary to limit the height of the end face of the engine cylinder head, so as to fix the position of the engine cylinder head. Therefore, the engine cylinder head processing mechanism also includes an end face limiting unit 7, which is connected to the support frame 1, and the end face limiting unit 7 is used to abut against the end face of the engine cylinder head.

[0042] Reference Figure 5Specifically, the end face limiting unit 7 includes a fixed column 71, a sliding pressure rod 72 and a lifting mechanism 73. The fixed column 71 is welded and fixed to the support frame 1, and the fixed column 71 is vertically arranged. The sliding pressure rod 72 is slidably connected to the fixed column 71. A rotation gap is left between the sliding pressure rod 72 and the fixed column 71 to facilitate the rotation of the sliding pressure rod 72 around the fixed column 71, and the bottom wall of the sliding pressure rod 72 is horizontally arranged. The lifting mechanism 73 is connected to the support frame 1, and the lifting mechanism 73 is connected to the sliding pressure rod 72, which is used to drive the sliding pressure rod 72 to rise and fall.

[0043] Reference Figure 5 Furthermore, in order to ensure the horizontality of the bottom wall of the sliding pressure rod 72, a supporting oblique rod 74 is slidably connected to the fixed column 71, and a rotation gap is left between the supporting oblique rod 74 and the fixed column 71 to facilitate the supporting oblique rod 74 to rotate around the fixed column 71 with the sliding pressure rod 72, and the end of the supporting oblique rod 74 away from the fixed column 71 is welded and fixed to the sliding pressure rod 72 to form a triangular reinforcement structure.

[0044] Reference Figure 5 Specifically, the lifting mechanism 73 includes a lifting cylinder 731 and a driving block 732. The lifting cylinder 731 is bolted to the support frame 1, and the piston rod of the lifting cylinder 731 is arranged in the vertical direction. The driving block 732 is bolted to the piston rod of the lifting cylinder 731, and a sliding groove is formed on the driving block 732 for the sliding pressure rod 72 and the supporting oblique rod 74 to extend into. The driving block 732 slides relative to the sliding pressure rod 72 and the supporting oblique rod 74.

[0045] Reference Figure 6 Furthermore, a plurality of test holes 721 are provided on the sliding pressure rod 72, and the plurality of test holes 721 are distributed along the radial direction of the fixing column 71, and a pressure supply pump 75 is bolted to the sliding pressure rod 72, and a pressure supply pump 75 is formed inside the sliding pressure rod 72, and the pressure supply pump 75 is connected to the inner cavity of the test hole 721 through an air passage, and an air pressure sensor is embedded in the inner cavity of the test hole 721. After the bottom wall of the sliding pressure rod 72 is in contact with the end face of the engine cylinder head, the air passage is pressurized by the pressure supply pump 75, and then the pressure change of the air pressure sensor is observed to determine whether there is metal debris interfering with the end face positioning of the engine cylinder head.

[0046] The working principle of an engine cylinder head processing mechanism in the embodiment of the present application is as follows: first, the sliding pressure rod 72 is rotated to an angle that does not interfere with the engine cylinder head, and then the engine cylinder head is placed in the base box 2, and then the sliding pressure rod 72 is rotated to reset. At this time, the bottom walls of the plurality of sliding pressure rods 72 form a limit horizontal plane. At this time, the bottom wall of the engine cylinder head abuts against the top wall of the enclosure rod 3, so that the abutment spring 4 connected to the enclosure rod 3 is compressed to varying degrees, and then the lifting cylinder 62 applies force to the contour push plate 61. While the contour push plate 61 moves upward, it applies force to the deformation support body formed by the plurality of support beads 5. The deformation support body moves toward one side of the engine cylinder head and lifts the engine cylinder head until the end face of the engine cylinder head abuts against the limit horizontal plane formed by the sliding pressure rod 72. At this time, the engine cylinder head is completely fixed, and then the milling process of the end face of the engine cylinder head can be started. Since the lower end extrusion is carried out with the help of the guard rod 3 and the support bead 5, it is possible to adapt to engine cylinder heads of different models; the base box 2 can be fixed by the support frame 1, and the base box 2 can be used to guide the guard rod 3. The basic support of the engine cylinder head can be achieved through multiple guard rods 3, and a receiving cavity for accommodating the support bead 5 can be formed. The lower end of the engine cylinder head can be extruded by the support bead 5 in cooperation with the extrusion unit 6, and adaptation to engine cylinder heads of different models can be achieved. The height limit of the end face of the engine cylinder head can be achieved through the end face limit unit 7, and then the processing and clamping operations of engine cylinder heads of different models can be achieved in cooperation with the lower end extrusion.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An engine cylinder head processing mechanism, characterized in that: include: A support frame (1), the support frame (1) being connected to a base box (2), and the top wall of the base box (2) being provided with an opening; A plurality of enclosure rods (3), the enclosure rods (3) being slidably connected to the base box (2), and the sliding direction of the enclosure rods (3) being arranged vertically, the plurality of enclosure rods (3) enclosing at least one accommodating cavity, and an abutment spring (4) being connected between the enclosure rods (3) and the support frame (1); A plurality of supporting beads (5), wherein the supporting beads (5) are located in the accommodating cavity, and the diameter of the supporting beads (5) is larger than the gap between two adjacent enclosure rods (3), and the plurality of supporting beads (5) form at least one deformable supporting body; A plurality of extrusion units (6) for pushing the support beads (5) to abut against the bottom wall of the engine cylinder head, wherein the extrusion units (6) are connected to the base box (2), and the extrusion units (6) are connected to the support beads (5); A plurality of end surface limiting units (7), wherein the end surface limiting units (7) are connected to the support frame (1), and the end surface limiting units (7) are used to abut against the end surface of the engine cylinder head.

2. The engine cylinder head processing mechanism according to claim 1, characterized in that: The extrusion unit (6) comprises A contoured push plate (61), the contoured push plate (61) being located in the accommodating cavity, and a sliding gap between the contoured push plate (61) and the enclosure rod (3) being smaller than a diameter of the support bead (5); A lifting cylinder (62) is connected to the support frame (1), and a piston rod of the lifting cylinder (62) passes through the base box (2) and is connected to the contoured push plate (61), and the piston rod of the lifting cylinder (62) is staggered with the base box (2).

3. The engine cylinder head processing mechanism according to claim 2, characterized in that: The contoured push plate (61) is connected to a plurality of reinforcing ribs (63), which are distributed around the circumference of the piston rod of the lifting cylinder (62), and one end of the reinforcing rib (63) is in contact with the piston rod of the lifting cylinder (62).

4. The engine cylinder head processing mechanism according to claim 1, characterized in that: The end surface limiting unit (7) comprises A fixing column (71), the fixing column (71) is connected to the support frame (1), and the fixing column (71) is vertically arranged; A sliding pressure rod (72), wherein the sliding pressure rod (72) is slidably connected to the fixed column (71), and a rotation gap is left between the sliding pressure rod (72) and the fixed column (71); A lifting mechanism (73) is used for driving the sliding pressure rod (72) to lift and lower, wherein the lifting mechanism (73) is connected to the support frame (1), and the lifting mechanism (73) is connected to the sliding pressure rod (72).

5. The engine cylinder head processing mechanism according to claim 4, characterized in that: The sliding pressure rod (72) is provided with a plurality of test holes (721), the plurality of test holes (721) are distributed along the radial direction of the fixed column (71), and the sliding pressure rod (72) is connected with a pressure supply pump (75), an air channel is formed in the sliding pressure rod (72), the pressure supply pump (75) is connected with the inner cavity of the test hole (721) through the air channel, and an air pressure sensor is connected in the inner cavity of the test hole (721).

6. The engine cylinder head processing mechanism according to claim 4, characterized in that: A supporting oblique rod (74) is slidably connected to the fixed column (71), and a rotation gap is left between the supporting oblique rod (74) and the fixed column (71). One end of the supporting oblique rod (74) away from the fixed column (71) is connected to the sliding pressure rod (72).

7. The engine cylinder head processing mechanism according to claim 6, characterized in that: The lifting mechanism (73) comprises A lifting cylinder (731), the lifting cylinder (731) is connected to the support frame (1), and the piston rod of the lifting cylinder (731) is arranged in the vertical direction; A driving block (732) is connected to the piston rod of the lifting cylinder (731), and a sliding slot is formed on the driving block (732) for the sliding pressure rod (72) and the supporting inclined rod (74) to extend into, and the driving block (732) slides relative to the sliding pressure rod (72) and the supporting inclined rod (74).

8. The engine cylinder head processing mechanism according to claim 1, characterized in that: The accommodating cavity surrounded by the plurality of the enclosure rods (3) is a columnar cavity, and a plurality of reinforcing rings (8) are provided outside the accommodating cavity, the reinforcing rings (8) are in sliding contact with the enclosure rods (3), and a spacing spring (9) is connected between two adjacent reinforcement rings (8), and the spacing spring (9) is sleeved outside the accommodating cavity.

9. The engine cylinder head processing mechanism according to claim 8, characterized in that: The outer wall of the enclosure rod (3) is arranged in an arc shape and is adapted to the shape of the inner circumference of the reinforcement ring (8).

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