Cylinder head drilling and tapping machine

Abstract

The utility model belongs to the technical field of machining equipment, and particularly relates to a cylinder head drilling and tapping machine which comprises a machining platform, and a machining mechanism and a positioning mechanism used for fixing a cylinder head to be machined are arranged on the machining platform. The machining mechanism comprises a cutter mounting seat, a lifting assembly for adjusting the height of the cutter mounting seat, a cutter feeding and retracting assembly for controlling the cutter mounting seat to feed and retract, and a power assembly for driving the cutter mounting seat to rotate; the cutter feeding and retracting assembly is further provided with a buffering assembly for buffering cutter feeding of the cutter mounting base. The middle bent part of the steering handle is supported and positioned through the bent part supporting assembly, one end of the steering handle is positioned through the end positioning assembly of the end supporting assembly, and then the steering handle in the drilling sleeve is directly drilled through the through hole of the drilling equipment, so that the operation is very simple, convenient and rapid; and the machining efficiency is effectively improved, meanwhile, the machining precision is guaranteed, and the safety coefficient of workers during working is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to a cylinder head drilling and tapping machine. Background Art

[0002] Nowadays, more and more people like to use motorcycles as a means of transportation, and the scale of motorcycle production is also expanding. The engine is the main component of a motorcycle and directly affects the various performances of the motorcycle. The cylinder head is an important component of the engine, so the quality of the cylinder head directly affects the quality of the motorcycle.

[0003] When the cylinder head is in use, it needs to be connected to the cylinder body. In addition, when the engine is installed, threaded holes are also required for installation. Therefore, threaded holes are opened on multiple sides of the cylinder head. Therefore, when processing the cylinder head, holes need to be opened at the corresponding positions of the cylinder head. Most of the hole opening equipment for the cylinder head uses a drilling machine to drill holes first, and then replaces the tapping machine to process threads in the holes. The work efficiency is very low, and because there are many threaded holes on each cylinder head, the workload of the workers is large. In addition, due to the complex structure of the cylinder head, the positioning of the cylinder head directly affects the quality of drilling and tapping, and thus affects the product quality.

[0004] In view of the above problems, the utility model document proposes a cylinder head drilling and tapping machine. Utility Model Content

[0005] The utility model provides a cylinder head drilling and tapping machine, which can automatically drill and tap the cylinder head, thereby improving the cylinder head processing efficiency, ensuring product quality and reducing the production cost of the enterprise.

[0006] The utility model provides the following technical solutions:

[0007] A cylinder head drilling and tapping machine comprises a processing platform, on which a processing mechanism and a positioning mechanism for fixing a cylinder head to be processed are arranged;

[0008] The processing mechanism includes a tool mounting seat, a lifting assembly for adjusting the height of the tool mounting seat, a tool advance and retreat assembly for controlling the advance and retreat of the tool mounting seat, and a power assembly for driving the tool mounting seat to rotate;

[0009] The tool advance and retract assembly is also provided with a buffer assembly for buffering the tool advance of the tool mounting seat.

[0010] Furthermore, the lifting assembly includes a lifting cylinder, a positioning sleeve is arranged on the output shaft of the lifting cylinder, and a mounting frame is arranged on the side of the positioning sleeve away from the processing platform.

[0011] Furthermore, the knife advance and retract assembly is arranged in the positioning sleeve, including an knife advance and retract cylinder, the knife advance and retract cylinder is fixedly arranged on the inner wall of the positioning sleeve, a first connecting plate is arranged on the output shaft of the knife advance and retract cylinder, a first bearing is arranged on the first connecting plate, a processing shaft is rotatably arranged in the first bearing, the processing shaft is slidably arranged in the positioning sleeve along the length direction of the positioning sleeve, and a tool mounting seat is arranged at one end of the processing shaft close to the processing platform.

[0012] Furthermore, the power assembly includes a first motor, an output shaft of the first motor is connected to the other end of the processing shaft by power transmission, and the first motor is slidably arranged on the mounting frame, and the sliding direction is the same as the moving direction of the processing shaft.

[0013] Furthermore, a buffer assembly is arranged at one end of the processing shaft away from the processing platform, and the buffer assembly includes a buffer cylinder and a top plate. A second connecting plate with a second bearing is rotatably arranged on the processing shaft, and the second connecting plate is connected to the processing shaft through the second bearing. The buffer cylinder is arranged on the second connecting plate, and the top plate is fixedly arranged on the mounting frame, and its position matches that of the buffer cylinder, and the top plate is located between the buffer cylinder and the positioning sleeve.

[0014] Furthermore, a third connecting plate is provided on the side of the first motor, a third bearing is clamped on the third connecting plate, and the processing shaft is rotatably arranged in the third bearing.

[0015] Furthermore, the mounting frame is provided with a guide rail, the guide rail is parallel to the processing axis, the second connecting plate is provided with a guide hole, and the guide rail is arranged in the guide hole.

[0016] Furthermore, a driven wheel is fixedly arranged at one end of the processing shaft, a driving wheel is fixedly arranged on the output shaft of the first motor, the driving wheel and the driven wheel are connected by a belt, and a tool mounting seat is fixedly arranged at the other end of the processing shaft.

[0017] Furthermore, six groups of processing mechanisms are arranged on the processing platform, of which three groups of processing mechanisms have drilling bits installed on their tool mounting seats, and the other three groups of processing mechanisms have tapping bits installed on their tool mounting seats, and the positions of the drilling bits and tapping bits match the positions of the holes to be processed in the cylinder head.

[0018] Furthermore, the positioning mechanism includes a base, which is fixedly arranged on the processing platform, and a screw rod and a sliding rod are arranged inside the base, a second motor is arranged at one end of the screw rod, a positioning seat is slidably arranged on the base, a sliding block is arranged at the bottom of the positioning seat, and the sliding block is slidably arranged on the screw rod and the sliding rod, the positioning seat is provided with a limit plate and a limit cylinder matching the limit plate, and a pressure plate is arranged on the output shaft of the limit cylinder; the positioning seat is also provided with a positioning column corresponding to the hole on the cylinder head to be processed.

[0019] In the utility model, the middle bending part of the direction handle is supported and positioned by the bending support assembly, one end of the direction handle is positioned by the end positioning assembly of the end support assembly, and then the direction handle in the drilling sleeve can be drilled directly by the through hole of the drilling equipment. The operation is very simple and quick, which effectively improves the processing efficiency, ensures the processing accuracy, and improves the safety factor of workers at work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional structural schematic diagram of a cylinder head drilling and tapping machine provided by an embodiment of the utility model;

[0021] Figure 2 A schematic cross-sectional structure diagram of a processing mechanism in a cylinder head drilling and tapping machine provided by an embodiment of the utility model;

[0022] Figure 3 The present invention is a schematic structural diagram of a base in a cylinder head drilling and tapping machine provided by an embodiment of the utility model.

[0023] Reference numerals:

[0024] 1. Processing platform; 2. Processing mechanism; 201. Tool mounting seat; 202. Lifting cylinder; 203. Positioning sleeve; 204. Processing axis; 205. Tool advance and retract cylinder; 206. First connecting plate; 207. First bearing; 208. First motor; 209. Mounting frame; 210. Buffer cylinder; 211. Top plate; 212. Second connecting plate; 213. Second bearing; 214. Guide rail; 215. Third connecting plate; 216. Third bearing; 3. Positioning mechanism; 301. Base; 302. Positioning seat; 303. Sliding rod; 304. Screw rod; 305. Positioning seat; 306. Second motor; 307. Positioning column; 308. Limiting cylinder; 309. Limiting plate; 310. Pressing plate. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0027] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0030] Example:

[0031] Reference Figure 1 , Figure 2 and Figure 3 As shown, a cylinder head drilling and tapping machine comprises a processing platform 1, on which a processing mechanism 2 and a positioning mechanism 3 for fixing the cylinder head to be processed are arranged;

[0032] The processing mechanism 2 includes a tool mounting seat 201, a lifting assembly for adjusting the height of the tool mounting seat 201, a tool advance and retreat assembly for controlling the advance and retreat of the tool mounting seat 201, and a power assembly for driving the tool mounting seat 201 to rotate;

[0033] The tool advance and retract assembly is also provided with a buffer assembly for buffering the tool advance of the tool mounting seat 201 .

[0034] The cylinder head to be processed is fixed by the positioning mechanism 3, the drilling bit or the tapping bit is installed by the tool mounting seat 201, the height of the tool mounting seat 201 is adjusted by the lifting component, and then the tool mounting seat 201 is controlled to advance in the direction of the cylinder head to be processed by the advance and retract tool component, and the drilling bit or the tapping bit on the tool mounting seat 201 is driven to rotate by the power component, so that the cylinder head can be processed accordingly. During the whole operation process, the workers only need to place the cylinder head to be processed on the positioning mechanism 3, which reduces the workload of the workers, improves the work efficiency, and ensures the processing quality of the cylinder head.

[0035] Furthermore, the lifting assembly includes a lifting cylinder 202 , a positioning sleeve 203 is provided on the output shaft of the lifting cylinder 202 , and a mounting frame 209 is provided on a side of the positioning sleeve 203 away from the processing platform 1 .

[0036] A positioning sleeve 203 is arranged on the output shaft of the lifting cylinder 202 , and the positioning sleeve 203 is driven by the cylinder to move up and down, thereby driving the mounting frame 209 on the positioning sleeve 203 to move up and down.

[0037] Furthermore, the knife advance and retract assembly is arranged in the positioning sleeve 203, including a knife advance and retract cylinder 205, which is fixedly arranged on the inner wall of the positioning sleeve 203, and a first connecting plate 206 is arranged on the output shaft of the knife advance and retract cylinder 205, and a first bearing 207 is arranged on the first connecting plate 206. A processing shaft 204 is rotatably arranged in the first bearing 207, and the processing shaft 204 is slidably arranged in the positioning sleeve 203 along the length direction of the positioning sleeve 203. A tool mounting seat 201 is arranged at one end of the processing shaft 204 close to the processing platform 1.

[0038] The first connecting plate 206 is driven to move by the advance and retract cylinder 205, and the movement of the first connecting plate 206 drives the machining shaft 204 to move. The machining shaft 204 is located in the first bearing 207, so that the machining shaft 204 can rotate while moving, and the tool mounting seat 201 at the end of the machining shaft 204 moves to achieve advance or retract.

[0039] Furthermore, the power assembly includes a first motor 208 , the output shaft of the first motor 208 is connected to the other end of the processing shaft 204 by power transmission, and the first motor 208 is slidably arranged on the mounting frame 209 , and the sliding direction is the same as the moving direction of the processing shaft 204 .

[0040] The machining shaft 204 is driven to rotate by the first motor 208 , thereby driving a drilling drill bit or a tapping drill bit installed on a tool mounting seat 201 at the end of the machining shaft 204 to rotate.

[0041] Furthermore, a buffer assembly is arranged at one end of the processing shaft 204 away from the processing platform 1, and the buffer assembly includes a buffer cylinder 210 and a top plate 211. A second connecting plate 212 with a second bearing 213 is rotatably arranged on the processing shaft 204. The second connecting plate 212 is connected to the processing shaft 204 through the second bearing 213. The buffer cylinder 210 is arranged on the second connecting plate 212. The top plate 211 is fixedly arranged on the mounting frame 209, and its position matches that of the buffer cylinder 210. The top plate 211 is located between the buffer cylinder 210 and the positioning sleeve 203.

[0042] When feeding, the first connecting plate 206 is driven to move toward the processing platform 1 by the advance and retract cylinder 205, and the processing axis 204 is driven to move toward the processing platform 1, and then the buffer cylinder 210 is driven to move together. The cylinder axis of the buffer cylinder 210 abuts against the top plate 211 on the mounting frame 209. The buffer cylinder 210 buffers the movement of the processing axis 204, so that the movement speed of the processing axis 204 is reduced, thereby ensuring that the drilling bit or tapping bit on the tool mounting seat 201 slowly processes the processing cylinder head, ensuring processing safety and processing quality, and avoiding damage to the drilling bit or tapping bit.

[0043] Furthermore, a third connecting plate 215 is provided on the side of the first motor 208 , a third bearing 216 is clamped on the third connecting plate 215 , and the processing shaft 204 is rotatably disposed in the third bearing 216 .

[0044] The first motor 208 is slidably connected to the mounting frame 209, and the first motor 208 is connected to the processing shaft 204 through the third connecting plate 215, so that the processing shaft 204 can drive the first motor 208 to move when moving, thereby ensuring the stability of the power transmission structure between the first motor 208 and the processing shaft 204, and further ensuring that the processing shaft 204 can rotate while moving.

[0045] Furthermore, a guide rail 214 is provided on the mounting frame 209 , and the guide rail 214 is parallel to the processing axis 204 . A guide hole is provided on the second connecting plate 212 , and the guide rail 214 is arranged in the guide hole.

[0046] By cooperating the guide rail 214 with the guide hole on the second connecting plate 212, the second connecting plate 212 slides along the guide rail 214, ensuring that the buffer cylinder 210 does not rotate with the processing axis 204 during movement, and at the same time ensuring that the buffer cylinder 210 can cooperate with the top plate 211 during movement to ensure normal use of the buffer assembly.

[0047] Furthermore, a driven wheel is fixedly arranged at one end of the processing shaft 204 , a driving wheel is fixedly arranged on the output shaft of the first motor 208 , the driving wheel and the driven wheel are connected by a belt, and a tool mounting seat 201 is fixedly arranged at the other end of the processing shaft 204 .

[0048] The processing shaft 204 and the first motor 208 are connected via a belt drive, which can not only enable the first motor 208 to drive the processing shaft 204 to rotate at high speed, but also ensure the stability of the transmission structure during the movement of the first motor 208 and the processing shaft 204.

[0049] Furthermore, 6 groups of processing mechanisms 2 are arranged on the processing platform 1, among which 3 groups of processing mechanisms 2 have drilling bits installed on their tool mounting seats 201, and the other 3 groups of processing mechanisms 2 have tapping bits installed on their tool mounting seats 201, and the positions of the drilling bits and tapping bits match the positions of the holes to be processed in the cylinder head.

[0050] Since a drilling drill bit is installed on the tool mounting seat 201 of the three processing mechanisms 2, drilling processing can be performed on the three sides of the cylinder head at the same time, and a tapping drill bit is installed on the tool mounting seat 201 of the three processing mechanisms 2, holes on the three sides of the cylinder head can be tapped at the same time, which greatly improves work efficiency.

[0051] Furthermore, the positioning mechanism 3 includes a base 301, which is fixedly arranged on the processing platform 1, and a screw rod 304 and a sliding rod 303 are arranged in the base 301, and a second motor 306 is arranged at one end of the screw rod 304. A positioning seat 305302 is slidably arranged on the base 301, and a slider is arranged at the bottom of the positioning seat 305302. The slider is slidably arranged on the screw rod 304 and the sliding rod 303. The positioning seat 305302 is provided with a limit plate 309 and a limit cylinder 308 matched with the limit plate 309, and a pressure plate 310 is arranged on the output shaft of the limit cylinder 308; the positioning seat 305302 is also provided with a positioning column 307 corresponding to the hole on the cylinder head to be processed.

[0052] The positioning column 307 is used to position one side of the cylinder head to ensure that the cylinder head can be accurately installed in the processing position, thereby ensuring product quality and reducing the efficiency of workers clamping the cylinder head. The positioning column 307 only needs to be aligned with the hole position on the side of the cylinder head to be processed to complete the positioning of the cylinder head to be processed. Then, the limit cylinder 308 drives the pressure plate 310 to press the cylinder head to be processed onto the limit plate 309 to complete the clamping and fixing of the cylinder head to be processed. During processing, drilling is performed first. After the drilling is completed, the second motor 306 drives the screw rod 304 to rotate, thereby driving the slider to move, so that the positioning seat 305302 moves on the base 301, thereby driving the cylinder head to be processed to move, and moving the drilled cylinder head to the tapping processing position, and then tapping is performed.

[0053] During use, there are 6 groups of processing mechanisms 2, 3 of which have drilling bits installed on their tool mounting seats 201, corresponding to the 3 processing surfaces of the cylinder head to be processed, and the other 3 groups of processing mechanisms 2 have tapping bits installed on their tool mounting seats 201. The position of the processing mechanism 2 corresponding to the tapping bit corresponds to the position of the processing mechanism 2 corresponding to the drilling bit, so that the tapping bit can tap the holes drilled by the drilling bit.

[0054] First, according to the height of the cylinder to be processed, the height of the positioning sleeve 203 is adjusted by lifting the first motor 208, so that the tool mounting seat 201 can reach the processing position of the cylinder head to be processed when feeding, and a drilling drill bit is installed on the tool mounting seat 201 corresponding to the three processing surfaces of the cylinder head, and a tapping drill bit is installed on the other three tool mounting seats 201.

[0055] The cylinder head to be processed is placed on the positioning seat 305302, so that the positioning column 307 corresponds to the hole position on the cylinder head to be processed, thereby completing the positioning of the cylinder head to be processed, and then starting the limiting cylinder 308, so that the pressure plate 310 on the limiting cylinder 308 presses the cylinder head to be processed on the limiting plate 309, and the fixing of the cylinder head to be processed is completed, and then the second motor 306 is rotated to drive the positioning seat 305302 to move, so that the cylinder head to be processed moves to the drilling position, and the output shaft of the advance and retract cylinder 205 is started to extend, so that the advance and retract cylinder 205 drives the first connecting plate 206 to move, and then drives the processing shaft 204 to move, so that the drilling drill bit moves to the processing position of the cylinder head to be processed, and at the same time, the first motor 208 is started to drive the processing shaft 204 to rotate, and the rotation of the processing shaft 204 drives the drilling drill bit to rotate, so that the drilling drill bit It rotates during the movement to drill the cylinder head to be processed. At the same time, the processing shaft 204 drives the buffer cylinder 210 to move during the movement, so that the cylinder shaft of the buffer cylinder 210 rests on the top plate 211, and then the buffer cylinder 210 recoils the movement of the processing shaft 204, reducing the movement speed of the processing shaft 204, ensuring the drilling quality, and protecting the drilling bit; when the drilling is completed, the output shaft of the feed and retract cylinder 205 is started to contract, driving the processing shaft 204 to move away from the cylinder head; when the drilling bit is separated from the cylinder head, the second motor 306 is started, so that the second motor 306 drives the positioning seat 305302 to move, and then the cylinder head with the completed drilling is moved to the tapping position, and then the feed and retract cylinder 205 and the first motor 208 at the tapping position are started in the same way to tap the inside of the hole processed on the surface of the cylinder head.

[0056] During the entire operation, the worker only needs to position the cylinder head to be processed on the positioning seat 305302, and then control the lifting cylinder 202, the limit cylinder 308, the advance and retreat cylinder 205, the first motor 208, and the second motor 306, which greatly reduces the workload and improves the work efficiency. In actual use, the controller can be used to uniformly control the lifting cylinder 202, the limit cylinder 308, the advance and retreat cylinder 205, the first motor 208, and the second motor 306, further reducing the labor intensity of the workers.

[0057] In addition, the tool mounting seat 201 adopts a multi-axis device and is equipped with four drilling bits or tapping bits at the same time, so that the holes on one side of the cylinder head can be processed at the same time, thereby improving the processing efficiency.

[0058] A guide sleeve is provided on the side of the positioning sleeve 203 adjacent to the tool mounting seat 201 to ensure the rotation stability of the processing axis 204 and improve the processing accuracy.

[0059] A coolant nozzle is set at the processing position, and coolant is sprayed on the processing surface of the cylinder head through the coolant nozzle to reduce the temperature of the processing position, ensure that the processing will not cause damage to the cylinder head, and ensure product quality.

[0060] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A cylinder head drilling and tapping machine, characterized in that: It comprises a processing platform, on which a processing mechanism and a positioning mechanism for fixing a cylinder head to be processed are arranged; The processing mechanism includes a tool mounting seat, a lifting assembly for adjusting the height of the tool mounting seat, a tool advance and retreat assembly for controlling the advance and retreat of the tool mounting seat, and a power assembly for driving the tool mounting seat to rotate; The tool advance and retract assembly is also provided with a buffer assembly for buffering the tool advance of the tool mounting seat.

2. A cylinder head drilling and tapping machine according to claim 1, characterized in that: The lifting assembly comprises a lifting cylinder, a positioning sleeve is arranged on the output shaft of the lifting cylinder, and a mounting frame is arranged on the side of the positioning sleeve away from the processing platform.

3. A cylinder head drilling and tapping machine according to claim 2, characterized in that: The knife advance and retract assembly is arranged in the positioning sleeve, including an knife advance and retract cylinder, which is fixedly arranged on the inner wall of the positioning sleeve. A first connecting plate is arranged on the output shaft of the knife advance and retract cylinder, and a first bearing is arranged on the first connecting plate. A processing shaft is rotatably arranged in the first bearing, and the processing shaft is slidably arranged in the positioning sleeve along the length direction of the positioning sleeve. A tool mounting seat is arranged at one end of the processing shaft close to the processing platform.

4. A cylinder head drilling and tapping machine according to claim 3, characterized in that: The power assembly includes a first motor, an output shaft of the first motor is connected to the other end of the processing shaft by power transmission, and the first motor is slidably arranged on the mounting frame, and the sliding direction is the same as the moving direction of the processing shaft.

5. A cylinder head drilling and tapping machine according to claim 4, characterized in that: A buffer assembly is arranged at one end of the processing shaft away from the processing platform, and the buffer assembly includes a buffer cylinder and a top plate. A second connecting plate with a second bearing is rotatably arranged on the processing shaft, and the second connecting plate is connected to the processing shaft through the second bearing. A buffer cylinder is arranged on the second connecting plate, and the top plate is fixedly arranged on the mounting frame, and its position matches that of the buffer cylinder, and the top plate is located between the buffer cylinder and the positioning sleeve.

6. A cylinder head drilling and tapping machine according to claim 5, characterized in that: A third connecting plate is provided on the side of the first motor, a third bearing is clamped on the third connecting plate, and the processing shaft is rotatably disposed in the third bearing.

7. A cylinder head drilling and tapping machine according to claim 6, characterized in that: The mounting frame is provided with a guide rail, the guide rail is parallel to the processing axis, the second connecting plate is provided with a guide hole, the guide rail is arranged in the guide hole.

8. The cylinder head drilling and tapping machine according to claim 7, characterized in that: A driven wheel is fixedly arranged at one end of the processing shaft, a driving wheel is fixedly arranged on the output shaft of the first motor, the driving wheel and the driven wheel are connected by a belt, and a tool mounting seat is fixedly arranged at the other end of the processing shaft.

9. The cylinder head drilling and tapping machine according to claim 8, characterized in that: Six groups of processing mechanisms are arranged on the processing platform, wherein three groups of processing mechanisms have drilling bits installed on their tool mounting seats, and the other three groups of processing mechanisms have tapping bits installed on their tool mounting seats, and the positions of the drilling bits and tapping bits match the positions of the holes to be processed in the cylinder head.

10. The cylinder head drilling and tapping machine according to claim 9, characterized in that: The positioning mechanism includes a base, which is fixedly arranged on the processing platform, a screw rod and a sliding rod are arranged in the base, a second motor is arranged at one end of the screw rod, a positioning seat is slidably arranged on the base, a sliding block is arranged at the bottom of the positioning seat, and the sliding block is slidably arranged on the screw rod and the sliding rod, a limiting plate and a limiting cylinder matching the limiting plate are arranged on the positioning seat, and a pressure plate is arranged on the output shaft of the limiting cylinder; the positioning seat is also provided with a positioning column corresponding to the hole on the cylinder head to be processed.

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