Actuator and method of manufacturing an actuator

Abstract

The present application relates to the field of pneumatics, in particular to an actuator with higher stability and manufacturing method, the exhaust cavity is connected with the exhaust port and the external space of the cylinder body, the gas discharged through the exhaust port enters the exhaust cavity, compared with the background technology, the object outside the actuator directly enters the exhaust port, avoids the blockage of the exhaust port, and the stability of the actuator is improved; the cylinder body profile is prepared, including drawing blank, that is, the process of preparing the cylinder body includes drawing process, the first hole and the second hole for forming the piston cavity and the exhaust cavity can be formed at one time, compared with other processing methods, the efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of pneumatics, and in particular to an actuator and a method for manufacturing the actuator. Background Technology

[0002] See Figure 8 An actuator includes a cylinder and a single-piece valve. The cylinder includes a piston assembly 001' and a piston chamber 002'. At least a portion of the piston assembly 001' is located in the piston chamber 002'. The single-piece valve 007' has a working port 004' and an outlet port 005'. The working port 004' is connected to the piston chamber 002', and the working port 004' and the outlet port 005' are respectively connected to the valve chamber 008' of the single-piece valve 007'. The single-piece valve 007' has a valve stem 003' located in the valve chamber 008'. The valve stem 003' is used to switch the air path and control the movement of the piston assembly. In this technology, the outlet port 005' may become blocked, affecting the stability of the actuator. Summary of the Invention

[0003] This invention provides an actuator and its manufacturing method that solve the above-mentioned operational stability problem: The device includes a control valve and a cylinder, which are fixedly mounted. The control valve has a working port and an exhaust port. The cylinder includes a cylinder body with a piston chamber and an exhaust chamber. The control valve includes a valve chamber. The working port and the piston chamber are connected. Gas enters the valve chamber from the piston chamber through the working port and exits the control valve from the valve chamber through the exhaust port. The cylinder body includes a connecting channel that connects the exhaust port and the exhaust chamber. The exhaust chamber connects the exhaust port and the external space of the cylinder body. Gas discharged through the exhaust port enters the exhaust chamber, preventing external objects from directly entering the exhaust port and causing blockage.

[0004] This type of actuator connects the exhaust port and the external space of the cylinder through the exhaust chamber. That is, the gas discharged through the exhaust port enters the exhaust chamber. Compared with the prior art, this avoids external objects from directly entering the exhaust port and causing blockage, thus improving the stability of the actuator.

[0005] A manufacturing method for manufacturing the aforementioned actuator, characterized in that it includes: Provide raw materials; The preparation of cylinder block profiles includes drawing blanks. The cylinder block profiles have a first hole and a second hole. The walls of the first hole and the second hole extend along the drawing direction. The first hole and the second hole are used to form a piston chamber and an exhaust chamber, respectively. The cylinder block is manufactured, including machining the cylinder block profile, and the cylinder block has an exhaust chamber; Provides control valves, front cover, rear cover and piston assembly, assembles control valves, front cover, rear cover, piston assembly and cylinder, and connects the exhaust port and exhaust chamber of the control valve.

[0006] This method of manufacturing actuators, by connecting the exhaust port and exhaust chamber of the control valve, allows the gas discharged through the exhaust port to enter the exhaust chamber. Compared with the prior art, this avoids external objects from directly entering the exhaust port and causing blockage, thus improving the stability of the actuator. The preparation of the cylinder profile, including the drawing of the blank, means that the process of preparing the cylinder includes a drawing process, which can form the first and second holes for forming the piston chamber and exhaust chamber in one step, which is more efficient than other processing methods. Attached Figure Description

[0007] Figure 1 This is a front view schematic diagram of an actuator according to one embodiment; Figure 2 for Figure 1 A side view of the actuator; Figure 3 for Figure 1 An explosion diagram of the central actuator; Figure 4 for Figure 1 A cross-sectional view of the position of the actuator UU; Figure 5 for Figure 1 A cross-sectional view of the WW position of the actuator; Figure 6 for Figure 2 A cross-sectional view of the QQ position of the central execution mechanism; Figure 7 A schematic diagram of the manufacturing method of the actuator; Figure 8 This is a cross-sectional schematic diagram of the actuator in the background technology.

[0008] Figure label: Control valve 1, working port 11, first working port 11a, second working port 11b, exhaust port 12, first exhaust port 12a, second exhaust port 12b, air inlet 13, valve body 14, valve stem 15, valve chamber 16. Cylinder 2, piston chamber 21, cylinder body 22, exhaust chamber 221, first exhaust chamber 221a, second exhaust chamber 221b, first port 2211, second port 2212, first part 2213, first end 222, second end 223, connecting channel 224, second channel 2241, extension hole section 2242, first connecting section 2243, second connecting section 2244, connecting section 2245, platform part 225, platform wall 2251, first side wall part 2252, outer wall of the first side wall part 22521, inner wall of the first side wall part 22522, second side wall part 2253, outer wall of the second side wall part 22531, inner wall of the second side wall part 22532, first step part 226, second step part 227, connecting channel 228, first channel 2281, third channel 2282, piston assembly 24, front cover 25, rear cover 26; Raw material 0022'; Cylinder block profile 0022, first hole 021', second hole 0221; Cylinder block blank 022, first hole section 021.

[0009] Piston assembly 001'; Piston chamber 002'; Single-piece valve 007'; Valve chamber 008'; Rod 003'; Working port 004'; Air outlet 005'; Transition plate 006'; Conductor channel 009' Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of specific embodiments are described below with reference to the accompanying drawings: In this invention, see Figures 1 to 6 An actuator includes a cylinder 2 and a control valve 1. The cylinder 2 includes a cylinder body 22, a piston assembly 24, and a piston chamber 21. At least a portion of the piston assembly 24 is located in the piston chamber 21, and the piston assembly 24 is capable of slidingly engaging with the inner wall of the piston chamber 21. The control valve 1 includes a working port 11, an exhaust port 12, and an inlet port 13. The working port 11 is connected to the piston chamber 21, and the exhaust port 12 is connected to the outside of the control valve 1. The control valve 1 includes a valve body 14 and a valve stem 15. 11 and 12 are located in the valve body 14. The control valve 1 includes a valve chamber 16. The valve stem 15 moves in the valve chamber 16. Gas enters the valve chamber 16 through the inlet 13, enters the piston chamber 21 through the working port 11, enters the valve chamber 16 through the working port 11, and exits the control valve 1 through the exhaust port 12. The movement of the valve stem 15 controls the switching of the air path, thereby realizing the movement of the piston assembly 24. The working principle is described in detail below using a two-position five-way valve and cylinder 2 as an example.

[0011] Control valve 1 includes two working ports 11 and two exhaust ports 12, namely a first working port 11a and a second working port 11b, a first exhaust port 12a and a second exhaust port 12b. The first working port 11a connects the valve chamber 16 and the piston chamber 21, and the second working port 11b connects the valve chamber 16 and the piston chamber 21. When the valve stem 15 is in the first position, the air inlet 13 and the first working port 11a are connected, the air inlet 13 and the second working port 11b are disconnected, the first working port 11a and the first exhaust port 12a are disconnected, and the second working port 11b and the second exhaust port 12b are connected. Gas enters the piston chamber 21 through the first working port 11a and acts on one side of the piston assembly 24. When component 24 moves in the positive direction of the first direction, the gas on the other side of piston chamber 21 is discharged from cylinder 2 through the second working port 11b and the second exhaust port 12b. When valve stem 15 is in the second position, inlet port 13 and second working port 11b are connected, inlet port 13 and first working port 11a are disconnected, first working port 11a and first exhaust port 12a are connected, second working port 11b and second exhaust port 12b are disconnected, and gas enters piston chamber 21 through second working port 11b, acting on one side of piston assembly 24. Piston assembly 24 moves in the opposite direction of the first direction, and the gas on the other side of piston chamber 21 is discharged from cylinder 2 through first working port 11a and first exhaust port 12a.

[0012] In a prior art, reference Figure 8 Gas is discharged directly to the outside of the actuator through the outlet 005'. When the outlet 005' suddenly stops venting, the pressure near the outlet 005' suddenly decreases, while the external pressure is higher, creating a pressure difference and causing gas backflow. This can easily draw in particles and dust from outside the actuator, leading to blockage of the outlet 005' and affecting the stability of the actuator.

[0013] In this invention, see Figures 1 to 6 The cylinder 2 includes a cylinder body 22, which has an exhaust chamber 221 and an exhaust port 12 connected to each other.

[0014] Such an actuator is connected through the exhaust chamber 221 and the exhaust port 12, that is, the gas discharged through the exhaust port 12 enters the exhaust chamber 221. Compared with the prior art, this avoids external objects from directly entering the exhaust port 12 and causing blockage, thus improving the stability of the actuator.

[0015] Specifically, the exhaust chamber 221 is connected to the outside of the actuator. Gas entering the exhaust chamber 221 through the exhaust port 12 is then discharged to the outside of the actuator through the exhaust chamber 221.

[0016] In one embodiment, the cylinder 2 includes a connecting channel 228 that connects the exhaust port 12 and the exhaust chamber 221. Specifically, the cylinder body 22 has a platform wall 2251, and the control valve 1 is disposed on the platform wall 2251. The control valve 1 and the cylinder body 22 are limited or fixedly disposed. One port of the connecting channel 228 is located on the platform wall 2251, and the other port of the connecting channel 228 is located on the cavity wall of the exhaust chamber 221. More specifically, a seal (not shown in the figure) is provided between the platform wall 2251 and the control valve 1. The seal can be a sealing ring. Gas discharged from the exhaust port 12 enters the connecting channel 228 through the port of the connecting channel 228 and enters the exhaust chamber 221 through the connecting channel 228, preventing gas leakage at the exhaust port 12.

[0017] Along the first direction, the wall of the exhaust chamber 221 extends along the first direction. The exhaust chamber 221 has a first port 2211 and a second port 2212, which are located at the first end 222 and the second end 223 of the cylinder body 22 along the first direction, respectively. More specifically, the exhaust chamber 221 is a through hole located in the valve body 14 along the first direction. The wall of the exhaust chamber 221 can be formed by drawing. More specifically, at least a portion of the wall of the piston chamber 21 extends along the first direction, that is, the exhaust chamber 221 and the portion for forming the piston chamber 21 can be formed simultaneously by drawing. In some prior art, the cylinder body 22 is formed by die casting. To meet surface accuracy requirements, machining is required again after die casting, which is a relatively complex process. In this embodiment, the machining process and steps are simpler.

[0018] It should be noted that "the portion that simultaneously forms the exhaust chamber 221 and the piston chamber 21" can be understood as follows: in this embodiment, after drawing and forming, the hole wall of the drawn hole can be machined. For example, the hole diameter can be enlarged at both ends along the first direction, and a first step portion 226 and a second step portion 227 can be formed on the inner wall of the hole. These can be used to limit the front cover 25 and the rear cover 26 of the cylinder 2, respectively. The piston chamber 21 can be formed in the portion of the wall corresponding to the hole that has not been machined again.

[0019] Specifically, the cylinder body 22 has a platform portion 225, defined as the arrangement direction of the cylinder 2 and the control valve 1, with the control valve 1 located at the top of the cylinder 2; the platform wall 2251 is the top wall of the platform portion 225. The cylinder body 22 has a first side wall portion 2252 and a second side wall portion 2253. Specifically, the platform portion 225 has a first side wall portion 2252 and a second side wall portion 2253. The outer walls 22521 and 22531 of the first and second side walls extend from the platform wall 2251 along the arrangement direction of the control portion and the cylinder 2. Specifically, the outer walls 22521 and 22531 of the first and second side walls extend from the platform wall 2251 in a direction opposite to the control valve 1, and the outer walls 22521 and 22531 of the first and second side walls are respectively located on both sides of the platform wall 2251. More specifically, the outer wall 22521 of the first side wall portion and the outer wall 22531 of the second side wall portion each have a first fixed position (not shown in the figure) and a second fixed position (not shown in the figure). Thus, during the manufacturing process of the actuator, the cylinder body 22 is limited. The first fixed position can be a first clamping position (not shown in the figure), and the second fixed position can be a second clamping position (not shown in the figure). That is, during the manufacturing process of the actuator, the cylinder body 22 can be clamped by a clamping mechanism (not shown in the figure) to limit the cylinder body 22.

[0020] The inner wall 22522 of the first sidewall or the inner wall 22532 of the second sidewall extends along the arrangement direction of the control valve 1 and the cylinder 2. Specifically, the inner wall 22522 of the first sidewall and / or the inner wall 22532 of the second sidewall extend in the direction away from the control valve 1, that is, the extension direction of the inner wall 22522 of the first sidewall and the outer wall 22521 of the first sidewall is consistent. More specifically, the inner wall 22522 of the first sidewall and the outer wall 22521 of the first sidewall extend in the direction away from the control valve 1. The extension direction of the inner wall 22532 of the second sidewall and the outer wall 22531 of the second sidewall is consistent. More specifically, the outer wall 22531 of the second sidewall and the inner wall 22532 of the second sidewall extend in the direction away from the control valve 1. The inner wall 22522 of the first sidewall and / or the inner wall 22532 of the second sidewall are part of the cavity wall of the exhaust chamber 221. The extension direction of the inner wall 22522 of the first sidewall and the outer wall 22521 of the first sidewall are consistent, and / or the extension direction of the inner wall 22532 of the second sidewall and the outer wall 22531 of the second sidewall are consistent. This can increase the space ratio of the exhaust chamber 221 in the cylinder block 22. Under the same volume, the space of the exhaust chamber 221 is larger, which facilitates exhaust.

[0021] In this embodiment, there can be two exhaust chambers 221, namely a first exhaust chamber 221a and a second exhaust chamber 221b. The inner wall 22522 of the first sidewall portion is part of the chamber wall of the first exhaust chamber 221a; the inner wall 22532 of the second sidewall portion is part of the chamber wall of the second exhaust chamber 221b. More specifically, the connecting channel 228 includes two first channels 2281 and two third channels 2282. In the two first channels 2281, one first channel 2281 connects the first exhaust port 12a and the first exhaust chamber 221a, and the other first channel 2281 connects the first exhaust port 12a and the second exhaust chamber 221b. In the two third channels 2282, one third channel 2282 connects the second exhaust port 12b and the first exhaust chamber 221a, and the other third channel 2282 connects the second exhaust port 12b and the second exhaust chamber 221b. The gas discharged through the first exhaust port 12a enters the first exhaust chamber 221a and the second exhaust chamber 221b through two first channels 2281, and is discharged to the outside of the actuator, thereby improving exhaust efficiency; the gas discharged through the second exhaust port 12b is discharged to the outside of the actuator through two third channels 2282, thereby improving exhaust efficiency.

[0022] The cylinder block 22 has a guiding channel 224, which includes a second channel 2241. The second channel 2241 connects the piston chamber 21 and the working port 11. The second channel 2241 includes a first connecting section 2243, a second connecting section 2244, and a connecting section 2245. The connecting section 2245 connects the first connecting section 2243 and the second connecting section 2244 and extends along a first direction. The cylinder block includes an extension hole section 2242, which extends and connects with the connecting section 2245. The exhaust chamber 2... The inner wall of 21 includes a first part 2213, the cavity wall of the connecting section 2245 and the first part 2213 have a wall thickness, and the cavity wall of the connecting section 2245 and the first part 2213 extend with the same wall thickness, and / or the cavity wall of the extension hole section 2242 and the first part 2213 have a wall thickness, and the cavity wall of the extension hole section 2242 and the first part 2213 extend with the same wall thickness. In this way, the space ratio of the exhaust chamber 221 in the cylinder block 22 can be increased. Under the same volume, the space of the exhaust chamber 221 is larger, which facilitates exhaust.

[0023] Specifically, the second channel 2241 connects one of the first working port 11a and the second working port 11b to the piston chamber 21. More specifically, the first end 222 is located in the negative direction of the first direction of the second end 223, and the first working port 11a is located in the negative direction of the first direction of the second working port 11b. The cylinder body 22 has a connecting channel 224, the channels of which respectively connect the first working port 11a and the piston chamber 21, and the second working port 11b and the piston chamber 21. More specifically, the inner wall of the first exhaust chamber 221a includes a first portion 2213, and the inner wall of the second exhaust chamber 221b includes the first portion 2213. The first connecting section 2243, the second connecting section 2244, and the connecting section 2245 connect the second working port 11b and the piston chamber 21.

[0024] A method for manufacturing an actuator, see [link to documentation]. Figures 1 to 7 7a is a schematic diagram of the blank; 7b is a front view schematic diagram of the cylinder block profile formed after drawing; 7c is a side view schematic diagram of the cylinder block profile formed after drawing; 7d is a front view schematic diagram of at least two cylinder block blanks formed after cutting; 7e is a side view schematic diagram of one cylinder block blank after cutting; 7f is a schematic diagram of the cylinder block blank machine; 7g is a schematic diagram of the cylinder block blank machine; 7h is a schematic diagram of the cylinder block blank machine.

[0025] A method for manufacturing an actuator, characterized by comprising: Provide raw materials; The preparation of a cylinder block profile includes drawing a blank, the cylinder block profile having a first hole and a second hole, the walls of the first hole and the walls of the second hole extending along the drawing direction; The cylinder block is manufactured, including machining the cylinder block profile, and the cylinder block has an exhaust chamber; Provide control valves, front cover, rear cover and piston assembly; assemble control valves, front cover, rear cover, piston assembly and cylinder block, with the exhaust port and exhaust chamber of the control valve connected.

[0026] This method of manufacturing actuators, by connecting the exhaust port and exhaust chamber of the control valve, allows the gas discharged through the exhaust port to enter the exhaust chamber. Compared with the prior art, this avoids external objects from directly entering the exhaust port and causing blockage, thus improving the stability of the actuator. The preparation of the cylinder profile, including the drawing of the blank, means that the process of preparing the cylinder includes a drawing process, which can form the first and second holes for forming the piston chamber and exhaust chamber in one step, which is more efficient than other processing methods.

[0027] Specifically, the machining steps for the cylinder block profile include: The cylinder block profile 0022 is cut to obtain at least two cylinder block blanks 022. Each cylinder block blank 022 includes a first hole segment 021 and an exhaust chamber 221. The first hole segment 021 is used to form the piston chamber 21. The lengths of the at least two cylinder block blanks 022 can be the same or different. Depending on the specific situation, the blanks can be cut to the corresponding lengths, resulting in higher adaptability. Furthermore, by cutting the cylinder block profile 0022 to obtain at least two cylinder block blanks 022, at least two cylinder block blanks 022 can be obtained at once, which is more efficient.

[0028] See Figure 7 In section 7f, the steps for preparing the cylinder block include: Along the drawing direction, the two ends of the hole wall of the first hole 021' are machined to enlarge the hole diameter at both ends, forming the first step portion 226 and the second step portion 227; the machining method can be drilling or milling, etc.

[0029] See Figure 7 The 7-hour process for preparing the cylinder block includes: A connecting channel 228 is machined into the cylinder block blank 022, and the connecting channel 228 is connected to the exhaust chamber 221; See Figure 7 The steps for preparing the cylinder body include: (7g of the sample) A through channel 224 is machined into the cylinder block blank 022, and the through channel 224 is connected to the hole in the first hole segment 021. The machining method can be drilling or milling.

[0030] Assemble the control valve and cylinder body so that the working port 11 of the control valve 1 and the conduction channel 224 are connected.

Claims

1. An actuator comprising a control valve (1) and a cylinder (2), characterized in that, The control valve (1) and the cylinder (2) are fixedly arranged. The control valve (1) has a working port (11) and an exhaust port (12). The cylinder (2) includes a cylinder body (22), which has a piston chamber (21) and an exhaust chamber (221). The control valve (1) includes a valve chamber (16). The working port (11) and the piston chamber (21) are connected. Gas enters the valve chamber (16) from the piston chamber (21) through the working port (11) and exits from the cylinder (221) through the exhaust port (12). The control valve (1) is discharged from the valve chamber (16). The cylinder body (22) includes a connecting channel (228). The connecting channel (228) connects the exhaust port (12) and the exhaust chamber (221). The exhaust chamber (221) connects the exhaust port (12) and the external space of the cylinder body (22). The gas discharged through the exhaust port (12) enters the exhaust chamber (221), preventing external objects of the actuator from directly entering the exhaust port (12) and causing blockage to the exhaust port (12).

2. The actuator according to claim 1, characterized in that, The cylinder (22) has a platform wall (2251), the control valve (1) is disposed on the platform wall (2251), one port of the connecting channel (228) is located on the platform wall (2251), and the other port of the connecting channel (228) is located on the cavity wall of the exhaust chamber (221).

3. The actuator according to claim 1, characterized in that, The cylinder (2) includes a piston assembly (24), and the direction of movement of the piston assembly (24) is defined as a first direction; the cylinder body (22) is an integral structure, the cylinder body (22) is prepared by a drawing process, the cavity wall of the exhaust chamber (221) extends along the first direction, the exhaust chamber (221) has a first port (2211), and the first port (2211) is located at the first end (222) of the cylinder body (22) along the first direction.

4. The actuator according to claim 1, characterized in that, The cylinder (2) includes a piston assembly (24), and the direction of movement of the piston assembly (24) is defined as a first direction; the cavity wall of the exhaust chamber (221) extends along the first direction, the cylinder body (22) has a first end (222) and a second end (223) along the first direction, the exhaust chamber (221) has a first port (2211) and a second port (2212) along the first direction, the first port (2211) is located at the first end (222), and the second port (2212) is located at the second end (223).

5. The actuator according to claim 2, characterized in that, The cylinder (2) includes a piston assembly (24), and the direction of movement of the piston assembly (24) is defined as a first direction; the platform wall (2251) extends along the first direction, and the cylinder body (22) has a first side wall portion (2252) and a second side wall portion (2253). The outer wall (22521) of the first side wall portion and the outer wall (22531) of the second side wall portion extend from the platform wall (2251) along the arrangement direction of the control valve (1) and the cylinder (2), and the outer wall (22521) of the first side wall portion and the outer wall (22531) of the second side wall portion are respectively located on both sides of the platform wall (2251).

6. The actuator according to claim 5, characterized in that, The inner wall (22522) of the first side wall portion and / or the inner wall (22532) of the second side wall portion extend along the arrangement direction of the control valve (1) and the cylinder (2), and the inner wall (22522) of the first side wall portion and / or the inner wall (22532) of the second side wall portion are part of the cavity wall of the exhaust chamber (221).

7. The actuator according to claim 4, characterized in that, The cylinder body (22) has a second channel (2241) that connects the piston chamber (21) and the working port (11). The second channel (2241) includes a first connecting section (2243), a second connecting section (2244), and a connecting section (2245). The connecting section (2245) connects the first connecting section (2243) and the second connecting section (2244). The connecting section (2245) extends along the first direction. The cylinder body includes an extension hole section (2242). (2242) and the connecting section (2245) extend to connect, the cavity wall of the exhaust cavity (221) includes a first part (2213); the cavity wall of the connecting section (2245) and the first part (2213) have a wall thickness, and the cavity wall of the connecting section (2245) and the first part (2213) extend with the same wall thickness, and / or the cavity wall of the extending hole section (2242) and the first part (2213) have a wall thickness, and the cavity wall of the extending hole section (2242) and the first part (2213) extend with the same wall thickness.

8. The actuator according to claim 5, characterized in that, The cylinder body (22) has a second channel (2241) that connects the piston chamber (21) and the working port (11). The second channel (2241) includes a first connecting section (2243), a second connecting section (2244), and a connecting section (2245). The connecting section (2245) connects the first connecting section (2243) and the second connecting section (2244). The connecting section (2245) extends along the first direction. The cylinder body includes an extension hole section (2242). (2242) and the connecting section (2245) extend to connect, the cavity wall of the exhaust cavity (221) includes a first part (2213); the cavity wall of the connecting section (2245) and the first part (2213) have a wall thickness, and the cavity wall of the connecting section (2245) and the first part (2213) extend with the same wall thickness, and / or the cavity wall of the extending hole section (2242) and the first part (2213) have a wall thickness, and the cavity wall of the extending hole section (2242) and the first part (2213) extend with the same wall thickness.

9. A method for manufacturing the actuator according to any one of claims 1 to 8, characterized in that, include: Provide raw blank (0022'); The preparation of cylinder block profile (0022) includes drawing the blank (0022'), the cylinder block profile (0022) having a first hole (021') and a second hole (0221), the walls of the first hole (021') and the second hole (0221) extending along the drawing direction, the first hole (021') and the second hole (0221) being used to form the piston chamber and the exhaust chamber, respectively; The preparation of the cylinder block (22) includes machining the cylinder block profile (0022), the cylinder block (22) having an exhaust chamber (221); Provide a control valve (1), a front cover (25), a rear cover (26), and a piston assembly (24), assemble the control valve (1), the front cover (25), the rear cover (26), the piston assembly (24), and the cylinder (22), and connect the exhaust port (12) of the control valve (1) and the exhaust chamber (221).

10. The method for manufacturing the actuator according to claim 9, characterized in that, The steps of preparing the cylinder block (22) include cutting the cylinder block profile (0022) to obtain at least two cylinder block blanks (022), each of the cylinder block blanks (022) including a first hole section (021) and an exhaust chamber (221).

11. The method for manufacturing the actuator according to claim 10, characterized in that, The steps for preparing the cylinder block (22) include: A connecting channel (228) is machined on the cylinder block blank (022), and the connecting channel (228) and the exhaust chamber (221) are connected; A connecting channel (224) is machined on the cylinder block blank (022), and the connecting channel (224) is connected to the hole of the first hole segment (021).

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