Motor-controlled power tool turret

Abstract

According to the motor-controlled power tool turret, the tool motor rotor, the tool motor stator, the control motor main shaft and the output main shaft are arranged, so that the mutual influence between tool changing and tool driving transmission can be reduced, and the reliability of tool turret power transmission is improved; the tool turret tool control precision and the tool motion response speed are improved, and the power tool turret motor control precision and the control effect are improved; by arranging a tool changing indexing stator, a tool changing indexing rotor, a tool changing rotating disc base, a tool rotating disc rotating disc, a tool changing fixing hydraulic cylinder and a hydraulic rod base, the transmission stability of the power tool turret and the expansion performance of a cooling system, a lubricating system and the like arranged on the power tool turret are improved; according to the power tool turret, the lubrication mounting cavity, the lubrication collecting spring and the infiltration block are arranged, normal lubrication can be restored under the contraction action of the lubrication collecting spring, the active lubrication effect of tool changing transmission is improved, the control precision of tool changing action is improved, and the service life of the power tool turret is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power turrets, in particular to a power turret controlled by a motor. Background Art

[0002] The power turret is a key equipment used in CNC machine tools. It plays an irreplaceable role in improving the processing capacity of machine tools. It directly provides power control to the tool and can effectively improve the processing accuracy of machine tools. The motor of the traditional power turret is placed outside the box, and the power is transmitted to the drive shaft through a synchronous belt. The end of the drive shaft is fixedly connected to the first gear, and the tool disc is fixedly connected to the second gear. The first gear and the second gear are meshed. After the transmission control is transmitted through the internal transmission system of the turret, the meshing transmission ratio is adjusted and transmitted to the power tool holder to control the tool movement. The direct control effect on the tool is poor. In addition, the power source of the tool change action of the tool disc of most power turrets relies on the clutch transmission to introduce the transmission control on the main power shaft of the tool. In this way, the overlap of the tool disc rotation and the power tool holder transmission system will impact each other under abnormal working conditions, which is not conducive to the use of the power turret. In addition, the structure of the two separate control arrangements is relatively scattered, which is easy to affect the structure size of the turret.

[0003] In the prior art, for example, Korean utility model patent KR1020230149567A discloses a turret misalignment detection device, more specifically, it relates to a machine tool that can automatically, quickly and accurately detect the turret orientation deviation of the milling spindle to prevent damage or destruction of the equipment; by making pi1bu work horizontally on the drive shaft, before the milling cutter holder is replaced, the directional misalignment is detected once according to the sensing result of the sensing part and whether pi1bu is working normally; even if the first detection result shows that it is working normally, the directional misalignment is further detected and an alarm is issued according to the phase change of the spindle motor and / or whether the index motor is overloaded when the milling cutter holder is replaced, so as to prevent damage or destruction of the tool or equipment; Regarding the turret directional misalignment detection device and detection method, the device can reduce maintenance costs and time, and can improve production efficiency as non-processing time is reduced. Production efficiency, maximize the stability and reliability of the turret; in this utility model patent, the main basis for the detection of turret misalignment is the sensor sensing unit, which automatically detects the orientation deviation used to combine the milling fixture with the clutch shaft. The direct basis for detection and adjustment is the clutch and the mounting fixture, and the processing accuracy is relatively high. However, the control accuracy of the turret itself still relies on the traditional turret power output to control the tool movement on the tool holder. When this control method uses a power turret as a precise motion control, the sensing adjustment between the fixture and the clutch output shaft is difficult to ensure the tool movement stability during the entire tool processing process. The control effect of the internal transmission of the turret is not enough to control the stable movement of the turret power motor to improve the processing accuracy. In addition, the response speed of a large amount of detection and storage data analysis is slow, and it is difficult to meet the tool movement response requirements during high-speed processing. Utility Model Content

[0004] The utility model aims to provide a motor-controlled power turret to solve the problems in the prior art that the motor control effect of the power turret is poor and the mutual influence between transmission controls affects the machining accuracy.

[0005] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] A motor-controlled power turret comprises a turret box, wherein an installation cavity is provided in the turret box, and the characteristic is that a tool control mechanism is provided in the installation cavity, a tool changing control mechanism is provided at the front end of the turret box, and the tool control mechanism comprises a partition plate fixedly connected in the installation cavity, an output spindle is rotatably connected in the partition plate, the right end of the output spindle is rotatably connected to the output driven shaft through a bevel gear, an output coupling is fixedly connected to the left end face of the output spindle, and the output spindle is rotatably connected to the inner wall of the rotating disk hole through a bearing; the assembly accuracy of the turret is improved, the mutual influence between tool changing and tool drive transmission is reduced, and the reliability of the turret power transmission is improved.

[0007] Preferably, the front end of the turret box is fixedly connected to a cutter disc mounting seat, the front end of the cutter disc mounting seat is rotatably connected to a cutter disc rotating disk, the front end of the cutter disc rotating disk is fixedly connected to a cutter disc seat, and the output driven shaft is rotatably connected inside the cutter disc seat.

[0008] Preferably, a tool control motor box is fixedly connected in the installation cavity, a motor installation cavity is provided in the tool control motor box, a control motor spindle is rotatably connected in the motor installation cavity, the control motor spindle passes through the right end wall of the motor installation cavity, the right end face of the control motor spindle is fixedly connected to the output coupling, a tool motor rotor is provided in the motor installation cavity, the left end of the control motor spindle is fixedly connected to the tool motor rotor, a tool motor stator is fixedly connected in the circumferential direction of the inner wall of the motor installation cavity, and the positions of the tool motor stator and the tool motor rotor cooperate with each other; the turret tool control accuracy and the tool movement response speed are improved, the power turret motor control accuracy and stability are improved, and the control effect during tool processing is improved.

[0009] Preferably, the tool changing control mechanism includes a tool changing turntable seat arranged in the installation cavity, a turntable hole is provided in the tool disc rotating disc, the tool disc rotating disc passes through the right end wall of the installation cavity, the left end face of the tool disc rotating disc is fixedly connected to the tool changing turntable seat, a group of evenly distributed tool changing indexing rotors are fixedly connected in the circumferential direction of the tool changing turntable seat, a group of evenly distributed tool changing indexing stators are fixedly connected in the installation cavity, and the positions of the tool changing indexing stators and the tool changing indexing rotors cooperate with each other; the accuracy of the tool disc rotation and tool changing position docking is improved, and the stability of the power transmission of the power turret for tool changing is improved.

[0010] Preferably, a group of symmetrically distributed fixing mounting cavities are provided in the circumferential direction of the inner wall of the right end of the mounting cavity, a tool changing fixing hydraulic cylinder is fixedly connected in the fixing mounting cavity, a hydraulic rod seat is slidably connected in the tool changing fixing hydraulic cylinder, and the hydraulic rod seat cooperates with the side wall of the tool disc rotating disk, thereby improving the stability of tool changing rotation and fixing, and improving the expansion performance of the cooling and lubrication systems equipped with the power turret structure.

[0011] Preferably, a tool change turntable bearing is fixedly connected to the left end of the cutter disc rotating disk, and the tool change turntable bearing can be rotatably connected to the cutter disc mounting seat. A group of evenly distributed lubrication installation cavities are fixedly connected in the inner circumferential direction of the cutter disc mounting seat, and the position of the lubrication installation cavity cooperates with the tool change turntable bearing.

[0012] Preferably, a lubrication pressure chamber is provided in the lubrication installation chamber, and a wetting block is slidably connected in the lubrication pressure chamber. The wetting block passes through the right end wall of the lubrication pressure chamber, and the position of the wetting block corresponds to the tool changing turntable bearing. A gap is left between the wetting block and the tool changing turntable bearing. A lubrication convergence spring is fixedly connected to the left end face of the wetting block, and one end of the lubrication convergence spring is fixedly connected to the left end wall of the lubrication pressure chamber.

[0013] Preferably, the wetting block is made of a material with fine pores, and the cutter disc mounting seat and the lubrication mounting cavity are connected to the lubrication pressure cavity through the internal holes and grooves; the tool change lubrication control effect is improved, the control accuracy of the tool change action is improved, and the service life of the power turret is increased.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a tool motor rotor, a tool motor stator, a control motor spindle and an output spindle, which can drive the tool motor stator to drive the control motor spindle to rotate and transmit power to control the movement of the tool through the output spindle, thereby reducing the mutual influence between tool change and tool drive transmission, improving the reliability of the tool turret power transmission, improving the tool control accuracy of the tool turret and the tool movement response speed, and improving the accuracy and control effect of the power tool turret motor control; by providing a tool changing indexing stator, a tool changing indexing rotor, a tool changing turntable seat, a tool disc rotating disc, a tool changing fixed hydraulic cylinder and a hydraulic rod seat, the tool changing indexing stator can drive the tool changing indexing rotor to drive the tool changing turntable When the disc seat rotates, it synchronously drives the tool change turntable seat and the cutter disc rotating disc to rotate. In the process of the tool change fixed hydraulic cylinder driving the hydraulic rod seat to extend and retract, the tool change rotation and parking are controlled, thereby improving the accuracy of the cutter disc rotation and tool change position parking, improving the stability of the power turret transmission and the expandability of the cooling and lubrication systems equipped with the power turret; by providing a lubrication installation cavity, a lubrication convergence spring and a wetting block, the lubrication oil pressure can be controlled to control the wetting block to drip the infiltrated lubricating oil at the tool change transmission position, and restore normal lubrication under the contraction of the lubrication convergence spring, thereby improving the active lubrication effect of the tool change transmission, improving the control accuracy of the tool change action, and increasing the service life of the power turret. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 The utility model is a schematic diagram of the overall three-dimensional structure of a motor-controlled power turret.

[0018] Figure 2 This is a schematic diagram of the main view of a motor-controlled power turret of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a motor-controlled power turret of the utility model;

[0020] Figure 4 yes Figure 3 A partial enlarged schematic diagram of the middle tool control motor box;

[0021] Figure 5 yes Figure 3 A partial enlarged schematic diagram of the middle cutter head rotating disk;

[0022] Figure 6 yes Figure 5 A partial enlarged schematic diagram of the fixed hydraulic cylinder for tool change in the middle;

[0023] Figure 7 yes Figure 5 A partial enlarged schematic diagram of the middle cutter disc mounting seat;

[0024] Figure 8 yes Figure 7 Three-dimensional schematic diagram of the lubrication installation cavity;

[0025] Fig. 9 yes Figure 3 Three-dimensional schematic diagram of the middle tool change turntable seat;

[0026] Fig.10 yes Fig. 9 A schematic diagram of the main view;

[0027] Fig.11 yes Fig.10 AA cross-sectional view in FIG.

[0028] Fig.12 yes Figure 5 Schematic diagram of the assembly of the tool change turntable seat 41 and the cutter disc rotating disc 14;

[0029] Fig.13 It is a three-dimensional schematic diagram of the tool changing fixed hydraulic cylinder 42 in 5.

[0030] Figure numbers: turret box 10; installation cavity 11; partition layer 12; cutter disc mounting seat 13; cutter disc rotating disk 14; cutter disc seat 15; output driven shaft 16; output spindle 17; encoder 18; tool control mechanism 20; tool control motor box 21; control motor spindle 22; output coupling 23; motor installation cavity 24; tool motor stator 25; tool motor rotor 26; tool change control mechanism 40; tool change turntable seat 41; tool change fixed hydraulic cylinder 42; rotating disk hole 43; tool change indexing rotor 44; hydraulic rod seat 45; tool change turntable bearing 46; fixed installation cavity 47; tool change indexing stator 48; lubrication installation cavity 50; lubrication convergence spring 51; infiltration block 52; lubrication pressure cavity 53. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0033] Embodiment 1

[0034] like Figures 1 to 4 As shown, the utility model provides a motor-controlled power turret, including a turret box 10, wherein an installation cavity 11 is provided in the turret box 10, and the characteristic is that a tool control mechanism 20 is provided in the installation cavity 11, and a tool change control mechanism 40 is provided at the front end of the turret box 10, and the tool control mechanism 20 includes a partition plate 12 fixedly connected in the installation cavity 11, and an output spindle 17 is rotatably connected in the partition plate 12, and the right end of the output spindle 17 is rotatably connected to the output driven shaft 16 through a bevel gear, and an output coupling 23 is fixedly connected to the left end face of the output spindle 17, and the output spindle 17 is rotatably connected to the inner wall of the rotating disk hole 43 through a bearing; the output spindle 17 drives the output driven shaft 16 to rotate to drive the tool of the power tool holder, isolates the turret transmission system, improves the assembly accuracy of the turret, reduces the mutual influence between the tool change and the tool drive transmission, and improves the reliability of the turret power transmission.

[0035] A cutter disc mounting seat 13 is fixedly connected to the front end of the turret box 10 , a cutter disc rotating disk 14 is rotatably connected to the front end of the cutter disc mounting seat 13 , a cutter disc seat 15 is fixedly connected to the front end of the cutter disc rotating disk 14 , and an output driven shaft 16 is rotatably connected inside the cutter disc seat 15 .

[0036] A tool control motor box 21 is fixedly connected in the installation cavity 11, and a motor installation cavity 24 is provided in the tool control motor box 21. A control motor spindle 22 is rotatably connected in the motor installation cavity 24. The control motor spindle 22 passes through the right end wall of the motor installation cavity 24, and the right end face of the control motor spindle 22 is fixedly connected to the output coupling 23. A tool motor rotor 26 is provided in the motor installation cavity 24, and the left end of the control motor spindle 22 is fixedly connected to the tool motor rotor 26. A tool motor stator 25 is fixedly connected in the circumferential direction of the side wall of the motor installation cavity 24, and the positions of the tool motor stator 25 and the tool motor rotor 26 cooperate with each other; the tool motor rotor 26 rotates under the drive of the tool motor stator 25, and at the same time drives the control motor spindle 22 to rotate synchronously to transmit the motion to the output coupling 23 and the output spindle 17, and directly provides the tool movement power through the built-in drive motor, thereby improving the turret tool control accuracy and tool movement response speed, improving the accuracy and stability of the power turret motor control, and improving the control effect during tool processing.

[0037] See attached Figure 5 To Attachment Fig.13 As shown, the tool changing control mechanism 40 includes a tool changing turntable seat 41 arranged in the installation cavity 11, a turntable hole 43 is provided in the tool disc rotating disk 14, the tool disc rotating disk 14 passes through the right end wall of the installation cavity 11, and the left end face of the tool disc rotating disk 14 is fixedly connected to the tool changing turntable seat 41, a group of evenly distributed tool changing indexing rotors 44 are fixedly connected to the tool changing turntable seat 41 in the circumferential direction, and a group of evenly distributed tool changing indexing stators 48 are fixedly connected in the installation cavity 11, and the positions of the tool changing indexing stators 48 and the tool changing indexing rotors 44 cooperate with each other; when the tool changing indexing stator 48 drives the tool changing indexing rotor 44 to drive the tool changing turntable seat 41 to rotate, power transmission is provided for the tool disc rotation and tool changing action, the accuracy of the tool disc rotation and tool changing position docking is improved, and the stability of the power transmission of the power turret for tool changing is improved.

[0038] A group of symmetrically distributed fixed installation cavities 47 are provided in the inner circumferential direction of the right end wall of the installation cavity 11, and a tool changing fixed hydraulic cylinder 42 is fixedly connected in the fixed installation cavity 47, and a hydraulic rod seat 45 is slidably connected in the tool changing fixed hydraulic cylinder 42, and the hydraulic rod seat 45 cooperates with the side wall of the cutter disc rotating disk 14; under the drive of hydraulic power, the hydraulic rod seat 45 is driven to contract and extend by the tool changing fixed hydraulic cylinder 42 as needed, so that the hydraulic rod seat 45 is squeezed and fitted on the circumference of the cutter disc rotating disk 14 for rotation limitation or separation and release rotation, thereby improving the stability of tool changing rotation and fixation, isolating the influence of the tool changing transmission process of the power turret on the rotation of the driving tool, and improving the expansion performance of the cooling and lubrication systems equipped with the power turret structure.

[0039] A tool change turntable bearing 46 is fixedly connected to the left end of the cutter disc rotating disk 14, and the tool change turntable bearing 46 can be rotatably connected to the cutter disc mounting seat 13. A group of evenly distributed lubrication installation cavities 50 are fixedly connected in the inner circumferential direction of the cutter disc mounting seat 13, and the position of the lubrication installation cavity 50 cooperates with the tool change turntable bearing 46.

[0040] A lubrication pressure chamber 53 is provided in the lubrication installation chamber 50, and a wetting block 52 is slidably connected in the lubrication pressure chamber 53. The wetting block 52 passes through the right end wall of the lubrication pressure chamber 53. The position of the wetting block 52 corresponds to the tool change turntable bearing 46. A gap is left between the wetting block 52 and the tool change turntable bearing 46. A lubrication convergence spring 51 is fixedly connected to the left end face of the wetting block 52, and one end of the lubrication convergence spring 51 is fixedly connected to the left end wall of the lubrication pressure chamber 53.

[0041] The infiltration block 52 is made of a material with fine pores. The cutter head mounting seat 13 and the lubrication mounting cavity 50 are connected to the lubrication pressure cavity 53 through the internal holes and grooves. The separated motor drives the movement of the tool installed on the cutter head seat 15 and the cutter head rotating disk 14 drives the cutter head seat 15 to rotate synchronously for tool changing. When the tool changing rotary disk seat 41 drives the cutter head rotating disk 14 and the cutter head seat 15 to rotate on the cutter head mounting seat 13, the lubrication mounting cavity 50 evenly distributed in the circumferential groove opened on the cutter head mounting seat 13 guides the lubrication oil, and the lubrication oil guided by the pipeline enters the lubrication pressure cavity 53, and the infiltration is driven by the lubrication oil pressure. The block 52 moves right in the lubrication pressure chamber 53. When the wetting block 52 and the tool change turntable bearing 46 reach a mating state, the lubricating oil soaked in the wetting block 52 drips and spreads in the tool change turntable bearing 46. When lubrication is not needed, the lubricating contraction spring 51 drives the wetting block 52 to shrink in the lubrication pressure chamber 53 and restores the non-mating state with the tool change turntable bearing 46. At the same time, the lubricating oil soaked in the wetting block 52 falls on the edge contact surface of the tool change turntable bearing 46 to form an oil film seal, thereby improving the tool change lubrication control effect, improving the active lubrication effect of the tool change transmission, improving the control accuracy of the tool change action, and improving the service life of the power turret.

[0042] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the utility model, and are not intended to limit the implementation methods of the technology of the utility model in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the utility model, but they should still be regarded as technologies or embodiments that are essentially the same as the utility model.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A motor-controlled power turret, comprising a turret box (10), wherein a mounting cavity (11) is provided in the turret box (10), characterized in that: A tool control mechanism (20) is provided in the installation cavity (11), and a tool change control mechanism (40) is provided at the front end of the turret box (10). The tool control mechanism (20) comprises a partition plate (12) fixedly connected to the installation cavity (11), an output spindle (17) is rotatably connected to the partition plate (12), a right end of the output spindle (17) is rotatably connected to an output driven shaft (16) via a bevel gear, and an output coupling (23) is fixedly connected to the left end face of the output spindle (17).

2. A motor-controlled power turret according to claim 1, characterized in that: The front end of the turret box (10) is fixedly connected to a cutter disc mounting seat (13), the front end of the cutter disc mounting seat (13) is rotatably connected to a cutter disc rotating disk (14), the front end of the cutter disc rotating disk (14) is fixedly connected to a cutter disc seat (15), and the cutter disc seat (15) is rotatably connected to an output driven shaft (16).

3. The motor-controlled power turret according to claim 1, characterized in that: A tool control motor box (21) is fixedly connected to the installation cavity (11), a motor installation cavity (24) is provided in the tool control motor box (21), a control motor main shaft (22) is rotatably connected to the motor installation cavity (24), the control motor main shaft (22) passes through the right end wall of the motor installation cavity (24), the right end face of the control motor main shaft (22) is fixedly connected to the output coupling (23), a tool motor rotor (26) is provided in the motor installation cavity (24), the left end of the control motor main shaft (22) is fixedly connected to the tool motor rotor (26), a tool motor stator (25) is fixedly connected to the inner circumferential direction of the side wall of the motor installation cavity (24), and the positions of the tool motor stator (25) and the tool motor rotor (26) are matched with each other.

4. The motor-controlled power turret according to claim 2, characterized in that: The tool changing control mechanism (40) comprises a tool changing turntable seat (41) arranged in the installation cavity (11); a turntable hole (43) is provided in the tool disc rotating disc (14); the tool disc rotating disc (14) passes through the right end wall of the installation cavity (11); the left end surface of the tool disc rotating disc (14) is fixedly connected to the tool changing turntable seat (41); a group of evenly distributed tool changing indexing rotors (44) are fixedly connected to the tool changing turntable seat (41) in the circumferential direction; a group of evenly distributed tool changing indexing stators (48) are fixedly connected in the installation cavity (11); the positions of the tool changing indexing stators (48) and the tool changing indexing rotors (44) cooperate with each other.

5. The motor-controlled power turret according to claim 4, characterized in that: A group of symmetrically distributed retaining installation cavities (47) are provided in the inner circumferential direction of the right end wall of the installation cavity (11); a tool-changing fixed hydraulic cylinder (42) is fixedly connected in the retaining installation cavity (47); a hydraulic rod seat (45) is slidably connected in the tool-changing fixed hydraulic cylinder (42); the hydraulic rod seat (45) cooperates with the side wall of the cutter disc rotating disc (14).

6. The motor-controlled power turret according to claim 4, characterized in that: A tool change turntable bearing (46) is fixedly connected to the left end of the cutter disc rotating disc (14), and the tool change turntable bearing (46) can be rotatably connected to the cutter disc mounting seat (13). A group of evenly distributed lubrication installation cavities (50) are fixedly connected to the inner circumferential direction of the cutter disc mounting seat (13), and the positions of the lubrication installation cavities (50) cooperate with the tool change turntable bearing (46).

7. The motor-controlled power turret according to claim 6, characterized in that: A lubrication pressure chamber (53) is provided in the lubrication installation chamber (50), and a wetting block (52) is slidably connected in the lubrication pressure chamber (53). The wetting block (52) passes through the right end wall of the lubrication pressure chamber (53). The position of the wetting block (52) corresponds to the tool change turntable bearing (46). A gap is left between the wetting block (52) and the tool change turntable bearing (46). A lubrication convergence spring (51) is fixedly connected to the left end surface of the wetting block (52), and one end of the lubrication convergence spring (51) is fixedly connected to the left end wall of the lubrication pressure chamber (53).

8. The motor-controlled power turret according to claim 7, characterized in that: The wetting block (52) is made of a material with fine pores, and the cutter head mounting seat (13) and the lubrication mounting cavity (50) are connected to the lubrication pressure cavity (53) via an internally provided hole groove.

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