Hydraulic axial vibration chip breaking cutter handle and vibration chip breaking method

Abstract

The invention discloses a hydraulic drive axial vibration chip breaking cutter handle and a vibration chip breaking method. The vibration chip breaking cutter handle comprises a power mechanism, a vibration mechanism and a torque transmission mechanism. The torque transmission mechanism comprises a shell assembly connected with a machine tool connecting handle. Cooling liquid of a machine tool serves as a power source, and the tool has the axial vibration chip breaking function and the cutting function during hole machining through an ingenious and simple mechanical structure; therefore, no extra power source needs to be added, any structure of the machine tool is not changed, the cost of a user is reduced, and use is simplified; the structural design of vibration chip breaking, torque transmission and the like is ingenious, the structure is simple, and compared with an existing hydraulic pulse type and piezoelectric ceramic driving type vibration chip breaking cutter handle, the vibration chip breaking cutter handle has the advantages in manufacturing cost and using cost; therefore, the device is simpler and more ingenious to use, is widely suitable for the hole machining industry, and has very important significance on deep development of the tool industry.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing equipment, and in particular relates to a hydraulic axial vibration chip breaker handle and a vibration chip breaking method in hole processing. Background Art

[0002] The problem of chip breakage needs to be solved during hole machining. The traditional way is to design the tool so that it can not only meet the cutting requirements but also have chip breaking functions. This method not only increases the production cost of the tool, but also fails to achieve versatility. It has high requirements on user parameters and cannot meet market needs.

[0003] In order to make the tools more versatile, many vibrating chip breaker holders have appeared. The vibrating chip breaker holders enable the tools to have chip breaking function during processing. The current mainstream vibration chip breaking methods include hydraulic pulse type (such as Schenck VibroFlex) and piezoelectric ceramic drive type (such as Schenck LiquiFlex).

[0004] The hydraulic pulse vibration chip breaker tool holder utilizes the machine tool hydraulic system or an independent hydraulic unit, and is controlled by a precise hydraulic valve to periodically inject and release hydraulic oil into the piston chamber inside the tool holder, thereby driving the tool rod to generate axial pulse vibration.

[0005] Piezoelectric ceramic driven vibration chip breaker handles utilize the inverse piezoelectric effect of piezoelectric ceramic materials. When a high-frequency voltage is applied to the piezoelectric ceramic stack, its length changes slightly, thereby driving the connected mechanism to generate high-frequency micro-vibrations.

[0006] However, the use costs of the above two mainstream vibration chip breaker handles are very high. Therefore, in order to reduce the use cost of the existing vibration chip breaker handles, the present invention designs a hydraulic axial vibration chip breaker handle. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention discloses a hydraulic axial vibration chip breaking tool holder and a vibration chip breaking method, which not only meets the chip breaking requirements of hole processing, but also reduces the manufacturing cost of the tool, which is more conducive to market promotion and use.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] Hydraulic axial vibration chip breaker holder, including:

[0010] A power mechanism comprising a fluid-driven rotating assembly and an output shaft fixedly connected to the fluid-driven rotating assembly, wherein the end surface of the output shaft is an inclined surface;

[0011] A vibration mechanism comprising a vibration actuator shaft and a rolling assembly slidably disposed on the upper end of the vibration actuator shaft, the rolling assembly comprising a rolling element, the rolling element being in contact with the inclined surface of the output shaft, and the rolling element being eccentrically disposed relative to the axis of the output shaft, the output end of the vibration actuator shaft being fixedly connected to the tool, the vibration mechanism comprising a support spring, the top end of the support spring abutting against the vibration actuator shaft so that the rolling element is always in contact with the inclined surface of the output shaft;

[0012] The torque transmission mechanism includes a housing assembly connected to a machine tool connecting handle, wherein the power mechanism and the vibration mechanism are both arranged in the housing assembly. The torque transmission mechanism also includes a torque transmission assembly connected to the vibration execution shaft and the housing assembly respectively, so that the vibration execution shaft can slide up and down relative to the housing assembly, and can also transmit the torque of the housing assembly to the vibration execution shaft, and the vibration does not affect the concentricity of the execution shaft.

[0013] As a further description of the above technical solution:

[0014] The fluid-driven rotating component includes a component that can be rotated by fluid driving, such as an impeller or a turbine.

[0015] As a further description of the above technical solution:

[0016] A working chamber of a fluid-driven rotating assembly is defined within the housing assembly, and the fluid-driven rotating assembly is rotatably disposed within the working chamber. The housing assembly further defines a fluid channel, and an output end of the fluid channel is connected to a side surface of the working chamber so that high-speed fluid in the fluid channel can drive an impeller or turbine to rotate.

[0017] As a further description of the above technical solution:

[0018] The angle of the output shaft bevel is 1-4°, and the eccentric spacing of the rolling elements is 0.5-4mm, so that the tool amplitude is 0.01-0.5mm, thereby achieving better axial vibration chip breaking of the tool.

[0019] As a further description of the above technical solution:

[0020] The shell assembly is provided with a pressure relief channel connected to the working chamber, and a pressure relief valve is provided in the pressure relief channel. By controlling the pressure relief valve, the fluid discharge flow rate is controlled, thereby controlling the rotation speed of the fluid-driven rotating assembly and the output shaft to achieve the control of the vibration mechanism vibration chip breaking frequency.

[0021] As a further description of the above technical solution:

[0022] The rolling assembly also includes a rolling body mounting seat, and the rolling body is mounted on the rolling body mounting seat (such as a universal wheel structure) by rolling a number of small steel balls, thereby reducing friction and enabling the rolling body to better drive the vibration actuator shaft to vibrate; a sliding groove is provided on the upper end surface of the vibration actuator shaft, and the rolling body mounting seat is installed in the sliding groove. The vibration actuator shaft is provided with threaded holes on the opposite sides of the sliding groove, and the vibration actuator shaft is provided with a screw in the threaded hole. The output end of the screw abuts on the rolling body mounting seat. After adjusting the eccentricity position of the rolling body, the screw abuts on the rolling body mounting seat to fix the rolling assembly and adjust the eccentricity to adjust the amplitude.

[0023] As a further description of the above technical solution:

[0024] The torque transmission mechanism includes steel balls, a fixed outer ring fixedly connected to the housing assembly, and a transmission inner ring circumferentially fixedly connected to the vibration execution shaft, the transmission inner ring is arranged in the fixed outer ring, and there is a gap between the two; the inner ring of the fixed outer ring is provided with more than three L-shaped protrusions, and the outer ring of the transmission inner ring is provided with L-shaped grooves at positions corresponding to the L-shaped protrusions, and the steel balls are arranged in the space formed by the L-shaped grooves of the transmission inner ring and the L-shaped protrusions of the fixed outer ring; the housing assembly is driven to rotate by the machine tool connecting handle, and the housing assembly drives the fixed outer ring to rotate, and the fixed outer ring transmits torque through the steel balls to drive the transmission inner ring to rotate, thereby driving the vibration execution shaft and the tool to rotate to complete the cutting work.

[0025] As a further description of the above technical solution:

[0026] The thickness of the transmission inner ring is smaller than that of the fixed outer ring. The difference in thickness between the transmission inner ring and the fixed outer ring is greater than the distance between the highest and lowest positions of the inclined surface of the output shaft. The difference in thickness between the transmission inner ring and the fixed outer ring is smaller than the radius of the steel ball. Since the transmission inner ring and the vibration execution shaft are clearance fit, there is a certain amount of space to make up for the manufacturing error of the transmission inner ring and the fixed outer ring, that is, the transmission inner ring can vibrate freely and has a certain free movable gap in the radial direction, so that multiple steel balls can simultaneously play the role of transmitting torque when transmitting torque; at the same time, the vibration execution shaft can vibrate up and down to complete chip breaking.

[0027] As a further description of the above technical solution:

[0028] The lower end of the support spring abuts against the housing assembly, and the vibration actuator shaft is supported by the housing assembly so that the rolling element is always in contact with the inclined surface of the output shaft.

[0029] The vibration chip breaking method of the hydraulic axial vibration chip breaker holder includes the following steps:

[0030] S1: Fluid is ejected from the fluid channel of the housing assembly to drive the rotating assembly, and the fluid drives the rotating assembly to rotate the output shaft;

[0031] S2: Since the rolling element is eccentrically set and the end face of the output shaft is an inclined surface, when the output shaft rotates, the rolling element and the output shaft inclined surface roll in contact at different heights, forming a high-speed up and down movement, thereby driving the vibrating actuator shaft to vibrate up and down, causing the tool fixed on the vibrating actuator shaft to vibrate and break chips;

[0032] S3: At the same time, the machine tool connecting handle drives the housing assembly to rotate, the housing assembly drives the fixed outer ring to rotate, the fixed outer ring transmits torque through the steel balls to drive the transmission inner ring to rotate, and the transmission inner ring drives the vibration execution shaft to rotate, thereby driving the tool fixed on the vibration execution shaft to rotate to complete the cutting work.

[0033] The present invention has the following beneficial effects:

[0034] The present invention provides a hydraulic axial vibration chip breaker handle. The present invention drives the fluid-driven rotating component to drive the output shaft to rotate through its own fluid (such as coolant, etc.), and then rolls the rolling body at the inclined surface and eccentric position at different heights to form up and down vibration chip breaking. At the same time, the torque of the machine tool connecting handle is transmitted to the tool for cutting through the torque transmission mechanism, thereby solving the problem that iron chips are not easy to break or are entangled during hole processing; in addition, the vibration chip breaker handle of the present invention reduces the production cost of the tool, improves the versatility and service life of the tool.

[0035] The present invention uses the coolant of the machine tool itself as a power source, and through a clever and simple mechanical structure, enables the tool to have axial vibration chip breaking and cutting functions during hole processing; therefore, the present invention does not require the addition of an additional power source, does not change any structure of the machine tool, reduces the cost for users, and simplifies use; and the present invention realizes vibration chip breaking and torque transmission, and the structural design is clever and simple in structure. Compared with the existing hydraulic pulse type and piezoelectric ceramic driven vibration chip breaker handles, it has advantages in terms of both manufacturing cost and use cost; therefore, the present invention is simpler and more clever to use, and is widely applicable to the hole processing industry, which is of great significance to the in-depth development of the tool industry. In addition, the present invention can conveniently adjust the vibration frequency and accurately adjust the amplitude according to different processed materials and processing parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic cross-sectional view of a hydraulic axial vibration chip breaker handle provided by the present invention;

[0037] Figure 2 A schematic diagram of a partial cross-sectional structure of a hydraulic axial vibration chip breaker handle provided by the present invention;

[0038] Figure 3 A schematic structural diagram of a torque transmission mechanism of a hydraulic axial vibration chip breaker handle provided by the present invention.

[0039] Figure markings: 1-housing assembly; 2-vibration actuator shaft; 3-fluid channel; 4-fluid driven rotating assembly; 5-output shaft; 6-inclined surface; 7-rolling element; 8-screw; 9-linear bearing; 10-fixed outer ring; 11-steel ball; 12-transmission inner ring; 13-end cover; 14-screw; 15-support spring; 16-slide groove; 17-rolling element mounting seat; 18-pressure relief channel; 19-bearing; 20-L-shaped groove; 21-L-shaped protrusion. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] The vibrating chip breaker handle provided by the present invention is not limited to hole processing; that is, those skilled in the art who choose the hydraulic axial vibrating chip breaker handle protected by the present invention to implement other processing methods (such as cutting) are all within the protection scope of the present invention.

[0043] It is worth noting that the fluid used in the present invention is the coolant of the machine tool itself. The coolant enters the fluid channel of the shell assembly through the machine tool connecting handle and is sprayed as a power source, but the present invention does not limit its fluid to coolant. In other words, as long as those skilled in the art choose other fluids or replace them with other fluid sources using the structural principles of the present invention to achieve vibration chip breaking, they are all within the scope of protection of the present invention.

[0044] Example 1

[0045] A hydraulic axial vibration chip breaker handle comprises a power mechanism, a vibration mechanism and a torque transmission mechanism; the torque transmission mechanism comprises a housing assembly 1 connected to a machine tool connecting handle.

[0046] The power mechanism includes a fluid-driven rotating component 4, which includes a fluid-driven rotating component such as an impeller or a turbine that can realize rotation. The present invention is not limited to the selection of an impeller or a turbine. As long as other liquid-driven rotating components that can meet the speed and torque requirements are within the scope of protection of the present invention.

[0047] Preferably, a side-injection impeller can be used. It should be noted that the present invention is not limited to side-injection, and axial injection to achieve rotation is also within the scope of protection of the present invention, but the requirements for the impeller are relatively high.

[0048] The power mechanism also includes an output shaft 5 fixedly connected to the fluid-driven rotating component 4. The rotation of the fluid-driven rotating component 4 drives the output shaft 5 to rotate. The end face of the output shaft 5 is an inclined surface 6. The fluid-driven rotating component 4 is connected to the housing component 1 through a bearing 19.

[0049] Preferably, a working chamber of a fluid-driven rotating component 4 is provided in the shell assembly 1, and the fluid-driven rotating component 4 can be rotatably arranged in the working chamber. The shell assembly 1 also has a fluid channel 3, and the output end of the fluid channel 3 is connected to the side of the working chamber so that the high-speed fluid in the fluid channel 3 is ejected from the side to drive the impeller or turbine to rotate, and the impeller or turbine rotates the output shaft 5.

[0050] Preferably, the shell assembly 1 is provided with a pressure relief channel 18 connected to the working chamber, and a pressure relief valve is provided in the pressure relief channel 18. The fluid discharge flow is controlled by controlling the pressure relief valve, thereby controlling the rotation speed of the fluid-driven rotating assembly 4 and the output shaft 5 to achieve the control of the vibration mechanism's vibration chip breaking frequency. The reason for designing the vibration chip breaking frequency in the present invention is that different amplitudes and vibration frequencies are required for different processed materials.

[0051] The vibration mechanism includes a vibration execution shaft 2 and a rolling assembly. The rolling assembly can be slidably arranged at the upper end of the vibration execution shaft 2. The rolling assembly includes a rolling body 7. The rolling body 7 contacts and cooperates with the inclined surface 6 of the output shaft 5, and the rolling body 7 is eccentrically arranged with respect to the axis of the output shaft 5. The output end of the vibration execution shaft 2 is fixedly connected to the tool. It is worth noting that the purpose of the rolling assembly being located at the eccentric position of the axis of the vibration execution shaft 2 in the accompanying drawings in this embodiment is to make the rolling body 7 eccentrically arranged with respect to the axis of the output shaft 5. Because the lower end face of the output shaft 5 is the inclined surface 6, only in the eccentric position can the output shaft 5 rotate and drive the rolling body 7 to roll while moving up and down at high speed to realize vibration chip breaking of other components. However, the present invention does not limit the rolling assembly to be located at the eccentric position of the vibration execution shaft 2, as long as the rolling body 7 is eccentric relative to the axis of the output shaft 5.

[0052] Preferably, the rolling assembly also includes a rolling element mounting seat 17, and the rolling element 7 is mounted on the rolling element mounting seat 17 (such as a universal wheel structure) by rolling a number of small steel balls, thereby reducing friction and enabling the rolling element to better drive the vibration actuator shaft 2 to vibrate. A slide groove 16 is provided on the upper end surface of the vibration actuator shaft 2, and the rolling element mounting seat 17 is installed in the slide groove 16. The vibration actuator shaft 2 is provided with threaded holes on the opposite sides of the slide groove 16, and the vibration actuator shaft 2 is provided with a screw 8 in the threaded hole. The output end of the screw 8 abuts on the rolling element mounting seat 17. After adjusting the eccentric position of the rolling element 7, the screw 8 abuts on the rolling element mounting seat 17 to achieve the fixing of the rolling assembly and the adjustment of the eccentricity, thereby adjusting the amplitude; of course, the above-mentioned setting of the slide groove 16 to make the rolling assembly slide to adjust the eccentricity and fix it by the screw 8 is only a preferred solution. People in this field choose other ways of adjusting the eccentricity and fixing methods that are within the protection scope of the present invention.

[0053] The vibration mechanism also includes a support spring 15, the top end of the support spring 15 abuts against the vibration execution shaft 2, and the lower end of the support spring 15 abuts against the shell assembly 1, so that the rolling body 7 is always in contact with the inclined surface 6 of the output shaft 5. The support spring 15 plays an important role in the invention because the rolling body 7 moves up and down at high speed under the action of the inclined surface 6. At this time, the elastic force of the support spring 15 is required to enable the rolling body 7 to always be in contact with the inclined surface 6 of the output shaft 5; it is worth noting that the present invention is not limited to springs. People in this field can choose other elastic components (such as bellows) as long as they can achieve the goal of making the rolling body 7 always in contact with the inclined surface 6 of the output shaft 5. It is also within the protection scope of the present invention. In addition, the present invention does not limit whether the upper and lower ends of the support spring 15 are in direct or indirect contact with the vibration execution shaft 2 and the shell assembly 1 respectively.

[0054] The torque transmission mechanism also includes a torque transmission assembly connected to the vibration execution shaft 2 and the housing assembly 1 respectively, so that the vibration execution shaft 2 can slide up and down relative to the housing assembly 1 and can also transmit the torque of the housing assembly 1 to the vibration execution shaft 2.

[0055] Preferably, the torque transmission mechanism includes a steel ball 11, a fixed outer ring 10 fixedly connected to the housing assembly 1, and a transmission inner ring 12 circumferentially fixedly connected to the vibration actuator shaft 2. The transmission inner ring 12 is arranged in the fixed outer ring 10 with a gap between the two. The inner ring of the fixed outer ring 10 is provided with three or more L-shaped protrusions 21, and the outer ring of the transmission inner ring 12 is provided with L-shaped grooves 20 at positions corresponding to the L-shaped protrusions 21. The steel ball 11 is arranged in the space formed by the L-shaped groove 20 of the transmission inner ring 12 and the L-shaped protrusion 21 of the fixed outer ring 10. The housing assembly 1 is rotated by the machine tool connecting handle, and the housing assembly 1 drives the fixed outer ring 10 to rotate. The fixed outer ring 10 transmits torque through the steel ball 11 to drive the transmission inner ring 12 to rotate, thereby driving the vibration actuator shaft 2 and the tool to rotate to complete the cutting work. At the same time, the steel ball 11 has gaps in both the axial and radial directions within the installation space, and can vibrate freely while transmitting torque, so that multiple steel balls can achieve the simultaneous centering effect. The diameter of the steel ball 11 is smaller than the thickness of the fixed outer ring 12, and the thickness of the transmission inner ring 12 is smaller than the thickness of the fixed outer ring 10. The difference in thickness between the transmission inner ring 12 and the fixed outer ring 10 should be greater than the distance between the highest and lowest positions of the inclined surface 6 of the output shaft 5, and the difference in thickness between the transmission inner ring 12 and the fixed outer ring 10 should be less than the radius of the steel ball 11. Because the fit between the transmission inner ring 12 and the vibration actuator shaft 2 is a clearance fit, there is a certain amount of space to compensate for the manufacturing errors of the transmission inner ring 12 and the fixed outer ring 10. That is, the transmission inner ring 12 can vibrate freely and has a certain amount of free movement clearance in the radial direction. When transmitting torque, multiple steel balls 11 can simultaneously transmit torque; at the same time, the vibration actuator shaft 2 can vibrate up and down to complete chip breaking. It is worth noting that the L-shaped protrusion 21 and L-shaped groove 20 are only preferred embodiments and do not limit the scope of protection of the present invention. Protrusions and grooves of other shapes selected by those skilled in the art are also within the scope of protection of the present invention as long as they can achieve torque transmission through the steel ball 11.

[0056] Preferably, the torque transmission mechanism also includes an end cover 13, which is located at the lower end of the fixed outer ring 10. In this embodiment, the end cover 13 and the fixed outer ring 10 are fixed to the shell assembly 1 by a number of screws 14; in this embodiment, the inner ring of the transmission inner ring 12 is an inner hexagonal structure, and the vibration execution shaft 2 and the transmission inner ring 12 cooperate with each other for an outer hexagonal structure, thereby realizing a circumferential fixed connection between the transmission inner ring 12 and the vibration execution shaft 2, and the torque of the transmission inner ring 12 can be transmitted to the vibration execution shaft 2 through the cooperation of the inner hexagonal structure and the outer hexagonal structure; the transmission inner ring 12 and the vibration execution shaft 2 transmit torque through the clearance cooperation of the inner hexagonal structure and the outer hexagonal structure, and there is a certain space to make up for the manufacturing error of the transmission inner ring 12 and the fixed outer ring 10, that is, the transmission inner ring 12 can vibrate freely, so that multiple steel balls 11 can simultaneously play the role of transmitting torque when transmitting torque. It is worth noting that the torque transmission method between the inner ring 12 and the vibration actuator shaft 2 through the clearance fit between the inner hexagonal structure and the outer hexagonal structure does not limit the protection scope of the present invention, and other non-circular structure clearance fit torque transmission methods (such as triangular structure, square structure, octagonal structure, etc.) are also within the protection scope of the present invention.

[0057] Preferably, the vibration actuator shaft 2 extends out of the housing assembly 1 and is fixedly connected to the tool. The vibration actuator shaft 2 is connected in the housing assembly 1 through a linear bearing 19 for positioning and circumferential movement restriction. The linear bearing 19 is only a preferred solution of the present invention and does not limit the protection scope of the present invention. Other methods such as balls are within the protection scope of the present invention as long as they can achieve positioning and reduce friction.

[0058] Preferably, the angle of the inclined surface 6 of the output shaft 5 is 1-4°, and the eccentric spacing of the rolling elements 7 is 0.5-4mm, so that the tool amplitude is 0.01-0.5mm, thereby achieving better axial vibration and chip breaking of the tool. The angle of the inclined surface 6 and the eccentricity can be specifically calculated according to the corresponding amplitude, and the calculation method is conventional trigonometric function. Table 1 shows different amplitudes obtained by different angles of the inclined surface 6 of the output shaft 5 and the eccentric spacing of the rolling elements 7:

[0059]

[0060] Table 1

[0061] In Table 1, the horizontal direction represents the eccentricity, and the vertical direction represents the slope angle.

[0062] Different amplitudes and frequencies are required for hole expansion of different processed materials, as shown in Table 2:

[0063] Processed materials Amplitude (mm) Frequency (Hz) aluminum alloy 0.08-0.15 60-100 High temperature alloy 0.18-0.3 140-220 45 steel 0.14 85 304 stainless steel 0.22 115 TC4 titanium alloy 0.18 155

[0064] Table 2

[0065] The present invention drives the fluid-driven rotating component 4 to drive the output shaft 5 to rotate through its own fluid (such as coolant, etc.), and then rolls with the rolling body 7 in the eccentric position at different heights through the inclined surface 6, forming up and down vibration chip breaking. At the same time, the torque of the machine tool connecting handle is transmitted to the tool for cutting through the torque transmission mechanism, thereby solving the problem that iron chips are not easy to break or are entangled during hole processing; in addition, the vibration chip breaker tool holder of the present invention reduces the production cost of the tool, improves the versatility and service life of the tool.

[0066] Example 2

[0067] A vibration chip breaking method for a hydraulic axial vibration chip breaker handle comprises the following steps:

[0068] (1) Fluid is ejected from the fluid channel 3 of the housing assembly 1 to drive the rotating assembly 4 (i.e., a jet or turbine), and the fluid drives the rotating assembly 4 to rotate the output shaft 5;

[0069] (2) Since the rolling element 7 is eccentrically arranged and the end face of the output shaft 5 is the inclined surface 6, when the output shaft 5 rotates, the rolling element 7 and the inclined surface 6 of the output shaft 5 are in rolling contact at different heights, forming an up and down high-speed movement, thereby driving the vibration actuator shaft 2 to vibrate up and down, causing the tool fixed on the vibration actuator shaft 2 to vibrate and break chips;

[0070] (3) At the same time, the machine tool connecting handle drives the housing assembly 1 to rotate, the housing assembly 1 drives the fixed outer ring 10 to rotate, the fixed outer ring 10 transmits torque through the steel ball 11 to drive the transmission inner ring 12 to rotate, and the transmission inner ring 12 drives the vibration execution shaft 2 to rotate, thereby driving the tool fixed on the vibration execution shaft 2 to rotate to complete the cutting work.

[0071] The present invention uses the machine tool's own coolant as a power source, and through an ingenious and simple mechanical structure, enables the tool to have axial vibration chip breaking and cutting functions during hole processing; therefore, the present invention does not require the addition of an additional power source, does not change any structure of the machine tool, reduces the user's cost, and simplifies use; and the present invention realizes vibration chip breaking and torque transmission, and the structure is ingenious and simple in structure. Compared with the existing hydraulic pulse type and piezoelectric ceramic driven vibration chip breaking tool holders, it has advantages in terms of both manufacturing cost and use cost; therefore, the present invention is simpler and more ingenious to use, and is widely applicable to the hole processing industry, and is of great significance to the in-depth development of the tool industry.

[0072] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 present invention.

[0073] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0074] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Hydraulic axial vibration chip breaker handle, characterized by: include: A power mechanism comprising a fluid-driven rotating assembly and an output shaft fixedly connected to the fluid-driven rotating assembly, wherein the end surface of the output shaft is an inclined surface; A vibration mechanism comprising a vibration actuator shaft and a rolling assembly slidably disposed on the upper end of the vibration actuator shaft, the rolling assembly comprising a rolling element, the rolling element being in contact with the inclined surface of the output shaft, and the rolling element being eccentrically disposed relative to the axis of the output shaft, the output end of the vibration actuator shaft being fixedly connected to the tool, the vibration mechanism comprising a support spring, the top end of the support spring abutting against the vibration actuator shaft so that the rolling element is always in contact with the inclined surface of the output shaft; The torque transmission mechanism includes a housing assembly connected to a machine tool connecting handle, wherein the power mechanism and the vibration mechanism are both arranged in the housing assembly. The torque transmission mechanism also includes a torque transmission assembly connected to the vibration execution shaft and the housing assembly respectively, so that the vibration execution shaft can slide up and down relative to the housing assembly, and can also transmit the torque of the housing assembly to the vibration execution shaft, and the vibration does not affect the concentricity of the execution shaft.

2. A hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: The fluid driven rotating component includes an impeller or a turbine.

3. A hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: A working chamber of a fluid-driven rotating assembly is defined within the housing assembly, and the fluid-driven rotating assembly is rotatably disposed within the working chamber. The housing assembly further defines a fluid channel, and an output end of the fluid channel is connected to a side surface of the working chamber so that high-speed fluid in the fluid channel can drive an impeller or turbine to rotate.

4. A hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: The angle of the output shaft bevel is 1-4°, and the eccentric spacing of the rolling elements is 0.5-4 mm, so that the tool amplitude is 0.01-0.5 mm, thereby achieving better axial vibration chip breaking of the tool.

5. A hydraulic axial vibration chip breaker handle according to claim 4, characterized in that: The shell assembly is provided with a pressure relief channel connected to the working chamber, and a pressure relief valve is provided in the pressure relief channel. By controlling the pressure relief valve, the fluid discharge flow rate is controlled, thereby controlling the rotation speed of the fluid-driven rotating assembly and the output shaft to achieve the control of the vibration mechanism vibration chip breaking frequency.

6. A hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: The rolling assembly also includes a rolling body mounting seat, and the rolling body is mounted on the rolling body mounting seat by rolling a number of small steel balls; a sliding groove is provided on the upper end surface of the vibration execution shaft, and the rolling body mounting seat is installed in the sliding groove. The vibration execution shaft is provided with threaded holes on the opposite sides of the sliding groove, and the vibration execution shaft is provided with a screw in the threaded hole. The output end of the screw abuts on the rolling body mounting seat. After adjusting the eccentricity position of the rolling body, the screw abuts on the rolling body mounting seat to fix the rolling assembly and adjust the eccentricity, thereby adjusting the amplitude.

7. A hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: The torque transmission mechanism includes steel balls, a fixed outer ring fixedly connected to the housing assembly, and a transmission inner ring circumferentially fixed to the vibration execution shaft. The transmission inner ring is arranged in the fixed outer ring, and there is a gap between the two; the inner ring of the fixed outer ring is provided with more than three L-shaped protrusions, and the outer ring of the transmission inner ring is provided with L-shaped grooves at positions corresponding to the L-shaped protrusions. The steel balls are arranged in the space formed by the L-shaped grooves of the transmission inner ring and the L-shaped protrusions of the fixed outer ring.

8. A hydraulic axial vibration chip breaker handle according to claim 7, characterized in that: The thickness of the transmission inner ring is smaller than that of the fixed outer ring. The difference between the thickness of the transmission inner ring and the thickness of the fixed outer ring is greater than the distance between the highest and lowest positions of the inclined surface of the output shaft, and the difference between the thickness of the transmission inner ring and the thickness of the fixed outer ring is less than the radius of the steel ball.

9. The hydraulic axial vibration chip breaker handle according to claim 1, characterized in that: The lower end of the support spring abuts against the housing assembly, and the vibration actuator shaft is supported by the housing assembly so that the rolling element is always in contact with the inclined surface of the output shaft.

10. A vibration chip breaking method for a hydraulic axial vibration chip breaker handle, characterized in that: The steps include: S1: Fluid is ejected from the fluid channel of the housing assembly to drive the rotating assembly, and the fluid drives the rotating assembly to rotate the output shaft; S2: Since the rolling element is eccentrically set and the end face of the output shaft is an inclined surface, when the output shaft rotates, the rolling element and the output shaft inclined surface roll in contact at different heights, forming a high-speed up and down movement, thereby driving the vibrating actuator shaft to vibrate up and down, causing the tool fixed on the vibrating actuator shaft to vibrate and break chips; S3: At the same time, the machine tool connecting handle drives the housing assembly to rotate, the housing assembly drives the fixed outer ring to rotate, the fixed outer ring transmits torque through the steel balls to drive the transmission inner ring to rotate, and the transmission inner ring drives the vibration execution shaft to rotate, thereby driving the tool fixed on the vibration execution shaft to rotate to complete the cutting work.

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