Hydraulic tool holder and machining tooling therefor
By incorporating a cleaning channel and opening/closing assembly within the hydraulic tool holder, combined with the mechanical vibration of the vibrating ball assembly, the problem of contaminant deposition inside the hydraulic tool holder is solved, achieving efficient cleaning and improving the tool holder's service life and cleaning efficiency.
Patent Information
- Application Number
- CN202512047275.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2045-12-31
AI Technical Summary
During the manufacturing and use of existing hydraulic tool holders, the deposition of contaminants in the internal oil circuit system leads to the deterioration of the hydraulic oil, affecting the tool clamping accuracy and coaxiality, and shortening its service life.
A hydraulic tool holder and its machining fixture were designed. By setting a cleaning channel in the tool holder body, the cleaning medium passes through the threaded groove, flow channel, spiral groove and adjustment cavity in sequence, carrying out contaminants and impurities. The pulsating airflow of the medium channel is controlled by the opening and closing component, combined with the mechanical vibration of the vibrating ball component, to achieve efficient cleaning of the interior.
It effectively reduces the rate of hydraulic oil deterioration, ensures tool clamping accuracy and coaxiality, extends the service life of hydraulic tool holders, and achieves adaptive and efficient cleaning without the need for complex external control.
Smart Images
Figure CN121424104B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of hydraulic tool shanks, and more particularly to a hydraulic tool shank and a machining tool thereof. BACKGROUND
[0002] As a key functional component of modern precision CNC machining centers, hydraulic tool shanks are widely used in high-speed and high-precision cutting fields due to their excellent clamping accuracy, excellent dynamic balance performance and strong damping capacity. The core working principle of the hydraulic tool shank is to apply high pressure to the closed oil cavity inside the tool shank body to drive the thin-walled expansion sleeve to produce uniform elastic deformation, thereby realizing the interference clamping of the tool shank. The performance and reliability of this clamping method are highly dependent on the purity and sealing integrity of the internal hydraulic oil circuit.
[0003] The internal oil circuit system of the current mainstream hydraulic tool shank usually includes the following key parts: a hydraulic regulating unit for generating and adjusting oil pressure, a regulating cavity accommodating the unit, one or more connecting channels, a ring-shaped expansion pressure cavity, and a closely matched expansion sleeve. These cavities and flow channels form a completely closed and invisible "black box" system after precise machining during manufacturing. The hydraulic tool shank has a risk of contamination during the manufacturing and use processes.
[0004] The existing hydraulic tool shank machining tool only focuses on the structure machining link and cannot handle the contamination of the entire machining process, resulting in long-term deposition of these contaminants. This not only accelerates the deterioration of hydraulic oil and causes uneven deformation of the expansion sleeve, but also seriously affects the clamping accuracy and coaxiality of the tool, ultimately shortens the overall service life of the tool shank and poses hidden dangers to subsequent use. In view of this, we propose a hydraulic tool shank and a machining tool thereof. SUMMARY
[0005] The present application relates to the technical field of hydraulic tool shanks, and more particularly to a hydraulic tool shank and a machining tool thereof.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydraulic tool holder, comprising a tool holder body, an expansion pressure chamber at the bottom of the tool holder body, an expansion sleeve fixed inside the expansion pressure chamber, a spiral groove A on the surface of the expansion pressure chamber, an annular groove with a trapezoidal cross-section in the middle of the tool holder body, an adjustment chamber on the annular groove, a hydraulic adjustment unit threadedly connected to the adjustment chamber, the adjustment chamber communicating with the bottom of the spiral groove A through a flow channel A, both ends of the flow channel A having an arc-shaped structure, a plurality of machining grooves having an annularly spaced structure on the inclined surface at the top of the annular groove, one of the machining grooves having a threaded groove, a plug unit threadedly connected to the threaded groove, a spiral groove B communicating with the top of the spiral groove A, the spiral groove B communicating with the plug unit through the flow channel B with an arc-shaped structure at the top; the threaded groove, the flow channel B, the spiral groove B, the spiral groove A, the flow channel A, and the adjustment chamber communicate to form a cleaning channel. This invention, through structural design of the tool holder body, allows the cleaning medium to sequentially pass through the threaded groove, flow channel B, spiral groove B, spiral groove A, and flow channel A, and be output from the adjustment chamber, carrying away contaminants and impurities, reducing the rate of hydraulic oil deterioration, ensuring tool clamping accuracy and coaxiality, improving the service life of the hydraulic tool holder, and solving the technical problem of low service life for high-precision hydraulic tool holders.
[0007] A machining fixture for a hydraulic tool holder, applicable to the machining of the aforementioned hydraulic tool holder, includes a base, a horizontal seat fixed to the top of the base, and several clamping seats fixed to the top of the horizontal seat. Several cavities are formed in an annular, equally spaced structure on the clamping seats. Clamping wall assemblies are provided on the cavities. A flow channel C is connected to one side of each cavity. Several connectors are fixed to the surface of the clamping seats, and each connector is connected to one of the flow channels C. The clamping wall assembly includes a piston, a fixed seat, and a top ring block. The piston and the fixed seat are elastically connected by a spring A. A through hole A is formed at the center of one of the pistons. The annular cavity of the top ring block and the through hole A communicate to form a medium channel, which communicates and cooperates with a cleaning channel. An opening and closing assembly for controlling the opening and closing of the medium channel is provided inside the piston. When the opening and closing assembly controls the medium channel to close, the clamping wall assembly and the cavity form a cylinder structure for adjusting the machining of the cavity. When the opening and closing assembly controls the medium channel to open, a certain air pressure and the elastic force of spring A work together to keep the tool holder body in its initial position for expanding the pressure chamber and cleaning the adjustment chamber.
[0008] Preferably, the top of the horizontal seat has a plurality of mounting slots arranged in a linear, equidistant structure, the bottom of the mounting slots has a through groove, and the horizontal seat has two sets of empty slots A arranged in a symmetrical structure. Each set of empty slots A includes a plurality of slots arranged in a linear, equidistant structure, and the empty slots A and the mounting slots are arranged alternately.
[0009] The top end of the clamp base is provided with a circular groove A, the bottom end of the clamp base is provided with a circular groove B, the diameter of the circular groove B is greater than that of the circular groove A, at least one machining cavity is provided on the clamp base, an extension ring is fixedly arranged at the bottom end of the clamp base, and the extension ring is movably connected with the accommodating slot.
[0010] Preferably, the cavity comprises a medium column cavity, a sliding cavity A, a hollow cavity, and an air hole, the medium column cavity is arranged at the bottom end of the clamp base, the sliding cavity A is arranged on the surface of the circular groove B, the hollow cavity is arranged at the bottom end of the sliding cavity A and is in communication with the medium column cavity, the medium column cavity, the sliding cavity A, and the hollow cavity are all arranged in an inclined structure, and the air hole is arranged on the surface of the clamp base and is in communication with the hollow cavity; the top surface of one of the medium column cavities is provided with a sliding cavity B, the sliding cavity B is arranged perpendicularly to the sliding cavity A, a slanting flow groove is arranged at the bottom side of the sliding cavity B, and the eccentric end of the slanting flow groove is in communication with the sliding cavity B.
[0011] Preferably, the piston is slidably arranged on the medium column cavity, a limiting rod is arranged on the piston, the two ends of the limiting rod are fixedly connected with the two ends of the medium column cavity, a limiting ring column is fixedly arranged at the bottom end of the piston, a fixed seat is fixedly arranged at the bottom end of the medium column cavity, and the top ring block is slidably arranged on the sliding cavity A and is fixedly connected with the piston.
[0012] Preferably, a sliding groove is arranged in the piston corresponding to the through hole A, a sliding hole is arranged at one end of the sliding groove close to the sliding cavity B, a spring groove is arranged at one end of the sliding groove away from the sliding cavity B, an empty groove B is arranged at the bottom end of the sliding groove, an elastic strip is fixedly arranged on the empty groove B, and the top section of the elastic strip is in a semicircular shape.
[0013] Preferably, the opening and closing assembly comprises a sliding plate and a sliding shaft, the sliding plate is arranged on the sliding groove and is elastically connected with the spring groove through a spring B, the sliding shaft is slidably arranged on the sliding hole and is fixedly connected with the sliding plate, a through hole B is arranged on the sliding plate and is in communication with the through hole A.
[0014] Preferably, the opening and closing assembly further comprises a sliding block and an adjusting shaft, the sliding block is slidably arranged on the sliding cavity B, a top shaft is fixedly arranged at one end of the sliding block close to the sliding shaft, the top shaft penetrates through the sliding cavity B and is movably connected with the sliding shaft, one end of the sliding block away from the sliding shaft is elastically connected with the sliding cavity B through a spring C, an active hole is arranged at one end of the sliding block away from the sliding shaft, a plurality of partial locking guide grooves are arranged on the active hole in an annular equidistant structure, the adjusting shaft is rotatably arranged on the sliding cavity B, one end of the adjusting shaft away from the sliding shaft penetrates through the clamp base and is fixedly provided with a knob, and the adjusting shaft is movably connected with the locking guide groove through a movable block; the locking guide groove comprises a partial thread guide groove, and an arc guide groove is arranged at one end of the partial thread guide groove close to the sliding shaft.
[0015] Preferably, the bottom end of the sliding plate is provided with a movable cavity, a movable column is movably arranged in the movable cavity, the movable column movably cooperates with the top of the elastic strip, movable guide grooves are formed at both ends of the movable cavity, shaft bodies are rotatably arranged at both ends of the movable column, the shaft bodies movably connect with the movable guide grooves, and the movable guide grooves comprise horizontal guide grooves and oblique guide grooves which are communicated with the horizontal guide grooves away from one end of the sliding shaft.
[0016] Preferably, the top end of the top ring block is provided with an embedding groove, an elastic ring pad is embedded in the embedding groove, an installation groove is formed in the inner surface of the top end of the top ring block, and a shock ball assembly is arranged in the installation groove; the shock ball assembly comprises two circular plates which are arranged in the installation groove in an up-down structure, the two circular plates are fixedly connected through a ring plate, a shock cavity is formed between the ring plate and the two circular plates, a plurality of balls are arranged in the shock cavity, a plurality of circular holes are formed in the two circular plates, the balls movably cooperate with the circular holes, a plurality of semispherical blocks are uniformly arranged at opposite ends of the two circular plates, the plurality of semispherical blocks are arranged alternately with the plurality of circular holes, and the semispherical blocks movably cooperate with the balls.
[0017] The present application has the following beneficial effects:
[0018] 1. The structure design of the tool holder body makes the cleaning medium pass through the thread groove, the flow channel B, the spiral groove B, the spiral groove A, the flow channel A and output from the adjusting cavity in sequence, carries out the pollution impurities, reduces the hydraulic oil deterioration speed, guarantees the tool clamping precision and coaxiality, improves the service life of the hydraulic tool holder, and solves the technical problem of low service life of the high-precision hydraulic tool holder.
[0019] 2. The machining tool of the hydraulic tool holder is designed, the clamping wall assembly and the cavity form a cylinder structure when the opening and closing assembly controls the medium passage to be closed, the plurality of top ring blocks can resist the machining groove of the tool holder body to form a fixed structure, the external machining mechanism passes through the machining cavity to machine the tool holder body, and the machining of the adjusting cavity is adjusted.
[0020] 3、The application is characterized in that the rotation of the knob makes the movable block disengage from the locking guide groove, the high gas pressure in the medium column cavity pushes the sliding block to move, the top shaft pushes the sliding shaft and the sliding plate to move, when the movable column contacts the top of the elastic strip, the reaction force makes the movable column drive the shaft to slide along the horizontal guide groove, until the shaft moves to the end close to the sliding shaft along the horizontal guide groove, at this time, the through hole B partially communicates with the through hole A, because the initial pressure is sufficient, the movable column makes the elastic strip deform and pass the elastic strip, so that the communication gap between the through hole B and the through hole A gradually increases, in this process, the external gas supply mechanism continuously supplies gas, however, the gas output in the medium column cavity is greater than the gas supply of the external gas supply mechanism at this time, the gas pressure in the medium column cavity decreases, the reset force of the spring B and the spring C makes the sliding shaft and the sliding plate reset and move, so that the communication gap between the through hole B and the through hole A gradually decreases, when the movable column contacts the top of the elastic strip, the reaction force makes the movable column drive the shaft to slide along the horizontal guide groove, until the shaft slides on the inclined guide groove, the movable column rises relative to the elastic strip and passes the elastic strip, at this time, because the communication gap between the through hole B and the through hole A decreases, the gas output in the medium column cavity is less than the gas supply of the external gas supply mechanism, so that the gas pressure in the medium column cavity gradually increases, the communication gap between the through hole B and the through hole A gradually increases, until the reaction force of the movable column contacting the top of the elastic strip makes the shaft slide along the horizontal guide groove close to the end of the sliding shaft, under the reaction force of the elastic strip, the movement of the sliding plate is blocked, the communication gap between the through hole B and the through hole A remains unchanged, the gas output in the medium column cavity is greater than the gas supply of the external gas supply mechanism, so that the gas pressure in the medium column cavity increases, until the gas pressure in the medium column cavity reaches a certain degree, the movable column can pass the elastic strip, the communication gap between the through hole B and the through hole A instantaneously increases, a peak gas flow is formed, the above-mentioned process of the communication gap between the through hole B and the through hole A increasing and decreasing is repeated, the cycle of pressure accumulation, jump, pressure relief and reset is realized, so that the communication gap between the through hole B and the through hole A continuously and autonomously oscillates between the two states of larger and smaller, the valve is not completely closed, but the opening degree periodically pulsates, a high-frequency pulsating gas flow is generated instead of a stable gas flow, the pulsating gas flow forms alternating pressure waves and high-speed jets in the cleaning channel, can more effectively penetrate the dead angle, and has alternating shearing and impact effect on the attached pollutants, the cleaning efficiency is much higher than that of constant blowing; meanwhile, the oscillation is completely generated by the internal dynamics of the mechanical structure, without the need for external complex control, the reliability is high, and self-adaptive efficient cleaning under the condition of continuous ventilation is realized.
[0021] 4、The present application is through the structure design of the shock ball assembly, the initial state, the ball is under the action of gravity, fall into the circular hole in the gap between the several hemispherical blocks, when the pulsating airflow, the periodic airflow pressure change drive ball complex movement in the vibration cavity, and irregular jumping and rotating under the guidance and collision of the hemispherical block, the random movement of the ball continues to disturb the airflow, the airflow with pulsating characteristics is further dispersed into the disturbed airflow with strong turbulence and micro vortex, can more effectively clean the dead angle that ordinary airflow can not reach, at the same time, the collision of the ball, the hemispherical block and the circular plate will produce slight high frequency mechanical vibration, and through the top ring block and the elastic ring pad, the mechanical vibration is transmitted to the tool shank body, forming the composite cleaning effect of pneumatic flushing and mechanical micro vibration, further stripping the firmly adhered pollutants, the whole process does not need extra energy input, only uses the energy of the pulsating airflow itself to drive, realizes the remarkable improvement of the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the overall structure schematic diagram of the hydraulic tool shank of the present application.
[0023] Figure 2 It is the cross-sectional structure schematic diagram of the present application.
[0024] Figure 3 It is the cross-sectional structure schematic diagram of the present application.
[0025] Figure 4 It is the actualization structure schematic diagram of the cleaning channel of the present application.
[0026] Figure 5 It is the split structure schematic diagram of the plug unit of the present application.
[0027] Figure 6 It is the overall structure schematic diagram of the machining tooling of the hydraulic tool shank of the present application.
[0028] Figure 7 It is the structure schematic diagram of the base and the cross seat of the present application.
[0029] Figure 8 It is the partial structure schematic diagram of the machining tooling of the hydraulic tool shank of the present application.
[0030] Figure 9 It is the partial structure cross-sectional schematic diagram of the machining tooling of the hydraulic tool shank of the present application.
[0031] Figure 10 It is the partial structure schematic diagram of the machining tooling of the hydraulic tool shank of the present application.
[0032] Figure 11 It is the structure cross-sectional schematic diagram of the present application. Figure 9
[0033] Figure 12 Fig. 2 is a schematic view of the A part structure of the present application. Figure 11
[0034] Figure 13 Fig. 4 is a schematic view of the split structure of the present application.
[0035] Figure 14 Fig. 5 is a schematic view of the partial structure of the present application.
[0036] Figure 15 Fig. 6 is a schematic view of the partial structure of the present application.
[0037] Figure 16 Fig. 7 is a schematic view of the B part structure of the present application. Figure 15
[0038] Figure 17 Fig. 8 is a schematic view of the split structure of the present application.
[0039] Fig. 9 is a schematic view of the split structure of the present application.
[0040] 1, handle body; 2, base; 3, cross seat; 4, clamping seat; 5, joint; 6, clamping wall assembly; 7, opening and closing assembly; 8, shock ball assembly;
[0041] 10, hydraulic adjusting unit; 11, expansion pressure cavity; 12, expansion sleeve; 13, helical groove A; 14, ring groove; 15, adjusting cavity; 16, flow channel A; 17, processing groove; 18, plug unit; 19, helical groove B; 110, flow channel B;
[0042] 181, screw rod; 182, screw block; 183, sealing ring;
[0043] 31, installation slot; 32, through groove; 33, empty groove A;
[0044] 41, circular groove A; 42, circular groove B; 43, cavity; 44, flow channel C; 45, processing cavity; 46, extension ring;
[0045] 431, medium column cavity; 432, sliding cavity A; 433, empty cavity; 444, air hole; 435, sliding cavity B; 436, inclined flow groove;
[0046] 60, limiting rod; 61, piston; 62, limiting ring column; 63, fixed seat; 64, spring A; 65, top ring block;
[0047] 610, through hole A; 611, sliding groove; 612, sliding hole; 613, spring groove; 614, empty groove B; 615, elastic strip;
[0048] 651, elastic ring pad; 652, installation groove;
[0049] 70. Through hole B; 71. Slide plate; 72. Slide shaft; 73. Spring B; 74. Slider; 75. Spring C; 76. Movable hole; 77. Locking guide groove; 78. Adjusting shaft; 79. Movable block; 710. Knob; 701. Top shaft;
[0050] 771. Partial threaded guide groove; 772. Arc guide groove;
[0051] 711. Movable cavity; 712. Movable column; 713. Shaft; 714. Horizontal guide groove; 715. Angled guide groove;
[0052] 81. Circular plate; 82. Ring plate; 83. Sphere; 84. Circular hole; 85. Hemispherical block. Detailed Implementation
[0053] like Figures 1 to 5 As shown, the present invention relates to a hydraulic tool holder, comprising a tool holder body 1, an expansion pressure chamber 11 at the bottom of the tool holder body 1, an expansion sleeve 12 fixed inside the expansion pressure chamber 11, a spiral groove A13 on the surface of the expansion pressure chamber 11, an annular groove 14 with a trapezoidal cross-section in the middle of the tool holder body 1, an adjustment chamber 15 on the annular groove 14, a hydraulic adjustment unit 10 threadedly connected to the adjustment chamber 15, the adjustment chamber 15 and the bottom of the spiral groove A13 are connected through a flow channel A16, both ends of the flow channel A16 are arc-shaped, a plurality of machining grooves 17 are formed in an annular equally spaced structure on the inclined surface at the top of the annular groove 14, one of the machining grooves 17 is formed with a thread groove, a plug unit 18 is threadedly connected to the thread groove, a spiral groove B19 is connected to the top of the spiral groove A13, and the spiral groove B19 and the thread groove are connected through a flow channel B110 with an arc-shaped top. The expansion pressure chamber 11, adjustment chamber 15, and hydraulic adjustment unit 10 of this invention are all prior art and will not be described in detail here. Through the above design, this invention enables the threaded groove, flow channel B110, spiral groove B19, spiral groove A13, flow channel A16, and adjustment chamber 15 to connect and form a cleaning channel. The cleaning medium can pass through the threaded groove, flow channel B110, spiral groove B19, spiral groove A13, and flow channel A16 in sequence and be output from the adjustment chamber 15, carrying away contaminants and impurities, ensuring the tool clamping accuracy and coaxiality, improving the service life of the hydraulic tool holder, and solving the technical problem of low service life of high-precision hydraulic tool holders.
[0054] In embodiments of the present invention, such as Figure 5 As shown, the plug unit 18 includes a screw 181, which is threadedly connected to a threaded groove. A screw block 182 is fixed on the screw 181, and a sealing ring 183 is embedded in the screw block 182 near the threaded groove.
[0055] like Figures 6 to 17As shown in the figure, a hydraulic tool holder processing tool suitable for processing the hydraulic tool holder includes a base 2, a cross seat 3, a plurality of clamping seats 4, a plurality of joints 5, and a plurality of clamping wall assemblies 6.
[0056] In embodiments of the present application, as shown in Figures 6 to 7 The cross seat 3 is fixedly arranged at the top end of the base 2, the top end of the cross seat 3 is provided with a plurality of arrangement slots 31 in a linear and equidistant structure, the bottom end of the arrangement slot 31 is provided with a through slot 32, the cross seat 3 is provided with two groups of empty slots A33 in a symmetrical structure, each group of empty slots A33 includes a plurality of empty slots A33 arranged in a linear and equidistant structure, and the empty slots A33 are arranged alternately with the arrangement slots 31.
[0057] In embodiments of the present application, as shown in Figure 6 , Figure 8 , Figure 9 , and Figure 10 The plurality of clamping seats 4 are fixedly arranged on the base 2, the top end of the clamping seat 4 is provided with a circular groove A41, the bottom end of the clamping seat 4 is provided with a circular groove B42, the diameter of the circular groove B42 is greater than the diameter of the circular groove A41, the clamping seat 4 is provided with a plurality of cavities 43 in a ring-shaped and equidistant structure, a plurality of clamping wall assemblies 6 are arranged on the plurality of cavities 43, a flow channel C44 is arranged on one side of the cavity 43, at least one processing cavity 45 is arranged on the clamping seat 4, and an extension ring 46 is fixedly arranged at the bottom end of the clamping seat 4. The extension ring 46 is movably connected with the arrangement slot 31. The cross seat 3 of the present application is fixedly connected with the base 2 by a plurality of bolts.
[0058] In embodiments of the present application, as shown in Figure 12 The cavity 43 includes a medium column cavity 431, a sliding cavity A432, a cavity 433, and a gas hole 444, the medium column cavity 431 is arranged at the bottom end of the clamping seat 4, the sliding cavity A432 is arranged on the surface of the circular groove B42, the cavity 433 is arranged at the bottom end of the sliding cavity A432 and is in communication with the medium column cavity 431, the medium column cavity 431, the sliding cavity A432, and the cavity 433 are arranged in an inclined structure, and the gas hole 444 is arranged on the surface of the clamping seat 4 and is in communication with the cavity 433.
[0059] The top surface of one of the medium column cavities 431 is provided with a sliding cavity B435, the sliding cavity B435 is arranged vertically with the sliding cavity A432, and the bottom side of the sliding cavity B435 is provided with an inclined flow groove 436, and the eccentric end of the inclined flow groove 436 is in communication with the sliding cavity B435.
[0060] In embodiments of the present application, as shown in Figure 8 and Figure 9 , and Figure 10 The plurality of joints 5 are fixedly arranged on the surface of the clamping seat 4, and the plurality of joints 5 are respectively in communication with the plurality of flow channels C44. The joint 5 of the present application is in communication with an external gas supply mechanism.
[0061] In embodiments of the present application, asFigure 11 and Figure 12 and Figure 13 As shown in FIGS. 6, 7 and 8, the clamping wall assembly 6 comprises a piston 61, a fixed seat 63 and a top ring block 65, the piston 61 is slidingly arranged on the medium column cavity 431, a limiting rod 60 is arranged on the piston 61, the two ends of the limiting rod 60 are fixedly connected with the two ends of the medium column cavity 431, a limiting ring column 62 is fixedly arranged at the bottom end of the piston 61, the fixed seat 63 is fixedly arranged at the bottom end of the medium column cavity 431, the piston 61 and the fixed seat 63 are elastically connected through a spring A 64, a through hole A610 is arranged at the center position of one of the pistons 61, the top ring block 65 is slidingly arranged on the sliding cavity A432 and is fixedly connected with the piston 61, the ring cavity of the top ring block 65 and the through hole A610 are communicated to form a medium passage, the medium passage is communicated with the cleaning passage, and the piston 61 is internally provided with an opening and closing assembly 7 for controlling opening and closing of the medium passage. Through the above arrangement, when the opening and closing assembly 7 controls the medium passage to be closed, the clamping wall assembly 6 forms a cylinder structure with the cavity 43, the plurality of top ring blocks 65 can resist the machining groove 17 of the tool shank body 1 to form a fixed structure, the external machining mechanism processes the tool shank body 1 by penetrating the machining cavity 45, and is used for adjusting the machining of the adjusting cavity 15. After the adjusting cavity 15 is machined, the opening and closing assembly 7 controls the medium passage to be opened, a certain gas pressure and the elastic force of the spring A 64 jointly act, so that the tool shank body 1 is kept at the initial position, the external gas supply mechanism continuously supplies gas, and the gas sequentially passes through the medium passage and the cleaning passage to blow and clean the expansion pressure cavity 11 and the adjusting cavity 15.
[0062] In the embodiment of the present application, as shown in FIGS. 6, 7 and 8, Figure 15 and Figure 16 As shown in FIGS. 6, 7 and 8, the clamping wall assembly 6 comprises a piston 61, a fixed seat 63 and a top ring block 65, the piston 61 is slidingly arranged on the medium column cavity 431, a limiting rod 60 is arranged on the piston 61, the two ends of the limiting rod 60 are fixedly connected with the two ends of the medium column cavity 431, a limiting ring column 62 is fixedly arranged at the bottom end of the piston 61, the fixed seat 63 is fixedly arranged at the bottom end of the medium column cavity 431, the piston 61 and the fixed seat 63 are elastically connected through a spring A 64, a through hole A610 is arranged at the center position of one of the pistons 61, the top ring block 65 is slidingly arranged on the sliding cavity A432 and is fixedly connected with the piston 61, the ring cavity of the top ring block 65 and the through hole A610 are communicated to form a medium passage, the medium passage is communicated with the cleaning passage, and the piston 61 is internally provided with an opening and closing assembly 7 for controlling opening and closing of the medium passage. Through the above arrangement, when the opening and closing assembly 7 controls the medium passage to be closed, the clamping wall assembly 6 forms a cylinder structure with the cavity 43, the plurality of top ring blocks 65 can resist the machining groove 17 of the tool shank body 1 to form a fixed structure, the external machining mechanism processes the tool shank body 1 by penetrating the machining cavity 45, and is used for adjusting the machining of the adjusting cavity 15. After the adjusting cavity 15 is machined, the opening and closing assembly 7 controls the medium passage to be opened, a certain gas pressure and the elastic force of the spring A 64 jointly act, so that the tool shank body 1 is kept at the initial position, the external gas supply mechanism continuously supplies gas, and the gas sequentially passes through the medium passage and the cleaning passage to blow and clean the expansion pressure cavity 11 and the adjusting cavity 15.
[0063] In the embodiment of the present application, as shown in FIGS. 6, 7 and 8, Figure 11 As shown in FIGS. 6, 7 and 8, the clamping wall assembly 6 comprises a piston 61, a fixed seat 63 and a top ring block 65, the piston 61 is slidingly arranged on the medium column cavity 431, a limiting rod 60 is arranged on the piston 61, the two ends of the limiting rod 60 are fixedly connected with the two ends of the medium column cavity 431, a limiting ring column 62 is fixedly arranged at the bottom end of the piston 61, the fixed seat 63 is fixedly arranged at the bottom end of the medium column cavity 431, the piston 61 and the fixed seat 63 are elastically connected through a spring A 64, a through hole A610 is arranged at the center position of one of the pistons 61, the top ring block 65 is slidingly arranged on the sliding cavity A432 and is fixedly connected with the piston 61, the ring cavity of the top ring block 65 and the through hole A610 are communicated to form a medium passage, the medium passage is communicated with the cleaning passage, and the piston 61 is internally provided with an opening and closing assembly 7 for controlling opening and closing of the medium passage. Through the above arrangement, when the opening and closing assembly 7 controls the medium passage to be closed, the clamping wall assembly 6 forms a cylinder structure with the cavity 43, the plurality of top ring blocks 65 can resist the machining groove 17 of the tool shank body 1 to form a fixed structure, the external machining mechanism processes the tool shank body 1 by penetrating the machining cavity 45, and is used for adjusting the machining of the adjusting cavity 15. After the adjusting cavity 15 is machined, the opening and closing assembly 7 controls the medium passage to be opened, a certain gas pressure and the elastic force of the spring A 64 jointly act, so that the tool shank body 1 is kept at the initial position, the external gas supply mechanism continuously supplies gas, and the gas sequentially passes through the medium passage and the cleaning passage to blow and clean the expansion pressure cavity 11 and the adjusting cavity 15.
[0064] In the embodiment of the present application, as shown in FIGS. 6, 7 and 8, Figure 13 and Figure 15As shown, the opening and closing assembly 7 includes a sliding plate 71, and a sliding shaft 72, the sliding plate 71 is arranged on the sliding groove 611, the sliding plate 71 is elastically connected with the spring groove 613 through the spring B73, the sliding shaft 72 is slidingly arranged on the sliding hole 612 and is fixedly connected with the sliding plate 71, a through hole B70 is formed in the sliding plate 71 and communicates with the through hole A610. In the initial state, the through hole B70 is separated from the through hole A610 under the elastic force of the spring B73, and the medium channel is in a completely closed state.
[0065] In the embodiment of the application, as shown in Figure 13 , and Figure 14 As shown, the opening and closing assembly 7 further includes a sliding block 74 and an adjusting shaft 78; the sliding block 74 is slidingly arranged in the sliding cavity B435, a top shaft 701 is fixedly arranged at one end of the sliding block 74 close to the sliding shaft 72, the top shaft 701 penetrates out of the sliding cavity B435 and movably cooperates with the sliding shaft 72, the sliding block 74 is elastically connected with the sliding cavity B435 at one end away from the sliding shaft 72 through the spring C75, a movable hole 76 is formed at one end of the sliding block 74 away from the sliding shaft 72, a plurality of partial locking guide grooves 77 are annularly and equidistantly arranged on the movable hole 76, the adjusting shaft 78 is rotatably arranged in the sliding cavity B435, a knob 710 is fixedly arranged at one end of the adjusting shaft 78 away from the sliding shaft 72 and penetrates out of the clamping seat 4, and the adjusting shaft 78 movably cooperates with the locking guide groove 77 through a movable block 79.
[0066] In the embodiment of the application, as shown in Figure 14 The locking guide groove 77 includes a partial thread guide groove 771, and an arc guide groove 772 is communicatively arranged at one end of the partial thread guide groove 771 close to the sliding shaft 72. Through the structural design of the opening and closing assembly 7, the movable block 79 is arranged on the arc guide groove 772 in the initial state, the sliding block 74 is locked, and the sliding of the sliding block 74 on the sliding cavity B435 is prevented, so that the fixing effect is ensured when the adjusting cavity 15 of the tool handle body 1 is machined, and the high gas pressure in the medium column cavity 431 is prevented from pushing the sliding block 74 to move, so that the sliding plate 71 moves.
[0067] In the embodiment of the application, as shown in Figure 16 A movable cavity 711 is formed at the bottom end of the sliding plate 71, a movable column 712 is movably arranged in the movable cavity 711, the movable column 712 movably cooperates with the top of the elastic strip 615, movable guide grooves are formed at both ends of the movable cavity 711, shaft bodies 713 are rotatably arranged at both ends of the movable column 712, the shaft bodies 713 movably connect with the movable guide grooves, and the movable guide grooves include horizontal guide grooves 714 and inclined guide grooves 715 are communicatively arranged at one end of the horizontal guide grooves 714 away from the sliding shaft 72. Through the further design of the opening and closing assembly 7, the knob 710 is rotated, the movable block 79 is separated from the locking guide groove 77, the high gas pressure in the medium column cavity 431 pushes the sliding block 74 to move, the top shaft 701 pushes the sliding shaft 72 and the sliding plate 71 to move, and the sliding plate 71 is separated from the through hole A610. Figure 6As shown, when the movable column 712 is in contact with the top of the elastic strip 615, the reaction force makes the movable column 712 drive the shaft body 713 to slide along the horizontal guide groove 714 until the shaft body 713 is moved along the horizontal guide groove 714 to be close to one end of the sliding shaft 72, at this time, the through hole B70 is partially communicated with the through hole A610, and due to the sufficient initial pressure, the movable column 712 makes the elastic strip 615 deform and pass through the elastic strip 615, so that the communication gap between the through hole B70 and the through hole A610 gradually increases, in the process, the external gas supply mechanism continuously supplies gas, however, at this time, the gas output in the medium column cavity 431 is greater than the gas supply amount of the external gas supply mechanism, the gas pressure in the medium column cavity 431 becomes smaller, and the reset force of the spring B73 and the spring C75 makes the sliding shaft 72 and the sliding plate 71 reset and move, so that the communication gap between the through hole B70 and the through hole A610 gradually becomes smaller, when the movable column 712 is in contact with the top of the elastic strip 615, the reaction force makes the movable column 712 drive the shaft body 713 to slide along the horizontal guide groove 714 to be close to one end of the sliding shaft 72, under the action of the elastic strip 615, the movement of the sliding plate 71 is blocked, the communication gap between the through hole B70 and the through hole A610 remains unchanged, and the gas output in the medium column cavity 431 is greater than the gas supply amount of the external gas supply mechanism, so that the gas pressure in the medium column cavity 431 becomes higher, until the gas pressure in the medium column cavity 431 reaches a certain degree, the movable column 712 can pass through the elastic strip 615, the communication gap between the through hole B70 and the through hole A610 is instantaneously increased, a gas flow peak value is formed, and the above process of increasing and decreasing the communication gap between the through hole B70 and the through hole A610 is repeated, so that the communication gap between the through hole B70 and the through hole A610 continuously and autonomously oscillates between the two states of being larger and being smaller, the valve is not completely closed, but the opening degree periodically pulsates, a high-frequency pulsating gas flow is generated instead of a stable gas flow, the pulsating gas flow forms alternating pressure waves and high-speed jets in the cleaning channel, can more effectively penetrate the dead angle, and has alternating shearing and impact effect on the attached pollutants, so that the cleaning efficiency is much higher than that of constant blowing; meanwhile, the oscillation is completely generated by the internal dynamics of the mechanical structure, without the need for external complex control, and the reliability is high, so that the self-adaptive and efficient cleaning under the condition of continuous ventilation is realized, the degradation speed of the hydraulic oil is reduced, and the service life of the high-precision hydraulic tool shank is ensured.
[0068] In the embodiment of the application, as Figure 17As shown, the vibration ball assembly 8 includes two circular plates 81 arranged in an upper and lower structure in the mounting groove 652, the two circular plates 81 are fixedly connected through a ring plate 82, the ring plate 82 and the two circular plates 81 form a vibration cavity with a gap, a plurality of spheres 83 are arranged on the vibration cavity, a plurality of circular holes 84 are formed on the two circular plates 81, the spheres 83 are movably matched with the circular holes 84, a plurality of semisphere blocks 85 are uniformly arranged on the opposite ends of the two circular plates 81, the plurality of semisphere blocks 85 are staggered with the plurality of circular holes 84, and the semisphere blocks 85 are movably matched with the spheres 83. Figure 7 As shown, in the initial state, the spheres 83 fall into the circular holes 84 in the gap between the semisphere blocks 85 below under the action of gravity, when the pulsating airflow passes, the periodic change of airflow pressure drives the spheres 83 to produce complex motion in the vibration cavity, and the spheres 83 jump and rotate irregularly under the guidance and collision of the semisphere blocks 85, the random motion of the spheres 83 continuously disturbs the airflow, the airflow with the pulsation characteristics is further scattered into the disturbed airflow with strong turbulence and micro-vortex, and the dead angle that is difficult to be reached by ordinary airflow can be more effectively cleaned; meanwhile, the collision between the spheres 83 and the semisphere blocks 85 and the circular plates 81 generates slight high-frequency mechanical vibration, and the vibration is transmitted to the shank body 1 through the top ring block 65 and the elastic ring pad 651, so that the combined cleaning effect of pneumatic flushing and mechanical micro-vibration is formed, and the firmly adhered pollutants are further stripped, and the whole process does not need additional energy input, only uses the energy of the pulsating airflow itself to drive, and the cleaning effect is significantly improved.
[0069] Working principle: the embodiment provides a hydraulic tool shank and a machining tool thereof, when the hydraulic tool shank is produced, the shank body 1 is internally provided with a complete cleaning channel, cleaning medium can be injected from the thread groove, sequentially flows through each flow channel, and finally flows out from the adjusting cavity 15, and carries away pollutants along the way, so that the internal dead angle that is difficult to be reached by the traditional structure is thoroughly cleaned, and the sealing performance of the hydraulic system and the clamping accuracy are avoided from being affected by impurities;
[0070] When the machining tool of the hydraulic tool shank is used in the machining mode, in the initial state, the sliding plate 71 of the opening and closing assembly 7 is reset under the action of the spring B73, the through hole B70 is separated from the through hole A610, and the medium channel is completely closed, at this time, the piston 61 of the clamping wall assembly 6 and the medium column cavity 431 of the cavity 43 form a cylinder structure, high-pressure gas is introduced into the flow channel C44 through the joint 5, the gas enters the medium column cavity 431 to drive the piston 61 to slide along the limiting rod 60, the spring A64 is compressed, and then the top ring block 65 moves centripetally along the sliding cavity A432, the elastic ring pad 651 at the top end of the top ring block 65 abuts against the machining groove 17 of the shank body 1, and a stable fixed structure is formed. The machining end of the external machining mechanism passes through the machining cavity 45 of the clamping seat 4, and can precisely machine parts such as the adjusting cavity 15.
[0071] When the hydraulic tool holder is used in the cleaning mode, the rotating knob 710 drives the adjusting shaft 78 to rotate, so that the movable block 79 is separated from the arc guide groove 772 of the locking guide groove 77, the locking of the sliding block 74 is released, the high-pressure gas in the medium column cavity 431 pushes the sliding block 74 to move and compress the spring C75, the top shaft 701 pushes the sliding shaft 72 and the sliding plate 71 to slide to the spring groove 613, the through hole B70 is gradually communicated with the through hole A610, the medium channel is opened, the external gas supply mechanism continuously supplies gas, and the gas enters the cleaning channel of the tool holder body 1 through the medium channel, so that the inner cavity of the tool holder body 1 is cleaned.
[0072] The embodiments of the present application are disclosed, but are not limited to the embodiments, and the ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, which are within the protection scope of the present application.
Claims
1. A hydraulic tool holder characterized by, The utility model provides a kind of cutting tool holder, including shank body (1), the bottom of shank body (1) is equipped with expansion pressure chamber (11), expansion sleeve (12) is fixed in expansion pressure chamber (11) inside, spiral groove A (13) is opened in the surface of expansion pressure chamber (11), the middle of shank body (1) is equipped with annular groove (14) with trapezoidal cross section, adjusting chamber (15) is opened in the upper annular groove (14), hydraulic adjusting unit (10) is threadedly connected in the upper adjusting chamber (15), adjusting chamber (15) is connected with the bottom of spiral groove A (13) by flow channel A (16), both ends of flow channel A (16) are arc structure, the top of annular groove (14) is equipped with a plurality of machining grooves (17) in annular equidistant structure, threaded groove is opened in one of machining grooves (17), plug unit (18) is threadedly connected in threaded groove, spiral groove B (19) is connected in the top of spiral groove A (13), spiral groove B (19) is connected with plug unit (18) by flow channel B (110) of top arc structure; The threaded groove, the flow channel B (110), the spiral groove B (19), the spiral groove A (13), the flow channel A (16), and the adjusting chamber (15) are connected to form a cleaning channel.
2. A machining tool for a hydraulic tool holder, which is suitable for machining the hydraulic tool holder according to claim 1, characterized in that, Including base (2), base (2) top is fixed with horizontal seat (3), the top of horizontal seat (3) is fixed with a plurality of clamping seats (4), a plurality of cavities (43) are opened in the clamping seat (4) in annular equidistant structure, clamping wall assembly (6) is arranged on the cavity (43), flow channel C (44) is communicated on one side of the cavity (43), a plurality of joints (5) are fixed on the surface of the clamping seat (4), and a plurality of flow channels C (44) are communicated with a plurality of joints (5) respectively. The clamping wall assembly (6) includes a piston (61), a fixed seat (63), and a top ring block (65), the piston (61) and the fixed seat (63) are elastically connected by a spring A (64), one of the pistons (61) is provided with a through hole A (610) at the center position, the annular cavity of the top ring block (65) and the through hole A (610) are connected to form a medium channel, and the medium channel is connected to the cleaning channel. When the opening and closing assembly (7) controls the medium channel to be closed, the clamping wall assembly (6) and the cavity (43) form a cylinder structure for adjusting the machining of the adjusting chamber (15). When the opening and closing assembly (7) controls the medium channel to be opened, the gas pressure and the elastic force of the spring A (64) jointly act, so that the shank body (1) is kept in the initial position, and the expansion pressure chamber (11) and the adjusting chamber (15) are cleaned.
3. The machining tool of claim 2, wherein The top end of the transverse seat (3) is provided with a plurality of installation slots (31) in linear equidistant structure, the bottom end of the installation slot (31) is provided with a through slot (32), the transverse seat (3) is provided with two groups of empty slots A (33) in symmetrical structure, each group of empty slots A (33) includes a plurality of linear equidistant structures, and the empty slots A (33) are arranged alternately with the installation slots (31). The top end of the clamping seat (4) is provided with a circular groove A (41), the bottom end of the clamping seat (4) is provided with a circular groove B (42), the diameter length of the circular groove B (42) is greater than that of the circular groove A (41), at least one machining cavity (45) is arranged on the clamping seat (4), and the bottom end of the clamping seat (4) is fixedly provided with an extension ring (46), the extension ring (46) is movably connected with the installation slot (31).
4. The machining tool of claim 3, wherein The cavity (43) includes a medium column cavity (431), a sliding cavity A (432), a hollow cavity (433) and an air hole (444), the medium column cavity (431) is arranged at the bottom end of the clamping seat (4), the sliding cavity A (432) is arranged on the surface of the circular groove B (42), the hollow cavity (433) is arranged at the bottom end of the sliding cavity A (432) and is connected with the medium column cavity (431), the medium column cavity (431), the sliding cavity A (432) and the hollow cavity (433) are arranged in inclined structure, and the air hole (444) is arranged on the surface of the clamping seat (4) and is connected with the hollow cavity (433). The top surface of one of the medium column cavities (431) is provided with a sliding cavity B (435), the sliding cavity B (435) is arranged vertically with the sliding cavity A (432), and the bottom side of the sliding cavity B (435) is provided with an inclined flow groove (436), and the eccentric end of the inclined flow groove (436) is connected with the sliding cavity B (435).
5. The machining tool of claim 4, wherein The piston (61) is slidably arranged on the medium column cavity (431), the limit rod (60) is arranged on the piston (61), the limit rod (60) is fixedly connected with the two ends of the medium column cavity (431), the limit ring column (62) is fixedly arranged at the bottom end of the piston (61), the fixed seat (63) is fixedly arranged at the bottom end of the medium column cavity (431), and the top ring block (65) is slidably arranged on the sliding cavity A (432) and is fixedly connected with the piston (61).
6. The machining tool of claim 4, wherein The sliding slot (611) is arranged in the piston (61) corresponding to the through hole A (610), the sliding hole (612) is arranged at one end of the sliding slot (611) close to the sliding cavity B (435), the spring slot (613) is arranged at the other end of the sliding slot (611) away from the sliding cavity B (435), the hollow slot B (614) is arranged at the bottom end of the sliding slot (611), the elastic strip (615) is fixedly arranged on the hollow slot B (614), and the top section of the elastic strip (615) is semicircular.
7. The machining tool of claim 6, wherein The opening and closing assembly (7) comprises a sliding plate (71) and a sliding shaft (72), the sliding plate (71) is arranged on the sliding groove (611), the sliding plate (71) is elastically connected with the spring groove (613) through a spring B (73), the sliding shaft (72) is slidingly arranged on the sliding hole (612) and is fixedly connected with the sliding plate (71), a through hole B (70) is formed in the sliding plate (71), and the through hole B (70) is in communication with the through hole A (610).
8. The machining tool of claim 7, wherein, The opening and closing assembly (7) further comprises a sliding block (74) and an adjusting shaft (78); the sliding block (74) is slidingly arranged on the sliding cavity B (435), a top shaft (701) is fixedly arranged on one end of the sliding block (74) close to the sliding shaft (72), the top shaft (701) penetrates out of the sliding cavity B (435) and movably cooperates with the sliding shaft (72), one end of the sliding block (74) away from the sliding shaft (72) is elastically connected with the sliding cavity B (435) through a spring C (75), a movable hole (76) is formed in one end of the sliding block (74) away from the sliding shaft (72), a plurality of part locking guide grooves (77) are annularly and equidistantly arranged on the movable hole (76), the adjusting shaft (78) is rotatably arranged on the sliding cavity B (435), one end of the adjusting shaft (78) away from the sliding shaft (72) penetrates out of the clamping seat (4) and is fixedly provided with a knob (710), and the adjusting shaft (78) movably cooperates with the locking guide groove (77) through a movable block (79). The locking guide groove (77) comprises a part threaded guide groove (771), and an arc guide groove (772) is communicatively arranged on one end of the part threaded guide groove (771) close to the sliding shaft (72).
9. The machining tool of claim 7, wherein, A movable cavity (711) is formed in the bottom end of the sliding plate (71), a movable column (712) is movably arranged in the movable cavity (711), the movable column (712) movably cooperates with the top part of the elastic strip (615), movable guide grooves are formed in both ends of the movable cavity (711), shaft bodies (713) are rotatably arranged on both ends of the movable column (712), the shaft bodies (713) movably connect with the movable guide grooves, and the movable guide grooves comprise horizontal guide grooves (714) and inclined guide grooves (715) which are communicatively arranged on one end of the horizontal guide grooves (714) away from the sliding shaft (72).
10. The machining tool of claim 2, wherein, An embedding groove is formed in the top end of the top ring block (65), an elastic ring pad (651) is embedded in the embedding groove, an installation groove (652) is formed in the top end inner surface of the top ring block (65), and a shock ball assembly (8) is arranged in the installation groove (652). The shock ball assembly (8) comprises two circular plates (81), which are arranged in an up-down structure in the mounting groove (652), and are fixedly connected through a ring plate (82). The ring plate (82) and the two circular plates (81) form a shock cavity with a gap. A plurality of spherical bodies (83) are arranged on the shock cavity. A plurality of circular holes (84) are formed in each of the two circular plates (81). The spherical bodies (83) are movably connected with the circular holes (84). A plurality of semispherical blocks (85) are uniformly arranged at opposite ends of the two circular plates (81). The semispherical blocks (85) and the circular holes (84) are arranged alternately. The semispherical blocks (85) are movably connected with the spherical bodies (83).
Citation Information
Patent Citations
Hydraulic clamping multipurpose tool with replaceable periphery blades
CN107552882A
Hydraulic pressure inflation clamping structure
CN207431308U