CN117047525A - Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool - Google Patents
Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool Download PDFInfo
- Publication number
- CN117047525A CN117047525A CN202210477816.8A CN202210477816A CN117047525A CN 117047525 A CN117047525 A CN 117047525A CN 202210477816 A CN202210477816 A CN 202210477816A CN 117047525 A CN117047525 A CN 117047525A
- Authority
- CN
- China
- Prior art keywords
- claw
- pull claw
- self
- hsk
- inner diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 title claims abstract description 299
- 230000002787 reinforcement Effects 0.000 title claims abstract description 81
- 230000003044 adaptive effect Effects 0.000 title claims description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010586 diagram Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000006872 improvement Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 13
- 230000009471 action Effects 0.000 description 9
- 230000003068 static effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 241001442234 Cosa Species 0.000 description 2
- 244000089409 Erythrina poeppigiana Species 0.000 description 2
- 235000009776 Rathbunia alamosensis Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
- B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
- B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
- B23Q2003/155404—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising a single gripper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
Self-locking reinforcement type pulling claw applied to high-speed spindle adaptation HSK tool system of numerical control machine tool, the self-locking reinforcement type pulling claw structure is divided into eight parts: the device comprises a pull claw shaft, six-petal pull claw sheets, an annular spring, a pull claw separation ring, a guide copper nut, a U-shaped oil seal, a through hole non-head inner hexagonal bolt and a wave spring ring; compared with the prior art, the invention has the advantages that: when the pull claw is in a broaching state, the whole self-locking reinforcement type pull claw and the HSK knife handle are in a self-locking wedging state, so that excellent high-speed rotation dynamic balance characteristics can be obtained, the self-locking reinforcement type pull claw has reinforcement function, a disc spring of a broaching mechanism can be reduced, the oil pressure of a loose knife can be reduced, the main shaft structure can be simpler, and a main shaft high-precision bearing can be effectively protected; the self-locking reinforcement type pull claw can be effectively matched with an HSK cutter system, and can effectively assist a domestic high-speed spindle of a high-end numerical control machine tool to apply a high-speed cutting technology.
Description
Technical Field
The invention relates to the field of machine tool parts, in particular to a self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool.
Background
High-speed cutting is mainly applied to rotary tools, and requires a higher rotational speed of a machine tool spindle. When the spindle rotation speed exceeds 10000r/min, the large end of a traditional 7:24 spindle taper hole of the adaptive BT cutter system can be enlarged, so that the cutter can axially float, and the spindle can lock a taper shank, so that the machining performance of the traditional BT cutter system is difficult to meet the requirement of high-speed cutting. Currently, high-speed cutting is widely applied to a Germany HSK (German Hohl Shaft Kegel abbreviation) cutter system, an American KM cutter system, a Japanese NC5 cutter system, a BIG-PLUS cutter system and the like, which belong to two-sided constraint cutter handles. Most of the high-speed spindles of imported high-end machine tools in China are provided with HSK cutter systems, and the HSK cutter systems have the following advantages:
1) The combination mode of the conical surface and the over-positioning end surface is adopted, so that the combination rigidity can be effectively improved, the vibration of a cutter system during high-speed machining is reduced, the service life of a cutter is prolonged, and the axial positioning error can be completely eliminated.
2) Because the taper part is short in length and light in weight after adopting a hollow structure, the automatic tool changing action is quick, and the ATC is facilitated to be high-speed.
3) Adopts 1: taper of 10, and 7: the 24 conicity is shorter than the conicity, the wedge effect is better, the machining center has stronger torsion resistance, and the micro displacement generated by vibration can be restrained.
4) Adopts 1: the taper of 10 is far smaller than 7:24 conicity, has comparatively high repeated installation accuracy.
The advantages and developments of high-speed cutting technology illustrate that high-speed cutting is a relative concept and is constantly changing with the progress of the era. It is generally considered that the speed of high-speed cutting or ultra-high-speed cutting is 5 to 10 times that of ordinary cutting. Studies have shown that: with the improvement of the cutting speed, the cutting force can be reduced by more than 15-30%, most of cutting heat is taken away by the cutting chips, the quality of the processed surface can be improved by 1-2 levels, the production efficiency is improved, and the manufacturing cost can be reduced by 20-40%. Therefore, the meaning of high-speed cutting is not only to obtain higher surface cutting quality, but also to improve the production efficiency and greatly reduce the manufacturing cost, and the application of the high-speed cutting technology is an important link for improving the water of the national machining manufacturing technology. The high-speed cutting technology is mainly divided into two aspects, namely a high-speed cutting tool technology, comprising a tool material, a tool shank and tool holder system, a tool dynamic balance technology, a high-speed cutting database technology, a detection and monitoring system and the like; on the other hand, the technology of the high-speed numerical control machine tool comprises static and dynamic thermal characteristics of the whole machine tool structure, an electric spindle, a linear motor feeding system, high-speed and high-acceleration performance of a numerical control and servo system, a bearing lubrication system, a cutter cooling system and the like. In recent years, china has deeper knowledge on the high-speed cutting technology, the imported part of numerical control machine tools and machining centers can meet the requirement of high-speed cutting machining, but manufacturers of high-end numerical control machine tools capable of self-producing and applying the high-speed cutting technology in China are extremely rare, and even though the manufacturers of the high-end numerical control machine tools exist in China, the high-speed spindle capable of adapting to a high-speed cutting tool system is mostly imported. Development of high-speed cutting technology is a systematic engineering, and all aspects have been subject to self-made efforts and innovations.
For the application of the HSK tool system, a spindle broach mechanism which is matched with the HSK tool system is developed, and the most main accessory of the spindle broach mechanism is a pulling claw. The patent application of pulling claw adapting to the HSK tool system is developed in China, but the simple type HSK pulling claw is simple and convenient for processing the pulling claw, but the design of the pulling claw can be matched with the assembly of the HSK tool system and the high-speed main shaft, so that the high-speed cutting processing performance is excellent, and the production technology of a high-end precision machine tool in China can be assisted to obtain great progress.
Therefore, an adaptive HSK tool system can maintain a stable self-locking state and a reinforcement type pull claw is needed to be researched.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-locking reinforcement type pull claw with good dynamic balance for being applied to a high-speed spindle of a numerical control machine tool by matching with an HSK (high speed tool) cutter system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the self-locking reinforcement type pulling claw structure has the self-locking reinforcement function in a broaching state and can be matched with an HSK cutter system, and the self-locking reinforcement type pulling claw structure is divided into eight parts: the device comprises a pull claw shaft, six-petal pull claw sheets, an annular spring, a pull claw separation ring, a guide copper nut, a U-shaped oil seal, a through hole non-head inner hexagonal bolt and a wave spring ring; the inner diameter of the pull claw shaft is a through hole, the front end of the inner diameter is provided with a U-shaped oil seal, the outer diameter of the guide copper nut is provided with threads, the guide copper nut is in threaded connection with a hole at the front end of the inner diameter of the pull claw shaft, the middle of the inner diameter of the pull claw shaft is provided with internal thread threads, the through hole is provided with a headless internal hexagonal bolt, six-petal pull claw pieces are respectively provided with three parts U, v and w in appearance, the middle is provided with a groove v, bosses at the outer diameters of the two ends are respectively U and w, the boss w at the right outer diameter is provided with an arc groove, an annular spring is assembled, the six-petal pull claw pieces are hooped and wound around the outer diameter of the pull claw shaft by the annular spring, the right end face of the six-petal pull claw pieces is radially provided with a groove, the six-petal pull claw pieces separated by a pull claw separating ring are evenly distributed on the outer diameter of the pull claw shaft, the inner diameter of the pull claw separating ring is provided with a through hole, the middle of the inner diameter is provided with a step, the inner diameter hole with a large inner diameter hole on the right of the step is internally provided with a spring ring, the contact inclined plane H of the pull claw shaft and the included angle with the axial direction is a small angle self-locking angle; the contact inclined plane G of the pull claw piece and the inner diameter step of the HSK knife handle has an included angle b with the radial direction, and the included angle b is smaller than 45 degrees; the utility model provides a broach mechanism of self-locking reinforcement formula pulling claw application example, is taut HSK handle of a knife application state structure as follows: the inside diameter hole of the main shaft rotating shaft core is sequentially provided with an HSK handle, a self-locking reinforcement type pull claw, a pull claw connecting shaft and a pull cutter rod, the front taper hole of the main shaft rotating shaft core is provided with the HSK handle, the self-locking reinforcement type pull claw is internally supported and tensioned by the HSK handle, the outer diameter of the left end of the pull claw connecting shaft is in threaded connection with the middle thread of the inner diameter of the pull claw shaft of the self-locking reinforcement type pull claw, the outer diameter of the left end of the pull cutter rod is in threaded connection with the inner diameter thread of the right end of the pull claw connecting shaft, the pull cutter rod pulls the pull claw connecting shaft towards the rear end of the main shaft rotating shaft core, the pull claw connecting shaft is tensioned by the self-locking reinforcement type pull claw, the middle groove v is clamped on the inner diameter boss d of the main shaft rotating shaft core, the inner diameter step surface E of the main shaft rotating shaft core is in contact with the step surface of the right outer diameter boss w of the six-valve pull claw, the right end surface of the waveform spring ring of the self-locking reinforcement type pull claw is in contact with the inner diameter step surface I of the main shaft rotating shaft core, the inner diameter of the HSK handle is provided with a raised central water guide rod, and the water guide rod penetrates through the guide copper guide nut to be inserted into the self-locking reinforcement type pull claw sealing U-shaped pull claw guide hole, and the outer diameter of the pull claw guide shaft is sealed.
The invention has the advantages that:
when the self-locking reinforcement type pulling claw is in a broaching state, a left outer diameter boss u of a six-petal pulling claw piece is clamped between a pulling claw shaft bevel angle surface and an inner diameter step surface of an HSK cutter handle, the left step surface of a right outer diameter boss w of the six-petal pulling claw piece is axially clamped by an inner diameter step surface E of a main shaft rotating shaft core, and the self-locking reinforcement type pulling claw is in a self-wedging self-locking stable state, and the HSK cutter handle taper shank and the main shaft rotating shaft core 1: the pull contact surface of the 10 taper hole is also in small-angle self-wedging contact, the whole self-locking reinforcement pull claw and the HSK knife handle are in a self-locking wedging state, and six pull claw sheets are uniformly separated by a pull claw separating ring, so that excellent high-speed rotation dynamic balance characteristics can be obtained, and the requirement of dynamic balance of a high-speed cutting technology is met;
when the self-locking reinforcement type pulling claw is in a broaching state, the self-locking reinforcement type pulling claw has reinforcement function, the disc spring group compressed by the spindle broaching mechanism pulls the pulling rod towards the rear end of the spindle rotating shaft core, the cutter rod is sequentially pulled to the pulling claw connecting shaft through acting force and reacting force, the pulling claw connecting shaft is pulled to the pulling claw shaft, the pulling claw shaft acts on the pulling force of six-valve pulling claw sheets moving towards the locking cutter direction and corresponds to wedge wedging action, the pulling force of the six-valve pulling claw sheets on the HSK cutter handle is several times of the pulling force of the pulling rod on the pulling claw connecting shaft and the pulling claw sheets on the six-valve pulling claw sheets, the pulling force of the six-valve pulling claw sheets on the HSK cutter handle is enough to enable the front taper hole of the spindle rotating shaft core to elastically deform, the HSK cutter handle axially moves towards the rear end of the spindle slightly, the flange surface of the HSK cutter handle contacts with the front end surface of the spindle rotating shaft core, and two surfaces of the HSK cutter handle system are contacted, and the following advantages are achieved, 1; the broaching force of the pulling claw to the tool handle is equal, and the number of disc springs and the length of the broaching rod can be reduced by using the broaching mechanism of the pulling claw, so that the total length of the main shaft can be reduced, the main shaft structure is more compact, and the broaching mechanism of the pulling claw is convenient to apply to the main shaft of the multi-axis linkage high-end numerical control machine tool with compact structure; 2; the oil pressure of the main shaft cutter loosening oil cylinder can be reduced, so that the whole machine tool oil pressure system does not need to maintain high-pressure operation, electric power energy sources are saved, loss is reduced, in addition, the volume of the cutter loosening oil cylinder can be reduced, and the cutter loosening oil cylinder is convenient to apply to a main shaft of a multi-shaft linkage high-end numerical control machine tool with a compact structure; 3, a step of; the smaller the acting force of the cutter loosening action is, the more favorable the service life of a precise bearing of a main shaft is prolonged, the more favorable the stability of the high-speed rotation of the main shaft is, the cutter loosening signal is used for controlling an oil hydraulic cylinder to act by an electromagnetic valve, the piston of the oil hydraulic cylinder moves to be pulled to the rear end surface of a cutter pulling rod, a compression belleville spring deforms to push the cutter pulling rod to act on a claw shaft to move towards the cutter loosening direction, the cutter loosening action is completed, the supporting point of the deformation force of the compression belleville spring is the outer edge of the belleville spring clamped on the inner diameter step of a rotary shaft core of the main shaft, the supporting point of the cutter loosening force is the rotary shaft core of the main shaft in sequence through acting force and reaction force, the inner ring of the angular contact shaft bearing, the precise steel ball of the angular contact bearing and the outer ring of the angular contact bearing of the main shaft are supported by a main shaft body, the cutter loosening cylinder is also arranged on the main shaft body to complete the cutter loosening action, the closed circulation of acting force and reaction force is that the larger the acting force of the actual tool loosening action is, the larger the damage to the spindle precision bearing is, the smaller the acting force of the tool loosening action is, the longer the service life of the spindle precision bearing is facilitated, the stability of high-speed rotation of the spindle is facilitated, and the premise of the advantage is that a floating tool loosening mechanism is not additionally arranged on a broach mechanism (when the floating tool loosening mechanism is a spindle tool loosening mechanism, the piston of a tool loosening cylinder is movably contacted with the rear end face of a broach rod of the broach mechanism, and after the reaction force enables a tool loosening cylinder shell to be connected to a spindle rotating shaft core, the broach rod is pushed to loosen the tool, and the tool loosening method is that no reaction force acts on the spindle bearing), the additionally arranged floating tool loosening mechanism can complicate the spindle structure and restrict the requirement that the spindle of a multi-spindle linkage high-end machine tool needs to be intensive electric spindles, and the tool loosening cylinder and the rotating joint is led into a high-pressure cutting water structure; 4, when the main shaft broaching state is adopted, the deformation of the disc spring of the broach mechanism is smaller than that of a common pulling claw, so that the service life of the broach mechanism is prolonged;
thirdly, the self-locking reinforcement type pull claw has the advantages that the action of loosening the cutter is rapid, the cutter loosening stroke is short, the cutter handle can be instantly switched from a cutter pulling self-locking stable state to a cutter loosening state, the cutter can be quickly replaced, the processing auxiliary time is saved, the processing efficiency of a machine tool is improved, and the experimental verification is carried out;
the self-locking reinforcement type pulling claw can effectively keep the stable state that the HSK cutter handle is still arranged in the taper hole of the main shaft rotating shaft core after the cutter loosening is completed, the pulling claw shaft moves forward when the cutter loosening is completed, the six-valve pulling claw pieces are loosened from the wedging state, the pulling claw shaft continues to move forward to push the HSK cutter handle slightly to move forward, the two-side constraint state of the HSK cutter handle is released, but the six-valve pulling claw pieces still take the inner diameter step surface E of the main shaft rotating shaft core as a supporting point, the wavy spring ring pushes the push-pull claw separating ring by taking the inner diameter step surface I of the main shaft rotating shaft core as a supporting point, the separating ring pushes the six-valve pulling claw pieces to be in an open state, the HSK cutter handle can still be clamped, and the stability of quick automatic cutter changing is ensured.
Fifthly, the self-locking reinforcement type pull claw can guide high-pressure cutting water, a high-pressure cooling water cooling processing cutter is conveniently added in the application condition of a high-speed cutting technology, a raised central water outlet guide rod is arranged at the inner diameter of the HSK cutter handle, and when the cutter is installed, the central water outlet guide rod of the HSK cutter handle is inserted into a pull claw shaft inner diameter hole of the self-locking reinforcement type pull claw through a guide copper nut, and a U-shaped oil seal is in sealing contact with the outer diameter of the guide rod.
The self-locking reinforcement type pull claw can be conveniently installed on a spindle broach mechanism in an inner diameter hole of a spindle rotating shaft core, during installation, six-valve pull claw sheets and pull claw shafts are separated, the six-valve pull claw sheets are radially contracted by annular spring hoops, pull claw separating rings are separated and still integrated, the six-valve pull claw sheets and the annular springs, the pull claw separating rings and wave-shaped spring rings are plugged into the inner diameter hole of the spindle rotating shaft core, until a boss w with the right outer diameter of the six-valve pull claw sheets and the annular springs are clamped between E, I inner diameter step surfaces of the spindle rotating shaft core, then the pull claw shafts pass through a central gap of the six-valve pull claw sheets, the six-valve pull claw sheets are radially spread, until a middle groove v of the six-valve pull claw sheets is clamped on an inner diameter boss d of the spindle rotating shaft core, the outer diameter of the pull claw shafts is provided with processing symmetrical bayonet positions, a rotatable pull claw shaft is clamped by an opening wrench, the inner diameter middle screw thread of the pull claw connecting shaft can be connected with a left outer diameter screw thread of the upper pull claw connecting shaft, after the self-locking reinforcement type pull claw shaft is adjusted to a proper position, a cutter handle is rotated, a hexagon spanner is used, a hexagon bolt is not screwed into a through hole, and a self-locking reinforcement bolt is not easy to be installed, and the self-locking reinforcement type pull claw bolt is not easy to be installed.
The conclusion is that the self-locking reinforcement type pull claw can be effectively matched with an HSK cutter system, and can effectively assist a domestic high-speed spindle of a high-end numerical control machine tool to apply a high-speed cutting technology.
As an improvement, the contact inclined plane H of the six-petal pulling claw piece and the pulling claw shaft has an included angle a with the axial direction, and a is a small-angle wedging self-locking angle.
As improvement, the right end face of the six-petal pulling claw piece is radially provided with a groove which is matched with the radial bulge of the left end face of the pulling claw separating ring, and the pulling claw separating ring separates the six-petal pulling claw pieces and is uniformly distributed on the outer diameter of the pulling claw shaft.
As an improvement, the inner diameter of the pull claw separating ring is a through hole, a step is arranged in the middle of the inner diameter, and a wavy spring ring is assembled in the inner diameter hole with the large right side of the step.
As an improvement, the inner diameter of the pull claw shaft is a through hole, the front end of the inner diameter is provided with a U-shaped oil seal and a guide copper nut, the outer diameter of the copper guide nut is threaded, the copper guide nut is in threaded connection with a front end hole of the inner diameter of the pull claw shaft, the middle of the inner diameter of the pull claw shaft is provided with an inner tooth thread, and the pull claw shaft is provided with a through hole headless inner hexagon bolt.
Drawings
Fig. 1 is a front view of a self-locking reinforcement type pull claw structure adapted to an HSK cutter system.
FIG. 2 is a C-C cross-sectional view of a self-locking reinforcement type pull jaw structure adapted to an HSK tool system.
Fig. 3 is a block diagram of a broaching mechanism using self-locking reinforcement type pulling claws.
Fig. 4 is a partially enlarged view showing a structure of a broaching mechanism using a self-locking reinforcement type pulling jaw in a broaching state.
Fig. 5 is a schematic view of a broach mechanism using a self-locking reinforcement type pulling claw in a loose state, and a partially enlarged view.
Fig. 6 is a diagram showing the analysis of the force applied to the jaw shaft by the jaw mechanism separated from the structure diagram of the state of the broaching tool by the self-locking reinforcement type jaw.
Fig. 7 is a diagram showing the force analysis of a jaw piece separated from a broaching mechanism using a self-locking reinforcement type jaw in a broaching state.
Fig. 8 is a force analysis diagram of the HSK handle separated from the broach state structure diagram of the broach mechanism using the self-locking reinforcement type broach.
Fig. 9 is a stress analysis diagram and an enlarged stress analysis diagram of an HSK handle separated from a broach state structure diagram of a broach mechanism using a self-locking reinforcement type broach.
As shown in fig. 1: 1. a pull claw shaft, 2, six-petal pull claw sheets, 3, an annular spring, 4, a pull claw separating ring, u, left outer diameter boss, v, middle groove, w, right outer diameter boss;
as shown in fig. 2: 5. the guide copper nut, 6, U-shaped oil seal, 7, a through hole non-head inner hexagonal bolt, 8, a wave spring ring, H, a contact inclined plane of a pull claw piece and a pull claw shaft, G, a contact inclined plane of a pull claw piece and an inner diameter step of an HSK handle, a contact inclined plane H of a pull claw piece and a pull claw shaft, an axial included angle, b, a contact inclined plane G of a pull claw piece and an inner diameter step of the HSK handle, and a radial included angle;
as shown in fig. 4: 9. the tool comprises an HSK tool handle, 10, a main shaft rotating shaft core, 11, a pull claw connecting shaft, 12, a pull tool rod, d, a main shaft rotating shaft core inner diameter boss, E and a main shaft rotating shaft core inner diameter step surface; I. an inner diameter step surface of the spindle rotation shaft core;
as shown in fig. 6: f, pulling force of the pull claw connecting shaft to the pull claw shaft; n1 is the acting force of symmetrical two-petal pull claw pieces on the pull claw shaft; n2 is the acting force of the symmetrical two-petal pull claw pieces on the pull claw shaft; f' is the resultant force of N1 and N2, and the reaction force of F;
as shown in fig. 7: n1' is the reaction force of the pull claw shaft to the pull claw piece and N1; q1 is the acting force of the HSK knife handle on the pull claw piece; t1, exerting acting force on a right outer diameter boss of the pull claw piece for an inner diameter step surface E of the main shaft rotating shaft core; n1'y is the y-axis orthogonal resolution of N1'; n1'x is the x-axis orthogonal resolution of N1'; q1y is the y-axis orthogonal resolution of Q1; q1x is the x-axis orthogonal resolution of Q1;
as shown in fig. 8: q1' is the reaction force of the pull claw piece on the HSK knife handle and Q1; p1 is the acting force of the spindle rotating shaft core taper hole on the HSK knife handle; f, the static friction force of the spindle rotating shaft core taper hole to the HSK knife handle taper shank is obtained; m1, axial acting force is applied to the flange surface of the HSK knife handle by the end surface of the main shaft rotating shaft core; c, the included angle between the conical surface of the HSK knife handle and the axial direction is the included angle between the conical surface of the HSK knife handle and the axial direction, namely the HSK knife handle 1: half angle of 10 taper angle; q1'y is the y-axis orthogonal resolution of Q1'; q1'x is the x-axis orthogonal resolution of Q1'; p1y is the y-axis orthogonal resolution of P1; p1x is the x-axis orthogonal resolution of P1; fy is the y-axis orthogonal resolution of f; fx, the x-axis orthogonal resolution of f;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The pull claw with the self-locking reinforcement function in the broaching state and capable of being matched with the HSK tool system is divided into eight parts as shown in fig. 1 and 2: the claw pulling device comprises a claw pulling shaft 1, six claw pulling sheets 2, an annular spring 3, a claw pulling separation ring 4, a guide copper nut 5, a U-shaped oil seal 6, a through hole non-head inner hexagonal bolt 7 and a wave spring ring 8; the inner diameter of the pull claw shaft 1 is a through hole, the front end of the inner diameter is provided with a U-shaped oil seal 6, the outer diameter of the guide copper nut is provided with threads, the guide copper nut is in threaded connection with a front end hole of the inner diameter of the pull claw shaft, the middle of the inner diameter of the pull claw shaft is provided with internal thread threads, the inner diameter of the pull claw separating ring 4 is provided with a through hole without head internal hexagonal bolt 7, the six-petal pull claw piece 2 is divided into three parts U, v and w, the middle is provided with a groove v, the bosses of the outer diameters of the two ends are U and w respectively, the boss w of the right outer diameter is provided with an arc groove, the annular spring 3 is assembled, the annular spring 3 hoops the six-petal pull claw piece 2 around the outer diameter of the pull claw shaft 1, the right end face of the six-petal pull claw piece 2 is radially provided with a groove and is matched with radial protrusions of the left end face of the pull claw separating ring 4, the six-petal pull claw piece is evenly distributed on the outer diameter of the pull claw shaft, the inner diameter of the pull claw separating ring 4 is provided with a through hole, the middle step is arranged in the middle of the inner diameter, the inner diameter of the large-diameter of the step is provided with a wavy spring ring 8, the contact inclined plane H of the pull claw piece 2 and the pull claw piece 1 and the axial contact inclined plane a is a small angle a is a small tight wedge angle; the contact inclined plane G of the pull claw piece 2 and the inner diameter step of the HSK knife handle has an included angle b with the radial direction, and the included angle b is smaller than 45 degrees.
The broaching mechanism of the self-locking reinforcement type broaching claw application example is shown in fig. 3 and 4, and has the following structure when the HSK knife handle is tensioned: the inside diameter hole of the main shaft rotating shaft core 10 is sequentially provided with an HSK handle 9, a self-locking reinforcement type pull claw, a pull claw connecting shaft 11 and a pull cutter rod 12, the front taper hole of the main shaft rotating shaft core 10 is provided with the HSK handle 9, the self-locking reinforcement type pull claw is internally supported to tighten the HSK handle, the left end of the outer diameter of the pull claw connecting shaft 11 is provided with threads which are connected with the middle threads of the inside diameter of the pull claw shaft 1 of the self-locking reinforcement type pull claw, the left end of the outer diameter of the pull cutter rod 12 is provided with threads which are connected with the inside diameter threads of the right end of the pull claw connecting shaft 11, the pull cutter rod 12 pulls the pull claw connecting shaft towards the rear end of the main shaft rotating shaft core 10, the pull claw connecting shaft 11 tightens the self-locking reinforcement type pull claw, the six-petal pull claw piece 2 of the self-locking reinforcement type pull claw is clamped on the inner diameter boss d of the main shaft rotating shaft core, the inner diameter step surface E of the main shaft rotating shaft core 10 is contacted with the step surface of the right outer diameter boss w of the six-petal pull claw piece 2, the right end surface of the wave spring ring 8 of the self-locking reinforcement type pull claw is contacted with the inner diameter step surface I of the main shaft rotating shaft core, the inner diameter of the HSK cutter handle is provided with a raised central water outlet guide rod, the guide rod penetrates through the guide copper nut to be inserted into the pull claw shaft inner diameter hole of the self-locking reinforcement type pull claw, and the U-shaped oil seal 6 is in sealing contact with the outer diameter of the guide rod.
When the broaching mechanism of the self-locking reinforcement type broaching claw application example is in a tensioning state, as shown in fig. 4, all accessories of the broaching mechanism are in a complete constraint state, the inner diameter of a broaching claw separating ring is in transition fit with the outer diameter of a broaching claw shaft, the outer diameter of the right end of a broaching claw connecting shaft is in transition fit with the middle inner diameter of a spindle rotating shaft core, six-petal broaching claw sheets are radial and axial and are wedged in the complete constraint state, an HSK type cutter handle is wedged in the complete constraint state between the six-petal broaching claw sheets and a taper hole and the front end face of the spindle rotating shaft core, and the broaching claw separating ring is axially pushed and constrained by a wave spring.
The self-locking reinforcement type pulling claw action principle is that when the cutter is loosened, the cutter loosening cylinder pushes the cutter pulling rod 12 to move forwards, the cutter pulling rod pushes the cutter pulling claw connecting shaft 11 to move forwards, the six-valve pulling claw piece 2 is loosened from the wedging state, the cutter pulling rod continues to move forwards to push the HSK cutter handle to move forwards slightly, the two sides of the HSK cutter handle are separated from the constraint state, the six-valve pulling claw piece still takes the inner diameter step surface E of the main shaft rotating shaft core as a supporting point, the wave spring ring pushes the push-pull claw separating ring by taking the inner diameter step surface I of the main shaft rotating shaft core as a supporting point, the cutter pulling claw separating ring pushes the six-valve pulling claw piece to be in an open state, the cutter loosening process is a process from the state shown in fig. 4 to the state shown in fig. 5, the HSK cutter handle can be pulled out by the cutter changing manipulator, the inner diameter of the six-valve pulling claw piece is radially compressed by the inner diameter of the cutter handle when the cutter pulling handle is pulled out, the six-valve pulling claw piece still takes the inner diameter step surface E of the main shaft rotating shaft core as a supporting point, the wave spring ring is pushed reversely, the HSK cutter handle is pushed out, the six-valve pulling claw ring is pulled out by the wave spring ring after the cutter handle is pulled out by the wave ring, and the wave spring ring is pulled back to the wave ring to be pulled out by the wave ring. When the tool is assembled, after the tool is rotationally converted by the manipulator, the manipulator clamps the HSK tool handle to be inserted into the front taper hole of the spindle rotating shaft core, during insertion, the inner diameter port chamfer of the tapered end of the HSK tool handle can compress the six-petal pull claw to radially shrink, the six-petal pull claw piece is inserted into the inner diameter of the HSK tool handle, after the HSK tool handle is inserted into the front taper hole of the spindle rotating shaft core in place, the tool changing manipulator can rapidly disengage the tool handle and rotate to a standby position without interference with the spindle, the pull claw connecting shaft is pulled by the tool pulling rod, the pull claw shaft axially retreats, the six-petal pull claw piece is pulled by the pull claw shaft outer diameter inclined plane, the step surface of the right outer diameter boss w of the six-petal pull claw piece is contacted with the inner diameter step surface E of the spindle rotating shaft core 10, the pull claw shaft is axially moved backwards again, the H surface of the six-petal pull claw piece is wedged tightly by the pull claw shaft outer diameter inclined plane, the HSK tool handle enters a self-locking state, the two surfaces of the spindle rotating shaft core taper hole and the front end surface are in contact state, and the force-boosting state is achieved by the pull claw shaft, and the force-boosting state is achieved as shown in a drawing state in a drawing diagram 4.
The self-locking reinforcement type broach mechanism of the self-locking reinforcement type broach application example performs stress analysis when the broach mechanism is in a tensioning knife state, so as to verify the self-locking reinforcement principle of the self-locking reinforcement type broach, firstly, the principle that in the tensioning knife state, no matter an HSK knife handle or each jaw pulling piece, a main shaft rotating shaft core and a jaw pulling shaft are in a mechanical static balance state of a rigid object, six annularly distributed jaw pulling pieces can be simplified into two jaw pulling pieces positioned at symmetrical positions according to the principle of addition and subtraction balance force system of a statics axiom, and the six jaw pulling pieces are separated one by one from a broach mechanism structure diagram in the tensioning knife state, and the stress analysis is performed as follows:
1) As shown in fig. 6, the force analysis is performed on the pull claw shaft, the pull force of the pull claw coupling shaft on the pull claw shaft is F, the pull claw coupling shaft is a main force, the acting forces of the symmetrical two-piece pull claw pieces on the pull claw shaft are respectively N1 and N2, in a symmetrical state, n1=n2 are equal in value, the included angle between the contact inclined plane H of the pull claw pieces and the pull claw shaft and the axial direction is a, a is smaller than 10 degrees, the resultant force of N1 and N2 is F 'according to the parallelogram rule of mechanics, the pull claw shaft is in a balanced state, and F' =f is a pair of acting forces and reaction forces with equal values and opposite directions; an axial component of N1, n1sina=f'/2=f/2; because the angle a is very small, the values of N1 and N2 are several times of F/2, the main power is converted into the direction change, and the two driven powers are amplified several times, so that the first power amplification is finished.
2) As shown in fig. 7, the stress analysis is performed on a single-petal pull claw piece, the included angle between the contact inclined plane H of the pull claw piece and the pull claw shaft and the axial direction is a, the included angle between the contact inclined plane G of the pull claw piece and the inner diameter step of the HSK cutter handle and the radial direction is b, the angle b is smaller than 45 degrees, the pull claw shaft applies a force N1 'to the pull claw piece as a main force according to the principle of acting force and reacting force, n1=n1' with equal and opposite numerical values, the HSK cutter handle applies a force Q1 as a secondary force according to the principle of force balance and is in radial balance with the orthogonal decomposition method of force, and Q1 sinb=n1 'cosa, namely q1y=n1' y, because a is a wedge angle smaller than 10 degrees, N1'cosa > N1' sina, namely N1'y > 1' x, and the numerical value is several times larger; because b is less than 45 degrees, Q1cosb > Q1sinb, i.e., Q1x > Q1y, is here a second boost and the direction is turned back to the axial direction. In summary, the three terms, q1x > q1y, q1y=n1 ' y, N1' y > N1' x, obtain that q1x > N1' x, the numerical value is several times greater, but the pull tab axial is in balanced state, there is a need to apply an axial acting force to the pull tab by a third party, the pull tab contacts the object and has a spindle rotation axis core, the pull tab separating ring, the value of the axial acting force to the pull tab by the pull tab separating ring is equal to the elastic thrust of the waveform spring ring to the pull tab separating ring, which is smaller and negligible, and the direction is the same as Q1x, the direction applies an acting force T1 to the pull tab right outer diameter boss w on the inner diameter step surface E which is the spindle rotation axis core, which is coaxial with N1' x, i.e. there is an axial acting force on the numerical value of q1x=q1cosb=n1sina+t1 ' x+t1 '.
3) As shown in fig. 8 and 9, the HSK handle is subjected to stress analysis, and the taper of the HSK handle is 1:10, the taper is far smaller than the BT standard shank taper 7:24, c, which is the included angle between the conical surface of the HSK knife handle and the axial direction, carrying out stress analysis on one side of the HSK knife handle, which is contacted with a claw pulling piece, wherein the claw pulling piece applies a force Q1' to the HSK knife handle as a main force, and the force Q1 to the claw pulling piece of the HSK knife handle as a relation between the acting force and a counter acting force; the spindle rotating shaft core taper hole applies force P1 to the tool handle, the tool handle HSK is in a radial balance state, namely P1y=Q1' y; the axial stress analysis of the HSK knife handle is performed, and also because b is smaller than 45 degrees, Q1' cosb is larger than Q1' sinb, namely Q1' x is larger than Q1' y, and P1y=Q1 ' y is calculated; q1' x > P1y is also obtained; because c is a small angle, 1:10 taper angle, cosc > sinc, is far greater than P1cosc, i.e. P1y > P1x, P1x is very small and can be ignored, Q1'x > P1y is obtained by conclusion that Q1' x > P1x, and is also far greater than HSK handle axial stress unbalance, static friction force f, f generated by spindle taper hole to HSK handle taper handle is driven force, no special friction performance material exists between HSK handle and taper hole of spindle rotation axis core, friction coefficient is not greater than 1, P1 f, P1cosc > fcosc, i.e. P1y > fx, conclusion Q1'x > P1y is obtained by conclusion that Q1' x > fx, the values of P1y > P1x, P1x are very small, as small as possible, if Q1'x > fx+p1x, exceeds the maximum static friction force between the tool shank and the spindle taper hole, the tool shank will move to the side of high stress, and move to the side of high stress, where the flange surface of the HSK tool shank contacts the front end surface of the spindle rotation shaft core, the front end surface of the spindle rotation shaft core applies a force M1 axially to the flange surface of the tool shank, until the tool shank is in an axially balanced state, m1+p1x+fx=q1x', which makes the taper surface and flange surface of the HSK tool shank contact the taper hole and the front end surface of the spindle rotation shaft core, and the distance between the flange surface of the HSK tool shank and the front end surface of the spindle rotation shaft core is from greater than zero to zero, and 0.3 shown in fig. 5 to 0 shown in fig. 4.
Conclusion of three force analyses: n1sina=f/2; q1x > N1' x, several times greater in value; the axial pulling force Q1'x of the single-petal pulling claw piece on the HSK knife handle is Q1' x=Q 1x in numerical value, F/2=N1sina=N1 'sina=N1' x, and the Q1'x is several times larger than F/2, and according to the principle of an addition and subtraction balance force system of the statics axiality of a rigid object, two balance force systems can be overlapped, and the axial pulling force (2 times Q1' x) of the simplified two-petal pulling claw piece on the HSK knife handle is several times larger than the pulling force F of the pulling claw connecting shaft on the pulling claw shaft, namely the principle of the force multiplication of the pulling claw. The acting force of the tool handle on the spindle taper, namely the reaction force of P1, can enable the taper of the spindle rotation shaft core to elastically deform by a small amount, so that the tool handle can axially move to a small amount until the flange surface of the tool handle contacts with the front end surface of the spindle rotation shaft core, and an axial balance state is achieved, wherein M1+P1x+fx=Q1' x. The invention can not only multiply the broaching force, but also ensure the two-sided contact required by the use of the HSK standard tool.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of the invention, "a plurality" means two or more, unless otherwise specifically and clearly defined.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (6)
1. Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK cutter system of numerical control machine tool and structurally divided into eight parts: the six-petal claw shaft is characterized in that the inner diameter of the claw shaft (1) is a through hole, the front end of the inner diameter is provided with the U-shaped oil seal (6), the copper nut (5) is guided, the copper nut (5) is threaded on the outer diameter of the copper nut, the copper nut is connected with a front end hole of the inner diameter of the claw shaft in a threaded manner, the middle of the inner diameter of the claw shaft is provided with an inner tooth thread, the copper nut is provided with the through hole without head inner hexagon bolt (7), the six-petal claw shaft (2) is divided into three parts (U), (v) and (w), the middle is provided with grooves (v), the outer diameter bosses at the two ends are respectively (U) and (w), the right outer diameter boss (w) is provided with an arc groove, an annular spring (3) is assembled, the annular spring (3) hoops six-petal pull claw pieces (2) around the outer diameter of the pull claw shaft (1), the right end face of the six-petal pull claw pieces (2) is radially provided with grooves, the grooves are matched with the radial protrusions on the left end face of the pull claw separating ring (4), the pull claw separating ring (4) separates six-petal pull claw pieces on the outer diameter of the pull claw shaft in an even distribution way, the inner diameter of the pull claw separating ring (4) is a through hole, a step is arranged in the middle of the inner diameter, a wave spring ring (8) is assembled in an inner diameter hole with the right side of the step, the contact inclined plane (H) of the pull claw piece (2) and the pull claw shaft (1) has an included angle (a) with the axial direction, and the included angle (a) is a small-angle wedging self-locking angle; the contact inclined plane (G) of the pull claw piece (2) and the inner diameter step of the HSK knife handle is an included angle (b) with the radial direction, the included angle (b) is an included angle which is smaller than 45 degrees, and the pull cutter mechanism of the self-locking reinforcement type pull claw application example is shown in a diagram (3) and a diagram (4), and has the following structure when the HSK knife handle is tensioned: the inside diameter hole of the main shaft rotating shaft core (10) is sequentially provided with an HSK knife handle (9), a self-locking reinforcement type pull claw, a pull claw connecting shaft (11) and a pull cutter rod (12), the front taper hole of the main shaft rotating shaft core (10) is provided with the HSK knife handle (9), the self-locking reinforcement type pull claw is internally supported and tensioned with the HSK knife handle, the left end of the outer diameter of the pull claw connecting shaft (11) is provided with threads which are connected with the middle threads of the inside diameter of the pull claw shaft (1) of the self-locking reinforcement type pull claw, the left end of the outer diameter of the pull cutter rod (12) is provided with threads which are connected with the inside diameter threads of the right end of the pull claw connecting shaft (11), the pull cutter rod (12) pulls the pull claw connecting shaft towards the rear end of the main shaft rotating shaft core (10), the self-locking reinforcement type pull claw is tensioned by a pull claw connecting shaft (11), six-petal pull claw pieces (2) of the self-locking reinforcement type pull claw are clamped on an inner diameter boss (d) of a main shaft rotating shaft core, an inner diameter step surface (E) of the main shaft rotating shaft core (10) is contacted with a step surface of a right outer diameter boss (w) of the six-petal pull claw pieces (2), the right end surface of a wave spring ring (8) of the self-locking reinforcement type pull claw is contacted with an inner diameter step surface (I) of the main shaft rotating shaft core, a raised central water guide rod is arranged at the inner diameter of the HSK cutter handle, the water guide rod penetrates through a guide copper nut and is inserted into a pull claw shaft inner diameter hole of the self-locking reinforcement type pull claw, and a U-shaped oil seal (6) is in sealing contact with the outer diameter of the water guide rod.
2. The self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool according to claim 1, which is characterized in that: the contact inclined plane (H) of the pull claw piece (2) and the pull claw shaft (1) has an included angle (a) with the axial direction, and the included angle (a) is a small-angle wedging self-locking angle, which is characterized by being different from the first improved design point of the common HSK standard pull claw.
3. The self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool according to claim 1, which is characterized in that: the six-petal pulling claw piece (2) is characterized in that the outer shape of the six-petal pulling claw piece (2) is divided into three parts, namely a groove (v) in the middle, outer diameter bosses at two ends are respectively (u) and (w), in an application example, the self-locking reinforcement type pulling claw is clamped on an inner diameter boss (d) of a main shaft rotating shaft core, an inner diameter step surface (E) of the main shaft rotating shaft core (10) is contacted with a step surface of a right outer diameter boss (w) of the six-petal pulling claw piece (2), and an inner diameter step surface (E) of the main shaft rotating shaft core (10) is a reaction force balance fulcrum of the self-locking reinforcement type pulling claw on a broaching force increasing part of an HSK handle, and the characteristic is a second improvement design point different from a common HSK standard pulling claw.
4. The self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool according to claim 1, which is characterized in that: the six-petal pulling claw piece (2) is provided with a groove in the radial direction on the right end surface and is matched with the radial bulge on the left end surface of the pulling claw separating ring (4), the six-petal pulling claw piece is separated by the pulling claw separating ring and is uniformly distributed on the outer diameter of the pulling claw shaft, the dynamic balance of the rotating part of the main shaft during high-speed rotation is facilitated, and the characteristic is a third improvement design point different from the common HSK standard pulling claw.
5. The self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool according to claim 1, which is characterized in that: the inner diameter of the pull claw separating ring (4) is a through hole, a step is arranged in the middle of the inner diameter, a wave spring ring (8) is assembled in a large inner diameter hole on the right side of the step, in an application example, the self-locking reinforcement type pull claw is assembled with a main shaft rotating shaft core, the right end face of the wave spring ring (8) of the self-locking reinforcement type pull claw is contacted with the inner diameter step face (I) of the main shaft rotating shaft core, the wave spring ring (8) can take the inner diameter step face (I) of the main shaft rotating shaft core as a supporting point, the push-pull claw separating ring is pushed, the pull claw separating ring pushes the six-petal pull claw sheet, and the HSK cutter handle can still be kept to be blocked in a cutter loosening state.
6. The self-locking reinforcement type pull claw applied to a high-speed spindle adaptive HSK tool system of a numerical control machine tool according to claim 1, which is characterized in that: the inner diameter of the pull claw shaft (1) is a through hole, the front end of the inner diameter is provided with a U-shaped oil seal (6), the outer diameter of the guide copper nut is threaded, the guide copper nut is in threaded connection with a hole at the front end of the inner diameter of the pull claw shaft, an inner thread is arranged in the middle of the inner diameter of the pull claw shaft, a through hole-free inner hexagonal bolt (7) is assembled, in an application example, the self-locking reinforcement type pull claw and the HSK cutter handle are assembled, the inner diameter of the HSK cutter handle is provided with a raised central water guide rod, the water guide rod penetrates through the guide copper nut and is inserted into the inner diameter hole of the pull claw shaft of the self-locking reinforcement type pull claw, and the U-shaped oil seal (6) is in sealed contact with the outer diameter of the water guide rod, so that the self-locking reinforcement type pull claw can conveniently guide high-pressure cutting water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210477816.8A CN117047525A (en) | 2022-05-05 | 2022-05-05 | Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210477816.8A CN117047525A (en) | 2022-05-05 | 2022-05-05 | Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117047525A true CN117047525A (en) | 2023-11-14 |
Family
ID=88655892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210477816.8A Pending CN117047525A (en) | 2022-05-05 | 2022-05-05 | Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117047525A (en) |
-
2022
- 2022-05-05 CN CN202210477816.8A patent/CN117047525A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217912868U (en) | High-speed electric spindle applied to turning and milling composite five-axis linkage numerical control machine tool | |
| CN214351087U (en) | Self-locking reinforcement type pull claw applied to high-speed spindle broach mechanism of numerical control machine tool | |
| US20120319364A1 (en) | Chuck assembly for light alloy wheels | |
| CN217831884U (en) | Automatic tool changing electric spindle suitable for machining center | |
| CN112059680A (en) | Novel high-speed spindle broach mechanism with self-locking and force-increasing pulling claws | |
| CN110039352B (en) | Radially adjustable flywheel gear ring lathe inner hole clamping assembly | |
| CN213970137U (en) | Novel high-speed spindle broach mechanism with self-locking and force-increasing pulling claws | |
| CN117047525A (en) | Self-locking reinforcement type pull claw applied to high-speed spindle adaptive HSK (high speed tool) cutter system of numerical control machine tool | |
| CN218800733U (en) | Self-locking reinforcement type pull claw applied to high-speed spindle HSK cutter system | |
| CN113369951A (en) | Dynamic built-in static guide sleeve | |
| CN216576816U (en) | Novel main shaft broach mechanism with integrated pull claw | |
| CN219074939U (en) | Clamping device for thin-wall pipe fitting machining | |
| CN215881258U (en) | Cutter handle rotary flat-floating clamping mechanism | |
| CN113681321B (en) | Cutter handle rotary flat-floating clamping mechanism | |
| CN213497738U (en) | Efficient machining tool assembly for non-standard thin-wall bearing bush | |
| CN212735035U (en) | Piston rod end face hole machining tool | |
| CN210024571U (en) | Radial adjustable flywheel gear ring lathe inner hole clamp | |
| CN117047146A (en) | High-speed motorized spindle applied to turning-milling composite five-axis linkage numerical control machine tool | |
| CN112621659A (en) | A high-efficient device of screwing up for quick-operation joint assembly | |
| CN112846256A (en) | Heavy-load electric spindle and machine tool | |
| CN206605389U (en) | Pull-type elastic jacket positioning clamping device in a kind of high-precision axis of cone | |
| CN102632402B (en) | Square disassembly tapered sleeve air cylinder | |
| CN103192346A (en) | Tool system for rapid assembling and disassembling of tool holder rivet | |
| CN215902755U (en) | Numerical control lathe processing fixing device | |
| CN219152143U (en) | Positioning device for sliding fork cutting inner hole groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |