CN116060984A - Tensioning oil cylinder structure, clamp and spiral bevel gear machine tool - Google Patents
Tensioning oil cylinder structure, clamp and spiral bevel gear machine tool Download PDFInfo
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- CN116060984A CN116060984A CN202310320361.3A CN202310320361A CN116060984A CN 116060984 A CN116060984 A CN 116060984A CN 202310320361 A CN202310320361 A CN 202310320361A CN 116060984 A CN116060984 A CN 116060984A
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- piston
- pull rod
- clamp
- cylinder
- cylinder structure
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F9/00—Making gears having teeth curved in their longitudinal direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
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Abstract
The utility model discloses a tensioning oil cylinder structure, a clamp and a spiral bevel gear machine tool, and relates to the technical field of machine tools. A tensioning cylinder structure comprising: the cylinder body is provided with an oil cylinder cavity; the piston is arranged in the oil cylinder cavity; the pull rod is connected with the piston and moves along with the piston; the hydraulic rotary joint is rotatably arranged on the cylinder body, can move along the movement direction of the piston and synchronously moves along with the piston, and is provided with an oil inlet and an oil outlet which are communicated with the oil cylinder cavity; the guide mechanism is provided with a linear guide travel, the linear guide travel is parallel to the movement direction of the piston, and the hydraulic rotary joint is connected with the guide mechanism. The working condition gear with the long axial size can be installed, the length of the main shaft is shortened, the weight of the main shaft is reduced, and the size of a machine tool is reduced.
Description
Technical Field
The utility model relates to the technical field of processing machine tools, in particular to a tensioning oil cylinder structure, a clamp and a spiral bevel gear machine tool.
Background
The tensioning cylinder is multipurpose on the clamp, a plurality of clamping jaws are arranged on the clamp, the tensioning cylinder can clamp and fix the workpiece by the clamping jaws through tensioning the workpiece, a main shaft and a motor connected with the main shaft in a transmission mode are arranged between the tensioning cylinder and the clamp, the main shaft is driven to rotate by the motor, and the main shaft further drives the tensioning cylinder to rotate together with the clamp, for example, the clamp shown in Chinese patent No. 211489961U and Chinese patent No. CN 218110042U.
The existing tensioning cylinder is arranged at the tail end of a main shaft, a pull rod is connected with a piston through threads, the rear end of the pull rod is free of installation space, when a working condition gear with a longer axial rod is installed, the axial rod is usually directly sleeved on the pull rod, the axial rod stretches into the main shaft and can stretch into the tail end of the main shaft all the time, when the length of the axial rod is larger than that of the main shaft, the whole length of the main shaft is required to be lengthened, the working condition gear can be installed smoothly, and the weight of the main shaft and the whole size of a machine tool are increased.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a tensioning oil cylinder structure which can solve the problem of mounting a working condition gear with a long axial dimension, shorten the length of a main shaft, lighten the weight of the main shaft and reduce the dimension of a machine tool.
The utility model further provides a clamp.
The utility model also provides a spiral bevel gear machine tool.
According to an embodiment of the first aspect of the present utility model, a tensioning cylinder structure includes:
the hydraulic cylinder comprises a cylinder body, a hydraulic cylinder and a hydraulic cylinder, wherein the cylinder body is provided with an oil cylinder cavity for applying hydraulic pressure;
the outer peripheral surface of the piston is provided with a convex guide ring, the outer peripheral surface of the guide ring is in butt joint with the inner peripheral wall of the oil cylinder cavity and can slide along the axial direction of the oil cylinder cavity under the action of hydraulic pressure, the end surface of the piston, facing the clamp, is provided with an avoidance chamber, and the avoidance chamber is used for avoiding the rod part of a workpiece;
the pull rod is connected with the piston, can adjust the relative position with the piston, and can move towards the direction away from the clamp under the drive of the piston.
The tensioning cylinder structure provided by the embodiment of the utility model has at least the following beneficial effects: through applying hydraulic pressure to cylinder body hydro-cylinder chamber, can drive the guide ring along the axis direction reciprocating motion in hydro-cylinder chamber, and then drive piston reciprocating motion, piston reciprocating motion drives the pull rod reciprocating motion, realize tensioning hydro-cylinder's taut and lax, and when the cover is equipped with the longer operating mode gear of axial dimension on the pull rod, operating mode gear is after passing the main shaft, can stretch into the chamber of dodging of piston, and be pulled by the pull rod and realize locking in dodging the chamber, and need not to increase main shaft length, realize the longer operating mode gear installation of axial dimension, and, when the axial dimension of operating mode gear is moderate, also accessible adds the piston and dodges the chamber, shorten main shaft length dimension, alleviate main shaft weight, reduce the lathe size.
According to some embodiments of the present utility model, the hydraulic rotary joint is rotatably disposed on the outer circumferential surface of the piston and can move together with the piston, and the hydraulic rotary joint is provided with an oil inlet and an oil outlet which are communicated with the oil cylinder cavity; the guide mechanism is provided with a linear guide travel, the linear guide travel is parallel to the movement direction of the piston, and the hydraulic rotary joint is connected with the guide mechanism.
According to some embodiments of the utility model, the guide mechanism comprises a guide rod, a linear bearing and a connecting block, wherein the guide rod is arranged on one side of the cylinder body, the guide rod is parallel to the movement direction of the piston, the linear bearing is arranged on the guide rod, and the hydraulic rotary joint is connected with the linear bearing through the connecting block.
According to some embodiments of the utility model, the pull rod is connected with the piston in an adjusting abutting manner, and the pull rod can automatically reset to abut against the piston after being far away from the clamp and the piston is reset.
According to some embodiments of the utility model, the pull rod is connected with the piston in an abutting manner through an adjusting abutting piece, the adjusting abutting piece is sleeved on the pull rod, can move along the axial direction of the pull rod and is fixed on the pull rod, and an abutting portion abutting against the piston is arranged on the outer peripheral surface of the adjusting abutting piece.
According to some embodiments of the utility model, the adjustment abutment is screwed onto the tie rod.
According to some embodiments of the utility model, the adjusting abutting piece comprises an adjusting piece and an abutting piece, the abutting piece is sleeved on the pull rod, the abutting portion is arranged on the outer peripheral surface of the abutting piece, the adjusting piece is connected with the pull rod in a threaded mode, and the adjusting piece is located at one end, far away from the clamp, of the abutting piece.
According to some embodiments of the utility model, the pull rod is connected with the piston through a screw.
According to some embodiments of the utility model, the hydraulic swivel is mounted on the cylinder by a swivel bearing.
The clamp according to the embodiment of the second aspect of the utility model comprises the tensioning cylinder structure of the embodiment, and the clamp is driven to clamp or unclamp by the pull rod.
The clamp according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: a shorter spindle can be used, the weight of the spindle is reduced, and the clamp size is smaller.
An embodiment of a spiral bevel gear machine according to a third aspect of the present utility model includes the tightening cylinder structure of the above embodiment.
The spiral bevel gear machine tool according to the embodiment of the third aspect of the utility model has at least the following beneficial effects: when the industrial and mining gear is installed, the gear can be integrated in the inner cavity of the piston, the main shaft does not need to be lengthened, and the main shaft is more compact.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a prior art tensioning cylinder;
FIG. 2 is a schematic view of the structure of the tensioning cylinder of the present utility model;
fig. 3 is a schematic structural view of the tightening cylinder of the present utility model applied to a spiral bevel gear machine tool fixture.
Reference numerals:
a cylinder 100; a cylinder chamber 110;
a piston 200; a avoidance chamber 210;
a pull rod 300; an adjustment abutment 310; an adjusting member 311; an abutment 312;
a hydraulic swivel 400;
a guide mechanism 500; a guide bar 510; linear bearings 520; a connection block 530;
a main shaft 600;
an axial rod 700.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 2 and 3, the present utility model discloses a tensioning cylinder structure, comprising:
a cylinder block 100, the cylinder block 100 being provided with a cylinder chamber 110 for applying hydraulic pressure;
the outer peripheral surface of the piston 200 is provided with a convex guide ring, the outer peripheral surface of the guide ring is abutted with the inner peripheral wall of the oil cylinder cavity 110 and can slide along the axial direction of the oil cylinder cavity 110 under the hydraulic action, the end surface of the piston 200 facing the clamp is provided with an avoidance chamber 210, and the avoidance chamber 210 is used for avoiding the workpiece rod part;
the pull rod 300 is connected with the piston 200, can adjust the relative position with the piston 200, and can move towards a direction away from the clamp under the driving of the piston 200.
It can be understood that the existing tensioning cylinder is installed at the tail end of the workpiece spindle 600, the pull rod 300 is in threaded connection with the piston 200, and only the spindle 600 is used for accommodating the working condition gear axial rod 700, when the axial rod 700 is longer in size, the equipment is often changed in a mode of lengthening the length of the spindle 600, so that the problems of overlong spindle 600, heavy weight and larger machine tool size are caused.
In this embodiment, by applying hydraulic pressure to the cylinder cavity 110 of the cylinder body 100, the guide ring can be driven to reciprocate along the axial direction of the cylinder cavity 110, so as to drive the piston 200 to reciprocate, the piston 200 reciprocates to drive the pull rod 300 to reciprocate, tensioning and loosening of the tensioning cylinder are achieved, when the working condition gear with a longer axial rod 700 is sleeved on the pull rod 300, the axial rod 700 can extend into the avoidance cavity 210 of the piston 200 after passing through the spindle 600, be connected with the pull rod 300, be pulled by the pull rod 300 in the avoidance cavity 210, realize locking, and can install the working condition gear with a longer axial rod 700 without increasing the length of the spindle 600, and when the axial size of the working condition gear is moderate, the length of the spindle 600 is shortened by additionally arranging the avoidance cavity 210 of the piston 200, the weight of the spindle 600 is reduced, and the size of a machine tool is reduced.
Referring to fig. 2, the hydraulic rotary joint 400 and the guide mechanism 500 are further included, the hydraulic rotary joint 400 is rotatably arranged on the outer circumferential surface of the piston 200 and can move together with the piston 200, and an oil inlet and an oil outlet which are communicated with the oil cylinder cavity 110 are arranged on the hydraulic rotary joint 400; the guide mechanism 500 has a linear guide stroke parallel to the movement direction of the piston 200, and the hydraulic swivel 400 is connected to the guide mechanism 500.
In this embodiment, hydraulic oil enters the piston 200 through the oil inlet and the oil outlet on the hydraulic swivel 400, and finally enters the cylinder chamber 110. The pull rod 300 is connected with the piston 200 through screws, and in the process of the front-back movement of the piston 200, the pull rod 300 is driven to move back and forth, so that the tensioning and the loosening of the clamp are realized. When the hydraulic rotary joint 400 is connected with the guide mechanism 500, the hydraulic rotary joint 400 moves back and forth together with the guide mechanism 500 when the piston 200 moves back and forth, and the hydraulic rotary joint 400 is kept stationary by the guide mechanism 500 when the cylinder assembly rotates as a whole.
Referring to fig. 2, in some embodiments of the present utility model, the guide mechanism 500 includes a guide rod 510, a linear bearing 520, and a connection block 530, the guide rod 510 is disposed at one side of the cylinder 100, the guide rod 510 is parallel to the movement direction of the piston 200, the linear bearing 520 is mounted on the guide rod 510, and the hydraulic rotary joint 400 is connected to the linear bearing 520 through the connection block 530.
In the present embodiment, when the hydraulic rotary joint 400 moves forward and backward with the piston 200, the hydraulic rotary joint 400 is connected to the linear bearing 520 through the connection block 530, and the linear bearing 520 moves linearly at the guide rod 510. When the cylinder assembly is rotated as a whole, since the linear bearing 520 does not rotate with the cylinder assembly, the hydraulic swivel 400 remains relatively stationary under the restriction of the linear bearing 520 and does not rotate with the cylinder assembly.
Referring to fig. 2, the pull rod 300 is connected to the piston 200 in an adjusting and abutting manner, and the pull rod 300 can be automatically reset to abut against the piston 200 after being far away from the clamp and the piston 200 is reset.
Specifically, the pull rod 300 may be restored by elastic force of an elastic member on the clamp, for example, when the piston 200 moves in a direction away from the clamp, the elastic member of the clamp compresses or extends to have a certain elastic potential energy, and when the piston 200 returns toward the clamp, the elastic member of the clamp releases the elastic potential energy, so that the clamp stretches to drive the workpiece and the pull rod 300 to return until the pull rod 300 is in re-abutting contact with the piston 200.
Referring to fig. 2 and 3, the rod 300 is connected to the piston 200 by an adjustment contact 310, the adjustment contact 310 is fitted over the rod 300, and is fixed to the rod 300 so as to be movable in the axial direction of the rod 300, and an abutment portion that contacts the piston 200 is provided on the outer peripheral surface of the adjustment contact 310.
It should be appreciated that the piston 200 is provided with an abutment ring on the inner peripheral wall of the avoidance chamber 210, the abutment ring abuts against the abutment portion, so as to realize the abutting connection between the pull rod 300 and the piston 200, and the relative position of the pull rod 300 and the piston 200 is adjusted by adjusting the movement of the abutment member 310 along the axial direction of the pull rod 300, so as to adjust the elastic potential energy of the pull rod 300 to the clamp.
Referring to fig. 2, the adjustment abutment 310 is threadedly locked to the tie rod 300.
It should be appreciated that the adjusting abutment 310 is sleeved on the pull rod 300, an internal thread is disposed on an inner peripheral wall of the adjusting abutment 310, an external thread is disposed on an outer peripheral wall of the pull rod 300, and the adjusting abutment 310 can move along the axial direction of the pull rod 300 through connection of the internal thread and the external thread, and the adjusting abutment 310 can be directly fixed on the pull rod 300 after moving due to self-locking property of threaded connection.
Referring to fig. 2, the adjusting abutment 310 includes an adjusting member 311 and an abutment member 312, the abutment member 312 is sleeved on the pull rod 300, an abutment portion is disposed on an outer circumferential surface of the abutment member 312, the adjusting member 311 is in threaded connection with the pull rod 300, and is located at one end of the abutment member 312 away from the fixture.
It should be appreciated that the abutting piece 312 may be directly sleeved on the pull rod 300, and the adjusting piece 311 is moved along the pull rod 300 by rotating the adjusting piece 311, so that the adjusting piece 311 abuts against the abutting piece 312, and further drives the abutting piece 312 to abut against the piston 200, where the adjusting piece 311 may be a nut.
Referring to fig. 2, in some embodiments of the present utility model, the tie rod 300 is coupled to the piston 200 by a screw.
In this embodiment, the pull rod 300 is connected to the piston 200 by a screw, and when the piston 200 moves back and forth, the pull rod 300 is driven to move back and forth, so as to clamp and unclamp the clamp.
Referring to fig. 2, in some embodiments of the present utility model, a hydraulic swivel 400 is mounted on the cylinder block 100 by a swivel bearing. The hydraulic swivel 400 may remain relatively stationary as the cylinder 100 rotates.
The utility model also discloses a clamp, which comprises the tensioning cylinder structure of the embodiment, and the clamp is driven to clamp or unclamp by the pull rod 300.
The clamp adopts all the technical schemes of the tensioning cylinder structure of the embodiment, so that the clamp at least has all the beneficial effects brought by the technical schemes of the embodiment, and the description is omitted.
The utility model also discloses a spiral bevel gear machine tool, which comprises the tensioning cylinder structure of the embodiment.
The spiral bevel gear machine tool adopts all the technical schemes of the tensioning cylinder structure of the embodiment, so that the spiral bevel gear machine tool at least has all the beneficial effects brought by the technical schemes of the embodiment, and the description is omitted.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. The utility model provides a taut hydro-cylinder structure which characterized in that includes:
the hydraulic cylinder comprises a cylinder body, a hydraulic cylinder and a hydraulic cylinder, wherein the cylinder body is provided with an oil cylinder cavity for applying hydraulic pressure;
the outer peripheral surface of the piston is provided with a convex guide ring, the outer peripheral surface of the guide ring is in butt joint with the inner peripheral wall of the oil cylinder cavity and can slide along the axial direction of the oil cylinder cavity under the action of hydraulic pressure, the end surface of the piston, facing the clamp, is provided with an avoidance chamber, and the avoidance chamber is used for avoiding the rod part of a workpiece;
the pull rod is connected with the piston, can adjust the relative position with the piston, and can move towards the direction away from the clamp under the drive of the piston.
2. The tensioning cylinder structure according to claim 1, characterized in that: the hydraulic rotary joint is rotatably arranged on the peripheral surface of the piston and can move together with the piston, and the hydraulic rotary joint is provided with an oil inlet and an oil outlet which are communicated with the oil cylinder cavity; the guide mechanism is provided with a linear guide travel, the linear guide travel is parallel to the movement direction of the piston, and the hydraulic rotary joint is connected with the guide mechanism.
3. The tensioning cylinder structure according to claim 2, characterized in that: the guide mechanism comprises a guide rod, a linear bearing and a connecting block, wherein the guide rod is arranged on one side of the cylinder body, the guide rod is parallel to the movement direction of the piston, the linear bearing is arranged on the guide rod, and the hydraulic rotary joint is connected with the linear bearing through the connecting block.
4. A tensioning cylinder structure according to any one of claims 1 to 3, characterized in that: the pull rod is connected with the piston in an adjusting and abutting mode, and the pull rod can automatically reset to be in abutting connection with the piston after being far away from the clamp and the piston is reset.
5. The take-up cylinder structure according to claim 4, wherein: the pull rod is connected with the piston in an abutting mode through an adjusting abutting piece, the adjusting abutting piece is sleeved on the pull rod and can move along the axial direction of the pull rod and is fixed on the pull rod, and an abutting portion in abutting connection with the piston is arranged on the outer peripheral surface of the adjusting abutting piece.
6. The take-up cylinder structure according to claim 5, wherein: the adjusting abutting piece is connected to the pull rod through a threaded lock.
7. The take-up cylinder structure according to claim 5, wherein: the adjusting abutting piece comprises an adjusting piece and an abutting piece, the abutting piece is sleeved on the pull rod, the abutting portion is arranged on the outer peripheral surface of the abutting piece, the adjusting piece is connected with the pull rod through threads, and the adjusting piece is located at one end, far away from the clamp, of the abutting piece.
8. A tensioning cylinder structure according to any one of claims 1 to 3, characterized in that: the pull rod is connected with the piston through a screw.
9. A fixture, characterized in that: comprising a tensioning cylinder structure according to any one of claims 1 to 8, by means of which the clamp is brought to clamp or unclamp.
10. A spiral bevel gear machine, characterized in that: comprising a tensioning cylinder structure according to any one of claims 1 to 8.
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CN202310320361.3A CN116060984B (en) | 2023-03-29 | 2023-03-29 | Tensioning oil cylinder structure, clamp and spiral bevel gear machine tool |
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CN202310320361.3A CN116060984B (en) | 2023-03-29 | 2023-03-29 | Tensioning oil cylinder structure, clamp and spiral bevel gear machine tool |
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CN116060984B CN116060984B (en) | 2023-06-27 |
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CN213053106U (en) * | 2020-08-06 | 2021-04-27 | 湖北达信康矿用设备有限公司 | Hydraulic clamp for gear shaping machine tool |
CN215237937U (en) * | 2021-07-15 | 2021-12-21 | 武汉市中汉精密机械有限公司 | Spindle assembly of high-speed boring machine with loosening cutter oil cylinder center water outlet |
CN113618506A (en) * | 2021-08-23 | 2021-11-09 | 北京德铭纳精密机械有限公司 | Pneumatic tensioning device with shaft positioning for rotary parts |
CN216632881U (en) * | 2021-12-28 | 2022-05-31 | 浙江驰阳精密工具有限公司 | Gear grinding clamp |
CN115614346A (en) * | 2022-09-27 | 2023-01-17 | 秦川集团(西安)技术研究院有限公司 | Rotary joint for high-speed dry cutting gear hobbing machine |
CN115635349A (en) * | 2022-11-01 | 2023-01-24 | 生和精密机械(浙江)有限公司 | Lathe main shaft power head lock sword jar structure |
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