CN114367685A - Workpiece clamping device - Google Patents

Workpiece clamping device Download PDF

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Publication number
CN114367685A
CN114367685A CN202210035430.1A CN202210035430A CN114367685A CN 114367685 A CN114367685 A CN 114367685A CN 202210035430 A CN202210035430 A CN 202210035430A CN 114367685 A CN114367685 A CN 114367685A
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CN
China
Prior art keywords
sliding block
thread
transmission
block
clamping
Prior art date
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Granted
Application number
CN202210035430.1A
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Chinese (zh)
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CN114367685B (en
Inventor
孙豪坤
何通
于翰文
刘鹏
刘良宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Xiaoya Precise Machinery Co ltd
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Shandong Xiaoya Precise Machinery Co ltd
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Priority to CN202210035430.1A priority Critical patent/CN114367685B/en
Publication of CN114367685A publication Critical patent/CN114367685A/en
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Publication of CN114367685B publication Critical patent/CN114367685B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • 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
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • 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
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention provides a workpiece clamping device, which comprises an upper chuck, an upper sliding block, a middle threaded disc, a lower chuck and a lower sliding block, wherein the upper chuck is fixed on the upper sliding block; the upper surface of the middle threaded disc is provided with an upper transmission thread; the lower surface of the middle threaded disc is provided with lower transmission threads; an upper thread structure in transmission fit with the upper transmission thread is arranged on the bottom surface of the upper sliding block; a lower thread structure in transmission fit with the lower transmission thread is arranged on the top surface of the lower sliding block; the rotation directions of the upper transmission thread and the lower transmission thread are opposite, and the middle thread disc simultaneously pushes the upper sliding block and the lower sliding block to move in the same direction along the radial direction through the upper transmission thread and the lower transmission thread by rotating the middle thread disc. This application drives the slider and the slider removes simultaneously through well thread disk to can grasp two upper and lower locating surfaces by the machined part simultaneously, and the clamping is fast with the dismantlement, has improved machining efficiency and precision greatly, has also improved the level of unifying of mass production simultaneously.

Description

Workpiece clamping device
Technical Field
The invention relates to the technical field of machining, in particular to a workpiece clamping device.
Background
With the development and progress of society, the processing requirements of mechanical parts are also increasing. And for many thin-wall parts, the defects of difficult clamping and positioning, low efficiency, low positioning precision, poor identity in batch production and the like exist.
Disclosure of Invention
The object of the present invention is to provide a workpiece clamping device to solve at least one of the above technical problems in the prior art.
In order to solve the above technical problem, the present invention provides a workpiece clamping device, including: the device comprises an upper chuck, an upper sliding block, a middle threaded disc, a lower chuck and a lower sliding block;
the upper sliding block is arranged on the upper chuck in a radially sliding manner;
the lower slide block is arranged on the lower chuck in a radially sliding manner;
the middle threaded disc is arranged between the upper chuck and the lower chuck;
the upper surface of the middle threaded disc is provided with an upper transmission thread; the lower surface of the middle threaded disc is provided with lower transmission threads;
an upper thread structure in transmission fit with the upper transmission thread is arranged on the bottom surface of the upper sliding block;
a lower thread structure in transmission fit with the lower transmission thread is arranged on the top surface of the lower sliding block;
the rotation directions of the upper transmission thread and the lower transmission thread are opposite, and the middle thread disc simultaneously pushes the upper sliding block and the lower sliding block to move in the same direction along the radial direction through the upper transmission thread and the lower transmission thread by rotating the middle thread disc.
This application drives the slider and the slider removes simultaneously through well thread disk to can grasp two upper and lower locating surfaces by the machined part simultaneously, and the clamping is fast with the dismantlement, has improved machining efficiency and precision greatly, has also improved the level of unifying of mass production simultaneously.
Furthermore, the clamping device also comprises an upper clamping block, one end of the upper clamping block is pivoted with the middle threaded disc, and the other end of the upper clamping block is pivoted with the upper sliding block; when the middle threaded disc rotates, the middle threaded disc drives one end of the upper clamping block to rotate along the circumferential direction, and the other end of the upper clamping block moves along the radial direction along with the upper sliding block.
Furthermore, the clamping device also comprises a lower clamping block, one end of the lower clamping block is pivoted with the middle threaded disc, and the other end of the lower clamping block is pivoted with the lower sliding block; when the middle threaded disc rotates, the middle threaded disc drives one end of the lower clamping block to rotate along the circumferential direction, and the other end of the lower clamping block moves along the radial direction along with the lower sliding block.
The invention can realize the clamping and fixing of 1-4 layers in the height direction by arranging the upper clamping block and/or the lower clamping block; especially when the part is the thin wall spare by the processing, can set up 4 layers of clamping face, the centre gripping of going up grip block, top shoe, lower slider and lower grip block promptly for the part atress is more even by the processing, has reduced the risk of local damage, has improved the product percent of pass. And, four layers of clamping structure move simultaneously, and it is efficient to go up unloading, has improved production efficiency.
Further, in the height direction, the upper clamping block is arranged above the upper sliding block.
Further, in the height direction, the lower clamping block is arranged below the lower sliding block.
Further, the upper clamping block and the lower clamping block are provided with clamping points or clamping working surfaces at one side close to the processed part. And the inner side end surfaces of the upper slide block and the lower slide block are clamping working surfaces.
Wherein the upper clamping block and the upper sliding block are arranged in pairs, the lower clamping block and the lower sliding block are arranged in pairs,
the upper clamping block and the upper sliding block are arranged in a vertically symmetrical mode with the lower clamping block and the lower sliding block, and the device is simple in structure, low in cost and convenient to popularize.
More preferably, in the circumferential direction, the upper clamping blocks and the lower clamping blocks are arranged in a staggered manner, and the upper sliding blocks and the lower sliding blocks are arranged in a staggered manner.
The asymmetrical arrangement in the circumferential direction is more beneficial to the dispersion of the clamping force applied to the processed part.
Furthermore, the device also comprises an actuating mechanism used for driving the middle threaded disc to rotate, the actuating mechanism comprises an actuating motor and a transmission gear, and a gear structure is arranged on the outer circumferential surface of the middle threaded disc.
When the middle threaded disc needs to be rotated, the execution motor drives the middle threaded disc to rotate through the transmission gear and the gear structure, so that the workpiece is clamped or loosened.
Further, the outer diameter of the middle threaded disc is smaller than the outer diameters of the upper chuck and the lower chuck, and the middle threaded disc retracts into a gap between the upper chuck and the lower chuck.
When the thread disc is rotated, the transmission gear extends into the crack and then is meshed with the gear structure on the middle thread disc. The meshed gear transmission structure is arranged in the crack and is safer, and unnecessary injuries caused by the fact that the body part of a worker or other foreign objects are rolled into the gear structure are avoided. And, the outer diameter of the middle threaded disc is preferably greater than the inner diameter of the upper and lower chucks.
Further, the power mechanism is used for driving the actuating mechanism to be close to or far away from the middle threaded disc.
The power mechanism has various forms, such as a pneumatic, electric or hydraulic telescopic mechanism, such as a cylinder, a hydraulic cylinder or an electric telescopic rod, or a swinging mechanism.
Preferably, the upper chuck is provided with an upper guide groove, the cross section shape of the upper sliding block is matched with the interface shape of the guide groove, and the upper sliding block is inserted into the upper guide groove;
the lower chuck is provided with a lower guide groove, the cross section of the lower slider is matched with the interface shape of the guide groove, and the lower slider is inserted in the lower guide groove.
Further, the lower chuck and the upper chuck are relatively fixedly arranged.
Further, the device also comprises a rotating mechanism for driving the upper chuck and the lower chuck to rotate.
Preferably, the rotating mechanism includes: a rotating motor and an intermediate transmission mechanism; the intermediate transmission mechanism has various forms, such as a gear transmission mechanism, a belt transmission mechanism and the like.
Preferably, the intermediate transmission mechanism comprises a belt transmission pair and a bevel gear transmission pair which are in transmission connection in sequence. The rotating motor drives the upper chuck and the lower chuck to rotate through the belt transmission pair and the bevel gear transmission pair in sequence.
Further, still include intermediate drive shaft, upper chuck and lower chuck are through intermediate drive shaft and bearing rotationally set up on the lathe body.
Wherein, the driven gear of the bevel gear transmission pair is sleeved on the middle transmission shaft.
Further, the device also comprises a demoulding mechanism used for lifting the processed wheel, wherein the demoulding mechanism comprises a telescopic mechanism and a tray; the tray is arranged at the bottom of the wheel to be processed and used for supporting the wheel to be processed; the telescopic mechanism is connected with the tray and used for supporting the wheel to be processed. The telescopic mechanism is in many forms, and is preferably a cylinder or a hydraulic cylinder.
Furthermore, the demoulding mechanism further comprises an ejector rod, the telescopic mechanism is arranged below the middle transmission shaft, the middle transmission shaft is arranged in a hollow mode, the lower end of the ejector rod is connected with the telescopic mechanism, and the upper end of the ejector rod penetrates through the hollow of the middle transmission shaft and is connected with the tray.
Further, the tray comprises a sleeve, the sleeve is fixedly arranged at the bottom of the tray, and the upper end of the ejector rod can be inserted into the sleeve in a relatively rotating mode.
When the wheel-mounted telescopic mechanism works, the tray, the sleeve and the wheel rotate synchronously, and the telescopic mechanism and the ejector rod keep relatively static.
Preferably, the upper end of the ejector rod is connected with the sleeve through a bearing. A bearing is arranged between the telescopic mechanism and the middle transmission shaft.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the workpiece clamping device provided by the invention, 1-4 layers of clamping and fixing in the height direction can be realized by arranging the upper clamping block and/or the lower clamping block; especially when the part is the thin wall spare by the processing, can set up 4 layers of clamping face, the centre gripping of going up grip block, top shoe, lower slider and lower grip block promptly for the part atress is more even by the processing, has reduced the risk of local damage, has improved the product percent of pass. And, four layers of clamping structure move simultaneously, and it is efficient to go up unloading, has improved production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a front view of a workpiece clamping device provided in an embodiment of the present invention;
FIG. 2 is a top view of a workpiece clamping device provided in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of a threaded disk in an embodiment;
FIG. 4 is a partial perspective view of the upper and lower chucks of FIG. 1;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a schematic mechanism diagram of a tray mechanism in the embodiment;
fig. 7 is a cross-sectional view AA of fig. 6.
Reference numerals:
10-upper chuck; 11-upper slide block; 12-an upper clamping block; 12 a-a pivot axis; 13-medium thread disc; 13 a-upper transmission thread; 13 b-lower drive screw; 13 c-gear configuration; 14-lower chuck; 15-lower slide block; 16-a lower clamping block; 20-an actuator; 21-an actuator motor; 22-a transmission gear; 23-a power mechanism; 30-a rotating mechanism; 31-a rotating electrical machine; 32-intermediate transmission mechanism; 33-intermediate drive shaft; 40-a demoulding mechanism; 41-a telescoping mechanism; 42-a tray; 43-a top rod; 44-sleeve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
As shown in fig. 1 to 5, the present embodiment provides a workpiece clamping device, including: an upper chuck 10, an upper slide 11, a middle threaded disc 13, a lower chuck 14 and a lower slide 15; the upper slide block 11 is arranged on the upper chuck 10 in a radially slidable manner; the lower slider 15 is provided on the lower chuck 14 slidably in the radial direction; the middle threaded disc 13 is arranged between the upper chuck 10 and the lower chuck 14; the upper surface of the middle threaded disc 13 is provided with an upper transmission thread 13 a; the lower surface of the middle threaded disc 13 is provided with lower transmission threads 13 b; an upper thread structure in transmission fit with the upper transmission thread is arranged on the bottom surface of the upper sliding block 11; a lower thread structure in transmission fit with the lower transmission thread is arranged on the top surface of the lower sliding block 15; the rotation directions of the upper transmission thread and the lower transmission thread are opposite, and by rotating the middle thread disc 13, the middle thread disc 13 simultaneously pushes the upper sliding block 11 and the lower sliding block 15 to move along the radial direction in the same direction through the upper transmission thread and the lower transmission thread.
This application drives the slider 11 and the removal of lower slider 15 simultaneously through well thread disc 13 to can grasp two upper and lower locating surfaces by the machined part simultaneously, and the clamping is fast with the dismantlement, has improved machining efficiency and precision greatly, has also improved the degree of identity of mass production simultaneously.
The present embodiment also includes an upper clamping block 12 and a lower clamping block 16. One end of the upper clamping block 12 is pivoted with the middle threaded disc 13 through a pivoting shaft 12a, and the other end of the upper clamping block 12 is pivoted with the upper sliding block 11; when the middle threaded disc 13 rotates, the middle threaded disc 13 drives one end of the upper clamping block 12 to rotate along the circumferential direction, and the other end of the upper clamping block 12 moves along the radial direction along with the upper sliding block 11. One end of the lower clamping block 16 is pivoted with the middle threaded disc 13 through a pivoting shaft 12a, and the other end of the lower clamping block 16 is pivoted with the lower sliding block 15; when the middle threaded disc 13 rotates, the middle threaded disc 13 drives one end of the lower clamping block 16 to rotate along the circumferential direction, and the other end of the lower clamping block 16 moves along the radial direction along with the lower sliding block 15.
The upper clamping block 12 and the lower clamping block 16 are arranged, so that 1-4 layers of clamping fixation in the height direction can be realized; especially when the processed part is a thin-walled part, 4 layers of clamping surfaces can be arranged, namely the upper clamping block 12, the upper sliding block 11, the lower sliding block 15 and the lower clamping block 16 are clamped, so that the stress of the processed part is more uniform, the risk of local damage is reduced, and the product percent of pass is improved. And, four layers of clamping structure move simultaneously, and it is efficient to go up unloading, has improved production efficiency.
The upper clamp block 12 is disposed above the upper slider 11 in the height direction. The lower clamp block 16 is disposed below the lower slider 15.
The upper clamping block 12 and the lower clamping block 16 are provided with clamping points or clamping working surfaces at one side close to the processed part. And the inner side end surfaces of the upper slide block 11 and the lower slide block 15 are clamping working surfaces.
Wherein, go up grip block 12 and last slider 11 and can set up in pairs, and grip block 16 and lower slider 15 can set up in pairs down, go up grip block 12 and last slider 11 and grip block 16 and lower slider 15 symmetry about setting up, its simple structure, with low costs, facilitate promotion.
More preferably, the upper clamping blocks 12 and the lower clamping blocks 16 are arranged in a staggered manner, and the upper sliding blocks 11 and the lower sliding blocks 15 are arranged in a staggered manner in the circumferential direction. The asymmetrical arrangement in the circumferential direction is more beneficial to the dispersion of the clamping force applied to the processed part.
The embodiment further comprises an actuating mechanism 20 for driving the middle threaded disc 13 to rotate, the actuating mechanism 20 comprises an actuating motor 21 and a transmission gear 22, and a gear structure 13c is arranged on the outer circumferential surface of the middle threaded disc 13.
When the middle threaded disc 13 needs to be rotated, the execution motor 21 drives the middle threaded disc 13 to rotate through a transmission gear and a gear structure, so that the clamping or the loosening of the workpiece is realized.
The outer diameter of the middle threaded disc 13 is smaller than the outer diameters of the upper chuck 10 and the lower chuck 14, and the middle threaded disc 13 is retracted in a gap between the upper chuck 10 and the lower chuck 14.
When the thread disc is rotated, the transmission gear extends into the crack and then is meshed with the gear structure on the middle thread disc 13. The meshed gear transmission structure is arranged in the crack and is safer, and unnecessary injuries caused by the fact that the body part of a worker or other foreign objects are rolled into the gear structure are avoided.
The present embodiment further comprises a power mechanism 23 for moving the actuator 20 closer to or away from the middle threaded plate 13. The power mechanism 23 may be in various forms, such as a pneumatic, electric or hydraulic telescopic mechanism, such as a cylinder, a hydraulic cylinder or an electric telescopic rod, or a swing mechanism.
Preferably, an upper guide groove is formed in the upper chuck 10, the shape of the cross section of the upper sliding block 11 is matched with the shape of the interface of the guide groove, and the upper sliding block 11 is inserted into the upper guide groove; the lower chuck 14 is provided with a lower guide groove, the cross section shape of the lower sliding block 15 is matched with the interface shape of the guide groove, and the lower sliding block 15 is inserted into the lower guide groove.
Further, the lower chuck 14 and the upper chuck 10 are fixedly disposed with respect to each other.
Further, a rotating mechanism 30 for driving the upper chuck 10 and the lower chuck 14 to rotate is also included.
Preferably, the rotating mechanism 30 includes: a rotary motor 31 and an intermediate transmission mechanism 32; the intermediate drive 32 can be of many forms, such as a gear drive, a belt drive, etc.
Preferably, the intermediate transmission mechanism comprises a belt transmission pair and a bevel gear transmission pair which are in transmission connection in sequence. The rotating motor drives the upper chuck 10 and the lower chuck 14 to rotate through a belt transmission pair and a bevel gear transmission pair.
As shown in fig. 6 to 7, the present embodiment further includes an intermediate transmission shaft 33, and the upper chuck 10 and the lower chuck 14 are rotatably provided on the machine body through the intermediate transmission shaft 33 and the bearings. Wherein, the driven gear of the bevel gear transmission pair is sleeved on the middle transmission shaft.
As shown in fig. 6-7, the present embodiment further includes a demolding mechanism 40 for lifting the wheel to be processed, the demolding mechanism 40 includes a telescoping mechanism 41 and a tray 42; the tray 42 is arranged at the bottom of the wheel to be processed and used for supporting the wheel to be processed; the telescopic mechanism 41 is connected with the tray 42 and is used for lifting the wheel to be processed. The telescopic mechanism 41 is in many forms, and is preferably a pneumatic cylinder or a hydraulic cylinder.
Further, the demolding mechanism 40 further comprises a top rod 43, the telescopic mechanism 41 is arranged below the middle transmission shaft, the middle transmission shaft is arranged in a hollow mode, the lower end of the top rod is connected with the telescopic mechanism 41, and the upper end of the top rod penetrates through the hollow of the middle transmission shaft to be connected with the tray 42.
The embodiment comprises a sleeve 44, wherein the sleeve 44 is fixedly arranged at the bottom of the tray 42, and the upper end of the ejector rod is relatively rotatably inserted into the sleeve.
During operation, the tray 42 and the sleeves rotate synchronously with the wheels, and the telescoping mechanism 41 and the mandrills are kept relatively static.
Preferably, the upper end of the top rod 43 is connected with the sleeve 44 through a bearing. A bearing is arranged between the telescoping mechanism 41 and the intermediate transmission shaft.
According to the workpiece clamping device provided by the invention, 1-4 layers of clamping fixation in the height direction can be realized by arranging the upper clamping block 12 and/or the lower clamping block 16; especially when the processed part is a thin-walled part, 4 layers of clamping surfaces can be arranged, namely the upper clamping block 12, the upper sliding block 11, the lower sliding block 15 and the lower clamping block 16 are clamped, so that the stress of the processed part is more uniform, the risk of local damage is reduced, and the product percent of pass is improved. And, four layers of clamping structure move simultaneously, and it is efficient to go up unloading, has improved production efficiency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A workpiece clamping device, comprising: the device comprises an upper chuck, an upper sliding block, a middle threaded disc, a lower chuck and a lower sliding block;
the upper sliding block is arranged on the upper chuck in a radially sliding manner;
the lower slide block is arranged on the lower chuck in a radially sliding manner;
the middle threaded disc is arranged between the upper chuck and the lower chuck;
the upper surface of the middle threaded disc is provided with an upper transmission thread; the lower surface of the middle threaded disc is provided with lower transmission threads;
an upper thread structure in transmission fit with the upper transmission thread is arranged on the bottom surface of the upper sliding block;
a lower thread structure in transmission fit with the lower transmission thread is arranged on the top surface of the lower sliding block;
the rotation directions of the upper transmission thread and the lower transmission thread are opposite, and the middle thread disc simultaneously pushes the upper sliding block and the lower sliding block to move in the same direction along the radial direction through the upper transmission thread and the lower transmission thread by rotating the middle thread disc.
2. The workpiece clamping device according to claim 1, further comprising an upper clamping block, wherein one end of the upper clamping block is pivotally connected to the middle threaded plate, and the other end of the upper clamping block is pivotally connected to the upper sliding block; when the middle threaded disc rotates, the middle threaded disc drives one end of the upper clamping block to rotate along the circumferential direction, and the other end of the upper clamping block moves along the radial direction along with the upper sliding block.
3. The workpiece clamping device according to claim 2, further comprising a lower clamping block, wherein one end of the lower clamping block is pivotally connected to the middle threaded disc, and the other end of the lower clamping block is pivotally connected to the lower slider; when the middle threaded disc rotates, the middle threaded disc drives one end of the lower clamping block to rotate along the circumferential direction, and the other end of the lower clamping block moves along the radial direction along with the lower sliding block.
4. The workpiece clamping device according to claim 2, wherein the upper clamp block is disposed above the upper slider in a height direction.
5. The workpiece clamping device according to claim 3, wherein the lower clamp block is disposed below the lower slider in a height direction.
6. The workpiece clamping device according to claim 3, wherein the upper clamping block and the lower clamping block are provided with clamping points or clamping working surfaces at one side close to the processed part; the inner side end faces of the upper sliding block and the lower sliding block are clamping working faces.
7. The workpiece clamping device of claim 3, wherein said upper and upper shoes are arranged in pairs and said lower and lower shoes are arranged in pairs.
8. The workpiece clamping device according to claim 3, wherein the upper and lower clamping blocks are staggered in the circumferential direction, and the upper and lower sliders are staggered.
9. The workpiece clamping device as recited in claim 1, further comprising an actuator for driving the middle threaded disk to rotate, wherein the actuator comprises an actuator motor and a transmission gear, and a gear structure is arranged on the outer circumferential surface of the middle threaded disk.
10. The workholding apparatus of claim 9 wherein the outer diameter of the middle threaded disc is smaller than the outer diameters of the upper and lower chucks, the middle threaded disc being retracted in the gap between the upper and lower chucks.
CN202210035430.1A 2022-01-13 2022-01-13 Workpiece clamping device Active CN114367685B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN114367685B CN114367685B (en) 2023-05-26

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Publication number Priority date Publication date Assignee Title
DE19920748A1 (en) * 1999-05-05 2000-11-09 Guehring Joerg Clamping system for high speeds
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