CN111843542A - Quick self-locking type powerful clamp with adjustable clamping height for groove or hole - Google Patents

Quick self-locking type powerful clamp with adjustable clamping height for groove or hole Download PDF

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Publication number
CN111843542A
CN111843542A CN202010632439.1A CN202010632439A CN111843542A CN 111843542 A CN111843542 A CN 111843542A CN 202010632439 A CN202010632439 A CN 202010632439A CN 111843542 A CN111843542 A CN 111843542A
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CN
China
Prior art keywords
hole
rotating shaft
base plate
locking
clamp
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
Application number
CN202010632439.1A
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Chinese (zh)
Inventor
韩利萍
崔高升
赵娜
周斌
董亮
武瑞刚
刘鹏
李晟
乔迎军
程玉萍
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Shanxi Aerospace Qinghua Equipment Co Ltd
Original Assignee
Shanxi Aerospace Qinghua Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanxi Aerospace Qinghua Equipment Co Ltd filed Critical Shanxi Aerospace Qinghua Equipment Co Ltd
Priority to CN202010632439.1A priority Critical patent/CN111843542A/en
Publication of CN111843542A publication Critical patent/CN111843542A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices 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
    • B23Q3/06Work-clamping means
    • B23Q3/062Work-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)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The invention discloses an adjustable self-locking type powerful clamp for a groove or a hole, which comprises a connecting seat, an eccentric camshaft, a base plate, a rotating shaft, a pressing rod and an adjusting pressing head, wherein the connecting seat is arranged at the bottom of the base plate; an installation part is arranged at one end of the pressure lever, a base plate is arranged in the installation part, a first rotating shaft hole and an adjusting long hole are formed in the side wall of the installation part, a rotating shaft penetrates through the rotating shaft hole, and an eccentric cam shaft penetrates through the adjusting long hole; a second rotating shaft hole and an eccentric wheel are arranged on the base plate, a rotating shaft penetrates through the second rotating shaft hole, the rotating center of the eccentric wheel is eccentrically arranged, and an eccentric cam shaft is arranged at the rotating center; the device has simple and light structure, and can realize the functions of rapidness, great force, self-adaption and self-locking.

Description

Quick self-locking type powerful clamp with adjustable clamping height for groove or hole
Technical Field
The invention belongs to the technical field of numerical control assembly processing clamping devices, and particularly relates to an adjustable self-locking type powerful clamp for a groove or a hole.
Background
Numerical control milling is one of important means for industrial production. The numerical control programming and the forming cutter are matched for use, so that the requirement of rapid machining is met, the fact that the pure cutting time of the equipment is less through the analysis of the whole process of the product is found, and the main reason is that the clamping preparation time of the equipment machining product in the early stage is longer, so that the overall machining efficiency of the equipment is not high.
The traditional processing and clamping mode is that a T-shaped groove of equipment is combined with a T-shaped nut, a screw rod, a nut and a pressing plate for application, and a processed workpiece is compressed. Due to different structural forms and sizes of products, a universal screw pressing plate mode needs to be designed and used in a targeted mode. In addition, the product pressing mode is carried out by a screw pressing plate mode, a nut arranged on a middle screw rod of the pressing plate is used for rotating and pressing, and the pressing force of the nut on the workpiece is half or less than the axial pressing force applied to the nut. The combined use of the operation process has longer auxiliary time, and the output of operators is larger. The defects of the traditional screw pressing plate machining and clamping mode are explained.
Other dress card modes are for including modes such as flat tongs, steel ball fast lock, hydraulic tong, but have adaptability problem or operating time longer scheduling problem equally, for example the steel ball fast lock needs and uses jointly with the basic locating plate to special product design, and hydraulic tong needs special pipeline and has the pressure reduction etc. that reveals in the course of working fluid and cause, and its specialty is stronger, and the general type is relatively poor.
Disclosure of Invention
The adjustable self-locking type powerful clamp overcomes the defects of the prior art, is an adjustable self-locking type powerful clamp for a groove or a hole, has a simple and light structure, and can realize the functions of rapidness, great force, self-adaption and self-locking.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the adjustable self-locking type powerful clamp for the groove or the hole comprises a connecting seat, an eccentric cam shaft, a base plate, a rotating shaft, a pressing rod and an adjusting pressing head, wherein the connecting seat is arranged at the bottom of the base plate, the pressing rod is sleeved on the base plate, the eccentric cam shaft and the rotating shaft are arranged between the pressing rod and the base plate, and the adjusting pressing head is arranged at the outer end of the pressing rod.
Furthermore, an installation part is arranged at one end of the pressure lever, a base plate is arranged in the installation part, a first rotating shaft hole and an adjusting long hole are formed in the side wall of the installation part, a rotating shaft penetrates through the rotating shaft hole, and an eccentric cam shaft penetrates through the adjusting long hole;
the base plate is provided with a second rotating shaft hole and an eccentric wheel, a rotating shaft penetrates through the second rotating shaft hole, the rotating center of the eccentric wheel is eccentrically arranged, and an eccentric cam shaft is arranged at the rotating center.
Further, the eccentric cam shaft and the rotating shaft both penetrate through the base plate and the pressing rod.
Further, eccentric camshaft outer end is provided with connecting portion, the joint can be dismantled to connecting portion has the spanner.
Furthermore, two sides of the connecting part are provided with connecting planes.
Furthermore, the connecting part can also be provided with a lever connecting hole in a penetrating manner, and a lever can be connected in the lever connecting hole.
Furthermore, a limiting plate is further arranged on the eccentric cam shaft and is located on the outer side of the pressure rod.
Furthermore, the cross section of the connecting seat is T-shaped and comprises a clamping seat and a connecting column, and the clamping seat is positioned at the bottom of the connecting column.
Furthermore, the center of the rotating shaft and the axial center of the connecting seat are positioned on the same vertical line.
Furthermore, the adjusting compression head comprises a compression rod and a compression seat, the compression rod is connected with a compression rod, and the compression seat is arranged at the bottom of the compression rod.
Furthermore, the compressing rod is an external thread rod, a compressing hole is formed in the end portion of the pressing rod, and the compressing rod is in threaded connection with the compressing hole.
Furthermore, the bottom of the pressing seat is also provided with an elastic clamping layer.
Further, the top of the substrate is also provided with a handheld hole.
Furthermore, a handheld part can be arranged on the top of the substrate, and the handheld hole is located in the handheld part.
Compared with the prior art, the invention has the following beneficial effects:
the clamp structure can quickly approach a processed product, quickly compress the product, and has adjustable compression height, small acting force and pressure generation under the basic condition of utilizing the T-shaped groove or hole of the existing equipment.
1) The problems that the traditional screw pressing plate assembly is dispersed, the combination operation time is long, the utilization rate of a numerical control machine tool is limited, the manual force is large, and the pressing force is small are solved;
2) the problems that the flat tongs need to be placed firstly according to the product structure, the large structural part is difficult to hoist and mount, and the adaptability is poor are solved;
3) the problem of potential machining safety hazards and the problem of applicability caused by the fact that a special pipeline is needed for the hydraulic clamp or the problem of internal leakage in the use process of the hydraulic clamp with oil is solved;
4) the problem of ball lock high-speed grip need with special product processing of product special positioning board, basic connecting plate etc. combination use, be not applicable to the small batch product of frequently trading the product is solved.
Drawings
Fig. 1 is a schematic structural diagram of a device holding state in embodiment 1 of the present invention.
Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.
Fig. 3 is a structural diagram of an apparatus in an open state according to embodiment 1 of the present invention.
FIG. 4 is a schematic top view of a pressing rod structure of the device according to embodiment 1 of the present invention.
Fig. 5 is a schematic view of the working state of the device in embodiment 1 of the present invention.
Fig. 6 is a schematic structural diagram of an apparatus in embodiment 2 of the present invention.
Fig. 7 is a schematic view of a connecting portion structure of an eccentric cam shaft in the device according to embodiment 2 of the present invention.
The clamping device comprises a connecting seat 1, an eccentric camshaft 2, a base plate 3, a rotating shaft 4, a pressure lever 5, an adjusting pressing head 6, an adjusting long hole 7, an eccentric wheel 8, a mounting part 9, a connecting part 10, a clamping seat 11, a connecting column 12, a connecting plane 13, a lever connecting hole 14, a limiting plate 15, a pressing rod 16, a pressing seat 17, an elastic clamping layer 18, a handheld hole 19, a handheld part 20, a pressing hole 21, a clamped workpiece 23 and a pin 24.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
Example 1
The adjustable self-locking type powerful clamp for the groove or the hole comprises a connecting seat 1, an eccentric cam shaft 2, a base plate 3, a rotating shaft 4, a pressing rod 5 and an adjusting pressing head 6, wherein the connecting seat 1 is arranged at the bottom of the base plate 3, the pressing rod 5 is sleeved on the base plate 3, the eccentric cam shaft 2 and the rotating shaft 4 are arranged between the pressing rod 5 and the base plate 3, and the adjusting pressing head 6 is arranged at the outer end of the pressing rod 5. As shown in fig. 1-4.
An installation part 9 is arranged at one end of the pressure lever 5, a base plate 3 is arranged in the installation part 9, a first rotating shaft hole and an adjusting long hole 7 are arranged on the side wall of the installation part, a rotating shaft 4 penetrates through the rotating shaft hole, and an eccentric cam shaft 2 penetrates through the adjusting long hole 7;
the base plate is provided with a second rotating shaft hole and an eccentric wheel 8, a rotating shaft 4 penetrates through the second rotating shaft hole, the rotating center of the eccentric wheel 8 is eccentrically arranged, and the rotating center is provided with an eccentric cam shaft 2.
The eccentric camshaft 2 and the rotating shaft 4 both penetrate the base plate 3 and the pressure lever 5.
The 2 outer ends of eccentric camshaft are provided with connecting portion, the joint can be dismantled to connecting portion has the spanner.
The eccentric camshaft 2 is further provided with a limiting plate 15, and the limiting plate 15 is located on the outer side of the pressure rod.
The cross section of the connecting seat 1 is T-shaped and comprises a clamping seat 11 and a connecting column 12, wherein the clamping seat 11 is positioned at the bottom of the connecting column 12.
The center of the rotating shaft 4 and the axial center of the connecting seat 1 are positioned on the same vertical line.
The adjusting compression head 6 comprises a compression rod 16 and a compression seat 17, the compression rod is connected with a compression rod 5, and the bottom of the compression rod 16 is provided with the compression seat 17.
The pressing rod 16 is an external thread rod, a pressing hole 21 is formed in the end portion of the pressing rod, and the pressing rod is in threaded connection with the pressing hole. And is held in place by a retaining nut 22.
The top of the base plate 3 is also provided with a hand-held hole 19.
Example 2
As shown in the figures 6-7 of the drawings,
in the device of embodiment 1, a handle 20 may be further disposed on the top of the substrate 3, and a handle hole is disposed on the handle.
The bottom of the pressing seat 17 is also provided with an elastic clamping layer 18.
The two sides of the connecting part 10 are provided with connecting planes 13.
The connecting portion 10 may further be provided with a lever connecting hole 14 through which a lever may be connected.
The powerful clamp has the structural characteristics that: the clamp clamping force is formed by clamping an eccentric camshaft through a hand-held lever for primary reinforcement, rotating the eccentric camshaft to form secondary reinforcement, driving a pressure rod to rotate around a rotating shaft by the eccentric camshaft to form tertiary reinforcement, and contacting a workpiece through an adjustable pressure block to realize the powerful clamping function of the workpiece;
in actual use, the clamp is mounted by rapidly pushing the clamp to a workpiece clamping position through the matching of a connecting seat or a connecting rod arranged below a clamp base plate and a T-shaped groove or a hole on a machine tool working table; in order to stabilize the position of the clamped workpiece, the clamped workpiece can be limited by the pin 24, as shown in fig. 5.
The clamp is placed in a T-shaped groove of a platform of large-scale numerical control machining equipment, the distance from the pressing surface of the pressing head to the distance from the working table surface is adjusted in advance according to the clamping height of a product and is 1 mm-2 mm smaller than the height of a clamped workpiece, and the clamp is used for increasing the pre-pressure of the workpiece.
The eccentric cam shaft rotates clockwise by 5 degrees and is arranged on the clamp base plate, so that the eccentric cam shaft vertically moves upwards relative to the working table surface, the pressing rod is driven to rotate clockwise around the rotating shaft, and the pressing head is adjusted to press a workpiece through the bolt at the head.
The cam surface of the eccentric cam shaft is contacted with the inner hole surface of the base plate, so that the workpiece is pressed fast and self-locked;
the clamp mainly has two working principles, wherein the first is to realize three-stage reinforcement by utilizing a lever principle; secondly, a dead point structure is formed by utilizing an inclined plane self-locking formed by the fact that the included angle between the tangential angle of the cam and the contact surface of the inner hole of the base plate is less than 5 degrees or the included angle is 0 degree (the pressure vertically points to the plane of the workbench) in the limit state.
Compared with the prior art, the clamp has the outstanding characteristics that:
1) the operation is labor-saving and simple, and the generated pressure is large. The pressure generated by the preliminary calculation is 2 times of the pressure of the same screw pressing plate, the theoretical operation time is not more than 10 seconds and is far less than the operation time of other clamps.
2) The manufacturing and using cost is low. Compared with flat tongs, hydraulic jacks, steel ball locks and other products, the manufacturing difficulty is low, the comprehensive use cost is low, and corresponding auxiliary matching tools are not needed.
3) The maintenance and the storage are convenient. The clamp is in an integral use mode, is light in weight, small in size and wide in clamping range, is very suitable for single-piece small-batch flexible production equipment units, facilitates factory site standardized positioning management, and is simple in product part maintenance.
4) Aiming at the clamp, the blind hole is formed in the lower plane of the connecting seat and matched with the screw rod for lengthening, or the connecting seat is replaced by a connecting rod and directly matched with the equipment hole system platform for use.
5) The clamp application range can be further expanded to clamp welding operation or an automatic welding system of a welding robot, and the rapid positioning operation of workpieces is realized.
6) The clamp is matched with the hole tying plate with the T-shaped groove to be used in combination with the T-shaped groove of the original machine tool equipment, the expansion function of multi-station and quick positioning and clamping operation of parts is realized, and the comprehensive utilization rate of the equipment is effectively improved.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the 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.

Claims (10)

1. The adjustable self-locking type powerful clamp for the groove or the hole is characterized by comprising a connecting seat (1), an eccentric cam shaft (2), a base plate (3), a rotating shaft (4), a pressing rod (5) and an adjusting pressing head (6), wherein the connecting seat (1) is arranged at the bottom of the base plate (3), the pressing rod (5) is sleeved on the base plate (3), the eccentric cam shaft (2) and the rotating shaft (4) are arranged between the pressing rod (5) and the base plate (3), and the adjusting pressing head (6) is arranged at the outer end of the pressing rod (5).
2. The adjustable self-locking powerful clamp for the grooves or holes, according to claim 1, is characterized in that one end of the pressure lever (5) is provided with an installation part (9), a base plate (3) is arranged in the installation part (9), the side wall of the installation part is provided with a first rotating shaft hole and an adjusting long hole (7), a rotating shaft (4) is arranged in the rotating shaft hole in a penetrating manner, and an eccentric cam shaft (2) is arranged in the adjusting long hole (7) in a penetrating manner;
The base plate is provided with a second rotating shaft hole and an eccentric wheel (8), a rotating shaft (4) penetrates through the second rotating shaft hole, the rotating center of the eccentric wheel (8) is eccentrically arranged, and the rotating center is provided with an eccentric cam shaft (2).
3. Adjustable self-locking power tong for slots or holes according to claim 2, characterized in that the eccentric cam shaft (2) and the swivel shaft (4) both pass through the base plate (3) and the pressure bar (5).
4. Adjustable self-locking powerful pliers for slots or holes according to claim 2, characterized in that the outer end of the eccentric cam shaft (2) is provided with a connecting portion (10), two opposite sides of the connecting portion are provided with connecting planes (13), and the connecting portion is detachably clamped with a wrench.
5. Adjustable self-locking power tongs for slots or holes according to claim 2, characterised in that the connecting part is also provided with a lever connecting hole (14) through which a lever can be connected.
6. Adjustable self-locking powerful clamp for grooves or holes according to claim 1, characterized in that a limiting plate (15) is further arranged on the eccentric cam shaft (2), and the limiting plate (15) is located outside the pressure lever.
7. Adjustable self-locking powerful pliers for slots or holes according to claim 1 or 2, characterized in that the connecting socket (1) is T-shaped in cross section and comprises a clamping seat (11) and a connecting post (12), the clamping seat (11) being located at the bottom of the connecting post (12).
8. Adjustable self-locking power clamp for slots or holes according to claim 1, characterized in that the center of the swivel shaft (4) is located on the same vertical line as the axial center of the connecting base (1).
9. Adjustable self-locking powerful clamp for slots or holes according to claim 1, characterized in that the adjustable clamping head (6) comprises a clamping rod (16) and a clamping seat (17), the clamping rod is connected with a compression bar (5), and the clamping seat (17) is arranged at the bottom of the clamping rod (16).
10. Adjustable self-locking high-force clamp for slots or holes according to claim 1, characterised in that the base plate (3) is also provided with a hand-held hole (19) at the top.
CN202010632439.1A 2020-07-03 2020-07-03 Quick self-locking type powerful clamp with adjustable clamping height for groove or hole Pending CN111843542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010632439.1A CN111843542A (en) 2020-07-03 2020-07-03 Quick self-locking type powerful clamp with adjustable clamping height for groove or hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010632439.1A CN111843542A (en) 2020-07-03 2020-07-03 Quick self-locking type powerful clamp with adjustable clamping height for groove or hole

Publications (1)

Publication Number Publication Date
CN111843542A true CN111843542A (en) 2020-10-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113523378A (en) * 2021-08-12 2021-10-22 湖南精专自动化技术有限公司 Accurate positioning fixture for milling inner and outer cutting edges

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381372B1 (en) * 2009-03-26 2013-02-26 Randall E. Arnall Camming clamp for gunwales or pontoon-boat rails
CN202804685U (en) * 2012-08-08 2013-03-20 天津市汉沽德源机械制造有限公司 Special fixture used for processing vehicle cooling water pump shell oil charging hole
CN209754605U (en) * 2019-04-25 2019-12-10 四川优机实业股份有限公司 Cam type rapid pressing structure
CN210010707U (en) * 2019-06-06 2020-02-04 黄河科技学院 Symmetrical quick clamping fixture
CN210616308U (en) * 2019-09-27 2020-05-26 武汉三川精密模具有限公司 Fixing device of automobile part detection die
CN212552804U (en) * 2020-07-03 2021-02-19 山西航天清华装备有限责任公司 Adjustable self-locking type powerful clamp for groove or hole

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381372B1 (en) * 2009-03-26 2013-02-26 Randall E. Arnall Camming clamp for gunwales or pontoon-boat rails
CN202804685U (en) * 2012-08-08 2013-03-20 天津市汉沽德源机械制造有限公司 Special fixture used for processing vehicle cooling water pump shell oil charging hole
CN209754605U (en) * 2019-04-25 2019-12-10 四川优机实业股份有限公司 Cam type rapid pressing structure
CN210010707U (en) * 2019-06-06 2020-02-04 黄河科技学院 Symmetrical quick clamping fixture
CN210616308U (en) * 2019-09-27 2020-05-26 武汉三川精密模具有限公司 Fixing device of automobile part detection die
CN212552804U (en) * 2020-07-03 2021-02-19 山西航天清华装备有限责任公司 Adjustable self-locking type powerful clamp for groove or hole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113523378A (en) * 2021-08-12 2021-10-22 湖南精专自动化技术有限公司 Accurate positioning fixture for milling inner and outer cutting edges
CN113523378B (en) * 2021-08-12 2024-05-31 湖南精专自动化技术有限公司 Accurate positioning fixture for milling inner and outer cutting edges

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