CN103737391A - Limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure - Google Patents
Limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure Download PDFInfo
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- CN103737391A CN103737391A CN201310685547.5A CN201310685547A CN103737391A CN 103737391 A CN103737391 A CN 103737391A CN 201310685547 A CN201310685547 A CN 201310685547A CN 103737391 A CN103737391 A CN 103737391A
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- Prior art keywords
- spring
- clamping fixture
- screw rod
- fixed block
- fixture seat
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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
- B23Q3/02—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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
- B23Q17/005—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a force, a pressure or a deformation
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure, and belongs to the field of fixtures. The limitation looseness-preventing type high-accuracy fine-adjustment fixture comprises a fixture holder, a left fixing block, a left screw, a left clamping block, a right clamping block, a guide rod and a right fixing block, wherein the fixture holder is provided with a dovetail groove, and the two ends of the dovetail groove are provided with the left fixing block and the right fixing block respectively. The limitation looseness-preventing type high-accuracy fine-adjustment fixture further comprises a driven connection rod, a left spring, a driving connection rod, a right spring, a transmission rod, a right screw, a handle, limitation looseness-preventing devices and a dial, wherein the right screw and the left screw are respectively provided with one limitation looseness-preventing device, and the handle is provided with the dial. The limitation looseness-preventing type high-accuracy fine-adjustment fixture solves the problems that an existing fixture is not prone to fine adjustment, low in locating accuracy and prone to loosing, and has clamping force not easy to control, and has the advantages of being simple in structure, reasonable in design and easy to manufacture.
Description
Technical field
The invention belongs to fixture field, more particularly, relate to a kind of restriction of the pressure controllable type for piece-holder anti-loosing type high precision fine tuning fixture.
Background technology
In machine industry, utilize lathe to process all kinds of workpiece, utilize clamping device that workpiece is fixed adding man-hour requirement, thereby realize cylindrical, end face, screw thread and the axial machining such as cut-out.For the not high part of machining accuracy, generally can directly on platen face, adjust and realize positioning and clamping, the position of part is determined in the setting that by machining coordinate is then.And for the higher workpiece of requirement on machining accuracy, must repeatedly proofread the relative position of workpiece and lathe tool, therefore must increase positioning precision.Plain clamp can not be finely tuned simultaneously, causes the control of clamping force to be difficult for, and too pine does not have positioning action, too tightly damages surface of the work, even compression failure workpiece.The vibration of lathe and the effect of cutting force in process simultaneously, causes fixture to occur loosening, and then because piece-holder power causes the loosening of workpiece not, has reduced machining accuracy, when serious, will cause workpiece to be thrown out of the generation of accident.
Summary of the invention
The fine setting causing for existing fixture is difficult for, positioning precision is not high, easy loosening, the uppity problem of chucking power, the invention provides a kind of pressure controllable type restriction anti-loosing type high precision fine tuning fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A kind of pressure controllable type restriction anti-loosing type high precision fine tuning fixture, comprises clamping fixture seat, left fixed block, left screw rod, left clamp, right clamp, guide rod, right fixed block, on clamping fixture seat, be provided with dovetail groove, and at dovetail groove two ends, be provided with left fixed block and right fixed block, and left fixed block is provided with screwed hole, and right fixed block is provided with unthreaded hole, left clamp and right clamp are all assemblied in the dovetail groove on clamping fixture seat, left screw rod one end and left clamp are connected, the threaded engagement of the other end and left fixed block, and guide rod one end and right clamp are connected, the other end is assemblied in the unthreaded hole of right fixed block, also comprises follower link, left spring, drive connecting rod, right spring, transmission lever, right screw rod, handle, restriction locking device, dial, on described right screw rod and left screw rod, be equipped with restriction locking device, one end of described follower link is articulated with on clamping fixture seat, the other end is connected with drive connecting rod by transmission lever, its one end near hinge is connected with guide rod, described drive connecting rod one end is articulated with on clamping fixture seat, the other end is connected with right screw rod, described right screw rod is assemblied in the screwed hole of clamping fixture seat, and in its one end, handle is set, and described left spring one end is connected with follower link upper end, the other end is connected with clamping fixture seat, described right spring one end is connected with drive connecting rod lower end, and the other end is connected with clamping fixture seat, and described handle is provided with dial.
Described restriction locking device is comprised of ratchet, roller, lever, spring, bolt, described ratchet is assemblied on left screw rod by key, the quantity of described lever is 2, divide and be located at ratchet both sides, and be all hinged on clamping fixture seat, and away from one end of clamping fixture seat, unthreaded hole be set at lever, described roller is connected through the hinge on lever, the two ends of described spring are connected on the lever of ratchet both sides, and described bolt is through the reserved unthreaded hole of lever.
Described spring is extension spring, and described dial is provided with scale at its edge.
Than prior art, beneficial effect of the present invention is:
(1) the present invention utilizes lever principle, and larger input is converted into minimum displacement, and the convenient trace of realizing regulates, and makes positioning precision be improved simultaneously.
(2) the present invention utilizes ratchet and roller to realize the locking effect to left screw rod and right screw rod, in the course of the work, the locking to screw rod due to ratchet and roller, has played the locking of left screw rod and right screw rod, and then makes fixture can not occur becoming flexible because of the effect of vibration and cutting force.
(3) the present invention adopts two symmetrical rollers, has eliminated radial load screw rod being caused because of locking effect, has improved the service life of fixture.
(4) the present invention is provided with dial on handle, can be the in the situation that of clamp fast moving, and assurance clamp in OK range, is unlikely to damage workpiece to the pressure of workpiece; During simultaneously Workpiece clamping for unlike material and size, the reading of dial is made statistical table, convenient while operating in the future as contrasting, thereby increase work efficiency.
(5) the present invention is simple in structure, reasonable in design, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the cutaway view along A-A line in Fig. 1;
Fig. 3 is that B in Fig. 1 is to view.
In figure: 1-clamping fixture seat, 2-left fixed block, 3-left screw rod, 4-left clamp, 5-right clamp, 6-guide rod, 7-right fixed block, 8-follower link, 9-left spring, 10-drive connecting rod, 11-right spring, 12-transmission lever, 13-right screw rod, 14-handle, 15-restriction locking device, 16-ratchet, 17-roller, 18-lever, 19-spring, 20-bolt, 21-dial.
The specific embodiment
Below in conjunction with accompanying drawing, describe the present invention.
As Fig. 1, Fig. 2, shown in Fig. 3, pressure controllable type restriction anti-loosing type high precision fine tuning fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, guide rod 6, right fixed block 7, on clamping fixture seat 1, be provided with dovetail groove, and at dovetail groove two ends, be provided with left fixed block 2 and right fixed block 7, and left fixed block 2 is provided with screwed hole, and right fixed block 7 is provided with unthreaded hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, and guide rod 6 one end and right clamp 5 are connected, the other end is assemblied in the unthreaded hole of right fixed block 7, also comprises follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, handle 14, restriction locking device 15, dial 21, on described right screw rod 13 and left screw rod 3, be equipped with restriction locking device 15, one end of described follower link 8 is articulated with on clamping fixture seat 1, the other end is connected with drive connecting rod 10 by transmission lever 12, its one end near hinge is connected with guide rod 6, described drive connecting rod 10 one end are articulated with on clamping fixture seat 1, the other end is connected with right screw rod 13, described right screw rod 13 is assemblied in the screwed hole of clamping fixture seat 1, and in its one end, handle 14 is set, described left spring 9 one end are connected with follower link 8 upper ends, the other end is connected with clamping fixture seat 1, described right spring 11 one end are connected with drive connecting rod 10 lower ends, the other end is connected with clamping fixture seat 1, described handle 14 is provided with dial 21.
Described restriction locking device 15 is comprised of ratchet 16, roller 17, lever 18, spring 19, bolt 20, described ratchet 16 is assemblied on left screw rod 3 by key, the quantity of described lever 18 is 2, divide and be located at ratchet 16 both sides, and be all hinged on clamping fixture seat 1, and away from one end of clamping fixture seat 1, unthreaded hole is set at lever 18, described roller 17 is connected through the hinge on lever 18, the two ends of described spring 19 are connected on the lever 18 of ratchet 16 both sides, and described bolt 20 is through the reserved unthreaded hole of lever 18.
Described spring 19 is extension spring, and described dial 21 is provided with scale at its edge.
As Fig. 1, Fig. 2, shown in Fig. 3, pressure controllable type restriction anti-loosing type high precision fine tuning fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, guide rod 6, right fixed block 7, on clamping fixture seat 1, be provided with dovetail groove, and at dovetail groove two ends, be provided with left fixed block 2 and right fixed block 7, and left fixed block 2 is provided with screwed hole, and right fixed block 7 is provided with unthreaded hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, and guide rod 6 one end and right clamp 5 are connected, the other end is assemblied in the unthreaded hole of right fixed block 7, also comprises follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, handle 14, restriction locking device 15, dial 21, on described right screw rod 13 and left screw rod 3, be equipped with restriction locking device 15, one end of described follower link 8 is articulated with on clamping fixture seat 1, the other end is connected with drive connecting rod 10 by transmission lever 12, its one end near hinge is connected with guide rod 6, described drive connecting rod 10 one end are articulated with on clamping fixture seat 1, the other end is connected with right screw rod 13, described right screw rod 13 is assemblied in the screwed hole of clamping fixture seat 1, and in its one end, handle 14 is set, described left spring 9 one end are connected with follower link 8 upper ends, the other end is connected with clamping fixture seat 1, described right spring 11 one end are connected with drive connecting rod 10 lower ends, the other end is connected with clamping fixture seat 1, described handle 14 is provided with dial 21.
Described restriction locking device 15 is comprised of ratchet 16, roller 17, lever 18, spring 19, bolt 20, described ratchet 16 is assemblied on left screw rod 3 by key, the quantity of described lever 18 is 2, divide and be located at ratchet 16 both sides, and be all hinged on clamping fixture seat 1, and away from one end of clamping fixture seat 1, unthreaded hole is set at lever 18, described roller 17 is connected through the hinge on lever 18, the two ends of described spring 19 are connected on the lever 18 of ratchet 16 both sides, and described bolt 20 is through the reserved unthreaded hole of lever 18.
Described left spring 9, right spring 11, spring 19 are extension spring, and three's pitch is identical, and cross section is circle.Described follower link 8 is same with the bar appearance of drive connecting rod 10.Described dial 21 is provided with scale at its edge, and scale adopts angle system.
Claims (4)
1. a pressure controllable type restriction anti-loosing type high precision fine tuning fixture, comprise clamping fixture seat (1), left fixed block (2), left screw rod (3), left clamp (4), right clamp (5), guide rod (6), right fixed block (7), clamping fixture seat is provided with dovetail groove on (1), and at dovetail groove two ends, be provided with left fixed block (2) and right fixed block (7), left fixed block (2) is provided with screwed hole, right fixed block (7) is provided with unthreaded hole, left clamp (4) and right clamp (5) are all assemblied in the dovetail groove on clamping fixture seat (1), left screw rod (3) one end and left clamp (4) are connected, the threaded engagement of the other end and left fixed block (2), guide rod (6) one end and right clamp (5) are connected, the other end is assemblied in the unthreaded hole of right fixed block (7), it is characterized in that, also comprise follower link (8), left spring (9), drive connecting rod (10), right spring (11), transmission lever (12), right screw rod (13), handle (14), restriction locking device (15), dial (21), on described right screw rod (13) and left screw rod (3), be equipped with restriction locking device (15), one end of described follower link (8) is articulated with on clamping fixture seat (1), the other end is connected with drive connecting rod (10) by transmission lever (12), its one end near hinge is connected with guide rod (6), described drive connecting rod (10) one end is articulated with on clamping fixture seat (1), the other end is connected with right screw rod (13), described right screw rod (13) is assemblied in the screwed hole of clamping fixture seat (1), and handle (14) is set in its one end, described left spring (9) one end is connected with follower link (8) upper end, the other end is connected with clamping fixture seat (1), described right spring (11) one end is connected with drive connecting rod (10) lower end, the other end is connected with clamping fixture seat (1), described handle (14) is provided with dial (21).
2. pressure controllable type restriction anti-loosing type high precision fine tuning fixture according to claim 1, it is characterized in that, described restriction locking device (15) is by ratchet (16), roller (17), lever (18), spring (19), bolt (20) composition, described ratchet (16) is assemblied on left screw rod (3) by key, the quantity of described lever (18) is 2, divide and be located at ratchet (16) both sides, and be all hinged on clamping fixture seat (1), and away from one end of clamping fixture seat (1), unthreaded hole is set at lever (18), described roller (17) is connected through the hinge on lever (18), the two ends of described spring (19) are connected on the lever (18) of ratchet (16) both sides, described bolt (20) is through the reserved unthreaded hole of lever (18).
3. pressure controllable type restriction anti-loosing type high precision fine tuning fixture according to claim 2, is characterized in that, described spring (19) is extension spring.
4. pressure controllable type restriction anti-loosing type high precision fine tuning fixture according to claim 1, is characterized in that, described dial (21) is provided with scale at its edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685547.5A CN103737391A (en) | 2013-12-16 | 2013-12-16 | Limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685547.5A CN103737391A (en) | 2013-12-16 | 2013-12-16 | Limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure |
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| Publication Number | Publication Date |
|---|---|
| CN103737391A true CN103737391A (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685547.5A Pending CN103737391A (en) | 2013-12-16 | 2013-12-16 | Limitation looseness-preventing type high-accuracy fine-adjustment fixture with adjustable pressure |
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| Country | Link |
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| CN (1) | CN103737391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667825A (en) * | 2014-11-19 | 2016-06-15 | 中国航空工业集团公司西安飞机设计研究所 | Motion limiting device with position adjusting capacity |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105667825A (en) * | 2014-11-19 | 2016-06-15 | 中国航空工业集团公司西安飞机设计研究所 | Motion limiting device with position adjusting capacity |
| CN105667825B (en) * | 2014-11-19 | 2018-04-03 | 中国航空工业集团公司西安飞机设计研究所 | A kind of restraint device with position adjustments ability |
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Application publication date: 20140423 |