CN104493590A - Hydraulic flat tongs - Google Patents
Hydraulic flat tongs Download PDFInfo
- Publication number
- CN104493590A CN104493590A CN201410792688.1A CN201410792688A CN104493590A CN 104493590 A CN104493590 A CN 104493590A CN 201410792688 A CN201410792688 A CN 201410792688A CN 104493590 A CN104493590 A CN 104493590A
- Authority
- CN
- China
- Prior art keywords
- piston
- hydraulic
- rod
- adjusting screw
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—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
- B23Q3/066—Bench vices
-
- 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
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a hydraulic flat tongs. The hydraulic flat tongs comprise a tongs seat, a fixed jaw, a movable jaw, a hydraulic seat and an adjusting screw, wherein the fixed jaw is fixedly connected with the tongs seat; the movable jaw is slidably connected with the tongs seat; the hydraulic seat is fixedly connected with the tongs seat; the tongs seat is provided with a chute; a projection which is matched with the chute is arranged on the bottom of the movable jaw; the hydraulic seat comprises a hydraulic cylinder, a first piston, a piston rod and a second piston; the first piston, the second piston and the hydraulic cylinder form a first piston cavity; the second piston and the hydraulic cylinder form a second piston cavity; a first oil inlet hole and a second oil inlet hole are formed in the hydraulic cylinder; the first oil inlet hole is connected with the first piston cavity; the second oil inlet hole is connected with the second piston cavity; and the adjusting screw is in threaded connection with the hydraulic cylinder and is hinged to the second piston. By the hydraulic flat tongs, the shortcomings that the existing flat tongs cannot clamp workpieces firmly, and the machining precision of the workpieces is low are overcome.
Description
Technical field
The present invention relates to handware field of fixtures, be specifically related to a kind of hydraulic flat tongs.
Background technology
Flat-nose pliers has another name called machine vice, is a kind of universal fixturing, is usually used in installing miniature workpiece, and it is the random annex of milling machine, drilling machine, is fixed on platen, is used for holding workpiece to carry out machining.Flat-nose pliers structure is generally made up of clamp block, slide, regular jaw, moving jaw and adjusting screw(rod), wherein regular jaw is directly fixed in clamp block, moving jaw is then slidably connected by slide and clamp block, in use, by the parallel sliding of the relative clamp block of slide, drive the first transaction of a day's business of jaws between moving jaw and regular jaw and closed, realize workpiece unclamp blanking and clamping and positioning and machine tool accessories.At this, manually adjust adjusting screw(rod) to realize with the parallel sliding of upper saddle, and there is very large problem in this adjustment mode manually, the bad assurance of dynamics on the one hand during adjusting screw(rod) adjustment, cause the feeding of slide block very not steady, occur sometimes fast and sometimes slow phenomenon, and then make the clamping force of moving jaw and regular jaw unstable, workpiece is easy to damage because clamping is hit to produce by force unbalance; On the other hand, when after Workpiece clamping, the locking of whole flat-nose pliers realizes by the screw thread self-locking of adjusting screw(rod), locking effect compares poor, and in workpiece process, usual workpiece stressed all larger and with the vibrations of high frequency, is easy to occur that jaws is lax and workpiece is loosened, has had a strong impact on the machining accuracy of workpiece.
Summary of the invention
The technical problem to be solved in the present invention is that to there is holding workpiece for existing flat-nose pliers insecure, the defect that Workpiece Machining Accuracy is low, a kind of hydraulic flat tongs is provided, has and effectively prevent from workpiece from loosening and reduce the phenomenon crushing workpiece occurring, the machining accuracy of lifting workpieces.
In order to solve the problems of the technologies described above, the invention provides following technical scheme: hydraulic flat tongs, comprise clamp block, regular jaw, moving jaw, hydraulic seat and adjusting screw(rod), described regular jaw is fixedly connected with clamp block, moving jaw and clamp block are slidably connected, and described hydraulic seat is fixedly connected with clamp block, described clamp block is provided with chute, is provided with the projection matched with chute bottom described moving jaw, described hydraulic seat comprises hydraulic cylinder, first piston, piston rod and the second piston, one end of described piston rod is fixedly connected with moving jaw, the other end and the first piston of piston rod are solidly connected, described first piston, second piston and hydraulic cylinder form first piston chamber, described second piston and hydraulic cylinder form the second plunger shaft, and hydraulic cylinder is provided with the first fuel feed hole and the second fuel feed hole, first fuel feed hole is communicated with first piston chamber, second fuel feed hole is communicated with the second plunger shaft, described first fuel feed hole place is provided with the first inlet nozzle, described second fuel feed hole place is provided with the second inlet nozzle, described adjusting screw(rod) is threaded with hydraulic cylinder, and adjusting screw(rod) and the second piston hinge.
The hydraulic flat tongs in this programme is adopted to comprise, clamp block, regular jaw, moving jaw, hydraulic seat and adjusting screw(rod), clamp block plays fixed support, and moving jaw and regular jaw acting in conjunction are by Workpiece clamping, moving jaw slides in clamp block, can clamp the workpiece varied in size.Adjusting screw(rod) rotates promotion second piston movement, second piston movement makes the pressure in first piston chamber change thus drives first piston to move, because first piston is all fixedly connected with moving jaw with piston rod, therefore first piston motion causes moving jaw to move.First fuel feed hole is injection liquid force feed in first piston chamber.Second fuel feed hole is injection liquid force feed in the second plunger shaft.
Operation principle of the present invention and beneficial effect are: when using this hydraulic flat tongs, first rotate adjusting screw(rod), make the second piston bottom hydraulic cylinder, then the first inlet nozzle is passed through to injection liquid force feed in first piston chamber, then rotating adjusting screw(rod) makes the second piston move to the direction near regular jaw, pressure in first piston chamber increases, and first piston is moved to the direction near regular jaw.First piston moves and drives moving jaw to move to regular jaw direction, thus by Workpiece clamping under the acting in conjunction of moving jaw and regular jaw.If when producing unexpected impulse force in the process of work pieces process, the hydraulic oil in first piston chamber can play cushioning effect, avoids adjusting screw(rod) be directly hit and the silk tooth on adjusting screw(rod) is damaged.When processed workpiece can bear greater impact power in process, by the second inlet nozzle to injection liquid force feed in the second plunger shaft.In the process of work pieces process, the hydraulic oil in the second plunger shaft helps out to the second piston, and when workpiece is hit, the hydraulic oil in the second plunger shaft prevents the second piston rollback, thus more stable when making moving jaw holding workpiece.
Further, described second adjustable plate is provided with the first safety relief valve.Because workpiece causes the pressure in first piston chamber very large by moment impact in workpiece process, when the pressure increase in first piston chamber is to the setting pressure of the first safety relief valve, first safety relief valve is opened, hydraulic oil in first piston cavity flows in the second plunger shaft, with the phenomenon avoiding first piston chamber to occur detonation.
Further, described hydraulic cylinder is provided with the second safety relief valve, and the second safety relief valve is communicated with the second plunger shaft.When the pressure that the pressure increase in the second plunger shaft sets to the second safety relief valve, the second safety relief valve is opened, and carries out pressure release to the hydraulic oil in the second plunger shaft, avoids the second plunger shaft to occur the phenomenon of detonation.
Further, described second piston and adjusting screw(rod) are ball-joint.When adjusting rod rotates and advances, the second piston only does translation, does not rotate.
Further, described adjusting screw(rod) is provided with spring, and spring is positioned at the second plunger shaft.Avoid workpiece in process because the reasons such as vibrations make adjusting screw(rod) rollback, the second piston is caused also to follow adjusting screw(rod) rollback, first piston is also moved thereupon finally makes moving jaw move, and affects the clamping effect of workpiece, and then affects the processing effect of workpiece.
Further, described chute is dovetail groove, and described projection is dovetails.The guidance quality of dovetail groove is good, and can bear the impulsive force of different directions.
Further, the screw thread on described adjusting screw(rod) is double thread.For single threaded adjusting screw(rod), the distance that adjusting screw(rod) rotation one circle of double thread advances is longer.
Further, described moving jaw is provided with draw-in groove, is provided with elastomer block in described draw-in groove.At clamping special-shaped workpiece or the higher workpiece of surface smoothness, elastomer block makes workpiece stressed comparatively even, and surface of the work can not crush because of clamping.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic flat tongs embodiment of the present invention.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: clamp block 1, regular jaw 2, moving jaw 3, hydraulic seat 4, adjusting screw(rod) 5, first fuel feed hole 6, second fuel feed hole 7, first piston 8, second piston 9, piston rod 10, spring 11, elastomer block 12.
Embodiment is substantially as shown in Figure 1: hydraulic flat tongs, and comprise clamp block 1, regular jaw 2, moving jaw 3, hydraulic seat 4 and adjusting screw(rod) 5, regular jaw 2 welds with clamp block 1, and moving jaw 3 and clamp block 1 are slidably connected, and hydraulic seat 4 welds with clamp block 1, clamp block 1 is provided with dovetail groove, is provided with the dovetails matched with dovetail groove bottom moving jaw 3, hydraulic seat 4 comprises hydraulic cylinder, first piston 8, piston rod 10 and the second piston 9, one end of piston rod 10 is fixedly connected with moving jaw 3, the other end and the first piston 8 of piston rod 10 are solidly connected, first piston 8, second piston 9 and hydraulic cylinder form first piston 8 chamber, second piston 9 forms the second piston 9 chamber with hydraulic cylinder, and hydraulic cylinder is provided with the first fuel feed hole 6 and the second fuel feed hole 7, first fuel feed hole 6 is communicated with first piston 8 chamber, second fuel feed hole 7 is communicated with the second piston 9 chamber, first fuel feed hole 6 place is provided with the first inlet nozzle, second fuel feed hole 7 place is provided with the second inlet nozzle, adjusting screw(rod) 5 is threaded with hydraulic cylinder, and adjusting screw(rod) 5 and the second piston 9 ball-joint.Second piston 9 is provided with the first safety relief valve.Hydraulic cylinder is provided with the second safety relief valve, and the second safety relief valve is communicated with the second piston 9 chamber.Adjusting screw(rod) 5 is provided with spring 11, and spring 11 is positioned at the second piston 9 chamber.Screw thread on adjusting screw(rod) 5 is double thread.Moving jaw 3 is provided with draw-in groove, is embedded with elastomer block 12 in draw-in groove.
During concrete enforcement, first rotate adjusting screw(rod) 5, the second piston 9 is made to be positioned at bottom hydraulic cylinder, then the first inlet nozzle is passed through to injection liquid force feed in first piston 8 chamber, then rotating adjusting screw(rod) 5 makes the second piston 9 move to the direction near regular jaw 2, pressure in first piston 8 chamber increases, and first piston 8 is moved to the direction near regular jaw 2.First piston 8 moves and drives moving jaw 3 to move to regular jaw 2 direction, thus by Workpiece clamping under moving jaw 3 with the acting in conjunction of regular jaw 2.If when producing unexpected impulse force in the process of work pieces process, the hydraulic oil in first piston 8 chamber can play cushioning effect, avoids adjusting screw(rod) 5 be directly hit and the silk tooth on adjusting screw(rod) 5 is damaged.When processed workpiece can bear greater impact power in process, by the second inlet nozzle to injection liquid force feed in the second piston 9 chamber.In the process of work pieces process, the hydraulic oil in the second piston 9 chamber helps out to the second piston 9, and when workpiece is hit, the hydraulic oil in the second piston 9 chamber prevents the second piston 9 rollback, thus more stable when making moving jaw 3 holding workpiece.First safety relief valve and the second safety relief shield and avoid the generation of detonation phenomenon.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect the practicality of effect of the invention process and invention.
Claims (8)
1. hydraulic flat tongs, is characterized in that: comprise clamp block, regular jaw, moving jaw, hydraulic seat and adjusting screw(rod), and described regular jaw is fixedly connected with clamp block, and moving jaw and clamp block are slidably connected, and described hydraulic seat is fixedly connected with clamp block, described clamp block is provided with chute, is provided with the projection matched with chute bottom described moving jaw, described hydraulic seat comprises hydraulic cylinder, first piston, piston rod and the second piston, one end of described piston rod is fixedly connected with moving jaw, the other end and the first piston of piston rod are solidly connected, described first piston, second piston and hydraulic cylinder form first piston chamber, described second piston and hydraulic cylinder form the second plunger shaft, and hydraulic cylinder is provided with the first fuel feed hole and the second fuel feed hole, first fuel feed hole is communicated with first piston chamber, second fuel feed hole is communicated with the second plunger shaft, described first fuel feed hole place is provided with the first inlet nozzle, described second fuel feed hole place is provided with the second inlet nozzle, described adjusting screw(rod) is threaded with hydraulic cylinder, and adjusting screw(rod) and the second piston hinge.
2. hydraulic flat tongs according to claim 1, is characterized in that: described second adjustable plate is provided with the first safety relief valve.
3. hydraulic flat tongs according to claim 2, is characterized in that: described hydraulic cylinder is provided with the second safety relief valve, and the second safety relief valve is communicated with the second plunger shaft.
4. hydraulic flat tongs according to claim 3, is characterized in that: described second piston and adjusting screw(rod) are ball-joint.
5. hydraulic flat tongs according to claim 4, is characterized in that: described adjusting screw(rod) is provided with spring, and spring is positioned at the second plunger shaft.
6. hydraulic flat tongs according to claim 5, is characterized in that: described chute is dovetail groove, and described projection is dovetails.
7. hydraulic flat tongs according to claim 6, is characterized in that: the screw thread on described adjusting screw(rod) is double thread.
8. hydraulic flat tongs according to claim 7, is characterized in that: described moving jaw is provided with draw-in groove, is provided with elastomer block in described draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792688.1A CN104493590A (en) | 2014-12-20 | 2014-12-20 | Hydraulic flat tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792688.1A CN104493590A (en) | 2014-12-20 | 2014-12-20 | Hydraulic flat tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104493590A true CN104493590A (en) | 2015-04-08 |
Family
ID=52935090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792688.1A Pending CN104493590A (en) | 2014-12-20 | 2014-12-20 | Hydraulic flat tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104493590A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269373A (en) * | 2015-11-11 | 2016-01-27 | 重庆荆江汽车半轴有限公司 | Spring clamp mechanism |
| CN105458975A (en) * | 2015-12-31 | 2016-04-06 | 江苏大通汽车模具零部件有限公司 | Die clamping device |
| CN105500081A (en) * | 2016-01-29 | 2016-04-20 | 合肥压力机械有限责任公司 | Self-centering clamping device of axle tube type parts |
| CN107553791A (en) * | 2017-09-19 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of improved device for clamping mould of structure |
-
2014
- 2014-12-20 CN CN201410792688.1A patent/CN104493590A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269373A (en) * | 2015-11-11 | 2016-01-27 | 重庆荆江汽车半轴有限公司 | Spring clamp mechanism |
| CN105458975A (en) * | 2015-12-31 | 2016-04-06 | 江苏大通汽车模具零部件有限公司 | Die clamping device |
| CN105500081A (en) * | 2016-01-29 | 2016-04-20 | 合肥压力机械有限责任公司 | Self-centering clamping device of axle tube type parts |
| CN107553791A (en) * | 2017-09-19 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of improved device for clamping mould of structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103433779A (en) | Composite fixture with controllable pressure | |
| CN104493590A (en) | Hydraulic flat tongs | |
| CN104551757A (en) | Multi-station clamping device with adjustable clamping force | |
| CN108032106B (en) | Efficient numerical control turning clamp and clamping method | |
| CN204505086U (en) | Efficient auxiliary positioning clamping jig | |
| CN106584176A (en) | Special clamp for machining multiple planes and holes | |
| CN104191285A (en) | Quick-moving flat tongs | |
| CN204413675U (en) | Hydraulic flat tongs | |
| CN204171735U (en) | A kind of Quick-action bench vice | |
| CN203266457U (en) | Hydraulic flat tongs | |
| CN203316742U (en) | Pneumatic lathe tailstock | |
| CN205057531U (en) | Bolt head frock of punching | |
| CN105415018A (en) | Tool for hole drilling of lathe headstock | |
| CN103317156A (en) | Pneumatic tailstock of machine tool | |
| CN105458764A (en) | Clamp for cutting | |
| CN204366514U (en) | The multistation clamping device of adjustable gripping power | |
| CN204658034U (en) | A kind of air-actuated jaw of fast clamp crankshaft-link rod | |
| CN103659379A (en) | Bidirectional flat-nose pliers for machine | |
| CN104191286B (en) | A kind of Quick-action bench vice | |
| CN202517285U (en) | Axially adjustable type automatic centering center frame for numerically controlled lathe | |
| CN206779960U (en) | For engine body drilling, the clamp for machining of bore hole | |
| CN204053578U (en) | A kind of quick mobile flat-nose pliers | |
| CN105058080A (en) | Bolt head punching tool | |
| CN103433766A (en) | Double-fixing clamping mechanism of machine tool | |
| CN201863014U (en) | Jig of double sided milling machine processing high wearing resistant steel S pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |