CN1422725A - Follow-up precision jaw vice - Google Patents

Abstract

The present invention belongs relates to a bolt-operated precision vice for machine tool and detection. IOts movable hice jaw is equiopped with an operation tracking spring, so that it is like lead-screw hice, it can be closed with gripping operation, and can be opened with loosening operation. The interior of movable hice jaw also is equipped with an spring steel ball supporting structure, and can be retained to some defined gripping extent under the drive of composite force of its bolt, so that it can reduce slide resistance and slide wear, said drive bolt also has stroke limit, and can effectively prevent the bolt from over-feeding and over-returning, so that it has no need of secondary inspection and remodulation during its application.

Description

Follow-up precision jaw vice

This patent belongs to the machine tool field, relates to a kind of bolt operation precision vice that can be used for the processing and the detection of instrument.

By the scope of application, vice divide bench vice (being installed in the vice that uses on the vice bench), machine vice (be installed in mill, use on the platens such as plane, brill, boring in big specification vice, often be called for short vice) and precision vice (in Precision Machining such as the grinding of instrument, electric spark and the small dimension vice of use in detecting).In general, which kind of vice all can be regarded as by caliper, fixedly chela, moveable jaw and driver part four parts are formed.Fixedly chela maintains static on caliper, and moveable jaw is under the driving of driver part, along the fixedly chela that slides to or slip away of the pawl rail on the caliper, to clamp or to unclamp workpiece between two pawls.

By driving power, vice divides manually and motor-driven (comprise surge, pneumatic, electronic etc.); In manual vice, divide leading screw operated (moveable jaw is directly driven by leading screw or screw) and bolt operated (moveable jaw is driven by the fastening force between bolt and nut) again.The transmission efficiency height of leading screw operating structure and clamping force is big is the ideal operation mechanism of manual machine vice; Can provide combination flooding power simply compactly though bolt operating structure transmission efficiency is low, be the ideal operation mechanism of precision vice.The moveable jaw of the bolt operation precision vice of existing prototyping technique, though can only close with clamp operation, can not resemble and open with moving back clamp operation the leading screw operation vice, be and make things convenient for work-handling, after moving back clamp operation, " a drawing " operation of drawing back moveable jaw must be arranged, but in a large amount of circulations, the moveable jaw of the bolt operation precision vice of existing improvement technology, though can be as leading screw operation vice, close with moving back clamp operation with clamp operation and to open, but fail to be widely adopted because of the complex structure cost is high, also have suitable market deal to such an extent as to lead to all not good leading screw operation precision vice of other performance.

With regard to moveable jaw,, be exactly the focus of vice innovation for a long time to the disposal of its glade plane space always.Glade plane space is absolutely necessary to the slip of moveable jaw, but the clamping and the location of workpiece is harmful to.Desirable moveable jaw should progressively thoroughly be eliminated in the glade plane space of moveable jaw in the workpiece clamping process automatically, can also make moveable jaw that workpiece is produced a descending positioning clamping component.If the glade plane space of moveable jaw can not get progressively thoroughly eliminating automatically in the clamping process of workpiece, then the stressed crooked of moveable jaw can influence the location of workpiece and clamp rigidity and stability.If moveable jaw can produce a descending positioning clamping component, the gap, very location that then also can eliminate workpiece automatically to workpiece in clamping process.The operated precision vice of the bolt of prior art has compound driving function, can make the glade plane space of moveable jaw obtain progressively thoroughly eliminating automatically in the clamping process, but the gap, very location that can not eliminate workpiece; The operated precision vice of the leading screw of prior art can not make the glade plane space of moveable jaw obtain progressively thoroughly eliminating automatically in the clamping process, can not make moveable jaw automatically workpiece be produced a descending positioning clamping component in the clamping process.

The purpose of this patent is at first to propose the simplest a kind of moveable jaw usage track device, the moveable jaw that makes the bolt that has prototyping technique now operate precision vice can be closed with moving back clamp operation with clamp operation as leading screw operation vice and be opened, and exempts prior art open " the drawing " of not following pawl and moves; Next is that the firm ball of spring that proposes a kind of moveable jaw is propped up structure, the existing glade plane space of compound power-actuated moveable jaw that is subjected to is obtained in the clamping process in progressively thorough automatically the elimination, but also make moveable jaw can produce the descending positioning clamping component of a preset automatically to eliminate the gap, very location of workpiece.

The first term invention of this patent is that a kind of moveable jaw can be operated precision vice by moving bolt with operation, comprise one by driving moveable jaw on the pawl rail that bolt and spherical washer and the classification of hinge nut be latched in caliper (referring to Fig. 1, Fig. 2 and Fig. 3), it is characterized in that, as shown in Figure 3 and Figure 4, below driving bolt, a usage track spring is set, one end is fixed on below the adjustable clamp corpus unguis, in addition end be enclosed within drive on the bolt and support on the hinge nut, simultaneously the hinge nut is supportted into semicircle hinge seat with the moveable jaw support and draw back, make moveable jaw as leading screw operation vice, close with clamp operation, open with moving back clamp operation; Described usage track spring can be a spring, sheet spring, compression helical spring or draft helical spring, the most reliable the simplest usage track spring is a spring, be by a spring steel wire bending form by steel wire hoop and together diplonema spring, its free state as shown in Figure 5, its work energy storage state is as shown in Figure 6; No matter which kind of spring and which kind of the way of restraint, the key structure of spring all is the restraining structure angle at two ends, and the restraining structure angle of each end should guarantee that this end is tied and when end is free in addition, and the free spring body and the pawl base of the rail are parallel.For mounting structure spring so, well imagine, suppose only to remove the constraint of a certain end of the spring of duty, constraint relief and whereabouts that this end of affranchising will recover is exactly the support force direction of working spring to its attaching means then, that is to say, the hinge nut has by the trend of support to top far away, and moveable jaw has by the trend of support to below far away; When both ends of the spring all suffers restraints and hinge nut when being retrained by hinge seat, spring just can only support moveable jaw and draw back, till being activated the bolt restriction; Self-evident, this is the successful key point of invention, also is the key point of understanding and carrying out an invention.If the rigidity appropriateness of spring is then pressed shown in Figure 8ly with simple power F _fJust can there be level to promote " noise made in coughing or vomiting clatter " engagement sound of adjusting hinge nut and moveable jaw and can hearing hinge nut and hinge seat simultaneously forward fast, die nut be inserted to drive in the bolt headstock make handle, apply even power f and tensile force f simultaneously _bJust can there be level to pull back fast and adjusts hinge nut and moveable jaw.The terminal that control drives the bolt effective thread just can prevent effectively that bolt is tight and excessively cause that driving the angle exceeds optimum range, goes into to hold and sets up an elastic spring and just can prevent effectively that the excessive hinge nut that causes of Bolt-withdrawing device from falling down from bolt driving bolt.Below the moveable jaw of the bolt operation precision vice of existing prototyping technique a cantilever spring sheet is arranged also, the driving bolt with the cantilever holder and can correctly repeat engagement automatically with hinge seat to guarantee the hinge nut on it, but no matter whether cantilever works, moving back and twisting bolt all is that the hinge nut withdraws from hinge seat, be to guarantee the convenience that repeat meshing property and work-handling of hinge nut, move back that operating always is critical behind the bolt moves back " drawing " operation of drawing moveable jaw with one with hinge seat; One because the bolt of prior art does not have the tight limit restriction of twisting, bolt is often tight twists excessive and causes the spring excessive deformation to lose efficacy and can not guarantee correctly to repeat engagement, two bolts owing to prior art do not have to move back twists limit restriction, bolt often moves back twists excessive and causes the hinge nut to fall down from bolt, even the accident potential that might cause screw-threaded engagement number of turns deficiency, three because prior art constructions does not have the engagement sensory features, easily suspect and correctly do not repeat engagement, therefore, often need turn procuratorial work, adjustment, repairing to vice in the use.This shows, the simple shirtsleeve operation tracking spring device again that gets that this patent proposes, not only solved the problem that the pawl of the bolt operation precision vice of existing prototyping technique is not followed, but also together together with the driving travel limits scheme of the driving bolt that proposes in passing, engagement reliability and engagement safety issue that prior art exists have been solved, not with having put forward complicated existing improving technology scheme again.

Another invention of this patent is the vice that a kind of moveable jaw has compound clamping structure, it is characterized in that, the moveable jaw of vice have one as shown in Figure 7 by the compression spring, packing ring, the adjustable spring steel ball in screw is packed the adjustable clamp corpus unguis into that steel ball and Adjusting bolt Adjusting screw are formed is propped up structure, twist degree that described Adjusting bolt Adjusting screw goes into screw and just can promptly adjust the descending clamping stroke that the descending clamping initiating dynamics of moveable jaw and degree that described steel ball is given prominence to the moveable jaw slidingsurface are promptly adjusted moveable jaw, change the descending clamping dynamics approaching one's end that described compression spring just can be adjusted moveable jaw by the compression degree that described steel ball and described packing ring are adjusted described compression spring simultaneously.The downward storke of turning moveable jaw down can be protected soft precision workpiece surface to exempt from clamping claw and scratch simultaneously also in the descending initiating dynamics of transferring big moveable jaw, can be adjusted to zero stroke in case of necessity to close descending clamping component fully.Prop up the moveable jaw of structure being provided with spring steel ball, under the driving of composite force, moveable jaw will be always supportted to slide on the pawl rail of caliper by spring steel ball is obstructed until touching caught workpiece, the resistance to sliding of this chela that not only can take in sail but also can alleviate the skimming wear of contact; After this, the horizontal drive component of the moveable jaw of being obstructed and vertical drive component will be simultaneously cumulative with the continuation of the process of clamping, when the vertical of moveable jaw drives component and increases to greater than spring steel ball the preset support power of moveable jaw, moveable jaw will clip workpiece together the descending slidingsurface locating surface that touches the pawl supporting surface of caliper and workpiece until moveable jaw touch the workpiece locating surface of vice, reach final automatically simultaneously thoroughly the eliminate glade plane space of moveable jaw and the gap, very location of workpiece.If moveable jaw does not have compound driving function, then moveable jaw does not have downlink drive component source, can not overcome the support power of spring steel ball and be with workpiece descending together, therefore, can not have the spring steel ball of the moveable jaw of compound drives structure certainly and prop up gap, the very location effect that structure does not play the elimination workpiece, the only skimming wear effect that works the resistance to sliding of the chela that takes in sail and alleviate contact; Otherwise if moveable jaw has only compound drives structure and do not have spring steel ball and prop up structure, then moveable jaw has only automatic elimination moveable jaw glade plane space function and does not have automatic elimination workpiece and locate very much gap function.Which kind of vice no matter every moveable jaw that compound driving function is arranged be, the condition that does not change original structure and directly set up this compound clamping structure is all arranged, and improves serviceability.The moveable jaw of the operated precision vice of bolt of prior art be subjected to compound power-actuated, therefore, in its moveable jaw, set up two groups of firm balls of spring and prop up structure, the glade plane space of its moveable jaw is obtained in the clamping process in progressively thorough automatically the elimination, but also make descending positioning clamping component that its moveable jaw can produce a preset automatically eliminating the gap, very location of workpiece, and obtain and reduce resistance to sliding and reduction and contact the skimming wear effect that increases the service life.

Fig. 1 is the operated precision vice of bolt, and the operated precision vice of the bolt of a kind of outward appearance and existing prototyping technique does not have the vice of a bit difference, but usage track device and compound clamping generator are housed in its adjustable clamp corpus unguis; Fig. 2 is the bolt operation precision vice that moveable jaw has usage track function and compound clamping function, is it is removed and will drive bolt, spherical washer, hinge nut, usage track spring and hold-down screw thereof and two groups of spring steel balls are propped up the view that structure stays put along the pawl rail by the adjustable clamp corpus unguis of Fig. 1 assembling; Fig. 3 is the bolt operation precision vice that moveable jaw has usage track function and compound clamping function, is the view that it is cut open seen driving bolt, spherical washer, hinge nut and usage track spring and hold-down screw thereof by the caliper and the adjustable clamp corpus unguis of Fig. 1 assembling; Fig. 4 is the partial enlarged drawing of Fig. 3, further the view of the usage track spring in the displaying work; Fig. 5 is the usage track spring structure of free state, and Fig. 6 is the usage track spring that is in work energy storage state, and Fig. 7 props up structure for moveable jaw provides the spring steel ball of compound clamping function, and Fig. 8 is the key diagram of manipulating of follow-up precision jaw vice.

Claims (4)

1 one kinds of moveable jaw can be operated precision vice by moving bolt with operation, comprise one by driving the moveable jaw on the pawl rail that bolt and spherical washer and the classification of hinge nut be latched in caliper, it is characterized in that, below driving bolt, a usage track spring is set, one end constrains in below the adjustable clamp corpus unguis, in addition end constrain on the hinge nut or the driving bolt of adjacent hinge nut on, simultaneously the hinge nut is supportted into semicircle hinge seat with the moveable jaw support and draw back, make moveable jaw as leading screw operation vice, close with clamp operation, open with moving back clamp operation.

2 one kinds of moveable jaw by claim 1 can be operated precision vice by moving bolt with operation, it is characterized in that described usage track spring can be a spring, sheet spring, compression helical spring or draft helical spring, the most reliable the simplest usage track spring is a spring, be by a spring steel wire bending form by steel wire hoop and together diplonema spring, the restraining structure angle at its two ends should structure must guarantee that arbitrary end is tied and when end is free in addition, and free spring body is all parallel with the pawl base of the rail.

3 one kinds of bolts operation precision vices, the end of going into that it is characterized in that driving bolt is provided with elastic spring and moves back excessively with the operation of restriction bolt, and the terminal of control effective thread is operated into excessive with the restriction bolt.

4 one kinds of moveable jaw have the vice of compound clamping structure, it is characterized in that, the moveable jaw of vice is propped up structure by an adjustable spring steel ball of being made up of compression spring, packing ring, steel ball and Adjusting bolt Adjusting screw in screw is packed the adjustable clamp corpus unguis into.