CN204430888U

CN204430888U - Indexing fixture

Info

Publication number: CN204430888U
Application number: CN201520058172.4U
Authority: CN
Inventors: 滕天阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-28
Filing date: 2015-01-28
Publication date: 2015-07-01
Anticipated expiration: 2025-01-28

Abstract

The indexing fixture that the utility model provides, the basis of thick pressuring action is set up smart pressuring action, reduces the inessential gap behind location, improves setting accuracy.The indexing fixture that the utility model provides, comprise clamp body, clamp body has spatial accommodation, clamp body is provided with supporting arrangement and hold down gag, hold down gag comprises pressing plate, compresses hydraulic cylinder, piston rod, link rod, compress hydraulic cylinder and the fixing assembling of clamp body, piston rod compresses hydraulic cylinder axially movable assembling relatively, piston rod orders about axial activity by compressing hydraulic cylinder, link rod and the assembling of piston rod axial restraint, link rod and piston rod are to relative roll adjustment, and link rod and the assembling of pressing plate axial restraint, the relative link rod revolution of pressing plate is assembled.

Description

Indexing fixture

Technical field

The utility model relates to fixture, especially relates to the supporting fixture be used for the processing of workpiece calibration of lathe.

Background technology

The patent No. is the Chinese patent of 201420111322.9, the indexing fixture recorded, comprise clamp body, clamp body has spatial accommodation, workpiece is loaded among spatial accommodation, and clamp body is provided with supporting arrangement and hold down gag, and supporting arrangement is used for holding workpieces, hold down gag, after supporting arrangement holding workpieces, applies to complete location after pressure makes Work-sheet pressing to it.The defect that this technical scheme exists at present is different because of workpiece, and surface irregularity, and hold down gag is because only there is the thick pressuring action compressing hydraulic cylinder, causes existing between its pressing plate and workpiece inessential gap error, affect machining accuracy, setting accuracy is not enough.

Summary of the invention

For overcoming above-mentioned defect, the indexing fixture that the utility model provides, the basis of thick pressuring action is set up smart pressuring action, reduces the inessential gap behind location, improves setting accuracy.

The indexing fixture that the utility model provides, comprise clamp body, clamp body has spatial accommodation, clamp body is provided with supporting arrangement and hold down gag, hold down gag comprises pressing plate, compresses hydraulic cylinder, piston rod, link rod, compress hydraulic cylinder and the fixing assembling of clamp body, piston rod compresses hydraulic cylinder axially movable assembling relatively, piston rod orders about axial activity by compressing hydraulic cylinder, link rod and the assembling of piston rod axial restraint, link rod and piston rod are to relative roll adjustment, and link rod and the assembling of pressing plate axial restraint, the relative link rod revolution of pressing plate is assembled.

According to the indexing fixture that the utility model provides, after workpiece is loaded into supporting arrangement, compressed hydraulic cylinder action before this, thick pressuring action is carried out to workpiece, and then by handling link rod feeding, further workpiece is closely compressed, essence pressuring action fills up the gap compressing hydraulic cylinder operating position fixing, improve setting accuracy, and then play reduction vibrations when work pieces process, improve the effect of machining accuracy.

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.

Accompanying drawing explanation

Fig. 1 is the stereogram that indexing fixture embodiment loads workpiece.

Fig. 2 is one of stereogram of indexing fixture embodiment.

Fig. 3 is the stereogram two of indexing fixture embodiment.

Fig. 4 is the structure chart of indexing fixture embodiment.

Fig. 5 is that the A-A of Fig. 4 is to sectional view.

Fig. 6 is indexing fixture embodiment A place schematic enlarged-scale view.

Fig. 7 is indexing fixture embodiment link rod 340 and rolling ball body 350 the second assembly structure.

Detailed description of the invention

According to shown in Fig. 1 to Fig. 4, indexing fixture embodiment of the present utility model, comprise clamp body 100, clamp body 100 has spatial accommodation 900, clamp body 100 is provided with supporting arrangement 200 and hold down gag 300, hold down gag 300 comprises pressing plate 310, compress hydraulic cylinder 320, piston rod 330, link rod 340, compress hydraulic cylinder 320 and the fixing assembling of clamp body 100, piston rod 330 compresses hydraulic cylinder 320 axially movable assembling relatively, piston rod 330 orders about axial activity by compressing hydraulic cylinder 320, link rod 340 and the assembling of piston rod 330 axial restraint, link rod 340 and piston rod 330 axially relative roll adjustment, link rod 340 and the assembling of pressing plate 310 axial restraint, pressing plate 310 relatively link rod 340 turns round assembling.

Spatial accommodation 900 is the spaces for loading workpiece 800, and workpiece 800 is loaded into spatial accommodation 900 from the top of clamp body 100.

Piston rod 330 compresses hydraulic cylinder 320 axially movable assembling relatively, piston rod 330 is the piston rods compressing hydraulic cylinder 320, clamp body 100 is fixedly mounted on owing to compressing hydraulic cylinder 320, piston rod 330 is axially movable with regard to the compression hydraulic cylinder 320 of geo-stationary, therefore the axial movable assembling of piston rod 330 relative compression hydraulic cylinder 320 is construed as piston rod 330 and relatively can compresses the axial activity of hydraulic cylinder 320, and it orders about by compressing hydraulic cylinder 320.

Link rod 340 and the assembling of piston rod 330 axial restraint, link rod 340 and piston rod 330 axially relative roll adjustment, refer to that both link rod 340 and piston rod 330 have axial interaction relation to have again axial relative shift relation, link rod 340 and piston rod 330 can order about axially common interaction relation of retreating by compressing hydraulic cylinder 320, link rod 340 can axially be retreated by opposing pistons bar 330 separately again simultaneously, axially relative roll adjustment both being formed thus, namely the interlock of link rod 340 and piston rod 330 is so-calledly slightly compress action to workpiece, and namely the independent roll adjustment of link rod 340 opposing pistons bar 330 is so-called to workpiece essence pressuring action.

Link rod 340 and the assembling of pressing plate 310 axial restraint, pressing plate 310 relatively link rod 340 turns round assembling, refer to that link rod 340 and both pressing plates 310 have interaction relation to have again relative revolution relation, link rod 340 and pressing plate 310 also can order about axially common interaction relation of retreating by compression hydraulic cylinder 320, and pressing plate 310 can turn round by relative link rod 340 separately again simultaneously.

As shown in Figure 4, supporting arrangement 200 also can with reference to the appropriate section mechanism in the Chinese patent of existing 201420111322.9, it comprises hydraulic motor 210, connecting plate 220, location-plate 230, locked hydraulic cylinder 240, dynamic gear ring 250 and quiet gear ring 260, hydraulic motor 210 and the fixing assembling of clamp body 100, locked hydraulic cylinder 240 and the fixing assembling of clamp body 100, connecting plate 220 opposing hydraulic motor 210 revolution assembling, connecting plate 220 orders about revolution by hydraulic motor 210, connecting plate 220 and the fixing assembling of location-plate 230, connecting plate 220 and the fixing assembling of dynamic gear ring 250, locked hydraulic cylinder 240 and the fixing assembling of clamp body 100, the locked hydraulic cylinder 240 axially movable assembling relatively of quiet gear ring 260, quiet gear ring 260 orders about axial activity by locked hydraulic cylinder 240, quiet gear ring 260 and dynamic gear ring 250 comprise abutting lockup state and depart from released state.

Connecting plate 220 opposing hydraulic motor 210 revolution assembling, refer to that connecting plate 220 is arranged on the piston rod of hydraulic motor 210, and then turn round by its hydraulic motor 210 ordering about geo-stationary, as long as mean that hydraulic motor 210 drives connecting plate 220 to turn round, the location-plate 230 together with fixing with connecting plate 220 and dynamic gear ring 250 can be driven to turn round, and even location-plate 230 and workpiece 800 also together turn round simultaneously.Compress the piston rod of hydraulic cylinder 320 and the piston rod center alignment of hydraulic motor 210, in the concentric installation of a horizontal straight line.It should be noted that, the angle that hydraulic motor 210 can drive connecting plate 220 to rotate, more than 360 degree, is namely greater than the not limited revolution of 1 circle.

The locked hydraulic cylinder 240 axially movable assembling relatively of quiet gear ring 260, locked hydraulic cylinder 240 can be axially movable relatively to refer to quiet gear ring 260, because quiet gear ring 260 is arranged on the piston rod of locked hydraulic cylinder 240, therefore quiet gear ring 260 orders about axial activity by locked hydraulic cylinder 240.Abutting lockup state between quiet gear ring 260 and dynamic gear ring 250 and depart from released state is that it is realized by following principle: when quiet gear ring 260 is in the released state departing from dynamic gear ring 250, and that is dynamic gear ring 250 is now rotatable; When the piston rod of locked hydraulic cylinder 240 promotes the feeding of quiet gear ring 260 until when it is connected to dynamic gear ring 250, the revolution trend of dynamic gear ring 250 is just stoped by quiet gear ring 260, defines the latch functions of quiet gear ring 260 to dynamic gear ring 250.

For improving operation stability and reducing the consideration of processing vibration equally, dynamic gear ring 250 and the quiet gear ring 260 of the present embodiment are all installed with one heart centered by hydraulic motor 210, and it is the same with the Chinese patent of existing 201420111322.9, clamp body 100 be provided be evenly distributed on quiet gear ring 260 circumferentially three locked hydraulic cylinders 240, quiet gear ring 260 is axial feed under three locked hydraulic cylinders 240 order about effect simultaneously.

Specially remark additionally: hydraulic motor 210, locked hydraulic cylinder 240, compress the fixing assembling of this three of hydraulic cylinder 320 and clamp body 100, all refer to that the cylinder body of three is static and be fixed on clamp body 100, and the piston rod of three is its cylinder body activity relative.Locked hydraulic cylinder 240, compression hydraulic cylinder 320 belong to straight reciprocating motion formula hydraulic cylinder, and hydraulic motor 210 belongs to gyroscopic pendulum dynamic formula hydraulic cylinder, is all hydraulic cylinder common on market.

As shown in Figure 4 and Figure 6, pressing plate 310 link rod 340 rolling friction assembling relatively.Refer to that the relative displacement contact between both is all converted into rolling friction, specifically, when pressing plate 310 turns round together with workpiece 800, a little radial displacement of the relative link rod 340 of pressing plate 310, the radial load negative effect that pressing plate 310 puts on link rod 340 is reduced by rolling friction each other, keep the axial concentricity of link rod 340, and then improve machining accuracy.Especially, it should be noted that to only have rolling friction to contact between link rod 340 with pressing plate 310, in addition there is no other contact site between the two.

Have rolling ball body 350 between the link rod 340 of the present embodiment and pressing plate 310, rolling ball body 350 and link rod 340 abut assembling, and rolling ball body 350 and pressing plate 310 abut assembling.

Can say that rolling ball body 350 is exactly a ball ball, preferred rolling ball body 350 is easy to dismounting and maintenance, is conducive to reducing costs.But the abutting relation between link rod 340 and pressing plate 310 should be defined as rolling ball body 350, as long as because both rolling friction can be realized.

Link rod 340 is provided with yoke plate groove 341, and rolling ball body 350 and yoke plate groove 341 matched in clearance are assembled.Yoke plate groove 341 is a kind of structures being conducive to dismounting maintenance, and other mechanism certainly also can be used to be replaced.Such as, as shown in Figure 7, a lateral pin 349 can be set up at link rod 340, lateral pin 349 two ends and link rod 340 fix assembling, and rolling ball body 350 are provided with a through hole 355, by the through hole 355 of lateral pin 349 through this rolling ball body 350, rolling ball body 350 can rotate relative to lateral pin 349, complete the assembling of rolling ball body 350 and link rod 340, just comparing yoke plate groove 341 like that can significantly raise the cost, and dismounting maintenance cost is high.

As shown in Figure 4 and Figure 5, supporting arrangement 200 comprises base 270, and base 270 comprises rest pad 272 and stopper slot 271, and rest pad 272 and workpiece abut assembling, and pressing plate 310 relative limit groove 271 is movable assembling axially.Can find out, workpiece 800 is the supporting-point with three directions in an embodiment, the location-plate 230 in left side respectively, the pressing plate 310 on right side, and the rest pad 272 of downside, rest pad 272 is interpreted as the super positioner set up for locating the heavy weight workpiece of some large volume, strengthens the accuracy of location.Stopper slot 271 is opened in base 270 surface, the present embodiment is that the lower end of pressing plate 310 is assemblied in stopper slot 271, pressing plate 310 and stopper slot 271 matched in clearance, by stopper slot 271 both sides position-limiting action, pressing plate 310 axially can only be retreated in stopper slot 271, and therefore this is the axially movable lexical or textual analysis of assembling of pressing plate 310 relative limit groove 271.

As shown in Figure 4 and Figure 5, base 270 comprises axial slope 273, and axial slope 273 refers to the face that the axis along piston rod 330 tilts.Axial slope 273 and the fixing assembling of base 270, axial slope 273 respect thereto 270 is movable assembling axially, also be direction same as the axis of piston rod 330, refer to the existing locking state be fixed together of both axial slope 273 and base 270, have again between the two can be mutually axially displaced released state.Rest pad 272 and axial slope 273 abut assembling, refer to that both are in abutting contact after mounting.The base 270 of axial slope 273 geo-stationary during such released state is axially movable, and then promotion rest pad 272 is axially elevated on inclined-plane 273, and then change the height of rest pad 272 relative to base 270, again by axial slope 273 and base 270 locking fixed with each other after adjustment, to adjust workpiece 800 height, and to adapt to the demand of different workpieces.

Base 270 comprises slide block 276, slide block 276 respect thereto 270 activity assembling, and axial slope 273 is positioned at slide block 276, adjusts the height and position of rest pad 272 relative to base 270 by promoting slide block 276 and making it subsequently to fix with base 270 to install to complete.

It is emphasized that the present embodiment adopts base 270 to fix, and the structure that axial slope 273 is movable in base 270.Also axial slope 273 can be adopted static, and make base 270 axially movable, and then promote the structure of rest pad 272, but must solve like that be rest pad 272 move axially error, therefore on base 270, the axial displacement compensation arrangement for rest pad 272 must be set up again, error is moved axially with what compensate rest pad 272, though be feasible scheme, but cost height enterprise.

Claims

1. indexing fixture, comprise clamp body (100), clamp body (100) has spatial accommodation (900), and clamp body (100) is provided with supporting arrangement (200) and hold down gag (300), it is characterized in that:

Hold down gag (300) comprises pressing plate (310), compress hydraulic cylinder (320), piston rod (330), link rod (340), compress hydraulic cylinder (320) and the fixing assembling of clamp body (100), piston rod (330) compresses hydraulic cylinder (320) axially movable assembling relatively, piston rod (330) orders about axial activity by compressing hydraulic cylinder (320), link rod (340) and the assembling of piston rod (330) axial restraint, link rod (340) and piston rod (330) axially relative roll adjustment, link rod (340) and the assembling of pressing plate (310) axial restraint, pressing plate (310) is link rod (340) revolution assembling relatively.

2. indexing fixture according to claim 1, is characterized in that: pressing plate (310) link rod (340) rolling friction assembling relatively.

3. indexing fixture according to claim 2, it is characterized in that: there is between link rod (340) and pressing plate (310) rolling ball body (350), rolling ball body (350) and link rod (340) abut assembling, and rolling ball body (350) and pressing plate (310) abut assembling.

4. indexing fixture according to claim 3, is characterized in that: link rod (340) is provided with yoke plate groove (341), and rolling ball body (350) and yoke plate groove (341) matched in clearance are assembled.

5. the indexing fixture according to claim 1 or 2 or 3 or 4, it is characterized in that: supporting arrangement (200) comprises base (270), base (270) comprises rest pad (272) and stopper slot (271), rest pad (272) and workpiece abut assembling, and pressing plate (310) relative limit groove (271) is movable assembling axially.

6. indexing fixture according to claim 5, it is characterized in that: base (270) comprises axial slope (273), axial slope (273) and the fixing assembling of base (270), axial slope (273) respect thereto (270) is movable assembling axially, and rest pad (272) and axial slope (273) abut assembling.

7. the indexing fixture according to claim 1 or 2 or 3 or 4, it is characterized in that: supporting arrangement (200) comprises hydraulic motor (210), connecting plate (220), location-plate (230), locked hydraulic cylinder (240), dynamic gear ring (250) and quiet gear ring (260), hydraulic motor (210) and the fixing assembling of clamp body (100), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), connecting plate (220) opposing hydraulic motor (210) revolution assembling, connecting plate (220) orders about revolution by hydraulic motor (210), connecting plate (220) and the fixing assembling of location-plate (230), connecting plate (220) and the fixing assembling of dynamic gear ring (250), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), quiet gear ring (260) locked hydraulic cylinder (240) axially movable assembling relatively, quiet gear ring (260) orders about axial activity by locked hydraulic cylinder (240), quiet gear ring (260) and dynamic gear ring (250) comprise abutting lockup state and depart from released state.

8. indexing fixture according to claim 5, it is characterized in that: supporting arrangement (200) comprises hydraulic motor (210), connecting plate (220), location-plate (230), locked hydraulic cylinder (240), dynamic gear ring (250) and quiet gear ring (260), hydraulic motor (210) and the fixing assembling of clamp body (100), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), connecting plate (220) opposing hydraulic motor (210) revolution assembling, connecting plate (220) orders about revolution by hydraulic motor (210), connecting plate (220) and the fixing assembling of location-plate (230), connecting plate (220) and the fixing assembling of dynamic gear ring (250), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), quiet gear ring (260) locked hydraulic cylinder (240) axially movable assembling relatively, quiet gear ring (260) orders about axial activity by locked hydraulic cylinder (240), quiet gear ring (260) and dynamic gear ring (250) comprise abutting lockup state and depart from released state.

9. indexing fixture according to claim 6, it is characterized in that: supporting arrangement (200) comprises hydraulic motor (210), connecting plate (220), location-plate (230), locked hydraulic cylinder (240), dynamic gear ring (250) and quiet gear ring (260), hydraulic motor (210) and the fixing assembling of clamp body (100), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), connecting plate (220) opposing hydraulic motor (210) revolution assembling, connecting plate (220) orders about revolution by hydraulic motor (210), connecting plate (220) and the fixing assembling of location-plate (230), connecting plate (220) and the fixing assembling of dynamic gear ring (250), locked hydraulic cylinder (240) and the fixing assembling of clamp body (100), quiet gear ring (260) locked hydraulic cylinder (240) axially movable assembling relatively, quiet gear ring (260) orders about axial activity by locked hydraulic cylinder (240), quiet gear ring (260) and dynamic gear ring (250) comprise abutting lockup state and depart from released state.