CN206286844U - Auto parts machine fastening clips - Google Patents

Abstract

The utility model discloses auto parts machining fastening clips, including base, guide pad and projection, the support base of tubulose is installed in the middle part of projection, projection one end is fixed with support bar, the projection other end is provided with blind hole, one end of connecting rod is placed in blind hole, the first nut that screw thread coordinates therewith is provided with connecting rod, the activity of adjusting rod one end is connected through described guide pad one end end and extending to support bar, the other end of guide pad is hinged with the other end of connecting rod, the second nut that screw thread coordinates therewith is installed on the adjusting rod other end, drive rod activity is through the middle part of guide pad, the grip block just to support base is installed in the end of drive rod.When workpiece base produces larger vibration because of drilling, the one-level of workpiece is fastened by grip block, two grades that guide pad and connecting rod, coupling assembly and base are formed are fastened, ensure the stability of workpiece, improve the machining accuracy of workpiece, while reducing the scrappage of workpiece base.

Description

Auto parts machine fastening clips

Technical field

The utility model is related to machining field, specifically refers to auto parts machining fastening clips.

Background technology

When processing workpiece on lathe, for the surface for enabling workpiece reach the dimensions that drawing specifies, geometry and with The technical requirements such as the relative-position error of other surfaces, workpiece must be positioned, clip before processing.Fixture is generally by positioning unit Part, clamping device, to knife induction element, indexing means, connecting element and clamp body etc. constitute.But it is of the prior art Fixture adjusts complexity when in use, particularly in the Workpiece boring for different model, the particularly abnormity with periphery Workpiece, common fixture cannot meet corresponding clamping dynamics, easily occur loosening and then causing Workpiece boring in process There is deviation in precision, causes the scrappage of workpiece base to increase.

Utility model content

The purpose of this utility model is the machining fastening clips that supply automobile parts, and is ensureing the same of piece-holder dynamics When, the stability of workpiece is improved to reduce the scrappage of workpiece base.

The purpose of this utility model is achieved through the following technical solutions：

Auto parts machine fastening clips, including base, guide pad and are arranged on the projection of base one end, described The support base of tubulose is installed, projection one end is fixed with support bar, and the projection other end is provided with blind hole, connecting rod in the middle part of projection One end is placed in blind hole, and the first nut that screw thread coordinates therewith is provided with connecting rod, and the activity of adjusting rod one end runs through institute State guide pad one end end and extend to and be connected with support bar, the other end of the guide pad is hinged with the other end of connecting rod, The second nut that screw thread coordinates therewith is installed on the adjusting rod other end；Also include drive rod, the drive rod activity runs through The middle part of guide pad, and the grip block just to support base is installed in the end of drive rod, it is provided with the middle part of the guide pad Annular groove, two rubber ring sleeves are located on the drive rod, and the outer circle wall of the rubber ring is contacted with the bottom land of annular groove.

For in the prior art, loosening and causing the scrappage of workpiece base easily occur when workpiece is fastened in fixture The present situation for increasing, two grade fastenings of the utility model by grip block and guide pad to workpiece so that workpiece quilt on base Stabilization is fixed, and causes that loosening occurs in the contact between grip block and workpiece, and enters to avoid the vibration that is produced when being drilled And improve the machining accuracy of workpiece.Specific fastening flow is as follows：First the ledge of workpiece is placed in the support base of tubulose, is driven Lever forces grip block to be in close contact with the outer wall of workpiece, while adjusting the first nut and second under outside powered Nut so that coupling assembly that adjusting rod and support bar are formed and connecting rod are respectively to the two ends of guide pad along where workpiece Locality is promoted, until guide pad madial wall is mutually adjacent to the end face of grip block；Wherein, the second nut is rotated so that even The end of extension bar is moved in blind hole, while ensure that connecting rod has enough pulling force to one end end of guide pad, rotation the One nut so that the other end end of guide pad relative to adjusting rod realize relatively move, workpiece base produced because of drilling compared with During big vibration, the one-level of workpiece is fastened by grip block, two that guide pad and connecting rod, coupling assembly and base are formed Level fastening, it is ensured that the stability of workpiece, improves the machining accuracy of workpiece, while reducing the scrappage of workpiece base.

Wherein, when the applied stress produced after drilling tool and workpiece interact is transferred to drive rod by grip block, drive Lever can produce nondirectional swing, and the connection being easily caused between drive rod and the driving equipment of outside sustains damage, and this Utility model opens up annular groove in the guide pad part that the middle part of guide pad, i.e. drive rod are run through, and is arranged on drive rod Two rubber rings, the outer circle wall of rubber ring is contacted with the bottom land of annular groove so that when applied stress is transferred to drive rod, is led to Deformation and elastic recovery that rubber ring occurs in annular groove are crossed, the effect that drive rod is subject to is exerted oneself to buffer elimination, realize driving The stable conditions of lever, ensure the stabilization scaling of the grip block in long-term process, and then improve the processing efficiency of workpiece.

V-shaped groove is provided with side of the grip block just to support base, is provided with the V-shaped groove cell wall multiple mutual Independently and in the holding shim of circular arc, the axis of multiple holding shims is parallel to each other.For the outer circumferential walls of workpiece itself, this The circular arc clamping face of utility model abandoning tradition, to reduce stress surface excessive in workpiece outer wall, and then reduces workpiece outer wall The damage formed by clamping, is contacted by V-shaped groove with workpiece outer wall so that no matter the size variation of workpiece itself model, Can realize that the point between grip block and break is contacted, to realize that the one-level to workpiece is fastened, and be installed on the side wall of V-shaped groove There is the holding shim of multiple circular arcs, multiple holding shims are separate and axis is parallel to each other, when V-shaped groove connects with workpiece outer wall When touching, two crooked ends of holding shim are directly contacted after stress is deformed upon respectively with the cell wall of V-shaped groove so that grip block Hard contact between workpiece is changed into flexible contact, i.e., can mitigate in workpiece outer wall when workpiece produces vibration because of drilling Wear extent, and then improve workpiece processing quality.

The material of the holding shim is elastic caoutchouc.Preferably, the holding shim of elastomeric material has well Elastic resilience, when workpiece and grip block are disengaged, holding shim can Quick-return deformation, to facilitate next work Part carries out Drilling operation.

It is more than the thickness in the middle part of it in two thickness of end of the holding shim.Preferably, the two of holding shim End will be contacted prior to its middle part with workpiece outer wall, and the pressure that the two ends of holding shim are born in stress is greater than in the middle part of it The pressure for being born, therefore the thickness at holding shim two ends can extend the service life of holding shim more than the thickness in the middle part of it.

The utility model compared with prior art, has the following advantages and advantages：

1st, the utility model is by rotating the second nut so that the end of connecting rod is moved in blind hole, while ensureing to connect Extension bar has enough pulling force to one end end of guide pad, rotates the first nut so that the other end end of guide pad is relative Realize relatively moving in adjusting rod, when workpiece base produces larger vibration because of drilling, by grip block to the one-level of workpiece Two grades of fastenings that fastening, guide pad and connecting rod, coupling assembly and base are formed, it is ensured that the stability of workpiece, improve workpiece Machining accuracy, while reduce workpiece base scrappage；

2nd, the utility model when V-shaped groove is contacted with workpiece outer wall, send out by two crooked ends difference stress of holding shim Directly contacted with the cell wall of V-shaped groove after raw deformation so that the hard contact between grip block and workpiece is changed into flexible contact, that is, exist Workpiece can mitigate the wear extent in workpiece outer wall when producing vibration because of drilling, and then improve the processing quality of workpiece；

3rd, the holding shim of elastomeric material has good elastic resilience in the utility model, in workpiece and folder When holding block and disengaging, holding shim can Quick-return deformation, to facilitate next workpiece to carry out Drilling operation.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：

Fig. 1 is the utility model structural representation；

Fig. 2 is the enlarged drawing at A in Fig. 1；

Mark and corresponding parts title in accompanying drawing：

1- drive rods, 2- guide pads, 3- grip blocks, 31- holding shims, 4- adjusting rods, 5- support bars, 6- bases, 7- connect Extension bar, 8- workpiece, 9- support bases, 10- annular grooves, 11- rubber rings.

Specific embodiment

To make the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this Utility model, is not intended as to restriction of the present utility model.

Embodiment 1

As depicted in figs. 1 and 2, the present embodiment includes base 6, guide pad 2 and is arranged on the projection of the one end of base 6, The support base 9 of tubulose is installed, projection one end is fixed with support bar 5, and the projection other end is provided with blind hole in the middle part of the projection, even One end of extension bar 7 is placed in blind hole, and the first nut that screw thread coordinates therewith is provided with connecting rod 7, and the one end of adjusting rod 4 is lived Move to run through one end end of the guide pad 2 and extend to and be connected with support bar 5, the other end and the connecting rod 7 of the guide pad 2 The other end is hinged, and the second nut that screw thread coordinates therewith is provided with the other end of adjusting rod 4；Also include drive rod 1, the drive The activity of lever 1 is provided with the grip block 3 just to support base 9 through the middle part of guide pad 2 in the end of drive rod 1, described The middle part of guide pad 2 is provided with annular groove 10, and two rubber rings 11 are set on the drive rod 1, and the rubber ring 11 is outer Circumferential wall is contacted with the bottom land of annular groove 10.

For in the prior art, loosening and causing workpiece base to be scrapped easily occur when workpiece 8 is fastened in fixture The present situation that rate increases, two grade fastenings of the present embodiment by grip block 3 and guide pad 2 to workpiece 8 so that workpiece 8 is in base 6 On stably fixed, cause that pine occurs in the contact between grip block 3 and workpiece 8 to avoid the vibration that is produced when being drilled It is dynamic, and then improve the machining accuracy of workpiece 8.Specific fastening flow is as follows：The ledge of workpiece 8 is first placed in the support of tubulose In seat 9, drive rod 1 forces grip block 3 to be in close contact with the outer wall of workpiece 8, while regulation first under outside powered Nut and the second nut so that adjusting rod 4 and the coupling assembly and connecting rod 7 of the formation of support bar 5 are respectively to the two of guide pad 2 Hold and promoted along the locality where workpiece 8, until the madial wall of guide pad 2 is mutually adjacent to the end face of grip block 3；Wherein, revolve Turn the second nut so that the end of connecting rod 7 is moved in blind hole, while ensureing one end end tool of the connecting rod 7 to guide pad 2 There are enough pulling force, rotate the first nut so that the other end end of guide pad 2 is realized relatively moving relative to adjusting rod 4, When workpiece base produces larger vibration because of drilling, the one-level of workpiece 8 is fastened by grip block 3, guide pad 2 and connecting rod 7, Two grades of fastenings that coupling assembly and base 6 are formed, it is ensured that the stability of workpiece 8, improve the machining accuracy of workpiece 8, while drop The scrappage of low workpiece base.

Wherein, when the applied stress produced after drilling tool and workpiece 8 interact is transferred to drive rod 1 by grip block 3, Drive rod 1 can produce nondirectional swing, and the connection being easily caused between drive rod 1 and the driving equipment of outside sustains damage, And the present embodiment at the middle part of guide pad 2, i.e., the part of guide pad 2 that drive rod 1 is run through opens up annular groove 10, and in drive rod Two rubber rings 11 are arranged on 1, the outer circle wall of rubber ring 11 is contacted with the bottom land of annular groove 10 so that in applied stress transmission During to drive rod 1, by rubber ring 11 in the interior deformation for occurring of annular groove 10 and elastic recovery, by acting on that drive rod 1 is subject to Firmly buffering is eliminated, and realizes the stable conditions of drive rod 1, ensures the stabilization scaling of the grip block 3 in long-term process, is entered And improve the processing efficiency of workpiece.

V-shaped groove is provided with side of the grip block 3 just to support base 9, multiple phases are installed in the V-shaped groove cell wall Mutually independently and in the holding shim 31 of circular arc, the axis of multiple holding shims 31 is parallel to each other.For the circumference of itself of workpiece 8 Outer wall, the circular arc clamping face of the present embodiment abandoning tradition to reduce stress surface excessive on the outer wall of workpiece 8, and then reduces work The damage that the outer wall of part 8 is formed by clamping, by V-shaped groove and the wall contacts of workpiece 8 so that no matter workpiece 8 itself model it is big Small change, can realize that the point between grip block 3 and break is contacted, to realize that the one-level to workpiece 8 is fastened, and in V-shaped groove Side wall on the holding shim 31 of multiple circular arcs is installed, multiple holding shims 31 are separate and axis is parallel to each other, and work as V When shape groove and 8 wall contacts of workpiece, two crooked ends of holding shim 31 after stress is deformed upon respectively directly with V-shaped groove Cell wall is contacted so that the hard contact between grip block 3 and workpiece 8 is changed into flexible contact, i.e., produced because of drilling in workpiece 8 and shaken The wear extent on the outer wall of workpiece 8 can be mitigated when dynamic, and then improve the processing quality of workpiece 8.

Preferably, the holding shim 31 of elastomeric material has good elastic resilience, in workpiece 8 and clamping When block 3 is disengaged, holding shim 31 can Quick-return deformation, to facilitate next workpiece 8 to carry out Drilling operation.

Preferably, the two ends of holding shim 31 prior to its middle part and the wall contacts of workpiece 8, and will clamp in stress The pressure that the two ends of pad 31 are born is greater than the pressure that its middle part is born, therefore the thickness at the two ends of holding shim 31 is more than it The thickness at middle part can extend the service life of holding shim 31.

Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect One step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the present utility model, is not used to limit Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equally replaces Change, improve, should be included within protection domain of the present utility model.

Claims (4)

1. auto parts machining fastening clips, including base（6）, guide pad（2）And it is arranged on base（6）One end it is prominent Rise, it is characterised in that：The support base of tubulose is installed in the middle part of the projection（9）, projection one end is fixed with support bar（5）, The projection other end is provided with blind hole, connecting rod（7）One end be placed in blind hole, and in connecting rod（7）On be provided with screw thread therewith and match somebody with somebody The first nut for closing, adjusting rod（4）One end activity runs through the guide pad（2）One end end and extend to and support bar（5）Even Connect, the guide pad（2）The other end and connecting rod（7）The other end be hinged, in adjusting rod（4）It is provided with therewith on the other end The second nut that screw thread coordinates；Also include drive rod（1）, the drive rod（1）Activity runs through guide pad（2）Middle part, and Drive rod（1）End be provided with just to support base（9）Grip block（3）, in the guide pad（2）Middle part be provided with annular groove （10）, two rubber rings（11）It is set in the drive rod（1）On, and the rubber ring（11）Outer circle wall and annular groove （10）Bottom land contact.

2. auto parts according to claim 1 machine fastening clips, it is characterised in that：In the grip block（3）Just To support base（9）Side on be provided with V-shaped groove, multiple separate and in circular arc folders are installed in the V-shaped groove cell wall Hold pad（31）, multiple holding shims（31）Axis be parallel to each other.

3. auto parts according to claim 2 machine fastening clips, it is characterised in that：The holding shim（31）'s Material is elastic caoutchouc.

4. auto parts according to claim 2 machine fastening clips, it is characterised in that：The two of the holding shim The thickness of individual end is more than the thickness in the middle part of it.