WO2023273161A1 - 一种撑紧定位机构 - Google Patents
一种撑紧定位机构 Download PDFInfo
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- WO2023273161A1 WO2023273161A1 PCT/CN2021/135383 CN2021135383W WO2023273161A1 WO 2023273161 A1 WO2023273161 A1 WO 2023273161A1 CN 2021135383 W CN2021135383 W CN 2021135383W WO 2023273161 A1 WO2023273161 A1 WO 2023273161A1
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- WIPO (PCT)
- Prior art keywords
- positioning
- groove
- power
- chute
- seat body
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 37
- 239000000428 dust Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
-
- 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
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Definitions
- the invention relates to the field of mechanical processing fixtures, in particular to a tightening and positioning mechanism suitable for aluminum alloy wheels and other rotary processing parts.
- the inventor provides a tensioning and positioning mechanism, including: a mounting base, a tensioning assembly, a positioning assembly and a power assembly; a first groove is provided at the axis of the bottom end of the mounting base; the The tightening assembly includes a positioning seat body and a wedge, the positioning seat body is fixed on the top end surface of the mounting seat, a second groove is provided at the axis of the top end surface of the positioning seat body, and the bottom axis of the second groove The center is provided with a first through hole that runs through the positioning seat body and the mounting seat in sequence to the first groove. There are also a number of positioning chute on the top end surface of the positioning seat body.
- the positioning chute is connected with the second concave
- the grooves are connected, and the other end extends to the outer wall of the positioning seat body.
- the positioning chute is centered on the axis of the second groove and arranged radially.
- the inclined wedge includes an inclined core, and the inclined core is arranged on In the second groove;
- the positioning assembly includes some positioning sliders, the positioning sliders are respectively arranged in the positioning chute, and the outer wall of the inclined core is provided with some T-shaped inclined slots equal to the number of the positioning sliders , the end of the positioning slider close to the inclined core is respectively provided with a T-shaped slider matching the T-shaped chute, and the bottom surface of the end of the positioning slider close to the inclined core is provided with a limit chute.
- the upper surface of the positioning seat body is fixed with a limit block that is compatible with the limit chute, and the limit block is used to limit the position of the positioning slider;
- the power assembly includes a power pull rod and a power spring, and the power
- the top of the pull rod is fixedly connected to the bottom end of the inclined core, the bottom end of the power pull rod extends out of the first groove, the power spring is arranged in the first groove, one end of the power spring is connected to the top of the first groove, and the other end is connected to the power spring.
- the bottom end of the tie rod is connected.
- the T-shaped chute is arranged obliquely along the direction in which the wedge gradually moves away from the central axis of the slant core from top to bottom, and the T-shaped sliding head is inserted in the T-shaped chute and is connected to the T-shaped chute. T-shaped chute sliding connection.
- a power spring sleeve with an upward opening is arranged in the first groove, and a second through hole through which the power pull rod passes is opened at the bottom of the power spring sleeve, and the bottom end of the power spring The part is connected with the inner bottom surface of the power spring sleeve.
- a chute is provided on the inner side wall of the first groove, and a sliding block is provided on the outer side wall of the power spring sleeve, and the sliding block is slidably connected in the chute.
- the tensioning assembly further includes a dust-proof cover plate, and the dust-proof cover plate is fixedly arranged on the top end surface of the positioning seat body for sealing the second groove and the positioning chute.
- a first sealing groove is provided on the bottom end surface of the dust-proof cover plate at the top end surface of the positioning slider, and a first sealing ring is provided in the first sealing groove.
- a second sealing groove is formed on the inner side wall of the first through hole on the mounting seat, and a second sealing ring is arranged in the second sealing groove.
- a third groove is provided on the top end surface of the mounting seat, the bottom end of the positioning seat body is fixed in the third groove, and the inner side wall of the third groove
- a third sealing groove is arranged on the top, and a third sealing ring is arranged in the third sealing groove.
- the axis of the inclined core is provided with a fixing hole through the inclined core, and the axis of the top end of the power tie rod is also provided with a fixing hole, and the inclined core and the power tie rod are fixed by bolts and Hole fixed connection.
- the dust cover, the positioning seat body and the mounting seat are fixedly connected by bolts.
- the setting of the power pull rod and the power spring in the scheme provides power for the downward pressure of the inclined core, and the downward pressure of the inclined core shrinks the positioning slider inward, and provides pressure for the contracted state of the positioning slider, so that the positioning slider maintains In the shrinking state, during this process, the positioning mechanism does not require the machine tool to provide additional power, which can effectively reduce the cost of machine tool configuration power, and enrich the versatility of the fixture, which is convenient for operators to debug and reduce later maintenance time and cost;
- Fig. 1 is a cross-sectional view of the tightening and positioning mechanism described in the specific embodiment
- Fig. 2 is the structural representation of the positioning chute described in the specific embodiment
- FIG. 3 is a schematic diagram of the connection structure between the T-shaped chute and the T-shaped sliding head described in the specific embodiment
- Fig. 3 is a schematic structural diagram of the positioning slider described in the specific embodiment.
- this embodiment provides a tensioning and positioning mechanism, including: a mounting seat 101, a tensioning assembly, a positioning assembly and a power assembly; There is a first groove 102; the tightening assembly includes a positioning seat body 201 and a wedge, the positioning seat body is fixed on the top end surface of the mounting seat, and a second groove 203 is provided at the axis of the top end surface of the positioning seat body.
- the axis at the bottom of the groove is provided with a first through hole that runs through the positioning seat body 201 and the mounting seat 101 in sequence to the first groove.
- a number of positioning chute 302 is also provided on the top end surface of the positioning seat body.
- the positioning chute is connected to The second groove is connected, and the other end extends to the outer wall of the positioning seat body.
- the positioning chute is centered on the axis of the second groove and arranged radially.
- the oblique wedge includes an oblique core 202, which is arranged on the second dimple.
- the positioning assembly includes some positioning sliders 301, and the positioning sliders are respectively arranged in the positioning chute 302, and the outer wall of the inclined core is provided with some T-shaped inclined grooves 303 equal to the number of the positioning sliders, and the positioning sliders
- One end of the block near the inclined core is respectively provided with a T-shaped sliding head 304 suitable for the T-shaped inclined groove, and the bottom surface of the end of the positioning slider near the inclined core is provided with a limit chute 305, and the upper surface of the positioning seat body is fixed.
- the limit block 306 suitable for the limit chute, and the limit block is used to limit the positioning slider;
- the power assembly includes a power pull rod 401 and a power spring 402, and the top end of the power pull rod is fixed to the bottom end of the inclined core Connection, the bottom end of the power pull rod extends out of the first groove 102, the power spring is arranged in the first groove, one end of the power spring is connected to the top of the first groove, and the other end is connected to the bottom end of the power pull rod.
- a space is reserved between the top or bottom of the slanting core 202 and the top or bottom of the second groove 203 , so as to provide space for the slanting core to move up and down.
- the limiting block adopts the screw method, that is, the screw is fixed on the positioning seat body, and the top end of the screw extends out of the upper surface of the positioning seat body and extends into the limiting chute , so as to play a limiting role.
- there are three positioning sliders 301 there are three corresponding positioning slide slots 302 .
- the T-shaped chute 303 is arranged obliquely along the direction that the wedge gradually moves away from the central axis of the slant core from top to bottom, and the T-shaped sliding head 304 is inserted in the T-shaped chute 303 and connected Sliding connection; in this embodiment, the setting of the T-shaped chute and the T-shaped sliding head effectively combines the inclined core and the positioning slider, and realizes the pressing down of the inclined core, the retraction of the positioning slider, and the upward movement of the inclined core.
- the positioning slider is reset or stretched out, so it can be seen that the structure is not only simple, but also easy to operate, and can be realized without resorting to external force.
- a power spring sleeve 403 with an upward opening is arranged in the first groove, and a second through hole through which the power pull rod 401 passes is provided at the bottom of the power spring sleeve.
- the inner bottom surface is connected; in this embodiment, the setting of the power spring sleeve can not only limit the position of the power pull rod, that is, when the top of the power spring sleeve touches the top of the first groove, the bottom end of the power pull rod is engaged with the power spring.
- the longitudinal section of the power pull rod is in an inverted T shape.
- the outer side wall of the power spring sleeve is provided with Slider 405, the slider is slidably connected in the chute, that is, in this embodiment, the moving distance of the power spring sleeve is controlled on the length of the chute by the limit slider fixedly arranged on the power spring sleeve, which can be specifically determined according to The length of the chute needs to be designed to adjust the removal length of the power spring sleeve.
- the chute can also be set as an annular chute, and the arrangement of the annular chute and the slider can also make the power spring sleeve rotate in the first groove to avoid the gap between the power spring sleeve and the first groove. Excessive stress between them will cause serious wear and tear, thereby improving the service life of the power spring sleeve, the first groove and the mounting seat.
- the tensioning assembly further includes a dustproof cover plate 204, which is fixed on the top end surface of the positioning seat body for sealing the second Groove 203 and positioning chute 302; the first sealing groove is provided on the bottom end surface of the dust cover plate at the top end surface of the positioning slider, and the first sealing ring 501 is arranged in the first sealing groove; A second sealing groove is opened on the inner side wall of the first through hole above, and a second sealing ring 502 is arranged in the second sealing groove; in this embodiment, the setting of the dust-proof cover can effectively prevent dust from entering In the second groove and the positioning chute, the movement of the oblique core and the extension and retraction of the positioning slider are affected, such as: the friction force in the work of the oblique wedge and the positioning slider is increased.
- the setting of the first sealing ring and the second sealing ring can make the dust cover and the positioning seat body, the mounting seat and the A sealed space can be formed between the oblique cores, so that lubricating oil or lithium-based grease can be injected into the sealed space to effectively reduce the friction force of the oblique wedge during the working process and avoid excessive stress and friction between the workpieces, causing damage to the workpiece. It can effectively improve the service life of each workpiece.
- a third sealing ring 503 is provided between the connection of the positioning seat body and the mounting seat to improve the sealing performance between the positioning seat body and the mounting seat.
- connection mode between the power rod and the oblique core of the oblique wedge can be that the axis of the oblique core is provided with a fixing hole through the oblique core, and the axis of the top end of the power rod is also provided with a fixing hole, and the oblique core and The power pull rod is fixedly connected with the fixing hole through the bolt 504; of course, in different embodiments, the wedge also includes a connecting portion, that is, a connecting portion extending downward is provided at the bottom of the inclined core, and the connecting portion is provided with a thread, and the extending portion It is threadedly connected with the fixing hole provided on the top of the power tie rod; or the fixing hole arranged on the slant core runs through the slant core and the extension in turn, and the wedge is fixedly connected with the power tie rod through bolts.
- the wedge also includes a connecting portion, that is, a connecting portion extending downward is provided at the bottom of the inclined core, and the connecting portion is provided with a thread,
- the slider is positioned. Move outward to realize the reset of the positioning slider; the principle of this action is that the inclined core and the positioning slider are inserted and installed in a T-shaped chute. If the machine tool has an oil cylinder with two-way force to drive the tightening and positioning mechanism, it can realize the positioning actions in two directions of external hugging and tightening.
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Abstract
一种撑紧定位机构，包括：安装座（101）、撑紧组件、定位组件和动力组件；安装座（101）底端端面轴心处设有第一凹槽（102）；撑紧组件包括定位座本体（201）和斜楔，定位座本体（201）固定设于安装座（101）顶端端面上，定位座本体（201）顶端端面轴心处设有第二凹槽（203），第二凹槽（203）底部轴心处开设有第一通孔，定位座本体（201）顶端端面上设有若干定位滑槽（302），斜楔包括斜芯（202），斜芯（202）设于第二凹槽（203）内；定位组件包括若干定位滑块（301），斜芯（202）外侧壁上设有若干T型斜槽（303），定位滑块（301）一端端部设有T型滑头（304），定位滑块（301）一端端部底面设有限位滑槽（305），定位座本体（201）上表面固定设有限位块（306），限位块（306）用于对定位滑块（301）进行限位；动力组件包括动力拉杆（401）和动力弹簧（402）。
Description
本发明涉及机械加工工装夹具领域，特别涉及一种适用于铝合金轮圈类回转加工零部件的撑紧定位机构。
随着世界汽车工业的迅猛发展，铝合金轮圈的重量轻、散热好、美观等优点不断被认可，使得汽车铝合金轮圈需求急剧增长。为了提高铝合金轮毂的加工效率、品质和成品率，对需要用到孔定位的轮圈等回转类工件，当机床仅配置夹持动力，未配置定位动力，但又需要实现定位自动撑紧定位时，此部件便可实现。
发明内容
为此，需要提供一种无需机床提供额外动力，降低机床配置动力的成本，以及丰富夹具的多功能性，方便操作员工调试，减少后期维护时间以及成本的撑紧定位机构。
为实现上述目的，发明人提供了一种撑紧定位机构，包括：安装座、撑紧组件、定位组件和动力组件；所述安装座底端端面轴心处设有第一凹槽；所述撑紧组件包括定位座本体和斜楔，所述定位座本体固定设于安装座顶端端面上，所述定位座本体顶端端面轴心处设有第二凹槽，所述第二凹槽底部轴心处开设有依次贯穿定位座本体和安装座，至第一凹槽的第一通孔，所述定位座本体顶端端面上还设有若干定位滑槽，所述定位滑槽一端与第二凹槽连通，另一端延伸至定位座本体的外侧壁，所述定位滑槽以第二凹槽的轴心为中心，呈放射状均布排列，所述斜楔包括斜芯，所述斜芯设于第二凹槽内；所述定位组件包括若干定位滑块，所述定位滑块分别设于定位滑槽内，所述 斜芯外侧壁上设有与定位滑块数量等同的若干T型斜槽，所述定位滑块靠近斜芯的一端端部分别设有与T型斜槽相适配的T型滑头，所述定位滑块靠近斜芯的一端端部底面设有限位滑槽，所述定位座本体上表面固定设有与限位滑槽相适配的限位块，所述限位块用于对定位滑块进行限位；所述动力组件包括动力拉杆和动力弹簧，所述动力拉杆顶端与斜芯底端端部固定连接，动力拉杆底端延伸出第一凹槽，所述动力弹簧设于第一凹槽内，动力弹簧一端与第一凹槽顶端连接，另一端与动力拉杆底端连接。
作为本发明的一种优选结构，所述T型斜槽沿着斜楔从上至下逐渐远离斜芯中心轴的方向倾斜设置，所述T型滑头插设于T型斜槽内、且与T型斜槽滑动连接。
作为本发明的一种优选结构，所述第一凹槽内设有开口向上的动力弹簧套，所述动力弹簧套底部开设有动力拉杆穿过的第二通孔，所述动力弹簧底端端部与动力弹簧套的内底面连接。
作为本发明的一种优选结构，所述第一凹槽的内侧壁开设有滑槽，所述动力弹簧套的外侧壁设有滑块，所述滑块在滑槽内滑动连接。
作为本发明的一种优选结构，所述撑紧组件还包括防尘盖板，所述防尘盖板固定设于定位座本体顶端端面上，用于密封第二凹槽和定位滑槽。
作为本发明的一种优选结构，位于定位滑块顶端端面处的防尘盖板底端端面上开设有第一密封槽，所述第一密封槽内设有第一密封圈。
作为本发明的一种优选结构，位于安装座上的第一通孔的内侧壁上开设有第二密封槽，所述第二密封槽内设有第二密封圈。
作为本发明的一种优选结构，所述安装座顶端端面上设有第三凹槽，所述定位座本体底端端部固定设于第三凹槽内，所述第三凹槽的内侧壁上设有第三密封槽，所述第三密封槽内设有第三密封圈。
作为本发明的一种优选结构，所述斜芯轴心处设有贯穿斜芯的固定孔，所述动力拉杆顶端轴心处也设有固定孔，所述斜芯和动力拉杆通过螺栓和固 定孔固定连接。
作为本发明的一种优选结构，所述防尘盖板、定位座本体和安装座通过螺栓固定连接。
区别于现有技术，上述技术方案所达到的有益效果有：
(1)方案中动力拉杆和动力弹簧的设置给斜芯的下压提供了动力，斜芯下压将定位滑块向内收缩，并给定位滑块的收缩状态提供压力，使得定位滑块保持收缩状态，在此过程中，本定位机构无需机床提供额外的动力，从而可以有效的降低机床配置动力的成本，以及丰富夹具的多功能性，方便操作员工调试，减少后期维护时间以及成本；
(2)方案中T型斜槽和T型滑头的设置，有效的将斜芯和定位滑块组合到一起，并实现斜芯下压，定位滑块收回，斜芯上移，定位滑块复位或伸出，可见本结构不仅简单，而且便于操作，无需借助外力即可实现。
图1为具体实施方式所述撑紧定位机构剖视图；
图2为具体实施方式所述定位滑槽结构示意图；
图3为具体实施方式所述T型滑槽与T型滑头连接结构示意图；
图3为具体实施方式所述定位滑块结构示意图。
附图标记说明：
101、安装座；102、第一凹槽；201、定位座本体；
202、斜芯；203、第二凹槽；204、防尘盖板；
301、定位滑块；302、定位滑槽；303、T型斜槽；
304、T型滑头；305、限位滑槽；306、限位块；401、动力拉杆；
402、动力弹簧；403、动力弹簧套；404、滑槽；405、滑块；
501、第一密封圈；502、第二密封圈；503、第三密封圈；
504、螺栓。
为详细说明技术方案的技术内容、构造特征、所实现目的及效果，以下结合具体实施例并配合附图详予说明。
请一并参阅1至图4，如图所示，本实施例提供了一种撑紧定位机构，包括：安装座101、撑紧组件、定位组件和动力组件；安装座底端端面轴心处设有第一凹槽102；撑紧组件包括定位座本体201和斜楔，定位座本体固定设于安装座顶端端面上，定位座本体顶端端面轴心处设有第二凹槽203，第二凹槽底部轴心处开设有依次贯穿定位座本体201和安装座101，至第一凹槽的第一通孔，定位座本体顶端端面上还设有若干定位滑槽302，定位滑槽一端与第二凹槽连通，另一端延伸至定位座本体的外侧壁，定位滑槽以第二凹槽的轴心为中心，呈放射状均布排列，斜楔包括斜芯202，斜芯202设于第二凹槽203内；定位组件包括若干定位滑块301，定位滑块分别设于定位滑槽302内，斜芯外侧壁上设有与定位滑块数量等同的若干T型斜槽303，定位滑块靠近斜芯的一端端部分别设有与T型斜槽相适配的T型滑头304，定位滑块靠近斜芯的一端端部底面设有限位滑槽305，定位座本体上表面固定设有与限位滑槽相适配的限位块306，限位块用于对定位滑块进行限位；动力组件包括动力拉杆401和动力弹簧402，动力拉杆顶端与斜芯底端端部固定连接，动力拉杆底端延伸出第一凹槽102，动力弹簧设于第一凹槽内，动力弹簧一端与第一凹槽顶端连接，另一端与动力拉杆底端连接。
在上述实施例中，斜芯202顶端或底端与第二凹槽203的顶部或底部之间预留有空间，从而给斜芯的上下移动提供空间。如图1所示，在本实施例中，限位块采用螺钉的方式，即在定位座本体上固定设置螺钉，螺钉的顶端延伸出定位座本体的上表面，并延伸至限位滑槽内，从而起到限位的作用。如图2所示，在本实施例中，定位滑块301设有三个，那相对应的定位滑槽也302设有三个。
在上述实施例中，T型斜槽303沿着斜楔从上至下逐渐远离斜芯中心轴的方向倾斜设置，T型滑头304插设于T型斜槽303内、且与T型斜槽滑动连接；在本实施例中，T型斜槽和T型滑头的设置，有效的将斜芯和定位滑块组合到一起，并实现斜芯下压，定位滑块收回，斜芯上移，定位滑块复位或伸出，可见本结构不仅简单，而且便于操作，无需借助外力即可实现。
如图1所示，第一凹槽内设有开口向上的动力弹簧套403，动力弹簧套底部开设有动力拉杆401穿过的第二通孔，动力弹簧402底端端部与动力弹簧套的内底面连接；在本实施例中，动力弹簧套的设置不仅可以对动力拉杆进行限位，即动力弹簧套的顶端抵触在第一凹槽的顶部时，动力拉杆的底端卡合在动力弹簧套的底端端面上，在本实施例中，动力拉杆的纵向截面呈倒T形。为了避免动力弹簧套在伸出过程中不会从第一凹槽内脱落出，在一些实施例中，通过在第一凹槽的内侧壁开设有滑槽404，动力弹簧套的外侧壁设有滑块405，滑块在滑槽内滑动连接，即在本实施例中，通过动力弹簧套上固定设置的限位滑块将动力弹簧套的移动距离控制在滑槽的长度上，具体可根据需要对滑槽的长度进行设计，从而来调整动力弹簧套的移出长度。除此之外，还可以将滑槽设置成环形滑槽，环形滑槽和滑块的设置，还可以使得动力弹簧套在第一凹槽内转动，来避免动力弹簧套与第一凹槽之间应力过大，造成磨损严重，从而提高动力弹簧套、第一凹槽和安装座的使用寿命。
为了提高撑紧定位机构的整体密封性能，在某些实施例中，撑紧组件还包括防尘盖板204，所述防尘盖板固定设于定位座本体顶端端面上，用于密封第二凹槽203和定位滑槽302；位于定位滑块顶端端面处的防尘盖板底端端面上开设有第一密封槽，所述第一密封槽内设有第一密封圈501；位于安装座上的第一通孔的内侧壁上开设有第二密封槽，所述第二密封槽内设有第二密封圈502；在本实施例中，防尘盖板的设置可以有效的避免灰尘进入第二凹槽和定位滑槽内，对斜芯的移动和定位滑块的伸出和缩进带来影响，如：增加了斜楔和定位滑块工作中的摩擦力，摩擦力一旦增加，就会导致工作时效变低， 以及移动过程中产生大量热量，从而影响机构的使用寿命；此外，第一密封圈、第二密封圈的设置可以使得防尘盖板与定位座本体、安装座与斜芯之间可以形成密封空间，从而可以对密封空间内注入润滑油或锂基脂，来有效降低斜楔在工作过程中的摩擦力，避免工件之间的应力摩擦过大，造成工件损伤，可有效提高各工件的使用寿命。除此之外，在定位座本体和安装座连接处之间设有第三密封圈503，提高定位座本体和安装座之间的密封性能，在不同的实施例中，安装座顶端端面上设有第三凹槽，定位座本体底端端部固定设于第三凹槽内；在本实施例中，第三密封圈设于第三凹槽的内侧壁上(如图1所示)。
在上述实施例中，动力拉杆与斜楔的斜芯之间的连接方式可以为斜芯轴心处设有贯穿斜芯的固定孔，动力拉杆顶端轴心处也设有固定孔，斜芯和动力拉杆通过螺栓504和固定孔固定连接；当然在不同的实施例中，斜楔还包括连接部，即在斜芯底端设置向下延伸的连接部，连接部上设有螺纹，通过延伸部和动力拉杆顶端设置的固定孔螺纹连接；或者斜芯上设置的固定孔依次贯穿斜芯和延伸部，通过螺栓将斜楔与动力拉杆固定连接。为了提高防尘盖板、定位座本体和安装座之间的稳定性，促使三者之间一体化，在本实施例中，防尘盖板、定位座本体和安装座可以通过螺栓504将三者一体化固定连接。
工作原理：机床夹持动力杆运动使夹具压爪开始下压，此时撑紧定位机构的动力弹簧脱离了机床动力的束缚开始舒展为动力拉杆和定位滑块的运动提供动力，动力拉杆带动斜芯下拉，使定位滑块由外向向内抱紧。以上为定位动作。机床夹持动力杆放松回位时使夹具压爪开始放松，此时机床夹持动力杆推动动力拉杆使动力弹簧压紧失去对斜芯提供的动力并推动斜芯向上运动，此时定位滑块向外运动，实现定位滑块的复位；此动作实现原理为斜芯与定位滑块是用T型斜槽方式卡进去安装。如果机床有油缸有双向力驱动此撑紧定位机构的情况下，可实现外抱、以及撑紧两个方向的定位动作。
需要说明的是，尽管在本文中已经对上述各实施例进行了描述，但并非因此限制本发明的专利保护范围。因此，基于本发明的创新理念，对本文所述实施例进行的变更和修改，或利用本发明说明书及附图内容所作的等效结构或等效流程变换，直接或间接地将以上技术方案运用在其他相关的技术领域，均包括在本发明的专利保护范围之内。
Claims (10)
- 一种撑紧定位机构，其特征在于，包括：安装座、撑紧组件、定位组件和动力组件；所述安装座底端端面轴心处设有第一凹槽；所述撑紧组件包括定位座本体和斜楔，所述定位座本体固定设于安装座顶端端面上，所述定位座本体顶端端面轴心处设有第二凹槽，所述第二凹槽底部轴心处开设有依次贯穿定位座本体和安装座，至第一凹槽的第一通孔，所述定位座本体顶端端面上还设有若干定位滑槽，所述定位滑槽一端与第二凹槽连通，另一端延伸至定位座本体的外侧壁，所述定位滑槽以第二凹槽的轴心为中心，呈放射状均布排列，所述斜楔包括斜芯，所述斜芯设于第二凹槽内；所述定位组件包括若干定位滑块，所述定位滑块分别设于定位滑槽内，所述斜芯外侧壁上设有与定位滑块数量等同的若干T型斜槽，所述定位滑块靠近斜芯的一端端部分别设有与T型斜槽相适配的T型滑头，所述定位滑块靠近斜芯的一端端部底面设有限位滑槽，所述定位座本体上表面固定设有与限位滑槽相适配的限位块，所述限位块用于对定位滑块进行限位；所述动力组件包括动力拉杆和动力弹簧，所述动力拉杆顶端与斜芯底端端部固定连接，动力拉杆底端延伸出第一凹槽，所述动力弹簧设于第一凹槽内，动力弹簧一端与第一凹槽顶端连接，另一端与动力拉杆底端连接。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述T型斜槽沿着斜楔从上至下逐渐远离斜芯中心轴的方向倾斜设置，所述T型滑头插设于T型斜槽内、且与T型斜槽滑动连接。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述第一凹槽内设有开口向上的动力弹簧套，所述动力弹簧套底部开设有动力拉杆穿过的第二通孔，所述动力弹簧底端端部与动力弹簧套的内底面连接。
- 根据权利要求3所述的撑紧定位机构，其特征在于：所述第一凹槽的内侧壁开设有滑槽，所述动力弹簧套的外侧壁设有滑块，所述滑块在滑槽内 滑动连接。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述撑紧组件还包括防尘盖板，所述防尘盖板固定设于定位座本体顶端端面上，用于密封第二凹槽和定位滑槽。
- 根据权利要求5所述的撑紧定位机构，其特征在于：位于定位滑块顶端端面处的防尘盖板底端端面上开设有第一密封槽，所述第一密封槽内设有第一密封圈。
- 根据权利要求1所述的撑紧定位机构，其特征在于：位于安装座上的第一通孔的内侧壁上开设有第二密封槽，所述第二密封槽内设有第二密封圈。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述安装座顶端端面上设有第三凹槽，所述定位座本体底端端部固定设于第三凹槽内，所述第三凹槽的内侧壁上设有第三密封槽，所述第三密封槽内设有第三密封圈。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述斜芯轴心处设有贯穿斜芯的固定孔，所述动力拉杆顶端轴心处也设有固定孔，所述斜芯和动力拉杆通过螺栓和固定孔固定连接。
- 根据权利要求1所述的撑紧定位机构，其特征在于：所述防尘盖板、定位座本体和安装座通过螺栓固定连接。
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