CN204321934U - A kind of circular hole centering tool - Google Patents
A kind of circular hole centering tool Download PDFInfo
- Publication number
- CN204321934U CN204321934U CN201420850044.9U CN201420850044U CN204321934U CN 204321934 U CN204321934 U CN 204321934U CN 201420850044 U CN201420850044 U CN 201420850044U CN 204321934 U CN204321934 U CN 204321934U
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- round hole
- centering
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- centering tool
- hole
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
本实用新型公开了一种圆孔定心工具，其特征在于，包括一定心平板(1)，所述定心平板(1)中心设为用于粉笔、水笔或记号笔画线的涂写板表面，所述定心平板(1)周向设有外延的呈十字分布的四只支臂(2)，其中，处于同一直线上的两只支臂端部设有长度可调机构，另两只支臂的端部设有将其搭接在待测圆孔上表面的台阶部(3)。本实用新型定心工具通过台阶部(2)以及两短边上的长度调节机构被固定于被测圆孔上，恰使得工具平面与被测圆孔平面处于同一个面上，再以圆孔半径为半径用长圆规在圆孔边缘上任意选两点划两条圆弧，两圆弧在平面上的交点即为该圆孔圆心点，此过程方便、准确、定位快速且稳定。
The utility model discloses a round hole centering tool, which is characterized in that it comprises a centering flat plate (1), and the center of the centering flat plate (1) is set as the surface of a scribbling board for chalk, water pen or marking pen to draw lines. The centering plate (1) is provided with four extension arms (2) distributed in a cross in the circumferential direction, wherein the ends of the two arms on the same straight line are provided with length-adjustable mechanisms, and the ends of the other two arms are There is a step part (3) that overlaps the upper surface of the round hole to be tested. The centering tool of the utility model is fixed on the measured round hole through the step part (2) and the length adjustment mechanism on the two short sides, so that the tool plane and the measured round hole plane are on the same plane, and then the round hole The radius is the radius. Use a long compass to randomly select two points on the edge of the circular hole to draw two circular arcs. The intersection point of the two circular arcs on the plane is the center point of the circular hole. This process is convenient, accurate, and the positioning is fast and stable.
Description
技术领域technical field
本实用新型涉及一种机械加工工具领域，具体涉及一种高效的圆孔定心工具。The utility model relates to the field of machining tools, in particular to an efficient round hole centering tool.
背景技术Background technique
在对由金属、木材、塑料等材料制成的工件的圆孔圆心进行定位，从而测得其空间坐标时，通常会用到圆心定位工具。目前常用的方法是将一块平板置于圆孔上方，进而采用几何方法将圆心找出，但此法测得的圆心与工件表面不在同一平面上，且平板易移动，往往造成需重复定位，给操作人员带来很多不便，工作效率低下。When locating the center of a circular hole of a workpiece made of metal, wood, plastic, etc., and measuring its spatial coordinates, a center positioning tool is usually used. At present, the commonly used method is to place a flat plate above the circular hole, and then use geometric methods to find the center of the circle, but the center of the circle measured by this method is not on the same plane as the surface of the workpiece, and the plate is easy to move, often resulting in the need for repeated positioning. Operators bring a lot of inconvenience and low work efficiency.
发明内容Contents of the invention
本实用新型为避免现有技术存在的不足之处，提供了一种实用、便捷、定心精确的圆孔圆心定位工具。In order to avoid the disadvantages of the prior art, the utility model provides a practical, convenient and accurate centering tool for positioning the center of a circular hole.
本实用新型解决技术问题采用如下技术方案：The utility model solves the technical problem and adopts the following technical solutions:
一种圆孔定心工具，其结构特点在于，包括一定心平板，所述定心平板中心设为用于粉笔、水笔或记号笔画线的涂写板表面，所述定心平板周向设有外延的呈十字分布的四只支臂，其中，处于同一直线上的两只支臂端部设有长度可调机构，另两只支臂的端部设有将其搭接在待测圆孔上表面的台阶部。A round hole centering tool, its structural feature is that it includes a centering plate, the center of the centering plate is set as the surface of the scribbling board used for chalk, pen or marker pen drawing lines, and the centering plate is provided with extensions in the form of crosses in the circumferential direction. Among them, the ends of the two arms on the same straight line are provided with length-adjustable mechanisms, and the ends of the other two arms are provided with steps that overlap the upper surface of the round hole to be tested. .
本实用新型结构特点还在于：The structural features of the utility model also lie in:
所述长度可调机构由位于支臂端部下方的连接部、调节螺杆、以及压缩弹簧组成，所述连接部设有光孔，所述调节螺杆穿过光孔，其内端与螺母配合，外端为顶紧部；所述压缩弹簧穿在调节螺杆上并压缩于光孔与顶紧部之间。The length-adjustable mechanism is composed of a connection part located below the end of the support arm, an adjustment screw, and a compression spring. The connection part is provided with a light hole, and the adjustment screw passes through the light hole, and its inner end is matched with a nut. The outer end is a tightening part; the compression spring is worn on the adjusting screw rod and compressed between the light hole and the tightening part.
本实用新型结构特点还在于：The structural features of the utility model also lie in:
所述顶紧部的端部为一向上折弯的弹性板。The end of the tightening part is an upwardly bent elastic plate.
所述弹性板外表设有弹性塑胶层。The elastic plate is provided with an elastic plastic layer on its outer surface.
所述长度可调机构为一调节螺栓，所述调节螺栓与支臂端部下方的连接部螺纹连接。The length-adjustable mechanism is an adjusting bolt, and the adjusting bolt is threadedly connected with the connection part below the end of the support arm.
与已有技术相比，本实用新型有益效果体现在：Compared with the prior art, the beneficial effects of the utility model are reflected in:
本实用新型结构简单，实用便捷，可快速对被测工件圆孔圆心进行精准、一次定位，大大提高了工作效率。The utility model has the advantages of simple structure, practicality and convenience, and can quickly and precisely locate the center of the circular hole of the workpiece to be measured, thereby greatly improving the working efficiency.
说明书附图Instructions attached
图1是本实用新型实结构示意图。Fig. 1 is the utility model real structural representation.
图中标号：1定心板、2支臂、3台阶部、4连接部、5压缩弹簧、6螺母、7弹性板。Symbols in the figure: 1 centering plate, 2 support arm, 3 step part, 4 connecting part, 5 compression spring, 6 nut, 7 elastic plate.
具体实施方式Detailed ways
如图1所示，圆孔定心工具，包括一定心平板1，定心平板1定心平板中心设为用于粉笔、水笔或记号笔画线的涂写板表面，定心平板周向设有外延的呈十字分布的四只支臂2，其中，处于同一直线上的两只支臂端部设有长度可调机构，另两只支臂的端部设有将其搭接在待测圆孔水平面上的台阶部3。如图1所示，长度可调机构由位于支臂端部下方的连接部4、调节螺杆(图中被遮挡)、以及压缩弹簧5组成，连接部4设有光孔，调节螺杆穿过光孔，其内端与螺母6配合，外端为顶紧部；压缩弹簧5穿在调节螺杆上并压缩于光孔与顶紧部之间。As shown in Figure 1, the round hole centering tool includes a centering plate 1, and the center of the centering plate 1 is set as the surface of the scribbling board used for chalk, pen or marker drawing lines, and the centering plate is provided with extensions in a cross distribution around the circumference. The four support arms 2, wherein, the ends of the two support arms on the same straight line are provided with length-adjustable mechanisms, and the ends of the other two support arms are provided with steps to overlap them on the horizontal plane of the round hole to be measured Part 3. As shown in Figure 1, the length-adjustable mechanism is composed of a connecting part 4 located below the end of the support arm, an adjusting screw (covered in the figure), and a compression spring 5. The connecting part 4 is provided with a light hole, and the adjusting screw passes through the light hole. The inner end of the hole is matched with the nut 6, and the outer end is the top tight part; the compression spring 5 is passed on the adjusting screw rod and compressed between the light hole and the top tight part.
进一步，顶紧部的端部设为一向上折弯的弹性板7，弹性板外表设有弹性塑胶层。Further, the end of the tightening part is set as an upwardly bent elastic plate 7, and an elastic plastic layer is provided on the surface of the elastic plate.
使用时，根据圆孔的尺寸大小，先通过螺母调节螺杆的伸长长度，使两边的长度可调机构伸长长度稍超出圆孔的直径，然后将夹具置于待测圆孔上方，直接下压工具，至台阶部搭接在待测圆孔的上表面，此时，调节螺杆受压收缩，压缩弹簧收缩，通过压缩弹簧的回复力将螺杆的顶紧部顶紧在圆孔内壁，从而将工具卡紧在圆孔中，而台阶部起到限位作用，向上折弯的弹性板上的弹性塑胶层有利于保护圆孔内壁不受磨损。当圆心定位后，通过弹性板给予一个向心推力即可将工具从圆孔中取出，使用十分方便。When in use, according to the size of the round hole, first adjust the elongation of the screw through the nut so that the elongation of the length-adjustable mechanism on both sides slightly exceeds the diameter of the round hole, then place the fixture above the round hole to be measured, and directly lower it. Press the tool until the step overlaps the upper surface of the round hole to be tested. At this time, the adjusting screw shrinks under pressure, the compression spring shrinks, and the tightening part of the screw is pressed against the inner wall of the round hole by the restoring force of the compression spring, thereby The tool is clamped in the round hole, and the step part acts as a limiter, and the elastic plastic layer on the upwardly bent elastic plate is beneficial to protect the inner wall of the round hole from abrasion. After the center of the circle is positioned, the tool can be taken out from the round hole by giving a centripetal thrust through the elastic plate, which is very convenient to use.
本实用新型长度可调机构也可以直接为一调节螺杆，调节螺杆与支臂端部下方的连接部螺纹连接。使用时，先将台阶部3置于被测工件圆孔上方，再通过调节螺杆4调整螺栓4的伸长长度，使得螺栓与圆孔内表面顶紧，从而将工具固定于被测工件圆孔上，使得工具定心平板1与被测工件平面同面，再以圆孔半径为半径用长圆规在圆孔边缘上任意选两点划两条圆弧，两圆弧在定心平板1上的交点即为该圆孔圆心点。具体实施时，台阶部3设置为长度可调的抽拉结构。The length-adjustable mechanism of the utility model can also directly be an adjusting screw rod, and the adjusting screw rod is threadedly connected with the connection part below the end of the support arm. When in use, first place the step part 3 above the round hole of the workpiece to be measured, and then adjust the elongation of the bolt 4 by adjusting the screw rod 4, so that the bolt is tightly pressed against the inner surface of the round hole, thereby fixing the tool to the round hole of the workpiece to be measured , so that the tool centering plate 1 is on the same plane as the workpiece to be measured, and then use a long compass to randomly select two points on the edge of the hole to draw two arcs with the radius of the hole as the radius, and the two arcs are on the centering plate 1 The intersection point is the center point of the circular hole. During specific implementation, the stepped portion 3 is set as a drawer structure with adjustable length.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850044.9U CN204321934U (en) | 2014-12-26 | 2014-12-26 | A kind of circular hole centering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850044.9U CN204321934U (en) | 2014-12-26 | 2014-12-26 | A kind of circular hole centering tool |
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| Publication Number | Publication Date |
|---|---|
| CN204321934U true CN204321934U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850044.9U Expired - Lifetime CN204321934U (en) | 2014-12-26 | 2014-12-26 | A kind of circular hole centering tool |
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| Country | Link |
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| CN (1) | CN204321934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709471A (en) * | 2018-05-04 | 2018-10-26 | 桂林电子科技大学 | Flexible circular arc center of circle positioning device |
| CN110181476A (en) * | 2019-05-28 | 2019-08-30 | 沪东中华造船(集团)有限公司 | A method of for the secondary aperture positioning of ship |
| CN110936230A (en) * | 2019-12-18 | 2020-03-31 | 广西柳工机械股份有限公司 | Round hole center positioning device, round hole center line drawing and distance measuring device |
-
2014
- 2014-12-26 CN CN201420850044.9U patent/CN204321934U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709471A (en) * | 2018-05-04 | 2018-10-26 | 桂林电子科技大学 | Flexible circular arc center of circle positioning device |
| CN110181476A (en) * | 2019-05-28 | 2019-08-30 | 沪东中华造船(集团)有限公司 | A method of for the secondary aperture positioning of ship |
| CN110936230A (en) * | 2019-12-18 | 2020-03-31 | 广西柳工机械股份有限公司 | Round hole center positioning device, round hole center line drawing and distance measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150513 |