CN109458914B - Inclined hole depth measuring tool - Google Patents
Inclined hole depth measuring tool Download PDFInfo
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- CN109458914B CN109458914B CN201811368544.8A CN201811368544A CN109458914B CN 109458914 B CN109458914 B CN 109458914B CN 201811368544 A CN201811368544 A CN 201811368544A CN 109458914 B CN109458914 B CN 109458914B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
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Abstract
The invention belongs to the technical field of measurement, and relates to an inclined hole depth measuring tool, which comprises a sliding measuring block and a measuring core rod; the sliding gauge block is provided with a core rod through hole; measuring the outer diameter of the core rod to be slightly smaller than the inner diameter of the core rod through hole; the measuring core rod can freely slide in the core rod through hole. The invention provides the inclined hole depth measuring tool which can quickly and effectively measure the inclined hole and ensure the measuring precision.
Description
Technical Field
The invention belongs to the technical field of measurement, relates to a measuring tool, and particularly relates to an inclined hole depth measuring tool.
Background
At present, when the depth of a blind hole is measured, a depth gauge or a vernier caliper is often adopted for direct measurement. However, when the blind hole has a certain angle with the horizontal plane, that is, when the depth of the inclined hole needs to be measured, the depth gauge cannot be well attached to the horizontal plane or the vertical plane, or the upper surface of the part interferes with the depth gauge, so that the measurement cannot be directly carried out; when the vernier caliper is adopted, the measurement error is large when the vernier caliper extends into the inclined hole and stops at different positions of the inclined hole. For example, the inner diameter of the inclined hole is 5mm, the design depth is 8cm, the vernier caliper extends into the inclined hole and cannot be parallel to the axial direction of the inclined hole, and the measurement result is certainly larger than 8cm (the depth of the inclined hole is 8cm, and the inner diameter of the inclined hole is 5mm, and the inner diameter of the inclined hole is the hypotenuse of a right triangle formed by right-angled sides); when the bottommost part of the inclined hole is conical, even if the vernier caliper is parallel to or coincided with the axial direction of the inclined hole, the end part of the vernier caliper is stopped against the conical tip of the inclined hole, the measuring result is still larger than 8cm, obvious errors are caused, and the measurement is inaccurate.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides an inclined hole depth measuring tool which can quickly and effectively measure an inclined hole and ensure the measurement accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
an inclined hole depth measuring tool is characterized in that: the inclined hole depth measuring tool comprises a sliding measuring block and a measuring core rod; the sliding gauge block is provided with a core rod through hole; the outer diameter of the measuring core rod is slightly smaller than the inner diameter of the core rod through hole; the measuring core rod can freely slide in the core rod through hole.
The sliding gauge block comprises a first sliding gauge block and a second sliding gauge block arranged together with the first sliding gauge block; the length of the first sliding gauge block is greater than that of the second sliding gauge block; the cross sections of the first sliding gauge block and the second sliding gauge block are L-shaped as a whole; the end surface of the part of the first sliding measuring block, which is longer than the second sliding measuring block, is a measuring end surface, and the bottom of the measuring end surface is a joint edge; the core rod through hole is arranged between the first sliding gauge block and the second sliding gauge block along the length direction of the first sliding gauge block.
The hole center of the core rod through hole is arranged on the attaching edge.
The axis of the core rod through hole is vertical to the measuring end face.
The number of the mandrel through holes is one or more, and when the number of the mandrel through holes is plural, the inner diameters of the plurality of mandrel through holes are not equal.
When the number of the mandrel through holes is plural, the number of the measuring mandrels corresponds to the number of the mandrel through holes.
The inclined hole depth measuring tool also comprises a jacking screw arranged on the sliding measuring block; and the jacking screw extends into the core rod through hole from the outside of the sliding gauge block and jacks the measuring core rod in the core rod through hole.
The outer surface of the jacking screw is provided with anti-skid grains.
The outer surface of the measuring core rod is provided with scales.
The invention has the advantages that:
the invention provides an inclined hole depth measuring tool, which comprises a sliding measuring block and a measuring core rod, wherein the sliding measuring block is arranged on the measuring core rod; the sliding gauge block is provided with a core rod through hole; measuring the outer diameter of the core rod to be slightly smaller than the inner diameter of the core rod through hole; the measuring core rod can freely slide in the core rod through hole. When the device is used, a proper measuring core rod is selected according to the inner diameter of the inclined hole to be measured, the outer diameter of the measuring core rod is slightly smaller than the inner diameter of the inclined hole to be measured so as to ensure that the axial directions of the measuring core rod and the inclined hole to be measured are parallel or coincident, then the sliding measuring block is slid and rotated to enable the sliding measuring block to be attached to the upper surface of the inclined hole to be measured, the relative positions of the sliding measuring block and the measuring core rod are fixed to avoid dislocation or movement of the sliding measuring block and the measuring core rod, the measuring core rod with the fixed position of the sliding measuring block is directly taken out, the distance between the sliding measuring block and the end part of the measuring core rod is measured by using a vernier caliper. The invention manufactures the measuring core rods with different apertures, eliminates the shaking clearance of the measuring rod in the hole when the measuring rod is measured by the caliper, thereby improving the measuring precision and quickly and effectively measuring the depth of the inclined hole. The accuracy of the depth measurement of the inclined hole is improved. The measuring tool is used for direct measurement to replace the reduction of inclined hole measurement, the design and manufacture quantity of special measuring tools and measuring tools is reduced or even eliminated, the cost is saved, the part measurement production period is shortened, and the field management of the tool measuring tool is convenient. The method is mainly applied to the measurement of the depth of the inclined hole of the complex shell of the aviation fuel accessory, and the depth of the inclined hole can be accurately and visually measured at any angle and in any aperture size in the research process of the method.
Drawings
FIG. 1 is a schematic view of a depth measuring tool for an inclined hole according to the present invention;
FIG. 2 is a schematic structural view of a sliding gauge block used in the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A;
FIG. 4 is a schematic view of a measurement process of the slant hole depth gauge provided in the present invention;
wherein:
1-measuring the core rod; 2-sliding the gauge block; 21-measuring the end face; 22-attaching edges; 23-core rod through hole; 24-an interference notch; 25-a first sliding gauge block; 26-a second sliding gauge block; and 3, tightening the screw.
Detailed Description
Referring to fig. 1, the present invention provides an inclined hole depth measuring tool, which includes a sliding gauge block 2 and a measuring core rod 1; the sliding gauge block 2 is provided with a core rod through hole 23; the outer diameter of the measuring core rod 1 is slightly smaller than the inner diameter of the core rod through hole 23; the measuring plug 1 is slidable in the plug through hole 23, and the end of the measuring plug 1 is flush.
When the device is used specifically, firstly, a proper measuring core rod 1 is selected according to the inner diameter of the inclined hole to be measured, the outer diameter of the measuring core rod 1 is slightly smaller than the inner diameter of the inclined hole to be measured so as to ensure that the axial direction of the measuring core rod 1 is parallel to or coincident with the axial direction of the inclined hole to be measured, then, the sliding measuring block 2 is slid and rotated to enable the sliding measuring block 2 to be attached to the upper surface of the inclined hole to be measured, the relative position of the sliding measuring block 2 and the measuring core rod 1 is fixed to avoid dislocation or movement of the two, the measuring core rod 1 with the fixed position of the sliding measuring block 2 is directly taken out, the distance between the sliding measuring block 2 and the end part of the measuring core rod 1 is measured by using a vernier caliper or.
Referring to fig. 2 and 3, the sliding gauge block 2 used in the present invention includes a first sliding gauge block 25 and a second sliding gauge block 26 disposed together with the first sliding gauge block 25; the length of the first sliding gauge block 25 is greater than the length of the second sliding gauge block 26; an interference notch 24 is formed between the first sliding gauge block 25 and the second sliding gauge block 26, and the cross sections of the first sliding gauge block 25 and the second sliding gauge block 26 are L-shaped as a whole; the end surface of the part of the first sliding gauge block 25, which is longer than the second sliding gauge block 26, is a measuring end surface 21, and the bottom of the measuring end surface 21 is a joint edge 22; the core rod through hole 23 is disposed along the length direction of the first sliding gauge block 25 and between the first sliding gauge block 25 and the second sliding gauge block 26.
As described above, when the present invention is used specifically, firstly, an appropriate measuring core rod 1 is selected according to the inner diameter of the inclined hole to be measured, the outer diameter of the measuring core rod 1 is slightly smaller than the inner diameter of the inclined hole to be measured, so as to ensure that the axial directions of the measuring core rod 1 and the inclined hole to be measured are parallel or coincident, then, the sliding gauge block 2 is slid and rotated, the attaching edge 22 of the sliding gauge block 2 is made to attach to the upper surface of the inclined hole to be measured, the relative position of the sliding gauge block 2 and the measuring core rod 1 is fixed, so as to avoid the dislocation or movement of the two, the measuring core rod 1 with the fixed position of the sliding gauge block 2 is directly taken out, the distance between the measuring end face 21 on the sliding gauge block 2 and the end portion of the measuring core rod 1 is measured by using.
Referring to fig. 2 and fig. 3, in order to ensure that the axis of the measuring core rod 1 coincides with the axis of the inclined hole to be measured, the hole center of the core rod through hole 23 provided in the present invention is disposed on the attaching edge 22, and the axis of the core rod through hole 23 is perpendicular to the measuring end surface 21.
One or more mandrel through holes 23, and when there are a plurality of mandrel through holes 23, the inner diameters of the plurality of mandrel through holes 23 are not equal; when the number of the mandrel through holes 23 is plural, the number of the measuring mandrels 1 corresponds to the number of the mandrel through holes 23. The arrangement of the plurality of core rod through holes ensures the universality of the device, and one set of device can measure the hole depth of the inclined holes to be measured with different inner diameters, so that the device is more convenient to use.
Referring to fig. 1, in order to enable the sliding gauge block 2 to be more firmly or stably not to be dislocated or move with the measuring core rod 1, the inclined hole depth gauge of the invention further comprises a jacking screw 3 arranged on the sliding gauge block 2; the jacking screw 3 extends into the core rod through hole 23 from the outside of the sliding gauge block 2 and jacks the measuring core rod 1 in the core rod through hole 23, and anti-skid grains are arranged on the outer surface of the jacking screw 3.
Referring to fig. 1, in order to read the hole depth more directly, the present invention provides a scale on the outer surface of the measuring core rod 1.
The technical scheme provided by the invention is explained in detail by taking the part containing the inclined hole to be detected as shown in fig. 4 as an example: selecting a measuring core rod with small fit clearance with a measured hole, putting the measuring core rod into the measured hole through a sliding gauge block, adjusting the angular position of the rotating sliding gauge block to be tightly attached to the surface of the measured hole, improving the accuracy of the intersection point of the hole and the measuring surface, screwing and fixing the adjusting and matched measuring core rod and the sliding gauge block by using a puller screw, and taking out the measuring tool to directly obtain the depth size of the hole.
In the aspect of inclined hole depth measurement, the depth measuring tool is applied to the remaining process of 100 more parts with more than 40 key models, and the inclined hole depth can be accurately measured. The operator can use the device simply and conveniently, and the accuracy rate of measurement reaches 100%. The parts measured by the depth measuring tool are assembled and debugged to be qualified, and the product performance requirements are completely met. Meanwhile, the measuring time of the parts is shortened, and the efficiency of numerical control machining is improved. In the aspect of manufacturing cost, the depth gauge is widely applied to a plurality of key models, so far, the depth measurement of the inclined hole at any angle can be met, a special depth gauge is not required to be designed, and after a part is measured by using the depth gauge, the preparation time of a measuring tool before the shell is machined is shortened, the measuring period of the part is also shortened, and the machining efficiency of the part is obviously improved. Meanwhile, the measurement consistency of the parts is reliable, the inspection time of the parts is obviously shortened, and scratches caused by the measurement of the parts are obviously reduced.
Taking the measurement of an inclined hole of a certain part as an example, three methods are respectively used for measurement and comparison, and the depth value of the hole can be accurately measured by adopting a measuring method, but because the hole diameter and the hole depth are different, the diameter of a measuring head and the length of the measuring head are difficult to select, one inclined hole needs to select a measuring head with proper diameter and length and is matched with a proper measuring core rod for measurement, the measuring period is long, the operation is complicated, the limitation is large, and the universality is poor; the caliper is adopted for measurement, because the measuring rod is easy to shake in the hole to generate a gap and the rod head of the measuring rod can not be completely in good contact with the end face of the inclined hole, the caliper is convenient for direct measurement, but the measurement error is larger; the special depth gauge can eliminate the fit clearance by selecting and matching the core rod, the end surface of the core rod is just in good contact with the end surface of the inclined hole, the defects of direct measurement by using the caliper are just eliminated by the two points, the hole measured by the universal depth measuring tool can accurately reflect the depth value, the measurement is convenient and simple, and the measurement accuracy and efficiency are obviously improved. Taking the phi 4 hole as an example, the depth dimensions of the phi 4 hole at all different angles of the part can be accurately measured only by designing a set of depth measuring tool matched with the phi 4 hole, and the operation is simple and convenient. The measuring tool is obviously improved in design and production cost and storage management of the measuring tool in the later period, the measuring tool is used for a plurality of parts in a production field, the part machining quality is stable all the time, and the production requirement is well met.
Claims (6)
1. An inclined hole depth measuring tool is characterized in that: the inclined hole depth measuring tool comprises a sliding measuring block (2) and a measuring core rod (1); a core rod through hole (23) is formed in the sliding gauge block (2); the outer diameter of the measuring core rod (1) is slightly smaller than the inner diameter of the core rod through hole (23); the measuring mandrel (1) can freely slide in the mandrel through hole (23); the end of the measuring core rod (1) is flush; the sliding gauge block (2) comprises a first sliding gauge block (25) and a second sliding gauge block (26) arranged together with the first sliding gauge block (25); the length of the first sliding gauge block (25) is greater than that of the second sliding gauge block (26); an interference gap (24) is formed between the first sliding gauge block (25) and the second sliding gauge block (26); the cross sections of the first sliding gauge block (25) and the second sliding gauge block (26) are L-shaped as a whole; the end surface of the part of the first sliding gauge block (25) which is longer than the second sliding gauge block (26) is a measuring end surface (21), and the bottom of the measuring end surface (21) is a joint edge (22); the core rod through hole (23) is arranged between the first sliding gauge block (25) and the second sliding gauge block (26) along the length direction of the first sliding gauge block (25); the hole center of the core rod through hole (23) is arranged on the attaching edge (22); the axis of the core rod through hole (23) is vertical to the measuring end surface (21).
2. The inclined hole depth measuring tool according to claim 1, wherein: the number of the mandrel through holes (23) is one or more, and when the number of the mandrel through holes (23) is plural, the inner diameters of the plurality of mandrel through holes (23) are not equal.
3. The inclined hole depth measuring tool according to claim 2, wherein: when the number of the mandrel through holes (23) is plural, the number of the measuring mandrels (1) corresponds to the number of the mandrel through holes (23).
4. A slanted hole depth gauge according to any of claims 1-3, wherein: the inclined hole depth measuring tool also comprises a jacking screw (3) arranged on the sliding measuring block (2); the jacking screw (3) extends into the core rod through hole (23) from the outside of the sliding gauge block (2) and jacks the measuring core rod (1) in the core rod through hole (23).
5. The slant hole depth gauge of claim 4, wherein: the outer surface of the tightening screw (3) is provided with anti-skid grains.
6. The slant hole depth gauge of claim 5, wherein: the outer surface of the measuring core rod (1) is provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368544.8A CN109458914B (en) | 2018-11-16 | 2018-11-16 | Inclined hole depth measuring tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368544.8A CN109458914B (en) | 2018-11-16 | 2018-11-16 | Inclined hole depth measuring tool |
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| Publication Number | Publication Date |
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| CN109458914A CN109458914A (en) | 2019-03-12 |
| CN109458914B true CN109458914B (en) | 2021-05-28 |
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| CN201811368544.8A Active CN109458914B (en) | 2018-11-16 | 2018-11-16 | Inclined hole depth measuring tool |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111637817B (en) * | 2020-06-24 | 2024-06-04 | 中信戴卡股份有限公司 | Wheel valve hole gauge |
| CN112146553B (en) * | 2020-09-24 | 2022-06-10 | 贵州凯星液力传动机械有限公司 | Design method and use method of inner inclined hole position size measuring device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3911587A (en) * | 1973-12-28 | 1975-10-14 | John Orchover Forrest | Jag system for marking dental instruments for depth penetration |
| US5382120A (en) * | 1993-12-27 | 1995-01-17 | Parsons; Richard E. | Drill bit depth minder |
| CN101235847B (en) * | 2008-02-20 | 2010-04-21 | 宁波恒力汽配轴承有限公司 | Straight-line rolling slipper block and method of manufacture |
| CN202522179U (en) * | 2011-11-21 | 2012-11-07 | 青岛华瑞汽车零部件有限公司 | Depth indicator for measuring depth of blind hole |
| CN106931858A (en) * | 2015-12-29 | 2017-07-07 | 天津宝涞精工集团股份有限公司 | 30 degree of inclined hole special inspecting equipments of lid on a kind of gear pump |
| CN205448944U (en) * | 2016-03-24 | 2016-08-10 | 江门格威精密机械有限公司 | Utensil is examined in synthesis of measuring aperture precision |
| CN107401962A (en) * | 2017-08-17 | 2017-11-28 | 沈阳富创精密设备有限公司 | A kind of depth of thread rule of replaceable gauge head and application method |
| CN108507446B (en) * | 2018-02-10 | 2019-11-12 | 安徽睿知信信息科技有限公司 | A kind of measurement is with falling again |
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