CN111947551A - Integral full-shape core rod - Google Patents
Integral full-shape core rod Download PDFInfo
- Publication number
- CN111947551A CN111947551A CN202010760244.5A CN202010760244A CN111947551A CN 111947551 A CN111947551 A CN 111947551A CN 202010760244 A CN202010760244 A CN 202010760244A CN 111947551 A CN111947551 A CN 111947551A
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- CN
- China
- Prior art keywords
- shaft
- central shaft
- core rod
- full
- holes
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an integral full-shape core rod, and belongs to the technical field of measuring tool structural design. The full-shape core rod comprises a forward extending shaft, a central shaft and a backward extending shaft; the central shaft is of a circular sleeve-shaped structure, step holes are expanded at two ends of an inner hole of the central shaft, the shapes of the front extending shaft and the rear extending shaft are of step-shaped cylindrical structures, the large end of each step-shaped cylindrical structure is matched with the step hole of the central shaft, and a tip hole is machined in the end face of the small end of each step-shaped cylindrical structure; the large ends of the front extension shaft and the rear extension shaft are respectively arranged in step holes at two ends of the central shaft and then are welded with the central shaft into a whole, a welding part is clamped on processing equipment through tip holes of the front extension shaft and the rear extension shaft, and the processing equipment processes and forms the excircle of the central shaft at one time. The invention simplifies the processing technology of the measuring tool and reduces the manufacturing cost of the measuring tool on the premise of ensuring the processing precision requirement of the measuring tool.
Description
Technical Field
The invention relates to a measuring tool for detecting a long hole, in particular to an integral full-shape core rod, and belongs to the technical field of structural design of measuring tools.
Background
The measuring tool (full-shape core rod) for detecting the straightness of the inner cavity of the long cylindrical part is integrally machined and formed, the total length of the working surface of the full-shape core rod is 1000mm, the diameter phi 72 is 72, the requirement on the straightness of the inner cavity of the long cylindrical part is high, the corresponding requirements on the straightness and the form and position tolerance of the full-shape core rod are also high, the requirements on the form and position tolerances such as the straightness are not easy to achieve by adopting a conventional machining process, and the manufacturing cost of the measuring tool is increased by adopting high-end equipment for machining.
Disclosure of Invention
In view of this, the invention provides an integral full-shape core rod, which simplifies the processing technology of the measuring tool and reduces the manufacturing cost of the measuring tool on the premise of ensuring the processing precision requirement of the measuring tool.
An integral full-shape mandrel comprises a forward extending shaft, a central shaft and a backward extending shaft; the central shaft is of a circular sleeve-shaped structure, step holes are expanded at two ends of an inner hole of the central shaft, the front extension shaft and the rear extension shaft are of step-shaped cylindrical structures, the large end of each step-shaped cylindrical structure is matched with the step hole of the central shaft, and a tip hole is machined in the end face of the small end of each step-shaped cylindrical structure; the large ends of the front extension shaft and the rear extension shaft are respectively arranged in step holes at two ends of the central shaft and then are welded with the central shaft into a whole, a welding part is clamped on processing equipment through tip holes of the front extension shaft and the rear extension shaft, and the processing equipment processes and forms the excircle of the central shaft at one time.
Furthermore, in order to reduce the weight of the full-shape core rod, lightening holes are designed on the front extension shaft and the rear extension shaft.
Has the advantages that:
the integral measuring tool is changed into a split embedded welding connection structure, the processing difficulty of slender parts is effectively reduced, the requirements on shape and position errors such as straightness can be guaranteed, the appearance processing can be completed by one-time clamping, the precision requirement of the measuring tool is guaranteed, the requirement on processing equipment is not high, and therefore the processing is simple and the manufacturing cost is low.
Drawings
FIG. 1 is a schematic structural view of an integral full shape mandrel of the present invention.
Wherein, 1-a front extension shaft, 2-a central shaft and 3-a rear extension shaft.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in fig. 1, the invention provides an integral full-shape mandrel, which comprises a front extension shaft 1, a central shaft 2 and a rear extension shaft 3; the central shaft 2 is of a circular sleeve-shaped structure, step holes are expanded at two ends of an inner hole of the central shaft 2, the front extension shaft 1 and the rear extension shaft 3 are of step-shaped cylindrical structures, the large end of each step-shaped cylindrical structure is matched with the step hole of the central shaft 2, and a tip hole is machined in the end face of the small end of each step-shaped cylindrical structure; the big ends of the front extension shaft 1 and the rear extension shaft 3 are respectively arranged in step holes at two ends of the central shaft 2 and then are welded with the central shaft 2 into a whole, a welding part is clamped on processing equipment through tip holes of the front extension shaft and the rear extension shaft, and the processing equipment processes and forms the excircle of the central shaft 2 at one time.
In order to reduce the weight of the full-shape core rod, lightening holes are designed on the front stretching shaft 1 and the rear stretching shaft 3, and two ends of each lightening hole are of bell mouth structures.
The procedure for use and inspection of the full core rod is as follows: the whole full-shape core rod is plugged into an inner cavity of the long cylindrical part to be detected, the straightness of the long cylindrical part is detected by using the outer circumferential surface of the central shaft 2, if the full-shape core rod can smoothly pass through the long cylindrical part, the straightness of the inner hole of the long cylindrical part meets the requirement of form and position errors, and if the full-shape core rod is blocked in the moving process, the straightness of the blocked part is unqualified.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. An integral full-shape core rod is characterized in that the full-shape core rod comprises a forward extending shaft, a central shaft and a backward extending shaft; the central shaft is of a circular sleeve-shaped structure, step holes are expanded at two ends of an inner hole of the central shaft, the front extension shaft and the rear extension shaft are of step-shaped cylindrical structures, the large end of each step-shaped cylindrical structure is matched with the step hole of the central shaft, and a tip hole is machined in the end face of the small end of each step-shaped cylindrical structure; the large ends of the front extension shaft and the rear extension shaft are respectively arranged in step holes at two ends of the central shaft and then are welded with the central shaft into a whole, a welding part is clamped on processing equipment through tip holes of the front extension shaft and the rear extension shaft, and the processing equipment processes and forms the excircle of the central shaft at one time.
2. The unitary full shape mandrel of claim 1 wherein said forward and rearward extensions are each formed with lightening holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760244.5A CN111947551A (en) | 2020-07-31 | 2020-07-31 | Integral full-shape core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760244.5A CN111947551A (en) | 2020-07-31 | 2020-07-31 | Integral full-shape core rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111947551A true CN111947551A (en) | 2020-11-17 |
Family
ID=73339029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010760244.5A Pending CN111947551A (en) | 2020-07-31 | 2020-07-31 | Integral full-shape core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111947551A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202240504U (en) * | 2011-09-16 | 2012-05-30 | 铜陵市三圆特种铸造有限责任公司 | Positioning tool for processing of mandril on screw pump |
| CN105729300A (en) * | 2014-12-09 | 2016-07-06 | 安徽池州家用机床股份有限公司 | Clamp for cylindrical grinding of hollow shaft |
| CN207508709U (en) * | 2017-11-24 | 2018-06-19 | 中科步思德（洛阳）智控科技有限公司 | A kind of automatic punching stick |
| CN210817234U (en) * | 2019-08-26 | 2020-06-23 | 中冶陕压重工设备有限公司 | Auxiliary combined core rod for forging step inner hole cylinder type forge piece |
-
2020
- 2020-07-31 CN CN202010760244.5A patent/CN111947551A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202240504U (en) * | 2011-09-16 | 2012-05-30 | 铜陵市三圆特种铸造有限责任公司 | Positioning tool for processing of mandril on screw pump |
| CN105729300A (en) * | 2014-12-09 | 2016-07-06 | 安徽池州家用机床股份有限公司 | Clamp for cylindrical grinding of hollow shaft |
| CN207508709U (en) * | 2017-11-24 | 2018-06-19 | 中科步思德（洛阳）智控科技有限公司 | A kind of automatic punching stick |
| CN210817234U (en) * | 2019-08-26 | 2020-06-23 | 中冶陕压重工设备有限公司 | Auxiliary combined core rod for forging step inner hole cylinder type forge piece |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201117 |