CN202814301U - A tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform - Google Patents
A tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform Download PDFInfo
- Publication number
- CN202814301U CN202814301U CN 201220361587 CN201220361587U CN202814301U CN 202814301 U CN202814301 U CN 202814301U CN 201220361587 CN201220361587 CN 201220361587 CN 201220361587 U CN201220361587 U CN 201220361587U CN 202814301 U CN202814301 U CN 202814301U
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- emd
- survey instrument
- tool
- depth
- reference platform
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform. The diameters of the two ends of the measuring tool are greater than the diameter of the middle part of the measuring tool; the thickness of one end of the measuring tool is greater than the width of an EMD piston inner cavity snap spring groove; and the joint between the end and the middle part is conical in shape. The tool has the following effects: the shape of the tool is matched with the structural shape of a piston inner cavity, piston dimension measuring efficiency is improved effectively, measuring reliability and product quality are guaranteed, rapid flow of batch production processes is guaranteed, the whole piston production and detection process is optimized, and enterprises can thus win greater economic benefit.
Description
Technical field
The utility model relates to a kind of EMD piston cavity jump-ring slot to the survey instrument of the reference platform degree of depth.
Background technology
One of unique point of EMD series of locomotives piston is that piston itself does not have pin-and-hole, but then inner chamber assembling supporting body is connected transferring power by supporting body with piston pin, connecting rod.Piston and supporting body fit dimension have three, and one of them is exactly that interior jump-ring slot is to the degree of depth of reference platform.But because this size is at piston cavity, and be that notch is to the distance of platform, so measure very inconvenient.Examine eventually for process and product and bring a lot of difficulties, also make product quality can not get ensureing well.
Although the tolerance of this size reaches 0.2mm, because it has matching relationship with supporting body, so also be very important size.Current this size measurement generally all be to adopt three-dimensional to detect waste time and energy because three-dimensional detects, although accurately, practicality is not strong, additionally takies a large amount of detection times, greatly reduces production efficiency.The limitation that detects in view of three-dimensional makes the product can not 100% full inspection, and EMD piston product inspection method is that the first inspection of production run adds the finished product sampling observation at present, and this also causes product quality to fail to be guaranteed well.
The utility model content
Technical problem to be solved in the utility model provides a kind of EMD piston cavity jump-ring slot to the survey instrument of the reference platform degree of depth, improves detection efficiency, guarantees reliability and the accuracy measured.
In order to solve the problems of the technologies described above, technical scheme provided by the utility model is: a kind of EMD piston cavity jump-ring slot is to the survey instrument of the reference platform degree of depth, the diameter at described survey instrument two ends is greater than the diameter at middle part, and wherein the thickness of an end is less than the width of EMD piston cavity jump-ring slot, and should end tapered with the junction at middle part.
Described survey instrument adopts the GCr15 steel to make, and heat-treats by the modified deep cooling technique that adds.
The depth of parallelism that the both ends of the surface of described survey instrument make both ends of the surface by grinding is less than 0.01, and the surfaceness of both ends of the surface is Ra0.8.
Be equipped with fabrication hole on the both ends of the surface of described survey instrument.
Rounding off or chamfering C0.5 are all adopted in the position, corner at described survey instrument two ends.
After having adopted technique scheme, the utlity model has following beneficial effect: the diameter at (1) two ends of the present utility model is greater than the diameter at middle part, the fine identical piston cavity planform of this structure energy, the Effective Raise piston size is measured efficient, guarantee reliability and the product quality of measurement, guarantee the quick circulation of batch production process, optimize whole piston production and testing process, for enterprise creates larger economic benefit.
(2) thickness of survey instrument of the present utility model is tapered less than an end and the junction in the middle part of the survey instrument of the width of EMD piston cavity jump-ring slot, and this structure can guarantee intensity and the manufacturability of survey instrument.
(3) survey instrument of the present utility model adopts the GCr15 steel to make, the performances such as the quenching stability of this steel and quenching hardness all relatively are fit to do accurate measurer, by modified add deep cooling technique and heat-treat after, can guarantee that hardness can guarantee again the stability of size.
(4) be equipped with fabrication hole on the both ends of the surface of survey instrument of the present utility model, this structure can conveniently be carried out grinding to end face and be processed.
(5) rounding off or chamfering C0.5 are all adopted in the position, corner at survey instrument of the present utility model two ends, and this structure can prevent the survey instrument hardening crack.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is instrumentation plan of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Label in the accompanying drawing is:
Embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, the EMD piston cavity jump-ring slot of present embodiment adopts the GCr15 steel to make to the survey instrument 1 of the reference platform degree of depth, and heat-treats by the modified deep cooling technique that adds.The diameter at its two ends is greater than the diameter at middle part, and wherein the thickness of an end less than the width of EMD piston cavity jump-ring slot, and should end tapered with the junction at middle part.The depth of parallelism that the both ends of the surface of survey instrument 1 make both ends of the surface by grinding is less than 0.01, and the surfaceness of both ends of the surface is Ra0.8.Be equipped with fabrication hole on the both ends of the surface of survey instrument 1.Rounding off or chamfering C0.5 are all adopted in the position, corner at survey instrument 1 two ends.EMD piston cavity jump-ring slot to the measuring method of the reference platform degree of depth is: according to stop-pass rule principle, adopt survey instrument 1 to return as logical, and adopt this survey instrument 1 to cooperate as no-go gage with the clearance gauge 2 of respective thickness, EMD piston cavity jump-ring slot is measured to the reference platform degree of depth less than an end of the width of EMD piston cavity jump-ring slot with survey instrument 1 thickness.Because EMD piston cavity jump-ring slot reaches 0.2mm to the tolerance of reference platform depth dimensions, so the thickness of clearance gauge 2 may be selected to be 0.15mm.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. an EMD piston cavity jump-ring slot is to the survey instrument of the reference platform degree of depth, it is characterized in that: the diameter at described survey instrument (1) two ends is greater than the diameter at middle part, and wherein the thickness of an end is less than the width of EMD piston cavity jump-ring slot, and should end tapered with the junction at middle part.
2. a kind of EMD piston cavity jump-ring slot according to claim 1 is characterized in that to the survey instrument of the reference platform degree of depth: described survey instrument (1) adopts the GCr15 steel to make, and heat-treats by the modified deep cooling technique that adds.
3. a kind of EMD piston cavity jump-ring slot according to claim 1 is to the survey instrument of the reference platform degree of depth, it is characterized in that: the depth of parallelism that the both ends of the surface of described survey instrument (1) make both ends of the surface by grinding is less than 0.01, and the surfaceness of both ends of the surface is Ra0.8.
4. a kind of EMD piston cavity jump-ring slot according to claim 3 is characterized in that: be equipped with fabrication hole on the both ends of the surface of described survey instrument (1) to the survey instrument of the reference platform degree of depth.
5. a kind of EMD piston cavity jump-ring slot according to claim 1 is characterized in that to the survey instrument of the reference platform degree of depth: rounding off or chamfering C0.5 are all adopted in the position, corner at described survey instrument (1) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361587 CN202814301U (en) | 2012-07-25 | 2012-07-25 | A tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361587 CN202814301U (en) | 2012-07-25 | 2012-07-25 | A tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202814301U true CN202814301U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361587 Expired - Fee Related CN202814301U (en) | 2012-07-25 | 2012-07-25 | A tool for measuring depth from an EMD piston inner cavity snap spring groove to a reference platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202814301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406561A (en) * | 2014-12-01 | 2015-03-11 | 宁波圣龙汽车动力系统股份有限公司 | Detection device for depth of workpiece sealing groove |
-
2012
- 2012-07-25 CN CN 201220361587 patent/CN202814301U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406561A (en) * | 2014-12-01 | 2015-03-11 | 宁波圣龙汽车动力系统股份有限公司 | Detection device for depth of workpiece sealing groove |
| CN104406561B (en) * | 2014-12-01 | 2017-03-01 | 宁波圣龙汽车动力系统股份有限公司 | The detection means of Work piece sealing groove deep |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20170725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |