CN203401389U - Grinding rods for stepped holes - Google Patents
Grinding rods for stepped holes Download PDFInfo
- Publication number
- CN203401389U CN203401389U CN201320340854.5U CN201320340854U CN203401389U CN 203401389 U CN203401389 U CN 203401389U CN 201320340854 U CN201320340854 U CN 201320340854U CN 203401389 U CN203401389 U CN 203401389U
- Authority
- CN
- China
- Prior art keywords
- abrasion
- grinding
- grinding rod
- hole
- stop portion
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses grinding rods for stepped holes, which comprises four grinding rods with the grinding parts thereof to be reduced successively. Each grinding rod is provided with a hand-held part, a grinding part and a spacing part. The periphery of each grinding part is provided with a chip-hold groove. The length of a to-be-ground hole is set to be L1, and the inner diameter of the to-be-ground hole is set to be d1. The dimension of a profile at the step intersected parts of two holes is set to be R1. The length of each grinding part is set to be L, and the outer diameter of the grinding part is set to be d. The dimension of a profile at the intersected parts of each grinding part with the corresponding spacing part is set to be R. Then the length L of each grinding part satisfies the formula: L= L1 + 2 mm. The dimension R of the profile at the intersected parts of each grinding part with the corresponding spacing part satisfies the formula: R = (R1 - 0.03) - 0.01 mm. The outer diameters d of the grinding parts of the four grinding rods are successively described as follows: (d1 - 0.04) - 0.01 mm, (d1 - 0.03) - 0.01 mm, (d1 - 0.02) - 0.01 mm, and (d1 - 0.01) - 0.01 mm. According to the technical scheme of the utility model, the requirements on the dimension accuracy and the coaxiality of a high-precision and small-size stepped hole can be satisfied. Therefore, the machining accuracy of the stepped hole with a profile can be ensured.
Description
Technical field
The utility model relates to a kind of for processing the fine finishining aid of small size band profile shoulder hole.
Background technology
In modern manufacturing industry, difficult processing structure is more and more, and required precision is more and more higher, especially in Aeronautics and Astronautics, weapons and auto manufacturing, shows particularly outstandingly.Higher such as the accuracy of manufacture on the materials such as carbide alloy, high-speed steel, the diameter of shoulder hole is at 10mm with the less shoulder hole of interior size, and the required precision of each endoporus is up to 0.02mm, and has axiality requirement, is all the difficult point of manufacturing in processing all the time.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of for the accurately machined ladder grinding rod of shoulder hole.
For achieving the above object, the technical solution adopted in the utility model is:
Ladder grinding rod, comprise the grinding rod that 4 kinds of means of abrasion sizes reduce successively, each grinding rod comprises portion of the handle, means of abrasion and stop portion, portion of the handle, means of abrasion and stop portion are all cylindrical, means of abrasion one end connects portion of the handle, the other end connects stop portion, in the periphery of means of abrasion, is provided with chip pocket;
If the length in hole to be ground is L
1, internal diameter is d
1, the internal diameter that the diameter adjacent with hole to be ground is less than the hole in hole to be ground is d
2, the molding surface size of the ladder intersection in above-mentioned two holes is R
1; If the length of the means of abrasion of grinding rod is L, the external diameter of means of abrasion is d, and the molding surface size of means of abrasion and stop portion intersection is R, and the external diameter of stop portion is d
3;
The length of means of abrasion is L=L
1+ 2 mm;
The molding surface size R=(R of means of abrasion
1-0.03)
-0.01mm;
The outside diameter d of the means of abrasion of 4 kinds of described grinding rods is followed successively by selects d
a, d
b, d
cand d
d, d
a=(d
1-0.04)
-0.01mm, d
b=(d
1-0.03)
-0.01mm, d
c=(d
1-0.02)
-0.01mm, d
d=(d
1-0.01)
-0.01mm;
The outside diameter d of stop portion
3=(d
2-0.08) ± 0.03 mm;
Above-mentioned ladder grinding rod, the L from the intersection of stop portion and means of abrasion
1dimension line is carved with in the means of abrasion position at-0.06 mm place.
Above-mentioned ladder grinding rod, the material of described ladder grinding rod is grey iron.
The beneficial effects of the utility model: ladder grinding rod of the present utility model has been realized the requirements such as high accuracy small size shoulder hole dimensional accuracy and axiality, has guaranteed the machining accuracy with profile shoulder hole.
The material of ladder grinding rod is selected grey iron, the material hardness that guarantees ladder grinding rod is softer than machined material, can guarantee so better to grind workpiece surplus when work, and do not damage grinding rod itself, grey iron has good wearability and structural homogenity simultaneously, has guaranteed the degree of accuracy of ladder grinding rod; In order well to control hole depth, taked to be carved with dimension line on shoulder hole grinding rod, there is this line, workman observes at any time when operation, has effectively avoided workman to lean on experience, with vision processing, produce overproof problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of shoulder hole.
Fig. 2 is the structural representation of ladder grinding rod.
The specific embodiment
As shown in Figure 2, ladder grinding rod, the grinding rod being reduced successively by four kinds of means of abrasion 2 sizes forms, 4 species stage grinding rods are used in groups, each grinding rod comprises portion of the handle 1, means of abrasion 2 and stop portion 3, and portion of the handle 1, means of abrasion 2 and stop portion 3 are all cylindrical, and means of abrasion 2 one end connect portion of the handle 1, the other end connects stop portion 3, in the periphery of means of abrasion, is provided with n chip pocket 5;
If Fig. 1 is shoulder hole to be processed, if the length in hole to be ground is L
1=10mm, internal diameter is d
1=Φ 5.3
mm, the internal diameter that the diameter adjacent with hole to be ground is less than the hole in hole to be ground is d
2=Φ 3.2
mm, the molding surface size of the ladder intersection in above-mentioned two holes is R
1=1
mm; If the length of the means of abrasion of grinding rod 2 is L, the external diameter of means of abrasion 2 is d, and the molding surface size of means of abrasion 2 and stop portion 3 intersections is R, and the external diameter of stop portion 3 is d
3;
The length of means of abrasion 2 is L=L
1+ 2 mm=12 mm;
The molding surface size R=(R of means of abrasion 2
1-0.03)
-0.01mm=0.97
mm;
The outside diameter d of the means of abrasion 2 of 4 kinds of described grinding rods is followed successively by selects d
a, d
b, d
cand d
d, d
a=(d
1-0.04)
-0.01mm=Φ 5.26
mm, d
b=(d
1-0.03)
-0.01mm=Φ 5.27
mm, d
c=(d
1-0.02)
-0.01mm=Φ 5.28
mm, d
d=(d
1-0.01)
-0.01mm=5.29
mm;
The outside diameter d of stop portion 3
3=(d
2-0.08) ± 0.03mm=Φ 3.12 ± 0.03mm;
Above-mentioned ladder grinding rod, dimension line 4 is carved with in means of abrasion 2 positions of 9.94 mm from the intersection of stop portion 3 and means of abrasion 2.
The material of above-mentioned ladder grinding rod should be ground and need to be selected wearability good, and the grey iron that quality is softer, as HT25-47.
The using method of ladder grinding rod: during use, ladder grinding rod clamping rotates with main shaft on grinder, the hand-held part of workman is realized the grinding of shoulder hole by upper and lower rectilinear motion, grinding rod is shaped with chip pocket 5, facilitate chip removal, during use, first use the grinding rod of means of abrasion outside dimension minimum, by outside dimension increase, change successively, and then realize the fine finishining of shoulder hole.
Claims (3)
1. shoulder hole grinding rod, it is characterized in that: comprise the grinding rod that 4 kinds of means of abrasion (2) outside dimension reduces successively, each grinding rod comprises portion of the handle (1), means of abrasion (2) and stop portion (3), portion of the handle (1), means of abrasion (2) and stop portion (3) are all cylindrical, means of abrasion (2) one end connects portion of the handle (1), the other end connects stop portion (3), in the periphery of means of abrasion (2), is provided with chip pocket (5);
If the length in hole to be ground is L
1, internal diameter is d
1, the internal diameter that the diameter adjacent with hole to be ground is less than the hole in hole to be ground is d
2, the molding surface size of the ladder intersection in above-mentioned two holes is R
1; If the length of the means of abrasion of grinding rod (2) is L, the external diameter of means of abrasion (2) is d, and the molding surface size of means of abrasion (2) and stop portion (3) intersection is R, and the external diameter of stop portion (3) is d
3;
The length of means of abrasion (2) is L=L
1+ 2 mm;
The molding surface size R=(R of means of abrasion (2)
1-0.03)
-0.01mm;
The outside diameter d of the means of abrasion (2) of 4 described grinding rods is followed successively by selects d
a, d
b, d
cand d
d, d
a=(d
1-0.04)
-0.01mm, d
b=(d
1-0.03)
-0.01mm, d
c=(d
1-0.02)
-0.01mm, d
d=(d
1-0.01)
-0.01mm;
The outside diameter d of stop portion (3)
3=(d
2-0.08) ± 0.03mm.
2. shoulder hole grinding rod as claimed in claim 1, is characterized in that: the L from the intersection of stop portion (3) and means of abrasion (2)
1dimension line (4) is carved with in the means of abrasion at-0.06 mm place (2) position.
3. shoulder hole grinding rod as claimed in claim 1 or 2, is characterized in that: the material of described shoulder hole grinding rod is grey iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320340854.5U CN203401389U (en) | 2013-06-14 | 2013-06-14 | Grinding rods for stepped holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320340854.5U CN203401389U (en) | 2013-06-14 | 2013-06-14 | Grinding rods for stepped holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203401389U true CN203401389U (en) | 2014-01-22 |
Family
ID=49937332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320340854.5U Expired - Fee Related CN203401389U (en) | 2013-06-14 | 2013-06-14 | Grinding rods for stepped holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203401389U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364700A (en) * | 2015-12-01 | 2016-03-02 | 中国科学院上海技术物理研究所 | Ceramic blind hole grinding mandrel for precisely grinding blind hole |
| CN106881634A (en) * | 2015-12-10 | 2017-06-23 | 贵州红林机械有限公司 | A kind of processing method of steel part bushing stepped hole axiality |
| CN107243847A (en) * | 2017-07-20 | 2017-10-13 | 江苏苏北砂轮厂有限公司 | A kind of cylindrical mounted point of trough of belt |
-
2013
- 2013-06-14 CN CN201320340854.5U patent/CN203401389U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364700A (en) * | 2015-12-01 | 2016-03-02 | 中国科学院上海技术物理研究所 | Ceramic blind hole grinding mandrel for precisely grinding blind hole |
| CN106881634A (en) * | 2015-12-10 | 2017-06-23 | 贵州红林机械有限公司 | A kind of processing method of steel part bushing stepped hole axiality |
| CN107243847A (en) * | 2017-07-20 | 2017-10-13 | 江苏苏北砂轮厂有限公司 | A kind of cylindrical mounted point of trough of belt |
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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: 20140122 Termination date: 20160614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |