CN203317216U - Pitch circle fixture for grinding inner holes - Google Patents
Pitch circle fixture for grinding inner holes Download PDFInfo
- Publication number
- CN203317216U CN203317216U CN2013204129474U CN201320412947U CN203317216U CN 203317216 U CN203317216 U CN 203317216U CN 2013204129474 U CN2013204129474 U CN 2013204129474U CN 201320412947 U CN201320412947 U CN 201320412947U CN 203317216 U CN203317216 U CN 203317216U
- Authority
- CN
- China
- Prior art keywords
- push rod
- mandril
- radial ball
- row radial
- ball bearings
- 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
Links
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 3
- 241000227287 Elliottia pyroliflora Species 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 210000003128 head Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 210000003454 tympanic membrane Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Images
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a pitch circle fixture for grinding inner holes. The pitch circle fixture for grinding the inner holes comprises a fixture body and a mandril, single-row radial ball bearings are arranged between the fixture body and the mandril, and the mandril is in rotation fit with the fixture body through the single-row radial ball bearings. The single-row radial ball bearings are used for replacing a copper bush and a bush in the prior art, original dry friction between the fixture body and the mandril is made to be changed into rolling friction, and abrasion of the copper bush and the mandril is greatly reduced. Therefore, the service life of the mandril can be effectively prolonged, and the maintenance cost of the pitch circle fixture is lowered. In addition, due to the fact that the single-row radial ball bearings are adopted, the advantages of being small in bearing friction loss, high in limiting speed, simple in structure, easy to mount and maintain and the like are achieved compared with other ball bearings. The mandril and inner rings of the single-row radial ball bearings are in clearance fit so that the mandril can move in the axial direction relative to the inner rings of the single-row radial ball bearings, and thus the purpose of clamping and loosening workpieces can be achieved by the way that the mandril ejects and moves a membrane.
Description
Technical field
The utility model relates to a kind of machinery processing apparatus, particularly a kind of pitch-line chuck for roll flute wheel endoporus and end face.
Background technology
The pitch-line chuck of using during roll flute wheel endoporus, as shown in Figure 1, it comprises push rod 1, with the clamp body 2 of the concentric setting of push rod 1 be arranged on the diaphragm 3 on clamp body 2, evenly be provided with centering clamp jaw 4 on described diaphragm 3, axial direction motion by push rod makes diaphragm deformation, thereby completes the clamping of part and loosen.The pitch-line chuck that existing roll flute wheel endoporus is used, between its clamp body and push rod by copper sheathing 7 being set and lining 8 completes being rotatably assorted between push rod and clamp body, yet, because copper sheathing 7 is unique strong points of push rod 1, when clamp body 2 rotation, push rod 1 keeps static, and the supporting copper sheathing rotates with chuck, produce sliding friction between supporting copper sheathing and push rod, cause push rod and supporting copper sheathing to wear and tear simultaneously.After push rod and supporting copper sheathing wearing and tearing, push rod can send sharp-pointed noise during along its axially-movable, the replacing frequency of existing push rod and supporting copper sheathing be February/time.Due to high material consumption and the difficult processing of push rod, supporting copper sheathing material expends height, causes the use cost of existing pitch-line chuck higher, to enterprise, causes larger financial burden.
The formerly patent that the applicant's application number is 201220323213.4 discloses a kind of pitch-line chuck, this pitch-line chuck, comprise push rod, connect dish (clamp body), be arranged on the eardrum plate (diaphragm) and the chuck (centering clamp jaw) that connect on dish, it is characterized in that: described push rod head extends through and is arranged on lathe bed and connects the through hole of disk center and be oppositely arranged with eardrum plate one side, and described push rod and lathe bed or connect between dish and be provided with spring bearing, matched in clearance between described push rod and spring bearing inner ring.The applicant finds by practice, spring bearing is arranged between push rod and lathe bed, owing to connecing dish, by screw, be positioned on lathe bed, the screw tightness that connects the dish surrounding has a strong impact on the registration in Yu Jiepan axle center, push rod axle center, and then has influence on the accuracy after pitch-line chuck clamping gear.
For above-mentioned deficiency, the applicant improves the pitch-line chuck in patent formerly, pitch-line chuck after improvement is in the wearing and tearing that can effectively alleviate parts, when improving the service life of pitch-line chuck, greatly improve the precision of pitch-line chuck, and reduced the production cost of pitch-line chuck.
The utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of mill endoporus pitch-line chuck, this pitch-line chuck is in the wearing and tearing that can effectively alleviate parts, when improving the service life of pitch-line chuck, greatly improved in the precision of pitch-line chuck, and reduced the production cost of pitch-line chuck.In addition, mill endoporus pitch-line chuck of the present utility model also is further improved spring bearing, with the service life of raising bearing and the job stability of push rod.
Mill endoporus pitch-line chuck of the present utility model, comprise push rod, with the clamp body of the concentric setting of push rod be arranged on the diaphragm on clamp body, evenly be provided with the centering clamp jaw on described diaphragm, the center of described clamp body is provided with axis hole, the head of described push rod passes and is oppositely arranged with the side of diaphragm from axis hole, be provided with single-row radial ball bearing between described clamp body and push rod, described push rod is by being rotatably assorted between single-row radial ball bearing and clamp body.
Further, be set side by side with two groups of single-row radial ball bearings between described clamp body and push rod.
Further, adopt matched in clearance between described push rod and single-row radial ball bearing inner ring.
Further, also comprise the push rod cap mounted cover at described push rod head.
The utlity model has following beneficial effect:
1) mill endoporus pitch-line chuck of the present utility model, be provided with single-row radial ball bearing between its clamp body and push rod, and described push rod is by being rotatably assorted between single-row radial ball bearing and clamp body.Replace copper sheathing of the prior art and lining with single-row radial ball bearing, use between clamp body and push rod and become rolling friction by original dry friction, greatly reduce the wearing and tearing of copper sheathing and push rod, can effectively improve the service life of push rod, and reduced the maintenance cost of pitch-line chuck.Due to single-row radial ball bearing is arranged between clamp body and push rod, make the central shaft of push rod can accurately overlap with the central shaft of clamp body, and then the accuracy while having improved fixture clamping gear.
2) adopting single-row radial ball bearing to compare other ball bearings, to have a bearing friction loss little, and limit speed is high, simple in structure, and the installation, maintenance ratio such as is easier at the advantage.
3) adopt two groups of single-row radial ball bearings that are set up in parallel, can further improve the quality of fit between push rod and clamp body, and the stability can guarantee that push rod is relative with clamp body and rotate the time.
4) adopt matched in clearance between described push rod and single-row radial ball bearing inner ring.Make push rod to move on its axial direction with respect to the single-row radial ball bearing inner ring, so, just can realize that push rod pushes diaphragm and realizes the purpose that clamps and unclamp workpiece.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
The structural representation that Fig. 1 is mill endoporus pitch-line chuck in prior art;
The structural representation that Fig. 2 is the utility model mill endoporus pitch-line chuck.
The specific embodiment
Below with reference to drawings and Examples, the utility model is elaborated:
As shown in Figure 2, mill endoporus pitch-line chuck of the present utility model, comprise push rod 1, with the clamp body 2 of the concentric setting of push rod 1 be arranged on the diaphragm 3 on clamp body 2, evenly be provided with centering clamp jaw 4 on described diaphragm 3, the center of described clamp body 2 is provided with axis hole 5, the head of described push rod 1 passes and is oppositely arranged with the side of diaphragm 3 from axis hole 5, be provided with single-row radial ball bearing 5 between described clamp body 2 and push rod 1, described push rod is by being rotatably assorted between single-row radial ball bearing 5 and clamp body.In the present embodiment, described clamp body 2 can be fixedly connected with lathe bed by screw, and during work, clamp body 2 is with the lathe bed rotation, and push rod 1 is relatively static.Owing to adopting single-row radial ball bearing to replace copper sheathing of the prior art and lining between push rod 1 and clamp body 2, use between clamp body and push rod and become rolling friction by original dry friction, the wearing and tearing of copper sheathing and push rod have greatly been reduced, can effectively improve the service life of push rod, and reduce the maintenance cost of pitch-line chuck.Due to single-row radial ball bearing is arranged between clamp body and push rod, make the central shaft of push rod can accurately to overlap with the central shaft of clamp body, and then the accuracy while having improved fixture to the clamping gear.In addition, adopting single-row radial ball bearing to compare other ball bearings, to have a bearing friction loss little, and limit speed is high, simple in structure, and the installation, maintenance ratio such as is easier at the advantage.
As the further improvement of such scheme, be set side by side with two groups of single-row radial ball bearings 5 between described clamp body 2 and push rod 1.Be set up in parallel two groups of single-row radial ball bearings 5 between clamp body 2 and push rod 1, strengthened the support strength between push rod 1 and clamp body 2, and further improved the concentricity of push rod and clamp body 2, make the clamping accuracy of gear higher.
As the further improvement of such scheme, also comprise the push rod cap 6 mounted cover at described push rod 1 head.Can prevent the wearing and tearing between push rod head and diaphragm 3.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. one kind is ground the endoporus pitch-line chuck, comprise push rod (1), with the clamp body (2) of the concentric setting of push rod (1) be arranged on the diaphragm (3) on clamp body (2), evenly be provided with centering clamp jaw (4) on described diaphragm (3), the center of described clamp body (2) is provided with axis hole (5), the head of described push rod (1) passes and is oppositely arranged with the side of diaphragm (3) from axis hole (5), it is characterized in that: between described clamp body (2) and push rod (1), be provided with single-row radial ball bearing (5), described push rod is by being rotatably assorted between single-row radial ball bearing (5) and clamp body.
2. according to the mill endoporus pitch-line chuck described in claim 1, it is characterized in that: between described clamp body (2) and push rod (1), be set side by side with two groups of single-row radial ball bearings (5).
3. according to the mill endoporus pitch-line chuck described in claim 2, it is characterized in that: between described push rod (1) and single-row radial ball bearing (5) inner ring, adopt matched in clearance.
4. mill endoporus pitch-line chuck according to claim 3, is characterized in that: also comprise the push rod cap (6) mounted cover at described push rod (1) head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204129474U CN203317216U (en) | 2013-07-11 | 2013-07-11 | Pitch circle fixture for grinding inner holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204129474U CN203317216U (en) | 2013-07-11 | 2013-07-11 | Pitch circle fixture for grinding inner holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203317216U true CN203317216U (en) | 2013-12-04 |
Family
ID=49656610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204129474U Expired - Fee Related CN203317216U (en) | 2013-07-11 | 2013-07-11 | Pitch circle fixture for grinding inner holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203317216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112476231A (en) * | 2020-11-26 | 2021-03-12 | 华虹半导体(无锡)有限公司 | Method for cleaning grinding head of chemical mechanical grinding process |
-
2013
- 2013-07-11 CN CN2013204129474U patent/CN203317216U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112476231A (en) * | 2020-11-26 | 2021-03-12 | 华虹半导体(无锡)有限公司 | Method for cleaning grinding head of chemical mechanical grinding process |
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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: 20131204 Termination date: 20180711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |