CN219093661U - Back-pulling type internal expansion clamp - Google Patents
Back-pulling type internal expansion clamp Download PDFInfo
- Publication number
- CN219093661U CN219093661U CN202223486176.1U CN202223486176U CN219093661U CN 219093661 U CN219093661 U CN 219093661U CN 202223486176 U CN202223486176 U CN 202223486176U CN 219093661 U CN219093661 U CN 219093661U
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- China
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- connecting seat
- inner end
- fixed
- positioning block
- lathe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses a back-pulling type internal expanding clamp which comprises a body, a positioning block, a connecting seat and an elastic chuck, wherein the positioning block is arranged on the body; the inner end of the body is fixed on a main shaft of the lathe, the inner end of the positioning block is fixed at the outer end of the body, the inner end of the connecting seat is connected with a main shaft pull rod of the lathe, the connecting seat is movably sleeved in the body and can move back and forth in the body under the driving of the main shaft pull rod of the lathe, and the inner end of the elastic chuck is fixed at the outer end of the connecting seat. The elastic clamping head fixed on the connecting seat is sleeved on the push rod on the body under the drive of the lathe spindle pull rod, and the push rod expands the elastic clamping head to clamp the part, so that the clamping is convenient; the inner end of the positioning block is sleeved on the circular boss of the body to be positioned, and the outer end surface of the positioning block forms a reference surface for positioning the part, so that the positioning precision is high.
Description
Technical Field
The utility model relates to the field of machining, in particular to a back-pull type internal expanding clamp.
Background
The fixture is a device for fixing a processing object in a machining process so as to occupy a correct position for processing or detecting. As shown in fig. 2, the conventional machining method is to fix the part 10 by clamping the jaws on the chuck to the inner hole of the part 10, and the conventional clamping method has the defects of inaccurate positioning and low clamping speed.
Disclosure of Invention
The utility model aims to provide a back-pulling type internal expanding clamp with convenient clamping and high positioning precision.
In order to achieve the above object, the technical solution of the present utility model is:
the utility model relates to a back-pulling type internal expanding clamp which comprises a body, a positioning block, a connecting seat and an elastic chuck, wherein the positioning block is arranged on the body; the inner end of the body is fixed on a main shaft of the lathe, the inner end of the positioning block is fixed at the outer end of the body, the inner end of the connecting seat is connected with a main shaft pull rod of the lathe, the connecting seat is movably sleeved in the body and can move back and forth in the body under the driving of the main shaft pull rod of the lathe, and the inner end of the elastic chuck is fixed at the outer end of the connecting seat; the middle part of the outer end of the body is provided with a conical push rod which can pass through the conical hole of the elastic chuck and then be inserted into the conical hole of the elastic chuck to expand the elastic chuck to clamp the part.
The elastic clamping head consists of a base and a plurality of elastic clamping pieces; the inner cavities of the elastic clamping pieces are conical holes, and the inner ends of the elastic clamping pieces are fixed on the base.
The body is a cylinder, the outer end face of the body is provided with a circular boss, the end face of the circular boss is an axial positioning face, the outer circular wall of the circular boss is a radial positioning face, the inner end of the push rod is fixed in the middle of more than two connecting ribs, and more than two through holes are formed between the more than two connecting ribs so that the connecting seat is connected with a lathe spindle pull rod; the inner end of the positioning block is sleeved on the circular boss to be positioned, and the outer end face of the positioning block forms a reference surface for positioning the part.
After the scheme is adopted, the elastic clamping head comprises the body, the positioning block, the connecting seat and the elastic clamping head, wherein the elastic clamping head fixed on the connecting seat is sleeved on the push rod on the body under the drive of the main shaft pull rod of the lathe, and the push rod expands the elastic clamping head to clamp a part, so that the clamping is convenient; and the body is provided with a circular boss, the end face of the circular boss is an axial positioning face, the outer circular wall of the circular boss is a radial positioning face, the inner end of the positioning block is sleeved on the circular boss of the body to be positioned, the outer end face of the positioning block forms a reference face for positioning the part, and the positioning accuracy is high.
The utility model will be further described with reference to the drawings and the specific examples.
Drawings
FIG. 1 is an isometric view of the present utility model;
FIG. 2 is an isometric view of the present utility model with parts mounted thereto;
FIG. 3 is an exploded perspective view of the present utility model;
FIG. 4 is a schematic view of the collet of the present utility model mated with a body pushrod;
fig. 5 is a rear isometric view of the collet of the present utility model.
Detailed Description
As shown in fig. 1-5, the utility model is a back-pull internal expanding clamp, which comprises a body 1, a positioning block 2, a connecting seat 3 and an elastic chuck 4.
The inner end of the body 1 is fixed on a main shaft of a lathe, the inner end of the positioning block 2 is fixed at the outer end of the body 1, the inner end of the connecting seat 3 is connected with a main shaft pull rod of the lathe, the connecting seat 3 is movably sleeved in the body 1 and can move back and forth in the body 1 under the driving of the main shaft pull rod of the lathe, and the inner end of the elastic chuck 4 is fixed at the outer end of the connecting seat 3; the middle part of the outer end of the body 1 is provided with a conical push rod 11, and the conical push rod 11 can be inserted into the conical hole 421 of the collet 4 after passing through the conical push rod, so as to expand the collet 4 to clamp the part 10.
The elastic chuck 4 consists of a base 41 and a plurality of elastic clamping pieces 42; the plurality of elastic clamping pieces 42 are arranged in a cylindrical shape, the inner cavities of the plurality of elastic clamping pieces 42 are conical holes 421, and the inner ends of the plurality of elastic clamping pieces 42 are fixed on the base 41.
The body 1 is a cylinder, the outer end surface of the body 1 is provided with a circular boss 12, the end surface 121 of the circular boss 12 is an axial positioning surface, the outer circular wall 122 of the circular boss 12 is a radial positioning surface, the inner end of the push rod 11 is fixed in the middle of three link ribs 13, and three through holes 14 are formed among the three link ribs 13 so that the connecting seat 3 is connected with a lathe spindle pull rod; the inner end of the positioning block 2 is sleeved on the circular boss 12 to be positioned, and the outer end surface of the positioning block 2 forms a reference surface for positioning the part.
The working principle of the utility model is as follows:
the part 10 is sleeved on the elastic chuck 4, the elastic chuck 4 fixed on the connecting seat 3 is sleeved on the push rod 11 on the body 1 under the drive of the lathe spindle pull rod, and the push rod 11 is inserted into the conical hole 421 of the elastic chuck 4 to expand the elastic chuck 4 to clamp the part 10.
The foregoing description is only illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, i.e., the equivalent changes and modifications to the utility model as described in the claims and specification should be considered as falling within the scope of the utility model.
Claims (3)
1. A back-pull type internal expanding clamp is characterized in that: comprises a body, a positioning block, a connecting seat and an elastic chuck; the inner end of the body is fixed on a main shaft of the lathe, the inner end of the positioning block is fixed at the outer end of the body, the inner end of the connecting seat is connected with a main shaft pull rod of the lathe, the connecting seat is movably sleeved in the body and can move back and forth in the body under the driving of the main shaft pull rod of the lathe, and the inner end of the elastic chuck is fixed at the outer end of the connecting seat; the middle part of the outer end of the body is provided with a conical push rod which can pass through the conical hole of the elastic chuck and then be inserted into the conical hole of the elastic chuck to expand the elastic chuck to clamp the part.
2. The pull-back internal expanding fixture of claim 1, wherein: the elastic clamping head consists of a base and a plurality of elastic clamping pieces; the inner cavities of the elastic clamping pieces are conical holes, and the inner ends of the elastic clamping pieces are fixed on the base.
3. The pull-back internal expanding fixture of claim 1, wherein: the body is a cylinder, the outer end face of the body is provided with a circular boss, the end face of the circular boss is an axial positioning face, the outer circular wall of the circular boss is a radial positioning face, the inner end of the push rod is fixed in the middle of more than two connecting ribs, and more than two through holes are formed between the more than two connecting ribs so that the connecting seat is connected with a lathe spindle pull rod; the inner end of the positioning block is sleeved on the circular boss to be positioned, and the outer end face of the positioning block forms a reference surface for positioning the part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486176.1U CN219093661U (en) | 2022-12-26 | 2022-12-26 | Back-pulling type internal expansion clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486176.1U CN219093661U (en) | 2022-12-26 | 2022-12-26 | Back-pulling type internal expansion clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219093661U true CN219093661U (en) | 2023-05-30 |
Family
ID=86456658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223486176.1U Active CN219093661U (en) | 2022-12-26 | 2022-12-26 | Back-pulling type internal expansion clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219093661U (en) |
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2022
- 2022-12-26 CN CN202223486176.1U patent/CN219093661U/en active Active
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