CN214770486U - Double-gland inner hole machining clamp - Google Patents
Double-gland inner hole machining clamp Download PDFInfo
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- CN214770486U CN214770486U CN202120476746.5U CN202120476746U CN214770486U CN 214770486 U CN214770486 U CN 214770486U CN 202120476746 U CN202120476746 U CN 202120476746U CN 214770486 U CN214770486 U CN 214770486U
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- gland
- hole
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- expansion sleeve
- wall
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Abstract
The utility model discloses a two gland hole machining anchor clamps, including the anchor clamps main part, the cover that rises, locating piece, first gland and second gland. The clamp body is provided with a taper hole for mounting the expansion sleeve, a stepped hole positioned at the bottom of the taper hole, a first outer wall and a second outer wall; the expansion sleeve is movably arranged in a taper hole of the clamp main body and used for centering the excircle of the workpiece; the positioning block is positioned on the stepped hole and used for supporting the inner end face of the workpiece; the first gland is arranged on the clamp main body, is in threaded fit with the first outer wall and is used for compressing the outer end face of the expansion sleeve; the second gland sets up on the anchor clamps main part, and with second outer wall screw-thread fit for compress tightly the outer terminal surface of work piece. The utility model discloses a two gland hole adds clamping apparatus, through the mode that excircle centering, terminal surface compressed tightly, the thin-walled gear hole of keyway is taken in the processing, simple structure, and the stable performance has solved the thin-walled gear processing back internal tooth geometric tolerances of taking the keyway and the unqualified problem of size.
Description
Technical Field
The utility model relates to an electric drive assembly technical field especially relates to a two pressure cover hole adds clamping apparatus.
Background
In the manufacture of automotive transmissions and electric drive assemblies, it is common to involve machining of disc tooth type products, as shown in fig. 7.
FIG. 7 shows a thin-walled gear with a key slot, wherein the thickness of the gear at the thinnest position of the key slot is only 1.5mm due to various dimensional requirements such as the diameter of the addendum circle, the diameter of the dedendum circle, the depth of the key slot and the like of the gear. When the addendum circle or pitch circle is clamped after heat treatment to process the inner hole, the inner hole is subjected to plastic deformation under the action of the clamping force.
After the inner hole is machined, the requirement of 0.006 cylindricity of the inner hole can be met when the clamping force is kept, but after the clamping force is removed and the workpiece is taken off from a machine tool, the plastic deformation recovery causes the form and position tolerance and the size change of the inner hole, so that the form and position tolerance and the size of the inner hole are unqualified.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two pressure lid hole machining anchor clamps to hole geometric tolerances and the unqualified problem of size after solving this type of thin wall gear machining.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a two gland hole machining anchor clamps, includes the anchor clamps main part, rises the cover, the locating piece, first gland and second gland. The clamp body is provided with a taper hole for mounting the expansion sleeve, a stepped hole positioned at the bottom of the taper hole, a first outer wall and a second outer wall; the expansion sleeve is movably arranged in the taper hole of the clamp main body and used for centering the excircle of the workpiece; the positioning block is positioned on the stepped hole and used for supporting the inner end face of the workpiece; the first gland is arranged on the clamp main body, is in threaded fit with the first outer wall and is used for compressing the outer end face of the expansion sleeve; the second gland is arranged on the clamp main body, is in threaded fit with the second outer wall and is used for compressing the outer end face of the workpiece.
Further, a wrench is arranged on the second gland.
Further, be interference fit between anchor clamps main part and the locating piece.
Further, the second gland cover is arranged on the first gland cover, and the first gland cover compresses the expansion sleeve through screwing.
Further, the top of locating piece is equipped with the work piece and processes and dodge the groove.
Compared with the prior art, the utility model relates to a two pressure lid hole adds clamping apparatus's beneficial effect is:
the utility model provides a double-gland inner hole processing clamp, which solves the defects of unqualified internal tooth geometric tolerance and size after the thin-wall gear with a key groove in the background technology is processed, and a first gland of a double-gland structure is used for compressing an expansion sleeve to play a role in finding the center of a workpiece; the second gland is used for compressing tightly the work piece, plays the effect of pressing from both sides tight work piece, and two gland anchor clamps that compress tightly through excircle centering, terminal surface are used for processing this kind of thin wall gear hole of taking the keyway, simple structure, stable performance.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. On the attachment
In the figure:
FIG. 1 is a schematic structural view of the double-gland inner hole machining clamp of the present invention;
FIG. 2 is a schematic view of the main structure of the double-gland inner hole machining clamp of the present invention;
FIG. 3 is a schematic view of the first gland structure of the double-gland inner hole machining fixture of the present invention;
FIG. 4 is a schematic view of a second gland structure of the double-gland inner hole machining fixture of the present invention;
FIG. 5 is a schematic view of the positioning block structure of the double-gland inner hole machining fixture of the present invention;
FIG. 6 is a schematic view of the expanding sleeve structure of the double-gland inner hole processing clamp of the present invention;
fig. 7 is a schematic structural view of the middle disc tooth workpiece of the present invention.
Description of the reference numerals
1. A clamp body; 101. a first outer wall; 102. a second outer wall; 2. expanding sleeves; 201. an aperture; 202. a groove; 3.
positioning blocks; 4. a first gland; 5. a second gland; 6. a wrench; 7. and (5) a workpiece.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention is further described with reference to the accompanying drawings and examples: with reference to figures 1-6 of the drawings,
as shown in fig. 1 to 7, in an embodiment, a double-gland inner hole machining clamp includes a clamp body 1, an expansion sleeve 2, a positioning block 3, a first gland 4 and a second gland 5.
The clamp body 1 is provided with a taper hole for mounting the expansion sleeve 2, a stepped hole at the bottom of the taper hole, a first outer wall 101 and a second outer wall 102; the expansion sleeve 2 is movably arranged in a taper hole of the clamp main body 1 and used for centering the outer circle of the workpiece 7.
The positioning block 3 is positioned on the stepped hole and used for supporting the inner end face of the workpiece 7; the first gland 4 is arranged on the clamp body 1, is in threaded fit with the first outer wall 101 and is used for compressing the outer end face of the expansion sleeve 2; the second pressing cover 5 is arranged on the clamp body 1 and is in threaded fit with the second outer wall 102 for pressing the outer end face of the workpiece 7.
In one embodiment, as shown in fig. 1, a wrench 6 is disposed on the second gland 5. The second gland 5 is in clearance fit with the wrench 6. The wrench 6 is used for being inserted into a groove in the side wall of the second gland 5 and rotating and screwing the second gland 5.
Further, the clamp body 1 and the positioning block 3 are in interference fit.
Further, the second gland 5 is covered on the first gland 4, and the first gland 4 compresses the expansion sleeve 2 through screwing.
In one embodiment, as shown in fig. 6, the expanding sleeve 2 has a cylindrical hole and a conical surface matching with the conical hole, and the expanding sleeve 2 is provided with a hole 201 and a groove 202 in a crossed manner.
In one embodiment, the conical surface of the clamp body 1 is 20 degrees, the conical surface of the expansion sleeve 2 is 20 degrees and matched with the clamp body, and the contact area is larger than 80 percent and is movably arranged in the conical hole of the clamp body 1.
As shown in fig. 5, in an embodiment, a workpiece processing avoiding groove is formed at the top end of the positioning block 3.
As shown in fig. 1, the first gland 4 has a first central through hole; the second gland 5 has a second central through hole. The first central through hole diameter is greater than the second central through hole diameter. The first central through hole is used for accommodating a stress part of the second gland 5 for compressing the workpiece. The inner wall of the second gland 5 is provided with a groove for accommodating the first gland 4.
Compared with the prior art, the utility model relates to a two pressure lid hole adds clamping apparatus's beneficial effect is:
the utility model discloses a thin wall gear work piece's of keyway is smugglied secretly in anchor clamps process as follows:
as shown in fig. 1, the jig assembly is mounted on a machine tool, and the clamping force clamps the jig main body 1. When the expansion sleeve 2 is used, the second gland 5 is taken down, the first gland 4 is unscrewed to prevent the expansion sleeve 2 from being pressed, and the expansion sleeve 2 is in a loose state; the workpiece 7 is arranged at the position shown in figure 1, and a larger gap is formed between the excircle of the workpiece 7 and the inner hole of the expansion sleeve 2; the first gland 4 is screwed by hand to press the expansion sleeve 2, the clearance between the inner hole of the expansion sleeve 2 and the excircle of the workpiece 7 is gradually reduced when the expansion sleeve 2 contracts, and the action of screwing the first gland 4 is stopped when the inner hole of the expansion sleeve 2 is initially contacted with the excircle of the workpiece 7 (namely the force for screwing the first gland 4 is sensed to be increased); the second gland 5 is screwed up so that the end face thereof presses the workpiece 7 and the second gland 5 is screwed down by the wrench 6 so that the workpiece 7 is completely fixed. And (5) after the inner hole is machined, unscrewing the second gland 5 by using a wrench 6, taking down the second gland, and taking out the workpiece 7.
When the double-gland inner hole machining clamp is used for clamping a workpiece, the force exerted on the addendum circle of the workpiece 7 is small, the plastic deformation caused by large clamping force is effectively avoided, and the first gland 4 with the double-gland structure is used for compressing the expansion sleeve 2 to play a role in finding the center of the workpiece 7; the second gland 5 is used for compressing tightly work piece 7, plays the effect of pressing from both sides tight work piece 7, and two gland anchor clamps that compress tightly through excircle centering, terminal surface are used for processing this type of thin-walled gear hole of taking the keyway, and simple structure, the stable performance has solved the unqualified problem of internal tooth geometric tolerances and size after the thin-walled gear processing of taking the keyway in the background art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (5)
1. A clamp for processing an inner hole of double press covers is characterized by comprising a clamp main body, an expansion sleeve, a positioning block, a first press cover and a second press cover, wherein,
the clamp body is provided with a taper hole for mounting the expansion sleeve, a stepped hole positioned at the bottom of the taper hole, a first outer wall and a second outer wall;
the expansion sleeve is movably arranged in the taper hole of the clamp main body and used for centering the excircle of the workpiece;
the positioning block is positioned on the stepped hole and used for supporting the inner end face of the workpiece;
the first gland is arranged on the clamp main body, is in threaded fit with the first outer wall and is used for compressing the outer end face of the expansion sleeve;
the second gland is arranged on the clamp main body, is in threaded fit with the second outer wall and is used for compressing the outer end face of the workpiece.
2. The clamp for machining the inner hole of the double pressing covers according to claim 1, wherein a wrench is arranged on the second pressing cover.
3. The clamp for machining the inner hole of the double press covers as claimed in claim 1, wherein the clamp body and the positioning block are in interference fit.
4. The double-gland inner hole machining clamp according to claim 1, wherein the second gland is arranged on a first gland, and the first gland compresses the expansion sleeve by screwing.
5. The clamp for machining the inner hole of the double press covers as claimed in claim 1, wherein a workpiece machining avoiding groove is formed at the top end of the positioning block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476746.5U CN214770486U (en) | 2021-03-04 | 2021-03-04 | Double-gland inner hole machining clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476746.5U CN214770486U (en) | 2021-03-04 | 2021-03-04 | Double-gland inner hole machining clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214770486U true CN214770486U (en) | 2021-11-19 |
Family
ID=78755513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120476746.5U Active CN214770486U (en) | 2021-03-04 | 2021-03-04 | Double-gland inner hole machining clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214770486U (en) |
-
2021
- 2021-03-04 CN CN202120476746.5U patent/CN214770486U/en active Active
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