CN214921130U - Clamp for step shallow hole gear - Google Patents
Clamp for step shallow hole gear Download PDFInfo
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- CN214921130U CN214921130U CN202121772500.9U CN202121772500U CN214921130U CN 214921130 U CN214921130 U CN 214921130U CN 202121772500 U CN202121772500 U CN 202121772500U CN 214921130 U CN214921130 U CN 214921130U
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Abstract
The utility model relates to the field of clamps, in particular to a clamp for a step shallow hole gear, which comprises a first top, a second top, an elastic chuck and a positioning cone, wherein the first top and the second top are oppositely arranged, the positioning cone is provided with a central hole, the first top passes through the central hole, the elastic chuck is sleeved outside the positioning cone, and the inner wall of the elastic chuck is in sliding fit with the cone head of the positioning cone; and a pulling rod is arranged on the outer side of the positioning cone and connected with the elastic chuck. This scheme has realized carrying out the centre gripping to step shallow hole gear.
Description
Technical Field
The utility model relates to an anchor clamps field, concretely relates to anchor clamps for step shallow bore gear.
Background
As shown in fig. 1, for processing a gear 2 with a hole, a plate tooth fixture is usually adopted to clamp the gear 2, the plate tooth fixture comprises a positioning head 3, an elastic expansion sleeve 1, a pressing cover and a pull rod, during clamping, the pressing cover is located on two sides of the gear 2 and clamps two sides of the gear 2, meanwhile, the pull rod moves rightwards, the left end of the pull rod pushes the left end of the elastic expansion sleeve 1, the elastic expansion sleeve 1 slides rightwards on the positioning head 3, the elastic expansion sleeve 1 and the positioning head 3 are matched through an inclined plane, so that the elastic expansion sleeve 1 is tensioned outwards, and the elastic expansion sleeve 1 centers the gear 2 (realizing gapless matching). In general, if the outer shape of the gear 2 is not too irregular, the fixture can ensure that the machined gear 2 has ideal precision.
The fixture is used for processing most of the through-hole gears 2, and has the advantages of simple design and manufacture, stable precision of the processed gears 2 and high efficiency. However, when the workpiece 5 of fig. 2 is machined, the outer shape of the workpiece 5 is too long due to the short and shallow positioning holes inside the workpiece 5; and secondly, the positioning hole is a step hole. In this case, the elastic expansion sleeve 1 on the clamp is used for tensioning the gear 2, and the left end face of the pull rod presses the elastic expansion sleeve 1 to axially displace on the positioning head 3, so that the expansion sleeve expands, the elastic expansion sleeve is matched with the gear 2 without a gap to center and transmit torque, but the pull rod occupies a certain space, and because the workpiece positioning hole in fig. 2 is shallow, if the mode that the end face of the pull rod presses the elastic expansion sleeve 1 to displace and tension is adopted, the contact area between the elastic expansion sleeve 1 and the positioning hole in the workpiece is reduced, centering is influenced, and the transmitted torque is insufficient, so that the precision of the processed gear 2 is influenced. Meanwhile, one side of the workpiece is long, so that the two sides of the workpiece cannot be pressed in a gland mode, and therefore the clamp in the prior art is not suitable for clamping the gear with the step hole and the shallow positioning hole in the graph 2.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is providing step shallow hole anchor clamps for gear to realize carrying out the centre gripping to step shallow hole gear.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the clamp for the step shallow hole gear comprises a first tip, a second tip, an elastic chuck and a positioning cone, wherein the first tip and the second tip are oppositely arranged, a central hole is formed in the positioning cone, the first tip penetrates through the central hole, the elastic chuck is sleeved on the outer side of the positioning cone, and the inner wall of the elastic chuck is in sliding fit with the cone head of the positioning cone; and a pulling rod is arranged on the outer side of the positioning cone and connected with the elastic chuck.
The principle and the advantages of the scheme are as follows: when the workpiece is clamped, the elastic expansion sleeve tensioning inner hole is changed into the elastic chuck tensioning inner hole, the pulling rod does not penetrate through the positioning cone any more, the space occupation of the pulling rod is saved, the contact area of the expansion hole is increased, and the torque transmission is more sufficient. Meanwhile, the first center and the second center respectively support the two ends of the workpiece tightly, so that the centering of the workpiece is realized, the centering of the workpiece is mainly realized by the first center and the second center, and the centering of the workpiece is more reliable and stable. Therefore, the clamping of the step shallow hole gear is realized, and the clamping of the workpiece is more reliable and stable.
Preferably, as an improvement, still include the spring holder, spring holder fixed connection is kept away from the cone head on the one end at the location awl, is connected with the pressure spring between spring holder and the first top. Thus, the spring seat supports the compression spring. First top is connected on the pressure spring, and first top and second are top when supporting tightly the work piece like this, and the pressure spring receives the extrusion and can take place deformation to make first top can retreat under the effect of pressure, avoid first top and second top to carry out the rigid contact and cause the work piece to damage to the work piece, the pressure spring has played the effect of buffering.
Preferably, as an improvement, still include support body and brace table, be equipped with connecting portion on the outside portion of location awl, connecting portion fixed connection is between support body and brace table. Therefore, the support table is used for supporting the workpiece, the workpiece is supported through the support table, and the axial positioning of the workpiece is realized. Through making connecting portion be located between support body and the brace table, connecting portion connect simultaneously on support body and brace table to support body, connecting portion and brace table three's connection has been realized.
Preferably, as a modification, the connecting portion is connected between the frame body and the support table by bolts.
Preferably, as an improvement, the frame body is provided with a sliding hole, a pulling part is connected in the sliding hole in a sliding manner, and the pulling part is connected with the pulling rod together. Therefore, the pulling piece slides in the sliding hole, and drives the pulling rod to move, so that the elastic chuck is pulled. Through set up the slip hole on the support body, draw like this and slide to be located the slip hole, draw the outside that the piece can not be located the support body for draw the piece and can not occupy too much space.
Preferably, as an improvement, the end that the first top is equipped with the pressure spring, all be equipped with the spring groove on the side that the spring holder is connected with the pressure spring, the both ends of pressure spring are located two spring grooves respectively. Therefore, the two ends of the pressure spring are respectively positioned in the spring grooves, so that the pressure spring is not bent due to deformation when being extruded, and the deformation process of the pressure spring is relatively stable.
Drawings
Fig. 1 is a front cross-sectional view of a prior art disc tooth clamp.
Fig. 2 is a front cross-sectional view of a workpiece.
Fig. 3 is a front sectional view of the jig for a stepped shallow bore gear.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises an elastic expansion sleeve 1, a gear 2, a positioning head 3, a second tip 4, a workpiece 5, a positioning cone 6, an elastic chuck 7, a first tip 8, a pressure spring 9, a spring seat 10, a pulling part 11, a frame body 12 and a support table 13.
The embodiment is substantially as shown in figure 3: step anchor clamps for shallow hole gear, including support body 12, a supporting bench 13, spring holder 10, first top 8, top 4 of second, collet 7 and location awl 6, support body 12 is located the below of a supporting bench 13, integrated into one piece has the connecting portion that the protrusion set up on the outside of the bottom of location awl 6, the connecting portion of location awl 6 pass through the bolt fastening on the top of support body 12, supporting bench 13 presses the top on the connecting portion of location awl 6 bottom, pass through bolt fixed connection between the connecting portion of supporting bench 13 and location awl 6. Be equipped with vertical centre bore on the location awl 6, spring holder 10 passes through bolt fixed connection on the bottom of location awl 6, and the centre bore on the location awl 6 is passed to first top 8 is vertical, is connected with pressure spring 9 between the top of spring holder 10 and the bottom of first top 8, all is equipped with vertical spring groove on the bottom of first top 8 in this embodiment, the top of spring holder 10, and the both ends of pressure spring 9 are located two spring inslots respectively. The depth of the spring groove in the first apex 8 is greater than the depth of the spring groove on the spring seat 10.
The first apex 8 and the second apex 4 are oppositely disposed, the second apex 4 being located above the first apex 8. The top of location awl 6 is the awl head, and the awl head is the toper, and collet 7 cover is in the outside of location awl 6, and collet 7 is located between supporting bench 13 and the location awl 6, and collet 7's top inner wall passes through inclined plane sliding fit with the awl head of location awl 6. The outside of location awl 6 is equipped with the pulling rod, is equipped with vertical through-hole on the location awl 6, and the pulling rod passes the through-hole, and the pulling rod can be vertical slip on location awl 6 like this, and the bottom joint of pulling rod and collet 7. Be equipped with vertical slip hole on the support body 12, vertical slip has the pulling piece 11 in the slip hole, and the pulling piece 11 in this embodiment is the pulling piece, and the pulling piece 11 is in the same place with pulling pole threaded connection. The bottom of the pulling part 11 is connected with a pulling device such as a hydraulic rod or an air cylinder.
The specific implementation process is as follows: the bottom of the workpiece 5 is placed on the supporting table 13, the supporting table 13 axially positions the workpiece 5, then the second tip 4 moves downwards, the second tip 4 tightly supports the top of the workpiece 5, and meanwhile the first tip 8 tightly supports a hole in the bottom of the workpiece 5, so that the centering of the workpiece 5 is realized. When the second centre 4 pushes down the workpiece 5, the second centre 4 pushes down the first centre 8 through the workpiece 5, the first centre 8 extrudes the pressure spring 9, the pressure spring 9 deforms, and the pressure spring 9 enables the first centre 8 to have certain abutting force under the action of elastic force.
Then, the pulling part 11 moves downwards, the pulling part 11 drives the pulling rod to move downwards, the pulling rod drives the elastic chuck 7 to move downwards, the top end of the elastic chuck 7 slides downwards on the conical head of the positioning cone 6, the elastic chuck 7 expands outwards through the inclined surface matching, the elastic chuck 7 tightly tensions the inner hole of the workpiece 5, and the elastic chuck 7 tightly tensions the inner hole of the workpiece 5 to transfer torque so as to facilitate machining.
The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. Step shallow hole anchor clamps for gear, its characterized in that: the positioning device comprises a first tip, a second tip, an elastic chuck and a positioning cone, wherein the first tip and the second tip are oppositely arranged, a central hole is formed in the positioning cone, the first tip penetrates through the central hole, the elastic chuck is sleeved on the outer side of the positioning cone, and the inner wall of the elastic chuck is in sliding fit with the cone head of the positioning cone; and a pulling rod is arranged on the outer side of the positioning cone and connected with the elastic chuck.
2. The jig for stepped shallow bore gears of claim 1 wherein: the positioning cone is fixedly connected to one end, far away from the cone head, of the positioning cone, and a pressure spring is connected between the spring seat and the first tip.
3. The jig for stepped shallow bore gears of claim 1 wherein: still include support body and brace table, be equipped with connecting portion on the outside portion of location awl, connecting portion fixed connection is between support body and brace table.
4. The jig for stepped shallow bore gears of claim 3 wherein: the connecting part is connected between the frame body and the support platform through a bolt.
5. The jig for stepped shallow bore gears of claim 3 wherein: the frame body is provided with a sliding hole, a pulling part is connected in the sliding hole in a sliding mode, and the pulling part is connected with a pulling rod together.
6. The jig for stepped shallow bore gears of claim 2 wherein: the first apex is equipped with the one end of pressure spring, spring seat connection have all be equipped with the spring groove on the side of pressure spring, the both ends of pressure spring are located two spring grooves respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772500.9U CN214921130U (en) | 2021-07-30 | 2021-07-30 | Clamp for step shallow hole gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772500.9U CN214921130U (en) | 2021-07-30 | 2021-07-30 | Clamp for step shallow hole gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214921130U true CN214921130U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121772500.9U Active CN214921130U (en) | 2021-07-30 | 2021-07-30 | Clamp for step shallow hole gear |
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| CN (1) | CN214921130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115194529A (en) * | 2022-09-15 | 2022-10-18 | 河北力准机械制造有限公司 | Inner hole fine boring centering mechanism and inner hole fine boring machine tool applying same |
-
2021
- 2021-07-30 CN CN202121772500.9U patent/CN214921130U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115194529A (en) * | 2022-09-15 | 2022-10-18 | 河北力准机械制造有限公司 | Inner hole fine boring centering mechanism and inner hole fine boring machine tool applying same |
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