CN219234662U - Three-point self-alignment device - Google Patents
Three-point self-alignment device Download PDFInfo
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- CN219234662U CN219234662U CN202223392895.7U CN202223392895U CN219234662U CN 219234662 U CN219234662 U CN 219234662U CN 202223392895 U CN202223392895 U CN 202223392895U CN 219234662 U CN219234662 U CN 219234662U
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Abstract
The utility model discloses a three-point self-alignment device, which comprises a three-jaw hydraulic chuck, a positioning substrate and a side positioning mechanism, wherein the three-jaw hydraulic chuck is fixed in the positioning substrate, each sliding block of the three-jaw hydraulic chuck is fixedly provided with a pushing block, the top of the pushing block is provided with a placement plane, the top of the placement plane corresponding to one end of the center of the chuck is provided with a convex block, and one surface of the convex block corresponding to the placement plane is provided with an arc convex surface; the side positioning mechanism is fixed on the positioning substrate and comprises an upright post and a positioning block, a slot is formed in the side face of the upright post, the positioning block is installed in the slot through a spring, and a V-shaped clamping groove is formed in one end, corresponding to the three-jaw hydraulic chuck, of the positioning block. The device aligns the machining center point of the cylinder body fast and accurately through three contact points, and the subsequent machining precision and efficiency of the product are improved.
Description
Technical Field
The utility model belongs to the technical field of CNC machining, belongs to a workpiece clamping device, and relates to a three-point self-alignment device.
Background
Shown in fig. 1 is a kind of cylindricality foundry goods, and it includes cylinder body a and several lug B that sets up on the cylinder body lateral wall, and cylinder body a's inside is provided with through-hole C, because cylinder body's slotted hole inner wall is uneven basically, can't regard as locating feature, so it is crucial to find foundry goods blank machining center point in first machining process.
Disclosure of Invention
The utility model aims to solve the technical problems that: and how to quickly and accurately find the machining center point of the casting blank.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the three-point self-alignment device comprises a three-jaw hydraulic chuck, a positioning substrate and a side positioning mechanism, wherein the three-jaw hydraulic chuck is fixed in the positioning substrate, each sliding block of the three-jaw hydraulic chuck is fixedly provided with a pushing block, the top of each pushing block is provided with a placement plane, the top of each placement plane corresponding to one end of the center of the chuck is provided with a lug, and one surface of each lug corresponding to the placement plane is provided with an arc-shaped convex surface; the side positioning mechanism is fixed on the positioning substrate and comprises an upright post and a positioning block, a slot is formed in the side face of the upright post, the positioning block is installed in the slot through a spring, and a V-shaped clamping groove is formed in one end, corresponding to the three-jaw hydraulic chuck, of the positioning block.
Compared with the prior art, the utility model has the following beneficial effects: placing the casting blank on the placing planes of the three pushing blocks, wherein the convex blocks are positioned in the through holes, and the arc convex surfaces of the convex blocks are not contacted with the inner walls of the through holes; rotating the casting blank to enable the selected lug to rotate to the positioning block, and clamping the lug into a V-shaped clamping groove of the positioning block under the action of a spring; and the three-jaw hydraulic chuck is started to enable the three sliding blocks to slide outwards, the arc-shaped convex surfaces of the three convex blocks are in point contact with the inner wall of the round hole, and the three-jaw hydraulic chuck is used for aligning the machining center point of the cylindrical body rapidly and accurately through the three contact points, so that the subsequent machining precision and efficiency of products are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a top view of one product of the prior art;
FIG. 2 is a block diagram of a three-point self-alignment device in an embodiment;
fig. 3 is a top view of a three-point self-alignment device in an embodiment.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the embodiments.
Examples
The three-point self-alignment device shown in fig. 2 and 3 comprises a three-jaw hydraulic chuck 10, a positioning substrate 20 and a side positioning mechanism 30, wherein the three-jaw hydraulic chuck is fixed in the positioning substrate, each slide block of the three-jaw hydraulic chuck is fixedly provided with a push block 40, the top of the push block is provided with a placement plane 41, the top of the placement plane corresponding to one end of the center of the chuck is provided with a bump 42, and one surface of the bump corresponding to the placement plane is provided with an arc convex surface 421; the side positioning mechanism is fixed on the positioning substrate and comprises a stand column 31 and a positioning block 32, a slot is formed in the side face of the stand column, the positioning block is installed in the slot through a spring, and a V-shaped clamping groove 321 is formed in one end, corresponding to the three-jaw hydraulic chuck, of the positioning block.
The use flow of the alignment device is as follows:
firstly, placing a casting blank on a placing plane 41 of three pushing blocks 40, wherein a convex block 42 is positioned in a through hole, and an arc convex surface 421 of the convex block is not contacted with the inner wall of the through hole;
secondly, rotating the casting blank to enable the selected lugs to rotate to the positioning block 32, and clamping the lugs into the V-shaped clamping grooves 321 of the positioning block under the action of the springs;
third, the three-jaw hydraulic chuck 10 is started to enable the three sliding blocks to slide outwards, the arc convex surfaces 421 of the three convex blocks 42 are in point contact with the inner wall of the round hole, and the three-jaw hydraulic chuck aligns the machining center point of the cylindrical body through the three contact points.
Since the positioning block 32 is mounted in the slot by a spring, the positioning block can be fine-tuned by the spring in the third step, even if the position of the lug changes slightly.
Preferably, a handle 33 is arranged in the upright 31, and one end of the positioning block 32 opposite to the V-shaped clamping groove 321 is connected with the handle through a screw shaft sleeve assembly. In the actual operation process, the positioning block is driven to move in the direction away from or close to the product by the rotating handle, so that the device is convenient and quick.
After the casting blank is aligned to the machining center point, the casting blank is required to be communicated with the CNC equipment for machining, so that the product is required to be subjected to rotation stopping treatment, and the machining stability of the product is improved.
The baffle 50 is arranged at the top of the placement plane 41, a clamping groove is formed between the baffle and the convex block, the tooth surface end of the tooth-shaped screw is positioned in the clamping groove, and after the third step is finished, the product is prevented from shaking by tightening the tooth-shaped screw to give the product pressing force from the outer side.
The tooth-shaped screw is a standard part, the tooth surface end has an applicable angle of 9 degrees, and the tooth-shaped screw can be attached to the outer surface of the blank along with the shape of the blank.
The positioning substrate 20 is provided with a threaded rod 70 penetrating from the center of the chuck, and a pressing plate 80 is mounted on the threaded rod. After the casting blank is positioned and clamped, a pressing plate is placed above the casting blank, and the pressing plate gives a blank pressing force from above. Preferably, a U-shaped clamping groove 81 is formed in the pressing plate, the threaded rod is inserted into the U-shaped clamping groove, a nut 90 positioned above the pressing plate is arranged on the threaded rod, and the pressing block can be tightly pressed on the top of the casting blank by tightening the nut.
The device aligns the machining center point of the cylinder body fast and accurately through three contact points, and the subsequent machining precision and efficiency of the product are improved.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The three-point self-alignment device is characterized by comprising a three-jaw hydraulic chuck, a positioning substrate and a side positioning mechanism, wherein the three-jaw hydraulic chuck is fixed in the positioning substrate, each sliding block of the three-jaw hydraulic chuck is fixedly provided with a pushing block, the top of each pushing block is provided with a placement plane, the top of one end of the placement plane, corresponding to the center of the chuck, is provided with a lug, and one surface of each lug, corresponding to the placement plane, is provided with an arc-shaped convex surface; the side positioning mechanism is fixed on the positioning substrate and comprises an upright post and a positioning block, a slot is formed in the side face of the upright post, the positioning block is installed in the slot through a spring, and a V-shaped clamping groove is formed in one end, corresponding to the three-jaw hydraulic chuck, of the positioning block.
2. The three-point self-aligning device according to claim 1, wherein a handle is arranged in the upright, and one end of the positioning block, which is opposite to the V-shaped clamping groove, is connected with the handle through a screw rod shaft sleeve assembly.
3. The three-point self-aligning device according to claim 1, wherein a baffle is arranged at the top of the placement plane, a clamping groove is formed between the baffle and the protruding block, a tooth-shaped screw is arranged in the baffle, and the tooth surface end of the tooth-shaped screw is positioned in the clamping groove.
4. The three-point self-aligning device of claim 1 wherein the positioning base plate has a threaded rod extending from the center of the chuck, and wherein the threaded rod has a platen mounted thereon.
5. The three-point self-aligning device according to claim 4, wherein a nut positioned above the pressing plate is installed on the threaded rod, a U-shaped clamping groove is formed in the pressing plate, and the threaded rod is inserted into the U-shaped clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223392895.7U CN219234662U (en) | 2022-12-14 | 2022-12-14 | Three-point self-alignment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223392895.7U CN219234662U (en) | 2022-12-14 | 2022-12-14 | Three-point self-alignment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219234662U true CN219234662U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223392895.7U Active CN219234662U (en) | 2022-12-14 | 2022-12-14 | Three-point self-alignment device |
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| Country | Link |
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| CN (1) | CN219234662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117944085A (en) * | 2024-03-22 | 2024-04-30 | 西安百润重工科技有限公司 | Self-aligning clamping mechanism |
-
2022
- 2022-12-14 CN CN202223392895.7U patent/CN219234662U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117944085A (en) * | 2024-03-22 | 2024-04-30 | 西安百润重工科技有限公司 | Self-aligning clamping mechanism |
| CN117944085B (en) * | 2024-03-22 | 2024-06-11 | 西安百润重工科技有限公司 | Self-aligning clamping mechanism |
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