CN210548197U - Adjustable axial jacking clamp arranged in hollow power chuck - Google Patents
Adjustable axial jacking clamp arranged in hollow power chuck Download PDFInfo
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- CN210548197U CN210548197U CN201921064443.1U CN201921064443U CN210548197U CN 210548197 U CN210548197 U CN 210548197U CN 201921064443 U CN201921064443 U CN 201921064443U CN 210548197 U CN210548197 U CN 210548197U
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Abstract
The utility model discloses an axial top tight anchor clamps with adjustable settle in cavity power chuck, it is including the barrel of placeeing in cavity power chuck hole to and ring flange, dabber, spring, plug screw and the ejector piece that matches. The core shaft arranged in the cylinder body is sleeved with a spring, and the screwed plug pressing spring forms an axially telescopic adjusting structure. The right shaft end of the mandrel is a short conical shaft which is matched with the flange plate. The ejector block is positioned on one side of the outer end face of the hollow power chuck and is positioned on the same axis with the mandrel, the ejector block moves along with the numerical control lathe turret, the face of the ejector block moves towards the end face of the workpiece to the left to the end point position, and the position is a set positioning reference face, so that a positioning structure for restraining the workpiece by the flange plate and the ejector block together is formed. Because the ejector block configured on the numerical control lathe turret has high positioning precision, the positioning requirement of the workpiece is met, the workpiece is accurately, reliably and efficiently positioned and installed, the subsequent machining is facilitated, and the stable machining quality of the workpiece is ensured.
Description
Technical Field
The utility model belongs to the technical field of the machining anchor clamps, specifically say, the utility model relates to an axial top tight anchor clamps, especially settle the axial top tight anchor clamps with adjustable in cavity power chuck.
Background
With the development of the times, the machining capability of the machine manufacturing industry is greatly improved, and particularly for enterprises with mass production requirements, numerical control equipment such as a numerical control lathe with high automation performance is generally purchased and is popularly used for realizing high-efficiency machining. A hollow power chuck is commonly arranged on a commercially available numerical control lathe, and the arrangement can meet the requirements of automatically, efficiently and accurately clamping a workpiece with an outer circle as a positioning reference. However, in reality, the positioning reference of some members is not the outer circle but the end face of the workpiece. For example, a disk blank for an automotive transmission is a powder metallurgy product, the right-side concave end surface and the matching annular groove of which are pressed and formed, and the end surface is required to be used as a positioning reference for machining, so the end surface is not machined. The end face of the outer contour on one side facing the right concave end face requires finish machining, the position error of the end face relative to the concave end face after machining is only 0.03mm, the precision requirement is relatively high, the workpiece is clamped by a conventional method and cannot meet the expectation, and the design requirement can be met only by clamping under the positioning condition. The position precision of the cutter tower of the commercial numerical control lathe is usually +/-0.005 mm, the precision is far higher than the machining precision of a workpiece, and the cutter tower can be completely used as a positioning and mounting reference of the workpiece. In the prior art, a material pushing block is arranged on a turret matched with a numerical control lathe and used as a positioning and mounting reference of a workpiece, and the workpiece is only depended on one side, so that the positioning and mounting position is unstable, the problem of partial clamping is easily caused, and the quality of a processed product cannot be expected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly to current commercially available cavity power chuck function singleness not enough, provide an axial top tight anchor clamps with adjustable settle in cavity power chuck, this compact structure, reasonable, the action is nimble, reliable, accomplishes to install the work piece that targets in place and fixes a position promptly.
The utility model discloses a technical goal is realized to following technical scheme.
The adjustable axial jacking fixture arranged in the hollow power chuck comprises a cylinder body inserted in an inner hole of the hollow power chuck, and a flange plate, a mandrel, a spring, a plug screw and a jacking block which are matched with each other. The improvement is that: the cylinder body is positioned on the outer end face of the hollow power chuck by a radial flange at the right end and is fixedly connected, a core shaft arranged in the inner cavity of the cylinder body is sleeved with a spring, and a screw plug pressure spring screwed in from an inner hole at the left end of the cylinder body, so that an adjusting structure for axially stretching the core shaft relative to the cylinder body is formed. The right shaft end of the mandrel is a short conical shaft, the short conical shaft axially extends out of the orifice at the right end of the cylinder body and is used for positioning and mounting a flange plate, and the right end face of the flange plate props against the left end face of the workpiece. The ejector block is positioned on one side opposite to the outer end face of the matched hollow power chuck and is positioned on the same axis with the mandrel, the ejector block moves along with the turret of the numerical control lathe, and the ejector block moves to the left to the end point position, namely the positioning reference surface set by the workpiece, so that the end face positioning structure for finally positioning the workpiece by the ejector block under the matching of the flange plates is formed.
As a further improvement, the right end face of the flange plate is a plane, the circular flange plate can only axially move in the clamping range of the clamping jaws of the chuck, and the diameter of the flange plate is at least 10mm smaller than the maximum outer diameter of a workpiece.
As a further improvement, the spring is a compression spring.
Compared with the prior art, the utility model, following positive effect has:
1. the adjustable axial jacking structure is arranged in the central hole of the hollow power chuck, so that normal clamping is not influenced completely, the structure is compact, the configuration is reasonable, and the use is convenient;
2. the adjustable axial jacking structure is matched with the external material ejecting block, so that the workpiece is restrained and positioned by the flange plate and the material ejecting block when being mounted in place, and the workpiece is clamped under the positioning condition, so that the positioning is accurate and reliable, and the processing precision and the production efficiency are improved;
3. the plug screw is adjustable in axial direction, so that the axial displacement of the flange plate can be finely adjusted as required, namely the magnitude of the jacking force can be adjusted, and the production requirements of different varieties can be met.
Drawings
FIG. 1 is a schematic sectional view of the structure of the present invention, in which the workpiece is attached to the flange plate and the ejector block is not in place yet.
Fig. 2 is a view showing that on the basis of fig. 1, the ejector block is in place and then is matched with the flange plate to restrain the workpiece together, and the workpiece is clamped under a positioning condition at the stage.
Fig. 3 is a schematic cross-sectional view of a workpiece to be machined.
Detailed Description
The invention will be further explained with reference to the drawings and the examples.
Fig. 1 and 2 show an adjustable axial jacking structure arranged in a hollow power chuck, which comprises a cylinder body 3 inserted in an inner hole of the hollow power chuck 6, and a matched flange plate 1, a mandrel 2, a spring 4, a screw plug 5 and a jacking block 8. The barrel 3 is a circular barrel component, the barrel 3 is axially inserted into an inner hole of the hollow power chuck 6, a radial flange at the right end is matched with the outer end face of the chuck 6 and fixedly connected with the outer end face of the chuck 6, the mandrel 2 arranged in the inner cavity of the barrel 3 is sleeved with the spring 4, the screw plug 5 screwed in from the inner hole at the left end of the barrel 3 applies pressure to the spring 4, and therefore the mandrel 2 is formed into an adjusting structure which can axially extend and retract relative to the barrel 3, and the structure can adjust the jacking force as required. The mandrel 2 is a multi-section straight bar shaft, a compression spring 4 is sleeved on the left shaft section, a short conical shaft is arranged on the right shaft section, and the short conical shaft section axially extending out of the orifice at the right end of the barrel 3 is used for positioning and mounting the flange plate 1. The flange plate 1 is used as an elastic support for a workpiece 7 shown in fig. 3, the right end face of the flange plate 1 is a plane, and the circular flange plate 1 axially moves within the clamping range of a clamping jaw of the hollow power chuck 6. To ensure that the workpiece 7 is securely clamped by the hollow power chuck 6, the diameter of the flange 1 must be less than the maximum outer diameter of the workpiece 7, in this embodiment the diameter of the flange 1 is 10mm less than the maximum outer diameter of the workpiece 7. In this situation, as shown in fig. 1, the workpiece 7 is first mounted by contacting the right end face of the flange plate 1, so as to realize initial positioning and mounting. The material pushing block 8 is an accessory component matched with a turret of a numerical control lathe and moves along with the turret. The turret of the commercial numerically controlled lathe is configured with high positioning accuracy, usually with an error of ± 0.005mm, which is much higher than ± 0.03mm required for the workpiece 7 in this embodiment, so it is reasonable to set the ejector block 8 as the positioning reference of the workpiece 7. The initial position of the ejector block 8 shown in fig. 1 is located on the side of the outer end face of the mating hollow power chuck 6, which is on the same axis as the mandrel 2. The left end face of the ejector block 8 is reserved with a distance from the outer end face of the hollow power chuck 6, and the distance is limited to facilitate the loading and unloading of the workpiece 7. When the workpiece 7 is mounted at the initial position, a signal is given to start the turret, and when the turret moves to the position shown in fig. 2, namely the ejector block 8 moves to the final position, which is a position where the workpiece 7 is set to be positioned and clamped, the ejector block 8 and the flange 1 together restrain the workpiece 7 to be positioned, and then clamping is performed by the hollow power chuck 6 under the positioning condition.
The utility model discloses unified use 8 left end faces of liftout piece to install work piece 7 as the location benchmark, because 8 positioning accuracy of liftout piece of numerical control lathe sword tower configuration are high, satisfy the location requirement of work piece 7 completely, in addition ring flange 1 and the cooperation of liftout piece 8 for work piece 7 obtains accurate, reliable, high-efficient location installation, and this situation is favorable to follow-up machine tooling, ensures that the processingquality of work piece 7 is stable.
Claims (3)
1. An adjustable axial jacking clamp arranged in a hollow power chuck comprises a cylinder body (3) inserted in an inner hole of the hollow power chuck (6), and a flange plate (1), a mandrel (2), a spring (4), a screw plug (5) and a jacking block (8) which are matched with each other; the method is characterized in that: the cylinder (3) is positioned on the outer end face of the hollow power chuck (6) in a stopping way by a radial flange at the right end and is fixedly connected, a mandrel (2) arranged in the inner cavity of the cylinder (3) is sleeved with a spring (4), and a screw plug (5) screwed in from an inner hole at the left end of the cylinder (3) applies pressure to the spring (4), so that an adjusting structure for axially stretching the mandrel (2) relative to the cylinder (3) is formed; the right shaft end of the mandrel (2) is a short conical shaft, the short conical shaft axially extends out of the orifice at the right end of the cylinder (3) and is used for positioning and mounting the flange plate (1), and the right end face of the flange plate (1) is supported by the left end face of the workpiece (7); the ejector block (8) is positioned on the opposite side of the outer end face of the matched hollow power chuck and is positioned on the same axis with the mandrel (2), the ejector block (8) moves along with a numerical control lathe turret, and the ejector block (8) moves to the left to the final position to be a positioning reference surface set by the workpiece (7), so that an end face positioning structure for finally positioning the workpiece (7) by the ejector block (8) under the matching of the flange plate (1) is formed.
2. The adjustable axial jacking clamp as claimed in claim 1, disposed within a hollow power chuck, wherein: the right end face of the flange plate (1) is a plane, the circular flange plate (1) can only axially move within the clamping range of the clamping jaw of the chuck (6), and the diameter of the flange plate (1) is at least 10mm smaller than the maximum outer diameter of the workpiece (7).
3. The adjustable axial jacking clamp as claimed in claim 1, disposed within a hollow power chuck, wherein: the spring (4) is a compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921064443.1U CN210548197U (en) | 2019-07-09 | 2019-07-09 | Adjustable axial jacking clamp arranged in hollow power chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921064443.1U CN210548197U (en) | 2019-07-09 | 2019-07-09 | Adjustable axial jacking clamp arranged in hollow power chuck |
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| Publication Number | Publication Date |
|---|---|
| CN210548197U true CN210548197U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921064443.1U Active CN210548197U (en) | 2019-07-09 | 2019-07-09 | Adjustable axial jacking clamp arranged in hollow power chuck |
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| CN (1) | CN210548197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270700A (en) * | 2019-07-09 | 2019-09-24 | 江苏太平洋精锻科技股份有限公司 | The adjustable shaft being placed in hollow power chuck is to holding out against fixture |
-
2019
- 2019-07-09 CN CN201921064443.1U patent/CN210548197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270700A (en) * | 2019-07-09 | 2019-09-24 | 江苏太平洋精锻科技股份有限公司 | The adjustable shaft being placed in hollow power chuck is to holding out against fixture |
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