CN216325429U - Milling fixture for improving frame clamping, positioning and aligning efficiency - Google Patents
Milling fixture for improving frame clamping, positioning and aligning efficiency Download PDFInfo
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- CN216325429U CN216325429U CN202122807641.6U CN202122807641U CN216325429U CN 216325429 U CN216325429 U CN 216325429U CN 202122807641 U CN202122807641 U CN 202122807641U CN 216325429 U CN216325429 U CN 216325429U
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Abstract
The utility model provides a milling clamp for improving the clamping, positioning and aligning efficiency of a frame. This anchor clamps adopts two holes one side location mode to the support post high accuracy plane of installing at the base member plane is as the plane benchmark of frame, regards detachable dabber step platform as the hole location benchmark of frame, regards the locating pin as the turned angle location benchmark of frame, uses the clamp plate to compress tightly the back with the frame, locks the clamp plate with fastening nut, realizes the high accuracy location to the frame. The fixture is simple in structure, convenient to manufacture and disassemble, capable of quickly completing positioning and alignment of various frame clamping, capable of realizing quick production change of frames with various sizes, and low in cost.
Description
Technical Field
The utility model belongs to the technical field of cutting machining, and particularly relates to a milling clamp for improving the clamping, positioning and aligning efficiency of a frame.
Background
The precision frame type workpiece needs to be limited and aligned in multiple directions in the machining process, the traditional clamping mode is usually fixed on an operation table top of a machining center, the position of a pressing plate is repeatedly adjusted, and the pressing plate is measured by a meter to be positioned and aligned, so that the time consumption is long, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a milling fixture for improving the clamping, positioning and aligning efficiency of a frame, and aims to solve the technical problem of how to improve the clamping, positioning and aligning efficiency of the frame.
(II) technical scheme
In order to solve the technical problem, the utility model provides a milling clamp for improving the clamping, positioning and aligning efficiency of a frame, which comprises a clamp base body, a support column, a mandrel step, a pressure plate, a fastening nut, a stud and a positioning pin; the center of the upper surface of the clamp base body is provided with a threaded hole and a mandrel positioning hole which are coaxial, and the stud is screwed into the threaded hole through the bottom end thread and then is fixedly connected with the base body; the mandrel step is sleeved in the stud through the central hole, the small-diameter end of the mandrel step is inserted into the mandrel positioning hole of the clamp base body in a clearance fit mode, and the large-diameter end of the mandrel step is used for positioning an inner hole of a frame to be processed; support column positioning holes are uniformly machined in the outer side of the upper surface mandrel positioning hole of the clamp base body, and the lower ends of the support columns are inserted into the support column positioning holes in a clearance fit mode and used for providing a plane reference for a frame to be machined; the pressing plate is sleeved from the top end of the stud, a fastening nut is screwed into the upper end of the pressing plate, and the pressing plate is used for matching with the support column to provide an end face reference for the frame to be processed and axially compressing and limiting the frame to be processed; the upper surface of the clamp base body is provided with a positioning pin hole, the lower end of the positioning pin is inserted into the positioning pin hole in a clearance fit mode, and the upper end of the positioning pin is inserted into the frame to be processed and used for positioning the rotating angle of the frame to be processed.
Further, the inner diameter of the mandrel positioning hole is larger than the threaded hole but the depth of the mandrel positioning hole is smaller than the threaded hole.
Furthermore, three support column positioning holes are uniformly distributed on the outer side of the upper surface mandrel positioning hole of the clamp base body.
Furthermore, two positioning pin holes which are positioned at different angles are machined in the upper surface of the clamp base body.
(III) advantageous effects
The utility model provides a milling clamp for improving the clamping, positioning and aligning efficiency of a frame. This anchor clamps adopts two holes one side location mode to the support post high accuracy plane of installing at the base member plane is as the plane benchmark of frame, regards detachable dabber step platform as the hole location benchmark of frame, regards the locating pin as the turned angle location benchmark of frame, uses the clamp plate to compress tightly the back with the frame, locks the clamp plate with fastening nut, realizes the high accuracy location to the frame. The fixture is simple in structure, convenient to manufacture and disassemble, capable of quickly completing positioning and alignment of various frame clamping, capable of realizing quick production change of frames with various sizes, and low in cost.
Drawings
FIG. 1 is a front view of a milling fixture according to an embodiment of the present invention;
FIG. 2 is a front cross-sectional view of a milling fixture in accordance with an embodiment of the present invention;
FIG. 3 is a top view of a fixture base in an embodiment of the utility model.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides a milling fixture for improving the clamping, positioning and aligning efficiency of a frame, which has a structure shown in fig. 1 and 2 and comprises a fixture base body 1, a support column 2, a detachable mandrel step 3, a pressing plate 4, a fastening nut 5, a stud 6 and a detachable positioning pin 7.
The center of the upper surface of the clamp base body 1 is provided with a threaded hole and a mandrel positioning hole which are coaxial, and the inner diameter of the mandrel positioning hole is larger than that of the threaded hole but the depth of the mandrel positioning hole is smaller than that of the threaded hole.
The stud 6 is screwed into the threaded hole through the bottom end thread and then is tightly connected with the base body 1. The mandrel step 3 is sleeved into the stud 6 through a central hole, and the small-diameter end of the mandrel step 3 is inserted into the mandrel positioning hole of the clamp base body 1 in a clearance fit mode. The large diameter end of the mandrel step 3 is used to locate the inner bore of the frame 8 to be machined.
Three support column positioning holes are uniformly distributed on the outer side of the upper surface mandrel positioning hole of the fixture base body 1, and the lower ends of the three support columns 2 are inserted into the support column positioning holes in a clearance fit mode and used for providing a plane reference for a frame 8 to be processed.
The pressing plate 4 is sleeved by the top end of the stud 6, and a fastening nut 5 is screwed into the upper end of the pressing plate 4. The pressing plate 4 is used for matching with the supporting column 2 on the clamp base body 1 to serve as an end face reference, and the frame 8 to be processed is axially pressed and limited.
According to the size of a frame 8 to be processed, two positioning pin holes are further processed on the upper surface of the clamp base body 1, the lower ends of the positioning pins 7 are inserted into the positioning pin holes in proper positions in a clearance fit mode, and the upper ends of the positioning pins are inserted into the frame 8 and used for positioning the rotation angle of the frame 8.
The clamp adopts a two-hole one-surface positioning mode, the high-precision plane of three support columns 2 arranged on the plane of a base body 1 is used as the plane reference of a frame 8, a detachable mandrel step 3 is used as the inner hole positioning reference of the frame 8, a positioning pin 7 is used as the rotation angle positioning reference of the frame 8, the frame 8 is tightly pressed by a pressing plate 4, and the pressing plate 4 is locked by a fastening nut 5, so that the high-precision positioning of the frame 8 is realized.
The fixture can quickly and accurately determine the center and the position of a part, so that the origin of coordinates can be conveniently established, the positioning and alignment of various frame clamping can be quickly completed, the adjusting preparation time in the clamping process is greatly reduced, the labor intensity is greatly reduced, the rapid production change of frames with various sizes is realized, and the production efficiency is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A milling clamp for improving the clamping, positioning and aligning efficiency of a frame is characterized by comprising a clamp base body, a support column, a mandrel step, a pressing plate, a fastening nut, a stud and a positioning pin; the center of the upper surface of the clamp base body is provided with a threaded hole and a mandrel positioning hole which are coaxial, and the stud is screwed into the threaded hole through the bottom end thread and then is fixedly connected with the base body; the mandrel step is sleeved in the stud through the central hole, the small-diameter end of the mandrel step is inserted into the mandrel positioning hole of the clamp base body in a clearance fit mode, and the large-diameter end of the mandrel step is used for positioning an inner hole of a frame to be processed; support column positioning holes are uniformly machined in the outer side of the upper surface mandrel positioning hole of the clamp base body, and the lower ends of the support columns are inserted into the support column positioning holes in a clearance fit mode and used for providing a plane reference for a frame to be machined; the pressing plate is sleeved from the top end of the stud, a fastening nut is screwed into the upper end of the pressing plate, and the pressing plate is used for matching with the support column to provide an end face reference for the frame to be processed and axially compressing and limiting the frame to be processed; the upper surface of the clamp base body is provided with a positioning pin hole, the lower end of the positioning pin is inserted into the positioning pin hole in a clearance fit mode, and the upper end of the positioning pin is inserted into the frame to be processed and used for positioning the rotating angle of the frame to be processed.
2. The milling fixture of claim 1, wherein the mandrel locating bore has an inner diameter greater than the threaded bore but a depth less than the threaded bore.
3. The milling fixture of claim 1, wherein three support post locating holes are evenly distributed outside the upper surface spindle locating hole of the fixture base body.
4. The milling fixture of claim 1, wherein the upper surface of the fixture base is machined with two dowel pin holes at different angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122807641.6U CN216325429U (en) | 2021-11-16 | 2021-11-16 | Milling fixture for improving frame clamping, positioning and aligning efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122807641.6U CN216325429U (en) | 2021-11-16 | 2021-11-16 | Milling fixture for improving frame clamping, positioning and aligning efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216325429U true CN216325429U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122807641.6U Active CN216325429U (en) | 2021-11-16 | 2021-11-16 | Milling fixture for improving frame clamping, positioning and aligning efficiency |
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| CN (1) | CN216325429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054826A (en) * | 2021-11-16 | 2022-02-18 | 北京北方车辆集团有限公司 | Milling fixture for improving frame clamping, positioning and aligning efficiency |
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2021
- 2021-11-16 CN CN202122807641.6U patent/CN216325429U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054826A (en) * | 2021-11-16 | 2022-02-18 | 北京北方车辆集团有限公司 | Milling fixture for improving frame clamping, positioning and aligning efficiency |
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