CN221312508U - Lathe quick-change positioning fixture for small-hole thin-wall part - Google Patents
Lathe quick-change positioning fixture for small-hole thin-wall part Download PDFInfo
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- CN221312508U CN221312508U CN202322579485.1U CN202322579485U CN221312508U CN 221312508 U CN221312508 U CN 221312508U CN 202322579485 U CN202322579485 U CN 202322579485U CN 221312508 U CN221312508 U CN 221312508U
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- 230000000903 blocking effect Effects 0.000 claims description 49
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QNHZQZQTTIYAQM-UHFFFAOYSA-N chromium tungsten Chemical compound [Cr][W] QNHZQZQTTIYAQM-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a lathe quick-change positioning fixture for a small-hole thin-wall part, which comprises: the three-jaw chuck comprises a main body, wherein one end of the main body is fixedly arranged on the three-jaw chuck, a through hole is formed in the main body, and a conical hole is formed in one end of the through hole; the fixing piece is provided with a threaded hole in the center, and uniformly distributed connecting holes are formed in the center of the fixing piece along the upper edge of the fixing piece; the outer surface of the pull rod is provided with external threads matched with the threaded holes, one end of the pull rod is provided with a conical head, and the conical head is matched with the conical surface holes. The utility model provides a lathe quick-change positioning clamp for a small-hole thin-wall part, which can quickly fix the small-hole thin-wall part through the matching of a clamping part on a main body and a conical head on a pull rod, so that the workpiece can be clamped conveniently; the three-jaw chuck is simple in structure, can be directly arranged on the three-jaw chuck, is quickly and stably connected, reduces the time for replacing the clamp, and improves the production efficiency.
Description
Technical Field
The utility model belongs to the technical field of tools, and particularly relates to a lathe quick-change positioning fixture for a small-hole thin-wall part.
Background
In turning, the three-jaw chuck is the most common clamping mode, uses three claws to clamp the outer diameter of a part, and has the characteristics of quick centering, stable and adjustable clamping force and high working efficiency.
The small-hole thin-wall part is a cylindrical part with smaller inner hole size and thinner wall thickness, and the outer diameter of the small-hole thin-wall part is often required to be turned in the machining process. Because the inner hole is small in size and thin in wall thickness, a common three-jaw chuck is used for clamping and turning, and a part is easy to deform during clamping and turning, the inner hole of the thin-walled part with the small hole is generally turned in a mode of expanding.
In the prior art, the installation of the clamp for positioning and clamping the inner hole of the small-hole thin-wall part is complicated, such as an inner hole positioning clamp disclosed in Chinese patent publication CN 203579229U, and the workpiece is clamped and fixed through the expansion of the expansion core. However, the fixture needs to be integrally replaced when being installed, the fixture needs to be integrally installed and aligned when being replaced each time, more procedures are generally carried out in the actual production process, and the production efficiency is greatly reduced when the fixture is frequently replaced.
Disclosure of utility model
The utility model aims to provide a lathe quick-change positioning clamp for a small-hole thin-wall part, which solves the problems that the clamp is inconvenient to install and the production efficiency is affected.
Therefore, the utility model provides a lathe quick-change positioning fixture for a small-hole thin-wall part, which comprises: the three-jaw chuck comprises a main body, wherein one end of the main body is fixedly arranged on the three-jaw chuck, a through hole is formed in the main body, and a conical hole is formed in one end of the through hole; the fixing piece is provided with a threaded hole in the center, uniformly distributed connecting holes are formed in the center of the fixing piece along the fixing piece, and the fixing piece is installed inside the three-jaw chuck through bolts penetrating through the connecting holes; the pull rod, the pull rod surface is provided with the external screw thread, the screw hole cooperation on pull rod and the stationary blade is connected, the pull rod is inside the main part, pull rod one end is provided with the conical head, conical head and conical surface hole cooperate.
Preferably, the main body is provided with a fixing part, a first blocking part, a connecting part, a second blocking part and a clamping part in sequence according to the axial direction of the main body, wherein the fixing part, the first blocking part, the connecting part, the second blocking part and the clamping part are all cylinders and the central axes are all on the same straight line.
Preferably, the outer diameter of the fixing part is matched with the inner diameter of the three-jaw chuck.
Preferably, the first blocking portion is provided with a positioning hole. The positioning hole is used for being fixedly connected with the three-jaw chuck.
Preferably, three uniformly distributed planes with the same size are arranged on the circumferential surface of the first blocking part. Three claws of the three-claw chuck clamp three planes on the circumferential surface of the first blocking part, so that the connection stability is enhanced.
Preferably, the conical surface hole is arranged inside the clamping part, a plurality of uniformly distributed strip-shaped grooves are formed in the clamping part, and the strip-shaped grooves are parallel to the central axis of the clamping part. After the conical head of the pull rod enters the conical surface hole, the clamping part can be opened from the strip-shaped groove to expand the inner hole of the workpiece.
Further preferably, the material of the clamping part is one of manganese silicon steel, tungsten chromium steel and nickel chromium steel, and has better elasticity and toughness.
Further preferably, the number of the strip-shaped grooves is 3-6.
Preferably, the thickness of the wall of the clamping part is 2-4mm.
Preferably, the outer diameter of the first blocking part is larger than the outer diameter of the fixing part, the outer diameter of the second blocking part is larger than the outer diameters of the connecting part and the clamping part, and the outer diameter of the first blocking part is larger than the outer diameter of the second blocking part. The second blocking portion is used for positioning the end face of the part.
Preferably, the outer diameter of the second blocking part is smaller than the outer diameter of the processed small-hole thin-wall part. The second blocking part, the connecting part and the clamping part are matched, so that the small-hole thin-wall part can be fixed on the clamping part, the outer diameter of the small-hole thin-wall part is completely turned, and the turning tool cannot interfere with the clamp during turning.
The beneficial effects are that:
1. The utility model provides a lathe quick-change positioning clamp for a small-hole thin-wall part, which can quickly fix the small-hole thin-wall part through the matching of a clamping part on a main body and a conical head on a pull rod, so that the workpiece can be clamped conveniently; the three-jaw chuck is simple in structure, can be directly arranged on the three-jaw chuck, is quickly and stably connected, reduces the time for replacing the clamp, and improves the production efficiency.
2. In the actual machining process, there are usually many processes for machining a workpiece, and the processes for machining using the three-jaw chuck are most. In the prior art, the lathe positioning fixture of the small-hole thin-wall part needs to be integrally replaced when being installed, the three-jaw chuck and the lathe positioning fixture of the small-hole thin-wall part need to be frequently replaced, each time of replacement needs to be installed and aligned for a long time, and the service life of the fixture is also affected due to multiple installation. The utility model provides a lathe quick-change positioning clamp for a small-hole thin-wall part, which can be directly arranged on a three-jaw chuck, a fixing part is matched with an inner hole of the three-jaw chuck, the end face of a first blocking part is attached to the three-jaw chuck for limiting, and a main body is fixed on the three-jaw chuck. The three clamping jaws of the three-jaw chuck clamp the three planes of the first blocking part, so that the stability of clamping is further improved. The three-jaw chuck does not need to be disassembled during installation, has good adaptability with the three-jaw chuck, is rapid and stable in installation, greatly shortens the non-processing time, and improves the production efficiency.
3. The thin-walled part of the small hole has thinner wall thickness, smaller aperture and difficult positioning. The utility model utilizes the conical surface hole in the clamping part to be matched with the conical head of the pull rod, the clamping part is spread along the strip-shaped groove, and the small-hole thin-wall part is tightly expanded and fixed. The clamping force is even, the contact surface is larger, and the workpiece is not easy to deform during turning.
4. The outer diameter of the second blocking part is smaller than that of the small-hole thin-wall part, and the outer diameter of the connecting part is smaller than that of the second blocking part. When the small-hole thin-wall piece is clamped on the clamping part for turning, the outer surface of the workpiece can be turned at one time, and the turning tool cannot interfere with the clamp.
5. The connecting portion can also be used for alignment when the main part is installed on the three-jaw chuck, because the clamping portion is provided with the strip-shaped groove, the alignment effect can be influenced because the clamping portion is provided with the strip-shaped groove during alignment, and the alignment is more convenient to perform on the connecting portion.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of a lathe quick-change positioning fixture for a small-hole thin-wall part.
Fig. 2 is a cross-sectional view of an embodiment of a lathe quick-change positioning fixture for a small-hole thin-wall piece provided by the utility model.
Fig. 3 is a front view of a main body of an embodiment of a lathe quick-change positioning fixture for a small-hole thin-wall piece provided by the utility model.
Fig. 4 is a schematic diagram of an embodiment of a lathe quick-change positioning fixture for a small-hole thin-wall piece provided by the utility model, which is installed on a three-jaw chuck.
Fig. 5 is a cross-sectional view of an embodiment of a lathe quick-change positioning fixture for a small-hole thin-walled workpiece, provided by the utility model, mounted on a three-jaw chuck.
In the figure: the device comprises a main body, a conical hole, a fixing part, a first blocking part, a connecting part, a second blocking part, a clamping part, a plane 17, a positioning hole 18, a strip-shaped groove 19, a fixing piece 2, a threaded hole 21, a connecting hole 22, a pull rod 3 and a conical head 31.
Detailed Description
The contents of the present utility model can be more easily understood by referring to the following detailed description of preferred embodiments of the present utility model and examples included. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. In case of conflict, the present specification, definitions, will control.
Example 1:
The lathe quick-change positioning clamp for the small-hole thin-wall piece shown in the figures 1-3 can be used for quickly fixing the small-hole thin-wall piece, so that the workpiece can be clamped conveniently; the three-jaw chuck is simple in structure, can be directly arranged on the three-jaw chuck, is quickly and stably connected, reduces the time for replacing the clamp, and improves the production efficiency.
A lathe quick change positioning fixture of a small hole thin wall part comprises: the three-jaw chuck comprises a main body 1, wherein one end of the main body 1 is fixedly arranged on the three-jaw chuck, a through hole is formed in the main body 1, and a conical surface hole 11 is formed in one end of the through hole; the three-jaw chuck comprises a fixing piece 2, wherein a threaded hole 21 is formed in the center of the fixing piece 2, uniformly distributed connecting holes 22 are formed in the center of the fixing piece 2 along the fixing piece 2, and the fixing piece 2 is installed inside the three-jaw chuck through bolts penetrating through the connecting holes 22; the pull rod 3, pull rod 3 surface is provided with the external screw thread with screw hole 21 matched with, and pull rod 3 is inside the main part, and pull rod 3 one end is provided with conical head 31, and conical head 31 cooperatees with conical surface hole 11.
The main body 1 is provided with a fixing part 12, a first blocking part 13, a connecting part 14, a second blocking part 15 and a clamping part 16 in sequence along the axial direction of the main body 1, wherein the fixing part 12, the first blocking part 13, the connecting part 14, the second blocking part 15 and the clamping part 16 are all cylinders, and the central axes of the two parts are all on the same straight line. The outer diameter of the fixing part 12 is matched with the inner diameter of the three-jaw chuck, so that the main body 1 is inserted into the inner hole of the three-jaw chuck to be fixed. The first blocking portion 13 is provided with a positioning hole 18, and the positioning hole 18 is used for being fixedly connected with the three-jaw chuck to fix the first blocking portion 13 on the three-jaw chuck. The first blocking part 13 is provided with three evenly distributed planes 17 with the same size on the circumferential surface. The three jaws of the three-jaw chuck clamp the three planes 17 on the circumferential surface of the first blocking portion 13, so that the connection stability is enhanced.
The conical surface hole 11 is arranged in the clamping part 16, a plurality of uniformly distributed strip-shaped grooves 19 are formed in the clamping part 16, the strip-shaped grooves 19 are parallel to the central axis of the clamping part 16, the number of the strip-shaped grooves 19 is 3, and the wall thickness range of the clamping part 16 is 2-4mm. After the conical head 31 of the pull rod 3 enters the conical surface hole 11, the clamping part 16 is opened from the strip-shaped groove 19, and the inner hole of the workpiece is expanded. The clamping part 16 is made of tungsten-chromium steel, and has good elasticity and toughness.
The outer diameter of the first blocking part 13 is larger than that of the fixing part 12, the outer diameter of the second blocking part 15 is larger than that of the connecting part 14 and the clamping part 16, the outer diameter of the first blocking part 13 is larger than that of the second blocking part 15, and the outer diameter of the second blocking part 15 is smaller than that of the machined small-hole thin-walled part. The second blocking part 15 is used for positioning the end face of the part, the second blocking part 15, the connecting part 14 and the clamping part 16 are matched, the small-hole thin-wall part can be fixed on the clamping part 16, the outer diameter of the small-hole thin-wall part is completely turned, and the turning tool cannot interfere with the clamp during turning.
Working principle: as shown in fig. 4-5, the bolt is used to pass through the connecting hole 22 of the fixing piece 2, the fixing piece 2 is fixed in the inner hole of the three-jaw chuck, then the fixing part 12 of the main body 1 is inserted into the inner hole of the three-jaw chuck, the bolt is used to pass through the positioning hole 18 on the first blocking part 13, the first blocking part 13 is fixed on the three-jaw chuck, the three clamping jaws of the three-jaw chuck are adjusted, and the clamping jaws are clamped on the three planes 17 on the circumference of the first blocking part 13, so that the fixing stability is further enhanced. The tie rod 3 is then passed through the body 1 and connected to the threaded hole 21 of the fixing piece 2, and the clamp is installed.
When the thin-walled workpiece turning tool is used, the hole of the thin-walled workpiece is sleeved on the clamping part 16, the second clamping part 16 limits the end face of the thin-walled workpiece, the pull rod 3 is adjusted to rotate, the conical head 31 on the pull rod 3 is screwed into the conical surface hole 11 of the clamping part 16, and the clamping part 16 is spread along the strip-shaped groove 19, so that the thin-walled workpiece is clamped, the clamping force is uniform, the contact surface is larger, and the workpiece is not easy to deform during turning. The outer diameter of the small-hole thin-wall piece is larger than that of the second clamping part 16, and when in turning, the outer surface of the workpiece can be turned at one time, and the turning tool cannot interfere with the clamp.
The foregoing examples are illustrative only and serve to explain some features of the method of the utility model. The appended claims are intended to claim the broadest possible scope and the embodiments presented herein are merely illustrative of selected implementations based on combinations of all possible embodiments. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the utility model. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges should also be construed as being covered by the appended claims where possible.
Claims (9)
1. A lathe quick change positioning fixture of aperture thin wall spare, its characterized in that includes:
The three-jaw chuck comprises a main body, wherein one end of the main body is fixedly arranged on the three-jaw chuck, a through hole is formed in the main body, and a conical hole is formed in one end of the through hole;
The fixing piece is provided with a threaded hole in the center, uniformly distributed connecting holes are formed in the center of the fixing piece along the fixing piece, and the fixing piece is installed inside the three-jaw chuck through bolts penetrating through the connecting holes;
The pull rod, the pull rod surface is provided with the external screw thread, the screw hole cooperation on pull rod and the stationary blade is connected, the pull rod is inside the main part, pull rod one end is provided with the conical head, conical head and conical surface hole cooperate.
2. The lathe quick-change positioning fixture for the small-hole thin-wall piece according to claim 1, wherein the main body is sequentially provided with a fixing part, a first blocking part, a connecting part, a second blocking part and a clamping part in the axial direction of the main body, and the fixing part, the first blocking part, the connecting part, the second blocking part and the clamping part are all cylinders and the central axes are all on the same straight line.
3. The quick-change positioning fixture for a lathe for a small-hole thin-walled workpiece according to claim 2, wherein the outer diameter of the fixing part is matched with the inner diameter of the three-jaw chuck.
4. The quick-change positioning fixture for a lathe of a small-hole thin-wall piece according to claim 2, wherein the first blocking portion is provided with a positioning hole.
5. The lathe quick-change positioning fixture for small-hole thin-wall parts according to claim 2, wherein three uniformly-distributed planes with the same size are arranged on the circumferential surface of the first blocking part.
6. The quick-change positioning fixture for the lathe of the small-hole thin-wall piece according to claim 2, wherein the conical surface hole is formed in the clamping portion, a plurality of uniformly distributed strip-shaped grooves are formed in the clamping portion, and the strip-shaped grooves are parallel to the central axis of the clamping portion.
7. The quick-change positioning fixture for a lathe for a small-hole thin-wall piece according to claim 6, wherein the thickness of the clamping portion is 2-4mm.
8. The quick-change positioning fixture for the lathe of the small-hole thin-wall piece according to claim 2, wherein the outer diameter of the first blocking portion is larger than the outer diameter of the fixing portion, the outer diameter of the second blocking portion is larger than the outer diameters of the connecting portion and the clamping portion, and the outer diameter of the first blocking portion is larger than the outer diameter of the second blocking portion.
9. The quick change positioning jig for a lathe of a thin-walled small-bore workpiece as set forth in claim 8, wherein the second blocking portion has an outer diameter smaller than an outer diameter of the thin-walled small-bore workpiece being machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322579485.1U CN221312508U (en) | 2023-09-22 | 2023-09-22 | Lathe quick-change positioning fixture for small-hole thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322579485.1U CN221312508U (en) | 2023-09-22 | 2023-09-22 | Lathe quick-change positioning fixture for small-hole thin-wall part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221312508U true CN221312508U (en) | 2024-07-12 |
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ID=91805941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322579485.1U Active CN221312508U (en) | 2023-09-22 | 2023-09-22 | Lathe quick-change positioning fixture for small-hole thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221312508U (en) |
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2023
- 2023-09-22 CN CN202322579485.1U patent/CN221312508U/en active Active
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