A thin-walled part fixing device
By designing a fixing device for thin-walled parts and using a combination of a first cylinder and a second cylinder, the problem of easy deformation of thin-walled parts during processing was solved, achieving high-precision and high-efficiency processing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI FENXI HEAVY IND CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-07-14
Smart Images
Figure CN224488365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, and more specifically, to a device for fixing thin-walled parts. Background Technology
[0002] Machining thin-walled parts has always been a challenge in manufacturing, especially thin-walled parts with complex end faces. In existing machining processes, because the wall thickness is only 1.5mm, the thin walls are prone to deformation, easily causing dimensional errors during clamping, thus affecting overall machining quality and workshop production efficiency. Therefore, there is an urgent need for a new device that can improve the machining efficiency and accuracy of thin-walled parts. Utility Model Content
[0003] This utility model provides a thin-walled part fixing device to solve the problem in the prior art that thin-walled parts are easily deformed, which can easily cause dimensional deviations during clamping, thereby affecting the overall processing quality and workshop production efficiency.
[0004] To achieve the above objectives, this utility model provides a thin-walled part fixing device, which includes: a first cylinder and a second cylinder fixedly connected; the first cylinder is used to be loaded into and fixed in a three-jaw chuck of a lathe; the second cylinder is used to fix the part to be processed.
[0005] Optionally, the diameter of the first cylinder is smaller than the diameter of the second cylinder; the diameter of the second cylinder is equal to the diameter of the inner hole of the part to be processed.
[0006] Optionally, the first cylinder is fixed in the three-jaw chuck of the lathe by a three-jaw chuck wrench.
[0007] Optionally, the second cylinder is inserted into the inner hole of the part to be processed, and the second cylinder is fixedly connected to the part to be processed by a plurality of fastening screws.
[0008] Optionally, the part to be processed is a cylindrical structure; the inner hole is provided on the first end face of the part to be processed, and a first circular hole, a second circular hole and a third circular hole are provided on the second end face of the part to be processed; multiple third circular holes are provided; the first circular hole, the second circular hole and the third circular hole are respectively connected to the inner hole.
[0009] Optionally, the plurality of fastening screws are used to pass through the plurality of third circular holes and be fixedly connected to the second cylinder.
[0010] The beneficial effects of this utility model are:
[0011] This invention provides a thin-walled part fixing device and a turning method. The device includes a first cylinder and a second cylinder fixedly connected; the first cylinder is used to be mounted and fixed in the three-jaw chuck of a lathe; the second cylinder is used to fix the part to be machined. This invention, by designing a dedicated thin-walled part fixing device, effectively fixes the part to be machined without damaging it, prevents part deformation, and reduces dimensional deviations caused by part deformation during machining. Attached Figure Description
[0012] Figure 1 This is a side view of a thin-walled part fixing device provided in an embodiment of the present utility model;
[0013] Figure 2 This is a perspective view of the part to be processed provided in an embodiment of this utility model;
[0014] Figure 3 This is a cross-sectional view of the part to be machined after rough machining of the inner hole, provided in this embodiment of the utility model;
[0015] Figure 4 This is a cross-sectional view of the part to be processed after machining a round hole, provided in an embodiment of this utility model;
[0016] Figure 5 This is a cross-sectional view of the workpiece after the inner hole has been finished, according to an embodiment of this utility model.
[0017] Figure 6 This is a cross-sectional view of the part to be processed after turning the outer diameter, as provided in this embodiment of the utility model.
[0018] Symbol explanation:
[0019] First cylinder-1, second cylinder-2, part to be processed-3, inner hole-31, first round hole-32, second round hole-33, third round hole-34. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] Machining thin-walled parts has always been a challenge in manufacturing, especially thin-walled parts with complex end faces. Current machining processes first involve precision machining the inner hole 31 of the part to Φ1060. +0.22At this point, the wall thickness of the part is only 1.5mm. Machining the end face hole of the part further presents challenges due to the thin wall, often resulting in high machining difficulty and low efficiency during the turning process. Furthermore, in the machining center process, the thin-walled parts are prone to deformation, leading to dimensional deviations during clamping, thus affecting the overall machining quality and workshop production efficiency. Therefore, there is an urgent need for a new device and machining method that can improve the machining efficiency and accuracy of thin-walled parts.
[0022] Figure 1 This is a side view of a thin-walled part fixing device provided in an embodiment of the present utility model; Figure 2 This is a perspective view of the part 3 to be processed provided in this embodiment of the utility model; as shown Figure 1 and Figure 2 As shown, the device includes:
[0023] The first cylinder 1 and the second cylinder 2 are fixedly connected;
[0024] The first cylinder 1 is used to be loaded into and fixed in the three-jaw chuck of the lathe; the second cylinder 2 is used to fix the part 3 to be processed.
[0025] In a specific embodiment of this utility model, the first cylinder 1 is Φ100mm and can be installed in the three-jaw chuck of a lathe to ensure that the device is firmly fixed on the lathe. By using a three-jaw chuck wrench to firmly fix the first cylinder 1 in the three-jaw chuck of the lathe, it is ensured that the device will not loosen during the turning process.
[0026] The second cylinder is used to fix the thin-walled part to be processed, ensuring that the part 3 will not move or deform during processing. In a specific embodiment of this invention, the second cylinder 2 is inserted into the inner hole 31 of the part 3 to be processed, and then the second cylinder 2 is fixedly connected to the part 3 to be processed by multiple fastening screws. This design helps to maintain the stability and accuracy of the part 3 to be processed during processing. The diameter of the second cylinder 2 is equal to the diameter of the inner hole 31 of the part 3 to ensure that the part 3 to be processed can be firmly assembled into the device.
[0027] The following is an illustration through a specific example:
[0028] First, the inner hole 31 of the part to be processed 3 is rough machined to Φ96mm, and then the inner hole 31 of the part to be processed 3 is precision machined to Φ106mm. The second cylinder 2 is Φ106mm. At this time, the second cylinder 2 is inserted into the precision machined inner hole 31 of the part to be processed 3, and the two are fixedly connected by multiple fastening screws.
[0029] The diameter of the first cylinder 1 is 100 mm, and the diameter of the second cylinder 2 is 106 mm. The diameter of the first cylinder 1 is smaller than the diameter of the second cylinder 2. The smaller diameter of the first cylinder 1 is suitable for being tightly fixed in the three-jaw chuck of the lathe, while the diameter of the second cylinder 2 is equal to the diameter of the finished inner hole 31 of the workpiece 3, so as to ensure that the workpiece 3 can be firmly assembled into the device.
[0030] In an optional embodiment, the part to be processed 3 is a cylindrical structure; the inner hole 31 is provided on the first end face of the part to be processed 3, and a first circular hole 32, a second circular hole 33, and a third circular hole 34 are provided on the second end face of the part to be processed 3; multiple third circular holes 34 are provided; in a specific embodiment of the present invention, one first circular hole 32 is provided, one second circular hole 33 is also provided, and multiple third circular holes 34 are provided, the present invention provides three; wherein, the first circular hole 32 is... The second circular hole 33 is Φ16.5, and the third circular hole 34 is Φ4.2.
[0031] The first circular hole 32, the second circular hole 33, and the third circular hole 34 are respectively connected to the inner hole 31; the plurality of fastening screws are respectively used to pass through the plurality of third circular holes 34 and be fixedly connected to the second cylinder 2. In a specific embodiment of this utility model, the fastening screws are of type M4, and three fastening screws are provided. The three fastening screws pass through the three third circular holes 34 and are threadedly connected to the second cylinder 2 to ensure stability during the processing.
[0032] The present invention will be described below through a specific implementation process:
[0033] S1. Clamp the outer circle of the part to be processed 3, flatten the first end face of the part to be processed 3, and machine an inner hole 31 of the first diameter from the first end face of the part to be processed 3; turn the part to be processed 3 around and flatten the second end face of the part to be processed 3.
[0034] Figure 3 This is a cross-sectional view of the part 3 to be processed after rough machining of the inner hole 31, as provided in this embodiment of the utility model; Figure 3 As shown, the rough-machined inner hole 31 refers to the inner hole 31 with the first diameter machined out.
[0035] In one specific embodiment of this utility model, the inner hole 31 is Φ96mm; the diameter of the inner hole 31 is machined to 96mm.
[0036] S2. Machine the first circular hole 32, the second circular hole 33 and the third circular hole 34 on the second end face of the part to be machined 3;
[0037] Figure 4 This is a cross-sectional view of the part to be processed after turning the round hole in the 3rd machining stage, as provided in this embodiment of the utility model; Figure 4 As shown,
[0038] In one specific embodiment, the first circular hole 32 is configured as one, and the size of the first circular hole 32 is [missing information]. This indicates that the aperture is 96mm, with an upper deviation of +0.19mm and a lower deviation of 0mm. There is one second circular hole 33, with a size of Φ16.5mm, indicating a aperture of 16.5mm. There are three third circular holes 34, each with a size of Φ4.2mm, indicating that there are three holes with a diameter of 4.2mm on the second end face.
[0039] S3. The inner hole 31 of the part to be machined 3 is precision machined so that the diameter of the inner hole 31 becomes a second diameter; wherein the second diameter is larger than the first diameter;
[0040] Figure 5 This is a cross-sectional view of the workpiece 3 after the inner hole 31 has been finished, as provided in this embodiment of the utility model; Figure 5 As shown,
[0041] In one specific embodiment, the second diameter is This refers to precision machining the diameter of the inner hole 31 to 106mm, with an upper deviation of +0.22mm and a lower deviation of 0mm.
[0042] S4. Fix the part to be processed 3 using the thin-walled part fixing device, and machine the outer circle of the part to be processed 3.
[0043] Figure 6 This is a cross-sectional view of the workpiece 3 after its outer diameter has been turned, as provided in this embodiment of the present invention; Figure 6 As shown,
[0044] The step of fixing the part 3 to be processed by the thin-walled part fixing device includes:
[0045] The second cylinder 2 of the thin-walled part fixing device is inserted into the inner hole 31 of the part to be processed 3 after precision machining;
[0046] Multiple fastening screws are passed through multiple third circular holes 34 one by one and fixedly connected to the second cylinder 2.
[0047] In one specific embodiment, the first cylinder 1 (with a diameter of 100 mm) of the thin-walled part fixing device is inserted into the three-jaw chuck of the lathe, and the three-jaw chuck is tightened using a special three-jaw chuck wrench, so that the thin-walled part fixing device is firmly fixed on the lathe. The tightening process needs to ensure that the device is secure and will not loosen or shift during machining.
[0048] The second cylinder 2 (with a diameter of 106 mm) of the thin-walled part fixing device is inserted into the inner hole 31 (which is precision-machined) of the part to be processed 3. In the process, the inner hole 31 of the workpiece 3 after precision turning matches the second cylinder 2, thereby achieving a tight clamping. After the workpiece 3 is installed, it is gently rotated so that the third circular hole 34 of the workpiece 3 is aligned with the threaded hole of the second cylinder 2. There are three third circular holes 34 (3-Φ4.2) with a diameter of 4.2mm on the end face of the workpiece 3, which need to be aligned with the three M4 threaded holes (3-M4) on the second cylinder 2. The three fastening screws are passed through the 3-Φ4.2 third circular holes 34 of the workpiece 3 and screwed into the 3-M4 threaded holes of the second cylinder 2 of the device. The workpiece 3 is fixed on the second cylinder 2 of the device with the fastening screws to ensure that the workpiece 3 will not loosen or move in subsequent processing.
[0049] After all clamping steps are completed, start the lathe to prepare for turning and complete the turning of the outer diameter. The turning process involves machining the outer diameter of part 3 to 109 mm, with tolerances controlled between -0.18 mm and -0.4 mm. This means the final outer diameter should be between 108.6 mm and 108.82 mm. During turning, surface finish and dimensional accuracy must be ensured to avoid excessive errors.
[0050] Following S4, the following is also included:
[0051] After the outer diameter of part 3 is turned, the machined part is removed from the thin-walled part fixing device.
[0052] In an optional embodiment, after the outer diameter of the part 3 to be processed is successfully turned, the fastening screws previously used to fix the part 3 to be processed are loosened and removed one by one using a suitable tool (such as a screwdriver or wrench); after all the fastening screws are unscrewed, the part is gently removed from the thin-walled part fixing device. Since the outer diameter of the part has been precisely machined to the design dimensions, it should be handled carefully when removing it to avoid bumping or damaging the machined surface.
[0053] The beneficial effects of this utility model are:
[0054] (1) Improve machining accuracy: This utility model effectively fixes the part to be processed 3 by designing a special thin-walled part fixing device, which reduces the problem of dimensional deviation caused by part deformation during the machining process. Especially in precision machining, it can significantly improve machining accuracy and ensure the final quality of the part.
[0055] (2) Enhanced processing stability: By inserting the second cylinder 2 into the inner hole 31 of the part to be processed 3 and fixing the part with multiple fastening screws, the stability of the part during the processing is greatly improved, and processing errors caused by vibration or loosening are avoided.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A thin-walled part fixing device, characterized in that, include: A first cylinder and a second cylinder are fixedly connected; The first cylinder is used to be loaded into and fixed in the three-jaw chuck of the lathe; the second cylinder is used to fix the part to be processed. The second cylinder is inserted into the inner hole of the part to be processed, and the second cylinder is fixedly connected to the part to be processed by multiple fastening screws.
2. The apparatus according to claim 1, characterized in that: The diameter of the first cylinder is smaller than the diameter of the second cylinder; The diameter of the second cylinder is equal to the diameter of the inner hole of the part to be processed.
3. The apparatus according to claim 2, characterized in that: The first cylinder is fixed in the three-jaw chuck of the lathe by a three-jaw chuck wrench.