Clamp for cantilever thin-wall part and machine tool with same
By designing a fixture for cantilever thin-walled parts and providing an adjustable support component, the deformation problem of cantilever thin-walled parts during processing is solved, the processing quality and efficiency are improved, the production cost is reduced, and it is suitable for large-scale production.
Patent Information
- Application Number
- CN202422990457.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Cantilever thin-walled parts are deformed due to poor rigidity during machining. Traditional clamping and positioning methods are cumbersome, inefficient, and result in large machining errors.
A fixture including a fixture base, a clamping assembly and an adjustable support assembly is designed. The adjustable support assembly provides support for the second annular seat, eliminates deformation of the cantilever part, and reduces the tedious process caused by repeated benchmark repair.
It improves the processing quality and efficiency of cantilever thin-walled parts, reduces production cycle and cost, and is suitable for large-scale production.
Smart Images
Figure CN223455536U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamp for cantilever thin-wall parts and a machine tool with the clamp. Background Art
[0002] Cantilever thin-walled parts are parts with thin-walled structures. Figure 1 and Figure 4 As shown, the cantilever thin-walled part 4 includes a first annular seat 41, a second annular seat 42 coaxial with the first annular seat 41, and a cantilever portion 43 connecting the first annular seat 41 and the second annular seat 42, wherein the diameter of the first annular seat 41 is approximately 200 mm, the diameter of the second annular seat 42 is approximately 150 mm, and the thickness of the cantilever portion 43, the first annular seat 41 and the second annular seat 42 is approximately 5 to 10 mm.
[0003] Since the cantilever thin-walled part 4 has a thin-wall structure with a thickness of about 5 to 10 mm, its rigidity is poor. During the processing of the second annular seat 42 (drilling a hole on the end face of the second annular seat), the thin-walled structure of the cantilever portion 43 and the second annular seat 42 is easily deformed.
[0004] In the traditional processing of cantilever thin-walled parts, the cantilever thin-walled parts need to be repeatedly clamped and positioned. Repeated clamping and positioning will increase the error, the parts are easily deformed during clamping, the processing procedures are cumbersome, and the efficiency is low. Utility Model Content
[0005] In view of this, the utility model provides a fixture for cantilever thin-walled parts, the cantilever thin-walled parts including a first annular seat, a second annular seat coaxial with the first annular seat, and a cantilever portion connecting the first annular seat and the second annular seat, the fixture including: a fixture base on which the first annular seat is placed; a clamping assembly, which is used to clamp the first annular seat and is detachably fixed to the fixture base; and an adjustable support assembly, which is used to support the second annular seat and is adjustably fixed to the fixture base, wherein the adjustable support assembly includes: an adjusting cylinder, which is fixed to the fixture base; an adjusting rod, which is inserted into the adjusting cylinder; an adjusting member, which is connected to the adjusting cylinder and the adjusting rod, and is used to adjust the position of the adjusting rod relative to the adjusting cylinder in a direction parallel to the axial direction of the first annular seat and the second annular seat; and a fixing member, which is used to fix the adjusting rod in the adjusting cylinder.
[0006] Through the above setting, the second annular seat can be supported, the deformation at the cantilever part caused by poor rigidity of the cantilever thin-wall part during milling is eliminated, the problems of long process flow, complicated processing and the like caused by repeated reference correction in the traditional process are reduced, the processing quality and processing efficiency of the cantilever thin-wall part are improved, the production cycle and processing cost are reduced, and the device is suitable for large-scale production and processing.
[0007] Preferably, the adjusting member comprises a first thread and a second thread connected with the adjusting cylinder and the adjusting rod respectively, and the first thread is screwed with the second thread.
[0008] Through the above setting, the cantilever thin-wall part of different sizes can be adapted to, so as to be applied to more processing scenes of the cantilever thin-wall part.
[0009] Preferably, the fixing member is a nut which is screwed with the first thread of the adjusting rod.
[0010] Through the above setting, the adjusting rod can be fixed in the adjusting cylinder in a simple way.
[0011] Preferably, the adjusting cylinder and the adjusting rod are respectively provided with a fixing through hole, and the fixing member penetrates through the fixing through hole.
[0012] Preferably, the pressing assembly comprises a pressing plate and an adjusting screw, the pressing plate is provided with an adjusting through hole, and the adjusting screw penetrates through the adjusting through hole and is screw-fixed with the clamp base.
[0013] Preferably, the adjusting through hole is a long and narrow hole.
[0014] Through the above setting, the cantilever thin-wall part of different sizes can be adapted to, so as to be applied to more processing scenes of the cantilever thin-wall part.
[0015] Preferably, the thickness of the first annular seat, the second annular seat and the cantilever part is 5-10mm, and the diameter of the first annular seat and the second annular seat is 150-300mm.
[0016] Preferably, the adjustable supporting assembly is 4-10.
[0017] Preferably, the pressing assembly is 4-8.
[0018] The utility model also provides a machine tool which comprises the clamp for cantilever thin-wall part. BRIEF DESCRIPTION OF DRAWINGS
[0019] The various technical features of the present application and the relationships between them will be further illustrated below with reference to the accompanying drawings. The drawings are exemplary, and some technical features are not shown in actual proportion, and some technical features in the drawings can be omitted, which are conventional in the technical field to which the present application belongs and are not essential to understanding and implementing the present application, or additional technical features are shown, which are not essential to understanding and implementing the present application, that is, the combination of various technical features shown in the drawings is not used to limit the present application. In addition, throughout the present application, the same reference signs refer to the same contents. The specific drawings are as follows:
[0020] Figure 1 is a perspective view of a clamp clamping a cantilever thin-walled part;
[0021] Figure 2 (A) in Figure 1 is a cross-sectional perspective view; Figure 2 (B) in Figure 2 is a partial enlarged view of (A) in, which shows an adjustable support assembly of the clamp;
[0022] Figure 3 (A) in Figure 1 is a side view of Figure 3 (B) in Figure 1 is a top view of
[0023] Figure 4 (A) in is a top view of a cantilever thin-walled part, Figure 4 (B) in is a side view of a cantilever thin-walled part. DETAILED DESCRIPTION
[0024] Hereinafter, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings.
[0025] Unless otherwise defined, all technical and scientific terms used throughout this application are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. If there is a conflict between the meanings of terms in the specification and the meanings of terms in the attached sequence listing, the meanings of the terms in the specification control. In addition, the terms used in the present specification are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.
[0026] The term "comprising" used in the entire present application should not be interpreted as being limited to the following listed contents; it does not exclude other structural elements or steps. Therefore, it should be interpreted as specifying the existence of the mentioned technical features, whole, step or component, but does not exclude the existence or addition of one or more other technical features, whole, step or component and its group.
[0027] It will be appreciated that those skilled in the art, having the benefit of the present application, can combine features mentioned in one or more embodiments mentioned throughout the present application in any suitable manner to implement the present application.
[0028] Figure 1 is a perspective view of a clamp clamping a cantilever thin-walled part. As Figure 1 shown, the cantilever thin-walled part 4 provided by the embodiments of the present disclosure includes a first annular seat 41, a second annular seat 42 coaxial with the first annular seat 41, and a cantilever part 43 connecting the first annular seat 41 and the second annular seat 42, wherein the diameter of the first annular seat 41 is about 200 mm, the diameter of the second annular seat 42 is about 150 mm, and the thickness of the cantilever part 43, the first annular seat 41 and the second annular seat 42 is about 5-10 mm. The first annular seat 41 has a flat bottom surface, and the second annular seat 42 has a flat upper surface. The upper surface of the second annular seat 42 is used to process shapes such as holes. The cantilever part 43 is used to process shapes such as U-shaped through holes 44.
[0029] Figure 3 (A) in FIG. 1 is Figure 1 a side view of Figure 3 (B) in FIG. 1 is Figure 1 a top view of Figure 1 and Figure 3 As shown, the clamp includes a clamp base 1 on which the first annular seat 41 is placed, a pressing assembly 2 for pressing the first annular seat 41 and detachably fixed to the clamp base 1, and an adjustable support assembly 3 for supporting the second annular seat 42 and adjustably fixed to the clamp base 1.
[0030] Figure 2 (A) in FIG. 2 is Figure 1 a cross-sectional perspective view; Figure 2 (B) in FIG. 2 is Figure 2 a partial enlarged view of (A) in FIG. 2, which shows the adjustable support assembly of the clamp. As Figure 2 shown, the adjustable support assembly 3 includes an adjusting cylinder 31 fixed to the clamp base 1 and hollow cylindrical, an adjusting rod 32 inserted into the hollow space 311 of the adjusting cylinder 31 Figure 3 ), an adjusting member connected with the adjusting cylinder 31 and the adjusting rod 32 for adjusting the position of the adjusting rod 32 relative to the adjusting cylinder 31 in a direction parallel to the axial direction of the first annular seat 41 and the second annular seat 42, and a fixing member 33 for fixing the adjusting rod 32 to a desired position in the adjusting cylinder 31.
[0031] Through the above setting, the second annular seat can be supported, the deformation at the cantilever part 43 caused by poor rigidity of the cantilever thin-wall part during milling is eliminated, and problems such as long process flow and complicated processing caused by repeated reference correction in the traditional process are reduced. The processing quality and processing efficiency of the cantilever thin-wall part are improved, the production cycle and processing cost are reduced, and large-scale production and processing are suitable.
[0032] Preferably, the adjusting member comprises a first thread and a second thread connected with the adjusting cylinder 31 and the adjusting rod 32 respectively, and the first thread is screwed with the second thread. The first thread is arranged in the internal hollow space 311 of the adjusting cylinder 31, and the second thread is arranged on the outside of the adjusting rod 32. The fixing member 33 can be a nut, which is screwed with the first thread of the adjusting rod 32. When adjusting the position of the adjusting rod 32 relative to the adjusting cylinder 31, the adjusting rod 32 is screwed into the adjusting cylinder 31 to the desired position, and then the fixing member 33 is screwed into the adjusting rod 32, so as to fix the adjusting rod 32 at the desired position in the adjusting cylinder.
[0033] Through the above setting, different sizes of cantilever thin-wall parts can be adapted, so that the machining scene of more cantilever thin-wall parts can be applied.
[0034] In some embodiments, the adjusting cylinder 31 and the adjusting rod 32 are respectively provided with a fixing through hole extending in the radial direction of the cylindrical adjusting cylinder, and the fixing member penetrates through the fixing through hole, so as to limit the position of the adjusting rod 32 relative to the adjusting cylinder 31 and fix the adjusting rod 32 at the desired position in the adjusting cylinder.
[0035] As shown in Figure 3 and Figure 1 , the pressing assembly 2 comprises a pressing plate 21 and an adjusting screw 22, the pressing plate is provided with an adjusting through hole 23, and the adjusting screw 22 penetrates through the adjusting through hole 23 and is screw-fixed with the clamp base 1. In Figure 3 and Figure 1 , the adjusting through hole 23 is a long and narrow hole, so that the pressing plate 21 can move in the extension direction of the long and narrow hole, so as to adjust the position of the pressing plate 21 relative to the cantilever thin-wall part, and then adapt to different sizes of cantilever thin-wall parts.
[0036] Preferably, the number of the adjustable support assemblies is 4-10. The number of the pressing assemblies is 4-8. In the example shown in the drawings, the number of the adjustable support assemblies is 6, and the number of the pressing assemblies is 4.
[0037] The utility model also provides a machine tool, it includes the clamp for cantilever thin-wall part according to the above.
[0038] The processing method of the cantilever thin-wall part provided by the present disclosure is described below.
[0039] The method for processing cantilever thin-walled parts provided by the present disclosure comprises the following steps:
[0040] S1: clamp the fixture body to the machine tool, and align the fixture.
[0041] S2: install 6 adjustable support assemblies 3 evenly arranged directly below the corresponding second annular seat 42 of the fixture base.
[0042] Among them, the adjusting rod 32 of the adjustable support assembly 3 is connected with the adjusting cylinder 31 through threads, so that the length of the adjusting rod 32 extending out of the adjusting cylinder 31 can be adjusted, thereby adapting to different cantilever thin-walled parts.
[0043] S4: clamp the cantilever thin-walled part on the fixture.
[0044] In step S4, first place the cantilever thin-walled part on the fixture base, then adjust the position of the pressing plate 21 of the pressing assembly 2 relative to the adjusting through hole 23, so that the end of the pressing plate is pressed on the first annular seat 41, and finally tighten the adjusting screw 22, thereby clamping the cantilever thin-walled part on the fixture.
[0045] S5: adjust the adjustable support assembly.
[0046] In step S5, screw the adjusting rod 32 of the adjustable support assembly 3 into the adjusting cylinder 31, so that the top of the adjusting rod 32 is in contact with the bottom of the second annular seat 42 of the cantilever thin-walled part 4. Use a 0.02 plug gauge to check the gap between the adjusting rod 32 and the bottom of the second annular seat 42 of the cantilever thin-walled part 4, and the 0.02 plug gauge should not pass through the gap. After adjusting the gap, further screw the fixing member 33 (nut) into the adjusting rod 32, so that the fixing member 33 (nut) is in contact with the upper part of the adjusting cylinder 31, thereby fixing the adjusting rod 32 in the adjusting cylinder 31 and preventing loosening during processing.
[0047] Through the adjustable support assembly 3, the thin wall of the cantilever thin-walled part 4 is supported, preventing deformation during processing of the cantilever thin-walled part 4.
[0048] S6: semi-finishing.
[0049] S6.11: First, process the center hole (the largest hole in the center of the second annular seat 42). Then process the small holes on the end face of the remaining section of the second annular seat 42, (in the example shown in the figure, 108 Φ2.2 holes need to be processed). The small holes are processed using the "pecking drill" processing strategy, with a processing allowance of 0.1 mm. The drill bit rotates at a speed S = 8000 r / min, the feed rate F = 20 mm / min, and the drill bit is lifted and broken after processing each hole to a depth of 1 mm. This prevents the accumulation of iron chips from wearing out the drill bit during processing; the 108 Φ2.2 holes are divided into 9 holes per group, with 12 groups in total. After processing each group, the quality of the drill bit needs to be checked. This prevents the drill bit from becoming dull and affecting the axial extrusion force on the cantilever thin-walled part.
[0050] S6.2: Finally, process the U-shaped through hole 44 on the cantilever portion 43. In this step, semi-finishing is performed using high-speed dynamic milling. A D10 alloy milling cutter is used, with a rotational speed S = 8000 r / min, a feed rate F = 1000 mm / min, a step size of 0.5 mm, and a finishing allowance of 0.3 mm. High-speed dynamic milling has the advantages of high processing efficiency, smooth milling, constant cutting step, uniform cutting force, and smooth machine operation.
[0051] S7: Finishing.
[0052] S7.1: First, use a reamer to finish the largest through hole on the second annular seat, with a rotational speed S = 5000 r / min and a feed rate F = 15 mm / min.
[0053] S7.2: Then, finish the U-shaped through hole 44 on the cantilever portion 43 using a D10 alloy milling cutter, with a rotational speed S = 5000 r / min and a feed rate F = 500 mm / min.
[0054] S8: Unloading.
[0055] In step S8, the adjusting screw 22 is loosened, the pressure plate 21 is moved, and the cantilever thin-walled part is removed for inspection. If the inspection is passed, the processing of the cantilever thin-walled part is completed.
[0056] S9: Product acceptance, processing is complete.
[0057] Note that the above is only a preferred embodiment of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, reconfigurations and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the technical concept of the present application, and all fall within the scope of protection of the present application.
Claims
1. A clamp for a cantilever thin-walled part, characterized in that, the cantilever thin-walled part comprises a first annular seat, a second annular seat coaxial with the first annular seat, and a cantilever portion connecting the first annular seat and the second annular seat, the clamp comprises: a clamp base on which the first annular seat is placed; a pressing assembly for pressing the first annular seat and detachably fixed to the clamp base; and an adjustable support assembly for supporting the second annular seat and adjustably fixed to the clamp base, wherein the adjustable support assembly comprises: an adjusting cylinder fixed to the clamp base; an adjusting rod inserted into the adjusting cylinder; an adjusting member connected with the adjusting cylinder and the adjusting rod for adjusting the position of the adjusting rod relative to the adjusting cylinder in a direction parallel to the axial direction of the first annular seat and the second annular seat; and a fixing member for fixing the adjusting rod in the adjusting cylinder.
2. The clamp of claim 1, wherein the adjusting member comprises a first thread and a second thread connected with the adjusting cylinder and the adjusting rod respectively, and the first thread is screwed with the second thread.
3. The clamp of claim 2, wherein the fixing member is a nut screwed with the first thread of the adjusting rod.
4. The clamp of claim 1, wherein the pressing assembly comprises a pressing plate and an adjusting screw, the pressing plate is provided with an adjusting through hole, and the adjusting screw penetrates through the adjusting through hole and is screw-fixed with the clamp base.
5. The clamp of claim 4, wherein the adjusting through hole is a long and narrow hole.
6. The clamp of claim 1, wherein the thickness of the first annular seat, the second annular seat and the cantilever portion is 5-10 mm, and the diameter of the first annular seat and the second annular seat is 150-300 mm.
7. The clamp of claim 1, wherein the adjustable support assembly is 4-10.
8. The clamp of claim 1, wherein the pressing assembly is 4-8.
9. A machine tool, characterized by a clamp for a cantilever thin-walled part according to any one of claims 1-8.