Adjustable turning clamp for semi-closed cabin

Abstract

The utility model provides an adjustable turning clamp for a semi-closed cabin. The adjustable turning clamp comprises a base, the center of the base is provided with a height-adjustable faceplate, the side face of the faceplate is evenly provided with a plurality of pressing blocks in the radial direction, the distance between the pressing blocks and the faceplate can be adjusted, the base comprises a disc-shaped limiting disc and a supporting disc, the diameter of the limiting disc is smaller than that of the supporting disc, and the limiting disc is fixed to the center of the supporting disc. The inner side face of the cabin body end frame is buckled through the base plate and the face plate, the cabin body is tightly pressed on the base through the pressing block, the gap between the clamping device and the cabin body is small, clamping is stable, the cabin body is not extruded, and deformation of the cabin body cannot be caused; as the clamp is located in the inner cavity of the cabin body, interference of machining of the small-end end face, the appearance curved surface and the large-end hoop butt joint groove of a product is avoided, production and machining of all elements are completed through one-time clamping, and the product quality can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to a semi-enclosed cabin adjustable vehicle clamp. Background Art

[0002] The turning of semi-enclosed blind cavity cabins presents challenges such as difficult clamping, deformation, and poor quality assurance, a long-standing difficulty in the machinery manufacturing industry. Effectively addressing these technical challenges in turning semi-enclosed cabins, such as difficult clamping, deformation, and poor quality assurance, is crucial to the quality and profitability of the final product.

[0003] like Figure 5 As shown, it is a semi-enclosed blind cavity structure of a cabin, with an outer diameter of Φ534.4mm and a total length of 354mm. The difference from the conventional cabin is that the small end of this cabin is a closed structure, forming a semi-enclosed blind cavity cabin. The docking size accuracy of the large end frame of the semi-enclosed cabin is required to be high, and the coaxiality is not greater than Φ0.05mm.

[0004] The existing method is to use soft jaws to support the large end frame to turn the shape. However, due to the uneven radial force on the workpiece during processing, the cabin body will be severely deformed. The dimensional accuracy of the large end docking during processing is also difficult to ensure. In addition, this clamping method is unstable and has poor reliability and safety.

[0005] Another type of plug fixture uses a "one plug and one push" clamping method. The machine tool uses three jaws to clamp the back end of the plug and align the plug center. Then, the front end of the plug is matched with the inner hole and end face of the cabin end frame. Finally, a top plate is installed on the tailstock of the machine tool to support the small end face of the cabin. The cabin runout is then checked with a dial indicator to confirm that it is correct before processing. The disadvantages of this method are as follows:

[0006] ① The machining dimensions of the inner hole at the large end of the cabin are interchangeable. There is a gap, transition or interference between the plug and the inner hole of the cabin, making it difficult to ensure machining accuracy and resulting in unstable quality.

[0007] ② After the tailstock of the machine tool presses against the small end face of the cabin, the small end face of the cabin cannot be machined. Secondary clamping is required to complete the turning of the small end face. There are problems such as deformation caused by multiple clamping and low production efficiency;

[0008] ③ The cabin adopts a "one blocking and one pushing" clamping method, which makes the cabin subject to axial extrusion force. After the processing is completed and the machine tool is removed, the workpiece will be deformed due to the release of internal stress, which will eventually lead to dimensional deviation. Utility Model Content

[0009] In order to solve the above technical problems, the utility model provides a semi-enclosed cabin adjustable vehicle clamp.

[0010] The utility model is achieved through the following technical solutions.

[0011] The utility model provides a semi-enclosed cabin adjustable car clamp, which includes a base; a faceplate with adjustable height is installed in the center of the base, and a plurality of pressure blocks with adjustable distances from the faceplate are evenly installed along the radial direction of the side of the faceplate; the base includes a disc-shaped limiting plate and a supporting plate, the diameter of the limiting plate is smaller than the diameter of the supporting plate and is fixed at the center of the supporting plate.

[0012] A through hole is processed in the center of the flower disc, and a screw is installed in the through hole. One end of the screw extends out of the flower disc and is installed with two fastening nuts, and the other end extends into the center of the base and is installed with a fastening nut.

[0013] The bottom of the support plate is processed with a countersunk hole, and the end of the screw rod is placed in the countersunk hole.

[0014] The side surface of the faceplate is processed with a plurality of threaded holes along its radial direction, and hexagonal stud bolts are installed in the threaded holes. The other ends of the hexagonal stud bolts are assembled with the threaded holes processed on the side surface of one end of the pressing block.

[0015] The side surface of one end of the pressing block opposite to the threaded hole is processed into an arc shape.

[0016] The edge of the support plate is also processed with a plurality of mounting holes.

[0017] The beneficial effects of the present invention are: the inner side of the cabin end frame is buckled by the chassis and the disc, and the cabin is pressed against the base by the pressure block, the gap between the cabin and the cabin is small, the clamping is firm, and there is no squeezing of the cabin, which will not cause deformation of the cabin; because the clamp is located in the inner cavity of the cabin, interference with the processing of the small end face, the outer curved surface and the large end hoop docking groove of the product is avoided, so that all elements of production and processing can be completed by one clamping, and product quality can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the fixture structure of the present utility model;

[0019] Figure 2 It is a side structural diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the cabin clamping of the present invention;

[0022] Figure 5 It is a structural diagram of the cabin;

[0023] In the figure: 1-base, 11-limiting plate, 12-support plate, 13-mounting hole, 14-countersunk hole, 2-face plate, 3-pressing block, 31-threaded hole, 32-arc surface, 4-hexagonal stud bolt, 5-screw, 6-fastening nut. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0025] A semi-enclosed cabin adjustable car clamp includes a base 1; a height-adjustable disc 2 is installed in the center of the base 1, and a plurality of pressure blocks 3 with adjustable distances from the disc 2 are evenly installed along the radial side of the disc 2. The base 1 includes a disc-shaped limit plate 11 and a support plate 12. The diameter of the limit plate 11 is smaller than the diameter of the support plate 12 and is fixed to the center of the support plate 12.

[0026] A through hole is machined in the center of the faceplate 2, and a screw 5 is installed in the through hole. One end of the screw 5 extends out of the faceplate 2 and is installed with two fastening nuts 6, and the other end extends into the center of the base 1 and is installed with a fastening nut 6.

[0027] A countersunk hole 14 is machined on the bottom of the support plate 12 , and the end of the screw rod 5 is placed in the countersunk hole 14 .

[0028] The side of the faceplate 2 is processed with a plurality of threaded holes 31 along its radial direction, and a hexagonal stud bolt 4 is installed in the threaded hole 31. The other end of the hexagonal stud bolt 4 is assembled with the threaded hole 31 processed on the side of one end of the pressing block 3.

[0029] The side surface of one end of the pressing block 3 opposite to the threaded hole 31 is processed into an arc shape.

[0030] The edge of the support plate 12 is further processed with a plurality of mounting holes 13 .

[0031] Embodiment: Four threaded mounting holes are provided on the side of the high-strength faceplate 2 for mounting one end of a hexagonal stud bolt 4, and the other end of the hexagonal stud bolt 4 is connected to the threaded mounting hole 31 on the end face of the pressing block 3. By adjusting the exposed length of the hexagonal stud bolt 4, the diameter of the quasi-circular shape formed by the outer side faces of the four pressing blocks 3 can be controlled.

[0032] When in use, first adjust the exposed length of the hexagonal stud bolts 4 so that the diameter parameter of the outer side of the pressure block 3 is smaller than the inner hole diameter of the large end of the semi-enclosed cabin, ensuring that the four pressure blocks 3 can fully extend into the cabin body cavity, and then adjust the exposed length of the hexagonal stud bolts again so that the lower end faces of the four pressure blocks 3 can be fully pressed against the inner side of the semi-enclosed cabin end frame and firmly and reliably.

[0033] After completing the above steps, install two nuts 6 on one end of the screw rod 5, then reach into the inner cavity of the semi-enclosed cabin by hand, extend it from the through hole in the center of the high-strength disc 2 to the outside of the cabin body, and pass through the countersunk hole 15 at the center of the base 1. Adjust the nut 6 so that the screw rod 5 does not exceed the lower surface of the base 1, and ensure that the large end surface of the semi-enclosed cabin is tightly fitted with the upper surface of the base 1, then install the nut 6 on the end of the screw rod 5 at the countersunk hole 15 and tighten it. At this time, the semi-enclosed cabin and the adjustable turning fixture are integrated into one, and the side of the base 1 is used to avoid the machine tool spindle and tool during turning.

[0034] After completing the above steps, the overall structure consisting of the semi-enclosed cabin and the adjustable lathe fixture is connected to the machine tool base through the four mounting holes 13 provided on the base 1. The semi-enclosed cabin is clamped by aligning the center of the cabin body by dialing. The small end face, outer shape and large end docking part of the semi-enclosed cabin can be clamped and processed at one time. Figure 4 shown.

Claims

1. A semi-enclosed cabin adjustable vehicle clamp, comprising a base (1), characterized in that: A height-adjustable faceplate (2) is installed at the center of the base (1), and a plurality of pressure blocks (3) with adjustable distances from the faceplate (2) are evenly installed along the radial direction of the side surface of the faceplate (2). The base (1) comprises a disc-shaped limiting plate (11) and a supporting plate (12), wherein the diameter of the limiting plate (11) is smaller than the diameter of the supporting plate (12) and is fixed at the center of the supporting plate (12).

2. The semi-enclosed cabin adjustable vehicle clamp according to claim 1, characterized in that: A through hole is machined in the center of the faceplate (2), and a screw (5) is installed in the through hole. One end of the screw (5) extends out of the faceplate (2) and is installed with two fastening nuts (6), and the other end extends into the center of the base (1) and is installed with a fastening nut (6).

3. The semi-enclosed cabin adjustable vehicle clamp according to claim 2, characterized in that: The bottom of the support plate (12) is processed with a countersunk hole (14), and the end of the screw rod (5) is placed in the countersunk hole (14).

4. The semi-enclosed cabin adjustable vehicle clamp according to claim 1, characterized in that: The side surface of the faceplate (2) is machined with a plurality of threaded holes (31) along its radial direction, a hexagonal stud bolt (4) is installed in the threaded hole (31), and the other end of the hexagonal stud bolt (4) is assembled with the threaded hole (31) machined on the side surface of one end of the pressing block (3).

5. The semi-enclosed cabin adjustable vehicle clamp according to claim 4, characterized in that: The side surface of one end of the pressing block (3) relative to the threaded hole (31) is processed into an arc shape.

6. The semi-enclosed cabin adjustable vehicle clamp according to claim 1, characterized in that: The edge of the support plate (12) is also processed with a plurality of mounting holes (13).

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