Multifunctional positioning device capable of improving coaxiality of parts

Abstract

The utility model discloses a multifunctional positioning device capable of improving the coaxiality of parts. The multifunctional positioning device is characterized by comprising a tool and an adjustable bolt, the tool is of a structure integrating a bottom plate and a cylinder, a threaded hole is formed in the upper surface of the cylinder, the outer circle of the cylinder is in clearance fit with a through hole in the tail of a workpiece, and an adjustable bolt penetrates through the workpiece from the upper portion and then is connected with the threaded hole of the cylinder. The multifunctional positioning device capable of improving the coaxiality of the parts is simple in structure, accurate in positioning, high in interchangeability, convenient to operate, low in use cost and suitable for machining workpieces in batches, the clamp is selected, the labor intensity of workers can be effectively reduced, the operation time of the workers can be effectively shortened, and the production efficiency of the workers is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts installation and positioning, and in particular relates to a multifunctional positioning device which can improve the coaxiality of parts. Background Art

[0002] Due to the complex shapes of some parts and large batches, there are many cases of scrapped parts due to the difficulty of clamping during the processing of some parts with coaxiality requirements. Figure 1 As shown, when processing the workpiece, each surface needs to be positioned and processed one by one. Due to its complex shape, in order to meet its processing accuracy, it takes a lot of time to clamp, position and align each surface, resulting in very low work efficiency during processing and unable to meet the progress requirements of batch processing.

[0003] The workpiece head has an irregular shape, and the tail is cylindrical. The arc of the workpiece shape and the tail cylinder have coaxiality requirements. It is inconvenient to clamp during processing, and the coaxiality is difficult to ensure. Figure 1 For the part shown, the CNC milling machine is required to mill out the cylindrical protrusion on the workpiece head first, and the B surface is milled into an arc surface by a tooling, and then the A groove of the workpiece is processed by wire cutting. When processing the A (groove) surface and B (arc) surface of the workpiece, due to the irregular shape of the part, it is inconvenient to clamp during the processing. Utility Model Content

[0004] The utility model provides a multifunctional positioning device capable of improving the coaxiality of parts, and aims to solve the problem of batch waste caused by inconvenient clamping during the processing of some workpieces with irregular shapes and form tolerances.

[0005] In order to solve the above technical problems, the utility model provides a multifunctional positioning device that can improve the coaxiality of parts, characterized in that it includes a tooling and an adjustable bolt; the tooling is a structure in which a base plate and a cylinder are integrated, a threaded hole is opened on the upper surface of the cylinder, and the outer circle of the cylinder is gap-matched with the through hole at the tail of the workpiece, and the adjustable bolt passes through the workpiece from above and is connected to the threaded hole of the cylinder.

[0006] Beneficial effects: The utility model is a multifunctional positioning device that can improve the coaxiality of parts. It has a simple structure, precise positioning, high interchangeability and easy operation. The use cost of this fixture is low and it is suitable for batch processing of workpieces. It can effectively reduce the labor intensity and operation time of personnel and improve the production efficiency of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of finished workpiece structure

[0008] Figure 2 Schematic diagram of the workpiece's processing state before using the tooling

[0009] Figure 3 Structural diagram of the workpiece surface (A (groove) surface, B (arc) surface) that needs to be processed by the tooling

[0010] Figure 4 Schematic diagram of a multifunctional positioning device capable of improving the coaxiality of parts

[0011] Figure 5 Schematic diagram of tooling structure for processing B (arc) surface

[0012] Figure 6 Schematic diagram of adjustable bolt structure

[0013] Figure 7 Tooling structure diagram

[0014] Figure 8 Schematic diagram of connecting plate structure

[0015] Figure numerals: 1-workpiece; 2-tool; 3-set screw; 4-adjustable bolt; 5-nut; 6-connecting plate. DETAILED DESCRIPTION

[0016] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.

[0017] The utility model proposes a multifunctional positioning device capable of improving the coaxiality of parts, comprising a tool 2, a set screw 3, a nut 5, and a connecting plate 6;

[0018] like Figure 1 As shown, the workpiece is a part with a complex shape, a boss with a transverse groove on the head, a cylindrical tail and the arc surface of the outer shape is required to be coaxial with the cylinder.

[0019] The tooling is a structure in which a base plate and a cylinder are integrated. The base plate is a rectangular parallelepiped structure. A threaded hole is opened on the upper surface of the cylinder. The outer circle of the cylinder and the D2 hole at the tail of the workpiece have a clearance fit (+0.001-+0.002mm) (see attached for details) Figure 1 ),Will Figure 6 The adjustable bolt 4 passes through the workpiece from above and is connected to the threaded hole of the cylinder, which is convenient for processing the arc surface of the workpiece B. The upper surface of the adjustable bolt is used to fix the workpiece and limit the movement of the workpiece in the Y direction; the outer circle of the cylinder on the upper surface of the tooling is matched with the inner hole of the workpiece to limit the movement of the workpiece in the X and Z directions;

[0020] like Figure 7 As shown in the figure, there are two holes on the bottom plate of fixture 2, which is fixed on the workbench of the CNC milling machine with set screws and nuts (Note: the workbench has T-slots, screwing in the screws and nuts to facilitate the positioning of the fixture). This fixture can ensure the coaxiality and positioning accuracy requirements of the workpiece without alignment for batches of such parts.

[0021] Attach Figure 4 Take the processing of the A-side groove as an example: fix the workpiece on the tooling, lay it down horizontally, and make sure the inner surface of the workpiece hole matches the clearance of the cylindrical surface of the tooling. Tighten the tooling 2 and the connecting plate 6 on the wire cutting workbench with the set screws 3, and tighten with the nut 5 to realize the processing of the A-side groove.

[0022] The adjustable bolt 4 is a columnar thread structure, which can be closely matched with the upper surface of the workpiece to achieve the positioning of the workpiece in the Y direction;

[0023] There is one connecting plate, which is a bent part with two holes on each side. One side is for convenient fixing of the workpiece A groove on the wire cutting workbench; the other side is convenient for connecting the tooling.

[0024] Working principle: The workpiece shape is first processed to the initial state of the part (such as the attached Figure 2 As shown in the figure, the CNC lathe machine turns the tail cylinder and inner hole. Figure 5 Fix the workpiece on the fixture shown in the figure, tighten the workpiece with a self-made adjustable bolt to limit the movement of the workpiece in the X and Z directions. Fix the fixture on the worktable of the CNC milling machine by tightening screws and nuts to limit the movement of the workpiece in the Y direction. The CNC milling machine mills out the arc-shaped B surface of the head (as shown in the attached figure). Figure 5 The connecting plate is connected to the attached Figure 5 The tooling shown in the figure is connected and then fastened to the online cutting workbench to achieve its XYZ positioning and process the groove shown in A (such as Figure 4 shown).

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional positioning device capable of improving the coaxiality of parts, characterized in that: It includes a tooling and an adjustable bolt; the tooling is a structure in which a base plate and a cylinder are integrated, a threaded hole is opened on the upper surface of the cylinder, the outer circle of the cylinder and the through hole at the tail of the workpiece are matched with each other, and the adjustable bolt passes through the workpiece from above and is connected with the threaded hole of the cylinder.

2. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: The head of the part has a boss with a transverse groove, the tail is cylindrical and the arc surface is required to be coaxial with the cylinder.

3. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: The bottom plate is a rectangular parallelepiped structure.

4. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: The tooling base plate is fixed on the workbench of the CNC milling machine.

5. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: Two holes are opened on the tooling base plate, which is fixed to the CNC milling machine workbench with set screws and nuts.

6. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 5, characterized in that: The workbench has T-slots.

7. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: The tooling is fixedly connected to the wire cutting workbench through a connecting plate.

8. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 7, characterized in that: The connecting plate is a bent part.

9. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 8, characterized in that: There are two holes on each side of the connecting plate, one side is for conveniently fixing the tooling on the wire cutting workbench to process the workpiece A groove; the other side is convenient for connecting the tooling for processing the arc surface of the workpiece B.

10. A multifunctional positioning device capable of improving the coaxiality of parts according to claim 1, characterized in that: The clearance between the outer circle of the cylinder and the through hole at the tail of the workpiece is 0.001-0.002mm.

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