Balance shaft shell machining and positioning device

Abstract

The utility model relates to a balance shaft shell processing and positioning device which comprises a spindle box, a positioning assembly is installed on the spindle box, a workpiece is installed on the right portion of the positioning assembly, the outer wall of the right portion of the positioning assembly is attached to the inner wall of the left portion of the workpiece, the right end of the positioning assembly is connected with a pressing plate used for pressing the workpiece, and the pressing plate is located in a shell of the workpiece. A pressing space is formed between the positioning assembly and the pressing plate, a balance shaft positioning protrusion on the inner wall of the workpiece is located in the pressing space, the positioning assembly comprises a positioning taper shank installed on the spindle box and a positioning mandrel fixedly arranged at the right end of the positioning taper shank and located on the right side of the spindle box, and the positioning mandrel is located in the workpiece shell. The positioning mandrel extends to the balance shaft positioning protrusion, the outer wall of the positioning mandrel is attached to the inner wall of a shell of a workpiece, the balance shaft shell can be pressed and positioned from the interior of the balance shaft shell, and therefore machining is not affected while the balance shaft shell is stably clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing shaft shell processing, in particular to the field of balancing shaft shell processing tooling, and specifically refers to a balancing shaft shell processing positioning device. Background Art

[0002] In the field of mechanical processing, especially in the processing of balance shaft housings, accurate positioning and stable clamping of workpieces are key factors to ensure processing accuracy and quality. Traditional processing methods often use simple fixtures or positioning devices to fix the workpiece, but these traditional methods are often difficult to meet the needs when processing workpieces with complex shapes or high precision requirements, especially for workpieces such as balance shaft housings, whose internal structure and positioning requirements are relatively complex. The balance shaft housing is a key component in mechanical equipment such as automobiles and mining cars, mainly used to install and support the balance shaft. In the manufacturing process of automobile parts, the processing accuracy and efficiency of the balance shaft housing have an important impact on the performance of the entire vehicle. During the processing of the balance shaft housing, a positioning device that can accurately and stably position the workpiece and keep the workpiece position unchanged during the processing is required.

[0003] In the prior art, although some similar positioning devices are used in the processing of balancing shaft shells, they often have problems such as low positioning accuracy, unstable clamping or complicated operation. Most of the traditional balancing shaft shell processing tooling are simple in design and cannot adapt well to the needs of modern lathe processing, especially in terms of clamping force control and workpiece positioning accuracy. There are many deficiencies, and many clamping tools clamp the workpiece from the outside, which will affect its appearance and accuracy and affect the processing process. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a balancing shaft shell processing positioning device, which can press and position the balancing shaft shell from the inside of the balancing shaft shell, so that the balancing shaft shell is stably clamped without affecting processing.

[0005] The utility model is realized through the following technical scheme, and provides a balancing shaft shell processing positioning device, including a spindle box, a positioning assembly is installed on the spindle box, a workpiece is installed on the right part of the positioning assembly, the right outer wall of the positioning assembly is fitted with the left inner wall of the workpiece, the right end of the positioning assembly is connected with a pressing plate for pressing the workpiece, the pressing plate is located in the shell of the workpiece, a pressing space is formed between the positioning assembly and the pressing plate, and the balancing shaft positioning protrusion on the inner wall of the workpiece is located in the pressing space.

[0006] The utility model arranges a positioning component for installing and positioning the balancing shaft shell. The right outer wall of the positioning component fits with the left inner wall of the workpiece, making the fixation of the balancing shaft shell more stable and accurate. At the same time, the pressure plate is located in the balancing shaft shell. The pressure plate presses the balancing shaft shell without hindering the processing of the outside of the balancing shaft shell.

[0007] As an optimization, the positioning assembly includes a positioning cone handle mounted on the spindle box, and a positioning mandrel fixed to the right end of the positioning cone handle and located on the right side of the spindle box. The positioning mandrel is located in the workpiece housing, and the positioning mandrel extends to the balancing shaft positioning protrusion. The outer wall of the positioning mandrel fits with the inner wall of the workpiece housing. In the setting of this optimization scheme, the positioning cone handle is used to connect the positioning mandrel to the spindle box, and the outer wall of the positioning mandrel fits with the inner wall of the workpiece housing, which further enhances the accuracy and stability of positioning.

[0008] As an optimization, the pressing plate is fixed to the positioning cone handle by a clamping bolt, and the clamping bolt is threadedly connected to the pressing plate and the positioning cone handle respectively. In the setting of this optimization scheme, the pressing plate is fixed to the positioning cone handle by bolts. This design enables the pressing plate to firmly clamp the workpiece to prevent the workpiece from moving or vibrating during processing. The bolt connection method is simple and reliable, and easy to install and adjust.

[0009] As an optimization, a tightening bolt installed in the spindle box is fixed at the left end of the positioning assembly, the left end of the tightening bolt extends to the left side of the spindle box, and the left end of the tightening bolt is threadedly connected to the locking nut. The setting of this optimization scheme fixes the positioning assembly to the spindle box by the tightening bolt, so that the positioning assembly can fit more closely on the spindle box, thereby enhancing the overall stability of the device.

[0010] As an optimization, the left part of the pressing plate is a cylinder, the right part of the pressing plate is a truncated cone, the bottom surface of the truncated cone is fixedly connected to the right end of the cylinder, and the outer wall of the cylinder fits the inner wall of the workpiece shell. The setting of this optimization scheme enables the pressing plate to better adapt to the shape of the workpiece shell, thereby more effectively clamping the workpiece. At the same time, this design also increases the contact area between the pressing plate and the inner wall of the workpiece shell, improving the clamping effect.

[0011] As an optimization, a mounting column is provided at the right end of the positioning cone handle, the positioning mandrel is annular, the positioning mandrel is mounted on the mounting column, and the outer wall of the mounting column fits with the inner wall of the positioning mandrel. The setting of this optimization scheme enables the positioning mandrel to be more stably fixed on the positioning cone handle, and at the same time, the outer wall of the mounting column fits with the inner wall of the positioning mandrel, further enhancing the stability of the installation.

[0012] As an optimization, the positioning cone handle is conical. According to the configuration of this optimization scheme, the conical positioning cone handle has a large overall strength and is not easy to be broken, so that the positioning cone handle exhibits higher stability and durability when subjected to high loads or impacts.

[0013] The beneficial effects of the utility model are as follows: the utility model realizes high-precision positioning and stable clamping of the workpiece during the processing through reasonable structural design and functional configuration, and meets the high requirements for the processing of the balancing shaft shell. Its design features embody the principles of high efficiency, stability and reliability, and provide strong support for the processing of the balancing shaft shell. The way in which the pressure plate presses the balancing shaft shell is simple and reliable. The pressure plate is located inside the balancing shaft shell and does not affect the processing of the outside thereof. The pressure plate is firmly connected to the positioning cone handle by bolts, which can effectively press the workpiece to prevent the workpiece from moving or vibrating during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the use of the utility model;

[0015] Figure 2 This is a schematic diagram of the pressure plate installation;

[0016] Figure 3 To locate the component structure visual intent;

[0017] Figure 4 It is the right view of the positioning component;

[0018] Figure 5 It is the right view of the pressure plate;

[0019] Figure 6 It is a cross-sectional view of the workpiece;

[0020] As shown in the figure:

[0021] 1. Spindle box, 2. Positioning assembly, 21. Positioning taper shank, 22. Positioning mandrel, 3. Pressing plate, 4. Tension bolt, 5. Locking nut, 6. Pressing bolt, 7. Workpiece, 71. Housing, 72. Balance shaft limit protrusion, 8. Lathe flange, 9. Pressing space. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0023] like Figures 1 to 6 The utility model is shown as a balancing shaft shell processing positioning device, including a spindle box 1, the spindle box is the existing technology, the right end of the spindle box is installed with a lathe flange 8, the spindle box is installed with a positioning assembly 2, the positioning assembly 2 is installed on the right end surface of the spindle box, the positioning assembly extends in the left and right directions, the positioning assembly 2 extends from the spindle box to the right side of the spindle box, the workpiece 7 is installed on the right part of the positioning assembly 2, the workpiece 7 is located on the right side of the spindle box 1, the workpiece includes a shell 71 and a balancing shaft positioning protrusion 72 on the inner wall of the shell, the right outer wall of the positioning assembly 2 is in contact with the left inner wall of the workpiece, and the right end of the positioning assembly 2 extends to the left end surface of the balancing shaft positioning protrusion 72 of the workpiece 7.

[0024] like Figure 3 As shown, the positioning assembly 2 includes a positioning taper shank 21 installed on the spindle box, the positioning taper shank is conical, the diameter of the right end face of the positioning taper shank 21 is larger than the inner diameter of the lathe flange 8, the diameter of the left end face of the positioning taper shank 21 is smaller than the inner diameter of the lathe flange 8, the positioning taper shank extends in the left and right directions, the positioning taper shank is installed at the axis center of the lathe flange 8, and the positioning taper shank 21 passes through the lathe flange 8.

[0025] A mounting column is provided at the right end of the positioning cone handle 21. The mounting column and the positioning cone are integrally formed. The mounting column is cylindrical and extends in the left-right direction. The mounting column is located on the right side of the lathe flange 8. A right bolt hole extending in the left-right direction is provided on the mounting column. A left bolt hole coaxially arranged with the right bolt hole is provided on the left end face of the positioning cone handle. A tensioning bolt 4 installed in the spindle box is fixed at the left end of the positioning assembly 2. The tensioning bolt extends in the left-right direction. The right end of the tensioning bolt 4 extends into the bolt hole and is threadedly connected to the positioning cone handle.

[0026] like Figure 2 As shown, this embodiment also includes a positioning spindle 22 fixedly mounted on the right end of the positioning taper handle 21 and located on the right side of the spindle box 1, the positioning spindle 22 extends in the left-right direction, the positioning spindle is annular, the positioning spindle 22 is mounted on the mounting column, the outer wall of the mounting column is fitted with the inner wall of the positioning spindle, the left end face of the positioning spindle 22 is 2 mm away from the right end face of the lathe flange 8, the outer diameter of the positioning spindle 22 is larger than the inner diameter of the right end face of the lathe flange, the workpiece 7 is mounted on the positioning spindle 22, the positioning spindle 22 is located in the workpiece housing 71, the positioning spindle 22 extends to the left end face of the balancing shaft positioning protrusion 72, and the outer wall of the positioning spindle 22 is fitted with the inner wall of the workpiece housing.

[0027] The left end of the tightening bolt extends to the left side of the spindle box 1, and the left end of the tightening bolt is threaded. The left end of the tightening bolt is threadedly connected to the locking nut 5. A washer is arranged between the locking nut 5 and the spindle box, and the washer is sleeved on the tightening bolt. Tightening the locking nut 5 can tighten the positioning assembly on the spindle box.

[0028] The right end of the positioning assembly is connected to a pressure plate 3 for clamping the workpiece. A pressure plate hole extending in the left-right direction is opened on the pressure plate 3. The pressure plate 3 is fixed to the positioning cone handle 21 by a clamping bolt 6. The clamping bolt passes through the pressure plate hole and extends to the right bolt hole on the mounting column. The clamping bolt is threadedly connected to the pressure plate 3 and the positioning cone handle 21 respectively. The pressure plate 3 is located in the shell of the workpiece, and the pressure plate 3 is located on the right side of the balance shaft positioning protrusion 72.

[0029] The left part of the pressure plate is a cylinder, and the right part of the pressure plate is a truncated cone. The bottom surface of the truncated cone is fixedly connected to the right end of the cylinder, the outer wall of the cylinder fits with the inner wall of the workpiece shell, and the left end of the cylinder fits with the right end surface of the balancing shaft positioning protrusion 72. A pressing space 9 is formed between the positioning assembly 2 and the pressure plate 3. The balancing shaft positioning protrusion on the inner wall of the workpiece is located in the pressing space 9. Tightening the clamping bolt 6 can press the workpiece 7 onto the positioning assembly 2 through the pressure plate.

[0030] During use of this embodiment, the positioning cone handle 21 and the positioning core shaft 22 are welded to form a positioning component 2, and the positioning component is inserted into the center hole of the lathe flange 8 from the right end. The left end of the positioning component 2 is threadedly connected to the tightening bolt 4, and the positioning component is tightened on the spindle box 1 by tightening the locking nut 5 at the left end of the tightening bolt 4. The workpiece is placed on the positioning core shaft 22, and the workpiece 7 is pushed so that the left end face of the balancing shaft positioning protrusion 72 of the workpiece 7 contacts the right end face of the positioning core shaft 22. The clamping bolt 6 is inserted into the pressure plate, and the pressure plate is placed in the workpiece 7 so that the left end face of the pressure plate contacts the right end face of the balancing shaft positioning protrusion 72. The left end of the clamping bolt 6 enters the right bolt hole of the positioning cone handle 21, and the clamping bolt 6 is tightened so that the workpiece 7 is clamped on the positioning component 2.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A balancing shaft housing machining and positioning device, comprising a spindle box (1), characterized in that: A positioning assembly (2) is installed on the spindle box, the workpiece is installed on the right side of the positioning assembly (2), the right outer wall of the positioning assembly (2) is in contact with the left inner wall of the workpiece, the right end of the positioning assembly is connected to a pressing plate (3) for pressing the workpiece, the pressing plate (3) is located in the shell of the workpiece, a pressing space (9) is formed between the positioning assembly (2) and the pressing plate (3), and a balancing shaft positioning protrusion on the inner wall of the workpiece is located in the pressing space (9).

2. A balance shaft housing processing and positioning device according to claim 1, characterized in that: The positioning assembly comprises a positioning cone handle (21) mounted on the spindle box, and a positioning mandrel (22) fixed to the right end of the positioning cone handle (21) and located on the right side of the spindle box (1), the positioning mandrel (22) being located in the workpiece housing, the positioning mandrel (22) extending to the balancing shaft positioning protrusion, and the outer wall of the positioning mandrel (22) being in contact with the inner wall of the workpiece housing.

3. A balance shaft housing processing and positioning device according to claim 2, characterized in that: The pressing plate (3) is fixedly connected to the positioning cone handle (21) via a clamping bolt (6), and the clamping bolt is threadedly connected to the pressing plate (3) and the positioning cone handle (21) respectively.

4. The balancing shaft housing processing and positioning device according to claim 1, characterized in that: A tensioning bolt (4) installed in the spindle box is fixedly disposed at the left end of the positioning assembly (2); the left end of the tensioning bolt extends to the left side of the spindle box (1); and the left end of the tensioning bolt is threadedly connected to a locking nut (5).

5. The balancing shaft housing machining and positioning device according to claim 1, characterized in that: The left part of the pressing plate is a cylinder, the right part of the pressing plate is a truncated cone, the bottom surface of the truncated cone is fixedly connected to the right end of the cylinder, and the outer wall of the cylinder is in contact with the inner wall of the workpiece shell.

6. A balance shaft housing processing and positioning device according to claim 2, characterized in that: The right end of the positioning cone handle is provided with a mounting column, the positioning mandrel is annular, the positioning mandrel (22) is mounted on the mounting column, and the outer wall of the mounting column is in contact with the inner wall of the positioning mandrel.

7. The balancing shaft housing machining and positioning device according to claim 2, characterized in that: The positioning cone handle is cone-shaped.

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