Torsion bar of automobile telescopic electric pedal and machining device

Abstract

The torsion bar is of a hollow pipe structure, flat faces and through holes are machined in the two ends of the torsion bar, the machining device comprises an upper pressing block and a base, the torsion bar is placed in the middle of the base through a support, the torsion bar is positioned through a right side inner positioning mechanism and a left side inner positioning mechanism, and meanwhile a mandrel serves as an inner die. Outer positioning mechanisms which are symmetrical left and right are placed on the base, and an inner positioning straight rod, an outer positioning straight rod and a plane stamping die are installed on the upper pressing block. During working, the torsion bar is placed on the support, the upper pressing block moves downwards to enable the inner positioning mechanism to move towards the middle until the torsion bar is positioned, then the outer positioning mechanism fixes the outer circumference of the torsion bar, and then the plane stamping die conducts stamping forming on the torsion bar. According to the device, double positioning of the inner die and the outer die is achieved while the torsion bar is positioned, meanwhile, the excess material expansion section is machined on the positioning shaft, the stamping allowance can move in the axial direction, and the machining quality of products and reliable application of the device are guaranteed.

Description

Technical Field

[0001] The invention relates to a torsion rod of an automobile telescopic electric pedal and a processing device thereof. Background Art

[0002] The torsion bar is a component for transmitting force of the automobile telescopic electric pedal. The existing torsion bar is processed from a solid round bar. Current automobile production advocates lightweighting. While ensuring the transmission torque, it is changed to a hollow tube structure and the processing technology is changed at the same time. Summary of the invention

[0003] In view of the shortcomings existing in the above problems, the present invention provides a torsion rod of an automobile telescopic electric pedal and a processing device.

[0004] To achieve the above-mentioned purpose, the present invention provides a torsion rod of a telescopic electric pedal for an automobile and a processing device thereof, comprising a torsion rod having a hollow tube structure and having flat surfaces and through holes processed at both ends.

[0005] As a further improvement of the present invention, the processing device includes an upper pressing block and a base, a torsion bar is placed in the middle of the base through a bracket, an inner positioning mechanism is installed on the left and right sides of the base, an outer positioning mechanism is installed at the two ends of the base near the bracket, a flat stamping die is installed at the upper pressing block corresponding to the plane of the torsion bar, an inner positioning straight rod is installed at the upper pressing block corresponding to the inner positioning mechanism, and an outer positioning straight rod is installed at the upper pressing block corresponding to the outer positioning mechanism.

[0006] As a further improvement of the present invention, the internal positioning mechanism includes a right-side internal positioning mechanism and a left-side internal positioning mechanism. The right-side internal positioning mechanism includes an internal positioning block, which is connected to the base through an internal positioning slide with a reset. A spring hole is processed at the internal positioning block, and the positioning shaft and the compression spring are installed in the spring hole and positioned by a flange.

[0007] As a further improvement of the present invention, an inner positioning block inclined surface is processed on the right side of the inner positioning block.

[0008] As a further improvement of the present invention, the positioning shaft comprises from left to right a core shaft, a positioning limit section, a residual material expansion section, a guide section and a spring support surface.

[0009] As a further improvement of the present invention, the left inner positioning mechanism includes an inner positioning block, an inner positioning block inclined surface, an inner positioning slideway with reset, and a positioning shaft.

[0010] As a further improvement of the present invention, the external positioning mechanism is installed symmetrically front and back, including an external positioning block, the external positioning block is connected to the base through a reset external positioning slide rail, an external positioning rod is installed on the opposite side of the external positioning block, an external positioning mold is processed at the end of the external positioning rod, an external positioning block inclined surface is processed on the opposite side of the external positioning block, and an external positioning straight rod inclined surface is processed at the external positioning straight rod to match the external positioning block inclined surface.

[0011] As a further improvement of the present invention, a positioning straight rod inclined surface is processed at the inner positioning straight rod, and an inner positioning block inclined surface is processed on the opposite side of the inner positioning block to match the positioning straight rod inclined surface.

[0012] The beneficial effects of the present invention are:

[0013] 1. Change the torsion bar from a solid structure to a hollow tube structure. By changing its processing technology, the other parts of the car can be made lighter while ensuring the torque of the torsion bar is constant, while saving costs.

[0014] 2. The device realizes dual positioning of inner and outer molds by positioning the torsion bar, and at the same time processes the excess material expansion section at the positioning axis, so that the stamping excess can realize axial movement, ensuring the processing quality of the product and the reliable use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a torsion bar of an automobile telescopic electric pedal and a processing device of the present invention;

[0016] Figure 2 A top view of a torsion bar of a telescopic electric pedal for an automobile and a processing device of the present invention;

[0017] Figure 3 for Figure 1 A magnified view of the middle A area;

[0018] Figure 4 It is an enlarged view of the right positioning shaft of component 33;

[0019] Figure 5 It is a cross-sectional view of BB in convex 4;

[0020] Figure 6 This is the parts drawing of the torsion bar of the workpiece;

[0021] Figure 7 This is the working status diagram during stamping.

[0022] In the figure: 1. upper pressure block; 2. inner positioning straight rod; 21. positioning straight rod inclined surface; 3. right inner positioning mechanism; 31. inner positioning block; 311. spring hole; 312. inner positioning block inclined surface; 32. inner positioning slideway with reset; 33. positioning shaft; 331. core shaft; 332. positioning limit section; 333. excess material expansion section; 334. guide section; 335. spring support surface; 34. flange; 35. compression spring; 4. base; 5. outer positioning mechanism; 51. outer positioning block; 511. outer positioning block inclined surface; 52. outer positioning slideway with reset; 53. outer positioning straight rod; 531. outer positioning straight rod inclined surface; 54. outer positioning rod; 541. outer positioning die; 6. bracket; 7. torsion bar; 71. plane; 8. plane stamping die; 9. left inner positioning mechanism. DETAILED DESCRIPTION

[0023] like Figure 1-7 As shown, the automobile telescopic electric pedal torsion bar and processing device described in the present invention include a torsion bar with a hollow tube structure and flat surfaces and through holes processed at both ends.

[0024] The processing device includes an upper pressing block 1 and a base 4. A torsion bar 7 is placed in the middle of the base 4 through a bracket 6. An inner positioning mechanism is installed on the left and right sides of the base 4. An outer positioning mechanism 5 is installed at the two ends of the base 4 near the bracket 6. The outer positioning mechanism 5 is installed symmetrically in front and back, including an outer positioning block 51. The outer positioning block 51 is connected to the base 4 through an outer positioning slide rail 52 with reset. An outer positioning rod 54 is installed on the opposite side of the outer positioning block 51. An outer positioning die 541 is processed at the end of the outer positioning rod 54. An outer positioning block inclined surface 511 is processed on the opposite side of the outer positioning block 51. An outer positioning straight rod inclined surface 531 is processed at the outer positioning straight rod 53 to match the outer positioning block inclined surface 511. A plane stamping die 8 is installed at the plane 71 of the torsion bar 7 at the upper pressing block 1. An inner positioning straight rod 2 is installed at the upper pressing block 1 corresponding to the inner positioning mechanism. A positioning straight rod inclined surface 21 is processed at the inner positioning straight rod 2. An inner positioning block inclined surface 312 is processed on the opposite side of the inner positioning block 31 to match the positioning straight rod inclined surface 21. An external positioning straight rod 53 is installed at the upper pressing block 1 corresponding to the external positioning mechanism 5. The internal positioning mechanism includes a right internal positioning mechanism 3 and a left internal positioning mechanism 9. The right internal positioning mechanism 3 includes an internal positioning block 31, which is connected to the base 4 through an internal positioning slideway 32 with reset. A spring hole 311 is processed at the internal positioning block 31. The positioning shaft 33 and the compression spring 35 are installed in the spring hole 311 and positioned through the flange 34. The right side of the internal positioning block 31 is processed with an internal positioning block inclined surface 312; the positioning shaft 33 is respectively composed of a core shaft 331, a positioning limit section 332, a residual material expansion section 333, a guide section 334 and a spring support surface 335 from left to right; the left internal positioning mechanism 9 includes an internal positioning block 31, an internal positioning block inclined surface 312, an internal positioning slideway 32 with reset, and a positioning shaft 33.

[0025] The torsion bar is changed from a solid structure to a hollow tube structure, and its processing technology is changed to ensure that the torque of the torsion bar is constant, so as to make the other parts of the car lighter and save costs at the same time. The device can realize the dual positioning of the inner and outer molds while positioning the torsion bar, and at the same time process the expansion section of the residual material at the positioning axis, so that the stamping excess can realize axial movement, ensuring the processing quality of the product and the reliable use of the device.

[0026] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0027] like Figure 6 The workpiece shown is a torsion bar, and the processing target of the device is plane 71.

[0028] During operation, the torsion bar is placed on the bracket, and the upper pressing block moves downward. First, the inclined surface of the positioning straight rod touches the inclined surface of the inner positioning block, so that the inner positioning mechanism moves toward the middle direction. The spring on the right can ensure that the end face of the left torsion bar contacts the positioning limit segment, and at the same time, flexible positioning is achieved to ensure accurate positioning when there is a certain tolerance in the length of the torsion bar. At the same time, the mandrel enters the inner hole of the torsion bar and is used as an inner mold; the upper pressing block continues to move downward, and the inclined surface of the outer positioning straight rod contacts the inclined surface of the outer positioning block, so that the outer positioning mechanism moves toward the torsion bar until the outer positioning mold contacts the outer circumference of the torsion bar. The upper pressing block moves downward again, and the flat stamping die stamps the torsion bar (see Figure 7 ), during stamping, the torsion bar is positioned by the inner and outer dies, which ensures the processing accuracy. The deformation margin produced by stamping is displaced axially to reach the expansion section of the residual material. The upper pressing block moves upward, the components are reset, and the processed torsion bar is taken out.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A torsion bar and processing device for a telescopic electric pedal of an automobile, characterized in that: The torsion bar is a hollow tube structure with flat surfaces and through holes processed at both ends.

2. The automobile telescopic electric pedal torsion bar and processing device according to claim 1, characterized in that: The processing device comprises an upper pressing block (1) and a base (4), a torsion bar (7) is placed in the middle of the base (4) via a bracket (6), an inner positioning mechanism is installed on the left and right sides of the base (4), an outer positioning mechanism (5) is installed on the base (4) near the two ends of the bracket (6), a plane stamping die (8) is installed on the upper pressing block (1) at a plane (71) corresponding to the torsion bar (7), an inner positioning straight rod (2) is installed on the upper pressing block (1) at a position corresponding to the inner positioning mechanism, and an outer positioning straight rod (53) is installed on the upper pressing block (1) at a position corresponding to the outer positioning mechanism (5).

3. The automobile telescopic electric pedal torsion bar and processing device according to claim 2, characterized in that: The inner positioning mechanism comprises a right inner positioning mechanism (3) and a left inner positioning mechanism (9); the right inner positioning mechanism (3) comprises an inner positioning block (31); the inner positioning block (31) is connected to the base (4) via an inner positioning slideway (32) with a reset function; a spring hole (311) is processed at the inner positioning block (31); a positioning shaft (33) and a compression spring (35) are installed in the spring hole (311) and positioned via a flange (34).

4. The automobile telescopic electric pedal torsion bar and processing device according to claim 3, characterized in that: An inner positioning block inclined surface (312) is processed on the right side of the inner positioning block (31).

5. The automobile telescopic electric pedal torsion bar and processing device according to claim 3, characterized in that: The positioning shaft (33) comprises, from left to right, a core shaft (331), a positioning limit section (332), a residual material expansion section (333), a guide section (334) and a spring support surface (335).

6. The automobile telescopic electric pedal torsion bar and processing device according to claim 3, characterized in that: The left inner positioning mechanism (9) comprises an inner positioning block (31), an inner positioning block inclined surface (312), an inner positioning slideway with reset function (32), and a positioning shaft (33).

7. The automobile telescopic electric pedal torsion bar and processing device according to claim 2, characterized in that: The external positioning mechanism (5) is installed symmetrically in front and back, and comprises an external positioning block (51). The external positioning block (51) is connected to the base (4) via a reset external positioning slide rail (52). An external positioning rod (54) is installed on the opposite side of the external positioning block (51). An external positioning mold (541) is processed at the end of the external positioning rod (54). An external positioning block inclined surface (511) is processed on the opposite side of the external positioning block (51). An external positioning straight rod inclined surface (531) is processed on the external positioning straight rod (53) to match the external positioning block inclined surface (511).

8. The automobile telescopic electric pedal torsion bar and processing device according to claim 2, characterized in that: A positioning straight rod inclined surface (21) is processed on the inner positioning straight rod (2), and an inner positioning block inclined surface (312) is processed on the opposite side of the inner positioning block (31) to match the positioning straight rod inclined surface (21).

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