Surface grooving mechanism for spline shaft machining

Abstract

The utility model provides a surface grooving mechanism for spline shaft machining, which belongs to the field of spline shaft machining and comprises a base, a support is fixed on the base, grooving equipment is mounted on the base, and a three-jaw chuck is rotatably mounted on the base. The limiting mechanism can adjust the limiting position according to the height of the spline shaft and comprises an arc-shaped plate capable of ascending and descending, three electric push rods are fixed to the arc-shaped plate, U-shaped blocks are fixed to the output ends of the electric push rods, and limiting rollers capable of abutting against the spline shaft are installed on the U-shaped blocks. And three shaft rods are rotatably arranged on the base in a penetrating mode, screw rods are fixed to the upper ends of the three shaft rods, and the screw rods penetrate through the arc-shaped plate and are in threaded connection with the arc-shaped plate. The limiting rollers abut against the outer wall of the spline shaft, so that the spline shaft can be limited in the middle and in rolling contact with the spline shaft, abrasion to the spline shaft is reduced, and machining stability of the spline shaft can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of spline shaft processing, in particular to a surface grooving mechanism for spline shaft processing. Background Art

[0002] The spline shaft is a type of mechanical transmission. Like the flat key, semicircular key and bevel key, the spline shaft transmits mechanical torque. There is a longitudinal keyway on the surface of the shaft, and the rotating parts on the shaft also have corresponding keyways, which can keep rotating synchronously with the shaft. While rotating, some can also slide longitudinally on the shaft, such as the gearbox shift gear.

[0003] Most of the traditional surface grooving devices for spline shaft processing fix the two ends of the spline shaft and use a milling cutter to groove the surface of the spline shaft. When grooving some spline shafts with longer lengths, only the two ends of the spline shaft are fixed, and the stability of the spline shaft is poor. It is very easy to cause the spline shaft to shift or shake during grooving, resulting in poor dimensional accuracy of the spline shaft slot and poor dimensional qualification rate, which is not conducive to use by staff. For this reason, the present application proposes a surface grooving mechanism for spline shaft processing. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a surface grooving mechanism for processing a spline shaft, which limits the position of the spline shaft by arranging an adjustable limiting roller to ensure its stability during processing.

[0005] The embodiment of the utility model provides a surface grooving mechanism for processing a spline shaft, comprising:

[0006] A base, on which a bracket is fixed, on which a slotting device is installed and a three-jaw chuck is rotatably installed;

[0007] A limiting mechanism capable of adjusting the limiting position according to the height of the spline shaft, the limiting mechanism comprising a lifting and lowering arc plate, three electric push rods fixed on the arc plate, a U-shaped block fixed on the output end of the electric push rod, and a limiting roller capable of counteracting the spline shaft installed on the U-shaped block.

[0008] Furthermore, a hydraulic cylinder is installed on the bracket, and a tightening cone for tightening the upper end of the spline shaft is installed at the output end of the hydraulic cylinder.

[0009] Furthermore, three rotatable shafts are provided through the base, and screws are fixed to the upper ends of the three shafts. The screws pass through the arc-shaped plate and are threadedly connected thereto.

[0010] Furthermore, it also includes a driving mechanism for driving the three shafts to rotate, the driving mechanism includes a driving cover installed at the bottom of the base, and the three shafts are fixed with transmission wheels, and the three transmission wheels are connected by belts. A motor is fixed in the driving cover, and the output end of the motor is fixedly connected to one of the shafts.

[0011] Furthermore, four support blocks are fixed to the bottom of the base, and the four support blocks are distributed in a rectangular shape.

[0012] Furthermore, the arc plate is coaxially arranged with the three-jaw chuck.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The limiting roller of the utility model abuts against the outer wall of the spline shaft, so that the spline shaft can be limited in the middle and in rolling contact with the spline shaft, thereby reducing the wear on the spline shaft and ensuring the stability of the spline shaft processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a surface grooving mechanism for processing a spline shaft described in an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of a vertical tube in a surface grooving mechanism for processing a spline shaft described in an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of a vertical tube in a surface grooving mechanism for processing a spline shaft described in an embodiment of the utility model.

[0018] In the above drawings: 1 base, 2 bracket, 3 three-jaw chuck, 4 slotting equipment, 5 hydraulic cylinder, 6 arc plate, 7 screw, 8 shaft, 9 electric push rod, 10 support block, 11 driving mechanism, 12 U-shaped block, 13 limiting roller. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 3 As shown, the embodiment of the utility model provides a surface grooving mechanism for spline shaft processing, comprising:

[0021] A base 1, four support blocks 10 are fixed at the bottom of the base 1, and the four support blocks 10 are distributed in a rectangular shape; a bracket 2 is fixed on the base 1, a slotting device 4 and a three-jaw chuck 3 are rotatably installed on the base 1, and the slotting device 4 is a prior art, which drives the milling cutter to rotate by a rotating shaft to perform slotting; wherein, a hydraulic cylinder 5 is installed on the bracket 2, and a tightening cone for tightening the upper end of the spline shaft is installed at the output end of the hydraulic cylinder 5, and the hydraulic cylinder 5 drives the tightening cone to move downward and abut against the spline shaft, and the three-jaw chuck 3 can clamp the bottom of the spline shaft, so that the upper and lower ends of the spline shaft can be stably clamped, and the short spline shaft can be stably clamped and limited, but the stability of the middle part of the spline shaft cannot be guaranteed for the longer spline shaft;

[0022] In order to ensure the stability of the middle part of the spline shaft, a limit mechanism is provided for adjusting the limit position according to the height of the spline shaft. The limit mechanism includes an arc plate 6 that can be lifted and lowered. Three shaft rods 8 that are rotatably arranged are penetrated on the base 1. Screw rods 7 are fixed to the upper ends of the three shaft rods 8. The screw rods 7 penetrate the arc plate 6 and are threadedly connected thereto. The opening direction of the arc plate 6 is arranged relative to the slotting device 4. It also includes a driving mechanism 11 for driving the three shaft rods 8 to rotate. The driving mechanism 11 includes a driving cover installed at the bottom of the base 1. Transmission wheels are fixed on the three shaft rods 8. The three transmission wheels are connected by belts. A motor is fixed in the driving cover. The output end of the motor is fixedly connected to one of the shaft rods 8. In this way, the three shaft rods 8 can rotate simultaneously. The driving mechanism 11 is a prior art.

[0023] The arc plate 6 is coaxially arranged with the three-jaw chuck 3, and three electric push rods 9 are fixed on the arc plate 6, and the electric push rods 9 are distributed in an equilateral triangle; a U-shaped block 12 is fixed at the output end of the electric push rod 9, and a limiting roller 13 capable of abutting against the spline shaft is installed on the U-shaped block 12;

[0024] When grooving a relatively long spline shaft, the motor drives the shaft 8 to rotate, and under the drive of the transmission wheel and the belt, the three shafts 8 and the three screws 7 rotate, so that the arc plate 6 can move upward or downward, and when adjusted to a suitable position, the electric push rod 9 is started to drive the U-shaped block 12 and the limiting roller 13 to move, so that the limiting roller 13 is against the outer wall of the spline shaft, so that the spline shaft can be limited in the middle and rolling contact with the spline shaft can be achieved, thereby reducing the wear on the spline shaft and ensuring the stability of the spline shaft processing;

[0025] Since the arc-shaped plate 6 can move, it can be used to process and limit the spline shafts of different lengths, and has good applicability and convenient adjustment.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A surface grooving mechanism for spline shaft processing, characterized in that: include: A base (1), a bracket (2) is fixed on the base (1), a slotting device (4) is installed on the base (1) and a three-jaw chuck (3) is rotatably installed; A limiting mechanism capable of adjusting a limiting position according to the height of a spline shaft, the limiting mechanism comprising a lifting and lowering arc plate (6), three electric push rods (9) being fixed on the arc plate (6), a U-shaped block (12) being fixed at the output end of the electric push rod (9), and a limiting roller (13) capable of abutting against the spline shaft being installed on the U-shaped block (12).

2. A surface grooving mechanism for processing a spline shaft according to claim 1, characterized in that: in: A hydraulic cylinder (5) is installed on the bracket (2), and a tightening cone for tightening the upper end of the spline shaft is installed at the output end of the hydraulic cylinder (5).

3. A surface grooving mechanism for processing a spline shaft according to claim 1, characterized in that: in: The base (1) is provided with three rotatably arranged shaft rods (8), the upper ends of the three shaft rods (8) are all fixed with screw rods (7), and the screw rods (7) pass through the arc plate (6) and are threadedly connected thereto.

4. A surface grooving mechanism for processing a spline shaft according to claim 3, characterized in that: in: It also includes a driving mechanism (11) for driving the three shafts (8) to rotate, the driving mechanism (11) including a driving cover mounted on the bottom of the base (1), a transmission wheel fixed on each of the three shafts (8), the three transmission wheels being connected via a belt, a motor fixed in the driving cover, and an output end of the motor being fixedly connected to one of the shafts (8).

5. The surface grooving mechanism for processing a spline shaft according to claim 1, characterized in that: in: Four support blocks (10) are fixed to the bottom of the base (1), and the four support blocks (10) are distributed in a rectangular shape.

6. A surface grooving mechanism for processing a spline shaft according to claim 1, characterized in that: in: The arc-shaped plate (6) is coaxially arranged with the three-jaw chuck (3).

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