Tool for controlling phases of spline teeth and notches after spline shaft milling

Abstract

The utility model discloses a tool for controlling phases of spline teeth and notches after spline shaft milling, which relates to the field of spline shaft processing, and comprises a spline shaft to be processed, the bottom of the spline shaft to be processed is provided with a threaded section, and the threaded section is provided with a notch; the driving clamping ring is arranged on an upper opening of the spline shaft to be machined in a sleeving mode, a plurality of fixing holes are formed in the driving clamping ring in the radial direction in a penetrating mode and used for being matched with fixing bolts to lock the spline shaft to be machined and the driving clamping ring, and a connecting rod is fixed to the outer wall of the driving clamping ring; the notch positioning sleeve is arranged on one side of the bottom plate, and a spline shaft to be machined is inserted into an inner hole of the notch positioning sleeve through the threaded section, so that a positioning bulge arranged on the wall of the inner hole is matched with the notch for positioning; and the positioning rod is arranged on the other side of the bottom plate and is used for contacting and positioning the connecting rod. The problem of phase tool setting is solved, manual intervention tool setting in a machine is changed into tool limiting outside the machine and auxiliary equipment is used for fixing the driving block, manual intervention is eradicated, and the phase control capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of spline shaft machining, and specifically to a tooling for controlling the phase of the spline teeth and notches after the spline shaft is milled. Background Technology

[0002] In the existing spline milling process, it is impossible to effectively control the phase relationship between the spline and the notch after the spline shaft is milled. It is necessary to visually set the tool one by one to ensure that the starting position of the hob is consistent with the notch when it bites in.

[0003] like Figure 1 , 2 As shown, after milling the part to be machined (1'), the milled spline (2') and the thread notch (3') have a phase relationship. It should be ensured that the two are within 1° in the circumferential direction, that is, the phase difference (5') between the spline teeth and the notch is ≤1°. Since the milling feed direction is based on the notch end as the initial bite position, the notch end cannot be used as the direct positioning surface, otherwise the spline hob (4') will interfere. Therefore, visual tool setting is currently adopted.

[0004] It has the following defects:

[0005] 1. Poor accuracy control of phase difference after visual tool setting

[0006] Visual tool setting involves significant human intervention, and different personnel, machines, and hobs can all have an impact. Its control over the required "phase difference ±1°" is too poor.

[0007] 2. Waste of production capacity

[0008] Compared to other front axle parts that do not require phase control and only require loading and unloading, front axles with phase control require additional manual tool setting, which requires more personnel and results in a situation where the machine is waiting for the workers, affecting the production output of the equipment.

[0009] 3. Affects tool compensation

[0010] Spline hobs experience wear during machining, requiring periodic tool compensation and tooth replacement. This process directly impacts manual visual tool setting, resulting in discrepancies between the tool setting points and the previous ones. Utility Model Content

[0011] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a tooling for controlling the phase of the spline teeth and notch after the spline shaft is milled, thereby solving the phase tool setting problem. The tool setting is changed from manual intervention inside the machine to external tooling limit and equipment fixed drive block, so as to eliminate manual intervention and improve the phase control capability.

[0012] The purpose of this utility model is achieved through the following technical solution: This tooling for controlling the phase of the spline teeth and the notch after milling the spline shaft includes:

[0013] The splined shaft to be machined has a threaded section at its bottom, and a notch is opened on the threaded section.

[0014] A drive clamping ring is fitted onto the upper opening of the spline shaft to be processed. Several fixing holes are opened along the radial direction of the drive clamping ring to lock the spline shaft to be processed and the drive clamping ring together with fixing bolts. A connecting rod is fixed on the outer wall of the drive clamping ring.

[0015] A notched positioning sleeve is disposed on one side of the base plate. The splined shaft to be machined is inserted into the inner hole of the notched positioning sleeve through the threaded section, so that the positioning protrusion disposed on the inner hole wall cooperates with the notch for positioning; and

[0016] The positioning rod, located on the other side of the base plate, is used to contact and position the connecting rod.

[0017] As a further technical solution, the number of positioning protrusions and notches is two.

[0018] As a further technical solution, three fixing holes are provided on the drive clamp ring.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The positioning protrusion and the notch at the bottom of the spline shaft are matched for positioning, which eliminates the interference of human factors and improves the stability of product manufacturing process control.

[0021] 2. Material changeover losses are moved from inside the machine to outside, with tooling positioning and assembly performed outside the machine, so that no time is wasted during material changeover and production losses are reduced;

[0022] 3. The tooling investment cost is small, and compared with the quality loss, output loss and process cost loss caused by phase defects, the cost-effectiveness is extremely high. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure during processing using existing technology.

[0024] Figure 2 This is a schematic diagram of a structure that generates a phase difference after processing using existing technology.

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 4 This is a schematic diagram of the drive clamping ring in this utility model.

[0027] Figure 5 This is a schematic diagram of the main structure of this utility model.

[0028] Figure 6 for Figure 5 AA sectional view.

[0029] Explanation of reference numerals in the attached drawings: 1' part to be machined, 2' milled spline, 3' thread notch, 4' spline hob, 5' phase difference between spline teeth and notch;

[0030] Drive clamping ring 1, connecting rod 11, fixing hole 12, fixing bolt 13, base plate 2, notched positioning sleeve 3, inner hole 31, positioning protrusion 32, positioning rod 4, spline shaft to be processed 5, notch 51, upper opening 52. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings:

[0032] Example: As attached Figures 3-6 As shown, this tooling for controlling the phase of the spline teeth and the notch after the spline shaft is milled includes a drive clamping ring 1, a connecting rod 11, a fixing hole 12, a fixing bolt 13, a base plate 2, a notch positioning sleeve 3, an inner hole 31, a positioning protrusion 32, a positioning rod 4, a spline shaft to be processed 5, a notch 51, and an upper opening 52.

[0033] Reference Appendix Figure 5 , 6 The splined shaft 5 to be machined has a threaded section at its bottom, with two symmetrical notches 51 on the threaded section. A notched positioning sleeve 3 is fixed on the base plate 2. The notched positioning sleeve 3 has an inner hole 31 for the threaded section to be inserted. At the same time, two positioning protrusions 32 are symmetrically arranged on the wall of the inner hole 31. The positioning protrusions 32 adopt a contour-following structure, which can correspond to and cooperate with the notches 51 to achieve positioning of the splined shaft 5 to be machined.

[0034] like Figure 3 , 4 As shown, the drive clamping ring 1 is fitted onto the upper opening 52 of the spline shaft 5 to be processed. Three fixing holes 12 are radially opened through the drive clamping ring 1. The fixing holes 12 can be used with fixing bolts 13 to lock the spline shaft 5 to be processed and the drive clamping ring 1. In addition, a connecting rod 11 is fixed on the outer wall of the drive clamping ring 1. A positioning rod 4 is also fixed on the base plate 2. After the spline shaft 5 to be processed and the notch positioning sleeve 3 are positioned, the connecting rod 11 of the drive clamping ring 1 can be rotated so that the connecting rod 11 rests against the positioning rod 4 to complete the positioning.

[0035] The working process of this utility model:

[0036] Before milling the spline shaft, align the threaded section of the spline shaft 5 to be machined with the notch positioning sleeve 3 and fit it in, so that the positioning protrusion 32 and the notch 51 are engaged and positioned. At this time, the circumferential position limit of the part has been achieved. Then, fit the drive clamping ring 1 into the upper opening 52 of the spline shaft 5 to be machined, and then rotate the drive clamping ring 1 until the connecting rod 11 of the drive clamping ring 1 contacts and positions with the positioning rod 4. Subsequently, insert the fixing bolt 13 into the fixing hole 12 to tighten the drive clamping ring 1 and the spline shaft 5 to be machined. At this time, the connecting rod 11 of the drive clamping ring 1 and the notch 51 of the spline shaft 5 to be machined have formed a uniform relative position. The spline shaft 5 to be machined, together with the drive clamping ring 1, can be removed from the tooling and loaded onto the spline milling machine as a whole. Since the loading position of the part is fixed, the initial bite position of the spline hob is also fixed. After the final spline milling, the spline teeth and the notch position are fixed.

[0037] This invention employs tooling positioning instead of visual positioning, and external positioning instead of internal positioning. The positioning mechanism utilizes a contour-following design principle, with the internal limit drive equivalently converted to the external tooling positioning mechanism. This ensures that the spline hob engages at a consistent position each time parts are loaded and unloaded for processing, effectively and stably controlling the relative position of the notch and spline teeth.

[0038] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A tooling for controlling the phase of the spline teeth and the notch after milling a spline shaft, characterized in that, include: The spline shaft (5) to be processed has a threaded section at its bottom, and a notch (51) is opened on the threaded section; A drive clamping ring (1) is fitted onto the upper opening (52) of the spline shaft (5) to be processed. Several fixing holes (12) are opened radially through the drive clamping ring (1) to cooperate with the fixing bolts (13) to lock the spline shaft (5) to be processed and the drive clamping ring (1). A connecting rod (11) is fixed on the outer wall of the drive clamping ring (1). A notch positioning sleeve (3) is provided on one side of the base plate (2). The spline shaft (5) to be machined is inserted into the inner hole (31) of the notch positioning sleeve (3) through the threaded section, so that the positioning protrusion (32) provided on the wall of the inner hole (31) cooperates with the notch (51) for positioning; and The positioning rod (4) is set on the other side of the base plate (2) and is used to contact and position the connecting rod (11).

2. The tooling for controlling the phase of the spline teeth and notch after milling the spline shaft according to claim 1, characterized in that: The number of positioning protrusions (32) and notches (51) is two.

3. The tooling for controlling the phase of the spline teeth and notch after milling the spline shaft according to claim 1, characterized in that: The drive clamp (1) has three fixing holes (12).

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