Overweight shaft type bevel gear machining method

Abstract

The invention discloses a machining method for an overweight shaft type bevel gear, and belongs to the field of gear manufacturing. The machining method of the overweight bevel gear comprises the steps that before a part is installed, an auxiliary supporting mechanism is installed in front of a numerical control indexing mechanism, and the rotation center line of the numerical control indexing mechanism and the supporting center line of the auxiliary supporting mechanism are made to be collinear through a tool shaft; parts are jointly supported and fixed through the numerical control indexing mechanism and the auxiliary supporting mechanism; and machining the part. According to the scheme, machining of the overweight shaft type bevel gear can be achieved under the condition that modification is as small as possible.

Description

Technical Field

[0001] The present application belongs to the field of gear manufacturing, and in particular, the present application relates to a method for machining an ultra-heavy shaft-type bevel gear. Background Art

[0002] There are many ways to process bevel gears, and each is suitable for different scenarios. At present, with the gradual popularization and promotion of five-axis machining centers, some large bevel gears have gradually transitioned from the original processing method to the milling method of machining centers.

[0003] Among large bevel gears, bevel gears with longer shafts are generally fixed by horizontal clamping and are linked to the CNC indexing mechanism during processing.

[0004] However, when the weight of the processed parts exceeds the upper limit of the load-bearing capacity of the CNC indexing mechanism, the operation accuracy of the CNC indexing mechanism will decrease, and even damage will occur to the CNC indexing mechanism, making it impossible to process the parts.

[0005] Therefore, other accessories are needed to support it.

[0006] However, when using an auxiliary support mechanism to share the weight of a part, there is currently no solution to the problem of how to ensure that the clamping portion of the auxiliary support mechanism is coaxial with the clamping portion of the CNC dividing mechanism. Summary of the invention

[0007] The purpose of the invention is to develop a convenient, fast and low-cost processing method suitable for processing super-heavy shaft bevel gear parts.

[0008] The solution of this application example is implemented through the following contents.

[0009] A method for processing an extra-heavy bevel gear comprises:

[0010] Before installing the parts, install the auxiliary support mechanism in front of the CNC indexing mechanism, and make the rotation center line of the CNC indexing mechanism and the support center line of the auxiliary support mechanism collinear through the tooling axis;

[0011] The parts are supported and fixed by the CNC indexing mechanism and the auxiliary supporting mechanism;

[0012] and, machining parts.

[0013] Optionally, the processing method also includes: a step of manufacturing a tooling shaft.

[0014] Optionally, the auxiliary support mechanism includes:

[0015] Base;

[0016] A support ring, a portion of which is fixed to the base; and

[0017] A plurality of fixing members are connected to the support ring and are used to restrict objects from penetrating into the ring.

[0018] Optionally, the fixing member has a connecting section, which is a threaded column provided with an external thread and is threadedly connected to the supporting ring.

[0019] Optionally, the plurality of fixing members are distributed at equal angles relative to the center of the support ring.

[0020] Optionally, the position of the support ring on the worktable of the machining center is adjustable, so that the distance relative to the numerical control indexing mechanism can be changed while keeping the center lines collinear.

[0021] Optionally, the workbench has a plurality of mounting parts, and the auxiliary supporting mechanism is detachably connected to the mounting parts.

[0022] Optionally, the support ring is slidably arranged on a workbench of a machining center.

[0023] Optionally, the worktable of the machining center is connected with a slide rail, and the support ring is slidably matched with the slide rail.

[0024] A method for processing an extra-heavy bevel gear comprises:

[0025] Make tooling shafts;

[0026] The CNC indexing mechanism is installed on the workbench of the five-axis machining center, and the tooling axis is installed in the center of the CNC indexing mechanism;

[0027] Align the tooling axis so that the center line of the tooling axis coincides with the rotation center of the CNC indexing mechanism;

[0028] Install the auxiliary support mechanism on the workbench of the machining center, and adjust the height and position of the auxiliary support mechanism so that the support center of the auxiliary support mechanism coincides with the rotation center of the CNC indexing mechanism;

[0029] Remove the tooling axis and load the part into the center of the auxiliary support mechanism and CNC indexing mechanism; and

[0030] Processing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] For a clearer explanation, the following briefly introduces the drawings required for the description.

[0032] Figure 1 It is a structural schematic diagram of the existing bevel gear processing method;

[0033] Figure 2 A schematic diagram of the assembly and use of the tooling axis in the example of the present application to align the auxiliary support mechanism with respect to the numerical control indexing mechanism of the machining center;

[0034] Figure 3 Schematic diagram of the structure of the auxiliary support mechanism in the example of this application at two different viewing angles. Figure 4 This is a process flow chart of the processing method of the extra-heavy bevel gear in the example of this application. DETAILED DESCRIPTION

[0035] Previously, when the applicant used a five-axis machining center to machine bevel gears, the process was usually carried out in the following manner.

[0036] See also Figure 1 , which records the relative positions and posture structure diagram of the five-axis machining center 1, the CNC indexing mechanism 2 and the shaft bevel gear 3 during the machining process.

[0037] like Figure 1 As shown, the CNC indexing mechanism 2 is installed on a five-axis machining center, and the shaft-type bevel gear 3 is installed and fixed on the CNC indexing mechanism 2.

[0038] However, bevel gears with longer shafts are generally clamped horizontally and processed by a CNC indexing mechanism. The weight of bevel gears with longer shafts is large, and combined with their horizontal clamping, they are prone to shaking. In even more serious cases, the bevel gears may even damage the CNC indexing mechanism 2.

[0039] Analyzing the above problems, we can know that the causes of this problem are:

[0040] Bevel gears have a larger mass and receive less support.

[0041] Therefore, a possible solution to the above problem is to modify the CNC indexing mechanism so that it can support heavier parts. However, some problems with the above solution are that the modification cost is high, the implementation is difficult, and it may be difficult to implement.

[0042] In view of this, in the example, the applicant chooses to implement a solution to the above problem in a lower cost and more convenient way.

[0043] In general, an exemplary solution of the present application is to add an auxiliary support mechanism so that the auxiliary support mechanism can share the larger / excessive gravity applied to the numerical control indexing mechanism by the longer shaft bevel gear and borne by the numerical control indexing mechanism.

[0044] It can be known that when processing parts in such equipment, the parts are carried by the CNC indexing mechanism and the auxiliary support mechanism, so that the gravity borne by the CNC indexing mechanism is greatly reduced. Therefore, the CNC indexing mechanism is less likely to be damaged or lose precision.

[0045] Furthermore, in order to ensure that the part is in the correct posture when supported, a component is also provided in the example to ensure that the CNC indexing mechanism 2 and the auxiliary support mechanism 6 have a colinear rotation center / symmetry center. In this way, when the part to be processed is installed in place, it can be accurately supported by the CNC indexing mechanism and the auxiliary support mechanism.

[0046] Therefore, in the embodiment, the machining system is further equipped with a tooling axis 4, which is used to adjust the auxiliary support mechanism so that the numerical control indexing mechanism and the auxiliary support mechanism are concentric.

[0047] See also Figure 2 , which discloses a structural schematic diagram of using a tooling axis to align and align a CNC indexing mechanism and an auxiliary supporting mechanism.

[0048] exist Figure 2 In the process, the tooling axis penetrates into the CNC indexing mechanism and the auxiliary support mechanism, so that the position and posture of the auxiliary support mechanism conform to the position, posture and structure of the CNC indexing mechanism, thereby achieving the effect of aligning the two centers.

[0049] In order to reduce the undesired movement, shaking or vibration of the parts during the supporting process, the auxiliary supporting mechanism can be provided with a fixing structure to fix the parts.

[0050] See also Figure 2 and Figure 3 , the auxiliary support mechanism can have the following structure.

[0051] The auxiliary support mechanism comprises: a base 101; a support ring 102, a partial arc section of which is fixed to the base; and a plurality of fixing members 103, which are connected to the support ring and are used to limit objects from penetrating into the ring.

[0052] In some examples, the fixing member has a connecting section, which is a threaded column provided with an external thread and is threadedly connected to the support ring. In order to provide a balanced tightening force, all the fixing members can be distributed at equal angles relative to the center of the support ring.

[0053] In addition, since the posture of the auxiliary support mechanism, such as height and position, may need to be adjusted during the process of aligning the auxiliary support mechanism, the adjustment mechanism can be configured as needed.

[0054] For example, the position of the support ring on the worktable 5 of the machining center 1 is adjustable, so that the distance relative to the numerical control indexing mechanism can be changed while keeping the center lines collinear.

[0055] As an alternative example, the workbench has a plurality of mounting portions (mounting screw holes), and the auxiliary support mechanism is detachably connected to the mounting portions—for example, it can be threadedly connected to the screw holes by bolts.

[0056] In another alternative example, the support ring is slidably arranged on the workbench of the machining center. When implemented, the workbench of the machining center may be connected with a slide rail, and the support ring and the slide rail may be slidably matched.

[0057] Accordingly, in the embodiment, the applicant proposes a method for processing an extra-heavy bevel gear.

[0058] The method includes: installing an auxiliary support mechanism in front of a numerical control indexing mechanism before installing the part, and making the rotation center line of the numerical control indexing mechanism and the support center line of the auxiliary support mechanism collinear through a tooling axis; jointly supporting and fixing the part through the numerical control indexing mechanism and the auxiliary support mechanism; and processing the part.

[0059] In the above implementation process, the tooling shaft can be pre-manufactured, or adjusted and manufactured on site as needed. Therefore, in some embodiments, the processing method of the super-heavy bevel gear also includes: the step of manufacturing the tooling shaft.

[0060] In addition, see Figure 4 In a more specific optional embodiment, without loss of generality, the processing method of the super-heavy bevel gear includes:

[0061] S101 makes tooling shaft;

[0062] S102 installs the CNC indexing mechanism on the workbench of the five-axis machining center, and the tooling axis is installed in the center of the CNC indexing mechanism;

[0063] S103 aligns the tooling axis so that the center line of the tooling axis coincides with the rotation center of the CNC indexing mechanism;

[0064] S104: installing the auxiliary support mechanism on the workbench of the machining center, and adjusting the height and position of the auxiliary support mechanism so that the support center of the auxiliary support mechanism coincides with the rotation center of the numerical control indexing mechanism;

[0065] S105 removes the tooling axis and loads the part into the center of the auxiliary support mechanism and the CNC indexing mechanism; and

[0066] S106 machining parts.

[0067] The above describes in detail the structure, features and effects of the present application based on the embodiments shown in the drawings. The above are only preferred embodiments of the present application, but the present application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of the present application, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present application.

Claims

1. A method for processing an extra-heavy bevel gear, characterized in that: include: Before installing the parts, install the auxiliary support mechanism in front of the CNC indexing mechanism, and make the rotation center line of the CNC indexing mechanism and the support center line of the auxiliary support mechanism collinear through the tooling axis; The parts are supported and fixed by the CNC indexing mechanism and the auxiliary supporting mechanism; and processing the parts.

2. The method for processing an extra-heavy bevel gear according to claim 1, characterized in that: The processing method also includes: a step of manufacturing a tooling shaft.

3. The method for processing an extra-heavy bevel gear according to claim 1, characterized in that: The auxiliary support mechanism comprises: Base; A support ring, a portion of which is fixed to the base; and A plurality of fixing members are connected to the support ring and are used to restrict objects from penetrating into the ring.

4. The method for processing an extra-heavy bevel gear according to claim 3, characterized in that: The fixing member has a connecting section, which is a threaded column provided with an external thread and is threadedly connected to the supporting ring.

5. The method for processing an extra-heavy bevel gear according to claim 4, characterized in that: The plurality of fixing members are distributed at equal angles relative to the center of the support ring.

6. The method for processing an extra-heavy bevel gear according to claim 1, characterized in that: The position of the support ring on the worktable of the machining center is adjustable, so that the distance relative to the numerical control indexing mechanism can be changed while keeping the center lines collinear.

7. The method for processing an extra-heavy bevel gear according to claim 6, characterized in that: The workbench has a plurality of mounting parts, and the auxiliary supporting mechanism is detachably connected to the mounting parts.

8. The method for processing an extra-heavy bevel gear according to claim 6, characterized in that: The support ring is slidably arranged on the workbench of the machining center.

9. The method for processing an extra-heavy bevel gear according to claim 8, characterized in that: The working table of the machining center is connected with a slide rail, and the support ring is slidably matched with the slide rail.

10. A method for processing an extra-heavy bevel gear, characterized in that: include: Make tooling shafts; The CNC indexing mechanism is installed on the workbench of the five-axis machining center, and the tooling axis is installed in the center of the CNC indexing mechanism; Align the tooling axis so that the center line of the tooling axis coincides with the rotation center of the CNC indexing mechanism; Install the auxiliary support mechanism on the workbench of the machining center, and adjust the height and position of the auxiliary support mechanism so that the support center of the auxiliary support mechanism coincides with the rotation center of the CNC indexing mechanism; Remove the tooling shaft and load the part into the center of the auxiliary support mechanism and CNC indexing mechanism; and, machining parts.

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