Self-adaptive machining method of gear shaping machine

Abstract

The invention discloses a self-adaptive machining method of a gear shaping machine. The method comprises the following steps that display items of a current large stroke and a current small stroke and input items of a target large stroke and a target small stroke are added in a numerical control machining program of the gear shaping machine; during remodeling machining, an input mode is judged according to the states of the target large-stroke set value and the target small-stroke set value, and the target large-stroke set value and the target small-stroke set value are input into a numerical control machining program of the gear shaping machine; and after the numerical control system of the gear shaping machine executes the operation, the numerical control system of the gear shaping machine automatically adjusts the large stroke and the small stroke of the gear shaping machine to the set values of the current target large stroke and the target small stroke, and then machining is conducted. After a worker inputs necessary machining information through a program interface before machining, a numerical control system can automatically calculate large and small stroke values suitable for current machining and control a mechanical part to move to a set position to start machining, the machining stroke is automatically adjusted to adapt to the current machining condition, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of gear shaping machine technology, and in particular to an adaptive machining method for gear shaping machines. Background Technology

[0002] In traditional gear shaping machines, the large stroke adjustment (stroke adjustment) and small stroke adjustment (tool position adjustment) during gear shaping are both set as two separate mechanisms on the machine tool, and adjustments mostly require manual intervention. Currently, the tooling height during gear shaping machine changeovers also needs to be carefully checked against the instruction manual to ensure it meets the current machine tool's processing conditions, resulting in low production efficiency.

[0003] For example, CN201521071148.0, which discloses an automatic adjustment device for the stroke of a gear hobbing machine, utilizes the rotation of a servo motor to achieve automatic adjustment of the stroke (i.e., the large stroke) of the gear hobbing machine.

[0004] Our company's publicly disclosed CN202320368895.9, "An Automatic Adjustment Mechanism for Gear Shaper Tool Position," utilizes the rotation of the gear shaper tool holder servo motor to achieve automatic adjustment of the gear shaper tool position (i.e., short stroke).

[0005] The existing gear shaper's large stroke adjustment and small stroke adjustment are independent. When changing gears, it cannot automatically calculate the appropriate large and small stroke values ​​for the current machining process. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to solve the problems existing in the background technology mentioned above and provide an adaptive machining method for gear hobbing machines. When the worker inputs the necessary machining information through the program interface before machining, the CNC system can automatically calculate the large and small stroke values ​​suitable for the current machining and control the movement of mechanical parts to reach the set position to start machining.

[0007] To achieve the above-mentioned technical features, the objective of this invention is as follows: an adaptive machining method for a gear shaper, comprising the following steps: Step 1: Add display items for the current large stroke and current small stroke, as well as input items for the target large stroke and target small stroke to the CNC machining program of the gear shaper; Step 2: During the changeover process, determine the input method based on the status of the target large stroke setting value and the target small stroke setting value, and input the target large stroke setting value and the target small stroke setting value into the gear shaping machine CNC machining program; Step 3: After the gear shaper CNC system executes the command, it automatically adjusts the gear shaper's large and small strokes to the current target large and small stroke settings before proceeding with the machining.

[0008] When the required target large stroke and target small stroke settings are known, enter the corresponding settings in the target large stroke and target small stroke input fields respectively.

[0009] When the target maximum and minimum stroke settings are unknown, and the tooling height is unknown, known data including workpiece information, tooling information, machining information, and tooling information are input, the target maximum and minimum stroke settings that meet the machining conditions are calculated.

[0010] The workpiece information includes the tooth width B, which is given according to the drawing.

[0011] The tooling information includes the distance H from the lower end face of the workpiece teeth to the worktable surface, where H is given according to the tooling drawing.

[0012] The machining information includes the upper cutting distance h1, the lower cutting distance h2, and the maximum distance K from the machine tool spindle to the worktable; h1, h2, and K are given according to the gear shaper instruction manual.

[0013] The tooling information includes the tool thickness H1 and the tool holder thickness H2; H1 is given according to the tool drawing, and H2 is given according to the tool holder drawing.

[0014] The formulas for calculating the target large stroke setpoint and the target small stroke setpoint to meet the processing conditions are as follows: L = B + h1 + h2; C = K - h1 - B - H1 - H2 - H; In the formula: L is the target large stroke setting value, and C is the target small stroke setting value.

[0015] It also includes a verification step, which verifies whether L and C meet the range set by the CNC system program of the gear hobbing machine based on the calculated L and C. If any value is found to be inappropriate within the range, the operator will be prompted to change the parameters.

[0016] The verification steps include: when the target small stroke set value C alarms, since K, h1, and B cannot be changed, it indicates that the parameters H and H1 or H2 are incorrect, and one or all of them need to be changed. The verification is repeated until it passes. When the target large stroke setting value L alarms, since B is fixed, if B is greater than the gear shaper's processing range, the machine tool cannot process this part. If B is within the gear shaper's processing range, and the values ​​of h1 and h2 corresponding to B are obtained from the recommended values ​​in the manual, and the sum of these three values ​​to obtain L exceeds the gear shaper's processing range, then the gear shaper also cannot process this part.

[0017] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: 1. This invention automatically adjusts the large and small strokes of the gear shaper through servo motor control. The large and small stroke values ​​of the gear shaper are recorded in the CNC system. When the worker inputs the necessary processing information through the program interface before processing, the CNC system automatically calculates the large and small stroke values ​​suitable for the current processing, controls the movement of the mechanical parts to reach the set position, and starts processing. This realizes automatic adjustment of the processing large and small strokes to adapt to the current processing conditions and improves production efficiency.

[0018] 2. This invention can also verify whether the current processing environment meets the input parameter conditions, and assist in the design of the gear hobbing tool height. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the CNC program interface for adjusting large and small strokes in a gear machining CNC program.

[0021] Figure 2 This is a schematic diagram of the workpiece information, tooling information, machining information, and tooling information in this invention. Detailed Implementation

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Example 1: See Figure 1 An adaptive machining method for a gear shaper includes the following steps: Step 1: Add display items for the current large stroke and current small stroke, as well as input items for the target large stroke and target small stroke to the CNC machining program of the gear shaper; Step 2: During the changeover process, determine the input method based on the status of the target large stroke setting value and the target small stroke setting value, and input the target large stroke setting value and the target small stroke setting value into the gear shaping machine CNC machining program; Step 3: After the gear shaper CNC system executes the command, it automatically adjusts the gear shaper's large and small strokes to the current target large and small stroke settings before proceeding with the machining.

[0025] After the worker inputs the necessary information for processing through the program interface before processing, the CNC system can automatically calculate the large and small stroke values ​​suitable for the current processing and control the movement of mechanical parts to reach the set position to start processing.

[0026] When the target large stroke and target small stroke settings are known, you only need to input the settings in the target large stroke and target small stroke input fields. After the CNC system executes, it will automatically adjust the large and small strokes of the gear shaper to the current values.

[0027] See Figure 2 When the required target large stroke and target small stroke settings are unknown, and the tooling height is unknown, known data including workpiece information, tooling information, processing information, and tooling information are input, and the target large stroke and target small stroke settings that meet the processing conditions are calculated.

[0028] The workpiece information includes the tooth width B, which is given according to the drawing.

[0029] The tooling information includes the distance H from the lower end face of the workpiece teeth to the worktable surface, where H is given according to the tooling drawing.

[0030] The machining information includes the upper cutting distance h1, the lower cutting distance h2, and the maximum distance K from the machine tool spindle to the worktable; h1, h2, and K are given according to the gear shaper instruction manual.

[0031] The tooling information includes the tool thickness H1 and the tool holder thickness H2; H1 is given according to the tool drawing, and H2 is given according to the tool holder drawing.

[0032] The tool thickness H1 is the height from the cutting edge to the tool mounting surface, and the tool shank thickness H2 is the height from the tool mounting surface to the end face of the tool shaft.

[0033] The formulas for calculating the target large stroke setpoint and the target small stroke setpoint to meet the processing conditions are as follows: L = B + h1 + h2; C = K - h1 - B - H1 - H2 - H; In the formula: L is the target large stroke setting value, and C is the target small stroke setting value.

[0034] Example 2: Based on Embodiment 1, this invention also includes a verification step. This verification step checks whether the calculated L and C values ​​meet the range set in the CNC system program of the gear hobbing machine. If either value is found to be outside the appropriate range, the operator is prompted to change the parameters. For example, if the range of L for a certain gear hobbing machine is [0, 100] and the range of C is [0, 30] (in millimeters), an alarm is triggered when the target large stroke setting value L exceeds 100, and an alarm is triggered when the target small stroke setting value C exceeds 30.

[0035] Specifically, when the target small stroke setting value C alarms, since K, h1, and B cannot be changed, it indicates that the parameters H and H1 or H2 are incorrect. One or all of them need to be changed, and the verification is repeated until it passes. When the target large stroke setting value L triggers an alarm, since B is fixed, if B exceeds the machining range of the gear shaper, the machine tool cannot process this part. If B is within the machining range of the gear shaper, the machine tool cannot process this part either, based on whether h1 and h2 given in the gear shaper manual can be taken as corresponding values. If not, it also means that the gear shaper cannot process this part. That is, if B is within the machining range of the gear shaper, and the values ​​of h1 and h2 corresponding to B are obtained from the recommended values ​​in the manual, and the sum of these three values ​​to obtain L exceeds the machining range of the gear shaper, then the gear shaper cannot process this part either.

[0036] This method can not only verify the tooling height H, but also the tool thickness H1 and the tool holder height H2. Users only need to make any changes according to the actual situation to meet the requirements.

[0037] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the invention. Modifications and variations made by those skilled in the art in accordance with the spirit of the invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An adaptive machining method for a gear shaper, characterized in that: Includes the following steps: Step 1: Add display items for the current large stroke and current small stroke, as well as input items for the target large stroke and target small stroke to the CNC machining program of the gear shaper; Step 2: During the changeover process, determine the input method based on the status of the target large stroke setting value and the target small stroke setting value, and input the target large stroke setting value and the target small stroke setting value into the gear shaping machine CNC machining program; Step 3: After the gear shaper CNC system executes the command, it automatically adjusts the gear shaper's large and small strokes to the current target large and small stroke settings before proceeding with the machining.

2. The adaptive machining method for a gear shaper according to claim 1, characterized in that: When the required target large stroke and target small stroke settings are known, enter the corresponding settings in the target large stroke and target small stroke input fields respectively.

3. The adaptive machining method for a gear shaper according to claim 1 or 2, characterized in that: When the target maximum and minimum stroke settings are unknown, and the tooling height is unknown, known data including workpiece information, tooling information, machining information, and tooling information are input, the target maximum and minimum stroke settings that meet the machining conditions are calculated.

4. The adaptive machining method for a gear shaper according to claim 3, characterized in that: The workpiece information includes the tooth width B, which is given according to the drawing.

5. The adaptive machining method for a gear shaper according to claim 4, characterized in that: The tooling information includes the distance H from the lower end face of the workpiece teeth to the worktable surface, where H is given according to the tooling drawing.

6. The adaptive machining method for a gear shaper according to claim 5, characterized in that: The machining information includes the upper cutting distance h1, the lower cutting distance h2, and the maximum distance K from the machine tool spindle to the worktable; h1, h2, and K are given according to the gear shaper instruction manual.

7. The adaptive machining method for a gear shaper according to claim 6, characterized in that: The tooling information includes the tool thickness H1 and the tool holder thickness H2; H1 is given according to the tool drawing, and H2 is given according to the tool holder drawing.

8. The adaptive machining method for a gear shaper according to claim 7, characterized in that: The formulas for calculating the target large stroke setpoint and the target small stroke setpoint to meet the processing conditions are as follows: L = B + h1 + h2; C = K - h1 - B - H1 - H2 - H; In the formula: L is the target large stroke setting value, and C is the target small stroke setting value.

9. A gear shaper adaptive machining method according to any one of claims 1 to 8, characterized in that: It also includes a verification step, which verifies whether L and C meet the range set by the CNC system program of the gear hobbing machine based on the calculated L and C. If any value is found to be inappropriate within the range, the operator will be prompted to change the parameters.

10. The adaptive machining method for a gear shaper according to claim 9, characterized in that: The verification steps include: when the target small stroke set value C alarms, since K, h1, and B cannot be changed, it indicates that the parameters H and H1 or H2 are incorrect, and one or all of them need to be changed. The verification is repeated until it passes. When the target large stroke setting value L alarms, since B is fixed, if B is greater than the gear shaper's processing range, the machine tool cannot process this part. If B is within the gear shaper's processing range, and the values ​​of h1 and h2 corresponding to B are obtained from the recommended values ​​in the manual, and the sum of these three values ​​to obtain L exceeds the gear shaper's processing range, then the gear shaper also cannot process this part.

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