Rapid dressing method based on unformed grinding wheel of grinding machine

Abstract

The invention discloses a quick dressing method based on an unformed grinding wheel of a grinding machine. The method comprises the following steps that (1) the shape of the grinding wheel and dressing process parameters are set; (2) the concave-convex shape of the grinding wheel and the positions of the highest point and the lowest point are recognized; (3) according to the fall between the highest point and the lowest point of the grinding wheel, the to-be-trimmed part of the grinding wheel is equally divided, and a tool retracting path is processed; (4) sand repairing paths are calculated, wherein the sand repairing paths comprise a plurality of sand repairing paths and a plurality of idle movement paths; and (5) finishing sand finishing according to the calculated finally-formed sand finishing path. According to the quick dressing method based on the unformed grinding wheel of the grinding machine, through the methods of automatically recognizing the contour of the grinding wheel, dividing the tool according to the single feed amount, automatically calculating the dressing path, automatically distinguishing the idle moving path from the actual dressing path and the like, the working area of dressing equipment is reduced, the idle moving path is reduced, the dressing time of the grinding wheel is greatly shortened, and the dressing efficiency is improved. The dressing speed and efficiency of the grinding wheel are improved, and grinding wheel loss is reduced.

Description

Technical Field

[0001] The invention relates to the field of grinding machines, and in particular to a rapid dressing method based on an unformed grinding wheel of a grinding machine. Background Art

[0002] In the field of grinding machine processing, since all grinding machines need to be repaired, grinding wheels are a common consumable item. Grinding wheels generally include simple flat grinding wheels and complex profiled grinding wheels. Among them, profiled grinding wheel processing has many advantages such as high efficiency, high precision, and high flexibility.

[0003] Among the various grinding wheel dressing, simple flat grinding wheels can be manually dressed, while forming grinding wheels require editing of complex programs to dress. At present, forming grinding wheels are generally dressed using the traditional progressive method according to the forming path. The specific method is: each time according to the final forming contour, a single progressive feed of a fixed size is used for sand dressing, and the installation path peels off the grinding wheel layer by layer until the final forming contour is formed.

[0004] In the above dressing process, many empty cuts often appear, and for some special-shaped grinding wheels, the feed speed of this dressing method is generally slow, which can only be consistent with the speed of the sand dressing path, and there is no automatic distinction between the empty cut and the actual sand dressing path. Combined with the lengthy empty cut path, the sand dressing time will be greatly prolonged, the sand dressing efficiency is low, and it cannot meet the use requirements. Summary of the invention

[0005] To solve the above problems, the present invention provides a rapid dressing method based on the unformed grinding wheel of a grinder, which automatically identifies the grinding wheel contour, divides the knife according to the single feed amount, automatically calculates the sand dressing path, optimizes the path to reduce idle movement, and automatically distinguishes between idle movement and actual sand dressing paths (including solid line sand dressing paths and dotted line idle movement paths), thereby narrowing the working area of ​​the sand dressing equipment, reducing the idle movement path, greatly shortening the dressing time of the grinding wheel, improving the dressing speed and efficiency of the grinding wheel, and minimizing the grinding wheel loss to the greatest extent.

[0006] According to one aspect of the present invention, a rapid dressing method based on an unformed grinding wheel of a grinding machine is provided, comprising the following steps:

[0007] 1) Set the grinding wheel shape and dressing process parameters;

[0008] 2) Identify the shape of the grinding wheel;

[0009] 3) According to the height difference between the highest point and the lowest point of the grinding wheel, the part of the grinding wheel to be dressed is evenly divided, and the tool retraction path is processed;

[0010] 4) Calculate the sand repair path, including multiple sand repair paths and multiple empty movement paths;

[0011] 5) The sand repairing is completed according to the calculated final sand repairing path.

[0012] In some embodiments, in step 1), the process parameters include sand dressing group, group activation, rough dressing parameter, feed direction, single feed amount, and idle dressing parameter. The benefit is that the types of set process parameters are described.

[0013] In some embodiments, the rough repair parameter includes the rough repair times and the rough repair rate, and the idle repair parameter includes the idle repair times and the idle repair rate. The benefit of this is that the types of related process parameters are further described.

[0014] In some embodiments, in step 3), the equalization is performed according to the single feed amount. The benefit is that a specific method for evenly dividing the portion to be dressed of the grinding wheel is further described.

[0015] In some embodiments, in step 4), each idle movement path located on each side of the protruding portion of the grinding wheel is connected between each sand repairing path. The benefit of this is that the relationship between each sand repairing path and each idle movement path is further described.

[0016] In some embodiments, in step 4), no idle grinding occurs at the protruding portion of the grinding wheel. The benefit of this is that the beneficial effect of calculating the sand dressing path is described.

[0017] In some embodiments, the method further comprises the following steps: 6) performing light finishing on the grinding wheel. The invention is beneficial in that the subsequent steps that can be performed are described.

[0018] In some embodiments, in step 6), the step lines generated on the surface of the grinding wheel during the layered sanding are solved by light repair. The benefit lies in that the purpose and beneficial effect of light repairing the grinding wheel are described. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A step diagram of a rapid dressing method based on an unformed grinding wheel of a grinding machine according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 An interface diagram for setting process parameters based on a rapid dressing method for an unformed grinding wheel of a grinding machine is shown;

[0021] Figure 3 for Figure 1 The schematic diagram of a method for quickly dressing an unformed grinding wheel of a grinding machine, in which a knife is divided at a concave part of the grinding wheel;

[0022] Figure 4 for Figure 1 A schematic diagram of calculating a dressing path based on a rapid dressing method for an unformed grinding wheel of a grinding machine is shown;

[0023] Figure 5 for Figure 1 A schematic diagram of the cam shape before and after finishing based on a rapid dressing method for an unformed grinding wheel of a grinder is shown. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the method includes several main steps, which are described below.

[0026] The first step is to set the grinding wheel shape and the process parameters related to dressing of the grinding wheel on the system setting interface.

[0027] like Figure 2 As shown, the names and meanings of the main process parameters to be modified are as follows:

[0028] Sand repair group: the number of the selected sand repair group among the multiple sand repair groups set in advance;

[0029] Group Enable: Whether the selected sand repair group is enabled;

[0030] Rough repair times: the number of rough repairs required in this sand repair process;

[0031] Rough repair rate: the rate at which rough repair is required during this sand repair process;

[0032] Feed direction: the direction of feed when sanding;

[0033] Single feed amount: the feed amount in the feed direction each time during sand repair;

[0034] Number of idle repairs: the number of idle repairs required during this sand repair process;

[0035] Empty repair rate: the rate at which empty repair is required during this sand repair process;

[0036] The second step is to identify the shape of the grinding wheel to facilitate subsequent path planning.

[0037] The main identification contents are:

[0038] The concave and convex shape of the grinding wheel, that is, the shape of its concave and convex parts;

[0039] The position of the highest point and the lowest point: that is, the position of the highest protruding point and the lowest concave point of the concave and convex shape of the grinding wheel.

[0040] In the third step, the part of the grinding wheel to be dressed is divided evenly and the retraction path is processed.

[0041] like Figure 3 As shown, the height difference between the highest point and the lowest point of the grinding wheel is determined, and the difference is evenly divided according to the single feed amount set. Point A is the highest point of the grinding wheel, point B is the lowest point of the grinding wheel, H is the distance to be dressed of the grinding wheel, and each dotted line is the cutting path.

[0042] The fourth step is to calculate the sand repair path, which includes multiple sand repair paths and multiple empty movement paths.

[0043] like Figure 4 As shown, the sand repair path and the idle movement path are distributed on both sides of the protruding part of the grinding wheel, wherein each solid line is the sand repair path of the grinding wheel, each dotted line is the idle movement path of the grinding wheel, and each idle movement path on each side is respectively connected to each sand repair path. Therefore, after each sand repair through a sand repair path, it can be moved to the end of the next sand repair path through the connected idle movement path, and at the same time, it can prevent idle grinding from occurring at the protruding part of the grinding wheel during the sand repair process.

[0044] The fifth step is to complete the sand repair according to the calculated final sand repair path.

[0045] The sixth step is to polish the grinding wheel.

[0046] like Figure 5 As shown in the figure, the purpose of light repair is to solve the step lines produced on the surface of the grinding wheel during layered sand repair, so as to ensure the accuracy of sand repair. Figure (a) shows the shape of the grinding wheel before light repair, and Figure (b) shows the shape of the grinding wheel after light repair.

[0047] The rapid dressing method based on the unformed grinding wheel of a grinding machine in the present invention mainly has the following beneficial effects:

[0048] 1. It can automatically identify the grinding wheel profile, automatically calculate the sanding path, and automatically distinguish between the empty shift and the actual sanding path, with a high degree of automation;

[0049] 2. Reduce the working area of ​​the sand repair equipment and save space;

[0050] 3. Reduce the idle movement path, greatly shorten the dressing time of the grinding wheel, and improve the dressing speed and efficiency of the grinding wheel;

[0051] 4. Minimize grinding wheel loss and save costs.

[0052] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A rapid dressing method based on an unformed grinding wheel of a grinding machine, characterized in that: The following steps are included 1) Set the grinding wheel shape and dressing process parameters; 2) Identify the concave and convex shape of the grinding wheel, as well as the positions of the highest and lowest points; 3) According to the height difference between the highest point and the lowest point of the grinding wheel, the part of the grinding wheel to be dressed is evenly divided, and the tool retraction path is processed; 4) Calculate the sand repair path, including multiple sand repair paths and multiple empty movement paths; 5) The sand repairing is completed according to the calculated final sand repairing path.

2. A rapid dressing method based on an unformed grinding wheel of a grinding machine according to claim 1, characterized in that: In step 1), the process parameters include sand dressing group, group activation, rough dressing parameters, feed direction, single feed amount, and idle dressing parameters.

3. A rapid dressing method based on an unformed grinding wheel of a grinding machine according to claim 2, characterized in that: The rough repair parameters include the number of rough repairs and the rough repair rate, and the idle repair parameters include the number of idle repairs and the idle repair rate.

4. The rapid dressing method based on the unformed grinding wheel of a grinding machine according to claim 2, characterized in that: In step 3), the equalization is performed according to the single feed amount.

5. The rapid dressing method based on the unformed grinding wheel of a grinding machine according to claim 1, characterized in that: In step 4), each idle movement path located on each side of the protruding portion of the grinding wheel is connected between each sand dressing path.

6. A rapid dressing method based on an unformed grinding wheel of a grinding machine according to claim 5, characterized in that: In step 4), no lost-motion grinding occurs at the protruding portions of the grinding wheel.

7. The rapid dressing method based on the unformed grinding wheel of a grinding machine according to claim 1, characterized in that: The following steps are also included 6) Polish the grinding wheel.

8. The rapid dressing method based on the unformed grinding wheel of a grinding machine according to claim 7, characterized in that: In step 6), the step texture produced on the surface of the grinding wheel during the layered sanding is solved by light repair.

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