阅读说明：本技术 导光板抛铣刀具 (Light guide plate polishing and milling cutter ) 是由 游尚儒 于 2021-06-23 设计创作，主要内容包括：本发明提供一种导光板抛铣刀具,用于针对由多片导光板堆栈的导光板组进行抛铣加工,其中导光板组的总高度为D。导光板抛铣刀具的特征在于,导光板抛铣刀具为圆形盘刀,且导光板抛铣刀具的半径为R,并符合R＝(D/2)/sinθ的关系式,其中,θ为该导光板抛铣刀具在加工时相对导光板组水平面的入刀角度,且θ为10±5度,该导光板组的总高度为D为140～180mm。藉此,可在控管导光板组中各导光板的尺寸公差的同时,提升板体侧边的光学粗糙度的制程指针。(The invention provides a light guide plate polishing and milling cutter which is used for polishing and milling a light guide plate group stacked by a plurality of light guide plates, wherein the total height of the light guide plate group is D. The light guide plate polishing and milling tool is characterized in that the light guide plate polishing and milling tool is a circular disc cutter, the radius of the light guide plate polishing and milling tool is R, and the light guide plate polishing and milling tool conforms to a relational expression of R ═ D/2)/sin theta, wherein theta is a tool entrance angle of the light guide plate polishing and milling tool relative to the horizontal plane of the light guide plate group during machining, theta is 10 +/-5 degrees, and the total height of the light guide plate group is D140-180 mm. Therefore, the manufacturing procedure pointer of the optical roughness of the side edge of the plate body can be improved while controlling the size tolerance of each light guide plate in the light guide plate group.)

1. The utility model provides a milling cutter is thrown to light guide plate for throw mill processing to the light guide plate group by the stack of multi-disc light guide plate, wherein the total height of light guide plate group is D, its characterized in that:

the light guide plate polishing and milling tool is a circular disc cutter, the radius of the light guide plate polishing and milling tool is R, and the light guide plate polishing and milling tool conforms to a relational expression of R ═ D/2)/sin theta, wherein theta is a cutter entering angle of the light guide plate polishing and milling tool relative to the horizontal plane of the light guide plate group during machining, theta is 10 +/-5 degrees, and the total height of the light guide plate group is 140-180 mm.

2. The light guide plate milling tool according to claim 1,

and the cutter entering angle theta of the light guide plate polishing and milling cutter relative to the horizontal plane of the light guide plate group is 10 degrees during machining.

3. The light guide plate milling tool according to claim 2,

wherein the total height D of the light guide plate group is 160 mm.

4. The light guide plate milling tool according to claim 1,

wherein the total height D of the light guide plate group is 160 mm.

Technical Field

The invention relates to light guide plate processing equipment, in particular to a light guide plate polishing and milling cutter.

Background

In the light guide plate manufacturing process, after the light guide plate is formed into a desired structural configuration through various production steps, before final packaging and shipment, polishing and milling processes are generally required to make the overall dimension of the light guide plate be within a specification, so as to facilitate subsequent panel factory assembly.

The polishing and milling process is roughly divided into three processes, namely a barrel cutter, a disc cutter and a forming cutter, wherein the barrel cutter is used for performing side milling and rough milling on a large workpiece, the disc cutter is mainly used for polishing and milling the plane of the workpiece to obtain the required surface roughness, and the forming cutter is used for polishing and milling the workpiece to form the required shape, such as a guide angle or a positioning angle.

However, in consideration of the processing efficiency and speed, the polishing and milling of the light guide plates are generally performed in a whole set, rather than individually for each light guide plate. Therefore, in the polishing and milling processing mode, the size difference of the whole group of light guide plates is generated after processing, and the chip removal during processing is also a problem to be overcome so as to avoid influencing the packaging and delivery quality of the subsequent light guide plates.

In view of the above, the inventor summarizes the abundant experience of years in the related industries, conceives and provides a light guide plate polishing and milling cutter, so as to provide an equipment tool suitable for polishing and milling of a light guide plate group, and simultaneously eliminate various adverse conditions which can affect the quality of the light guide plate.

Disclosure of Invention

The invention aims to overcome the defects of size difference and chip removal during machining of products in the prior art, and provides a light guide plate polishing and milling cutter which can control the size tolerance of the whole set of light guide plates during polishing and milling machining, control the roughness of side edges, control the performance of lateral optics, increase the index value of the whole process and reduce the whole waste rate.

The invention solves the technical problems through the following technical scheme:

the utility model provides a milling cutter utensil is thrown to light guide plate for throw to the light guide plate group by the stack of multi-disc light guide plate and mill processing, wherein the total height of light guide plate group is D, its characterized in that: the light guide plate polishing and milling tool is a circular disc cutter, the radius of the light guide plate polishing and milling tool is R, and the light guide plate polishing and milling tool conforms to a relational expression of R ═ D/2)/sin theta, wherein theta is a cutter entering angle of the light guide plate polishing and milling tool relative to the horizontal plane of the light guide plate group during machining, theta is 10 +/-5 degrees, and the total height of the light guide plate group is 140-180 mm. Accordingly, the diameter of the polishing and milling tool is set by controlling the tool feeding angle and the total height of the light guide plate group, so that the fall generated after polishing and milling of the light guide plate can be effectively solved, the manufacturing process accuracy of the light guide plate is improved, and the product yield of the light guide plate is improved.

Preferably, based on the above embodiment, in another embodiment, the light guide plate polishing and milling tool has a tool entering angle θ of 10 degrees relative to the horizontal plane of the light guide plate group during machining, so that the requirements of chip removal and size consistency can be met.

Further, preferably, the total height D of the light guide plate group is 160mm, so as to obtain better product processing results.

The positive progress effects of the invention are as follows: by controlling the size of the cutter, the difference of the polishing and milling circular arcs generated by the light guide plate in response to polishing and milling processing is kept within an allowable range, the size difference of each light guide plate in the whole batch of products is reduced, and the precision and accuracy capability of the whole process is improved; the cutter that accords with aforementioned condition simultaneously still can compromise the chip removal demand, eliminates the remaining harmful effects of processing piece to reduce the waste material rate by a wide margin, let the light guide plate product tolerance after the processing can reduce. Further, the invention also provides more detailed condition limitation aiming at the design of the cutter so as to disclose more excellent cutter structural characteristics.

Drawings

Fig. 1 is a schematic view (a) illustrating a machining application of a light guide plate polishing and milling tool according to an embodiment of the present invention.

Fig. 2 is a schematic view (two) illustrating a machining application of the light guide plate polishing and milling tool according to an embodiment of the present invention.

Detailed Description

The invention will be more clearly and completely described by way of example in the following with reference to the accompanying drawings.

In the surface polishing and milling process of the light guide plate, the disc cutter is mostly used to process the surface of the light guide plate in a rotating manner, and in the process, the surface is processed in a planar manner, but actually, considering the requirement of chip removal, the cutter can tilt at an included angle relative to the processed surface to operate. However, due to the inclined angle machining, the light guide plate group may have a size difference of the whole group after the rotary polishing and milling machining, and the polishing and milling marks formed by the tool relative to each light guide plate in the light guide plate group may cause the size difference. On the other hand, the chip removal is affected by the size ratio of the tool to the workpiece, in addition to the tool insertion angle. In the existing light guide plate polishing and milling process, the same disc cutter machine is used for both large-size and small-size light guide plates, and when the large-size light guide plate is processed, the problem that the dust formed by polishing and milling is difficult to remove due to the fact that the disc cutter is too small is derived. In view of the above, the inventors have found that it is necessary to find an ideal dimension ratio between a workpiece (i.e., a disc cutter) and a workpiece (i.e., a light guide plate group) to solve the above-mentioned drawbacks. In view of the above, the inventor describes a light guide plate polishing and milling tool disclosed in the present invention, by controlling the size of the tool, the difference of polishing and milling arc traces caused by the processing of the inclination angle is within an allowable range, and the smoothness of chip removal is considered, so as to effectively improve the product yield and consistency of the light guide plate and improve various existing defects in the light guide plate polishing and milling process.

Please refer to fig. 1-2, which are schematic diagrams (a) and (b) illustrating a machining application of a light guide plate polishing and milling tool according to an embodiment of the present invention, wherein for convenience, it is stated that the light guide plate polishing and milling tool in the drawings is a simple schematic diagram, and other mechanisms such as a carrying base or a motor are omitted, and the drawings are not in actual size scale. The light guide plate polishing and milling tool 1 is used for polishing and milling a light guide plate group 2 formed by stacking a plurality of light guide plates 20, wherein the total height of the light guide plate group 2 is D. The light guide plate polishing and milling tool 1 is characterized in that the light guide plate polishing and milling tool is a circular disc cutter, the radius of the light guide plate polishing and milling tool 1 is R, and R is (D/2)/sin theta. Wherein θ is a tool-entering angle of the light guide plate polishing and milling tool 1 relative to a horizontal plane of the light guide plate group 2 during machining, θ is 10 ± 5 degrees, and a total height D of the light guide plate group 2 is 140 to 180mm, wherein fig. 2 omits drawing of each light guide plate 20 for convenience of illustration, and actually the light guide plate group 2 shown in the figure is formed by stacking a plurality of light guide plates 20 as in fig. 1. Thus, the light guide plate polishing and milling tool 1 meeting the above conditions can greatly reduce the size difference of the whole light guide plate 20 when processing the light guide plate group 2, and the size tolerance of the whole batch of products can be greatly reduced, unnecessary material waste can be eliminated, the whole waste rate after cutting can be reduced, and relatively, the precision and accuracy of the whole polishing and milling process can be improved.

Incidentally, when the circular disc cutter is used for machining, if the cutter entering angle theta relative to the horizontal plane of the light guide plate group 20 is too small, poor chip removal is caused, and if the cutter entering angle theta is too large, the whole size difference is increased, so that the invention provides a mode of adjusting the size of the circular disc cutter based on the proper cutter entering angle theta and according to the total height condition of the light guide plate group 2 to be machined, so that the light guide plate polishing and milling cutter 1 conforming to the relational expression can obtain better polishing and milling machining results in application, and further achieve the excellent effects.

The light guide plate polishing and milling cutter 1 is a circular disc cutter which is manufactured according to the condition formula according to the machining condition that the cutter entering angle theta is 10 +/-5 degrees and the total height D of the light guide plate group is 140-180 mm, so that the polishing and milling arc difference generated on the machined surface of the light guide plate group 2 is greatly reduced, and the quality and the optical quality of the manufactured light guide plate product are improved. In practical application, two sets of light guide plate polishing and milling tools 1 may be disposed at the same time to process the planes formed by the stacked light guide plate groups 2, as shown in fig. 1. Further, for example, when the light guide plate polishing and milling tool 1 is limited to have a tool insertion angle θ of 10 degrees with respect to the horizontal plane of the light guide plate group 2 during machining and the light guide plate group 2 with a total height D of 140 to 180mm is machined, the radius R of the light guide plate polishing and milling tool 1 is about 40 to 52 centimeters according to the above relational expression, so that the light guide plate group with a total height D of 140 to 180mm is machined under the condition that the tool insertion angle θ is 10 degrees, thereby achieving the above-mentioned effects. Or, when the machining condition is defined as machining the light guide plate group 2 with the total height D of 160mm and the cutting-in angle θ is 10 ± 5 degrees, the radius R of the applicable light guide plate polishing and milling tool 1 is about 31-92 cm, so that the above-mentioned effects can be obtained by machining the light guide plate group 2 with the total height D of 160mm under the cutting-in angle condition.

Further, taking an example of practical application, when the total height D of the light guide plate group 2 is 160mm and the cutter-entering angle θ is 10 degrees, the radius R of the light guide plate polishing and milling tool 1 suitable for this case can be about 46cm according to the above relation. In other words, when the radius R of the light guide plate polishing and milling tool 1 is 46cm and polishing and milling are performed according to the condition that the set tool entrance angle θ is 10 degrees, the polishing and milling mark difference originally caused by the disc tool ruler during processing can fall within the allowable range, so as to greatly reduce the size difference between the light guide plates 20 in the entire light guide plate group 2, and relatively improve the quality and yield of the light guide plate product. In the aspect of chip removal, in addition to adjusting the tool-entering angle θ to a proper parameter, the light guide plate polishing and milling tool 1 manufactured by the above relation is in a relatively ideal proportion with respect to the size of the light guide plate group 2 to be processed, so that the problem of poor chip removal caused by the fact that the disc cutter is too small with respect to the size of the light guide plate group 2 in the past can be solved.

In summary, the light guide plate polishing and milling tool of the present invention finds out the concept of the ideal dimension ratio between the processed object and the processed object, and controls the size of the tool to keep the polishing and milling arc difference of the light guide plate generated by polishing and milling processing within the allowable range, thereby reducing the size difference of each light guide plate in the whole batch of products and improving the precision and accuracy of the whole process; meanwhile, the cutter meeting the conditions can also meet the chip removal requirement, eliminate the adverse effect of chip residue in machining, greatly reduce the waste rate and reduce the tolerance of the machined light guide plate product. Further, the present invention also proposes more detailed limitations for the processing conditions affecting the design of the cutting tool, so as to disclose more excellent structural features of the cutting tool and make the optical performance of both sides of the plate (called waist in the industry) consistent.

[ notation ] to show

1 light guide plate polishing and milling cutter

2 light guide plate group

20 light guide plate

Cutting angle of theta light guide plate polishing and milling cutter relative to horizontal plane of light guide plate set

Total height of D light guide plate group

And R, polishing and milling cutter radius of the light guide plate.