A grinding wheel rod for glass processing and CNC processing method

Abstract

The present invention discloses a grinding wheel bar for glass processing and a CNC processing method, which comprises a rod handle, a rod head installed at one end of the rod handle, the rod head comprises a punching section, a finishing section and a roughing section arranged in sequence along the axial direction, the roughing section is connected to the rod handle, the diameter of the punching section is smaller than the finishing section, a plurality of annular grooves are arranged on the outer peripheral wall of the roughing section, all the annular grooves are arranged at intervals along the axial direction, and the width of the notch position of the annular groove is greater than the width of the groove bottom position, the groove bottom and the notch of the annular groove are connected by a conical surface, the angle θ between the generatrix of the conical surface and the axis where the roughing section of the rod head is located is 45° to 60°, and the glass is processed by using the above-mentioned grinding wheel bar. The present invention reduces the edge collapse rate of the glass cover plate, increases the processing speed, and improves the durability of the grinding wheel bar, thereby greatly saving costs.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, in particular to a grinding wheel rod for glass processing and a CNC processing method. Background Art

[0002] With the development of electronic technology, the appearance requirements of mobile phone panel glass are getting higher and higher, and the processing technology is relatively complicated. After the two large surfaces of the panel glass are roughly ground, it generally enters the CNC combined grinding wheel bar forming process. In order to ensure the yield rate, in the existing technology, the mobile phone panel glass processing using CNC grinding wheel bars requires chamfering, usually rough trimming first and then fine trimming, chamfering is performed during fine trimming, and a cylindrical grinding wheel bar is used for rough trimming. The fine trimming has a small cutting depth, a fine sand number, and a long processing time, which makes the glass cover plate edge collapse rate high and the durability of the grinding wheel bar is seriously reduced. Summary of the invention

[0003] The technical solution adopted by the present invention is: it includes a rod handle, a rod head installed at one end of the rod handle, the rod head includes a punching section, a fine trimming section and a rough trimming section arranged in sequence along the axial direction, the rough trimming section is connected to the rod handle, the diameter of the punching section is smaller than the fine trimming section, a plurality of annular grooves are provided on the outer peripheral wall of the rough trimming section, all of the annular grooves are arranged at intervals along the axial direction, and the width of the notch position of the annular groove is greater than the width of the groove bottom position, the groove bottom and the notch of the annular groove are connected by a conical surface, and the angle θ between the generatrix of the conical surface and the axis where the rough trimming section of the rod head is located is 45°~60°.

[0004] The diameter of the fine trimming section is the same as the diameter of the rough trimming section.

[0005] The fine trimming section and the rough trimming section are connected by a transition section.

[0006] The finishing section and the punching section are connected via a conical transition.

[0007] The glass is processed by using the grinding wheel rod, and the processing method includes the following steps:

[0008] Step S1: moving the rod handle so that the rod head on the rod handle moves to a position corresponding to the position to be processed of the product, and performing rough trimming and chamfering on the position to be processed of the product through the rough trimming section of the rod head;

[0009] Step S2: The finishing section on the rod head is aligned with the position of the product to be processed after rough trimming, and the product is fine-trimmed by the finishing section;

[0010] Step S3: Align the punching section of the rod head with the area to be drilled on the product, and punch holes on the product through the punching section.

[0011] The present invention redesigns the grinding wheel rod structure, designs the rough trimming section to have an annular groove on the outer peripheral wall, and when the grinding wheel rod is used, chamfering is performed during rough trimming, so that the edge breakage rate of the glass cover plate is reduced, the processing speed is faster, and the durability of the grinding wheel rod is improved, thereby greatly saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a structural schematic diagram of a grinding wheel rod for glass processing.

[0013] Figure 2 It is a schematic diagram of the structure of a grinding wheel rod in the prior art.

[0014] Figure 3 yes Figure 1 Enlarged view of the middle annular groove.

[0015] Among them, 1. rod head, 2. rod handle, 3. punching section, 4. finishing section, 5. rough trimming section, 6. annular groove, 7. transition section. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, the present invention provides a grinding wheel rod for glass processing, which includes a rod head 1 and a rod handle 2. The rod head 1 is installed at one end of the rod handle 2. The rod head 1 is provided with a punching section 3, a fine trimming section 4, and a rough trimming section 5 in sequence along the axial direction. The rough trimming section 5 is connected to the rod handle 2. The diameter of the punching section 3 is smaller than that of the fine trimming section 4. An annular groove 6 is provided on the outer peripheral wall of the rough trimming section 5. A number of annular grooves 6 are equidistantly distributed along the axial direction, such as Figure 3 As shown, the opening width of the annular groove 6 is greater than the bottom width, and its generatrix forms an angle θ with the axial direction, and the angle θ ranges from 45 to 60 degrees. When the rough trimming section 5 of the grinding wheel rod is against the side of the glass cover plate, the side and top surface of the glass cover plate form a right angle. During processing, the outer wall of the rough trimming section 5 directly contacts the side of the glass cover plate, and the right-angle vertex is usually located above the annular groove 6. The right-angle vertex is suspended and will not touch the outer wall of the rough trimming section 5. Therefore, when the rough trimming section 5 rotates, its outer wall roughly trims the side of the glass cover plate, and the right-angle vertex will not contact the outer wall of the rough trimming section 5, thereby greatly reducing the edge collapse phenomenon. Figure 2 The rough trimming section 5 of the grinding wheel rod in the prior art is shown to be smooth and cylindrical, which may easily cause the edge of the glass cover plate to break during rough trimming.

[0018] The diameters of the finishing section 4 and the roughing section 5 are both 6 mm, and the diameter of the rod handle 2 is also 6 mm. The purpose of this design is that when the fixture clamps the grinding wheel rod, the diameters of the rod handle 2 and the roughing section 5 are the same, so that the grinding wheel rod can be adjusted in length in the fixture according to actual production conditions to meet different processing requirements.

[0019] A transition section 7 is provided between the fine trimming section 4 and the rough trimming section 5 .

[0020] The bottom of the finishing section 4 is tapered and connected to the punching section 3, and the taper is 120 degrees.

[0021] The reasonable range of the cutting depth for roughing is 0.2mm / 0.08mm for fine finishing, but the chamfering size exceeds the range of fine finishing cutting depth, resulting in a high rate of edge failure of about 10%. In addition, the fine finishing sand number is relatively fine and not wear-resistant. The chamfering during fine finishing results in a short life of the grinding wheel rod, and each grinding wheel rod can only process 300 products on average.

[0022] Therefore, the glass cover plate is processed by using the above-mentioned grinding wheel rod, and the processing method includes the following steps:

[0023] Step S1: first, the grinding wheel rod is moved to the outer contour of the glass cover plate and the rough trimming section 5 is in contact with the outer contour of the glass cover plate, and the outer contour is roughly trimmed with the rough trimming section 5, and the rough trimming section 5 is used to chamfer, and the rough trimming outer contour cutting depth is 0.1-0.2 mm;

[0024] Step S2: After the rough trimming and chamfering are completed, the contour is finely trimmed by the fine trimming section 4, and the cutting depth of the fine trimming contour is 0.06-0.08 mm;

[0025] Step S3: Finally, punching is performed directly using the punching section 3.

[0026] During rough trimming, the chamfering size is within the range of rough trimming cutting depth, can be formed in one time, and is not prone to edge chipping. The defective rate can be reduced to less than 5%. The rough trimming sand number is relatively coarse and wear-resistant. Each grinding wheel rod has 3 grooves for rough trimming / fine trimming. Each groove can process at least 200 glass cover plates on average, and each grinding wheel rod can process at least 600 glass cover plates on average.

[0027] The above is an explanation of the preferred embodiments of the present invention, but it cannot be understood as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A CNC processing method based on a grinding wheel rod for glass processing, which is applied to a grinding wheel rod for glass processing, wherein the grinding wheel rod for glass processing comprises a rod handle, a rod head installed at one end of the rod handle, the rod head comprises a punching section, a fine trimming section and a rough trimming section arranged in sequence along the axial direction, the rough trimming section is connected to the rod handle, the diameter of the punching section is smaller than the fine trimming section, a plurality of annular grooves are arranged on the outer peripheral wall of the rough trimming section, all of the annular grooves are arranged at intervals along the axial direction, and the width of the notch position of the annular groove is greater than the width of the groove bottom position, the groove bottom and the notch of the annular groove are connected by a conical surface, and the angle θ between the generatrix of the conical surface and the axis where the rough trimming section of the rod head is located is 45° to 60°; Features: The steps include: Step S1: moving the rod handle so that the rod head on the rod handle moves to a position corresponding to the position to be processed of the product, and performing rough trimming and chamfering on the position to be processed of the product through the rough trimming section of the rod head; Step S2: The finishing section on the rod head is aligned with the position of the product to be processed after rough trimming, and the product is fine-trimmed by the finishing section; Step S3: Align the punching section of the rod head with the area to be drilled on the product, and punch holes on the product through the punching section.

2. A CNC processing method based on a grinding wheel rod for glass processing according to claim 1, characterized in that: The diameter of the fine trimming section is the same as the diameter of the rough trimming section.

3. A CNC processing method based on a grinding wheel rod for glass processing according to claim 2, characterized in that: The fine trimming section and the rough trimming section are connected via a transition section.

4. The CNC processing method based on the grinding wheel rod for glass processing according to claim 1, characterized in that: The finishing section and the punching section are connected via a conical transition.

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