Grinding tool for inner hole of grinding wheel base body

Abstract

The utility model discloses a grinding tool for an inner hole of a grinding wheel base body, a flange hole assembled with rotating equipment is formed in the base body outside the inner hole of the base body, the grinding tool is provided with a clamping face larger than the side end face of the base body and a middle hole larger than the inner hole, and the grinding tool is further provided with a positioning mechanism concentrically connected with the base body. The positioning mechanism is a conical opening which is formed in the grinding tool and embedded into a flange hole, and the inner diameter of the flange hole is between the outer diameters of two end openings of the conical opening. The grinding tool is provided with the clamping face larger than the side end face of the base body, the small clamping end face of the base body can be replaced with the clamping face, then the fastening and clamping effect of the base body can be achieved, inner hole grinding is smoothly achieved, the machining difficulty is lowered, and the machining precision and efficiency are improved. Through the positioning mechanism arranged on the grinding tool, concentric assembly of the base body and the grinding tool can be achieved, and then the inner hole grinding quality and the stability in the grinding process are improved.

Description

Technical Field

[0001] The present application relates to the technical field of inner hole grinding of a grinding wheel base, and in particular to a grinding tool for inner holes of a grinding wheel base. Background Art

[0002] The grinding wheel matrix is ​​a substrate used to support and fix abrasives, and is an important component of the grinding wheel. Different grinding wheel matrix materials and shapes can be selected according to different application scenarios and grinding requirements. Commonly used grinding wheel abrasives include diamonds, such as diamond grinding wheels. In order to improve the performance and service life of the grinding wheel, it is also necessary to pay attention to the machining accuracy and surface finish of the matrix.

[0003] At present, when processing diamond grinding wheels, the base body must be processed and formed first, and then the diamond abrasive is bonded to the base body to form the diamond grinding wheel. When processing the base body, in order to improve the processing accuracy of the base body and facilitate the smooth assembly with the rotating equipment in the later stage, its inner hole needs to be ground by a grinding wheel to improve the inner hole assembly accuracy (such as roundness and concentricity). The structure of the diamond grinding wheel is as shown in the attached manual. Figure 2 As shown in the figure, it has a single cone surface structure and a double cone surface structure, and the diamond abrasive is coated and bonded on the cone surface. During grinding, the substrate usually needs to be clamped on the machine tool chuck for rotational grinding. Both the single cone surface structure and the double cone surface structure have a narrow end surface structure. After being clamped on the chuck, due to the small clamping surface, it is very easy to cause the following under the action of grinding external force Figure 5 The axial deflection shown in the figure causes the base body and the chuck to fall off, making the grinding of the inner hole of the grinding wheel base more difficult and the grinding accuracy insufficient. Summary of the invention

[0004] In response to the above-mentioned problems, the present application aims to provide a grinding tool for the inner hole of a grinding wheel base, which can improve the clamping tightness of the base, thereby smoothly realizing the inner hole grinding, reducing the processing difficulty, improving the processing accuracy and efficiency, and at the same time improving the inner hole grinding quality and stability during the grinding process.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: a grinding tool for the inner hole of a grinding wheel base, a flange hole assembled with a rotating device is arranged on the base outside the inner hole, and it is characterized in that: the grinding tool has a clamping surface larger than the side end surface of the base, and a middle hole larger than the inner hole, and a positioning mechanism is also arranged on the grinding tool to achieve concentric connection with the base.

[0006] Preferably, the positioning mechanism is a tapered port provided on the grinding tool and embedded in the flange hole, and the inner diameter of the flange hole is between the outer diameters of two ends of the tapered port.

[0007] Preferably, the grinding tool is a cylinder with a cylindrical structure, the cylinder is provided with a threaded hole connected to the flange hole, and the tapered mouth is arranged on the outside of the threaded hole.

[0008] Preferably, the grinding tool comprises a first cylinder and a second cylinder which are sequentially attached to two side surfaces of the base, and the tapered port is arranged in the first cylinder.

[0009] The beneficial effect of the present application is that the grinding tool has a clamping surface that is larger than the side end face of the substrate, through which the smaller clamping end face of the substrate can be replaced, thereby realizing the fastening and clamping effect of the substrate, thereby smoothly realizing the inner hole grinding, reducing the processing difficulty, and improving the processing accuracy and efficiency.

[0010] The positioning mechanism provided on the grinding fixture can realize the concentric assembly of the base body and the grinding fixture, thereby improving the inner hole grinding quality and the stability during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram of the single-cone and double-cone base structure.

[0012] Figure 2 for Figure 1 Illustration of diamond abrasive adhered to substrate.

[0013] Figure 3 This is a top view of the substrate structure.

[0014] Figure 4 The substrate is shown clamped on a chuck.

[0015] Figure 5 for Figure 4 Illustration of the deflection of the middle matrix due to grinding force.

[0016] Figure 6 This is a cylinder structure diagram of Example 1.

[0017] Figure 7 The diagram shows the cylinder body and the base body being connected and assembled on the chuck.

[0018] Figure 8 This is a diagram showing the axial deflection that occurs when the cylinder and base are assembled.

[0019] Fig. 9 This is a diagram showing a structure in which a conical mouth is provided on a cylinder in accordance with an embodiment of the present application.

[0020] Fig.10 It is a diagram illustrating the matching process between the base and the tapered mouth of the present application.

[0021] Fig.11 For this application Fig.10 Enlarged view of the structure at point A in the middle.

[0022] Fig.12 The first cylinder and the second cylinder structure are shown in the embodiment of the present application.

[0023] In the figure: 3-grinding wheel base; 3a-inner hole; 3b-flange hole; 4-machine tool chuck. DETAILED DESCRIPTION

[0024] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Refer to the attached Figures 1 to 12 The grinding tool for the inner hole of a grinding wheel base shown in the figure has a flange hole for assembly with a rotating device (such as a cutting machine) on the base outside the inner hole. After the diamond abrasive is bonded and set on the grinding wheel base, a diamond grinding wheel can be formed, and it can be assembled on the flange plate on the rotating shaft of the rotating device through the flange hole, and the diamond grinding wheel can be used for grinding.

[0026] In order to solve the problem that the current grinding wheel base is difficult to effectively clamp and grind the inner hole, the present application designs a grinding tool, which has a clamping surface a (preferably in the width direction) that is larger than the side end face of the base. The clamping surface a can replace the smaller clamping end face of the base, and then the clamping surface a of the grinding tool is used to achieve tight clamping. After the base is connected to the grinding tool, the tight clamping effect of the base can be achieved, thereby smoothly realizing the inner hole grinding, reducing the processing difficulty, and improving the processing accuracy and efficiency.

[0027] In order to avoid contact interference between the grinding wheel and the grinding tooling when inner hole grinding, the grinding tooling has a middle hole b that is larger than the inner hole. After the grinding wheel axially penetrates the inner hole of the substrate, the contact interference problem between the grinding wheel and the substrate can be effectively avoided.

[0028] During the rotation process, the chuck drives the grinding tool and the base to rotate synchronously at high speed. During the assembly, the eccentric error between the base and the grinding tool will affect the grinding accuracy of the inner hole. Therefore, in order to solve this problem, a positioning mechanism that is concentrically connected to the base is also provided on the grinding tool. The positioning mechanism can realize the concentric assembly of the base and the grinding tool, thereby improving the grinding quality of the inner hole and the stability during the grinding process.

[0029] Embodiment 1

[0030] In this embodiment, a grinding wheel base body is a single cone structure, specifically, Figure 6-7 As shown, the grinding tool is a cylinder 1 with a cylindrical structure, on which a threaded hole 1a connected to the flange hole is arranged. By passing bolts through the flange hole 3a of the base and the threaded hole 1a of the cylinder 1, the side wall of the base and the cylinder 1 can be in flat contact and tightly connected. Then, the cylinder 1 is clamped on the chuck to perform the grinding operation on the inner hole of the base.

[0031] In order to realize the concentric assembly of the base and the cylinder 1, as Fig. 9 As shown, the positioning mechanism is a tapered opening c provided on the grinding tool and embedded in the flange hole. Specifically, the tapered opening c is provided on the outer side of the threaded hole 1a ( Fig. 9 As shown), the inner diameter of the flange hole is between the outer diameters of the two ports of the tapered port c. Figure 10-11 As shown, after the base is brought close to the cylinder 1, the flange hole of the base is sleeved on the tapered mouth c, and the conical side wall of the tapered mouth c contacts the outer port of each flange hole, so that the coaxial positioning of the flange hole, the tapered mouth c and the threaded hole 1a can be achieved, and then the coaxial positioning of the base and the cylinder 1 can be achieved, and then the bolts are inserted into the flange holes and the threaded holes to connect and tighten the base and the cylinder 1, and the cylinder can be clamped on the chuck for grinding operation.

[0032] Embodiment 2

[0033] The second grinding wheel substrate of the embodiment is a double-conical structure, specifically, Fig.12 As shown, the grinding tool comprises a first barrel 21 and a second barrel 22 which sequentially fit the two sides of the base, that is, grooves (not shown) fitting the two sides of the base are provided in the first barrel 21 and the second barrel 22, and the tapered opening c is provided in the first barrel 21. During assembly, one side of the base is fitted into the first barrel 21, and at the same time, the flange hole of the base contacts the tapered opening c provided in the first barrel 21 as in the first embodiment to achieve coaxial positioning, and then the second barrel 22 is fitted on the other side wall of the base, and the first barrel 21 and the second barrel 22 are connected by a screw, and the base is clamped, and then the first barrel 21, the second barrel 22 and the base as a whole can be clamped on the chuck to perform the inner hole grinding operation of the double-conical base.

[0034] The principle of the present application is: when grinding a single-conical substrate, after the substrate is moved close to the cylinder 1, the flange hole of the substrate is sleeved on the tapered mouth c, and the conical side wall of the tapered mouth c contacts the outer port of each flange hole, so that the coaxial positioning of the flange hole, the tapered mouth c and the threaded hole 1a can be achieved, and then bolts are inserted into the flange hole and the threaded hole to connect and tighten the substrate and the cylinder 1, and the cylinder can be clamped on the chuck for grinding operation.

[0035] When grinding a double-conical substrate, one side of the substrate is fitted and embedded in the first cylinder 21, and at the same time, the flange hole of the substrate and the tapered mouth c set in the first cylinder 21 are in contact with the single cone to achieve coaxial positioning, and then the second cylinder 22 is fitted on the other side wall of the substrate, and the first cylinder 21 and the second cylinder 22 are connected by a screw, and the substrate is clamped, and then the first cylinder 21, the second cylinder 22 and the substrate as a whole can be clamped on the chuck to perform the inner hole grinding operation of the double-conical substrate.

[0036] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A grinding tool for the inner hole of a grinding wheel base, wherein a flange hole for assembling with a rotating device is provided on the base outside the inner hole, characterized in that: The grinding tool has a clamping surface (a) larger than the side end surface of the substrate, and a middle hole (b) larger than the inner hole, and a positioning mechanism is also provided on the grinding tool to achieve concentric connection with the substrate; The positioning mechanism is a tapered port (c) provided on the grinding tool and embedded in the flange hole, and the inner diameter of the flange hole is between the outer diameters of the two ends of the tapered port (c); The grinding tool is a cylinder (1) with a cylindrical structure, the cylinder (1) is provided with a threaded hole (1a) connected to the flange hole, and the tapered opening (c) is arranged on the outside of the threaded hole (1a).

2. The grinding tool according to claim 1, characterized in that: The grinding tool comprises a first cylinder (21) and a second cylinder (22) which are sequentially attached to two side surfaces of the base, and the tapered opening (c) is arranged in the first cylinder (21).

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