Grinding sleeve assembly capable of achieving grinding sleeve replacement and grinding sleeve grinding compensation method

Abstract

The invention relates to a grinding sleeve assembly capable of achieving grinding sleeve replacement and a grinding sleeve grinding compensation method. The grinding sleeve assembly comprises a grinding sleeve, a positioning support, a locking nut and a compensation gasket. A flange is arranged at the part, close to one end, of the positioning support; a clamping head is arranged at the other end of the positioning support, a mounting hole is formed in the center of the clamping head, and the bottom surface of the mounting hole forms an axial positioning supporting surface; an external thread is arranged outside the clamping head; a forward taper inclined plane is arranged outside the upper end of the clamping head; a plurality of slots are uniformly distributed in the side wall of the clamping head along the circumferential direction; the internal thread hole of the locking nut is matched with the external thread on the clamping head; a reverse taper inclined plane is arranged at the position, close to one end, of an inner hole of the locking nut; the locking nut is matched with the external thread of the clamping head in a screwing mode, the clamping head generates trace elastic deformation inwards in the radial direction through the extrusion effect of the reverse taper inclined face and the forward taper inclined face, and clamping and fixing of the grinding sleeve are achieved. According to the invention, replacement of the grinding sleeve and compensation after axial abrasion of the grinding sleeve are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding equipment, and particularly discloses a structure design and compensation method of a replaceable grinding sleeve. BACKGROUND

[0002] In many industrial production and processing fields, grinding is a crucial process, which is widely used in mechanical manufacturing, optical instruments, electronic equipment and other industries for precision machining of various materials and parts to obtain the required dimensional accuracy, surface finish and shape accuracy.

[0003] In the grinding process, the grinding sleeve, as a key component that directly contacts the workpiece to be ground and performs grinding operation, its performance and state play a decisive role in grinding quality and efficiency. However, the existing grinding sleeve has some significant drawbacks, which seriously affect the effectiveness and cost of the operation.

[0004] On the one hand, most of the existing grinding sleeves are of a fixed structure, and once the grinding sleeve is worn, damaged or needs to be replaced with different specifications to adapt to different grinding requirements, the entire grinding device often needs to be disassembled, and even the entire component including the grinding sleeve may need to be replaced, which not only is complicated and time-consuming, but also causes long equipment downtime, seriously affecting production efficiency.

[0005] On the other hand, as the grinding operation continues, the grinding sleeve inevitably wears out, and the existing grinding sleeve lacks effective compensation mechanism. When the grinding sleeve is worn to a certain extent, the gap between the grinding sleeve and the workpiece to be ground changes, which cannot guarantee a stable and accurate grinding gap, resulting in a decline in grinding quality and difficulty in meeting the increasingly high production requirements.

[0006] In summary, the existing grinding sleeve has the problems of unreplaceable structure and lack of effective compensation method, which need to be solved urgently. Developing a structure design and compensation method that can replace the grinding sleeve quickly and easily, while having an effective compensation mechanism to ensure the grinding quality, has important practical significance for improving the efficiency and quality of grinding operation and reducing production costs. SUMMARY

[0007] The present application aims to solve the problems of the prior art, and provides a grinding sleeve assembly and a grinding sleeve wear compensation method.

[0008] One of the above-mentioned purposes of the present application is achieved by the following technical solution: A grinding sleeve assembly capable of replacing the grinding sleeve, comprising a grinding sleeve, a positioning support, a locking nut and a compensation gasket; The grinding sleeve is in a columnar shape, and the outer surface of the grinding sleeve is a positioning circumferential surface; The positioning support is a columnar support, a flange is arranged on the positioning support near one end, and a bolt through hole is arranged on the flange; the other end of the positioning support is a clamping head, a mounting hole is arranged in the center of the clamping head, the diameter of the mounting hole is consistent with the diameter of the positioning circumferential surface of the grinding sleeve, and the bottom surface of the mounting hole constitutes an axial positioning support surface; an external thread is arranged on the outside of the clamping head; a positive taper inclined surface is arranged on the upper end of the outside of the clamping head; a plurality of slits are uniformly arranged on the side wall of the clamping head in the circumferential direction, the slits are arranged in the axial direction of the clamping head, and the slits penetrate through the axial length of the clamping head; The internal thread hole of the locking nut is matched with the external thread on the clamping head; a reverse taper inclined surface is arranged on the internal hole of the locking nut near one end, and the taper of the reverse taper inclined surface is consistent with the taper of the positive taper inclined surface; The compensation gasket is used for compensating the axial direction of the grinding sleeve after the grinding sleeve is worn in the axial mode; In the initial installation state, the grinding sleeve is inserted into the mounting hole of the clamping head, and the inner end of the grinding sleeve is in contact with the axial positioning support surface of the positioning support; in the axial compensation state, the compensation gasket and the grinding sleeve are sequentially inserted into the mounting hole of the clamping head, the inner end of the compensation gasket is in contact with the axial positioning support surface of the mounting hole, and the outer end surface of the compensation gasket is in contact with the inner end surface of the grinding sleeve; the locking nut is screwed with the external thread of the clamping head, the reverse taper inclined surface and the positive taper inclined surface are extruded, the clamping head is elastically deformed in the radial direction by a small amount inward, and the clamping and fixing of the grinding sleeve are realized.

[0009] Moreover, the material of the positioning support is 40Cr alloy structural steel, and the material of the compensation gasket is stainless steel SUS304.

[0010] Moreover, the outer diameter of the compensation gasket is consistent with the hole diameter of the mounting hole on the clamping head.

[0011] Moreover, the small amount of elastic deformation of the clamping head in the radial direction inward is 0.01-0.05 mm.

[0012] Moreover, the tapers of the reverse taper inclined surface and the positive taper inclined surface are 1:10.

[0013] The second purpose of the present application is achieved by the following technical scheme. A grinding sleeve grinding compensation method based on the above-mentioned grinding sleeve replacement implementable grinding sleeve assembly, and the invention point is that the method comprises the following steps. Step 1, in the running process of the grinding equipment, the displacement sensor monitors the axial wear of the grinding sleeve in real time; when the sensor detects that the wear reaches the expected threshold, the system issues a warning, prompting that compensation is needed.

[0014] Step 2, the operator detaches the grinding sleeve from the grinding sleeve assembly, and selects a compensation gasket with a thickness corresponding to the wear amount.

[0015] Step 3, install the compensation gasket into the mounting hole of the positioning support, and make the compensation gasket contact with the axial positioning support surface; Step 4, re-install the grinding sleeve into the mounting hole of the positioning support, and make the grinding sleeve contact with the outer end surface of the compensation gasket, and then tighten and fix by using the locking nut.

[0016] Step 5, start the machine, perform trial grinding, and use high-precision measuring instruments to detect the size accuracy and surface roughness of the workpiece after trial grinding; if the requirements are met, the compensation operation is completed; if the requirements are not met, the thickness of the compensation gasket is adjusted again, and the above compensation steps are repeated until the satisfactory grinding effect is achieved.

[0017] The present application has the advantages and positive effects that: 1, the present application realizes the quick replacement of the grinding sleeve through the detachable connection design of the grinding sleeve assembly and the quick positioning and dismounting structure, greatly shortens the equipment downtime, and improves the production efficiency.

[0018] 2, the present application uses the sensor to monitor the wear condition of the grinding sleeve in real time, and uses the gasket compensation method to compensate the axial wear of the grinding sleeve, so that the grinding accuracy of the grinding sleeve can be restored in time, the stability of the grinding quality is ensured, the defective rate is reduced, and the production cost is reduced.

[0019] 3, the structure design of the present application is simple and reasonable, easy to manufacture and install, and the compensation materials such as gaskets used are low in cost, further reducing the use cost of the equipment. DETAILED DESCRIPTION

[0020] Figure 1 is a perspective exploded view of the grinding sleeve assembly of the present application; Figure 2 is an assembly view of the grinding sleeve assembly of the present application; Figure 3 is a perspective view of the grinding sleeve of the present application; Figure 4 is a perspective view of the positioning support of the present application Figure 1 ; Figure 5 is a perspective view of the positioning support of the present application Figure 2 ; Figure 6 is a perspective view of the locking nut of the present application; Figure 7 is a half-sectional view of the locking nut of the present application; Figure 8 is a flow chart of the grinding sleeve compensation method of the present application. DETAILED DESCRIPTION

[0021] The structure of the present application is further illustrated by the following examples in combination with the accompanying drawings.

[0022] A grinding sleeve assembly that can realize grinding sleeve replacement, please see Figures 1-8 The invention point is: including grinding sleeve 1, positioning support 2, locking nut 3 and compensation gasket 4.

[0023] The grinding sleeve is cylindrical, and the outer surface of the grinding sleeve is a positioning circumferential surface 11.

[0024] The positioning support is a cylindrical support, and a flange 25 is arranged on the positioning support near one end. A bolt through hole 251 is arranged on the flange, and the positioning support can be fixedly installed on the main shaft or driving part of the grinding equipment by threading the bolt. The other end of the positioning support is a clamping head, the center of the clamping head is provided with a mounting hole, the hole diameter of the mounting hole is consistent with the diameter of the positioning circumferential surface of the grinding sleeve, and the bottom surface of the mounting hole constitutes an axial positioning support surface 21. An external thread 24 is arranged on the outside of the clamping head. A positive taper inclined surface 23 is arranged on the upper end of the outside of the clamping head. A plurality of slits 22 are arranged on the side wall of the clamping head in the circumferential direction, the slits are arranged in the axial direction of the clamping head and penetrate through the axial length of the clamping head, so that the clamping head is arranged in a multi-petal form.

[0025] The locking nut is a hexagonal nut, and the hexagonal surface on the outside of the locking nut is an operating surface 31 for tightening and loosening the nut. The internal thread hole 32 matches the external thread on the clamping head. A reverse taper inclined surface 33 is arranged on the inner hole of the locking nut near one end, and the taper of the reverse taper inclined surface is consistent with the taper of the positive taper inclined surface. The tapers of the two are preferably 1:10. The taper design can generate uniform axial extrusion force when the locking nut is tightened, which is efficiently converted into radial contraction force of the clamping head, realizing rapid centering and firm fixing of the grinding sleeve, and facilitating force transmission release during disassembly.

[0026] The compensation gasket is used to compensate the axial direction of the grinding sleeve after the grinding sleeve is worn in the axial direction. The outer diameter of the compensation gasket is consistent with the hole diameter of the mounting hole on the clamping head.

[0027] In the initial installation state, the grinding sleeve is inserted into the mounting hole of the clamping head, and the inner end of the grinding sleeve is in contact with the axial positioning support surface of the positioning support; in the state after axial compensation, the compensation gasket and the grinding sleeve are sequentially inserted into the mounting hole of the clamping head, the inner end of the compensation gasket is in contact with the axial positioning support surface of the mounting hole, and the outer end surface of the compensation gasket is in contact with the inner end surface 12 of the grinding sleeve. The locking nut is screwed with the external thread of the clamping head, and the reverse taper surface and the forward taper surface are extruded to cause a slight elastic deformation of the clamping head in the radial direction, and the deformation amount is preferably 0.01-0.05 mm, which can firmly clamp the grinding sleeve through the radial contraction force, and will not cause plastic damage to the clamping head due to excessive deformation, thereby ensuring the accuracy of repeated clamping and the service life of the clamping head.

[0028] In the present application, the material of the positioning support is 40Cr alloy structural steel, which has high strength, toughness and wear resistance, and can further improve the comprehensive mechanical properties after quenching and tempering, so as to effectively withstand the clamping force and impact force during grinding and ensure the stability of the positioning accuracy. The material of the compensation gasket is stainless steel SUS304, which has good corrosion resistance and dimensional stability, is not easy to deform and rust due to environmental factors or debris pollution during grinding, can maintain accurate thickness for a long time, and ensures the reliability of the compensation effect.

[0029] The installation steps of the replaceable grinding sleeve are as follows: First, the positioning support 2 of the grinding sleeve assembly is fixed and installed on the main shaft or driving component of the grinding equipment through the mounting hole 251 on the mounting flange 25 by using a bolt.

[0030] Then, the positioning cylindrical surface 11 of the grinding sleeve 1 is aligned with the mounting hole on the positioning support 2, the inner end surface of the grinding sleeve 1 is attached to the axial positioning support surface 21 of the positioning support 2, and rapid positioning is realized.

[0031] Finally, the inner thread 32 of the locking nut 3 is connected with the outer thread 24 of the positioning support 2, the reverse taper surface of the locking nut 3 is in pressure contact with the forward taper surface 23 of the positioning support 2, and the installation and fixation of the grinding sleeve are completed.

[0032] The replacement process of the grinding sleeve is as follows: When the grinding sleeve 1 needs to be replaced due to wear, the locking nut 3 is loosened first.

[0033] Then, the worn grinding sleeve 1 is taken out of the positioning support 2.

[0034] Next, the new grinding sleeve 1 is installed according to the installation steps, and the axial positioning support surface 21 of the positioning support 2 is attached, the reverse tapered surface of the locking nut 3 is matched with the positive tapered surface 23 of the positioning support 2 for positioning, the operating surface 31 of the locking nut 3 is rotated to realize fastening connection, and the replacement is completed.

[0035] The specific implementation of the grinding sleeve grinding compensation method is as follows: During the operation of the grinding equipment, the displacement sensor monitors the axial wear of the grinding sleeve 1 in real time.

[0036] When the sensor detects that the wear reaches the expected threshold value, such as 0.5mm, the system issues a warning, prompting that compensation is needed.

[0037] The operator dismounts the grinding sleeve 1 from the grinding sleeve assembly, selects a compensation gasket with a thickness corresponding to the wear, such as a 0.5mm compensation gasket 4, according to the wear, such as 0.5mm.

[0038] The compensation gasket 4 is installed in the mounting hole of the positioning support 2, so that the compensation gasket is in contact with the axial positioning support surface.

[0039] The grinding sleeve 1 is reinstalled in the mounting hole of the positioning support 2 and is in contact with the outer end surface of the compensation gasket, and the locking nut 3 is tightened and fixed.

[0040] The machine is started, trial grinding is performed, high-precision measuring instruments are used to detect the size accuracy and surface roughness of the workpiece after trial grinding. If the requirements are met, the compensation operation is completed; if the requirements are not met, the thickness of the compensation gasket is adjusted again, and the above compensation steps are repeated until the satisfactory grinding effect is achieved.

[0041] Although the embodiments and drawings of the present application are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit of the present application and the appended claims, therefore, the scope of the present application is not limited to the disclosed contents of the embodiments and drawings.

Claims

1. A grinding sleeve assembly enabling replacement of the grinding sleeve, characterized by: The grinding sleeve, the positioning support, the locking nut and the compensation gasket are included. The grinding sleeve is in a columnar shape, and the outer surface of the grinding sleeve is a positioning circumferential surface. The positioning support is in a columnar shape, and a flange is arranged on the positioning support near one end, and a bolt through hole is arranged on the flange; the other end of the positioning support is a clamping head, the center of the clamping head is provided with a mounting hole, the diameter of the mounting hole is consistent with the diameter of the positioning circumferential surface of the grinding sleeve, and the bottom surface of the mounting hole constitutes an axial positioning support surface; an external thread is arranged on the outside of the clamping head; a positive taper inclined surface is arranged on the upper end of the outside of the clamping head; a plurality of slits are uniformly arranged on the side wall of the clamping head in the circumferential direction, the slits are arranged in the axial direction of the clamping head, and the slits penetrate through the axial length of the clamping head. The internal thread hole of the locking nut is matched with the external thread on the clamping head; a reverse taper inclined surface is arranged on the internal hole of the locking nut near one end, and the taper of the reverse taper inclined surface is consistent with the taper of the positive taper inclined surface. The compensation gasket is used to compensate the axial direction of the grinding sleeve after the grinding sleeve is worn in the axial direction. In the initial installation state, the grinding sleeve is inserted into the mounting hole of the clamping head, and the inner end of the grinding sleeve is in contact with the axial positioning support surface of the positioning support. In the state after the axial compensation, the compensation gasket and the grinding sleeve are sequentially inserted into the mounting hole of the clamping head in the inside-outside direction, the inner end of the compensation gasket is in contact with the axial positioning support surface of the mounting hole, and the outer end surface of the compensation gasket is in contact with the inner end surface of the grinding sleeve; the locking nut is screwed with the external thread of the clamping head, the reverse taper inclined surface and the positive taper inclined surface are extruded, the clamping head is elastically deformed in the radial direction, and the clamping and fixing of the grinding sleeve are realized.

2. The replaceable grinding cover assembly of claim 1, wherein: The material of the positioning support is 40Cr alloy structural steel, and the material of the compensation gasket is stainless steel SUS304.

3. The replaceable grinding cover assembly of claim 1, wherein: The outer diameter of the compensation gasket is consistent with the hole diameter of the mounting hole on the clamping head.

4. The replaceable grinding cover assembly of claim 1, wherein: The elastic deformation amount of the clamping head in the radial direction is 0.01-0.05 mm.

5. The replaceable grinding cover assembly of claim 1, wherein: The tapers of the reverse taper inclined surface and the positive taper inclined surface are 1:

10.

6. A grinding wheel wear compensation method for a grinding wheel assembly that enables replacement of the grinding wheel based on any one of claims 1-5, characterized in that, The method comprises the following steps: Step 1, during the operation of the grinding equipment, the displacement sensor monitors the axial wear of the grinding sleeve in real time; when the sensor detects that the wear reaches the expected threshold, the system issues a warning, prompting that compensation is needed; Step 2, the operator dismounts the grinding sleeve from the grinding sleeve assembly, selects a compensation gasket with a thickness corresponding to the wear according to the wear; Step 3, the compensation gasket is installed into the mounting hole of the positioning support, so that the compensation gasket is in contact with the axial positioning support surface; Step 4, the grinding sleeve is reinstalled into the mounting hole of the positioning support and is in contact with the outer end surface of the compensation gasket, and the locking nut is tightened; Step 5, the machine is started, trial grinding is performed, high-precision measuring instruments are used to detect the size precision and surface roughness of the workpiece after trial grinding; if the requirements are met, the compensation operation is completed; if the requirements are not met, the thickness of the compensation gasket is adjusted again, and the above compensation steps are repeated until the satisfactory grinding effect is achieved.

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