Grinding wheel chuck

Abstract

The invention discloses a grinding wheel chuck, and belongs to the technical field of grinding machine equipment. The grinding wheel chuck is divided into a grinding wheel inner chuck and a grinding wheel outer chuck, the grinding wheel inner chuck and the grinding wheel outer chuck are provided with step surfaces which are consistent in size and are matched with a grinding wheel sinking shoulder to clamp the grinding wheel from the inside of the grinding wheel, the conical surface of the grinding wheel spindle and the conical surface of the grinding wheel inner chuck are locked through a locking groove and a ball, and the grinding wheel inner chuck and the grinding wheel outer chuck are connected through a fastener. The end cover is pressed into a counter bore of the grinding wheel inner chuck and fixed through an elastic piece, the grinding wheel inner chuck and the grinding wheel outer chuck are provided with an inner chuck ring groove and an outer chuck ring groove respectively, and balance blocks are placed in the grooves. The device has the advantages of simple structure, convenience in operation, stability, reliability and the like.

Description

Technical Field

[0001] The invention relates to a grinding wheel chuck and belongs to the technical field of grinding machine equipment. Background Art

[0002] The grinding wheel chuck is used to clamp the grinding wheel. It is an essential tool for grinding processing equipment, especially for plane forming grinding machines. In the prior art, the grinding wheel is installed on the grinding machine by installing the grinding wheel chuck on the main shaft of the grinding machine, and the flange is used to clamp and tighten the grinding wheel on both sides. Two problems may occur during use. First, the flange is clamped on both sides of the grinding wheel, and the grinding wheel may be deformed or even broken due to the unbalanced force; second, this installation method mainly relies on the friction generated by the flange and the side of the grinding wheel to tighten the grinding wheel. Therefore, during the rotation process, the grinding wheel will slide in the radial direction. This sliding will result in insufficient precision when processing the workpiece surface. In addition, the traditional grinding wheel chuck protrudes from the end face of the grinding wheel, which has processing limitations for some special working conditions. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the shortcomings of technical grinding wheel chucks that easily cause deformation and cracking of the grinding wheel and slippage during processing. A grinding wheel chuck is proposed, in which a step surface is provided on the grinding wheel chuck, which cooperates with the grinding wheel shoulder to clamp the grinding wheel from the inside of the grinding wheel, thereby preventing the two sides of the grinding wheel from being deformed or even broken due to the action of unbalanced force; at the same time, the grinding wheel can be double-pressed axially and radially, thereby improving safety and stability, and also preventing the grinding wheel from sliding axially and radially during movement, thereby improving processing accuracy; the end face of the grinding wheel chuck is flush with the end face of the grinding wheel, thereby increasing the grinding wheel processing feed amount and being able to adapt to a wider processing range.

[0004] In order to solve the above technical problems, the present invention proposes a grinding wheel chuck including a grinding wheel, a grinding wheel chuck, a spindle and an end cover, wherein the grinding wheel chuck is divided into an inner grinding wheel chuck and an outer grinding wheel chuck. The inner and outer grinding wheel chucks are provided with step surfaces of the same size, and a countersunk shoulder matching the step is provided in the center hole of the grinding wheel. The inner and outer grinding wheel chucks cooperate with the countersunk shoulder to clamp the grinding wheel from the inside of the grinding wheel; the conical surface of the grinding wheel spindle and the conical surface of the inner grinding wheel chuck are locked by locking grooves and balls; the inner grinding wheel chuck and the outer grinding wheel chuck are connected by fasteners; the outer end of the inner grinding wheel chuck is provided with a countersunk hole, and the end cover is pressed into the countersunk hole and fixed by an elastic member; the inner and outer grinding wheel chucks are provided with an inner chuck ring groove and an outer chuck ring groove, respectively, and a balance block is placed in the groove.

[0005] The inner cavity of the main shaft end is provided with a balancing head sleeve, a balancing head is installed inside the balancing head sleeve, and the balancing head is connected to the main shaft tensioning mechanism.

[0006] A ball hole is arranged at the end of the grinding wheel main shaft, a locking ball is arranged in the ball hole, and a locking groove is arranged on the conical surface of the inner chuck of the grinding wheel.

[0007] The outer end of the inner chuck of the grinding wheel is provided with a countersink, the inner diameter of the countersink is equal to the outer diameter of the end cover, the depth of the countersink is consistent with the height of the end cover, and the end cover is pressed to further ensure that the chuck and the grinding wheel spindle are closely matched.

[0008] The inner chuck ring groove and the outer chuck ring groove correspond to each other, and both have dovetail-shaped cross sections.

[0009] The outer chuck of the grinding wheel is provided with a concave cavity, which can reduce the weight of the chuck.

[0010] The grinding wheel spindle is connected with a grinding wheel dynamic balance automatic detection and correction device, which can adjust the balance of the grinding wheel.

[0011] When the present invention is used, the shoulder of the grinding wheel is placed against the step of the inner chuck 3 of the grinding wheel, and the outer chuck 5 of the grinding wheel is installed. The step of the outer chuck of the grinding wheel corresponds to the shoulder of the other side of the grinding wheel, and the inner chuck 3 of the grinding wheel and the outer chuck 5 of the grinding wheel are fixed by fasteners; the conical surface of the inner chuck 3 of the grinding wheel is matched and positioned with the conical surface of the grinding wheel spindle 13, and then the locking ball is clamped into the locking groove 14 through the operation of the spindle tensioning mechanism, and the inner chuck 3 of the grinding wheel and the grinding wheel spindle 13 are locked, and the spindle tensioning mechanism is used to make the locking ball move up and down to realize the automatic loosening and locking of the grinding wheel chuck; the end cover 6 is pressed into the countersunk hole of the inner chuck 3 of the grinding wheel, and the elastic member clamps the end cover, and at the same time further ensures that the chuck and the grinding wheel spindle are closely matched and not easy to loosen.

[0012] The step surface of the grinding wheel chuck and the countersunk shoulder of the grinding wheel can compress the grinding wheel axially and radially to enhance stability and safety; the end cover has good sealing performance to prevent dust and debris from entering the structure and extend its service life; balancing blocks can be placed in the inner and outer chuck ring grooves to enhance the balance and stability of the grinding wheel during operation.

[0013] The present invention has the following advantages: it can avoid axial and radial sliding of the grinding wheel during movement, and cooperate with a high-precision micro-feed concave-convex grinding spindle device to achieve precise feeding and improve machining accuracy; the grinding wheel spindle and the grinding wheel chuck are taper-matched to ensure coaxiality and assembly accuracy; the structure is simple, and the grinding wheel chuck is automatically loosened and locked by the up and down movement of the locking ball, which makes it easy to install and freely replace the grinding wheel, thereby improving machining efficiency; the balance adjustment of the grinding wheel can be performed to further improve the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the grinding wheel chuck of the present invention.

[0015] Figure 2 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0016] In the figure: 1-grinding wheel, 2-inner chuck ring groove, 3-grinding wheel inner chuck, 4-outer chuck ring groove, 5-grinding wheel outer chuck, 6-end cover, 7-connecting screw, 8-locking screw, 9-balancing head, 10-balancing head sleeve, 11-elastic member, 12-outer chuck cavity, 13-grinding wheel spindle, 14-locking groove. DETAILED DESCRIPTION

[0017] The specific embodiments of the present invention are further described in detail below. The technologies or products not specified in the examples are all existing technologies or conventional products that can be purchased.

[0018] Example 1: Figure 1-2 As shown, the grinding wheel chuck mainly includes a grinding wheel 1, a grinding wheel spindle 13, an inner grinding wheel chuck 3, an outer grinding wheel chuck 5 and an end cover 6. The inner chuck 3 and the outer chuck 5 of the grinding wheel are provided with step surfaces of the same size. The grinding wheel 1 is provided with a countersunk shoulder matching the step in the center hole. The inner cavity of the spindle end is provided with a balancing head sleeve 10. The balancing head 9 is installed inside the balancing head sleeve 10 and fixed by a locking screw 8. The balancing head fixing sleeve is connected to the spindle 13 by a connecting screw 7, and the balancing head 9 is connected to the spindle tensioning mechanism; a ball hole is provided at the end of the grinding wheel spindle 13, and a locking ball is arranged in the ball hole. The conical surface of the inner chuck 3 of the grinding wheel is provided with a locking groove 14. When the spindle tensioning mechanism works, the locking ball is inserted into the locking groove 14, so that the conical surfaces of the grinding wheel spindle 13 and the inner chuck 3 of the grinding wheel are contacted, connected and locked with each other; the inner chuck 3 of the grinding wheel and the outer chuck 5 of the grinding wheel are connected by fasteners (not shown in the drawings); a countersunk hole is provided at the outer end of the inner chuck 3 of the grinding wheel, and the end cover 6 is pressed into the countersunk hole. The inner diameter of the countersunk hole is equal to the outer diameter of the end cover, and the end cover 6 is fixed by an elastic member 11.

[0019] The inner chuck 3 of the grinding wheel is provided with an inner chuck ring groove 2, and the outer chuck 5 is provided with an outer chuck ring groove 4. The inner chuck ring groove 2 and the outer chuck ring groove 4 correspond to each other, and the cross-sections are both dovetail-shaped. A balancing block can be placed in the groove, and the specific position and size are adjusted according to the actual working conditions. Its function is to enhance the balance and stability of the grinding wheel during operation.

[0020] The outer chuck 5 of the grinding wheel is provided with a concave cavity 12, which can reduce the weight of the chuck.

[0021] The grinding wheel spindle 13 is connected to a grinding wheel dynamic balance automatic detection and correction structure, which can adjust the balance of the grinding wheel.

[0022] The grinding wheel spindle 13 and the grinding wheel inner chuck 3 are tapered to ensure coaxiality and assembly accuracy.

[0023] The inner diameter of the countersink of the inner chuck 3 of the grinding wheel is equal to the outer diameter of the end cover 6. The compression end cover further ensures that the chuck and the grinding wheel spindle are closely matched and not easy to loosen. The end cover has good sealing performance, which can prevent dust and debris from entering the structure and extend the service life. The depth of the countersink is consistent with the height of the end cover, and the end face is flush.

[0024] The end face of the grinding wheel chuck is flush with the end face of the grinding wheel, and the grinding wheel processing feed amount is increased, which can adapt to a wider processing range.

[0025] Example 2: Figure 1-2 As shown, the grinding wheel chuck comprises a grinding wheel 1, a grinding wheel chuck, a spindle and an end cover 6, wherein the grinding wheel chuck is divided into an inner grinding wheel chuck 3 and an outer grinding wheel chuck 5. The inner and outer grinding wheel chucks are provided with step surfaces of the same size, and a countersunk shoulder matching the step is provided in the center hole of the grinding wheel. The inner and outer grinding wheel chucks match the countersunk shoulder to clamp the grinding wheel from the inside of the grinding wheel; the conical surface of the grinding wheel spindle 13 and the conical surface of the inner grinding wheel chuck 3 are locked through a locking groove 14 and a ball; the inner grinding wheel chuck and the outer grinding wheel chuck are connected by fasteners; the outer end of the inner grinding wheel chuck is provided with a countersunk hole, and the end cover is pressed into the countersunk hole and fixed by an elastic member; the inner and outer grinding wheel chucks are provided with an inner chuck ring groove and an outer chuck ring groove respectively, and a balance block is placed in the groove.

[0026] The technical contents of the present invention are explained above, but the protection scope of the present invention is not limited to the said contents. Within the knowledge scope of ordinary technicians in this field, various changes can be made to the technical contents of the present invention without departing from the purpose of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding wheel chuck, characterized in that: The grinding wheel chuck is divided into an inner grinding wheel chuck and an outer grinding wheel chuck. The inner and outer grinding wheel chucks are provided with step surfaces of the same size, which cooperate with the grinding wheel countersunk shoulder to clamp the grinding wheel from the inside of the grinding wheel. The grinding wheel spindle cone surface and the grinding wheel inner chuck cone surface are locked through locking grooves and balls. The grinding wheel inner chuck and the grinding wheel outer chuck are connected by fasteners, and the end cover is pressed into the grinding wheel inner chuck countersunk hole and fixed by an elastic member. The grinding wheel inner and outer chucks are respectively provided with an inner chuck ring groove and an outer chuck ring groove, and a balance block is placed in the groove.

2. The grinding wheel chuck according to claim 1, characterized in that: The inner cavity at the end of the grinding wheel spindle is provided with a balancing head sleeve, a balancing head is installed inside the balancing head sleeve, and the balancing head is connected to the spindle tensioning mechanism.

3. The grinding wheel chuck according to claim 1, characterized in that: The end of the grinding wheel spindle is provided with a ball hole, and a locking ball is arranged in the ball hole.

4. The grinding wheel chuck according to claim 1, characterized in that: The conical surface of the inner chuck of the grinding wheel is provided with a locking groove, and the outer end of the inner chuck of the grinding wheel is provided with a countersink, the inner diameter of the countersink is equal to the outer diameter of the end cover, and the depth of the countersink is consistent with the height of the end cover.

5. The grinding wheel chuck according to claim 1, characterized in that: The inner chuck ring groove and the outer chuck ring groove of the grinding wheel correspond to each other, and both have dovetail-shaped cross sections.

6. The grinding wheel chuck according to claim 1, characterized in that: The outer chuck of the grinding wheel is provided with a concave cavity.

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