Grinding machine mandrel disassembling and assembling tool

Abstract

The utility model belongs to the field of mechanical equipment repairing, and particularly relates to a grinding machine mandrel disassembling and assembling tool which is used for maintaining and repairing a grinding machine mandrel of a grinding machine. When faults such as transmission of the grinding machine occur, the grinding machine is integrally replaced instead of being repaired, and even the grinding machine is scrapped, so that the production efficiency is influenced, and the manufacturing cost is increased. A handheld body comprises an annular body part and a pair of supporting arms symmetrically extending in the axial direction, and clamping grooves are formed in the ends of the supporting arms. The operating rod penetrates through the main body part in the radial direction, a clamping ring is arranged at one end of the operating rod, a threaded section is arranged at the other end of the operating rod and comprises a small-diameter threaded section at the outer end and a large-diameter threaded section at the inner side, and a limiting nut is installed on the large-diameter threaded section. A plurality of components can be disassembled / assembled by using one tool, and the applicability and portability of an operation scene are also considered; the device is simple in structure, convenient to operate and easy to learn.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment repair, specifically relating to a tool for disassembling and assembling a grinding machine spindle, used for the maintenance and repair of a grinding machine spindle. Background Technology

[0002] Grinding machines are common cutting tools that play a vital role in the processing of materials such as metal, plastic, and wood. Grinding machines have many applications, and their performance varies depending on the structure, material, and operating environment.

[0003] For grinding machines, the main components include the motor, air circuit, bearings, grinding disc, mandrel, and rotor. These components work together very closely, and the precision requirements for these parts are extremely stringent. For example... Figure 1 As shown in the partial structure, the outer guide post of the spindle 8 is interference-fitted with the housing, and the outer end is threadedly connected to the housing through a threaded retainer 9 and presses the spindle 8. There are several symmetrically arranged claws 10 on the outer end face of the threaded retainer 9, and the spindle 8 has a threaded hole 11 at the outer end of the rotor.

[0004] Long-term use or improper operation can lead to various types of malfunctions in the grinder, such as motor abnormalities, air circuit blockage, and bearing wear. These issues can be addressed and replaced using conventional methods, which are not technically difficult or demanding and are easy to implement.

[0005] However, when the transmission mechanism is damaged, it is extremely difficult to replace. For example, the assembly relationship of the grinding machine spindle and rotor is very precise and complex. Once repaired, the lack of special disassembly and installation tools often leads to poor fit of the repaired parts, resulting in a decrease in transmission efficiency. Often, when encountering faults in the grinding machine transmission, the whole machine is replaced instead of being repaired, or even scrapped, which affects production efficiency and increases manufacturing costs.

[0006] When using a grinder to grind composite material parts, jamming problems often occur. The main reason is that a large amount of fine carbon powder enters the grinder during grinding, most noticeably near the grinder's spindle. Over time, this accumulation of stagnant material leads to insufficient removal by the grinder, failing to meet usage requirements.

[0007] Therefore, a tool is needed that can be used to disassemble and assemble the core shaft of a grinding machine. It should be simple and lightweight, and also suitable for complex structures, so as to achieve multiple functions in one tool and facilitate operation and maintenance. Summary of the Invention

[0008] This utility model proposes a tool for disassembling and assembling a grinding machine mandrel, addressing the structural characteristics of the mandrel and overcoming the lack of such tooling in the existing technology.

[0009] This utility model proposes a tool for disassembling and assembling a grinding machine spindle, including a handheld body and a control lever. The handheld body includes an annular main body portion and a pair of support arms extending symmetrically along the axial direction, with a groove at the end of each support arm. The control lever passes radially through the main body portion, with a retaining ring at one end and a threaded section at the other end, including a small-diameter threaded section at the outer end and a large-diameter threaded section at the inner side, with a limit nut installed on the large-diameter threaded section.

[0010] Advantageously, the light rod portion of the control lever is slidably connected to the radial through hole of the main body portion.

[0011] Advantageously, the limiting nut is used to protect the grinding machine spindle.

[0012] Advantageously, the length of the support arm is sufficient to extend into the jaws of the threaded retainer at the upper end of the mandrel.

[0013] Advantageously, the small-diameter threaded section is connected to the threaded hole on the upper end face of the spindle rotor.

[0014] Advantageously, the retaining ring serves as the force-bearing structure for hammering.

[0015] Beneficial effects: It allows multiple components to be disassembled / installed using a single tool, while also considering the applicability and portability of the operating scenarios; it has a simple structure, is easy to operate, and is easy to learn and use. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the grinding machine spindle;

[0017] Figure 2 This is a structural schematic diagram of the disassembly and assembly tool of this utility model.

[0018] 1. Handheld body; 2. Support arm; 3. Slot; 4. Control lever; 5. Snap ring; 6. Limit nut; 7. Threaded section; 8. Mandrel; 9. Threaded retaining ring; 10. Claw; 11. Threaded hole Detailed Implementation

[0019] See Figure 2 The illustrated embodiment of the grinding machine mandrel disassembly and assembly tool primarily utilizes a ring-shaped handheld body 1, taking into account the structural characteristics of the grinding machine mandrel. Two support arms 2 are designed on the handheld body 1, each with a slot 3. The height of the support arm 2 is determined by the position of the threaded retaining ring 9 on the mandrel, allowing it to fully extend to the top of the threaded retaining ring 9. The size of the slot 3 matches the size of the jaws 10 on the threaded retaining ring 9, and can be used for disassembling / tightening the threaded retaining ring 9.

[0020] Because the outer guide post of the mandrel 8 is press-fitted to the housing, it cannot be easily disassembled. The handheld body 1 also has a through-diameter control lever 4, with a threaded section 7 at one end and a retaining ring 5 at the other. By connecting the control lever 4 to the threaded hole 11 of the mandrel, and using the handheld body 1 as a hammer, the mandrel guide post and housing can be installed and disassembled.

[0021] In this embodiment, the threaded section 7 of the control lever 4 adopts a stepped thread design. The end threaded section connects to the threaded hole 11, and the rear threaded section is used to install the limit nut 6, which is used to fix and clamp the mandrel 8, protect the mandrel from impact, and limit the sliding stroke of the long-handled bolt. During use, on the one hand, the pulling force can be adjusted according to the size of the mandrel to avoid damage; on the other hand, for the safety of repair parts, the degree of movement of the control lever 4 can be limited to avoid obstruction when using other functions. This tool can be used to easily disassemble / install the grinding machine mandrel, replace damaged parts, and clean impurities.

[0022] The ring-shaped handheld body 1 and the support arm 2 with grooves 3 can directly reach into the grinder to remove / install the threaded retainer 9 on the mandrel, avoiding the need for multiple disassemblies such as removing the grinding disc first and then the bracket, thus achieving the purpose of convenient operation. It will also serve as an operating table when repairing the mandrel, allowing the mandrel 8 to be placed and fixed on it to prevent problems such as bending during the repair process.

[0023] The combination of the ring-shaped handheld body 1 and the control lever 4 realizes the function of an impact-type pin puller. The threaded section 7 of the control lever 4 is connected to the spindle 8, and the stepped thread structure realizes the functions of nut clamping and protection, achieving multiple benefits in one go. By operating the handheld body 1 to strike in the opposite direction, the spindle 8 can be easily separated from the housing. At the same time, the control lever 4 also acts as a lever, which can be used as a wrench handle during disassembly / installation.

[0024] During disassembly, align the slot 3 of the support arm 2 on the handheld body 1 with the claw 10 of the threaded retaining ring 9 and insert it. Then, remove the threaded retaining ring 9 by turning the operating lever 4. Tighten the limit nut 6 to adjust it to the appropriate position, and then thread the operating lever 4 to the spindle 8. Slide the handheld body 1 along the smooth rod of the operating lever 4 to strike the retaining ring 5 in the opposite direction, thereby separating the spindle guide post from the housing and achieving the purpose of disassembling the spindle.

[0025] During installation, perform the reverse steps.

Claims

1. A tool for disassembling and assembling a grinding machine spindle, characterized in that: The device includes a handheld body (1) and a control lever (4), wherein the handheld body (1) includes an annular body portion and a pair of support arms (2) extending symmetrically along the axial direction, and has a groove (3) at the end of the support arm (2); the control lever (4) passes radially through the body portion, and has a retaining ring (5) at one end of the control lever (4) and a threaded section (7) at the other end, including a small diameter threaded section at the outer end and a large diameter threaded section at the inner side, and a limit nut (6) is installed on the large diameter threaded section.

2. The tool for disassembling and assembling the grinding machine spindle according to claim 1, characterized in that: The smooth part of the control lever (4) is slidably connected to the radial through hole of the main body.

3. The tool for disassembling and assembling the grinding machine spindle according to claim 1, characterized in that: The limiting nut (6) is used to protect the grinding machine spindle.

4. The tool for disassembling and assembling the grinding machine spindle according to claim 1, characterized in that: The length of the support arm (2) is sufficient to extend into the pawl (10) of the threaded retainer (9) at the upper end of the spindle (8).

5. The tool for disassembling and assembling the grinding machine spindle according to claim 1, characterized in that: The small-diameter threaded section is connected to the threaded hole (11) on the upper end face of the spindle rotor.

6. The tool for disassembling and assembling the grinding machine spindle according to claim 1, characterized in that: The retaining ring (5) serves as the force-bearing structure for hammering.

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