Outer arc grinding machine grinding wheel locking and fixing structure

Abstract

The utility model discloses an outer arc grinding machine grinding wheel locking and fixing structure which comprises a driving motor and a grinding wheel body, a locking rod is fixedly installed at the outer end of the driving motor through an output shaft of the driving motor, an insertion cavity connected with the locking rod in an inserted mode is formed in the middle of the grinding wheel body, and a movable cavity is formed in the locking rod. A limiting groove and a positioning groove which are matched with each other are formed in the periphery of the movable cavity and the interior of the inserting cavity, a positioning clamping block which is connected with the limiting groove and the positioning groove in an inserted mode is slidably installed in the movable cavity, a rotating rod is rotatably installed in the movable cavity, and two rotating discs which are attached to the two sides of an inner cavity of the movable cavity are fixedly installed on the periphery of the rotating rod; and inclined arc-shaped sliding grooves are formed in the two rotating discs, sliding shafts in sliding fit with the arc-shaped sliding grooves are fixedly mounted at the two ends of each positioning clamping block, and the mounting and positioning efficiency of grinding wheels of various models can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to grinding machine tools, in particular to a locking and fixing structure for a grinding wheel of an external arc grinder. Background Art

[0002] When processing metal parts through a grinder, the grinding wheel inside the grinder needs to be replaced according to the material and processing requirements of the metal. The output shaft of the existing internal drive motor of the grinder is fixed to ensure the stability of its output, and the grinding wheel of the grinder is mainly connected to the output shaft of the drive motor. This results in that when the style and model of the grinding wheel changes, the output shaft of the existing structure with a fixed setting will be difficult to continue to be connected and fixed with these replaced grinding wheels, which will obviously reduce the locking and positioning effect of the grinder on the grinding wheel. For this reason, we propose a locking and fixing structure for the grinding wheel of an external arc grinder. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a locking and fixing structure for a grinding wheel of an external arc grinder to improve the installation and locking effects of grinding wheels of various models.

[0004] A locking and fixing structure for a grinding wheel of an external arc grinder comprises a driving motor and a grinding wheel body, wherein a locking rod is fixedly installed on the outer end of the driving motor through its output shaft, an inserting cavity connected to the locking rod is provided in the middle of the grinding wheel body, a movable cavity is provided in the locking rod, and a limiting groove and a positioning groove matching each other are provided on the periphery of the movable cavity and the inside of the inserting cavity, a positioning block connected to the limiting groove and the positioning groove is slidably installed in the movable cavity, a rotating rod is rotatably installed in the movable cavity, and two rotating disks respectively fitted with both sides of the inner cavity of the movable cavity are fixedly installed on the periphery of the rotating rod, and an inclined arc-shaped slide groove is provided in the two rotating disks, and sliding shafts slidably matched with the arc-shaped slide groove are fixedly installed at both ends of each positioning block.

[0005] Preferably, limiting slide grooves are provided on both sides of the inner cavity of the movable cavity, the inner and outer ends of the limiting slide grooves match the inner and outer ends of the inclined arc-shaped slide grooves, and the sliding shaft is slidably matched with the limiting slide grooves.

[0006] Preferably, a positioning tooth groove is formed on the outer end surface of the locking rod, and a positioning tooth plate which is plugged into the positioning tooth groove is installed on the outer end of the rotating rod.

[0007] Preferably, a limit plug hole is provided at the outer end of the rotating rod, a limit plug plate plugged into the limit plug hole is fixedly installed on the inner end surface of the positioning tooth plate through a connecting rod, and a spring is fixedly installed between the limit plug hole and the limit plug plate.

[0008] Preferably, positioning plates and movable plates that fit closely with the two sides of the grinding wheel body are fixed and plugged into the inner and outer sides of the locking rod respectively, a threaded curved groove is provided on the outer periphery of the locking rod, and a threaded sleeve that cooperates with the threaded curved groove is rotatably installed on the outer end surface of the movable plate.

[0009] Preferably, a limiting slide rail is provided on the periphery of the locking rod, and a limiting slider which is slidably matched with the limiting slide rail is fixedly mounted on the inner wall surface of the movable plate.

[0010] The beneficial effects of the utility model are embodied in:

[0011] The outer arc grinder grinding wheel locking and fixing structure, through the sliding cooperation between the sliding shaft and the arc-shaped sliding groove, enables the rotating disk to drive each positioning block to contract or expand in the movable cavity. When the grinding wheel body changes, resulting in a change in the diameter of the insertion cavity, it can always ensure that the positioning block can be plugged into the limit groove and the positioning groove, thereby achieving the effect of positioning the grinding wheel body outside the locking rod.

[0012] The external arc grinder grinding wheel locking and fixing structure can drive the movable plate to move around the locking rod through the threaded cooperation between the threaded sleeve and the threaded curved groove, and then cooperate with the positioning plate to position the two sides of the grinding wheel body after the grinding wheel body is installed, thereby further improving the positioning effect of the device on the grinding wheel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0014] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the external structure of the grinding wheel body of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal split structure of the active cavity of the utility model;

[0018] Figure 5 This is a schematic diagram of the internal split structure of the positioning tooth plate of the utility model;

[0019] Figure 6 It is a schematic diagram of the internal split structure of the threaded sleeve of the utility model.

[0020] In the accompanying drawings, 1, driving motor; 11, locking rod; 12, grinding wheel body; 13, inserting cavity; 14, movable cavity; 15, positioning block; 151, limiting groove; 152, positioning groove; 16, sliding shaft; 161, rotating rod; 162, rotating disk; 163, arc-shaped slide groove; 164, limiting slide groove; 17, positioning tooth groove; 171, positioning tooth plate; 172, limiting plug hole; 173, limiting plug plate; 174, spring;

[0021] 2. Positioning plate; 21. Movable plate; 22. Limiting slide rail; 23. Limiting slider; 24. Threaded curved groove; 25. Threaded sleeve. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0024] Example 1

[0025] See also Figure 1-6 The utility model provides a technical solution: a locking and fixing structure of an external arc grinder grinding wheel, comprising a driving motor 1 and a grinding wheel body 12, wherein a locking rod 11 is fixedly installed on the outer end of the driving motor 1 through its output shaft, an inserting cavity 13 which is plugged into the locking rod 11 is provided in the middle of the grinding wheel body 12, a movable cavity 14 is provided in the locking rod 11, a limiting groove 151 and a positioning groove 152 which match each other are provided on the periphery of the movable cavity 14 and the inside of the inserting cavity 13, a positioning block 15 which is plugged into the limiting groove 151 and the positioning groove 152 is slidably installed in the movable cavity 14, a rotating rod 161 is rotatably installed in the movable cavity 14, two rotating disks 162 which are respectively fitted with both sides of the inner cavity of the movable cavity 14 are fixedly installed on the periphery of the rotating rod 161, and an arc-shaped slide groove 163 which is inclined is provided in the two rotating disks 162, and sliding shafts 16 which slidably cooperate with the arc-shaped slide groove 163 are fixedly installed at both ends of each positioning block 15.

[0026] When installing the grinding wheel body 12, the grinding wheel body 12 is installed on the periphery of the locking rod 11 through the plug-in cooperation between the insertion cavity 13 and the locking rod 11, and then the rotating rod 161 is rotated in the locking rod 11 to drive the rotating disk 162 to rotate in the inner cavity of the movable cavity 14, so that the sliding cooperation between the inclined arc-shaped sliding groove 163 and the sliding shaft 16 drives each positioning block 15 to move outward in the limiting groove 151, so that the positioning block 15 and the positioning groove 152 on the periphery of the insertion cavity 13 are plugged into each other, so as to achieve the effect of positioning the grinding wheel body 12 on the periphery of the locking rod 11.

[0027] Example 2

[0028] The movable cavity 14 has limit slots 164 on both sides thereof. The inner and outer ends of the limit slots 164 match the inner and outer ends of the inclined arc slots 163 , and the sliding shaft 16 is slidably matched with the limit slots 164 .

[0029] Through the sliding cooperation between the limiting slide groove 164 and the sliding shaft 16, the movement direction of the positioning block 15 can be limited in the active cavity 14, so that the rotating rotating disk 162 can drive each positioning block 15 to contract or expand through the sliding cooperation between the sliding shaft 16 and the arc-shaped slide groove 163.

[0030] Example 3

[0031] A positioning tooth groove 17 is provided on the outer end surface of the locking rod 11, and a positioning tooth plate 171 which is plugged into the positioning tooth groove 17 is installed on the outer end of the rotating rod 161. A limiting hole 172 is provided on the outer end of the rotating rod 161, and a limiting plug plate 173 which is plugged into the limiting hole 172 is fixedly installed on the inner end surface of the positioning tooth plate 171 through a connecting rod, and a spring 174 is fixedly installed between the limiting hole 172 and the limiting plug plate 173.

[0032] When the rotating disk 162 is rotated, the positioning tooth plate 171 can be pulled outward in the positioning tooth groove 17 so that the two are separated from each other, thereby releasing the restriction effect on the rotating rod 161, and then the positioning tooth plate 171 is rotated, and the rotating rod 161 can be driven to rotate accordingly through the plug-in cooperation between the limiting plug plate 173 and the limiting plug hole 172, so as to achieve the effect of rotating the rotating disk 162. When the rotating disk 162 needs to be positioned, the positioning tooth plate 171 is released, and under the action of the restoring deformation of the spring 174, the positioning tooth plate 171 can be driven to reset inward, so that the positioning tooth plate 171 and the positioning tooth groove 17 are re-plugged, and then the plug-in effect between the limiting plug hole 172 and the limiting plug plate 173 can be used to position the rotating rod 161 and the rotating disk 162.

[0033] Example 4

[0034] A positioning plate 2 and a movable plate 21 that fit together with the two sides of the grinding wheel body 12 are fixed and plugged installed on the inner and outer sides of the locking rod 11 respectively. A threaded curved groove 24 is provided on the outer periphery of the locking rod 11. A threaded sleeve 25 that threadably cooperates with the threaded curved groove 24 is rotatably installed on the outer end surface of the movable plate 21. A limiting slide rail 22 is provided on the outer periphery of the locking rod 11. A limiting slider 23 that slides in cooperation with the limiting slide rail 22 is fixedly installed on the inner wall surface of the movable plate 21.

[0035] When the grinding wheel body 12 is installed, one side of it can be fitted with the positioning plate 2, and then the movable plate 21 can be inserted and installed on the periphery of the locking rod 11 through the sliding cooperation between the limit slider 23 and the limit slide rail 22. When the threaded sleeve 25 contacts the locking rod 11, the threaded sleeve 25 is rotated, and the threaded cooperation between it and the threaded curved groove 24 can drive the movable plate 21 to move inward, so that the movable plate 21 and the other side of the grinding wheel body 12 are fitted together, and then the grinding wheel body 12 can be positioned outside the locking rod 11 through the fitting effect of the positioning plate 2 and the movable plate 21 and the two sides of the grinding wheel body 12.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A grinding wheel locking and fixing structure for an external arc grinder, comprising a drive motor (1) and a grinding wheel body (12), characterized in that: The outer end of the driving motor (1) is fixedly mounted with a locking rod (11) via its output shaft; the middle of the grinding wheel body (12) is provided with an inserting cavity (13) plugged into the locking rod (11); a movable cavity (14) is provided in the locking rod (11); a limiting groove (151) and a positioning groove (152) which match each other are provided on the periphery of the movable cavity (14) and the inside of the inserting cavity (13); a sliding member (152) which matches the limiting groove (151) and the positioning groove (152) is slidably mounted in the movable cavity (14) 152) is inserted into the positioning block (15), a rotating rod (161) is rotatably installed in the movable cavity (14), and two rotating disks (162) are fixedly installed on the periphery of the rotating rod (161) and are respectively fitted with two sides of the inner cavity of the movable cavity (14), and the two rotating disks (162) are provided with inclined arc-shaped sliding grooves (163), and sliding shafts (16) that are slidably matched with the arc-shaped sliding grooves (163) are fixedly installed at both ends of each positioning block (15).

2. The locking and fixing structure for the grinding wheel of an external arc grinder according to claim 1 is characterized in that: The movable cavity (14) has limit slide grooves (164) on both sides of the inner cavity, the inner and outer ends of the limit slide groove (164) match the inner and outer ends of the inclined arc-shaped slide groove (163), and the sliding shaft (16) is slidably matched with the limit slide groove (164).

3. The locking and fixing structure for the grinding wheel of an external arc grinder according to claim 1, characterized in that: The outer end surface of the locking rod (11) is provided with a positioning tooth groove (17), and the outer end of the rotating rod (161) is plugged and installed with a positioning tooth plate (171) plugged into the positioning tooth groove (17).

4. The locking and fixing structure for the grinding wheel of an external arc grinder according to claim 3 is characterized in that: The outer end of the rotating rod (161) is provided with a limit plug hole (172), the inner end surface of the positioning tooth plate (171) is fixedly mounted with a limit plug plate (173) plugged into the limit plug hole (172) via a connecting rod, and a spring (174) is fixedly mounted between the limit plug hole (172) and the limit plug plate (173).

5. The locking and fixing structure for the grinding wheel of an external arc grinder according to claim 1, characterized in that: A positioning plate (2) and a movable plate (21) which are mutually fitted with two sides of the grinding wheel body (12) are respectively fixed and inserted on the inner and outer sides of the outer periphery of the locking rod (11). A threaded curved groove (24) is provided on the outer periphery of the locking rod (11). A threaded sleeve (25) which is threadably matched with the threaded curved groove (24) is rotatably installed on the outer end surface of the movable plate (21).

6. The locking and fixing structure for the grinding wheel of an external arc grinder according to claim 5, characterized in that: A limiting slide rail (22) is provided on the periphery of the locking rod (11), and a limiting slide block (23) which is slidably matched with the limiting slide rail (22) is fixedly mounted on the inner wall surface of the movable plate (21).

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