Inner hole positioning tool for grinding wheel machining

Abstract

The utility model discloses an inner hole positioning tool for grinding wheel machining, which comprises a mounting shaft and a three-jaw chuck arranged at one end of the mounting shaft, and further comprises a positioning component arranged on three jaws and used for positioning and clamping an inner hole of a grinding wheel, and the positioning component comprises a plurality of positioning plates arranged on two sides of the jaws. The sides, close to an inner hole of the grinding wheel, of the positioning plates and the clamping jaws are provided with arc-shaped faces, the adjacent positioning plates are connected through connecting assemblies, the adjacent positioning plates and the clamping jaws are connected through connecting assemblies, and the adjacent positioning plates and the clamping jaws are limited through limiting assemblies. Through the arrangement of the positioning assembly, under the matching action of the connecting assembly and the limiting assembly, the number of positioning plates is increased or decreased, so that the stability of positioning inner holes of grinding wheels of different models is improved while the positioning and clamping firmness of the inner holes of the grinding wheels is ensured; and therefore, the flexible adjustability and adaptability of positioning and clamping of inner holes of grinding wheels of different models are improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology for grinding wheel processing, specifically to an internal hole positioning tooling for grinding wheel processing. Background Technology

[0002] When machining grinding wheels, using the inner hole of the grinding wheel for positioning and fixation can ensure strong clamping while reducing interference during grinding wheel end face machining. In existing technology, multiple clamping plates are usually used to achieve centered positioning of the grinding wheel and to accommodate fixing of inner holes of different sizes. However, since the inner hole sizes of different models of grinding wheels vary, although multiple clamping plates can be used to clamp the inner hole of the grinding wheel by moving them apart, the contact area between the multiple clamping plates and the inner hole of the grinding wheel varies greatly. If the contact area between the clamping plates and the inner wall of the inner hole of the grinding wheel is too small, it will lead to unstable positioning of the grinding wheel, thus affecting the fixing strength of the grinding wheel. On the other hand, if the contact area between the clamping plates and the inner wall of the inner hole of the grinding wheel is too large, it will affect the flexibility of positioning and fixing of the inner hole of grinding wheels with different inner hole sizes.

[0003] Therefore, there is an urgent need for an internal hole positioning fixture for grinding wheel machining to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following technical solution: an internal hole positioning fixture for grinding wheel machining, comprising a mounting shaft and a three-jaw chuck disposed at one end of the mounting shaft, the three-jaw chuck being composed of a chuck body and three jaws slidably connected to the chuck body, and further comprising a positioning component disposed on the three jaws for internal hole positioning and clamping of the grinding wheel;

[0005] The positioning component includes multiple positioning plates disposed on both sides of the jaw. Each positioning plate and the jaw has an arc-shaped surface on the side near the inner hole of the grinding wheel. Each positioning plate is connected to each other and to the jaw through a connecting component and is limited between adjacent plates by a limiting component.

[0006] The connecting component includes a dovetail groove formed on the side of the jaw and the positioning plate away from the jaw. A dovetail plate is fixedly connected to the side of the positioning plate near the jaw, and the dovetail plate is matched with the dovetail groove.

[0007] The limiting component includes a first fixing plate and a second fixing plate fixedly connected to the side of the positioning plate near the chuck body. A limiting plate is slidably connected to the side of the first fixing plate away from the second fixing plate. The second fixing plate has a first limiting hole. The chuck claws have second limiting holes on both sides near the positioning plate. The first limiting hole and the second limiting hole are matched with the limiting plate. The first fixing plate is provided with a driving component for driving the limiting plate.

[0008] The limiting plate has an inclined surface on the side away from the positioning plate.

[0009] The drive assembly includes two T-shaped rods fixedly connected to the side of the first fixed plate near the second fixed plate. The sidewalls of the two T-shaped rods are slidably connected to a drive plate, and the end of the limiting plate away from the inclined surface is connected to the drive plate.

[0010] Springs are fitted onto the sidewalls of the two T-shaped rods, and the two ends of the two springs are respectively connected to the drive plate and the sidewalls of the T-shaped rods.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model, through the setting of the positioning component, and with the cooperation of the connecting component and the limiting component, utilizes the addition or removal of the positioning plate to ensure the firmness of the positioning and clamping of the inner hole of the grinding wheel, while improving the stability of the positioning of the inner hole of different types of grinding wheels, thereby enhancing the flexibility and adaptability of the positioning and clamping of the inner hole of different types of grinding wheels. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the positioning component structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the dovetail groove and the second limiting hole located in the claw of this utility model.

[0016] Figure 4 This is a schematic diagram of the limiting component and connecting component of this utility model;

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0018] In the diagram: 101, mounting shaft; 102, chuck body; 103, chuck jaw; 201, positioning plate; 202, arc-shaped surface; 301, dovetail groove; 302, dovetail plate; 401, first fixing plate; 402, limiting plate; 403, second fixing plate; 404, first limiting hole; 405, second limiting hole; 406, inclined surface; 501, drive plate; 502, T-shaped rod; 503, spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1-5 The figure shows an internal hole positioning fixture for grinding wheel machining, including a mounting shaft 101 and a three-jaw chuck disposed at one end of the mounting shaft 101. The three-jaw chuck consists of a chuck body 102 and three jaws 103 slidably connected to the chuck body 102. It also includes a positioning component disposed on the three jaws 103 for internal hole positioning and clamping of the grinding wheel.

[0022] The positioning assembly includes multiple positioning plates 201 disposed on both sides of the jaw 103. Each positioning plate 201 and the side of the jaw 103 near the inner hole of the grinding wheel have an arc-shaped surface 202. The positioning plates 201 are connected to each other and to the jaw 103 through a connecting assembly and are limited to each other by a limiting assembly.

[0023] It should be noted here that: by setting the positioning component, and with the cooperation of the connecting component and the limiting component, by adding or removing the positioning plate 201, the stability of positioning the inner hole of the grinding wheel is improved while ensuring the firmness of the positioning and clamping, and the stability of positioning the inner hole of different types of grinding wheels is improved. This, in turn, enhances the flexibility and adaptability of positioning and clamping the inner hole of different types of grinding wheels.

[0024] It is worth noting that during actual operation, the three jaws 103 of the three-jaw chuck can move away from or towards each other manually or hydraulically. As this is existing technology, it will not be elaborated on here. At the same time, the installation of the mounting shaft 101 can be used to connect the three-jaw chuck to the machine tool's rotary axis or to the machine tool's worktable, thereby enabling the processing of different processes on the grinding wheel. The specific use can be selected according to the actual situation, and no specific limitations are made here.

[0025] Please see Figures 1-4 The connecting components shown in the figure include a dovetail groove 301 opened on the side of the claw 103 and the positioning plate 201 away from the claw 103. A dovetail plate 302 is fixedly connected to the side of the positioning plate 201 near the claw 103. The dovetail plate 302 is matched with the dovetail groove 301.

[0026] It should be noted here that the connection components are configured to enable the positioning plate 201 to be assembled and connected with the claw 103 or two adjacent positioning plates 201.

[0027] Please see Figures 3-5 The limiting component shown in the figure includes a first fixing plate 401 and a second fixing plate 403 fixedly connected to the positioning plate 201 on the side near the chuck body 102. The first fixing plate 401 is slidably connected to the limiting plate 402 on the side away from the second fixing plate 403. The second fixing plate 403 has a first limiting hole 404. The chuck 103 has a second limiting hole 405 on both sides near the positioning plate 201. The first limiting hole 404 and the second limiting hole 405 are matched with the limiting plate 402. The first fixing plate 401 is provided with a driving component for driving the limiting plate 402. The limiting plate 402 has an inclined surface 406 on the side away from the positioning plate 201.

[0028] It should be noted here that the setting of the limiting component facilitates the connection and limiting between the positioning plate 201 and the claw 103 or between two adjacent positioning plates 201.

[0029] Working principle: In the process of grinding wheel processing, the grinding wheel first needs to be positioned and clamped. During the positioning and clamping process, the grinding wheel can be placed between three jaws 103, and the driving component inside the three-jaw chuck can be used to make the three jaws 103 move away from each other. During the process of the three jaws 103 moving away from each other, when the arc surface 202 of the three jaws 103 abuts against the inner wall of the grinding wheel, the movement of the three jaws 103 can be stopped. At this time, under the abutting action of the three jaws 103, the inner hole of the grinding wheel is positioned and clamped.

[0030] When clamping and positioning the inner hole of grinding wheels of different models, the connection between the positioning plate 201 and the jaw 103 can be achieved by utilizing the connection between the dovetail groove 301 and the dovetail plate 302. During the connection process between the positioning plate 201 and the jaw 103, when the limiting plate 402 on one side of the positioning plate 201 abuts against the side wall of the jaw 103, under the interaction force of the inclined surface 406 and the guiding action of the drive component, the limiting plate 402 will be pushed to retract towards the first fixed plate 401. As the positioning plate 201 is continuously pushed, when the dovetail plate 302 and the dovetail groove 301 are fully inserted, the limiting plate 402 will engage with the second limiting hole 405 on the side wall of the jaw 103. At this time, under the elastic action of the drive component, the limiting plate 402 will be pushed into the second limiting hole 405, thereby achieving the connection and limiting between the positioning plate 201 and the jaw 103 under the blocking action of the limiting plate 402.

[0031] Furthermore, during the assembly of the positioning plates 201, the number of positioning plates 201 can be controlled according to the size of the inner hole of the grinding wheel, without affecting the movement of the chucks 103 away from or close to each other. By assembling and connecting multiple positioning plates 201, the contact area for positioning the inner hole of the grinding wheel is increased. This ensures the firmness of the positioning and clamping of the inner hole of the grinding wheel, while improving the stability of the positioning of the inner hole of the grinding wheel. Consequently, it enhances the flexibility and adaptability of positioning and clamping the inner hole of different types of grinding wheels.

[0032] Example 2

[0033] Please see Figure 5 This embodiment further illustrates Example 1. The driving assembly shown in the figure includes two T-shaped rods 502 fixedly connected to the side of the first fixed plate 401 near the second fixed plate 403. The driving plate 501 is slidably connected to the sidewalls of the two T-shaped rods 502. The end of the limiting plate 402 away from the inclined surface 406 is connected to the driving plate 501.

[0034] It should be noted here that, through the setting of the drive component, when it is necessary to release the connection limit between two adjacent positioning plates 201, the limit plate 402 can be moved out from the first limit hole 404 on the second fixed plate 403 or the second limit hole 405 on the claw 103 by pushing the drive plate 501, thereby facilitating the disassembly of the two adjacent positioning plates 201 or the positioning plate 201 and the claw 103.

[0035] Please see Figure 4 and Figure 5 The two T-shaped rods 502 shown in the figure are fitted with springs 503 on their side walls. The two ends of the two springs 503 are connected to the drive plate 501 and the side wall of the T-shaped rods 502, respectively.

[0036] It should be noted here that the spring 503 is used to provide a squeezing and pushing action on the movement of the limiting plate 402.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An internal hole positioning fixture for grinding wheel machining, comprising: The mounting shaft (101) and a three-jaw chuck disposed at one end of the mounting shaft (101), the three-jaw chuck being composed of a chuck body (102) and three jaws (103) slidably connected to the chuck body (102); Its characteristic is that it further includes: A positioning assembly provided on three jaws (103) for internal positioning and clamping of the grinding wheel; The positioning component includes multiple positioning plates (201) disposed on both sides of the jaw (103). Each positioning plate (201) and the jaw (103) have an arc-shaped surface (202) on the side near the inner hole of the grinding wheel. Each positioning plate (201) is connected to each other and to the jaw (103) by a connecting component and is limited between adjacent positions by a limiting component.

2. The internal hole positioning fixture for grinding wheel machining according to claim 1, characterized in that: The connecting component includes a dovetail groove (301) formed on the side of the claw (103) and the positioning plate (201) away from the claw (103). A dovetail plate (302) is fixedly connected to the side of the positioning plate (201) near the claw (103). The dovetail plate (302) is matched with the dovetail groove (301).

3. The internal hole positioning fixture for grinding wheel machining according to claim 2, characterized in that: The limiting component includes a first fixing plate (401) and a second fixing plate (403) fixedly connected to the side of the positioning plate (201) near the chuck body (102). A limiting plate (402) is slidably connected to the side of the first fixing plate (401) away from the second fixing plate (403). The second fixing plate (403) has a first limiting hole (404). The claws (103) have second limiting holes (405) on both sides near the positioning plate (201). The first limiting hole (404) and the second limiting hole (405) are matched with the limiting plate (402). The first fixing plate (401) is provided with a driving component for driving the limiting plate (402).

4. The internal hole positioning fixture for grinding wheel machining according to claim 3, characterized in that: The limiting plate (402) has an inclined surface (406) on the side away from the positioning plate (201).

5. The internal hole positioning fixture for grinding wheel machining according to claim 4, characterized in that: The drive assembly includes two T-shaped rods (502) fixedly connected to the side of the first fixed plate (401) near the second fixed plate (403). The drive plate (501) is slidably connected to the side walls of the two T-shaped rods (502). The end of the limiting plate (402) away from the inclined surface (406) is connected to the drive plate (501).

6. The internal hole positioning fixture for grinding wheel machining according to claim 5, characterized in that: Springs (503) are sleeved on the side walls of the two T-shaped rods (502), and the two ends of the two springs (503) are respectively connected to the drive plate (501) and the side wall of the T-shaped rods (502).

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