Detecting and grinding device for symmetrical positioning keys of guide sleeve

Abstract

The utility model discloses a detecting and grinding device for symmetrical positioning keys of a guide sleeve, the guide sleeve is provided with an inner hole, the positioning keys are symmetrically arranged in the inner hole along the axis, and the detecting and grinding device comprises positioning mechanisms corresponding to the positioning keys and grinding mechanisms arranged at the positioning mechanisms. The positioning mechanism comprises a column body which can be arranged in the inner hole in a penetrating mode, and positioning grooves attached to the positioning keys are formed in the side wall of the column body; the coping mechanism is a coping plate arranged on each inner surface of the positioning groove, and each coping plate is sequentially provided with an inclined section and a vertical section from top to bottom. According to the detecting and grinding device, symmetrical positioning of the positioning key to be ground is achieved through the positioning mechanism, on the basis, the symmetrical precision of the positioning key can be guaranteed after the positioning key is ground through the grinding mechanism, and therefore the problems that at present, manual grinding surface precision is insufficient, and follow-up use is affected by symmetry degree deviation are solved.

Description

Technical Field

[0001] The present application relates to the technical field of guide sleeves for vacuum circuit breakers, and in particular to a device for detecting and grinding symmetrical positioning keys of a guide sleeve. Background Art

[0002] In vacuum circuit breakers, guide sleeves are usually used in conjunction with insulating cylinders, vacuum interrupter chambers and other components. The guide sleeve is an indispensable component. It plays a vital role in the normal operation and long-term stable operation of the circuit breaker by ensuring the linear motion of the moving conductive rod, reducing friction and providing support. It mainly realizes the functions of radial positioning and axial support, and effectively prevents radial displacement of the moving contact of the vacuum interrupter chamber when the insulating rod is subjected to radial force.

[0003] The guide sleeve structure is as shown in the instruction manual. Figure 1 As shown, the guide sleeve has an inner hole in which positioning keys are symmetrically arranged along the axis. The guide sleeve is usually formed by extrusion. Since the positioning keys of the guide sleeve have precise positioning and anti-torsion functions when subsequently assembled into the vacuum circuit breaker, the symmetry of the symmetrically arranged positioning keys needs to be of high precision. However, due to the roughness of the surface of the guide sleeve after extrusion, the actual molding specifications (external dimensions) of the positioning keys are larger than the design specifications, such as Figure 2 The solid line in the middle is the extruded positioning key, and the dotted line is the designed positioning key specification. After forming, the surface of each positioning key is ground to form the positioning key designed at the dotted line.

[0004] Since the positioning key is located in the inner hole of the guide sleeve, it is not convenient to use mechanical grinding. Therefore, the current grinding operation of the positioning key is usually to grind the surface of the positioning key with a handheld grinding tool to achieve the designed size. However, due to the influence of manual factors and the positioning key is located inside the inner hole, the surface size of the positioning key is difficult to meet the requirements during grinding, and the symmetry of the symmetrical positioning key may deviate. Figure 5 As shown, it affects the anti-twist function of the guide sleeve during later use. Summary of the Invention

[0005] In response to the above-mentioned problems, the present application aims to provide a detection and grinding device for the symmetrical positioning keys of a guide sleeve, which realizes the symmetrical positioning of the positioning keys to be ground through a positioning mechanism, and can ensure the symmetrical accuracy of the positioning keys after grinding the positioning keys through the grinding mechanism, thereby solving the current problems of insufficient surface accuracy during manual grinding and the problem of symmetry deviation affecting subsequent use.

[0006] To achieve the above object, the technical solution adopted in the present application is as follows: A detection and grinding device for a guide sleeve symmetric positioning key, the guide sleeve has an inner hole, and positioning keys are symmetrically arranged along the axis in the inner hole, characterized in that: the detection and grinding device includes a positioning mechanism corresponding to each positioning key, and a grinding mechanism arranged at the positioning mechanism.

[0007] Preferably, the positioning mechanism includes a cylinder that can be inserted into the inner hole, and positioning grooves that fit with each positioning key are formed on the side wall of the cylinder.

[0008] Preferably, the grinding mechanism is a grinding plate arranged on each inner surface of the positioning groove.

[0009] Preferably, each grinding plate has an inclined section and a vertical section in sequence from top to bottom.

[0010] Preferably, a support is arranged at the bottom of the cylinder, and a return spring that is supported on the support is sleeved at the bottom of the vertical section.

[0011] The beneficial effect of the present application is that the detection and grinding device realizes the symmetric positioning of the positioning key to be ground through the positioning mechanism. On this basis, the symmetric accuracy of the positioning key can be guaranteed after grinding by the grinding mechanism, thus solving the problems of insufficient surface accuracy in current manual grinding and the influence of symmetry deviation on subsequent use. Description of the Drawings

[0012] Figure 1 It is a top view structure diagram of the guide sleeve.

[0013] Figure 2 It is Figure 1 The enlarged view at A in

[0014] Figure 3 It is a diagram of the symmetric positioning key.

[0015] Figure 4 It is a diagram showing the deviation of the symmetry of the positioning key after current manual grinding.

[0016] Figure 5 It is a front view structure diagram of the detection and grinding device of the present application.

[0017] Figure 6 It is a top view structure diagram of the detection and grinding device of the present application.

[0018] Figure 7 It is a side view structure diagram of the detection and grinding device of the present application.

[0019] Figure 8 It is a diagram showing the grinding when the guide sleeve to be sleeved on the cylinder in the present application.

[0020] Figure 9 It is in the present applicationFigure 8 Schematic diagram of reciprocating driving the guide sleeve for grinding up and down based on this.

[0021] Figure 10 Schematic diagram corresponding to the vertical section of the positioning key and the grinding plate in this application.

[0022] Figure 11 Schematic diagram of setting a return spring in this application. Specific implementation manner

[0023] In order to enable ordinary technicians in the art to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Refer to the attached Figures 1 to 11 A detection and grinding device for symmetric positioning keys of a guide sleeve shown. The guide sleeve 1 has an inner hole 1a, and positioning keys 11 are symmetrically arranged along the axis in the inner hole 1a. At present, the positioning keys in the extruded guide sleeve 1 are ground manually. In order to solve the problems of insufficient surface quality of the positioning keys 11 and deviation of the symmetry of the symmetric positioning keys 11 affecting the subsequent use effect during current manual grinding, this application is provided with a detection and grinding device, as Figures 5 - 7 shown, including a positioning mechanism corresponding to each positioning key 11 and a grinding mechanism arranged at the positioning mechanism. Among them, the symmetric positioning of the positioning key 11 to be ground is realized through the positioning mechanism. On this basis, after the positioning key 11 is ground by the grinding mechanism, the symmetric accuracy of the positioning key 11 can be guaranteed, thereby solving the problems of insufficient surface accuracy in current manual grinding and deviation of symmetry affecting subsequent use.

[0025] Specifically, as Figures 5 - 7 shown, the positioning mechanism includes a column 2 that can be inserted into the inner hole 1a, and a positioning groove 2a that fits with each positioning key 11 is provided on the side wall of the column 2. The positioning groove 2a is preferably formed by machining and has a high symmetric accuracy, thereby realizing the symmetric positioning reference for the positioning key 11. On this basis, each side of the positioning key 11 is ground by the subsequent grinding mechanism, and the symmetric accuracy of the positioning key 11 after grinding can be guaranteed, improving the grinding quality.

[0026] Specifically, as Figures 7 - 9 shown, the grinding mechanism is a grinding plate 3 provided on each inner surface of the positioning groove 2a. The distance between the grinding plates 3 is the designed width of the positioning key 11. The guide sleeve 1 is sleeved on the column 2, and the positioning key 11 to be ground is driven by an external force to be embedded into the positioning groove 2a and contact the grinding plate 3, as Figure 9As shown by the arrow, by reciprocally driving the guide sleeve 1 up and down, the grinding plate 3 can grind the surface of the positioning key 11. When the positioning key 11 can smoothly slide up and down relative to the grinding plate 3, that is, when the grinding dimension is reached, the guide sleeve 1 can be disassembled from the cylinder 2 to complete the grinding of a single guide sleeve 1, while ensuring the grinding quality of the surface of the positioning key 11 and the symmetry of the symmetric positioning key 11 at the same time.

[0027] Since the guide sleeve 1 has a certain body hardness, in order to facilitate the positioning key 11 to be ground to smoothly embed into the positioning groove 2a and contact the grinding plate 3, as Figure 7 shown, each of the grinding plates 3 successively has an inclined section 31 and a vertical section 32 from top to bottom. As Figure 8 shown, the distance between the symmetric grinding plates 3 at the top of the inclined section 31 is greater than the width of the positioning key 11 to be ground, facilitating the positioning key 11 to embed into the positioning groove 2a. After the positioning key 11 is embedded, since the horizontal distance of the inclined section 31 gradually decreases, it gradually contacts the positioning key 11, that is, gradually increases the grinding depth of the positioning key 11, and gradually grinds the positioning key 11 to the designed dimension. When the positioning key 11 moves down to the vertical section 32, its surface is further vertically ground to ensure the verticality of its surface.

[0028] During the above grinding operation, there is a certain contact force between the positioning key 11 and the grinding plate 3, resulting in a certain operating resistance when the positioning key 11 reciprocates up and down for grinding. Therefore, to reduce this operating resistance, as Figure 11 shown, a support 4 is provided at the bottom of the cylinder 2, and a return spring 5 supported on the support 4 is sleeved at the bottom of the vertical section 32. When driving the positioning key 11 to move down for grinding, the return spring 5 is compressed. Then, when the positioning key 11 moves up, the elastic action of the return spring 5 drives the positioning key 11 to move up. Thus, during the reciprocating driving process up and down, the operating resistance can be effectively reduced through the return spring 5, facilitating the positioning key 11 to quickly complete the grinding operation.

[0029] The principle of this application is: when grinding the positioning key 11, the positioning key 11 is embedded from the top side of the positioning groove 2a. During the embedding process, the positioning key 11 gradually contacts the inclined section 31 of the grinding plate 3 to realize the step-by-step grinding operation of the positioning key 11, and by reciprocally driving the positioning key 11 up and down, the complete grinding of the positioning key 11 is realized. At the same time, during the up and down driving process, the elastic action of the return spring 5 reduces the resistance of the grinding operation. When the positioning key 11 is located at the vertical section 32, the side wall of the positioning key 11 is vertically ground to ensure the verticality of its side wall, and at the same time, the symmetry of the positioning key 11 after grinding is ensured through the positioning groove 2a.

[0030] The above has shown and described the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application will also have various changes and improvements, and all these changes and improvements fall within the scope of the present application claimed.

Claims

1. A detecting and grinding device for symmetric positioning keys of a guide sleeve. The guide sleeve (1) has an inner hole (1a), and positioning keys (11) are symmetrically arranged along the axis in the inner hole (1a). It is characterized in that: The detection and grinding device includes a positioning mechanism corresponding to each positioning key (11), and a grinding mechanism arranged at the positioning mechanism; The positioning mechanism includes a cylinder (2) that can be inserted into the inner hole (1a), and a positioning groove (2a) that fits each positioning key (11) is provided on the side wall of the cylinder (2); The grinding mechanism is a grinding plate (3) provided on each inner surface of the positioning groove (2a).

2. The detection and grinding device according to claim 1, wherein: Each of the grinding plates (3) has an inclined section (31) and a vertical section (32) in sequence from top to bottom.

3. The detection and grinding device according to claim 2, characterized in that: A support (4) is provided at the bottom of the cylinder (2), and a return spring (5) that is supported on the support (4) is sleeved at the bottom of the vertical section (32).

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