Positioning tool for shell part

Abstract

The utility model discloses a positioning tool for shell parts. The positioning tool comprises a base, a first fixing assembly and a second fixing assembly. A reference surface is arranged on the side face of the base and used for providing a positioning reference for the shell part. A positioning pin is arranged on the base; the shell part comprises a mounting part and a connecting part, a through hole is formed in the mounting part, and the through hole is matched with the positioning pin; the first fixing assembly is matched with the connecting part of the shell part to fix the connecting part; the second fixing assembly is matched with the mounting part of the shell part to fix the mounting part; according to the utility model, the positioning pin is arranged on the base, the positioning pin can be inserted into the mounting part of the shell part to perform axial preliminary positioning on the mounting part, meanwhile, the first fixing assembly is arranged to fix and limit the connecting part of the shell part, and finally, the second positioning assembly is utilized to tightly press the mounting part on the base, so that three-point fixing is realized; and the shell part is stably clamped, so that subsequent turning operation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a positioning tool for shell parts. Background Art

[0002] During the machining process, some parts with special structures are difficult to fix and clamp, and it is difficult to perform high-precision machining; the shell parts in this application are irregular in shape, and the shell parts include a rectangular mounting portion, and a cylindrical connecting portion is also provided on the other side of the mounting portion. The shell parts need to be fixed and clamped in multiple directions to facilitate subsequent processing. The existing fixing devices can usually only clamp and fix one part of the shell parts, and it is difficult to clamp them firmly. Therefore, the shell parts are prone to shaking during processing, resulting in poor processing accuracy and many defective products. Utility Model Content

[0003] The utility model aims to provide a positioning tool for shell parts, so as to solve the problem that the shell parts are difficult to clamp and fix during machining.

[0004] The utility model is realized by the following technical solutions:

[0005] A positioning tool for a shell part, comprising a base, a first fixing component and a second fixing component; a reference surface is provided on the side of the base, and the reference surface is used to provide a positioning reference for the shell part; a positioning pin is provided on the base; the shell part comprises a mounting portion and a connecting portion, and a through hole is provided on the mounting portion, and the through hole cooperates with the positioning pin; the first fixing component cooperates with the connecting portion of the shell part to fix the connecting portion; the second fixing component cooperates with the mounting portion of the shell part to fix the mounting portion.

[0006] Furthermore, a mounting groove is provided on the mounting portion of the shell part, the through hole is connected to the mounting groove, the width of the mounting groove is greater than the diameter of the through hole, and the positioning pin includes a thick shaft portion and a thin shaft portion, the thick shaft portion cooperates with the mounting groove, and the thin shaft portion cooperates with the diameter of the through hole above the mounting groove.

[0007] Furthermore, the connecting portion of the shell part is provided with a connecting hole, the first fixing assembly includes a fixing block and a limiting shaft, the fixing block is connected to the base, a waist-shaped hole is provided on the fixing block, and both ends of the limiting shaft are respectively inserted into the waist-shaped hole and the connecting hole to fix the connecting portion.

[0008] Furthermore, a group of limit pins are arranged on the base, and positioning holes cooperating with the limit pins are arranged below the fixed block, and the limit pins are used to position the fixed block.

[0009] Furthermore, the second fixing assembly includes a pressure plate, a fixing bolt and a supporting bolt, the supporting bolt is threadedly connected to one end of the pressure plate, the other end of the supporting bolt abuts against the base, the other end of the pressure plate is inserted into the mounting groove of the mounting part and abuts against the lower surface of the mounting groove, the fixing bolt is located between the mounting part and the supporting bolt, and the fixing bolt passes through the pressure plate and is threadedly connected to the base.

[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0011] 1) In the utility model, a positioning pin is provided on the base, and the positioning pin can be inserted into the mounting portion of the shell part to perform preliminary axial positioning on it. At the same time, a first fixing component is provided to fix and limit the connecting portion of the shell part. Finally, the second positioning component is used to press the mounting portion on the base to achieve three-point fixation, so that the shell part is clamped firmly and convenient for subsequent machining operations.

[0012] 2) In the utility model, a waist-shaped hole is provided on the fixed block of the first positioning component. After the limiting shaft passes through the waist-shaped hole, it is plugged into and matched with the connecting hole of the shell part, thereby preventing the shell part from rotating along its own axis. At the same time, the limiting shaft can move up and down in the waist-shaped hole, thereby being able to limit the shell parts of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 The utility model is a schematic diagram of the overall assembly structure of the positioning tooling of the shell parts.

[0015] Figure 2 It is a structural schematic diagram of a base in a positioning tool for shell parts of the utility model.

[0016] Figure 3 The utility model is a schematic diagram of the structure of the shell part in the positioning tool of the shell part.

[0017] Among them: 1-base, 11-reference surface, 12-limit pin, 2-positioning pin, 21-thick shaft portion, 22-thin shaft portion, 3-first fixing component, 31-fixing block, 311-waist-shaped hole, 32-limiting shaft, 4-second fixing component, 41-pressure plate, 42-support bolt, 43-fixing bolt, 5-shell part, 51-installing portion, 511-through hole, 512-installing groove, 52-connecting portion, 522-connecting hole. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0019] Embodiment 1:

[0020] The main structure of the utility model is a positioning tool for shell parts, such as Figure 1 As shown, it includes a base 1, a first fixing component 3 and a second fixing component 4; a reference surface 11 is provided on the side of the base 1, and the reference surface 11 is used to provide a positioning reference for the shell part 5; a positioning pin 2 is provided on the base 1; the shell part 5 includes a mounting portion 51 and a connecting portion 52, and a through hole 511 is provided on the mounting portion 51, and the through hole 511 cooperates with the positioning pin 2; the first fixing component 3 cooperates with the connecting portion 52 of the shell part 5 to fix the connecting portion 52; the second fixing component 4 cooperates with the mounting portion 51 of the shell part 5 to fix the mounting portion 51.

[0021] The base 1 is a cylindrical metal structural part. A reference surface 11 is provided on one side of the base 1. The reference surface 11 is a planar structure. When processing the shell part 5, the reference surface 11 on the base 1 is used as the processing reference. When setting and fixing the shell part 5, the reference surface 11 is also used as the installation reference for installation and fixing. A positioning pin 2 is provided on the base 1, and the positioning pin 2 is set at the geometric center position of the base 1. The shell part 5 includes a mounting portion 51 and a connecting portion 52. A through hole 511 is provided on the mounting portion 51 of the shell part 5. The mounting portion 51 of the shell part 5 can be inserted into the positioning pin 2 for preliminary positioning. The first fixing component 3 can cooperate with the connecting portion 52 to fix the connecting portion 52 of the shell part 5; the second fixing component 4 cooperates with the mounting portion 51 of the shell part 5 to fix the mounting portion 51; at the same time, the axial direction, the mounting portion 51 and the connecting portion 52 of the shell part 5 are fixed in three places to ensure the stability of the shell part 5 on the positioning tooling.

[0022] Embodiment 2:

[0023] Based on the above embodiment, this embodiment further defines the positioning pin 2, such as Figure 2As shown, the mounting portion 51 of the housing part 5 is provided with a mounting groove 512, the through hole 511 is connected to the mounting groove 512, the width of the mounting groove 512 is greater than the diameter of the through hole 511, the positioning pin 2 includes a thick shaft portion 21 and a thin shaft portion 22, the thick shaft portion 21 matches the mounting groove 512, and the thin shaft portion 22 matches the diameter of the through hole 511 above the mounting groove 512. The positioning pin 2 includes a thick shaft portion 21 and a thin shaft portion 22, the thin shaft portion 22 is arranged above the thick shaft portion 21, and the thick shaft portion 21 is fixedly connected to the base 1; the mounting portion 51 of the housing part 5 is provided with a mounting groove 512, the mounting groove 512 is connected to the through hole 511, after the positioning pin 2 is inserted into the mounting groove 512 from the bottom of the mounting portion 51, its thin shaft portion 22 continues to be inserted into the through hole 511, the thick shaft portion 21 is in the mounting groove 512, and the thick shaft portion 21 and the thin shaft portion 22 cooperate to position the housing part 5. The other parts of this embodiment are the same as those of the above embodiment and will not be described again here.

[0024] Embodiment 3:

[0025] Based on the above embodiment, this embodiment further defines the first fixing component 3, such as Figure 1 and Figure 3 As shown, the connection part 52 of the shell part 5 is provided with a connection hole 522, and the first fixing assembly 3 includes a fixing block 31 and a limiting shaft 32. The fixing block 31 is connected to the base 1, and a waist-shaped hole 311 is provided on the fixing block 31. The two ends of the limiting shaft 32 are respectively inserted into the waist-shaped hole 311 and the connection hole 522 to fix the connection part 52. The first fixing assembly 3 includes a fixing block 31 and a limiting shaft 32. The fixing block 31 and the base 1 are fixed to the base 1 by two bolts. The fixing block 31 is arranged on one side of the base 1 and located on the side of the connection part 52 of the shell part 5. A waist-shaped hole 311 is provided on the fixing block 31. The limiting shaft 32 passes through the waist-shaped hole 311 and then is inserted into the connection hole 522. The diameter of the limiting shaft 32 matches the width of the waist-shaped hole 311, so that the shell part 5 can be limited to the left and right. The other parts of this embodiment are the same as the above embodiment, and will not be repeated here.

[0026] Embodiment 4:

[0027] On the basis of the above embodiment, this embodiment further adds a limit pin 12, a group of limit pins 12 are provided on the base 1, and a positioning hole cooperating with the limit pin 12 is provided below the fixed block 31, and the limit pin 12 is used to position the fixed block 31. Preferably, the base 1 is provided with a limit pin 12, and there are two limit pins 12, which are arranged in parallel, and a positioning hole is provided below the fixed hole, and the positioning hole cooperates with the limit pin 12. After the positioning hole of the fixed block 31 is inserted with the positioning pin 2, the fixed block 31 can be kept stable. The other parts of this embodiment are the same as the above embodiment, and will not be repeated here.

[0028] Embodiment 5:

[0029] On the basis of the above embodiment, the present embodiment further defines a second component, wherein the second fixing component 4 includes a pressing plate 41, a fixing bolt 43 and a supporting bolt 42, wherein the supporting bolt 42 is threadedly connected to one end of the pressing plate 41, and the other end of the supporting bolt 42 abuts against the base 1, and the other end of the pressing plate 41 is inserted into the mounting groove 512 of the mounting portion 51 and abuts against the lower surface of the mounting groove 512, and the fixing bolt 43 is located between the mounting portion 51 and the supporting bolt 42, and the fixing bolt 43 passes through the pressing plate 41 and is threadedly connected to the base 1. The two ends of the pressing plate 41 of the second component are respectively connected to the mounting groove 512 of the mounting portion 51 and the supporting bolt 42, and the fixing bolt 43 passes through the pressing plate 41 and is threadedly connected to the base 1 to press the pressing plate 41, thereby pressing the mounting portion 51 of the housing part 5 on the base 1. The other parts of the present embodiment are the same as the above embodiment, and will not be repeated here.

[0030] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when used. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0031] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A positioning tool for a housing part, characterized in that: It includes a base, a first fixing component and a second fixing component; a reference surface is provided on the side of the base, and the reference surface is used to provide a positioning reference for the shell part; a positioning pin is provided on the base; the shell part includes a mounting part and a connecting part, and the mounting part is provided with a through hole, and the through hole cooperates with the positioning pin; the first fixing component cooperates with the connecting part of the shell part to fix the connecting part; the second fixing component cooperates with the mounting part of the shell part to fix the mounting part.

2. The positioning tool for housing parts according to claim 1, characterized in that: A mounting groove is provided on the mounting portion of the shell part, the through hole is connected to the mounting groove, the width of the mounting groove is greater than the diameter of the through hole, and the positioning pin includes a thick shaft portion and a thin shaft portion, the thick shaft portion cooperates with the mounting groove, and the thin shaft portion cooperates with the diameter of the through hole above the mounting groove.

3. The positioning tool for housing parts according to claim 1, characterized in that: The connecting part of the shell part is provided with a connecting hole, the first fixing assembly includes a fixing block and a limiting shaft, the fixing block is connected to the base, a waist-shaped hole is provided on the fixing block, and the two ends of the limiting shaft are respectively inserted into the waist-shaped hole and the connecting hole to fix the connecting part.

4. The positioning tool for housing parts according to claim 3, characterized in that: A group of limit pins are arranged on the base, and positioning holes cooperating with the limit pins are arranged below the fixing block, and the limit pins are used to position the fixing block.

5. The positioning tool for housing parts according to claim 2, characterized in that: The second fixing assembly includes a pressing plate, a fixing bolt and a supporting bolt. The supporting bolt is threadedly connected to one end of the pressing plate, and the other end of the supporting bolt abuts against the base. The other end of the pressing plate is inserted into the mounting groove of the mounting portion and abuts against the lower surface of the mounting groove. The fixing bolt is located between the mounting portion and the supporting bolt, and the fixing bolt passes through the pressing plate and is threadedly connected to the base.

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