Rapid positioning tool

Abstract

The utility model discloses a quick positioning tool. The main structure comprises a bottom plate, a bearing assembly is arranged in the middle of the bottom plate and composed of a first bearing block, a second bearing block and a third bearing block which are arranged in a triangular mode, the heights of the first bearing block, the second bearing block and the third bearing block are sequentially increased, the first bearing block, the second bearing block and the third bearing block accurately correspond to first, second and third concave parts in the bottom of a shell respectively, and stable supporting is achieved. And the first positioning assembly limits the mounting lug at the bottom of the shell in the vertical direction through the first rotary pressing air cylinder and the first supporting block. The second positioning assembly comprises an angle limiting assembly, an edge limiting assembly and a pushing assembly, the angle limiting assembly conducts right-angle limiting on the upper edge of the shell through a second rotating downward-pressing air cylinder and a special-shaped limiting block, the edge limiting assembly conducts side edge limiting in a similar mode, and the pushing assembly stretches into a fourth concave part on the outer side of the shell to be matched to form triangular limiting, so that the shell is accurately fixed in an omnibearing mode; the positioning precision is effectively improved, multiple defects of a traditional tool are overcome, the tool is suitable for positioning of multiple shells, and the machining efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of precision machining, and particularly relates to a rapid positioning tool. BACKGROUND

[0002] In the traditional CNC finishing process, the positioning of the shell usually adopts a relatively simple tooling fixture. The common practice is to use a height block, glue, and F clamps to directly place the shell between the jaws, and to preliminarily fix the shell by manual adjustment. Then, the operator uses a dial gauge and other measuring tools to measure the key parts of the shell according to experience to adjust the position of the shell and ensure its relative accuracy in the machining coordinate system. This positioning method, on the one hand, relies on the personal skills and experience of the operator, and the operation habits and proficiency of different operators differ greatly, which easily leads to unstable positioning accuracy. On the other hand, the stability is insufficient, and there is a risk of displacement during machining, and there is a risk of damaging the appearance of the product in the step of removing the glue. Furthermore, the entire positioning process is complicated and time-consuming, and a large amount of time is spent on repeated measurement and fine adjustment, which greatly reduces the production efficiency.

[0003] In addition, some factories use customized simple positioning plates, several positioning pins are arranged on the positioning plate, and the shell is preliminarily positioned by cooperating with the positioning pins through its own hole position. Then, the shell is fastened on the positioning plate by using a bolt and nut assembly. However, this method has many limitations. First, for the case where there is no suitable pre-made hole on the shell, this method is difficult to apply, and forcibly punching the hole will damage the structural integrity of the shell and affect the product performance. Second, although the cooperation accuracy of the positioning pin and the hole is guaranteed to a certain extent, in actual machining, the shell may still be slightly displaced due to external forces such as cutting force, and the bolt and nut fastening method cannot be dynamically adjusted in real time, and cannot correct such displacement deviation in time, which eventually leads to damaged machining accuracy, increased product scrap rate, increased production cost, and difficulty in meeting the current production demand for high efficiency and high precision.

[0004] Therefore, the above problems need to be solved. UTILITY MODEL CONTENT

[0005] UTILITY MODEL OBJECTIVE: In order to overcome the above shortcomings, the utility model aims to provide a rapid positioning tool, which precisely adapts to different recesses at the bottom of the shell by setting a supporting assembly in the middle of the bottom plate, and stably supports the shell. The first positioning assembly arranged on the bottom plate limits the shell in the vertical direction to prevent it from being displaced in the vertical direction during machining. The second positioning assembly arranged around the shell limits the shell in the horizontal direction to prevent it from being displaced in the horizontal direction, thereby solving the problems of traditional tool positioning accuracy depending on manual experience, complicated operation, being easily disturbed by external forces to cause displacement deviation, and limited application range.

[0006] Technical scheme: The utility model provides a quick positioning tool for the quick positioning shell in the CNC finish machining, including the bottom plate, the bottom plate middle part is equipped with the support subassembly, the shell is placed on the support subassembly, first positioning assembly, first positioning assembly is equipped in the bottom plate, is used for limiting the shell in vertical direction, second positioning assembly, second positioning assembly is equipped in the bottom plate, and is ringed in the shell outside, is used for limiting the shell in horizontal direction. The support subassembly provides stable support for the shell, ensures that the shell has initial placement datum in the tool, prevents displacement due to unstable placement during subsequent operations such as machining and detection; the first positioning assembly limits the shell from the vertical direction, effectively constraining the movement freedom of the shell in the vertical plane, keeping its fixed position in the height direction, avoiding the influence of up and down movement on machining accuracy or interference with other components; the second positioning assembly surrounds the shell in the horizontal direction, accurately limiting the horizontal displacement of the shell in the plane, preventing it from shifting forward, backward, left or right, and ensuring that the shell is always in the set machining or operating position. The design of the whole tool is based on the contour of the shell and the processing technology requirement, and the layout and structure of the support subassembly, the first positioning assembly and the second positioning assembly can be adjusted according to the size and shape characteristics of different shells to achieve quick and effective positioning of various types of shells. The first positioning assembly includes a first rotary down pressure cylinder and a first block, the first rotary down pressure cylinder and the first block are arranged on the bottom plate, the mounting ear extended from the bottom of the shell is arranged on the first block, and the first rotary down pressure cylinder is used to press the mounting ear on the first block in the vertical direction. The first rotary down pressure cylinder cooperates with the first block to act on the mounting ear extended from the bottom of the shell. The first block serves as the support base for the mounting ear, providing a placement plane, while the first rotary down pressure cylinder can accurately apply downward pressure to the mounting ear placed on the first block through its rotation and downward movement, reliably pressing the mounting ear in the vertical direction, thereby limiting the movement freedom of the mounting ear in that direction and achieving vertical positioning of the shell. The second positioning assembly includes an angle limiting assembly, an edge limiting assembly and a tightening assembly, the angle limiting assembly is used to limit the right angle of the shell in the horizontal direction, the edge limiting assembly is used to limit the side edge of the shell in the horizontal direction, and the tightening assembly is inserted into the fourth recess outside the shell in the horizontal direction to cooperate with the angle limiting assembly and the edge limiting assembly to form a triangular limiting. The angle limiting assembly is specially designed to limit the right angle of the shell in the horizontal direction, which can accurately clamp the right angle part, and the edge limiting assembly focuses on limiting the side edge of the shell in the horizontal direction by fitting the side edge to constrain the horizontal displacement of the side edge in the straight line direction. The tightening assembly is inserted into the fourth recess outside the shell in the horizontal direction to cooperate with the angle limiting assembly and the edge limiting assembly to form a triangular limiting.The triangular limiting structure utilizes the stability principle of a triangle, exerts force on the shell from different directions, firmly fixes the shell in the horizontal direction, limits the movement freedom of the shell in each direction in the plane, and realizes omnibearing horizontal positioning.

[0007] Further, the quick positioning tool in the application comprises a first supporting block, a second supporting block and a third supporting block, the first supporting block, the second supporting block and the third supporting block are installed on the bottom plate and arranged in a triangular layout, the height in the vertical direction increases from the first supporting block, the second supporting block to the third supporting block, the first supporting block corresponds to the first recess at the bottom of the shell, the second supporting block corresponds to the second recess at the bottom of the shell, and the third supporting block corresponds to the third recess at the bottom of the shell. The supporting assembly is arranged in a triangular layout on the bottom plate through the first supporting block, the second supporting block and the third supporting block, forming a stable multi-point supporting structure. This layout mode can correspond to the recesses at different positions of the bottom of the shell respectively, so that the supporting blocks are closely combined with the specific positions at the bottom of the shell, providing stable and balanced supporting force for the shell from the bottom, effectively dispersing the weight of the shell, and guaranteeing the stability of the shell when placed. The three supporting blocks increase in height in the vertical direction and correspond to different recesses at the bottom of the shell, which can better adapt to the irregular shape of the bottom of the shell and realize precise shape adaptation.

[0008] Further, the quick positioning tool in the application, the first supporting block is cylindrical, the second supporting block comprises a first base and a first boss, the first boss is arranged on the first base, the first base is rectangular, the first boss is cylindrical, the second recess on the bottom of the shell is embedded in the first boss, and the outer edge of the second recess is arranged on the first base, the third supporting block comprises a second base and a second boss, the second boss is arranged on the second base, the second base is rectangular, the second boss is cylindrical, and the third recess on the bottom of the shell is embedded in the second boss, and the outer edge of the third recess is arranged on the second base. The first supporting block is cylindrical, can form linear contact or small-area surface contact with the corresponding part of the bottom of the shell, provides local stable support for the shell, and the shape facilitates guiding when the shell is placed, so that the shell is more easily positioned; the first boss of the second supporting block is cylindrical, can be embedded in the second recess on the bottom of the shell, realizes accurate shape matching, supports and limits the shell at the part from the inside, the first base is rectangular, provides a placement plane for the outer edge of the second recess, further assists in fixing from the outside, forms an internal-external combined supporting mode, and the support stability of the local area of the shell is enhanced; the third supporting block is the same, the second boss is embedded in the third recess on the bottom of the shell to realize limiting in the shape matching mode, the second base supports the outer edge of the third recess, and reliable support is ensured for the shell at the position. Through the design that the boss is embedded in the recess and the base supports the outer edge, the connection between the supporting assembly and each part of the bottom of the shell is more close, and the positioning is more accurate.

[0009] Further, the quick positioning tool in the application, the angle limiting assembly comprises a second rotary pressing cylinder, a third base, a second supporting block and a first special-shaped limiting block, the second rotary pressing cylinder and the third base are arranged on the bottom plate, the second supporting block is arranged on the third base, and the first special-shaped limiting block is arranged at the edge of the second supporting block and extends out of the second supporting block. The shape of the second supporting block matches the right angle on the upper edge of the shell, and the second rotary pressing cylinder is used for pressing the first special-shaped limiting block on the second supporting block in the vertical direction. The first special-shaped limiting block is first adjusted to be in close contact with the right angle on the upper edge of the shell on the second supporting block, and then the second rotary pressing cylinder presses the first special-shaped block to fix the first special-shaped block and limit the horizontal movement of the shell at the right angle position.

[0010] Further, the quick positioning tool in the application, the edge limiting assembly comprises a fourth base, a third rotary down-pressing cylinder, a third supporting block and a second special-shaped limiting block, the fourth base is arranged on the bottom plate, the third rotary down-pressing cylinder and the third supporting block are arranged on the fourth base, the second special-shaped limiting block is arranged at the edge of the third supporting block and extends out of the third supporting block, the shape of the third supporting block is matched with the side edge of the upper edge of the shell, and the third rotary down-pressing cylinder is used for pressing the second special-shaped limiting block on the third supporting block in the vertical direction. Similarly, the second special-shaped block is first adjusted to be in close contact with the side edge of the upper edge of the shell on the third supporting block, and then the third rotary down-pressing cylinder presses and fixes the second special-shaped block, so as to limit the horizontal movement of the side edge of the upper edge of the shell.

[0011] Further, the quick positioning tool in the application, the edge limiting assembly comprises a fourth base, a third rotary down-pressing cylinder, a third supporting block and a second special-shaped limiting block, the fourth base is arranged on the bottom plate, the third rotary down-pressing cylinder and the third supporting block are arranged on the fourth base, the second special-shaped limiting block is arranged at the edge of the third supporting block and extends out of the third supporting block, the shape of the third supporting block is matched with the side edge of the upper edge of the shell, and the third rotary down-pressing cylinder is used for pressing the second special-shaped limiting block on the third supporting block in the vertical direction. Similarly, the second special-shaped block is first adjusted to be in close contact with the side edge of the upper edge of the shell on the third supporting block, and then the third rotary down-pressing cylinder presses and fixes the second special-shaped block, so as to limit the horizontal movement of the side edge of the upper edge of the shell.

[0012] The above technical scheme can be seen that the utility model has the following beneficial effects:

[0013] 1. The quick positioning tool has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the quick positioning tool of the utility model;

[0015] Figure 2 It is a structure schematic view of the quick positioning tool of the utility model plus the shell;

[0016] Figure 3 This is a first schematic diagram of the casing;

[0017] Figure 4 This is a second schematic diagram of the casing.

[0018] Explanation of reference numerals in the accompanying drawings: 1-Housing, 11-First recess, 12-Second recess, 13-Third recess, 14-Mounting ear, 15-Right angle, 16-Side, 17-Fourth recess, 2-Base plate, 3-Support assembly, 31-First support block, 32-Second support block, 33-Third support block, 321-First base, 322-First boss, 331-Second base, 332-Second boss, 4-First positioning assembly, 41-... 1. Rotary pressing cylinder, 42-First support block, 5-Second positioning component, 51-Angle limiting component, 511-Second rotary pressing cylinder, 512-Third base, 513-Second support block, 514-First irregularly shaped limiting block, 52-Side limiting component, 521-Fourth base, 522-Third rotary pressing cylinder, 523-Third support block, 524-Second irregularly shaped limiting block, 53-Pushing component, 531-Fifth base, 532-Linear cylinder. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] Combined with appendix Figure 1 , 2 As shown in Figures 3 and 4, a specific model of housing 1 is selected for positioning operation demonstration. The bottom of housing 1 is provided with a first recess 11, a second recess 12, and a third recess 13, and a mounting ear 14 extends from the bottom. The upper edge of housing 1 has a right angle 15, a side 16, and a fourth recess 17 on the outer side.

[0022] First, place the base plate 2 stably on the workbench and secure it firmly. As can be clearly seen in the attached diagram, the first support block 31 of the support assembly 3 installed in the middle of the base plate 2 is cylindrical, and its position precisely corresponds to the first recess 11 at the bottom of the housing 1. When placing the housing 1, as shown in the attached diagram... Figure 2As shown, the cylindrical surface can guide the preliminary positioning of the shell 1, so that the bottom of the shell 1 forms stable linear contact or small area surface contact with the first supporting block 31, thereby providing local support for the shell 1. The first base 321 of the second supporting block 32 is rectangular and is installed on the bottom plate 2. The first boss 322 above it is cylindrical and tightly fits the second recess 12 at the bottom of the shell 1. The second recess 12 is embedded in the first boss 322, and the outer edge is placed on the first base 321, thereby achieving precise positioning and stable support for the part of the shell 1. The second base 331 of the third supporting block 33 is also rectangular and is installed on the bottom plate 2. The second boss 332 is cylindrical and matches the third recess 13 at the bottom of the shell 1. The third recess 13 is embedded in the second boss 332, and the outer edge is supported by the second base 331. Through this triangular supporting method, the weight of the shell 1 is effectively dispersed, ensuring that the shell 1 is placed stably and accurately on the bottom plate 2.

[0023] Next, the first positioning assembly 4 comes into play. From the attached Figure 1 It can be seen that the first rotating down cylinder 41 and the first supporting block 42 have been installed on the bottom plate 2. The mounting ear 14 at the bottom of the shell 1 is placed on the first supporting block 42, which provides a stable placement plane for the mounting ear 14. Then, the first rotating down cylinder 41 is started, which exerts sufficient downward pressure on the mounting ear 14 through rotation and downward movement, tightly pressing the mounting ear 14 on the first supporting block 42 in the vertical direction, effectively limiting the movement freedom of the shell 1 in the vertical direction, ensuring that the shell 1 maintains a fixed position in the height direction, and avoiding upward and downward movement during subsequent processing.

[0024] Then, the second positioning assembly 5 performs horizontal positioning operation on the shell 1. As shown in the attached Figure 1As shown, the second rotating down cylinder 511 and the third base 512 in the corner limiting assembly 51 are installed on the bottom plate 2, and the second block 513 is located on the third base 512, which is accurately matched with the right angle 15 on the upper edge of the shell 1. First, the first special-shaped limiting block 514 is adjusted to the position close to the right angle 15 on the upper edge of the shell 1 at the edge of the second block 513, and then the second rotating down cylinder 511 is started to press the first special-shaped limiting block 514 on the second block 513 in the vertical direction, thereby accurately limiting the movement of the right angle 15 of the shell 1 in the horizontal direction. In terms of the edge limiting assembly 52, the fourth base 521 is installed on the bottom plate 2, the third rotating down cylinder 522 and the third block 523 are located on the fourth base 521, and the shape of the third block 523 is matched with the side edge 16 on the upper edge of the shell 1. After the second special-shaped limiting block 524 is adjusted to the position close to the side edge 16 on the upper edge of the shell 1 at the edge of the third block 523, the third rotating down cylinder 522 is started to press the second special-shaped limiting block 524 on the third block 523 in the vertical direction, thereby effectively restricting the displacement of the side edge 16 of the shell 1 in the horizontal direction. Finally, the fifth base 531 of the tightening assembly 53 is installed on the bottom plate 2, and the linear cylinder 532 is located on the fifth base 531. The driving linear cylinder 532 extends into the fourth recess 17 outside the shell 1 in the horizontal direction and abuts against the shell 1, and cooperates with the corner limiting assembly 51 and the edge limiting assembly 52 to form a triangular limiting structure. By using the stability principle of the triangle, the horizontal movement freedom of the shell 1 in all directions in the plane is restricted in all directions, and the shell 1 is always in the set machining position in the horizontal direction.

[0025] It can be seen from the embodiment that the rapid positioning tool can efficiently and accurately position the specific shell 1, the components are closely cooperated, and the problems of the traditional tool in positioning accuracy, operation convenience and application range are effectively solved, thereby providing a reliable solution for the shell positioning in precision machining.

[0026] The above embodiments are exemplary, and the purpose is to illustrate the technical concept and characteristics of the utility model, so that those skilled in the art can understand the content of the utility model and implement it, and the protection scope of the utility model cannot be limited thereby. Any equivalent changes or modifications made according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A rapid positioning tool for rapid positioning of a shell (1) during CNC finishing, characterized in that: it comprises a base plate (2), a supporting assembly (3) is arranged in the middle of the base plate (2), and the shell (1) is placed on the supporting assembly (3); a first positioning assembly (4) is arranged on the base plate (2) and used for limiting the shell (1) in the vertical direction, the first positioning assembly (4) comprises a first rotary down-pressing cylinder (41) and a first supporting block (42), an installation lug (14) extending from the bottom of the shell (1) is placed on the first supporting block (42), and the first rotary down-pressing cylinder (41) is used for pressing the installation lug (14) tightly on the first supporting block (42) in the vertical direction; and a second positioning assembly (5) is arranged on the base plate (2) and annularly arranged outside the shell (1), and used for limiting the shell (1) in the horizontal direction, the second positioning assembly (5) comprises an angle limiting assembly (51), an edge limiting assembly (52) and a pushing and tightening assembly (53), the angle limiting assembly (51) is used for limiting a right angle (15) on the shell (1) in the horizontal direction, the edge limiting assembly (52) is used for limiting a side edge (16) on the shell (1) in the horizontal direction, and the pushing and tightening assembly (53) is horizontally inserted into a fourth recess (17) outside the shell (1) to press tightly and form a triangular limiting together with the angle limiting assembly (51) and the edge limiting assembly (52).

2. The rapid positioning tool according to claim 1, characterized in that: the supporting assembly (3) comprises a first supporting block (31), a second supporting block (32) and a third supporting block (33), the first supporting block (31), the second supporting block (32) and the third supporting block (33) are installed on the base plate (2) and arranged in a triangular layout, the vertical direction height of the first supporting block (31), the second supporting block (32) and the third supporting block (33) is sequentially increased, the first supporting block (31) corresponds to a first recess (11) at the bottom of the shell (1), the second supporting block (32) corresponds to a second recess (12) at the bottom of the shell (1), and the third supporting block (33) corresponds to a third recess (13) at the bottom of the shell (1).

3. The rapid positioning tool according to claim 2, characterized in that: ​ ​ ​ ​ The first supporting block (31) is cylindrical, the second supporting block (32) comprises a first base (321) and a first boss (322), the first boss (322) is arranged on the first base (321), the first base (321) is rectangular, the first boss (322) is cylindrical, the second recess (12) at the bottom of the shell (1) is embedded in the first boss (322), and the outer edge of the second recess (12) is arranged on the first base (321); the third supporting block (33) comprises a second base (331) and a second boss (332), the second boss (332) is arranged on the second base (331), the second base (331) is rectangular, the second boss (332) is cylindrical, the third recess (13) at the bottom of the shell (1) is embedded in the second boss (332), and the outer edge of the third recess (13) is arranged on the second base (331).

4. The quick positioning tool according to claim 3, characterized in that: The angle limiting assembly (51) comprises a second rotary downward pressing cylinder (511), a third base (512), a second supporting block (513) and a first special-shaped limiting block (514), the second rotary downward pressing cylinder (511) and the third base (512) are arranged on the bottom plate (2), the second supporting block (513) is arranged on the third base (512), the first special-shaped limiting block (514) is arranged at the edge of the second supporting block (513) and extends out of the second supporting block (513), the shape of the second supporting block (513) matches the right angle (15) of the upper edge of the shell (1), and the second rotary downward pressing cylinder (511) is used for pressing the first special-shaped limiting block (514) on the second supporting block (513) in the vertical direction.

5. The quick positioning tool according to claim 4, characterized in that: The edge limiting assembly (52) comprises a fourth base (521), a third rotary downward pressing cylinder (522), a third supporting block (523) and a second special-shaped limiting block (524), the fourth base (521) is arranged on the bottom plate (2), the third rotary downward pressing cylinder (522) and the third supporting block (523) are arranged on the fourth base (521), the second special-shaped limiting block (524) is arranged at the edge of the third supporting block (523) and extends out of the third supporting block (523), the shape of the third supporting block (523) matches the side edge (16) of the upper edge of the shell (1), and the third rotary downward pressing cylinder (522) is used for pressing the second special-shaped limiting block (524) on the third supporting block (523) in the vertical direction.

6. The quick positioning tool according to claim 5, characterized in that: The pushing assembly (53) comprises a fifth base (531) and a linear cylinder (532), the fifth base (531) is arranged on the bottom plate (2), and the linear cylinder (532) is arranged on the fifth base (531); the linear cylinder (532) is driven, and the output end of the linear cylinder (532) extends into the fourth recess (17) and abuts against the shell (1).

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