Quick-change tool structure

Abstract

The utility model relates to a kind of quick-change tooling structures, comprising: fixed seat, clamping seat and fixed clamp, fixed clamp is set on clamping seat, clamping seat is clamped on fixed seat by clamping piece;The fixed seat includes fixed seat main body, dovetail block is set on the lower surface of fixed seat main body, dovetail block extends to the inside of dovetail groove of workbench, the upper surface of fixed seat main body is provided with positioning frame;The clamping seat includes clamping seat main body, the clamping seat main body is located above the positioning frame, and the lower surface of clamping seat main body is provided with locating block, the locating block extends to the inside of positioning frame, and the side wall of locating block is contacted with the side wall in the inside of positioning frame.The quick-change tooling structure, clamping seat and fixed seat are set using split type between, when needing to replace tooling fixture, clamping seat can be disassembled and replaced under the premise of not disassembling fixed seat.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a quick-change tooling structure. Background Technology

[0002] In industrial production fields such as machinery manufacturing, processing, and assembly, tooling fixtures are a core component of "process equipment" (referred to as "tooling"). They refer to special positioning, clamping, or auxiliary devices designed to meet specific production needs, used to ensure the accuracy, stability, and efficiency of workpieces during processing, assembly, and inspection.

[0003] Tooling fixtures are used in many fields, and are frequently used in CNC milling machine tools. A common method for installing tooling fixtures involves inserting a dovetail block from the side into the dovetail groove of the machine tool's worktable (or directly inserting screws into the dovetail groove and then tightening the nuts to secure the fixture). Tightening the screws then lifts the dovetail block, thus fixing the fixture to the worktable. While this method is simple and reliable, changing the fixture requires loosening multiple screws, separating it from the worktable, and then reversing the process to install another fixture on the worktable. Both methods require loosening each screw individually, which is cumbersome and inefficient. Therefore, a quick-change tooling structure is proposed to address these issues. Utility Model Content

[0004] Based on the above description, this utility model provides a quick-change tooling structure, which solves the technical problems pointed out in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a quick-change tooling structure, including: a fixed base, a snap-fit ​​base and a fixing fixture, wherein the fixing fixture is disposed on the snap-fit ​​base and the snap-fit ​​base is snapped onto the fixed base by a snap-fit ​​component; The fixed base includes a fixed base body, a dovetail block is provided on the lower surface of the fixed base body, the dovetail block extends into the dovetail groove of the worktable, and a positioning frame is provided on the upper surface of the fixed base body. The latching seat includes a latching seat body, which is located above the positioning frame. A positioning block is provided on the lower surface of the latching seat body. The positioning block extends into the interior of the positioning frame, and the sidewall of the positioning block contacts the sidewall inside the positioning frame.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the upper surface of the fixed base body is provided with a threaded through hole penetrating the dovetail block, and a fastening screw that is threadedly connected to the workbench is threaded in the threaded through hole.

[0008] Furthermore, the upper surface of the fixing base body is provided with two sets of mounting grooves, which are symmetrically distributed. The positioning frame is located between the two sets of mounting grooves, and the snap-fit ​​component is provided at the mounting groove.

[0009] Furthermore, the lower surface of the snap-fit ​​base body is provided with two snap-fit ​​crossbars, which are located on both sides of the positioning block. The snap-fit ​​component includes two elastic tube clamps, which are snapped into each other with the snap-fit ​​crossbars.

[0010] Furthermore, the fixing base also includes two opening slots, which are respectively disposed on the two side walls inside the positioning frame. Side threaded holes are provided on both sides outside the positioning frame, and the side threaded holes are in communication with the opening slots.

[0011] Furthermore, a partition plate is provided inside the opening groove, which divides the interior of the opening groove into a first space and a second space. The two second spaces are located between the two first spaces, and the first spaces are located between the partition plate and the side threaded hole. The two second spaces are open on opposite sides.

[0012] Furthermore, the locking seat also includes at least two locking slots, which are respectively disposed on both sides of the positioning block and are symmetrically distributed.

[0013] Furthermore, the snap-fit ​​component includes two elastic snap-fit ​​pieces, each elastic snap-fit ​​piece including a snap-fit ​​piece body. The two snap-fit ​​piece bodies are positioned on opposite sides as snap-fit ​​sections, and on opposite sides as positioning sections. The positioning sections are disposed inside the first space, and the snap-fit ​​sections are disposed inside the second space. The positioning section surface of the snap-fit ​​piece body is provided with a positioning side hole, which corresponds to the side threaded hole. The side of the positioning frame is provided with a positioning screw that is threadedly connected to the side threaded hole, and the positioning screw extends into the interior of the positioning side hole.

[0014] Furthermore, each of the two snap-fit ​​segments has a snap-fit ​​surface on its opposite side. The snap-fit ​​surface snaps into the interior of the snap-fit ​​groove. There is an inclined angle between the contact surface between the snap-fit ​​surface and the upper and lower side walls of the snap-fit ​​groove. When the snap-fit ​​surface and the snap-fit ​​groove are pressed against each other, the snap-fit ​​surface is subjected to a compressive force that moves towards the snap-fit ​​piece body.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This quick-change tooling structure, through the setting of components such as fixed seat and snap-fit ​​seat, allows the tooling fixture to be connected to the milling machine worktable through the cooperation between the fixed seat and the snap-fit ​​seat during use. At this time, the snap-fit ​​seat and the fixed seat are set separately. When it is necessary to change the tooling fixture, the snap-fit ​​seat can be disassembled and replaced without disassembling the fixed seat.

[0016] 2. This quick-change tooling structure, through the setting of the snap-fit ​​component, achieves the effect of mutual snap-fit ​​between the fixed seat and the snap-fit ​​seat. By using the snap-fit ​​between the separate fixed seat and the snap-fit ​​seat, the snap-fit ​​seat can be disassembled and replaced by simply pulling it upwards. Conversely, the snap-fit ​​seat can be connected to the fixed seat by pulling it downwards, thereby increasing the replacement efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of a quick-change tooling structure provided in an embodiment of this utility model; Figure 2 This is a cross-sectional view of the quick-change tooling in Embodiment 1 of this utility model; Figure 3 for Figure 2 Another structural diagram from a different perspective; Figure 4 for Figure 3 A magnified view of a portion of region A in the middle; Figure 5 This is a schematic diagram of the structure of the fixing base in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the card holder structure in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the elastic tube clamp in Embodiment 1 of this utility model; Figure 8 This is a cross-sectional view of the quick-change tooling in Embodiment 2 of this utility model; Figure 9 for Figure 8 Another structural diagram from a different perspective; Figure 10 for Figure 9 A magnified view of a portion of region A in the middle; Figure 11 This is a schematic diagram of the structure of the fixing base in Embodiment 2 of this utility model; Figure 12 This is a schematic diagram of the card holder structure in Embodiment 2 of this utility model; Figure 13 This is a schematic diagram of the elastic snap-fit ​​piece in Embodiment 2 of this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Fixture; 11. Fixture body; 12. Dovetail block; 13. Threaded through hole; 14. Mounting slot; 15. Positioning frame; 16. Opening slot; 17. Divider plate; 18. Side threaded hole; 2. Snap-fit ​​seat; 21. Snap-fit ​​seat body; 22. Positioning block; 23. Snap-fit ​​crossbar; 24. Snap-fit ​​groove; 3. Flexible pipe clamp; 4. Flexible snap-fit ​​piece; 41. Snap-fit ​​piece body; 42. Positioning side hole; 43. Snap-fit ​​surface; 5. Fixture. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Example 1 Please see Figure 1 , Figure 2 and Figure 8 A quick-change tooling structure includes: a fixed base 1, a snap-fit ​​base 2, and a fixing clamp 5; The fixed base 1 includes a dovetail block 12, which extends into the dovetail groove of the workbench and is fixed by fastening screws; The snap-fit ​​seat 2 is connected to the fixed seat 1 via a snap-fit ​​component, and a fixing clamp 5 is provided on the upper surface of the snap-fit ​​seat 2. The fixing clamp 5 includes, but is not limited to, a flat-nose pliers clamp and a pressure plate bolt clamp. Based on the above, the fixed seat 1 and the snap-fit ​​seat 2 are snapped together by snap-fit ​​components. At this time, the fixed seat 1 and the snap-fit ​​seat 2 are in a separable state. The fixed seat 1 is connected to the worktable by fastening screws. When the snap-fit ​​seat 2 is connected to the fixed fixture 5, it forms a clamping part for clamping the workpiece. When it is necessary to change to a different fixture, the snap-fit ​​seat 2 is pulled upward to separate it from the fixed seat 1, which facilitates the replacement.

[0021] like Figure 2 , Figure 3 as well as Figure 5 As shown, the fixing base 1 includes a fixing base body 11. At least two dovetail blocks 12 are provided on the lower surface of the fixing base body 11. A threaded through hole 13 is provided on the upper surface of the fixing base body 11, penetrating the dovetail blocks 12. The fastening screw is threadedly connected to the threaded through hole 13. A positioning frame 15 is provided on the upper surface of the fixing base body 11. Two sets of mounting grooves 14 are provided on the upper surface of the fixing base body 11. The two sets of mounting grooves 14 are symmetrically distributed. The positioning frame 15 is located between the two sets of mounting grooves 14. A snap-fit ​​component is provided inside the mounting groove 14. like Figures 2-4 , Figure 6 as well as Figure 7As shown, the snap-fit ​​base 2 includes a snap-fit ​​base body 21, which is located above the positioning frame 15. A positioning block 22 is provided on the lower surface of the snap-fit ​​base body 21. The positioning block 22 extends into the interior of the positioning frame 15, and the side wall of the positioning block 22 contacts the side wall inside the positioning frame 15. Two snap-fit ​​crossbars 23 are provided on the lower surface of the snap-fit ​​base body 21. The two snap-fit ​​crossbars 23 are located on both sides of the positioning block 22. The snap-fit ​​component includes two elastic tube clamps 3, which snap-fit ​​with the snap-fit ​​crossbars 23. Based on the above, the fixed seat 1 and the snap-fit ​​seat 2 cooperate with each other through the elastic tube clamp 3 and the snap-fit ​​crossbar 23 to achieve the snap-fit ​​effect. The positioning frame 15 and the positioning block 22 cooperate with each other to limit the snap-fit ​​seat 2, preventing it from moving in the horizontal direction. Under the snap-fit ​​effect, the snap-fit ​​seat 2 and the fixed seat 1 can be connected to each other to increase the stability of the installation between the two. When this tooling structure is in use, it is restricted in both the horizontal and downward directions due to the characteristics of milling machine operation. Therefore, when the workpiece is milled, the position of the workpiece is fixed. Since the upward force applied to the workpiece during the milling operation is almost negligible, the interlocking method of the fixed seat 1 and the locking seat 2 can meet the needs of milling machine operation.

[0022] The tooling structure installation process in this embodiment is as follows: Installation of fixed base 1: Slide the dovetail block 12 of the fixed base body 11 into the preset position along the dovetail groove of the worktable, and screw in the fastening screw through the threaded through hole 13 until the dovetail block 12 fits tightly with the dovetail groove of the worktable, and the horizontal error of the fixed base body 11 is ≤0.02mm / m. Clip assembly: Insert two elastic pipe clips 3 (material 65Mn, opening size 8mm) into the two sets of mounting slots 14 of the fixing body 11 respectively. The bottom of the elastic pipe clip 3 is in contact with the bottom surface of the mounting slot 14, ensuring that its axis is parallel to the symmetry line of the positioning frame 15. Installing the snap-fit ​​connector 2: Align the positioning block 22 on the lower surface of the snap-fit ​​connector body 21 with the positioning frame 15 of the fixed seat 1, and press the snap-fit ​​connector 2 vertically downwards so that the positioning block 22 is fully inserted into the positioning frame 15 (the bottom of the positioning block 22 is in contact with the bottom of the positioning frame 15). At the same time, the snap-fit ​​crossbar 23 (10mm in diameter) of the snap-fit ​​connector 2 is pressed into the elastic tube clamp 3. After the opening of the elastic tube clamp 3 expands elastically, it returns to its original position and holds the snap-fit ​​crossbar 23 tightly to complete the snap-fit. Replacement procedure: Pull the snap-fit ​​seat 2 upwards. The snap-fit ​​crossbar 23 overcomes the clamping force (about 30N) of the elastic tube clamp 3, causing the opening of the elastic tube clamp 3 to expand. The snap-fit ​​crossbar 23 then disengages from the elastic tube clamp 3. At this time, the positioning block 22 is pulled out from the positioning frame 15, completing the disassembly of the snap-fit ​​seat 2. After replacing the snap-fit ​​seat 2, repeat step 3.

[0023] Example 2 Another embodiment of the snap-fit ​​connector, such as Figures 8-11 As shown, the fixing base 1 further includes two opening slots 16, which are respectively disposed on the two side walls inside the positioning frame 15. The two sides outside the positioning frame 15 are provided with side threaded holes 18, which are connected to the opening slots 16. A partition plate 17 is disposed inside the opening slots 16, which divides the interior of the opening slots 16 into a first space and a second space. The two second spaces are located between the two first spaces, and the first spaces are located between the partition plate 17 and the side threaded holes 18. The two second spaces are open on opposite sides. like Figure 12 As shown, the card holder 2 also includes at least two card slots 24, which are respectively disposed on both sides of the positioning block 22 and are symmetrically distributed. like Figure 13 As shown, the snap-fit ​​component includes two elastic snap-fit ​​pieces 4, each elastic snap-fit ​​piece 4 including a snap-fit ​​piece body 41. The snap-fit ​​piece body 41 is an n-shaped elastic element. The two snap-fit ​​pieces 41 have a snap-fit ​​section on opposite sides and a positioning section on opposite sides. The positioning section is located inside the first space, and the snap-fit ​​section is located inside the second space. The positioning section surface of the snap-fit ​​piece body 41 is provided with a positioning side hole 42, which corresponds to the side threaded hole 18. The side of the positioning frame 15 is provided with a positioning screw that is threadedly connected to the side threaded hole 18, and the positioning screw extends into the interior of the positioning side hole 42. Each of the two snap-fit ​​sections is provided with a snap-fit ​​surface 43 on one side. The snap-fit ​​surface 43 snaps into the interior of the snap-fit ​​groove 24. There is an inclined angle between the contact surface between the snap-fit ​​surface 43 and the upper and lower side walls of the snap-fit ​​groove 24. When the snap-fit ​​surface 43 and the snap-fit ​​groove 24 are pressed against each other, the snap-fit ​​surface 43 is subjected to a pressing force that moves towards the snap-fit ​​piece body 41. Based on the above, by adjusting the structure of the fixing seat 1 and the snap-fit ​​seat 2, the fixing seat 1 and the snap-fit ​​seat 2 can be snapped together by the elastic snap-fit ​​piece 4, so that the fixing seat 1 and the snap-fit ​​seat 2 can be snapped together. After snapping together, the snap-fit ​​seat 2 can be separated from the fixing seat 1 by pulling it upward. The reverse operation can be used for installation, thus realizing the convenient and quick replacement of the snap-fit ​​seat 2.

[0024] The tooling structure installation process in this embodiment is as follows: Installation of fixed base 1: Same as in embodiment 1. After the fixed base 1 is fixed to the workbench, a positioning screw (M8×20) is pre-screwed into the side threaded hole 18 (M8) of the positioning frame 15, with a 5mm gap left at the end of the screw. Snap-fit ​​assembly: Insert the positioning sections of the two elastic snap-fit ​​pieces 4 ("n" type, material 65Mn, thickness 2mm) into the first space of the opening slot 16, and place the snap-fit ​​sections in the second space; adjust the position of the elastic snap-fit ​​pieces 4 so that the positioning side hole 42 of the positioning section is aligned with the side threaded hole 18, tighten the positioning screw until the end of the screw presses against the inner wall of the positioning side hole 42, and fix the elastic snap-fit ​​pieces 4 (the snap-fit ​​sections can elastically deform in the second space). Installing the snap-fit ​​base 2: Align the positioning block 22 of the snap-fit ​​base 2 with the positioning frame 15 and press it vertically downwards; the snap-fit ​​grooves 24 (tilt angle 30°) on both sides of the positioning block 22 contact the snap-fit ​​surface 43 (tilt angle 30°) of the elastic snap-fit ​​piece 4, and the snap-fit ​​section is squeezed outwards and elastically deformed (deformation displacement 0.8mm); when the positioning block 22 is fully inserted into the positioning frame 15, the snap-fit ​​surface 43 is snapped into the snap-fit ​​groove 24 under the action of elastic restoring force, and the snap-fit ​​surface 43 is tightly fitted with the upper and lower side walls of the snap-fit ​​groove 24, thus completing the snap-fit; Replacement operation: Pull the snap-fit ​​seat 2 upwards, the inclined surface of the snap-fit ​​groove 24 pushes the snap-fit ​​section outwards, and the snap-fit ​​surface 43 disengages from the snap-fit ​​groove 24; the positioning block 22 is pulled out from the positioning frame 15, completing the disassembly. After replacing the new snap-fit ​​seat 2, repeat step 3.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A quick-change tooling structure, characterized in that, include: The fixture (1), the snap-fit ​​seat (2), and the fixing clamp (5) are provided. The fixing clamp (5) is set on the snap-fit ​​seat (2), and the snap-fit ​​seat (2) is snapped onto the fixture (1) by snap-fit ​​parts. The fixed seat (1) includes a fixed seat body (11), a dovetail block (12) is provided on the lower surface of the fixed seat body (11), the dovetail block (12) extends into the dovetail groove of the workbench, and a positioning frame (15) is provided on the upper surface of the fixed seat body (11). The card holder (2) includes a card holder body (21), which is located above the positioning frame (15). A positioning block (22) is provided on the lower surface of the card holder body (21). The positioning block (22) extends into the interior of the positioning frame (15), and the sidewall of the positioning block (22) contacts the sidewall inside the positioning frame (15).

2. The quick-change tooling structure according to claim 1, characterized in that: The upper surface of the fixed base body (11) is provided with a threaded through hole (13) that penetrates the dovetail block (12), and a fastening screw that is threaded to the workbench is threaded in the threaded through hole (13).

3. The quick-change tooling structure according to claim 2, characterized in that, The upper surface of the fixed base body (11) is provided with two sets of mounting slots (14), the two sets of mounting slots (14) are symmetrically distributed, the positioning frame (15) is located between the two sets of mounting slots (14), and the snap-fit ​​is provided at the mounting slot (14).

4. The quick-change tooling structure according to claim 3, characterized in that, The lower surface of the snap-fit ​​body (21) is provided with two snap-fit ​​crossbars (23), the two snap-fit ​​crossbars (23) are respectively located on both sides of the positioning block (22), and the snap-fit ​​component includes two elastic tube clamps (3), the elastic tube clamps (3) and the snap-fit ​​crossbars (23) are snapped together.

5. The quick-change tooling structure according to claim 2, characterized in that, The fixing base (1) also includes two opening slots (16), which are respectively disposed on the two side walls inside the positioning frame (15). The two sides outside the positioning frame (15) are provided with side threaded holes (18), which are connected to the opening slots (16).

6. The quick-change tooling structure according to claim 5, characterized in that, The opening groove (16) is provided with a partition plate (17) inside, which divides the interior of the opening groove (16) into a first space and a second space. The two second spaces are located between the two first spaces. The first space is located between the partition plate (17) and the side threaded hole (18). The two second spaces are open on opposite sides.

7. The quick-change tooling structure according to claim 6, characterized in that, The card holder (2) also includes at least two card slots (24), which are respectively disposed on both sides of the positioning block (22) and are symmetrically distributed.

8. The quick-change tooling structure according to claim 7, characterized in that, The snap-fit ​​component includes two elastic snap-fit ​​pieces (4), each elastic snap-fit ​​piece (4) includes a snap-fit ​​piece body (41), the two snap-fit ​​pieces (41) have a snap-fit ​​section on one side opposite to each other, and a positioning section on the opposite side of the two snap-fit ​​pieces (41). The positioning section is located inside the first space, and the snap-fit ​​section is located inside the second space. The positioning section surface of the snap-fit ​​piece body (41) is provided with a positioning side hole (42), which corresponds to the side threaded hole (18). The side of the positioning frame (15) is provided with a positioning screw that is threadedly connected to the side threaded hole (18), and the positioning screw extends into the interior of the positioning side hole (42).

9. The quick-change tooling structure according to claim 8, characterized in that, Each of the two snap-fit ​​sections has a snap-fit ​​surface (43) on one side opposite to the snap-fit ​​groove (24). The snap-fit ​​surface (43) snaps into the interior of the snap-fit ​​groove (24). The contact surface between the snap-fit ​​surface (43) and the upper and lower side walls of the snap-fit ​​groove (24) has an inclined angle. When the snap-fit ​​surface (43) and the snap-fit ​​groove (24) are pressed against each other, the snap-fit ​​surface (43) is subjected to a pressing force that moves towards the snap-fit ​​body (41).

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