A positioning fixture for a precision engraving machine

Abstract

This utility model relates to the field of engraving machine technology, and in particular to a positioning fixture for an engraving machine. Its technical solution includes: a support frame, two fixed plates fixedly installed on the inner side of the support frame, a track frame fixedly connected between the two fixed plates, a first bidirectional screw rotatably installed on the inner side of the track frame, a second bidirectional screw rotatably connected to the inner side of the track frame below the first bidirectional screw, two first sliders and two second sliders slidably connected on the inner side of the track frame, and a movable rod slidably installed between the two fixed plates on the front and rear sides of the track frame. This utility model, through the interaction of the clamping frame, movable rod, first detection rod, second detection rod, and first sliders, facilitates the positioning and clamping of the workpiece, avoids scratching the outer side of the workpiece by the clamping frame, and allows for the detection of the workpiece's dimensions while positioning and clamping it.

Description

Technical Field

[0001] This utility model relates to the field of engraving machine technology, specifically a positioning fixture for an engraving machine. Background Technology

[0002] The CNC engraving machine is a type of CNC machine tool that combines engraving and milling functions. With high precision, high efficiency and high flexibility as its core advantages, it is widely used in mold processing, 3C electronic products, arts and crafts gifts and other fields. When using the CNC engraving machine to precisely process workpieces, it is necessary to clamp and fix the workpieces to be processed, which requires the use of positioning fixtures for the CNC engraving machine.

[0003] The existing technology has the following problems:

[0004] Traditional clamps are not convenient for positioning workpieces when clamping and fixing them. They are also prone to scratching the workpieces and are not convenient for automatically detecting the dimensions of the workpieces during clamping. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for a precision engraving machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for a precision engraving machine, comprising a support frame, two fixed plates fixedly mounted on the inner side of the support frame, a track frame fixedly connected between the two fixed plates, a first bidirectional screw rotatably mounted on the inner side of the track frame, a second bidirectional screw rotatably connected to the inner side of the track frame below the first bidirectional screw, two first sliders and two second sliders slidably connected on the inner side of the track frame, and movable rods slidably mounted between the two fixed plates on the front and rear sides of the track frame, with each second slider movable between the two movable rods. A support rod is installed, and a clamping frame is fixedly connected to the top of each second slider. Multiple clamping frames are fixedly installed on the top of each movable rod, and the multiple clamping frames extend out of the top of the support frame. A first detection rod is fixedly installed on the front side of the track frame. A first induction coil is fixedly connected to the front side of each first slider, and the two first induction coils are located around the first detection rod. A second detection rod is fixedly installed on the inner side of the support frame below the track frame. A second induction coil is fixedly connected to the bottom of each movable rod, and the two second induction coils are located around the second detection rod.

[0007] Preferably, the top of the support frame is provided with multiple sliding grooves, and each clamping frame extends out of the top of the support frame through one sliding groove.

[0008] Preferably, each of the clamping frames has two support wheels rotatably mounted on its inner side, and the plurality of support wheels extend out of the inner side of the plurality of clamping frames respectively.

[0009] Preferably, motors are fixedly installed on the outer sides of both fixing plates, and the output ends of the two motors are fixedly connected to the shafts of the first bidirectional screw and the second bidirectional screw, respectively.

[0010] Preferably, a first displacement sensor is fixedly installed at one end of the first detection rod, and a second displacement sensor is fixedly connected to one end of the second detection rod.

[0011] Preferably, a support column is fixedly installed at the bottom of each clamping frame, and each clamping frame is fixedly connected to the first slider and the movable rod through a support column.

[0012] Preferably, the two first sliders are located on the periphery of the first bidirectional screw and are threadedly connected to the first bidirectional screw, and the two second sliders are located on the periphery of the second bidirectional screw and are threadedly connected to the second bidirectional screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By employing a clamping frame, movable rods, a first detection rod, a second detection rod, and a first slider in coordination, the workpiece is placed on top of the support frame, positioned between multiple clamping frames. Moving two movable rods together simultaneously moves two first sliders, causing the multiple clamping frames to move together and push the workpiece to the center position at the top of the support frame. This facilitates workpiece positioning and clamping. Support wheels are rotatably mounted on the inner side of the clamping frame, providing rolling support for the workpiece and preventing scratches on the outer side of the workpiece. When the first slider moves in a closing motion, it can drive the first induction coil to move along the periphery of the first detection rod. The position of the two first induction coils is detected by the first detection rod, and the position of the two first sliders is detected simultaneously, which facilitates the detection of the workpiece length. When the two movable rods move in a closing motion, they can drive the two second induction coils to move along the periphery of the second detection rod. The position of the two second induction coils is detected by the second detection rod, and the position of the two movable rods is detected simultaneously, which facilitates the detection of the workpiece width. The workpiece can be positioned and clamped while its dimensions are being detected. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a top view sectional structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional view of the track frame structure of this utility model;

[0019] Figure 5 This is a top view schematic diagram of the second bidirectional screw structure of this utility model.

[0020] In the diagram: 1. Support frame; 2. Slide groove; 3. Clamping frame; 4. Support wheel; 5. Fixing plate; 6. Track frame; 7. Motor; 8. Movable rod; 9. First detection rod; 10. First displacement sensor; 11. First induction coil; 12. Second detection rod; 13. Second displacement sensor; 14. Second induction coil; 15. Support rod; 16. Support column; 17. First bidirectional screw; 18. Second bidirectional screw; 19. First slider; 20. Second slider. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] This utility model provides, for example Figure 1-5 The positioning fixture for a CNC engraving machine shown includes a support frame 1. Two fixed plates 5 are fixedly mounted on the inner side of the support frame 1. A track frame 6 is fixedly connected between the two fixed plates 5. A first bidirectional screw 17 is rotatably mounted on the inner side of the track frame 6. A second bidirectional screw 18 is rotatably connected to the inner side of the track frame 6 below the first bidirectional screw 17. Two first sliders 19 and two second sliders 20 are slidably connected on the inner side of the track frame 6. Movable rods 8 are slidably mounted between the two fixed plates 5 on the front and rear sides of the track frame 6. A support rod 15 is movably mounted between each second slider 20 and the two movable rods 8. A clamping frame 3 is fixedly connected to the top of each second slider 20. Multiple clamping frames 3 are fixedly installed on the top of each movable rod 8. The multiple clamping frames 3 extend out of the top of the support frame 1. A first detection rod 9 is fixedly installed on the front side of the track frame 6. A first sensing coil 11 is fixedly connected to the front side of each first slider 19. Both first sensing coils 11 are located around the first detection rod 9. A second detection rod 12 is fixedly installed on the inner side of the support frame 1 below the track frame 6. A second sensing coil 14 is fixedly connected to the bottom of each movable rod 8. Both second sensing coils 14 are located around the second detection rod 12.

[0023] The top of the support frame 1 is provided with multiple sliding grooves 2, and each clamping frame 3 extends out of the top of the support frame 1 through a sliding groove 2;

[0024] Two support wheels 4 are rotatably mounted on the inner side of each clamping frame 3, and multiple support wheels 4 extend out of the inner side of multiple clamping frames 3 respectively;

[0025] Motors 7 are fixedly installed on the outer sides of the two fixed plates 5, and the output ends of the two motors 7 are fixedly connected to the shafts of the first bidirectional screw 17 and the second bidirectional screw 18, respectively.

[0026] A first displacement sensor 10 is fixedly installed at one end of the first detection rod 9, and a second displacement sensor 13 is fixedly connected to one end of the second detection rod 12.

[0027] Each clamping frame 3 has a support column 16 fixedly installed at its bottom, and each clamping frame 3 is fixedly connected to the first slider 19 and the movable rod 8 through a support column 16.

[0028] Two first sliders 19 are located on the periphery of the first bidirectional screw 17 and are threadedly connected to the first bidirectional screw 17, and two second sliders 20 are located on the periphery of the second bidirectional screw 18 and are threadedly connected to the second bidirectional screw 18.

[0029] The working principle of the positioning fixture for the engraving machine based on the embodiment is as follows: by placing the workpiece on the top of the support frame 1, the workpiece is positioned between multiple clamping frames 3. By starting two motors 7, the first bidirectional screw 17 and the second bidirectional screw 18 can be rotated. Through the threaded connection between the first slider 19 and the first bidirectional screw 17, the first bidirectional screw 17 can drive the two first sliders 19 to move together or apart when rotating in different directions.

[0030] The threaded connection between the second slider 20 and the second bidirectional screw 18 allows the second bidirectional screw 18 to rotate in different directions, causing the two second sliders 20 to move together or apart. This allows the second sliders 20 to move one end of the support rod 15 together or apart, and the other end of the support rod 15 to move the two movable rods 8 together or apart.

[0031] The clamping frame 3 is supported and fixed by the support column 16, so that the first slider 19 and the movable rod 8 can move the clamping frame 3 synchronously when moving. The slide groove 2 facilitates the closing or separating of multiple clamping frames 3. By driving multiple clamping frames 3 to close, the clamping frame 3 pushes the workpiece to the center position of the top of the support frame 1, which is convenient for positioning and clamping the workpiece. The support wheel 4 is rotatably installed on the inner side of the clamping frame 3. The support wheel 4 provides rolling support for the workpiece, which can prevent the clamping frame 3 from scratching the outer side of the workpiece.

[0032] When the two first sliders 19 move together, they can drive the first induction coil 11 to move along the periphery of the first detection rod 9. The first displacement sensor 10 can enable the first detection rod 9 to detect the position of the two first induction coils 11 and simultaneously detect the position of the two first sliders 19, which facilitates the detection of the length of the workpiece.

[0033] When the two movable rods 8 move together, they can drive the two second induction coils 14 to move along the periphery of the second detection rod 12. The second displacement sensor 13 can enable the second detection rod 12 to detect the position of the two second induction coils 14 and simultaneously detect the position of the two movable rods 8, which facilitates the detection of the workpiece width. While positioning and clamping the workpiece, the size of the workpiece can also be detected.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A positioning fixture for a fine carving machine, comprising a support frame (1), characterized in that: Two fixed plates (5) are fixedly installed on the inner side of the support frame (1). A track frame (6) is fixedly connected between the two fixed plates (5). A first bidirectional screw (17) is rotatably installed on the inner side of the track frame (6). A second bidirectional screw (18) is rotatably connected on the inner side of the track frame (6) below the first bidirectional screw (17). Two first sliders (19) and two second sliders (20) are slidably connected on the inner side of the track frame (6). A movable rod (8) is slidably installed between the two fixed plates (5) on the front and rear sides of the track frame (6). A support rod (15) is movably installed between each second slider (20) and the two movable rods (8). A clamping frame (3) is fixedly connected to the top of each second slider (20). Multiple clamping frames (3) are fixedly installed on the top of each movable rod (8). Multiple clamping frames (3) extend out of the top of the support frame (1). A first detection rod (9) is fixedly installed on the front side of the track frame (6). A first induction coil (11) is fixedly connected to the front side of each first slider (19). Both first induction coils (11) are located around the first detection rod (9). A second detection rod (12) is fixedly installed on the inner side of the support frame (1) below the track frame (6). A second induction coil (14) is fixedly connected to the bottom of each movable rod (8). Both second induction coils (14) are located around the second detection rod (12).

2. The positioning fixture for a precision engraving machine according to claim 1, characterized in that: The top of the support frame (1) is provided with multiple sliding grooves (2), and each clamping frame (3) extends out of the top of the support frame (1) through a sliding groove (2).

3. A positioning fixture for a precision engraving machine according to claim 1, characterized in that: Two support wheels (4) are rotatably mounted on the inner side of each of the clamping frames (3), and the multiple support wheels (4) extend out of the inner side of the multiple clamping frames (3).

4. A positioning fixture for a precision engraving machine according to claim 1, characterized in that: Motors (7) are fixedly installed on the outer sides of the two fixed plates (5), and the output ends of the two motors (7) are fixedly connected to the shafts of the first bidirectional screw (17) and the second bidirectional screw (18), respectively.

5. A positioning fixture for a precision engraving machine according to claim 1, characterized in that: A first displacement sensor (10) is fixedly installed at one end of the first detection rod (9), and a second displacement sensor (13) is fixedly connected at one end of the second detection rod (12).

6. A positioning fixture for a precision engraving machine according to claim 1, characterized in that: Each of the clamping frames (3) has a support column (16) fixedly installed at its bottom, and each of the clamping frames (3) is fixedly connected to the first slider (19) and the movable rod (8) through a support column (16).

7. A positioning fixture for a precision engraving machine according to claim 1, characterized in that: The two first sliders (19) are located on the periphery of the first bidirectional screw (17) and are threadedly connected to the first bidirectional screw (17), and the two second sliders (20) are located on the periphery of the second bidirectional screw (18) and are threadedly connected to the second bidirectional screw (18).

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