Precision positioning mechanism for sheet metal machining of numerical control machine tool

Abstract

The utility model discloses a precision positioning mechanism for sheet metal working of a numerical control machine tool, which relates to the technical field of sheet metal working and comprises a machining table, two first rectangular frames are symmetrically and fixedly mounted on two sides of the upper surface of the machining table, and longitudinal driving units are mounted in the first rectangular frames in a penetrating manner. The movable end of the longitudinal driving unit is fixedly connected with side plates, a transverse driving unit is installed between the two side plates in a penetrating mode, and an up-down driving unit is fixedly installed at the movable end of the transverse driving unit. Whether the movable ends of the side plate and the transverse driving unit move or not can be monitored through the arranged first detection mechanism during sheet metal machining, so that the practicability is improved, the sheet metal workpiece can be accurately positioned through the arranged second detection mechanism and third detection mechanism, and the work efficiency is improved. And in addition, whether the cutter and the sheet metal workpiece deviate or not can be monitored during machining, and therefore maintenance can be conducted in time.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal processing, in particular to a precision positioning mechanism for sheet metal processing of a numerically controlled machine tool. Background Art

[0002] Sheet metal processing is a key technology that sheet metal technicians need to master, and it is also an important process for forming sheet metal products. When performing sheet metal processing of plates, most of them rely on CNC machine tools for processing. After searching, the Chinese patent publication number CN219293317U discloses a precision positioning mechanism for sheet metal processing of CNC machine tools, including a front and rear movable frame, one side of the front and rear movable frame is connected to a transverse drive unit, the side of the front and rear movable frames close to each other is fixedly provided with a crossbeam, one side of the crossbeam is slidably provided with a mounting frame, and one end of the transverse drive unit is connected to the mounting frame. The utility model performs comprehensive positioning detection on the processing point, ensures the positioning accuracy of the workpiece, effectively meets the processing positioning effect, and improves the positioning efficiency of the equipment.

[0003] Although the above technical solution can perform comprehensive positioning detection on the processing point and ensure the positioning accuracy of the workpiece, it can only determine the left and right and up and down positions of the workpiece when in use, but cannot determine the front and back positions, and cannot detect when the sheet metal deviates forward and backward, thereby reducing practicality, and the second distance measuring sensor can only monitor the movement value of the sliding block, and cannot monitor the movement value of the entire rack, thereby further reducing practicality. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a precision positioning mechanism for sheet metal processing of a CNC machine tool, which solves the existing problems raised in the background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a precision positioning mechanism for sheet metal processing of CNC machine tools, comprising a processing table, two first rectangular frames are symmetrically fixedly installed on both sides of the upper surface of the processing table, a longitudinal drive unit is installed through the interior of the first rectangular frame, the movable end of the longitudinal drive unit is fixedly connected to a side plate, a transverse drive unit is installed through the two side plates, an upper and lower drive unit is fixedly installed on the movable end of the transverse drive unit, a sheet metal processing motor is installed on the outer surface of the movable end of the upper and lower drive units, the output shaft of the sheet metal processing motor is fixedly connected to a tool holder, a corresponding first detection mechanism is installed between the first rectangular frame and the outer surface of the side plate, a second detection mechanism corresponding to the tool holder is fixedly installed on one side of the outer surface of the side plate, and a third detection mechanism for detecting sheet metal workpieces is fixedly installed on the upper surface of the processing table.

[0006] The first detection mechanism includes a mounting plate fixedly mounted on one end of the first rectangular frame, and a first ranging sensor is fixedly mounted on one side of the outer surface of the mounting plate. The first ranging sensor corresponds to the side plate and can monitor the position of the side plate during sheet metal processing.

[0007] Preferably, the first detection mechanism also includes a second ranging sensor, which is fixedly mounted on one side of the top end of the side plate, and corresponds to the active end of the lateral drive unit, and can perform positioning and monitoring on the active end of the lateral drive unit during sheet metal processing.

[0008] Preferably, the second detection mechanism includes a second rectangular frame fixedly mounted on one side of the outer surface of the side panel, a first motor is fixedly mounted on the top of the second rectangular frame, an output shaft of the first motor is fixedly connected to a first screw rod rotatably connected to the second rectangular frame, an outer surface of the first screw rod is threadedly connected to a first slider slidably connected to an inner wall of the second rectangular frame, a third ranging sensor is fixedly mounted on one side of the outer surface of the first slider, and the third ranging sensor corresponds to the tool holder, so as to monitor the position of the tool holder.

[0009] Preferably, the third detection mechanism includes two electric push rods fixedly mounted on the upper surface of the processing table, the movable ends of the two electric push rods are fixedly connected to a third rectangular frame, a second motor is fixedly mounted on the top of the third rectangular frame, the output shaft of the second motor is fixedly connected to a second screw rod rotatably connected to the third rectangular frame, the outer surface of the second screw rod is threadedly connected to a second slider slidably connected to the inner wall of the third rectangular frame, a fourth ranging sensor is fixedly mounted on one side of the outer surface of the second slider, and the fourth ranging sensor corresponds to the sheet metal workpiece, so as to monitor the position of the sheet metal workpiece.

[0010] Preferably, the two electric push rods are arranged perpendicular to each other, and the third rectangular frame is slidably connected to the upper surface of the processing table, so as to facilitate monitoring of the horizontal and vertical positions of the sheet metal.

[0011] Preferably, a cutting tool is embedded and fixedly installed inside the tool holder to facilitate processing of sheet metal.

[0012] The utility model provides a precision positioning mechanism for sheet metal processing of CNC machine tools. It has the following beneficial effects:

[0013] 1. This kind of precision positioning mechanism for sheet metal processing of CNC machine tools can monitor the positions of the movable ends of the side plates and the transverse drive unit respectively through the first detection mechanism, so as to monitor the values ​​of the front-back and left-right movement of the sheet metal processing motor, thereby ensuring the accuracy of the sheet metal workpiece during processing, and can also monitor whether the movable ends of the side plates and the transverse drive unit move when the sheet metal workpiece is being processed, thereby improving practicality, thereby solving the problem that the existing positioning mechanism can only monitor the value of the movement of the sliding block, and cannot monitor the movement value of the entire frame, thereby reducing practicality.

[0014] 2. This precision positioning mechanism for sheet metal processing of CNC machine tools can not only accurately locate the position of the sheet metal workpiece through the second detection mechanism and the third detection mechanism, but also monitor whether the tool and the sheet metal workpiece are offset during processing, so that maintenance can be carried out in time, thereby solving the problem that the existing positioning mechanism can only locate the workpiece but cannot monitor whether the sheet metal workpiece and the tool are offset during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the second detection mechanism of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the third detection mechanism of the utility model.

[0018] In the figure, 1, processing table; 2, first rectangular frame; 3, longitudinal drive unit; 4, side plate; 5, transverse drive unit; 6, up and down drive unit; 7, sheet metal processing motor; 8, tool holder; 9, first detection mechanism; 91, mounting plate; 92, second distance measuring sensor; 10, second detection mechanism; 101, second rectangular frame; 102, first motor; 103, first screw rod; 104, first slider; 105, third distance measuring sensor; 11, third detection mechanism; 111, electric push rod; 112, third rectangular frame; 113, second motor; 114, second screw rod; 115, second slider; 116, fourth distance measuring sensor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] like Figure 1 and Figure 2 As shown, a precision positioning mechanism for sheet metal processing of a numerically controlled machine tool comprises a processing table 1, two first rectangular frames 2 are symmetrically fixedly installed on both sides of the upper surface of the processing table 1, a longitudinal drive unit 3 is installed inside the first rectangular frame 2, the movable end of the longitudinal drive unit 3 is fixedly connected to a side plate 4, a transverse drive unit 5 is installed between the two side plates 4, an upper and lower drive unit 6 is fixedly installed on the movable end of the transverse drive unit 5, a sheet metal processing motor 7 is installed on the outer surface of the movable end of the upper and lower drive unit 6, the output shaft of the sheet metal processing motor 7 is fixedly connected to a tool holder 8, and a tool is embedded and fixedly installed inside the tool holder 8. The longitudinal drive unit 3, the transverse drive unit 5 and the upper and lower drive unit 6 are arranged to facilitate the tool to move forward and backward, left and right, and up and down, so as to facilitate the processing of sheet metal workpieces at different positions, and the structure of each drive unit is the same as the drive unit structure in a precision positioning mechanism for sheet metal processing of a numerically controlled machine tool with the publication number CN219293317U, which belongs to the prior art, so it is not described in detail.

[0022] Embodiment 2:

[0023] A corresponding first detection mechanism 9 is installed between the outer surface of the first rectangular frame 2 and the side plate 4. The first detection mechanism 9 includes a mounting plate 91 fixedly mounted at one end of the first rectangular frame 2. A first distance sensor is fixedly mounted on one side of the outer surface of the mounting plate 91. The first distance sensor corresponds to the side plate 4. The first detection mechanism 9 also includes a second distance sensor 92. The second distance sensor 92 is fixedly mounted on one side of the top end of the side plate 4, and the second distance sensor 92 corresponds to the active end of the transverse drive unit 5. The first distance sensor can monitor the position of the side plate 4, while the second distance sensor 92 can monitor the position of the active end of the transverse drive unit 5, so as to monitor the values ​​of the front-back and left-right movement of the sheet metal processing motor 7, ensure the accuracy of the sheet metal workpiece during processing, and monitor whether the active ends of the side plate 4 and the transverse drive unit 5 move during sheet metal workpiece processing, thereby improving practicality, thereby solving the problem that the existing positioning mechanism can only monitor the left-right position, but cannot monitor the front-back position, thereby reducing practicality.

[0024] Embodiment 3:

[0025] A second detection mechanism 10 corresponding to the tool holder 8 is fixedly installed on one side of the outer surface of the side plate 4. The second detection mechanism 10 includes a second rectangular frame 101 fixedly installed on one side of the outer surface of the side plate 4. A first motor 102 is fixedly installed on the top of the second rectangular frame 101. The output shaft of the first motor 102 is fixedly connected to a first screw rod 103 rotatably connected to the second rectangular frame 101. The outer surface of the first screw rod 103 is threadedly connected to a first slider 104 slidably connected to the inner wall of the second rectangular frame 101. A third distance measuring sensor 105 is fixedly installed on one side of the outer surface of the first slider 104, and the third distance measuring sensor 105 corresponds to the tool holder 8. The rotation of the first motor 102 drives the first screw rod 103 to rotate, and drives the first slider 104 and the third distance measuring sensor 105 to move up and down through the thread, so that the third distance measuring sensor 105 corresponds to the tool holder 8. When the tool holder 8 and the sheet metal processing motor 7 are offset during sheet metal workpiece processing, maintenance can be carried out in time.

[0026] A third detection mechanism 11 for detecting sheet metal workpieces is fixedly installed on the upper surface of the processing table 1. The third detection mechanism 11 includes two electric push rods 111 fixedly installed on the upper surface of the processing table 1. The movable ends of the two electric push rods 111 are fixedly connected to a third rectangular frame 112. A second motor 113 is fixedly installed on the top of the third rectangular frame 112. The output shaft of the second motor 113 is fixedly connected to a second screw rod 114 rotatably connected to the third rectangular frame 112. The outer surface of the second screw rod 114 is threadedly connected to a second slider 115 slidably connected to the inner wall of the third rectangular frame 112. A fourth distance measuring sensor 116 is fixedly installed on one side of the outer surface of the second slider 115, and the fourth distance measuring sensor 116 corresponds to the sheet metal workpiece. The two electric push rods 111 are arranged perpendicular to each other, and the third rectangular frame 112 is slidably connected to the upper surface of the processing table 1. The operation of the electric push rods 111 drives the fourth distance measuring sensor 116 to move horizontally, and the operation of the second motor 113 can drive the fourth distance measuring sensor 116 to move up and down, so that both sides of the sheet metal workpiece can be monitored, and whether the sheet metal workpiece is offset during processing can be monitored, so that maintenance can be carried out in time, thereby solving the problem that the existing positioning mechanism can only position the workpiece but cannot monitor whether the sheet metal workpiece and the tool are offset during processing.

[0027] Working principle: When in use, the sheet metal tool is fixed on the processing table 1 of the CNC machine tool through an external clamp, and then the corresponding longitudinal drive unit 3, transverse drive unit 5 and up and down drive unit 6 are started according to the processing position of the sheet metal workpiece. The longitudinal drive unit 3, transverse drive unit 5 and up and down drive unit 6 are set to facilitate the tool to move forward and backward, left and right, and up and down, so as to facilitate the processing of different positions of the sheet metal workpiece.

[0028] When the tool moves, the first ranging sensor can monitor the position of the side plate 4, and the second ranging sensor 92 can monitor the position of the active end of the transverse drive unit 5, so as to monitor the forward and backward and left and right movement values ​​of the sheet metal processing motor 7, thereby ensuring the accuracy of the sheet metal workpiece during processing, and also monitoring whether the side plate 4 and the active end of the transverse drive unit 5 move when the sheet metal workpiece is being processed, thereby improving practicality and solving the problem that the existing positioning mechanism can only monitor the left and right position but not the front and back position, thereby reducing practicality.

[0029] During processing, the first motor 102 rotates to drive the first screw rod 103 to rotate, and drives the first slider 104 and the third distance measuring sensor 105 to move up and down through the thread, so that the third distance measuring sensor 105 corresponds to the tool holder 8, and can monitor whether the tool holder 8 and the sheet metal processing motor 7 are offset during sheet metal workpiece processing, so that maintenance can be carried out in time. The operation of the electric push rod 111 drives the fourth distance measuring sensor 116 to move horizontally, and the operation of the second motor 113 can drive the fourth distance measuring sensor 116 to move up and down, so that both sides of the sheet metal workpiece can be monitored, and whether the sheet metal workpiece is offset during processing can be monitored, so that maintenance can be carried out in time, thereby solving the problem that the existing positioning mechanism can only position the workpiece but cannot monitor whether the sheet metal workpiece and the tool are offset during processing.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A precision positioning mechanism for sheet metal processing of a CNC machine tool, comprising a processing table (1), characterized in that: Two first rectangular frames (2) are symmetrically fixedly installed on both sides of the upper surface of the processing table (1); a longitudinal drive unit (3) is installed through the interior of the first rectangular frame (2); the movable end of the longitudinal drive unit (3) is fixedly connected to a side plate (4); a transverse drive unit (5) is installed between the two side plates (4); an upper and lower drive unit (6) is fixedly installed on the movable end of the transverse drive unit (5); a sheet metal processing motor (7) is installed on the outer surface of the movable end of the upper and lower drive unit (6); the output shaft of the sheet metal processing motor (7) is fixedly connected to a tool holder (8); a corresponding first detection mechanism (9) is installed between the first rectangular frame (2) and the outer surface of the side plate (4); a second detection mechanism (10) corresponding to the tool holder (8) is fixedly installed on one side of the outer surface of the side plate (4); and a third detection mechanism (11) for detecting sheet metal workpieces is fixedly installed on the upper surface of the processing table (1); The first detection mechanism (9) comprises a mounting plate (91) fixedly mounted on one end of the first rectangular frame (2), a first distance measuring sensor being fixedly mounted on one side of the outer surface of the mounting plate (91), and the first distance measuring sensor corresponding to the side plate (4).

2. According to claim 1, a precision positioning mechanism for sheet metal processing of CNC machine tools, characterized in that: The first detection mechanism (9) further comprises a second distance measuring sensor (92), the second distance measuring sensor (92) being fixedly mounted on one side of the top end of the side plate (4), and the second distance measuring sensor (92) corresponds to the active end of the lateral driving unit (5).

3. The precision positioning mechanism for sheet metal processing of CNC machine tools according to claim 1, characterized in that: The second detection mechanism (10) comprises a second rectangular frame (101) fixedly mounted on one side of the outer surface of the side plate (4); a first motor (102) is fixedly mounted on the top of the second rectangular frame (101); an output shaft of the first motor (102) is fixedly connected to a first screw rod (103) rotatably connected to the second rectangular frame (101); an outer surface of the first screw rod (103) is threadedly connected to a first slider (104) slidably connected to an inner wall of the second rectangular frame (101); a third distance measuring sensor (105) is fixedly mounted on one side of the outer surface of the first slider (104); and the third distance measuring sensor (105) corresponds to the knife seat (8).

4. The precision positioning mechanism for sheet metal processing of CNC machine tools according to claim 1, characterized in that: The third detection mechanism (11) comprises two electric push rods (111) fixedly mounted on the upper surface of the processing table (1); the movable ends of the two electric push rods (111) are fixedly connected to a third rectangular frame (112); a second motor (113) is fixedly mounted on the top of the third rectangular frame (112); an output shaft of the second motor (113) is fixedly connected to a second screw rod (114) rotatably connected to the third rectangular frame (112); a second slider (115) slidably connected to an inner wall of the third rectangular frame (112) is threadedly connected to an outer surface of the second screw rod (114); a fourth distance measuring sensor (116) is fixedly mounted on one side of an outer surface of the second slider (115); and the fourth distance measuring sensor (116) corresponds to the sheet metal workpiece.

5. The precision positioning mechanism for sheet metal processing of CNC machine tools according to claim 4, characterized in that: The two electric push rods (111) are arranged perpendicular to each other, and the third rectangular frame (112) is slidably connected to the upper surface of the processing table (1).

6. The precision positioning mechanism for sheet metal processing of CNC machine tools according to claim 1, characterized in that: A cutting tool is embedded and fixedly mounted inside the cutting tool holder (8).

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