Numerical control riveting machine

Abstract

The utility model relates to a numerical control riveting machine which comprises a machine table, a riveting mechanism, a workpiece positioning seat and a two-dimensional driving mechanism, a portal frame is fixed on the upper portion of the machine table, the riveting mechanism is installed on the portal frame, and the two-dimensional driving mechanism is installed on the machine table and used for driving the workpiece positioning seat to do plane movement on the horizontal plane. The upper end of the workpiece positioning seat is provided with a positioning structure for bearing the side plate and the positioning shaft, and the workpiece positioning seat is positioned below the riveting mechanism; the positioning structure comprises a side plate supporting face and a positioning shaft inserting hole, the positioning shaft inserting hole is formed in the vertical direction, a blocking table used for supporting the positioning shaft upwards is arranged in the positioning hole, and a pressing mechanism used for pressing the edge of the side plate is arranged on the side portion of the workpiece positioning base. The numerical control riveting machine is reasonable in structure, the side plate and the positioning shaft in the circuit breaker operating mechanism are riveted through the automatic riveting technology, the consistency and accuracy of the riveting process can be ensured, and therefore the overall production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to a numerical control riveting machine, belonging to the technical field of numerical control equipment. Background Art

[0002] The frame circuit breaker is an important protection device in the power system, especially widely used in the low-voltage power distribution system. Its main function is to protect the circuit and equipment from electrical faults such as overload, short circuit, and ground fault. In the modern power system, the spring operating mechanism of the frame circuit breaker plays a key role, and the closing and opening operations of the circuit breaker are realized through the energy of the spring. The operating mechanism usually consists of side plates and multiple positioning shafts (such as the opening spring hanging column, clamping plate support column, opening toggle arm limit pin, etc.), and one end of these positioning shafts is fixed on the side plate by riveting. However, in the production process of the traditional operating mechanism, the riveting between the side plate and the fixed shaft usually relies on manual operation, resulting in relatively low processing efficiency and processing accuracy. Summary of the Utility Model

[0003] In view of this, the utility model aims to provide a numerical control riveting machine, which can realize efficient and high-precision riveting operations and better adapt to the riveting processing of the operating mechanism of the frame circuit breaker.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The utility model provides a numerical control riveting machine, including a machine table, a riveting and pressing mechanism, a workpiece positioning seat, and a two-dimensional driving mechanism. A gantry is fixed on the upper part of the machine table, the riveting and pressing mechanism is installed on the gantry, the two-dimensional driving mechanism is installed on the machine table and is used to drive the workpiece positioning seat to make a planar movement on the horizontal plane. The upper end of the workpiece positioning seat has a positioning structure for carrying the side plate and the positioning shaft, and the workpiece positioning seat is located below the riveting and pressing mechanism. The positioning structure includes a side plate support surface provided on the upper surface of the workpiece positioning seat and a positioning shaft insertion hole provided on the side plate support surface. The positioning shaft insertion hole is arranged in the up-down direction, a retaining table for upwardly supporting the positioning shaft is arranged in the positioning shaft insertion hole, and a pressing mechanism for pressing the side edge of the side plate is arranged on the side of the workpiece positioning seat.

[0006] In some embodiments, a positioning pin protruding upward is provided on the side plate support surface, and the positioning pin is adapted to be inserted and matched with the positioning hole on the side plate. The top end of the positioning pin is a conical structure.

[0007] In some embodiments, the pressing mechanism includes a driving cylinder and a pressing plate that moves up and down under the drive of the driving cylinder. The driving cylinder is fixed on the workpiece positioning seat, and the downward movement of the pressing plate is adapted to press the side edge of the side plate against the side plate support surface.

[0008] In some embodiments, the middle part of the workpiece positioning seat has an inner cavity, the lower end of the positioning shaft insertion hole is communicated with the inner cavity, the positioning shaft insertion hole is a stepped hole that is thick at the top and thin at the bottom, and the step in the stepped hole serves as the retaining table; a push plate that can move up and down is arranged in the inner cavity, a push shaft inserted into the positioning shaft insertion hole is fixed on the upper surface of the push plate, a push plate cylinder is fixed at the bottom of the workpiece positioning seat, the cylinder rod of the push plate cylinder extends upward into the inner cavity and is fixedly connected with the push plate, and when the push plate is in the lowest position, the top end of the push shaft is not higher than the retaining table.

[0009] In some embodiments, the workpiece positioning seat includes an upper layer plate, a middle layer plate, a lower layer plate and a mounting frame that are stacked and fixed. The middle layer plate is a square frame structure, and its interior forms the inner cavity. The positioning shaft insertion hole is arranged on the upper layer plate. A cylinder rod through hole for the cylinder rod of the push plate cylinder to pass through is arranged on the lower layer plate. The lower layer plate is fixed at the upper end of the mounting frame, the mounting frame is fixed on the two-dimensional driving mechanism, the push plate cylinder is fixed in the mounting frame, and the pressing mechanism is fixed on the mounting frame.

[0010] In some embodiments, mounting blocks are installed at the peripheral side edges of the push plate. Movable rods that can move horizontally, springs sleeved on the movable rods, and rollers installed at the outer ends of the movable rods are installed on the mounting blocks. Transverse insertion holes are arranged on the mounting blocks, the movable rods pass through the transverse insertion holes, and the rollers abut against the side wall of the inner cavity under the elastic force of the springs.

[0011] In some embodiments, limit buckles are arranged on the movable rods, and the limit buckles cooperate with the mounting blocks to prevent the movable rods from detaching from the mounting blocks.

[0012] In some embodiments, an opening that penetrates radially is arranged at one end of the movable rod far from the roller. The limit buckle is a clamping platform arranged on the side wall of the movable rod and corresponding to the position of the opening, and the end of the clamping platform far from the roller is an inclined surface.

[0013] In some embodiments, the two-dimensional driving mechanism includes a first electric lead screw mechanism for driving the workpiece positioning seat to move in a first direction and a second electric lead screw mechanism for driving the first electric lead screw mechanism to move in a second direction. The first direction and the second direction are two directions perpendicular to each other in the horizontal plane.

[0014] The positive effects of the present utility model: In the present utility model, the structure of the numerical control riveting machine is optimized and designed. The side plate and the positioning shaft in the circuit breaker operating mechanism are riveted by adopting an automatic riveting technology to replace the traditional manual operation, which can ensure the consistency and accuracy of the riveting process, thereby improving the overall production efficiency and product quality.

[0015] When performing riveting operations using the numerical control riveting machine in this utility model, first insert the positioning shaft into the positioning shaft insertion hole. The upper end of the positioning shaft protrudes from the side plate support surface. Then, place the side plate flat on the side plate support surface (align the shaft hole on the side plate with the upper end of the positioning shaft and keep it inserted). Then, use the riveting head to perform riveting deformation on the upper end of the positioning shaft to rivet and fix it to the side plate; drive the workpiece positioning seat to move in the horizontal plane through the two-dimensional drive mechanism, so as to move the positioning shafts at different positions under the riveting head for riveting, which can ensure the processing efficiency and processing accuracy and has good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Front view of the numerical control riveting machine in this utility model;

[0018] Figure 2 is Figure 1 Left view of the numerical control riveting machine shown;

[0019] Figure 3 Cross-sectional view of the workpiece positioning seat in this utility model;

[0020] Figure 4 is Figure 3 Partial enlarged view of the position A in;

[0021] Figure 5 Structural schematic diagram after riveting the side plate and multiple positioning shafts.

[0022] Reference numerals shown in the drawings:

[0023] 1 - Machine table; 11 - Gantry;

[0024] 2 - Riveting mechanism; 21 - Riveting head;

[0025] 3 - Workpiece positioning seat; 30 - Inner cavity; 31 - Upper layer plate; 32 - Middle layer plate; 33 - Lower layer plate; 34 - Installation frame; 35 - Side plate support surface; 36 - Positioning shaft insertion hole; 37 - Stopping platform; 38 - Positioning pin;

[0026] 4 - Two-dimensional drive mechanism; 41 - First electric screw rod mechanism; 42 - Second electric screw rod mechanism;

[0027] 5 - Pressing mechanism; 51 - Driving cylinder; 52 - Pressing plate;

[0028] 6 - Pusher plate; 61 - Pushing shaft; 62 - Pusher plate cylinder; 63 - Cylinder rod;

[0029] 7 - Mounting block; 71 - Movable rod; 72 - Roller; 73 - Horizontal jack; 74 - Spring; 75 - Limit buckle; 76 - Opening.

[0030] 8 - Side plate; 9 - Positioning shaft. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In the present utility model, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0034] The structure of the numerical control riveting machine provided in the embodiments of the present utility model is as Figures 1 to 4As shown in the figure, it includes a machine platform 1, a riveting mechanism 2, a workpiece positioning seat 3, and a two-dimensional driving mechanism 4. A gantry 11 is fixed on the upper part of the machine platform 1. The riveting mechanism 2 is installed on the gantry 11. The two-dimensional driving mechanism 4 is installed on the machine platform 1 and is used to drive the workpiece positioning seat 3 to make a planar movement on the horizontal plane to adapt to the riveting of the positioning shaft 9 and the side plate 8 at different positions. The upper end of the workpiece positioning seat 3 has a positioning structure for carrying the side plate 8 and the positioning shaft 9. The workpiece positioning seat 3 is located below the riveting mechanism 2, and a riveting head 21 is provided at the lower end of the riveting mechanism 2. The positioning structure includes a side plate support surface 35 provided on the upper surface of the workpiece positioning seat 3 and a positioning shaft insertion hole 36 provided on the side plate support surface 35. The positioning shaft insertion hole 36 is arranged in the up-and-down direction. A retaining platform 37 for upwardly supporting the positioning shaft 9 is provided in the positioning shaft insertion hole 36. The depth of insertion of the positioning shaft 9 in the positioning shaft insertion hole 36 is limited by the retaining platform 37. A pressing mechanism 5 for pressing the edge of the side plate 8 is provided on the side of the workpiece positioning seat 3. The pressing mechanism 5 presses the side plate 8 to effectively position the side plate 8 and prevent it from being easily displaced and affecting the riveting accuracy. Positioning shafts 9 of different lengths and thicknesses can be positioned in corresponding positioning shaft insertion holes 36 with corresponding depths and diameters.

[0035] In this embodiment, an automated riveting technology is used to rivet the side plate and the positioning shaft in the circuit breaker operating mechanism to replace the traditional manual operation, which can ensure the consistency and accuracy of the riveting process, thereby improving the overall production efficiency and product quality. When using the above-mentioned numerical control riveting machine in this embodiment for riveting operation, first insert the positioning shaft 9 into the positioning shaft insertion hole 36, and the upper end of the positioning shaft 9 protrudes from the side plate support surface 35. Then place the side plate 8 flat on the side plate support surface 35 (align the shaft hole on the side plate 8 with the upper end of the positioning shaft 9 and keep it inserted). Then, the upper end of the positioning shaft 9 is riveted and deformed by the riveting head 21 to be riveted and fixed together with the side plate 8. The workpiece positioning seat 3 is driven by the two-dimensional driving mechanism 4 to move in the horizontal plane, so that the positioning shafts 9 at different positions are moved under the riveting head 21 for riveting. The solution in this embodiment is reasonably designed, can improve the processing efficiency and processing accuracy, and has good practicability.

[0036] Optionally, as Figure 1 and Figure 2 shown, a positioning pin 38 protruding upward is provided on the side plate support surface 35. The positioning pin 38 is adapted to be inserted and matched with the positioning hole on the side plate 8. The top end of the positioning pin 38 is a conical structure. When positioning the side plate 8 on the side plate support surface 35, place the side plate 8 flat on the side plate support surface 35, and the side plate 8 can be accurately positioned by the cooperation of the positioning hole and the positioning pin 38, which is conducive to improving the processing accuracy.

[0037] Specifically, the pressing mechanism 5 includes a driving cylinder 51 and a pressing plate 52 that moves up and down driven by the driving cylinder 51. The driving cylinder 51 is fixed on the workpiece positioning seat 3. The downward movement of the pressing plate 52 is suitable for pressing the edge of the side plate 8 against the side plate supporting surface 35, thereby preventing the defect that the riveting accuracy is inaccurate due to the loosening of the side plate 8 during riveting. When removing the side plate 8 from the side plate supporting surface 35, the pressing mechanism 5 should be controlled to release the pressing limit on the side plate 8 first.

[0038] Preferably, in order to facilitate the removal of the workpiece from the workpiece positioning seat 3 after the riveting of the side plate 8 and the positioning shaft 9 is completed, the middle part of the workpiece positioning seat 3 has an inner cavity 30. The lower end of the positioning shaft insertion hole 36 is connected to the inner cavity 30. The positioning shaft insertion hole 36 is a stepped hole that is thicker at the top and thinner at the bottom. The step in the stepped hole serves as the retaining platform 37. A push plate 6 that can move up and down is provided in the inner cavity 30. A push shaft 61 inserted into the positioning shaft insertion hole 36 is fixed on the upper surface of the push plate 6. A push plate cylinder 62 is fixed at the bottom of the workpiece positioning seat 3. The cylinder rod 63 of the push plate cylinder 62 extends upward into the inner cavity 30 and is fixedly connected to the push plate 6. When the push plate 6 is in the lowest position, the top end of the push shaft 61 is not higher than the retaining platform 37. In this way, after the riveting is completed, the push plate cylinder 62 drives the push plate 6 to move upward, and then applies an upward thrust to the positioning shaft 9 through the push shaft 61, pushing the workpiece upward, so that it is convenient to remove the riveted workpiece from the workpiece positioning seat 3, improving work efficiency.

[0039] As Figures 1 to 3 As shown, the workpiece positioning seat 3 includes an upper layer plate 31, a middle layer plate 32, a lower layer plate 33 and a mounting frame 34 that are stacked and fixed. The middle layer plate 32 is a square frame structure, and its interior constitutes the inner cavity 30. The positioning shaft insertion hole 36 is provided on the upper layer plate 31. A cylinder rod through hole for the cylinder rod 63 of the push plate cylinder 62 to pass through is provided on the lower layer plate 33. The lower layer plate 33 is fixed at the upper end of the mounting frame 34. The mounting frame 34 is fixed on the two-dimensional driving mechanism 4. The push plate cylinder 62 is fixed in the mounting frame 34. The pressing mechanism 5 is fixed on the mounting frame 34. Through the reasonable layout of the multi-layer plate structure that is stacked and fixed, it is convenient for the assembly of the workpiece positioning seat 3, and accurate positioning and stable fixation of the workpiece during the processing are realized. In actual operation, the upper layer plate 31, the middle layer plate 32 and the lower layer plate 33 can be assembled separately, or the middle layer plate 32 can be integrally formed with the upper layer plate 31 or the lower layer plate 33, which can reduce the number of components.

[0040] As Figure 4As shown, in order to ensure smooth and stable up-and-down movement of the push plate 6, mounting blocks 7 are installed at the peripheral side edges of the push plate 6. A movable rod 71 that can move horizontally, a spring 74 sleeved on the movable rod 71, and rollers 72 installed at the outer ends of the movable rods 71 are mounted on the mounting blocks 7. Transverse jacks 73 are provided on the mounting blocks 7, and the movable rods 71 pass through the transverse jacks 73, so that the movable rods 71 can be horizontally installed and limited and guided in movement through the transverse jacks 73. Under the elastic force of the spring 74, the rollers 72 abut against the side wall of the inner cavity 30, so that when the push plate 6 moves up and down, the rollers 72 roll up and down along the side wall of the inner cavity 30. By combining the use of the mounting blocks 7, the movable rods 71, the springs 74, and the rollers 72, the smooth and stable up-and-down movement of the push plate 6 in the inner cavity 30 is ensured. The function of the spring 74 is to provide continuous elastic force for the movable rod 71, so that the rollers 72 can closely adhere to the side wall of the inner cavity 30, thereby ensuring the smoothness and stability of the movement.

[0041] As Figure 4 shown, a limit buckle 75 is provided on the movable rod 71, and the limit buckle 75 is in abutting cooperation with the mounting block 7 to limit the movable rod 71 from detaching from the mounting block 7. Thus, during assembly, the movable rod 71 can be pre-mounted on the mounting block 7 through the cooperation of the buckle 75 and the mounting block 7, preventing the movable rod 71 from accidentally detaching from the mounting block 7 during the assembly process.

[0042] As Figure 4 shown, an opening 76 that penetrates radially is provided at one end of the movable rod 71 away from the roller 72. The purpose of setting the opening 76 is to make the corresponding position of the movable rod 71 have radially expandable elasticity. The limit buckle 75 is a clamping platform provided on the side wall of the movable rod 71 and corresponding to the position of the opening 76, and one end of the clamping platform away from the roller 72 is a slope. During assembly, the end of the movable rod 71 provided with the clamping platform is passed through the transverse jack 73 on the mounting block 7. The clamping platform passes through the transverse jack 73 (the clamping platform passing through the transverse jack 73 causes the corresponding part of the movable rod 71 to be squeezed and deformed). After the clamping platform passes through the transverse jack 73, it is reset and abuts against the corresponding side surface of the mounting block 7 through the end of the clamping platform close to the roller 72, thereby playing a role in limiting the movable rod 71 to prevent the movable rod 71 from detaching from the mounting block 7; the setting of the slope is to reduce the resistance when the clamping platform passes through the transverse jack 73.

[0043] Optionally, the two-dimensional driving mechanism 4 includes a first electric lead screw mechanism 41 for driving the workpiece positioning seat 3 to move in the first direction and a second electric lead screw mechanism 42 for driving the first electric lead screw mechanism 41 to move in the second direction (when the first electric lead screw mechanism 41 moves in the second direction, it drives the workpiece positioning seat 3 to move in the second direction). Through the mutual cooperation of the two electric lead screw mechanisms, the two-dimensional driving mechanism realizes the precise positioning and movement of the workpiece in the plane. Specifically, a base can be fixedly connected to the slider of the second electric lead screw mechanism, the first electric lead screw mechanism 41 is fixed on the base, and the workpiece positioning seat 3 is fixed on the slider of the first electric lead screw mechanism 41. The first direction and the second direction are two mutually perpendicular directions in the horizontal plane. The electric lead screw mechanism 41 includes a motor, a lead screw driven by the motor to rotate, and a slider threadedly engaged with the lead screw. When the motor drives the lead screw to rotate, it drives the slider to move linearly, and then drives the controlled part to move in the preset direction.

[0044] The two-dimensional driving mechanism 4, the riveting mechanism 2, the pressing mechanism 5 and the push plate cylinder 62 are all connected to the control system of the numerical control riveting machine, and corresponding actions are controlled and executed by the control system.

[0045] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A numerical control riveting machine, comprising a machine table (1), a riveting mechanism (2), a workpiece positioning seat (3) and a two-dimensional driving mechanism (4). A gantry (11) is fixed to the upper part of the machine table (1). The riveting mechanism (2) is installed on the gantry (11). The two-dimensional driving mechanism (4) is installed on the machine table (1) and is used to drive the workpiece positioning seat (3) to perform planar movement on a horizontal plane. The upper end of the workpiece positioning seat (3) has a positioning structure for a bearing side plate (8) and a positioning shaft (9). The workpiece positioning seat (3) is located below the riveting mechanism (2); characterized in that, The positioning structure includes a side plate support surface (35) provided on the upper surface of the workpiece positioning seat (3) and a positioning shaft jack (36) provided on the side plate support surface (35). The positioning shaft jack (36) is arranged in the up and down direction. A retaining platform (37) for upwardly supporting the positioning shaft (9) is provided in the positioning shaft jack (36), and a pressing mechanism (5) for pressing the edge of the side plate (8) is provided on the side of the workpiece positioning seat (3).

2. The numerical control riveting machine according to claim 1, characterized in that, A positioning pin (38) protruding upward is provided on the side plate support surface (35). The positioning pin (38) is adapted to be inserted and cooperate with a positioning hole on the side plate (8). The top end of the positioning pin (38) is a conical structure.

3. The numerical control riveting machine according to claim 1, characterized in that, The pressing mechanism (5) includes a driving cylinder (51) and a pressing plate (52) that moves up and down driven by the driving cylinder (51). The driving cylinder (51) is fixed on the workpiece positioning seat (3). The downward movement of the pressing plate (52) is adapted to press the edge of the side plate (8) against the side plate support surface (35).

4. The numerical control riveting machine according to claim 1, wherein, The middle part of the workpiece positioning seat (3) has an inner cavity (30). The lower end of the positioning shaft jack (36) is communicated with the inner cavity (30). The positioning shaft jack (36) is a stepped hole that is thicker at the top and thinner at the bottom. The step in the stepped hole serves as the retaining platform (37). A push plate (6) that can move up and down is provided in the inner cavity (30). A push shaft (61) fixed to the upper surface of the push plate (6) is inserted into the positioning shaft jack (36). A push plate cylinder (62) is fixed to the bottom of the workpiece positioning seat (3). The cylinder rod (63) of the push plate cylinder (62) extends upward into the inner cavity (30) and is fixedly connected to the push plate (6). When the push plate (6) is in the lowest position, the top end of the push shaft (61) is not higher than the retaining platform (37).

5. The numerical control riveting machine according to claim 4, characterized in that, The workpiece positioning seat (3) includes an upper layer plate (31), a middle layer plate (32), a lower layer plate (33) and a mounting frame (34) that are stacked and fixed. The middle layer plate (32) is a square frame structure, and its interior forms the inner cavity (30). The positioning shaft jack (36) is provided on the upper layer plate (31). A cylinder rod through hole for the cylinder rod (63) of the push plate cylinder (62) to pass through is provided on the lower layer plate (33). The lower layer plate (33) is fixed to the upper end of the mounting frame (34). The mounting frame (34) is fixed on a two-dimensional driving mechanism (4). The push plate cylinder (62) is fixed inside the mounting frame (34). The pressing mechanism (5) is fixed on the mounting frame (34).

6. The numerical control riveting machine according to claim 4, wherein Mounting blocks (7) are installed at the peripheral side edges of the push plate (6). A movable rod (71) that can move horizontally, a spring (74) sleeved on the movable rod (71), and a roller (72) installed at the outer end of the movable rod (71) are installed on the mounting blocks (7). A horizontal jack (73) is provided on the mounting blocks (7). The movable rod (71) passes through the horizontal jack (73). Under the elastic force of the spring (74), the roller (72) abuts against the side wall of the inner cavity (30).

7. The numerical control riveting machine according to claim 6, characterized in that, A limit buckle (75) is provided on the movable rod (71), and the limit buckle (75) is in abutting cooperation with the mounting block (7) to limit the movable rod (71) from detaching from the mounting block (7).

8. The numerical control riveting machine according to claim 7, wherein An opening (76) penetrating radially is provided at one end of the movable rod (71) far from the roller (72). The limit buckle (75) is a clamping platform provided on the side wall of the movable rod (71) and corresponding to the position of the opening (76), and one end of the clamping platform far from the roller (72) is an inclined surface.

9. The numerical control riveting machine according to any one of claims 1 to 8, characterized in that, The two-dimensional driving mechanism (4) includes a first electric lead screw mechanism (41) for driving the workpiece positioning seat (3) to move in a first direction and a second electric lead screw mechanism (42) for driving the first electric lead screw mechanism (41) to move in a second direction. The first direction and the second direction are two directions perpendicular to each other in the horizontal plane.

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