Positioning device of numerical control cutting machine
The positioning device for CNC cutting machines addresses material rotation issues by using symmetric positioning mechanisms and a driving system to maintain precise material positioning, improving cutting quality and efficiency.
Patent Information
- Application Number
- CN202421104716.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing CNC cutting machines fail to maintain accurate positioning of materials during cutting, leading to material rotation and twisting, which affects cutting quality and efficiency.
A positioning device with symmetrically arranged positioning mechanisms, including a slider, positioning plate, and a driving part, utilizing a distance measuring sensor, motor, screw rod, and limiting parts to ensure precise material positioning by controlling the slider's movement and preventing rotation.
The device effectively prevents material twisting during cutting by ensuring accurate positioning, enhancing cutting quality and efficiency.
Smart Images
Figure CN222289444U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cutting positioning, in particular to a positioning device for a numerical control cutting machine. Background Art
[0002] CNC cutting machine positioning refers to how to ensure the accurate position of the workpiece during the cutting process when using a CNC cutting machine to cut metal materials in order to perform precise cutting. Positioning is an important part of CNC cutting machine operation, which is directly related to cutting quality and efficiency.
[0003] The Chinese utility model patent with authorization announcement number CN220838343U discloses a CNC machine tool cutting mechanism, including a base, a workbench fixedly installed on the top of the base, a movable frame slidably installed on the workbench, a displacement mechanism arranged between the movable frame and the base, a first electric push rod fixedly installed in the center of the movable frame, a movable plate fixedly installed at the telescopic end of the first electric push rod, an auxiliary feeding mechanism arranged on the rear side wall of the movable plate, and a cutting mechanism fixedly installed on the front side wall of the movable plate; however, the prior art only positions the surface of the material when processing the material, and the cutting of the material by the mechanism will generate a force on the material, causing the material to rotate on the cutting table or have a tendency to rotate, based on this, the following improvements are proposed. Utility Model Content
[0004] The utility model aims to provide a positioning device for a numerically controlled cutting machine, which has the effect of automatically positioning materials during cutting so that the materials will not be twisted.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a positioning device for a CNC cutting machine, comprising a cutting table, a cutting mechanism slidably arranged on the cutting table, a conveying roller arranged on the cutting mechanism, positioning mechanisms symmetrically arranged on both sides of the cutting table, the positioning mechanism comprising a slider, a positioning plate, and a driving part, the slider is slidably connected to the bottom end of the cutting table, the positioning plate is located above the cutting table, a connecting rod is connected between the positioning plate and the slider, and the connecting rod is slidably connected to the cutting table; the positioning plate is provided with a distance measuring sensor, the cutting table is provided with a controller, the controller is electrically connected to the distance measuring sensor, the cutting table is provided with a limiting part, and the limiting part is used to limit the position of the slider.
[0006] By adopting the above technical solution, by symmetrically arranging the positioning mechanism on both sides of the cutting table, the distance measuring sensor detects the distance between the positioning mechanism and the material and transmits the electrical signal to the controller. The controller controls the driving part to press the positioning plate against the material, and at the same time the cutting mechanism presses the conveying roller against the surface of the material, so that the purpose of not twisting the material when it is subjected to force during processing can be achieved.
[0007] The utility model is further configured as follows: the driving part includes a motor and a screw rod, the motor is electrically connected to the controller, the screw rod is rotatably connected to the bottom end of the cutting table, the slider is threadedly connected to the screw rod, and the screw rod is inserted into the slider.
[0008] By adopting the above technical solution, the controller controls the motor to rotate, and the output end of the motor is coaxially connected to the lead screw, so that the lead screw can rotate to drive the slider to slide at the bottom end of the cutting table.
[0009] The utility model is further configured as follows: a T-shaped block is arranged at the top of the sliding block, a sliding groove is opened at the bottom of the cutting table, and the T-shaped block is embedded in the sliding groove.
[0010] By adopting the above technical solution, by setting a T-block, the slider is fixedly connected to the bottom end of the T-block, which can prevent the T-block from falling and causing the slider to fall.
[0011] The utility model is further configured as follows: the limiting portion is configured as a rack located on the bottom surface of the cutting table.
[0012] The utility model is further configured as follows: the slider is hinged with a pawl, a torsion spring is connected between the pawl and the slider, and the torsion spring pushes the pawl toward the rack.
[0013] By adopting the above technical solution, by setting the pawl and the rack, under normal conditions, the torsion spring naturally presses the pawl against the tooth groove of the rack. When the slider moves, each time the pawl passes a tooth, it will press against the corresponding tooth groove. Moreover, the pawl is set in one direction, which can prevent the material from rotating during processing and driving the slider to move.
[0014] The utility model is further configured as follows: the sliding block is fixedly connected to a cylinder, and the pawl and the cylinder piston end are connected to an elastic member.
[0015] The utility model is further configured as follows: the elastic member is configured as a spring.
[0016] By adopting the above technical solution, by setting up a cylinder and an elastic part, when the cylinder is not contracted, the pawl is pressed against the tooth groove of the rack under the action of the torsion spring. When the cylinder piston rod contracts, it pulls the elastic part, and the elastic part stretches to drive the pawl to leave the rack. At this time, the reverse sliding of the slider will not be interfered by the pawl, and the purpose of resetting the slider can be achieved.
[0017] The utility model is further configured as follows: the positioning plate is provided with a mounting groove, the distance measuring sensor is installed in the mounting groove, and the end of the distance measuring sensor is flush with the end surface of the positioning plate.
[0018] By adopting the above technical solution and setting the installation groove, the distance measured by the sensor is the distance between the positioning plate and the material, and the end of the sensor is flush with the end face of the positioning plate, which can protect the distance measuring sensor.
[0019] The utility model is further configured as follows: a guide groove is provided on the side of the cutting table, and a guide block is provided on the connecting rod, and the guide block is embedded in the guide groove.
[0020] The utility model is further configured as follows: a bearing is connected between the screw rod and the cutting table.
[0021] The beneficial effects of the utility model are as follows: a pawl and a limiting part are provided, the limiting part is provided as a rack, the pawl is provided unidirectionally and a cylinder is provided between the slider and the pawl, when the positioning plate positions the material, the pawl is pressed against the rack by the torsion spring, and the slider cannot move in the reverse direction, when the slider needs to drive the positioning plate to reset, the cylinder contracts to drive the pawl to leave the rack surface, and the slider can move in the reverse direction at this time. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0024] Figure 2 yes Figure 1 Schematic diagram of the local structure of the installation slot
[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in the material conveying direction.
[0026] Figure 4 yes Figure 3 Schematic diagram of the local structure of the middle slider.
[0027] Figure 5 It is a schematic diagram of the vertical cross-sectional structure of the material conveying device of the utility model.
[0028] Figure 6 yes Figure 5 Schematic diagram of the local structure.
[0029] Figure 7 yes Figure 6 Schematic diagram of the local structure of the positioning mechanism.
[0030] In the figure, 1, cutting table; 11, cutting mechanism; 111, conveying roller; 12, controller; 13, limit part; 14, slide groove; 16, guide groove; 2, positioning mechanism; 21, slider; 211, T-block; 212, ratchet; 213, torsion spring; 214, cylinder; 215, elastic member; 22, positioning plate; 221, mounting groove; 222, distance sensor; 23, connecting rod; 231, guide block; 3, driving part; 31, motor; 32, screw rod; 321, bearing. DETAILED DESCRIPTION
[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.
[0032] Embodiment, a CNC cutting machine positioning device, such as Figure 1-Figure 7 As shown, it includes a cutting table 1, a cutting mechanism 11 is slidably connected to the cutting table 1, and a conveying roller 111 is vertically slidably provided on the cutting mechanism 11, and the conveying roller 111 is used to press the upper surface of the material, and a chute 14 is provided at the bottom end of the cutting table 1 in the material conveying direction, and T-blocks 211 are embedded on both sides of the chute 14, and a slider 21 is fixedly connected to the bottom end of the T-block 211, and screw rods 32 are symmetrically rotatably connected on both sides of the cutting table 1, and the screw rods 32 penetrate the slider 21 and are threadedly connected to the slider 21, and the cutting table 1 A limiting portion 13 is provided at the bottom end of the slide groove 14 perpendicular to the material conveying direction. The limiting portion 13 is a rack. A pawl 212 is hinged on the opposite side of the sliders 21 on both sides. A torsion spring 213 is connected between the pawl 212 and the slider 21. The torsion spring 213 pushes the pawl 212 toward the limiting portion 13. The sliders 21 are provided with a cylinder 214. The cylinder body of the cylinder 214 is fixedly arranged on the slider 21. An elastic member 215 is connected between the piston end of the cylinder 214 and the pawl 212. The elastic member 215 is set as a spring.
[0033] Further, such as Figure 1-Figure 7As shown, a controller 12 is provided at the bottom end of the cutting table 1, and the controller 12 is electrically connected to the cylinder 214. A bearing 321 is connected between the cutting table 1 and the screw rod 32. The cutting table 1 is also equipped with a motor 31, and the output end of the motor 31 is connected to the screw rod 32. The motor 31 is electrically connected to the controller 12. The slider 21 is located on the cutting table 1 and is connected to the connecting rod 23 in the front and rear directions of the material conveying. The connecting rod 23 extends to both ends of the cutting table 1 and extends upward to the upper part of the cutting table 1. Guide grooves 16 are provided on both end surfaces of the cutting table 1. The connecting rod 23 is provided with a guide block 231, and the guide block 231 is embedded in the guide groove 16. A positioning plate 22 is connected between the connecting rods 23 on both sides of the same slider 21. The positioning plate 22 is located above the cutting table 1. The positioning plates 22 on both sides are provided with mounting grooves 221 on the opposite sides. A distance sensor 222 is provided in the mounting groove 221, and the distance sensor 222 is electrically connected to the controller 12.
[0034] Its working principle is: the material is placed on the upper surface of the cutting table 1. Before starting cutting, the distance sensor 222 detects the distance between the positioning plate 22 and the material, and transmits the signal to the controller 12. The controller 12 controls the motors 31 on both sides to rotate and drive the positioning plates 22 on both sides to press against the material. At the same time, the screw rod 32 rotates to drive the slider 21 to slide at the bottom, and the pawl 212 passes through the limiting part 13. When the slider 21 stops moving, the pawl 212 engages with the limiting part 13 to limit the slider 21. After the processing is completed, the controller 12 controls the piston of the cylinder 214 to move downward. The piston of the cylinder 214 moves downward to pull the elastic member 215 to pull the pawl 212 downward. At this time, the controller 12 controls the motors 31 on both sides to reverse and drive the positioning plate 22 away from the material. When the cylinder 214 stops pulling, the piston of the cylinder 214 returns to its original position. The torsion spring 213 is not under force and will continue to press the pawl 212 against the tooth groove of the limiting part 13.
Claims
1. A positioning device for a numerically controlled cutting machine, comprising a cutting table (1), wherein the cutting table (1) is slidably provided with a cutting mechanism (11), wherein the cutting mechanism (11) is provided with a conveying roller (111), wherein: The cutting table (1) is symmetrically provided with positioning mechanisms (2), the positioning mechanisms (2) comprising a slider (21), a positioning plate (22), and a driving part (3), the slider (21) being slidably connected to the bottom end of the cutting table (1), the positioning plate (22) being located above the cutting table (1), a connecting rod (23) being connected between the positioning plate (22) and the slider (21), the connecting rod (23) being slidably connected to the cutting table (1); the positioning plate (22) being provided with a distance measuring sensor (222), the cutting table (1) being provided with a controller (12), the controller (12) being electrically connected to the distance measuring sensor (222), the cutting table (1) being provided with a limiting part (13), the limiting part (13) being used to limit the position of the slider (21).
2. A positioning device for a CNC cutting machine according to claim 1, characterized in that: The driving part (3) comprises a motor (31) and a screw rod (32); the motor (31) is electrically connected to the controller (12); the screw rod (32) is rotatably connected to the bottom end of the cutting table (1); the slider (21) is threadedly connected to the screw rod (32); and the screw rod (32) is inserted into the slider (21).
3. A positioning device for a CNC cutting machine according to claim 2, characterized in that: A T-shaped block (211) is arranged at the top end of the sliding block (21), a sliding groove (14) is provided at the bottom end of the cutting table (1), and the T-shaped block (211) is embedded in the sliding groove (14).
4. A positioning device for a CNC cutting machine according to claim 3, characterized in that: The limiting portion (13) is configured as a rack located on the bottom surface of the cutting table (1).
5. A positioning device for a CNC cutting machine according to claim 4, characterized in that: The slider (21) is hinged with a pawl (212), a torsion spring (213) is connected between the pawl (212) and the slider (21), and the torsion spring (213) pushes the pawl (212) toward the rack.
6. A positioning device for a CNC cutting machine according to claim 5, characterized in that: The slider (21) is fixedly connected to a cylinder (214), and the pawl (212) and the piston end of the cylinder (214) are connected to an elastic member (215).
7. A positioning device for a CNC cutting machine according to claim 6, characterized in that: The elastic member (215) is configured as a spring.
8. A positioning device for a CNC cutting machine according to claim 7, characterized in that: The positioning plate (22) is provided with a mounting groove (221), the distance measuring sensor (222) is mounted in the mounting groove (221), and the end of the distance measuring sensor (222) is flush with the end surface of the positioning plate (22).
9. A positioning device for a CNC cutting machine according to claim 8, characterized in that: A guide groove (16) is provided on the side of the cutting table (1), and the connecting rod (23) is provided with a guide block (231), and the guide block (231) is embedded in the guide groove (16).
10. A positioning device for a CNC cutting machine according to claim 9, characterized in that: A bearing (321) is connected between the screw rod (32) and the cutting table (1).