A clamping mechanism for numerically controlled machining

Abstract

The utility model relates to a kind of clamping mechanisms for numerical control machining, including mesa, left support rod, cylinder and right support rod;The top of left support rod and right support rod is equipped with clamping assembly, and clamping assembly includes fixed block, worm wheel, support, worm, first motor and clamping plate;Fixed block is fixed in the top of left support rod, right support rod;Worm wheel rotation is installed in the inner side of fixed block;Support is fixed in the top of fixed block;Worm rotation is installed in support, and is engaged with the worm wheel below;First motor is fixed in the outside of support;Clamping plate is fixed in the inner side of worm wheel.Workpiece is placed between two clamping plates, after starting cylinder, cylinder is driven right support rod to move left by piston rod, so that two clamping plates are close to each other and workpiece is clamped, then start first motor, first motor drives worm to rotate, worm drives worm wheel to rotate in turn, and then drives clamping plate to rotate, to change the inclination angle of workpiece front and rear direction, facilitate workpiece processing.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machining technology, and in particular relates to a clamping mechanism for CNC machining. Background Technology

[0002] Numerical control technology is the technology of using computer knowledge to control mechanical components with written electronic programs. It calculates the running path and operation time, all of which are achieved through timing logic control engineering. In order to shorten processing time and reduce the cost of manual operation, CNC machine tools are often used for automated operation.

[0003] To prevent workpiece wobbling during CNC machining and thus maintain operational accuracy, clamping and fixing mechanisms are often used to lock the workpiece in place. However, such structures are often fixed, and the workpiece cannot be adjusted in terms of machining angle after clamping, which also affects the operation process.

[0004] Now, a clamping mechanism for CNC machining is proposed to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to propose a clamping mechanism for CNC machining, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A clamping mechanism for CNC machining, comprising

[0008] The countertop has a horizontal groove on the right side inside, and the top of the horizontal groove has a slot.

[0009] The left support rod is fixed to the top left side of the platform.

[0010] The cylinder is fixed inside the transverse groove on the left side;

[0011] The right support rod passes through the slot and is fixed to the top of the piston rod of the cylinder;

[0012] The left and right support rods are each equipped with a clamping assembly at their tops. The clamping assembly includes...

[0013] A fixing block is fixed to the top of the left and right support rods;

[0014] A worm gear is rotatably mounted on the inner side of the fixed block;

[0015] A bracket is fixed to the top of the fixed block, and the bracket extends above the worm gear;

[0016] The worm gear is rotatably mounted in the bracket and meshes with the worm wheel below;

[0017] The first motor is fixed to the outside of the bracket, and its output shaft is fixedly connected to the worm gear to drive the worm gear to rotate.

[0018] The clamp is fixed to the inner side of the worm gear.

[0019] Preferably, a guide rod is fixed inside the right side of the transverse groove, and the piston rod has a slot inside, in which the guide rod is inserted.

[0020] Preferably, the support includes

[0021] The base is fixed to the top of the fixing block;

[0022] Two cantilever arms, one end of which is fixed to the base, and the other end extends above the worm gear;

[0023] The worm gear is rotatably mounted between the two cantilever arms, and the first motor is fixed to the outside of the cantilever arms.

[0024] Preferably, a sponge pad is fixed to the inner side of the clamping plate.

[0025] Preferably, it also includes a synchronization component, the synchronization component comprising:

[0026] Two short blocks are fixed to the bottom of the two clamps, respectively;

[0027] Two cylindrical bodies are fixed to the inner sides of the two short blocks respectively. The inner side of the two cylindrical bodies away from the short blocks has a movable groove, and the outer side is threaded with a bolt.

[0028] The connecting rod is inserted into the movable slots of the two cylinders at both ends.

[0029] Preferably, it also includes a tabletop support assembly, the tabletop support assembly comprising...

[0030] Two support plates are fixed to the front and rear sides of the bottom of the table surface;

[0031] A column is fixed on the machine tool and located between the two support plates. A transverse support rod is fixedly inserted through the top of the column, and the two ends of the transverse support rod are respectively connected to the two support plates through bearings.

[0032] The second motor has its housing fixed to the outside of one of the support plates, and its output shaft is fixedly connected to the transverse support rod.

[0033] Preferably, the tabletop support assembly also includes

[0034] A limiting shell is fixed to the bottom of the platform and located between the two support plates. The inner top of the limiting shell is an arc-shaped surface with two arc-shaped grooves on the arc-shaped surface.

[0035] The top of the column is located in the limiting shell, the top surface of the column is an arc-shaped surface and two balls are movably embedded therein, and the upper parts of the two balls are located in two arc-shaped grooves.

[0036] This utility model provides a clamping mechanism for CNC machining, which has the following advantages:

[0037] 1. When using this mechanism, the right support rod can be moved left and right along the slot by the cylinder. In specific operation, the workpiece is placed between the two clamping plates. After the cylinder is started, the cylinder drives the right support rod to move to the left through the piston rod, so that the two clamping plates move closer to each other and clamp the workpiece. Then the first motor is started, which drives the worm gear to rotate. The worm gear then drives the worm wheel to rotate, which in turn drives the clamping plates to rotate, thereby changing the tilt angle of the workpiece in the front and back direction, which facilitates the processing of the workpiece.

[0038] 2. When the workpiece is clamped between the two second clamping plates and the second motor is started, the output shaft of the second motor is fixedly connected to the transverse support rod, i.e., rigidly connected to the column, so the output shaft cannot rotate. This generates a reaction force that causes the motor housing to rotate. When the motor housing rotates, it drives the support plate to rotate around the transverse support rod as the axis, thereby causing the table to swing left and right, thus changing the tilt angle of the workpiece in the left and right directions. Combined with the aforementioned clamping assembly on the table that can change the tilt angle of the workpiece in the front and back directions, this invention can achieve multi-angle and multi-directional positioning of the workpiece, meeting complex processing requirements. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the clamping mechanism of this utility model used in CNC machining;

[0040] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0041] Figure 3 This is a schematic diagram of the structure of the synchronization component of this utility model;

[0042] Figure 4 This is a side sectional view of the tabletop support assembly of this utility model;

[0043] Figure 5 This is a front sectional view of the tabletop support component of this utility model.

[0044] In the diagram: 1. Tabletop; 2. Left support rod; 3. Right support rod; 4. Bracket; 5. Clamping plate; 6. Sponge pad; 7. Fixing block; 8. Short block; 9. Slot; 10. Horizontal slot; 11. Guide rod; 12. Slot; 13. Piston rod; 14. Cylinder; 15. Column; 16. Support plate; 17. Second motor; 18. Worm gear; 19. First motor; 20. Worm wheel; 21. Movable slot; 22. Cylinder; 23. Bolt; 24. Ball bearing; 25. Limiting shell; 26. Connecting rod; 27. Horizontal support rod. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0046] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] Example

[0050] Reference Figure 1-2 A clamping mechanism for CNC machining, comprising:

[0051] The tabletop 1 has a horizontal groove 10 on its inner right side, and the top of the horizontal groove 10 has a slot 9;

[0052] Left support rod 2 is fixed to the top left side of the platform 1;

[0053] Cylinder 14 is fixed inside the left side of the transverse groove 10;

[0054] The right support rod 3 passes through the slot 9 and is fixed to the top of the piston rod 13 of the cylinder 14;

[0055] The top of the left support rod 2 and the right support rod 3 are both equipped with clamping assemblies, and the clamping assemblies include fixing blocks 7, which are fixed to the top of the left support rod 2 and the right support rod 3.

[0056] The worm gear 20 is rotatably mounted on the inner side of the fixed block 7;

[0057] The bracket 4 is fixed to the top of the fixing block 7 and extends above the worm gear 20;

[0058] The worm gear 18 is rotatably mounted in the bracket 4 and meshes with the worm wheel 20 below it;

[0059] The first motor 19 is fixed to the outside of the bracket 4, and its output shaft is fixedly connected to the worm gear 18 for driving the worm gear 18 to rotate.

[0060] The clamping plate 5 is fixed to the inner side of the worm gear 20.

[0061] It should be noted that in this invention, the side opposite to the two identical components is the inner side, and the side opposite to each other is the outer side.

[0062] When in use, the cylinder 14 can drive the right support rod 3 to move left and right along the slot 9. In specific operation, the workpiece is placed between the two clamping plates 5. After starting the cylinder 14, the cylinder 14 drives the right support rod 3 to move to the left through the piston rod 13, so that the two clamping plates 5 move closer to each other and clamp the workpiece. Then, the first motor 19 is started, which drives the worm gear 18 to rotate. The worm gear 18 then drives the worm wheel 20 to rotate, which in turn drives the clamping plates 5 to rotate, thereby changing the tilt angle of the workpiece in the front and back direction, which facilitates the processing of the workpiece.

[0063] As a preferred embodiment, a guide rod 11 is fixed inside the right side of the transverse groove 10, and the piston rod 13 has a slot 12 inside. The guide rod 11 is inserted into the slot 12. When the piston rod 13 moves telescopically, it can move along the guide rod 11 through the slot 12 to ensure the stability of the movement of the piston rod 13.

[0064] As a preferred embodiment, the stent 4 includes

[0065] The base is fixed to the top of the fixing block 7;

[0066] Two cantilever arms, one end of which is fixed to the base, and the other end extends above the worm gear 20;

[0067] The worm gear 18 is rotatably mounted between the two cantilever arms, and the first motor 19 is fixed to the outside of the cantilever arms.

[0068] As a preferred embodiment, a sponge pad 6 is fixed to the inner side of the clamping plate 5 to avoid damaging the workpiece.

[0069] As a preferred implementation scheme, refer to 1. Figure 3 It also includes a synchronization component, which includes two short blocks 8, respectively fixed to the bottom of the two clamping plates 5;

[0070] Two cylindrical bodies 22 are fixed inside the two short blocks 8 respectively. The two cylindrical bodies 22 have a movable groove 21 inside at the end away from the short block 8, and a bolt 23 is threaded on the outside.

[0071] The connecting rod 26 is inserted into the movable slots 21 of the two cylinders 22 at both ends.

[0072] When the right support rod 3 approaches the left support rod 2, the cylinder 22 will also slide along the connecting rod 26. Before the two clamping plates 5 clamp the workpiece and start the first motor 19, the connecting rod 26 inserted in the cylinder 22 can be tightened by the locking bolt 23, so that the two cylinders 22 and the connecting rod 26 are connected as one. This is beneficial to ensure the synchronicity of the rotation of the clamping plates 5 on both sides when the first motor 19 is started to drive the clamping plates 5 to rotate.

[0073] As a preferred implementation scheme, refer to Figure 1 , Figure 4 , Figure 5 It also includes a tabletop support assembly, the tabletop support assembly including...

[0074] Two support plates 16 are fixed to the front and rear sides of the bottom of the platform 1;

[0075] The column 15 is fixed on the machine tool and located between the two support plates 16. A transverse support 27 is fixedly inserted through the top of the column 15. The two ends of the transverse support rod 27 are respectively connected to the two support plates 16 through bearings.

[0076] The second motor 17 has its motor housing fixed to the outside of one of the support plates 16, and its output shaft is fixedly connected to the transverse support rod 27.

[0077] When the workpiece is clamped between two clamping plates 5 and the second motor 17 is started, the output shaft of the second motor 17 is fixedly connected to the transverse support rod 27, that is, rigidly connected to the column 15. The output shaft cannot rotate, thus generating a reaction force that causes the motor housing to rotate. When the motor housing rotates, it drives the support plate 16 to rotate around the transverse support rod 27 as the axis, thereby causing the table 1 to swing left and right, thereby changing the tilt angle of the workpiece in the left and right directions. Combined with the aforementioned clamping assembly on the table 1 that can change the tilt angle of the workpiece in the front and back directions, the present invention can realize the positioning of the workpiece in multiple angles and directions, meeting the requirements of complex processing.

[0078] As a preferred embodiment, the tabletop support assembly further includes

[0079] The limiting shell 25 is fixed to the bottom of the platform 1 and located between the two support plates 16. The inner top of the limiting shell 25 is an arc-shaped surface, and the arc-shaped surface has two arc-shaped sliding grooves (not shown).

[0080] The top of the column 15 is located in the limiting shell 25. The top surface of the column 15 is an arc-shaped surface and two balls 24 are movably embedded therein. The upper parts of the two balls 24 are located in two arc-shaped grooves.

[0081] During the swinging process, the ball bearings 24 slide in the arc-shaped groove, and the column 15 supports the limiting shell 25 through the ball bearings 24, which supports the table surface 1 and ensures the stability of the table surface 1. At the same time, the limiting shell 25 can also limit the maximum swing angle of the table surface 1.

[0082] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A clamping mechanism for CNC machining, characterized in that: include The countertop has a horizontal groove on the right side inside, and the top of the horizontal groove has a slot. The left support rod is fixed to the top left side of the platform. The cylinder is fixed inside the transverse groove on the left side; The right support rod passes through the slot and is fixed to the top of the piston rod of the cylinder; The top of both the left and right support rods is equipped with a clamping assembly, which includes a fixing block that is fixed to the top of the left and right support rods. A worm gear is rotatably mounted on the inner side of the fixed block; A bracket is fixed to the top of the fixed block, and the bracket extends above the worm gear; The worm gear is rotatably mounted in the bracket and meshes with the worm wheel below; The first motor is fixed to the outside of the bracket, and its output shaft is fixedly connected to the worm gear to drive the worm gear to rotate. The clamp is fixed to the inner side of the worm gear.

2. The clamping mechanism for CNC machining according to claim 1, characterized in that: A guide rod is fixed inside the right side of the transverse groove, and the piston rod has a slot inside, in which the guide rod is inserted.

3. The clamping mechanism for CNC machining according to claim 1, characterized in that: The bracket includes a base, which is fixed to the top of the fixing block; Two cantilever arms, one end of which is fixed to the base, and the other end extends above the worm gear; The worm gear is rotatably mounted between the two cantilever arms, and the first motor is fixed to the outside of the cantilever arms.

4. The clamping mechanism for CNC machining according to claim 1, characterized in that: A sponge pad is fixed to the inner side of the clamp.

5. A clamping mechanism for CNC machining according to claim 1, characterized in that: It also includes a synchronization component, the synchronization component including Two short blocks are fixed to the bottom of the two clamps, respectively; Two cylindrical bodies are fixed to the inner sides of the two short blocks respectively. The inner side of the two cylindrical bodies away from the short blocks has a movable groove, and the outer side is threaded with a bolt. The connecting rod is inserted into the movable slots of the two cylinders at both ends.

6. A clamping mechanism for CNC machining according to claim 1, characterized in that: It also includes a tabletop support assembly, the tabletop support assembly including Two support plates are fixed to the front and rear sides of the bottom of the table surface; A column is fixed on the machine tool and located between the two support plates. A transverse support rod is fixedly inserted through the top of the column, and the two ends of the transverse support rod are respectively connected to the two support plates through bearings. The second motor has its housing fixed to the outside of one of the support plates, and its output shaft is fixedly connected to the transverse support rod.

7. A clamping mechanism for CNC machining according to claim 6, characterized in that: The tabletop support assembly also includes A limiting shell is fixed to the bottom of the platform and located between the two support plates. The inner top of the limiting shell is an arc-shaped surface with two arc-shaped grooves on the arc-shaped surface. The top of the column is located in the limiting shell, the top surface of the column is an arc-shaped surface and two balls are movably embedded therein, and the upper parts of the two balls are located in two arc-shaped grooves.

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