Numerical control machine tool clamp

Abstract

The utility model provides a numerical control machine tool clamp. The numerical control machine tool clamp comprises a supporting assembly, a supporting plate, a supporting plate, a bearing assembly, a bearing plate, a hydraulic cylinder and a clamping assembly. The supporting plate is arranged at the position, close to one end, of the middle position above the supporting plate, a connecting plate rotationally connected with the supporting plate is fixed to one end of the transverse frame, a two-way screw rod is rotationally arranged in the transverse frame, and a servo motor for driving the two-way screw rod to rotate is installed on one side of the transverse frame; a clamping plate is inserted into the position, close to the two sides, of one side of the transverse frame, and the clamping plate is in threaded connection with the two-way screw. A workpiece is placed on the bearing plate, the bearing plate plays a role in bearing the workpiece, and the position of the bearing plate is adjusted by starting the hydraulic cylinder in an unfolded or contracted state, so that the vertical position of the workpiece can be adjusted according to the size of the workpiece, and the center line of the two clamping plates and the center line of the workpiece are kept on the same straight line; and therefore, the workpiece clamping stability is improved.

Description

Technical Field

[0001] The utility model relates to a clamp, in particular to a CNC machine tool clamp, belonging to the technical field of CNC machine tools. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and represent them in coded numbers, which are then input into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool, automatically process parts according to the shape and size required by the drawing, realize automation, and improve work efficiency.

[0003] A Chinese public patent (publication number: CN205465342U) discloses a CNC machine tool fixture, which belongs to the technical field of CNC machine tools, and includes a bracket, on which two symmetrical square concave plates are fixed, a bidirectional cylinder is arranged on the bracket, and the bidirectional cylinder is provided with two fixed arms, and a top plate is fixed on each fixed tube; a pressing plate is fixed on each top plate, and the two pressing plates are directly opposite to the processing surface of the square concave plate; the pressing plate moves in the direction close to the square concave plate or away from the square concave plate under the action of the cylinder. The utility model uses vacuum suction and bidirectional cylinders, internal suction and external pressure, double strength, to ensure that the clamping force is large and uniform, and the product can be evenly clamped. Usually, the staff directly places the workpiece to be clamped between the two clamps. If the workpiece is placed between the clamps and there is an up and down deviation, it will affect the firmness of the workpiece clamping, and then affect the later machine tool processing of the workpiece; for this reason, a CNC machine tool fixture is proposed. Utility Model Content

[0004] In view of this, the utility model provides a CNC machine tool fixture to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a CNC machine tool fixture includes a support assembly, a support plate, a support plate, a bearing assembly, a bearing plate, a hydraulic cylinder and a clamping assembly;

[0006] The support plate is arranged at a middle position above the support plate and near one end, a bearing assembly is arranged at a middle position of the support plate, and the bearing assembly includes a bearing plate, the bearing plate is suspended above the support plate, a hydraulic cylinder for the bearing plate to move up and down is arranged between the bottom end of the bearing plate and the support plate, and a clamping assembly is arranged on the support plate;

[0007] The clamping assembly includes a cross frame, a clamping plate, a bidirectional screw, a servo motor and a connecting plate. The cross frame is arranged above the supporting assembly. A connecting plate rotatably connected to the support plate is fixed at one end of the cross frame. A bidirectional screw rotates inside the cross frame. A servo motor for driving the bidirectional screw to rotate is installed on one side of the cross frame. A clamping plate is inserted into one side of the cross frame and close to both sides, and the clamping plate and the bidirectional screw are threadedly connected.

[0008] Further preferably, a protection component is provided between adjacent clamping plates, and the protection component comprises a baffle plate, and the baffle plate is installed on a side away from the two clamping plates.

[0009] Further preferably, guide grooves are provided at upper and lower positions of one end inside the cross frame, a pleated plate is installed between the two clamping plates, and upper and lower parts of the pleated plate are inserted into the guide groove.

[0010] Further preferably, a rotating assembly is provided on the support plate at one end of the support plate away from the load-bearing assembly, and the rotating assembly includes a fixed shaft and a connecting frame, the fixed shaft is fixed to one end inside the connecting plate, the connecting frame is fixed to the top of the support plate, and an electric push rod is installed between the connecting frame and the fixed shaft.

[0011] Further preferably, an oil injection assembly is installed at one end of the clamping assembly, and the oil injection assembly includes a micro oil pump, the micro oil pump is installed at one end of the cross frame, an oil chamber is opened inside the cross frame near the bottom end, an oil inlet pipe connected to the oil chamber is installed on one side of the cross frame, a plurality of interconnected oil nozzles are opened at the top end of the cross frame and located directly above the bidirectional screw, and a pipeline is installed to connect the micro oil pump and the oil chamber and the micro oil pump and the oil nozzle.

[0012] Further preferably, the bottom end of the oil nozzle is located above the clamping plate inserted in the cross frame, and the height of the plurality of oil nozzles is equal to the length of the bidirectional screw.

[0013] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0014] 1. The utility model places the workpiece on the bearing plate, which bears the workpiece. The position of the bearing plate is adjusted in the expanded or contracted state by using a hydraulic cylinder. Therefore, the upper and lower positions of the bearing plate can be adjusted according to the size of the workpiece, and the center lines of the two clamping plates and the center line of the workpiece are kept in the same straight line, thereby improving the stability of the workpiece clamping.

[0015] 2. When the clamping plate clamps the workpiece, the utility model blocks the sliding groove on the horizontal frame for the clamping plate to slide through the baffle plate and the pleated plate, so as to keep the sliding groove on the horizontal frame for the clamping plate to slide in a closed state. This can reduce the debris falling into the horizontal frame when the machine tool processes the workpiece, and subsequently affect the rotation of the bidirectional screw.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the overall isometric structural diagram of the utility model;

[0019] Figure 2 It is the overall state structure diagram of the utility model;

[0020] Figure 3 This is a structural diagram of the connection plate and the electric push rod of the utility model;

[0021] Figure 4 It is a partial explosion structure diagram of the utility model;

[0022] Figure 5 It is a partial cross-sectional structural diagram of the cross frame of the utility model.

[0023] 1. Support assembly; 11. Support plate; 12. Support plate; 2. Load-bearing assembly; 21. Load-bearing plate; 22. Hydraulic cylinder; 3. Clamping assembly; 31. Cross frame; 32. Clamping plate; 33. Bidirectional screw; 34. Servo motor; 35. Connecting plate; 4. Protective assembly; 41. Baffle; 42. Pleated plate; 43. Guide groove; 5. Rotating assembly; 51. Fixed shaft; 52. Connecting frame; 53. Electric push rod; 6. Oil filling assembly; 61. Pipeline; 62. Oil inlet pipe; 63. Oil chamber; 64. Micro oil pump; 65. Oil nozzle. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, the embodiment of the utility model provides a CNC machine tool fixture, including a support assembly 1, a support plate 11, a support plate 12, a bearing assembly 2, a bearing plate 21, a hydraulic cylinder 22 and a clamping assembly 3;

[0027] The support plate 12 is arranged at a middle position above the support plate 11 and near one end. A bearing assembly 2 is arranged at a middle position on the support plate 11, and the bearing assembly 2 includes a bearing plate 21, which is suspended above the support plate 11. A hydraulic cylinder 22 for moving the bearing plate 21 up and down is installed between the bottom end of the bearing plate 21 and the support plate 11, and a clamping assembly 3 is arranged on the support plate 12;

[0028] The clamping assembly 3 includes a cross frame 31, a clamping plate 32, a bidirectional screw 33, a servo motor 34 and a connecting plate 35. The cross frame 31 is arranged above the supporting assembly 1. A connecting plate 35 rotatably connected to the support plate 12 is fixed at one end of the cross frame 31. A bidirectional screw 33 rotates in the cross frame 31. The thread patterns on both sides of the surface of the bidirectional screw 33 are opposite. A servo motor 34 for driving the bidirectional screw 33 to rotate is installed on one side of the cross frame 31. A clamping plate 32 is inserted at one side of the cross frame 31 and close to both sides. A strip-shaped slideway for the clamping plate 32 to slide is provided at one end of the cross frame 31. The clamping plate 32 and the bidirectional screw 33 are threadedly connected. After the servo motor 34 is started, the output shaft of the servo motor 34 drives the bidirectional screw 33 to rotate when rotating forward and reversely. When the bidirectional screw 33 rotates, the clamping plates 32 approach or move away from each other. At this time, the clamping plate 32 clamps and fixes the workpiece so that the subsequent CNC machine tool can process the workpiece.

[0029] In one embodiment, a protection assembly 4 is provided between adjacent clamping plates 32, and the protection assembly 4 includes a baffle 41, which is installed on the side away from the two clamping plates 32. The baffle 41 can seal the slide groove on the horizontal frame 31 on the side away from the two clamping plates 32, thereby effectively preventing debris from falling into the horizontal frame 31.

[0030] In one embodiment, a guide groove 43 is provided at the upper and lower parts of one end of the interior of the horizontal frame 31, and a pleated plate 42 is installed between the two clamping plates 32, and the upper and lower parts of the pleated plate 42 are inserted into the guide groove 43. When the two clamping plates 32 are close to or away from each other, the bidirectional screw 33 is in a contracted or expanded state, and the pleated plate 42 is used to close the slide groove on the horizontal frame 31 between the adjacent clamping plates 32, so that the debris dropped during the processing of the workpiece can be prevented from falling into the horizontal frame 31, thereby not affecting the rotation of the bidirectional screw 33.

[0031] In one embodiment, a rotating assembly 5 is provided on the support plate 11 at one end of the support plate 12 away from the bearing assembly 2. The rotating assembly 5 includes a fixed shaft 51 and a connecting frame 52. The fixed shaft 51 is fixed to one end inside the connecting plate 35, and the connecting frame 52 is fixed to the top of the support plate 11. An electric push rod 53 is installed between the connecting frame 52 and the fixed shaft 51. When the electric push rod 53 is expanded or retracted, the horizontal frame 31 can be rotated 90 degrees. By turning the horizontal frame 31 90 degrees, the machine tool can process multiple surfaces of the clamped object.

[0032] In one embodiment, an oil injection assembly 6 is installed at one end of the clamping assembly 3. The oil injection assembly 6 includes a micro oil pump 64. The micro oil pump 64 is installed at one end of the cross frame 31. An oil chamber 63 is provided inside the cross frame 31 near the bottom. An oil inlet pipe 62 connected to the oil chamber 63 is installed on one side of the cross frame 31. A plurality of interconnected oil nozzles 65 are provided at the top of the cross frame 31 and located directly above the bidirectional screw 33. A pipeline 61 is installed to connect the micro oil pump 64 and the oil chamber 63 and the micro oil pump 64 and the oil nozzle 65. The lubricating oil is stored in the oil chamber 63 through the oil inlet pipe 62. The micro oil pump 64 is subsequently started. The lubricating oil flows along the pipeline 61 and then drips onto the bidirectional screw 33 through the oil nozzle 65. This can lubricate the bidirectional screw 33 and prevent the bidirectional screw 33 from rusting and affecting the subsequent clamping of the clamp 32 on the object.

[0033] In one embodiment, the bottom end of the oil nozzle 65 is located above the clamping plate 32 inserted in the cross frame 31, and the wiping height of the multiple oil nozzles 65 is equal to the length of the bidirectional screw 33. The lubricating oil can drip onto the bidirectional screw 33 over a large area through the multiple oil nozzles 65, so that the bidirectional screw 33 can be fully lubricated. However, there is a gap between the oil nozzle 65 and the clamping plate 32, so that the oil nozzle 65 does not affect the movement of the clamping plate 32.

[0034] When the utility model is in operation: first, the workpiece to be processed is placed on the carrier plate 21, the hydraulic cylinder 22 is started, the carrier plate 21 is pushed up to a visually suitable position, and then the servo motor 34 is started, the output shaft of the servo motor 34 drives the bidirectional screw 33 to rotate, and the rotation of the bidirectional screw 33 drives the distance between the two clamping plates 32 to decrease, at which time the two clamping plates 32 clamp and fix the workpiece, and the hydraulic cylinder 22 shrinks the carrier plate 21 and moves it downward; at this time, the CNC machine tool can process the workpiece, and the electric push rod 53 can be started, and the electric push rod 53 makes the cross frame 31 flip 90 degrees, and the workpiece is directly above the cross frame 31, and then the workpiece can be processed by the CNC machine tool; however, during the movement of the clamping plate 32, the pleated plate 42 is expanded or contracted, and the pleated plate 42 and the baffle 41 are used to prevent debris from falling into the cross frame 31.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A CNC machine tool fixture, characterized in that: It comprises a support assembly (1), a support plate (11), a support plate (12), a bearing assembly (2), a bearing plate (21), a hydraulic cylinder (22) and a clamping assembly (3); The support plate (12) is arranged at a middle position above the support plate (11) and at a position close to one end; a bearing assembly (2) is arranged at a middle position on the support plate (11), and the bearing assembly (2) comprises a bearing plate (21); the bearing plate (21) is suspended above the support plate (11); a hydraulic cylinder (22) for moving the bearing plate (21) up and down is installed between the bottom end of the bearing plate (21) and the support plate (11); and a clamping assembly (3) is arranged on the support plate (12); The clamping assembly (3) comprises a cross frame (31), a clamping plate (32), a bidirectional screw (33), a servo motor (34) and a connecting plate (35); the cross frame (31) is arranged above the supporting assembly (1); a connecting plate (35) is fixed at one end of the cross frame (31) and is rotatably connected to the supporting plate (12); a bidirectional screw (33) is rotatable in the cross frame (31); a servo motor (34) for driving the bidirectional screw (33) to rotate is installed on one side of the cross frame (31); a clamping plate (32) is inserted into one side of the cross frame (31) and close to both sides, and the clamping plate (32) and the bidirectional screw (33) are threadedly connected.

2. A CNC machine tool fixture according to claim 1, characterized in that: A protection assembly (4) is provided between adjacent clamping plates (32), wherein the protection assembly (4) comprises a baffle (41), and the baffle (41) is installed on a side of the two clamping plates (32) that is away from each other.

3. A CNC machine tool fixture according to claim 2, characterized in that: A guide groove (43) is provided at the upper and lower parts of one end of the cross frame (31), a pleated plate (42) is installed between the two clamping plates (32), and the upper and lower parts of the pleated plate (42) are inserted into the guide groove (43).

4. The CNC machine tool fixture according to claim 1, characterized in that: A rotating assembly (5) is provided on the support plate (11) at one end of the support plate (12) away from the bearing assembly (2), and the rotating assembly (5) comprises a fixed shaft (51) and a connecting frame (52), wherein the fixed shaft (51) is fixed to one end inside the connecting plate (35), and the connecting frame (52) is fixed to the top end of the support plate (11), and an electric push rod (53) is installed between the connecting frame (52) and the fixed shaft (51).

5. The CNC machine tool fixture according to claim 1, characterized in that: An oil injection assembly (6) is installed at one end of the clamping assembly (3), and the oil injection assembly (6) includes a micro oil pump (64). The micro oil pump (64) is installed at one end of the cross frame (31), and an oil chamber (63) is provided inside the cross frame (31) near the bottom end. An oil inlet pipe (62) connected to the oil chamber (63) is installed on one side of the cross frame (31). A plurality of interconnected oil nozzles (65) are provided at the top end of the cross frame (31) and located directly above the bidirectional screw (33). A pipeline (61) is installed to connect the micro oil pump (64) and the oil chamber (63) and the micro oil pump (64) and the oil nozzle (65).

6. A CNC machine tool fixture according to claim 5, characterized in that: The bottom end of the oil nozzle (65) is located above the clamping plate (32) inserted into the cross frame (31), and the length of the plurality of oil nozzles (65) is equal to the length of the bidirectional screw (33).

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