Workpiece automatic centering fixture for numerical control lathe

Abstract

The utility model discloses a numerical control lathe workpiece automatic centering fixture belongs to workpiece fixture technical field, including base, the inside swing joint of base has the mounting panel, the top fixed connection of mounting panel has the installation shell, the top sliding connection of installation shell has the clamping block, the inside of installation shell is provided with first sliding slot, the top of installation shell is provided with third sliding slot, and third sliding slot is linked together with first sliding slot, and the inside sliding connection of first sliding slot has the sliding block, and the inside of sliding block is provided with the guide groove, and the bottom fixed connection of clamping block has the connecting column, through the cooperation of above -mentioned each device between uses, make the staff only need to control the cylinder, can make the movable end of cylinder through the traction plate drive sliding block movement, and the guide groove will cause extrusion to connecting column when sliding block moves, and the connecting column that receives extrusion can drive clamping block and move on the top of installation shell, thereby realized to the clamping of workpiece, effectively improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of workpiece clamping technology, specifically an automatic centering clamping fixture for CNC lathe workpieces. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. It integrates technological achievements from multiple disciplines such as mechanics, automation, computer science, measurement, and microelectronics. Its working principle is to represent the various operations and steps required for the machining process, as well as the relative displacement between the tool and the workpiece, using digital codes. The digital information is sent to the CNC device through a control medium (such as a disk). The CNC device processes and calculates the input information, issues various control signals, controls the machine tool's movements, and automatically processes the required parts according to the prescribed program.

[0003] Upon investigation, a Chinese utility model patent discloses an automatic centering and clamping device for a two-jaw chuck used in CNC lathe machining (publication number: CN207043365U), which includes a base. A through groove is provided at the center of the upper surface of the base. An mounting plate is provided on the upper surface of the base near the through groove. A first sliding groove is provided on the upper surface of the mounting plate. A ball bearing is provided on the bottom surface of the first sliding groove.

[0004] In the aforementioned patent, the spiral groove on the upper surface of the slide plate meshes with the threaded strip on the lower surface of the connecting plate. By rotating the slide plate, the chuck can move linearly and clamp the parts. However, in practical applications, workers need to insert a tool into the wrench insertion hole and rotate the sleeve to drive the slide plate to rotate. This is quite troublesome in practice, consumes a lot of time, and reduces work efficiency.

[0005] Therefore, this utility model provides an automatic centering fixture for CNC lathe workpieces to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This invention provides an automatic centering fixture for CNC lathe workpieces, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an automatic centering fixture for CNC lathe workpieces, comprising a base, an installation plate movably connected inside the base, an installation shell fixedly connected to the top of the installation plate, a clamping block slidably connected to the top of the installation shell, a first sliding groove inside the installation shell, a third sliding groove on the top of the installation shell communicating with the first sliding groove, a slider slidably connected inside the first sliding groove, a guide groove inside the slider, a connecting post fixedly connected to the bottom of the clamping block, the bottom end of the connecting post extending through the third sliding groove into the interior of the first sliding groove and inserting into the interior of the guide groove, a second sliding groove on the installation plate communicating with the first sliding groove, a cylinder fixedly connected to the bottom of the installation plate, and a traction plate fixedly connected to the movable end of the cylinder.

[0008] As a preferred technical solution of this application, a number of rubber strips are fixedly connected to the side surface of the clamping block, and the top of the traction plate extends into the interior of the first slide groove through the second slide groove and is fixedly connected to the bottom of the slider.

[0009] As a preferred technical solution of this application, a placement groove is provided at the center of the mounting shell, a tray is provided inside the placement groove, a connecting strip is fixedly connected to the side surface of the tray, and the end of the connecting strip away from the tray is fixedly connected to the inner wall of the placement groove.

[0010] As a preferred technical solution of this application, the top of the mounting shell is symmetrically connected with limiting strips, and the opposite sides of the two limiting strips are respectively attached to the two sides of the clamping block.

[0011] As a preferred technical solution of this application, an auxiliary groove is provided inside the mounting shell. The auxiliary groove is connected to the first sliding groove. A rotating shaft is fixedly connected inside the auxiliary groove. A roller is rotatably connected to the side surface of the rotating shaft. The side surface of the roller is in contact with one side of the slider.

[0012] As a preferred technical solution of this application, a support frame is fixedly connected to the inner wall of the base, the top of the support frame is fitted with the bottom of the mounting plate, and fixing holes are provided on both the support frame and the mounting plate.

[0013] (III) Beneficial Effects This utility model has a simple structure and is easy to use. With the arrangement of clamping block, slider, connecting column, cylinder and traction plate, the operator only needs to operate the cylinder to make the moving end of the cylinder drive the slider to move through the traction plate. When the slider moves, the guide groove will squeeze the connecting column. The squeezed connecting column can drive the clamping block to move on the top of the mounting shell, thereby realizing the clamping of the workpiece and effectively improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic workpiece centering fixture for a CNC lathe. Figure 2 This is a schematic diagram of the installation of clamping blocks in an automatic workpiece centering fixture for CNC lathes; Figure 3 This is a cross-sectional view of the support frame in an automatic workpiece centering fixture for a CNC lathe. Figure 4 This is a cross-sectional view of the mounting shell in an automatic workpiece centering fixture for a CNC lathe. Figure 5 for Figure 3 Enlarged view of point A in the image.

[0015] In the picture: 1. Base; 2. Mounting plate; 3. Mounting shell; 4. Clamping block; 5. Slider; 6. Connecting column; 7. Guide groove; 8. Cylinder; 9. Traction plate; 10. First slide groove; 11. Second slide groove; 12. Support frame; 13. Placement groove; 14. Third slide groove; 15. Connecting strip; 16. Support plate; 17. Limiting strip; 18. Auxiliary groove; 19. Roller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides an automatic centering fixture for CNC lathe workpieces, such as... Figure 1 , Figure 2 and Figure 3 As shown, the device includes a base 1, an installation plate 2 movably connected inside the base 1, an installation shell 3 fixedly connected to the top of the installation plate 2, a clamping block 4 slidably connected to the top of the installation shell 3, a first sliding groove 10 inside the installation shell 3, a third sliding groove 14 on the top of the installation shell 3, the third sliding groove 14 communicating with the first sliding groove 10, a slider 5 slidably connected inside the first sliding groove 10, a guide groove 7 inside the slider 5, a connecting post 6 fixedly connected to the bottom of the clamping block 4, the bottom end of the connecting post 6 extending through the third sliding groove 14 into the interior of the first sliding groove 10 and inserting into the interior of the guide groove 7, a second sliding groove 11 on the installation plate 2 communicating with the first sliding groove 10, a cylinder 8 fixedly connected to the bottom of the installation plate 2, and a traction plate 9 fixedly connected to the movable end of the cylinder 8.

[0018] Several rubber strips are fixedly connected to the side surface of the clamping block 4. The top of the traction plate 9 extends into the interior of the first slide groove 10 through the second slide groove 11 and is fixedly connected to the bottom of the slider 5.

[0019] When using this fixture, the workpiece is first placed on top of the mounting shell 3. Then, the cylinder 8 is activated. The movable end of the cylinder 8 can drive the traction plate 9 to move. When the traction plate 9 moves, it can drive the slider 5 to slide inside the first slide groove 10. When the slider 5 moves, the guide groove 7 will also move. When the guide groove 7 moves, its inclined inner wall will squeeze the connecting column 6. Since the bottom of the clamping block 4 is connected to the connecting column 6, when the guide groove 7 moves, the connecting column 6 will drive the clamping block 4 to slide on the top of the mounting shell 3, thereby fixing the workpiece. At the same time, the rubber strip increases the friction between the clamping block 4 and the workpiece, improving the stability of the clamping.

[0020] Furthermore, to facilitate workers in fixing the workpiece, such as Figure 1 , Figure 2 and Figure 4 As shown, a placement groove 13 is provided at the center of the mounting shell 3. A tray 16 is provided inside the placement groove 13. A connecting strip 15 is fixedly connected to the side surface of the tray 16. The end of the connecting strip 15 away from the tray 16 is fixedly connected to the inner wall of the placement groove 13.

[0021] When fixing the workpiece, the workpiece can be directly placed on the tray 16 inside the placement groove 13. The tray 16 can provide support for the workpiece, making it easier for the clamping block 4 to hold the workpiece and fix it. The setting of the connecting strip 15 enhances the connection strength between the tray 16 and the placement groove 13, so that the tray 16 can be firmly installed inside the placement groove 13, which helps to improve the stability of the workpiece.

[0022] Furthermore, in order to improve the stability of the clamp 4 during movement, such as Figure 1 , Figure 2 and Figure 3 As shown, the top of the mounting shell 3 is symmetrically connected with limiting strips 17, and the opposite sides of the two limiting strips 17 are respectively attached to the two sides of the clamping block 4.

[0023] When the clamping block 4 moves on the top of the mounting shell 3, the limiting strip 17 can limit it on both sides, reducing the possibility of the clamping block 4 deviating during movement, thereby improving the stability of the clamping block 4 during movement. At the same time, the setting of the limiting strip 17 can also guide the movement trajectory of the clamping block 4, so that the clamping block 4 can move along the predetermined path.

[0024] In order to improve the smoothness of slider 5's movement, such as Figure 3 , Figure 4 and Figure 5As shown, an auxiliary groove 18 is provided inside the mounting shell 3. The auxiliary groove 18 is connected to the first sliding groove 10. A rotating shaft is fixedly connected inside the auxiliary groove 18. A roller 19 is rotatably connected to the side surface of the rotating shaft. The side surface of the roller 19 is in contact with one side of the slider 5.

[0025] The roller 19 is in contact with the slider 5. When the slider 5 moves, the roller 19 will rotate on the shaft due to the influence of friction, thereby assisting the slider 5 in moving. The setting of the roller 19 effectively reduces the friction when the slider 5 moves and improves the smoothness of the slider 5's movement.

[0026] It should be noted that, in order to improve the stability of mounting plate 2, such as Figure 1 , Figure 2 and Figure 3 As shown, a support frame 12 is fixedly connected to the inner wall of the base 1. The top of the support frame 12 fits against the bottom of the mounting plate 2. Fixing holes are provided on both the support frame 12 and the mounting plate 2.

[0027] When using this fixture, the base 1 needs to be installed on a CNC machine tool, and the mounting plate 2 is installed inside the base 1. Bolts can be used to pass through the fixing holes to fix the support frame 12 to the mounting plate 2, thereby effectively improving the stability of the mounting plate 2.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic workpiece centering fixture for a CNC lathe, comprising a base (1), characterized in that: The base (1) is movably connected to a mounting plate (2), and a mounting shell (3) is fixedly connected to the top of the mounting plate (2). A clamping block (4) is slidably connected to the top of the mounting shell (3). A first sliding groove (10) is provided inside the mounting shell (3), and a third sliding groove (14) is provided on the top of the mounting shell (3). The third sliding groove (14) is connected to the first sliding groove (10). A slider (5) is slidably connected inside the first sliding groove (10). The slider (5) is open inside... A guide groove (7) is provided. A connecting column (6) is fixedly connected to the bottom of the clamping block (4). The bottom end of the connecting column (6) extends to the inside of the first sliding groove (10) through the third sliding groove (14) and is inserted into the inside of the guide groove (7). A second sliding groove (11) is provided on the mounting plate (2). The second sliding groove (11) is connected to the first sliding groove (10). A cylinder (8) is fixedly connected to the bottom of the mounting plate (2). A traction plate (9) is fixedly connected to the movable end of the cylinder (8).

2. The automatic centering fixture for CNC lathe workpieces according to claim 1, characterized in that: The side surface of the clamp (4) is fixedly connected with several rubber strips, and the top of the traction plate (9) extends into the interior of the first slide groove (10) through the second slide groove (11) and is fixedly connected to the bottom of the slider (5).

3. The automatic centering fixture for CNC lathe workpieces according to claim 1, characterized in that: The mounting shell (3) has a placement groove (13) at its center. A tray (16) is provided inside the placement groove (13). A connecting strip (15) is fixedly connected to the side surface of the tray (16). The end of the connecting strip (15) away from the tray (16) is fixedly connected to the inner wall of the placement groove (13).

4. The automatic centering fixture for CNC lathe workpieces according to claim 1, characterized in that: The top of the mounting shell (3) is symmetrically connected with limiting strips (17), and the opposite sides of the two limiting strips (17) are respectively attached to the two sides of the clamping block (4).

5. The automatic centering fixture for CNC lathe workpieces according to claim 1, characterized in that: An auxiliary groove (18) is provided inside the mounting shell (3). The auxiliary groove (18) is connected to the first sliding groove (10). A rotating shaft is fixedly connected inside the auxiliary groove (18). A roller (19) is rotatably connected to the side surface of the rotating shaft. The side surface of the roller (19) is in contact with one side of the slider (5).

6. The automatic centering fixture for CNC lathe workpieces according to claim 1, characterized in that: The inner wall of the base (1) is fixedly connected to a support frame (12), the top of the support frame (12) is attached to the bottom of the mounting plate (2), and both the support frame (12) and the mounting plate (2) are provided with fixing holes.

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