Workpiece centering clamp

Abstract

The utility model discloses a workpiece centering fixture, which relates to the technical field of centering fixtures and comprises a fixture frame, a guide rail is arranged on the front side of the fixture frame, a connecting frame is slidably connected to the inner side of the guide rail, a threaded square sleeve is fixedly connected to the inner side of the connecting frame, and a screw rod is in threaded connection to the inner side of the threaded square sleeve. The bottom end of the lead screw is fixedly connected with a conical wheel I. A clamping plate is installed on the connecting frame installed on the inner side of the guide rail through cooperation of a protruding plate and a clamping groove, and the side face of the clamping plate is in threaded connection with the inner side of a threaded hole in the side face of the connecting frame through a fixing bolt, so that the clamping plate can be rapidly installed and detached; and two screw rods are installed on the inner sides of the connecting frames through threaded square sleeves, the bottom ends of the screw rods are connected with a driver through a first conical wheel and a second conical wheel, the two screw rods drive the two connecting frames to move towards the inner side and the outer side at the same time, and therefore centering clamping operation on a workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of centering fixtures, in particular to a workpiece centering fixture. Background Art

[0002] A fixture is a device used to secure a workpiece in the correct position during machining or testing. Broadly speaking, any device used to quickly, conveniently, and safely secure a workpiece during any process can be called a fixture.

[0003] Existing lathes mainly use chucks to clamp bar stock, while machining centers generally use V-blocks to fix and clamp bar stock. However, this method of using V-blocks to clamp parts will cause the center position of the clamp to change with the size of the workpiece. Each part needs to be calibrated and tooled, which is very inefficient and the calibration accuracy is not very high. Utility Model Content

[0004] The purpose of the utility model is to provide a workpiece centering fixture to solve the problem that the existing lathes mainly use chucks to clamp bar stock, while the machining centers generally use V-shaped blocks to fix and clamp bar stock. However, this method of using V-shaped blocks to clamp parts will cause the center position of the clamping to change with the size of the workpiece. Each part needs to be calibrated and tooled, which is very inefficient and the calibration accuracy is not very high.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece centering fixture, comprising a fixture frame, a guide rail is provided on the front of the fixture frame, a connecting frame is slidably connected to the inner side of the guide rail, the inner side of the connecting frame is fixedly connected to a threaded square sleeve, the inner side of the threaded square sleeve is threadedly connected to a screw rod, the bottom end of the screw rod is fixedly connected to a conical wheel one, the side of the conical wheel one is meshedly connected to a conical wheel two, the side of the conical wheel two is fixedly connected to a driver, the side of the connecting frame is fixedly connected to a clamping plate by a fixing bolt, the top of the clamping plate is provided with a slot, and the inner side of the slot is provided with a through slot movably connected to the fixing bolt.

[0006] As an optimal technical solution of the present invention, a side groove is opened on the side of the clamp frame, and the side of the side groove is threadedly connected with a connecting screw; the connecting screw is installed on the inner side of the side groove opened on the side of the clamp frame, and the number of the connecting screws is four. The four connecting screws can fix the clamp frame in the required position for clamping operations.

[0007] As a preferred technical solution of the present invention, a central groove is provided in the middle of the inner side of the clamp frame, and a driver is provided inside the central groove.

[0008] As a preferred technical scheme of the utility model, the side surface of the connecting frame is fixedly connected with a protruding plate, and the protruding plate is clamped in the inner side of the clamping groove.

[0009] As a preferred technical scheme of the utility model, the inner side of the clamping plate is fixedly connected with an inner plate, and the inner side of the inner plate is fixedly connected with a square plate.

[0010] As a preferred technical scheme of the utility model, the side surface of the protruding plate is provided with a threaded hole, and the inner side of the threaded hole is threadedly connected with the bottom end of the fixing bolt.

[0011] As a preferred technical scheme of the utility model, the number of the lead screws is two and the lead screws are symmetric about the center of the clamp frame, and the two lead screws are same direction lead screws; the front surface of the clamp frame is provided with a guide rail, the connecting frame installed in the inner side of the guide rail is installed with the clamping plate through the cooperation of the protruding plate and the clamping groove, and the side surface of the clamping plate is threadedly connected with the inner side of the threaded hole of the side surface of the connecting frame through the fixing bolt, the quick installation and dismounting of the clamping plate can be realized, the inner side of the connecting frame is installed with the lead screw through the threaded square sleeve, the bottom end of the lead screw is connected with the driver through the conical wheel one and the conical wheel two, and the number of the lead screws is two, the two lead screws drive the two connecting frames to move inwards and outwards at the same time, so that the center clamping operation of the workpiece is realized.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The utility model discloses a side groove is set up on the side surface of the clamp frame, and the inner side of the side groove is installed with a connecting screw, the number of the connecting screw is four, and the four connecting screws can fix the clamp frame at the required position to carry out the clamping operation.

[0014] 2. The utility model discloses that the front surface of the clamp frame is provided with a guide rail, the connecting frame installed in the inner side of the guide rail is installed with the clamping plate through the cooperation of the protruding plate and the clamping groove, and the side surface of the clamping plate is threadedly connected with the inner side of the threaded hole of the side surface of the connecting frame through the fixing bolt, the quick installation and dismounting of the clamping plate can be realized, the inner side of the connecting frame is installed with the lead screw through the threaded square sleeve, the bottom end of the lead screw is connected with the driver through the conical wheel one and the conical wheel two, and the number of the lead screws is two, the two lead screws drive the two connecting frames to move inwards and outwards at the same time, so that the center clamping operation of the workpiece is realized, the inner plate side surface provided with the inner plate inside the clamping plate is provided with the square plate, direct contact of the inner side of the clamping plate with the workpiece can be avoided, and waste material is not easy to discharge. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure front view of the utility model;

[0016] Figure 2 It is the structure partial front view of the utility model.

[0017] Figure 3 This is a structural clamping plate diagram of the utility model;

[0018] Figure 4 It is a side view of the structural connecting frame of the present utility model.

[0019] In the figure: 1. Clamp frame; 2. Side groove; 3. Connecting screw; 4. Guide rail; 5. Connecting frame; 6. Raised plate; 7. Clamping plate; 8. Fixing bolt; 9. Inner plate; 10. Square plate; 11. Slot; 12. Through groove; 13. Threaded square sleeve; 14. Screw; 15. Conical wheel 1; 16. Conical wheel 2; 17. Driver; 18. Center groove; 19. Threaded hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a workpiece centering fixture, including a fixture frame 1, a guide rail 4 is provided on the front of the fixture frame 1, and a connecting frame 5 is slidably connected to the inner side of the guide rail 4, and a threaded square sleeve 13 is fixedly connected to the inner side of the connecting frame 5, and a screw rod 14 is threadedly connected to the inner side of the threaded square sleeve 13, and the bottom end of the screw rod 14 is fixedly connected to a conical wheel 15, and the side of the conical wheel 15 is meshedly connected to the conical wheel 2 16, and the side of the conical wheel 2 16 is fixedly connected to a driver 17, and the side of the connecting frame 5 is fixedly connected to a clamping plate 7 by a fixing bolt 8, and a card slot 11 is provided on the top of the clamping plate 7, and a through slot 12 movably connected to the fixing bolt 8 is provided on the inner side of the card slot 11.

[0022] In summary, a connecting screw 3 is installed on the inner side of the side groove 2 opened on the side of the clamp frame 1. There are four connecting screws 3. The four connecting screws 3 can fix the clamp frame 1 in the required position for clamping operation. A guide rail 4 is opened on the front of the clamp frame 1. The connecting frame 5 installed on the inner side of the guide rail 4 is installed with the clamping plate 7 through the convex plate 6 and the card slot 11. The side of the clamping plate 7 is threadedly connected to the inner side of the threaded hole 19 on the side of the connecting frame 5 through the fixing bolt 8, which can realize the rapid installation and disassembly of the clamping plate 7. The screw rod 14 is installed on the inner side of the connecting frame 5 through the threaded square sleeve 13. The bottom end of the screw rod 14 is connected to the driver 17 through the conical wheel 15 and the conical wheel 2 16. , and there are two screw rods 14. The two screw rods 14 drive the two connecting frames 5 to move inward and outward at the same time, thereby realizing the centering clamping operation of the workpiece. The inner plate 9 provided on the inner side of the clamping plate 7 is provided with a square plate 10 on the side, which can avoid direct contact between the inner side of the clamping plate 7 and the workpiece, resulting in its waste material being difficult to discharge. This solves the problem that the existing lathe mainly uses a chuck to clamp the bar stock, while the machining center generally uses a V-shaped block to fix and clamp the bar stock. However, this method of using a V-shaped block to clamp the parts will cause the center position of the clamping to change with the size of the workpiece. Each part needs to be calibrated and the tool is set, the efficiency is very low, and the calibration accuracy is not very high.

[0023] A side groove 2 is opened on the side of the clamp frame 1, and a connecting screw 3 is threadedly connected to the side of the side groove 2; a connecting screw 3 is installed on the inner side of the side groove 2 opened on the side of the clamp frame 1, and the number of connecting screws 3 is four. The four connecting screws 3 can fix the clamp frame 1 in the required position for clamping operation. A center groove 18 is opened in the middle part of the inner side of the clamp frame 1, and a driver 17 is set on the inner side of the center groove 18. The side of the connecting frame 5 is fixedly connected with a convex plate 6, and the convex plate 6 is clamped on the inner side of the card slot 11.

[0024] The inner side of the clamping plate 7 is fixedly connected with an inner plate 9, and the inner side of the inner plate 9 is fixedly connected with a square plate 10; the inner plate 9 provided on the inner side of the clamping plate 7 is provided with a square plate 10 on the side to avoid direct contact between the inner side of the clamping plate 7 and the workpiece, which makes it difficult to discharge waste. A threaded hole 19 is provided on the side of the convex plate 6, and the inner side of the threaded hole 19 is threadedly connected to the bottom end of the fixing bolt 8. There are two screw rods 14 and they are symmetrical about the center of the clamp frame 1, and the two screw rods 14 are screws in the same direction; the front of the clamp frame 1 is provided with a guide rail 4, and the connecting rod 12 is installed on the inner side of the guide rail 4. The connecting frame 5 is installed with the clamping plate 7 through the convex plate 6 and the slot 11, and the side of the clamping plate 7 is threadedly connected to the inner side of the threaded hole 19 on the side of the connecting frame 5 through the fixing bolt 8, which can realize the rapid installation and disassembly of the clamping plate 7, and the inner side of the connecting frame 5 is installed with the threaded square sleeve 13. The bottom end of the screw rod 14 is connected to the driver 17 through the conical wheel 15 and the conical wheel 2 16. There are two screw rods 14, and the two screw rods 14 drive the two connecting frames 5 to move inward and outward at the same time, thereby realizing the centering clamping operation of the workpiece.

[0025] When in use, first, the connecting screw 3 is installed on the inner side of the side groove 2 opened on the side of the clamp frame 1. The number of connecting screws 3 is four, and the four connecting screws 3 can fix the clamp frame 1 in the required position for clamping operation. A guide rail 4 is provided on the front of the clamp frame 1, and the connecting frame 5 installed on the inner side of the guide rail 4 is installed with the clamping plate 7 through the convex plate 6 and the slot 11, and the side of the clamping plate 7 is threadedly connected to the threaded hole 19 on the side of the connecting frame 5 by the fixing bolt 8, which can realize quick installation and disassembly of the clamping plate 7, and the inner side of the connecting frame 5 is installed with the screw rod 14 through the threaded square sleeve 13. The bottom end of the screw rod 14 is connected to the driver 17 through the conical wheel 15 and the conical wheel 2 16, and the number of the screw rods 14 is two, and the two screw rods 14 drive the two connecting frames 5 to move inward and outward at the same time, thereby realizing the centering clamping operation of the workpiece, and the inner plate 9 provided on the inner side of the clamping plate 7 is provided with a square plate 10, which can avoid direct contact between the inner side of the clamping plate 7 and the workpiece, resulting in its waste being difficult to discharge.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece centering fixture, comprising a fixture frame (1), characterized in that: The front of the clamp frame (1) is provided with a guide rail (4), the inner side of the guide rail (4) is slidably connected to a connecting frame (5), the inner side of the connecting frame (5) is fixedly connected to a threaded square sleeve (13), the inner side of the threaded square sleeve (13) is threadedly connected to a screw rod (14), the bottom end of the screw rod (14) is fixedly connected to a conical wheel 1 (15), the side of the conical wheel 1 (15) is meshedly connected to a conical wheel 2 (16), the side of the conical wheel 2 (16) is fixedly connected to a driver (17), the side of the connecting frame (5) is fixedly connected to a clamping plate (7) through a fixing bolt (8), the top of the clamping plate (7) is provided with a slot (11), and the inner side of the slot (11) is provided with a through slot (12) movably connected to the fixing bolt (8).

2. A workpiece centering fixture according to claim 1, characterized in that: A side groove (2) is provided on the side of the clamp frame (1), and a connecting screw (3) is threadedly connected to the side of the side groove (2).

3. The workpiece centering fixture according to claim 1, characterized in that: A central groove (18) is provided in the middle of the inner side of the clamp frame (1), and a driver (17) is provided inside the central groove (18).

4. A workpiece centering fixture according to claim 1, characterized in that: A convex plate (6) is fixedly connected to the side surface of the connecting frame (5), and the convex plate (6) is clamped on the inner side of the clamping slot (11).

5. The workpiece centering fixture according to claim 1, characterized in that: The inner side of the clamping plate (7) is fixedly connected to an inner plate (9), and the inner side of the inner plate (9) is fixedly connected to a square plate (10).

6. A workpiece centering fixture according to claim 4, characterized in that: A threaded hole (19) is provided on the side of the convex plate (6), and the inner side of the threaded hole (19) is threadedly connected to the bottom end of the fixing bolt (8).

7. The workpiece centering fixture according to claim 1, characterized in that: The number of the screw rods (14) is two and they are symmetrical about the center of the clamp frame (1), and the two screw rods (14) are screw rods in the same direction.

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