Numerical control grinding machine positioning clamp

Abstract

The utility model relates to the technical field of clamps, and discloses a numerical control grinding machine positioning clamp which comprises a base, a baffle and a fixing block are integrally arranged at the two ends of the top of the base respectively, a positioning cylinder is arranged in the middle of the fixing block in a sliding mode, a threaded rod is connected to the interior of the positioning cylinder in a threaded mode, and a rotating disc is fixedly arranged at one end of the threaded rod. A pressing disc is installed at the other end of the threaded rod through a connecting bolt, a first sliding groove is formed in the top of the positioning cylinder, a plurality of second sliding grooves are formed in one side of the first sliding groove, a positioning bolt is installed in the middle of the top end of the fixing block, and the bottom end of the positioning bolt is attached to the bottom end of the first sliding groove. According to the fixing device, the positioning cylinder is pushed to slide in the through hole, the positioning cylinder is limited by the positioning bolt installed at the top of the fixing block during sliding, the positioning cylinder is prevented from rotating, and the positioning cylinder is rotated to clamp the positioning bolt in the second sliding groove, so that the positioning cylinder is fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a positioning jig for a numerical control grinding machine. Background Technique

[0002] A numerical control grinding machine is a machine tool that grinds the surface of a workpiece using a grinding tool through numerical control technology. Most grinding machines use a high-speed rotating grinding wheel for grinding, and a few use other grinding tools such as oilstones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machines, abrasive belt grinding machines, grinding machines, and polishing machines. During the processing of a numerical control grinding machine, in order to ensure the machining accuracy and surface quality of the workpiece, a positioning jig is required to accurately position and fix the workpiece.

[0003] Traditional positioning jigs often use telescopic devices such as air cylinders to directly clamp the workpiece by pushing the clamping plate. However, the clamping process of such telescopic devices on the workpiece may be relatively fast, which may cause damage to the surface of the workpiece. At the same time, it is difficult to adjust the clamping degree of the telescopic device on the workpiece, lacking a certain degree of flexibility.

[0004] Therefore, those skilled in the art have provided a positioning jig for a numerical control grinding machine to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a positioning jig for a numerical control grinding machine is proposed. First, by pushing the positioning cylinder to slide inside the through hole, while sliding, the positioning bolt installed on the top of the fixed block limits the positioning cylinder to prevent it from rotating. By rotating the positioning cylinder, the positioning bolt is stuck inside the second chute to fix the positioning cylinder. Since there are multiple second chutes on one side of the first chute, the position of the positioning cylinder can be adjusted flexibly to make the pressure plate close to the workpiece. Then, by rotating the turntable to push the threaded rod to move and clamp the workpiece. By dividing the clamping process into two parts, the risk of damage to the workpiece caused by rapid alignment and clamping is avoided. By controlling the movement of the pressure plate by rotating the turntable, the clamping degree can be controlled more precisely, improving the flexibility of clamping.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A positioning fixture for a numerically controlled grinding machine, comprising a base, with a baffle and a fixing block integrally provided at both ends of the top of the base. A positioning cylinder is slidably provided in the middle of the fixing block. A threaded rod is threadedly connected inside the positioning cylinder. One end of the threaded rod is fixedly provided with a turntable, and the other end of the threaded rod is installed with a pressing plate through a connecting bolt. A first chute is opened at the top of the positioning cylinder, and a plurality of second chutes are opened on one side of the first chute. A positioning bolt is installed in the middle of the top end of the fixing block, and the bottom end of the positioning bolt is in contact with the bottom end of the first chute;

[0008] Through the above technical solution, by pushing the positioning cylinder to slide inside the through hole, while sliding, the positioning bolt installed on the top of the fixing block limits the positioning cylinder to prevent it from rotating. By rotating the positioning cylinder, the positioning bolt is stuck inside the second chute to fix the positioning cylinder. Since there are a plurality of second chutes on one side of the first chute, the position of the positioning cylinder can be adjusted flexibly to make the pressing plate close to the workpiece. Then, by rotating the turntable to push the threaded rod to move to clamp the workpiece. By dividing the clamping process into two parts, the risk of damage to the workpiece caused by rapid alignment and clamping is avoided. By controlling the movement of the pressing plate by rotating the turntable, the clamping degree can be controlled more precisely, improving the flexibility of clamping.

[0009] Furthermore, a positioning hole is opened in the middle of the top of the fixing block;

[0010] Through the above technical solution, by opening a positioning hole in the middle of the top of the fixing block, it is convenient for the installation and disassembly of the positioning bolt.

[0011] Furthermore, a through hole is opened in the middle of the fixing block;

[0012] Through the above technical solution, by opening a through hole in the middle of the fixing block, it is convenient for the sliding of the positioning cylinder.

[0013] Furthermore, a fixing rod is integrally provided at one end of the positioning cylinder;

[0014] Through the above technical solution, by integrally providing a fixing rod at one end of the positioning cylinder, it is convenient to rotate the positioning cylinder.

[0015] Furthermore, mounting holes are opened at the four corners of the base;

[0016] Through the above technical solution, by opening mounting holes at the four corners of the base, it is convenient to install the base.

[0017] Furthermore, the bottom end of the positioning bolt is designed to be arc-shaped;

[0018] Through the above technical solution, designing the bottom end of the positioning bolt to be arc-shaped facilitates the sliding of the positioning cylinder.

[0019] The utility model has the following beneficial effects:

[0020] 1. For a positioning fixture of a numerical control grinding machine proposed by the utility model, first, the positioning cylinder is pushed to slide inside the through hole. While sliding, the positioning bolt installed on the top of the fixed block limits the positioning cylinder to prevent it from rotating. The positioning cylinder is fixed by rotating the positioning cylinder to make the positioning bolt stuck inside the second chute. Since there are multiple second chutes on one side of the first chute, the position of the positioning cylinder can be adjusted flexibly to make the pressure plate close to the workpiece. Then, by rotating the turntable to push the threaded rod to move, the workpiece is clamped. By dividing the clamping process into two parts, the risk of damage to the workpiece caused by rapid alignment and clamping is avoided. The way of controlling the movement of the pressure plate by rotating the turntable can control the clamping degree more precisely and improve the flexibility of clamping.

[0021] 2. For a positioning fixture of a numerical control grinding machine proposed by the utility model, the limiting structure of the positioning cylinder is designed as a detachable positioning bolt, and the pressure plate is installed at the clamping end of the threaded rod through a connecting bolt, so that the whole fixture can be quickly disassembled, facilitating later maintenance and replacement work. Description of the Drawings

[0022] Figure 1 Isometric view of a positioning fixture of a numerical control grinding machine proposed by the utility model;

[0023] Figure 2 Cross-sectional view of a positioning fixture of a numerical control grinding machine proposed by the utility model;

[0024] Figure 3 Isometric view of the base of a positioning fixture of a numerical control grinding machine proposed by the utility model;

[0025] Figure 4 Isometric view of the positioning structure of a positioning fixture of a numerical control grinding machine proposed by the utility model;

[0026] Figure 5 Isometric view of the threaded rod of a positioning fixture of a numerical control grinding machine proposed by the utility model.

[0027] Legend:

[0028] 1. Base; 2. Mounting hole; 3. Baffle; 4. Fixed block; 5. Through hole; 6. Positioning hole; 7. Positioning bolt; 8. Positioning cylinder; 9. Threaded rod; 10. Turntable; 11. Pressure plate; 12. Fixed rod; 13. First chute; 14. Second chute; 15. Connecting bolt. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Referring to Figures 1-5 , an embodiment provided by the present invention: a positioning fixture for a numerical control grinding machine, including a base 1. At both ends of the top of the base 1, a baffle 3 and a fixing block 4 are integrally provided respectively. A positioning cylinder 8 is slidably arranged in the middle of the fixing block 4. A threaded rod 9 is threadedly connected inside the positioning cylinder 8. One end of the threaded rod 9 is fixedly provided with a turntable 10. The other end of the threaded rod 9 is installed with a pressure plate 11 through a connecting bolt 15. A first chute 13 is opened at the top of the positioning cylinder 8. A plurality of second chutes 14 are opened on one side of the first chute 13. A positioning bolt 7 is installed in the middle of the top end of the fixing block 4. The bottom end of the positioning bolt 7 is in contact with the bottom end of the first chute 13. By pushing the positioning cylinder 8 to slide inside the through hole 5, while sliding, the positioning bolt 7 installed on the top of the fixing block 4 limits the positioning cylinder 8 to prevent the positioning cylinder 8 from rotating. By rotating the positioning cylinder 8, the positioning bolt 7 is stuck inside the second chute 14 to fix the positioning cylinder 8. Since a plurality of second chutes 14 are opened on one side of the first chute 13, the position of the positioning cylinder 8 can be flexibly adjusted to make the pressure plate 11 close to the workpiece. Then, by rotating the turntable 10, the threaded rod 9 is pushed to move to clamp the workpiece. By dividing the clamping process into two parts, the risk of damaging the workpiece caused by rapid alignment and clamping is avoided. The method of controlling the movement of the pressure plate 11 by rotating the turntable 10 can more precisely control the clamping degree and improve the flexibility of clamping.

[0031] A positioning hole 6 is opened in the middle of the top of the fixing block 4. By opening a positioning hole 6 in the middle of the top of the fixing block 4, it is convenient for the installation and disassembly of the positioning bolt 7. A through hole 5 is opened in the middle of the fixing block 4. By opening a through hole 5 in the middle of the fixing block 4, it is convenient for the sliding of the positioning cylinder 8. A fixing rod 12 is integrally provided at one end of the positioning cylinder 8. By integrally providing a fixing rod 12 at one end of the positioning cylinder 8, it is convenient to rotate the positioning cylinder 8. Installation holes 2 are opened at the four corners of the base 1. By opening installation holes 2 at the four corners of the base 1, it is convenient to install the base 1. The bottom end of the positioning bolt 7 is designed to be arc-shaped. Designing the bottom end of the positioning bolt 7 to be arc-shaped is convenient for the sliding of the positioning cylinder 8.

[0032] Working principle: First, slide the positioning cylinder 8 inside the through hole 5. While sliding, the positioning bolt 7 installed on the top of the fixed block 4 limits the positioning cylinder 8 to prevent it from rotating. Fix the positioning cylinder 8 by rotating the positioning cylinder 8 to make the positioning bolt 7 stuck inside the second chute 14. Since there are multiple second chutes 14 on one side of the first chute 13, the position of the positioning cylinder 8 can be adjusted flexibly to make the pressure plate 11 close to the workpiece. Then, rotate the turntable 10 to push the threaded rod 9 to move and clamp the workpiece. By dividing the clamping process into two parts, the risk of damage to the workpiece caused by rapid alignment and clamping is avoided. The method of controlling the movement of the pressure plate 11 by rotating the turntable 10 can more precisely control the clamping degree and improve the flexibility of clamping. By designing the limiting structure of the positioning cylinder 8 as a detachable positioning bolt 7 and installing the pressure plate 11 at the clamping end of the threaded rod 9 through the connecting bolt 15, the entire fixture can be quickly disassembled, facilitating later maintenance and replacement work.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning fixture for a CNC grinding machine, comprising a base (1), characterized in that: The top ends of the base (1) are respectively provided with a baffle (3) and a fixed block (4), a positioning cylinder (8) is slidably provided in the middle of the fixed block (4), the internal thread of the positioning cylinder (8) is connected with a threaded rod (9), a rotating disk (10) is fixedly provided at one end of the threaded rod (9), and a pressure plate (11) is installed at the other end of the threaded rod (9) through a connecting bolt (15), a first sliding groove (13) is provided at the top of the positioning cylinder (8), and a plurality of second sliding grooves (14) are provided on one side of the first sliding groove (13), a positioning bolt (7) is installed in the middle of the top end of the fixed block (4), and the bottom end of the positioning bolt (7) is in contact with the bottom end of the first sliding groove (13).

2. The positioning fixture for a CNC grinding machine according to claim 1, characterized in that: A positioning hole (6) is provided in the middle of the top of the fixing block (4).

3. The positioning fixture for a CNC grinding machine according to claim 1, characterized in that: A through hole (5) is provided in the middle of the fixing block (4).

4. The positioning fixture for a CNC grinding machine according to claim 1, characterized in that: A fixing rod (12) is integrally provided at one end of the positioning cylinder (8).

5. The positioning fixture for a CNC grinding machine according to claim 1, characterized in that: The four corners of the base (1) are each provided with mounting holes (2).

6. The positioning fixture for a CNC grinding machine according to claim 1, characterized in that: The bottom end of the positioning bolt (7) is designed to be in an arc shape.

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