Clamping force detection device for tool magazine of high-precision numerical control machine tool

Abstract

The utility model provides a clamping force detection device for a tool magazine of a high-precision numerical control machine tool. The clamping force detection device comprises a tension handle, a chest expander main body, a chest expander conical lining, a gauge shaped like a Chinese character'wang ', a limiting locking device and an adjusting nut. According to the utility model, the cone-shaped lining of the spring exerciser can move up and down along the axis direction through the adjusting nut at the top end, and the clamping force between the spring chuck of the cone-shaped lining of the spring exerciser and the gauge shaped like the Chinese character'wang 'can be changed along with the up-down moving process; the clamping force can be directly and visually adjusted by adjusting scale marks on a dial on the surface of the nut. The lower part of the gauge shaped like the Chinese character'wang 'is connected with a to-be- Through the device, whether the clamping force of the tool magazine of the high-precision numerical control machine tool is qualified or not can be quickly, simply and directly judged, powerful support is provided for quick, efficient and high-quality production, and an effective basis is provided for technicians.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a high-precision CNC machine tool magazine clamping force detection device. Background Technology

[0002] High-precision printed circuit boards (PCBs), as carriers of electronic components, are essential for the rapid and stable development of modern technology and a fundamental guarantee for the realization of all scientific and technological achievements. With increasingly fierce market competition, those who can provide customers with better products, technologies, and services faster, better, and cheaper will seize a larger market share and strategic advantage in the international arena, significantly enhancing their core competitiveness. The safe, stable, and efficient operation of high-precision CNC machine tools specifically designed for PCBs is crucial for continuous high-quality production. In actual production, insufficient clamping force in the tool magazine often leads to excessive coaxiality deviation between the tools in the magazine and the CNC machine tool's servo spindle axis. This causes the servo spindle to frequently experience spindle-pin collisions when gripping tools, resulting in varying degrees of damage to equipment, products, and tools. Therefore, it is necessary to regularly inspect, adjust, and replace the clamping force of the CNC machine tool's tool magazine to ensure a stable and orderly CNC machining process. Existing solutions use spring scales for detection, but this method is susceptible to human error, resulting in poor accuracy, low efficiency, high cost, and difficulty in management. Utility Model Content

[0003] To address the aforementioned technical problems of low efficiency, poor accuracy, high cost, and difficulty in management associated with conventional control methods for CNC machine tools specifically designed for circuit boards, this invention provides a high-precision CNC machine tool magazine clamping force detection device. This device effectively improves detection efficiency and results, ensuring product quality. The technical means employed in this invention are as follows:

[0004] A high-precision CNC machine tool magazine clamping force detection device includes: a tension handle, a tensioner body, a tensioner conical liner, a king-shaped gauge, a limit locking device, and an adjusting nut. The tension handle is connected to the top of the tensioner body. The tensioner body has a hollow cavity in the middle. The tensioner conical liner is placed in the hollow cavity. The adjusting nut is engaged with the upper end of the tensioner conical liner that protrudes from the hollow cavity. One end of the king-shaped gauge is connected to the tensioner conical liner, and the other end is connected to the component to be tested. The limit locking device is installed at the lower end of the tensioner body and is used to limit the king-shaped gauge.

[0005] Furthermore, the conical inner liner of the tensioner consists of two parts: the top part is engaged with the tensioner body, and the bottom part is a spring collet. The king-shaped gauge is connected inside the spring collet. The conical inner liner of the tensioner moves up and down along the axis and generates a clamping force on the king-shaped gauge.

[0006] Furthermore, the inner side of the pull handle is provided with a crossbeam, the end of the crossbeam is connected to the positioning pointer sleeve through a shaft pin, the end of the positioning pointer sleeve is provided with a positioning pointer connecting rod, one end of the positioning pointer connecting rod is connected to the positioning pointer sleeve through a positioning pointer spring, and the other end is connected to a positioning pointer;

[0007] The upper surface of the adjusting nut has a laser-etched scale and multiple spherical positioning grooves. The scale is composed of several scale lines evenly distributed around the circumference, and the multiple spherical positioning grooves are evenly distributed inside the scale lines along the circumferential direction.

[0008] The positioning pointer is used to contact and cooperate with the spherical positioning groove.

[0009] Furthermore, the end of the positioning pointer is spherical, the number of spherical positioning grooves is 60-180, the depth of the scale line is 30-50μm, and the width is 0.10mm.

[0010] Furthermore, the upper flange of the tensioner body has mounting holes on both sides, and the two sides of the tension handle are inserted into the mounting holes and fastened by the handle fastening bolts.

[0011] Furthermore, the hollow cavity of the tensioner body is tapered, with a taper range of 5-15 degrees.

[0012] Furthermore, the tensioner's conical inner liner has a through-cavity in the middle, and the inner diameter of the through-cavity is 3.175mm.

[0013] Furthermore, the outer surface of the adjusting nut is designed with a rolled pattern, and the inner surface of the adjusting nut is provided with a threaded hole. The inner wall of the threaded hole has fine-tooth precision threads, and the top end of the tapered inner liner of the tensioner is threadedly connected to the threaded hole.

[0014] Furthermore, a washer is provided between the lower end face of the adjusting nut and the upper end face of the tensioner body.

[0015] Furthermore, the limiting locking device has an L-shaped design.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The high-precision CNC machine tool magazine clamping force detection device provided by this utility model has a compact structure, small size, high efficiency, and is more than 20 times more efficient than conventional testing methods. It also has high accuracy, with an accuracy rate close to 100%, which significantly improves the machine tool utilization rate.

[0018] 2. The high-precision CNC machine tool magazine clamping force detection device provided by this utility model utilizes principles of mechanics, mechanicals, tolerance matching, and linkage transmission. By rotating the knob at the top of the device, the conical inner liner of the tensioner can move up and down along the axis. The conical inner liner consists of two parts: the top part mates with the tensioner body, and the lower part is a spring collet containing a king-shaped gauge. During the up-and-down movement along the axis, the tensioner body generates a radial reaction force on the conical inner liner. This force causes the conical inner liner to exert a certain clamping force on the test gauge. By adjustment, the clamping force can reach a preset requirement. Then, the clamping force of the CNC machine tool magazine is tested according to the processing product technical standards and customer quality requirements.

[0019] Based on the above reasons, this utility model can be widely promoted in fields such as clamping force detection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an isometric schematic diagram of the device of this utility model.

[0022] Figure 2 This is a cross-sectional view of the device of this utility model.

[0023] Figure 3 This is a top view of the adjusting nut of this utility model.

[0024] Figure 4 for Figure 3 Sectional view at point AA.

[0025] In the diagram: 1. Pull handle; 2. Puller body; 3. Handle fastening bolt; 4. Puller conical inner liner; 5. King-shaped gauge; 6. Test base; 7. Limit locking device; 8. Washer; 9. Adjusting nut; 10. Positioning pointer; 11. Positioning pointer spring; 12. Shaft pin; 13. Positioning pointer sleeve; 14. Positioning pointer connecting rod; 15. Screw hole; 16. Spherical positioning groove; 17. Scale line. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0027] This utility model provides a high-precision CNC machine tool magazine clamping force detection device, which belongs to the detection tool in the manufacturing process of electronic circuit products, and specifically relates to the detection and control technology of clamping force of high-precision CNC machine tool magazine in the manufacturing process of high-precision printed circuit boards.

[0028] See attached document Figure 1-4 The high-precision CNC machine tool magazine clamping force detection device of this utility model mainly includes a tension handle 1, a tensioner body 2, a handle fastening bolt 3, a conical inner liner of the tensioner 4, a king-shaped gauge 5, a limit locking device 7, a washer 8, an adjusting nut 9, a positioning pointer 10, a positioning pointer spring 11, a shaft pin 12, a positioning pointer sleeve 13, a positioning pointer connecting rod 14, a screw hole 15, a spherical positioning groove 16, and scale lines 17, etc.

[0029] The tensioner body 2 consists of three functional areas, including the main body, which has a hollow cavity in the middle and a flange on each side. The hollow cavity of the tensioner body 2 is tapered, with a taper range of 5-15 degrees.

[0030] A tension handle 1 is provided on the top of the tensioner body 2; the tension handle 1 is connected to the tensioner body 2 by a handle fastening bolt 3. Two mounting holes are evenly distributed along the diameter of the upper flange of the tensioner body 2 for connecting to the tension handle 1. The two sides of the tension handle 1 are inserted into the mounting holes and fastened by the handle fastening bolt 3.

[0031] The conical inner liner 4 of the tensioner is placed inside the hollow cavity, and the adjusting nut 9 is connected to the upper end of the conical inner liner 4 that protrudes from the hollow cavity. The conical inner liner 4 consists of two parts: the top part mates with the tensioner body 2, and the lower part is a spring collet. The middle part of the conical inner liner 4 is designed as a through-cavity, and the lower half of the through-cavity is the spring collet. The inner diameter of the through-cavity is 3.175mm. Inside the spring collet is a vertically movable king-shaped gauge 5. One end of the king-shaped gauge 5 mates with the spring collet, and the other end is connected to the test base 6 of the tool magazine of the CNC machine tool to be tested. The clamping force between the king-shaped gauge 5 and the conical inner liner 4 can be adjusted by the adjusting nut 9.

[0032] The upper surface of the adjusting nut 9 has a laser-etched scale, which consists of several scale lines 17. The depth of each scale line 17 is 30-50 μm, and the width is 0.10 mm. A spherical positioning groove 16 is located at the inner end of each scale line 17. These spherical positioning grooves 16 are evenly distributed circumferentially around the center of the adjusting nut 9, with a quantity of 60-180 grooves. The adjusting nut 9 has a threaded hole 15 inside, with fine-pitch precision threads on the inner wall and a rolled pattern design on the outside. The top of the tapered inner liner 4 of the tensioner is threaded into the threaded hole 15. A washer 8 is provided between the lower surface of the adjusting nut 9 and the upper surface of the tensioner body 2.

[0033] A crossbeam is provided on the inner side wall of the pull handle 1. The end of the crossbeam is connected to the positioning pointer sleeve 13 via a pin 12. The lower end of the positioning pointer sleeve 13 is connected to a positioning pointer connecting rod 14 with a positioning pointer 10. One end of the positioning pointer connecting rod 14 is connected to the positioning pointer sleeve 13 via a positioning pointer spring 11, and the other end is connected to the positioning pointer 10. The end of the positioning pointer 10 is spherical. The positioning pointer connecting rod 14 and the positioning pointer 10 can move up and down. The positioning pointer 10 can be used in conjunction with the pre-designed spherical positioning groove 16 and scale line 17 on the upper surface of the adjusting nut 9. There is a certain interaction force between the positioning pointer 10 and the spherical positioning groove 16. When the adjusting nut 9 rotates around the precision screw hole 15, it can generate a slight vibration and sound, which is easy for the operator to identify.

[0034] A limiting locking device 7 is provided at the lower end of the tensioner body 2. The limiting locking device 7 is L-shaped and can ensure that the king-shaped gauge 5 can move up and down within a limited range inside the spring collet. The limiting locking device 7 can be an L-shaped rod, with one L-shaped bent end located outside the tensioner body 2 and the other straight end inserted into the king-shaped gauge 5 inside the spring collet.

[0035] Before actual use, first check that all functional components of the device are intact and functioning effectively. The specific operating steps are as follows: Place the king-shaped gauge 5 inside the conical inner liner 4 of the tensioner, and then rotate the adjusting nut 9 clockwise or counterclockwise. The bonding force between the conical inner liner 4 of the tensioner and the king-shaped gauge 5 can be adjusted through the spherical positioning groove 16 and the scale on its surface. The bonding force increases when rotated clockwise and decreases when rotated counterclockwise. After the bonding force is set, adjust the limit locking device 7 to an appropriate position to prevent the king-shaped gauge 5 from falling off or entering the spring collet during use. When measuring the clamping force of the tool magazine, place the king-shaped gauge 5 in the test base 6 of the tool magazine, and then hold the tension handle 1 with your hand to observe the up and down movement of the test base 6. This allows for a simple, intuitive, accurate, and quick determination of whether the clamping force of the tool magazine meets the process requirements.

[0036] This invention utilizes an adjusting nut at the top of the tool magazine clamping force detection device to move the conical inner liner of the tensioner up and down along its axial direction. During this movement, the clamping force between the spring collet of the conical inner liner and the king-shaped gauge changes accordingly. The clamping force can be adjusted visually via the scale lines on the adjusting nut's surface. The lower part of the king-shaped gauge is connected to the component being tested. This device allows for a quick, simple, and direct determination of whether the clamping force of a high-precision CNC machine tool tool magazine is within acceptable limits, providing strong support for rapid, efficient, and high-quality production, and offering effective guidance for technical personnel.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision CNC machine tool tool magazine clamping force detection device, characterized in that, include: The pull handle (1), the puller body (2), the puller conical liner (4), the king-shaped gauge (5), the limiting locking device (7), and the adjusting nut (9) are provided. The pull handle (1) is connected to the top of the puller body (2). The puller body (2) has a hollow cavity in the middle. The puller conical liner (4) is placed in the hollow cavity. The adjusting nut (9) is connected to the upper end of the puller conical liner (4) that protrudes from the hollow cavity. One end of the king-shaped gauge (5) is connected to the puller conical liner (4), and the other end is connected to the component to be tested. The limiting locking device (7) is installed at the lower end of the puller body (2) and is used to limit the king-shaped gauge (5).

2. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The conical inner liner (4) of the tensioner consists of two parts: the top part is engaged with the tensioner body (2), and the bottom part is a spring clamp. The king-shaped gauge (5) is connected inside the spring clamp. The conical inner liner (4) of the tensioner moves up and down along the axis and generates a clamping force on the king-shaped gauge (5).

3. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The inner side of the pull handle (1) is provided with a crossbeam. The end of the crossbeam is connected to the positioning pointer sleeve (13) through a shaft pin (12). The end of the positioning pointer sleeve (13) is provided with a positioning pointer connecting rod (14). One end of the positioning pointer connecting rod (14) is connected to the positioning pointer sleeve (13) through a positioning pointer spring (11), and the other end is connected to a positioning pointer (10). The upper end face of the adjusting nut (9) has a laser-etched scale and multiple spherical positioning grooves (16). The scale is composed of several scale lines (17) evenly distributed in the circumferential direction. The multiple spherical positioning grooves (16) are evenly distributed in the circumferential direction inside the scale lines (17). The positioning pointer (10) is used to contact and connect with the spherical positioning groove (16).

4. The high-precision CNC machine tool magazine clamping force detection device according to claim 3, characterized in that, The end of the positioning pointer (10) is spherical, the number of spherical positioning grooves (16) is 60-180, the depth of the scale line (17) is 30-50μm, and the width is 0.10mm.

5. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The upper flange of the tensioner body (2) has mounting holes on both sides. The two sides of the tension handle (1) are inserted into the mounting holes and fastened by the handle fastening bolts (3).

6. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The hollow cavity of the tensioner body (2) is tapered, with a taper range of 5-15 degrees.

7. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The conical inner liner (4) of the tensioner has a through cavity in the middle, and the inner diameter of the through cavity is 3.175mm.

8. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The outer surface of the adjusting nut (9) is designed with a rolled pattern, and the inner surface of the adjusting nut (9) is provided with a screw hole (15). The inner wall of the screw hole (15) has a fine-tooth precision thread, and the top end of the tensioner tapered inner liner (4) is threadedly connected to the screw hole (15).

9. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, A washer (8) is provided between the lower end face of the adjusting nut (9) and the upper end face of the tensioner body (2).

10. The high-precision CNC machine tool magazine clamping force detection device according to claim 1, characterized in that, The limiting locking device (7) is an L-shaped design.

Images