Knife handle clamping force detection device of machining center tool magazine

Abstract

The invention discloses a tool holder clamping force detection device of a machining center tool magazine, and belongs to the technical field of tool holder detection. The tool holder clamping force detection device of the machining center tool magazine comprises a protection cylinder and a tool holder, a clamping and fixing mechanism is arranged in the protection cylinder, and a detection mechanism is arranged in the protection cylinder; a driving gear is matched with a driven gear, a first bevel gear drives a second bevel gear to rotate, a first pushing block drives a first extrusion block to clamp a knife handle, hydraulic oil pushes a pushing rod to enable the second extrusion block to clamp the knife handle, and it is ensured that the knife handle is stably fixed; the pushing rod is far away from the cutter handle, the cutter handle can be easily taken out, the cutter changing efficiency of detection is greatly improved, when the torsion detector drives the second pushing block to rotate, the second limiting spring is extruded, detection is finished, elastic potential energy accumulated by the second limiting spring explodes, and the torsion detector restores to the original position, so that follow-up detection work is facilitated.

Description

Technical Field

[0001] This invention relates to the field of tool holder detection technology, and in particular to a tool holder clamping force detection device for a machining center tool magazine. Background Technology

[0002] In some machining scenarios, workers check the clamping status by shaking the tool or estimate the clamping force by inserting and removing the tool holder to feel the tension. These methods are unreliable, cannot be monitored in real time, are labor-intensive and inefficient, and the measurement results are affected by human factors, resulting in poor accuracy. Therefore, a specialized detection device is needed to monitor the clamping force in real time, ensuring the stability and reliability of the detection process and avoiding the influence of vibration, shaking, and other factors on the detection results. This has become a key aspect of the stability and real-time performance of tool holder clamping force detection.

[0003] Chinese patent CN115709304B, authorized and published on December 17, 2024, discloses a telescopic adjustable T-type milling cutter and its fixing assembly. By setting the torsion between the bolt-type turntable and the threaded column, the rotational movement between the inner ring gear, the long column gear, and the gear rack is realized, thereby achieving the purpose of reinforcing the tool holder and clamping the tool holder more firmly. However, the tool holder is inconvenient to disassemble and assemble with this device, so the testing efficiency is low. Summary of the Invention

[0004] The purpose of this invention is to provide a tool holder clamping force detection device for a machining center tool magazine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tool holder clamping force detection device for a machining center tool magazine, comprising a protective cylinder and a tool holder, wherein a clamping and fixing mechanism is provided inside the protective cylinder, and a detection mechanism is provided inside the protective cylinder. The clamping and fixing mechanism includes a first fixing ring fixedly connected to the inner wall of the protective cylinder, a first motor mounted on the outer wall of the first fixing ring, a first rotating shaft fixedly connected to the output shaft end of the first motor, a drive gear fixedly connected to the outer wall of the first rotating shaft, and a first limiting bearing fixedly connected to the inner wall of the protective cylinder. A threaded rod is rotatably connected to the inner wall of the bearing, a driven gear is fixedly connected to the outer wall of the threaded rod, a first bevel gear is fixedly connected to the outer wall of one end of the threaded rod, a second limiting bearing is fixedly connected to the inner wall of the protective cylinder, a driven shaft is rotatably connected to the inner wall of the second limiting bearing, a second bevel gear is fixedly connected to the outer wall of the driven shaft, a threaded groove is formed on the outer wall of the driven shaft, a first pushing block is slidably connected to the inner wall of the protective cylinder, a first internal thread adapted to the threaded groove is formed on the inner wall of the first pushing block, and a first pressing block is fixedly connected to the outer wall of the first pushing block.

[0006] Furthermore, a first limiting ring is fixedly connected to the inner wall of the protective cylinder, a limiting groove is formed on the inner wall of the protective cylinder, a sliding block is rotatably connected to the outer wall of the threaded rod, a guide block adapted to the limiting groove is fixedly connected to the outer wall of the sliding block, a second internal thread adapted to the threaded rod is provided on the inner wall of the sliding block, a second limiting ring is fixedly connected to the inner wall of the protective cylinder, a push rod is slidably connected to the inner wall of the second limiting ring, a second fixing ring is fixedly connected to the outer wall of the push rod, a second pressing block is fixedly connected to the outer wall of one end of the push rod, a first limiting spring is fixedly connected to the outer wall of the second limiting ring, and a protective cover is slidably connected to the inner wall of the protective cylinder.

[0007] Furthermore, the detection mechanism includes a first fixing block fixedly connected to the inner wall of the protective cylinder, a second motor mounted on the outer wall of the first fixing block, a second rotating shaft fixedly connected to the output shaft end of the second motor, a fixing shell fixedly connected to the inner wall of the protective cylinder, a rotating ring rotatably connected to the inner wall of the fixing shell, a second fixing block fixedly connected to the inner wall of the fixing shell, a limit sleeve fixedly connected to the inner wall of the second fixing block, a second limit spring mounted on the inner wall of the limit sleeve, a torque detector rotatably connected to the inner wall of the fixing shell, a second push block fixedly connected to the outer wall of the torque detector, a first groove and a second groove formed on the outer wall of the torque detector, and a second limit block adapted to the second groove provided on the outer wall of one end of the second rotating shaft.

[0008] Furthermore, a guide groove is provided on the inner wall of the protective cylinder, and a first limiting block is fixedly connected to the outer wall of one end of the knife handle.

[0009] Furthermore, the driving gear and the driven gear mesh with each other, and the first bevel gear and the second bevel gear mesh with each other.

[0010] Furthermore, the guide block is slidably connected to the limiting groove via a sliding block, and the push rod is slidably connected to the protective cylinder via hydraulic oil.

[0011] Furthermore, the second fixing ring is slidably connected to the protective cylinder via a push rod, and the second fixing ring forms a telescopic structure with the second limiting ring via a first limiting spring.

[0012] Furthermore, the inner diameter of the rotating ring matches the size of the torque detector, and the second push block forms a telescopic structure with the second fixed block through the second limiting spring.

[0013] Furthermore, the driven gears are arranged symmetrically in four groups with the axis of the protective cylinder as the center, and the first pusher blocks are arranged symmetrically in four groups with the axis of the protective cylinder as the center.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) After the first limiting block on the tool holder is stably engaged with the first groove, the first motor is started. The first motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, so that the first bevel gear drives the second bevel gear to rotate, thereby causing the first push block to drive the first extrusion block to clamp the tool holder. At the same time, the sliding block slides towards the first limiting ring, so that the hydraulic oil pushes the push rod to slide, thereby causing the second extrusion block to clamp the tool holder. The first extrusion block and the second extrusion block work together to ensure that the tool holder is stably and fixedly clamped. When the tool holder is removed, the first motor reverses, the first push block moves away from the tool holder, the push rod moves away from the tool holder, and the double clamping mechanism is released synchronously. The operator only needs to pull the tool holder lightly to make it slide out along the guide groove, which greatly improves the tool changing efficiency of the inspection, and is especially suitable for large-scale continuous inspection scenarios.

[0016] (2) After the tool holder is stably fixed by the clamping mechanism, start the second motor. The clamping force of the tool holder can be detected by the torque generated between the torque detector and the tool holder. When the clamping force on the tool holder is insufficient, causing the tool holder to rotate, the second motor drives the torque detector to rotate through the second limit block, thereby causing the torque detector to drive the second push block to rotate along the inner wall of the fixed shell. At this time, the second push block presses the second limit spring in the direction of the second fixed block with the limit sleeve as the arc. After the detection is completed, turn off the second motor. The elastic potential energy accumulated by the second limit spring bursts and restores the torque detector to the initial position to facilitate subsequent detection work. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the cooperative structure of the sliding block and the threaded rod of the present invention;

[0020] Figure 4 This is a schematic diagram of the second internal thread position structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the interaction between the second fixing ring and the first limiting spring of the present invention;

[0022] Figure 6 This is a schematic diagram of the detection mechanism of the present invention;

[0023] Figure 7 This is a schematic diagram of the position structure of the second fixing block and the limiting sleeve of the present invention;

[0024] Figure 8 This is a schematic diagram of the position structure of the second limiting spring of the present invention;

[0025] Figure 9 This is a schematic diagram of the interlocking structure of the threaded groove and the first internal thread of the present invention;

[0026] Figure 10 This is a schematic diagram of the positional structure of the first and second bevel gears of the present invention;

[0027] Figure 11 This is a schematic diagram of the positional structure of the driving gear and driven gear of the present invention.

[0028] In the diagram: 1. Protective cylinder; 2. Tool holder; 3. First limiting block; 4. First fixing ring; 5. First motor; 6. First rotating shaft; 7. Driving gear; 8. Driven gear; 9. Threaded rod; 10. First limiting bearing; 11. First bevel gear; 12. Second bevel gear; 13. Driven shaft; 14. Second limiting bearing; 15. Threaded groove; 16. First pushing block; 17. First internal thread; 18. First pressing block; 19. First limiting ring; 20. Limiting groove; 21. Sliding block; 22. Guide block; 23. Second internal thread; 24. Second limiting ring; 25. Push rod; 26. Second fixing ring; 27. Second pressing block; 28. First limiting spring; 29. ​​Protective cover; 30. First fixing block; 31. Second motor; 32. Second rotating shaft; 33. Second limiting block; 34. Fixing shell; 35. Rotating ring; 36. Second fixing block; 37. Limiting sleeve; 38. Second limiting spring; 39. Torque detector; 40. Second push block; 41. First groove; 42. Second groove; 43. Guide groove. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] Please see Figure 1 - Figure 11This invention provides a technical solution: a tool holder clamping force detection device for a machining center tool magazine, comprising a protective cylinder 1 and a tool holder 2. The protective cylinder 1 has a clamping and fixing mechanism inside, and a detection mechanism inside. The clamping and fixing mechanism includes a first fixing ring 4 fixedly connected to the inner wall of the protective cylinder 1, a first motor 5 mounted on the outer wall of the first fixing ring 4, a first rotating shaft 6 fixedly connected to the output shaft end of the first motor 5, and a drive gear 7 fixedly connected to the outer wall of the first rotating shaft 6. The inner wall of the protective cylinder 1 is fixedly... A first limiting bearing 10 is fixedly connected to the inner wall of the first limiting bearing 10. A threaded rod 9 is rotatably connected to the inner wall of the first limiting bearing 10. A driven gear 8 is fixedly connected to the outer wall of the threaded rod 9. A first bevel gear 11 is fixedly connected to the outer wall of one end of the threaded rod 9. A second limiting bearing 14 is fixedly connected to the inner wall of the protective cylinder 1. A driven shaft 13 is rotatably connected to the inner wall of the second limiting bearing 14. A second bevel gear 12 is fixedly connected to the outer wall of the driven shaft 13. A threaded groove 15 is formed on the outer wall of the driven shaft 13. A second bevel gear 12 is slidably connected to the inner wall of the protective cylinder 1. A first push block 16 has a first internal thread 17 on its inner wall that matches the threaded groove 15. A first extrusion block 18 is fixedly connected to the outer wall of the first push block 16. A first limiting ring 19 is fixedly connected to the inner wall of the protective cylinder 1. A limiting groove 20 is provided on the inner wall of the protective cylinder 1. A sliding block 21 is rotatably connected to the outer wall of the threaded rod 9. A guide block 22 that matches the limiting groove 20 is fixedly connected to the outer wall of the sliding block 21. A second internal thread that matches the threaded rod 9 is provided on the inner wall of the sliding block 21. The inner wall of the protective cylinder 1 is fixedly connected to a second limiting ring 24. A push rod 25 is slidably connected to the inner wall of the second limiting ring 24. A second fixing ring 26 is fixedly connected to the outer wall of the push rod 25. A second pressing block 27 is fixedly connected to the outer wall of one end of the push rod 25. A first limiting spring 28 is fixedly connected to the outer wall of the second limiting ring 24. A protective cover 29 is slidably connected to the inner wall of the protective cylinder 1. A guide groove 43 is opened on the inner wall of the protective cylinder 1. A first limiting block 3 is fixedly connected to the outer wall of one end of the knife handle 2.

[0033] In use, slide the tool holder 2 along the guide groove 43 until the first limiting block 3 installed on the tool holder 2 slides along the first groove 41. Once the first limiting block 3 and the first groove 41 are stably engaged, open the protective cover 29 and start the first motor 5. The first motor 5 drives the first rotating shaft 6 to rotate along the inner wall of the first fixed ring 4. The rotation of the first rotating shaft 6 drives the driving gear 7 to rotate synchronously. The rotation of the driving gear 7 drives the meshing driven gear 8 to rotate synchronously. The rotation of the driven gear 8 drives the threaded rod 9 to rotate synchronously along the first limiting bearing 10. The rotation of the threaded rod 9 drives the first bevel gear 11 to rotate synchronously. Synchronous rotation: The first bevel gear 11 rotates, driving the meshing second bevel gear 12 to rotate synchronously. This causes the second bevel gear 12 to drive the driven shaft 13 to rotate synchronously along the second limit bearing 14. The driven shaft 13 rotates, causing the threaded groove 15 to rotate, thus engaging with the first internal thread 17. This allows the first push block 16 to slide along the inner wall of the protective cylinder 1. The sliding of the first push block 16 drives the first pressing block 18 to move synchronously. Four sets of first push blocks 16 and four sets of first pressing blocks 18 are provided, allowing the first pressing block 18 to clamp the tool holder 2. Simultaneously, the threaded rod 9 rotates... The sliding block 21 slides along the inner wall of the protective cylinder 1, engaging with the second internal thread 23. This sliding motion causes the guide block 22 to slide along the limiting groove 20 towards the first limiting ring 19, compressing the hydraulic oil between the sliding block 21 and the first limiting ring 19. This hydraulic oil then pushes the push rod 25 along the inner wall of the second limiting ring 24. The push rod 25 then drives the second fixing ring 26 to slide synchronously along the inner wall of the protective cylinder 1. The push rod 25 also moves the second pressing block 27, compressing the first limiting spring 28. Four sets of push rods 25 and four sets of... The second squeezing block 27 clamps the tool holder 2. The first squeezing block 18 and the second squeezing block 27 work simultaneously to ensure that the tool holder 2 is stably and fixedly clamped. When the tool holder 2 is removed, the first motor 5 reverses. The first push block 16 moves away from the tool holder 2 under the reverse rotation of the driven shaft 13, and the sliding block 21 moves away from the first limit ring 19 under the reverse rotation of the threaded rod 9. This causes the first limit spring 28 to push the push rod 25 away from the tool holder 2. The double clamping mechanism is released simultaneously. The operator only needs to pull the tool holder 2 lightly to make it slide out along the guide groove 43, which greatly improves the tool changing efficiency of the inspection and is especially suitable for large-scale continuous inspection scenarios.

[0034] The detection mechanism includes a first fixing block 30 fixedly connected to the inner wall of the protective cylinder 1, a second motor 31 installed on the outer wall of the first fixing block 30, a second rotating shaft 32 fixedly connected to the output shaft end of the second motor 31, a fixing shell 34 fixedly connected to the inner wall of the protective cylinder 1, a rotating ring 35 rotatably connected to the inner wall of the fixing shell 34, a second fixing block 36 fixedly connected to the inner wall of the fixing shell 34, a limit sleeve 37 fixedly connected to the inner wall of the second fixing block 36, a second limit spring 38 installed on the inner wall of the limit sleeve 37, a torque detector 39 rotatably connected to the inner wall of the fixing shell 34, a second push block 40 fixedly connected to the outer wall of the torque detector 39, a first groove 41 and a second groove 42 formed on the outer wall of the torque detector 39, and a second limit block 33 adapted to the second groove 42 provided on the outer wall of one end of the second rotating shaft 32.

[0035] In use, the first limiting block 3 slides into the first groove 41 and engages stably. After the tool handle 2 is stably fixed by the clamping mechanism, the second motor 31 is started. The torque detector 39 is driven by the second limiting block 33 to generate torque with the first limiting block 3 on the tool handle 2, detecting the clamping force of the tool handle 2. When the clamping force on the tool handle 2 is insufficient, causing the tool handle 2 to rotate along the protective cylinder 1, the second motor 31 causes the second rotating shaft 32 to rotate along the inner wall of the first fixing block 30. The rotation of the second rotating shaft 32 drives the second limiting block 33 to rotate synchronously. The second limiting block 33 engages with the second groove 42, so that the second... The limiting block 33 drives the torque detector 39 to rotate synchronously, thereby causing the torque detector 39 to drive the rotating ring 35 to rotate along the outer wall of the fixed shell 34. The rotation of the torque detector 39 drives the second push block 40 to rotate along the inner wall of the fixed shell 34. At this time, the rotation of the second push block 40 compresses the limiting sleeve 37 and the second limiting spring 38. The second push block 40 rotates in the direction of the second fixed block 36 with the limiting sleeve 37 as the arc. After the test is completed, the second motor 31 is turned off. The elastic potential energy accumulated by the second limiting spring 38 is released, which restores the torque detector 39 to the initial position to facilitate subsequent testing.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tool holder clamping force detection device for a machining center tool magazine, comprising a protective cylinder (1) and a tool holder (2), characterized in that: The protective cylinder (1) is provided with a clamping and fixing mechanism inside, and the protective cylinder (1) is provided with a detection mechanism inside; The clamping and fixing mechanism includes a first fixing ring (4) fixedly connected to the inner wall of the protective cylinder (1), a first motor (5) mounted on the outer wall of the first fixing ring (4), a first rotating shaft (6) fixedly connected to the output shaft end of the first motor (5), a driving gear (7) fixedly connected to the outer wall of the first rotating shaft (6), a first limiting bearing (10) fixedly connected to the inner wall of the protective cylinder (1), a threaded rod (9) rotatably connected to the inner wall of the first limiting bearing (10), a driven gear (8) fixedly connected to the outer wall of the threaded rod (9), and a first... A bevel gear (11) is provided. A second limiting bearing (14) is fixedly connected to the inner wall of the protective cylinder (1). A driven shaft (13) is rotatably connected to the inner wall of the second limiting bearing (14). A second bevel gear (12) is fixedly connected to the outer wall of the driven shaft (13). A threaded groove (15) is provided on the outer wall of the driven shaft (13). A first pushing block (16) is slidably connected to the inner wall of the protective cylinder (1). A first internal thread (17) that matches the threaded groove (15) is provided on the inner wall of the first pushing block (16). A first pressing block (18) is fixedly connected to the outer wall of the first pushing block (16).

2. The tool holder clamping force detection device for a machining center tool magazine according to claim 1, characterized in that: A first limiting ring (19) is fixedly connected to the inner wall of the protective cylinder (1). A limiting groove (20) is formed on the inner wall of the protective cylinder (1). A sliding block (21) is rotatably connected to the outer wall of the threaded rod (9). A guide block (22) adapted to the limiting groove (20) is fixedly connected to the outer wall of the sliding block (21). A second internal thread (23) adapted to the threaded rod (9) is provided on the inner wall of the sliding block (21). The protective cylinder (1) has... A second limiting ring (24) is fixedly connected to the inner wall. A push rod (25) is slidably connected to the inner wall of the second limiting ring (24). A second fixing ring (26) is fixedly connected to the outer wall of the push rod (25). A second extrusion block (27) is fixedly connected to the outer wall of one end of the push rod (25). A first limiting spring (28) is fixedly connected to the outer wall of the second limiting ring (24). A protective cover (29) is slidably connected to the inner wall of the protective cylinder (1).

3. The tool holder clamping force detection device for a machining center tool magazine according to claim 1, characterized in that: The detection mechanism includes a first fixing block (30) fixedly connected to the inner wall of the protective cylinder (1), a second motor (31) mounted on the outer wall of the first fixing block (30), a second rotating shaft (32) fixedly connected to the output shaft end of the second motor (31), a fixing shell (34) fixedly connected to the inner wall of the protective cylinder (1), a rotating ring (35) rotatably connected to the inner wall of the fixing shell (34), a second fixing block (36) fixedly connected to the inner wall of the fixing shell (34), and a rotating ring (35) fixedly connected to the inner wall of the second fixing block (36). A limiting sleeve (37) is provided, and a second limiting spring (38) is installed on the inner wall of the limiting sleeve (37). A torque detector (39) is rotatably connected to the inner wall of the fixed shell (34). A second push block (40) is fixedly connected to the outer wall of the torque detector (39). A first groove (41) is provided on the outer wall of the torque detector (39). A second groove (42) is provided on the outer wall of the second rotating shaft (32). A second limiting block (33) adapted to the second groove (42) is provided on the outer wall of one end of the second rotating shaft (32).

4. The tool holder clamping force detection device for a machining center tool magazine according to claim 1, characterized in that: The inner wall of the protective cylinder (1) is provided with a guide groove (43), and a first limiting block (3) is fixedly connected to the outer wall of one end of the knife handle (2).

5. The tool holder clamping force detection device for a machining center tool magazine according to claim 1, characterized in that: The driving gear (7) and the driven gear (8) mesh with each other, and the first bevel gear (11) and the second bevel gear (12) mesh with each other.

6. The tool holder clamping force detection device for a machining center tool magazine according to claim 2, characterized in that: The guide block (22) is slidably connected to the limiting groove (20) via the sliding block (21), and the push rod (25) is slidably connected to the protective cylinder (1) via hydraulic oil.

7. The tool holder clamping force detection device for a machining center tool magazine according to claim 2, characterized in that: The second fixing ring (26) is slidably connected to the protective cylinder (1) through the push rod (25), and the second fixing ring (26) forms a telescopic structure with the second limiting ring (24) through the first limiting spring (28).

8. The tool holder clamping force detection device for a machining center tool magazine according to claim 3, characterized in that: The inner diameter of the rotating ring (35) matches the size of the torque detector (39), and the second push block (40) forms a telescopic structure with the second limiting spring (38) and the second fixing block (36).

9. The tool holder clamping force detection device for a machining center tool magazine according to claim 1, characterized in that: The driven gear (8) is symmetrically arranged in four groups with the axis of the protective cylinder (1) as the center, and the first propulsion block (16) is symmetrically arranged in four groups with the axis of the protective cylinder (1) as the center.

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