A fool-proof device for a numerical control lathe fixture

Abstract

This application provides a CNC lathe fixture anti-misoperation device, relating to the technical field of fixture anti-misoperation devices. It includes a CNC lathe main frame, with a support base fixedly installed on the bottom inner wall of the main frame. A workpiece placement turntable is rotatably mounted on the top of the support base. A CNC lathe fixture adjustment clamping assembly is provided. After angle adjustment, the transmission gear rotates and engages with the tooth groove above the rack, causing the rack to slide. The rack can drive a replaceable fixture to abut against the workpiece. A sliding groove is provided on the top of the placement frame to facilitate the replacement of the replaceable fixture. A pressure sensor is installed above the force support base. The operator controls the rack to move. When the pressure sensor reading on the screen reaches a specified value, the control of the first motor can be removed. The first motor has a self-locking effect, preventing the first worm gear from rotating and ensuring that the rack does not deviate or move during workpiece processing.

Description

Technical Field

[0001] This utility model relates to the technical field of fixture error prevention devices, and in particular to a CNC lathe fixture error prevention device. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. They are mainly used for cutting and machining internal and external cylindrical surfaces, internal and external conical surfaces with arbitrary cone angles, complex rotating internal and external curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other operations. When machining long shaft workpieces, in order to prevent vibrations from affecting machining accuracy, a corresponding correction device similar to a center pin is needed to limit and correct the side of the shaft workpiece away from the chuck. However, existing correction devices require manual operation of the handwheel to drive the center pin towards one side of the workpiece when holding it in place. This can easily lead to displacement of the workpiece held in the chuck by novice operators who cannot control the effective force pressure, thus affecting subsequent machining.

[0003] In use, existing devices move the clamping fixture through the cooperation of the lead screw and the threaded sleeve during the clamping process. However, it is difficult to adjust the clamping position and force, which can easily cause the clamped workpiece to be damaged due to excessive force. Furthermore, it is difficult to finely adjust the position and angle of the workpiece to be processed, which requires the operator to use tools such as calipers to position the workpiece. Therefore, we propose a CNC lathe fixture error prevention device. Utility Model Content

[0004] In view of this, this application provides a foolproof device for CNC lathe fixtures, which solves the above technical problems to a certain extent.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A CNC lathe fixture error prevention device includes a CNC lathe main frame, a support base is fixedly installed on the bottom inner wall of the CNC lathe main frame, a workpiece placement turntable is rotatably installed on the top of the support base, a cutting waste collection drawer is slidably installed on the front side of the CNC lathe main frame, and a CNC lathe fixture adjustment and clamping assembly is provided above the support base.

[0007] Two clamp mounting boxes are fixedly installed on the top of the support base. A force-bearing support base is fixedly installed on the left side of the right clamp mounting box. A placement rack is fixedly installed on the left side of the force-bearing support base. A replaceable clamp is slidably arranged on the top of the placement rack. A pressure sensor value display screen is fixedly installed on the top of the right clamp mounting box.

[0008] Preferably, a fan is fixedly installed on the left side of the main frame of the CNC lathe, an air outlet duct is fixedly installed on the top of the fan, the output end of the air outlet duct is fixedly installed on the left side of the main frame of the CNC lathe, a negative pressure suction duct is fixedly installed on the bottom of the fan, the output end of the negative pressure suction duct is fixedly installed on the lower left side of the main frame of the CNC lathe, a filter screen is fixedly installed on the left side of the waste material collection drawer, and a workpiece clamping position adjustment and positioning component is provided above the support base.

[0009] Preferably, the CNC lathe fixture adjustment and clamping assembly further includes a rotating shaft, a transmission gear, a rack, a first worm, a first worm wheel, and a first motor. The rotating shaft is rotatably mounted on the top inner wall of the left fixture mounting box. The transmission gear is fixedly mounted on the outer side of the rotating shaft. The rack is slidably mounted on the inner side of the left fixture mounting box, and the transmission gear and rack mesh with each other. The placement bracket is fixedly mounted on the right side of the rack. The first worm is rotatably mounted on the inner side of the left fixture mounting box. The first worm wheel is fixedly mounted on the outer side of the rotating shaft, and the first worm and first worm wheel mesh with each other. The first motor is fixedly mounted on the front side of the left fixture mounting box, and the first worm is fixedly mounted on the output end of the first motor.

[0010] Preferably, the workpiece clamping position adjustment and positioning assembly includes an adjustment box, a movable shaft, a second worm gear, a second worm wheel, and a second motor. The adjustment box is fixedly installed on the top inner wall of the support base. The movable shaft is rotatably installed inside the adjustment box. The workpiece placement turntable is fixedly installed on the top of the movable shaft. The second worm gear is rotatably installed inside the adjustment box. The second worm wheel is fixedly installed outside the movable shaft. The second worm gear and the second worm wheel mesh with each other. The second motor is fixedly installed on the front side of the adjustment box. The second worm gear is fixedly installed at the output end of the second motor.

[0011] Preferably, the top of the placement rack is provided with a T-shaped sliding groove, and the top of the replaceable clamp is provided with a T-shaped block, which is slidably disposed inside the T-shaped sliding groove.

[0012] Preferably, a pressure sensor is fixedly installed on one side of the force support, and the pressure sensor value display screen is electrically connected to the pressure sensor.

[0013] Preferably, the bottom inner wall of the main frame of the CNC lathe is provided with multiple waste chip discharge holes, and the cutting waste collection drawer is connected to the waste chip discharge holes.

[0014] Preferably, the cutting waste collection drawer and the left side of the CNC lathe main frame are provided with through holes, the negative pressure suction pipe is fixedly installed inside the through hole above the CNC lathe main frame, and the filter screen is fixedly installed inside the through hole above the cutting waste collection drawer.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The present invention provides a CNC lathe fixture anti-foolproof device. After the CNC lathe fixture adjustment clamping component is set, the transmission gear rotates after the angle is adjusted and can cooperate with the tooth groove above the rack to drive the rack to slide. The rack can drive the replaceable fixture to abut against the workpiece. The top of the placement frame is provided with a sliding groove, which can facilitate the replacement of the replaceable fixture. A pressure sensor is set above the force support seat. The operator controls the rack to move. When the pressure sensor value is displayed on the screen, the control of the first motor can be removed. The first motor has a self-locking effect, which makes it difficult for the first worm to rotate. It can prevent the rack from shifting or moving during the workpiece processing, and avoid the situation where the workpiece is damaged due to the large clamping force.

[0017] (2) The present invention provides a CNC lathe fixture anti-foolproof device, which, through the workpiece clamping position adjustment and positioning component, places the workpiece to be processed above the workpiece placement turntable. The second motor can be controlled to drive the second worm gear to move. After the second worm gear meshes with the second worm wheel, it can drive the movable shaft and the workpiece placement turntable to rotate. Since the second worm gear and the second worm wheel perform deceleration after meshing, the operator can perform fine adjustment operations when adjusting the workpiece placement turntable. For example, the second motor can rotate a large number of revolutions while the workpiece placement turntable can only rotate a small range, which can avoid the problem of the operator having to adjust the workpiece angle multiple times when manually adjusting it.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a CNC lathe fixture anti-foolproof device proposed in this utility model;

[0020] Figure 2 A schematic diagram showing a three-dimensional view of the structure of the exploded portion of a CNC lathe fixture anti-foolproof device according to an embodiment of this application is provided;

[0021] Figure 3 A schematic diagram showing a three-dimensional view of a portion of the structure of the clamp mounting box and the pressure sensor numerical display screen provided according to an embodiment of this application;

[0022] Figure 4 A schematic diagram of a three-dimensional view of a portion of the structure of the placement rack and replaceable clamp provided according to an embodiment of this application is shown.

[0023] Figure label:

[0024] 1. CNC lathe fixture adjustment and clamping assembly; 2. Workpiece clamping position adjustment and positioning assembly; 3. CNC lathe main frame; 4. Support base; 5. Workpiece placement turntable; 6. Cutting waste collection drawer; 7. Fan; 8. Air outlet duct; 9. Negative pressure suction duct; 10. Filter screen;

[0025] 11. Fixture mounting box; 12. Force-bearing support base; 13. Placement rack; 14. Replaceable fixture; 15. Pressure sensor numerical display screen; 16. Rotating shaft; 17. Transmission gear; 18. Rack; 19. First worm gear; 20. First worm wheel; 21. First motor;

[0026] 22. Adjustment box; 23. Movable shaft; 24. Second worm gear; 25. Second worm wheel; 26. Second motor. Detailed Implementation

[0027] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0028] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] refer to Figure 1-4 A CNC lathe fixture anti-foolproof device includes a CNC lathe main frame 3, a support base 4 fixedly installed on the bottom inner wall of the CNC lathe main frame 3, a workpiece placement turntable 5 rotatably installed on the top of the support base 4, a cutting waste collection drawer 6 slidably installed on the front side of the CNC lathe main frame 3, and a CNC lathe fixture adjustment and clamping assembly 1 provided above the support base 4.

[0030] Two clamp mounting boxes 11 are fixedly installed on the top of the support base 4. A force-bearing support base 12 is fixedly installed on the left side of the right clamp mounting box 11. A placement rack 13 is fixedly installed on the left side of the force-bearing support base 12. A replaceable clamp 14 is slidably arranged on the top of the placement rack 13. A pressure sensor value display screen 15 is fixedly installed on the top of the right clamp mounting box 11.

[0031] In this embodiment, a fan 7 is fixedly installed on the left side of the CNC lathe main frame 3, an air outlet duct 8 is fixedly installed on the top of the fan 7, the output end of the air outlet duct 8 is fixedly installed on the left side of the CNC lathe main frame 3, a negative pressure suction duct 9 is fixedly installed at the bottom of the fan 7, the output end of the negative pressure suction duct 9 is fixedly installed on the lower left side of the CNC lathe main frame 3, a filter screen 10 is fixedly installed on the left side of the cutting waste collection drawer 6, and a workpiece clamping position adjustment and positioning component 2 is provided above the support base 4.

[0032] In this embodiment, the CNC lathe fixture adjustment and clamping assembly 1 further includes a rotating shaft 16, a transmission gear 17, a rack 18, a first worm 19, a first worm wheel 20, and a first motor 21. The rotating shaft 16 is rotatably mounted on the top inner wall of the left fixture mounting box 11. The transmission gear 17 is fixedly mounted on the outside of the rotating shaft 16. The rack 18 is slidably mounted on the inside of the left fixture mounting box 11, and the transmission gear 17 and rack 18 mesh with each other. The placement frame 13 is fixedly mounted on the right side of the rack 18. The first worm 19 is rotatably mounted on the inside of the left fixture mounting box 11. The first worm wheel 20 is fixedly mounted on the outside of the rotating shaft 16, and the first worm 19 and first worm wheel 20 mesh with each other. The first motor 21 is fixedly mounted on the front side of the left fixture mounting box 11, and the first worm 19 is fixedly mounted on the output end of the first motor 21.

[0033] In this embodiment, the workpiece clamping position adjustment and positioning assembly 2 includes an adjustment box 22, a movable shaft 23, a second worm 24, a second worm wheel 25, and a second motor 26. The adjustment box 22 is fixedly installed on the top inner wall of the support base 4. The movable shaft 23 is rotatably installed on the inner side of the adjustment box 22. The workpiece placement turntable 5 is fixedly installed on the top of the movable shaft 23. The second worm 24 is rotatably installed on the inner side of the adjustment box 22. The second worm wheel 25 is fixedly installed on the outer side of the movable shaft 23. The second worm 24 and the second worm wheel 25 mesh with each other. The second motor 26 is fixedly installed on the front side of the adjustment box 22. The second worm 24 is fixedly installed on the output end of the second motor 26. Since the second worm 24 and the second worm wheel 25 decelerate after meshing, the operator can perform fine adjustment operations when adjusting the workpiece placement turntable 5. For example, the second motor 26 can rotate a large number of revolutions while the workpiece placement turntable 5 can only rotate a small amount, which avoids the problem of the operator having to adjust the workpiece angle multiple times when manually adjusting it.

[0034] In this embodiment, the top of the placement rack 13 is provided with a T-shaped sliding groove, and the top of the replaceable clamp 14 is provided with a T-shaped block. The T-shaped block is slidably disposed inside the T-shaped sliding groove. The replaceable clamp 14 can be replaced according to workpieces of different specifications and shapes, which can make the contact area between the replaceable clamp 14 and the workpiece larger, thereby improving the clamping effect of the device.

[0035] In this embodiment, a pressure sensor is fixedly installed on one side of the force support 12, and the pressure sensor value display screen 15 is electrically connected to the pressure sensor. The operator controls the rack 18 to move. When the pressure displayed on the pressure sensor value display screen 15 reaches the specified value, the control of the first motor 21 can be removed. The first worm 19 and the first worm wheel 20 have a self-locking effect, which prevents the rack 18 from shifting or moving during the processing of the workpiece, thus avoiding damage to the workpiece caused by excessive clamping force.

[0036] In this embodiment, the bottom inner wall of the CNC lathe main frame 3 is provided with multiple waste discharge holes, and the cutting waste collection drawer 6 is connected to the waste discharge holes. During the processing, the CNC lathe main frame 3 can be sealed, and the fan 7 can be started, so that the air outlet duct 8 can blow out the airflow to clean the area above the support base 4. The negative pressure suction duct 9 can use negative pressure gas to suck the waste into the inside of the cutting waste collection drawer 6 for collection.

[0037] In this embodiment, a through hole is provided on the left side of the cutting waste collection drawer 6 and the main frame 3 of the CNC lathe. The negative pressure suction pipe 9 is fixedly installed inside the through hole above the main frame 3 of the CNC lathe, and the filter screen 10 is fixedly installed inside the through hole above the cutting waste collection drawer 6. The negative pressure suction pipe 9 can use negative pressure gas to suck the waste into the inside of the cutting waste collection drawer 6 for collection. The filter screen 10 can prevent the waste from entering the fan 7, so that the fan 7 will not be damaged during long-term use.

[0038] The specific operation is as follows: the workpiece to be processed is placed above the workpiece placement turntable 5. The second motor 26 can be controlled to drive the second worm gear 24 to move. After the second worm gear 24 meshes with the second worm wheel 25, it can drive the movable shaft 23 and the workpiece placement turntable 5 to rotate. Since the second worm gear 24 and the second worm wheel 25 perform deceleration after meshing, the operator can perform fine adjustment operations when adjusting the workpiece placement turntable 5. For example, the second motor 26 can rotate a large number of revolutions while the workpiece placement turntable 5 can only rotate a small range. This avoids the problem of the operator having to adjust the workpiece angle multiple times when manually adjusting it. After the angle adjustment is completed, the first motor 21 can be controlled to drive the first worm gear 19 to control the first worm wheel 20. After the first worm wheel 20 is subjected to force, it can drive the rotating shaft 16 and the transmission gear 17 to rotate. After the transmission gear 17 rotates, it can cooperate with the tooth groove on the rack 18 to drive the rack 18 to slide. The replaceable fixture 14 can be driven to abut against the workpiece. The top of the placement rack 13 has a sliding groove to facilitate the replacement of the replaceable fixture 14. A pressure sensor is set above the force support seat 12. The operator controls the rack 18 to move. When the pressure sensor value is displayed on the screen 15, the control of the first motor 21 can be removed. The first motor 21 has a self-locking effect, which can prevent the rack 18 from shifting or moving during the workpiece processing. The CNC lathe main frame 3 can be sealed during the processing. The fan 7 is started, and the air duct 8 blows air to clean the area above the support seat 4. The negative pressure suction pipe 9 can use negative pressure gas to suck the waste into the inside of the cutting waste collection drawer 6 for collection. The filter screen 10 makes it difficult for waste to enter the fan 7, so that the fan 7 will not be damaged during long-term use.

[0039] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foolproof device for CNC lathe fixtures, characterized in that, include: The main frame (3) of the CNC lathe has a support base (4) fixedly installed on the bottom inner wall of the main frame (3), a workpiece placement turntable (5) rotatably installed on the top of the support base (4), a cutting waste collection drawer (6) slidably installed on the front side of the main frame (3), and a CNC lathe fixture adjustment and clamping assembly (1) is provided above the support base (4). Two clamp mounting boxes (11) are fixedly installed on the top of the support base (4). A force-bearing support base (12) is fixedly installed on the left side of the right clamp mounting box (11). A placement rack (13) is fixedly installed on the left side of the force-bearing support base (12). A replaceable clamp (14) is slidably arranged on the top of the right placement rack (13). A pressure sensor value display screen (15) is fixedly installed on the top of the right clamp mounting box (11).

2. The CNC lathe fixture error prevention device according to claim 1, characterized in that, A fan (7) is fixedly installed on the left side of the main frame (3) of the CNC lathe. An air outlet pipe (8) is fixedly installed on the top of the fan (7). The output end of the air outlet pipe (8) is fixedly installed on the left side of the main frame (3) of the CNC lathe. A negative pressure suction pipe (9) is fixedly installed at the bottom of the fan (7). The output end of the negative pressure suction pipe (9) is fixedly installed on the lower left side of the main frame (3) of the CNC lathe. A filter screen (10) is fixedly installed on the left side of the cutting waste collection drawer (6). A workpiece clamping position adjustment and positioning component (2) is provided above the support base (4).

3. The CNC lathe fixture error prevention device according to claim 1, characterized in that, The CNC lathe fixture adjustment and clamping assembly (1) further includes a rotating shaft (16), a transmission gear (17), a rack (18), a first worm (19), a first worm wheel (20), and a first motor (21). The rotating shaft (16) is rotatably mounted on the top inner wall of the left fixture mounting box (11). The transmission gear (17) is fixedly mounted on the outside of the rotating shaft (16). The rack (18) is slidably mounted on the inside of the left fixture mounting box (11). The transmission gear (17) and the rack... (18) meshing, the left placement frame (13) is fixedly installed on the right side of the rack (18), the first worm (19) is rotatably installed on the inner side of the left clamp mounting box (11), the first worm wheel (20) is fixedly installed on the outer side of the rotating shaft (16), the first worm (19) and the first worm wheel (20) mesh, the first motor (21) is fixedly installed on the front side of the left clamp mounting box (11), and the first worm (19) is fixedly installed on the output end of the first motor (21).

4. The CNC lathe fixture error prevention device according to claim 2, characterized in that, The workpiece clamping position adjustment and positioning assembly (2) includes an adjustment box (22), a movable shaft (23), a second worm (24), a second worm wheel (25), and a second motor (26). The adjustment box (22) is fixedly installed on the top inner wall of the support base (4). The movable shaft (23) is rotatably installed on the inner side of the adjustment box (22). The workpiece placement turntable (5) is fixedly installed on the top of the movable shaft (23). The second worm (24) is rotatably installed on the inner side of the adjustment box (22). The second worm wheel (25) is fixedly installed on the outer side of the movable shaft (23). The second worm (24) and the second worm wheel (25) mesh with each other. The second motor (26) is fixedly installed on the front side of the adjustment box (22). The second worm (24) is fixedly installed on the output end of the second motor (26).

5. A CNC lathe fixture error prevention device according to claim 1, characterized in that, The top of the placement rack (13) is provided with a T-shaped sliding groove, and the top of the replaceable clamp (14) is provided with a T-shaped block, which is slidably disposed inside the T-shaped sliding groove.

6. A CNC lathe fixture error prevention device according to claim 1, characterized in that, A pressure sensor is fixedly installed on one side of the force support base (12), and the pressure sensor value display screen (15) is electrically connected to the pressure sensor.

7. The CNC lathe fixture error prevention device according to claim 1, characterized in that, The bottom inner wall of the main frame (3) of the CNC lathe is provided with multiple waste discharge holes, and the cutting waste collection drawer (6) is connected to the waste discharge holes.

8. A CNC lathe fixture error prevention device according to claim 2, characterized in that, The cutting waste collection drawer (6) and the left side of the CNC lathe main frame (3) are provided with through holes. The negative pressure suction pipe (9) is fixedly installed inside the through hole above the CNC lathe main frame (3). The filter screen (10) is fixedly installed inside the through hole above the cutting waste collection drawer (6).

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