A CNC slot milling machine capable of automatic material conveying and automatic detection

Abstract

The present invention discloses a CNC slot milling machine capable of automatic material conveying and automatic detection, and relates to the technical field of slot milling machines. The present invention comprises a milling cutter and a crossbeam mounted on a machine body, and also comprises: an automatic conveying unit, the automatic conveying unit is used to automatically convey the workpiece during the slot milling process, the automatic conveying unit comprises a fixed table slidably mounted in the crossbeam, two slide grooves are provided on the inner wall of the crossbeam, and sliders are slidably mounted in the two slide grooves, a push plate is fixedly mounted between the two sliders, and an X-axis adjustment screw connected to one of the sliders by thread is rotatably mounted on the crossbeam. The advantage is that the present invention utilizes the change in resistance between the milling cutter and the workpiece during the slot milling process and the change in the elastic potential energy of the tension spring, and can automatically complete the material conveying process during the slot milling process and the slot type detection process after the slot milling is completed, without the need for manual processing by the staff, which greatly improves the slot milling effect and work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of slot milling machines, and in particular to a numerically controlled slot milling machine capable of automatically conveying materials and automatically detecting. Background Art

[0002] In the production process of some iron back plates and plastic products, grooving is often required due to subsequent installation needs and other factors, so a slot milling machine is needed to operate. In actual operation, a vertical turret milling machine is generally used, which can be widely used for processing planes, inclined surfaces of any angle, milling keyways, grooves, and can also be turned, reamed, and bored.

[0003] When the existing vertical turret milling machine performs groove milling processing, the workpiece feeding material needs to be operated by manually rotating the hand wheel. Since the milling speed of the milling cutter for workpieces of different materials is different, the staff needs to apply different feeding speeds to different workpieces. If the operator is not skilled, feeding too fast may easily cause damage to the milling cutter, and feeding too slowly will reduce the groove milling rate. In addition, the existing vertical turret milling machine cannot automatically detect the groove type. After the groove milling is completed, an additional detection operation is required, resulting in low efficiency of the entire process. Therefore, it is necessary to design a CNC groove milling machine that can automatically feed materials and automatically detect. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a CNC slot milling machine capable of automatic material conveying and automatic detection, which solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A CNC slot milling machine capable of automatic material conveying and automatic detection, comprising a milling cutter and a crossbeam mounted on a machine body, and also comprising:

[0007] An automatic conveying part, which is used to automatically convey the workpiece during the milling process, and includes a fixed platform slidably installed in the crossbeam, two slide grooves are provided on the inner wall of the crossbeam, and sliders are slidably installed in the two slide grooves, a push plate is fixedly installed between the two sliders, an X-axis adjustment screw threadedly connected to one of the sliders is rotatably installed on the crossbeam, a force storage component is installed between the fixed platform and the push plate, and a one-way drive component matched with the X-axis adjustment screw is installed between the fixed platform and the push plate;

[0008] An automatic detection unit is used to automatically detect the groove type after the groove milling is completed. The automatic detection unit includes a Z-axis bracket slidably mounted on the beam through a moving component, a Y-axis bracket is slidably mounted on the Z-axis bracket, and a mounting plate is slidably mounted on the Y-axis bracket, a detection block that matches the milling cutter is fixedly mounted on the bottom of the mounting plate, a self-starting component is installed on the beam, and the self-starting component cooperates with the moving component and the one-way driving component.

[0009] Furthermore, the force storage assembly consists of an installation groove, two connecting grooves, two connecting rods and two tension springs. The installation groove is opened at the bottom of the fixed platform, and the installation groove is slidably matched with the propulsion plate. The two connecting grooves are opened on the side walls of the installation groove. The two connecting rods are fixedly installed on the propulsion plate, and the two connecting rods are respectively slidably connected to the corresponding connecting grooves. The two tension springs are respectively installed between the two connecting grooves and the corresponding connecting rods.

[0010] Furthermore, the one-way drive assembly consists of a rotating shaft, a driving gear ring, a fixed shaft, a one-way bearing, a connecting gear ring, an insertion rod, a slot and a convex rod. The rotating shaft is rotatably mounted on a fixed platform, the driving gear ring is slidably mounted on the rotating shaft along the X-axis, the fixed shaft is fixedly mounted on the X-axis adjusting screw, the connecting gear ring is mounted on the fixed shaft through a one-way bearing, and the connecting gear ring is meshed with the driving gear ring, a positioning mechanism is installed between the connecting gear ring and the driving gear ring, the insertion rod is fixedly mounted on a propulsion plate, the slot is provided on a side wall of one end of the rotating shaft close to the propulsion plate, and the slot is slidably and rotatably matched with the insertion rod, the convex rod is fixedly mounted on the side wall of the insertion rod, and a spiral groove matching the convex rod is provided on the side wall of the slot.

[0011] Furthermore, the positioning mechanism is composed of two fixing rings, two limiting rings, two annular grooves and two positioning blocks. The two fixing rings are respectively fixedly mounted on the left and right ends of the connecting gear ring, the two limiting rings are respectively rotatably mounted on the two fixing rings, the two annular grooves are respectively opened on the left and right side walls of the driving gear ring, the two positioning blocks are respectively fixedly mounted on the two limiting rings, and the two positioning blocks are respectively slidably matched with the two annular grooves.

[0012] Furthermore, an annular groove rotatably matched with the fixing ring is provided on the inner wall of the limiting ring, a plurality of guide grooves are provided on the rotating shaft, and a plurality of guide blocks matched with the corresponding guide grooves are fixedly mounted on the inner wall of the driving gear ring.

[0013] Furthermore, the moving component consists of a convex plate, a moving groove, a moving screw and a moving block. The convex plate is fixedly mounted on the crossbeam, the moving groove is opened on the convex plate, the moving screw is rotatably mounted on the convex plate, the moving block is threadedly connected to one end of the moving screw located in the moving groove, and the moving block is fixedly connected to the bottom of the Z-axis bracket.

[0014] Furthermore, the self-starting component is composed of a fixed gear, a transmission gear, a rotating ring, a docking gear ring and a centrifugal mechanism. The fixed gear is fixedly mounted on one end of the moving screw outside the convex plate, the transmission gear is rotatably connected to the cross beam, and the transmission gear is meshed with the fixed gear, the rotating ring is rotatably connected to the cross beam, and the rotating ring is coaxial with the fixed shaft, the docking gear ring is fixedly mounted on the rotating ring, and the docking gear ring is meshed with the transmission gear, and the centrifugal mechanism is installed between the docking gear ring and the fixed shaft.

[0015] Furthermore, the centrifugal mechanism is composed of a fixed disk, a rubber gasket, a spring ring, a plurality of centrifugal blocks and a plurality of arc grooves. The fixed disk is fixedly mounted on a fixed shaft, the plurality of centrifugal blocks are slidably mounted in the fixed disk, the rubber gasket is sleeved between the plurality of centrifugal blocks, the plurality of arc grooves are respectively provided on the corresponding centrifugal blocks, and the spring ring is sleeved between the plurality of arc grooves.

[0016] Furthermore, a limit block is fixedly installed on the side wall of the centrifugal block, a limit groove is opened on the side wall of the fixed plate to slide with the limit block, the tooth spacing of the transmission gear is equal to that of the fixed gear, and the number of teeth and diameter of the transmission gear are greater than those of the fixed gear.

[0017] Furthermore, a transverse plate is fixedly installed at the bottom of the beam, a transverse groove slidably matched with the transverse plate is opened on the machine body, and a Y-axis adjustment screw handwheel threadedly connected to the transverse plate is also rotatably installed on the machine body, and a plurality of T-shaped grooves are opened on the upper surface of the fixed table.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1: Through the cooperation of the power storage component and the one-way drive component, the resistance change between the workpiece and the milling cutter after slotting can be used to automatically drive the X-axis adjustment screw during the slot milling process to complete the automatic material conveying of the workpiece without manual operation by the staff. At the same time, since the material conveying speed automatically matches the slot milling process, there will be no problem of too fast or too slow material conveying.

[0020] 2: Through the cooperation of the self-starting component and the force storage component, the tension spring can release energy quickly by utilizing the large change in resistance after the groove milling is completed. At this time, the rapid rotation of the fixed shaft can drive the moving screw to rotate synchronously and quickly, so that the detection block can move a sufficient distance relative to the workpiece, and the groove type detection can be automatically completed without additional operation, which can greatly improve work efficiency.

[0021] 3: Through the cooperation of the positioning mechanism, guide block and guide groove, the meshing effect of the driving gear ring and the connecting gear ring can be effectively guaranteed, so that it is not affected by the movement of the fixed platform position. At the same time, it can also ensure the effective transmission of the rotating shaft to the driving gear ring, so that automatic material conveying and automatic detection processing can be completed smoothly.

[0022] To sum up, the present invention utilizes the changes in resistance between the milling cutter and the workpiece and the changes in the elastic potential energy of the tension spring during the groove milling process, and can automatically complete the material conveying processing during the groove milling process and the groove type detection processing after the groove milling is completed, without the need for manual processing by the staff, thereby greatly improving the groove milling effect and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a CNC slot milling machine capable of automatic material conveying and automatic detection proposed by the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure after removing the body;

[0026] Figure 4 for Figure 3 Structural diagram of the middle crossbeam from another perspective;

[0027] Figure 5 for Figure 3 Schematic diagram of the structure from another perspective after removing the crossbeam;

[0028] Figure 6 for Figure 5 Another perspective diagram of the structure at the middle fixed platform;

[0029] Figure 7 for Figure 5 Another perspective diagram of the structure at the middle propulsion plate;

[0030] Figure 8 for Figure 6 Schematic diagram of the structure at the middle drive ring gear;

[0031] Fig. 9 for Figure 8 An enlarged schematic diagram of the structure after removing the rotating shaft and the moving lead screw;

[0032] Fig.10 for Fig. 9 Schematic diagram of structural decomposition;

[0033] Fig.11 for Fig.10 Another perspective enlarged view of the centrifugal block.

[0034] In the figure: 1, machine body; 2, milling cutter; 3, crossbeam; 4, fixed table; 5, Y-axis adjustment screw handwheel; 6, T-slot; 7, slide groove; 8, slide block; 9, X-axis adjustment screw; 10, push plate; 11, installation groove; 12, connecting groove; 13, connecting rod; 14, tension spring; 15, rotating shaft; 16, driving gear ring; 17, guide groove; 18, guide block; 19, one-way bearing; 20, connecting gear ring; 21, fixing ring; 22, limit ring; 23, Annular groove; 24, annular groove; 25, plug rod; 26, convex rod; 27, convex plate; 28, movable groove; 29, movable screw rod; 30, movable block; 31, Z-axis bracket; 32, Y-axis bracket; 33, mounting plate; 34, fixed gear; 35, transmission gear; 36, rotating ring; 37, docking gear ring; 38, fixed plate; 39, rubber gasket; 40, centrifugal block; 41, arc groove; 42, spring ring; 43, limit block; 44, fixed shaft. DETAILED DESCRIPTION

[0035] Reference Figure 1-Figure 11 A CNC slot milling machine capable of automatic material conveying and automatic detection includes a milling cutter 2 and a crossbeam 3 installed on a machine body 1. The machine body 1 is an existing vertical turret milling machine, which is composed of a base, a lifting platform, an electric box, a saddle, a column, a turntable, a ram, a motor and other components. The specific structure and working principle are not described here. The milling cutter 2 is a tool for slot milling, which can be disassembled and assembled on the machine body 1. The staff can select the corresponding milling cutter 2 according to different slot requirements. It also includes:

[0036] The automatic conveying part is used to automatically convey the workpiece during the milling process. The automatic conveying part includes a fixed table 4 slidably installed in the beam 3. A plurality of T-slots 6 are provided on the upper surface of the fixed table 4. Through the design of the plurality of T-slots 6, the fixture for fixing the workpiece is installed on the fixed table 4 at a suitable position, and then different workpieces are fixed on the fixed table 4 through the corresponding fixture. The fixing fixture is an existing product, and its working principle and specific structure are not elaborated here.

[0037] A transverse plate is fixedly installed at the bottom of the crossbeam 3, and a transverse groove slidably cooperated with the transverse plate is opened on the machine body 1. A Y-axis adjusting screw handwheel 5 threadedly connected to the transverse plate is also rotatably installed on the machine body 1. After the workpiece is fixed, the transverse plate can be slid along the Y-axis direction in the transverse groove by rotating the Y-axis adjusting screw handwheel 5, so that the position of the crossbeam 3 on the Y-axis can be adjusted, the relative position control of the workpiece and the milling cutter 2 can be realized, and the initial processing point can be determined.

[0038] Two slide grooves 7 are provided on the inner wall of the crossbeam 3, and sliders 8 are slidably installed in the two slide grooves 7, a push plate 10 is fixedly installed between the two sliders 8, an X-axis adjustment screw 9 threadedly connected to one of the sliders 8 is rotatably installed on the crossbeam 3, a power storage component is installed between the fixed platform 4 and the push plate 10, and a handle is fixedly installed at one end of the X-axis adjustment screw 9. When the handle is turned, the push plate 10 can slide along the X-axis on the crossbeam 3 through the cooperation of the X-axis adjustment screw 9 and the corresponding slider 8, thereby driving the workpiece to move in the X-axis direction, which is convenient for conveying material processing during the processing.

[0039] The power storage assembly is composed of a mounting groove 11, two connecting grooves 12, two connecting rods 13 and two tension springs 14. The mounting groove 11 is provided at the bottom of the fixed platform 4, and the mounting groove 11 is slidably matched with the propulsion plate 10. The two connecting grooves 12 are provided on the side walls of the mounting groove 11. The two connecting rods 13 are fixedly installed on the propulsion plate 10, and the two connecting rods 13 are respectively slidably connected with the corresponding connecting grooves 12. The two tension springs 14 are respectively installed between the two connecting grooves 12 and the corresponding connecting rods 13.

[0040] Before processing, after the workpiece is fixed and the processing position is adjusted, turn the X-axis adjustment screw 9 to allow the fixed table 4 to slide to the right on the beam 3 (such as Figure 1 As shown), let the workpiece be located on the right side of the milling cutter 2, then adjust the height of the milling cutter 2 so that the distance between its lower end and the upper surface of the workpiece is the depth of the groove to be processed, and then continue to rotate the X-axis adjusting screw 9 to move the fixed table 4 to the left, so that the workpiece and the milling cutter 2 are in close contact, and then continue to rotate the X-axis adjusting screw 9 to move the push plate 10 to the left in the installation groove 11, and the tension spring 14 is stretched by the sliding of the connecting rod 13 in the connecting groove 12. The cross-sections of the connecting rod 13 and the connecting groove 12 are both T-shaped, which can ensure a stable connection between the two.

[0041] A one-way drive assembly matched with the X-axis adjusting screw 9 is installed between the fixed platform 4 and the push plate 10. The one-way drive assembly consists of a rotating shaft 15, a driving gear ring 16, a fixed shaft 44, a one-way bearing 19, a connecting gear ring 20, a plug rod 25, a slot and a convex rod 26. The rotating shaft 15 is rotatably mounted on the fixed platform 4, the driving gear ring 16 is slidably mounted on the rotating shaft 15 along the X-axis, the fixed shaft 44 is fixedly mounted on the X-axis adjusting screw 9, the connecting gear ring 20 is mounted on the fixed shaft 44 through the one-way bearing 19, and the connecting gear ring 20 and the driving gear ring are connected. The ring 16 is meshed, the plug rod 25 is fixedly installed on the push plate 10, the slot is opened on the side wall of the rotating shaft 15 close to the push plate 10, and the slot and the plug rod 25 slide and rotate together, the convex rod 26 is fixedly installed on the side wall of the plug rod 25, and the side wall of the slot is provided with a spiral groove that matches the convex rod 26. After the compression of the tension spring 14 is completed, the machine body 1 is started to make the milling cutter 2 rotate to mill the workpiece. With the processing progress, the contact end of the workpiece and the milling cutter 2 gradually forms a corresponding groove shape. At this time, the resistance of the milling cutter 2 to the workpiece is reduced, so the tension spring 14 The pulling force exerts a leftward pulling force on the fixed platform 4, driving the insertion rod 25 to move rightward in the slot. At this time, the cooperation between the protruding rod 26 and the spiral groove causes the rotating shaft 15 to rotate, and the driving gear ring 16 rotates at the same time. In this process, the one-way bearing 19 is in a locked state, so the driving gear ring 16 can drive the fixed shaft 44 to rotate by connecting the gear ring 20. At this time, the X-axis adjustment screw 9 rotates to continue to move the propulsion plate 10 to the left, stretching the tension spring 14 again. When the propulsion plate 10 moves to the left in the installation slot 11, the insertion rod 25 moves to the left in the slot. At this time, the protruding rod 26 The cooperation with the spiral groove makes the rotating shaft 15 rotate in the opposite direction, so the driving ring gear 16 drives the connecting ring gear 20 to rotate in the opposite direction. At this time, the one-way bearing 19 is in a rotating state, so the X-axis adjustment screw 9 will not continue to rotate. Through the above process, during the processing, the force storage effect of the tension spring 14 and the change of resistance between the workpiece and the milling cutter 2 can be utilized to automatically realize the material conveying processing of the workpiece according to the milling process, without the need for manual material conveying by the staff. At the same time, the material conveying speed automatically matches the milling process, and there will be no problem of too fast or too slow material conveying.

[0042] A plurality of guide grooves 17 are provided on the rotating shaft 15, and a plurality of guide blocks 18 matching the corresponding guide grooves 17 are fixedly mounted on the inner wall of the driving gear ring 16. The cooperation between the guide blocks 18 and the guide grooves 17 ensures that the driving gear ring 16 can slide relative to the rotating shaft 15, and at the same time, when the rotating shaft 15 rotates, it can also stably drive the driving gear ring 16 to rotate synchronously.

[0043] A positioning mechanism is installed between the connecting gear ring 20 and the driving gear ring 16, and the positioning mechanism consists of two fixing rings 21, two limiting rings 22, two annular grooves 24 and two positioning blocks. The two fixing rings 21 are fixedly installed on the left and right ends of the connecting gear ring 20 respectively, and the two limiting rings 22 are rotatably installed on the two fixing rings 21 respectively. The two annular grooves 24 are respectively opened on the left and right side walls of the driving gear ring 16, and the two positioning blocks are respectively fixedly installed on the two limiting rings 22, and the two positioning blocks are respectively slidably matched with the two annular grooves 24. An annular groove 23 that rotatably cooperates with the fixing ring 21 is opened on the inner wall of the limiting ring 22. Through the cooperation of the limiting ring 22 and the positioning block, the meshing effect between the driving gear ring 16 and the connecting gear ring 20 can be guaranteed so that it is not affected by the forward and backward movement of the rotating shaft 15.

[0044] An automatic detection unit is used to automatically detect the groove type after the groove milling is completed. The automatic detection unit includes a Z-axis bracket 31 slidably installed on the beam 3 through a moving component. A Y-axis bracket 32 ​​is slidably installed on the Z-axis bracket 31, and a mounting plate 33 is slidably installed on the Y-axis bracket 32. A detection block that matches the milling cutter 2 is fixedly installed at the bottom of the mounting plate 33. The detection block uses a metal piece with the same shape as the milling cutter 2. After the groove milling is completed, the detection block is allowed to pass through the groove body. If it can pass smoothly, it means that there is no problem with the groove body. Otherwise, it means that the groove milling effect is not good. Through the cooperation of the Z-axis bracket 31 and the Y-axis bracket 32, the position of the detection block can be adjusted before the groove milling process is performed so that it coincides with the position of the milling cutter 2 on the Y axis and the Z axis. Therefore, after the groove milling is completed, the detection process can be completed by moving the detection block on the X axis.

[0045] The moving assembly consists of a convex plate 27, a moving groove 28, a moving screw 29 and a moving block 30. The convex plate 27 is fixedly mounted on the crossbeam 3, the moving groove 28 is opened on the convex plate 27, the moving screw 29 is rotatably mounted on the convex plate 27, the moving block 30 is threadedly connected to one end of the moving screw 29 located in the moving groove 28, and the moving block 30 is fixedly connected to the bottom of the Z-axis bracket 31. When the moving screw 29 is rotated, the Z-axis bracket 31 can be driven to slide along the X-axis on the convex rod 26 through the moving block 30, thereby driving the adjusted detection block to move synchronously.

[0046] A self-starting assembly is installed on the cross beam 3, and the self-starting assembly cooperates with the moving assembly and the one-way drive assembly. The self-starting assembly consists of a fixed gear 34, a transmission gear 35, a rotating ring 36, a docking gear ring 37 and a centrifugal mechanism. The fixed gear 34 is fixedly installed on the end of the moving screw 29 outside the convex plate 27, the transmission gear 35 is rotatably connected to the cross beam 3, and the transmission gear 35 is meshed with the fixed gear 34, the rotating ring 36 is rotatably connected to the cross beam 3, and the rotating ring 36 is coaxial with the fixed shaft 44, the docking gear ring 37 is fixedly installed on the rotating ring 36, and the docking gear ring 37 is meshed with the transmission gear 35, and the centrifugal mechanism is installed between the docking gear ring 37 and the fixed shaft 44;

[0047] The centrifugal mechanism is composed of a fixed disk 38, a rubber pad 39, a spring ring 42, a plurality of centrifugal blocks 40 and a plurality of arc grooves 41. The fixed disk 38 is fixedly mounted on the fixed shaft 44. The plurality of centrifugal blocks 40 are slidably mounted in the fixed disk 38. The rubber pad 39 is sleeved between the plurality of centrifugal blocks 40. The plurality of arc grooves 41 are respectively provided on the corresponding centrifugal blocks 40. The spring ring 42 is sleeved between the plurality of arc grooves 41. When the slot milling is not completed, due to the resistance of the milling cutter 2 to the workpiece, the rotation speed of the rotating shaft 15 under the elastic force of the tension spring 14 is low. At this time, the centrifugal force generated by the rotation of the fixed shaft 44 is not enough to overcome the elastic force of the spring ring 42. Therefore, the plurality of centrifugal blocks 40 remain in position on the fixed disk 38. The rubber pad 39 and the docking gear ring 37 are in a separated state. At this time, the rotation of the fixed shaft 44 will not drive the docking gear ring 37 to rotate. Therefore, the transmission gear 35 and the fixed gear 34 are both in a stationary state, that is, the detection block remains stationary during the slot milling process.

[0048] When the milling groove is completed, the milling cutter 2 does not apply moving resistance to the workpiece. At this time, the elastic force of the tension spring 14 is quickly released, so the rotating shaft 15 rotates at a higher speed. At this time, the centrifugal force of the fixed shaft 44 causes the multiple centrifugal blocks 40 to overcome the elastic force of the spring ring 42 and move outward. The rubber pad 39 is tightly fitted between the docking gear ring 37 and the multiple centrifugal blocks 40. Therefore, the rotation of the fixed shaft 44 drives the docking gear ring 37 to rotate at the same time, thereby driving the fixed gear 34 to rotate through the transmission gear 35, providing drive for the movement of the detection block. It is worth noting that when the X-axis adjusting screw 9 and the moving screw 29 rotate in the same direction, the fixed table 4 and the detection block move relative to each other. This effect can be achieved by adjusting the screw direction of the X-axis adjusting screw 9 and the moving screw 29, which will not be specifically described here. When the detection block moves relative to the fixed table 4, the detection block can smoothly enter the groove body on the workpiece, automatically realizing the detection of the groove type, without the need for additional operation by the staff. At the same time, detection elements such as pressure sensors can also be installed on the side of the detection block, and the processing effect of the groove body can be more accurately judged by the value change of the detection element.

[0049] A limit block 43 is fixedly installed on the side wall of the centrifugal block 40, and a limit groove that slides with the limit block 43 is opened on the side wall of the fixed plate 38. With the cooperation of the limit block 43 and the limit groove, the moving direction of the centrifugal block 40 on the fixed plate 38 can be effectively limited. The tooth spacing of the transmission gear 35 is equal to that of the fixed gear 34, and the number of teeth and the diameter of the transmission gear 35 are greater than those of the fixed gear 34. The advantage of the size design here is that the transmission gear 35 can drive the moving screw 29 to rotate more circles, thereby ensuring that the detection block can have a sufficient moving distance relative to the workpiece to complete the detection and processing of the entire groove type.

[0050] In the present invention, a CNC slot milling machine capable of automatic material conveying and automatic detection has the following working principle:

[0051] Fixing of the workpiece and determination of the processing position: Fix the fixture on the fixed table 4, and then use the fixture to fix the workpiece on the fixed table 4. After the fixation is completed, the Y-axis adjustment screw handwheel 5 is turned to make the transverse plate slide along the Y-axis direction in the transverse groove, so as to adjust the position of the beam 3 on the Y-axis, realize the relative position control of the workpiece and the milling cutter 2, and determine the initial processing point;

[0052] Conveying material force storage process: After the workpiece is fixed and the processing position is adjusted, the X-axis adjusting screw 9 is rotated to allow the fixed platform 4 to slide to the right on the crossbeam 3 until the workpiece is located on the right side of the milling cutter 2, and then the height of the milling cutter 2 is adjusted so that the distance between its lower end and the upper surface of the workpiece is the depth of the groove to be processed, and the X-axis adjusting screw 9 is continued to be rotated to allow the fixed platform 4 to move to the left, so that the workpiece and the milling cutter 2 are in close contact, and then the X-axis adjusting screw 9 is continued to be rotated to allow the push plate 10 to move to the left in the installation groove 11, and the tension spring 14 is stretched and force is stored by sliding the connecting rod 13 in the connecting groove 12, so that the tension spring 14 always applies a pulling force to the left on the fixed platform 4;

[0053] Position adjustment of the detection block: before the slot milling process, the detection block and the milling cutter 2 are made to coincide with each other on the Y axis and the Z axis by cooperating with the Z axis bracket 31 and the Y axis bracket 32;

[0054] Automatic material conveying during slot milling: Start the machine body 1 to rotate the milling cutter 2 to mill the workpiece. As the machining progresses, the contact end of the workpiece and the milling cutter 2 gradually forms a corresponding slot. At this time, the resistance of the milling cutter 2 to the workpiece decreases, so the tension of the tension spring 14 applies a leftward tension to the fixed table 4, allowing the workpiece to continue to be closely attached to the milling cutter 2.

[0055] At the same time, when the tension of the tension spring 14 pulls the fixed platform 4 to move, the insertion rod 25 on the push plate 10 moves to the right in the slot. At this time, the cooperation between the protruding rod 26 and the spiral groove makes the rotating shaft 15 rotate, and the driving gear ring 16 rotates at the same time. During this process, the one-way bearing 19 is in a locked state, so the driving gear ring 16 can drive the fixed shaft 44 to rotate by connecting the gear ring 20. At this time, the X-axis adjustment screw 9 rotates to continue to move the push plate 10 to the left, and the tension spring 14 is stretched and stored again. Since the workpiece is always tightly attached to the milling cutter 2, the energy released by the tension spring 14 in the above process is not enough to make it completely relaxed, that is, the size change of the tension spring 14 is less than its maximum deformation;

[0056] As the processing proceeds, the groove on the workpiece is gradually formed, so the material can continue to be conveyed under the elastic force of the tension spring 14 and the tension state of the tension spring 14 is maintained;

[0057] Groove type detection: After the groove milling is completed, the milling cutter 2 does not apply movement resistance to the workpiece. At this time, the elastic force of the tension spring 14 is quickly released, so the rotating shaft 15 rotates at a higher speed. At this time, the centrifugal force of the fixed shaft 44 causes the multiple centrifugal blocks 40 to overcome the elastic force of the spring coil 42 and move outward. The rubber gasket 39 fits tightly between the docking gear ring 37 and the multiple centrifugal blocks 40. Therefore, the rotation of the fixed shaft 44 drives the docking gear ring 37 to rotate at the same time, thereby driving the fixed gear 34 to rotate through the transmission gear 35, providing drive for the movement of the detection block, so that it moves relative to the fixed table 4 and smoothly enters the groove body until it passes through the entire groove body. During this process, if the detection block can pass through the groove body smoothly, it means that there is no problem with the groove body, otherwise it means that the groove milling effect is not good.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A CNC slot milling machine capable of automatic material conveying and automatic detection, comprising a milling cutter (2) and a crossbeam (3) mounted on a machine body (1), characterized in that: Also includes: An automatic conveying unit, which is used to automatically convey the workpiece during the milling process, and comprises a fixed platform (4) slidably mounted in a crossbeam (3), two slide grooves (7) are provided on the inner wall of the crossbeam (3), and sliders (8) are slidably mounted in the two slide grooves (7), a push plate (10) is fixedly mounted between the two sliders (8), an X-axis adjustment screw (9) threadedly connected to one of the sliders (8) is rotatably mounted on the crossbeam (3), a force storage component is mounted between the fixed platform (4) and the push plate (10), and a one-way drive component matched with the X-axis adjustment screw (9) is mounted between the fixed platform (4) and the push plate (10); An automatic detection unit, which is used to automatically detect the groove type after the groove milling is completed, and the automatic detection unit comprises a Z-axis bracket (31) slidably mounted on the crossbeam (3) through a moving component, a Y-axis bracket (32) slidably mounted on the Z-axis bracket (31), and a mounting plate (33) slidably mounted on the Y-axis bracket (32), a detection block matched with the milling cutter (2) is fixedly mounted on the bottom of the mounting plate (33), and a self-starting component is mounted on the crossbeam (3), and the self-starting component matches with the moving component and the one-way driving component; The power storage assembly is composed of a mounting groove (11), two connecting grooves (12), two connecting rods (13) and two tension springs (14); the mounting groove (11) is provided at the bottom of the fixed platform (4), and the mounting groove (11) is slidably matched with the propulsion plate (10); the two connecting grooves (12) are both provided on the side walls of the mounting groove (11); the two connecting rods (13) are both fixedly mounted on the propulsion plate (10), and the two connecting rods (13) are respectively slidably connected to the corresponding connecting grooves (12); and the two tension springs (14) are respectively mounted between the two connecting grooves (12) and the corresponding connecting rods (13); The one-way drive assembly comprises a rotating shaft (15), a driving gear ring (16), a fixed shaft (44), a one-way bearing (19), a connecting gear ring (20), an insert rod (25), a slot and a protruding rod (26); the rotating shaft (15) is rotatably mounted on a fixed platform (4); the driving gear ring (16) is slidably mounted on the rotating shaft (15) along an X-axis; the fixed shaft (44) is fixedly mounted on an X-axis adjusting screw rod (9); the connecting gear ring (20) is mounted on the fixed shaft (44) via a one-way bearing (19) ), and the connecting gear ring (20) is meshed with the driving gear ring (16), a positioning mechanism is installed between the connecting gear ring (20) and the driving gear ring (16), the insertion rod (25) is fixedly installed on the advancement plate (10), the slot is opened on the side wall of one end of the rotating shaft (15) close to the advancement plate (10), and the slot and the insertion rod (25) are slidably and rotationally matched, the protruding rod (26) is fixedly installed on the side wall of the insertion rod (25), and the side wall of the slot is opened with a spiral groove matching the protruding rod (26).

2. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 1, characterized in that: The positioning mechanism is composed of two fixing rings (21), two limiting rings (22), two annular grooves (24) and two positioning blocks. The two fixing rings (21) are respectively fixedly mounted on the left and right ends of the connecting gear ring (20). The two limiting rings (22) are respectively rotatably mounted on the two fixing rings (21). The two annular grooves (24) are respectively opened on the left and right side walls of the driving gear ring (16). The two positioning blocks are respectively fixedly mounted on the two limiting rings (22), and the two positioning blocks are respectively slidably matched with the two annular grooves (24).

3. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 2, characterized in that: The inner wall of the limiting ring (22) is provided with an annular groove (23) rotatably matched with the fixing ring (21), the rotating shaft (15) is provided with a plurality of guide grooves (17), and the inner wall of the driving gear ring (16) is fixedly provided with a plurality of guide blocks (18) matched with the corresponding guide grooves (17).

4. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 1, characterized in that: The moving assembly consists of a convex plate (27), a moving groove (28), a moving screw (29) and a moving block (30); the convex plate (27) is fixedly mounted on the crossbeam (3); the moving groove (28) is formed on the convex plate (27); the moving screw (29) is rotatably mounted on the convex plate (27); the moving block (30) is threadedly connected to one end of the moving screw (29) located in the moving groove (28); and the moving block (30) is fixedly connected to the bottom of the Z-axis bracket (31).

5. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 4, characterized in that: The self-starting assembly is composed of a fixed gear (34), a transmission gear (35), a rotating ring (36), a docking gear ring (37), and a centrifugal mechanism. The fixed gear (34) is fixedly mounted on an end of the movable screw (29) located outside the convex plate (27). The transmission gear (35) is rotatably connected to the crossbeam (3), and the transmission gear (35) is meshed with the fixed gear (34). The rotating ring (36) is rotatably connected to the crossbeam (3), and the rotating ring (36) is coaxial with the fixed shaft (44). The docking gear ring (37) is fixedly mounted on the rotating ring (36), and the docking gear ring (37) is meshed with the transmission gear (35). The centrifugal mechanism is mounted between the docking gear ring (37) and the fixed shaft (44).

6. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 5, characterized in that: The centrifugal mechanism comprises a fixed disk (38), a rubber gasket (39), a spring ring (42), a plurality of centrifugal blocks (40) and a plurality of arc-shaped grooves (41); the fixed disk (38) is fixedly mounted on a fixed shaft (44); the plurality of centrifugal blocks (40) are slidably mounted in the fixed disk (38); the rubber gasket (39) is sleeved between the plurality of centrifugal blocks (40); the plurality of arc-shaped grooves (41) are respectively provided on corresponding centrifugal blocks (40); and the spring ring (42) is sleeved between the plurality of arc-shaped grooves (41).

7. A CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 6, characterized in that: A limit block (43) is fixedly mounted on the side wall of the centrifugal block (40); a limit groove for slidingly cooperating with the limit block (43) is provided on the side wall of the fixed plate (38); the tooth pitch of the transmission gear (35) is equal to that of the fixed gear (34); and the number of teeth and the diameter of the transmission gear (35) are greater than those of the fixed gear (34).

8. The CNC slot milling machine capable of automatic material conveying and automatic detection according to claim 1, characterized in that: A transverse plate is fixedly mounted on the bottom of the crossbeam (3); a transverse groove slidably matched with the transverse plate is provided on the machine body (1); a Y-axis adjustment screw hand wheel (5) threadedly connected to the transverse plate is also rotatably mounted on the machine body (1); and a plurality of T-shaped grooves (6) are provided on the upper surface of the fixed platform (4).

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