Machine tool with protection function

Abstract

The machine tool with the protection function relates to the field of machining equipment and comprises a machine body and a protection cover, the protection cover is arranged on the outer side of the machine body and is slidably connected with the machine body in the rotating axis direction of a workpiece, a moving seat is arranged on the machine body, and a tool seat is arranged at the upper end of the moving seat and is in threaded connection with a screw rod; the tool base moves in the direction perpendicular to the rotating axis of the workpiece, the end, close to the protective cover, of the screw is sleeved with a first gear used for driving the screw to rotate, the first gear is rotationally connected with the movable base and meshed with a first rack, and a second rack is arranged on the side, close to the movable base, of the protective cover and meshed with a second gear. A synchronizing shaft rotationally connected with the machine body is arranged on the machine body and coaxially and fixedly connected with the second gear, a third gear is coaxially and fixedly arranged at the end, close to the machine body, of the synchronizing shaft, and the third gear is meshed with the first rack. The method has the effect of improving the safety.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing equipment, and in particular to a machine tool with a protective function. Background Art

[0002] At present, machine tools are mainly used for turning rotating workpieces. In the metal processing process, machine tools, as key equipment, are widely used in various processing workshops.

[0003] Due to the high cutting speed and large cutting volume of the machine tool, in order to cool the temperature of the cutting chips during processing, coolant must be sprayed through the cooling pipe to reduce the temperature of the iron chips. The flying iron chips can easily injure the surrounding workers and also affect the safety of the surrounding workers. Therefore, a protective door is set on the machine tool, which is slidably connected to the machine tool. The operator manually opens the protective door to load and unload materials, and closes the protective door before starting to process the workpiece.

[0004] The protective door needs to be closed manually by the staff frequently. There are cases where the staff forget to close the protective door and start processing, the staff mistakenly open the protective door during workpiece processing, or the protective door is not closed tightly due to machine tool vibration. At this time, the flying iron chips will injure the surrounding staff and create a safety hazard. Utility Model Content

[0005] In order to improve safety, the present application provides a machine tool with a protective function.

[0006] The present application provides a machine tool with a protective function, which adopts the following technical solution:

[0007] A machine tool with a protective function comprises a machine body and a protective cover, wherein the protective cover is arranged on the outside of the machine body and is slidably connected to the machine body along the direction of the rotation axis of the workpiece, a moving seat is arranged on the machine body, a tool seat is arranged on the upper end of the moving seat, a screw is threadedly connected to the tool seat, and the tool seat moves in a direction perpendicular to the rotation axis of the workpiece, an end of the screw close to the protective cover is sleeved with a first gear for driving the screw to rotate, the first gear is rotationally connected to the moving seat, the first gear is meshed with a first rack, a second rack is arranged on a side of the protective cover close to the moving seat, the second rack is meshed with a second gear, a synchronous shaft rotationally connected to the machine body is arranged on the machine body, the synchronous shaft is coaxially fixedly connected to the second gear, a third gear is coaxially fixedly provided at one end of the synchronous shaft close to the machine body, and the third gear is meshed with the first rack.

[0008] By adopting the above technical solution, the protective cover drives the second rack to move in the direction of closing the protective cover. Due to the meshing relationship between the second gear and the second rack, the second gear will rotate accordingly, and the second gear will drive the synchronous shaft to rotate. The third gear will also rotate with the rotation of the synchronous shaft, and the first rack will move in the direction of closing the protective cover. Due to the meshing relationship between the first gear and the first rack, the first gear will rotate accordingly, and the first gear will drive the screw to rotate, and the screw rotation drives the tool seat to move in the direction of the workpiece. Conversely, when the protective cover is opened, the screw reverses to drive the tool seat to move away from the workpiece. At this time, the tool on the tool seat cannot process the workpiece, reducing injuries to workers caused by splashing iron chips and improving safety.

[0009] Optionally, the movable seat is slidably connected to a feed seat in a direction perpendicular to the rotation axis of the workpiece, the tool seat is slidably connected to the feed seat, the screw is rotatably connected to the feed seat, a convex strip is circumferentially provided at one end of the screw close to the protective cover, a groove corresponding to the convex strip is provided on the first gear, and the screw is slidably connected to the first gear along its own axial direction.

[0010] By adopting the above technical solution, the screw rod is slidably connected to the first gear, which can ensure that when the machine tool moves and feeds during the process of machining the workpiece, the linkage mechanism between the protective cover and the moving seat can still work normally, further ensuring the safety of the machine tool during operation.

[0011] Optionally, a limit frame is provided on the movable seat, a pressure plate is provided in the limit frame, a first elastic member is provided between the side of the pressure plate away from the first gear and the limit frame, the first rack is not meshed with the first gear in a natural state of the first elastic member, the pressure plate is slidably connected to the limit frame along the vertical direction, the first rack is located between the first gear and the pressure plate, and both the limit frame and the pressure plate are slidably connected to the first rack along the direction of the rotation axis of the workpiece.

[0012] By adopting the above technical solution, under normal circumstances, the first rack will not interfere with the normal processing of the machine tool, thereby further improving the safety and usability of the machine tool.

[0013] Optionally, a pressure rod is provided at the end of the first rack away from the first gear, and the end of the pressure rod close to the first rack is rotatably connected to a pressure wheel, the axial direction of the pressure wheel is the same as the axial direction of the first gear, the side wall of the pressure wheel is in contact with the first rack, and the end of the pressure rod away from the first rack is slidably connected to the fuselage along the vertical direction.

[0014] By adopting the above technical solution, pressing the pressure rod can make the first rack mesh with the first gear and the third gear, thereby realizing the linkage between the protective cover and the movable seat, and the pressure wheel can reduce the friction force when the first rack moves horizontally.

[0015] Optionally, the end of the pressure rod away from the first rack is an inclined surface, and the height of the inclined surface gradually increases along the sliding direction when the protective cover is opened. A sliding groove is opened in the side wall of the fuselage, and a second elastic member is provided in the sliding groove. One end of the second elastic member abuts against the fuselage, and the other end of the second elastic member abuts against the pressure rod. When the second elastic member is in a natural state, the lowest side of the inclined surface is located between the outer wall of the fuselage and the corresponding inner wall of the protective cover.

[0016] By adopting the above technical solution, when the protective cover is opened, the inclined surface is squeezed to drive the pressure rod to move downward, and the pressure rod drives the first rack to engage with the first gear and the third gear, thereby realizing the linkage between the protective cover and the moving seat; when the protective cover is closed, the second elastic member returns the pressed pressure rod to its original position through its own elasticity, and the first rack is away from the first gear and the third gear, which will not interfere with the normal processing of the machine tool, thereby further increasing the safety and ease of use of the machine tool.

[0017] Optionally, a support plate is sleeved on the pressure rod, the support plate is fixedly connected to the fuselage, and the pressure rod is slidably connected to the support plate along the vertical direction.

[0018] By adopting the above technical solution, the support plate can improve the stability of the pressure rod.

[0019] Optionally, two protective covers are provided, the two protective covers are symmetrically arranged, a plurality of magnets are provided at the joints of the two protective covers, and a handle is provided on the protective cover.

[0020] By adopting the above technical solution, the two protective covers slide in opposite directions, reducing the space outside the machine body occupied after the protective covers are opened. Arranging magnets can make the two protective covers fit more closely, reducing the processing errors caused by the sliding of the protective covers due to the vibration of the machine tool, which further drives the sliding of the tool seat.

[0021] Optionally, a fourth gear is rotatably connected to the fuselage, and the axial direction of the fourth gear is perpendicular to the side wall of the fuselage where the fourth gear is provided. The fourth gear is meshed with a third rack and a fourth rack. The third rack and the fourth rack are parallel to each other and are respectively located on both sides of the fourth gear. The third rack and the fourth rack are fixedly connected to different protective covers.

[0022] By adopting the above technical solution, the third rack and the fourth rack are meshed with the fourth gear, thereby realizing the synchronous opening and closing of the two protective covers.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The protective cover drives the second rack to move in the direction of closing the protective cover. Due to the meshing relationship between the second gear and the second rack, the second gear will rotate accordingly, and the second gear will drive the synchronous shaft to rotate. The third gear will also rotate with the rotation of the synchronous shaft, and the first rack will move in the direction of closing the protective cover. Due to the meshing relationship between the first gear and the first rack, the first gear will rotate accordingly, and the first gear will drive the screw to rotate, and the screw rotation drives the tool holder to move toward the workpiece. Conversely, when the protective cover is opened, the screw reverses to drive the tool holder to move away from the workpiece. At this time, the tool on the tool holder cannot process the workpiece, reducing injuries to workers caused by splashing iron chips and improving safety;

[0025] 2. The screw rod is slidably connected to the first gear, which can ensure that when the machine tool moves and feeds during the processing of the workpiece, the linkage mechanism between the protective cover and the moving seat can still work normally, further ensuring the safety of the machine tool during operation;

[0026] 3. Under normal circumstances, the first rack will not interfere with the normal processing of the machine tool, further increasing the safety and ease of use of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view of a machine tool with protective function.

[0028] Figure 2 yes Figure 1 Schematic diagram of the cross section along the AA direction.

[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of part C.

[0030] Figure 4 yes Figure 1 Schematic diagram of the cross section along the BB direction.

[0031] Figure 5 yes Figure 4 Enlarged schematic diagram of part D in the figure.

[0032] Figure 6 yes Figure 4 Enlarged schematic diagram of part E in the middle.

[0033] Explanation of the accompanying drawings: 1. Body; 11. Moving seat; 12. Tool seat; 121. Screw; 122. Raised strip; 13. First gear; 14. First rack; 141. Third gear; 15. Feed seat; 16. Limiting frame; 161. Pressing plate; 162. First elastic member; 17. Sliding groove; 18. Fourth gear; 2. Protective cover; 21. Second rack; 22. Second gear; 221. Synchronous shaft; 23. Magnet; 24. Handle; 25. Third rack; 26. Fourth rack; 3. Pressing rod; 31. Pressing wheel; 32. Second elastic member; 33. Inclined surface; 34. Support plate. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0035] The embodiment of the present application discloses a machine tool with a protective function.

[0036] Reference Figure 1 A machine tool with a protective function comprises a machine body 1, two protective covers 2 are slidably connected to the machine body 1 along the axis of rotation of the workpiece on the outer side of the machine body 1, and the protective covers 2 and the machine body 1 together enclose a space for processing the workpiece, thereby ensuring that during the processing, chips and coolant will not splash out of the space, protecting the safety of the operator. The two protective covers 2 are symmetrically arranged, and the protective covers 2 are provided with a plurality of magnets 23 at the joint of the two protective covers 2, and a handle 24 is provided on the protective cover 2. A fourth gear 18 is rotatably connected to the machine body 1, and the axis direction of the fourth gear 18 is perpendicular to the side wall of the machine body 1 on which the fourth gear 18 is provided, and the fourth gear 18 is meshed with a third rack 25 and a fourth rack 26, and the third rack 25 and the fourth rack 26 move in opposite directions, and the third rack 25 and the fourth rack 26 are fixedly connected to different protective covers 2. The synchronous switching of the two protective covers 2 can be realized.

[0037] Reference Figure 2 and Figure 3The body 1 is provided with a moving seat 11, on which a feed seat 15 slides, and on which a tool seat 12 slides. The moving seat 11 is used to drive the tool to move back and forth along the direction of the axis of rotation of the workpiece to process the surface of the workpiece. The tool seat 12 and the feed seat 15 have the same sliding direction, and both move in a direction perpendicular to the axis of rotation of the workpiece. The moving seat 11 and the feed seat 15 are threadedly connected with a screw, and a motor is provided to drive the screw to rotate, and the rotation of the screw drives the moving seat 11 and the feed seat 15 to move; the tool seat 12 is threadedly connected with a screw 121, and the screw 121 is rotatably connected to the feed seat 15, and the rotation of the screw 121 drives the tool seat 12 to move. A convex strip 122 is circumferentially provided at one end of the screw 121 close to the protective cover 2, and a groove corresponding to the convex strip 122 is provided on the first gear 13. The screw 121 is coaxially slidably connected with the first gear 13. The matching structure of the convex strip 122 and the concave groove not only ensures stable transmission between the screw rod 121 and the first gear 13, but also allows the screw rod 121 to move axially relative to the first gear 13 when the feed seat 15 moves, thereby meeting more complex processing requirements.

[0038] Reference Figure 2 and Figure 3 When the screw 121 rotates, the tool holder 12 moves in a direction perpendicular to the axis of rotation of the workpiece to achieve the action of feeding or retracting. The moving holder 11 is rotatably connected to the first gear 13, and the first gear 13 is coaxially slidably connected to the screw 121. The first gear 13 is meshed with the first rack 14, and when the first rack 14 moves along the axis of rotation of the workpiece, it drives the first gear 13 to rotate.

[0039] Reference Figure 3 and Figure 4 , a second rack 21 is provided on one side of the protective cover 2 close to the moving seat 11, and the second rack 21 is meshed with a second gear 22. A synchronous shaft 221 is provided on the machine body 1, which is rotatably connected to the machine body 1. The synchronous shaft 221 is coaxially fixedly connected with the second gear 22, and a third gear 141 is coaxially fixedly provided on one end of the synchronous shaft 221 close to the machine body 1. The third gear 141 is meshed with the first rack 14. Through this meshing transmission structure of the gear and the rack, the opening and closing of the protective cover 2 and the movement of the machine tool processing part are linked.

[0040] Reference Figure 2 and Figure 5Specifically, the protective cover 2 drives the second rack 21 to move in the direction of closing the protective cover 2. Due to the meshing relationship between the second gear 22 and the second rack 21, the second gear 22 will rotate accordingly, and the second gear 22 will drive the synchronous shaft 221 to rotate. The third gear 141 will also rotate with the rotation of the synchronous shaft 221, and the first rack 14 will move in the direction of closing the protective cover 2 accordingly. Due to the meshing relationship between the first gear 13 and the first rack 14, the first gear 13 will rotate accordingly, and the first gear 13 drives the screw 121 to rotate, and the screw 121 rotates to drive the tool holder 12 to move in the direction of the workpiece. On the contrary, when the protective cover 2 is opened, the screw 121 reverses to drive the tool holder 12 to move away from the workpiece.

[0041] Reference Figure 3 , a limit frame 16 is provided on the movable seat 11, and the limit frame 16 is used to limit the first rack 14, and a pressure plate 161 is provided in the limit frame 16. A trapezoidal block can be provided on the side of the first rack 14 close to the pressure plate 161, and a corresponding trapezoidal groove is provided on the pressure plate 161. The pressure plate 161 and the first rack 14 are slidably connected along the axis of rotation of the workpiece, and the width of the upper part of the trapezoidal block is greater than the width of the lower part, so that the first rack 14 will not be separated from the pressure plate 161 in the vertical direction. A first elastic member 162 is provided between the side of the pressure plate 161 away from the first gear 13 and the limit frame 16. In the natural state of the first elastic member 162, the first rack 14 does not mesh with the first gear 13. This structural setting ensures that under normal circumstances, the first rack 14 will not interfere with the normal processing of the machine tool, further increasing the safety and ease of use of the machine tool.

[0042] Reference Figure 2 and Figure 3 When the tool holder 12 is required to approach or move away from the workpiece, the first rack 14 can be meshed with the first gear 13 by operating the pressing plate 161. Specifically, the pressing plate 161 is slidably connected to the limit frame 16 in the vertical direction, and the first rack 14 is located between the first gear 13 and the pressing plate 161. When the pressing plate 161 is moved downward by an external force, the first elastic member 162 is compressed and the first rack 14 is pushed to mesh with the first gear 13, thereby triggering the tool holder 12 to approach or move away from the workpiece.

[0043] Reference Figure 4 and Figure 5 A pressure rod 3 is provided on the side of the first rack 14 away from the first gear 13. A pressure wheel 31 is rotatably connected to one end of the pressure rod 3 close to the first rack 14. The axial direction of the pressure wheel 31 is the same as the axial direction of the first gear 13, and the side wall of the pressure wheel 31 is in contact with the first rack 14. The pressure wheel 31 can reduce the friction force when the first rack 14 moves in the horizontal direction. A support plate 34 is sleeved on the pressure rod 3, and the support plate 34 is fixedly connected to the fuselage 1. The pressure rod 3 is slidably connected to the support plate 34 in the vertical direction, and the support plate 34 can improve the stability of the pressure rod 3.

[0044] Reference Figure 4 and Figure 6 The end of the pressure rod 3 away from the first rack 14 is an inclined surface 33, the height of the inclined surface 33 gradually increases along the sliding direction when the protective cover 2 is opened, and the protective cover 2 is just separated from the inclined surface 33 when it is closed. A sliding groove 17 is opened in the side wall of the fuselage 1, and a second elastic member 32 is arranged in the sliding groove 17. One end of the second elastic member 32 abuts against the fuselage 1, and the other end of the second elastic member 32 abuts against the pressure rod 3. In the natural state of the second elastic member 32, the lowest side of the inclined surface 33 is located below the inner wall of the protective cover 2, and the highest side of the inclined surface 33 is located above the inner wall of the protective cover 2. When the protective cover 2 is opened, the inclined surface 33 is squeezed, driving the pressure rod 3 to move downward, and the pressure rod 3 drives the first rack 14 to mesh with the first gear 13 and the third gear 141, thereby realizing the linkage between the protective cover 2 and the movable seat 11; when the protective cover 2 is closed, the second elastic member 32 returns the pressed pressure rod 3 to its original position through its own elasticity, and the first rack 14 is away from the first gear 13 and the third gear 141, which will not interfere with the normal processing of the machine tool, further increasing the safety and ease of use of the machine tool. The size of the inclined surface 33 and the distance between the first rack 14 and the first gear 13 are calculated, so that the first rack 14 meshes with the first gear 13 and the third gear 141 while the protective cover 2 squeezes the inclined surface 33, and the first rack 14 can also mesh with the first gear 13 and the third gear 141 when the protective cover 2 completely squeezes the inclined surface 33.

[0045] The implementation principle of a machine tool with a protective function in an embodiment of the present application is as follows: when the protective cover 2 is opened, the inclined surface 33 is squeezed to drive the pressure rod 3 to move downward, and the pressure rod 3 drives the first rack 14 to engage with the first gear 13 and the third gear 141 to realize the linkage between the protective cover 2 and the movable seat 11, and the protective cover 2 drives the second rack 21 to move in the direction of opening the protective cover 2. Due to the meshing relationship between the second gear 22 and the second rack 21, the second gear 22 will rotate accordingly, and the second gear 22 will drive the synchronous shaft 221 to rotate, and the third gear 141 will also rotate with the rotation of the synchronous shaft 221, and the first rack 14 will move in the direction of opening the protective cover 2. Due to the meshing relationship between the first gear 13 and the first rack 14, the first gear 13 will rotate accordingly, and the first gear 13 drives the screw 121 to rotate, and the screw 121 rotates to drive the tool seat 12 to move away from the workpiece. When the protective cover 2 is closed, the second elastic member 32 returns the pressed pressure rod 3 to its original position through its own elasticity, the first rack 14 moves away from the first gear 13 and the third gear 141, and the screw 121 reverses to drive the tool seat 12 to move toward the workpiece. At this time, the tool on the tool seat 12 cannot process the workpiece, reducing injuries to workers caused by splashing iron chips and improving safety.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A machine tool with a protective function, comprising a machine body (1) and a protective cover (2), characterized in that: The protective cover (2) is arranged outside the machine body (1) and is slidably connected to the machine body (1) along the direction of the workpiece rotation axis. A movable seat (11) is provided on the machine body (1). A tool seat (12) is provided at the upper end of the movable seat (11). A screw rod (121) is threadedly connected to the tool seat (12). The tool seat (12) moves along a direction perpendicular to the workpiece rotation axis. A first gear (13) for driving the screw rod (121) to rotate is sleeved on one end of the screw rod (121) close to the protective cover (2). The first gear (13) rotates with the movable seat (11). The first gear (13) is meshed with a first rack (14); a second rack (21) is provided on a side of the protective cover (2) close to the movable seat (11); the second rack (21) is meshed with a second gear (22); a synchronizing shaft (221) rotatably connected to the body (1) is provided on the body (1); the synchronizing shaft (221) is coaxially fixedly connected to the second gear (22); a third gear (141) is coaxially fixedly provided on one end of the synchronizing shaft (221) close to the body (1); the third gear (141) is meshed with the first rack (14).

2. A machine tool with a protective function according to claim 1, characterized in that: A feed seat (15) is slidably connected to the movable seat (11) in a direction perpendicular to the rotation axis of the workpiece, the tool seat (12) is slidably connected to the feed seat (15), the screw rod (121) is rotationally connected to the feed seat (15), a convex strip (122) is circumferentially provided at one end of the screw rod (121) close to the protective cover (2), a groove corresponding to the convex strip (122) is provided on the first gear (13), and the screw rod (121) is slidably connected to the first gear (13) along its own axial direction.

3. The machine tool with protection function according to claim 1, characterized in that: The movable seat (11) is provided with a limit frame (16), a pressure plate (161) is provided in the limit frame (16), a first elastic member (162) is provided between the side of the pressure plate (161) away from the first gear (13) and the limit frame (16), the first rack (14) is not meshed with the first gear (13) in a natural state of the first elastic member (162), the pressure plate (161) is slidably connected to the limit frame (16) along a vertical direction, the first rack (14) is located between the first gear (13) and the pressure plate (161), and the limit frame (16) and the pressure plate (161) are both slidably connected to the first rack (14) along a rotation axis direction of the workpiece.

4. The machine tool with protection function according to claim 1, characterized in that: A pressure rod (3) is provided at one end of the first rack (14) away from the first gear (13); an end of the pressure rod (3) close to the first rack (14) is rotatably connected to a pressure wheel (31); the axial direction of the pressure wheel (31) is the same as the axial direction of the first gear (13); a side wall of the pressure wheel (31) is in contact with the first rack (14); and an end of the pressure rod (3) away from the first rack (14) is slidably connected to the body (1) along a vertical direction.

5. A machine tool with a protective function according to claim 4, characterized in that: The end of the pressure rod (3) away from the first rack (14) is an inclined surface (33), the height of the inclined surface (33) gradually increases along the sliding direction when the protective cover (2) is opened, a sliding groove (17) is provided in the side wall of the fuselage (1), a second elastic member (32) is provided in the sliding groove (17), one end of the second elastic member (32) is in contact with the fuselage (1), and the other end of the second elastic member (32) is in contact with the pressure rod (3), and when the second elastic member (32) is in a natural state, the lowest side of the inclined surface (33) is located between the outer wall of the fuselage (1) and the corresponding inner wall of the protective cover (2).

6. A machine tool with a protective function according to claim 4, characterized in that: A support plate (34) is sleeved on the pressure rod (3), the support plate (34) is fixedly connected to the fuselage (1), and the pressure rod (3) is slidably connected to the support plate (34) along the vertical direction.

7. The machine tool with protection function according to claim 1, characterized in that: Two protective covers (2) are provided, and the two protective covers (2) are symmetrically arranged. The protective covers (2) are provided with a plurality of magnets (23) at the joints of the two protective covers (2), and a handle (24) is provided on the protective cover (2).

8. The machine tool with protection function according to claim 1, characterized in that: A fourth gear (18) is rotatably connected to the fuselage (1), the axis direction of the fourth gear (18) is perpendicular to the side wall of the fuselage (1) on which the fourth gear (18) is provided, the fourth gear (18) is meshed with a third rack (25) and a fourth rack (26), the third rack (25) and the fourth rack (26) are parallel to each other and are respectively located on both sides of the fourth gear (18), and the third rack (25) and the fourth rack (26) are fixedly connected to different protective covers (2).

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