Portable boring machine

Abstract

The utility model relates to a portable boring machine relates to boring machine technical field, it includes base, the base on the sliding drive motor of setting, the output shaft of drive motor fixedly sets up boring bar, boring bar is away from drive motor one end fixedly sets up a set of mounting block, rotates and sets up the mounting shaft between mounting block, fixedly sets up the rotary arm on the mounting shaft, fixedly sets up the tool holder on the rotary arm, sets up the turning tool on the right side wall of tool holder, the mounting block is away from boring bar one end fixedly sets up the abutting piece, the abutting piece is away from the mounting block one end and sets up the inclined plane, the tool holder one side fixedly sets up the limit block towards the mounting block, the limit block is away from the left inclined plane and right inclined plane of tool holder one side and sets up, the left inclined plane is connected with right inclined plane, the left inclined plane and the inclined plane exist the interval clearance between, the right inclined plane is used for with the abutment of inclined plane. The present application has reduced the situation that turning tool scratches the hole wall, improves the effect that workpiece boring quality.

Description

Technical Field

[0001] This utility model relates to the field of boring machine technology, and in particular to a portable boring machine. Background Technology

[0002] A boring machine is a mechanical device used for milling the inner wall of a hole. It uses a rotating cutting tool to cut the hole wall of the workpiece to improve the dimensional accuracy, surface finish, and shape accuracy of the hole wall.

[0003] During the machining process of the workpiece hole wall, after the machining is completed, the cutting tool needs to be withdrawn from the workpiece hole groove. During the withdrawal process, due to the certain tolerance of the workpiece inner hole, the tip of the cutting tool is prone to contact with the workpiece hole wall, causing scratches on the workpiece hole wall and thus affecting the accuracy of the machined surface of the workpiece inner hole. Utility Model Content

[0004] In order to reduce the occurrence of tool scratches on the hole wall and improve the boring quality of the workpiece, this application provides a portable boring machine.

[0005] The portable boring machine provided in this application adopts the following technical solution:

[0006] A portable boring machine includes a base, a drive motor slidably mounted on the base, a boring bar fixedly mounted on the output shaft of the drive motor, a set of mounting blocks fixedly mounted on the end of the boring bar away from the drive motor, a mounting shaft rotatably mounted between the mounting blocks, a rotating arm fixedly mounted on the mounting shaft, a tool holder fixedly mounted on the rotating arm, a turning tool mounted on the right side wall of the tool holder, an abutment block fixedly mounted on the end of the mounting block away from the boring bar, an inclined surface formed on the end of the abutment block away from the mounting block, a limiting block fixedly mounted on the side of the tool holder facing the mounting block, a left inclined surface and a right inclined surface formed on the side of the limiting block away from the tool holder, the left inclined surface and the right inclined surface being connected, a clearance existing between the left inclined surface and the inclined surface, and the right inclined surface being used to abut against the inclined surface.

[0007] By adopting the above technical solution, when the cutting tool is inserted into the slot for machining, the drive motor slides along the base to move the cutting tool deeper into the slot. At the same time, the drive motor starts to drive the cutting tool to rotate, achieving the effect of machining the workpiece hole wall. During the process of the cutting tool being inserted into the slot, the resistance exerted by the hole wall on the cutting tool causes the right inclined surface to abut against the inclined surface, making it difficult for the tool holder to continue rotating. At this time, the cutting tool abuts against the hole wall for machining. When the cutting tool is removed from the slot, the resistance exerted by the hole wall on the cutting tool forces the right inclined surface to separate from the inclined surface. At the same time, the clearance between the left inclined surface and the inclined surface provides rotation space for the tool holder, thereby causing the tool holder to rotate and drive the cutting tool to tilt up, reducing the friction between the cutting tool and the hole wall, reducing the possibility of the cutting tool scratching the hole wall, and improving the boring quality of the workpiece.

[0008] Preferably, the side of the inclined surface closest to the end wall of the boring bar is on the same side as the left side wall of the tool holder; the side of the inclined surface furthest from the end wall of the boring bar is on the same side as the right side wall of the tool holder; the side of the left inclined surface furthest from the right inclined surface is on the same side as the left side wall of the tool holder; the side of the left inclined surface furthest from the end wall of the tool holder is on the same side as the left side wall of the tool holder; the side of the right inclined surface furthest from the left inclined surface is on the same side as the right side wall of the tool holder; and the side of the right inclined surface closest to the end wall of the tool holder is on the same side as the right side wall of the tool holder.

[0009] By adopting the above technical solution, when the cutting tool moves into the depth of the slot, there is a clearance between the left inclined surface and the inclined surface, and the right inclined surface abuts against the inclined surface. At the same time, the cutting tool is subjected to resistance from the right inclined surface to the inclined surface. Therefore, the right inclined surface is pressed against the inclined surface, making it difficult for the rotating arm to drive the tool holder to rotate. When the cutting tool moves out from the depth of the slot, the cutting tool is subjected to resistance from the inclined surface to the right inclined surface. At this time, the clearance between the left inclined surface and the inclined surface provides rotation space, allowing the right inclined surface to separate from the inclined surface, thus achieving the effect of the rotating arm rotating to drive the cutting tool to lift.

[0010] Preferably, a motor base is fixedly installed at the bottom of the drive motor, and a set of guide rods are installed through the motor base. The guide rods are slidably connected to the motor base and fixedly connected to the base. A threaded hole is opened through the motor base, and a lead screw is inserted into the threaded hole. The lead screw and the guide rod are parallel to each other. The lead screw is threadedly connected to the threaded hole and rotatably connected to the base.

[0011] By adopting the above technical solution, the rotation of the lead screw drives the motor base to slide along the guide rod, and the sliding of the motor base drives the drive motor to move.

[0012] Preferably, an equipment box is fixedly mounted on the base, and a drive shaft is driven through the equipment box. The drive shaft is rotatably connected to the side wall of the equipment box. One end of the drive shaft located outside the equipment box is fixedly connected to one end of a lead screw. A second sprocket is fixedly mounted on the other end of the drive shaft located inside the equipment box. A drive motor is fixedly mounted on the equipment box, and a first sprocket is fixedly mounted on the output shaft of the drive motor. A drive chain is fitted on both the first and second sprockets, and both the first and second sprockets mesh with the drive chain.

[0013] By adopting the above technical solution, the drive motor starts and drives the first sprocket to rotate, the rotation of the first sprocket drives the drive chain to move, the movement of the drive chain drives the second sprocket to rotate, the rotation of the second sprocket drives the drive shaft to rotate, and the rotation of the drive shaft drives the lead screw to rotate.

[0014] Preferably, a first support is rotatably provided at the end of the lead screw away from the drive shaft, and a second support is provided on the side of the first support away from the motor base. The guide rod passes through the first support and the second support, and the second support is slidably connected to the guide rod. A lower support is detachably provided between the first support and the second support, and an upper support is detachably provided on the lower support.

[0015] By adopting the above technical solution, the workpiece is fixed by the lower support and the upper support. The lower support and the upper support are replaced according to the size of the workpiece.

[0016] Preferably, the first support has several first threaded holes, and the lower support has several first threaded grooves on the side facing the first support. A first bolt is provided in both the first threaded holes and the first threaded grooves. The first bolt passes through the first threaded holes and is threadedly connected to the first threaded grooves.

[0017] By adopting the above technical solution, the lower support is detachably connected to the first support through the first bolt.

[0018] Preferably, the second support has several second threaded holes, and the lower support has several second threaded grooves on the side facing the second support. A second bolt is provided in both the second threaded holes and the second threaded grooves. The second bolt passes through the second threaded holes and is threadedly connected to the second threaded grooves.

[0019] By adopting the above technical solution, the lower support is detachably connected to the second support through the second bolt.

[0020] Preferably, the lower support has several threaded holes, and the upper support has several through holes. A third bolt is provided in both the through holes and the threaded holes. The third bolt passes through the through holes and is threadedly connected to the threaded holes.

[0021] By adopting the above technical solution, the lower support is detachably connected to the upper support through the third bolt.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up a base, drive motor, boring bar, mounting block, mounting shaft, rotating arm, tool holder, cutting tool, abutment block, inclined surface, limit block, left inclined surface, right inclined surface and clearance, the friction between the cutting tool and the hole wall is reduced, the situation of the cutting tool scratching the hole wall is reduced, and the boring quality of the workpiece is improved;

[0024] 2. By setting the motor base, guide rod, threaded hole and lead screw, the drive motor is slidably mounted on the base;

[0025] 3. By setting up a first support, a second support, a lower support, and an upper support, it is convenient to fix the workpiece during processing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a portable boring machine according to an embodiment of this application.

[0027] Figure 2 yes Figure 1 Enlarged view of section A.

[0028] Figure 3 This is a schematic diagram illustrating the connection between the tool holder and the boring bar in the embodiments of this application.

[0029] Figure 4 This is a schematic diagram illustrating the positional relationship between the abutment block and the inclined surface in an embodiment of this application.

[0030] Figure 5 This is a schematic diagram illustrating the positional relationship between the left and right inclined planes in an embodiment of this application.

[0031] Figure 6 This is a schematic diagram illustrating the positional relationship between the abutment block and the limiting block in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram illustrating the connection relationship between the motor mount and the base in an embodiment of this application.

[0033] Figure 8 This is a schematic diagram illustrating the connection relationship between the drive motor and the drive shaft in an embodiment of this application.

[0034] Figure 9 This is a cross-sectional view illustrating the connection relationship between the upper and lower supports in the embodiments of this application.

[0035] Figure 10 This is a cross-sectional view illustrating the connection relationship between the first support and the lower support in the embodiments of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Base; 11. Guide rod; 12. Lead screw; 2. Drive motor; 21. Motor mount; 211. Threaded hole; 3. Boring bar; 31. Mounting block; 32. Mounting shaft; 4. Tool holder; 41. Lathe tool; 42. Rotating arm; 43. Left side wall; 44. Right side wall; 5. Clearance; 51. Abutment block; 511. Inclined surface; 52. Limiting block; 521. Left inclined surface; 522. Right inclined surface; 6. Setting 61. Cargo box; 62. Drive shaft; 63. Drive motor; 64. Drive chain; 65. First sprocket; 66. Second sprocket; 7. First support; 71. First screw hole; 72. First bolt; 8. Second support; 81. Second screw hole; 82. Second bolt; 9. Third bolt; 91. Upper support; 911. Upper through hole; 92. Lower support; 921. Lower screw hole; 923. First screw groove; 924. Second screw groove. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0038] This application discloses a portable boring machine. (Refer to...) Figures 1 to 6The assembly includes a base 1, on which a drive motor 2 is slidably mounted. A boring bar 3 is fixedly mounted on the output shaft of the drive motor 2. A set of mounting blocks 31 are fixedly mounted on the end of the boring bar 3 away from the drive motor 2. A mounting shaft 32 is rotatably connected between the mounting blocks 31, and the end wall of the mounting shaft 32 is rotatably connected to the side wall of the mounting blocks 31. A rotating arm 42 is fixedly mounted on the mounting shaft 32, and a tool holder 4 is mounted on the end of the rotating arm 42 away from the mounting shaft 32. One side of the tool holder 4 is a left side wall 43, and the other side is a right side wall 44. A turning tool 41 is mounted on the right side wall 44. When the tool holder 4 rotates clockwise, the rotation direction of the tool holder 4 is from the left side wall 43 to the right side wall 44; when the tool holder 4 rotates counterclockwise, the rotation direction of the tool holder 4 is from the right side wall 44 to the left side wall 43. An abutment block 51 is mounted on the end of the mounting block 31 away from the boring bar 3, and an inclined surface 511 is formed on the end of the abutment block 51 away from the mounting block 31. The side of the inclined surface 511 closest to the end wall of the boring bar 3 is on the same side as the left side wall 43 of the tool holder 4, and the side of the inclined surface 511 furthest from the end wall of the boring bar 3 is on the same side as the right side wall 44 of the tool holder 4. A limiting block 52 is installed on the side of the tool holder 4 facing the mounting block 31. A left inclined surface 521 and a right inclined surface 522 are formed on the side of the limiting block 52 furthest from the tool holder 4. The left inclined surface 521 is connected to the right inclined surface 522, and both the left and right inclined surfaces 521 are opposite to the inclined surface 511. The side of the left inclined surface 521 furthest from the right inclined surface 522 is on the same side as the left side wall 43 of the tool holder 4, and the side of the left inclined surface 521 furthest from the end wall of the tool holder 4 is on the same side as the left side wall 43 of the tool holder 4. The side of the right inclined surface 522 furthest from the left inclined surface 521 is on the same side as the right side wall 44 of the tool holder 4, and the side of the right inclined surface 522 closest to the end wall of the tool holder 4 is on the same side as the right side wall 44 of the tool holder 4. A clearance 5 exists between the left inclined surface 521 and the inclined surface 511, and the right inclined surface 522 abuts against the inclined surface 511. When the cutting tool 41 is inserted into the slot for machining, the drive motor 2 slides along the base 1, driving the cutting tool 41 deeper into the slot. Simultaneously, the drive motor 2 starts the cutting tool 41 to rotate, achieving the effect of machining the workpiece hole wall. During the process of the cutting tool 41 being inserted into the slot, a clearance 5 exists between the left inclined surface 521 and the inclined surface 511, and the right inclined surface 522 abuts against the inclined surface 511. At the same time, the cutting tool 41 experiences resistance from the right inclined surface 522 towards the inclined surface 511. At this time, the resistance encountered by the cutting tool 41 causes the tool holder 4 to tend to rotate clockwise. However, since the limiting block 52 is pressed against the inclined surface 511 of the abutment block 51 by the right inclined surface 522, the rotating arm 42 does not easily drive the tool holder 4 to rotate, thus keeping the cutting tool 41 against the hole wall for machining. When the cutting tool 41 moves out from the depth of the hole groove, the cutting tool 41 is resisted by the inclined surface 511 towards the right inclined surface 522. At this time, the resistance encountered by the cutting tool 41 causes the tool holder 4 to tend to rotate counterclockwise.Since the clearance 5 between the left inclined surface 521 and the inclined surface 511 provides rotation space for the tool holder 4, the rotating arm 42 drives the tool holder 4 to rotate, causing the right inclined surface 522 to separate from the inclined surface 511. This achieves the effect of the rotating arm 42 rotating and causing the cutting tool 41 to lift. This reduces the friction between the cutting tool 41 and the hole wall, reduces the possibility of the cutting tool 41 scratching the hole wall, and improves the boring quality of the workpiece.

[0039] To allow the drive motor 2 to slide on the base 1, refer to Figures 1 to 8 A motor base 21 is mounted on the bottom of the drive motor 2. A set of guide rods 11 are threaded through the motor base 21 and slidably connected to the motor base 21. The guide rods 11 are also fixedly mounted on the base 1. A threaded hole 211 is opened through the motor base 21, and a lead screw 12 is inserted into the threaded hole 211. The lead screw 12 is threadedly connected to the threaded hole 211, and is parallel to the guide rods 11. The lead screw 12 is rotatably connected to the base 1. An equipment box 6 is mounted on the base 1. A drive shaft 61 is threaded through the equipment box 6 and rotatably connected to the side wall of the equipment box 6. The end of the drive shaft 61 located outside the equipment box 6 is welded to the end of the lead screw 12, and a second sprocket 632 is mounted on the end of the drive shaft 61 located inside the equipment box 6. A drive motor 62 is mounted on the equipment box 6, and a first sprocket 631 is mounted on the output shaft of the drive motor 62. A transmission chain 63 is mounted on both the first sprocket 631 and the second sprocket 632, and both sprockets 631 and 632 mesh with the transmission chain 63. When the drive motor 62 starts, it drives the first sprocket 631 to rotate. The rotation of the first sprocket 631 moves the transmission chain 63, which in turn moves the second sprocket 632. The rotation of the second sprocket 632 then drives the drive shaft 61 to rotate, which in turn drives the lead screw 12 to rotate. The rotation of the lead screw 12 causes the motor mount 21 to slide along the guide rod 11, and this sliding motion of the motor mount 2 moves the drive motor 2.

[0040] To facilitate fixing the workpiece during machining, refer to Figures 7 to 10A first support 7 is rotatably mounted on the end of the lead screw 12 away from the drive shaft 61, and a second support 8 is mounted on the side of the first support 7 away from the motor base 21. A guide rod 11 passes through the first support 7 and the second support 8, and the second support 8 is slidably connected to the guide rod 11. A lower support 92 is installed between the first support 7 and the second support 8, and an upper support 91 is installed on the lower support 92. Several first threaded holes 71 are formed through the first support 7, and several first threaded grooves 923 are formed on the side of the lower support 92 facing the first support 7. A first bolt 72 is provided in both the first threaded holes 71 and the first threaded grooves 923. The first bolt 72 passes through the first threaded holes 71 and is threadedly connected to the first threaded grooves 923. The lower support 92 is detachably connected to the first support 7 through the first bolt 72. The second support 8 has several second threaded holes 81 extending through it. The lower support 92 has several second threaded grooves 924 on the side facing the second support 8. A second bolt 82 is fitted into both the second threaded holes 81 and the second threaded grooves 924. The second bolt 82 passes through the second threaded holes 81 and is threaded into the second threaded grooves 924, allowing the lower support 92 to be detachably connected to the second support 8. The lower support 92 has several lower threaded holes 921 extending through it. The upper support 91 has several upper through holes 911 extending through it. A third bolt 9 is fitted into both the upper through holes 911 and the lower threaded holes 921. The third bolt 9 passes through the upper through holes 911 and is threaded into the lower threaded holes 921, allowing the lower support 92 to be detachably connected to the upper support 91. The workpiece is fixed to the upper support 91 via the lower support 92. The lower support 92 and the upper support 91 are replaced according to the size of the workpiece.

[0041] The implementation principle of a portable boring machine according to an embodiment of this application is as follows: When the cutting tool 41 is inserted into the hole groove for machining, the drive motor 2 slides along the base 1 to drive the cutting tool 41 to move deeper into the hole groove. At the same time, the drive motor 2 starts to drive the cutting tool 41 to rotate, thereby achieving the effect of machining the hole wall of the workpiece. During the process of the cutting tool 41 being inserted into the hole groove, there is a clearance gap 5 between the left inclined surface 521 and the inclined surface 511, and the right inclined surface 522 abuts against the inclined surface 511. At the same time, the cutting tool 41 is subjected to resistance from the right inclined surface 522 to the inclined surface 511. At this time, the resistance experienced by the cutting tool 41 causes the tool holder 4 to tend to rotate clockwise. However, since the limiting block 52 is pressed against the inclined surface 511 of the abutment block 51 by the right inclined surface 522, the rotating arm 42 does not easily drive the tool holder 4 to rotate, thereby keeping the cutting tool 41 abutting against the hole wall for machining. When the cutting tool 41 moves out from the depth of the hole, it encounters resistance from the inclined surface 511 to the right inclined surface 522. This resistance causes the tool holder 4 to tend to rotate counterclockwise. Since the clearance 5 between the left inclined surface 521 and the inclined surface 511 provides rotation space for the tool holder 4, the rotating arm 42 drives the tool holder 4 to rotate, causing the right inclined surface 522 to separate from the inclined surface 511. This achieves the effect of the rotating arm 42 lifting the cutting tool 41. This reduces the friction between the cutting tool 41 and the hole wall, minimizing the possibility of the cutting tool 41 scratching the hole wall and improving the boring quality of the workpiece.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable boring machine, comprising a base, a drive motor slidably mounted on the base, and a boring bar fixedly mounted on the output shaft of the drive motor, characterized in that: A set of mounting blocks is fixedly installed at the end of the boring bar away from the drive motor. A mounting shaft is rotatably installed between the mounting blocks. A rotating arm is fixedly installed on the mounting shaft. A tool holder is fixedly installed on the rotating arm. A turning tool is installed on the right side wall of the tool holder. An abutment block is fixedly installed at the end of the mounting block away from the boring bar. An inclined surface is formed at the end of the abutment block away from the mounting block. A limiting block is fixedly installed on the side of the tool holder facing the mounting block. A left inclined surface and a right inclined surface are formed on the side of the limiting block away from the tool holder. The left inclined surface and the right inclined surface are connected. There is a clearance between the left inclined surface and the inclined surface. The right inclined surface is used to abut against the inclined surface.

2. The portable boring machine according to claim 1, characterized in that: The side of the inclined surface closest to the end wall of the boring bar is on the same side as the left side wall of the tool holder; the side of the inclined surface furthest from the end wall of the boring bar is on the same side as the right side wall of the tool holder; the side of the left inclined surface furthest from the right inclined surface is on the same side as the left side wall of the tool holder; the side of the left inclined surface furthest from the end wall of the tool holder is on the same side as the left side wall of the tool holder; the side of the right inclined surface furthest from the left inclined surface is on the same side as the right side wall of the tool holder; and the side of the right inclined surface closest to the end wall of the tool holder is on the same side as the right side wall of the tool holder.

3. A portable boring machine according to claim 1, characterized in that: A motor base is fixedly installed at the bottom of the drive motor. A set of guide rods is installed through the motor base. The guide rods are slidably connected to the motor base and fixedly connected to the base. A threaded hole is opened through the motor base. A lead screw is inserted into the threaded hole. The lead screw and the guide rod are parallel to each other. The lead screw is threadedly connected to the threaded hole and rotatably connected to the base.

4. A portable boring machine according to claim 3, characterized in that: An equipment box is fixedly mounted on the base. A drive shaft is driven through the equipment box and rotatably connected to the side wall of the equipment box. One end of the drive shaft outside the equipment box is fixedly connected to one end of a lead screw. A second sprocket is fixedly mounted on the other end of the drive shaft inside the equipment box. A drive motor is fixedly mounted on the equipment box. A first sprocket is fixedly mounted on the output shaft of the drive motor. A drive chain is fitted on both the first and second sprockets, and both the first and second sprockets mesh with the drive chain.

5. A portable boring machine according to claim 4, characterized in that: The lead screw is rotatably mounted on a first support at the end away from the drive shaft, and a second support is mounted on the side of the first support away from the motor base. The guide rod passes through the first and second supports, and the second support is slidably connected to the guide rod. A lower support is detachably mounted between the first and second supports, and an upper support is detachably mounted on the lower support.

6. A portable boring machine according to claim 5, characterized in that: The first support has several first threaded holes, and the lower support has several first threaded grooves on the side facing the first support. A first bolt is provided in both the first threaded holes and the first threaded grooves. The first bolt passes through the first threaded holes and is threadedly connected to the first threaded grooves.

7. A portable boring machine according to claim 5, characterized in that: The second support has several second threaded holes, and the lower support has several second threaded grooves on the side facing the second support. A second bolt is provided in both the second threaded holes and the second threaded grooves. The second bolt passes through the second threaded hole and is threadedly connected to the second threaded groove.

8. A portable boring machine according to claim 5, characterized in that: The lower support has several threaded holes, and the upper support has several through holes. A third bolt is provided in both the through holes and the threaded holes. The third bolt passes through the through holes and is threadedly connected to the threaded holes.

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