Multi-stage speed regulation bench drill easy to disassemble and assemble

Abstract

The utility model provides a multistage speed regulation bench drill easy to disassemble and assemble, which comprises a main machine, a connecting shaft, a motor, a wheel disc, a belt and a connecting disc, the motor is fixed on the main machine, a power shaft of the motor is connected with the wheel disc, the connecting shaft is rotatably connected on the main machine and used for driving a drill bit to rotate, and the connecting shaft is connected with the connecting disc. Adjusting grooves are formed in the wheel disc, the multiple adjusting grooves are distributed in the axial direction of the wheel disc, the inner diameters of the multiple adjusting grooves are gradually increased from one end of the wheel disc to the other end of the wheel disc, one end of the belt is rotationally connected into one adjusting groove, the other end of the belt is rotationally connected to the connecting disc, and the purpose of improving practicability is achieved.

Description

Technical Field

[0001] The utility model relates to a bench drill, in particular to an easily disassembled and assembled multi-stage speed-regulating bench drill. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN219837196U discloses a bench drill, which includes a frame, a rotating shaft and a protective cover. The rotating shaft rotates around its own axis and is connected to the frame, and the rotating shaft is used for connecting a drill bit. The protective cover is connected to the frame, and the protective cover is provided with a working chamber, which penetrates the protective cover along the axial direction of the rotating shaft, and the working chamber is used for the rotating shaft to extend into, and the working chamber is used to accommodate the drill bit connected to the rotating shaft.

[0003] During the drilling process, strips of chips are generated, which rotate with the rotation of the drill bit. At this point, the rotating chips are located within the working chamber, and the protective cover prevents personnel from approaching the rotating chips, thereby reducing the risk of scratches from the chips. The motor drives the connecting shaft via a disc, which in turn rotates the disc via a belt. The disc drives the connecting shaft, which in turn drives the drill bit. The connecting shaft's rotational speed and the disc's rotational speed have only a single matching ratio, which cannot adapt to the production needs of different parts and is therefore not very practical. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an easily disassembled and assembled multi-stage speed-regulating bench drill to achieve the purpose of improving practicality.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an easily disassembled multi-stage speed-regulating bench drill, comprising a main unit, a connecting shaft, a motor, a wheel disc, a belt, and a connecting disc, wherein the motor is fixed to the main unit, the power shaft of the motor is connected to the wheel disc, the connecting shaft is rotatably connected to the main unit and is used to drive the drill bit to rotate, the connecting shaft is connected to the connecting disc, an adjustment slot is provided on the wheel disc, and multiple adjustment slots are distributed along the axial direction of the wheel disc, and the inner diameter of multiple adjustment slots gradually increases from one end of the wheel disc to the other end of the wheel disc, one end of the belt is rotatably connected to an adjustment slot, and the other end of the belt is rotatably connected to the connecting disc.

[0006] By implementing the above technical solution and connecting the belt to the adjustment grooves at different positions, the rotation speed of the connecting shaft and the rotation speed of the wheel can have multiple ratios to meet different production needs and achieve the purpose of improving practicality.

[0007] As a preferred solution of the present invention, the main unit is supported by a support column, a support seat is slidably connected to the support column, a support platform is connected to the support seat, a locking groove is provided on the support seat, a first connecting part and a second connecting part are fixedly connected to the support seat and are respectively located on both sides of the locking groove, a locking bolt is rotatably connected to the first connecting part, and the locking bolt is threadedly connected to the second connecting part.

[0008] To implement the above technical solution, the support seat is moved along the length direction of the support column, and the support platform moves synchronously with the support seat. The locking bolt is rotated to cause the second connecting part to move closer to the first connecting part, so that the locking groove is reduced. The support seat tightens the support column, and the friction force generated realizes the positioning of the support seat, so that the support platform can adapt to parts of different sizes and improve practicality.

[0009] As a preferred solution of the present invention, the support seat is rotatably connected to a first gear and a second gear, the support column is fixedly connected to a rack, the first gear is meshed with the second gear, the second gear is meshed with the rack, the first gear is connected to a handle, and the handle is rotatably connected to the support seat.

[0010] To implement the above technical solution, the handle drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear moves along the length direction of the rack, so that the support seat can move along the length direction of the support column to facilitate adjustment of the height position of the support seat and the support platform.

[0011] As a preferred solution of the present invention, the support platform is rotatably connected to the support seat through a support shaft, a plurality of positioning holes are provided on the support platform, and the plurality of positioning holes are arranged along the axis of the support shaft, a fixing hole is provided on the support seat, a positioning bolt is passed through the positioning hole, and the positioning bolt is threadedly connected to the fixing hole.

[0012] To implement the above technical solution, the support platform is rotated along the axis of the support shaft so that the positioning hole corresponds to the fixing hole, and then the positioning bolt is passed through the positioning hole and threadedly connected to the fixing hole. The positioning of the support platform is achieved through the interference between the positioning bolt and the inner wall of the positioning hole and the supporting force of the support shaft, so that the support platform can adapt to parts of different shapes, further improving practicality.

[0013] As a preferred solution of the present invention, a keyway is provided on the power shaft, a mounting groove is provided on the inner wall of the wheel disc, and a flat key for embedding in the keyway is slidably connected in the mounting groove via an elastic structure.

[0014] To implement the above technical solution, press the flat key into the installation groove, and put the wheel disc on the power shaft. When the key groove corresponds to the flat key, the elastic force of the elastic structure causes the flat key to be embedded in the key groove, thereby realizing the connection between the power shaft and the wheel disc, which is easy to operate.

[0015] As a preferred solution of the present invention, the elastic structure includes an elastic part, a sliding rod and a sliding hole, one end of the elastic part is connected to the inner wall of the mounting groove, and the other end is connected to the flat key, the sliding rod is fixed on the inner wall of the mounting groove, the sliding hole is opened on the flat key, and the sliding rod is slidably connected to the sliding hole.

[0016] To implement the above technical solution, the slide rod is slidably connected to the slide hole, making the flat key move more smoothly.

[0017] As a preferred solution of the present invention, a connecting hole connected to the mounting groove is provided on the wheel disc, an inclined groove is provided on the flat key, a pressure plate is slidably connected in the connecting hole, and the pressure plate interferes with the inclined groove and presses the flat key into the mounting groove.

[0018] To implement the above technical solution, the pressing plate is passed through the connecting hole and abuts against the inclined groove, and then the pressing plate can be pressed into the installation groove to facilitate replacement of the wheel disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the external structure in the embodiment;

[0020] Figure 2 To reflect the structural diagram of the support seat;

[0021] Figure 3 To reflect the structural diagram of the power shaft;

[0022] Figure 4 To reflect the structural diagram of the adjustment tank;

[0023] Figure 5 A schematic diagram showing the structure of the roulette wheel;

[0024] Figure 6 This is a schematic diagram showing the cross-sectional structure of a flat key;

[0025] Figure 7 A cross-sectional schematic diagram showing a fixing hole;

[0026] Figure 8 A schematic diagram of the cross-sectional structure of the connecting disk.

[0027] Figure markings: 1. main engine; 2. connecting shaft; 3. motor; 31. power shaft; 32. wheel; 33. adjustment slot; 4. connecting disk; 51. keyway; 52. mounting slot; 6. elastic structure; 61. elastic member; 62. slide rod; 63. slide hole; 64. connecting hole; 65. pressure plate; 66. inclined slot; 7. support column; 71. support seat; 72. support platform; 73. locking slot; 74. first connecting part; 75. second connecting part; 76. locking bolt; 77. first gear; 78. second gear; 79. handle; 791. rack; 8. support shaft; 81. positioning hole; 82. fixing hole; 83. positioning bolt. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0029] An easily disassembled multi-speed adjustable bench drill comprises a main unit 1, a connecting shaft 2, a motor 3, a wheel disc 32, a belt, and a connecting disc 4. The motor 3 is fixed to the main unit 1 and arranged vertically, and a power shaft 31 of the motor 3 is connected to the wheel disc 32, and the power shaft 31 and the wheel disc 32 are arranged coaxially.

[0030] A keyway 51 is provided on the side wall of the power shaft 31. The keyway 51 is a waist-shaped groove. A mounting groove 52 is provided on the inner wall of the wheel disc 32. A flat key for being embedded in the keyway 51 is slidably connected in the mounting groove 52 through the elastic structure 6.

[0031] The elastic structure 6 comprises an elastic member 61, a slide rod 62, and a slide hole 63. The elastic member 61 is a spring, with one end connected to the inner wall of the mounting slot 52 and the other end fixedly connected to a flat key. The slide rod 62 is fixed to the inner wall of the mounting slot 52, and the slide hole 63 is defined in the flat key. The slide rod 62 slides into the slide hole 63. The two slide rods 62 are arranged in parallel, with their lengths parallel to the depth of the mounting slot 52.

[0032] The wheel disc 32 has a connecting hole 64 that communicates with the mounting slot 52. The connecting hole 64 has a square cross-section. The flat key has an oblique slot 66. A pressure plate 65 slidably connects to the connecting hole 64. The pressure plate 65 engages the oblique slot 66 and presses the flat key into the mounting slot 52, allowing the wheel disc 32 to be removed from the power shaft 31.

[0033] The connecting shaft 2 is rotatably connected to the main machine 1 and is used to drive the drill bit to rotate. The axis of the connecting shaft 2 is parallel to the axis of the power shaft 31. The connecting shaft 2 and the connecting disk 4 are coaxially arranged and fixedly connected.

[0034] The wheel disc 32 is provided with a plurality of coaxially arranged adjustment slots 33. The adjustment slots 33 are distributed along the axial direction of the wheel disc 32, and the inner diameters of the adjustment slots 33 gradually increase from one end of the wheel disc 32 to the other end of the wheel disc 32. One end of the belt is rotatably connected to one of the adjustment slots 33, and the other end of the belt is rotatably connected to the connecting disc 4.

[0035] By connecting the belt to the adjustment slots 33 at different positions, different rotational speeds of the connecting shaft 2 can be achieved to adapt to the production requirements of different parts and improve practicality.

[0036] The main unit 1 is supported by a cylindrical support column 7, to which a support base 71 is slidably connected. A support platform 72 is connected to the support base 71. A locking groove 73 is defined in the support base 71, connecting the outer and inner walls of the support base 71. A first connecting portion 74 and a second connecting portion 75 are fixedly connected to the support base 71, located on either side of the locking groove 73. A locking bolt 76 is rotatably connected to the first connecting portion 74, which is threadedly connected to the second connecting portion 75.

[0037] A first gear 77 and a second gear 78 are rotatably connected to the support base 71. A rack 791 is fixedly connected to the support column 7, with the length of the rack 791 being parallel to the length of the support column 7. The first gear 77 is meshed with the second gear 78, and the second gear 78 is meshed with the rack 791. A handle 79 is connected to the first gear 77 and is rotatably connected to the support base 71.

[0038] The support platform 72 is rotatably connected to the support base 71 via a support shaft 8. The support platform 72 is provided with a plurality of positioning holes 81, which are evenly spaced along the axis of the support shaft 8. The support column 7 is arranged vertically, and the support shaft 8 is arranged horizontally. A fixing hole 82 is provided in the support base 71. A positioning bolt 83 is inserted into the positioning hole 81 and is threadedly connected to the fixing hole 82.

[0039] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An easily detachable multi-stage speed-regulating bench drill, comprising a main unit (1), a connecting shaft (2), a motor (3), a wheel disc (32), a belt, and a connecting disc (4), wherein the motor (3) is fixed to the main unit (1), a power shaft (31) of the motor (3) is connected to the wheel disc (32), the connecting shaft (2) is rotatably connected to the main unit (1) and is used to drive the drill bit to rotate, and the connecting shaft (2) is connected to the connecting disc (4), and is characterized in that: The wheel disc (32) is provided with an adjustment groove (33), and a plurality of the adjustment grooves (33) are distributed along the axial direction of the wheel disc (32). The inner diameters of the plurality of adjustment grooves (33) gradually increase from one end of the wheel disc (32) to the other end of the wheel disc (32). One end of the belt is rotatably connected to an adjustment groove (33), and the other end of the belt is rotatably connected to the connecting disc (4).

2. The easily detachable multi-stage speed-regulating bench drill according to claim 1, characterized in that: The host (1) is supported by a support column (7), a support seat (71) is slidably connected to the support column (7), a support platform (72) is connected to the support seat (71), a locking groove (73) is provided on the support seat (71), a first connecting portion (74) and a second connecting portion (75) are fixedly connected to the support seat (71) and are respectively located on both sides of the locking groove (73), a locking bolt (76) is rotatably connected to the first connecting portion (74), and the locking bolt (76) is threadedly connected to the second connecting portion (75).

3. The easily detachable multi-stage speed-regulating bench drill according to claim 2, characterized in that: The support base (71) is rotatably connected to a first gear (77) and a second gear (78); the support column (7) is fixedly connected to a rack (791); the first gear (77) is meshed with the second gear (78); the second gear (78) is meshed with the rack (791); the first gear (77) is connected to a handle (79); and the handle (79) is rotatably connected to the support base (71).

4. The easily detachable multi-stage speed-regulating bench drill according to claim 2, characterized in that: The support platform (72) is rotatably connected to the support seat (71) through the support shaft (8); a plurality of positioning holes (81) are provided on the support platform (72); the plurality of positioning holes (81) are arranged along the axis of the support shaft (8); a fixing hole (82) is provided on the support seat (71); a positioning bolt (83) is passed through the positioning hole (81); and the positioning bolt (83) is threadedly connected to the fixing hole (82).

5. The easily detachable multi-stage speed-regulating bench drill according to claim 1, characterized in that: A keyway (51) is provided on the power shaft (31), and a mounting groove (52) is provided on the inner wall of the wheel disc (32). A flat key for embedding in the keyway (51) is slidably connected in the mounting groove (52) via an elastic structure (6).

6. The easily detachable multi-stage speed-regulating bench drill according to claim 5, characterized in that: The elastic structure (6) includes an elastic member (61), a sliding rod (62) and a sliding hole (63). One end of the elastic member (61) is connected to the inner wall of the mounting groove (52), and the other end is connected to the flat key. The sliding rod (62) is fixed on the inner wall of the mounting groove (52). The sliding hole (63) is opened on the flat key, and the sliding rod (62) is slidably connected to the sliding hole (63).

7. The easily detachable multi-stage speed-regulating bench drill according to claim 6, characterized in that: The wheel disc (32) is provided with a connecting hole (64) communicating with the mounting groove (52), the flat key is provided with an inclined groove (66), a pressure plate (65) is slidably connected in the connecting hole (64), and the pressure plate (65) contacts the inclined groove (66) and presses the flat key into the mounting groove (52).

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