Positioning device of bench drilling machine

Abstract

The utility model relates to the technical field of bench drilling machine devices, in particular to a positioning device of a bench drilling machine, which comprises a bottom plate, a support frame fixedly mounted at the upper end of the bottom plate, a movable rod slidably mounted at the front end of the support frame, a driving motor fixedly mounted at the front end of the movable rod, and a drill bit fixedly mounted on an output shaft of the driving motor and used for drilling holes. A movable plate is arranged above the bottom plate and arranged on the outer surfaces of the movable column and the connecting column in a sleeving mode, a moving plate is slidably installed at the upper end of the movable plate, and a lifting device is arranged between the bottom plate and the movable plate, so that the workpiece is extruded in the opposite direction of drilling, the stability of the workpiece can be improved, and vibration of a drill bit in the machining process is reduced; the extrusion workpiece can help to keep correct alignment of the drill bit and the workpiece, the drill bit is prevented from deviating due to uneven stress, the position precision of a hole is ensured, and therefore the machining precision of the hole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bench drill devices, and specifically relates to a positioning device for a bench drill. Background Technique

[0002] A bench drill refers to a small drill that can be placed on a workbench with a vertically arranged spindle. During the use of an existing bench drill, operations such as pressing and positioning the workpiece are required. At the same time, when performing multi-hole processing on the workpiece, the workpiece needs to be moved.

[0003] After a large amount of retrieval, it is found that the prior art publication number is CN 219275100 U, which discloses a positioning device for a bench drill, including: a drill bench, on the top of which there is a drill bit, and a processing plate is arranged on the drill bench; a positioning component for fixing the processing plate is arranged on the upper surface of the drill bench, and a first positioning frame is arranged on one side of the drill bench, and a second positioning frame is arranged on the front surface of the first positioning frame; the sliding component includes a lead screw, a slider, a servo motor and two limiting rods, the slider is threadedly connected to the outer wall of the lead screw through a nut seat, and the output end of the servo motor is drivingly connected to one end of the lead screw. The utility model uses the setting method of cooperating the positioning component, the first positioning frame, the second positioning frame and the sliding component, which is convenient for the position of the processing plate to be stable, convenient for the cross-axis and longitudinal-axis sliding of the positioning component, and convenient for the stable movement of the processing plate, so that it is not necessary to manually position and adjust the position of the processing plate, and improves the functionality of the bench drill.

[0004] Therefore, based on the above retrieval and combined with the existing ones, during the process of drilling holes in the workpiece, since the workpiece needs to be stably supported during the drilling process, otherwise vibrations will occur. The vibrations will cause the drill bit to deviate from the predetermined path during the processing, resulting in a reduction in the position accuracy of the hole. At the same time, the vibrations may also cause the hole diameter to be inconsistent, that is, the so-called "hole expansion" phenomenon. Due to the unstable cutting force generated when the drill bit contacts the workpiece, the vibrations will form irregular burrs at the edge of the hole, and these burrs will affect the quality and accuracy of subsequent assembly. Therefore, the above method does not provide stable support for the workpiece. For this reason, we propose a positioning device for a bench drill. Content of the Utility Model

[0005] The purpose of the utility model is to provide a positioning device for a bench drill to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A positioning device for a bench drill, comprising a base plate, a support frame is fixedly installed at the upper end of the base plate, a movable rod is slidably installed at the front end of the support frame, a driving motor is fixedly installed at the front end of the movable rod, and a drill bit for drilling is fixedly installed on the output shaft of the driving motor. A connecting column is slidably installed at the upper end of the base plate. An activity column is arranged on the side of the connecting column close to the support frame, and the activity column is slidably connected to the upper end of the base plate. An activity plate is arranged above the base plate, and the activity plate is sleeved on the outer surfaces of the activity column and the connecting column. A moving plate is slidably installed at the upper end of the activity plate. A lifting device is arranged between the base plate and the activity plate.

[0007] As a further scheme of the present utility model, a compression cylinder is fixedly installed at the right end of the support frame, and a piston rod is inserted through the inside of the compression cylinder.

[0008] As a further scheme of the present utility model, the upper end of the piston rod is detachably installed with the upper end of the movable rod, and the movable rod can drive the piston rod to move up and down when moving up and down.

[0009] As a further scheme of the present utility model, the lifting device includes a lifting cylinder, the lifting cylinder is fixedly installed at the upper end of the base plate, and there are four lifting cylinders, which are evenly distributed at the four corners of the upper end of the base plate.

[0010] As a further scheme of the present utility model, the above-mentioned lifting cylinders are all interconnected through conduction pipes, the conduction pipes are fixedly connected to the bottom end of the compression cylinder through output pipes, and a passive plug is slidably installed at the inner end of the lifting cylinder.

[0011] As a further scheme of the present utility model, a horizontal lead screw is rotatably installed at the upper end of the base plate, the connecting column is threadedly sleeved on the outer surface of the horizontal lead screw, a vertical lead screw is rotatably installed at the bottom end of the activity plate, and the bottom end of the moving plate is threadedly sleeved on the outer surface of the vertical lead screw.

[0012] Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. By squeezing the air in the compression cylinder, the air is transmitted to the air chamber at the inner end of the lifting cylinder along the output pipe and the conduction pipe. As the air in the air chamber increases, the bottom end of the passive plug is pushed upward, so that the activity plate moves along the outer surfaces of the connecting column and the activity column. Furthermore, by squeezing the workpiece in the opposite direction of drilling, the stability of the workpiece can be increased, the vibration of the drill bit during the processing can be reduced, squeezing the workpiece can help maintain the correct alignment between the drill bit and the workpiece, prevent the drill bit from shifting due to uneven force, ensure the position accuracy of the hole, and thus improve the machining accuracy of the hole;

[0015] 2. The extrusion effect can reduce the plastic deformation of the workpiece material during drilling, thereby reducing the burrs at the hole mouth and hole wall, improving the quality of the machined surface. At the same time, extruding the workpiece can help the chips to be discharged more quickly, avoid chip jams, and improve the drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a positioning device for a bench drill;

[0017] Figure 2 It is a schematic left view structural diagram of a positioning device for a bench drill;

[0018] Figure 3 It is a schematic structural diagram of the disassembly between the movable plate and the bottom plate;

[0019] Figure 4 It is a schematic structural diagram of the support frame;

[0020] Figure 5 It is a schematic structural diagram of the lifting cylinder.

[0021] In the figure: 1. Bottom plate; 2. Compression cylinder; 3. Movable rod; 31. Rocker; 4. Driving motor; 5. Drill bit; 6. Support frame;

[0022] 101. Movable plate; 102. Horizontal lead screw; 103. Vertical adjustment shaft; 104. Moving plate; 105. Horizontal adjustment shaft; 106. Connecting column; 107. Movable column; 108. Vertical lead screw;

[0023] 201. Piston rod; 202. Output pipe;

[0024] 301. Lifting cylinder; 302. Conducting pipe; 303. Universal ball; 304. Passive plug; 305. Air chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: Please refer to Figures 1 to 3, A positioning device for a bench drill, comprising a base plate 1. A support frame 6 is fixedly installed at the upper end of the base plate 1. A movable rod 3 is slidably installed at the front end of the support frame 6. A driving motor 4 is fixedly installed at the front end of the movable rod 3 by bolts, and a drill bit 5 for drilling is fixedly installed at the output shaft of the driving motor 4 by bolts;

[0027] Specifically, a rocker 31 is rotatably installed at the front end of the support frame 6, and the rocker 31 is located above the support frame 6. A rack is fixedly installed at the left end of the movable rod 3. A gear is fixedly installed at one end of the rocker 31 close to the movable rod 3. The gear meshes with the rack. A rectangular block is fixedly installed on the outer surface of the movable rod 3. A rectangular groove is provided at the connection between the support frame 6 and the movable rod 3. The rectangular block slides in the rectangular groove, thereby realizing the stability of the movable rod 3. When the rocker 31 rotates, the movable rod 3 moves up and down under the action of the meshing between the gear and the rack;

[0028] A connecting column 106 is slidably installed at the upper end of the base plate 1. An activity column 107 is arranged on the side of the connecting column 106 close to the support frame 6, and the activity column 107 is slidably connected to the upper end of the base plate 1. A limit groove is provided at the upper end of the base plate 1. The activity column 107 is slidably installed in the limit groove. The connecting column 106 and the activity column 107 are respectively provided with two, and are distributed on the left and right sides above the base plate 1. An activity plate 101 is arranged above the base plate 1. The activity plate 101 is sleeved on the outer surfaces of the activity column 107 and the connecting column 106. A moving plate 104 is slidably installed at the upper end of the activity plate 101. A lifting device is arranged between the base plate 1 and the activity plate 101.

[0029] Example 2: Please refer to Figure 4 , A positioning device for a bench drill, different from that in Example 1 in that a compression cylinder 2 is fixedly installed at the right end of the support frame 6 by bolts. A piston rod 201 is inserted into the inner side of the compression cylinder 2. The upper end of the piston rod 201 is detachably installed with the upper end of the movable rod 3. When the movable rod 3 moves up and down, it can drive the piston rod 201 to move up and down;

[0030] Please refer to Figure 2 、 3, 4, 5, the lifting device includes a lifting cylinder 301, the lifting cylinder 301 is fixedly installed and welded on the upper end of the bottom plate 1, there are four lifting cylinders 301, and they are evenly distributed at the four corners of the upper end of the bottom plate 1. The lifting cylinders 301 are interconnected through conduction pipes 302. The conduction pipe 302 is fixedly connected to the bottom end of the compression cylinder 2 through an output pipe 202. The conduction pipe 302 is a high-pressure resistant hose. A passive plug 304 is slidably installed inside the lifting cylinder 301, and an air chamber 305 is reserved between the passive plug 304 and the lifting cylinder 301. A sealing rubber ring is fixedly installed on the outer surface of the passive plug 304 to ensure airtightness. A universal ball 303 is sleeved on the upper end of the passive plug 304, and the universal ball 303 abuts against the bottom end of the movable plate 101;

[0031] Please refer to Figure 1 , 2 , 3, a transverse lead screw 102 is rotatably installed on the upper end of the bottom plate 1. The connecting column 106 is threadedly sleeved on the outer surface of the transverse lead screw 102. When the transverse lead screw 102 rotates, it can drive the connecting column 106 to move left and right, so as to realize the left and right movement of the movable plate 101 and the movable column 107 following the connecting column 106. Both the left and right ends of the transverse lead screw 102 are fixedly welded with transverse adjustment shafts 105 for easy grasping. A vertical lead screw 108 is rotatably installed at the bottom end of the movable plate 101. The bottom end of the moving plate 104 is threadedly sleeved on the outer surface of the vertical lead screw 108. When the vertical lead screw 108 rotates, it can drive the moving plate 104 to move left and right above the movable plate 101 (as shown in Figure 2 ). And a vertical adjustment shaft 103 is fixedly welded to the right end of the vertical lead screw 108. By moving the moving plate 104 and the movable plate 101 forward and backward and left and right, the position where the workpiece needs to be drilled can be accurately adjusted.

[0032] Working principle:

[0033] During use, place the workpiece to be drilled on the upper end of the moving plate 104 and make fine adjustments according to the position where drilling is required. At this time, rotate the transverse adjustment shaft 105 to make the movable plate 101 move left and right to adjust the left and right movement direction of the workpiece. Then continue to rotate the vertical adjustment shaft 103 and make the moving plate 104 move forward and backward to adjust the front and rear distance of the workpiece;

[0034] Subsequently, the drive motor 4 is started, and the output shaft of the drive motor 4 drives the drill bit 5 to rotate. Immediately afterwards, the rocker 31 is rotated so that the gear meshes with the rack to realize the up and down movement of the movable rod 3. Along with the up and down movement of the movable rod 3, the piston rod 201 is driven to move downwards. By squeezing the air in the compression cylinder 2, the air is then transmitted to the air chamber 305 at the inner end of the elevation cylinder 301 through the output pipe 202 and the conduction pipe 302. Along with the increase in the air in the air chamber 305, the bottom end of the passive plug 304 is pushed upwards, causing the movable plate 101 to move along the outer surfaces of the connecting column 106 and the movable column 107. Furthermore, by squeezing the workpiece in the opposite direction of the drilling, the stability of the workpiece can be increased, the vibration of the drill bit 5 during the machining process can be reduced, and thus the machining accuracy of the hole can be improved.

[0035] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A positioning device for a benchtop drilling machine, comprising a base plate (1), characterized in that: A support frame (6) is fixedly mounted on the upper end of the base plate (1), a movable rod (3) is slidably mounted on the front end of the support frame (6), a driving motor (4) is fixedly mounted on the front end of the movable rod (3), a drill bit (5) for drilling holes is fixedly mounted on the output shaft of the driving motor (4), a connecting column (106) is slidably mounted on the upper end of the base plate (1), a movable column (107) is arranged on the side of the connecting column (106) close to the support frame (6), and the movable column (107) is slidably connected to the upper end of the base plate (1), a movable plate (101) is arranged above the base plate (1), the movable plate (101) is sleeved on the outer surfaces of the movable column (107) and the connecting column (106), a movable plate (104) is slidably mounted on the upper end of the movable plate (101), and a lifting device is arranged between the base plate (1) and the movable plate (101).

2. A positioning device for a benchtop drilling machine according to claim 1, characterized in that: A compression cylinder (2) is fixedly mounted on the right end of the support frame (6), and a piston rod (201) is passed through the inner side of the compression cylinder (2).

3. The positioning device for a benchtop drilling machine according to claim 2, characterized in that: The upper end of the piston rod (201) and the upper end of the movable rod (3) are detachably mounted, and when the movable rod (3) moves up and down, it can drive the piston rod (201) to move up and down.

4. The positioning device for a benchtop drilling machine according to claim 3, characterized in that: The lifting device comprises a lifting cylinder (301), and the lifting cylinder (301) is fixedly installed on the upper end of the base plate (1). Four lifting cylinders (301) are provided and are evenly distributed at the four corners of the upper end of the base plate (1).

5. The positioning device for a benchtop drilling machine according to claim 4, characterized in that: The lifting cylinders (301) are interconnected via a conducting tube (302), the conducting tube (302) is fixedly connected to the bottom end of the compression cylinder (2) via an output tube (202), and a passive plug (304) is slidably mounted on the inner end of the lifting cylinder (301).

6. The positioning device for a benchtop drilling machine according to claim 1, characterized in that: A transverse screw rod (102) is rotatably mounted on the upper end of the base plate (1), and the connecting column (106) is threadedly sleeved on the outer surface of the transverse screw rod (102). A vertical screw rod (108) is rotatably mounted on the bottom end of the movable plate (101), and the bottom end of the movable plate (104) is threadedly sleeved on the outer surface of the vertical screw rod (108).

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