CN211939144U - Bench drill convenient to for flange hole milling - Google Patents

Abstract

The utility model discloses a bench drill convenient for milling holes of flanges, which belongs to the technical field of tools for machining the bench drill, and comprises a frame, wherein a horizontal working platform is fixedly arranged on the frame, a drill bit is arranged above and vertical to the working platform, the drill bit is driven by a motor, and a material transferring device is also arranged on the working platform; the rotating device comprises a rotating shaft, a positioning plate, a ratchet mechanism and a rocker, the rotating shaft is perpendicular to the workbench and is rotatably connected with the workbench, the positioning plate is coaxially and fixedly connected to the rotating shaft, a positioning pin is arranged above the positioning plate and perpendicular to the positioning plate, a ratchet of the ratchet mechanism is coaxially and fixedly connected with the rotating shaft, the ratchet is arranged below the working platform, a pawl of the ratchet mechanism is hinged to the rocker, and the rocker is perpendicular to the rotating shaft and is rotatably connected with the rotating shaft. Through above-mentioned scheme, can make flange and the coaxial rotation of pivot through the swing rocker, easy operation, the workman of being convenient for rotates the flange, has promoted the process velocity.

Description

Bench drill convenient to for flange hole milling

Technical Field

The utility model belongs to the technical field of the frock is used in the bench drill processing, especially, relate to a bench drill convenient to for flange hole milling.

Background

The drilling machine is a machine tool which mainly uses a drill to machine a hole on a workpiece. Typically the drill bit is rotated into a primary motion and the drill bit is moved axially into a feed motion. The drilling machine is simple in structure, relatively low in machining precision, capable of drilling through holes and blind holes, replacing special cutters and capable of reaming, countersinking and reaming or tapping. In the machining process, the workpiece is fixed, the drill bit is moved, the center of the drill bit is aligned with the center of the hole, and the drill bit is rotated. The drilling machine is characterized in that a workpiece is fixed and a drill bit rotates.

When the flange is machined, a plurality of through holes need to be drilled in the axial direction of the flange, burrs are formed on two sides of each through hole after the rotary machine drills the through holes, and therefore the drill bit with the larger diameter is used for machining chamfers (namely milling the through holes) on two sides of each through hole, and the burrs are removed. At present, when the chamfer angle is machined on the flange, a workpiece is placed on a working platform, and then each hole is moved to the position below a drill bit through manual hand rotation. The worker has one hand for turning the flange and one hand for controlling the bench drill.

Most of the current flanges are metal pieces, so that the weight is heavier, a worker needs to be responsible for controlling the bench drill by one hand when milling holes, only one hand is left for rotating the flanges, the flanges are freely placed on a working platform, the axle centers of the flanges are not positioned, and the worker can not easily make the through holes align the drill bits of the bench drill by rotating the flanges, so that the machining speed is slow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bench drill convenient to for flange hole milling, the operation workman that can be convenient for rotates the flange and makes the flange rotate along the axle center of self, does not need the axle center location of giving the flange again, has improved machining efficiency.

The utility model discloses a can realize through following technical scheme:

a bench drill convenient for milling holes on flanges comprises a rack, wherein a horizontal working platform is fixedly arranged on the rack, a drill bit is arranged above the working platform and is vertical to the working platform, the drill bit is driven by a motor, and a material rotating device is further arranged on the working platform;

the rotating device comprises a rotating shaft, a positioning plate, a ratchet mechanism and a rocker, the rotating shaft is perpendicular to the working platform and is rotatably connected with the working platform, the positioning plate is coaxially and fixedly connected to the rotating shaft, a positioning pin is arranged above the positioning plate and perpendicular to the positioning plate, a ratchet of the ratchet mechanism is coaxially and fixedly connected with the rotating shaft, the ratchet is arranged below the working platform, a pawl of the ratchet mechanism is hinged to the rocker, and the rocker is perpendicular to the rotating shaft and is rotatably connected with the rotating shaft.

Through the technical scheme, the flange is placed on the positioning plate, and the positioning pin of the positioning plate is inserted into the through hole of the flange, so that the flange can be coaxially arranged on the rotating shaft; the rocker is rotated along the positive direction of the ratchet wheel, so that the positioning plate can be driven to rotate, and the flange can be rotated; the ratchet wheel is arranged below the working platform, so that the ratchet wheel is prevented from influencing the rotation of the rotating shaft; when the through hole of the flange rotates to the position right below the drill bit, the flange can be milled; the rocker is rotated along the reverse direction of the ratchet wheel, so that the flange cannot be driven to rotate, and the rocker is returned; the operation flow is simple, the flange is convenient for workers to rotate, and the processing speed is improved.

Further, be provided with glide machanism on the locating plate, glide machanism includes lead screw and slider, has seted up the spout on the locating plate, the axle center of spout perpendicular to pivot, and the slider is connected with the spout cooperation, has seted up threaded hole on the slider, and the lead screw is connected with the screw hole cooperation, and the lead screw rotates with the locating plate to be connected, and locating pin fixed connection is on the slider.

Through above-mentioned technical scheme, rotate the lead screw and can adjust the distance of locating pin to the pivot for the locating plate can the different flanges of diameter of adaptation.

Furthermore, the end of the positioning pin connected with the sliding block is provided with an external thread, the sliding block is provided with an internal thread, and the positioning pin is connected with the sliding block through a thread.

Through above-mentioned technical scheme, the locating pin can be followed the slider and lifted off, and the through-hole diameter of the flange when processing is different, can come the different flange of adaptation through the locating pin of changing different diameters.

Furthermore, the circumferential surface of the positioning pin is provided with a connecting block which is in a regular hexagon shape.

Through above-mentioned technical scheme, the lower part of locating pin is equivalent to a bolt, when installing the locating pin on the locating plate, can screw up the locating pin through the spanner, prevents when giving the flange hole milling that the locating pin drops on the locating plate.

Furthermore, the locating plate is provided with a mounting groove, the direction of the mounting groove is the same as that of the sliding groove, and the depth of the mounting groove is larger than or equal to the thickness of the connecting block.

Through the technical scheme, when the positioning pin is installed, a wrench can be used in the installation groove, so that the installation of the positioning pin is facilitated; meanwhile, the depth of the mounting groove is larger than or equal to the thickness of the connecting block, and after the positioning pin is mounted, the upper surface of the connecting block cannot be higher than the upper surface of the positioning plate, so that the stability of the flange on the positioning plate cannot be influenced.

Furthermore, the upper part of the positioning pin is provided with a chamfer.

Through the technical scheme, when the flange is placed on the positioning plate, even if the axis of the through hole of the flange is not completely aligned with the positioning pin, the positioning pin can be completely inserted into the through hole of the flange through the chamfer, so that the flange can be positioned and installed conveniently.

Furthermore, a thrust bearing is arranged between the working platform and the positioning plate, the thrust bearing is coaxial with the rotating shaft, one surface of the thrust bearing is abutted to the positioning plate, and the other surface of the thrust bearing is abutted to the working platform.

Through the technical scheme, the positioning plate is prevented from directly rubbing with the working platform, sliding friction is converted into rolling friction, friction force is reduced, and the positioning plate is convenient to rotate.

Further, a skirt edge is arranged on the circumferential surface of the positioning plate, and the skirt edge extends from the lower surface of the positioning plate to the direction of the working platform.

Through above-mentioned technical scheme, make thrust bearing receive the shirt rim protection, the piece that drops when having reduced the hole milling gets into thrust bearing's probability, has prolonged thrust bearing's life.

Furthermore, one end of the rocker, which is far away from the rotating shaft, is hinged with a handle, a limiting groove is formed in the rocker, and a limiting block is arranged on the handle and can be matched and connected with the limiting groove; the circumference of locating plate is fixed and is provided with U type card, and U type card can with handle joint.

Through the technical scheme, the handle can rotate along the hinge shaft, when the flange needs to be rotated, the handle is unfolded, the limiting block is abutted to the limiting groove, and the handle and the rocker are in the same straight line, so that a worker can conveniently rotate the flange; when the flange needs to be replaced, the handle is rotated, so that the handle is clamped in the U-shaped clamp, and the handle is prevented from interfering the operation of workers.

To sum up, with current technical contrast, the beneficial effects of the utility model are as follows:

1. through the setting of changeing the material device, the flange can be coaxially placed on the locating plate, and the swing rocker can make flange and pivot rotate moreover, is convenient for the flange hole milling.

2. Through the arrangement of the mounting groove and the connecting block, a worker can use a wrench when replacing the positioning pin, the mounting and the dismounting are more convenient, and the mounting of the positioning pin is more stable; meanwhile, the installation groove is formed, so that the upper surface of the connecting block is not higher than the upper surface of the positioning plate, and the flatness of the flange on the positioning plate is not influenced.

3. Through the setting of reasoning bearing, convert the sliding friction between locating plate and the work platform into rolling friction, reduced frictional force, the rotation of the locating plate of being convenient for.

4. Through the setting of U type card and handle, can expand the handle when rotating the flange, the workman of being convenient for rotates the flange, can be again when changing the flange, with the handle joint in U type card, avoid the handle to disturb workman's operation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of A in FIG. 1;

FIG. 4 is a schematic view of a partial structure for illustrating the position of the thrust bearing and the position of the positioning pin after the installation;

fig. 5 is a partially enlarged view of B in fig. 2.

Reference numerals: 1. a frame; 11. a drill bit lever; 2. a working platform; 3. a drill bit; 4. a material transferring device; 41. a rotating shaft; 42. positioning a plate; 421. mounting grooves; 422. a skirt edge; 43. a ratchet mechanism; 431. a ratchet wheel; 432. a pawl; 44. a rocker; 441. a handle; 442. a limiting block; 443. a limiting groove; 5. a sliding mechanism; 51. a lead screw; 52. a chute; 53. a slider; 6. positioning pins; 61. connecting blocks; 7. a thrust bearing; 8. a U-shaped card.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the present embodiment provides a bench drill convenient to flange rotates, including frame 1, generally with welding or with bolt fixed connection horizontal work platform 2 in frame 1, upper and perpendicular to work platform 2 is provided with drill bit 3 on work platform 2, and drill bit 3 passes through motor drive, still includes commentaries on classics material device 4 on work platform 2.

Referring to fig. 1 and 2, the material transferring device 4 includes a rotating shaft 41, a positioning plate 42, a ratchet mechanism 43 and a rocker 44, a through hole is formed in the center of the workbench, and the rotating shaft 41 penetrates through the through hole to be rotatably connected with the workbench. The positioning plate 42 is connected to the rotating shaft 41 by spot welding or pin fixing, so that the positioning plate 42 and the rotating shaft 41 can rotate coaxially, and the positioning pin 6 is arranged above the positioning plate 42. The ratchet 431 of the ratchet mechanism 43 is coaxially connected with the rotating shaft 41 in a key connection mode, and the ratchet 431 is arranged below the working platform 2 so as not to influence the rotation of the positioning plate 42; the pawl 432 of the ratchet mechanism 43 is hinged to the rocker 44, and a shaft sleeve is vertically welded at one end of the rocker 44 close to the pawl 432, so that the shaft sleeve is sleeved on the circumference of the rotating shaft 41, and the rocker 44 and the rotating shaft 41 can be mutually and rotatably connected.

Referring to fig. 3, in order to enable the positioning plate 42 to be adapted to flanges of various types, the distance from the positioning column to the axis of the rotating shaft 41 and the diameter of the positioning column need to be adjusted. Therefore, the positioning plate 42 is provided with a sliding mechanism 5 capable of adjusting the distance from the positioning column to the axis of the rotating shaft 41. The sliding mechanism 5 comprises a lead screw 51 and a slide block 53, and the positioning pin 6 is fixed on the slide block 53; the positioning plate 42 is provided with a sliding slot 52, the opening direction of the sliding slot 52 is perpendicular to the axis of the rotating shaft 41, and the sliding block 53 slides in the sliding slot 52. The slider 53 is provided with a threaded hole in the sliding direction, the lead screw 51 is in threaded fit with the slider 53, the lead screw 51 and the positioning plate 42 can only rotate along the axis of the lead screw 51, so that the slider 53 can move in the sliding groove 52 only by rotating the lead screw 51, and the purpose of adjusting the distance from the positioning column to the axis of the rotating shaft 41 is achieved.

An internal thread is formed at the joint of the sliding block 53 and the positioning column, an external thread is arranged at the joint of the positioning column and the sliding block 53, and the positioning column is in threaded connection with the sliding block 53, so that the positioning column can be detached. The diameter of motionless reference column external screw thread is the same, but the position diameter that the reference column can insert the flange through-hole is different, consequently changes the different through-hole diameters of reference column promptly adaptable flange.

Referring to fig. 3 and 4, the end of the positioning pin 6 away from the slider 53 is chamfered so that the head of the positioning pin 6 is tapered. When the through hole of the flange needs to be inserted into the positioning pin 6, even if the through hole of the flange is not completely aligned with the positioning pin 6, the conical head of the positioning pin 6 can be partially inserted into the through hole of the flange; and then the flange is slightly shaken, so that the through hole of the flange is completely sleeved in the positioning pin 6.

In order to fasten the positioning column to the slider 53, a hexagonal connecting block 61 is provided on the circumferential surface of the positioning pin 6, and a single bolt is formed on the entire lower portion of the positioning pin 6. The positioning pin 6 may be a bolt welded below one pin head, or the whole positioning pin 6 may be formed at one time. The regular hexagonal connecting block 61 facilitates the use of a wrench to tighten the positioning pin 6 on the slider 53.

However, in order to ensure the flatness of the positioning plate 42, the flange can be stably placed on the positioning plate 42, and therefore, the positioning plate 42 is provided with the mounting groove 421. The mounting groove 421 is disposed above the sliding groove 52, that is, the mounting groove 421 is disposed at present, and the sliding groove 52 is further disposed on the bottom surface of the mounting groove 421. The length of the mounting groove 421 is the same as that of the sliding groove 52, but the width of the mounting groove 421 is slightly wider. Since the whole connecting block 61 is embedded in the mounting groove 421, the depth of the mounting groove 421 is greater than the thickness of the connecting block 61; the connecting block 61 is embedded in the mounting groove 421 and can be screwed by a wrench, so that the width of the mounting groove 421 can at least meet the requirement that the positioning pin 6 is screwed in the mounting groove 421 by a box wrench.

Referring to fig. 4, in order to enable a worker to rotate the positioning plate 42 more easily, a thrust bearing 7 is disposed between the positioning plate 42 and the working platform 2, the thrust bearing 7 is coaxial with the rotating shaft 41, the upper surface of the thrust bearing 7 abuts against the positioning plate 42, and the shrimp larvae of the thrust bearing 7 abut against the working platform 2.

In order to prevent the chips generated during hole milling from entering the thrust bearing 7, a circle of skirt 422 (shown in fig. 1) is welded to the positioning plate 42 in the axial direction, and the skirt 422 extends from the lower surface of the positioning plate 42 to the working platform 2 to wrap the thrust bearing 7 in the formed cavity.

Referring to fig. 2 and 5, after completing the hole milling of one flange, a worker needs to remove the flange and replace it with another unprocessed flange, so the worker needs to approach the working platform 2 to apply force conveniently. Therefore, a handle 441 is hinged to one side of the rocker 44 away from the rotating shaft 41, and the U-shaped clamp 8 is welded to the circumferential direction of the working platform 2. Handle 441 rotates along the articulated shaft, packs up handle 441 and blocks in U type card 8, can make things convenient for the workman to be close to the workstation. The handle 441 is integrally formed with a limit block 442, and the rocking bar 44 is provided with a limit groove 443; the handle 441 is unfolded, the limit block 442 abuts against the limit groove 443 to limit the handle 441 to rotate continuously, and at the moment, the handle 441 and the rocker 44 are in the same straight line, so that a worker can conveniently rotate the positioning plate.

The implementation principle of the embodiment is as follows:

when the flange needs to be milled by a bench drill, firstly, a positioning pin 6 with the same diameter as the through hole of the flange is selected, and a double offset ring spanner is used for screwing the positioning pin on the sliding block 53; then, the screw 51 is rotated to adjust the distance between the positioning pin 6 and the rotating shaft 41; then, the flange is placed on the positioning plate 42, and the positioning pins 6 on the positioning plate 42 are inserted into the two through holes of the flange, so that the flange is coaxial with the rotating shaft 41; namely, the flange tooling is completed;

when the flange is rotated, the handle 441 is unfolded firstly, so that the handle 441 and the rocker 44 are coaxial; then, the worker rotates the handle 441 with a straight hand with the rotating shaft 41 as an axis to rotate the flange 6; when a through hole of the flange rotates to the position right below the drill bit 3, the handle 441 rotates reversely, so that the handle 441 and the rocker 44 are reset, due to the arrangement of the ratchet mechanism 43, the flange cannot rotate along with the handle 441, meanwhile, the other hand of a worker controls the drill bit control lever 11, and the drill bit 3 is lowered to mill a hole on the flange; after the holes are milled, workers can rotate the handle 441, hands do not need to be replaced midway, operation of the workers is facilitated, steps are smoothly connected, and machining speed is increased; after a flange is machined, the handle 441 is folded and clamped in the U-shaped clamp 8, and a worker can approach the workbench to take the flange down.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. A bench drill convenient for milling holes of flanges comprises a rack (1), wherein a horizontal working platform (2) is fixedly arranged on the rack (1), a drill bit (3) is arranged above the working platform (2) and vertical to the working platform (2), the drill bit (3) is driven by a motor, and a material transferring device (4) is further arranged on the working platform (2);

the material transferring device is characterized in that the material transferring device (4) comprises a rotating shaft (41), a positioning plate (42), a ratchet mechanism (43) and a rocker (44), the rotating shaft (41) is perpendicular to the working platform (2) and is rotatably connected with the working platform (2), the positioning plate (42) is coaxially and fixedly connected to the rotating shaft (41), a positioning pin (6) is arranged above the positioning plate (42) and perpendicular to the positioning plate (42), a ratchet wheel (431) of the ratchet mechanism (43) is coaxially and fixedly connected with the rotating shaft (41), the ratchet wheel (431) is arranged below the working platform (2), a pawl (432) of the ratchet mechanism (43) is hinged to the rocker (44), and the rocker (44) is perpendicular to the rotating shaft (41) and is rotatably connected with the rotating shaft.

2. The bench drill convenient to mill a hole on a flange according to claim 1, wherein a sliding mechanism (5) is arranged on the positioning plate (42), the sliding mechanism (5) comprises a lead screw (51) and a sliding block (53), a sliding groove (52) is formed in the positioning plate (42), the sliding groove (52) is perpendicular to the axis of the rotating shaft (41), the sliding block (53) is connected with the sliding groove (52) in a matched manner, a threaded hole is formed in the sliding block (53), the lead screw (51) is connected with the threaded hole in a matched manner, the lead screw (51) is rotatably connected with the positioning plate (42), and the positioning pin (6) is fixedly connected with the sliding block (53).

3. The bench drill convenient for milling holes in flanges according to claim 2, wherein the end of the positioning pin (6) connected with the sliding block (53) is provided with an external thread, the sliding block (53) is provided with an internal thread, and the positioning pin (6) is connected with the sliding block (53) through the thread.

4. A bench drill for facilitating the milling of flanges according to claim 3, characterized in that the circumferential surface of the positioning pin (6) is provided with a connecting block (61), and the connecting block (61) is regular hexagonal.

5. The bench drill convenient for milling holes in flanges according to claim 4, wherein the positioning plate (42) is provided with an installation groove (421), the direction of the installation groove (421) is the same as the direction of the sliding groove (52), and the depth of the installation groove (421) is greater than or equal to the thickness of the connecting block (61).

6. Bench drill for facilitating the milling of flanges according to any of claims 1-5, characterised in that the upper part of the positioning pin (6) is provided with a chamfer.

7. The bench drill convenient for milling holes in flanges according to claim 1, wherein a thrust bearing (7) is arranged between the working platform (2) and the positioning plate (42), the thrust bearing (7) is coaxial with the rotating shaft (41), one surface of the thrust bearing (7) is abutted against the positioning plate (42), and the other surface of the thrust bearing (7) is abutted against the working platform (2).

8. The bench drill for facilitating the milling of a flange according to claim 7, characterized in that the positioning plate (42) is provided with a skirt (422) on the circumferential surface, the skirt (422) extending from the lower surface of the positioning plate (42) in the direction of the working platform (2).

9. The bench drill convenient for milling holes in flanges according to claim 1, wherein a handle (441) is hinged to one end of the rocker (44) away from the rotating shaft (41), a limiting groove (443) is formed in the rocker (44), a limiting block (442) is arranged on the handle (441), and the limiting block (442) can be connected with the limiting groove (443) in a matched manner; the positioning plate (42) is fixedly provided with a U-shaped clamp (8) in the circumferential direction, and the U-shaped clamp (8) can be clamped with the handle (441).

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