CN102398058A - Double-headed drilling device - Google Patents

Abstract

The invention discloses a double-head drilling device, which relates to an accessory of a vertical drilling machine, which is suitable for simultaneously processing two holes on a plate on the vertical drilling machine. It includes a gear box, the upper part of the gear box is fixedly connected with a sleeve that can be fixedly connected with the main shaft sleeve of the drilling machine, and the gear box input shaft that can be connected with the drill shank of the drilling machine main shaft is arranged in the sleeve, and the lower part of the gear box is provided with two drill bits. Output shaft; the compression of the workpiece is realized by a cylinder-driven linkage mechanism. Through the transmission of the gear box, the rotary motion of the spindle drill handle of the drilling machine is decomposed into two rotary motions with the same rotation direction and speed, which are output through two output shafts, and the drill bit is installed on the output shaft to realize the double-head drilling function and improve The hole spacing matches the dimensional accuracy and work efficiency; the pneumatic clamping link mechanism realizes the automatic and fast clamping of sheet metal workpieces.

Description

Double head drilling device

technical field

The invention relates to an accessory of a vertical drilling machine, in particular to a double-head drilling device of the vertical drilling machine. It is suitable for processing two holes on the plate at the same time on the vertical drilling machine.

Background technique

In mechanical processing engineering, it is often necessary to drill double holes on the plate. The distance between the two holes has relatively strict matching dimensions, and it is mass produced. It will be very cumbersome, inefficient, and time-consuming to use a common fixture for processing on an ordinary vertical drilling machine.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double-head drilling device capable of simultaneously processing double holes on a plate, so as to improve processing accuracy and work efficiency.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A double-head drilling device, including a gear box, the upper part of the gear box is fixedly connected with a sleeve that can be fixedly connected with the main shaft sleeve of the drilling machine, the sleeve is provided with a gear box input shaft that can be connected with the drill shank of the main shaft of the drilling machine, and the lower part of the gear box is Two output shafts on which drill bits can be installed are provided.

The gear train structure of the gearbox is: the input shaft is fixedly connected with the first gear, the first gear meshes with the second gear and the third gear respectively, the second gear and the third gear mesh with the fourth gear and the fifth gear respectively, and the second gear meshes with the fourth gear and the fifth gear respectively. The fourth gear and the fifth gear are respectively fixedly connected with the two output shafts.

Bearings are installed at the lower ends of the two output shafts, and the bearing seats are arranged on a supporting plate, which is fixedly connected with the gear box through a connecting column; a slotted hole for easy dismounting of the drill bit is provided on the side of the output shaft.

A guide cylinder is fixedly connected to both sides of the gear box and the supporting plate, and a guide shaft is matched with the guide cylinder, and the guide shaft is fixedly connected to the fixture of the drilling workpiece.

The fixture includes a frame structure, the frame includes a top plate, and the top plate is provided with two drill bit guide holes and two pressure rod holes, and two pressure rods that can compress the drilling workpiece are arranged in the pressure rod holes; the guide shaft is fixedly connected with the top plate ; Both sides of the top plate are respectively fixedly connected with two side plates, and the lower part of the side plates is fixedly connected with the bottom plate of the frame.

The pressure rod is connected with a linkage mechanism driven by the cylinder: the cylinder piston is connected with a slide rod, and the slide rod is located below the bottom plate of the frame; the left end of the slide rod is hinged with the first connecting rod through the first pin, and the first connecting rod passes through The second pin is hinged with the second connecting rod, the second connecting rod is hinged with the first rod through the third pin, and hinged with the pressure rod on the left side through the fourth pin, wherein the first rod is fixedly connected to the top plate On the left side, the third pin shaft is located between the second pin shaft and the fourth pin shaft, and the first pin shaft is located at the lower left of the second pin shaft; at the right end of the slide bar, the fifth pin shaft is hinged with the third connecting rod, The third connecting rod is hinged with the fourth connecting rod through the sixth pin, the fourth connecting rod is hinged with the second rod through the seventh pin, and is hinged with the pressure rod on the right side through the eighth pin, wherein the second rod It is fixedly connected to the right side of the top plate, the seventh pin is located between the sixth pin and the eighth pin, and the fifth pin is located at the lower left of the sixth pin; The tooling base plate on the workbench is also fixedly connected between the cylinder block and the tooling base plate.

A rolling groove is arranged on the lower plane of the slide bar, and guide rollers of the slide bar are arranged in the rolling groove, and the guide rollers are installed on the upper plane of the tooling bottom plate.

A vertical slot-shaped notch is arranged on the side of the sleeve, and a connecting plate is arranged on both sides of the notch, and a threaded hole is arranged on the connecting plate, and a screw that can adjust the strength of the sleeve to hug the main shaft sleeve of the drilling machine is matched in the threaded hole.

A first compression spring is sheathed on the guide shaft, between the guide cylinder and the frame top plate.

A vertical plate fixedly connected with the tooling base plate is provided on the right side of the tooling base plate, and a second compression spring is provided between the vertical plate and the right end of the slide bar.

The beneficial effect produced by adopting the above-mentioned technical solution is: through the transmission of the gear box, the rotary motion of the drill shank of the main shaft of the drilling machine can be decomposed into two rotary motions with the same rotation direction and speed, which are output through two output shafts, and on the output shafts Installing the drill bit can realize the double-head drilling function, which improves the machining accuracy and work efficiency; the lower end bearing of the output shaft is arranged outside the gearbox, so that it is convenient to set a slot hole on the side of the output shaft for easy drill removal; the guide shaft is set as double-head The drilling device is guided to ensure the stability of processing; the plate workpiece is placed in the frame structure to facilitate the positioning of the workpiece; the pneumatic clamping link mechanism realizes the automatic and fast clamping of the plate workpiece; the spring in the device is set to the rigidity of the device Action provides cushioning and facilitates handling.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the gear train of the gear box in Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of a slide bar and a guide roller in Embodiment 1 of the present invention;

Fig. 4 is the sectional view of section A-A in Fig. 3;

Fig. 5 is a schematic structural view of a sleeve in Embodiment 1 of the present invention;

Figure 6 is a top view of Figure 5;

Fig. 7 is a schematic structural diagram of the gear train of the gearbox in Embodiment 2 of the present invention.

Among them, 1-gear box; 2-sleeve; 3-input shaft; 4-output shaft; 5-first gear; 6-second gear; 7-third gear; 8-fourth gear; 9-fifth Gear; 10-bearing seat; 11-supporting plate; 12-connecting column; 13-slot hole; 14-guiding cylinder; 15-guiding shaft; 16-top plate; 17-pressure rod; 18-side plate; ; 20-cylinder piston; 21-sliding rod; 22-the first pin; 23-the first connecting rod; Strut; 28-the fourth pin; 29-the fifth pin; 30-the third connecting rod; 31-the sixth pin; 32-the fourth connecting rod; 33-the seventh pin; 34-the second branch Rod; 35-eighth pin; 36-tooling bottom plate; 37-roll groove; 38-guide roller; 39-notch; 40-connecting plate; 41-screw; 42-first compression spring; 43-stand plate; 44 -second compression spring; 45-sixth gear; 46-seventh gear; 47-second gear shaft; 48-third gear shaft; 49-guide roller shaft; 50-drill bit; 51-workpiece.

Detailed ways

Embodiment one:

A double-head drilling device, including a gear box 1, the upper part of the gear box 1 is fixedly connected with a sleeve 2 that can be fixedly connected with the main shaft sleeve of the drilling machine, and the sleeve 2 is provided with a gear box input shaft that can be connected with the main shaft shank of the drilling machine 3. The lower part of the gearbox 1 is provided with two output shafts 4 on which drill bits can be installed.

As shown in Figure 2, the gear train structure of the gearbox 1 is as follows: the input shaft 3 is fixedly connected with the first gear 5, the first gear 5 meshes with the second gear 6 and the third gear 7 respectively, the second gear 6 and the third gear The gear 7 meshes with the fourth gear 8 and the fifth gear 9 respectively, and the fourth gear 8 and the fifth gear 9 are fixedly connected with the two output shafts 4 respectively. All the gears are spur gears with the same number of teeth and the same modulus. Through the transmission of the gear box 1, the rotary motion of the drill shank of the main shaft of the drilling machine can be decomposed into two rotary motions with the same rotation direction and speed, which are output through two output shafts 4, and a drill bit is installed on the output shaft 4 to realize double-end drilling. hole function.

The lower ends of the two output shafts 4 are equipped with bearings, and the bearing housing 10 is arranged on a supporting plate 11, and the supporting plate 11 is fixedly connected with the gearbox 1 through the connecting column 12; the side of the output shaft 4 is provided with a slotted hole for easy dismounting of the drill bit 13. The lower end bearing of the output shaft 4 is arranged on the outside of the gear box 1, so that the side of the output shaft 4 is provided with a slotted hole 13 for easy dismounting of the drill bit. The output shaft 4 is provided with a tapered hole matched with the taper of the drill mounting handle, and the slotted hole 13 communicates with the top of the tapped hole, and the drill bit can be easily disassembled through the slotted hole 13.

A guide cylinder 14 is fixedly connected to both sides of the gear box 1 and the supporting plate 11, and a guide shaft 15 is matched with the guide cylinder 14, and the guide shaft 15 is fixedly connected to the fixture of the drilling workpiece. The setting of the guide shaft 15 is guided by a double-head drilling device to ensure the stability of processing.

Fixture comprises a frame structure, and frame comprises top plate 16, and top plate 16 is provided with two drill guide holes and two pressure rod holes, is provided with two pressure rods 17 that can compress drilling workpiece in the pressure rod holes; Guide shaft 15 It is fixedly connected with the top plate 16; two sides of the top plate 16 are respectively fixedly connected with two side plates 18, and the lower part of the side plate 18 is fixedly connected with the frame bottom plate 19. This frame structure is the placement and positioning mechanism of the sheet material workpiece, and the sheet material workpiece is placed on the frame bottom plate 19 in the frame.

Depression bar 17 connects a connecting rod mechanism driven by cylinder: cylinder piston 20 connects a slide bar 21, and slide bar 21 is positioned at the below of frame base plate 19; Hinged, the first connecting rod 23 is hinged with the second connecting rod 25 through the second pin shaft 24, the second connecting rod 25 is hinged with the first pole 27 through the third pin shaft 26, and connected with the left side through the fourth pin shaft 28. The pressure rod 17 is hinged, wherein the first pole 27 is fixedly connected to the left side on the top plate 16, the third pin shaft 26 is located between the second pin shaft 24 and the fourth pin shaft 28, and the first pin shaft 22 is located on the second pin shaft. The lower left side of the shaft 24; the right end of the slide bar 21 is hinged with the third connecting rod 30 by the fifth pin shaft 29, the third connecting rod 30 is hinged with the fourth connecting rod 32 by the sixth pin shaft 31, and the fourth connecting rod 32 The seventh pin 33 is hinged with the second pole 34, and the eighth pin 35 is hinged with the pressure bar 17 on the right side, wherein the second pole 34 is fixedly connected to the right side on the top plate 16, and the seventh pin 33 Located between the sixth pin shaft 31 and the eighth pin shaft 35, the fifth pin shaft 29 is located at the lower left side of the sixth pin shaft 31; the frame bottom plate 19 is fixedly connected with a tooling bottom plate 36 that can be fixedly installed on the drilling machine workbench, The cylinder block 37 is also fixedly connected with the tooling base plate 36. This pneumatic clamping link mechanism realizes the automatic and rapid clamping of sheet metal workpieces.

As shown in Figures 3 and 4, a rolling groove 37 is set on the lower plane of the slide bar 21, and a guide roller 38 of the slide bar 21 is provided in the rolling groove 37, and the guide roller 38 is installed on the upper plane of the tooling base plate 36.

As shown in Figures 5 and 6, a vertical groove-shaped notch 39 is provided on the side of the sleeve 2, and connecting plates 40 are arranged on both sides of the notch 39, and threaded holes are arranged on the connecting plate 40, and adjustable holes are provided in the threaded holes. Sleeve 2 hugs the screw 41 of the strength of the main shaft sleeve of the drilling machine.

A first compression spring 42 is sleeved on the guide shaft 15 , between the guide cylinder 14 and the frame top plate 16 . This spring can ensure that the gear box 1 has a certain original position, and is beneficial to the operation of installing and removing the drill bit.

A vertical plate 43 fixedly connected with the tooling base plate 36 is provided on the right side of the tooling base plate 36 , and a second compression spring 44 is provided between the vertical plate 43 and the right end of the slide bar 21 . This spring setting can provide cushioning for the rigid action of the cylinder.

Embodiment 2: As shown in Figure 7, the difference from Embodiment 1 is that the gear train structure of the gearbox 1 is: the input shaft 3 is fixedly connected to the sixth gear 45, and the sixth gear 45 is an internal spur gear , the sixth gear 45 meshes with the seventh gear 46 and the eighth gear 47 respectively. Bar output shaft 4 is fixedly connected. In this way, the rotary motion of the spindle drill handle of the drilling machine can also be decomposed into two rotary motions with the same rotation direction and rotational speed.

Embodiment 3: The difference from Embodiment 1 is that the clamp does not have a frame structure, but only a base plate that can be fixedly connected to the drilling machine workbench, and the guide column 15 is fixedly connected to the base plate, and then through other general drilling machine clamps. The workpiece can be fixed on the base plate.

Claims (10)

1. A double-head drilling device, characterized in that: it includes a gear box, the upper part of the gear box is fixedly connected to a sleeve that can be fixedly connected to the main shaft sleeve of the drilling machine, and the sleeve is provided with a gear box that can be connected to the shank of the main shaft of the drilling machine The input shaft and the lower part of the gear box are provided with two output shafts on which drill bits can be installed. 2. The double-head drilling device according to claim 1, characterized in that: the gear train structure of the gearbox is: the input shaft is fixedly connected with the first gear, the first gear meshes with the second gear and the third gear respectively, The second gear and the third gear mesh with the fourth gear and the fifth gear respectively, and the fourth gear and the fifth gear are fixedly connected with the two output shafts respectively. 3. The double-head drilling device according to claim 1 or 2, characterized in that: the lower ends of the two output shafts are equipped with bearings, the bearing seat is set on a supporting plate, and the supporting plate is fixedly connected with the gear box through the connecting column ; There is a slotted hole on the side of the output shaft to facilitate the removal of the drill bit. 4. The double-head drilling device according to claim 3, characterized in that: a guide cylinder is fixedly connected to both sides of the gear box and the supporting plate, and a guide shaft is matched with the guide cylinder, and the guide shaft is fixedly connected to the hole of the drilling workpiece. on the fixture. 5. The double-head drilling device according to claim 4, characterized in that: the fixture comprises a frame structure, the frame comprises a top plate, and the top plate is provided with two drill guide holes and two pressure rod holes, and the pressure rod holes are provided with There are two pressure rods that can compress the drilling workpiece; the guide shaft is fixedly connected with the top plate; 6. The double-head drilling device according to claim 5, characterized in that: the depression bar is connected with a linkage mechanism driven by the cylinder: the cylinder piston is connected with a slide bar, and the slide bar is positioned under the frame bottom plate; The left end is hinged with the first connecting rod through the first pin, the first connecting rod is hinged with the second connecting rod through the second pin, the second connecting rod is hinged with the first rod through the third pin, and the second connecting rod is hinged with the first rod through the fourth pin. Hinged with the pressure rod on the left, wherein the first rod is fixedly connected to the left side of the top plate, the third pin is located between the second pin and the fourth pin, and the first pin is located on the lower left of the second pin square; the right end of the slide bar is hinged with the third connecting rod through the fifth pin, the third connecting rod is hinged with the fourth connecting rod through the sixth pin, and the fourth connecting rod is hinged with the second rod through the seventh pin , the eighth pin is hinged with the right side of the pressure rod, wherein the second rod is fixedly connected to the right side of the top plate, the seventh pin is located between the sixth pin and the eighth pin, and the fifth pin is located The lower left side of the sixth bearing pin; the frame base plate is fixedly connected with a tooling base plate that can be fixedly installed on the drilling machine workbench, and is also fixedly connected between the cylinder block and the tooling base plate. 7. The double-head drilling device according to claim 6, characterized in that: a rolling groove is provided on the lower plane of the slide bar, and guide rollers of the slide bar are arranged in the rolling groove, and the guide rollers are installed on the upper surface of the tooling base plate. on flat surface. 8. The double-head drilling device according to claim 1, characterized in that: a vertical groove-shaped gap is provided on the side of the sleeve, connecting plates are provided on both sides of the gap, threaded holes are provided on the connecting plate, and the thread The hole is equipped with a screw that can adjust the strength of the sleeve to engage the main shaft sleeve of the drilling machine. 9. The double-head drilling device according to claim 5, characterized in that: a first compression spring is sleeved on the guide shaft, between the guide cylinder and the top plate of the frame. 10. The double-head drilling device according to claim 6, characterized in that: a vertical plate fixedly connected to the tooling base plate is provided on the right side of the tooling base plate, and a second vertical plate is provided between the vertical plate and the right end of the slide bar. compressed spring.

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