CN102489740A - Special drilling machine for drilling holes in coil pipe of refrigeration equipment - Google Patents

Abstract

The invention discloses a special drilling machine for drilling holes in a coil pipe of refrigeration equipment, which belongs to the technical field of drilling machines and comprises a machine frame, a coil pipe fixing seat disposed at the upper end of the machine frame, a clamping device connected on the coil pipe fixing seat and used for clamping the coil pipe, and two sets of drilling machines connected with two sides of the machine frame. The drilling machines drive rotary drills to be simultaneously in axial motion to drill holes through driving cylinders, and after drilling is finished, the drilling machines automatically restore to the original state. Due to the fact that the coil pipe is fixed on the specially-made coil pipe fixing seat and the two sets of drilling machines are used for drilling holes in the coil pipe simultaneously, the special drilling machine for drilling holes in the coil pipe of the refrigeration equipment is convenient and safe to operate and greatly improves drilling efficiency.

Description

Special drilling machine for drilling refrigeration equipment coils

technical field

The invention belongs to the technical field of drilling machinery, and in particular relates to a special drilling machine for drilling coils of refrigeration equipment.

Background technique

The heat exchange coil used in the current absorption-diffusion refrigeration equipment needs to drill two holes at specific positions on the coil to connect the balance pipe and the thin liquid pipe respectively. At present, the coil is generally drilled with a hand drill Drilling is inefficient, and it is inconvenient to manually position the coil due to the irregular shape of the coil.

Contents of the invention

The purpose of the present invention is to propose a special drilling machine for drilling coils of refrigeration equipment, so as to overcome the low efficiency of using a hand drill to drill coils in the prior art.

In order to achieve the purpose of the present invention, the following technical solutions are adopted: a special drilling machine for drilling the coils of refrigeration equipment, including a frame, a coil fixing seat arranged on the upper end of the frame, connected to the coil fixing seat A clamping device for clamping the coiled pipe on the top, and two sets of drilling machines connected to both sides of the frame; the drilling machine includes a drilling machine base plate, a motor, a main shaft and a drill bit; one end of the drilling machine base plate It is connected with the frame, and the motor is fixedly arranged on the other end of the drilling rig seat plate. The output shaft of the motor is connected with a spline sleeve, and the spline sleeve is coaxially connected with one end of the main shaft by a spline connection; the drill bit passes through the drill chuck Connect with the other end of the main shaft; the middle part of the main shaft is sleeved with a shaft sleeve, the main shaft and the shaft sleeve are fixedly connected in the axial direction, the shaft sleeve is connected with a slider, and the rig seat plate is provided with a chute matching the slider ; The lower end of the slider is also connected with a connecting rod passing through the drill seat plate, and the connecting rod is connected with a driving device that drives it to move axially along the drill bit. The connecting rod finally drives the drill bit to move along the axial direction of the drill bit, thereby drilling the coiled pipe.

As a preferred solution: the driving device includes a driving cylinder, the piston rod of the driving cylinder is connected with the connecting rod, the driving cylinder is fixedly arranged under the bed plate of the drilling rig, and the driving cylinder is connected with the air pump.

As a preferred solution: a travel switch triggered by a connecting rod is also arranged under the base plate of the drilling rig.

As a preferred solution: a bearing is connected between the shaft sleeve and the main shaft.

As a preferred solution: the chute is a dovetail groove.

As a preferred solution: the coiled pipe fixing base is provided with a through hole for the drill bit to pass through, and a drill sleeve is arranged in the through hole. Due to the long spindle, the drill sleeve is used to limit the drill bit, reducing the vibration of the drill bit when it is idling.

Compared with the prior art, the beneficial effects of the present invention are: since the present invention fixes the coil on the special coil fixing seat, and uses two sets of drilling machines to drill the coil at the same time, the operation is convenient and safe, Can greatly improve the efficiency of punching.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a schematic view of the structure in the plan view direction of FIG. 1 .

Fig. 3 is a structural schematic diagram of the drilling machine.

1. Rack; 2. Coil pipe fixing seat; 3. Coil pipe; 4. Compression device; 41. Lock; 42. Pressing plate; 5. Drilling machine; 7. Motor; 8. Drilling machine seat plate; 9. Spline sleeve; 10, main shaft; 11, bearing; 12, shaft sleeve; 13, drill chuck; 14, drill bit; 15, drill sleeve; 16, travel switch; 17, slider; 18, connecting rod; 19, slide Groove; 20, drive cylinder.

Detailed ways

A detailed description will be given below of specific embodiments of the present invention according to the accompanying drawings.

Example

According to Fig. 1 to Fig. 3, a kind of special drilling machine for drilling the coil of refrigeration equipment in this embodiment includes a frame 1, a coil fixing base 2 arranged on the upper end of the frame 1, connected to the coil The clamping device 4 for clamping the coil pipe 3 on the fixed seat 2, and two sets of drilling machines 5 connected to both sides of the frame 1; the drilling machine 5 includes a drilling machine base plate 8, a motor 7, a main shaft 10 and a drill bit 14; one end of the rig base plate 8 is connected with the frame 1, and the motor 7 is fixedly arranged on the other end of the rig base plate 8, and the output shaft of the motor 7 is connected with a spline sleeve 9, and the spline sleeve 9 is connected with the One end of the main shaft 10 is coaxially connected by a spline connection; the drill bit 14 is connected to the other end of the main shaft 10 through a drill chuck 13; Fixedly connected, the shaft sleeve 12 is connected with a slide block 17, and the chute 19 matching the slide block 17 is arranged on the described drill rig base plate 8; the lower end of the described slide block 17 is also connected with a The connecting rod 18 is connected with a driving device that drives it to move axially along the drill bit 14 .

The driving device includes a driving cylinder 20, the piston rod of the driving cylinder 20 is connected with the connecting rod 18, the driving cylinder 20 is fixedly arranged under the drilling rig base plate 8, and the driving cylinder 20 is connected with the air pump. The air pump is electrically connected with the controller of the drilling machine.

A travel switch 16 triggered by a connecting rod 18 is also arranged below the drilling machine base plate 8, and the travel switch 16 is electrically connected with the controller of the drilling machine.

A bearing 11 is connected between the shaft sleeve 12 and the main shaft 10 , and the bearing 11 fixes the shaft sleeve 12 and the main shaft 10 axially.

The chute 19 is a dovetail groove, so that the slider 17 can slide axially along the chute 19 without breaking away from the chute 19 .

The coil fixing base 2 is provided with a through hole for the drill bit 14 to pass through, and a drill sleeve 15 is arranged in the through hole.

The direction of the drill bit 14 of the two drilling machines 5 shown in Fig. 1 is 45 degrees obliquely upward, and can drill holes at the fixed position of the coil 3, and the position and angle of the drilling machines 5 can be adjusted according to actual needs.

The main shaft 10 is coaxially connected with the spline sleeve 9 , and the main shaft 10 can be displaced along its axial direction, and its moving distance is determined by the driving cylinder 20 . In addition, the main shaft 10 is connected to the shaft sleeve 12 through the bearing 11, and the lower end of the shaft sleeve 12 is connected to the slider 17, which is matched with the chute 19 on the drilling rig seat plate 8, and the slider 17 is connected to the The connecting rod 18 of the drilling rig base plate 8, like this, the connecting rod 18 can promote the main shaft 10 to move along its axial direction under the drive of the driving cylinder 20, and finally the main shaft 10 drives the drill bit 14 to carry out drilling work.

The air pump and the motor 17 for controlling and driving the cylinder 20 are controlled by the same controller. The working principle of the present invention will be further described below in conjunction with the use process of the present invention.

First, the coil 3 is placed on the coil fixing seat 2, and then the coil 3 is fixed by using the pressing device 4. The pressing device 4 includes a pressing plate 42 and a lock 41 hinged with the coil fixing seat 2. The top of the coil 3 presses the coil 3 , and the pressing plate 42 cooperates with the locking buckle 41 to secure the coil 3 completely. Both ends of the coil fixing seat 2 match the shape of the curved part of the coil 3, which facilitates fast and accurate placement of the coil 3.

After the coil pipe 3 is fixed, start the power supply, the controller of the drilling machine controls the rotation of the motor 17, the main shaft 10 drives the drill bit 14 to start rotating, and then the controller drives the air pump to work, so that the driving cylinder 20 pushes the connecting rod 18 to move towards the direction of the drill bit 14, that is, The slider 17 is driven by the connecting rod 18 to move obliquely upward along the chute 19. At the same time, the spindle 10 drives the drill bit 14 to punch the coil 3. When the drilling is completed, the driving cylinder 20 pushes the connecting rod 18 to continue to move to the connecting rod 18. When the travel switch 16 is touched, the controller controls the air pump to make the drive cylinder 20 push the connecting rod 18 back to move, and the controller controls the motor 17 to stop running after the connecting rod 18 returns to the initial position. Finally loosen the pressing device 4 and take out the coiled pipe 3 that has been drilled.

Claims (6)

1. A special drilling machine for drilling the coils of refrigeration equipment, characterized in that it includes a frame (1), a coil fixing seat (2) arranged on the upper end of the frame (1), connected to the coil fixed The clamping device (4) used to clamp the coil (3) on the seat (2), and two sets of drilling machines (5) connected to both sides of the frame (1); the drilling machine (5) ) includes a drilling rig base plate (8), a motor (7), a spindle (10) and a drill bit (14); one end of the drilling rig base plate (8) is connected to the frame (1), and the motor (7) is fixedly arranged on the drilling rig On the other end of the seat plate (8), the output shaft of the motor (7) is connected with a spline sleeve (9), and the spline sleeve (9) is coaxially connected with one end of the main shaft (10) by a spline connection; the The drill bit (14) is connected to the other end of the main shaft (10) through the drill chuck (13); the middle part of the main shaft (10) is sleeved with a shaft sleeve (12), and the main shaft (10) and the shaft sleeve (12) are axially fixed connection, the shaft sleeve (12) is connected with a slider (17), and the rig seat plate (8) is provided with a chute (19) matching the slider (17); the slider (17) The lower end is also connected with a connecting rod (18) passing through the drill base plate (8), and the connecting rod (18) is connected with a driving device that drives it to move axially along the drill bit (14). 2. The special drilling machine for drilling refrigeration equipment coils according to claim 1, characterized in that: the driving device includes a driving cylinder (20), a piston rod and a connecting rod ( 18) are connected, the driving cylinder (20) is fixedly arranged under the rig base plate (8), and the driving cylinder (20) is connected with the air pump. 3. The special drilling machine for drilling refrigeration equipment coils according to claim 1, characterized in that: a travel switch (16) triggered by a connecting rod (18) is also arranged under the drilling machine seat plate (8). ). 4. The special drilling machine for drilling refrigeration equipment coils according to claim 1, characterized in that: a bearing (11) is connected between the shaft sleeve (12) and the main shaft (10). 5. The special drilling machine for drilling the coils of refrigeration equipment according to claim 1, characterized in that: said chute (19) is a dovetail groove. 6. The special drilling machine for drilling refrigeration equipment coils according to claim 1, characterized in that: said coil fixing seat (2) is provided with a through hole for the drill bit (14) to pass through, And a drill sleeve (15) is arranged in the through hole.

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