RU59462U1 - PRECISION DRILLING MACHINE - Google Patents

Abstract

The utility model relates to the field of machine tools, in particular to drilling machines and can be used for drilling, grinding, milling of metal blanks, all types of plastic, as well as wood. The objective of the claimed utility model is to simplify the design, create a convenient and safe portable multifunctional machine, to perform various operations: drilling, grinding, milling with high precision processing of various materials. The problem is achieved due to the fact that the drilling machine containing the frame 1 is mounted on it with a support column 2, on which the spindle head assembly 3 with the spindle 4 is mounted for mounting the drill chuck 19 with the cutting tool, the spindle head assembly 3 is equipped with a feed unit drive 13 s feed handle 14 and precision feed disk 16, interacting with the specified drive, as well as the control unit 10 and control the spindle speed 4 with the controls placed on the shield of the spindle head assembly, and tion finishing drilling operations performs LCD digital display 18 mounted on the front end assembly of the spindle head. The use of the claimed utility model provides the creation of a convenient and safe portable multifunctional precision drilling machine for accurate drilling, grinding and milling of metal, all types of plastics, as well as wood.

Description

The utility model relates to the field of machine tools, in particular to drilling machines and can be used for drilling, grinding, milling of metal blanks, all types of plastic, as well as wood.

Recently, there has been a significant increase in demand for multifunctional portable drilling machines for drilling through and blind holes in workpieces made of various materials, which have convenience and safety in operation, high operational properties, small dimensions and weight, used in car repair shops as well as in domestic conditions.

A known drilling machine comprising a support platform with a supporting column fixed to it, on which a drilling head is mounted with a drive from an electric motor and axially displaceable spindle with a tool holder.

(USSR AS No. 1227366, IPC V 23 V 39/00, 1986)

A disadvantage of the known drilling machine is its limited functionality, low precision machining of workpieces and design complexity.

The objective of the claimed utility model is to simplify the design, create a convenient and safe portable multifunctional machine, to perform various operations: drilling, grinding, milling with high precision processing of various materials.

The task is achieved due to the fact that the drilling machine containing the frame with a supporting stand fixed on it, on which the spindle head assembly with the spindle is mounted for installing the drill chuck with the cutting tool, according to the utility model, the spindle head assembly is equipped with a feed unit drive with a feed handle and a fine feed disk interacting with the specified drive, as well as a control unit for regulating the spindle speed with controls placed on the shield of the spindle assembly head and finish drilling operations function performs LCD digital display mounted on the front end assembly of the spindle head.

To reduce or increase the spindle speed, the pulleys of the electric motor and spindle are made replaceable.

Restriction of the movement of the spindle head assembly after its installation at the required drilling depth is carried out by an expanding ring mounted on the stand.

The required drilling or milling depth is set by the drive of the feed unit with the feed handle, and is fixed with a screw.

On the working surface of the bed T-shaped grooves are made for installation and fixing of a vice, dividing head, rotary table.

To perform drilling operations, a chuck or collet clamp for a cutting tool is installed on the spindle.

When installing a cross vise and collet clamp, the machine is used as a milling machine.

The utility model is illustrated in the drawing, in which Fig. 1 is a general view of the inventive precision drilling machine, and Fig. 2 is a view of the spindle head assembly from the side of the control unit.

The list of positions in the drawing:

1. Bed;

2. The stand;

3. Spindle head assembly;

4. Spindle;

5. Clamping ring;

6. Sleeve;

7. Screw fixing the spindle head assembly;

8. A protective casing of the drive;

9. A protective casing of the electric motor;

10. The control unit;

11. The handle of the spindle speed controller;

12. Power on / off button;

13. The drive unit feed;

14. Feed handle;

15. The limb of the nonius;

16. Disc accurate feed;

17. Button connecting shaft;

18. Digital liquid crystal display;

19. Drill chuck.

The precision drilling machine contains a frame 1 with T-grooves and a vertical rack 2 mounted on it. A column 2 with a spindle 4 is mounted on the column 2 with the possibility of moving along it along the axis 4. Under the spindle head, a clamping ring 5 with a sleeve 6 is mounted on the rack to limit the movement of the spindle head assembly 3. The spindle head itself, after setting its position on the stand to the required drilling depth, is fixed with screw 7. The split clamping ring 5 is moved close to the end face of the spindle ovki and tighten the bolts.

An electric motor is mounted in the housing of the spindle head 3, on the shaft of which a drive pulley is mounted and a hollow shaft with a spindle 4 is mounted parallel to it, on the opposite end of which a pulley is mounted. The rotation of the spindle from the electric motor is transmitted through a belt drive closed by a protective casing 8. From below, the electric motor is closed by a casing 9.

To reduce the spindle speed, the drive belt is installed on a larger diameter of the motor pulley and a smaller diameter of the spindle pulley, to increase the spindle speed - on a smaller diameter of the motor pulley and a larger diameter of the spindle pulley.

A low spindle speed is required for hard materials and large bore diameters. Soft materials and small bore diameters require high spindle speeds.

The adjustment of the spindle speed is carried out by the control unit 10 with the handle 11 and the button 12 on / off network connected to the power cord.

The required drilling or milling depth is set by the drive 13 of the feed unit, with the feed handle 14 and the vernier dial 15.

The drilling depth is counted from zero when “0” on the vernier dial scale is combined with “0” on the spring cover.

To use the finish feed function, the machine has a feed handle 14 and a spindle fine feed disk 16, which, when the button 17 of the connecting shaft is pressed, rotates counterclockwise, slowly lowering the spindle 4 down, and when the button 17 is pulled out, the machine will return to the normal feed state.

For the drilling operation, the LCD 18 digital indicator is used, for which first press the on / off switch, then the ZERO button (zero), press the mm / inch button to turn on metric or inch waves. After that, you can start drilling.

To perform drilling operations on the spindle mounted drill chuck 19.

The T-shaped groove of the table makes it possible to use special springs, adapters, and, as replaceable equipment, a vice, dividing heads, a rotary table, etc.

When installing a cruciform table or cruciform vice and collet clamp, the machine can be used as a milling machine.

A wide range of spindle speed control allows the use of a large arsenal of drilling and milling cutting tools.

Preparation for work and the work of a precision drilling machine is as follows:

Before turning on the machine, make sure that the machine is correctly assembled and that the machine is mounted securely on the workbench to prevent the risk of tipping over or slipping.

Adjust the height of the spindle head by loosening the fixing screw 7 of the spindle head assembly 3 and moving the spindle head assembly up or down to ensure a sufficient distance between the headstock and the surface of the workpiece.

Tighten the fixing screw for the spindle head assembly in the selected position and the clamp ring bolt 5.

To adjust the speed of the spindle 4, open the protective casing 8 of the belt drive and install the belt on the pulleys of the motor and spindle, ensuring the necessary spindle speed. Check the belt tension, the belt deflection in the middle should be 5-6 mm.

Set the drilling depth as follows:

Turn the vernier dial 15 of the feed unit 13 so that “0” on the dial scale is aligned with “0” on the lid.

Turn the vernier 15 dial clockwise to the desired value on the dial scale, and then fasten the fixing screw on the dial to prevent the vernier limb from shifting.

Turn the handle 14 of the feed unit 13 during the drilling operation until the dial of the vernier 15 of the feed unit returns to the reading “0” on the cover and cannot move further. This means that the desired drilling depth is obtained.

For the drilling operation, using the digital indicator 18, you must first press the ON / OFF switch and then press the “zero” button, press the mm / inch button to turn on the metric or inch units. These two functions can be performed regardless of the position of the spindle feed handle 14. After that, you can start drilling. The indicator can be changed in any position by pressing the plus or minus buttons.

To use the fine feed function of the machine, it is necessary to press the button 17 of the connecting shaft, slightly turning the feed knob 14 for the fine (fine) feed, turn the fine feed dial 16 of the spindle counterclockwise so that the spindle moves slowly downward.

Pull out the connecting shaft button and the machine returns to the normal feed state.

When using devices clamped in a drill chuck for grinding various materials, do not increase the lateral pressure on the grinding head. The larger the grinding area, the more carefully you should increase the pressure of the part to the grinding device.

If you need to perform a significant amount of work in a homogeneous material, you should be guided by the recommended drilling speeds given in the tables.

A wide range of spindle speed control allows the use of a large arsenal of drilling and milling cutting tools.

The use of the claimed utility model provides the creation of a convenient and safe portable multifunctional precision drilling machine for accurate drilling, grinding and milling of metal, all types of plastics, as well as wood.

Claims (6)

1. A precision drilling machine comprising a bed, a support column mounted on it, on which a spindle head assembly with a spindle for a cutting tool is mounted, characterized in that the spindle head assembly is provided with a spindle feed unit drive with a feed handle and an exact feed disk cooperating with said the drive, as well as the control unit and control the spindle speed with the controls placed on the shield of the spindle head assembly, and the functions of the finishing operations of drilling are performed by the liquid brush the metallic digital display mounted on the front end of the spindle head. 2. The machine according to claim 1, characterized in that on the stand at an angle of the spindle head there is an expandable ring with a fixing bolt. 3. The machine according to claim 1, characterized in that on the working surface of the bed T-shaped grooves are made for installing and securing a vise, dividing head, rotary table. 4. The machine according to claim 1, characterized in that the required drilling depth is set by the drive of the feed unit with a feed handle, and is fixed by the screw of the spindle head assembly. 5. The machine according to claim 1, characterized in that the pulleys of the belt drive of the spindle and the motor are removable. 6. The machine according to claim 1, characterized in that a chuck or collet clamp for a cutting tool is mounted on the spindle.