CN201543874U - Numerical control light milling machine - Google Patents

Abstract

The utility model discloses a light-duty milling machine of numerical control, workstation vertical feed mechanism and workstation transverse feed mechanism of workstation feed system are equipped with the numerical control motor respectively, and light-duty milling machine of numerical control is equipped with numerical control system, and the numerical control motor is connected with numerical control system. By adopting the technical scheme, the numerical control of the light milling machine is realized, the linkage feed function in three directions is realized, the mechanical cutting machining of two-dimensional and three-dimensional parts is realized, and various mechanical machining can be carried out; the processing range is larger; the main shaft has a large speed regulation range and can realize stepless speed regulation, and the main shaft box can realize gearless speed regulation, so that the trouble of frequent replacement is avoided; the operation is stable, the transmission precision is high, and the surface precision of a machined part is improved by 2-3 levels compared with that of a common milling machine; the utility model has the function of a small machining center, and has technical advantages in the aspect of operation flexibility compared with a common machining center; and a convenient, quick and reliable manual mechanism is also arranged.

Description

CNC light milling machine

technical field

The utility model belongs to the technical field of mechanical manufacturing and processing equipment, and relates to a light mechanical cutting machine tool. More specifically, the utility model relates to a numerically controlled light milling machine.

Background technique

Existing ordinary light milling machines generally include a bed, a spindle box, a simple tool box, a workbench, and a motor. The motor is behind the spindle box, and the milling head spindle is driven to rotate through the motor and the spindle box. Different speeds can be obtained by replacing the gears of the spindle box.

Ordinary light milling machines have disadvantages:

1. Through the gear shifting, the gear needs to be replaced frequently to achieve the purpose of shifting the cutting tool;

2. Without the function of longitudinal, horizontal and vertical linkage tooling, the required complex shape cannot be obtained; the shape of the workpiece is obtained by manually controlling the vertical, horizontal and vertical tooling, which affects the machining accuracy of the part;

3. The ratio of the length of the workbench to the width of the carriage guide rail is small, only 2:1;

4. The spindle speed range is small, which is not conducive to high and low speed cutting.

Utility model content

The problem to be solved by the utility model is to provide a numerical control light milling machine, and its purpose is to realize the digital control of the light milling machine.

In order to achieve the above object, the technical scheme that the utility model takes is:

The numerically controlled light-duty milling machine provided by the utility model includes a spindle motor, a spindle, a spindle box, a workbench, a bed, a column and a workbench feed system, and the workbench longitudinal feed mechanism and the workbench feed system of the workbench feed system The horizontal feed mechanism is respectively provided with a numerical control motor, and the numerical control light milling machine is provided with a numerical control system, and the numerical control motor is connected with the numerical control system.

In order to make the utility model more perfect, the following more detailed and specific technical solutions are further proposed to obtain the best practical effect, better realize the purpose of the invention, and improve the novelty and creativity of the utility model:

The numerical control motor and the longitudinal feed mechanism of the workbench, and the numerical control motor and the transverse feed mechanism of the workbench are connected through a synchronous pulley transmission mechanism.

The spindle box is equipped with a manual spindle feed mechanism, and the spindle sleeve is provided with a spindle sleeve, and the spindle sleeve and the spindle box are in a sliding connection along the axis of the spindle; the spindle manual feed mechanism A spindle feed handle is provided on the box outside the spindle box, and the end of the spindle feed handle whose shaft extends into the spindle box is connected with the spindle sleeve through a rack and pinion mechanism.

The spindle box is slidingly connected with the column through the spindle box lifting slide; a numerical control motor is arranged on the column, and the spindle box lifting slide is connected with the numerical control motor on the column through the spindle box lifting transmission mechanism, and the CNC motor Connect with the numerical control system mentioned above.

A spindle box sliding seat locking handle is arranged on the spindle box lifting slide seat.

A gear transmission mechanism is set inside the spindle box, and the spindle motor is connected with the main shaft through the gear transmission mechanism; a spindle transmission handle is arranged on the box outside the spindle box, and the The main shaft speed change handle is connected with the gears in the gear speed change transmission mechanism in the axial sliding direction.

The main shaft motor is a speed-regulating motor; the main shaft motor is connected to the main shaft through a driving synchronous pulley, a synchronous belt and a driven synchronous pulley.

The utility model adopts the above-mentioned technical scheme, realizes the digital control of the light milling machine, has the function of three-direction linkage cutting tool, realizes the mechanical cutting processing of two-dimensional and three-dimensional parts, and can perform various mechanical processing; the processing range is larger; the main shaft The speed range is large, and stepless speed regulation can be realized. The spindle box can realize gearless speed change, saving the trouble of frequent replacement; the operation is stable, the transmission precision is high, and the surface precision of the workpiece is improved by 2-3 levels compared with ordinary milling machines; The utility model has the functions of a small machining center, and has more technical advantages than ordinary machining centers in terms of operational flexibility; it is also equipped with a convenient, fast and reliable manual mechanism.

Description of drawings

The following is a brief description of the content expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic side view of the structure shown in Fig. 1;

Fig. 3 is the structural representation of the main shaft adopting mechanical step-variable speed change in the utility model;

Fig. 4 is the schematic diagram of the structure of the spindle adopting stepless speed change in the utility model

1. Spindle motor, 2. Spindle feed handle, 3. Longitudinal feed handle, 4. Bed, 5. Carriage plate, 6. CNC motor, 7. CNC motor, 8. Headstock slider lock handle, 9 , Headstock lifting slide seat, 10, column, 11, headstock, 12, spindle speed change handle, 13, CNC motor, 14, workbench, 15, lateral feed handle, 16, gear, 17, gear, 18, gear , 19, main shaft manual feed mechanism, 20, main shaft, 21, main shaft sleeve, 22, gear, 23, active synchronous pulley, 24, driven synchronous pulley, 25, synchronous belt.

Detailed ways

Below with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present utility model, such as the shape, structure, mutual position and connection relationship between each part, the function and working principle of each part, and manufacturing of the utility model. Processes, operation methods, etc. are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present utility model.

The structure of the utility model expressed as Fig. 1 to Fig. 4 is a numerically controlled light milling machine, comprising a spindle motor 1, a spindle 20, a spindle box 11, a workbench 14, a bed 4, a column 10 and a workbench feed system. The workbench feed system is further provided with a workbench longitudinal feed mechanism and a workbench transverse feed mechanism. The longitudinal feed mechanism of the workbench can be manually operated through the longitudinal feed handle 3; the lateral feed mechanism of the workbench can be manually operated through the lateral feed handle 15. operate. Rotating the longitudinal feed handle 3 and the lateral feed handle 15 can realize the longitudinal and lateral manual feeding of the workbench 14 through the screw nut mechanism. The main shaft 11 is a vertical milling head structure, and the end of the main shaft is provided with a tool taper hole for installing a milling cutter, a drill bit, a reamer, a thread tap or other special tools.

In order to solve the problems existing in the current known technology described in the background technology part of this description and overcome its defects, and realize the invention purpose of digitally controlling the light milling machine, the technical solution adopted by the utility model is as follows:

As shown in Fig. 1 to Fig. 2, in the numerically controlled light-duty milling machine provided by the utility model, the worktable longitudinal feed mechanism and the workbench transverse feed mechanism of the worktable feed system are respectively provided with a numerically controlled motor 6, a numerically controlled motor 13. The numerical control light milling machine is provided with a numerical control system, and the numerical control motor 6 and the numerical control motor 13 are connected with the numerical control system.

The utility model overcomes the shortcomings of ordinary milling machines, absorbs the advantages of ordinary milling machines and light milling machines, kneads the two together, and adopts a digital control system to form a numerical control light milling machine, which can cut metal and non-metal materials processing. It can be widely used in moulds, auto parts, motorcycle parts, instruments and meters, home appliances, micro motors, schools, hospitals, research institutes and households to make teaching aids, test devices and handicrafts, and is also very suitable for molds and parts in individual processing industries and other manufacturing industries processing.

The utility model can use a digital control system to carry out three-coordinate linkage control, and obtain the required motion trajectory through the three-coordinate numerical control interpolation movement; The computer can realize the control of the movement of the machine; it can also be controlled manually to realize the manual feeding of the vertical, horizontal and lifting directions of the workbench. Through numerical control or manual methods, the processing of complex surfaces of workpieces can be realized.

As shown in Figure 1 and Figure 2, the parts are installed on the workbench 14, and the drill bit, tap, milling cutter and special tools are installed on the spindle 20, and the cutting process can be realized, and the workpiece can be drilled, tapped, and keyway milled. , plane milling; or milling various 2D and 3D molds, 2D and 3D cams and other special-shaped parts, and can mill the 2D and 3D structures of such workpieces, such as internal and external planes and curved surfaces.

Below is the concrete implementation example of the present utility model:

Embodiment one:

As shown in Figure 1 and Figure 2, the numerical control motor 6 described in the utility model is connected with the workbench longitudinal feed mechanism through a synchronous pulley transmission mechanism; Wheel drive connection.

The synchronous pulley transmission mechanism ensures the accuracy of the feed distance of the longitudinal feed mechanism of the worktable and the horizontal feed mechanism of the workbench; it meets the requirements for the distance between the motor shaft and the screw rod and for a more stable transmission.

Embodiment 2, the scheme that the main shaft 20 realizes manual feeding

The spindle box 11 described in the utility model is equipped with a spindle manual feed mechanism 19 as shown in Figure 3, and the spindle sleeve 21 is provided on the spindle 20, and the spindle sleeve 21 and the spindle box 11 are arranged along the spindle Sliding connection in the axial direction; the spindle manual feed mechanism 19 is provided with a spindle feed handle 2 on the box outside the spindle box 11, and the shaft of the spindle feed handle 2 extends into the spindle box 11 The end of the shaft is connected with the main shaft sleeve 21 through a rack and pinion mechanism.

The above structure satisfies the requirement of manual feeding of the spindle axis when the light milling machine is used as a drilling machine for drilling and other processing.

When performing drilling, install the drill bit on the main shaft 2; lock the longitudinal feed mechanism of the workbench and the transverse feed mechanism of the workbench, align the fixture and install it on the workbench 14; or align the workpiece After the position is fixed on the workbench 14; or the workpiece is installed in the fixture and directly aligned; then the drilling process is performed. Manually rotate the main shaft feed handle 2, and the main shaft feed handle 2 drives the rack and pinion mechanism in the main shaft manual feed mechanism 19. The rack structure is integrated with the main shaft sleeve 21, so the main shaft sleeve 21 drives the main shaft 20 to operate Axial feed movement to realize drilling. Other processing that requires manual feed of the spindle is similar to the process described above.

Embodiment 3, the structure in which the spindle realizes the numerical control axial feed:

As shown in Figure 2, the spindle box 11 described in the utility model is slidingly connected with the column 10 through the spindle box lifting slide 9; The transmission mechanism is connected with the numerical control motor 7 on the column 10, and the numerical control motor 7 is connected with the numerical control system.

The main shaft box 11 is installed on the main shaft box elevating slide seat 9 through the turntable, so as to realize the inclined processing of the main shaft 20 and process inclined surfaces with different inclination angles.

The spindle box lifting slide 9 and the column 10 are guide rail cooperation structures in the vertical direction. The CNC motor 7 is connected with the screw rod used for the spindle box lifting slide 9 through the synchronous pulley transmission mechanism, and the screw is driven and fixed on the spindle box. The screw nut on the lifting slide seat 9. Therefore, the rotation of the shaft of the CNC motor 7 is transformed into the lifting movement of the spindle box lifting slide 9, that is, the spindle box 11, through the screw nut mechanism. Under the control of the numerical control system, while the worktable 14 is feeding horizontally and vertically, the feeding of the main shaft 20 in the lifting direction is realized, and the composite motion is synthesized to process the required curved surface on the workpiece.

If the headstock 11 is tilted, the numerically controlled lifting movement of the headstock 11 is generally no longer performed.

Embodiment 4, the locking structure of the headstock lifting slide 9 on the column 10:

As shown in Figure 2, the spindle box sliding seat locking handle 8 is arranged on the spindle box lifting slide seat 9 described in the utility model.

When the handle does not perform axial feed controlled by the numerical control system on the spindle 20, or the spindle 20 only performs axial manual feed, it is necessary to lock the spindle box lifting slide 9 on the column 10 to make the spindle box 11 more stable. , improve the rigidity of its installation, and ensure the processing quality.

Embodiment 5, the spindle adopts a mechanical step-variable milling head structure:

As shown in Figure 3, it is a mechanical variable speed milling head structure. The spindle box 11 described in the utility model is equipped with a gear transmission mechanism, and the spindle motor 1 is connected to the main shaft 20 through the gear transmission mechanism. ; A main shaft speed change handle 12 is established on the casing outside the main shaft box 11, and the described main shaft speed change handle 12 and the gear 16, the gear 17, the gear 18 and the gear 22 in the described gear speed change transmission mechanism carry out axial connection in the slip direction.

The motion of main shaft 20, by the main shaft motor 1 that is contained in the main shaft box 11 bottom plate, by gear 16, gear 17, gear 18, gear 22, drive main shaft 20 motion. Toggle the two main shaft speed change handles 12 in Fig. 2 to mesh the gears 16, 17, 18 and 22 to obtain the required rotational speed. These gears are sliding gears, and different gears mesh to obtain different rotation speeds of the main shaft 20 .

Embodiment 6, the spindle adopts a continuously variable speed milling head structure:

Figure 4 shows a continuously variable speed milling head, the main shaft motor 1 described in the utility model is a speed-regulating motor; The main shaft 20 is connected.

The transmission of the main shaft 20 is driven by the main shaft motor 1 installed behind the bottom plate of the main shaft box 11, through the active synchronous pulley 23, the synchronous belt 25 and the driven synchronous pulley 24, and the main shaft 20 is driven, and the variable speed range can be obtained between 0 and 6000rpm The speed is infinitely variable, that is, any speed from 0-6000rpm. Its speed change is realized directly through the spindle motor 1, and generally adopts DC or AC speed regulation methods, such as voltage regulation speed regulation, field weakening speed regulation, frequency conversion speed regulation, slip speed regulation and other speed regulation methods. The motor speed regulation method greatly simplifies the transmission mechanism of the spindle box and the speed change method. The operator can obtain any spindle speed within the above range as he likes by turning the speed regulating knob to meet the processing requirements.

In summary, the utility model has a larger processing range: the workbench is 300×1000mm, and similar products are only about 200×800mm; it has X, Y, Z directions (the longitudinal direction of the workbench, the transverse direction and the direction of the spindle box lifting) linkage Cutting tool function; with the support of the CNC system, various 2D and 3D parts can be processed; the spindle speed range is large: 0-6000rpm; the surface accuracy of the workpiece is 2-3 grades higher than that of ordinary milling machines; the headstock can adopt full gear speed change; The spindle box can also adopt gearless speed change, that is, stepless speed change, which saves the trouble of frequent replacement. It runs smoothly and has high transmission precision; the vertical guide rail of the bed adopts high-precision linear guide rail, and high-precision roller wires are used in X, Y, and Z directions. Rod, so that the positioning accuracy and repeatability reach 0.02 and 0.01mm; the utility model has all the functions of a small machining center; the parameters such as the workbench and the spindle speed are relatively large; therefore, it is relatively large in terms of the range of workpieces that can be processed and the flexibility of operation. General machining centers have more technical advantages; convenient, fast and reliable manual mechanism.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned methods, as long as various insubstantial improvements are made by adopting the method concept and technical solutions of the utility model, or Directly applying the ideas and technical solutions of the utility model to other occasions without improvement is within the protection scope of the utility model.

Claims (7)

1. numeric-control light milling machine, comprise spindle motor (1), main shaft (20), main spindle box (11), workbench (14), lathe bed (4), column (10) and table feed system, it is characterized in that: the workbench longitudinal feed mechanism of described table feed system and table traverse mechanism are respectively equipped with numerical-control motor (6,13), described numeric-control light milling machine is provided with digital control system, and described numerical-control motor (6,13) is connected with described digital control system.

2. according to the described numeric-control light milling machine of claim 1, it is characterized in that: between described numerical-control motor (6) and the workbench longitudinal feed mechanism, be connected by synchronous pulley driving mechanism between numerical-control motor (13) and the table traverse mechanism.

3. according to claim 1 or 2 described numeric-control light milling machines, it is characterized in that: establish main spindle hand feed mechanism (19) in the described main spindle box (11), establish collar bush (21) on the described main shaft (20), described collar bush (21) is being slidingly connected along the main-shaft axis direction with described main spindle box (11); Establish axis feeding handle (2) on the casing of described main spindle hand feed mechanism (19) outside described main spindle box (11), the shaft extension of described axis feeding handle (2) is connected with described collar bush (21) by pinion and rack to the end in the main spindle box (11).

4. according to claim 1 or 2 described numeric-control light milling machines, it is characterized in that: described main spindle box (11) is slidingly connected by main spindle box lift slide (9) and column (10); Establish numerical-control motor (7) on column (10), described main spindle box lift slide (9) is connected by the above numerical-control motor (7) of main spindle box elevating drive mechanism and column (10), and this numerical-control motor (7) is connected with described digital control system.

5. according to the described numeric-control light milling machine of claim 4, it is characterized in that: establish main spindle box slide set lever (8) on the described main spindle box lift slide (9).

6. according to claim 1 or 2 described numeric-control light milling machines, it is characterized in that: described main spindle box is established the gear graduation transmission mechanism in (11), and described spindle motor (1) is connected with described main shaft (20) by described gear graduation transmission mechanism; Establish main shaft speed change handle (12) on the casing outside described main spindle box (11), described main shaft speed change handle (12) carries out being connected of axial slip direction with gear (16,17,18,22) in the described gear graduation transmission mechanism.

7. according to claim 1 or 2 described numeric-control light milling machines, it is characterized in that: described spindle motor (1) is a buncher; Described spindle motor (1) is connected with main shaft (20) with driven synchronous pulley (24) by active synchronization belt wheel (23), synchronous belt (25).

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