CN1785585A - Composite drilling cutting milling sample machine for laboratory use - Google Patents

Abstract

The invention relates to a drilling and milling combination machine tool for processing laboratory samples in metallurgy and other industries. The middle part of the machine frame is equipped with a movable worktable, and the upper part is equipped with a drilling and milling power head. The workbench is equipped with a fixture. The driven wheel for drilling and milling is installed in the middle of the lifting drive screw rod driven by the motor. The driven wheel for drilling and milling is respectively connected with the tool bar shaft of the drilling and milling power head through the spline mechanism in the center. The cutter rod bushing of the milling power head is fixed on the central joint plate, and the central joint plate and the upper vertical plate fixed under the upper horizontal plate form a vertical movement pair, and a nut screwed with the lifting driving screw is fixed. The mechanism configuration of the invention is ingenious and reasonable, coordinated with each other and compact, can quickly clamp various shape sample workpieces, and realize rapid switching of workpieces between drilling and milling stations, thereby meeting the special requirements of laboratory sample processing.

Description

Combined drilling and milling prototype for laboratory

technical field

The invention relates to a combined drilling and milling machine tool, in particular to a combined machine tool used for processing laboratory samples in metallurgy and other industries, and belongs to the technical field of laboratory mechanical processing facilities.

Background technique

Laboratory mechanical processing equipment needs to meet the requirements of cutting and processing metallurgical samples in a short period of time, so as to facilitate timely metallographic analysis. The Chinese patent with the application date of July 6, 2004 and the application number CN200420062481.0 discloses a "Special Rapid Milling Prototype for Laboratory", which includes a bed, a spindle box, a spindle, a milling cutter, a lifting mechanism, a longitudinal The feed mechanism, transverse feed mechanism, hydraulic device, workbench and V-shaped clamp are also equipped with a special magnetic clamp, which eliminates the need for repeated tool setting when milling samples. Therefore, the sample can be processed rapidly. However, this machine cannot quickly complete drilling and milling. Therefore, when both spectral analysis after milling and infrared sulfur detection after drilling are required, additional drilling equipment must be equipped.

The search finds that the Chinese patent application CN87200672 discloses a "portable woodworking drilling and milling combined machine" suitable for woodworking. From the point of view of the mechanism, the machine essentially fixedly connects a milling cutter shaft to the wheel shaft of the original portable woodworking drilling rig, and added a milling table above the machine base to increase the milling function. Since the drilling and milling speeds cannot be controlled separately, so Not suitable for laboratory metallurgical sample processing. Other existing combined machine tools of this type cannot meet the needs of laboratory sample processing due to various reasons such as the inability to realize rapid transfer of workpieces.

Contents of the invention

The primary purpose of the present invention is to propose a laboratory combined drilling and milling prototype machine with a simple structure, reasonable configuration of drilling and milling movement transmission, and rapid switching of workpieces between drilling and milling stations. , so as to meet the special needs of laboratory sample processing.

A further object of the present invention is to propose a combined drilling and milling prototype machine for laboratory use that can quickly clamp workpieces of various shapes on the basis of realizing rapid transfer of workpieces.

In order to achieve the above primary purpose, the middle part of the frame of the laboratory combined drilling and milling prototype machine of the present invention is equipped with a movable worktable, and the upper part is equipped with a drilling and milling power head, and a clamp is installed on the said workbench, and it is characterized in that: The drilling and milling driven wheels driven by the motor are respectively installed on both sides of the upper horizontal plate of the frame, and the lifting drive screw rod driven by the motor is installed in the middle. It is connected with the cutter bar shaft of the milling power head, and the cutter bar bushing of the drilling and milling power head is fixed on the center link plate, and the center link plate and the upper vertical plate fixed under the upper horizontal plate form a vertical movement pair , and is fixed with a nut screwed with the lifting drive screw.

It is not difficult to understand that since the drilling and milling power heads are arranged left and right, the workpiece on the mobile table can quickly switch between the two stations, so as to meet the processing requirements for timely drilling after milling. At the same time, since the drilling and milling power heads are respectively driven by motors, it is easy to obtain the required low-speed drilling and high-speed milling through control; while the lifting movement of the drilling and milling power heads is controlled through the linkage of the lifting screw nut mechanism, The structure of the whole machine is simple and compact, which is very suitable for metallographic analysis laboratories.

In order to achieve a further purpose, the lower part of the frame of the combined drilling and milling prototype in the laboratory supports a worktable moving driving screw, and the nut screwed with the moving driving screw is fixed on the worm gear box, and the worm gear box is equipped with There is an upper panel of the workbench, which is equipped with a horizontal worm gear driven by a worm. The worm gear is coaxially connected with the internal gear. The internal gears are respectively meshed with three evenly distributed pinions. The three curved blocks on the panel are fixedly connected to form a three-jaw clamping structure around the shaft center of the worm wheel, and the side of the curved block is formed with a curved profile with increasing pole diameter.

In this way, when the worm wheel rotates under the drive of the worm, the internal gear will drive the three small gears to rotate synchronously. As a result, the curved block forming the three-jaw clamping structure will gradually shrink the inner area, and the worktable will be quickly moved by the function of the curved profile. Samples of various shapes are clamped on the panel. After that, driven by the screw nut mechanism, the worm gear box moves left and right together with the workpiece, and under the action of the milling and drilling bits, the required drilling and drilling processing is completed in time.

It can be seen that the mechanism configuration of the present invention is ingenious and reasonable, coordinated and compact with each other, can quickly clamp sample workpieces of various shapes, and realize rapid switching of workpieces between drilling and milling stations, thereby meeting the special needs of laboratory sample processing .

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

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

FIG. 2 is a side view of FIG. 1 .

FIG. 3 is a schematic diagram of the cross-sectional structure along line A-A of FIG. 1 .

Detailed ways

Embodiment one

The laboratory combined drilling and milling prototype of the present embodiment is shown in Figure 1. The frame 163 is mainly composed of the lower vertical plate 125, the middle horizontal plate 124 fixed on the lower vertical plate, and the upper vertical plate 120 fixed on the middle horizontal plate. 1. The upper horizontal plate 67 fixed on the upper vertical plate constitutes. The two sides of the upper horizontal plate 67 are respectively equipped with a drilling driven wheel driven by a motor—a large synchronous pulley 138 and a milling driven wheel—a zigzag pulley 74, and a lifting drive screw pair driven by a servo motor 116 is installed in the middle—a single Nut ball screw pair 101. The large synchronous pulley 138 and the saw-toothed pulley 74 are respectively connected with the main drill rod 139 of the drilling power head and the spline shaft at the upper end of the main tool bar 65 of the milling power head through the spline hole in its center, so the main drill rod 139 and The main cutter bar 65 is constrained in the circumferential direction, and can be driven to rotate by respective drive motors, and can move up and down in the axial direction. The axle sleeves 145 and 65 of the main drill rod 139 and the main cutter bar 65 are all fixed on the central joint plate 167, and the middle part of the central joint plate is fixed with a nut screwed with the lifting drive screw mandrel through the screw mandrel base plate 96. The back side of the connecting plate 167 and the guide rail 121 fixed on the upper vertical plate constitute a vertical movement pair. When the servo motor 116 drives the lifting drive screw to rotate, the single-nut ball screw pair can drive the connecting plate 167 to move up and down along the guide rail 121, and then drive the drilling and milling power head to move up and down.

The lower part of the frame is supported with a horizontal workbench to move the driving screw 19, and the screw and the nut fixed on the worm gear box 45 form a single-nut ball screw pair. The rear side of the worm gear box 45 and two rolling guide rails 34 fixed on the lower vertical plate 125 constitute a guide rail pair. When the motor drives the screw mandrel 19 to rotate, it can drive the worm gear box 45 to move left and right, thereby driving the workbench to switch between drilling and milling stations.

The horizontal worm gear 43 driven by the worm 14 is housed in the worm gear box 45 (referring to FIG. 3 ). The top of the pinion 40 is respectively fixedly connected with three curved blocks 38 on the upper panel 32 to form a three-jaw clamping structure around the worm wheel axis. When the worm rotates under the drive of the motor, the worm wheel and the internal gear can drive the three small gears to rotate synchronously, and then drive the curve block to quickly clamp or loosen various shapes of sample workpieces.

In addition, the laboratory combined drilling and milling prototype of this embodiment also has the following structural features:

An upper cylinder 99 is installed in the middle and lower part of the connecting plate 167, and a lower cylinder 52 is installed in the center of the worm wheel, so the hot sample can be pinched and held by means of the pressure head 53 and the top block 51 respectively fixed on the lower end of the upper cylinder 99 and the upper end of the lower cylinder 52 , so that the three-jaw clamping mechanism can clamp it. And the upper cylinder bore is greater than the lower cylinder bore. When the workpiece is not clamped, the upper end surface of the top block 51 is flush with the upper end surface of the curved block 38. When the cylinder is pressurized, the upper cylinder presses down the lower cylinder so that the edge of the workpiece is just in position to be clamped by the curved block.

The top block 51 passes through the air box 37 leading to the compressed air source, and the periphery and the air box form an air outlet gap. During work, the compressed air from the air pipe 36 will be blown out from the air outlet gap from the bottom to the top, which can play a cooling role, and can prevent chips from falling into the worm gear box, killing two birds with one stone.

In order to facilitate the accumulation of drilling chips, the lower end of the drilling head bushing 145 is fixed with a sheath 147 covering the outside of the drill holder 151. A spring 149 is housed in the sheath, and a transparent plexiglass cover 150 is inserted in the lower end. When drilling, under the action of the spring, the lower end of the plexiglass cover is always attached to the surface of the workpiece, so that the drilling chips are accumulated in the cover, which is convenient for sampling and testing.

The combined drilling and milling prototype machine for the laboratory in this embodiment has an ingenious and perfect design and a compact structure. It can quickly clamp workpieces of various shapes and realize rapid switching of workpieces between drilling and milling stations, which can well meet the needs of laboratory sample processing. Special needs.

In addition to the above-mentioned embodiments, the present invention can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (8)

1. composite drilling cutting milling sample machine for laboratory use, central rack is installed removable worker's platform, drilling and milling unit head are installed in top, on described worker's platform anchor clamps are housed, it is characterized in that: install respectively by the drilling of driven by motor and milling driven pulley the upper cross plate both sides of described frame, the middle lifting that driven by motor is installed drives screw mandrel, described drilling and milling driven pulley are connected with the cutter spindle of drilling and milling unit head by the spline mechanism at its center respectively, the knife bar axle sleeve of described drilling and milling unit head is fixed on the middle yoke plate, yoke plate constitutes vertical moving sets with upper vertical plate under being fixed on upper cross plate in described, and is fixed with the nut that screws with lifting driving screw mandrel.

2. according to the described composite drilling cutting milling sample machine for laboratory use of claim 1, it is characterized in that: described frame lower is supported with worker's platform and moves the driving screw mandrel, the nut that screws with described mobile driving screw mandrel is fixed on the worm gear case, worker's platform top panel is housed on the described worm gear case, in the horizontal worm gear of worm drive is housed, described worm gear is connected with internal gear is coaxial, described internal gear respectively with three uniform pinion, the top of described pinion is connected with three curve pieces that are positioned on the top panel respectively, form the three-jaw clamping structure around the worm gear axle center, the side of described curve piece is shaped on the cumulative curved profile in utmost point footpath.

3. according to claim 1 or 2 described composite drilling cutting milling sample machine for laboratory use, it is characterized in that: described frame mainly by following riser, be fixed on down middle transverse slat on the riser, be fixed on the upper vertical plate on the middle transverse slat, the upper cross plate that is fixed on the upper vertical plate constitutes.

4. according to the described composite drilling cutting milling sample machine for laboratory use of claim 3, it is characterized in that: the rear side of described worm gear case constitutes guideway with two rolling guides that are fixed on down on the riser.

5. according to the described composite drilling cutting milling sample machine for laboratory use of claim 4, it is characterized in that: upper cylinder is equipped with in the yoke plate middle and lower part in described, and lower cylinder is equipped with at described worm gear center, and described upper cylinder lower end and lower cylinder upper end is fixedly pressure head and jacking block respectively.

6. according to the described composite drilling cutting milling sample machine for laboratory use of claim 5, it is characterized in that: described upper cylinder cylinder diameter is greater than the lower cylinder cylinder diameter.

7. according to the described composite drilling cutting milling sample machine for laboratory use of claim 6, it is characterized in that: described jacking block passes from the gas tank of logical compressed air source, and periphery forms the gap of giving vent to anger with gas tank.

8. according to the described composite drilling cutting milling sample machine for laboratory use of claim 7, it is characterized in that: the axle sleeve lower end of described drill unit is fixed with and covers on the outer sheath of drill jig, in the described sheath spring is housed, and the lower end is fitted with the transparent organic glass cover.

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