CN110814431A - Uneven self-adaptive lettering spindle head - Google Patents

Abstract

The invention discloses a non-planar self-adaptive engraving spindle head, which comprises a spindle seat (1), an adapter (2), a displacement converter (3), a spindle core (4), a probe (5) and a depth adjustment device (6) and the depth adjustment motor driver (7), the spindle base (1) includes a frame (8) and a shaft sleeve (9), the top of the frame (8) is provided with a spindle mounting hole (10), the frame The bottom of (8) is fixed with a shaft sleeve (9) located just below the main shaft installation hole (10), and the inner wall of the shaft sleeve (9) is provided with a shaft core positioning keyway (11) arranged along its axial direction. The end face of (9) is provided with a guide hole (12), and the spindle core (4) includes a spindle core body (13), a spindle core rack (14) and a carving knife (15). The beneficial effects of the invention are: compact structure, strong versatility, high lettering efficiency and simple operation.

Description

A non-planar self-adaptive lettering spindle head

technical field

The invention relates to the technical field of engraving spindle head structures, in particular to a non-planar self-adaptive engraving spindle head.

Background technique

CNC mechanical lettering has been widely used in production. However, in the actual production process, the inconsistency of the lettering depth caused by the uneven carving surface has not been well resolved. At present, there are two main solutions. One is to rely on workers to observe and adjust the coordinate system manually. This method is inefficient and difficult to guarantee the accuracy. In the numerical control program, it has high efficiency and good precision, but this device only supports the domestic Weihong system, which is difficult to be extended to actual production, and the device is expensive and difficult for ordinary manufacturers to purchase.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a non-planar self-adaptive engraving spindle head with compact structure, strong versatility, high engraving efficiency and simple operation.

The object of the present invention is achieved by the following technical solutions: a non-planar self-adaptive engraving spindle head, which includes a spindle seat, an adapter, a displacement converter, a spindle core, a probe, a depth adjustment device and a depth adjustment motor driver, the The main shaft seat includes a frame and a shaft sleeve. The top of the frame is provided with a main shaft installation hole, the bottom of the frame is fixed with a shaft sleeve directly below the main shaft installation hole, and the inner wall of the shaft sleeve is provided with a shaft arranged along its axial direction. The core locates the keyway, and the end face of the shaft sleeve is provided with a guide hole. The main shaft core includes a shaft core body, a shaft core rack and a carving knife. The shaft core body is arranged in the shaft sleeve and slides with the shaft sleeve. The shaft core rack The shaft core body extends along the axial direction and is fixed on the outer wall of the shaft core body. The shaft core rack is arranged in the shaft core positioning keyway. The shaft core keyway arranged in the axial direction and the engraving knife are fixed on the bottom of the shaft core body. An adapter key is arranged on the cylindrical surface, and the adapter key is slidably matched with the shaft core keyway. The depth adjustment device includes a depth adjustment motor and a depth adjustment worm gear. The depth adjustment motor is vertically fixed at the bottom of the frame, and the depth adjustment worm gear is installed. On the output shaft of the depth adjustment motor, the depth adjustment worm gear is engaged with the shaft core rack, the probe includes a probe head, a spring, a probe rack and a probe rod, the probe rod is arranged through the guide hole, and the probe rod There is a probe rack arranged along its axial direction on the cylindrical surface of the probe, the probe rack is located above the shaft sleeve, the probe rod is sleeved with a spring located under the shaft sleeve, and one end of the spring is fixed on the probe rod, The other end of the spring is fixed on the bottom surface of the shaft sleeve, the probe head is fixed on the bottom of the probe rod, the probe head is located under the carving knife under the elastic force of the spring, and the displacement converter includes a first-stage gear , vertical plate, secondary gear and pulse generator, the pulse generator and vertical plate are both arranged at the bottom of the frame, the primary gear is rotated and installed on the vertical plate, the primary gear meshes with the probe rack, and the secondary gear is installed On the input shaft of the pulse generator, the secondary gear meshes with the primary gear, the output port of the pulse generator is electrically connected with the depth adjustment motor driver through the signal line, and the depth adjustment motor driver is electrically connected with the depth adjustment motor through the signal line .

The frame includes a top plate, a bottom plate and a middle plate, the middle plate is fixed between the top plate and the bottom plate, and the shaft sleeve is fixed on the bottom plate.

The depth adjustment motor driver is fixed on the outer end surface of the intermediate plate.

The main shaft mounting hole is opened on the top plate.

The depth adjustment motor is located on the left side of the shaft sleeve, and the displacement converter is located on the right side of the shaft sleeve.

The present invention has the following advantages: the present invention has a compact structure, strong versatility, high lettering efficiency and simple operation.

Description of drawings

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

Figure 2 is the top view of the rack;

Figure 3 is the front view of the rack;

Figure 4 is a schematic diagram of the structure of the spindle core;

Fig. 5 is the top view of Fig. 4;

Figure 6 is a schematic diagram of the structure of the adapter;

Figure 7 is a schematic diagram of the structure of the probe;

Figure 8 is a schematic diagram of the structure of the displacement converter.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following:

As shown in Figures 1-8, a non-planar self-adaptive engraving spindle head includes a spindle base 1, an adapter 2, a displacement converter 3, a spindle core 4, a probe 5, a depth adjustment device 6 and a depth adjustment motor driver 7. The main shaft base 1 includes a frame 8 and a shaft sleeve 9. The top of the frame 8 is provided with a main shaft installation hole 10, and the bottom of the frame 8 is fixed with a shaft sleeve 9 directly below the main shaft installation hole 10. The inner wall of 9 is provided with a shaft core positioning keyway 11 arranged along its axial direction, and the end face of the shaft sleeve 9 is provided with a guide hole 12. , the shaft core body 13 is arranged in the shaft sleeve 9 and slidably matched with the shaft sleeve 9 , the shaft core rack 14 extends along the axial direction of the shaft core body 13 and is fixed on the outer wall of the shaft core body 13 , and the shaft core rack 14 is provided with In the shaft core positioning keyway 11 , the shaft core body 13 is provided with a through hole arranged along its axial direction, the through hole is provided with a shaft core keyway 16 arranged along its axial direction, and the engraving knife 15 is fixed on the shaft core body 13 The bottom of the adapter 2 includes the adapter clamping handle 17, the coupling 18 and the cylinder 19 arranged in sequence from top to bottom. The outer cylindrical surface of the cylinder 19 is provided with an adapter key 20. The adapter The key 20 is slidably fitted with the shaft core keyway 16. The depth adjustment device 6 includes a depth adjustment motor 21 and a depth adjustment worm gear 22. The depth adjustment motor 21 is vertically fixed at the bottom of the frame 8, and the depth adjustment worm gear 22 is installed on the depth adjustment worm gear 22. On the output shaft of the motor 21, the depth adjustment worm gear 22 is engaged with the shaft core rack 14, the probe 5 includes a probe head 23, a spring 24, a probe rack 25 and a probe rod 26, and the probe rod 26 is guided through The hole 12 is provided, the cylindrical surface of the probe rod 26 is provided with a probe rack 25 arranged along its axial direction, the probe rack 25 is located above the shaft sleeve 9, and the probe rod 26 is sleeved with a probe located below the shaft sleeve 9. The spring 24, one end of the spring 24 is fixed on the probe rod 26, the other end of the spring 24 is fixed on the bottom surface of the shaft sleeve 9, the probe head 23 is fixed on the bottom of the probe rod 26, the probe head 23 Under the action of the elastic force of the spring 24, the displacement converter 3 includes a primary gear 27, a vertical plate 28, a secondary gear 29 and a pulse generator 30, and the pulse generator 30 and the vertical plate 28 are both provided At the bottom of the frame 8, the primary gear 27 is rotatably mounted on the vertical plate 28, the primary gear 27 meshes with the probe rack 25, the secondary gear 29 is mounted on the input shaft of the pulse generator 30, and the secondary gear 29 Meshing with the primary gear 27, the output port of the pulse generator 30 is electrically connected to the depth adjustment motor driver 7 via a signal line, and the depth adjustment motor driver 7 is electrically connected to the depth adjustment motor 21 via a signal line.

The frame includes a top plate 31 , a bottom plate 32 and a middle plate 33 , the middle plate 33 is fixed between the top plate 31 and the bottom plate 32 , and the shaft sleeve 9 is fixed on the bottom plate 32 . The depth adjustment motor driver 7 is fixed on the outer end surface of the intermediate plate 33 . The spindle mounting hole 10 is opened on the top plate 31 . The depth adjustment motor 21 is located on the left side of the shaft sleeve 9 , and the displacement converter 3 is located on the right side of the shaft sleeve 9 .

The working process of the present invention is as follows: the main shaft of the cutting plotter machine tool is matched with the main shaft mounting hole 10, and is connected with the adapter clamping handle 17 through the coupling 18; the carving knife 15 and the probe head 23 are all on the engraving surface; The main shaft core 4 is driven by the cutting plotter machine tool, and then the carving knife 15 is engraved on the engraving surface. When the surface to be engraved is flush with the surface being engraved, the spindle head does not move; when the surface to be engraved is higher than the engraving surface. When the probe head 23 drives the probe rod 26 to push up, the probe rack 25 drives the primary gear 27 to rotate, the primary gear 27 drives the secondary gear 29 to rotate, and the secondary gear 29 causes the pulse generator 30 to generate pulses. The pulse generator 30 is sent to the depth adjustment motor driver 7, the depth adjustment motor driver 7 drives the depth adjustment motor 21 to rotate, the depth adjustment motor 21 drives the depth adjustment worm wheel 22 to rotate, and the depth adjustment worm wheel 22 drives the shaft core rack 14 to move upward, The shaft core rack 14 drives the main shaft core 4 to move upward, and at this time, the adapter key 20 slides down along the shaft core keyway 16 to ensure the smooth carving of the carving knife 15;

When the surface to be engraved is lower than the engraving surface, the probe head 23 drives the probe rod 26 to push down, the probe rack 25 drives the primary gear 27 to rotate in reverse, and the primary gear 27 drives the secondary gear 29 to reverse Rotation, the pulse generator 30 generates a reverse pulse, and sends it to the depth adjustment motor driver 7. The depth adjustment motor driver 7 then drives the depth adjustment motor 21 to rotate in the reverse direction. The depth adjustment motor 21 drives the depth adjustment worm gear 22 to reverse, and the depth adjustment worm gear 22 drives the shaft core rack 14 to move downward, and the shaft core rack 14 drives the main shaft core 4 to drive downward movement. At this time, the adapter key 20 slides up along the shaft core keyway 16 to ensure the smooth carving of the carving knife. Therefore, The spindle head can drive the engraving knife to move up and down, can adapt to various uneven engraving surfaces, greatly improves the engraving efficiency, and in addition, compared with the traditional engraving device, the structure is simplified, and the manufacturing cost is further reduced.

Claims (5)

1. A non-planar self-adaptive engraving spindle head, characterized in that: it comprises a spindle seat (1), an adapter (2), a displacement converter (3), a spindle core (4), a probe (5), a depth An adjustment device (6) and a depth adjustment motor driver (7), the main shaft seat (1) includes a frame (8) and a shaft sleeve (9), and a main shaft installation hole (10) is opened on the top of the frame (8), The bottom of the frame (8) is fixed with a shaft sleeve (9) located just below the main shaft installation hole (10), and the inner wall of the shaft sleeve (9) is provided with a shaft core positioning keyway (11) arranged along its axial direction, A guide hole (12) is provided on the end surface of the shaft sleeve (9), and the main shaft core (4) includes a shaft core body (13), a shaft core rack (14) and a carving knife (15), and the shaft core body (13) ) is arranged in the shaft sleeve (9) and slidably matched with the shaft sleeve (9), the shaft core rack (14) extends in the axial direction of the shaft core body (13) and is fixed on the outer wall of the shaft core body (13), The shaft core rack (14) is arranged in the shaft core positioning keyway (11), the shaft core body (13) is provided with a through hole arranged along its axial direction, and the through hole is provided with a shaft core key groove arranged along its axial direction. (16), the engraving knife (15) is fixed on the bottom of the shaft core body (13), and the adapter (2) includes the adapter clamping handle (17), the coupling ( 18) and the cylinder (19), an adapter key (20) is provided on the outer cylindrical surface of the cylinder (19), and the adapter key (20) is slidably fitted with the shaft core keyway (16), and the depth adjustment device ( 6) Including a depth adjustment motor (21) and a depth adjustment worm gear (22), the depth adjustment motor (21) is vertically fixed on the bottom of the frame (8), and the depth adjustment worm gear (22) is installed on the depth adjustment motor (21) On the output shaft, the depth adjustment worm gear (22) is engaged with the shaft core rack (14), and the probe (5) includes a probe head (23), a spring (24), a probe rack (25) and a probe The needle rod (26) is arranged through the guide hole (12), and the cylindrical surface of the probe rod (26) is provided with a probe rack (25) arranged along its axial direction, and the probe rack (25) is located above the shaft sleeve (9), the probe rod (26) is sleeved with a spring (24) located below the shaft sleeve (9), one end of the spring (24) is fixed on the probe rod (26), The other end of the spring (24) is fixed on the bottom surface of the shaft sleeve (9), the probe head (23) is fixed on the bottom of the probe rod (26), and the probe head (23) is at the bottom of the spring (24). Under the action of elastic force, the displacement converter (3) includes a primary gear (27), a vertical plate (28), a secondary gear (29) and a pulse generator (30), and the pulse generator (30) generates a pulse. The device (30) and the vertical plate (28) are both arranged at the bottom of the frame (8), the primary gear (27) is rotatably mounted on the vertical plate (28), the primary gear (27) and the probe rack (25) ) meshing, the secondary gear (29) is installed on the input shaft of the pulse generator (30), the secondary gear (29) meshes with the primary gear (27), the pulse generator (3) The output port of 0) is electrically connected with the depth adjustment motor driver (7) through the signal line, and the depth adjustment motor driver (7) is electrically connected with the depth adjustment motor (21) through the signal line. 2. The non-planar self-adaptive engraving spindle head according to claim 1, wherein the frame comprises a top plate (31), a bottom plate (32) and a middle plate (33), the top plate (31) and the An intermediate plate (33) is fixed between the bottom plates (32), and the shaft sleeve (9) is fixed on the bottom plate (32). 3 . The non-planar self-adaptive engraving spindle head according to claim 1 , wherein the depth adjustment motor driver ( 7 ) is fixed on the outer end surface of the intermediate plate ( 33 ). 4 . 4 . The non-planar self-adaptive engraving spindle head according to claim 1 , wherein the spindle mounting hole ( 10 ) is opened on the top plate ( 31 ). 5 . 5 . The non-planar self-adaptive engraving spindle head according to claim 1 , wherein the depth adjustment motor ( 21 ) is located on the left side of the shaft sleeve ( 9 ), and the displacement converter ( 3 ) is located on the left side of the shaft sleeve ( 9 ). 6 . Right side of bushing (9).

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