Spindle box device for numerical control machine tool

Abstract

The invention discloses a spindle box device for a numerical control machine tool, and relates to the technical field of machining machine tools. The spindle box device comprises a spindle box mechanism, a box body base and a spindle lifting mechanism; the box body base comprises a main base and lateral positioning bases, and the lateral positioning bases are arranged on the two sides of the main base, so that a lifting space is formed between the main base and the lateral positioning bases on the two sides; the spindle box mechanism comprises a spindle box body and a lateral adjusting seat driven by the spindle lifting mechanism in a lifting mode, the lateral positioning bases are provided with positioning rams, and lateral positioning faces are arranged on the two sides of the spindle box body and correspond to the positioning rams of the lateral positioning bases on the two sides respectively. The main shaft box body is mounted on the lateral adjusting seat, and the main shaft box body is pressed to the positioning ram on any side through the lateral adjusting seat so as to guide the main shaft box body to move up and down. The method is simple in maintenance and long in maintenance period.

Description

Technical Field

[0001] The present invention relates to the technical field of processing machine tools, and particularly to a spindle box device for a numerical control machine tool. Background Art

[0002] In large-scale processing machine tools, the spindle box is generally large in size. In high-precision machining applications, the lifting drive of the spindle box generally requires directional guidance to prevent the spindle box from experiencing lateral offset, which can affect machining accuracy and damage the drive components.

[0003] Moreover, based on the daily work of processing, the spindle box needs to be lifted and lowered frequently. Therefore, both the existing track guiding structure and the spindle box will experience wear, resulting in the separation of the guiding structure and the spindle box structure, thereby losing the directional lifting guidance. In this regard, during maintenance, not only the track guiding structure needs to be disassembled, but also the worn parts of the spindle box need to be corrected, resulting in high maintenance technical requirements and time consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a spindle box device for a numerical control machine tool, which is simple to maintain and has a long maintenance cycle.

[0005] To solve the above technical problem, the present invention provides a spindle box device for a numerical control machine tool, including a spindle box mechanism, a box body base for installing the spindle box mechanism, and a spindle lifting mechanism for driving the spindle box mechanism to lift and lower; Among them, the box body base includes a main base and a lateral positioning base. The lateral positioning bases are provided on both sides of the main base, so as to form a lifting space for the spindle box mechanism to move up and down between the main base and the two lateral positioning bases on both sides; The spindle box mechanism includes a spindle box body and a lateral adjustment seat driven by the spindle lifting mechanism to lift and lower. The lateral positioning base is provided with a positioning slide block, and both sides of the spindle box body are provided with lateral positioning surfaces, which respectively correspond to the positioning slide blocks of the two lateral positioning bases on both sides. The spindle box body is installed on the lateral adjustment seat, and the spindle box body presses against the positioning slide block on any one side through the lateral adjustment seat to guide the up and down movement of the spindle box body.

[0006] As an improvement of the above solution, a lubrication groove is provided on the surface of the positioning slide block, an oil supply channel for accessing lubricating oil is provided on the lateral positioning base, an oil receiving channel communicated with the lubrication groove is provided on the positioning slide block, and the oil supply channel is communicated with the lubrication groove through the oil receiving channel.

[0007] As an improvement to the above solution, the lubricating groove includes a horizontal lubricating groove and a connecting lubricating groove. Along the length direction of the positioning slide block, a plurality of the horizontal lubricating grooves are spacedly distributed on the positioning slide block, and adjacent horizontal lubricating grooves are communicated through the connecting lubricating groove, so that lubricating oil can flow from top to bottom through the contact stroke range of the lateral positioning surface on the positioning slide block.

[0008] As an improvement to the above solution, the connecting lubricating groove is inclined; Between adjacent horizontal lubricating grooves, the upper end of the connecting lubricating groove is connected to the right end of the upper horizontal lubricating groove, and the lower end of the connecting lubricating groove is connected to the left end of the lower horizontal lubricating groove.

[0009] As an improvement to the above solution, the lateral adjustment seat includes a movable seat connected to the main spindle box body and a lifting seat driven by the lifting of the main spindle lifting mechanism. The lifting seat is provided with a plurality of horizontally arranged transverse slide rails, and the transverse slide rails are longitudinally spacedly distributed on the lifting seat; The movable seat is provided with a transverse chute adapted to the transverse slide rail to be slidably connected to the lifting seat.

[0010] As an improvement to the above solution, the lateral adjustment seat further includes a pressing and locking member, and the pressing and locking member includes a locking rotating shaft and an eccentric wheel for laterally pressing the transverse slide rail; The top surface of the movable seat is provided with two adjustment through holes, and the transverse slide rail is located between the two adjustment through holes; Each transverse chute is communicated with the adjustment through hole, so that after the locking rotating shaft is inserted into the adjustment through hole, by rotating the locking rotating shaft, the eccentric wheel abuts against one side end face of the transverse slide rail, so that one side of the lateral positioning surface presses against the corresponding side of the positioning slide block.

[0011] As an improvement to the above solution, the locking rotating shaft is provided with a positioning ring for limiting the insertion depth of the locking rotating shaft into the adjustment through hole, and the diameter of the positioning ring is larger than the adjustment through hole, so that when the locking rotating shaft is inserted until the positioning ring abuts against the top surface of the movable seat, the eccentric wheel corresponds to the transverse chute.

[0012] As an improvement to the above solution, the locking rotating shaft is provided with a locking gear, and the top surface of the movable seat is provided with a self-locking worm gear meshing with the locking gear, so as to drive the locking rotating shaft to rotate by rotating the self-locking worm gear. As an improvement to the above solution, the oil receiving channel is communicated with the upper end of the lubricating groove, and the lower end of the lubricating groove is communicated with an oil suction channel, and the oil suction channel is provided with a sponge for sucking oil.

[0013] As an improvement of the above solution, the oil suction channel is inclined, the high - end of the oil suction channel communicates with the lubricating groove, and the low - end of the oil suction channel is communicated with an oil collecting container; The oil collecting container is pumped back to the oil delivery channel through an oil pump.

[0014] Implementing the present invention has the following beneficial effects: The present invention discloses a headstock device for a numerically controlled machine tool, including a headstock mechanism, a box body base, and a mechanism for driving the spindle to lift; the box body base includes a main base and a lateral positioning base, and the lateral positioning bases are provided on both sides of the main base, so as to form a lifting space for the up - and - down movement of the headstock mechanism between the main base and the two lateral positioning bases on both sides. Therefore, the two lateral positioning bases can be used to guide the lifting of the headstock; Moreover, the headstock mechanism includes a headstock body and a lateral adjustment seat driven by the spindle lifting mechanism to lift. The lateral positioning base is provided with a positioning slide block, and both sides of the headstock body are provided with lateral positioning surfaces corresponding to the positioning slide blocks of the two lateral positioning bases on both sides respectively. The setting of the positioning slide block can greatly reduce the wear of the headstock body, and during maintenance, only the positioning slide block with excessive wear needs to be replaced.

[0015] At the same time, the headstock body is installed on the lateral adjustment seat, and the headstock body presses against the positioning slide block on any one side through the lateral adjustment seat to guide the up - and - down movement of the headstock body. In this way, by alternately pressing against the positioning slide block on one side, the maintenance of the lateral positioning of the headstock body can be accelerated. At the same time, there is also enough time to repair the replaced positioning slide block, so as to reduce the maintenance cost without affecting production use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three - dimensional structural schematic diagram of the headstock device of the present invention; Figure 2 is an exploded structural schematic diagram of the headstock device of the present invention; Figure 3 is a cross - sectional structural schematic diagram of the lateral positioning base of the present invention; Figure 4 is a structural schematic diagram of the positioning slide block of the present invention; Figure 5 is a cross - sectional structural schematic diagram of the lateral adjustment seat of the present invention; Figure 6 is a top - view structural schematic diagram of the lateral adjustment seat of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] See Figure 1 、 2 and 3, the present invention provides a headstock device for a numerical control machine tool, including a headstock mechanism, a box body base for installing the headstock mechanism, and a main shaft lifting mechanism 1 for driving the headstock mechanism to lift and lower; Wherein, the box body base includes a main base 2 and a lateral positioning base 3. The lateral positioning bases 3 are provided on both sides of the main base 2, so as to form a lifting space a for the headstock mechanism to move up and down between the main base 2 and the two lateral positioning bases 3; The headstock mechanism includes a headstock body 5 and a lateral adjustment seat 6 driven by the main shaft lifting mechanism 1 to lift and lower. The lateral positioning base 3 is provided with a positioning slide 7. Lateral positioning surfaces 51 are provided on both sides of the headstock body 5, corresponding to the positioning slides 7 of the two lateral positioning bases 3 respectively. The headstock body 5 is installed on the lateral adjustment seat 6, and the headstock body 5 is pressed against the positioning slide 7 on any one side through the lateral adjustment seat 6 to guide the up and down movement of the headstock body 5. Preferably, the positioning slide 7 is made of a material with a low coefficient of friction and wear resistance such as Teflon.

[0019] Specifically, see Figure 3 and Figure 4 , a lubricating groove 71 is provided on the surface of the positioning slide 7, an oil supply channel 31 for accessing lubricating oil is provided on the lateral positioning base 3, and an oil receiving channel 72 communicating with the lubricating groove 71 is provided on the positioning slide 7. The oil supply channel 31 is communicated with the lubricating groove 71 through the oil receiving channel 72. The setting of the lubricating groove 71 can further reduce the wear between the headstock body 5 and the positioning slide 7, and at the same time can further reduce the running resistance of the headstock body 5.

[0020] In detail, see Figure 4 , the lubricating groove 71 includes a horizontal lubricating groove 711 and a connecting lubricating groove 712. Along the length direction of the positioning slide 7, a plurality of the horizontal lubricating grooves 711 are spaced apart on the positioning slide 7, and adjacent horizontal lubricating grooves 711 are communicated through the connecting lubricating groove 712, so that lubricating oil can flow from top to bottom through the contact stroke range of the lateral positioning surface 51 on the positioning slide 7, thereby ensuring that during the lifting and lowering operation of the headstock body 5, the contact between it and the positioning slide 7 can be lubricated by the lubricating groove 71.

[0021] In order to lubricate the main shaft housing 5 more comprehensively and improve the overall fluidity of the lubricating oil in the lubricating groove 71, the connecting lubricating groove 712 is inclined; between adjacent horizontal lubricating grooves 711, the upper end of the connecting lubricating groove 712 is connected to the right end of the upper horizontal lubricating groove 711, and the lower end of the connecting lubricating groove 712 is connected to the left end of the lower horizontal lubricating groove 711. Similarly, between adjacent horizontal lubricating grooves 711, the upper end of the connecting lubricating groove 712 can be connected to the left end of the upper horizontal lubricating groove 711, and the lower end of the connecting lubricating groove 712 can be connected to the right end of the lower horizontal lubricating groove 711.

[0022] In order to enable the lubricating oil to flow through the entire lubricating groove 71 by gravity, the oil receiving channel 72 communicates with the upper end of the lubricating groove 71. The upper end of the lubricating groove 71 is the highest point of the lubricating groove 71. Therefore, when the lubricating oil flows in from the upper end of the lubricating groove 71, it can spread completely through the entire lubricating groove 71 by gravity.

[0023] Moreover, in order to prevent the lubricating oil from overflowing the lubricating groove 71 and further improve the lubrication effect of the lubricating groove 71, an oil suction channel 73 is connected to the lower end of the lubricating groove 71, and a sponge 74 for oil suction is provided in the oil suction channel 73.

[0024] Under the action of the sponge 74, the fluidity of the lubricating oil can be maintained to a certain extent. On the other hand, the sponge 74 is provided to slowly suck the lubricating oil to avoid too fast fluidity of the lubricating oil.

[0025] Moreover, the oil suction channel 73 is inclined. The high end of the oil suction channel 73 communicates with the lubricating groove 71, and the low end of the oil suction channel 73 communicates with an oil collecting container 8. Therefore, the inclined setting of the oil suction channel 73 helps to direct the lubricating oil to the oil collecting container 8.

[0026] The lateral positioning base 3 is provided with an oil storage tank 9 for releasing lubricating oil. The oil storage tank 9 communicates with the oil delivery channel 31 to release lubricating oil to the lubricating groove 71. Preferably, the lubricating oil in the oil collecting container 8 can be pumped back to the oil storage tank 9 by an oil pump 81 to supply oil to the oil delivery channel 31 in a cycle. Moreover, the sponge 74 is provided with a certain filtering function to extend the service life of the lubricating oil. The oil collecting container 8 and the oil pump 81 are connected by a pipeline (not shown in the figure).

[0027] See Figure 5 and Figure 6, the lateral adjustment seat 6 includes a movable seat 61 connected to the main spindle housing 5 and a lifting seat 62 driven by the lifting of the main spindle lifting mechanism 1. The lifting seat 62 is provided with a plurality of horizontally arranged transverse slide rails 621, and the transverse slide rails 621 are longitudinally spaced apart on the lifting seat 62; the movable seat 61 is provided with transverse sliding grooves 611 adapted to the transverse slide rails 621 to be slidably connected to the lifting seat 62. Therefore, maintenance personnel can translate the movable seat 61 to make the main spindle housing 5 contact the un-worn positioning slide pillow 7 on the other side. Preferably, the main spindle lifting mechanism 1 is a screw drive mechanism, and the screw drive mechanism generally includes a screw driven by a servo motor and a nut seat threadedly connected to the screw, and the nut seat is connected to the lifting seat 62. Preferably, the positioning slide pillow 7 can be connected to the lateral positioning base 3 by means of screw connection to facilitate the replacement and maintenance of the positioning slide pillow 7.

[0028] To facilitate the adjustment of the contact pressure between the main spindle housing 5 and the positioning slide pillow 7, the lateral adjustment seat 6 further includes a pressing and locking member, and the pressing and locking member includes a locking rotating shaft 63 and an eccentric wheel 64 for laterally pressing the transverse slide rail 621; The top surface of the movable seat 61 is provided with two adjustment through holes 612, and the transverse slide rail 621 is located between the two adjustment through holes 612; each transverse sliding groove 611 communicates with the adjustment through hole 612, so that after the locking rotating shaft 63 is inserted into the adjustment through hole 612, by rotating the locking rotating shaft 63, the eccentric wheel 64 abuts against one end face of the transverse slide rail 621, so that one side of the lateral positioning surface 51 presses against the corresponding side of the positioning slide pillow 7. Therefore, the contact pressure between the main spindle housing 5 and the positioning slide pillow 7 can be controlled by driving and screwing the locking rotating shaft 63.

[0029] Moreover, the locking rotating shaft 63 is provided with a positioning ring 65 for defining the insertion depth of the locking rotating shaft 63 into the adjustment through hole 612, and the diameter of the positioning ring 65 is larger than that of the adjustment through hole 612, so that when the locking rotating shaft 63 is inserted until the positioning ring 65 abuts against the top surface of the movable seat 61, the eccentric wheel 64 corresponds to the transverse sliding groove 611, thus facilitating the convenient assembly operation of maintenance personnel.

[0030] The locking rotating shaft 63 is provided with a locking gear 66, and the top surface of the movable seat 61 is provided with a self-locking worm 67 meshing with the locking gear 66, so that by rotating the self-locking worm 67, the locking rotating shaft 63 is driven to rotate. With such a setting, it is possible to avoid excessive deviation of the main spindle housing 5 after the positioning slide pillow 7 is excessively worn. Correspondingly, the movable seat 61 is provided with a shaft seat for installing the self-locking worm.

[0031] Preferably, the outer contour of the eccentric wheel 64 is provided with a contact layer having a small amount of deformation performance, and the contact layer can be made of a material with a small elastic deformation amount such as hard plastic or polyurethane.

[0032] Preferably, the two adjusting through holes 612 are each provided with the pressing and locking member. After pressing and fixing with one of the pressing and locking members first, then screw the self-locking worm 67 of the pressing and locking member on the other side to make the meshing between the self-locking worm 67 and the locking gear 66 in a state of mutual pressing, so as to eliminate the influence of virtual positions.

[0033] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A spindle box device for a CNC machine tool, characterized in that: It includes a spindle box mechanism, a box base for mounting the spindle box mechanism, and a spindle lifting mechanism for driving the lifting of the spindle box mechanism; Wherein, the box base includes a main base and lateral positioning bases. The lateral positioning bases are provided on both sides of the main base, so as to form a lifting space for the up-and-down movement of the spindle box mechanism between the main base and the lateral positioning bases on both sides; The spindle box mechanism includes a spindle box body and a lateral adjustment seat driven by the spindle lifting mechanism to lift. The lateral positioning base is provided with a positioning slide block. Lateral positioning surfaces are provided on both sides of the spindle box body to correspond to the positioning slide blocks of the lateral positioning bases on both sides respectively. The spindle box body is mounted on the lateral adjustment seat, and the spindle box body is pressed against the positioning slide block on any one side through the lateral adjustment seat to guide the up-and-down movement of the spindle box body.

2. The headstock device for a numerically controlled machine tool according to claim 1, characterized in that, A lubricating groove is provided on the surface of the positioning slide block. The lateral positioning base is provided with an oil delivery channel for accessing lubricating oil. The positioning slide block is provided with an oil receiving channel communicating with the lubricating groove. The oil delivery channel is communicated with the lubricating groove through the oil receiving channel.

3. The spindle box device for a CNC machine tool according to claim 2, characterized in that: The lubricating groove includes a horizontal lubricating groove and a connecting lubricating groove. Along the length direction of the positioning slide block, a plurality of the horizontal lubricating grooves are spacedly distributed on the positioning slide block. Adjacent horizontal lubricating grooves are communicated through the connecting lubricating groove, so that lubricating oil flows through the contact stroke range of the lateral positioning surface on the positioning slide block from top to bottom.

4. The spindle box device for a CNC machine tool according to claim 3, characterized in that: The connecting lubricating groove is inclined; Between adjacent horizontal lubricating grooves, the upper end of the connecting lubricating groove is connected to the right end of the upper horizontal lubricating groove, and the lower end of the connecting lubricating groove is connected to the left end of the lower horizontal lubricating groove.

5. The headstock device for a numerically controlled machine tool according to claim 1, characterized in that, The lateral adjustment seat includes a movable seat connected to the spindle box body and a lifting seat driven by the spindle lifting mechanism to lift. The lifting seat is provided with a plurality of horizontally arranged transverse slide rails, and the transverse slide rails are longitudinally spacedly distributed on the lifting seat; The movable seat is provided with transverse sliding grooves adapted to the transverse slide rails to slidably connect to the lifting seat.

6. The headstock device for a numerically controlled machine tool according to claim 5, characterized in that, The lateral adjustment seat further includes a pressing and locking member. The pressing and locking member includes a locking rotating shaft and an eccentric wheel for laterally pressing the transverse slide rail; Two adjustment through holes are provided on the top surface of the movable seat, and the transverse slide rail is located between the two adjustment through holes; Each transverse sliding groove communicates with the adjustment through hole, so that after the locking rotating shaft is inserted into the adjustment through hole, by rotating the locking rotating shaft, the eccentric wheel abuts against one end face of the transverse slide rail, so that one lateral positioning surface is pressed against the corresponding positioning slide block.

7. The spindle box device for a CNC machine tool according to claim 6, characterized in that: The locking rotating shaft is provided with a positioning ring for limiting the insertion depth of the locking rotating shaft into the adjustment through hole. The diameter of the positioning ring is larger than the adjustment through hole, so that when the locking rotating shaft is inserted until the positioning ring abuts against the top surface of the movable seat, the eccentric wheel corresponds to the transverse sliding groove.

8. The spindle box device for a CNC machine tool according to claim 7, characterized in that: The locking rotating shaft is provided with a locking gear, and a self-locking worm meshing with the locking gear is provided on the top surface of the movable seat, so as to drive the locking rotating shaft to rotate by rotating the self-locking worm.

9. The headstock device for a numerically controlled machine tool according to claim 3, characterized in that, The oil receiving channel is communicated with the upper end of the lubricating groove, and the lower end of the lubricating groove is communicated with an oil suction channel, and the oil suction channel is provided with a sponge for absorbing oil.

10. The headstock device for a numerically controlled machine tool according to claim 9, characterized in that, The oil suction channel is arranged at an angle, the upper end of the oil suction channel is connected to the lubrication groove, and the lower end of the oil suction channel is connected to the oil collecting container; The lubricating oil in the oil collecting container is pumped back to the oil delivery channel by an oil pump.

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