A spindle lifting drive mechanism of a hardware machining machine

Abstract

The utility model discloses a kind of main shaft lifting drive mechanisms of hardware machining machine, it includes servo motor, is installed on base;Lead screw assembly, linkage in servo motor, and at least including there is second screw rod, nut seat is installed on second screw rod;Mounting seat, is fixed on nut seat;Several swing bar assemblies, along the periphery of mounting seat around arrangement, and all include the support of being installed on upper disc upper side, and swing bar is rotationally arranged on support, one end of swing bar is rotationally connected in mounting seat, the other end is rotationally connected in machining tool bit, the utility model adopts the mode of servo motor+ball screw to drive mounting seat to lift along second screw rod, and according to lever principle, swing bar assembly is driven to lift machining tool bit by cooperation stability, the parameter adjustment of servo motor is convenient, driving precision, can satisfy the high-speed operation of equipment, structure is stable, equipment life is long, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of hardware processing equipment technology, and in particular to a spindle lifting drive mechanism for a hardware processing machine. Background Technology

[0002] The working principle of a precision machining center for hardware involves high-precision cutting, forming, or surface treatment technologies, which aim to process metal raw materials into parts that meet strict requirements for size, shape, and surface quality, so as to be suitable for precision assembly on different products.

[0003] Currently, precision machining machines for hardware parts on the market are generally divided into linear stepper type and rotary type. Linear stepper type precision machining machines use a chain as the medium and indexing cams to achieve stepping conveying action. During the chuck conveying process, processing is performed at various workstations. This type of equipment has many chucks, the chain is prone to misalignment, and the processing accuracy is relatively poor. Therefore, rotary type precision machining machines are now more commonly chosen for precision machining of hardware parts.

[0004] Regarding disc-type precision machining machines for hardware, Chinese patent CN201710525911.X discloses a disc-type multi-station pen tip processing device. In this design, the lifting drive for the machining head uses a motor + cam-like rocker arm structure. The center line of the connecting shaft is eccentrically set relative to the center line of the output shaft. When the connecting shaft rotates with the output shaft of the first drive motor, the connecting rod moves up and down under the drive of the connecting shaft, thus driving the lifting rod to move up and down, and consequently driving the machining head to move up and down. However, in practical applications, this drive structure requires extremely high dimensional accuracy at the connections between various components. Even a small error can lead to a decrease in motion accuracy. Furthermore, when the equipment operates at high speed, fatigue wear easily occurs at the connections between various components, and vibration is generated due to inertial forces, leading to unstable equipment operation and reduced service life. Therefore, improvements are needed. Utility Model Content

[0005] To solve the above problems, this utility model proposes a spindle lifting drive mechanism for a hardware processing machine.

[0006] The technical solution adopted by this utility model is: a spindle lifting drive mechanism for a hardware processing machine. The hardware processing machine includes a frame and an upper support frame installed above the frame. The upper support frame includes a base, and a processing body is provided above the base. The processing body includes an upper plate, and a plurality of through holes are arranged around the edge of the upper plate. A processing tool is placed in each of the through holes. The spindle lifting drive mechanism includes:

[0007] A servo motor is mounted on the base.

[0008] A lead screw assembly, linked to the servo motor, and including at least a second lead screw, on which a nut seat is mounted;

[0009] The mounting base is fixed to the nut seat;

[0010] Several rocker arm assemblies are arranged around the periphery of the mounting base, and each includes a support mounted above the upper plate and a rocker arm rotatably mounted on the support. One end of the rocker arm is rotatably connected to the mounting base, and the other end is rotatably connected to the machining head.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] Preferably, the lead screw assembly further includes a first lead screw linked to the servo motor, a second lead screw arranged above the first lead screw, and a coupling provided between the first lead screw and the second lead screw.

[0013] Preferably, a first bearing seat and a second bearing seat are mounted on the second lead screw, the nut seat is disposed above the second bearing seat, and the processing body further includes a chassis arranged below the upper plate, the chassis is mounted on the first bearing seat, and the upper plate is mounted on the second bearing seat.

[0014] Preferably, a swing arm plate is fixedly installed above the upper plate, and several supports are fixedly installed above the swing arm plate.

[0015] Preferably, the outer wall of the mounting base is provided with an annular groove, and one end of the swing rod is provided with a roller, which extends into the annular groove.

[0016] Preferably, the machining head is provided with a fixing plate, and a guide rod arranged vertically is fixed on the fixing plate. The edge of the upper plate is provided with a plurality of guide holes, and the guide rod is inserted into the guide holes.

[0017] Preferably, the upper end of the guide rod extends above the fixed plate and forms an upper section. Two transition blocks are fixed on the upper section and are arranged at an interval between the upper and lower parts. The ends of the two transition blocks that are close to each other are arc-shaped. A connecting block is fixed to the end of the swing rod and extends between the two transition blocks.

[0018] Preferably, the servo motor is fixedly mounted below the base.

[0019] More preferably, the machining cutters are arranged at uniform intervals along the circumference of the upper plate, and the rocker arm assemblies are arranged at uniform intervals along the circumference of the rocker arm disk.

[0020] Compared with the prior art, this utility model has the following beneficial effects:

[0021] The mounting base is driven to rise and fall along the second screw using a servo motor and ball screw. Since the swing arm is rotatably mounted on the support, one end of the swing arm is rotatably connected to the mounting base, and the other end is rotatably connected to the machining head. Based on the lever principle, when the mounting base rises, it drives the machining head to fall; when the mounting base falls, it drives the machining head to rise. The servo motor drive allows for convenient parameter adjustment, enabling adjustment of the machining head's lifting speed and distance according to requirements. It provides precise drive, can meet the needs of high-speed equipment operation, has a stable structure, long service life, and strong practicality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a partial structural cross-sectional view of a hardware processing machine involved in one embodiment of this application;

[0024] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0025] Figure 3 This is a first-view assembly structure diagram of the upper plate, one of the rocker arm assemblies, and one of the machining heads in one embodiment of this application;

[0026] Figure 4 This is a second-view assembly structure diagram of the upper plate, one of the rocker arm assemblies, and one of the machining heads in one embodiment of this application;

[0027] Figure 5 This is an assembly structure diagram of the upper plate, the rocker arm assembly, and the machining head in one embodiment of this application;

[0028] Figure 6 This is an assembly structure diagram of the second lead screw, mounting base, rocker arm assembly and machining head in one embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the lower side view of the hidden frame and upper support frame of the hardware processing machine involved in one embodiment of this application.

[0030] Figure 8 This is an overall structural diagram of the hardware processing machine involved in one embodiment of this application.

[0031] The components in the attached diagram are labeled as follows: 1-Frame, 2-Upper support frame, 21-Base, 3-Servo motor, 4-Lead screw assembly, 41-First lead screw, 42-Coupling, 43-Second lead screw, 44-Nut seat, 5-Swing arm assembly, 51-Support, 52-Swing arm, 53-Connecting block, 6-Chassis, 61-First bearing seat, 7-Upper plate, 71-Second bearing seat, 72-Through hole, 73-Guide hole, 8-Machining cutter head, 81-Guide rod, 82-Fixing plate, 83-Adapter block, 9-Mounting seat, 91-Annular groove, 10-Swing arm plate.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Detailed implementation plan: See below Figures 1-8This utility model relates to a spindle lifting drive mechanism for a hardware processing machine. The hardware processing machine includes a frame 1 and an upper support frame 2 mounted above the frame 1. The upper support frame 2 includes a base 21, and a processing body is provided above the base 21. The processing body includes an upper plate 7, and a plurality of through holes 72 are provided around the edge of the upper plate 7. A processing tool 8 is placed in each of the through holes 72. The spindle lifting drive mechanism includes:

[0037] Servo motor 3 is mounted on base 21;

[0038] The lead screw assembly 4 is linked to the servo motor 3 and includes at least a second lead screw 43, on which a nut seat 44 is mounted;

[0039] Mounting base 9 is fixed on nut seat 44;

[0040] Several rocker arm assemblies 5 are arranged around the periphery of the mounting base 9, and each includes a support 51 mounted above the upper plate 7, and a rocker arm 52 rotatably mounted on the support 51. One end of the rocker arm 52 is rotatably connected to the mounting base 9, and the other end is rotatably connected to the machining head 8.

[0041] As a preferred embodiment of this example, please refer to Figure 1 As can be seen, the lead screw assembly 4 also includes a first lead screw 41 linked to the servo motor 3, a second lead screw 43 arranged above the first lead screw 41, and a coupling 42 is provided between the first lead screw 41 and the second lead screw 43.

[0042] Then, please continue reading. Figure 1 , Figure 2 and Figure 7 As can be seen, the second lead screw 43 is equipped with a first bearing seat 61 and a second bearing seat 71. The nut seat 44 is located above the second bearing seat 71. The processing body also includes a base plate 6 arranged below the upper plate 7. The base plate 6 is installed on the first bearing seat 61, and the upper plate 7 is installed on the second bearing seat 71.

[0043] When the mounting base 9 needs to be raised or lowered, the servo motor 3 operates and drives the first lead screw 41 to rotate (a coupling 42 is also provided between the motor rod of the servo motor 3 and the first lead screw 41). Since the coupling 42 is provided between the first lead screw 41 and the second lead screw 43, the second lead screw 43 can be driven to rotate. Since the nut seat 44 is mounted on the second lead screw 43 and the mounting base 9 is fixed on the nut seat 44, the nut seat 44 and the mounting base 9 can be driven to rise and fall together along the second lead screw 43.

[0044] In addition, in this embodiment, a support column is fixed above the base 21, and the chassis 6 is fixed above the support column. By setting a first bearing seat 61 at the center of the chassis 6 and a second bearing seat 71 at the center of the upper plate 7, and by having the second lead screw 43 pass through the first bearing seat 61 and the second bearing seat 71, the rotation of the second lead screw 43 can be made more stable, and there will be no swaying during operation.

[0045] Next, please refer to Figure 3 As can be seen, in this embodiment, a swing arm plate 10 is fixedly installed above the upper plate 7, and several supports 51 are fixedly installed above the swing arm plate 10.

[0046] Note that in this embodiment, the swing arm 52 is provided with a rotating shaft for rotating and cooperating with the support 51. A bearing is provided between the support 51 and the rotating shaft, thereby ensuring that the swing arm can rotate smoothly on the support 51.

[0047] Please see Figure 6 As can be seen, in this embodiment, the outer wall of the mounting base 9 is provided with an annular groove 91, and one end of the swing rod 52 is provided with a roller, which extends into the annular groove 91.

[0048] In this embodiment, a fixing plate 82 is provided on the machining head 8, and a guide rod 81 arranged vertically is fixed on the fixing plate 82. A plurality of guide holes 73 are provided around the edge of the upper plate 7, and the guide rod 81 is inserted into the guide holes 73. The upper end of the guide rod 81 extends above the fixing plate 82 and forms an upper section. Two transition blocks 83 arranged vertically at intervals are fixed on the upper section. The ends of the two transition blocks 83 that are close to each other are arc-shaped. A connecting block 53 is fixed to the end of the swing rod 52, and the connecting block 53 extends between the two transition blocks 83.

[0049] Here, the guide rod 81 and the guide hole 73 are provided to guide the lifting direction of the machining head 8, thereby making the machining head 8 rise and fall more smoothly along the extension direction of the through hole 72.

[0050] Furthermore, one end of the rocker arm 52 is rotatably connected to the annular groove 91 of the mounting base 9 via a roller, while the other end is placed between two adapter blocks 83. When the mounting base 9 rises, it will cause one end of the rocker arm 52 to rise along with it. According to the lever principle, at this time, the rocker arm 52 rotates around the support 51, driving the other end of the rocker arm 52 to descend, thereby driving the machining head 8 to descend.

[0051] Here, the arrangement of the rocker arm assembly results in less force acting on the mounting base 9 when driving the machining head 8 to rise and fall, thus saving more effort and making the equipment run more stably.

[0052] Note that in practical applications, other rotating structures can also be used at both ends of the rocker arm 52 to achieve a rotating connection with the mounting base 9 and the machining head 8.

[0053] In this embodiment, the parameters of the servo motor 3 are easy to adjust. As described above, when it is necessary to adjust the lifting speed and lifting distance of the machining head 8, the parameters of the servo motor 3 can be adjusted. The drive is precise and can meet the high-speed operation of the equipment. The structure is stable and the equipment has a long service life.

[0054] Please see Figure 1 and Figure 7 As can be seen, in this embodiment, the servo motor 3 is fixedly installed below the base 21.

[0055] More specifically, in this embodiment, the machining cutter heads 8 are arranged at uniform intervals along the circumference of the upper plate 7, and the rocker arm assembly 5 is arranged at uniform intervals along the circumference of the rocker arm plate 10.

[0056] The spindle lifting drive mechanism of this utility model is described above only as a preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. All equivalent structural transformations made under the inventive concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A spindle lifting drive mechanism for a hardware processing machine, the hardware processing machine comprising a frame and an upper support frame mounted above the frame, the upper support frame comprising a base, a processing body disposed above the base, the processing body comprising an upper plate, a plurality of through holes surrounding the edge of the upper plate, wherein processing cutters are fitted into the through holes, characterized in that, The spindle lifting drive mechanism includes: A servo motor is mounted on the base. A lead screw assembly, linked to the servo motor, and including at least a second lead screw, on which a nut seat is mounted; The mounting base is fixed to the nut seat; Several rocker arm assemblies are arranged around the periphery of the mounting base, and each includes a support mounted above the upper plate and a rocker arm rotatably mounted on the support. One end of the rocker arm is rotatably connected to the mounting base, and the other end is rotatably connected to the machining head.

2. The spindle lifting drive mechanism of a hardware processing machine according to claim 1, characterized in that, The lead screw assembly also includes a first lead screw linked to the servo motor, a second lead screw arranged above the first lead screw, and a coupling provided between the first lead screw and the second lead screw.

3. The spindle lifting drive mechanism of a hardware processing machine according to claim 2, characterized in that, The second lead screw is equipped with a first bearing seat and a second bearing seat, and the nut seat is located above the second bearing seat. The machining body also includes a chassis arranged below the upper plate, the chassis is mounted on the first bearing seat, and the upper plate is mounted on the second bearing seat.

4. The spindle lifting drive mechanism of a hardware processing machine according to any one of claims 1-3, characterized in that, A swing arm plate is fixedly installed above the upper plate, and several supports are fixedly installed above the swing arm plate.

5. The spindle lifting drive mechanism of a hardware processing machine according to claim 4, characterized in that, The outer wall of the mounting base is provided with an annular groove, and one end of the swing rod is provided with a roller, which extends into the annular groove.

6. The spindle lifting drive mechanism of a hardware processing machine according to claim 5, characterized in that, The machining head is provided with a fixing plate, and a guide rod arranged vertically is fixed on the fixing plate. The edge of the upper plate is provided with a number of guide holes, and the guide rod is inserted into the guide holes.

7. The spindle lifting drive mechanism of a hardware processing machine according to claim 6, characterized in that, The upper end of the guide rod extends above the fixed plate and forms an upper section. Two transition blocks are fixed on the upper section and are arranged at an interval. The ends of the two transition blocks that are close to each other are arc-shaped. A connecting block is fixed to the end of the swing rod and extends between the two transition blocks.

8. The spindle lifting drive mechanism of a hardware processing machine according to claim 1, characterized in that, The servo motor is fixedly installed below the base.

9. The spindle lifting drive mechanism of a hardware processing machine according to claim 4, characterized in that, The machining cutters are arranged at uniform intervals along the circumference of the upper plate, and the rocker arm assemblies are arranged at uniform intervals along the circumference of the rocker arm disk.

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