A lathe spindle brake device

Abstract

The present invention discloses a lathe spindle braking device, comprising an outer shell and a spindle body. The spindle body is provided with a brake pad. The outer shell is provided with a plurality of brake discs for braking the brake pad. An annular seat is symmetrically arranged on both sides of the brake pad. The opposite side end surfaces of the two groups of annular seats are provided with a slide groove for the brake disc to slide along the axial direction of the spindle. A local synchronization component for driving the brake discs on both sides to synchronously clamp the brake pad is connected between the two groups of slide grooves arranged at each location. The local synchronization component comprises a sealing guide rod, a synchronization rod and a guide shaft. The sealing guide rod is arranged parallel to the spindle body and fixed between the two groups of slide grooves. The synchronization rod is rotatably arranged inside the sealing guide rod. One end of the guide shaft is fixed on the synchronization rod, and the other end passes through the sealing guide rod and extends to the inside of the brake disc to form a sliding connection. The present invention can enable the brake disc to brake the brake pad synchronously from both sides of the brake pad, and the position of the brake disc can be adjusted regularly to ensure that the distance between each group of brake discs and the brake pad is the same.

Description

Technical Field

[0001] The invention relates to the technical field of spindle brakes, in particular to a spindle brake device for a lathe. Background Art

[0002] At present, the spindle is the core component of the machine tool, and its working performance directly affects the processing quality and production efficiency of the machine tool. During the operation of the spindle, when the spindle needs to slow down, a braking system or a brake system is needed to brake and slow down the spindle. In the prior art, a brake pad is usually set on the spindle, and the brake disc is driven by hydraulic pressure to move close to the brake pad so that the brake disc contacts the brake pad surface and brakes are achieved.

[0003] However, the overall processing of the brake disc is difficult, and generally a multi-group split brake disc arranged along the circumference is used. However, after a period of time of braking the brake pads with the split brake discs, there will be uneven wear of the multiple brake discs, and the hydraulic driving force needs to be stable. The unstable hydraulic driving force and the uneven wear of the brake discs will cause a large radial force to be generated when the brake pads are contacted after movement for braking. It will also cause each group of brake discs to contact the brake pads at different times, affecting the dynamic balance of the spindle and causing the spindle axis to shift, requiring shutdown for maintenance, reducing the service life of the spindle and increasing maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to provide a lathe spindle brake device to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lathe spindle brake device, comprising a shell and a mechanical spindle assembly arranged on the shell, the spindle assembly comprising a spindle body, a brake pad is arranged on the spindle body, and a brake mechanism for braking the brake pad is arranged on the shell, and an outer ring column is installed at one end of the shell located in the axial direction of the spindle body, the brake mechanism comprises an annular seat arranged in the outer ring column, and a plurality of groups of brake discs evenly arranged along the circumference of the annular seat, the annular seat and the annular column are coaxially arranged with the spindle body, the annular seat is symmetrically arranged on both sides of the brake pad, and the end surfaces of the two groups of annular seats on opposite sides are provided with sliding grooves for the brake discs to slide along the axial direction of the spindle, and the annular seat is provided with a slide groove for passing into each group of slide discs. The hydraulic oil passage of the groove, each group of slide grooves on the annular seats on both sides are arranged one by one opposite to each other, and a local synchronization component is connected between the two groups of slide grooves arranged at each location, which drives the brake discs on both sides to synchronously clamp the brake pads. The local synchronization component includes a sealing guide rod, a synchronization rod and a guide shaft. The sealing guide rod is arranged in parallel with the main shaft body and fixed between the two groups of slide grooves. The synchronization rod is rotatably arranged inside the sealing guide rod. One end of the guide shaft is fixed on the synchronization rod, and the other end passes through the sealing guide rod and extends to the inside of the brake disc. The brake discs arranged on both sides are sleeved on the sealing guide rod through the sleeve hole and form a sliding connection. A local spiral groove for the guide shaft to slide is provided on the inner wall of the sleeve hole, and a local annular groove for the guide shaft to rotate is provided on the outer wall of the sealing guide rod.

[0006] It also includes an integral synchronization component, wherein the two axial ends of the synchronization rod respectively pass through the annular seat, and the integral synchronization component includes a synchronization ring and a synchronization gear. The synchronization gear is symmetrically arranged at the two axial ends of the synchronization rod, and multiple groups of synchronization gears arranged on the same side are distributed on the circumferential side of the synchronization ring and are meshed with the synchronization ring.

[0007] Preferably, an annular sleeve is rotatably provided on the synchronization rod, the guide shaft is fixed on the outer wall of the annular sleeve, a rotating groove for the synchronization rod to rotate is provided inside the sealing guide rod, an annular inner groove for the annular sleeve to rotate is provided on the inner wall of the rotating groove, and a fixing component for fixing the annular sleeve to the synchronization rod is provided inside the synchronization rod.

[0008] Preferably, the fixing assembly includes a locking rod threadedly connected to the synchronization rod, the synchronization rod is located at the annular sleeve and connected to an expansion ring, the outer wall of the expansion ring is arranged to fit the inner wall of the annular sleeve, the outer wall of the locking rod is provided with an annular embedding groove for embedding the inner ring wall of the expansion ring, and an anti-rotation assembly for limiting the locking rod from rotating with the synchronization rod is provided on the synchronization gear ring away from the side of the outer shell, and the synchronization rod and the locking rod rotate relative to each other to cause the inner ring wall of the expansion ring to sink into or out of the annular embedding groove.

[0009] Preferably, an extension ring is rotatably provided on the annular seat on the side away from the outer shell, and the extension ring is arranged on the end face of the annular seat away from the outer shell and is coaxially arranged with the synchronous gear ring. The anti-rotation assembly includes an arc-shaped rack that slides radially along the synchronous gear ring, an anti-rotation rod and a cam arranged on the outer wall of the extension ring. The anti-rotation rod is fixed to one end of the axial direction of the locking rod, and the other end of the anti-rotation rod passes through the synchronous gear and the synchronous gear ring and faces the arc-shaped rack. The anti-rotation rod is provided with a tooth portion at one end of the anti-rotation rod facing the arc-shaped rack. The extension ring is provided with a driving cam protrusion that abuts against the outer wall of the arc-shaped rack to form a fixed connecting assembly. The cam squeezes the arc-shaped rack to slide and press the anti-rotation rod, so that the synchronous rod and the locking rod rotate relative to each other. The synchronous gear is provided with a fan-shaped groove for the anti-rotation rod to swing, and the synchronous gear ring is provided with an arc-shaped opening for the anti-rotation rod to swing.

[0010] Preferably, the arc-shaped racks are arranged in multiple groups along the circumferential side of the synchronous gear ring, a rod groove is provided on the circumferential inner wall of the synchronous gear ring, sliding rods inserted into the rod grooves are provided on both sides of the arc-shaped racks, and a spring connected to the sliding rod is provided in the rod groove.

[0011] Preferably, the connecting assembly includes an insertion rod and a driving disk, the driving disk is coaxially arranged with the extension ring and rotatably arranged inside the extension ring, the outer wall of the arc-shaped rack is provided with a socket for inserting the insertion rod, the insertion rod is radially slidably arranged on the extension ring and the outer end passes through a cam, a driving rod is provided at one end of the insertion rod located in the extension ring, and the driving disk is provided with an arc-shaped groove for the driving rod to slide.

[0012] Preferably, an arc-shaped insertion groove is provided on an end surface of the extension ring away from the housing, and a positioning hole for inserting a wrench is provided on the driving disc.

[0013] Preferably, the annular seat is provided with an annular rotation groove for the extension ring to rotate, the inner end of the annular rotation groove is provided with an annular limiting groove, and one end of the extension ring located in the annular groove is provided with an arc-shaped limiting plate that forms a sliding connection with the annular limiting groove.

[0014] Preferably, the sealing guide rod is provided with a piston sleeve at the outer side of the brake pad, and the brake disc is provided with an annular piston rod inserted into the piston sleeve.

[0015] Preferably, a separation groove is provided on the circumferential side of the synchronous gear, and a separation ring which is inserted into the separation groove is provided on the circumferential side of the synchronous gear ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A sealing guide rod for the brake disc to slide is arranged between the slide grooves of the two groups of annular seats, a synchronous rod is rotatably arranged in the sealing guide rod, and a guide shaft slidably connected to a local spiral groove in the brake disc is arranged on the synchronous rod. When the brake disc is driven to move by a hydraulic pump, the synchronous rod will rotate, and the rotation of the synchronous rod will cause the two groups of guide shafts to slide in the local spiral groove in the brake disc at the same time, thereby ensuring that the brake discs on both sides synchronously clamp the two sides of the brake pad;

[0018] Synchronous gears are arranged at both ends of the axial direction of the synchronous rod, and synchronous gear rings are meshed between multiple sets of synchronous gears to ensure that all brake discs clamp the brake pads synchronously;

[0019] By setting up an expansion ring and a locking rod structure, and an anti-rotation rod is set at one end of the locking rod, and an arc-shaped rack for limiting one end of the anti-rotation rod is set on one side of the synchronous gear ring, the locking rod and the synchronous rod can be rotated relative to each other, so that the locking rod is separated from the squeezing of the expansion ring, and all guide shafts can slide individually with the local spiral groove on the brake disc through the annular sleeve. All brake discs are driven by a hydraulic pump to independently press the brake pads. The position of the brake disc can be readjusted after the brake disc is worn out after a cycle of use, and then the locking rod is squeezed to squeeze the expansion ring, so that all brake discs can form synchronous movement again. After the position of the brake disc is adjusted, the two sides of the brake pad can be clamped synchronously to brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram for explaining the present invention as a whole;

[0022] Figure 2 It is a cross-sectional schematic diagram highlighting the inner side of the outer ring column of the present invention;

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0024] Figure 4 It is a structural schematic diagram highlighting the overall brake assembly and the extension ring of the present invention;

[0025] Figure 5 yes Figure 4 A magnified schematic diagram of part B;

[0026] Figure 6 is a cross-sectional schematic diagram highlighting the anti-rotation rod and the arc-shaped rack of the present invention;

[0027] Figure 7is a cross-sectional schematic diagram of the present invention highlighting the drive disk without the extension ring;

[0028] Figure 8 is a cross-sectional schematic diagram of the present invention highlighting the insertion rod;

[0029] Fig. 9 It is a cross-sectional schematic diagram highlighting the hydraulic oil branch channel of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Shell; 2. Spindle assembly; 3. Spindle body; 4. Brake pad; 5. Brake mechanism; 51. Annular seat; 52. Brake disc; 6. Outer ring column; 7. Slideway; 8. Hydraulic oil channel; 9. Local synchronization assembly; 91. Sealing guide rod; 92. Synchronous rod; 93. Guide shaft; 10. Local spiral groove; 11. First sealing ring; 12. Second sealing ring; 13. Overall synchronization assembly; 131. Synchronous gear; 132. Synchronous gear ring; 14. Annular sleeve; 15. Local annular groove; 16. Annular inner groove; 17. Lock rod; 18. Expansion ring; 19. Annular embedded groove; 20. Anti-rotation assembly; 201. Arc rack; 202. Anti-rotation rod; 203. Cam; 21, extension ring; 22, rod groove; 23, slide rod; 24, spring; 25, fan-shaped groove; 26, arc-shaped opening; 27, tooth portion; 28, connecting assembly; 281, drive disk; 282, plug rod; 2821, first rod body; 2822, second rod body; 2823, docking rod; 2824, connecting spring; 29, plug hole; 30, drive rod; 31, arc-shaped groove; 32, radial groove; 33, disk groove; 34, arc-shaped insertion groove; 35, positioning hole; 36, annular rotation groove; 37, arc-shaped limit plate; 38, piston sleeve; 39, piston rod; 40, separation groove; 41, separation ring; 42, hydraulic oil branch channel; 43, third sealing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-9 , the present invention provides a technical solution:

[0034] Reference Figure 1A lathe spindle brake device includes a shell 1 and a mechanical spindle assembly 2 arranged on the shell 1. The spindle assembly 2 includes a spindle body 3, one end of which can be connected to a tool to process a workpiece. The rotation of the spindle assembly 2 and the above structure are both prior arts.

[0035] Reference Figure 1-3 A brake pad 4 is provided on the main shaft body 3, and a brake mechanism 5 for braking the brake pad 4 is provided on the outer shell 1. An outer ring column 6 is fixed to one end of the outer shell 1 located in the axial direction of the main shaft body 3, and the outer ring column 6 is opened at one end away from the outer shell 1. The brake mechanism 5 includes an annular seat 51 arranged in the outer ring column 6, and a plurality of groups of brake discs 52 are evenly arranged along the circumference of the annular seat 51. The annular seat 51 and the annular column are coaxially arranged with the main shaft body 3. The annular seat 51 is symmetrically arranged on both sides of the brake pad 4. The end surfaces of the two groups of annular seats 51 on opposite sides are provided with a slide groove 7 for the brake disc 52 to slide along the axial direction of the main shaft. A hydraulic oil channel 8 is provided on the annular seat 51 to enter each group of slide grooves 7. Hydraulic oil is injected into the slide groove 7 by a hydraulic pump to drive the brake discs 52 on both sides to move toward the side close to each other, thereby braking the brake pad 4, wherein a hydraulic oil branch channel 42 (see FIG. 4 ) is connected between each group of slide grooves. Fig. 9 ).

[0036] Reference Figure 2 , 3 In order to ensure that the brake discs 52 on both sides can synchronously press the brake pads 4, each group of slide grooves 7 on the annular seats 51 on both sides are arranged one by one, and a local synchronization component 9 is connected between the two groups of slide grooves 7 corresponding to each other, which drives the brake discs 52 on both sides to synchronously clamp the brake pads 4. The local synchronization component 9 includes a sealing guide rod 91, a synchronization rod 92 and a guide shaft 93. The sealing guide rod 91 is arranged parallel to the main shaft body 3 and fixed between the two groups of slide grooves 7. The synchronization rod 92 is rotatably arranged inside the sealing guide rod 91. One end of the guide shaft 93 is fixed on the synchronization rod 92, and the other end passes through the sealing guide rod 91 and extends to the inside of the brake disc 52. The brake discs 52 corresponding to the two sides are sleeved on the sealing guide rod 91 through the sleeve hole and form a sliding connection. The inner wall of the sleeve hole is provided with a local spiral groove 1 for the guide shaft 93 to slide. 0, a local annular groove 15 for the guide shaft 93 to rotate is provided on the outer wall of the sealing guide rod 91. In order to ensure the sealing performance of the process in which the hydraulic pump pumps hydraulic oil to push the brake disc 52, a first sealing ring 11 is provided on the inner wall circumference of the slide groove 7, and a second sealing ring 12 is provided at the contact position between the sealing guide rod 91 and the brake disc 52. The second sealing ring 12 is provided in the sleeve hole and is located on both sides of the local spiral groove 10. The second sealing ring 12 does not contact the local spiral groove 10, ensuring that the process of the coordinated movement of the local spiral groove 10 and the guide shaft 93 will not affect the sealing performance. It should be noted that: the distance from the brake disc 52 to the contact with the brake pad 4 is less than the distance between the two sets of second sealing rings 12. The sealing guide rod 91 covers the synchronization rod 92 inside, and will not affect the sealing performance of the hydraulically driven brake disc 52 during movement;

[0037] Reference Figure 3 , 4 , and also includes an overall synchronization component 13, the axial ends of the synchronization rod 92 respectively penetrate the annular seat 51, the overall synchronization component 13 includes a synchronization ring 132 and a synchronization gear 131, the synchronization gear 131 is symmetrically arranged at the axial ends of the synchronization rod 92, and the multiple groups of synchronization gears 131 arranged on the same side are distributed on the circumferential side of the synchronization ring 132 and meshed with the synchronization ring 132. Through the meshing of the synchronization ring 132 and the synchronization gear 131, and the cooperation of the guide shaft 93 on the synchronization rod 92 and the local spiral groove 10 in the brake disc 52, all the brake discs 52 can synchronously press the end surfaces of the brake pads 4 on both sides, avoiding the generation of radial force during braking to ensure stability during braking.

[0038] Reference Figure 3 , 4 In order to quickly adjust the positions of all brake discs 52 after the brake mechanism 5 is worn out after a cycle of use, and to ensure that the distances from all brake discs 52 to the brake pads 4 are the same, an annular sleeve 14 is rotatably provided on the synchronization rod 92, and the guide shaft 93 is fixed on the outer wall of the annular sleeve 14. A rotation groove for the synchronization rod 92 to rotate is provided inside the sealing guide rod 91, and an annular inner groove 16 for the annular sleeve 14 to rotate is provided on the inner wall of the rotation groove. When it is necessary to adjust the position of the brake disc 52, the annular sleeve 14 and the synchronization rod 92 are relatively fixed, so that all brake discs 52 are not restricted by the guide shaft 93 and the synchronization rod 92, and then all brake discs 52 are driven by hydraulic driving force to independently press the brake pads 4. At this time, the distances between all brake discs 52 and the brake pads 4 are the same again, and then the annular sleeve 14 and the synchronization rod 92 are re-fixed by the fixing assembly to form synchronous movement again, wherein the fixing assembly includes a locking rod 17 threadedly connected to the synchronization rod 92, and the synchronization rod 92 is located at the annular sleeve 14 An expansion ring 18 is connected, and the outer wall of the expansion ring 18 is arranged to fit the inner wall of the annular sleeve 14. The outer wall of the locking rod 17 is provided with an annular embedding groove 19 for the inner ring wall of the expansion ring 18 to be embedded. When the expansion ring 18 is embedded in the annular embedding groove 19, the locking rod 17 does not squeeze the expansion ring 18 at this time. The movement of the brake disc 52 can drive the annular sleeve 14 to rotate independently through the guide shaft 93. After the locking rod 17 rotates relative to the synchronization rod 92 and axially displaces, the expansion ring 18 breaks away from the limiting groove and is squeezed to expand and deform and squeeze the annular sleeve 14, thereby realizing the integral fixation of the synchronization rod 92 and the annular sleeve 14. When the brake disc 52 on one side moves to drive the guide shaft 93 to slide in the local spiral groove 10, the brake disc 52 on the opposite side will also move synchronously and drive the synchronization rod 92 to rotate together. The local spiral grooves 10 on the two sets of brake discs 52 arranged oppositely are arranged in the same direction. When the synchronization rod 92 rotates, the brake discs 52 on both sides will move toward or away from each other.

[0039] Reference Figure 3-6In order to allow the lock rod 17 and the synchronization rod 92 to rotate relative to each other, an anti-rotation assembly 20 for limiting the lock rod 17 from rotating with the synchronization rod 92 is provided on the synchronization ring 132 on the side away from the housing 1, and an extension ring 21 is rotatably provided on the annular seat 51 on the side away from the housing 1. The extension ring 21 is arranged on the end surface of the annular seat 51 on the side away from the housing 1 and is coaxially arranged with the synchronization ring 132. The anti-rotation assembly 20 specifically includes an arc-shaped rack 201 that slides radially along the synchronization ring 132, an anti-rotation rod 202, and a cam 203 arranged on the outer wall of the extension ring 21. The anti-rotation rod 202 is fixed to one end of the axial direction of the lock rod 17 and extends radially along the lock rod 17. The end of the anti-rotation rod 202 away from the lock rod 17 passes through the synchronous gear 131 and the synchronous gear ring 132 and faces the arc-shaped rack 201, wherein the arc-shaped rack 201 is provided with multiple groups along the circumferential side of the synchronous gear ring 132, and the circumferential inner wall of the synchronous gear ring 132 is provided with a rod groove 22. Slide rods 23 inserted into the rod groove 22 are provided on both sides of the arc-shaped rack 201. A spring 24 connected to the slide rod 23 is provided in the rod groove 22. In the initial state of the spring 24, the arc-shaped rack 201 is not in contact with the lock rod 17. The anti-rotation rod 202 is in contact with the synchronous gear 131, and a fan-shaped groove 25 is provided on the synchronous gear 131 for the anti-rotation rod 202 to swing. The synchronous gear ring 132 is provided with an arc-shaped opening 26 for the anti-rotation rod 202 to swing. When one end of the anti-rotation rod 202 is not pressed by the arc-shaped rack 201, the synchronous rod 92 rotates synchronously with the lock rod 17 and drives the anti-rotation rod 202 to swing. The arrangement of the fan-shaped groove 25 and the arc-shaped opening 26 can avoid interference with the anti-rotation rod 202 during rotation. When it is necessary to make the lock rod 17 and the synchronous rod 92 form relative rotation, the arc-shaped rack 201 can be driven to move and align with the anti-rotation rod 202. 02 are offset against each other. When the brake disc 52 moves and drives the synchronization rod 92 to rotate through the guide shaft 93, the synchronization rod 92 will drive the synchronization gear 131 to rotate, thereby causing the synchronization ring 132 to rotate. Since the synchronization gear 131 and the synchronization ring 132 rotate in opposite directions, and one end of the anti-rotation rod 202 is pressed by the arc-shaped rack 201, the locking rod 17 and the synchronization rod 92 rotate relative to each other. Under the threaded connection cooperation between the locking rod 17 and the synchronization rod 92 (the threaded connection position of the locking rod 17 and the synchronization rod 92 can be set at a suitable position), the locking rod 17 will move axially.

[0040] Reference Figure 4-9In order to quickly drive all the arc-shaped racks 201 to fix one end of the anti-rotation rod 202 and to keep the anti-rotation rod 202 fixed when the synchronous gear 131 rotates, the anti-rotation rod 202 is provided with a tooth portion 27 at one end facing the arc-shaped rack 201, and the extension ring 21 is provided with a driving cam 203. The protrusion abuts against the outer wall of the arc-shaped rack 201 to form a fixed connection assembly 28. The cam 203 squeezes the arc-shaped rack 201 to slide and press the anti-rotation rod 202, wherein the connection assembly 28 includes an insertion rod 282 and a driving disk 281, and the driving disk 281 is coaxially arranged with the extension ring 21 and rotatably arranged on the extension ring 21. Inside, an insertion hole 29 for inserting the insertion rod 282 is provided on the outer wall of the arc-shaped rack 201. The insertion rod 282 is radially slidably arranged on the extension ring 21 and the outer end thereof passes through the cam 203. A driving rod 30 is provided at one end of the insertion rod 282 located in the extension ring 21. An arc-shaped groove 31 for sliding the driving rod 30 is provided on the driving disk 281. By rotating the driving disk 281, the driving rod 30 can be driven to slide in the arc-shaped groove 31 to the other end, thereby pushing the insertion rod 282 to the outer end of the cam 203. Continuing to rotate the driving disk 281 will drive the entire extension ring 21 to rotate and cause the cam 203 on the extension ring 21 to squeeze the arc-shaped rack 201. The outer wall of the rack 201 is extended until the insertion rod 282 is aligned with the insertion hole 29. At this time, the insertion rod 282 will be automatically inserted into the insertion hole 29. The extension ring 21 is provided with a radial groove 32 for the insertion rod 282 to slide radially, and a driving rod 30 groove 22 for the driving rod 30 to slide. The extension ring 21 is also provided with a disk groove 33 for the driving disk 281 to rotate. The driving rod 30 groove 22 communicates the radial groove 32 and the disk groove 33. The driving rod 30 extends to the arc groove 31 of the driving disk 281 through the driving rod 30 groove 22. In addition, the insertion rod 282 is composed of a first rod body 2821 and a second rod body 2822. The first rod body A docking rod 2823 is provided at one end of 2821, and a rod groove for inserting the docking rod 2823 is provided on the second rod body 2822, and a connecting spring 2824 is provided in the rod groove. When the first rod body 2821 is aligned with the insertion hole 29, the connecting spring 2824 pushes the first rod body 2821 into the insertion hole 29 to form a docking. At the same time, the cam 203 pushes the arc-shaped rack 201 and makes the arc-shaped inner side of the arc-shaped rack 201 press the tooth portion 27 of the anti-rotation rod 202, so that the extension ring 21 is fixed to the arc-shaped rack 201. When the arc-shaped rack 201 rotates following the synchronous gear ring 132, the extension ring 21 will rotate accordingly.

[0041] See also Figure 4 , 7 , the extension ring 21 is away from the housing 1 (see Figure 1 ) has an arc-shaped insertion groove 34 on one side end face, and a positioning hole 35 for inserting a wrench is provided on the driving disk 281. When it is necessary to rotate the driving disk 281, an external tool can be used to insert the wrench into the positioning hole 35 of the driving disk 281 through the arc-shaped insertion groove 34, and drive the driving disk 281 to rotate.

[0042] See also Figure 4 , 7 The annular seat 51 is provided with an annular groove 36 for the extension ring 21 to rotate, wherein the extension ring 21 and the annular groove 36 have an interference fit, and a certain force needs to be applied to rotate the extension ring 21. An annular limiting groove is provided at the inner end of the annular groove 36, and an arc-shaped limiting plate 37 is provided at one end of the extension ring 21 located in the annular groove to form a sliding connection with the annular limiting groove. When the extension ring 21 is rotated, when the arc-shaped limiting plate 37 rotates from one end of the arc-shaped limiting groove to the other end, the cam 203 will abut against the arc-shaped rack 201, and the insertion rod 282 is aligned with the insertion hole 29.

[0043] See also Figure 3 , 4 A sealing guide rod 91 is provided with a piston sleeve 38 at the outer side of the brake pad 4, and an annular piston rod 39 is inserted into the piston sleeve 38 on the brake disc 52. Through the cooperation of the piston sleeve 38 and the piston rod 39, the liquid pressure is released after the brake disc 52 brakes the brake pad 4. Under the action of the pressure in the piston sleeve 38, the piston rod 39 will be pushed to slide back, driving the brake disc 52 to reset. It should be noted that the sliding of the piston rod 39 in the piston sleeve 38 will not interfere with the contact of the brake disc 52 with the brake pad 4 after sliding. It should be noted that the piston sleeve 38 is fixed on the sealing guide rod 91, and annular piston grooves for the piston rod 39 (annular arrangement) to be inserted are provided at both ends, and a third sealing ring 43 is provided in the annular piston groove.

[0044] See also Figure 4 A separation groove 40 is provided on the circumferential side of the synchronous gear 131 , and a separation ring 41 is provided on the circumferential side of the synchronous gear ring 132 to be inserted into the separation groove 40 . When the synchronous gear 131 rotates to drive the synchronous gear ring 132 to rotate, the synchronous gear ring 132 will not separate from the synchronous gear 131 .

[0045] See also Figure 1-9 The use process of the device is as follows: when braking is needed, hydraulic oil is pumped into the slide groove 7 to drive the brake disc 52 to slide toward the side of the brake pad 4. The movement of the brake disc 52 will drive the synchronization rod 92 to rotate through the cooperation of the local spiral groove 10 and the guide shaft 93. Under the action of the synchronization rod 92, the two brake discs 52 on the same group of sealing guide rods 91 will move toward the side of the brake disc 52 synchronously. In addition, since the rotation of the synchronization rod 92 will drive the synchronization gear 131 to rotate, the synchronization gear 131 will rotate all the synchronization rods 92 at the same time through the engagement of the synchronization gear ring 132, so that all the brake discs 52 move toward the side of the brake pad 4 synchronously, so that all the brake discs 52 are synchronously pressed against both sides of the brake pad 4, and a stable braking effect is achieved.

[0046] After the braking is completed and the hydraulic pressure is released, the piston rod 39 will be pushed back by the pressure in the piston sleeve 38, thereby driving all the brake discs 52 to reset.

[0047] When the brake mechanism 5 is used for a cycle and the multiple sets of brake discs 52 are unevenly worn, all brake discs 52 need to be adjusted to ensure that all brake discs 52 can synchronously press the brake pads 4. The position adjustment method of the brake disc 52 is: first insert an external wrench into the positioning hole 35 of the drive disc 281 through the arc-shaped insertion groove 34, and slide the wrench along one end of the arc-shaped insertion groove 34 to drive the drive disc 281 to rotate. The rotation of the drive disc 281 will cause the drive rod 30 on the insertion rod 282 to slide from one end of the arc-shaped groove 31 to the other end (the two ends of the arc-shaped groove 31 are at different distances from the center of the drive disc 281). At this time, the outer end of the insertion rod 282 is pushed to the outer end of the cam 203 through the drive rod 30. , the driving plate 281 continues to rotate until the cam 203 squeezes the arc-shaped rack 201 and the outer end of the insertion rod 282 is inserted into the insertion hole 29 of the arc-shaped rack 201, so that the arc-shaped rack 201 is fixed to the extension ring 21. At this time, the hydraulic oil is pumped into the slide groove 7 again by the hydraulic pump and the brake disc 52 is driven to move toward the side of the brake pad 4 until it contacts the brake pad 4. The brake disc 52 moves and drives the synchronous rod 92 to rotate through the guide shaft 93 and the annular sleeve 14. The rotation of the synchronous rod 92 will drive the synchronous gear 131 and the synchronous gear 131 to rotate with the synchronous gear 131. The gear ring 132 forms a reverse rotation. Due to the positioning of the outer end of the anti-rotation rod 202 by the arc-shaped rack 201, the lock rod 17 will rotate in the same direction as the synchronization rod 92, so that the lock rod 17 moves axially in the synchronization rod 92, thereby releasing the compression of the annular sleeve 14. Under the action of the hydraulic pressure, the brake disc 52 that has not contacted the brake pad 4 due to excessive wear will continue to move until it contacts the brake pad 4, and drive the corresponding guide shaft 93 to move a certain distance in the local spiral groove 10, and then the synchronization gear ring 132 is manually reversed. (To facilitate manual rotation, a hole for docking a wrench tool can be provided on the side wall of the synchronizer gear ring 132), the synchronizer gear ring 132 will drive the synchronizer gear 131 to rotate, thereby driving the synchronizer rod 92 to rotate, and at this time the synchronizer rod 92 and the locking rod 17 will rotate in the opposite direction (at this time, the directions of the synchronizer rod 92 and the locking rod 17 are opposite to the aforementioned directions), thereby making the locking rod 17 move radially along the synchronizer rod 92 again and making the expansion ring 18 press the annular sleeve 14 again, so as to realize the integrated fixation of the synchronizer rod 92 and the locking rod 17. Then, the drive plate 281 is reversed by a wrench. The reversed drive plate 281 will drive the insertion rod 282 to disengage from the insertion hole 29 on the arcuate rack 201 through the cooperation with the drive rod 30. Continuing to reverse the drive plate 281 will cause the cam 203 to disengage from the abutment with the arcuate rack 201. The arcuate rack 201 moves radially inwardly along the synchronous gear ring 132 under the action of the spring 24 and disengages from the positioning of the anti-rotation rod 202. At this time, the hydraulic pressure is released, and the brake disc 52 will be driven to slide back under the action of the piston sleeve 38 and the piston rod 39, and all the brake discs 52 are reset synchronously through the cooperation of the local synchronous component 9 and the overall synchronous component 13, thereby completing the position adjustment of the brake disc 52. When the brake pad 4 is braked next time, all the brake discs 52 can brake both sides of the brake pad 4 synchronously.

[0048] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lathe spindle brake device, comprising a housing (1), a mechanical spindle assembly (2) arranged on the housing (1), the spindle assembly (2) comprising a spindle body (3), characterized in that: The spindle body (3) is provided with a brake pad (4), the housing (1) is provided with a brake mechanism (5) for braking the brake pad (4), the housing (1) is provided with an outer ring column (6) at one end of the spindle body (3) in the axial direction, the brake mechanism (5) comprises an annular seat (51) arranged in the outer ring column (6), and a plurality of groups of brake discs (52) evenly arranged along the circumference of the annular seat (51), the annular column and the spindle body (3) are coaxially arranged, the annular seat (51) is symmetrically arranged on both sides of the brake pad (4), the end surfaces of the two groups of annular seats (51) on one side opposite to each other are provided with a slide groove (7) for the brake disc (52) to slide along the axial direction of the spindle, the annular seat (51) is provided with a hydraulic oil channel (8) leading to each group of slide grooves (7), each group of slide grooves (7) on the annular seats (51) on both sides are arranged one by one opposite to each other, and the two correspondingly arranged ones at each place are provided with a hydraulic oil channel (8) leading to each group of slide grooves (7), and the two correspondingly arranged ones at each place are provided with a hydraulic oil channel (8) leading to each group of slide grooves (7). A local synchronization component (9) is connected between the two groups of slide grooves (7) to drive the brake discs (52) on both sides to synchronously clamp the brake pads (4). The local synchronization component (9) includes a sealing guide rod (91), a synchronization rod (92) and a guide shaft (93). The sealing guide rod (91) is arranged in parallel with the main shaft body (3) and fixed between the two groups of slide grooves (7). The synchronization rod (92) is rotatably arranged inside the sealing guide rod (91). One end of the guide shaft (93) is fixed on the synchronization rod (92) and the other end passes through the sealing guide rod (91) and extends to the inside of the brake disc (52). The brake discs (52) arranged on the two sides are sleeved on the sealing guide rod (91) through sleeve holes to form a sliding connection. The inner wall of the sleeve hole is provided with a local spiral groove (10) for the guide shaft (93) to slide. The outer wall of the sealing guide rod (91) is provided with a local annular groove (15) for the guide shaft (93) to rotate. The invention also comprises an integral synchronization component (13), wherein the two axial ends of the synchronization rod (92) respectively penetrate the annular seat (51), and the integral synchronization component (13) comprises a synchronization ring gear (132) and a synchronization gear (131), wherein the synchronization gear (131) is symmetrically arranged at the two axial ends of the synchronization rod (92), and a plurality of groups of synchronization gears (131) arranged on the same side are distributed around the synchronization ring gear (132) and meshedly connected with the synchronization ring gear (132).

2. A lathe spindle brake device according to claim 1, characterized in that: An annular sleeve (14) is rotatably provided on the synchronization rod (92), the guide shaft (93) is fixed on the outer wall of the annular sleeve (14), a rotation groove for the synchronization rod (92) to rotate is provided inside the sealing guide rod (91), an annular inner groove (16) for the annular sleeve (14) to rotate is provided on the inner wall of the rotation groove, and a fixing component for fixing the annular sleeve (14) to the synchronization rod (92) is provided inside the synchronization rod (92).

3. A lathe spindle brake device according to claim 2, characterized in that: The fixing assembly comprises a locking rod (17) threadedly connected to a synchronization rod (92); the synchronization rod (92) is connected to an expansion ring (18) at an annular sleeve (14); the outer wall of the expansion ring (18) is arranged to fit the inner wall of the annular sleeve (14); the outer wall of the locking rod (17) is provided with an annular embedding groove (19) for embedding the inner ring wall of the expansion ring (18); an anti-rotation assembly (20) for limiting the locking rod (17) from rotating with the synchronization rod (92) is provided on the synchronization gear ring (132) on the side away from the housing (1); the synchronization rod (92) and the locking rod (17) rotate relative to each other so that the inner ring wall of the expansion ring (18) is embedded in or out of the annular embedding groove (19).

4. A lathe spindle brake device according to claim 3, characterized in that: An extension ring (21) is rotatably provided on a ring seat (51) at a side away from the housing (1). The extension ring (21) is arranged on an end surface of the ring seat (51) at a side away from the housing (1) and is coaxially arranged with the synchronous gear ring (132). The anti-rotation assembly (20) comprises an arc-shaped rack (201) that slides radially along the synchronous gear ring (132), an anti-rotation rod (202), and a cam (203) arranged on the outer wall of the extension ring (21). The anti-rotation rod (202) is fixed to one axial end of the locking rod (17). The other end of the anti-rotation rod (202) penetrates the synchronous gear (131) and the synchronous gear ring (132) and faces the arc-shaped rack (201). 01), a tooth portion (27) is provided at one end of the anti-rotation rod (202) facing the arc-shaped rack (201), the extension ring (21) is provided with a driving cam (203), the protruding portion of which abuts against the outer wall of the arc-shaped rack (201) to form a fixed connection assembly (28), the cam (203) squeezes the arc-shaped rack (201) to slide and press the anti-rotation rod (202), so that the synchronization rod (92) and the locking rod (17) form relative rotation, the synchronization gear (131) is provided with a fan-shaped groove (25) for the anti-rotation rod (202) to swing, and the synchronization gear ring (132) is provided with an arc-shaped opening (26) for the anti-rotation rod (202) to swing.

5. The lathe spindle brake device according to claim 4, characterized in that: A plurality of arc-shaped racks (201) are arranged along the circumference of the synchronous gear ring (132); a rod groove (22) is provided on the circumferential inner wall of the synchronous gear ring (132); sliding rods (23) inserted into the rod grooves (22) are provided on both sides of the arc-shaped rack (201); and a spring (24) connected to the sliding rod (23) is provided in the rod groove (22).

6. The lathe spindle brake device according to claim 4, characterized in that: The connecting assembly (28) comprises an insert rod (282) and a driving disk (281); the driving disk (281) is coaxially arranged with the extension ring (21) and rotatably arranged inside the extension ring (21); an insertion hole (29) for inserting the insert rod (282) is provided on the outer wall of the arc-shaped rack (201); the insert rod (282) is radially slidably arranged on the extension ring (21) and the outer end thereof passes through the cam (203); a driving rod (30) is provided at one end of the insert rod (282) located inside the extension ring (21); and an arc-shaped groove (31) for sliding the driving rod (30) is provided on the driving disk (281).

7. The lathe spindle brake device according to claim 6, characterized in that: An arc-shaped insertion groove (34) is provided on the end surface of the extension ring (21) away from the housing (1), and a positioning hole (35) for inserting a wrench is provided on the drive disc (281).

8. The lathe spindle brake device according to claim 6, characterized in that: The annular seat (51) is provided with an annular rotation groove (36) for the extension ring (21) to rotate, the inner end of the annular rotation groove (36) is provided with an annular limiting groove, and one end of the extension ring (21) located in the annular rotation groove (36) is provided with an arc-shaped limiting plate (37) which is slidably connected to the annular limiting groove.

9. The lathe spindle brake device according to claim 1, characterized in that: The sealing guide rod (91) is provided with a piston sleeve (38) at a position outside the brake pad (4), and the brake disc (52) is provided with an annular piston rod (39) inserted into the piston sleeve (38).

10. The lathe spindle brake device according to claim 1, characterized in that: A separation groove (40) is provided on the circumferential side of the synchronous gear (131), and a separation ring (41) which is inserted into the separation groove (40) is provided on the circumferential side of the synchronous gear ring (132).

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