Roller lead screw pair for gantry numerical control machine tool

Abstract

The invention relates to the technical field of machine tool machining, in particular to a roller lead screw pair for a gantry numerical control machine tool, which comprises a bottom plate, two vertical plates are fixedly connected to the end surface of the bottom plate, a lead screw body is rotatably connected to the sides, close to each other, of the two vertical plates, a roller sliding block is mounted on the arc surface of the lead screw body, and the roller lead screw pair further comprises a lubricating mechanism and a driving mechanism, the lubricating mechanism is used for lubricating the roller sliding block and comprises a rectangular hole and a concave hole which are formed in the end face of the bottom plate, and the bottom face of the bottom plate is fixedly connected with a first L-shaped rod and a first L-shaped barrel. Through the arrangement of a convex block, a first frustum, a rack, a first gear and a storage bottle, when a roller sliding block moves, the convex block is extruded, so that a lead screw body is supported, through extrusion of the convex block, the first frustum, the rack and the first gear are linked, and the effect of adjusting the angle of the storage bottle is achieved; therefore, the lubricating liquid in the storage bottle flows out.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool processing, and in particular relates to a roller screw pair for a gantry numerical control machine tool. Background Art

[0002] The roller screw pair is an important mechanical transmission component. The roller screw pair consists of main components such as the screw, nut, and roller. Its working principle is to drive the nut to move linearly along the axial direction of the screw through the rotation of the screw. In this process, the roller rolls between the screw and the nut, which plays a role in transmitting power and reducing friction. The roller screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, roller screws are widely used in various industrial equipment and precision instruments.

[0003] In the Chinese patent with the publication number CN114161199A, a roller screw pair for gantry CNC machine tools is mentioned. The specification discloses that when the roller transmission device moves to the middle of the screw, it will press the supporting device below, prompting the supporting device to press down the belt 1 below, so that the belt 1 drives the piston rods at both ends to extend into the cylinder body, prompting the gas in the cylinder body to be discharged from the gas delivery pipe connected to the side into the gas storage tank under negative pressure. After the gas collected in the gas storage tank increases to a certain amount, it is discharged from the gas outlet 2 and enters the connected rubber airbag, prompting the rubber airbag to be inflated, so that the top of the rubber airbag presses against the two ends of the bottom of the screw, thereby supporting the screw as a whole, increasing the overall stability of the screw, and avoiding the phenomenon of the middle part falling due to the excessive length of the screw.

[0004] However, in the above application, when the roller transmission device moves to the middle of the screw, it will press the supporting device below. At this time, the supporting device has played the role of supporting the screw, and there is no need to support it through the airbag. In addition, the airbag supports the screw. On the one hand, the airbag is made of elastic material and cannot play a role in support. On the other hand, the screw is rotating and will affect the airbag when it comes into contact with the airbag. Summary of the invention

[0005] The object of the present invention is to provide a roller screw pair for a gantry CNC machine tool, so as to solve the problem in the prior art that the existing roller screw pair is not convenient for timely lubrication.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A roller screw pair for a gantry CNC machine tool comprises a bottom plate, the end surface of the bottom plate is fixedly connected to two vertical plates, the sides of the two vertical plates close to each other are rotatably connected to a screw body, the arc surface of the screw body is equipped with a roller sliding block, and further comprises:

[0008] The lubricating mechanism is used to lubricate the roller sliding block, and the lubricating mechanism includes a rectangular hole and a concave hole opened on the end surface of the bottom plate, the bottom surface of the bottom plate is fixedly connected to a first L-shaped rod and a first L-shaped tube, the surface of the first L-shaped rod is fixedly connected to a circular ring, the inner wall of the circular ring is slidably connected to a sliding rod, two ends of the sliding rod are respectively fixedly connected to a convex block and a first cone, the inner wall of the first L-shaped tube is slidably connected to a first cylinder, one end of the first cylinder is fixedly connected to a second cone, the arc surface of the first cylinder is fixedly connected to two first connecting rods, one end of the two first connecting rods away from the first cylinder is fixedly connected to the first rectangular plate, a third cone is provided on one side of the first rectangular plate, a rack is provided above the third cone, the tooth surface of the rack is meshed with a first gear, a storage bottle is provided on one side of the first gear, the arc surface of the storage bottle is connected to a conduit, and the end of the conduit away from the storage bottle is connected to the roller sliding block;

[0009] An auxiliary mechanism is used to assist the lubrication mechanism during lubrication, and the auxiliary mechanism includes a second gear meshing with the first gear, a brush roller is fixedly connected to one side of the second gear, and the end of the brush roller away from the second gear is rotatably connected to a fixed plate, and the fixed plate is fixedly connected to the surface of one of the vertical plates.

[0010] Preferably: a second L-shaped rod is fixedly connected to the bottom surface of the bottom plate, one end of the second L-shaped rod is fixedly connected to a first round tube, the inner wall of the first round tube is slidably connected to a round rod, the rack is fixedly connected to the top of the round rod, a fixed block is fixedly connected to the surface of one of the vertical plates, a rotating rod is rotatably connected to the surface of the fixed block, the first gear is fixedly connected to the arc surface of the rotating rod, a groove is provided on the side of the first gear away from the fixed block, and the storage bottle is slidably connected inside the groove.

[0011] Preferably: the arc surface of the sliding rod is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the circular ring and the first cone; the arc surface of the first cylinder is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the first L-shaped tube and the first cylinder; the arc surface of the round rod is sleeved with a third spring, and the two ends of the third spring are respectively fixedly connected to the first circular tube and the rack.

[0012] Preferably, a connection block is fixedly connected to the surface of one of the vertical plates, a circular plate is fixedly connected to a side of the connection block close to the first gear, and a C-shaped tube is fixedly connected to a side of the circular plate away from the connection block.

[0013] Preferably, an anti-skid pad is fixedly connected to the inner wall of the groove, and the anti-skid pad is a rubber pad.

[0014] Preferably: the auxiliary mechanism also includes a second L-shaped cylinder and a third L-shaped rod fixedly connected to the bottom surface of the bottom plate, the inner wall of the second L-shaped cylinder is slidably connected to a second cylinder, the end of the second cylinder close to the first L-shaped cylinder is fixedly connected to a fourth cone, the arc surface of the second cylinder is fixedly connected to two second connecting rods, the ends of the two second connecting rods away from the second cylinder are fixedly connected to a second rectangular plate, one end of the third L-shaped rod is fixedly connected to a second circular tube, the inner wall of the second circular tube is slidably connected to a fourth L-shaped rod, the bottom end of the fourth L-shaped rod is fixedly connected to a fifth cone, the arc surface of the fourth L-shaped rod is fixedly connected to an arc plate, and the arc surface of the arc plate is connected to a water pipe.

[0015] Preferably, the arc surface of the second cylinder is sleeved with a fourth spring, and two ends of the fourth spring are fixedly connected to the second cylinder and the second L-shaped tube respectively.

[0016] Preferably, the arc surface of the fourth L-shaped rod is sleeved with a fifth spring, and two ends of the fifth spring are fixedly connected to the fifth frustum and the second circular tube respectively.

[0017] Preferably, a sponge pad is fixedly connected to the inner arc surface of the arc plate, and the sponge pad is located directly below the brush roller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a protrusion, a first cone, a rack, a first gear and a storage bottle. When the roller sliding block moves, it squeezes the protrusion to form a support for the lead screw body. The first cone, the rack and the first gear are linked by the squeezing of the protrusion to achieve the effect of adjusting the angle of the storage bottle, so that the lubricating liquid inside the storage bottle flows out to lubricate the roller sliding block. Under the elastic force of the third spring, the first spring and the second spring, the effect of repeated lubrication can be achieved, that is, as long as the roller sliding block moves to the middle position, the lubrication effect can be achieved, and the operation is more convenient without manual intervention.

[0020] 2. The present invention arranges a first gear, a second gear, an arc plate and a brush roller. With the help of the transmission cooperation of the first gear and the second gear, the brush roller can be rotated. The bristles on the brush roller can absorb the lubricating liquid remaining on the screw body, thereby avoiding the lubricating liquid remaining on the screw body from dripping.

[0021] 3. The present invention arranges a fourth cone, a fifth cone, an arc plate and a sponge pad, and uses the first cone to squeeze the fourth cone to drive the fifth cone to squeeze, so as to adjust the height of the arc plate. The sponge pad is attached to the surface of the brush roller to absorb the lubricating liquid on the bristles of the brush roller, thereby collecting the lubricating liquid and avoiding lubrication and waste as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 One of the three-dimensional diagrams of the present invention;

[0023] Figure 2 This is the second stereogram of the present invention;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of the front view structure of

[0025] Figure 4 For the present invention Figure 1 Schematic diagram of the partial split structure;

[0026] Figure 5 For the present invention Figure 4 Another perspective structural diagram of;

[0027] Figure 6 For the present invention Figure 1 Schematic diagram of some structures;

[0028] Figure 7 For the present invention Figure 6 Another perspective structural diagram of;

[0029] Figure 8 For the present invention Figure 6 Schematic diagram of the partial split structure;

[0030] Fig. 9 It is a schematic diagram of the disassembled structure of the C-shaped tube and the catheter of the present invention.

[0031] In the figure: 1, bottom plate; 101, vertical plate; 102, lead screw body; 103, roller sliding block; 104, concave hole; 2, lubrication mechanism; 201, rectangular hole; 202, first L-shaped rod; 203, circular ring; 204, sliding rod; 205, protrusion; 206, first cone; 2061, first spring; 207, second cone; 208, first cylinder; 209, first L-shaped tube; 210, second spring; 211, first connecting rod; 212, first rectangular plate; 213, second L-shaped rod; 214, first circular tube; 215, circular rod; 2151, third cone; 216, rack; 217, third spring; 218, fixing block; 219, Rotating rod; 220, first gear; 221, groove; 222, anti-skid pad; 223, storage bottle; 224, conduit; 225, connecting block; 226, circular plate; 227, C-shaped tube; 3, auxiliary mechanism; 301, second L-shaped tube; 302, second cylinder; 303, fourth cone; 304, second connecting rod; 305, second rectangular plate; 306, third L-shaped rod; 307, second circular tube; 308, fourth L-shaped rod; 309, fourth spring; 310, fifth cone; 3101, fifth spring; 311, arc plate; 31101, water pipe; 312, sponge pad; 313, second gear; 314, brush roller; 315, fixing plate. 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] Reference Figure 1-Figure 9 As shown, the present invention provides a roller screw pair for a gantry CNC machine tool, comprising a base plate 1, two vertical plates 101 are fixedly connected to the end surface of the base plate 1, a screw body 102 is rotatably connected to the side of the two vertical plates 101 close to each other, and a roller sliding block 103 is installed on the arc surface of the screw body 102, and also includes:

[0034] In this embodiment, the screw body 102 can be driven by an external motor, and a plurality of rollers are installed inside the roller sliding block 103, which match the threaded grooves on the screw body 102 to reduce friction during movement. The screw body 102 and the roller sliding block 103 are existing equipment and will not be described in detail here.

[0035] In a further embodiment, referring to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8and Fig. 9 As shown, the lubrication mechanism 2 is used to lubricate the roller sliding block 103. The lubrication mechanism 2 includes a rectangular hole 201 and a concave hole 104 opened on the end surface of the bottom plate 1. The bottom surface of the bottom plate 1 is fixedly connected to a first L-shaped rod 202 and a first L-shaped cylinder 209. The surface of the first L-shaped rod 202 is fixedly connected to a ring 203. The inner wall of the ring 203 is slidably connected to a sliding rod 204. The two ends of the sliding rod 204 are respectively fixedly connected to a convex block 205 and a first cone 206. The inner wall of the first L-shaped cylinder 209 is slidably connected to a first cylinder 208. One end of the first cylinder 208 is fixedly connected to a second Cone 207, the arc surface of the first cylinder 208 is fixedly connected with two first connecting rods 211, one end of the two first connecting rods 211 away from the first cylinder 208 is fixedly connected with the first rectangular plate 212, a third cone 2151 is provided on one side of the first rectangular plate 212, a rack 216 is provided above the third cone 2151, the tooth surface of the rack 216 is meshed with a first gear 220, a storage bottle 223 is provided on one side of the first gear 220, the arc surface of the storage bottle 223 is connected with a conduit 224, and the end of the conduit 224 away from the storage bottle 223 is connected with the roller sliding block 103;

[0036] In this embodiment, the storage bottle 223 is filled with a proper amount of lubricating liquid and does not need to be filled up. When the storage bottle 223 is installed on the first gear 220, the connection between the conduit 224 and the storage bottle 223 is located at the top, thereby ensuring that the lubricating liquid inside the storage bottle 223 will not flow out directly from the conduit 224.

[0037] A second L-shaped rod 213 is fixedly connected to the bottom surface of the base plate 1, one end of the second L-shaped rod 213 is fixedly connected to the first round tube 214, a round rod 215 is slidably connected to the inner wall of the first round tube 214, a rack 216 is fixedly connected to the top of the round rod 215, a fixed block 218 is fixedly connected to the surface of one of the vertical plates 101, a rotating rod 219 is rotatably connected to the surface of the fixed block 218, a first gear 220 is fixedly connected to the arc surface of the rotating rod 219, a groove 221 is provided on the side of the first gear 220 away from the fixed block 218, a storage bottle 223 is slidably connected to the inside of the groove 221, an anti-slip pad 222 is fixedly connected to the inner wall of the groove 221, and the anti-slip pad 222 is a rubber pad.

[0038] In this embodiment, the storage bottle 223 is firmly secured in the groove 221 by means of the friction force of the anti-skid pad 222 , ensuring that the storage bottle 223 can be driven to rotate together with the first gear 220 when it rotates.

[0039] The arc surface of the slide rod 204 is covered with a first spring 2061, and the two ends of the first spring 2061 are fixedly connected to the ring 203 and the first cone 206 respectively. The arc surface of the first cylinder 208 is covered with a second spring 210, and the two ends of the second spring 210 are fixedly connected to the first L-shaped tube 209 and the first cylinder 208 respectively. The arc surface of the round rod 215 is covered with a third spring 217, and the two ends of the third spring 217 are fixedly connected to the first round tube 214 and the rack 216 respectively.

[0040] In this embodiment, the first spring 2061, the second spring 210 and the third spring 217 respectively play the role of making the protrusion 205, the second cone 207 and the third cone 2151 rebound, that is, making the entire device return to the initial state to facilitate the next drive and achieve the effect of repeated movement.

[0041] A connection block 225 is fixedly connected to the surface of one of the vertical plates 101 , a circular plate 226 is fixedly connected to the side of the connection block 225 close to the first gear 220 , and a C-shaped tube 227 is fixedly connected to the side of the circular plate 226 away from the connection block 225 .

[0042] In this embodiment, the C-shaped tube 227 serves to accommodate the conduit 224, and the conduit 224 has a certain degree of elasticity, so that as the roller sliding block 103 moves, the conduit 224 can move freely in the C-shaped tube 227 without being scattered. The end of the conduit 224 away from the storage bottle 223 passes through the opening of the C-shaped tube 227 and is connected to the roller sliding block 103.

[0043] In a further embodiment, referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the auxiliary mechanism 3 is used to assist the lubrication mechanism 2 during lubrication. The auxiliary mechanism 3 includes a second gear 313 meshing with the first gear 220. A brush roller 314 is fixedly connected to one side of the second gear 313. The end of the brush roller 314 away from the second gear 313 is rotatably connected to a fixed plate 315. The fixed plate 315 is fixedly connected to the surface of one of the vertical plates 101.

[0044] In this embodiment, the bristles on the brush roller 314 are relatively long, ensuring that they can always contact the surface of the screw body 102, so that when there is residual lubricating liquid on the screw body 102, it can be directly absorbed by the bristles.

[0045] The auxiliary mechanism 3 also includes a second L-shaped cylinder 301 and a third L-shaped rod 306 fixedly connected to the bottom surface of the bottom plate 1. The inner wall of the second L-shaped cylinder 301 is slidably connected to a second cylinder 302. The end of the second cylinder 302 close to the first L-shaped cylinder 209 is fixedly connected to a fourth cone 303. The arc surface of the second cylinder 302 is fixedly connected to two second connecting rods 304. The ends of the two second connecting rods 304 away from the second cylinder 302 are fixedly connected to a second rectangular plate 305. One end of the third L-shaped rod 306 is fixedly connected to the second circular tube 307, the inner wall of the second circular tube 307 is slidably connected to the fourth L-shaped rod 308, the bottom end of the fourth L-shaped rod 308 is fixedly connected to the fifth cone 310, the arc surface of the fourth L-shaped rod 308 is fixedly connected to the arc plate 311, the arc surface of the arc plate 311 is connected to the water pipe 31101, the inner arc surface of the arc plate 311 is fixedly connected to the sponge pad 312, and the sponge pad 312 is located directly below the brush roller 314

[0046] In this embodiment, the length of the first rectangular plate 212 is longer than that of the second rectangular plate 305. This is to allow the brush roller 314 to rotate to absorb the lubricating liquid on the screw body 102 first, and then allow the sponge pad 312 to absorb the lubricating liquid on the brush roller 314, so as to avoid the two moving at the same time and preventing the sponge pad 312 from squeezing the brush roller 314 and hindering the rotation of the brush roller 314.

[0047] The arc surface of the second cylinder 302 is covered with a fourth spring 309, and the two ends of the fourth spring 309 are respectively fixedly connected to the second cylinder 302 and the second L-shaped tube 301. The arc surface of the fourth L-shaped rod 308 is covered with a fifth spring 3101, and the two ends of the fifth spring 3101 are respectively fixedly connected to the fifth cone 310 and the second round tube 307.

[0048] In this embodiment, the fourth spring 309 and the fifth spring 3101 respectively facilitate the rebound of the fourth cone 303 and the fifth cone 310, so that the entire device returns to the initial state to facilitate the next drive, thereby achieving a repeated motion effect.

[0049] The working principle of the present invention is as follows: when the screw body 102 rotates, the roller sliding block 103 moves with the help of the thread and the internal roller. When the roller sliding block 103 moves to the middle of the screw body 102, it squeezes the protrusion 205, and the protrusion 205 moves downward. The first spring 2061 stretches, and the first cone 206 squeezes the second cone 207 and the third cone 2151. The second cone 207 and the third cone 2151 move away from each other. At this time, the first cylinder 208 and The second cylinder 302 will drive the first rectangular plate 212 and the second rectangular plate 305 to move respectively. At the same time, the second spring 210 and the fourth spring 309 are in a compressed state. Since the length of the first rectangular plate 212 is longer than that of the second rectangular plate 305, the first rectangular plate 212 will first squeeze the third cone 2151, then the round rod 215 will move upward, the third spring 217 will be in a stretched state, and the rack 216 will drive the first gear 220. The rotation of the first gear 220 will cause the storage bottle 223 to move upward. The connection between the conduit 224 and the storage bottle 223 is originally located above the storage bottle 223. At this time, the storage bottle 223 rotates, and the connection between the conduit 224 and the storage bottle 223 becomes lower. At this time, the lubricating fluid inside the storage bottle 223 will flow into the conduit 224. Since the conduit 224 is long, the lubricating fluid will first remain inside the conduit 224. When the roller sliding block 103 passes over the protrusion 205, the first spring 2061, the second spring 210, and the third spring 217 rebound. Then the rack 216 will drive the first gear 220 in the opposite direction to return the storage bottle 223 to its original position, that is, the connection between the storage bottle 223 and the guide tube 224 is again located above the storage bottle 223, ensuring that the lubricating liquid inside the storage bottle 223 will not flow out of the guide tube 224. When the roller sliding block 103 squeezes the protrusion 205 for many times, the storage bottle 223 will undergo many angular swings, and the lubricating liquid inside the guide tube 224 will accumulate more and more forward, and finally flow into the roller sliding block 103, achieving the lubrication effect.

[0050] When the first gear 220 rotates, the second gear 313 will also rotate, and the brush roller 314 will rotate at this time. The bristles on the brush roller 314 are always in contact with the screw body 102. In this way, when the roller sliding block 103 is lubricated, as the roller sliding block 103 moves, lubricating liquid will remain on the screw body 102, so the brush roller 314 will absorb some of the remaining lubricating liquid onto the bristles. At the same time, when the first cone 206 presses down to squeeze the third cone 2151, since the length of the first rectangular plate 212 is longer than the length of the second rectangular plate 305, the first rectangular plate 212 will first squeeze to the third cone 2151, and the second rectangular plate 305 will be slower. The fifth cone 310 is squeezed to move the fourth L-shaped rod 308, driving the arc plate 311 to move upward, and the fifth spring 3101 will be in a compressed state. The sponge pad 312 will contact the brush roller 314, and the lubricating liquid on the bristles of the brush roller 314 will be quickly absorbed through the water absorption of the sponge pad 312. The length of the first rectangular plate 212 is longer than the length of the second rectangular plate 305. The purpose is to first rotate the brush roller 314 to absorb the lubricating liquid on the screw body 102, and then absorb the lubricating liquid on the brush roller 314 through the sponge pad 312, so as to avoid the two moving at the same time and the situation that the sponge pad 312 squeezes the brush roller 314 and hinders the rotation of the brush roller 314.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller screw pair for a gantry CNC machine tool, comprising a base plate (1), the end surface of the base plate (1) being fixedly connected to two vertical plates (101), the sides of the two vertical plates (101) close to each other being rotatably connected to a screw body (102), the arc surface of the screw body (102) being mounted with a roller sliding block (103), characterized in that: Also includes: A lubricating mechanism (2) for lubricating a roller sliding block (103), the lubricating mechanism (2) comprising a rectangular hole (201) and a recessed hole (104) provided on the end surface of a bottom plate (1), the bottom surface of the bottom plate (1) being fixedly connected to a first L-shaped rod (202) and a first L-shaped cylinder (209), the surface of the first L-shaped rod (202) being fixedly connected to a circular ring (203), the inner wall of the circular ring (203) being slidably connected to a sliding rod (204), the two ends of the sliding rod (204) being respectively fixedly connected to a convex block (205) and a first cone (206), the inner wall of the first L-shaped cylinder (209) being slidably connected to a first cylinder (208), one end of the first cylinder (208) being fixedly connected to a second cone ( 207), the arc surface of the first cylinder (208) is fixedly connected with two first connecting rods (211), one end of the two first connecting rods (211) away from the first cylinder (208) is fixedly connected with a first rectangular plate (212), a third cone (2151) is provided on one side of the first rectangular plate (212), a rack (216) is provided above the third cone (2151), a first gear (220) is meshed with the tooth surface of the rack (216), a storage bottle (223) is provided on one side of the first gear (220), the arc surface of the storage bottle (223) is connected with a conduit (224), and the end of the conduit (224) away from the storage bottle (223) is connected with the roller sliding block (103); An auxiliary mechanism (3) is used to assist the lubrication mechanism (2) during lubrication, the auxiliary mechanism (3) comprising a second gear (313) meshing with the first gear (220), a brush roller (314) being fixedly connected to one side of the second gear (313), an end of the brush roller (314) away from the second gear (313) being rotatably connected to a fixing plate (315), and the fixing plate (315) being fixedly connected to the surface of one of the vertical plates (101).

2. The roller screw pair for a gantry CNC machine tool according to claim 1, characterized in that: The bottom surface of the bottom plate (1) is fixedly connected to a second L-shaped rod (213), one end of the second L-shaped rod (213) is fixedly connected to a first round tube (214), the inner wall of the first round tube (214) is slidably connected to a round rod (215), the rack (216) is fixedly connected to the top of the round rod (215), a fixed block (218) is fixedly connected to the surface of one of the vertical plates (101), a rotating rod (219) is rotatably connected to the surface of the fixed block (218), the first gear (220) is fixedly connected to the arc surface of the rotating rod (219), a groove (221) is provided on the side of the first gear (220) away from the fixed block (218), and the storage bottle (223) is slidably connected inside the groove (221).

3. The roller screw pair for a gantry CNC machine tool according to claim 2, characterized in that: The arc surface of the sliding rod (204) is covered with a first spring (2061), and the two ends of the first spring (2061) are respectively fixedly connected to the ring (203) and the first cone (206); the arc surface of the first cylinder (208) is covered with a second spring (210), and the two ends of the second spring (210) are respectively fixedly connected to the first L-shaped tube (209) and the first cylinder (208); the arc surface of the round rod (215) is covered with a third spring (217), and the two ends of the third spring (217) are respectively fixedly connected to the first round tube (214) and the rack (216).

4. The roller screw pair for a gantry CNC machine tool according to claim 1, characterized in that: A connection block (225) is fixedly connected to the surface of one of the vertical plates (101); a circular plate (226) is fixedly connected to the side of the connection block (225) close to the first gear (220); and a C-shaped tube (227) is fixedly connected to the side of the circular plate (226) away from the connection block (225).

5. The roller screw pair for gantry CNC machine tools according to claim 2, characterized in that: An anti-skid pad (222) is fixedly connected to the inner wall of the groove (221), and the anti-skid pad (222) is a rubber pad.

6. The roller screw pair for gantry CNC machine tools according to claim 1, characterized in that: The auxiliary mechanism (3) further comprises a second L-shaped cylinder (301) and a third L-shaped rod (306) fixedly connected to the bottom surface of the bottom plate (1); the inner wall of the second L-shaped cylinder (301) is slidably connected to a second cylinder (302); an end of the second cylinder (302) close to the first L-shaped cylinder (209) is fixedly connected to a fourth cone (303); the arc surface of the second cylinder (302) is fixedly connected to two second connecting rods (304); the two second connecting rods (304) are far from the second cylinder (302); One end of the third L-shaped rod (306) is fixedly connected to a second rectangular plate (305), one end of the third L-shaped rod (306) is fixedly connected to a second circular tube (307), the inner wall of the second circular tube (307) is slidably connected to a fourth L-shaped rod (308), the bottom end of the fourth L-shaped rod (308) is fixedly connected to a fifth frustum (310), the arc surface of the fourth L-shaped rod (308) is fixedly connected to an arc plate (311), and the arc surface of the arc plate (311) is connected to a water pipe (31101).

7. The roller screw pair for a gantry CNC machine tool according to claim 6, characterized in that: The arc surface of the second cylinder (302) is sleeved with a fourth spring (309), and two ends of the fourth spring (309) are respectively fixedly connected to the second cylinder (302) and the second L-shaped cylinder (301).

8. The roller screw pair for gantry CNC machine tools according to claim 6, characterized in that: The arc surface of the fourth L-shaped rod (308) is sleeved with a fifth spring (3101), and the two ends of the fifth spring (3101) are respectively fixedly connected to the fifth frustum (310) and the second circular tube (307).

9. The roller screw pair for a gantry CNC machine tool according to claim 6, characterized in that: The inner arc surface of the arc-shaped plate (311) is fixedly connected with a sponge pad (312), and the sponge pad (312) is located directly below the brush roller (314).

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