Numerical control machining center with precise positioning function for mold production

Abstract

The invention provides a numerical control machining center with a precise positioning function for mold production, and relates to the technical field of molds, the numerical control machining center comprises a workbench, a clamping mechanism is arranged at the top of the workbench, a limiting mechanism is arranged in the workbench, and a laser measuring instrument is fixedly mounted on the outer surface of the workbench; and the clamping mechanism comprises two linear motors. According to the device, a to-be-machined product is clamped through the clamping mechanism, the to-be-machined product is clamped through the first clamping plate and the second clamping plate, then the first clamping plate and the second clamping plate are driven by the linear motor to move and are sent to the laser measuring instrument, the to-be-machined product is measured through the laser measuring instrument, and detailed influence data are obtained; meanwhile, the to-be-machined product is fixed through the first clamping plate and the second clamping plate, the to-be-detected product can be driven to a proper position through the linear motor, at the moment, when the to-be-machined product is machined, the to-be-machined product cannot move, and then the effect of accurate positioning is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly to a numerical control machining center with a precise positioning function for mold production. Background Art

[0002] In the existing mold processing and production process, a laser measuring instrument is generally used to scan the product to be processed to obtain corresponding images, and then mapped by the system, and then mold processing is carried out. In mold production, as a precise positioning aid, the laser measuring instrument can well determine the processing position of the product to be processed and prevent damage caused by position deviation during mold processing. However, in the existing technology, the laser measuring instrument needs to perform multi-angle scanning and also requires a specific auxiliary positioning mechanism for positioning. That is, when in use, the operator needs to place the product to be processed in the positioning position of the specific auxiliary positioning mechanism, and then the laser measuring instrument performs scanning. However, during mold processing, it is easy to cause the position of the product to be processed to deviate, and the mold cannot continuously process the product to be processed. Therefore, a numerical control machining center with a precise positioning function for mold production is needed to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art. In the existing mold processing and production process, a laser measuring instrument is generally used to scan the product to be processed to obtain corresponding images, and then mapped by the system, and then mold processing is carried out. In mold production, as a precise positioning aid, the laser measuring instrument can well determine the processing position of the product to be processed and prevent damage caused by position deviation during mold processing. However, in the existing technology, the laser measuring instrument needs to perform multi-angle scanning and also requires a specific auxiliary positioning mechanism for positioning. That is, when in use, the operator needs to place the product to be processed in the positioning position of the specific auxiliary positioning mechanism, and then the laser measuring instrument performs scanning. However, during mold processing, it is easy to cause the position of the product to be processed to deviate, and the mold cannot continuously process the product to be processed.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a CNC machining center with precise positioning function for mold production, comprising a workbench, a clamping mechanism is arranged on the top of the workbench, a limiting mechanism is arranged inside the workbench, a laser measuring instrument is fixedly installed on the outer surface of the workbench, the clamping mechanism comprises two linear motors, one of which is fixedly connected to a fixed plate at its output end, a first clamping plate is fixedly connected to one side of the fixed plate, and two fixed frames are fixedly connected to the top of the other linear motor, a sliding frame is slidably connected to the inner wall of the fixed frame, a first spring is fixedly connected to the inner wall of one side of the sliding frame, one end of the first spring is fixedly connected to the inner wall of the fixed frame, a second clamping plate is fixedly connected between one side of the two sliding frames, and the bottom of one of the linear motors is fixedly connected to the top of the workbench.

[0005] As a preferred embodiment, three sliding holes are opened on the top of the workbench, and the inner walls of two of the sliding holes are fixedly connected with fixed rods, and the outer surfaces of the fixed rods are slidably connected with sliders, the top of the slider is fixedly connected to the bottom of another linear motor, and the outer surface of the slider is slidably connected to the inner wall of the sliding hole.

[0006] As a preferred embodiment, another inner wall of the sliding hole is rotatably connected to a threaded rod, the outer surface of the threaded rod is threadedly connected to a threaded block, the top of the threaded block is fixedly connected to the bottom of the linear motor, and the outer surface of the threaded block is slidably connected to the inner wall of the sliding hole.

[0007] As a preferred embodiment, the bottom of the workbench is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a shaft, the outer surfaces of the shaft and the threaded rod are fixedly sleeved with gears, the outer surfaces of the gears are provided with chains, and the two gears are connected through a chain transmission.

[0008] As a preferred embodiment, the limiting mechanism includes an installation cavity opened on the top of the workbench, the inner wall of the installation cavity is opened with two sliding grooves, and the inner wall of the sliding groove is slidably connected with a slide plate, one side of the slide plate is fixedly connected with two support plates, one side of the two support plates is fixedly connected with a fixed shell, and one side of the fixed shell is fixedly connected with one side of the slide plate.

[0009] As a preferred embodiment, the inner wall of the fixed shell is rotatably connected to two rotating rods, a baffle is fixedly connected between one end of the two rotating rods, the inner wall of the baffle is rotatably connected to a first rotating roller, and a torsion spring is provided on the outer surface of the rotating rod, one end of the torsion spring is fixedly connected to one side of the baffle, and the other side of the torsion spring is fixedly connected to the inner wall of the fixed shell.

[0010] As a preferred embodiment, a plurality of fixing blocks are fixedly connected to one side of the support plate. Second springs are fixedly connected to the tops of the fixing blocks. The tops of the second springs are fixedly connected to support blocks. Second rollers are rotatably connected between the sides of every two support blocks. An expansion rod is fixedly connected between the top of the fixing block and the bottom of the support block. The outer surface of the expansion rod is slidably connected to the outer surface of the second spring.

[0011] As a preferred embodiment, clamping holes are formed in the inner walls on both sides of the fixing shell. A plurality of clamping grooves are formed in the inner walls on both sides of the installation cavity. A clamping rod is slidably connected to the inner wall of the clamping hole. The outer surface of the clamping rod is slidably connected to the inner wall of the clamping groove. One end of the clamping rod is fixedly connected to a third spring. One end of the third spring is fixedly connected to the inner wall of the fixing shell.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are as follows.

[0013] 1. In the present invention, the product to be processed is clamped by the clamping mechanism. The first clamping plate and the second clamping plate clamp the product to be processed. Then, the first clamping plate and the second clamping plate are driven to move by the linear motor and sent to the laser measuring instrument. The laser measuring instrument measures the product to be processed to obtain detailed influence data. At the same time, the product to be processed is fixed by the first clamping plate and the second clamping plate, and the linear motor can drive the product to be detected to a suitable position. When the product to be processed is processed at this time, the product to be processed will not move, thereby achieving the effect of precise positioning. Through the cooperation of the slider and the fixing rod, the slider can be better limited. At the same time, the slider is fixed to the linear motor, making the movement of the linear motor more stable. And through the cooperation of the threaded rod and the threaded block, when the threaded block moves, the movement of the threaded block is more stable. At the same time, through the cooperation between the threaded rod and the threaded block, when the threaded rod rotates, it can drive the threaded block to move. And due to the threaded cooperation between the threaded rod and the threaded block, the threaded block moves more stably during the movement. Through the cooperation between the threaded block and the sliding hole, the threaded block will not rotate with the rotation of the threaded rod. Therefore, the threaded block can be limited through the sliding hole, increasing the structural stability of the threaded block.

[0014] 2. In the present invention, through the mutual cooperation of the sliding plate and the sliding groove, the sliding plate can slide stably. At the same time, a rotational force is given to the baffle by the torsion spring. The torsion spring can enable the baffle to have a force to rotate towards the workbench. Moreover, through the rotating rod and the torsion spring, the baffle can rotate. And when the baffle is stressed, it will rotate towards the inside of the fixed shell. When the product to be processed moves through the linear motor, it will squeeze the baffle, causing the baffle to rotate. At this time, the outer surface of the baffle is flush with the top of the workbench. When the outer surface of the product to be processed contacts the first roller, the baffle is slightly lower than the top of the workbench. At this time, through the first roller, the wear rate of the product to be processed can be reduced as much as possible. At the same time, through the baffle, the placement of the product to be processed can be limited to a certain extent.

[0015] 3. In the present invention, through the second roller, the exposed position of the installation cavity can be compensated to a certain extent, preventing the product from being stuck at the position of the installation cavity. At the same time, through the second spring and the telescopic rod, the position of the second roller can be limited. When the second roller is located at the exposed position of the installation cavity, the top of the second roller can be flush with the top of the workbench, thus facilitating the placement of the product to be processed. At the same time, the telescopic rod can protect the second spring, preventing the second spring from being bent and damaged when compressed. Through the third spring, the positioning of the clamping rod can be better limited, enabling the clamping rod to have a force towards the card slot. And through the clamping rod and the card slot, the fixed shell can be limited. When the clamping rod is located on the inner wall of the card slot, the fixed shell cannot move. When the clamping rod is separated from the card slot, the fixed shell can move. And through the card hole, the clamping rod can be limited, making the movement of the clamping rod more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention;

[0017] Figure 2 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention;

[0018] Figure 3 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention;

[0019] Figure 4 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention;

[0020] Figure 5 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention;

[0021] Figure 6 is a perspective view of a numerically controlled machining center with a precise positioning function for mold production according to the present invention.

[0022] Legend Explanation:

[0023] 1. Workbench; 2. Clamping mechanism; 3. Limiting mechanism; 4. Laser measuring instrument;

[0024] 21. Linear motor; 22. Fixed plate; 23. First clamping plate; 24. Fixed frame; 25. Sliding frame; 26. First spring; 27. Second clamping plate; 28. Sliding hole; 29. Fixed rod; 210. Slider; 211. Threaded rod; 212. Driving motor; 213. Shaft rod; 214. Gear; 215. Chain; 216. Threaded block;

[0025] 31. Installation cavity; 32. Slide plate; 33. Support plate; 34. Fixed shell; 35. Rotating rod; 36. Torsion spring; 37. Baffle; 38. First roller; 39. Fixed block; 310. Second spring; 311. Support block; 312. Second roller; 313. Clamping rod; 314. Third spring. Specific Embodiment

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] Embodiment 1

[0028] As Figure 1-4 shown, the present invention provides a technical solution: a numerically controlled machining center with precise positioning function for mold production, including a workbench 1, a clamping mechanism 2 is arranged on the top of the workbench 1, a limiting mechanism 3 is arranged inside the workbench 1, a laser measuring instrument 4 is fixedly installed on the outer surface of the workbench 1, the clamping mechanism 2 includes two linear motors 21, the output end of one of the linear motors 21 is fixedly connected with a fixed plate 22, one side of the fixed plate 22 is fixedly connected with a first clamping plate 23, the top of the other linear motor 21 is fixedly connected with two fixed frames 24, the inner wall of the fixed frame 24 is slidably connected with a sliding frame 25, one side inner wall of the sliding frame 25 is fixedly connected with a first spring 26, one end of the first spring 26 is fixedly connected with the inner wall of the fixed frame 24, a second clamping plate 27 is fixedly connected between one sides of the two sliding frames 25, and the bottom of one of the linear motors 21 is fixedly connected with the top of the workbench 1;

[0029] Through the above embodiment, the product to be processed is clamped by the clamping mechanism 2, and the first clamping plate 23 and the second clamping plate 27 clamp the product to be processed, and then the first clamping plate 23 and the second clamping plate 27 are driven to move by the linear motor 21 and sent to the laser measuring instrument 4, and the laser measuring instrument 4 measures the product to be processed to obtain detailed impact data. At the same time, the product to be processed is fixed by the first clamping plate 23 and the second clamping plate 27, and the linear motor 21 can drive the product to be tested to a suitable position. At this time, when the product to be processed is processed, the product to be processed will not move, thereby achieving the effect of precise positioning.

[0030] Example 2

[0031] If Figure 3 As shown in FIG. 1 , three sliding holes 28 are provided on the top of the workbench 1, wherein the inner walls of two sliding holes 28 are fixedly connected with fixing rods 29, and the outer surface of the fixing rods 29 is slidably connected with a slider 210, and the top of the slider 210 is fixedly connected with the bottom of another linear motor 21, and the outer surface of the slider 210 is slidably connected with the inner wall of the sliding hole 28, and the inner wall of the other sliding hole 28 is rotatably connected with a threaded rod 211, and the outer surface of the threaded rod 211 is threadedly connected with a threaded block 216, and the top of the threaded block 216 is fixedly connected with the bottom of the linear motor 21, and the outer surface of the threaded block 216 is slidably connected with the inner wall of the sliding hole 28, and the bottom of the workbench 1 is fixedly connected with a driving motor 212, and the output end of the driving motor 212 is fixedly connected with a shaft 213, and the outer surfaces of the shaft 213 and the threaded rod 211 are fixedly sleeved with a gear 214, and the outer surface of the gear 214 is provided with a chain 215, and the two gears 214 are connected through the chain 215;

[0032] Through the above embodiment, the slider 210 and the fixing rod 29 cooperate with each other, so that the slider 210 can be better limited, and the slider 210 is fixed to the linear motor 21, so that the movement of the linear motor 21 is more stable, and the threaded rod 211 and the threaded block 216 cooperate with each other, so that the threaded block 216 can move more stably during the movement process, and through the mutual cooperation between the threaded rod 211 and the threaded block 216, the threaded rod 211 can drive the threaded block 216 to move when it rotates, and the thread cooperation between the threaded rod 211 and the threaded block 216 makes the threaded block 216 more stable during the movement process, and the mutual cooperation between the threaded block 216 and the sliding hole 28 means that the threaded block 216 will not rotate with the rotation of the threaded rod 211, and then the threaded block 216 can be limited by the sliding hole 28, thereby increasing the structural stability of the threaded block 216.

[0033] Example 3

[0034] If Figure 1 and Figure 5-6 ​​As shown in the figure, the limiting mechanism 3 includes an installation cavity 31 opened at the top of the workbench 1. Two sliding grooves are opened on the inner wall of the installation cavity 31, and a sliding plate 32 is slidably connected to the inner wall of the sliding groove. One side of the sliding plate 32 is fixedly connected with two support plates 33. A fixed shell 34 is fixedly connected between the sides of the two support plates 33. One side of the fixed shell 34 is fixedly connected with one side of the sliding plate 32. Two rotating rods 35 are rotatably connected to the inner wall of the fixed shell 34. A baffle 37 is fixedly connected between the ends of the two rotating rods 35. A first roller 38 is rotatably connected to the inner wall of the baffle 37. A torsion spring 36 is arranged on the outer surface of the rotating rod 35. One end of the torsion spring 36 is fixedly connected with one side of the baffle 37, and the other side of the torsion spring 36 is fixedly connected with the inner wall of the fixed shell 34;

[0035] Through the above embodiments, through the mutual cooperation of the sliding plate 32 and the sliding groove, the sliding plate 32 can slide stably. At the same time, a rotational force is given to the baffle 37 through the torsion spring 36. Through the torsion spring 36, the baffle 37 can have a force to rotate towards the workbench 1. And through the rotating rod 35 and the torsion spring 36, the baffle 37 can rotate. Moreover, when the baffle 37 is stressed, it will rotate towards the inside of the fixed shell 34. When the product to be processed moves through the linear motor 21, it will squeeze the baffle 37, causing the baffle 37 to rotate. At this time, the outer surface of the baffle 37 is flush with the top of the workbench 1. When the outer surface of the product to be processed contacts the first roller 38, the baffle 37 is slightly lower than the top of the workbench 1. At this time, through the first roller 38, the wear rate of the product to be processed can be reduced as much as possible. At the same time, through the baffle 37, the placement of the product to be processed can be limited to a certain extent;

[0036] A plurality of fixing blocks 39 are fixedly connected to one side of the support plate 33. A second spring 310 is fixedly connected to the top of each fixing block 39. The top end of the second spring 310 is fixedly connected with a support block 311. A second roller 312 is rotatably connected between the sides of the two support blocks 311. A telescopic rod is fixedly connected between the top of the fixing block 39 and the bottom of the support block 311. The outer surface of the telescopic rod is slidably connected with the outer surface of the second spring 310;

[0037] Through the above embodiments, through the second roller 312, the exposed position of the installation cavity 31 can be compensated to a certain extent, preventing the product from being stuck at the position of the installation cavity 31. At the same time, through the second spring 310 and the telescopic rod, the position of the second roller 312 can be limited. When the second roller 312 is located at the exposed position of the installation cavity 31, the top of the second roller 312 can be flush with the top of the workbench 1, which is convenient for placing the product to be processed. At the same time, the telescopic rod can protect the second spring 310 to prevent the second spring 310 from being bent and damaged when compressed;

[0038] Both inner walls on two sides of the fixed housing 34 are provided with clamping holes, and multiple clamping grooves are provided on both inner walls of the installation cavity 31. A clamping rod 313 is slidably connected to the inner wall of the clamping hole, the outer surface of the clamping rod 313 is slidably connected to the inner wall of the clamping groove, one end of the clamping rod 313 is fixedly connected to a third spring 314, and one end of the third spring 314 is fixedly connected to the inner wall of the fixed housing 34;

[0039] Through the above embodiments, the third spring 314 can better limit the clamping rod 313, so that the clamping rod 313 has a force towards the clamping groove. And through the clamping rod 313 and the clamping groove, the fixed housing 34 can be limited. When the clamping rod 313 is located on the inner wall of the clamping groove, the fixed housing 34 cannot move. When the clamping rod 313 is separated from the clamping groove, the fixed housing 34 can move. And through the clamping hole, the clamping rod 313 can be limited, making the movement of the clamping rod 313 more stable.

[0040] Working principle:

[0041] Such as Figure 1-6As shown, during use, the product to be processed is placed on the top of the workbench 1 and contacts the baffle 37 and the first clamping plate 23. Then, the driving motor 212 drives the threaded rod 211 to rotate through the shaft rod 213, the gear 214, and the chain 215. The rotation of the threaded rod 211 drives the threaded block 216 to move. The movement of the threaded block 216 drives the linear motor 21 to move. The movement of the linear motor 21 drives the fixed frame 24 to move. The movement of the fixed frame 24 drives the sliding frame 25 to move. The movement of the sliding frame 25 drives the second clamping plate 27 to move. At this time, the second clamping plate 27 contacts the product to be processed. Then, the second clamping plate 27 is driven to move by the driving motor 212. At this time, since the second clamping plate 27 is restricted by the product to be processed, the sliding frame 25 is caused to move. The movement of the sliding frame 25 drives the first spring 26 to stretch. The first spring 26 can prevent the moving force applied by the driving motor 212 from directly acting on the product to be processed through the second clamping plate 27 and avoid damage to the product to be processed. When the second clamping plate 27 contacts one side of the linear motor 21, the driving motor 212 stops rotating. Then, the linear motor 21 drives the first clamping plate 23 and the second clamping plate 27 to move. The first clamping plate 23 and the second clamping plate 27 drive the product to be processed to move. The movement of the product to be processed squeezes the baffle 37. The baffle 37 will rotate under the force of extrusion. Finally, the first roller 38 on the baffle 37 contacts the product to be processed. Subsequently, the product to be processed is scanned by the laser measuring instrument and then sent to a suitable position for processing by the linear motor 21. The pulling rod 313 is separated from the card slot. Then, the fixed shell 34 can be moved. The movement of the fixed shell 34 drives the sliding plate 32 to move. The movement of the sliding plate 32 drives the support plate 33 to move. The movement of the support plate 33 drives the fixed block 39, the support block 311, the telescopic rod, the second spring 310, and the second roller 312 to move. At the same time, when the second roller 312 on one side of the fixed shell 34 is squeezed by the force between it and the installation cavity 31, the second roller 312 moves downward, and at the same time, the opposite side separates from the inner wall of the installation cavity 31 and pops out under the action of the second spring 310, thus avoiding a large vacancy in the installation cavity 31 when the fixed shell 34 moves. When the fixed shell 34 moves to a suitable position, at this time, the third spring 314 can make the clamping rod 313 enter the inner wall of the card slot for fixation.

[0042] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A CNC machining center with precise positioning function for mold production, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a clamping mechanism (2), the interior of the workbench (1) is provided with a limiting mechanism (3), the outer surface of the workbench (1) is fixedly mounted with a laser measuring instrument (4), the clamping mechanism (2) comprises two linear motors (21), the output end of one of the linear motors (21) is fixedly connected to a fixed plate (22), one side of the fixed plate (22) is fixedly connected to a first clamping plate (23), the top of the other linear motor (21) is fixedly connected to two fixed frames (24), the inner wall of the fixed frame (24) is slidably connected to a sliding frame (25), one side of the inner wall of the sliding frame (25) is fixedly connected to a first spring (26), one end of the first spring (26) is fixedly connected to the inner wall of the fixed frame (24), a second clamping plate (27) is fixedly connected between one side of the two sliding frames (25), and the bottom of one of the linear motors (21) is fixedly connected to the top of the workbench (1).

2. A CNC machining center with precise positioning function for mold production according to claim 1, characterized in that: The top of the workbench (1) is provided with three sliding holes (28), wherein the inner walls of two of the sliding holes (28) are fixedly connected with fixing rods (29), the outer surfaces of the fixing rods (29) are slidably connected with a slider (210), the top of the slider (210) is fixedly connected with the bottom of another linear motor (21), and the outer surface of the slider (210) is slidably connected with the inner wall of the sliding hole (28).

3. A CNC machining center with precise positioning function for mold production according to claim 2, characterized in that: The inner wall of another sliding hole (28) is rotatably connected to a threaded rod (211), the outer surface of the threaded rod (211) is threadedly connected to a threaded block (216), the top of the threaded block (216) is fixedly connected to the bottom of the linear motor (21), and the outer surface of the threaded block (216) is slidably connected to the inner wall of the sliding hole (28).

4. The CNC machining center with precise positioning function for mold production according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to a driving motor (212), the output end of the driving motor (212) is fixedly connected to a shaft (213), the outer surfaces of the shaft (213) and the threaded rod (211) are fixedly sleeved with gears (214), the outer surfaces of the gears (214) are provided with chains (215), and the two gears (214) are connected in transmission via the chain (215).

5. The CNC machining center with precise positioning function for mold production according to claim 1, characterized in that: The limiting mechanism (3) comprises an installation cavity (31) provided on the top of the workbench (1); the inner wall of the installation cavity (31) is provided with two sliding grooves, and the inner wall of the sliding groove is slidably connected with a slide plate (32); one side of the slide plate (32) is fixedly connected with two support plates (33); one side of the two support plates (33) is fixedly connected with a fixed shell (34); one side of the fixed shell (34) is fixedly connected with one side of the slide plate (32).

6. A CNC machining center with precise positioning function for mold production according to claim 5, characterized in that: The inner wall of the fixed shell (34) is rotatably connected to two rotating rods (35), one end of the two rotating rods (35) is fixedly connected to a baffle (37), the inner wall of the baffle (37) is rotatably connected to a first rotating roller (38), and the outer surface of the rotating rod (35) is provided with a torsion spring (36), one end of the torsion spring (36) is fixedly connected to one side of the baffle (37), and the other side of the torsion spring (36) is fixedly connected to the inner wall of the fixed shell (34).

7. The CNC machining center with precise positioning function for mold production according to claim 5, characterized in that: A plurality of fixed blocks (39) are fixedly connected to one side of the support plate (33); the top of each fixed block (39) is fixedly connected to a second spring (310); the top of each second spring (310) is fixedly connected to a support block (311); a second roller (312) is rotatably connected between one side of each of the support blocks (311); a telescopic rod is fixedly connected between the top of the fixed block (39) and the bottom of the support block (311); and the outer surface of the telescopic rod is slidably connected to the outer surface of the second spring (310).

8. The CNC machining center with precise positioning function for mold production according to claim 5, characterized in that: The inner walls on both sides of the fixed shell (34) are provided with clamping holes, the inner walls on both sides of the installation cavity (31) are provided with a plurality of clamping grooves, the inner walls of the clamping holes are slidably connected with a clamping rod (313), the outer surface of the clamping rod (313) is slidably connected with the inner walls of the clamping grooves, one end of the clamping rod (313) is fixedly connected with a third spring (314), and one end of the third spring (314) is fixedly connected with the inner wall of the fixed shell (34).

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