An arc cam grinding numerical control rotary table

Abstract

The application discloses a cambered surface cam grinding numerical control rotary table and belongs to the field of numerical control rotary table equipment. The cambered surface cam grinding numerical control rotary table comprises a cam roller mechanism and an auxiliary assembly arranged in a box body; the auxiliary assembly comprises a lubricating assembly, a buffer adjusting assembly and a braking assembly; the braking assembly drives an adjusting rod arranged in the buffer adjusting device to open a storage object arranged in the lubricating assembly, so that lubricating oil in the storage object is infiltrated into a shaft core arranged in the cam roller mechanism through external infiltration members.

Description

Technical Field

[0001] This invention belongs to the field of CNC rotary table equipment, and more specifically, relates to a CNC rotary table for arc surface cam grinding. Background Technology

[0002] A CNC rotary table is a component of a CNC machine tool, used to achieve the rotational movement of the workpiece during machining. The function of a CNC rotary table on a machine tool is to enable the workpiece to rotate precisely in the horizontal or vertical direction under the control of the CNC system, so as to complete machining operations in different directions, such as milling, drilling, and turning. Under high-speed and high-load operation, key components of the CNC rotary table may experience wear, which will affect the lifespan and reliability of the equipment. Furthermore, if the cam rollers are not adequately lubricated, high-speed movement and high loads may cause noise from the CNC rotary table. In existing technology, the cam roller mechanism inside the CNC rotary table cannot be lubricated automatically. Due to the structure of the equipment, adding lubricant to the cam roller mechanism inside the CNC rotary table requires first disassembling the external housing, a process that is not only cumbersome but also time-consuming. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a CNC rotary table for grinding arc-shaped cams, which can automatically add lubricating oil to the cam roller mechanism.

[0004] This invention discloses a CNC rotary table for arc-shaped cam grinding, comprising a housing; a cam roller mechanism and auxiliary components are disposed within the housing; the cam roller mechanism includes a roller assembly and a cam; the roller assembly includes a shaft assembly and several roller assemblies; the roller assemblies are spaced apart and embedded around the outer circumference of the shaft assembly, and are meshed and driven by the cam; each roller assembly includes a roller bushing and a roller core; the roller bushing is rotatably sleeved around the outer circumference of the roller core; the auxiliary components include a lubrication component, a buffer adjustment component, and a braking component; the braking component is fixedly disposed on the upper end of one side of the side seat and is disposed on the same side as the base; the output end of the braking component and the input end of the buffer adjustment component are disposed on the same horizontal line; the braking component controls the activation of the buffer adjustment component; the buffer adjustment component is fixedly disposed within a channel provided by the roller core, the channel extending from the upper surface to the lower surface of the roller core; the lubrication component is fixedly disposed at the end of the roller core away from the roller bushing; the lubrication component is embedded around the outer circumference of the shaft assembly and fixedly connected to it; the output end of the lubrication component is connected and conductive to the end of the roller assembly embedded in the shaft assembly.

[0005] As a further improvement of the present invention, the buffer adjustment assembly includes an adjusting rod, an upper fixed seat, a lower fixed seat, and a first elastic member; the upper fixed seat is slidably disposed at the upper end of the channel of the roller shaft core; the lower fixed seat is fixedly embedded in the lower end of the channel of the roller shaft core; one end of the adjusting rod passes through the upper fixed seat and is fixedly connected to the upper fixed seat; the other end of the adjusting rod away from the upper fixed seat passes through the lower fixed seat and is slidably connected to the lower fixed seat; the upper fixed seat and the lower fixed seat are spaced apart; the first elastic member is sleeved on the outer periphery of the adjusting rod and disposed between the upper fixed seat and the lower fixed seat to open the upper fixed seat and the lower fixed seat; the top of the first elastic member is fixedly connected to the bottom of the upper fixed seat, and the bottom of the first elastic member is fixedly connected to the top of the lower fixed seat.

[0006] As a further improvement of the present invention, the lubrication assembly includes an immersion member and a storage member; the immersion member is abutted against the outer circumference of the storage member; a plurality of through holes are opened on the outer circumference of the side of the storage member that is in contact with the immersion member to connect the interior of the immersion member and the storage member; the side of the storage member away from the immersion member is embedded in the shaft assembly along the outer circumference of the shaft assembly and fixedly connected to it; the number of through holes in the storage member is the same as the number of roller assemblies; the center of the through hole is on the same central axis as the central axis of the corresponding adjusting rod.

[0007] As a further improvement of the present invention, a plug is installed in the through hole of the storage component through a tension member fixedly installed on the outer wall of the storage component to seal the through hole; the outer circumferential diameter of the plug gradually decreases from one end to the other, the end of the plug with a larger outer circumferential diameter is located inside the storage component, and the end of the plug with a smaller outer circumferential diameter penetrates the through hole to seal the through hole; the maximum outer circumferential diameter of the plug is greater than the diameter of the through hole; the tension member includes a fixing frame and several tension springs; the fixing frame is fixedly connected to the outer wall of the storage component around the outer circumference of the through hole; one end of the tension spring is fixedly connected to the end of the fixing frame away from the storage component, and the other end of the tension spring is fixedly connected to the outer circumference of the middle end of the plug; a protective sleeve is fitted around the outer circumference of the tension spring to prevent the tension spring from getting stuck with the wall of the through hole after being stretched; the protective sleeve is made of a flexible and stretchable material.

[0008] The end of the adjusting rod furthest from the upper fixed seat passes through the lower fixed seat and the immersion piece in sequence, abutting against the outer surface of the plug on the through hole; the outer diameter of the adjusting rod is smaller than the diameter of the through hole.

[0009] As a further improvement of the present invention, the end of the adjusting rod away from the upper fixed seat is wrapped with a dipping element; both the immersion element and the dipping element are made of moisture-absorbing and oil-absorbing materials.

[0010] As a further improvement of the present invention, the shaft assembly includes an output shaft, and a plurality of roller assemblies are equally spaced around the output shaft in the circumferential direction; the cam includes an input shaft and a tooth profile disposed in the middle section of the input shaft and rotating coaxially; the middle section of the input shaft is provided to reduce in diameter from both ends of the axial direction towards the center; support frames are respectively fixedly provided at both ends of the top of the base; the two ends of the cam are respectively rotatably connected through the corresponding support frames.

[0011] The protective cover is equipped with a drive assembly; the drive assembly includes a second motor; the output end of the second motor is connected to one end of the cam to drive the cam to perform reciprocating rotational motion.

[0012] The roller assembly also includes a roller bushing; the tooth profile is helically disposed on the outer periphery of the input shaft and forms several interval spaces; the interval spaces are used to support the roller bushing; the tooth profile has opposing tooth surfaces on both sides; the tooth surfaces abut against the outer wall of the roller bushing of the roller assembly.

[0013] The outer wall of the roller bushing abuts against the tooth surface. As the output shaft rotates, the roller bushing moves along the tooth surface in a point-to-line contact sliding state. The roller bushing is rotated and fitted around the outer circumference of the roller core.

[0014] As a further improvement of the present invention, the braking assembly includes a first motor, a support base, and a brake lever; the first motor is fixedly connected to a side seat via the support base; the output end of the first motor is fixedly connected to one end of the brake lever to drive the brake lever to reciprocate; the central axis of the brake lever is arranged parallel to the horizontal central axis of the cam; the distance between the central axis of the brake lever and the horizontal central axis of the cam is the same as the distance between the center of the output shaft and the horizontal central axis of the cam.

[0015] As a further improvement of the present invention, the adjusting rod is slidably connected to the upper fixed seat, and the upper fixed seat is fixedly disposed at the upper end of the channel of the roller shaft core; the lower fixed seat has a receiving cavity inside, and a second elastic member is embedded in the receiving cavity; the adjusting rod passes through the second elastic member and is fixedly connected to the second elastic member.

[0016] As a further improvement of the present invention, the end of the adjusting rod away from the upper fixed seat is conical; a plug is fixedly provided at the end of the adjusting rod away from the upper fixed seat; the plug includes a plug column and a plug block; the plug column is conical, and the tip of the plug column is fixedly connected to the tip of the adjusting rod; the end of the plug column away from the adjusting rod is fixedly connected to the end of the plug block; the outer diameter of the plug block is larger than the diameter of the through hole.

[0017] As a further improvement of the present invention, a third elastic element is fixedly provided between the roller shaft core and the roller bushing to alleviate the impact or vibration generated between the roller bushing and the tooth profile.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention includes an auxiliary component, which includes a braking component, a lubrication component, and a buffer adjustment component; the braking component drives the adjustment rod in the buffer adjustment device to open the storage component in the lubrication component, so that the lubricating oil in the storage component can be lubricated by the external wetting component to the shaft core of the cam roller mechanism; and the first elastic element in the buffer adjustment component can play a buffering role when the roller assembly is impacted; such a configuration not only extends the service life of the cam assembly, but also makes the cam assembly run more smoothly.

[0019] Furthermore, the adjusting rod in the buffer adjustment assembly cooperates with the storage component in the lubrication assembly, and the opening and closing of the storage component is controlled by the braking assembly, thereby realizing the outflow of lubricating oil inside the storage component, ensuring that there is neither too much nor too little lubricating oil on the immersion component. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is one of the partial structural schematic diagrams of the present invention;

[0022] Figure 3 This is a second partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the roller assembly of the present invention;

[0024] Figure 5 This is a partial cross-sectional structural diagram of the present invention;

[0025] Figure 6 This is a schematic cross-sectional view of the buffer adjustment component of the present invention;

[0026] Figure 7 This is a schematic diagram of one end of the adjusting rod of the present invention.

[0027] Explanation of the labels in the diagram:

[0028] 1. Housing; 2. Protective cover; 3. Braking assembly; 4. Roller assembly; 41. Roller assembly; 411. Roller bushing; 412. Roller shaft core; 42. Output shaft; 43. Lubrication assembly; 431. Immersion component; 432. Storage component; 4321. Through hole; 44. Buffer adjustment assembly; 441. Adjusting rod; 443. Upper fixed seat; 444. First elastic element; 445. Lower fixed seat; 5. Cam; 51. Input shaft; 52. Tooth profile; 6. Base; 7. Side seat; 8. Second motor. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0030] Specific Implementation Example 1: Please refer to Figure 1-4 A CNC rotary table for arc-shaped cam grinding includes a housing 1, a protective cover 2, a base 6, and a side seat 7; one end of the base 6 is installed and connected to the lower end of the side seat 7; the housing 1 is placed on top of the base 6, the bottom of the housing 1 is installed and connected to the top of the base 6, and one side of the housing 1 is installed and connected to one side of the side seat 7; the protective cover 2 is placed on the side of the side seat 7 away from the housing 1 and is fixedly connected to the side seat 7.

[0031] Both the housing 1 and the protective cover 2 are hollow. The housing 1 is equipped with a cam roller mechanism and auxiliary components. The cam roller mechanism includes a roller assembly 4 and a cam 5. The roller assembly 4 includes a shaft assembly and several roller assemblies 41. The roller assemblies 41 are spaced apart and embedded around the outer circumference of the shaft assembly, and are meshed and connected with the cam 5. The spacing between each roller assembly 41 is equal.

[0032] The roller assembly 41 includes a roller bushing 411 and a roller core 412; the roller bushing 411 is rotatably sleeved on the outer periphery of the roller core 412; the auxiliary assembly includes a lubrication assembly 43, a buffer adjustment assembly 44, and a braking assembly 3; the braking assembly 3 is fixedly disposed on the upper end of one side of the side seat 7 and is disposed on the same side as the base 6; the output end of the braking assembly 3 is disposed on the same horizontal line as the input end of the buffer adjustment assembly 44; the braking assembly 3 controls the start of the buffer adjustment assembly 44; the buffer adjustment assembly 44 is fixedly disposed in the channel provided in the roller core 412, the channel passing through the upper surface to the lower surface of the roller core 412; the lubrication assembly 43 is fixedly disposed at the end of the roller core 412 away from the roller bushing 411; the lubrication assembly 43 is embedded in the roller assembly and fixedly connected to it around the outer periphery of the roller assembly; the output end of the lubrication assembly is connected and conductive to the end of the roller assembly 41 embedded in the roller assembly.

[0033] like Figure 4As shown, the buffer adjustment assembly 44 includes an adjustment rod 441, an upper fixed seat 443, a lower fixed seat 445, and a first elastic member 444. The upper fixed seat 443 is slidably disposed at the upper end of the channel of the roller shaft core 412. The lower fixed seat 445 is fixedly embedded in the lower end of the channel of the roller shaft core 412. One end of the adjustment rod 441 passes through the upper fixed seat 443 and is fixedly connected to the upper fixed seat 443. The other end of the adjustment rod 441 away from the upper fixed seat 443 passes through the lower fixed seat 445 and is slidably connected to the lower fixed seat 445. The upper fixed seat 443 and the lower fixed seat 445 are spaced apart. The first elastic member 444 is sleeved on the outer periphery of the adjustment rod 441 and disposed between the upper fixed seat 443 and the lower fixed seat 445 to open the upper fixed seat 443 and the lower fixed seat 445. The top of the first elastic member 444 is fixedly connected to the bottom of the upper fixed seat 443, and the bottom of the first elastic member 444 is fixedly connected to the top of the lower fixed seat 445.

[0034] Preferably, the first elastic element 444 is a support spring.

[0035] The lubrication assembly 43 includes an immersion member 431 and a storage member 432; the immersion member 431 is disposed abutting against the outer circumference of the storage member 432; a plurality of through holes 4321 are provided on the outer circumference of the side of the storage member 432 that is in contact with the immersion member 431 to connect the interior of the immersion member 431 and the storage member 432; the side of the storage member 432 away from the immersion member 431 is embedded in the shaft assembly along the outer circumference of the shaft assembly and fixedly connected to it.

[0036] Storage component 432 is used to store lubricating oil; the outer wall of storage component 432 has a feed port and is connected to the outside through a feed pipe.

[0037] Preferably, the number of through holes 4321 in the storage component 432 is the same as the number of roller assemblies 41; the center of the through hole 4321 is on the same central axis as the central axis of the corresponding adjusting rod 441.

[0038] A plug is installed in the through hole 4321 of the storage component 432 via a tension member fixedly installed on the outer wall of the storage component 432 to seal the through hole 4321. The outer diameter of the plug gradually decreases from one end to the other. The end of the plug with a larger outer diameter is located inside the storage component 432, and the end of the plug with a smaller outer diameter passes through the through hole 4321 to seal the through hole 4321. The maximum outer diameter of the plug is greater than the diameter of the through hole 4321. The tension member includes a fixing frame and several tension springs. The fixing frame is fixedly connected to the outer wall of the storage component 432 around the outer periphery of the through hole 4321. One end of the tension spring is fixedly connected to the end of the fixing frame away from the storage component 432, and the other end of the tension spring is fixedly connected to the outer periphery of the middle end of the plug. A protective sleeve is fitted around the outer periphery of the tension spring to prevent the tension spring from getting stuck in the wall of the through hole 4321 after being stretched. The protective sleeve is made of a flexible and stretchable material.

[0039] The end of the adjusting rod 441 away from the upper fixed seat 443 passes through the lower fixed seat 445 and the immersion member 431 in sequence and abuts against the outer surface of the plug on the through hole 4321; the outer diameter of the adjusting rod 441 is smaller than the diameter of the through hole 4321.

[0040] Preferably, the end of the adjusting rod 441 away from the upper fixed seat 443 is covered with a dipping element.

[0041] Preferably, both the immersion part 431 and the dipping part are made of moisture-absorbing and oil-absorbing materials, such as sponge, textiles, foam, etc.

[0042] The braking assembly 3 includes a first motor, a support base, and a brake lever; the first motor is fixedly connected to the side seat 7 via the support base; the output end of the first motor is fixedly connected to one end of the brake lever to drive the brake lever to reciprocate; the central axis of the brake lever is parallel to the horizontal central axis of the cam 5; the distance between the central axis of the brake lever and the horizontal central axis of the cam 5 is the same as the distance between the center of the output shaft 42 and the horizontal central axis of the cam 5.

[0043] The shaft assembly includes an output shaft 42, and a plurality of roller assemblies 41 are equally spaced around the output shaft 42; the cam 5 includes an input shaft 51 and a tooth profile 52 located in the middle section of the input shaft 51 and rotating coaxially; the middle section of the input shaft 51 is provided with a diameter reduction from both ends of the axial direction towards the center; support frames are fixedly provided at both ends of the top of the base 6; the two ends of the cam 5 are rotatably connected through the corresponding support frames.

[0044] The protective cover 2 is equipped with a drive assembly; the drive assembly includes a second motor 8; the output end of the second motor 8 is connected to one end of the cam 5 to drive the cam 5 to perform reciprocating rotational motion.

[0045] The tooth profile 52 is spirally disposed on the outer periphery of the input shaft 51 and forms several interval spaces; the interval spaces are used to support the roller bushing 411; the tooth profile 52 has tooth surfaces that are relatively opposite on both sides; the tooth surfaces abut against the outer wall of the roller bushing 411 of the roller assembly 41.

[0046] The outer wall of the roller bushing 411 abuts against the tooth surface. As the output shaft 42 rotates, the roller bushing 411 slides along the tooth surface in a point-to-line contact state.

[0047] Specific embodiment two, such as Figure 6 As shown, unlike the first specific embodiment, the adjusting rod 441 is slidably connected to the upper fixed seat 443, and the upper fixed seat 443 is fixedly set at the upper end of the channel of the roller shaft core 412.

[0048] The lower fixed base 445 has a receiving cavity inside, and a second elastic element is embedded in the receiving cavity; the adjusting rod 441 passes through the second elastic element and is fixedly connected to the second elastic element.

[0049] Specific embodiment three, such as Figure 7 As shown, unlike specific embodiments one and two, the end of the adjusting rod 441 away from the upper fixed seat 443 is conical; a plug is fixedly provided at the end of the adjusting rod 441 away from the upper fixed seat 443; the plug includes a plug post 4411 and a plug block 4412; the plug post 4411 is conical, and the tip of the plug post 4411 is fixedly connected to the tip of the adjusting rod 441; the end of the plug post 4411 away from the adjusting rod 441 is fixedly connected to the end of the plug block 4412; the outer diameter of the plug block 4412 is larger than the diameter of the through hole 4321.

[0050] In Specific Embodiment Four, which differs from Specific Embodiment One, Specific Embodiment Two, and Specific Embodiment Three, a third elastic element is fixedly provided between the roller shaft core 412 and the roller bushing 411 to alleviate the impact or vibration generated between the roller bushing 411 and the tooth profile 52.

[0051] The above description is merely a preferred embodiment of this application; however, the scope of protection of this application is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and its improved concept, should be covered within the scope of protection of this application.

Claims

1. A CNC rotary table for arc-shaped cam grinding, comprising a housing (1); a cam roller mechanism and auxiliary components are provided inside the housing (1); the cam roller mechanism includes a roller assembly (4) and a cam (5); the roller assembly (4) includes a shaft assembly and a plurality of roller assemblies (41); the roller assemblies (41) are spaced apart and embedded around the outer circumference of the shaft assembly, and are meshed and connected with the cam (5); the roller assembly (41) includes a roller bushing (411) and a roller core (412); the roller bushing (411) is rotatably sleeved on the outer circumference of the roller core (412); characterized in that: The auxiliary components include a lubrication component (43), a buffer adjustment component (44), and a braking component (3); the braking component (3) is fixedly installed on the upper end of one side of the side seat (7) and is installed on the same side as the base (6); the output end of the braking component (3) and the input end of the buffer adjustment component (44) are installed on the same horizontal line; the braking component (3) controls the start of the buffer adjustment component (44); the buffer adjustment component (44) is fixedly installed in the channel provided in the roller shaft core (412), and the channel passes through the upper surface to the lower surface of the roller shaft core (412); the lubrication component (43) is fixedly installed at the end of the roller shaft core (412) away from the roller bushing (411); the lubrication component (43) is embedded in the shaft assembly and fixedly connected to it along the outer circumference of the shaft assembly; the output end of the lubrication component is connected and connected to the end of the roller assembly (41) embedded in the shaft assembly; The lubrication assembly (43) includes an immersion part (431) and a storage part (432); the immersion part (431) is abutted against the outer circumference of the storage part (432); a plurality of through holes (4321) are provided on the outer circumference of the side of the storage part (432) that is in contact with the immersion part (431) to connect the interior of the immersion part (431) and the storage part (432); the side of the storage part (432) away from the immersion part (431) is embedded in the shaft assembly along the outer circumference of the shaft assembly and fixedly connected to it; the number of through holes (4321) of the storage part (432) is the same as the number of roller assemblies (41); the center of the through hole (4321) is on the same central axis as the central axis of the corresponding adjusting rod (441); A plug is installed in the through hole (4321) of the storage component (432) through a tension member fixedly installed on the outer wall of the storage component (432) to seal the through hole (4321); the outer diameter of the plug gradually decreases from one end to the other, the end with the larger outer diameter of the plug is located inside the storage component (432), and the end with the smaller outer diameter of the plug passes through the through hole (4321) to seal the through hole (4321); the maximum outer diameter of the plug is greater than the diameter of the through hole (4321); the tension member includes a fixing frame and several tension springs; the fixing frame surrounds the outer periphery of the through hole (4321) and is fixedly connected to the outer wall of the storage component (432); one end of the tension spring is fixedly connected to the end of the fixing frame away from the storage component (432), and the other end of the tension spring is fixedly connected to the outer periphery of the middle end of the plug; a protective sleeve is fitted around the outer periphery of the tension spring to prevent the tension spring from getting stuck on the wall of the through hole (4321) after being stretched; the protective sleeve is made of a flexible and stretchable material; The end of the adjusting rod (441) away from the upper fixed seat (443) passes through the lower fixed seat (445) and the immersion member (431) in sequence and abuts against the outer surface of the plug on the through hole (4321); the outer diameter of the adjusting rod (441) is smaller than the diameter of the through hole (4321).

2. The CNC rotary table for arc-shaped cam grinding according to claim 1, characterized in that: The buffer adjustment assembly (44) includes an adjusting rod (441), an upper fixed seat (443), a lower fixed seat (445), and a first elastic element (444); the upper fixed seat (443) is slidably disposed at the upper end of the channel of the roller shaft core (412); the lower fixed seat (445) is fixedly embedded at the lower end of the channel of the roller shaft core (412); one end of the adjusting rod (441) passes through the upper fixed seat (443) and is fixedly connected to the upper fixed seat (443); the other end of the adjusting rod (441) away from the upper fixed seat (443) passes through the lower fixed seat (444). 445), which is slidably connected to the lower fixed seat (445); the upper fixed seat (443) and the lower fixed seat (445) are spaced apart; the first elastic element (444) is sleeved on the outer periphery of the adjusting rod (441) and is disposed between the upper fixed seat (443) and the lower fixed seat (445) to open the upper fixed seat (443) and the lower fixed seat (445); the top of the first elastic element (444) is fixedly connected to the bottom of the upper fixed seat (443), and the bottom of the first elastic element (444) is fixedly connected to the top of the lower fixed seat (445).

3. The CNC rotary table for arc-shaped cam grinding according to claim 1, characterized in that: The end of the adjusting rod (441) away from the upper fixed seat (443) is covered with a dipping element; both the immersion element (431) and the dipping element are made of moisture-absorbing and oil-absorbing materials.

4. The CNC rotary table for arc-shaped cam grinding according to claim 1, characterized in that: The shaft assembly includes an output shaft (42) and several roller assemblies (41) are equally spaced around the output shaft (42); the cam (5) includes an input shaft (51) and a tooth profile (52) located in the middle section of the input shaft (51) and rotating coaxially; the middle section of the input shaft (51) is reduced in diameter from both ends of the axial direction towards the center; support frames are fixedly installed at both ends of the top of the base (6); the two ends of the cam (5) are rotatably connected through the corresponding support frames; The protective cover (2) is equipped with a drive assembly; the drive assembly includes a second motor (8); the output end of the second motor (8) is connected to one end of the cam (5) to drive the cam (5) to perform reciprocating rotational motion; The roller assembly (41) also includes a roller bushing (411); the tooth profile (52) is helically disposed on the outer periphery of the input shaft (51) and forms a number of space intervals; the space intervals are used to support the roller bushing (411); the tooth profile (52) has tooth surfaces that are oppositely opposite on both sides; the tooth surfaces abut against the outer wall of the roller bushing (411) of the roller assembly (41); The outer wall of the roller bushing (411) abuts against the tooth surface. As the output shaft (42) rotates, the roller bushing (411) slides along the tooth surface in a point-to-line contact state. The roller bushing (411) is rotated and sleeved on the outer periphery of the roller core (412).

5. The CNC rotary table for arc-shaped cam grinding according to claim 1, characterized in that: The braking assembly (3) includes a first motor, a support base and a brake lever; the first motor is fixedly connected to the side seat (7) through the support base; the output end of the first motor is fixedly connected to one end of the brake lever to drive the brake lever to reciprocate; the central axis of the brake lever is set parallel to the horizontal central axis of the cam (5); the distance between the central axis of the brake lever and the horizontal central axis of the cam (5) is the same as the distance between the center of the output shaft (42) and the horizontal central axis of the cam (5).

6. The CNC rotary table for arc-shaped cam grinding according to claim 2, characterized in that: The adjusting rod (441) is slidably connected to the upper fixed seat (443), which is fixedly set at the upper end of the channel of the roller shaft core (412); the lower fixed seat (445) has a receiving cavity inside, and a second elastic element is embedded in the receiving cavity; the adjusting rod (441) passes through the second elastic element and is fixedly connected to the second elastic element.

7. The CNC rotary table for arc-shaped cam grinding according to claim 2, characterized in that: The end of the adjusting rod (441) away from the upper fixed seat (443) is conical; a plug is fixedly provided at the end of the adjusting rod (441) away from the upper fixed seat (443); the plug includes a plug column (4411) and a plug block (4412); the plug column (4411) is conical, and the cone tip of the plug column (4411) is fixedly connected to the cone tip of the adjusting rod (441); the end of the plug column (4411) away from the adjusting rod (441) is fixedly connected to the end of the plug block (4412); the outer diameter of the plug block (4412) is larger than the diameter of the through hole (4321).

8. The CNC rotary table for arc-shaped cam grinding according to claim 1, characterized in that: A third elastic element is fixedly provided between the roller shaft core (412) and the roller bushing (411) to alleviate the impact or vibration generated between the roller bushing (411) and the tooth profile (52).

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