Lathe capable of changing grinding machine and modification method
By installing a coolant tank and dry ice cooling system on the lathe, the problem of insufficient cooling system when the lathe is converted into a grinder is solved, and effective cooling and processing accuracy are guaranteed for the grinding process.
Patent Information
- Application Number
- CN202510456682.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-12
- Publication Date
- 2025-06-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the lathe is converted into a grinder, the cooling system cannot meet the needs of grinding operations, resulting in the local temperature accumulation of workpieces that will affect the processing accuracy.
A lathe for a transformable grinder is designed. By fixedly connecting the coolant tank on the upper surface of the lathe main body, and setting a main liquid tank and a cooling chamber inside the coolant tank, the reaction between dry ice and coolant is used to quickly reduce the coolant temperature in the cooling chamber to meet the cooling needs of the grinding process.
It effectively reduces the local temperature of the workpiece during grinding, ensures processing accuracy, and ensures continuous cooling effect by adding dry ice cubes regularly.
Smart Images
Figure CN120155846A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of machining equipment, and specifically to a lathe that can be converted into a grinding machine and a conversion method thereof. Background Art
[0002] A lathe is an important piece of equipment in machining, mainly used for the cutting machining of rotating workpieces. It fixes the workpiece on the spindle and rotates it, while using a tool for cutting operations to achieve the machining of the workpiece. With the continuous development of industrial production, as a key machining equipment, the lathe may face elimination due to technological upgrading or equipment aging after long-term operation. However, many old lathes still have quite stable structures and potential for performance improvement.
[0003] Many products need to be ground after turning, which requires purchasing a dedicated grinding machine. To save costs, some enterprises choose to convert a lathe into a grinding machine to meet their processing needs. However, a large amount of heat is generated during the grinding process, and an effective cooling system is required to prevent the workpiece and the grinding wheel from overheating. The cooling system of a lathe is usually not sufficient to meet the grinding requirements, which may cause the local temperature of the workpiece to accumulate too high, leading to softening or local melting of the workpiece material, thereby causing changes in shape and size and resulting in a decrease in machining accuracy. Summary of the Invention
[0004] (I) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the present invention provides a lathe that can be converted into a grinding machine and a conversion method thereof, solving the problem that the cooling system cannot meet the grinding operation requirements in the grinding machine converted from a lathe.
[0006] (II) Technical Solutions
[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lathe that can be converted into a grinding machine, comprising a lathe body and a grinding assembly, the upper surface of the lathe body is fixedly connected to a coolant tank, the interior of the coolant tank is fixedly connected to a partition, a main liquid tank and a cooling bin are provided inside the coolant tank, the main liquid tank and the cooling bin are respectively located on both sides of the partition, the cooling bin and the coolant outflow pipe of the lathe body are connected, the upper surface of the lathe body is fixedly connected to a support leg, the upper surface of the support leg is fixedly connected to an insulation box, the upper surface of the insulation box is provided with a cover plate, and the lower surface of the insulation box is fixedly connected to a limit plate , a through slide groove is provided on the side surface of the limit plate, a through hole is provided on the outer surface of the incubator near one side edge, there are two limit plates, dry ice is provided between the two limit plates, a propulsion mechanism is provided at one end of the through hole between the two limit plates away from the incubator, a second electric push rod is fixedly connected to the lower surface of the interior of the incubator near the through hole, an output end of the second electric push rod is fixedly connected to the push plate, a position monitoring mechanism is provided on the lower surface of the interior of the incubator near the position of the second electric push rod, and a positioning plate is fixedly connected to the side surface of the interior of the incubator away from the propulsion mechanism. The coolant tank is provided to facilitate the storage of coolant, the partition is provided to facilitate the separation of the inside of the coolant tank into the main liquid tank and the cooling chamber, the insulation box and the cover are provided to facilitate the maintenance of the interior at a lower temperature to prevent the dry ice from sublimating quickly, the limit plate is provided to facilitate the restriction of the movement trajectory of the dry ice, the second electric push rod and the push plate are provided to facilitate the push out of the dry ice corresponding to the through-opening of the insulation box, the position monitoring mechanism is provided to facilitate the control of the alarm light to light up when the dry ice between the two limit plates is about to be pushed out, thereby warning the staff and reminding them to add dry ice, and the propulsion mechanism is provided to facilitate the push of the dry ice between the two limit plates.
[0008] Preferably, the propulsion mechanism includes a telescopic tube, a second spring, a propulsion rod, a moving plate and a driving shaft, the moving plate is provided with protruding blocks sliding in the slide grooves of the limit plate on both sides, the propulsion rod is fixedly connected to the protruding blocks on the side of the moving plate close to the position monitoring mechanism, and one end of the propulsion rod close to the position monitoring mechanism is an inclined surface. The purpose of setting one end of the propulsion rod as an inclined surface is to facilitate the movement of the sliding shaft when the inclined surface contacts the sliding shaft, thereby making the contact plate contact the contact sensor.
[0009] Preferably, the telescopic tube is fixedly connected to the inner side surface of the insulated box, the other end of the telescopic tube is fixedly connected to the side surface of the movable plate, the second spring is fixedly connected between the inner side surface of the insulated box and the side surface of the movable plate, the second spring surrounds the outer side of the telescopic tube, and the driving shaft is fixedly connected to the side surface of the movable plate away from the telescopic tube. The second spring is provided to facilitate the movement of the movable plate, thereby driving the movement of the dry ice blocks.
[0010] Preferably, the position monitoring mechanism includes a first fixing plate, a sliding shaft, a first spring, a baffle, a contact disc, a contact sensor, and a second fixing plate. The first fixing plate, the baffle, and the second fixing plate are fixedly connected to the lower surface inside the insulation box. A through hole is provided on the side surface of the first fixing plate. The baffle is provided to facilitate restricting the position of the contact disc when the push rod does not contact the sliding shaft, thereby restricting the position of the sliding shaft.
[0011] Preferably, the sliding shaft is slidably connected in the through hole of the first fixing plate. The contact disc is fixedly connected to the side surface of the sliding shaft close to the second fixing plate. The contact sensor is fixedly connected to the side surface of the second fixing plate close to the contact disc. The contact sensor is provided to facilitate sending a signal to an external alarm light when contacting the contact disc, and the alarm light will light up after receiving the signal.
[0012] Preferably, the first spring is fixedly connected between the first fixing plate and the contact disc. The first spring is wound around the outer side of the cylindrical surface of the sliding shaft. The baffle is between the first fixing plate and the contact disc.
[0013] Preferably, a sliding-out channel is provided on the outer surface of the insulation box. The sliding-out channel is below the through opening of the insulation box. A first electric push rod is fixedly connected to the side surface of the insulation box where the through opening is located. The output end of the first electric push rod is fixedly connected to a blocking block. An alarm light is fixedly connected to the side surface of the insulation box. The alarm light is electrically connected to the contact sensor. The first electric push rod is provided to facilitate driving the blocking block to move. The blocking block is provided to facilitate blocking the through opening of the insulation box when it is not necessary to push the dry ice blocks downward, so as to keep the inside of the insulation box in a low-temperature state.
[0014] Preferably, an exhaust pipe is provided on the upper surface of the area where the cooling chamber of the coolant tank is located. A through groove is provided on the upper surface of the area where the cooling chamber of the coolant tank is located. The through groove of the coolant tank is directly below the outflow end of the sliding-out channel. A water pump is fixedly connected to the upper surface of the lathe body. The water pipe connected to the input end of the water pump leads into the lathe body. The water pipe connected to the output end of the water pump leads into the main liquid tank. The exhaust pipe is provided to facilitate discharging the carbon dioxide gas generated when the dry ice blocks react with the coolant in the cooling chamber to the open area outside, avoiding a large increase in the carbon dioxide gas concentration in the workshop. The water pump is provided to facilitate pumping the used coolant inside the lathe body into the coolant tank.
[0015] Preferably, a first fixed shaft is fixedly connected to the side surface of the through groove of the coolant tank. A flip cover is rotatably connected to the cylindrical surface of the first fixed shaft. A limit frame and a third fixing plate are fixedly connected to the upper surface of the coolant tank. A second fixed shaft is fixedly connected to the side surface of the third fixing plate. An elastic pull rope is fixedly connected to the upper surface of the flip cover. The other end of the elastic pull rope is fixedly connected to the upper surface of the coolant tank. The elastic pull rope contacts the top end of the cylindrical surface of the second fixed shaft. The elastic pull rope is provided to facilitate pulling the flip cover upward. The limit frame is provided to facilitate restricting the position of the flip cover. The flip cover is provided to facilitate blocking the through groove on the upper surface of the area where the cooling chamber of the coolant tank is located for most of the time, preventing carbon dioxide gas from flowing out of this groove.
[0016] A modification method for a lathe that can be converted into a grinding machine includes the following specific modification steps:
[0017] S1. Remove the tool rest on the lathe main body and clean and maintain the tool rest.
[0018] S2. Clean the saddle on the lathe main body and then install the grinding assembly.
[0019] S3. Fix the support legs to the lathe main body with screws, thereby completing the integration of the components above the support legs on the lathe main body.
[0020] Working principle: After installing components such as the grinding assembly and the insulation box, during the grinding process, the propulsion mechanism pushes the dry ice blocks onto the limit plate. The first electric push rod drives the blocking block to move, exposing the through port of the insulation box. Subsequently, the second electric push rod drives the push plate to push out one dry ice block in contact with the limit plate. After the dry ice block is pushed out, the second electric push rod drives the push plate back to the initial position. Then the propulsion mechanism pushes the remaining dry ice blocks until a dry ice block contacts the limit plate. After the dry ice block falls out, the first electric push rod drives the blocking block back to the initial position. The pushed-out dry ice block will fall into the sliding channel and then onto the flip cover below. Under the action of its own gravity, the dry ice block will drive the flip cover to rotate downward, allowing the dry ice block to fall into the cooling chamber below. Subsequently, the flip cover will be pulled back by the elasticity of the elastic pull rope until it returns to the initial position. The dry ice block falling into the cooling chamber will react with the coolant in the cooling chamber and quickly sublimate, rapidly reducing the temperature of the coolant in the cooling chamber. The cooled coolant can meet the cooling requirements for the grinding process, thus ensuring the grinding quality. Regularly put dry ice blocks into the cooling chamber to ensure the continuous heat dissipation requirements during the grinding process. Beneficial effects
[0021] The present invention provides a lathe that can be converted into a grinding machine and a modification method. It has the following beneficial effects: 1. When the equipment is converted into a grinding machine, dry ice blocks regularly put in will cool the coolant in the cooling chamber, enabling the coolant in the cooling chamber to meet the cooling requirements during the grinding process, thus ensuring the grinding quality.
[0022] 2. When the dry ice blocks in the insulation box are about to be completely pushed out, the push rod of the pushing mechanism will contact and push the sliding shaft of the position monitoring mechanism to move, making the contact disc contact the contact sensor. Subsequently, the contact sensor will transmit a signal to the alarm light. After receiving the signal, the alarm light will light up to warn the staff, reminding the staff to add dry ice blocks in time, thus avoiding the situation where the coolant in the cooling chamber cannot be cooled continuously after all the dry ice blocks in the insulation box are pushed out.
[0023] 3. The carbon dioxide gas generated by the reaction of dry ice blocks and the coolant is discharged from the exhaust pipe to the external air, avoiding the risk of asphyxiation caused by the accumulation of carbon dioxide in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 2 It is a schematic diagram of the upper surface structure of the coolant tank of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 3 It is a schematic diagram of the internal sectional structure of the coolant tank of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 4 It is a schematic diagram of the external parts of the insulation box of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 5 It is a schematic diagram of the internal structure of the insulation box of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 6 It is a schematic diagram of the push rod and the moving plate of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 7 It is a schematic diagram of the limit plate of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 8 It is a schematic diagram of the grinding assembly of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 9 It is an enlarged view of the partial structure at part A of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 10 It is an enlarged view of the partial structure at part B of a lathe that can be converted into a grinding machine proposed by the present invention; Figure 11 It is an enlarged view of the partial structure at part C of a lathe that can be converted into a grinding machine proposed by the present invention.
[0025] Among them, 1. Lathe main body; 2. Cooling liquid tank; 201. Main liquid tank; 202. Cooling bin; 3. Exhaust pipe; 4. Heat preservation box; 5. Cover plate; 6. Water pump; 7. Position monitoring mechanism; 701. First fixing plate; 702. Sliding shaft; 703. First spring; 704. Baffle plate; 705. Contact disk; 706. Contact sensor; 707. Second fixing plate; 8. Propulsion mechanism; 801. Telescopic pipe; 802. Second spring; 803. Propulsion rod; 804. Moving plate; 805. Propulsion shaft; 9. Limiting frame; 10. Flap; 11. Partition board; 12. Leg; 13. Alarm lamp; 14. Sliding out channel; 15. Blocking block; 16. First electric push rod; 17. Limiting plate; 18. Dry ice block; 19. Positioning plate; 20. Second electric push rod; 21. Pushing plate; 22. Grinding assembly; 23. First fixed shaft; 24. Third fixing plate; 25. Second fixed shaft; 26. Elastic pull rope. Detailed implementation mode
[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0027] Embodiment: As Figures 1-11As shown in the figure, an embodiment of the present invention provides a lathe that can be converted into a grinding machine, including a lathe main body 1 and a grinding assembly 22. A coolant tank 2 is fixedly connected to the upper surface of the lathe main body 1. A partition 11 is fixedly connected inside the coolant tank 2. A main liquid tank 201 and a cooling chamber 202 are arranged inside the coolant tank 2. The main liquid tank 201 and the cooling chamber 202 are respectively on both sides of the partition 11. The cooling chamber 202 is communicated with the coolant outflow pipe of the lathe main body 1. Legs 12 are fixedly connected to the upper surface of the lathe main body 1. A heat preservation box 4 is fixedly connected to the upper surface of the legs 12. A cover plate 5 is arranged on the upper surface of the heat preservation box 4. A limiting plate 17 is fixedly connected to the lower surface inside the heat preservation box 4. A through chute is arranged on the side surface of the limiting plate 17. A through port is arranged on the outer side surface of the heat preservation box 4 near one edge. The number of the limiting plates 17 is two. Dry ice blocks 18 are arranged between the two limiting plates 17. A propulsion mechanism 8 is arranged at one end between the two limiting plates 17 away from the through port of the heat preservation box 4. A second electric push rod 20 is fixedly connected to the lower surface inside the heat preservation box 4 near the through port. The output end of the second electric push rod 20 is fixedly connected to a push plate 21. A position monitoring mechanism 7 is arranged at the position of the lower surface inside the heat preservation box 4 near the second electric push rod 20. A positioning plate 19 is fixedly connected to the side surface inside the heat preservation box 4 away from the propulsion mechanism 8. The bottom installation structure of the grinding assembly 22 is the same as the bottom installation structure of the tool rest of the lathe main body 1. The heat preservation box 4 and the cover plate 5 are both made of heat preservation materials. During the turning process, the coolant in the cooling chamber 202 does not need to be cooled. After the water pump 6 pumps out the used coolant inside the lathe main body 1, it will be injected into the main liquid tank 201, and then flow over the partition 11 into the cooling chamber 202. The space of the cooling chamber 202 is small, which makes the cooling effect of the dry ice blocks 18 on the coolant in the cooling chamber 202 better.
[0028] The position monitoring mechanism 7 includes a first fixing plate 701, a sliding shaft 702, a first spring 703, a baffle 704, a contact disc 705, a contact sensor 706 and a second fixing plate 707. The first fixing plate 701, the baffle 704 and the second fixing plate 707 are fixedly connected to the lower surface inside the heat preservation box 4. A through sliding hole is arranged on the side surface of the first fixing plate 701. The first spring 703 is fixedly connected between the first fixing plate 701 and the contact disc 705. The first spring 703 is wound around the outer side of the cylindrical surface of the sliding shaft 702. The baffle 704 is between the first fixing plate 701 and the contact disc 705. The first spring 703 is in a tension state.
[0029] The sliding shaft 702 is slidably connected in the through sliding hole of the first fixing plate 701. The contact disc 705 is fixedly connected to the surface of the sliding shaft 702 on the side close to the second fixing plate 707. The contact sensor 706 is fixedly connected to the surface of the second fixing plate 707 on the side close to the contact disc 705. When the push rod 803 of the propulsion mechanism 8 moves to the position of the position monitoring mechanism 7, the inclined surface of the push rod 803 will contact the sliding shaft 702 and push the sliding shaft 702 to move when the push rod 803 moves, thereby driving the contact disc 705 to move, and further making the contact disc 705 contact the contact sensor 706. The model of the contact sensor 706 is 1-SP4MC3MR of HBM. When the push rod 803 and the sliding shaft 702 are not in contact, the first spring 703 will pull the contact disc 705 to contact the baffle 704 under the action of its own tensile force.
[0030] An exhaust pipe 3 is provided on the upper surface of the area where the cooling chamber 202 of the coolant tank 2 is located. A through groove is provided on the upper surface of the area where the cooling chamber 202 of the coolant tank 2 is located. The through groove of the coolant tank 2 is directly below the outflow end of the sliding channel 14. A water pump 6 is fixedly connected to the upper surface of the lathe main body 1. The water pipe connected to the input end of the water pump 6 leads into the interior of the lathe main body 1, and the water pipe connected to the output end of the water pump 6 leads into the main liquid tank 201. The side surface of the through groove of the coolant tank 2 is fixedly connected to a first fixed shaft 23. The cylindrical surface of the first fixed shaft 23 is rotatably connected to a flip cover 10. The upper surface of the coolant tank 2 is fixedly connected to a limit frame 9 and a third fixing plate 24. The side surface of the third fixing plate 24 is fixedly connected to a second fixed shaft 25. The upper surface of the flip cover 10 is fixedly connected to an elastic pull rope 26. The other end of the elastic pull rope 26 is fixedly connected to the upper surface of the coolant tank 2. The elastic pull rope 26 contacts the top end of the cylindrical surface of the second fixed shaft 25. The flip cover 10 is made of a light material. The elastic pull rope 26 is in a tensioned state and pulls the flip cover 10 upward by its own tensile force until the flip cover 10 contacts the limit frame 9. The exhaust pipe 3 will be connected to a pipe leading to the outside.
[0031] The propulsion mechanism 8 includes a telescopic tube 801, a second spring 802, a push rod 803, a moving plate 804 and a push shaft 805. Protruding blocks are provided on both sides of the moving plate 804 and slide in the chute of the limit plate 17. The push rod 803 is fixedly connected to the protruding block on the side of the moving plate 804 close to the position monitoring mechanism 7. One end of the push rod 803 close to the position monitoring mechanism 7 is an inclined surface. The telescopic tube 801 is fixedly connected to the inner side surface of the heat preservation box 4. The other end of the telescopic tube 801 is fixedly connected to the side surface of the moving plate 804. The second spring 802 is fixedly connected between the inner side surface of the heat preservation box 4 and the side surface of the moving plate 804. The second spring 802 surrounds the outside of the telescopic tube 801. The push shaft 805 is fixedly connected to the surface of the moving plate 804 away from the telescopic tube 801. The second spring 802 is in a compressed state and pushes the dry ice block 18 to move by its own elastic force.
[0032] A sliding-out channel 14 is provided on the outer surface of the incubator 4. The sliding-out channel 14 is below the through hole of the incubator 4. A first electric push rod 16 is fixedly connected to the side surface of the incubator 4 where the through hole is located. A blocking block 15 is fixedly connected to the output end of the first electric push rod 16. An alarm lamp 13 is fixedly connected to the side surface of the incubator 4. The alarm lamp 13 is electrically connected to the contact sensor 706.
[0033] A modification method for a lathe that can be converted into a grinding machine includes the following specific modification steps: S1. Remove the tool rest on the lathe main body 1 and clean and maintain the tool rest. S2. Clean the saddle on the lathe main body 1, and then install the grinding assembly 22. S3. Fix the support leg 12 to the lathe main body 1 by screws, so as to complete the integration of the components above the support leg 12 on the lathe main body 1.
[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A lathe that can be converted into a grinding machine, comprising a lathe body (1) and a grinding assembly (22), characterized in that: The upper surface of the lathe body (1) is fixedly connected to a coolant tank (2), the interior of the coolant tank (2) is fixedly connected to a partition (11), a main liquid tank (201) and a cooling bin (202) are provided inside the coolant tank (2), the main liquid tank (201) and the cooling bin (202) are respectively located on both sides of the partition (11), the cooling bin (202) and the coolant outflow pipe of the lathe body (1) are in communication, the upper surface of the lathe body (1) is fixedly connected to a support leg (12), the upper surface of the support leg (12) is fixedly connected to an insulation box (4), the upper surface of the insulation box (4) is provided with a cover plate (5), the lower surface of the interior of the insulation box (4) is fixedly connected to a limit plate (17), the side surface of the limit plate (17) is provided with a through hole The heat preservation box (4) has a through opening on its outer surface near one side edge, two limit plates (17) are provided, a dry ice block (18) is provided between the two limit plates (17), a propulsion mechanism (8) is provided at one end of the through opening between the two limit plates (17) away from the heat preservation box (4), a second electric push rod (20) is fixedly connected to the lower surface of the interior of the heat preservation box (4) near the through opening, an output end of the second electric push rod (20) is fixedly connected to the push plate (21), a position monitoring mechanism (7) is provided on the lower surface of the interior of the heat preservation box (4) near the position of the second electric push rod (20), and a positioning plate (19) is fixedly connected to the side surface of the interior of the heat preservation box (4) away from the propulsion mechanism (8).
2. The lathe convertible into a grinding machine according to claim 1, characterized in that: The propulsion mechanism (8) comprises a telescopic tube (801), a second spring (802), a propulsion rod (803), a movable plate (804) and a driving shaft (805); protruding blocks that slide in the slide grooves of the limiting plate (17) are arranged on both sides of the movable plate (804); the propulsion rod (803) is fixedly connected to the protruding block on the side of the movable plate (804) close to the position monitoring mechanism (7); and one end of the propulsion rod (803) close to the position monitoring mechanism (7) is an inclined surface.
3. The lathe convertible into a grinding machine according to claim 2, characterized in that: The telescopic tube (801) is fixedly connected to the inner side surface of the heat preservation box (4), the other end of the telescopic tube (801) is fixedly connected to the side surface of the movable plate (804), the second spring (802) is fixedly connected between the inner side surface of the heat preservation box (4) and the side surface of the movable plate (804), the second spring (802) surrounds the outer side of the telescopic tube (801), and the driving shaft (805) is fixedly connected to a side surface of the movable plate (804) away from the telescopic tube (801).
4. The lathe convertible into a grinding machine according to claim 3, characterized in that: The position monitoring mechanism (7) comprises a first fixed plate (701), a sliding shaft (702), a first spring (703), a baffle (704), a contact disc (705), a contact sensor (706) and a second fixed plate (707); the first fixed plate (701), the baffle (704) and the second fixed plate (707) are fixedly connected to the lower surface of the interior of the thermal insulation box (4); and a through sliding hole is provided on the side surface of the first fixed plate (701).
5. The lathe convertible into a grinding machine according to claim 4, characterized in that: The sliding shaft (702) is slidably connected in a through sliding hole of the first fixed plate (701), the contact plate (705) is fixedly connected to a side surface of the sliding shaft (702) close to the second fixed plate (707), and the contact sensor (706) is fixedly connected to a side surface of the second fixed plate (707) close to the contact plate (705).
6. The lathe convertible into a grinding machine according to claim 4, characterized in that: The first spring (703) is fixedly connected between the first fixed plate (701) and the contact plate (705), the first spring (703) surrounds the outside of the cylindrical surface of the sliding shaft (702), and the baffle (704) is between the first fixed plate (701) and the contact plate (705).
7. The lathe convertible into a grinding machine according to claim 6, characterized in that: The outer surface of the thermal insulation box (4) is provided with a slide-out channel (14), the slide-out channel (14) is below the through-opening of the thermal insulation box (4), the side surface of the thermal insulation box (4) where the through-opening is located is fixedly connected to a first electric push rod (16), the output end of the first electric push rod (16) is fixedly connected to a blocking block (15), the side surface of the thermal insulation box (4) is fixedly connected to an alarm light (13), and the alarm light (13) is electrically connected to a contact sensor (706).
8. The lathe convertible into a grinding machine according to claim 7, characterized in that: An exhaust pipe (3) is provided on the upper surface of the area where the cooling bin (202) of the coolant tank (2) is located, and a through groove is provided on the upper surface of the area where the cooling bin (202) of the coolant tank (2) is located. The through groove of the coolant tank (2) is directly below the outflow end of the slide-out channel (14). A water pump (6) is fixedly connected to the upper surface of the lathe body (1), and a water pipe connected to the input end of the water pump (6) passes into the interior of the lathe body (1), and a water pipe connected to the output end of the water pump (6) passes into the main liquid tank (201).
9. The lathe convertible into a grinding machine according to claim 8, characterized in that: The side surface of the through groove of the coolant tank (2) is fixedly connected to the first fixed shaft (23), the cylindrical surface of the first fixed shaft (23) is rotatably connected to the flip cover (10), the upper surface of the coolant tank (2) is fixedly connected to the limit frame (9) and the third fixed plate (24), the side surface of the third fixed plate (24) is fixedly connected to the second fixed shaft (25), the upper surface of the flip cover (10) is fixedly connected to the elastic pull rope (26), the other end of the elastic pull rope (26) is fixedly connected to the upper surface of the coolant tank (2), and the elastic pull rope (26) is in contact with the top of the cylindrical surface of the second fixed shaft (25).
10. The modification method for a lathe that can be converted into a grinding machine according to claim 9 is characterized in that: The following specific modification steps are included: S1. Remove the tool holder on the lathe body (1) and clean and maintain the tool holder; S2. Cleaning the saddle on the lathe body (1), and then installing the grinding assembly (22); S3. Fix the support leg (12) to the lathe body (1) by means of screws, thereby completing the integration of the components above the support leg (12) to the lathe body (1).