Sealing structure of main shaft system of grinding machine

Abstract

The utility model provides a grinding machine main shaft system sealing structure which comprises a lower fixed disc seat, a lower fixed disc is arranged above the lower fixed disc seat, a second cover plate is further arranged between the top face of the lower fixed disc seat and the lower fixed disc, the second cover plate is a right trapezoid block, and the second cover plate is installed in the lower fixed disc seat in an embedded mode. The inclined plane of the second cover plate and the inclined plane of the lower fixed disc seat are coplanar; a sun gear connecting sleeve is arranged on a main shaft of the lower fixed disc seat, an annular first groove is formed in the sun gear connecting sleeve, a sealing cover assembly is arranged in the first groove, and an outer ring of the sealing cover assembly is in contact with the sun gear connecting sleeve through a sealing ring. The boss of the lower fixed disc seat sinks and is processed into the concave hole, the upper surface of the second cover plate is processed into the inclined surface which is consistent with the inclination of the upper surface of the lower fixed disc seat, and the upper surface is smooth after the lower fixed disc seat is connected with the cover plate, so that grinding mortar and grinding liquid can be smoothly discharged; as the upper surface of the sealing cover assembly is higher than the surface of the lower fixed disc, the problem of leakage of grinding fluid in the spindle system is thoroughly solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field, concretely relates to a grinding machine main shaft system sealing structure. BACKGROUND

[0002] The prior art numerical control double-sided grinding machine main shaft system sealing structure, reference Figure 1 , the main shaft adopts the sealing cover 5 and is fixed on the lower fixed disc seat 3, and clearance fit is formed between the sun wheel connecting sleeve 4, thereby preventing the grinding liquid from entering the main shaft system, at the same time, the lower fixed disc seat 3 is provided with process through holes, bosses and the first cover plate 2 due to assembly requirement, since the grinding machine in the grinding process, the sealing cover 5 is fixed, the sun wheel connecting sleeve 4 rotates, this structure when the lower fixed disc seat 3 and the lower fixed disc 1 run, since the first cover plate 2 protrudes from the inclined surface of the lower fixed disc seat 3, causes that mortar and grinding liquid are not discharged smoothly, the grinding mortar is easily accumulated on the lower fixed disc seat 3, and the grinding mortar is extremely inconvenient to clean, needs to be disassembled and cleaned, the following technical defects exist: the disassembly, installation and precision recovery of the lower fixed disc 1 are time-consuming and laborious, seriously affect the grinding efficiency of the customer, and the lower fixed disc 1 is very heavy, there is a safety risk in the disassembly process, therefore, in order to the processing efficiency of the user, the cleaning period is long, in the running process, the grinding liquid is accumulated to a certain degree along the clearance between the sun wheel connecting sleeve 4 and the sealing cover 5, then enters the flat key 8 along the joint surface of the lock nut and the lock washer 6 and the washer 7, and then flows downwards along the flat key 8, one way flows into the tapered roller bearing, another way flows along the lower left of the flat key 8, and the accumulated liquid flows into the large cross roller bearing after a certain degree, causes the damage of the large cross roller bearing, and the grinding liquid continues to flow downwards, which causes the damage of the small cross roller bearing, thereby causing the rust and damage of the bearing; after the damage of the grinding machine bearing, the maintenance of the equipment includes the cost of about 80000 yuan per machine of equipment return to factory, bearing procurement and labor, and the maintenance needs to spend 1 month, which causes serious loss to the customer and the company.

[0003] Therefore, how to design a grinding machine main shaft system sealing structure becomes a problem to be solved. CONTENT OF THE UTILITY MODEL

[0004] In view of the problems existing in the prior art, the utility model provides a grinding machine main shaft system sealing structure to solve at least one of the above technical problems.

[0005] The technical scheme of the utility model is as follows: a grinding machine main shaft system sealing structure, including the lower fixed disc seat that is provided with the lower fixed disc, the top surface of the lower fixed disc seat is further provided with the second cover plate between the lower fixed disc, the second cover plate is a right-angled trapezoidal block, the second cover plate is embedded and installed in the lower fixed disc seat, the inclined surface of the second cover plate is coplanar with the inclined surface of the lower fixed disc seat;

[0006] The sun gear connecting sleeve is provided on the main shaft of the lower fixed disc seat, the annular first recess is provided on the sun gear connecting sleeve, the sealing cover assembly is provided in the first recess, and the outer ring of the sealing cover assembly is in contact with the sun gear connecting sleeve through the sealing ring.

[0007] The upper surface of the second cover plate is processed into a slope, which is consistent with the slope of the upper surface of the lower fixed disc seat, and the upper surface of the lower fixed disc seat and the cover plate is smooth after being connected, so that the grinding mortar and the grinding liquid can be smoothly discharged; since the upper surface of the sealing cover assembly is higher than the lower fixed disc surface, the problem of leakage of the grinding liquid in the main shaft system is completely solved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is a schematic diagram of the internal structure of the prior art main shaft.

[0009] Figure 2 It is a schematic diagram of the internal structure of the prior art main shaft.

[0010] Figure 3 It is Figure 2 the A partial enlarged view.

[0011] Figure 4 It is a schematic diagram of the sealing cover assembly installation structure of the utility model.

[0012] Figure 5 It is a schematic diagram of the internal structure of the sun gear connecting sleeve of the utility model.

[0013] In the figure: 1. Lower fixed disc; 2. First cover plate; 3. Lower fixed disc seat; 4. Sun gear connecting sleeve; 5. Sealing cover; 6. Lock nut and lock washer; 7. Washer; 8. Flat key; 9. Second cover plate; 10. Sealing cover assembly; 401. First recess; 1001. Upper sealing cover; 1002. Second screw; 1003. Lower sealing cover. DETAILED DESCRIPTION

[0014] The utility model will be further described below in combination with the drawings.

[0015] Referring to Figures 1-5The structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the utility model, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope covered by the disclosed technical content. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the utility model.

[0016] Embodiment one, a grinding machine spindle system sealing structure, refer to Figure 2 , Embodiment one, a grinding machine spindle system sealing structure, refer to Figure 5 , including the lower dead plate seat 3 provided with the lower dead plate 1, the top surface of the lower dead plate seat 3 and the lower dead plate 1 are also provided with the second cover plate 9, the second cover plate 9 is a right trapezoidal block, the second cover plate 9 is embedded and installed in the lower dead plate seat 3, the inclined surface of the second cover plate 9 is coplanar with the inclined surface of the lower dead plate seat 3;

[0017] The sun gear connecting sleeve 4 is arranged on the spindle of the lower dead plate seat 3, the annular first groove 401 is arranged on the sun gear connecting sleeve 4, the sealing cover assembly 10 is arranged in the first groove 401, the outer circle of the sealing cover assembly 10 is in contact with the sun gear connecting sleeve 4 through the sealing ring, and the upper surface of the sealing cover assembly 10 is higher than the surface of the lower dead plate 1. The lower dead plate seat boss is sunken, a concave hole is processed, the upper surface of the second cover plate is processed into an inclined surface, the inclination of the upper surface of the lower dead plate seat and the cover plate is consistent, and the upper surface of the lower dead plate seat and the cover plate is smooth after being connected, so that the grinding mortar and the grinding liquid can be smoothly discharged. Since the upper surface of the sealing cover assembly is higher than the surface of the lower dead plate, the problem of leakage of the grinding liquid in the spindle system is completely solved. The grinding machine spindle system sealing structure starts from two aspects of the source of the grinding liquid entering the spindle system, is improved synchronously, completely solves the problem that the grinding liquid of the grinding machine enters the spindle system to cause the bearing to rust and be damaged, and has been practically applied in production.

[0018] The embodiment two, on the basis of the embodiment one, the inclined surface both ends of the second cover plate 9 are provided with stepped holes respectively, the top surface of the lower die plate seat 3 is provided with a first threaded counterbore at the corresponding position of the stepped hole, a first screw is arranged in the stepped hole, the first screw is a internal hexagonal head screw, and the threaded section of the first screw is screwed with the first threaded counterbore. The utility model discloses a stepped hole is arranged at the both ends of the inclined surface of the second cover plate, a first threaded counterbore is arranged at the corresponding position of the top surface of the lower die plate seat, the cover plate and the lower die plate seat are connected through the first screw, the first screw head upper groove and the cooperation gap are coated with silica gel after the first screw is connected through the internal hexagonal head screw, and the upper surface of the lower die plate seat and the cover plate is smooth after being connected, so that the smooth discharge of the grinding mortar and the grinding liquid can be ensured.

[0019] The embodiment three, on the basis of the embodiment one, referring to Figure 4 The sealing cover assembly 10 comprises an upper sealing cover 1001, and the upper sealing cover 1001 is connected with a lower sealing cover 1003 through a plurality of second screws 1002 which are uniformly distributed around the circumference. The utility model discloses that the upper sealing cover is connected with the lower sealing cover through a plurality of second screws which are uniformly distributed around the circumference, and the structure design is a combined part, so that the technical problems that the sealing cover needs to be installed first, then the locking nut and the lock washer are installed, and the locking nut and the lock washer are difficult to install, especially the lock washer cannot be installed (one side of the lock washer needs to be clamped into the groove in the locking nut) are solved.

[0020] The embodiment four, on the basis of the embodiment three, referring to Figure 3 The top surface of the upper sealing cover 1001 is 9mm higher than the top surface of the lower die plate 1. The utility model discloses that the top surface of the upper sealing cover is 9mm higher than the top surface of the lower die plate, so that the problem that the grinding liquid leaks in the main shaft system is completely solved.

[0021] The embodiment five, on the basis of the embodiment three, the upper sealing cover 1001 is a first cylinder structure with an open top surface, a first through hole is arranged at the bottom surface center of the first cylinder structure, a plurality of second screws 1002 are located outside the first through hole of the first cylinder structure, and the second screw 1002 is an internal hexagonal head screw. The upper sealing cover of the utility model adopts the first cylinder structure with an open top surface, a plurality of second screws are arranged outside the first through hole of the first cylinder structure, the lower sealing cover is connected through the second screw to form a combined part, and the technical problems that the sealing cover needs to be installed first, then the locking nut and the lock washer are installed, and the locking nut and the lock washer are difficult to install are solved.

[0022] In the embodiment six, the lower sealing cover 1003 is a second cylinder structure with an open top surface, a second through hole is arranged at the center of the bottom surface of the second cylinder structure, and a plurality of second threaded holes are arranged on the top surface of the second cylinder structure and are uniformly distributed around the circumference, and the threaded section of the second screw 1002 is screwed with the second threaded holes.

[0023] In the embodiment seven, a second groove is arranged on the outer ring of the upper part of the lower sealing cover 1003, and the sealing ring is arranged in the second groove.

[0024] In the specific implementation, during the assembly, the lower sealing cover 1003 is first installed, then the locking nut and the lock washer 6 are installed, the lock washer is clamped into the groove of the locking nut, then the upper sealing cover 1001 and the lower sealing cover 1003 are connected by the second screw 1002, and finally the sun gear connecting sleeve 4 and other components are installed.

[0025] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A grinding machine spindle system sealing structure, comprising a lower dead plate seat (3) provided with a lower dead plate (1) above, characterized in that: The top surface of the lower tray seat (3) and the lower tray (1) are further provided with a second cover plate (9), the second cover plate (9) is a right trapezoidal block, the second cover plate (9) is embedded and installed in the lower tray seat (3), the inclined surface of the second cover plate (9) is coplanar with the inclined surface of the lower tray seat (3); The main shaft of the lower tray seat (3) is provided with a sun gear connecting sleeve (4), the sun gear connecting sleeve (4) is provided with an annular first groove (401), the first groove (401) is provided with a sealing cover assembly (10), the outer circle of the sealing cover assembly (10) is in contact with the sun gear connecting sleeve (4) through a sealing ring, and the upper surface of the sealing cover assembly (10) is higher than the surface of the lower tray (1).

2. A grinder spindle system seal as defined in claim 1, wherein: The inclined surface of the second cover plate (9) is provided with a stepped hole at both ends, the top surface of the lower tray seat (3) is provided with a first threaded counterbore at the corresponding position of the stepped hole, and the first threaded counterbore is provided with a first screw.

3. The grinder spindle system seal according to claim 1, wherein: The sealing cover assembly (10) comprises an upper sealing cover (1001), and the upper sealing cover (1001) is connected with a lower sealing cover (1003) through a plurality of second screws (1002) uniformly distributed around the circumference.

4. A grinder spindle system seal as claimed in claim 3, wherein: The top surface of the upper sealing cover (1001) is 9mm higher than the top surface of the lower tray (1).

5. The grinder spindle system seal of claim 3, wherein: The upper sealing cover (1001) is a first cylinder structure with an open top surface, the bottom surface of the first cylinder structure is provided with a first through hole, and a plurality of second screws (1002) are located outside the first through hole of the first cylinder structure.

6. A grinder spindle system seal as claimed in claim 5, wherein: The lower sealing cover (1003) is a second cylinder structure with an open top surface, the bottom surface of the second cylinder structure is provided with a second through hole, the top surface of the second cylinder structure is provided with a plurality of second threaded counterbores uniformly distributed around the circumference, and the threaded section of the second screw (1002) is screwed with the second threaded counterbores.

7. A grinder spindle system seal as defined in claim 6 wherein: The upper part of the lower sealing cover (1003) is provided with a second groove, and the sealing ring is located in the second groove.

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