Grinding wheel feeding and inner disc combined mechanism

Abstract

The grinding wheel feeding and inner disc combined mechanism comprises a grinding wheel up-down moving mechanism and an inner disc device, the grinding wheel up-down moving mechanism comprises an upper grinding wheel, a material disc, a spring, a countertop, an inner disc, a lower grinding wheel, a grinding wheel disc and a machine body, a sliding seat is arranged in the machine body, a sliding sleeve is arranged on the inner side of the sliding seat, and a disc is arranged on the lower side of the sliding sleeve. The inner disc device comprises an inner disc shaft, the inner disc shaft is arranged in the grinding wheel shaft, a plurality of long cylinders are installed at the lower end of the sliding seat, a bearing seat is arranged below the machine body, and the lower ends of the long cylinders are installed on the bearing seat. An upper bearing c, a spacer bush and a lower bearing b are sequentially arranged on the inner side of the bearing seat from top to bottom, and the upper bearing c and the lower bearing b are connected with a lead screw. The grinding device is reasonable in structure and has the advantages of being high in grinding precision, low in manufacturing cost and good in use stability.

Description

Technical Field

[0001] The invention relates to the technical field of metal cutting machine tools, in particular to a grinding wheel feeding and inner disc combined mechanism. Background Art

[0002] In the existing grinding wheel moving mechanism, the sliding pair, worm gear transmission mechanism, gear transmission mechanism and guide mechanism are designed separately. The disadvantages are that there are many mechanisms, many parts, complex structure, low transmission accuracy and high manufacturing cost. Secondly, the direction of the axial force in the existing grinding wheel up and down moving mechanism is not only not in the same line as the direction of the axial force of the grinding wheel, but also deviates too much. During heavy grinding, the grinding wheel disc on which the grinding wheel is installed will flip and deform, and the grinding wheel shaft will be greatly deformed by bending deflection. Such deformation will reduce the vertical accuracy between the grinding surface of the grinding wheel and the rotation center line of the grinding wheel shaft. That is, the upper and lower grinding wheel grinding surfaces grind parts in a non-parallel state, resulting in low height dimensional accuracy and poor stability of the ground parts. In view of the above problems, a solution is proposed below. Summary of the invention

[0003] The purpose of the present invention is to provide a grinding wheel feeding and inner disc combined mechanism, which has the advantages of high heavy grinding accuracy, low manufacturing cost and good use stability.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: A grinding wheel feeding and inner disc combined mechanism comprises a grinding wheel up and down moving mechanism and an inner disc device, wherein the grinding wheel up and down moving mechanism comprises an upper grinding wheel, a material disc, a spring, a table plate, an inner disc, a lower grinding wheel and a grinding wheel disc, wherein the lower grinding wheel is connected to the upper end of the grinding wheel disc by bolts, a plurality of through holes are arranged at the upper end of the material disc, and the spring is arranged in the through holes, the table plate is arranged at the outer side of the lower grinding wheel, the material disc is arranged at the upper end of the lower grinding wheel, the upper grinding wheel is arranged at the upper end of the spring, and the inner disc is arranged at the inner side of the lower grinding wheel, a body is arranged below the grinding wheel disc, a sliding seat is arranged in the center hole of the body, a sliding sleeve is arranged on the inner side of the sliding seat, a disc is arranged on the outer circle of the lower section of the sliding sleeve, an outer card is embedded at the lower side of the sliding sleeve, and the upper surface of the outer card is in contact with the disc for fixing The axial position of the fixed disc, the disc is provided with a lower eccentric hole, and the lower eccentric hole is connected with a guide cylinder through a nut, the sliding seat is provided with an upper eccentric hole, and the upper end of the guide cylinder is arranged in the upper eccentric hole through a clearance fit, an upper bearing b is arranged in the upper end hole of the sliding sleeve, a lower bearing a is arranged in the lower end hole of the sliding sleeve, a grinding wheel shaft is arranged on the upper bearing b and the lower bearing a, and the grinding wheel disc is connected to the upper end of the grinding wheel shaft through screws, an upper bearing a is arranged in the upper end hole of the grinding wheel shaft, a lower bearing c is arranged in the lower end hole of the grinding wheel shaft, a hole card is arranged on the lower end surface of the lower bearing, the inner disc device includes an inner disc shaft, the inner disc shaft is arranged on the upper bearing a and the lower bearing c, and the inner disc is connected to the upper end of the inner disc shaft through a flat key.

[0005] Preferably, a plurality of mounting holes are provided at the lower end of the sliding seat, and a long cylinder is installed in each of the mounting holes through a nut. A bearing seat is provided below the fuselage, and a plurality of lower end mounting holes are provided on the bearing seat. The lower ends of the plurality of long cylinders are respectively penetrated by lower end mounting holes and are installed in the lower end mounting holes through nuts. An upper bearing c, a spacer sleeve and a lower bearing b are sequentially provided on the inner side of the bearing seat from top to bottom. A pressure cover is connected to the lower end surface of the bearing seat through screws. A lead screw is connected to the upper bearing c and the lower bearing b. A motor is provided below the bearing seat, and the output shaft of the motor is fixedly connected to the lower end of the lead screw.

[0006] Preferably, a plurality of short cylinders are fixedly connected to the disc via nuts, the lower ends of the plurality of short cylinders are fixedly connected to a nut plate via nuts, a fixing nut and an adjusting nut are provided on the nut plate, and the fixing nut and the adjusting nut are respectively connected to the upper end of the lead screw via threads.

[0007] Preferably, a round pin is provided at the lower end of the inner disk shaft, and a supporting square rod is connected via the round pin, supporting bolts are respectively provided in the two end holes of the supporting square rod, and round nuts are respectively provided on the upper end surfaces of the two end holes of the supporting square rod, and fixing screws are provided on the round nuts, and the upper ends of several supporting bolts are respectively connected to supporting cylinders via threads, and a disc is passed through the upper end of the supporting cylinder, and is fixedly connected to the sliding seat via a nut.

[0008] Preferably, a pulley is provided on the outer diameter of the lower section of the grinding wheel shaft, and a stop washer and a connecting nut are also provided at the lower end surface of the pulley.

[0009] The technical features of the present invention have the following beneficial effects: 1. Since most of the mechanisms are composed of simple-shaped parts such as round rods, round sleeves, and square rods, the number of parts is small, so the manufacturing cost is low. 2. An inner disk device is set in the grinding wheel hole to meet the process requirements of the spring entering and exiting the grinding position. 3. The grinding wheel shaft axis centerline, the grinding wheel disc (equal thickness) centerline, the material disc centerline (full circle spring center), and the screw axis centerline in the grinding wheel up and down moving mechanism are designed to be collinear. When grinding, the axial force acting direction in the grinding wheel up and down moving mechanism is on the same line as the axial force direction of the grinding wheel grinding spring. The circumference of the grinding wheel disc is subjected to the same axial force, that is, the circumferential axial deformation is the same, the deformation direction is parallel to the screw axis, and the bending deflection deformation of the grinding wheel shaft tends to zero, that is, it is negligible. Such deformation will not reduce the vertical accuracy of the grinding wheel grinding surface and the rotation axis of the grinding wheel shaft. The parallel accuracy of the upper and lower grinding wheel grinding surfaces remains unchanged, that is, when re-grinding, the spring height consistency is good, which greatly improves the grinding productivity and economic benefits. The above-mentioned technical features 2 and 3 are combined to achieve the new technical feature of grinding high-precision springs even through heavy grinding without the need for coarse and fine grinding processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 It is a schematic diagram of the structure in the AA direction in the embodiment.

[0011] 1. Grinding wheel; 2. Material disc; 4. Spring; 5. Table top; 6. Inner disc; 7. Lower grinding wheel; 8. Grinding wheel disc; 9. Upper bearing a; 10. Inner disc shaft; 11. Upper bearing b; 12. Machine body; 13. Slide seat; 14. Sliding sleeve; 15. Grinding wheel shaft; 16. Long cylinder; 17. Guide cylinder; 18. Disc; 19. External clamp; 20. Lower bearing a; 22. Short cylinder; 23. Fixing nut; 24. Nut plate; 25. Adjusting nut; 26. Lead screw; 27. Bearing seat; 31. Pressure cover; 32. Lower bearing b; 33. Spacer; 34. Upper bearing c; 35. Round pin; 36. Hole card; 37. Lower bearing c; 38. Connecting nut; 39. Support square rod; 40. Support bolt; 41. Fixing screw; 43. Round nut; 44. Support cylinder. DETAILED DESCRIPTION

[0012] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0013] like Figure 1 to Figure 2As shown, a grinding wheel feeding and inner disc combined mechanism includes a grinding wheel up and down moving mechanism and an inner disc 6 device, the grinding wheel up and down moving mechanism includes an upper grinding wheel 1, a material disc 2, a spring 4, a table plate 5, an inner disc 6, a lower grinding wheel 7 and a grinding wheel disc 8, the lower grinding wheel 7 is connected to the upper end of the grinding wheel disc 8 by bolts, a plurality of through holes are arranged at the upper end of the material disc 2, and the spring 4 is arranged in the through holes, the table plate 5 is arranged on the outer side of the lower grinding wheel 7, the material disc 2 is arranged at the upper end of the lower grinding wheel 7, the upper grinding wheel 1 is arranged at the upper end of the spring 4, the inner disc 6 is arranged on the inner side of the lower grinding wheel 7, a body 12 is arranged below the grinding wheel disc 8, and a slide seat 13 is arranged in the center hole of the body 12, A sleeve 14 is provided on the inner side of the slide 13, and a disc 18 is provided on the outer circle of the lower section of the sleeve 14. An outer card 19 is embedded on the lower side of the sleeve 14, and the upper surface of the outer card 19 is fitted with the disc 18. The outer card 19 can be used to fix the axial position of the disc 18. A lower eccentric hole is provided on the disc 18, and a guide cylinder 17 is connected in the lower eccentric hole through a nut. An upper eccentric hole is provided on the slide 13, and the upper end of the guide cylinder 17 is arranged in the upper eccentric hole through a clearance fit. The guide cylinder 17 can limit the moving trajectory of the disc 18, so that the disc 18 can only move up and down, and the moving trajectory is straighter and more stable. An upper bearing b11 is arranged in the upper end hole of the sleeve 14, a lower bearing a20 is arranged in the lower end hole of the sleeve 14, a grinding wheel shaft 15 is arranged on the upper bearing b11 and the lower bearing a20, and the grinding wheel disc 8 is connected to the upper end of the grinding wheel shaft 15 by screws, an upper bearing a9 is arranged in the upper end hole of the grinding wheel shaft 15, a lower bearing c37 is arranged in the lower end hole of the grinding wheel shaft 15, a hole card 36 is arranged on the lower end surface of the lower bearing, the inner disk 6 device includes an inner disk shaft 10, the inner disk shaft 10 is arranged on the upper bearing a9 and the lower bearing c37, and the inner disk 6 is connected to the upper end of the inner disk shaft 10 by a flat key, the inner disk shaft 10 is fixedly connected to the center circle of the upper bearing a9 and the lower bearing c37, and at the same time, the rotation of the inner disk shaft 10 can be made smoother.

[0014] Furthermore, a plurality of upper mounting holes are provided at the lower end of the slide seat 13, and a long cylinder 16 is installed in each mounting hole through a nut. A bearing seat 27 is provided below the fuselage 12, and a plurality of lower mounting holes are provided on the bearing seat 27. The lower ends of a plurality of long cylinders 16 are respectively penetrated by the lower mounting holes and are installed in the lower mounting holes through nuts. An upper bearing c34, a spacer sleeve 33 and a lower bearing b32 are provided on the inner side of the bearing seat 27 from top to bottom. A pressure cover 31 is connected to the lower end surface of the bearing seat 27 through screws. A lead screw 26 is connected to the upper bearing c34 and the lower bearing b32. A motor (not shown in the figure) is provided below the bearing seat 27, and the output shaft of the motor is fixedly connected to the lower end of the lead screw 26, so that the lead screw 26 can be driven to rotate by the rotation of the motor.

[0015] Furthermore, a plurality of short cylinders 22 are fixedly connected to the disc 18 via nuts, and a nut plate 24 is fixedly connected to the lower ends of the plurality of short cylinders 22 via nuts. A fixing nut 23 and an adjusting nut 25 are provided on the nut plate 24, and the fixing nut 23 and the adjusting nut 25 are respectively connected to the upper ends of the lead screw 26 via threads. The rotation of the lead screw 26 can drive the nut plate 24 to move up and down, thereby driving the plurality of short cylinders 22 to move up and down, and finally driving the disc 18 to move up and down.

[0016] Furthermore, a round pin 35 is provided at the lower end of the inner disk shaft 10, and a supporting square rod 39 is connected through the round pin 35. Support bolts 40 are respectively provided in the two end holes of the supporting square rod 39, and round nuts 43 are respectively provided on the upper end surfaces of the two end holes of the supporting square rod 39. A fixing screw 41 is provided on the round nut 43. The upper ends of a plurality of supporting bolts 40 are respectively connected to supporting cylinders 44 through threads, and the upper ends of the supporting cylinders 44 are penetrated by the disk 18 and fixedly connected to the slide seat 13 through nuts. By screwing the round nut 43, the supporting bolt 40 can be rotated, and the supporting bolt 40 has no gap in the hole of the supporting square rod 39, and then the fixing screw 41 is tightened. Secondly, by screwing the two supporting bolts 40 forward and backward, the supporting square rod 39 will move up and down, so that the upper plane of the inner disk 6 is coplanar with the upper plane of the table panel 5.

[0017] Furthermore, a pulley is provided on the outer diameter of the lower section of the grinding wheel shaft 15, and a stop washer and a connecting nut 38 are also provided at the lower end surface of the pulley, and the grinding wheel shaft 15 can be driven to rotate through the pulley.

[0018] Working principle: Grinding wheel up and down movement mechanism: the motor rotates forward and reverse, and the motor drives the lead screw 26 to rotate forward and reverse. Because the slide 13 is fixed on the machine body 12 (stationary), the upper section of the guide cylinder 17 is arranged in the eccentric hole on the slide 13, and they are clearance fit, so the guide cylinder 17 can only move up and down. Because the sliding sleeve 14, the guide cylinder 17, the disc 18, the short cylinder 22, and the nut plate 24 are connected together, the forward and reverse rotation of the lead screw 26 can only make the sliding sleeve 14, the guide cylinder 17, the disc 18, the short cylinder 22, and the nut plate 24 move up and down together, that is, the grinding wheel transmission mechanism arranged in the hole of the sliding sleeve 14 moves up and down together, that is, the purpose of moving the grinding wheel up and down is achieved.

[0019] Inner disk 6 device: In order to achieve heavy grinding and grinding of high-precision springs without the need for a coarse and fine grinding process, an inner disk 6 is set in the hole of the lower grinding wheel 7. The upper plane of the inner disk 6 is coplanar with the upper plane of the table panel 5. Coplanar adjustment: First, turn the round nut 43 to allow the support bolt 40 to rotate, and make the support bolt 40 have no gap up and down in the hole of the support square rod 39, and then tighten the fixing screw 41. Secondly, turn the two support bolts 40 forward and backward, which will make the support square rod 39 move up and down (the two bolts move up and down synchronously), so that the upper plane of the inner disk 6 is coplanar with the upper plane of the table panel 5 (the upper plane of the table panel 5 is perpendicular to the center line of the axis of the inner disk 6).

[0020] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding wheel feeding and inner disc combination mechanism, characterized in that: The invention comprises a grinding wheel up and down moving mechanism and an inner disk device, wherein the grinding wheel up and down moving mechanism comprises an upper grinding wheel (1), a material disk (2), a spring (4), a table panel (5), an inner disk (6), a lower grinding wheel (7) and a grinding wheel disc (8), wherein the lower grinding wheel (7) is connected to the upper end of the grinding wheel disc (8) by bolts, the upper end of the material disk (2) is provided with a plurality of through holes, and the spring (4) is arranged in the through holes, the table panel (5) is arranged on the outer side of the lower grinding wheel (7), the material disk (2) is arranged on the upper end of the lower grinding wheel (7), and the The upper grinding wheel (1) is arranged at the upper end of the spring (4), the inner disc (6) is arranged on the inner side of the lower grinding wheel (7), a body (12) is arranged below the grinding wheel disc (8), a sliding seat (13) is arranged in the central hole of the body (12), a sliding sleeve (14) is arranged on the inner side of the sliding seat (13), a disc (18) is arranged on the outer circle of the lower section of the sliding sleeve (14), an outer card (19) is embedded on the lower side of the sliding sleeve (14), and the upper surface of the outer card (19) is in contact with the disc (18) so as to fix the disc ( 18), the disc (18) is provided with a lower eccentric hole, and a guide cylinder (17) is connected to the lower eccentric hole through a nut, the slide seat (13) is provided with an upper eccentric hole, and the upper end of the guide cylinder (17) is arranged in the upper eccentric hole through a clearance fit, an upper bearing b (11) is arranged in the upper end hole of the slide sleeve (14), a lower bearing a (20) is arranged in the lower end hole of the slide sleeve (14), and a grinding wheel shaft (11) is arranged on the upper bearing b (11) and the lower bearing a (20). 5), and the grinding wheel disc (8) is connected to the upper end of the grinding wheel shaft (15) by screws, an upper bearing a (9) is arranged in the upper end hole of the grinding wheel shaft (15), a lower bearing c (37) is arranged in the lower end hole of the grinding wheel shaft (15), and a hole card (36) is arranged on the lower end surface of the lower bearing, the inner disk (6) device includes an inner disk shaft (10), the inner disk shaft (10) is arranged on the upper bearing a (9) and the lower bearing c (37), and the inner disk (6) is connected to the upper end of the inner disk shaft (10) by a flat key.

2. A grinding wheel feeding and inner disc combination mechanism according to claim 1, characterized in that: The lower end of the slide seat (13) is provided with a plurality of upper mounting holes, and a long cylinder (16) is installed in each of the mounting holes through a nut. A bearing seat (27) is provided below the body (12). The bearing seat (27) is provided with a plurality of lower mounting holes, and the lower ends of the plurality of long cylinders (16) are respectively provided with lower mounting holes and are installed in the lower mounting holes through nuts. An upper bearing c (34), a spacer sleeve (33) and a lower bearing b (32) are sequentially provided on the inner side of the bearing seat (27) from top to bottom. A pressure cover (31) is connected to the lower end surface of the bearing seat (27) through screws. A lead screw (26) is connected to the upper bearing c (34) and the lower bearing b (32). A motor is provided below the bearing seat (27), and the output shaft of the motor is fixedly connected to the lower end of the lead screw (26).

3. A grinding wheel feeding and inner disc combination mechanism according to claim 2, characterized in that: A plurality of short cylinders (22) are fixedly connected to the disc (18) via nuts, and a nut plate (24) is fixedly connected to the lower ends of the plurality of short cylinders (22) via nuts. A fixing nut (23) and an adjusting nut (25) are provided on the nut plate (24), and the fixing nut (23) and the adjusting nut (25) are respectively connected to the upper end of the lead screw (26) via threads.

4. A grinding wheel feeding and inner disc combination mechanism according to claim 3, characterized in that: A round pin (35) is provided at the lower end of the inner disk shaft (10), and a supporting square rod (39) is connected via the round pin (35). Support bolts (40) are respectively provided in the two end holes of the supporting square rod (39). The upper end surfaces of the two end holes of the supporting square rod (39) are respectively provided with hexagonal nuts (43). A fixing screw (41) is provided on the hexagonal nuts (43). The upper ends of the two supporting bolts (40) are respectively connected to supporting cylinders (44) via threads. A disc (18) is passed through the upper end of the supporting cylinder (44), and the supporting cylinder (44) is fixedly connected to the sliding seat (13) via a nut.

5. A grinding wheel feeding and inner disc combination mechanism according to claim 4, characterized in that: A belt pulley is arranged on the outer diameter of the lower section of the grinding wheel shaft (15), and a stop washer and a connecting nut (38) are also arranged on the lower end surface of the belt pulley.

6. A grinding wheel feeding and inner disc combination mechanism according to claim 4, characterized in that: The axis center line of the grinding wheel shaft (15), the center line of the grinding wheel disc (8), the center line of the grinding wheel (1), the center of the material disc (2), and the axis center line of the lead screw (26) are collinear or nearly collinear.

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