Swinging and floating mechanism of grinding head

Abstract

The utility model provides a swinging and floating mechanism of a grinding head. The swinging and floating mechanism comprises an elastic swinging part, a floating disc, a connecting seat and a guide limiting mechanism, a plurality of elastic swing pieces are distributed between the floating disc and the connecting base at intervals in the circumferential direction, and the guide limiting mechanism is located in an area defined by the elastic swing pieces; the guide limiting mechanism comprises an inner body, an outer body and balls, the outer body is arranged outside the inner body in a sleeving mode, the upper end of the inner body is connected with the connecting base, and the lower end of the outer body is connected with the floating disc; a plurality of guide limiting channels are distributed between the outer wall of the inner body and the inner wall of the outer body at intervals in the circumferential direction, each guide limiting channel extends in the vertical direction, and one ball is arranged in each guide limiting channel in a rolling mode. The grinding head has the advantage that the stability of the whole grinding head during floating and swinging can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machines, and particularly relates to a swing floating mechanism for a grinding head.

Background Art

[0002] For the grinding and polishing of stone or plate-shaped materials, the surface of the material to be processed is continuously ground by a grinding head so that the surface of the material to be processed reaches a certain smoothness.

[0003] The grinding block of the traditional grinding head can only revolve around the main shaft, and the grinding effect is not good. In order to improve the grinding effect, the Chinese invention patent application with the application number CN202011030006.5 discloses an improved grinding head, which realizes the characteristic that the grinding block can swing left and right when rotating around the central axis by setting a differential mechanism, an orbital block and a plurality of swing seats. However, the swing stability of the existing grinding head is poor, and there is an urgent need to provide a swing floating mechanism that can make the grinding head swing smoothly.

Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a swing floating mechanism for a grinding head, which can effectively improve the smoothness of the grinding head during floating swing.

[0005] The utility model is realized as follows: a swing floating mechanism for a grinding head, including an elastic swing member, a floating disc, a connecting seat and a guiding and limiting mechanism; a plurality of elastic swing members are circumferentially and spacedly distributed between the floating disc and the connecting seat, and the guiding and limiting mechanism is located in the area surrounded by each elastic swing member;

[0006] The guiding and limiting mechanism includes an inner body, an outer body and a ball. The outer body is sleeved outside the inner body. The upper end of the inner body is connected to the connecting seat, and the lower end of the outer body is connected to the floating disc; a plurality of guiding and limiting channels are circumferentially and spacedly distributed between the outer wall of the inner body and the inner wall of the outer body. Each guiding and limiting channel extends along the vertical direction, and a ball is rotatably arranged in each guiding and limiting channel.

[0007] Further, the inner body sequentially includes a guiding cylinder section, a limiting cylinder section and a locking disc from bottom to top; the outer diameter of the limiting cylinder section is greater than that of the guiding cylinder section, and the outer walls of the guiding cylinder section and the limiting cylinder section are circumferentially and spacedly distributed with first ball grooves for forming guiding and limiting channels; the locking disc is connected to the connecting seat, and a first swing floating gap is left between the upper end of the outer body and the locking disc; a limiting disc body is further arranged at the lower end of the guiding cylinder section.

[0008] Further, a limiting step is formed on the inner wall of the outer body. A first cavity section is formed above the limiting step. Second ball grooves for forming a guiding and limiting channel are distributed at intervals around the circumferential direction of the cavity wall of the first cavity section. A second cavity section for the guiding cylinder section to pass through is formed below the limiting step. The outer diameter of the guiding cylinder section is smaller than the inner diameter of the second cavity section. The outer diameter of the limiting cylinder section is smaller than the inner diameter of the first cavity section and larger than the inner diameter of the second cavity section.

[0009] Further, a first positioning convex ring is formed in the middle of the upper surface of the locking disc, and a first positioning groove that closely cooperates with the first positioning convex ring is formed on the connecting seat.

[0010] Further, an assembly through hole is formed through the middle of the floating disc. A limiting convex ring extending downward is provided on the inner side of the bottom of the outer body and extends into the assembly through hole. The outer side of the bottom of the outer body is connected to the floating disc. The limiting disc body is arranged at the lower part in the assembly through hole, and the outer diameter of the limiting disc body is larger than the inner diameter of the limiting convex ring.

[0011] Further, a second positioning convex ring is formed in the middle of the lower surface of the guiding cylinder section, and a second positioning groove that closely cooperates with the second positioning convex ring is formed on the limiting disc body.

[0012] Further, the elastic swing member includes a spring, a first limiting member arranged at the bottom of the connecting seat, and a second limiting member arranged at the top of the floating disc. The spring is installed between the first limiting member and the second limiting member. The first limiting member has a first limiting pin column inserted into the upper end of the spring, and the second limiting member has a second limiting pin column inserted into the lower end of the spring.

[0013] Further, 8 of the elastic swing members are distributed at equal intervals around the circumferential direction between the floating disc and the connecting seat.

[0014] Further, 6 guiding and limiting channels are distributed at equal intervals around the circumferential direction between the outer wall of the inner body and the inner wall of the outer body.

[0015] Further, the connecting seat includes a connecting column, a flange joint arranged at the upper end of the connecting column, and a connecting disc arranged at the lower end of the connecting column. The upper ends of the elastic swing member and the guiding and limiting mechanism are both connected to the connecting disc. An outer protective cover covering the outside of each elastic swing member is formed by the outer edge of the connecting disc extending downward around the circumferential direction. A second swing and floating gap is left between the lower end of the outer protective cover and the floating disc.

[0016] By adopting the technical solution of the present utility model, there are at least the following beneficial effects: By designing that a plurality of elastic swing members are distributed at intervals around the circumferential direction between the floating disk and the connecting seat, and a guiding and limiting mechanism is arranged in the area surrounded by each elastic swing member. The guiding and limiting mechanism includes an inner body, an outer body and a ball, and a guiding and limiting channel is formed between the outer wall of the inner body and the inner wall of the outer body, and a ball is rotatably arranged in each guiding and limiting channel; so that during specific operation, the floating disk can only float and swing up and down along the vertical direction under the cooperation and guidance of the ball and the guiding and limiting channel, and the cooperation between the ball and the guiding and limiting channel can also well control the swinging angle of the floating disk, ensuring that the floating disk can drive the grinding block to stably float and swing up and down, thereby effectively improving the stability of the entire grinding head during floating and swinging.

Description of the Drawings

[0017] The following further describes the present utility model with reference to the drawings in conjunction with embodiments.

[0018] Figure 1 It is a three-dimensional structure diagram of a swing floating mechanism of a grinding head of the present utility model;

[0019] Figure 2 It is a bottom structure diagram of a swing floating mechanism of a grinding head of the present utility model;

[0020] Figure 3 It is an exploded view of a swing floating mechanism of a grinding head of the present utility model;

[0021] Figure 4 It is one of the cross-sectional views of a swing floating mechanism of a grinding head of the present utility model;

[0022] Figure 5 It is the second cross-sectional view of a swing floating mechanism of a grinding head of the present utility model;

[0023] Figure 6 It is a structure diagram of the inner body in the present utility model;

[0024] Figure 7 It is a three-dimensional top view of the outer body in the present utility model;

[0025] Figure 8 It is a three-dimensional bottom view of the outer body in the present utility model.

[0026] Description of the reference numerals:

[0027] Swing floating mechanism 100;

[0028] Elastic swing member 1, spring 11, first limiting member 12, first limiting pin 121, second limiting member 13, second limiting pin 131;

[0029] Floating disk 2, assembly through hole 21;

[0030] Connecting seat 3, first positioning groove 31, connecting column 32, flange joint 33, connecting plate 34, protective outer cover 341, second swing floating gap 35;

[0031] Guiding and limiting mechanism 4, inner body 41, guiding cylinder section 411, second positioning convex ring 4111, limiting cylinder section 412, locking disc 413, first positioning convex ring 4131, first ball groove 414, first swing floating gap 415, limiting disc body 416, second positioning groove 4161, outer body 42, avoiding blind hole 421, limiting step 422, first cavity section 423, second ball groove 424, second cavity section 425, limiting convex ring 426, ball 43, guiding and limiting channel 44;

[0032] First locking member 51, second locking member 52, third locking member 53.

Specific implementation manners

[0033] In order to better understand the technical solution of the present utility model, the technical solution of the present utility model will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0034] It should be noted here that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing these implementation manners and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0035] Please refer to Figures 1 to 8 As shown, a swing floating mechanism 100 of a grinding head of the present utility model, the swing floating mechanism 100 includes an elastic swing member 1, a floating disc 2, a connecting seat 3 and a guiding and limiting mechanism 4. Among them, the elastic swing member 1 is used to achieve the swing floating effect, the floating disc 2 is used to install a grinding block (not shown) and drive the grinding block to perform swing floating, the connecting seat 3 is used to connect the main shaft (not shown) of a grinding host, and the guiding and limiting mechanism 4 is used to guide and limit the swing floating of the floating disc 2 and the grinding block;

[0036] A number of elastic swing members 1 are distributed at intervals around the circumferential direction between the floating disk 2 and the connecting seat 3. The guiding and limiting mechanism 4 is located within the area enclosed by each elastic swing member 1, enabling the floating disk 2 to swing and float in all directions under the action of each elastic swing member 1 and the guiding and limiting mechanism 4.

[0037] The guiding and limiting mechanism 4 includes an inner body 41, an outer body 42, and a ball 43. The outer body 42 is sleeved outside the inner body 41. The upper end of the inner body 41 is connected to the connecting seat 3, and the lower end of the outer body 42 is connected to the floating disk 2, such that the inner body 41 can only rotate following the connecting seat 3 under the action of the main shaft of the grinding host, while the outer body 42 can not only rotate but also move up and down. A number of guiding and limiting channels 44 are distributed at intervals around the circumferential direction between the outer wall of the inner body 41 and the inner wall of the outer body 42. Each guiding and limiting channel 44 extends along the vertical direction, and a ball 43 is rotatably arranged in each guiding and limiting channel 44, that is, the ball 43 can roll up and down in the guiding and limiting channel 44.

[0038] In the present utility model, a number of elastic swing members 1 are distributed at intervals around the circumferential direction between the floating disk 2 and the connecting seat 3. A guiding and limiting mechanism 4 is arranged within the area enclosed by each elastic swing member 1. The guiding and limiting mechanism 4 includes an inner body 41, an outer body 42, and a ball 43, and a guiding and limiting channel 44 is formed between the outer wall of the inner body 41 and the inner wall of the outer body 42, and a ball 43 is rotatably arranged in each guiding and limiting channel 44. During specific operation, the floating disk 2 can only swing and float up and down along the vertical direction under the cooperation and guidance of the ball 43 and the guiding and limiting channel 44, and the cooperation between the ball 43 and the guiding and limiting channel 44 can also well control the swinging angle of the floating disk 2, ensuring that the floating disk 2 can drive the grinding block to swing and float up and down stably, thereby effectively improving the stability of the entire grinding head during floating and swinging.

[0039] In some embodiments of the present utility model, please refer to with emphasis Figure 6As shown, the inner body 41 successively includes a guiding cylinder section 411, a limiting cylinder section 412, and a locking disc 413 from bottom to top; the outer diameter of the limiting cylinder section 412 is greater than that of the guiding cylinder section 411 to achieve an upper limiting function by means of the limiting cylinder section 412; first ball grooves 414 for forming a guiding and limiting channel 44 are circumferentially and spacedly distributed on the outer walls of the guiding cylinder section 411 and the limiting cylinder section 412; the locking disc 413 is connected to the connecting seat 3, and a first swing floating gap 415 is left between the upper end of the outer body 42 and the locking disc 413, enabling the outer body 42 to move up and down by means of this first swing floating gap 415; a limiting disc body 416 is further provided at the lower end of the guiding cylinder section 411 to achieve a lower limiting function by means of the limiting disc body 416. In the specific implementation of the present utility model, the locking disc 413 and the connecting seat 3 can be locked and connected together by a plurality of first locking members 51, and the first locking members 51 can adopt bolts. At the same time, in order to prevent the first locking members 51 from affecting the up and down movement of the outer body 42 and ensure that the overall structure is more compact, avoidance blind holes 421 are formed at the top surface of the outer body 42 at the positions corresponding to each first locking member 51 to play an avoidance role for the first locking members 51. This

[0040] Furthermore, please refer specifically to Figure 7 and Figure 8As shown, a limiting step 422 is formed on the inner wall of the outer body 42. When the present utility model is in specific use, when the outer body 42 moves upward until the limiting step 422 contacts the lower end of the limiting column section 412, the outer body 42 cannot continue to move upward, thus playing an upper limiting role; a first cavity section 423 is formed above the limiting step 422, and second ball grooves 424 for forming a guiding and limiting channel 44 are circumferentially and spacedly distributed on the cavity wall of the first cavity section 423, so that the limiting step 422 can also play a limiting role on the balls 43 to ensure that the balls 43 do not fall downward; a second cavity section 425 for the guiding column section 411 to pass through is formed below the limiting step 422. When the lower end of the outer body 42 moves downward until it contacts the upper surface of the limiting disc body 416 at the lower end of the guiding column section 411, the outer body 42 cannot continue to move downward, thus playing a lower limiting role; the outer diameter of the guiding column section 411 is smaller than the inner diameter of the second cavity section 425, so that the guiding column section 411 can pass through the second cavity section 425, and the guiding column section 411 does not affect the movement of the outer body 42; the outer diameter of the limiting column section 412 is smaller than the inner diameter of the first cavity section 423 and larger than the inner diameter of the second cavity section 425, so that the limiting column section 412 can be inserted into the first cavity section 423 and cooperate with the limiting step 422 to achieve the upper limiting function. As can be seen from the above, when the guiding and limiting mechanism 4 of the present utility model is in specific use, the guiding function is mainly achieved by the cooperation of the balls 43 and the guiding and limiting channel 44, and the limiting function is mainly achieved by the cooperation of the limiting step 422 and the limiting column section 412 and the cooperation of the lower end of the outer body 42 and the limiting disc body 416.

[0041] In some embodiments of the present utility model, a first positioning convex ring 4131 is formed in the middle of the upper surface of the locking disc 413, and a first positioning groove 31 that closely cooperates with the first positioning convex ring 4131 is formed on the connecting seat 3, so as to accurately position the inner body 41 on the connecting seat 3 through the cooperation of the first positioning convex ring 4131 and the first positioning groove 31. In this way, it is not only convenient for actual installation operations, but also enables the inner body 41 and the connecting seat 3 to be more reliably combined together.

[0042] In some embodiments of the present utility model, an assembly through-hole 21 is formed through the middle of the floating disk 2. A limiting convex ring 426 extending downward is provided on the inner side of the bottom of the outer body 42 and extends into the assembly through-hole 21, and the outer side of the bottom of the outer body 42 is connected to the floating disk 2; the limiting disk body 416 is arranged at the lower part inside the assembly through-hole 21, and the outer diameter of the limiting disk body 416 is greater than the inner diameter of the limiting convex ring 426, so that the limiting convex ring 426 can contact the limiting disk body 416 during the movement of the outer body 42, thereby realizing the lower limit function. When the present utility model is specifically implemented, a limiting convex ring 426 can be formed by extending downward on the inner side of the lower surface of the outer body 42 (i.e., the side of the lower surface of the outer body 42 close to the guiding column section 411), and the outer side of the lower surface of the outer body 42 (i.e., the side of the lower surface of the outer body 42 far from the guiding column section 411) is locked and connected to the floating disk 2 by a plurality of second locking parts 52. Among them, the second locking parts 52 can adopt bolts. At the same time, the limiting disk body 416 and the bottom of the guiding column section 411 are locked and connected together by a plurality of third locking parts 53, and the third locking parts 53 can adopt bolts.

[0043] In some embodiments of the present utility model, a second positioning convex ring 4111 is formed in the middle of the lower surface of the guiding column section 411, and a second positioning groove 4161 tightly matching with the second positioning convex ring 4111 is formed on the limiting disk body 416, so as to accurately position the limiting disk body 416 at the bottom of the guiding column section 411 through the cooperation of the second positioning convex ring 4111 and the second positioning groove 4161. This can not only facilitate the actual installation operation, but also make the limiting disk body 416 and the guiding column section 411 more reliably combined together.

[0044] In some embodiments of the present utility model, please refer specifically to Figure 3 and Figure 5 As shown, the elastic swing member 1 includes a spring 11, a first limiting member 12 arranged at the bottom of the connecting seat 3, and a second limiting member 13 arranged at the top of the floating disk 2. The spring 11 is installed between the first limiting member 12 and the second limiting member 13, and the first limiting member 12 has a first limiting pin 121 inserted into the upper end of the spring 11 to limit the upper end of the spring 11 by using the first limiting pin 121. The second limiting member 13 has a second limiting pin 131 inserted into the lower end of the spring 11 to limit the lower end of the spring 11 by using the second limiting pin 131, ensuring that the spring 11 will not be separated from the first limiting member 12 and the second limiting member 13.

[0045] As a specific embodiment of the present utility model, in order to ensure that the floating disc 2 can perform floating swing more smoothly, eight elastic swing members 1 are evenly distributed around the circumferential direction between the floating disc 2 and the connecting seat 3. Of course, the present utility model is not limited to this. In specific implementation, the number of the elastic swing members 1 can be increased or decreased according to actual needs.

[0046] As a specific embodiment of the present utility model, in order to play a better guiding and limiting role on the floating disc 2, thereby further improving the smoothness of the floating disc 2 during floating swing, six guiding and limiting channels 44 are evenly distributed around the circumferential direction between the outer wall of the inner body 41 and the inner wall of the outer body 42. Of course, the present utility model is not limited to this. In specific implementation, the number of the guiding and limiting channels 44 can be increased or decreased according to actual needs.

[0047] In some embodiments of the present utility model, the connecting seat 3 includes a connecting column 32, a flange joint 33 provided at the upper end of the connecting column 32, and a connecting disc 34 provided at the lower end of the connecting column 32. The flange joint 33 is used to connect with the main shaft of the grinding host. The upper ends of the elastic swing member 1 and the guiding and limiting mechanism 4 are both connected to the connecting disc 34. An outer protective cover 341 covering the outside of each elastic swing member 1 is formed by the outer edge of the connecting disc 34 extending downward around the circumferential direction. A second swing floating gap 35 is left between the lower end of the outer protective cover 341 and the floating disc 2 to prevent the outer protective cover 341 from affecting the floating swing of the floating disc 2.

[0048] The present utility model designs the connecting seat 3 with an outer protective cover 341 covering the outside of each elastic swing member 1, and a second swing floating gap 35 is left between the lower end of the outer protective cover 341 and the floating disc 2, so that during specific operation, the outer protective cover 341 can play a certain protective role on the internal elastic swing member 1 and guiding and limiting mechanism 4, and the outer protective cover 341 will not affect the floating swing of the floating disc 2.

[0049] Although the specific embodiments of the present utility model are described above, those skilled in the art should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present utility model. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present utility model should be covered by the scope protected by the claims of the present utility model.

Claims

1. A swing floating mechanism for a grinding head, characterized in that: It includes an elastic swing member, a floating disc, a connecting seat and a guiding and limiting mechanism; a plurality of elastic swing members are circumferentially and spacedly distributed between the floating disc and the connecting seat, and the guiding and limiting mechanism is located in the area surrounded by each elastic swing member; The guiding and limiting mechanism includes an inner body, an outer body and a ball. The outer body is sleeved outside the inner body. The upper end of the inner body is connected to the connecting seat, and the lower end of the outer body is connected to the floating disc. A plurality of guiding and limiting channels are circumferentially and spacedly distributed between the outer wall of the inner body and the inner wall of the outer body. Each guiding and limiting channel extends along the vertical direction, and a ball is rollably arranged in each guiding and limiting channel.

2. The swing floating mechanism of a grinding head according to claim 1, characterized in that: The inner body successively includes a guiding cylinder section, a limiting cylinder section and a locking disc from bottom to top. The outer diameter of the limiting cylinder section is larger than that of the guiding cylinder section, and the outer walls of the guiding cylinder section and the limiting cylinder section are circumferentially and spacedly distributed with first ball grooves for forming guiding and limiting channels. The locking disc is connected to the connecting seat, and a first swinging and floating gap is left between the upper end of the outer body and the locking disc. A limiting disc body is also arranged at the lower end of the guiding cylinder section.

3. The swing floating mechanism of a grinding head according to claim 2, characterized in that: A limiting step is formed on the inner wall of the outer body. A first cavity section is formed above the limiting step. The cavity wall of the first cavity section is circumferentially and spacedly distributed with second ball grooves for forming guiding and limiting channels. A second cavity section for the guiding cylinder section to pass through is formed below the limiting step. The outer diameter of the guiding cylinder section is smaller than the inner diameter of the second cavity section, and the outer diameter of the limiting cylinder section is smaller than the inner diameter of the first cavity section and larger than the inner diameter of the second cavity section.

4. The swing floating mechanism of a grinding head according to claim 2, characterized in that: A first positioning convex ring is formed in the middle of the upper surface of the locking disc, and a first positioning groove closely matching the first positioning convex ring is formed on the connecting seat.

5. The swing floating mechanism of a grinding head according to claim 3, characterized in that: An assembly through hole is formed through the middle of the floating disc. A limiting convex ring extending downward is arranged on the inner side of the bottom of the outer body and extends into the assembly through hole. The outer side of the bottom of the outer body is connected to the floating disc. The limiting disc body is arranged in the lower part of the assembly through hole, and the outer diameter of the limiting disc body is larger than the inner diameter of the limiting convex ring.

6. The swing floating mechanism of a grinding head according to claim 2, wherein: A second positioning convex ring is formed in the middle of the lower surface of the guiding cylinder section, and a second positioning groove closely matching the second positioning convex ring is formed on the limiting disc body.

7. The swing floating mechanism of a grinding head according to claim 1, characterized in that: The elastic swing member includes a spring, a first limiting member arranged at the bottom of the connecting seat and a second limiting member arranged at the top of the floating disc. The spring is installed between the first limiting member and the second limiting member. The first limiting member has a first limiting pin column inserted into the upper end of the spring, and the second limiting member has a second limiting pin column inserted into the lower end of the spring.

8. A swing floating mechanism of a grinding head according to any one of claims 1-7, characterized in that: 8 such elastic swing members are circumferentially and equally spaced between the floating disc and the connecting seat.

9. The swing floating mechanism of a grinding head according to any one of claims 1-7, characterized in that: 6 guiding and limiting channels are circumferentially and equally spaced between the outer wall of the inner body and the inner wall of the outer body.

10. The swing floating mechanism of a grinding head according to claim 1, characterized in that: The connecting seat includes a connecting column, a flange joint provided at the upper end of the connecting column, and a connecting disc provided at the lower end of the connecting column. The upper ends of the elastic swing member and the guiding and limiting mechanism are both connected to the connecting disc; an outer protective cover covering the outside of each elastic swing member is formed by the outer edge of the connecting disc extending downward in the circumferential direction, and a second swing floating gap is left between the lower end of the outer protective cover and the floating disc.

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