CN211639468U - Floating transmission structure of grinding disc on vertical double-end-face grinding machine - Google Patents

Abstract

The utility model relates to a floating transmission structure of abrasive disc on vertical bi-polar face grinds machine, including ball hinge, drive flange, floating flange, spacer, go up abrasive disc mounting disc, fixed flange and plane air bearing, ball hinge cover establish on the main shaft and link firmly with the main shaft through the fixing device of terminal surface down, the upper and lower terminal surface of drive flange cooperatees through the sphere of floating flange and ball hinge respectively, mounting flange coaxial arrangement follows the gliding main shaft sliding sleeve of main shaft in the axle sleeve, plane air bearing coaxial arrangement is under mounting flange terminal surface and is located between mounting flange and the last abrasive disc mounting disc, plane air bearing's venthole sets up the top at last abrasive disc mounting disc. The utility model discloses improved the floating driven stability of ball hinge, during the grinding process, go up the unsteady sensitivity of abrasive disc, the vibration is little to can obtain higher machining precision, and effectively prolonged drive disk's life.

Description

Floating transmission structure of grinding disc on vertical double-end-face grinding machine

Technical Field

The utility model relates to an end face grinding equipment specifically is a floating structure of last abrasive disc of vertical double-end face grinding machine.

Background

The double-end-face grinding machine is widely applied to industries such as precision bearings and photovoltaic electronics, along with technological progress, the precision requirement of end face grinding processing is higher and higher, and great challenges are caused to existing machine tool equipment. At present, in order to further improve the machining precision and stability of a machine tool, the structure of each part of the machine tool is comprehensively analyzed according to the machining working condition, for the upper grinding disc transmission structure of the machine tool, a plurality of workpieces are machined at one time during grinding, and each workpiece inevitably has a certain height error.

At present, the traditional upper grinding disc transmission structure is that an upper grinding disc is directly and fixedly arranged at the lower end of an upper disc rotating main shaft. In order to reduce the machining precision error caused by the working condition, a machine tool manufacturer changes the traditional upper grinding disc transmission structure into ball hinge type transmission, for example, patent CN208713675U (a rocker arm mechanism of a double-sided grinding machine and a double-sided grinding machine using the same) describes the transmission structure in the specific implementation mode of the specification, and the structure reduces the vibration at the initial stage of machining to a certain extent, and provides technical support for higher machining precision. However, in practical application, the pressing power of the upper grinding disc is provided by the air cylinder positioned at the upper end of the main shaft, and the upper grinding disc is mapped to the end face of the ball hinge through the main shaft, and the diameter of the upper grinding disc is far larger than that of the ball hinge, so that certain hysteresis phenomenon exists in the floating of the upper grinding disc in the rotating process, and obvious vibration can also exist.

Disclosure of Invention

The utility model aims at providing a floating transmission structure of abrasive disc on vertical bi-polar face grinds machine adopts ball hinge formula transmission structure, through set up the spacer between main shaft terminal surface and ball hinge, sets up mounting flange at main shaft sliding sleeve terminal surface, sets up plane air bearing between mounting flange and last abrasive disc, improves the floating driven stability of ball hinge to obtain higher machining precision, guarantee transmission components's life.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a floating transmission structure of an upper grinding disc of a vertical double-end-face grinding machine comprises a ball hinge, a transmission flange, a floating flange, a spacer bush, an upper grinding disc mounting disc, a fixed flange and a plane air bearing, wherein the ball hinge is sleeved on a main shaft and is fixedly connected with the main shaft through a fixing device of a lower end face, the middle part of the outer spherical surface of the ball hinge is equally provided with first transmission teeth, the middle part of an inner hole of the transmission flange is equally provided with second transmission teeth meshed with the first transmission teeth, the upper end face and the lower end face of the transmission flange are respectively matched with the spherical surface of the ball hinge through the floating flange, the lower end face of the transmission flange is fixedly connected with the upper grinding disc mounting disc through bolts, the spacer bush is arranged between the upper end face of the ball hinge and a shaft shoulder of the main shaft, the fixed flange is coaxially arranged on a main shaft sliding sleeve following the main shaft to slide in the shaft sleeve, the plane air, the air outlet of the plane air bearing is arranged above the upper grinding disc mounting disc.

The planar air bearing is characterized in that air inlet holes are formed in the outer cylindrical surface of the planar air bearing at equal intervals, the diameter of each air inlet hole is the same, each air inlet hole is correspondingly communicated with one group of air outlet holes, the diameter of each air outlet hole is the same, and the structure and the diameter of each group of air outlet holes are the same.

The whole transmission flange be two-stage step axle construction, its inside coaxial through-hole that is equipped with, the drill way at through-hole both ends all is coaxial to be provided with the annular groove that is used for installing the floating flange, is provided with annular boss on the pore wall of through-hole coaxial, second driving tooth partition set up on the hole periphery of annular boss, the floating flange pass through the bolt and link firmly with the transmission flange.

The fixed flange is fixedly connected with the main shaft sliding sleeve through a mounting flange, and the mounting flange is fixed on the lower end face of the main shaft sliding sleeve through a bolt.

The utility model has the advantages that: the utility model discloses a set up the spacer between main shaft terminal surface and ball hinge, set up mounting flange at main shaft sliding sleeve terminal surface, set up plane air bearing between mounting flange and last abrasive disc, improved the floating driven stability of ball hinge, add man-hour in the grinding, the unsteady sensitivity of last abrasive disc, the vibration is little to can obtain higher machining precision, and effectively prolong transmission parts's life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an assembly view of the middle transmission flange and the floating flange of the present invention.

Fig. 3 is a perspective view of the drive flange.

Fig. 4 is a perspective view of the ball hinge.

Fig. 5 is an assembly schematic diagram of the transmission flange, the ball hinge and the floating flange.

In the figure, 1, a ball hinge, 2, a transmission flange, 3, a floating flange, 4, a spacer bush, 5, an upper grinding disc mounting disc, 6, a fixed flange, 7, a planar air bearing, 8, a main shaft, 9, a main shaft sliding sleeve, 10, a shaft sleeve, 11, an air inlet hole, 12, an air outlet hole, 13, an upper grinding disc, 14, a mounting flange, 101, a first transmission tooth, 201 and a second transmission tooth are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a floating transmission structure for an upper grinding disc of a vertical double-end-face grinding machine comprises a ball hinge 1, a transmission flange 2, a floating flange 3, a spacer 4, an upper grinding disc mounting disc 5, a fixed flange 6 and a plane air bearing 7, wherein the ball hinge 1 is sleeved on a main shaft 8 and fixedly connected with the main shaft 8 through a fixing device on the lower end face, the middle part of the outer spherical surface of the ball hinge 1 is equally provided with a first transmission tooth 101, the middle part of the inner hole of the transmission flange 2 is equally provided with a second transmission tooth 201 meshed with the first transmission tooth 101, the upper end face and the lower end face of the transmission flange 2 are respectively matched with the spherical surface of the ball hinge 1 through the floating flange 3, the lower end face of the transmission flange 2 is also fixedly connected with the upper grinding disc mounting disc 5 through bolts, the upper grinding disc 13 is mounted on the lower end face of the upper grinding disc mounting disc 5, the spacer 4 is arranged between the upper end face of the, fixing flange 6 coaxial arrangement follows main shaft 8 and slides in axle sleeve 10 on main shaft sliding sleeve 9, and planar air bearing 7 coaxial arrangement is terminal surface under fixing flange 6 and is located between fixing flange 6 and last abrasive disc mounting disc 5, and planar air bearing 7's venthole sets up the top at last abrasive disc mounting disc 5.

The plane air bearing 7 is integrally cylindrical, through holes are formed in the plane air bearing, air inlet holes 11 are formed in the outer cylindrical surface of the plane air bearing in an evenly-divided circle mode, the diameters of the air inlet holes 11 are the same, each air inlet hole 11 is correspondingly communicated with one group of air outlet holes 12, the diameters of the air outlet holes 12 are the same, and the structures and the diameters of the air outlet holes 12 are the same.

The whole transmission flange 2 be two-stage step axle construction, its inside coaxial through-hole that is equipped with, the drill way at through-hole both ends all is coaxial to be provided with the annular groove that is used for installing floating flange 3, is coaxial on the pore wall of through-hole to be provided with annular boss, second driving tooth 201 partition set up on the hole periphery of annular boss, floating flange 3 link firmly with transmission flange 2 through the bolt.

The fixed flange 6 is fixedly connected with the main shaft sliding sleeve through a mounting flange 14, and the mounting flange 13 is fixed on the lower end face of the main shaft sliding sleeve 9 through a bolt.

The principle of the utility model is as follows: because the grinding processing belongs to finish machining, the height difference of workpieces is generally very small, so the floating difference of the whole upper disc can not exceed 0.3 mm generally; through adopting plane air bearing 7, form the thin layer of air about 1 mm between the up end plane of last abrasive disk mounting disc 5 and air bearing 7, make air supporting pad and plane form the clearance, produce approximate frictionless slip condition to make the unsteady more nimble between transmission flange and the ball hinge, the rotation of transmission flange is more stable and difficult vibration, has effectively improved the machining precision.

The part of the utility model not detailed is prior art.

Claims (4)

1. The utility model provides a floating transmission structure of abrasive disc on vertical bi-polar face grinds machine, includes ball hinge (1), transmission flange (2), floating flange (3), spacer (4), goes up abrasive disc mounting disc (5), mounting flange (6) and plane air bearing (7), characterized by: the ball hinge (1) is sleeved on the main shaft (8) and fixedly connected with the main shaft (8) through a fixing device of the lower end face, the middle part of the outer spherical surface of the ball hinge (1) is provided with a first transmission tooth (101) in an equal part manner, the middle part of the inner hole of the transmission flange (2) is provided with a second transmission tooth (201) meshed with the first transmission tooth (101) in an equal part manner, the upper end face and the lower end face of the transmission flange (2) are respectively matched with the spherical surface of the ball hinge (1) through a floating flange (3), the lower end face of the transmission flange (2) is fixedly connected with the upper grinding disc mounting disc (5) through bolts, the spacer sleeve (4) is arranged between the upper end face of the ball hinge (1) and the shaft shoulder of the main shaft (8), the fixing flange (6) is coaxially mounted on a main shaft sliding sleeve (9) sliding in the shaft sleeve (10) along with the main shaft (8), and the planar air bearing (7) is coaxially mounted on the lower end face of the fixing flange (6), the air outlet hole of the plane air bearing (7) is arranged above the upper grinding disc mounting disc (5).

2. The floating transmission structure of the grinding disc on the vertical double-end-face grinder as claimed in claim 1, wherein: the plane air bearing (7) is integrally cylindrical, a through hole is formed in the plane air bearing, air inlet holes (11) are formed in the outer cylindrical surface of the plane air bearing in an evenly-divided mode, the diameter of each air inlet hole (11) is identical, each air inlet hole (11) is correspondingly communicated with one group of air outlet holes (12), the diameter of each air outlet hole (12) is identical, and the structure and the diameter of each group of air outlet holes (12) are identical.

3. The floating transmission structure of the grinding disc on the vertical double-end-face grinder as claimed in claim 1, wherein: the whole transmission flange (2) be two-stage step axle construction, its inside coaxial through-hole that is equipped with, the drill way at through-hole both ends all is coaxial to be provided with the annular groove that is used for installing floating flange (3), is coaxial on the pore wall of through-hole to be provided with annular boss, second driving tooth (201) partition set up on the hole periphery of annular boss, floating flange (3) link firmly through bolt and transmission flange (2).

4. The floating transmission structure of the grinding disc on the vertical double-end-face grinder as claimed in claim 1, wherein: the fixing flange (6) is fixedly connected with the main shaft sliding sleeve (9) through a mounting flange (13), and the mounting flange (13) is fixed on the lower end face of the main shaft sliding sleeve (9) through a bolt.

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