CN219945753U

CN219945753U - Super-fine linear grinding head

Info

Publication number: CN219945753U
Application number: CN202321270275.8U
Authority: CN
Inventors: 谢晶星
Original assignee: Yuzhun Precision Machinery Shanghai Co ltd
Current assignee: Yuzhun Precision Machinery Shanghai Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-11-03
Anticipated expiration: 2033-05-24

Abstract

The utility model discloses an ultra-precise linear grinding head, which comprises a motor, a driving shaft, a transmission assembly and a bracket, wherein the transmission assembly comprises: the eccentric groove, the connecting rod, the transmission block and the strip-shaped limiting groove; the eccentric groove is formed in the end face of one end, connected with the transmission assembly, of the driving shaft, the first end portion of the connecting rod is partially coupled with the eccentric groove, the bearing is sleeved at the second end portion of the connecting rod, the transmission block is arranged on the outer ring of the bearing, the width of the limiting groove is equal to that of the transmission block, and the length of the limiting groove is larger than that of the transmission block. The simplified transmission assembly enables the size and the mass of the grinding head to be smaller, saves space, and improves the response capability of starting and stopping the grinding head; the cost of the grinding head in the aspects of transportation, installation and maintenance is reduced, and the energy consumption during operation is correspondingly reduced; in addition, the transmission assembly is simplified, the accumulation of systematic errors is reduced, the grinding precision of the grinding head is improved, and the method has a certain beneficial effect on improving the yield of finished products of processed workpieces of superfine grinding equipment.

Description

Super-fine linear grinding head

Technical Field

The utility model relates to the technical field of grinding equipment, in particular to an ultra-precise linear grinding head.

Background

Along with the progress of industrial modernization, the application of precision instruments is more widespread, and correspondingly, precision machining, namely machining with precision from micron to nanometer level, is more widespread; the grinding device is a common device in superfinishing as a high precision finishing surface finish. The grinding heads of the existing superfine grinding equipment drive the oilstones to vibrate at high frequency or rotate at high frequency so as to realize the linear grinding or arc grinding of the oilstones on the workpiece, thereby realizing the superfine grinding of the workpiece in a linear or arc way. Aiming at the grinding head for linear grinding, a crank-link mechanism is often adopted to convert the rotary motion output by a motor into linear motion, so that the linear grinding head has large volume and is inconvenient to install on a superfinishing grinding machine, the volume of the superfinishing grinding machine is increased, and the occupied space is large; the whole structure of the crank connecting rod is complex, and under the requirement of higher production efficiency, the larger the volume and the higher the mechanism complexity are in the process of high-frequency linear grinding, the more unfavorable the improvement of the linear grinding oilstone reciprocating motion efficiency is; in addition, under the condition of high requirement on ultra-fine grinding precision, the more complex the mechanism for transmitting the driving force is, the larger the precision error is gradually accumulated in the motion, so that the technical problems to be solved by the person skilled in the art are how to simplify the transmission structure inside the grinding head, reduce the whole volume and the quality of the grinding head to ensure the precision and improve the production efficiency.

Disclosure of Invention

According to the embodiment of the utility model, in order to solve the defects in the prior art, the super-precision linear grinding head comprises a motor, a driving shaft, a transmission assembly and a bracket, wherein two ends of the driving shaft are respectively connected with an output end of the motor and the transmission assembly; be equipped with drive seat and oilstone subassembly on the support, drive assembly links to each other and drives the support and do straight reciprocating motion with the drive seat, and drive assembly contains: the eccentric groove, the connecting rod, the transmission block and the strip-shaped limiting groove; the eccentric groove is formed in the end face of one end, connected with the transmission assembly, of the driving shaft, the connecting rod comprises a first end portion and a second end portion, the eccentric groove is formed in the first end portion, the portion, which is arranged in the eccentric groove, is a transmission section of the connecting rod, the transmission section is coupled with the eccentric groove, the connecting rod is not coaxial with the driving shaft, the second end portion is sleeved with a bearing, the transmission block is arranged on an outer ring of the bearing, the bar-shaped limiting groove is formed in the transmission seat, the transmission block is arranged in the bar-shaped limiting groove, the width of the limiting groove is equal to that of the transmission block, the length of the limiting groove is larger than that of the transmission block, and the transmission block is not contacted with two ends of the limiting groove in the length direction along the bar-shaped limiting groove in the process that the bearing drives the transmission block to move.

Preferably, the eccentric groove is a flat-bottom circular groove, and the center of the circular section of the circular groove is not coincident with the rotating shaft of the driving shaft.

Preferably, the bottom of the flat-bottom circular groove is provided with an eccentric hole, and the first end portion of the connecting rod except for the transmission section can be inserted into the eccentric hole.

Preferably, the support comprises a movable frame and an oilstone frame, the transmission seat is arranged on the movable frame, the oilstone frame is arranged on the movable frame, and the oilstone frame supports the oilstone assembly.

Preferably, a pneumatic assembly is arranged in the movable frame, and the pneumatic assembly can drive the movable frame to move.

Preferably, the pneumatic assembly comprises a pneumatic rod, a first piston cavity and a second piston cavity, wherein the first piston cavity and the second piston cavity are symmetrically arranged, a first piston is arranged in the first piston cavity, a first air inlet is formed in the outer side of the first piston cavity, a second piston is arranged in the second piston cavity, a second air inlet is formed in the outer side of the second piston cavity, and two ends of the pneumatic rod are connected with the first piston and the second piston respectively.

Preferably, the whetstone frame comprises a first support frame and a second support frame, the first support frame and the second support frame are respectively arranged at two ends of the movable frame, the whetstone assembly comprises a first whetstone and a second whetstone, the first whetstone is arranged on the first support frame, and the second whetstone is arranged on the second support frame.

Preferably, the device further comprises a turnover assembly, and the turnover assembly can drive the movable frame to turn around the driving shaft.

Preferably, the overturning assembly comprises a shell, a belt driver and a driver, wherein the shell is sleeved on the driving shaft, the shell is connected with the movable frame, the driver drives the belt driver, and a belt of the belt driver drives the shell to rotate.

According to the super-precision linear grinding head provided by the embodiment of the utility model, the transmission assembly for changing the output rotation of the motor into linear motion in the prior art is simplified by arranging the eccentric groove and the limiting groove, the simplified grinding head has smaller volume and small mass, occupied space is saved, meanwhile, the starting and stopping response capacity of the grinding head is improved, and quick response can be realized; the cost of the grinding head in transportation, installation and maintenance is reduced, and the energy consumption during operation on the grinding equipment is correspondingly reduced; in addition, the transmission assembly is simplified, the accumulation of systematic errors is reduced, the grinding precision of the grinding head is improved, and the method has a certain beneficial effect on improving the yield of finished products of processed workpieces of superfine grinding equipment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the technology claimed.

Drawings

FIG. 1 is a schematic view of an ultra-fine linear polishing head according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of an ultra-fine linear polishing head according to an embodiment of the utility model.

Description of the embodiments

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, which further illustrate the present utility model.

First, an ultra-fine linear polishing head according to an embodiment of the present utility model will be described with reference to fig. 1 and 2, for use in ultra-fine polishing and the like. In this embodiment, a linear polishing head polishing channel will be described as an example.

As shown in fig. 1 and 2, the ultra-fine linear grinding head of the embodiment of the utility model comprises a motor 1, a driving shaft 2, a transmission assembly 3, a bracket 4, a transmission seat 41 and an oilstone assembly 5, wherein the transmission assembly 3 comprises an eccentric groove 31, a connecting rod 32, a transmission block 33 and a strip-shaped limiting groove 34.

Specifically, as shown in fig. 1 and 2, two ends of a driving shaft 2 are respectively connected with an output end of a motor 1 and a transmission assembly 3; the bracket 4 is provided with a transmission seat 41 and an oilstone component 5, the transmission component 3 is connected with the transmission seat 41 and drives the bracket 4 to do linear reciprocating motion, so that the motor 1 outputs rotation, the transmission component 3 converts rotary motion into linear motion for output, and then the transmission seat 41 drives the bracket 4 to move, and drives the oilstone component 5 to perform corresponding grinding processing on a workpiece; the end face of one end of the driving shaft 2 connected with the transmission assembly 3 is provided with an eccentric groove 31, the eccentric groove 31 is recessed towards the inside of the driving shaft, the inside of the eccentric groove 31 is connected with a connecting rod 32, when the driving shaft 2 rotates, the connecting rod 32 is driven to eccentrically rotate, the specific connection mode is that two end parts of the connecting rod 32 are a first end part and a second end part, wherein the first end part is internally arranged in the eccentric groove 31, the part of the first end part, which is internally arranged in the eccentric groove 31, is a transmission section of the connecting rod 32, and the transmission section is coupled with the eccentric groove 31 so as to realize that the connecting rod 32 is not coaxial with the driving shaft 2, and the driving shaft 2 drives the connecting rod 32 to eccentrically rotate; similarly, the first end portion may be entirely built into the eccentric groove 31. The second end part is sleeved with a bearing, the transmission block 33 is arranged on the outer ring of the bearing, the bar-shaped limit groove 34 is arranged on the transmission seat 41, the transmission block 33 is arranged in the bar-shaped limit groove 34, the width of the limit groove is equal to that of the transmission block 33, the transmission block 33 is clung to the side wall of the bar-shaped limit groove 34 in the width direction, the transmission block 33 can be mutually extruded to reciprocally push the transmission seat 41 to do linear motion, the length of the limit groove is larger than that of the transmission block 33, the transmission block 33 is not contacted with the two ends of the limit groove in the length direction along the bar-shaped limit groove 34 in the process of driving the transmission block 33 to move, and the bar-shaped limit groove 34 has enough allowance space in the length direction, so that the transmission seat 41 can not be pushed, a transmission assembly 3 which rotates into linear motion in the prior art is simplified by arranging the eccentric groove 31 and the bar-shaped limit groove 34, the simplified grinding head has smaller volume and mass, saves occupied space and has faster response speed; the energy consumption of the grinding head running on the grinding equipment is reduced; in addition, the simplified transmission assembly 3 is beneficial to reducing the accumulation of systematic errors and improving the grinding precision of the grinding head, and has certain beneficial effects on improving the yield of finished products of processed workpieces of superfine grinding equipment.

Preferably, the eccentric groove 31 is a flat-bottom circular groove, the center of the circular section of the groove is not coincident with the rotating shaft of the driving shaft 2, so that the eccentric effect of the eccentric groove is realized, the flat-bottom circular groove is matched with the rod shape of the connecting rod 32, the fastening effect is good, and the stress which can be born is larger.

Preferably, the bottom of the flat-bottom circular groove is provided with an eccentric hole, the section of the eccentric hole can be equal to or smaller than the circular section of the flat-bottom circular groove, the first end part of the connecting rod 32 except the transmission section can be inserted into the eccentric hole, the connecting rod 32 is lengthened, the lengthened part is arranged in the transmission shaft, the stability is improved, the space outside is not occupied, and the whole grinding head volume is reduced.

Preferably, the support 4 comprises a movable frame 42 and an oilstone frame 43, the transmission seat 41 is arranged on the movable frame 42, the movable frame 42 has high strength and is used for directly bearing linear motion load in the driving process, the oilstone frame 43 is arranged on the movable frame 42, the oilstone frame 43 supports the oilstone assembly 5, different oilstones can be conveniently replaced when different processing demands are met, and the processing and maintenance processes are more flexible.

Preferably, the pneumatic assembly 6 is arranged in the movable frame 42, the space can be saved by arranging the movable frame 42 in the movable frame 42, and the pneumatic assembly 6 can drive the movable frame 42 to move so as to realize fine adjustment of the distance between the oilstone assembly 5 and the workpiece.

Preferably, the pneumatic assembly 6 comprises a pneumatic rod 61 and a first piston cavity 62 and a second piston cavity, the first piston cavity 62 and the second piston cavity are symmetrically arranged, a first piston 63 is arranged in the first piston cavity 62, a first air inlet 64 is arranged on the outer side of the first piston cavity 62, a second piston is arranged in the second piston cavity, a second air inlet is arranged on the outer side of the second piston cavity, two ends of the pneumatic rod 61 are respectively connected with the first piston 63 and the second piston, and in the direction along the movement of the piston, the first air inlet 64 and the second air inlet alternately intake and deflate, and the piston can push the pneumatic rod 61 to achieve fine adjustment of the position of the movable frame 42.

Preferably, the whetstone frame 43 comprises a first supporting frame and a second supporting frame, the first supporting frame and the second supporting frame are respectively arranged at two ends of the movable frame 42, the whetstone assembly 5 comprises a first whetstone and a second whetstone, the first whetstone is arranged on the first supporting frame, the second whetstone is arranged on the second supporting frame, and the specifications of the two whetstones are different, so that coarse grinding and fine grinding alternate work can be realized.

Preferably, the device also comprises a turnover assembly 7, wherein the turnover assembly 7 can drive the movable frame 42 to turn around the driving shaft 2, and the movable frame 42 is turned over to realize the switching processing between the first and second oilstones without changing the position of the workpiece.

Preferably, the turnover assembly 7 comprises a shell 71 and a belt driver 72, the shell 71 is sleeved on the driving shaft 2 and is connected with the movable frame 42, the driver 73 drives the belt driver 72, a belt of the belt driver 72 drives the shell 71 to rotate, the belt driving stability is good, the integral grinding head is driven to turn over, the oilstone is switched, and rough and finish machining effects are adjusted.

When in use, as shown in figures 1 and 2, the output end of the motor 1 drives the driving shaft 2 to generate rotary motion, the transmission assembly 3 converts the rotary motion into linear motion for output, and then the transmission seat 41 drives the bracket 4 to move, so as to drive the oilstone assembly 5 to perform corresponding grinding processing on a workpiece; the eccentric groove 31 is formed in the end face of one end, connected with the transmission assembly 3, of the driving shaft 2, when the driving shaft 2 rotates, the eccentric groove 31 eccentrically rotates, the inside of the eccentric groove 31 is connected with the connecting rod 32, the connecting rod 32 is driven to eccentrically rotate, the inner ring of the bearing bears circumferential load from the connecting rod 32, the outer ring of the bearing bears radial load of the transmission block 33, the bar-shaped limiting groove 34 is formed in the transmission seat 41, the transmission block 33 is arranged in the bar-shaped limiting groove 34, the transmission seat 41 can be pushed to reciprocate in the width direction to do linear motion, the transmission block 33 is not contacted with the two ends of the limiting groove in the length direction along the bar-shaped limiting groove 34, the transmission seat 41 is not pushed to realize conversion of rotation to linear motion, and the driving support 4 drives oilstones to reciprocate to linearly grind workpieces.

Above, the ultra-precise linear grinding head according to the embodiment of the utility model is described with reference to fig. 1 and 2, and the transmission assembly 3 is simplified by arranging the eccentric groove 31 and the limiting groove, so that the simplified grinding head has the advantages of smaller volume, small mass, occupied space saving and higher response speed; the energy consumption of the grinding head running on the grinding equipment is reduced; in addition, the simplified transmission assembly 3 is beneficial to reducing the accumulation of systematic errors and improving the grinding precision of the grinding head, and has certain beneficial effects on improving the yield of finished products of processed workpieces of superfine grinding equipment.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

It should be noted that in this specification the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

While the present utility model has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the utility model. Many modifications and substitutions of the present utility model will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the utility model should be limited only by the attached claims.

Claims

1. The super-fine linear grinding head comprises a motor, a driving shaft, a transmission assembly and a bracket, wherein two ends of the driving shaft are respectively connected with the output end of the motor and the transmission assembly; be equipped with drive seat and oilstone subassembly on the support, drive assembly with the drive seat links to each other and drives the support is straight reciprocating motion, its characterized in that, drive assembly contains:

the eccentric groove is formed in the end face of one end, connected with the driving shaft and the transmission assembly, of the driving shaft;

the connecting rod comprises a first end part and a second end part, the first end part is internally arranged in the eccentric groove, the part in which the eccentric groove is arranged is a transmission section of the connecting rod, the transmission section is coupled with the eccentric groove, the connecting rod is not coaxial with the driving shaft, and the second end part is sleeved with a bearing;

the transmission block is arranged on the outer ring of the bearing;

the bar-shaped limiting groove is formed in the transmission seat, the transmission block is arranged in the bar-shaped limiting groove, the width of the limiting groove is equal to that of the transmission block, the length of the limiting groove is larger than that of the transmission block, and the transmission block is not contacted with the two ends of the limiting groove in the direction along the length of the bar-shaped limiting groove in the process that the bearing drives the transmission block to move.

2. The ultra-fine linear grinding bit of claim 1, wherein the eccentric groove is a flat-bottom circular groove, and the center of the circular cross section of the circular groove is not coincident with the rotation axis of the drive shaft.

3. The ultra-fine linear grinding bit of claim 2, wherein the bottom of the flat-bottom circular groove is provided with an eccentric hole, and the first end of the connecting rod except for the transmission section is inserted into the eccentric hole.

4. The ultra-fine linear polishing head of claim 1, wherein the support comprises a movable frame and an oilstone frame, the transmission seat is disposed on the movable frame, the oilstone frame is disposed on the movable frame, and the oilstone frame supports the oilstone assembly.

5. The ultra-fine linear polishing head of claim 4, wherein a pneumatic assembly is disposed within the movable frame, the pneumatic assembly being operable to drive the movable frame.

6. The ultra-fine linear grinding bit according to claim 5, wherein the pneumatic assembly comprises a pneumatic rod, a first piston cavity and a second piston cavity, the first piston cavity and the second piston cavity are symmetrically arranged, a first piston is arranged in the first piston cavity, a first air inlet is formed in the outer side of the first piston cavity, a second piston is arranged in the second piston cavity, a second air inlet is formed in the outer side of the second piston cavity, and two ends of the pneumatic rod are connected with the first piston and the second piston respectively.

7. The ultra-fine linear polishing head of claim 4, wherein the whetstone frame comprises a first support frame and a second support frame, the first support frame and the second support frame are respectively disposed at two ends of the movable frame, the whetstone assembly comprises a first whetstone and a second whetstone, the first whetstone is disposed on the first support frame, and the second whetstone is disposed on the second support frame.

8. The ultra-fine linear polishing head of claim 7, further comprising: and the overturning assembly can drive the movable frame to overturn around the driving shaft.

9. The ultra-fine linear polishing head of claim 8, wherein the turnover assembly comprises a housing, a belt drive, and a driver, wherein the housing is sleeved on the drive shaft, the housing is connected with the movable frame, the driver drives the belt drive, and a belt of the belt drive drives the housing to rotate.