CN209425121U - Bore grinding unit with eccentric adjustment - Google Patents

Abstract

The inner hole grinding device with the eccentric adjustment function comprises a grinder body, wherein the grinder body is provided with a workbench and a mounting seat which move back and forth, the workbench is provided with a rotary positioning mechanism, and the mounting seat is provided with an eccentric adjustment grinding assembly; the rotary positioning mechanism comprises a bottom plate arranged on the workbench, and a spindle seat, a motor seat, a V-shaped positioning seat and an auxiliary limiting mechanism are arranged on the bottom plate; a bearing is arranged in the main shaft seat, and a rotating shaft penetrates through an inner ring of the bearing; a turntable is arranged at one end of the rotating shaft close to the V-shaped positioning seat, and a deflector rod is arranged on the turntable; the motor arranged on the motor base drives the rotating shaft to rotate; the auxiliary limiting mechanism is positioned on the workpiece of the V-shaped positioning seat in a limiting manner. The outer circle of the part can be positioned on the V-shaped positioning seat, the deviation of the axis of the part from the axis of the grinding head clamped on the eccentric adjusting grinding assembly is avoided, and the concentricity requirement of the inner hole and the outer circle after the part is machined is met.

Description

Bore grinding unit with eccentric adjustment

technical field

The utility model relates to the field of internal grinding, in particular to an internal hole grinding device with eccentric adjustment.

Background technique

The inner hole grinding of shaft parts is a relatively conventional processing technology of shaft parts. The current parts need to grind the inner hole by clamping the parts through the three-jaw chuck, and the main shaft drives the parts to rotate, and the high-speed grinding head grinds the products. However, clamping the workpiece by the three-jaw chuck will cause the part to be clamped off-center, thus resulting in poor quality of the product after grinding. In view of the above defects, it is necessary to design an inner hole grinding device with eccentric adjustment.

Utility model content

The technical problem to be solved by the utility model is to provide an inner hole grinding device with eccentric adjustment, so as to solve the problem of poor quality of parts caused by the current use of three-jaw chucks to clamp parts for grinding.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: the inner hole grinding device with eccentric adjustment, including the bed of the grinding machine, the bed has a reciprocating workbench and a mounting seat, and the workbench is provided with There is a rotary positioning mechanism, and the mounting seat is provided with an eccentric adjustment grinding assembly; the rotary positioning mechanism includes a bottom plate set on the workbench, and a spindle seat, a motor seat, and a “V”-shaped positioning are arranged on the bottom plate. seat and auxiliary limit mechanism; the main shaft seat is provided with a bearing, and a rotating shaft runs through the inner ring of the bearing; the end of the rotating shaft near the "V"-shaped positioning seat is provided with a turntable, and the turntable is provided with The driving lever; the motor arranged on the motor base drives the rotation shaft to rotate; the auxiliary limit mechanism limits and positions the workpiece on the "V" shaped positioning seat.

Further, the eccentric adjustment grinding assembly includes a tailstock, a first eccentric jacket, a second eccentric jacket and an electric spindle; the tailstock is provided with a mounting hole, and the tailstock is provided with the mounting hole A connected open slot, the two sides of the open slot are provided with a first connecting portion and a second connecting portion extending outward, and a locking device connects the first connecting portion and the second connecting portion; the first connecting portion An eccentric collet is arranged in the installation hole, the second eccentric collet is arranged in the first eccentric collet, the electric spindle is arranged in the second eccentric collet; the first eccentric The jacket, the second eccentric jacket is respectively provided with a first opening clamping groove and a second opening clamping groove.

Further, the inner wall of the first eccentric jacket is also provided with a first rebound groove, and the inner wall of the second eccentric jacket is also provided with a second rebound groove; the first rebound groove and the first opening The clamping grooves are arranged oppositely, and the second resilient groove is arranged oppositely to the second opening clamping grooves.

Further, the locking device includes at least two locking bolts and a locking nut that cooperates with the locking bolts; the first connecting part and the second connecting part are provided with bolt through holes; the locking bolts A via hole passing through the first connection part and the second connection part.

Further, the "V"-shaped positioning seat includes two supporting parts arranged in parallel, and a mounting part connecting the bottom ends of the two supporting parts; the upper ends of the two supporting parts are provided with "V"-shaped positioning grooves; The center of the positioning groove is parallel to the axis of the rotating shaft.

Further, the auxiliary limit mechanism includes a vertical plate arranged on the bottom plate, two guide rails vertically arranged on the side of the vertical plate close to the “V”-shaped positioning seat, sliding with the two guide rails A connected sliding seat, and a pressing block arranged on the sliding seat.

Further, a handle is also provided on the sliding seat.

Compared with the prior art, the inner hole grinding device with eccentric adjustment has the following beneficial effects:

1. Connect the chicken heart chuck at the end of the part, and position it on the "V" shaped positioning seat, and the upper surface of the part is limited by the auxiliary limit mechanism; the motor drives the rotating shaft to rotate, and then the chicken heart chuck is rotated by the lever, so that Drive the parts to rotate; replace the traditional three-jaw chuck to clamp the workpiece. Due to the use of "V"-shaped positioning seat, it can ensure that the outer circle of the part is positioned on the "V"-shaped positioning seat, which prevents the axis of the part from deviating from the axis of the grinding head clamped on the eccentrically adjusted grinding assembly, thus ensuring The concentricity requirements of the inner hole and the outer circle after the parts are processed are specified.

Description of drawings

Fig. 1 is the front view of the inner hole grinding device with eccentric adjustment of the utility model;

Fig. 2 is a structural diagram of the rotary positioning mechanism of the inner hole grinding device with eccentric adjustment of the utility model;

Fig. 3 is a structural diagram of the eccentric adjustment grinding assembly described in the inner hole grinding device with eccentric adjustment of the utility model;

Fig. 4 is a left view of the eccentric adjustment grinding assembly of the inner hole grinding device with eccentric adjustment of the present invention;

Fig. 5 is a top view of the bed of the inner hole grinding device with eccentric adjustment of the present invention.

Detailed ways

The following specific embodiments will be further described in conjunction with the above-mentioned drawings.

In the following, numerous specific details are set forth in order to provide a thorough understanding of the concepts underlying the described embodiments. It will be apparent, however, to one skilled in the art that the described embodiments may be practiced without some or all of these specific details. In other instances, well known processing steps have not been described in detail.

As shown in Figures 1-5, the inner hole grinding device with eccentric adjustment includes the bed 3 of the grinder, and the bed 3 has a reciprocating worktable 30 and a mounting seat 31; the workbench 30 is provided with The positioning mechanism 1 is rotated, and the mounting seat 31 is provided with an eccentric adjustment grinding assembly 2 . The rotary positioning mechanism 1 includes a bottom plate 10 arranged on a workbench 30 , on which a main shaft seat 11 , a motor seat 12 , a “V”-shaped positioning seat 13 and an auxiliary limit mechanism 14 are arranged. The main shaft seat 11 is provided with a bearing 15, and a rotating shaft 16 runs through the inner ring of the bearing 15; the end of the rotating shaft 16 close to the "V" shaped positioning seat 13 is provided with a turntable 17, and the turntable 17 is provided with There is a lever 18; the motor 19 arranged on the motor seat 12 drives the rotation shaft 16 to rotate; the auxiliary limit mechanism 14 limits the workpiece positioned on the "V" shaped positioning seat 13 . In this example, the motor 19 uses a belt transmission to drive the rotating shaft 16 to rotate; specifically, the main shaft of the motor 19 is provided with a driving pulley, the rotating shaft 16 is sleeved with a driven pulley, and the driving belt is wound around the driving pulley and the rotating shaft 16. on the driven pulley. A chicken heart chuck is connected to the end of the part, and positioned on the "V" shaped positioning seat 13, the upper surface of the part is limited by the auxiliary limit mechanism 14; the motor 19 drives the rotating shaft to rotate, and then the chicken heart chuck is rotated by the lever. , so as to drive the parts to rotate; instead of the traditional three-jaw chuck to clamp the workpiece. Due to the use of the "V" shaped positioning seat 13, it can ensure that the outer circle of the part is positioned on the "V" shaped positioning seat 13, avoiding the deviation of the axis of the part from the axis of the grinding head clamped on the eccentrically adjusted grinding assembly 2 , so as to ensure the concentricity requirements of the inner hole and the outer circle after the parts are processed.

Further, an embodiment of the bed 3, the bed 3 adopts the bed of the MG1312 grinder, and the rotary positioning mechanism 1 is fixedly installed on the mobile workbench of the bed of the MG1312 grinder; the eccentric adjustment grinding assembly 2 Set the installation part for installing the grinding wheel power on the MG1312 grinder.

Furthermore, for another embodiment of the bed 3, refer to FIG. 5; the bed 3 is provided with a transverse slide 300 and a longitudinal slide 301; On the vertical platform changer 301; and the vertical platform changer 301 is located at one end of the horizontal slide table 300; the horizontal slide table 300 and the vertical table changer 301 are electric slide table, manual slide table or electric manual dual-purpose slide table.

Further, the eccentric adjustment grinding assembly 2 includes a tailstock 20 , a first eccentric jacket 21 , a second eccentric jacket 22 and an electric spindle 23 . The tailstock 20 is provided with a mounting hole, the tailstock 20 is provided with an open slot 20a communicating with the mounting hole, and the two sides of the open slot 20a are provided with a first connecting part 200 extending outward and a The second connecting part 201, a locking device 24 connects the first connecting part 200 and the second connecting part 201; the first eccentric collet 21 is arranged in the mounting hole, and the second eccentric collet The sleeve 22 is arranged in the first eccentric jacket 21, and the electric spindle 23 is arranged in the second eccentric jacket 22; the first eccentric jacket 21 and the second eccentric jacket 22 are respectively A first opening clamping groove 210 and a second opening clamping groove 220 are provided. According to the outer diameter of the part to be ground, the center position of the electric spindle 23 needs to be adjusted to ensure that the center of the grinding head clamped on the electric spindle 23 is on the same level as the axis of the part, thereby ensuring the accuracy of grinding. Concrete operation, unclamp locking device 24, make tail stock 20 unclamp first eccentric collet 21 and second eccentric collet 22, therefore can rotate first eccentric collet 21 and second eccentric collet 22, reach adjusting electric The center height of the main shaft 23, after the center height is adjusted in place, the locking device 234 locks the tailstock 20 to clamp the first eccentric jacket 21 and the second eccentric jacket 22, and to clamp the electric spindle 23. Specifically, an installation connection part is provided on one side of the tailstock 20 , and the installation connection part is fixedly connected with the bed 3 .

Further, the inner wall of the first eccentric jacket 21 is also provided with a first rebound groove 210, and the inner wall of the second eccentric jacket 22 is also provided with a second rebound groove 221; the first rebound groove 211 and The first opening clamping groove 210 is disposed opposite to each other, and the second resilient groove 221 is disposed opposite to the second opening clamping groove 220 .

Further, the locking device 24 includes at least two locking bolts and a locking nut that cooperates with the locking bolts; the first connecting portion 200 and the second connecting portion 201 are provided with bolt through holes; the Locking bolts pass through the through holes of the first connection part and the second connection part.

Further, the "V"-shaped positioning seat 13 includes two parallel supporting parts 130, and a mounting part 131 connecting the bottom ends of the two supporting parts 130; the upper ends of the two supporting parts 130 are provided with "V"-shaped Positioning slots 132 ; centers of the two positioning slots 132 are parallel to the axis of the rotating shaft 16 .

Further, the auxiliary limit mechanism 14 includes a vertical plate 140 arranged on the bottom plate 10, two guide rails 141 vertically arranged on the side of the vertical plate 140 close to the “V”-shaped positioning seat 13, A sliding seat 142 slidably connected with the two guide rails 141 , and a pressing block 143 arranged on the sliding seat 142 . When the part is positioned in the positioning groove 132, under the action of gravity, the pressure block 143 presses on the part, so it can limit the position of the part during the grinding process.

Further, a handle 1420 is also provided on the sliding seat 142; when clamping parts, it is convenient to lift the sliding seat 142.

The principle of the utility model: set a heart chuck at the end of the part that does not need to be ground, position the part on the "V" shaped positioning seat 13, and use the auxiliary limit mechanism 14 to limit the workpiece. 19 drives the rotating shaft 16 to rotate, so as to stir the parts to rotate, the electric spindle 23 drives the grinding head arranged on it to rotate at high speed, and the worktable 30 drives the rotary positioning mechanism 1 to move as a whole, thereby completing the grinding of the inner hole of the workpiece.

The utility model is not limited to the above-mentioned specific implementation manners, and various transformations made by those skilled in the art starting from the above-mentioned ideas without creative work all fall within the protection scope of the utility model.

Claims (7)

1. the inner hole grinding device with eccentric adjusting, the lathe bed including grinding machine, the lathe bed have back and forth movement workbench and Mounting base, which is characterized in that the workbench is equipped with rotary positioning mechanism, and the mounting base is equipped with eccentric adjusting grinding group Part；Institute's rotary positioning mechanism includes the bottom plate of setting on the table, is arranged on bottom plate and is equipped with spindle drum, motor cabinet, " V " shape positioning seat and auxiliary stopper mechanism；Bearing is equipped in the spindle drum, a shaft runs through the inner ring of the bearing；It is described Shaft is equipped with turntable close to one end of the " V " shape positioning seat, and the turntable is equipped with driving lever；It is arranged on the motor cabinet The rotation of shaft described in motor driven；The auxiliary stopper mechanism limit is located in the workpiece of the " V " shape positioning seat.

2. as described in claim 1 with the inner hole grinding device of eccentric adjusting, which is characterized in that the eccentric adjusting grinding group Part includes tailstock, the first eccentric collet, the second eccentric collet and electro spindle；Mounting hole is equipped in the tailstock, on the tailstock Equipped with the open slot being connected to the mounting hole, the two sides of open slot first connecting portion with outward extension and second connects Socket part, a locking device connect the first connecting portion and the second connecting portion；First cam lock is sheathed on the peace It fills in hole, second cam lock is sheathed in the described first eccentric collet, and the electro spindle is set to the described second eccentric collet It is interior；Described first eccentric collet, second cam lock, which is put on, is respectively equipped with the first opening clip slot and the second opening clip slot.

3. as claimed in claim 2 with the inner hole grinding device of eccentric adjusting, which is characterized in that in the described first eccentric collet Wall is additionally provided with the first rebound slot, and the inner wall of the described second eccentric collet is additionally provided with the second rebound slot；The first rebound slot and institute It states the first opening clip slot to be oppositely arranged, the second rebound slot is oppositely arranged with the second opening clip slot.

4. as claimed in claim 3 with the inner hole grinding device of eccentric adjusting, which is characterized in that the locking device includes extremely Few two clamping screws and the locking nut cooperated with clamping screw；It is equipped in the first connecting portion and the second connecting portion Bolt through-hole；The clamping screw passes through the via hole of the first connecting portion and the second connecting portion.

5. the inner hole grinding device according to any one of claims 1-4 with eccentric adjusting, which is characterized in that the " V " shape Positioning seat includes two support portions disposed in parallel, and the mounting portion of the two support portion bottom ends of connection；Two support portions Upper end is equipped with the locating slot of " V " shape；The center of two locating slots and the axis parallel of the shaft.

6. as claimed in claim 5 with the inner hole grinding device of eccentric adjusting, which is characterized in that auxiliary stopper mechanism packet Include be set to the bottom plate on vertical plate, vertically be set to the vertical plate close to the side of the " V " shape positioning seat two guide rails, with The slide that two guide rails are slidably connected, and the briquetting being arranged on the slide.

7. as claimed in claim 6 with the inner hole grinding device of eccentric adjusting, which is characterized in that be additionally provided with hand on the slide Handle.