CN215036506U

CN215036506U - Tool for grinding bearing ring

Info

Publication number: CN215036506U
Application number: CN202120759962.0U
Authority: CN
Inventors: 雷祯亚; 邱晓华; 雷强
Original assignee: Sichuan Liyuan Precision Technology Co ltd
Current assignee: Sichuan Liyuan Precision Technology Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-12-07
Anticipated expiration: 2031-04-14

Abstract

The utility model provides a frock is used in bearing ring grinding relates to machining equipment technical field. The tool for grinding the bearing ring comprises a fixing column, a cover plate, a pressing plate, a telescopic rod and a driving mechanism. The upper end opening of fixed column has an accommodation space in. The upper end opening part of fixed column is provided with the internal thread, and the upper portion of apron has set firmly to revolve twists the portion, and the lower part has set firmly connecting portion, and connecting portion are provided with the external screw thread that matches with the internal thread. Four clamp plates circumference and equidistant ground set up in the outside of fixed column. The lateral wall of fixed column offers the jack that matches with the telescopic link, and the jack sets up along the radial of fixed column. One end of the telescopic rod penetrates through the jack and extends into the accommodating space, and the other end of the telescopic rod is fixed in the middle of the pressing plate. Actuating mechanism sets up in accommodation space to the radial movement of drive telescopic link along the fixed column. After one-time clamping, the grinding of the excircle and the end face of the workpiece can be carried out.

Description

Tool for grinding bearing ring

Technical Field

The utility model belongs to the technical field of machining equipment technique and specifically relates to a frock is used in bearing ring grinding is related to.

Background

Before the bearing ring is assembled, the outer circumference and the end face of the bearing ring need to be ground, so that the surface roughness of the outer circumference and the end face of the bearing ring meets the assembly requirement. The existing tool can only grind the outer circumference or the end face of the bearing ring after clamping the bearing ring once, and can finish grinding the outer circumference and the end face of the bearing ring by clamping for many times, so that the processing efficiency is reduced, and the processing precision is not easy to guarantee.

Disclosure of Invention

In order to the above situation, the utility model provides a frock is used in bearing ring grinding has solved current frock and has needed a lot of clamping just can accomplish the technical problem to the outer circumference of bearing ring and end face grinding.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a frock is used in bearing ring grinding, mainly can include: fixed column, apron, clamp plate, telescopic link and actuating mechanism.

The upper end opening of fixed column has an accommodation space in. The upper end opening part of fixed column is provided with the internal thread, and the upper portion of apron has set firmly to revolve twists the portion, and the lower part has set firmly connecting portion, and connecting portion are provided with the external screw thread that matches with the internal thread.

Four clamp plates circumference and equidistant ground set up in the outside of fixed column. The lateral wall of fixed column offers the jack that matches with the telescopic link, and the jack sets up along the radial of fixed column. One end of the telescopic rod penetrates through the jack and extends into the accommodating space, and the other end of the telescopic rod is fixed in the middle of the pressing plate.

Actuating mechanism sets up in accommodation space to the radial movement of drive telescopic link along the fixed column.

Through the setting of apron, can avoid during grinding fluid directly gets into the fixed column, conveniently maintain actuating mechanism after unscrewing the apron again. Four clamp plates circumference and equidistant ground set up in the outside of fixed column for the clamp plate is under telescopic link and actuating mechanism's drive, along the radial movement of fixed column, so that adjust the position of clamp plate according to the diameter size of work piece, four clamp plates press tightly and can fix the work piece in the work piece inboard, and work piece terminal surface and excircle department do not have the sheltering from, so that carry out the grinding of work piece excircle and terminal surface after a clamping.

In some embodiments of the present invention, the driving mechanism includes: driving motor, lead screw, screw nut and drive block.

Driving motor installs in accommodation space, and the lead screw passes through the bearing frame and radially sets up in accommodation space along the fixed column, and driving motor's output shaft passes through drive assembly and lead screw connection.

Screw nut links to each other with the lead screw matching, and the drive block sets firmly in the upside of lead screw, and the one end of telescopic link passes through coupling assembling with the drive block and links to each other. The lead screw nut is connected with the rotation limiting assembly so that the lead screw nut can move along the length direction of the lead screw.

Under the drive of the driving motor, the screw nut is limited by the limiting component and moves along the length direction of the screw so as to drive the telescopic rod and the pressing plate to move, and the position of the pressing plate can be conveniently adjusted according to the diameter of the workpiece.

In some embodiments of the present invention, the rotation limiting assembly includes a connecting rod, a slider, a sliding rail and a bracket. The lower side of the screw nut is fixed with a connecting rod, a sliding block is fixed on the connecting rod, the sliding block is connected with a sliding rail matched with the sliding block in a sliding mode, and the sliding rail is fixed in the accommodating space through a support.

The rotation of the screw nut is limited by the slide block and the slide rail, and the screw nut moves along the length direction of the screw under the driving of the driving motor.

In some embodiments of the present invention, the transmission assembly includes a first transmission shaft, a speed reducer, a worm wheel, a second transmission shaft, a driving bevel gear, a driven bevel gear, and a third transmission shaft. One end of the first transmission shaft is connected with an output shaft of the driving motor through a coupler, and the other end of the first transmission shaft is connected with an input end of the speed reducer. One end of the worm is connected with the output end of the speed reducer, the other end of the worm is meshed with the worm wheel, the worm wheel is fixed on the lower portion of the second transmission shaft, and the driving bevel gear is fixed on the upper portion of the second transmission shaft. The number of the driven bevel gears is four, the four driven bevel gears are respectively meshed with one side of the driving bevel gear, and the driven bevel gears are fixed on the third transmission shaft.

The driving motor can synchronously drive the four pressing plates to move, and the worm wheel can realize self-locking so as to fix the pressing plates at the designated positions.

In some embodiments of the present invention, the bottom of the driving motor is provided with a shock pad, and the shock pad is fixed to the bottom of the accommodating space.

The setting of shock pad can reduce the vibration of motor during operation to the fixed column transmission.

In some embodiments of the present invention, the sound-absorbing board is bonded to the inner wall of the fixing column.

The arrangement of the sound-absorbing board can effectively reduce the noise of a workshop.

In some embodiments of the present invention, the connecting assembly includes a guide cylinder and a pressure spring. One end of the guide cylinder is fixed on the driving block, the other end of the guide cylinder is provided with a guide hole matched with the telescopic rod, and one end of the telescopic rod is inserted into the guide hole. The pressure spring sets up in the guiding hole, and the both ends of pressure spring are fixed in drive block and telescopic link respectively.

The arrangement of the guide cylinder and the pressure spring enables the telescopic rod to move along the radial direction of the fixed column better, and the condition that the workpiece is crushed by the pressure plate can be avoided.

In some embodiments of the present invention, the above-mentioned telescopic rod is provided with a linkage portion, and the guide cylinder is provided with a notch for allowing the linkage portion to move left and right. The driving block is provided with a displacement sensor, and the movable end of the displacement sensor is fixedly connected with the linkage part. The fixing column is provided with a control device and a power supply, and the power supply is used for supplying power to the control device. The control device is internally provided with a PLC (programmable logic controller), the output end of the displacement sensor is electrically connected with the input end of the PLC, and the output end of the PLC is electrically connected with the control end of the driving motor.

The pressure plate is abutted to the inner circumference of the bearing ring under the driving of the driving motor, the lead screw nut continuously approaches to the bearing ring, at the moment, the distance between the driving block and the linkage part is reduced, the pressure spring is in a compression state, the displacement sensor transmits detected data to the control device, and when the detected data is larger than a preset threshold value (namely the distance between the driving block and the linkage part is too small), the control device enables the driving motor to stop acting so as to avoid damaging the bearing ring.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

1. through the setting of apron, can avoid during grinding fluid directly gets into the fixed column, conveniently maintain actuating mechanism after unscrewing the apron again. Four clamp plates circumference and equidistant ground set up in the outside of fixed column for the clamp plate is under telescopic link and actuating mechanism's drive, along the radial movement of fixed column, so that adjust the position of clamp plate according to the diameter size of work piece, four clamp plates press tightly and can fix the work piece in the work piece inboard, and work piece terminal surface and excircle department do not have the sheltering from, so that carry out the grinding of work piece excircle and terminal surface after a clamping.

2. The driving motor can synchronously drive the four pressing plates to move, and the worm wheel can realize self-locking so as to fix the pressing plates at the designated positions.

3. The pressure plate is abutted to the inner circumference of the bearing ring under the driving of the driving motor, the lead screw nut continues to approach the bearing ring, at the moment, the distance between the driving block and the linkage part is reduced, the pressure spring is in a compression state, the displacement sensor transmits detected data to the control device, and when the detected data is larger than a preset threshold value, the control device enables the driving motor to stop acting so as to avoid damaging the bearing ring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tool for grinding a bearing ring according to an embodiment of the present invention;

fig. 2 is a sectional view taken along a-a of fig. 1.

Icon: 11-fixed column, 111-containing space, 112-jack, 12-cover plate, 121-screwing part, 13-pressing plate, 14-telescopic rod, 151-driving motor, 152-lead screw, 153-lead screw nut, 154-driving block, 161-connecting rod, 162-sliding block, 163-sliding rail, 164-bracket, 171-first transmission shaft, 172-speed reducer, 173-worm, 174-worm wheel, 175-second transmission shaft, 176-driving bevel gear, 177-driven bevel gear, 178-third transmission shaft, 181-guide cylinder, 182-pressure spring, 183-guide hole, 184-linkage part, 185-notch, 186-displacement sensor, 187-control device, 188-power supply, 191-shock pad, 192-sound absorbing panel.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "upper", "lower", "left", "right", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like are used in the orientation or positional relationship indicated on the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-2, the present embodiment provides a tool for grinding a bearing ring, which mainly includes: the device comprises a fixed column 11, a cover plate 12, a pressing plate 13, a telescopic rod 14 and a driving mechanism.

The upper end of the fixing column 11 is opened, and an accommodating space 111 is arranged in the fixing column. The upper end opening part of fixed column 11 is provided with the internal thread, and the upper portion of apron 12 has set firmly to twist portion 121, and the lower part has set firmly connecting portion, and connecting portion are provided with the external screw thread that matches with the internal thread.

The four pressing plates 13 are circumferentially and equidistantly arranged on the outer sides of the fixing columns 11. The lateral wall of fixed column 11 is seted up the jack 112 that matches with telescopic link 14, and jack 112 sets up along fixed column 11's radial. One end of the telescopic rod 14 passes through the insertion hole 112 and extends into the accommodating space 111, and the other end is fixed at the middle part of the pressing plate 13.

The driving mechanism is disposed in the accommodating space 111 to drive the telescopic rod 14 to move along the radial direction of the fixed column 11.

Through the setting of apron 12, can avoid during grinding fluid directly gets into fixed column 11, conveniently maintain, maintain actuating mechanism again after unscrewing apron 12. Four clamp plates 13 circumference and equidistant ground set up in the outside of fixed column 11 for clamp plate 13 is under telescopic link 14 and actuating mechanism's drive, along fixed column 11's radial movement, so that adjust the position of clamp plate 13 according to the diameter size of work piece, four clamp plates 13 sticiss and can fix the work piece in the work piece inboard, work piece terminal surface and excircle department do not have the shelter from, so that carry out the grinding of work piece excircle and terminal surface after a clamping.

Specifically, the method comprises the following steps:

the drive mechanism includes: a drive motor 151, a lead screw 152, a lead screw nut 153, and a drive block 154.

The driving motor 151 is installed in the accommodating space 111, the lead screw 152 is arranged in the accommodating space 111 along the radial direction of the fixing column 11 through a bearing seat, and an output shaft of the driving motor 151 is connected with the lead screw 152 through a transmission assembly.

The screw nut 153 is connected with the screw 152 in a matching way, the driving block 154 is fixedly arranged on the upper side of the screw 152, and one end of the telescopic rod 14 is connected with the driving block 154 through a connecting component. The lead screw nut 153 is coupled to a rotation limiting assembly such that the lead screw nut 153 moves along the length of the lead screw 152.

Under the driving of the driving motor 151, the lead screw nut 153 is limited by the limiting component and moves along the length direction of the lead screw 152 to drive the telescopic rod 14 and the pressing plate 13 to move, so that the position of the pressing plate 13 can be adjusted according to the diameter of the workpiece.

The rotation limiting assembly includes a connecting rod 161, a slider 162, a slide rail 163, and a bracket 164. A connecting rod 161 is fixed on the lower side of the screw nut 153, a sliding block 162 is fixed on the connecting rod 161, the sliding block 162 is slidably connected with a sliding rail 163 matched with the sliding block, and the sliding rail 163 is fixed in the accommodating space 111 through a bracket 164.

The rotation of the screw nut 153 is restricted by the slider 162 and the slide rail 163, and is moved in the longitudinal direction of the screw 152 by the driving motor 151.

The driving assembly includes a first driving shaft 171, a reducer 172, a worm 173, a worm wheel 174, a second driving shaft 175, a driving bevel gear 176, a driven bevel gear 177, and a third driving shaft 178. One end of the first transmission shaft 171 is coupled to an output shaft of the driving motor 151, and the other end is coupled to an input end of the speed reducer 172. One end of the worm 173 is connected to an output end of the reducer 172, and the other end is engaged with the worm wheel 174, the worm wheel 174 is fixed to a lower portion of the second transmission shaft 175, and the drive bevel gear 176 is fixed to an upper portion of the second transmission shaft 175. Four driven bevel gears 177 are provided, the four driven bevel gears 177 are respectively engaged with one side of the drive bevel gear 176, and the driven bevel gears 177 are fixed to the third transmission shaft 178. The driving motor 151 can synchronously drive the four pressing plates 13 to move, and the worm 173 and the worm wheel 174 can realize self-locking so as to fix the pressing plates 13 at the specified positions.

When the tool for grinding the bearing ring is used, the bearing ring is sleeved outside the fixed column 11, the four pressing plates 13 are located in the bearing ring, the driving motor 151 is started again, the four pressing plates 13 extend out and are pressed on the inner side surface of the bearing ring, and at the moment, the outer circumference and the upper and lower end faces of the bearing ring are not shielded, so that the outer circle and the end faces of the bearing ring can be conveniently ground.

The connecting assembly includes a guide cylinder 181 and a compression spring 182. One end of the guide cylinder 181 is fixed on the driving block 154, the other end is provided with a guide hole 183 matched with the telescopic rod 14, and one end of the telescopic rod 14 is inserted into the guide hole 183. The compression spring 182 is disposed in the guide hole 183, and both ends of the compression spring 182 are fixed to the driving block 154 and the telescopic rod 14, respectively. Due to the arrangement of the guide cylinder 181 and the pressure spring 182, the telescopic rod 14 can better move along the radial direction of the fixed column 11, and the situation that the workpiece is crushed by the pressure plate 13 can be avoided.

The telescopic rod 14 is fixedly provided with a linkage part 184 in the radial direction, and the guide cylinder 181 is provided with a notch 185 for the linkage part 184 to move left and right. The driving block 154 is provided with a displacement sensor 186, and the movable end of the displacement sensor 186 is fixedly connected with the linkage part 184. The fixed column 11 is provided with a control device 187 and a power supply 188, and the power supply 188 is used for supplying power to the control device 187. The control device 187 has a PLC controller therein, and the output terminal of the displacement sensor 186 is electrically connected to the input terminal of the PLC controller, and the output terminal of the PLC controller is electrically connected to the control terminal of the driving motor 151. After the pressing plate 13 abuts against the inner circumference of the bearing ring under the driving of the driving motor 151, the lead screw nut 153 continues to approach the bearing ring, at this time, the distance between the driving block 154 and the linkage portion 184 decreases, the compression spring 182 is in a compressed state, the displacement sensor 186 transmits the detected data to the control device 187, and when the detected data is larger than the preset threshold value (i.e., the distance between the driving block 154 and the linkage portion 184 is too small), the control device 187 stops the driving motor 151 so as to prevent the bearing ring from being damaged.

The bottom of the driving motor 151 is provided with a shock pad 191, and the shock pad 191 is fixed to the bottom of the accommodating space 111. The vibration that the motor during operation transmitted to fixed column 11 can be reduced to the setting of shock pad 191. The inner wall of the fixing post 11 is bonded with a sound absorbing plate 192. Due to the arrangement of the sound-absorbing plates 192, noise of a workshop can be effectively reduced.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a frock is used in bearing ring grinding which characterized in that includes: the device comprises a fixing column, a cover plate, a pressing plate, a telescopic rod and a driving mechanism;

the upper end of the fixing column is opened, and an accommodating space is formed in the fixing column; an internal thread is arranged at an opening at the upper end of the fixing column, a screwing part is fixedly arranged at the upper part of the cover plate, a connecting part is fixedly arranged at the lower part of the cover plate, and the connecting part is provided with an external thread matched with the internal thread;

the four pressing plates are circumferentially arranged on the outer sides of the fixing columns at equal intervals; the side wall of the fixed column is provided with an insertion hole matched with the telescopic rod, and the insertion hole is arranged along the radial direction of the fixed column; one end of the telescopic rod penetrates through the jack and extends into the accommodating space, and the other end of the telescopic rod is fixed in the middle of the pressing plate;

the driving mechanism is arranged in the accommodating space to drive the telescopic rod to move along the radial direction of the fixed column.

2. The tool for grinding a bearing ring according to claim 1, wherein the driving mechanism includes: the device comprises a driving motor, a lead screw nut and a driving block;

the driving motor is installed in the accommodating space, the lead screw is arranged in the accommodating space along the radial direction of the fixed column through a bearing seat, and an output shaft of the driving motor is connected with the lead screw through a transmission assembly;

the screw nut is connected with the screw in a matching way, the driving block is fixedly arranged on the upper side of the screw, and one end of the telescopic rod is connected with the driving block through a connecting assembly; the lead screw nut is connected with a rotation limiting assembly so that the lead screw nut can move along the length direction of the lead screw.

3. The tool for grinding the bearing ring according to claim 2, wherein the rotation limiting assembly comprises a connecting rod, a sliding block, a sliding rail and a bracket; the lower side of the screw nut is fixedly provided with a connecting rod, a sliding block is fixed on the connecting rod, the sliding block is connected with a sliding rail matched with the sliding block in a sliding mode, and the sliding rail is fixed in the accommodating space through a support.

4. The tool for grinding a bearing ring according to claim 2, wherein the transmission assembly comprises a first transmission shaft, a speed reducer, a worm wheel, a second transmission shaft, a drive bevel gear, a driven bevel gear and a third transmission shaft; one end of the first transmission shaft is connected with an output shaft of the driving motor through a coupler, and the other end of the first transmission shaft is connected with an input end of the speed reducer; one end of the worm is connected with the output end of the speed reducer, the other end of the worm is meshed with the worm wheel, the worm wheel is fixed on the lower portion of the second transmission shaft, and the driving bevel gear is fixed on the upper portion of the second transmission shaft; the number of the driven bevel gears is four, the four driven bevel gears are respectively meshed with one side of the driving bevel gear, and the driven bevel gears are fixed on the third transmission shaft.

5. The tool for grinding a bearing ring according to claim 2, wherein a shock pad is arranged at the bottom of the driving motor and fixed to the bottom of the accommodating space.

6. The tool for grinding the bearing ring according to claim 1, wherein an acoustic panel is bonded to an inner wall of the fixing column.

7. A bearing ring grinding tool according to any one of claims 2 to 5, wherein the connecting assembly comprises a guide cylinder and a compression spring; one end of the guide cylinder is fixed on the driving block, the other end of the guide cylinder is provided with a guide hole matched with the telescopic rod, and one end of the telescopic rod is inserted into the guide hole; the pressure spring is arranged in the guide hole, and two ends of the pressure spring are respectively fixed on the driving block and the telescopic rod.

8. The tool for grinding the bearing ring according to claim 7, wherein a linkage part is fixedly arranged on the telescopic rod in the radial direction, and a notch for enabling the linkage part to move left and right is formed in the guide cylinder; a displacement sensor is arranged on the driving block, and the movable end of the displacement sensor is fixedly connected with the linkage part; the fixing column is provided with a control device and a power supply, and the power supply is used for supplying power to the control device; the control device is internally provided with a PLC (programmable logic controller), the output end of the displacement sensor is electrically connected with the input end of the PLC, and the output end of the PLC is electrically connected with the control end of the driving motor.