CN218697897U - Positioning fixture for shaft sleeve machining - Google Patents

Abstract

The utility model discloses a positioning fixture is used in axle sleeve processing relates to axle sleeve processing technology field, including workstation, power pack, power transmission unit, anchor clamps mobile unit and removable friction pad unit, workstation bottom four corners is provided with the support respectively, and power pack installs in the bottom of support, and power pack and power transmission unit connection, and anchor clamps mobile unit contains bevel gear four, screw shaft one, slider, slide and presss from both sides tight piece, the slide opening has been seted up at the workstation middle part, the side annular array of slide opening has seted up three slide along slide opening radial distribution, and sliding connection has the slider in every slide respectively, and the top of slider is provided with and presss from both sides tight piece, three fan-shaped logical groove has been seted up to the one end that the slide opening was kept away from to corresponding slide on the workstation, rotates respectively in every slide and connects screw shaft one, and the centre gripping is effectual, and the centre gripping is stable, can adjust the mode of centre gripping and carry out the centre gripping to the axle sleeve inner wall, great improvement production efficiency.

Description

Positioning fixture for shaft sleeve machining

Technical Field

The utility model relates to an axle sleeve processing technology field specifically is an axle sleeve processing positioning fixture.

Background

In the production process, a plurality of rotating parts need to use rolling bearings, but in order to reduce the expenditure and save the cost, the shaft sleeve can be used for replacing the rolling bearings to operate under the environment that the rotation of the machine is low and the requirement on the clearance is relatively low;

the positioning clamp for processing the shaft sleeve, which is provided by the prior art with the grant publication number of CN215238356U, comprises a positioning base, wherein the bottom of the positioning base is arranged in a through manner, a bottom plate is arranged on the bottom wall of the positioning base, an adjusting cavity is arranged between the bottom plate and the positioning base, an adjusting component is arranged in the adjusting cavity and comprises a movable shaft, and a movable sleeve is inserted through the side edge of the positioning base;

the clamping effect is poor, the clamping is unstable, the two-way clamping cannot be conveniently carried out on the outer wall and the inner wall of the shaft sleeve, the practicability of the device is greatly reduced, and the positioning clamp for machining the shaft sleeve is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a positioning fixture is used in axle sleeve processing, the centre gripping is effectual, and the centre gripping is stable, can carry out the centre gripping to the axle sleeve inner wall, promotes production efficiency, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a positioning clamp for processing a shaft sleeve comprises a workbench, a power unit, a power transmission unit, a clamp moving unit and a replaceable friction pad unit;

a workbench: the four corners of the bottom are respectively provided with a bracket;

a power unit: the power unit is arranged at the bottom of the bracket and is connected with the power transmission unit;

a jig moving unit: contain bevel gear four, threaded shaft one, slider, slide and press from both sides tight piece, the slide opening has been seted up at the workstation middle part, the side annular array of slide opening has been seted up three slide along the radial distribution of slide opening, and sliding connection has the slider respectively in every slide, and the top of slider is provided with and presss from both sides tight piece, the one end that the slide opening was kept away from to corresponding the slide on the workstation has been seted up three fan-shaped logical groove, rotates connection threaded shaft one in every slide respectively, threaded shaft one and the screw threaded connection of slider side, the tip of threaded shaft one extends to fan-shaped logical inslot and fixed connection bevel gear four, and three bevel gear four is connected with the power transmission unit respectively. The workbench supports the main components, the power unit is used for providing power, the clamp moving unit can control the clamp to clamp and loosen, the power unit transmits the power to the bevel gear IV, the bevel gear IV rotates to drive the connected threaded shaft I to rotate in a threaded hole of the sliding block, and the threaded shaft is axially fixed on the workbench, so that the sliding block is driven to slide on the sliding way when the threaded shaft I rotates, and meanwhile, the clamping block above the sliding way is driven to move.

Further, the power unit contains motor support, motor one and motor two, the lower extreme middle part of support is equipped with the motor support of transversely placing, motor support's upper end middle part is equipped with motor two, motor support's upper end left side is equipped with motor one, motor one and motor two's input are connected through outside PLC controller and external power source's output electricity. The motor bracket supports a first motor and a second motor, output shafts of the first motor and the second motor provide power to the outside, and input ends of the first motor and the second motor are electrically connected with an external power supply through an external PLC.

Furthermore, the power transmission unit comprises a first bevel gear, a second bevel gear, a connecting rod, a third bevel gear, a connecting sleeve and a supporting frame, the lower end of the workbench is fixedly connected with the vertical part of the L-shaped supporting frame, the left end of the supporting frame is rotatably connected with the outer peripheral side of the connecting sleeve through a bearing, the upper end of the connecting sleeve is provided with the third bevel gear, the top of the third bevel gear is respectively meshed with the three fourth bevel gears, the lower end of the connecting sleeve is fixedly connected with the second bevel gear through the connecting rod, the output shaft of the first motor is fixedly connected with one end of the first bevel gear, and the first bevel gear is meshed with the second bevel gear. An output shaft of the first motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear meshed with the first bevel gear to rotate, the second bevel gear transmits power to the third bevel gear through the connecting rod and the transmission sleeve, and the third bevel gear rotates to drive the fourth bevel gear, so that the clamp is opened and closed.

Further, the clamp moving unit further comprises a spring, one end of the sliding block is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with one end, far away from the sliding hole, of the sliding way. The both ends fixed connection of spring slider and slide, when the slider was too near apart from the both ends of slide, the spring was done the buffering to the slider motion, prevented to damage anchor clamps and the axle sleeve of processing because power is too big.

Further, removable friction pad unit contains friction pad one, friction pad two, friction pad support and dovetail groove, press from both sides the vertical friction pad support lower extreme of the upper end fixed connection of tight piece, vertical dovetail groove has been seted up respectively at the inboard and the outside middle part of friction pad support, the inboard middle part of friction pad one is provided with vertical dovetail slide, the outside middle part of friction pad two is provided with vertical dovetail slide, friction pad one slides the joint through dovetail slide and the dovetail groove in the friction pad support outside, friction pad two passes through dovetail slide and the inboard dovetail groove of friction pad support and slides the joint. The first friction pad and the second friction pad slide with the dovetail sliding groove on the friction pad bracket through the sliding block at the tail part, so that the function of replacing the friction pads is realized.

Further, still include the positioning unit, the positioning unit contains rotation axis, threaded shaft two, location hollow shaft and spacing, the lower extreme of output shaft fixed connection rotation axis of motor two, the upper end of rotation axis passes bevel gear two and the middle part of adapter sleeve and the lower extreme of fixed connection threaded shaft two in proper order, vertical sliding connection has the location hollow shaft in the slide opening, the top of threaded shaft two and the inboard screw thread through-hole threaded connection of location hollow shaft, the periphery side annular array of location hollow shaft has the spacing, the inner wall of slide opening is equipped with the scarce groove with the vertical sliding connection of spacing. The output shaft of the second motor transmits power to the second threaded shaft through the rotating shaft, the second threaded shaft rotates to drive the positioning hollow shaft in threaded connection with the second threaded shaft to longitudinally move, positioning during shaft sleeve processing is achieved, and the limiting strips prevent the positioning hollow shaft from rotating along with the second threaded shaft under the action of friction force.

Compared with the prior art, the beneficial effects of the utility model are that: this positioning fixture is used in axle sleeve processing has following benefit:

1. the positioning fixture for processing the shaft sleeve is provided with the positioning unit, the positioning hollow shaft is driven to longitudinally move by the driving of the motor II, the positioning hollow shaft extends out when positioning is needed, and the positioning hollow shaft retracts after positioning.

2. This positioning fixture is used in axle sleeve processing has set up removable friction pad unit, through detachable friction pad one and friction pad two, can quick replacement friction pad, presss from both sides tightly to the axle sleeve that needs processing.

3. This positioning fixture is used in axle sleeve processing, the centre gripping is effectual, and the centre gripping is stable, can adjust the mode of centre gripping and carry out the centre gripping to the axle sleeve inner wall, great improvement production efficiency, promoted the practicality of device.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic bottom structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

fig. 4 is a schematic view of the local two-structure of the present invention.

In the figure: the device comprises a support 1, a workbench 2, a power unit 3, a motor support 31, a motor support 32, a motor support 33, a power transmission unit 4, a bevel gear 41, a bevel gear 42, a connecting rod 43, a bevel gear 44, a bevel gear 45 connecting sleeve, a supporting frame 46, a clamp moving unit 5, a bevel gear 51, a threaded shaft 52, a sliding block 53, a slideway 54, a spring 55, a clamping block 56, a positioning unit 6, a rotating shaft 61, a threaded shaft 62, a hollow shaft 63, a limiting strip 64, a replaceable friction pad 7, a friction pad 71, a friction pad 72, a friction pad support 73 and a dovetail sliding groove 74.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment provides a technical solution: a positioning clamp for processing a shaft sleeve comprises a workbench 2, a power unit 3, a power transmission unit 4, a clamp moving unit 5 and a replaceable friction pad unit 7;

the working table 2: the four corners of the bottom are respectively provided with a bracket 1. The table 2 supports the main components.

A power unit 3: is installed at the bottom of the stand 1, and the power unit 3 is connected with the power transmission unit 4. The power unit 3 is used for providing power.

The power unit 3 comprises a motor support 31, a first motor 32 and a second motor 33, the middle of the lower end of the support 1 is provided with the motor support 31 which is transversely placed, the middle of the upper end of the motor support 31 is provided with the second motor 33, the left side of the upper end of the motor support 31 is provided with the first motor 32, and the input ends of the first motor 32 and the second motor 33 are electrically connected with the output end of an external power supply through an external PLC. The motor bracket 31 supports a first motor 32 and a second motor 33, output shafts of the first motor 32 and the second motor 33 provide power to the outside, and input ends of the first motor 32 and the second motor 33 are electrically connected with an external power supply through an external PLC.

The jig moving unit 5: contain four bevel gears 51, screw spindle one 52, slider 53, slide 54 and clamp tight piece 56, the slide opening has been seted up at workstation 2 middle part, three slide 54 along the radial distribution of slide opening has been seted up to the side annular array of slide opening, sliding connection has slider 53 in every slide 54 respectively, the top of slider 53 is provided with and presss from both sides tight piece 56, three fan-shaped logical groove has been seted up to the one end that the slide 54 kept away from the slide opening on the workstation 2, rotate respectively in every slide 54 and connect screw spindle one 52, the screw threaded connection of screw spindle one 52 and slider 53 side, the tip of screw spindle one 52 extends to fan-shaped logical inslot and fixed connection bevel gear four 51, three bevel gear four 51 is connected with power transmission unit 4 respectively. The clamp moving unit 5 can control the clamp to clamp and unclamp, the power unit 3 transmits power to the bevel gear four 51, the bevel gear four 51 rotates to drive the connected threaded shaft one 52 to rotate in the threaded hole of the sliding block 53, and because the threaded shaft one 52 is axially fixed on the workbench 2, the threaded shaft one 52 drives the sliding block 53 to slide on the slideway 54 when rotating, and simultaneously drives the clamping block 56 above the slideway 54 to move.

The clamp moving unit 5 further comprises a spring 55, one end of the slider 53 is fixedly connected with one end of the spring 55, and the other end of the spring 55 is fixedly connected with one end of the slide 54 far away from the slide hole. The two ends of the spring 55 are fixedly connected with the sliding block 53 and the sliding way 54, and when the sliding block 53 is too close to the two ends of the sliding way 54, the spring 55 buffers the movement of the sliding block 53, so that the clamp and the processed shaft sleeve are prevented from being damaged due to too large power.

The power transmission unit 4 comprises a first bevel gear 41, a second bevel gear 42, a connecting rod 43, a third bevel gear 44, a connecting sleeve 45 and a supporting frame 46, the lower end of the workbench 2 is fixedly connected with the vertical part of the L-shaped supporting frame 46, the left end of the supporting frame 46 is rotatably connected with the outer peripheral side of the connecting sleeve 45 through a bearing, the upper end of the connecting sleeve 45 is provided with the third bevel gear 44, the top of the third bevel gear 44 is respectively meshed with three fourth bevel gears 51, the lower end of the connecting sleeve 45 is fixedly connected with the second bevel gear 42 through the connecting rod 43, the output shaft of the motor one 32 is fixedly connected with one end of the first bevel gear 41, and the first bevel gear 41 is meshed with the second bevel gear 42. An output shaft of the motor I32 drives the bevel gear I41 to rotate, the bevel gear I41 drives the bevel gear II 42 meshed with the bevel gear I to rotate, the bevel gear II 42 transmits power to the bevel gear III 44 through the connecting rod 43 and the connecting sleeve 45, and the bevel gear III 44 rotates to drive the bevel gear IV 51, so that the clamp is opened and closed.

The replaceable friction pad unit 7 comprises a first friction pad 71, a second friction pad 72, a friction pad support 73 and a dovetail sliding groove 74, the upper end of the clamping block 56 is fixedly connected with the lower end of the vertical friction pad support 73, the vertical dovetail sliding grooves 74 are respectively formed in the middle of the inner side and the outer side of the friction pad support 73, a vertical dovetail sliding block is arranged in the middle of the inner side of the first friction pad 71, a vertical dovetail sliding block is arranged in the middle of the outer side of the second friction pad 72, the first friction pad 71 is in sliding clamping connection with the dovetail sliding groove 74 in the outer side of the friction pad support 73 through the dovetail sliding block, and the second friction pad 72 is in sliding clamping connection with the dovetail sliding groove 74 in the inner side of the friction pad support 73 through the dovetail sliding block. The first friction pad 71 and the second friction pad 72 slide with the dovetail slide groove 74 on the friction pad bracket 73 through the slide block at the tail part, so that the function of replacing the friction pads is realized.

Still include positioning unit 6, positioning unit 6 contains rotation axis 61, two threaded shaft 62, location hollow shaft 63 and spacing 64, the lower extreme of two 33 output shaft fixed connection rotation axis 61 of motor, the upper end of rotation axis 61 passes the middle part of two bevel gear 42 and adapter sleeve 45 in proper order and the lower extreme of two 62 of fixed connection threaded shaft, vertical sliding connection has location hollow shaft 63 in the slide opening, the top of two 62 of threaded shaft and the inboard screw through-hole threaded connection of location hollow shaft 63, the periphery side annular array of location hollow shaft 63 has spacing 64, the inner wall of slide opening is equipped with the scarce groove with the vertical sliding connection of spacing 64. The output shaft of the second motor 33 transmits power to the second threaded shaft 62 through the rotating shaft 61, the second threaded shaft 62 rotates to drive the positioning hollow shaft 63 in threaded connection with the second threaded shaft to longitudinally move, positioning during shaft sleeve machining is achieved, and the limiting strip 64 prevents the positioning hollow shaft 63 from rotating along with the second threaded shaft 62 under the action of friction force.

The utility model provides a pair of positioning fixture is used in axle sleeve processing's theory of operation as follows: the workbench 2 plays a role in supporting main components, the power unit 3 is used for providing power, the motor bracket 31 supports the first motor 32 and the second motor 33, output shafts of the first motor 32 and the second motor 33 provide power outwards, input ends of the first motor 32 and the second motor 33 are electrically connected with an external power supply through an external PLC (programmable logic controller), the clamp moving unit 5 can control clamping and loosening of the clamp, the power unit 3 transmits the power to the bevel gear four 51, the bevel gear four 51 rotates to drive the connected first threaded shaft 52 to rotate in a threaded hole of the sliding block 53, and as the first threaded shaft 52 is axially fixed on the workbench 2, therefore, when the first screw shaft 52 rotates, the sliding block 53 is driven to slide on the slideway 54, and simultaneously the clamping block 56 above the slideway 54 is driven to move, the two ends of the spring 55 are fixedly connected with the sliding block 53 and the slideway 54, when the slide block 53 is too close to the two ends of the slide way 54, the spring 55 buffers the motion of the slide block 53 to prevent the clamp and the processed shaft sleeve from being damaged due to too large power, the output shaft of the motor I32 drives the bevel gear I41 to rotate, the bevel gear I41 drives the bevel gear II 42 meshed with the bevel gear I to rotate, the bevel gear II 42 transmits the power to the bevel gear III 44 through the connecting rod 43 and the transmission sleeve 45, the bevel gear III 44 rotates to drive the bevel gear IV 51, therefore, the clamp is opened and closed, the first friction pad 71 and the second friction pad 72 slide with the dovetail sliding groove 74 on the friction pad support 73 through the sliding block at the tail part, the function of replacing the friction pads is achieved, the power is transmitted to the second threaded shaft 62 through the output shaft of the second motor 33 through the rotating shaft 61, the second threaded shaft 62 rotates to drive the positioning hollow shaft 63 in threaded connection with the second threaded shaft to longitudinally move, the positioning during shaft sleeve processing is achieved, and the limiting strip 64 prevents the positioning hollow shaft 63 from rotating together with the second threaded shaft 62 under the action of friction force.

It should be noted that, the first motor 32 and the second motor 33 disclosed in the above embodiments are servo motors, the specific models can be configured according to actual usage scenarios, and the external PLC controller controls the first motor 32 and the second motor 33 to operate by a method commonly used in the prior art.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a positioning fixture is used in axle sleeve processing which characterized in that: comprises a workbench (2), a power unit (3), a power transmission unit (4), a clamp moving unit (5) and a replaceable friction pad unit (7);

table (2): the four corners of the bottom are respectively provided with a bracket (1);

power unit (3): the power unit (3) is arranged at the bottom of the bracket (1) and is connected with the power transmission unit (4);

jig moving unit (5): the automatic clamping device comprises four bevel gears (51), a first threaded shaft (52), three sliding rails (53), sliding ways (54) and clamping blocks (56), wherein a sliding hole is formed in the middle of the workbench (2), three sliding ways (54) distributed along the radial direction of the sliding hole are formed in the side surface of the sliding hole in an annular array mode, each sliding rail (54) is connected with the corresponding sliding block (53) in a sliding mode, the clamping block (56) is arranged at the top of each sliding block (53), three fan-shaped through grooves are formed in one end, away from the sliding hole, of the corresponding sliding rail (54) on the workbench (2), each sliding rail (54) is connected with the first threaded shaft (52) in a rotating mode, the first threaded shaft (52) is in threaded connection with a screw hole in the side surface of the sliding block (53), the end portion of the first threaded shaft (52) extends into the fan-shaped through groove and is fixedly connected with the four bevel gears (51), and the four bevel gears (51) are connected with the power transmission unit (4) respectively;

replaceable friction pad unit (7): three clamping blocks (56) are arranged and are respectively arranged on the tops of the three clamping blocks.

2. The positioning fixture for machining the shaft sleeve as claimed in claim 1, wherein: power unit (3) contain motor support (31), motor one (32) and motor two (33), the lower extreme middle part of support (1) is equipped with motor support (31) of horizontal placing, the upper end middle part of motor support (31) is equipped with motor two (33), the upper end left side of motor support (31) is equipped with motor one (32), the input of motor one (32) and motor two (33) is connected through outside PLC controller and external power source's output electricity.

3. The positioning fixture for machining the shaft sleeve as claimed in claim 2, wherein: the power transmission unit (4) comprises a first bevel gear (41), a second bevel gear (42), a connecting rod (43), a third bevel gear (44), a connecting sleeve (45) and a supporting frame (46), the lower end of the workbench (2) is fixedly connected with the vertical part of the L-shaped supporting frame (46), the left end of the supporting frame (46) is rotatably connected with the outer peripheral side of the connecting sleeve (45) through a bearing, the third bevel gear (44) is arranged at the upper end of the connecting sleeve (45), the top of the third bevel gear (44) is respectively meshed and connected with the fourth bevel gears (51), the lower end of the connecting sleeve (45) is fixedly connected with the second bevel gear (42) through the connecting rod (43), the output shaft of the first motor (32) is fixedly connected with one end of the first bevel gear (41), and the first bevel gear (41) is meshed and connected with the second bevel gear (42).

4. The positioning fixture for machining the shaft sleeve as claimed in claim 1, wherein: the clamp moving unit (5) further comprises a spring (55), one end of the sliding block (53) is fixedly connected with one end of the spring (55), and the other end of the spring (55) is fixedly connected with one end, far away from the sliding hole, of the sliding way (54).

5. The positioning fixture for machining the shaft sleeve as claimed in claim 1, wherein: removable friction pad unit (7) contain friction pad one (71), friction pad two (72), friction pad support (73) and forked tail spout (74), press from both sides the vertical friction pad support (73) lower extreme of the upper end fixed connection of tight piece (56), vertical forked tail spout (74) have been seted up respectively to the inboard and the outside middle part of friction pad support (73), the inboard middle part of friction pad one (71) is provided with vertical forked tail slider, the outside middle part of friction pad two (72) is provided with vertical forked tail slider, dovetail spout (74) slip joint in friction pad one (71) through forked tail slider and friction pad support (73) outside, dovetail spout (74) slip joint in friction pad two (72) through forked tail slider and friction pad support (73) inboard.

6. The positioning fixture for machining the shaft sleeve as claimed in claim 3, wherein: the positioning device is characterized by further comprising a positioning unit (6), wherein the positioning unit (6) comprises a rotating shaft (61), a second threaded shaft (62), a positioning hollow shaft (63) and a limiting strip (64), the output shaft of the second motor (33) is fixedly connected with the lower end of the rotating shaft (61), the upper end of the rotating shaft (61) sequentially penetrates through the middle parts of the second bevel gear (42) and the connecting sleeve (45) and the lower end of the second threaded shaft (62), the positioning hollow shaft (63) is vertically and slidably connected in the sliding hole, the top of the second threaded shaft (62) is in threaded connection with the threaded through hole on the inner side of the positioning hollow shaft (63), the limiting strip (64) is arranged on the annular array on the outer peripheral side of the positioning hollow shaft (63), and the inner wall of the sliding hole is provided with a slot which is vertically and slidably connected with the limiting strip (64).

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