CN210435400U - Self-centering spindle head turning expandable core pneumatic clamping mould - Google Patents

Self-centering spindle head turning expandable core pneumatic clamping mould Download PDF

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Publication number
CN210435400U
CN210435400U CN201921476245.6U CN201921476245U CN210435400U CN 210435400 U CN210435400 U CN 210435400U CN 201921476245 U CN201921476245 U CN 201921476245U CN 210435400 U CN210435400 U CN 210435400U
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China
Prior art keywords
mandrel
workpiece
push rod
slope
shaft sleeve
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CN201921476245.6U
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Chinese (zh)
Inventor
姜振成
麻雷
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Changchun Wuyu Auto Parts Co Ltd
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Changchun Wuyu Auto Parts Co Ltd
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Abstract

The utility model provides a from centering spindle nose turning core pneumatic clamping mould that can expand, include: the device comprises a pull rod mechanism arranged on a front body of the machine tool, a push rod mechanism arranged on a tailstock of the machine tool, and a mould positioning disc mechanism arranged on a main shaft of the machine tool; the mould positioning disc mechanism is used for positioning a workpiece, and comprises: the clamping fixture comprises a clamping fixture positioning disc, a mandrel, a pressing slide block and a rubber ring, wherein a pull rod mechanism is used for driving the mandrel to move in a string mode in an axis channel along the horizontal direction, and a push rod mechanism is used for clamping a workpiece on the clamping fixture positioning disc; the utility model has the advantages that: the problem that workers need to position and clamp each part in the past is solved, the labor intensity of the workers is greatly reduced, and meanwhile, the production efficiency is improved by over 40%.

Description

Self-centering spindle head turning expandable core pneumatic clamping mould
Technical Field
The utility model relates to an automobile axle head cover class processing technology field, concretely relates to from bloated core pneumatic clamping mould of centering spindle nose turning.
Background
In the field of industrial equipment, the head of the shaft is also referred to as the two ends of the shaft, which is a mechanical part that supports the rotating parts and rotates together with them to transmit motion, torque or bending moment, generally in the shape of a metal round bar, each section can have a different diameter, and the parts that rotate in the machine are mounted on the shaft. And the two end portions of the shaft are commonly referred to as stub shafts.
The automobile spindle head is used as an indispensable component in the automobile field, and at present, the machining mode of the automobile spindle head on the market mainly utilizes a lathe three-jaw chuck to expand and weld a spigot inner hole and turn an excircle.
The main problems of the above method are: (1) the clamping efficiency is low, and the alignment is difficult. (2) The coaxiality of the processed excircle and the welding seam allowance is out of tolerance, so that the jumping quantity of the excircle of the subsequent finish machining is out of tolerance, and the service performance of the axle is further influenced. (3) Because the shaft head blank is a forged piece, the roundness of an inner hole, the coaxiality of the inner hole and an outer circle and the surface quality are poor, and the positioning and clamping are inaccurate during turning.
The past solutions of the above-described approaches; (1) in the past, a forging blank manufacturer is required to ensure the roundness and the surface roughness of an inner hole when the problems are solved, but the problems cannot be basically solved because of the particularity of the forging process and the large length size of the shaft head. (2) The length of the lathe claw is tried to be lengthened, but the processing effect is not ideal, and the rejection rate is high.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a from bloated core pneumatic clamping mould of centering spindle nose turning for solve the problem at the bottom of the rejection rate is high, the production efficiency in the course of working, in order to overcome above-mentioned prior art not enough.
The utility model provides a but from centering spindle nose turning core pneumatic clamping mould that expands includes: the lathe comprises a mould positioning disc mechanism arranged on a main shaft of a machine tool, a pull rod mechanism arranged on a front body of the machine tool and a push rod mechanism arranged on a tailstock of the lathe;
wherein, mould positioning disk mechanism is used for the location work piece, and mould positioning disk mechanism includes: the clamping fixture comprises a clamping fixture positioning disc, a mandrel, a pressing slider and a rubber ring, wherein the mandrel is slidably connected into an axis channel of the clamping fixture positioning disc, a workpiece is sleeved on the side wall of the axis channel, at least one group of slope key grooves with opposite positions are formed in the circumference of the mandrel, the slope surfaces of the slope key grooves incline along the drawing direction of the mandrel, a pressing slider mounting groove corresponding to the slope key groove in position is formed in the side wall of the axis channel, the slope surface at one end of the pressing slider is slidably connected onto the slope key groove, the other end of the pressing slider penetrates through the pressing slider mounting groove and is supported on the inner wall of the workpiece, a rubber ring mounting groove is formed in one end of the pressing slider, which is in;
wherein, the link mechanism is used for driving the dabber and moves in the interior cluster of axle center passageway along the horizontal direction, and link mechanism includes: the front pull rod and the motor main shaft are coaxial;
wherein, push rod mechanism is used for pressing from both sides the work piece tight on the mould positioning disk, and push rod mechanism includes: the rear push rod and the motor main shaft are coaxial;
one end of the mandrel is fixedly connected with the free end of the front pull rod, the free end of the rear push rod clamps the workpiece on the positioning surface of the positioning disc of the clamping fixture, and the mandrel is coaxial with the front pull rod and the rear push rod.
Preferably, the mold positioning disc is in the shape of a flange disc, and the mold positioning disc is composed of a stepped shaft sleeve formed by integrally molding a first shaft sleeve, a second shaft sleeve and a third shaft sleeve.
Preferably, one end of the workpiece is sleeved on the first shaft sleeve and tightly pressed on the end surface of the second shaft sleeve, and the third shaft sleeve is installed on the main shaft of the machine tool through a bolt.
Preferably, the inner wall of the first shaft sleeve is provided with a groove for reducing the contact area with the mandrel.
Preferably, the mandrel comprises: first mandrel segment and with first mandrel segment an organic whole second mandrel segment of connecting, first mandrel segment includes: slope keyway section, straight section and locking section, the one end of straight section is connected to the nadir with the slope keyway, and the other end and the second dabber section of straight section are connected, and the diameter of locking section is greater than the diameter of axle center passageway, and the locking section is arranged outside the axle center passageway.
The utility model has the advantages and positive effects that:
1. the utility model discloses a dabber, preceding pull rod, back push rod and the same axle center of lathe main shaft of mould positioning disk mechanism, preceding pull rod pulling dabber drives and compresses tightly behind the slider quick clamping workpiece, not only can the quick clamping workpiece, can also guarantee that work piece and lathe main shaft are with the axle center to realized carrying out quick self-align to the work piece and pressing from both sides tightly, still solved in the past the workman need fix a position every part, press from both sides tightly, great reduction workman's intensity of labour, improve production efficiency more than 40% simultaneously.
2. The utility model discloses a set up the recess that reduces with dabber area of contact on the inner wall of first axle sleeve for reduce the area of contact of dabber and mould positioning disk, thereby reduce the friction of dabber and mould positioning disk, increase the life of dabber and mould positioning disk.
3. The utility model discloses a spindle slope keyway drives and compresses tightly the slider top tightly on the inner wall of work piece for work piece and dabber are with the axle center, the location of work piece in the horizontal direction has been ensured, push rod promotes the work piece top through the back and holds on the terminal surface of mould positioning disk, again because the terminal surface of mould positioning disk and the terminal surface level of lathe main shaft, the location of work piece in vertical direction has been ensured again, for original artifical location, reduce the rejection rate more than 20%, use this factory as an example, only the waste product loss rate just can practice thrift fund more than 10 ten thousand yuan annually.
Drawings
Other objects and results of the invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
fig. 1 is a front view of the overall structure according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a locking structure of a positioning plate mechanism of a mold according to an embodiment of the present invention.
Fig. 4 is a schematic view of a releasing structure of a positioning disc mechanism of a clamping fixture according to an embodiment of the present invention.
Fig. 5 is a front view of a mandrel according to an embodiment of the present invention.
Wherein the reference numerals include: the lathe front body 1, the pull rod mechanism 2, the lathe tailstock 3, the push rod mechanism 4, the lathe main shaft 5, the mould positioning disk mechanism 6, the front pull rod 7, the first cylinder 8, the locking section 9, the rear push rod 10, the second cylinder 11, the mould positioning disk 12, the mandrel 13, the pressing slider 14, the rubber ring 15, the first shaft sleeve 16, the second shaft sleeve 17, the third shaft sleeve 18, the axle center channel 19, the workpiece 20, the slope key groove 21, the pressing slider mounting groove 22, the rubber ring mounting groove 23, the groove 24, the first mandrel section 25, the second mandrel section 26, the slope key groove section 27 and the straight section 28.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
Fig. 1-5 show the overall structure schematic according to an embodiment of the present invention.
The utility model discloses a but from centering spindle nose turning core pneumatic clamping mould that expands includes: the device comprises a pull rod mechanism 2 arranged on a front body 1 of the machine tool, a push rod mechanism 4 arranged on a tailstock 3 of the machine tool, and a mould positioning disc mechanism 6 arranged on a main shaft 5 of the machine tool;
referring to fig. 1 to 5, the drawbar mechanism 2 of the present invention includes: the device comprises a front pull rod 7 and a first cylinder 8 which drives the front pull rod 7 to move along the horizontal direction, wherein the front pull rod 7 and a motor spindle 5 are coaxial; the first cylinder 8 is installed on the front body 1 of the machine tool along the horizontal direction through a first cylinder installation seat, one end of the front pull rod 7 is fixedly connected with a piston rod of the first cylinder 8, and the other end of the front pull rod 7 penetrates through the front body 1 of the machine tool and is connected with the mandrel 13 through a bolt.
Referring to fig. 1-5, the push rod mechanism 4 of the present invention includes: the rear push rod 10 and the second cylinder 11 drive the rear push rod 10 to move along the horizontal direction, and the rear push rod 10 and the motor spindle 5 are coaxial; the second cylinder 11 is installed on the lathe tailstock 3 through the second cylinder installation seat along the horizontal direction, one end of the rear push rod 10 is fixedly connected with a piston rod of the second cylinder 11, and the other end of the rear push rod 10 is used for tightly pushing a workpiece.
Referring to fig. 1-5, the positioning plate mechanism 6 of the present invention comprises: the clamping fixture positioning disk 12 is in a flange disc shape, the clamping fixture positioning disk 12 is composed of a first shaft sleeve 16, a second shaft sleeve 17 and a third shaft sleeve 18 which are integrally formed into a stepped shaft sleeve, the mandrel 13 is slidably connected into a shaft center channel 19 of the clamping fixture positioning disk 6, a workpiece 20 is sleeved on the side wall of the shaft center channel 19, namely the first shaft sleeve 16, a group of slope key grooves 21 which are opposite in position are arranged on the circumference of the mandrel 13, the slope surface of each slope key groove 21 inclines along the drawing direction of the mandrel 13, a clamping fixture mounting groove 22 which is corresponding to the slope key groove 21 is arranged on the side wall of the shaft center channel 19, the slope surface of one end of the clamping fixture 14 is slidably connected onto the slope key groove 21, the other end of the clamping fixture 14 penetrates through the clamping fixture mounting groove 22 to be supported against the inner wall of the workpiece 20, a rubber ring mounting groove 23 is arranged at the end of the clamping fixture 14, which is in contact with the inner wall of the, the rubber ring 15 is sleeved in the two rubber ring mounting grooves 23; one end of the mandrel 13 is fixedly connected with the free end of the front pull rod 7, the free end of the rear push rod 10 clamps the workpiece 20 on the positioning surface of the positioner 12, the mandrel 13, the front pull rod 7 and the rear push rod 10 are coaxial, the rubber ring 15 is used for the return action of the pressing slider 14, after the workpiece 20 is machined, the mandrel 13 returns to the initial position, the pressing slider 14 at the upper end of the mandrel 13 can retract into the slope key slot 21 due to gravity, and the pressing slider 14 at the lower end of the mandrel 13 drives the pressing slider 14 to retract into the slope key slot 21 through the tightening force of the rubber ring 15.
Referring to fig. 1-5, the inner wall of the first shaft sleeve 16 of the present invention is provided with a groove 24 for reducing the contact area with the mandrel, one end of the workpiece 20 is sleeved on the first shaft sleeve 16 and tightly pressed against the end surface of the second shaft sleeve 17, and the third shaft sleeve 18 is mounted on the machine tool spindle 5 through a bolt; the mandrel 13 includes: a first mandrel segment 25 and a second mandrel segment 26 integrally connected to the first mandrel segment 25, the first mandrel segment 25 comprising: the locking device comprises a slope key groove section 27, a straight section 28 and a locking section 9, wherein one end of the straight section 28 is connected with the bottom point of the slope key groove 21, the diameter of the highest point of the slope key groove 21 is the same as that of the locking section 9, the other end of the straight section 28 is connected with a second mandrel section 26, the diameter of the locking section 9 is larger than that of the mandrel channel 19, and the locking section 9 is arranged outside the mandrel channel 19.
The working principle is as follows:
(1) positioning of the workpiece in the vertical direction: after an operator sleeves the workpiece 20 on the mold positioning disc mechanism 6, the push rod mechanism 4 tightly pushes the workpiece 20 against the end surface of the mold positioning disc mechanism 6, and the end surface of the mold positioning disc mechanism 6 is perpendicular to the ground, so that the push rod mechanism 4 can position a vertical surface after tightly pushing the workpiece 20.
(2) Positioning of the workpiece in the horizontal direction: in the drawing process of the mandrel 13, the slope key groove 21 gradually drives the pressing slide block 14 to tightly press the inner wall of the workpiece 20, the pressing slide block 14 tightly presses the inner wall of the workpiece 20, so that the workpiece 20 and the mandrel 13 are coaxial, and the mandrel 13, the front pull rod 7, the rear push rod 10 and the machine tool spindle 5 are coaxial, so that the workpiece 20 and the machine tool spindle 5 are indirectly coaxial, and the horizontal plane (coaxiality) can be positioned after the pressing slide block 14 tightly presses the inner wall of the workpiece 20.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1. The utility model provides a from centering spindle nose turning inflatable core pneumatic clamping mould which characterized in that includes: the lathe comprises a mould positioning disc mechanism arranged on a main shaft of a machine tool, a pull rod mechanism arranged on a front body of the machine tool and a push rod mechanism arranged on a tailstock of the lathe;
wherein, mould positioning disk mechanism is used for fixing a position the work piece, mould positioning disk mechanism includes: the clamping fixture comprises a clamping fixture positioning disc, a mandrel, a pressing slider and a rubber ring, wherein the mandrel is connected in an axis channel of the clamping fixture positioning disc in a sliding manner, a workpiece is sleeved on the side wall of the axis channel, at least one group of slope key grooves with opposite positions are formed in the circumference of the mandrel, the slope surfaces of the slope key grooves incline along the drawing direction of the mandrel, a pressing slider mounting groove corresponding to the slope key groove in position is formed in the side wall of the axis channel, the slope surface at one end of the pressing slider is connected in the slope key grooves in a sliding manner, the other end of the pressing slider penetrates through the pressing slider mounting groove and abuts against the inner wall of the workpiece, a rubber ring mounting groove is formed in one end of the pressing slider, which is in contact with the inner wall of the workpiece, and the rubber;
wherein, the link mechanism is used for driving the dabber is in along the horizontal direction the interior cluster of axle center passageway moves, the link mechanism includes: the front pull rod and the motor main shaft are coaxial;
wherein, push rod mechanism is used for pressing from both sides tight on the mould positioning disk with the work piece, push rod mechanism includes: the rear push rod and the motor main shaft are coaxial;
one end of the mandrel is fixedly connected with the free end of the front pull rod, the free end of the rear push rod clamps the workpiece on the positioning surface of the positioner, and the mandrel is coaxial with the front pull rod and the rear push rod.
2. The pneumatic clamping mould for the self-centering shaft head turning expandable core is characterized in that the mould positioning disc is in a flange disc shape and consists of a first shaft sleeve, a second shaft sleeve and a third shaft sleeve which are integrally formed into a stepped shaft sleeve.
3. The pneumatic clamping fixture for the self-centering spindle nose turning expandable core according to claim 2, wherein one end of the workpiece is sleeved on the end surface of the second shaft sleeve through the first shaft sleeve, and the third shaft sleeve is mounted on the spindle of the machine tool through a bolt.
4. The pneumatic clamping fixture for the self-centering spindle head turning expandable core according to claim 2, wherein a groove for reducing the contact area with the spindle is formed in the inner wall of the first shaft sleeve.
5. The pneumatic clamping fixture for the self-centering spindle nose turning expandable core according to any one of claims 1 or 2, wherein the spindle comprises: first mandrel segment and with first mandrel segment an organic whole second mandrel segment of connecting, first mandrel segment includes: slope keyway section, straight section and locking section, straight section one end with the one end to the nadir of slope keyway is connected, straight section the other end with the second dabber section is connected, the diameter of locking section is greater than the diameter of axle center passageway, the locking section is arranged in outside the axle center passageway.
CN201921476245.6U 2019-09-06 2019-09-06 Self-centering spindle head turning expandable core pneumatic clamping mould Active CN210435400U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921476245.6U CN210435400U (en) 2019-09-06 2019-09-06 Self-centering spindle head turning expandable core pneumatic clamping mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921476245.6U CN210435400U (en) 2019-09-06 2019-09-06 Self-centering spindle head turning expandable core pneumatic clamping mould

Publications (1)

Publication Number Publication Date
CN210435400U true CN210435400U (en) 2020-05-01

Family

ID=70410311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921476245.6U Active CN210435400U (en) 2019-09-06 2019-09-06 Self-centering spindle head turning expandable core pneumatic clamping mould

Country Status (1)

Country Link
CN (1) CN210435400U (en)

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