Spinning positioning clamp for automobile hub

Abstract

The utility model discloses a spinning positioning clamp for an automobile hub. The spinning positioning clamp comprises a spinning die and a tail jacking tool used for pressing and positioning a hub blank on the spinning die. The spinning die comprises a die core, a material ejecting block, a material ejecting spring and a center positioning sleeve. A positioning groove is formed in the upper part of the mold core; a threaded connection hole is formed in the bottom of the positioning groove; the material ejecting block is installed in the positioning groove in a sliding mode in the vertical direction, and a center hole is formed in the material ejecting block. The material ejecting spring is supported between the bottom of the positioning groove and the material ejecting block; the central positioning sleeve penetrates through the central hole, an outer convex ring limited at the upper end of the central hole is arranged at the upper end of the central positioning sleeve, and the lower end of the central positioning sleeve is in threaded connection with the interior of the threaded connection hole; the tail jacking tool comprises a tail jacking block, and a center positioning rod which extends downwards and can be inserted into the center positioning sleeve in an aligned mode is fixed to the tail jacking block. The spinning die is convenient to replace, and the cost for replacing the spinning die can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub machining technical field, concretely relates to a kind of automobile wheel hub spinning positioning fixture. BACKGROUND

[0002] Wheel hub spinning process is by tail top tooling to locate prefabricated forging blank on spinning die, the spindle of spinning machine is rotated to the die and blank, then by single or multiple spinning wheel to blank is applied pressure, so that the plastic deformation of each point of blank is produced continuously, so that the metal of rim part is thinned under pressure and extends along the form of die, finally the wheel hub of required shape and size is formed.

[0003] Spinning die is equipped with ejector, wheel hub is ejected by ejector after spinning forming, when spinning different models of wheel hub, spinning die needs to be replaced into corresponding model, the prior art needs to replace spinning die as a whole, and the cost is higher. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model provides an automobile wheel hub spinning positioning fixture to facilitate the replacement of spinning die and reduce the cost of replacing spinning die.

[0005] The utility model provides an automobile wheel hub spinning positioning fixture, which comprises a spinning die and a tail top tooling for pressing and positioning the wheel hub blank on the spinning die.

[0006] The spinning die comprises:

[0007] A mold core is provided with a positioning groove at the upper part, and a threaded connection hole is arranged at the bottom of the positioning groove.

[0008] An ejector block is vertically slidingly installed in the positioning groove, and a center hole is arranged in the ejector block.

[0009] An ejector spring is supported between the bottom of the positioning groove and the ejector block.

[0010] A center positioning sleeve passes through the center hole, and an outer convex ring is arranged at the upper end of the center positioning sleeve to be located on the upper end of the center hole.

[0011] The tail top tooling comprises a tail top block, and a center positioning rod is fixed on the tail top block and extends downward to be aligned and inserted into the center positioning sleeve.

[0012] Further, the positioning groove comprises a vertical guide portion and a tapered flared portion arranged on the upper side of the vertical guide portion, and the shape of the ejector block matches the shape of the positioning groove.

[0013] Further, the bottom of the top material block is provided with a spring mounting groove, and the top material spring is compressedly mounted in the spring mounting groove.

[0014] Further, the upper side of the top material block is provided with a movable groove around the periphery of the upper end of the center hole, and the outer convex ring is contained in the movable groove.

[0015] Further, the inner wall of the upper end of the center positioning sleeve is provided with a screwing groove, the outer periphery of the center positioning rod is provided with a screwing part matched with the screwing groove, and the screwing part is inserted into the screwing groove when the tail top block presses the top material block into the positioning groove.

[0016] Further, the screwing groove and the screwing part are matched with each other in the shape of a plum blossom.

[0017] Further, the mold core is fixed on the rotary machine through a flange.

[0018] Further, the outer periphery of the bottom of the tail top block is provided with a stop limit groove matched with the outer edge convex part of the spoke of the hub blank.

[0019] Further, the tail top block is fixed on the rotary press shaft through a flange.

[0020] Further, the upper side of the tail top block is provided with a sunken groove, the bottom of the sunken groove is provided with a through hole through which the center positioning rod passes, the upper end of the center positioning rod is provided with an enlarged head placed in the sunken groove, and the enlarged head is fixed in the sunken groove through a bolt.

[0021] The beneficial effects of the utility model are embodied in:

[0022] During the spinning machining of the hub, the hub blank is mounted on the outer side of the upper part of the mold core, the tail top block tightly positions the hub blank on the mold core, the center positioning rod is inserted into the center positioning sleeve, the spinning die and the tail top tooling are positioned, then the spinning die and the tail top tooling drive the hub blank to rotate, the spinning wheel spins and forms the hub rim part, the hub is formed, the tail top block is loosened, the top material block is driven upward by the top material spring, the hub is separated from the surface of the mold core, and then the formed hub is taken down.

[0023] When the spinning die is replaced, only the external mold core needs to be replaced, the top material block and the top material spring can be taken down from the original mold core and mounted in the replaced mold core, so that the spinning die does not need to be replaced as a whole, the cost of replacing the spinning die is reduced, when disassembled, the center positioning sleeve is screwed down, then the top material block and the top material spring are taken down from the mold core, when assembled, the taken-down top material block is mounted in the replaced mold core, then the center positioning sleeve is inserted into the center hole and screwed into the threaded connection hole for fixation, and the replacement is convenient. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the wheel hub spinning process according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the wheel hub being ejected in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram illustrating the installation and disassembly of the top material block according to an embodiment of this utility model.

[0028] Figure 4 This is a schematic diagram of the mold core and the ejector block after disassembly in an embodiment of this utility model.

[0029] In the attached diagram, 100-spinning die; 110-die core; 111-positioning groove; 112-threaded connection hole; 120-ejector block; 121-center hole; 122-spring mounting groove; 123-movable groove; 130-ejector spring; 140-center positioning sleeve; 141-outer convex ring; 142-screwing groove; 150-rotating machine table; 200-tail ejector tooling; 210-tail ejector block; 211-stop limiting groove; 212-counterpart groove; 213-through hole; 220-center positioning rod; 221-screwing part; 222-expanding head; 230-rotating pressure shaft; 300-wheel hub blank. Detailed Implementation

[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0032] like Figures 1-4 As shown, this utility model embodiment provides an automobile wheel hub spinning and positioning fixture, including a spinning die 100 and a tail top tooling 200 for positioning the wheel hub blank 300 on the spinning die 100.

[0033] The spinning die 100 comprises a die core 110, a material ejecting block 120, a material ejecting spring 130 and a center positioning sleeve 140.

[0034] The die core 110 is fixed on the rotary machine 150 through a flange, and the upper portion of the die core 110 is provided with a positioning groove 111, and the bottom of the positioning groove 111 is provided with a threaded connection hole 112. The material ejecting block 120 is vertically slidingly installed in the positioning groove 111, and the material ejecting block 120 is provided with a center hole 121.

[0035] Specifically, the positioning groove 111 comprises a vertical guide portion and a tapered flared portion arranged on the upper side of the vertical guide portion, and the material ejecting block 120 is matched with the shape of the positioning groove 111.

[0036] The material ejecting spring 130 is supported between the bottom of the positioning groove 111 and the material ejecting block 120. Preferably, the bottom of the material ejecting block 120 is provided with a spring mounting groove 122, and the material ejecting spring 130 is compressionally installed in the spring mounting groove 122.

[0037] The center positioning sleeve 140 passes through the center hole 121, the upper end of the center positioning sleeve 140 is provided with an outer protruding ring 141 which is located on the upper end of the center hole 121, and the lower end of the center positioning sleeve 140 is threadedly connected in the threaded connection hole 112, so that the center positioning sleeve 140 can limit the material ejecting block 120 in the positioning groove 111, and the material ejecting block 120 can also move up and down within a certain range.

[0038] In order to avoid that the outer protruding ring 141 extends out of the material ejecting block 120 when the material ejecting block 120 moves up and down, the upper side of the material ejecting block 120 is provided with a movable groove 123 around the upper end of the center hole 121, and the outer protruding ring 141 is accommodated in the movable groove 123.

[0039] The tail ejecting tool 200 comprises a tail ejecting block 210, and the tail ejecting block 210 is fixed on the rotary pressing shaft 230 through a flange. The tail ejecting block 210 is fixed with a center positioning rod 220 which extends downward and can be aligned and inserted into the center positioning sleeve 140.

[0040] The upper side of the tail ejecting block 210 is provided with a sunken groove 212, the bottom of the sunken groove 212 is provided with a through hole 213, the center positioning rod 220 passes through the through hole 213, the upper end of the center positioning rod 220 is provided with a diameter expanding head 222 which is placed in the sunken groove 212, and the diameter expanding head 222 is fixed in the sunken groove 212 through bolts.

[0041] Referring to Figure 1When the hub spinning process is performed, the hub blank 300 is installed on the outside of the upper part of the mold core 110, the tail block 210 is used to press and position the hub blank 300 on the mold core 110, the center positioning rod 220 is inserted into the center positioning sleeve 140, which plays a positioning role on the spinning die 100 and the tail block tool 200, and then the spinning die 100 and the tail block tool 200 drive the hub blank 300 to rotate, and the spinning die 100 is used to spin and form the hub rim part of the hub. Referring to Figure 2 After the hub is formed, the tail block 210 is loosened, the material block 120 is used to push the hub upward under the action of the material spring 130, so that the hub is separated from the surface of the mold core 110, and then the formed hub can be taken out.

[0042] As shown in Figure 4 When the spinning die 100 is replaced, only the external mold core 110 needs to be replaced, the material block 120 and the material spring 130 can be disassembled from the original mold core 110 and installed in the replaced mold core 110, so that the spinning die 100 does not need to be replaced as a whole, and the cost of replacing the spinning die 100 can be reduced. When disassembled, the center positioning sleeve 140 is unscrewed, and then the material block 120 and the material spring 130 can be disassembled from the mold core 110. When installed, the disassembled material block 120 is installed in the replaced mold core 110, and then the center positioning sleeve 140 is inserted into the center hole 121 and screwed into the threaded connection hole 112 for fixation, so that the replacement is convenient.

[0043] In some embodiments, the inner wall of the upper end of the center positioning sleeve 140 is provided with a screwing groove 142, and the outer periphery of the center positioning rod 220 is provided with a screwing part 221 matched with the screwing groove 142. When the tail block 210 is used to press the material block 120 into the positioning groove 111, the screwing part 221 is inserted into the screwing groove 142.

[0044] Optionally, the screwing groove 142 and the screwing part 221 are matched with the plum blossom shape.

[0045] As shown in Figure 3As shown, when disassembling the ejector block 120, first, the tail block 210 drives the screwing part 221 outside the center positioning rod 220 to insert into the screwing groove 142 at the upper end of the center positioning sleeve 140, then relatively rotate the spinning die 100 and the tail block tool 200, so that the lower end of the center positioning sleeve 140 is screwed out of the threaded connection hole 112, then the ejector block 120 and the ejector spring 130 can be easily taken out from the mold core 110. When installing the ejector block 120, first, the ejector spring 130 and the ejector block 120 are installed in the positioning groove 111 of the mold core 110, at this time, the ejector block 120 protrudes from the top of the mold core 110, then the tail block 210 is used to press the ejector block 120 into the mold core 110, and the ejector spring 130 is compressed, at this time, the tail block 210 drives the screwing part 221 outside the center positioning rod 220 to insert into the screwing groove 142 at the upper end of the center positioning sleeve 140, then relatively rotate the spinning die 100 and the tail block tool 200, so that the lower end of the center positioning sleeve 140 is screwed into the threaded connection hole 112 in the mold core 110, that is, the assembly of the mold core 110 and the ejector block 120 can be realized. By using the above-mentioned mode, the disassembly and assembly between the mold core 110 and the ejector block 120 can be easily completed.

[0046] In some embodiments, the outer periphery of the bottom of the tail block 210 is provided with a stop limit groove 211 which is positioned with the spoke outer edge protrusion of the hub blank 300, so that the positioning between the tail block 210 and the hub blank 300 can be realized, and the precision of the hub spinning processing is effectively ensured.

[0047] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A spinning positioning fixture for automobile wheel hub, comprising a spinning die and a tail block tool for pressing and positioning a wheel hub blank on the spinning die, characterized in that: the spinning die comprises: a die core, the upper part of the die core is provided with a positioning groove, the bottom of the positioning groove is provided with a threaded connection hole; a material pushing block, the material pushing block is vertically slidingly installed in the positioning groove, the material pushing block is provided with a central hole; a material pushing spring, the material pushing spring is supported between the bottom of the positioning groove and the material pushing block; a central positioning sleeve, the central positioning sleeve passes through the central hole, the upper end of the central positioning sleeve is provided with an outer convex ring which is located on the upper end of the central hole, the lower end of the central positioning sleeve is threadedly connected in the threaded connection hole; the tail block tool comprises a tail block, the tail block is fixed with a central positioning rod which extends downward and can be aligned and inserted into the central positioning sleeve.

2. The spinning positioning fixture for automobile wheel hub according to claim 1, characterized in that: the positioning groove comprises a vertical guide part and a tapered flared part provided on the upper side of the vertical guide part, the material pushing block is matched with the shape of the positioning groove.

3. The spinning positioning fixture for automobile wheel hub according to claim 1, characterized in that: the bottom of the material pushing block is provided with a spring installation groove, the material pushing spring is compressedly installed in the spring installation groove.

4. The spinning positioning fixture for automobile wheel hub according to claim 1, characterized in that: the upper side of the material pushing block is provided with a movable groove around the upper end of the central hole, the outer convex ring is accommodated in the movable groove.

5. The spinning positioning fixture for automobile wheel hub according to claim 4, characterized in that: the inner wall of the upper end of the central positioning sleeve is provided with a twisting groove, the outer periphery of the central positioning rod is provided with a twisting part which is matched with the twisting groove, when the tail block presses the material pushing block into the positioning groove, the twisting part is inserted into the twisting groove.

6. The spinning positioning fixture for automobile wheel hub according to claim 5, characterized in that: the twisting groove and the twisting part are matched with each other in a plum blossom shape.

7. The spinning positioning fixture for automobile wheel hub according to claim 1, characterized in that: the die core is fixed on a rotating machine table through a flange.

8. The spinning positioning fixture for automobile wheel hub according to claim 1, characterized in that: the outer periphery of the bottom of the tail block is provided with a stop limit groove which is matched with the outer edge protrusion of the spoke of the wheel hub blank.

9. The spinning positioning fixture for automobile wheel hub according to claim 8, characterized in that: the tail block is fixed on a rotating press shaft through a flange.

10. The spinning positioning fixture for automobile wheel hub according to claim 9, characterized in that: the upper side of the tail block is provided with a sunken groove, the bottom of the sunken groove is provided with a through hole, the central positioning rod passes through the through hole, the upper end of the central positioning rod is provided with a diameter expanding head which is placed in the sunken groove, the diameter expanding head is fixed in the sunken groove through a bolt.

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