CN211387859U - Self-rotating centering clamping mechanism - Google Patents

Abstract

The utility model belongs to the technical field of anchor clamps, especially, relate to a self-rotation centering clamping mechanism. The device comprises two tensioning blocks provided with grooves, two sliding inner jacking blocks and two nuts, wherein the two tensioning blocks are sleeved on a shaft rod to be machined in a back-to-back mode and are in contact with a left shaft shoulder and a right shaft shoulder on the shaft rod to be machined, the two sliding inner jacking blocks are clamped in the tensioning blocks respectively, the outer walls of the sliding inner jacking blocks abut against the inner side walls of the tensioning blocks, and the nuts are arranged at one ends, far away from the tensioning blocks, of the two sliding inner jacking blocks respectively. The utility model discloses carry out the smart man-hour to specific work piece, install spin centering anchor clamps at the work piece both ends, nut locking promotes and slides interior kicking block preceding pressure, props tensioning piece one end big, and the tensioning piece other end compresses tightly, presss from both sides tight centering to the work piece both ends, makes the clamp to the dabber tight more stable, and is fixed effectual, not only realizes the centering, improves the machining precision, can also prevent that the dabber from rocking to lead to damaging the plug surface man-hour, reduces the waste product and produces, reduces the rejection rate to reduce cost.

Description

Self-rotating centering clamping mechanism

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of anchor clamps especially relates to a from centering clamping mechanism.

[ background of the invention ]

In the machining of cooler accessory, the effect of centering can be realized to current centering equipment, but when processing long rod type work piece, only press from both sides tight work piece one end, make the hub connection have off-centre, fixed effect is not good, make the work piece rock, thereby influence the concentricity and make the machining dimension have the difference, to some occasions that require the precision very high, this kind because the hub connection has the run-out that off-centre leads to and can bring a great deal of problem for these workplaces, for this reason, urgent need have one kind can carry out accurate centering to the work piece and press from both sides tightly, can process work piece both ends through clamping, and the simple and convenient fixture mechanism of mode.

[ summary of the invention ]

In order to solve the problem that the shaft connection has eccentricity to lead to jumping during the processing of the workpiece, the utility model provides a self-rotating centering fixture mechanism.

The utility model discloses realized by following technical scheme:

a self-rotation centering clamping mechanism is characterized by comprising two tensioning blocks with grooves, two sliding inner jacking blocks and two nuts, wherein the two tensioning blocks are sleeved on a spindle to be machined in a back-to-back mode and are in contact with left and right shoulders of the spindle to be machined, the two sliding inner jacking blocks are clamped in the tensioning blocks respectively, the outer walls of the sliding inner jacking blocks abut against the inner side walls of the tensioning blocks, the nuts are arranged at one ends, far away from the tensioning blocks, of the two sliding inner jacking blocks respectively, two sets of self-rotation centering fixtures are sleeved on the spindle, the hexagonal nuts are rotated and locked, the sliding inner jacking blocks are pushed to be pressed forwards, the nuts enter the inner walls of the tensioning blocks to expand one ends of the tensioning blocks, the other ends of the tensioning blocks are pressed tightly, radial force is generated, the inner diameter of a workpiece can be jacke.

According to the self-rotating centering clamping mechanism, the outer wall of the tensioning block is a cylindrical surface, and the groove formed in the tensioning block is a circular truncated cone-shaped groove.

According to the self-rotating centering clamping mechanism, the central position of the bottom surface of the groove is provided with a central hole for a shaft rod to be processed to pass through.

In the self-centering clamping mechanism, the peripheral side of the tensioning block is provided with an edge groove.

According to the self-centering clamping mechanism, one section of the side groove extends from the outer edge of the upper end of the tensioning block to the bottom surface of the groove, and the other section of the side groove extends from the outer edge of the bottom surface of the tensioning block to a position close to the central hole of the bottom surface of the groove and has a certain distance with the central hole.

In the self-centering clamping mechanism, the number of the side grooves on the peripheral side of the tensioning block is 6.

According to the self-rotating centering clamping mechanism, the sliding inner ejector block is a circular truncated cone body provided with a circular boss on a large circular truncated cone surface, and an inner ejector block center hole for a shaft rod to be processed to penetrate through is formed in the sliding inner ejector block along the axial direction.

According to the self-centering clamping mechanism, the taper of the outer wall of the sliding inner top block is the same as that of the groove of the tensioning block.

According to the self-rotating centering clamping mechanism, a round angle is arranged between the outer wall of the groove and the bottom surface.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses spin centering clamping mechanism, rotating hexagon nut, hexagon nut locking pushes away and slides interior kicking block preceding pressure, gets into tensioning piece inner wall and props tensioning piece one end big, and the tensioning piece other end compresses tightly, produces radial force, can withstand the work piece internal diameter, not only realizes the work piece centering, and loading and unloading are simple and convenient moreover, the easy operation.

2. The utility model discloses spin centering clamping mechanism installs two sets of spin centering anchor clamps at the work piece both ends of required processing, has processed the back when the circumference of dabber, need not to dismantle the clamping once more, can process the dabber terminal surface, avoids the secondary clamping, influences concentricity and yardstick difference, improves work piece machining precision.

3. The utility model discloses spin centering clamping mechanism establishes two sets of spin centering anchor clamps at the spindle upper cover, presss from both sides tight centering to the work piece both ends, according to two points a ray of principle for pressing from both sides tight more stable to the dabber, fixed effectual, not only realize the centering, improve the machining precision, can also prevent that the dabber from rocking to lead to damaging the plug surface man-hour, reduce the waste product and produce, reduce the rejection rate, thereby reduce cost.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of the tensioning block;

fig. 4 is a perspective view of the sliding inner top block.

[ detailed description ] embodiments

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the terms are used for distinguishing only when they do express the ordinal order in context.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in the figure, the self-centering clamping mechanism comprises two tensioning blocks 1 provided with grooves 8, two sliding inner jacking blocks 2 and two nuts 3, the two tightening blocks 1 are sleeved on the mandrel 4 to be processed in a back-to-back manner and are contacted with the left and right shoulders 9 of the mandrel 4 to be processed, the two sliding inner top blocks 2 are respectively clamped in the tensioning block 1, the outer wall of each sliding inner top block 2 is abutted against the inner side wall of the tensioning block 1, the nuts 3 are respectively arranged at one ends of the two sliding inner top blocks 2 far away from the tensioning block 1, the nuts 3 are locked to push the sliding inner top blocks 2 to press forwards, so that the outer wall of the sliding inner top block 2 expands the tensioning block 1, the other end of the tensioning block 1 generates radial force, can withstand the work piece internal diameter, two sets of spin centering anchor clamps are established to the cover on the dabber, according to two points one line's principle, fixed effectual, not only realize the centering, improve the machining precision, can also prevent that the dabber from rocking to lead to damaging the plug surface during processing.

Furthermore, the outer wall of the tensioning block 1 is a cylindrical surface, and the groove 8 arranged on the tensioning block 1 is a circular truncated cone-shaped groove.

Still further, a central hole 5 for the shaft rod 4 to be processed to pass through is arranged at the central position of the bottom surface of the groove 8.

Specifically, the tension block 1 is provided with a side groove 7 on the peripheral side.

More specifically, one section of the side groove extends from the outer edge of the upper end of the tensioning block 1 to the bottom surface of the groove 8, and the other section of the side groove extends from the outer edge of the bottom surface of the tensioning block 1 to a position close to the central hole 5 of the bottom surface of the groove 8 and has a certain distance with the central hole 5.

In addition, the number of the side grooves 7 on the peripheral side of the tension block is 6.

Furthermore, the sliding inner top block 2 is a circular truncated cone body provided with a circular boss 10 on a large circular truncated cone surface, and the sliding inner top block 2 is provided with an inner top block center hole 6 for a shaft rod 4 to be processed to penetrate through along the axial direction.

In addition, the taper of the outer wall of the sliding inner top block 2 is the same as that of the groove 8 of the tensioning block 1.

And finally, a fillet 11 is arranged between the outer wall and the bottom surface of the groove 8.

The utility model provides a spin centering clamping mechanism, carry out the finish machining to specific work piece, install the work piece both ends at required processing spin centering anchor clamps, rotating hexagon nut, hexagon nut locks, push up the piece in the slip before, it props big to get into tensioning piece inner wall tensioning piece one end, the tensioning piece other end compresses tightly, can withstand the work piece internal diameter, after the circumference of dabber has processed, need not to dismantle the clamping once more, can process the dabber terminal surface, avoid the secondary clamping, influence concentricity and yardstick difference, improve work piece machining precision, press from both sides tight centering to the work piece both ends, it is fixed effectual according to two-point one-line principle, not only realize the centering, improve the machining precision, can also prevent that the dabber from rocking and leading to damaging the plug surface man-hour, reduce the waste product and produce, reduce the rejection rate, thereby reduce cost.

The foregoing is illustrative of one embodiment provided in connection with the detailed description and is not intended to limit the invention to the specific embodiment described. All with the utility model discloses a method, structure etc. are similar, the same, or to the utility model discloses make a plurality of technological deductions or replacement under the design prerequisite, all should regard as the utility model discloses a protection scope.

Claims (9)

1. The utility model provides a spin centering clamping mechanism, its characterized in that, kicking block (2) and two nuts (3) in two tensioning block (1), two slides that are equipped with recess (8), two tight piece (1) dorsad cover establish wait to process on excellent (4) and wait to process excellent (4) on two shoulders (9) contacts, kicking block (2) block respectively in two slides in tensioning block (1), kicking block (2) outer wall offsets with tensioning block (1) inside wall in sliding, tensioning block (1) one end is kept away from in kicking block (2) two slides respectively in nut (3).

2. A spin-centering clamping mechanism as claimed in claim 1, wherein: the outer wall of the tensioning block (1) is a cylindrical surface, and the groove (8) formed in the tensioning block (1) is a circular truncated cone-shaped groove.

3. A spin-centering clamping mechanism as claimed in claim 1, wherein: and a central hole (5) for the shaft rod (4) to be processed to pass through is arranged at the central position of the bottom surface of the groove (8).

4. A spin-centering clamping mechanism according to claim 2, wherein: the peripheral side of the tensioning block (1) is provided with a side groove (7).

5. A spin-centering clamping mechanism according to claim 4, wherein: one section of the side groove extends to the bottom surface of the groove (8) from the outer edge of the upper end of the tensioning block (1), and the other section of the side groove extends to a position close to the central hole (5) of the bottom surface of the groove (8) from the outer edge of the bottom surface of the tensioning block (1) and has a certain distance with the central hole (5).

6. A spin-centering clamping mechanism according to claim 4, wherein: the number of the side grooves (7) on the peripheral side of the tensioning block is 6.

7. A spin-centering clamping mechanism as claimed in claim 1, wherein: the sliding inner ejector block (2) is a circular table body provided with a circular boss (10) on a large circular table surface, and an inner ejector block center hole (6) for a shaft rod (4) to be processed to penetrate through is formed in the sliding inner ejector block (2) in the axial direction.

8. A spin-centering clamping mechanism as claimed in claim 1, wherein: the taper of the outer wall of the sliding inner top block (2) is the same as that of the groove (8) of the tensioning block (1).

9. A spin-centering clamping mechanism according to claim 2, wherein: and a fillet (11) is arranged between the outer wall and the bottom surface of the groove (8).

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