A circular blank clamping device

Abstract

The present invention relates to a circular blank clamping device, which comprises two front and rear bases (1). Two guide sleeves (2) are symmetrically arranged on the left and right of the base (1). A crank arm (3) is inserted into the guide sleeve (2). A winding drum (4) is arranged below each guide sleeve (2). A steel wire rope (5) is wound around the winding drum (4). The lower end of the crank arm (3) is connected to the steel wire rope (5) on the corresponding winding drum (4). The circular blank clamping device of the present invention can clamp and position the circular blank, prevent the blank from lifting during the processing, and will not affect the normal rotation of the circular blank during grinding and the normal grinding of the blank by the grinding wheel.

Description

Technical Field

[0001] The present invention relates to a holding device for circular blanks (such as rolls), which is mainly applied to removing defects such as flash, scar tumors, and ladle sand and basic allowances from the surface of the original blanks in the roll manufacturing industry, and belongs to the technical field of metallurgical machinery. Background Art

[0002] The original roll blanks are formed by casting, and hard metal inclusions will be formed on the surface. Before finish grinding, the inclusions need to be removed. Usually, rough turning is used to remove them. However, since this layer contains molding sand, the turning tool is easily damaged and the working efficiency is low. Currently, a heavy-duty rough grinding process is generally adopted, and at least the efficiency can be increased by 2 times the original output.

[0003] There are many specifications for rolls, and the corresponding specifications of the cast original blanks are also numerous, with their own weights ranging from several hundred kilograms to more than ten tons. For small-sized original blanks, when grinding with a load applied at the journal position, their own weight is not sufficient to overcome the tipping force generated by the grinding downward pressure, and the non-grinding end will have a phenomenon of tipping up, affecting the normal progress of production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a holding device for circular blanks in view of the above-mentioned prior art, which can hold and position the circular blanks, prevent the blanks from tilting up during the processing, and will not affect the normal rotation of the circular blanks during grinding and the normal grinding of the blanks by the grinding wheel.

[0005] The technical solution adopted by the present invention to solve the above problems is: a holding device for circular blanks, which includes two front and rear bases. Two guide sleeves are symmetrically arranged on the left and right of the bases. A crank arm is inserted into the guide sleeve. A drum is arranged below each guide sleeve. A steel wire rope is wound around the drum. The lower end of the crank arm is connected to the steel wire rope on the corresponding drum.

[0006] Optionally, the two left and right guide sleeves are arranged at a certain angle.

[0007] Optionally, the angle between the two left and right guide sleeves is 40 - 80°.

[0008] Optionally, the angle between the two left and right guide sleeves is 60°.

[0009] Optionally, a roller is arranged at the upper end of the crank arm.

[0010] Optionally, the drum is driven by a driving mechanism.

[0011] Optionally, the crank arm includes a lower guiding section and an upper holding section, and the lower guiding section and the upper holding section are arranged at a certain angle.

[0012] Optionally, a return spring is arranged between the crank arm and the guide sleeve.

[0013] Optionally, a first retaining ring is arranged at the lower part inside the guide sleeve, a second retaining ring is arranged at the upper part of the crank arm, and the return spring is arranged between the first retaining ring and the second retaining ring.

[0014] Optionally, a synchronizing gear is arranged on the reel, and the synchronizing gears of the two reels on the left and right are meshed with each other.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. The present invention can hold and position the circular blank, prevent the blank from tilting during the processing, and will not affect the normal rotation of the circular blank during grinding and the normal grinding of the grinding wheel on the blank.

[0017] 2. The present invention can solve the problem of holding and positioning circular blanks of various specifications, and has strong versatility.

[0018] 3. The holding position of the present invention is at the positions 60° on the left and right sides of the top of the center of the blank, which does not affect the alignment grinding of the grinding head at the top of the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a circular blank holding device of the present invention.

[0020] Figure 2 It is a schematic diagram of the working state of a circular blank holding device of the present invention.

[0021] Among them:

[0022] Base 1

[0023] Guide sleeve 2

[0024] Crank arm 3

[0025] Reel 4

[0026] Steel wire rope 5

[0027] Roller 6

[0028] Groove 7

[0029] Return spring 8

[0030] First retaining ring 9

[0031] Second retaining ring 10

[0032] Synchronizing gear 11

[0033] Blank 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described in detail below with reference to the embodiments of the drawings.

[0035] See Figure 1 、 Figure 2 A circular blank clamping device involved in the present invention includes two front and rear bases 1, and the two front and rear bases 1 are both arranged on a grinding trolley. Two guide sleeves 2 are symmetrically arranged on the left and right on the base 1. A crank arm 3 is inserted into the guide sleeve 2. A winding drum 4 is arranged below each guide sleeve 2. A steel wire rope 5 is wound around the winding drum 4. The lower end of the crank arm 3 is connected to the steel wire rope 5 on the corresponding winding drum 4. The winding drum can pull the crank arm downward by winding the steel wire rope, so that the crank arm slides downward in the guide sleeve, and finally the two left and right crank arms clamp the blank;

[0036] The two left and right guide sleeves 2 are arranged at a certain angle, so the crank arms in the two left and right guide sleeves 2 are also arranged at a certain angle, so that the area between the two left and right crank arms is exposed, which will not affect the grinding of the grinding head on the top of the blank in alignment;

[0037] Optionally, the angle between the two left and right guide sleeves 2 is 40-80°;

[0038] Preferably, the angle between the two left and right guide sleeves 2 is 60°;

[0039] The crank arm 3 includes a lower guiding section 31 and an upper clamping section 32, and the lower guiding section 31 and the upper clamping section 32 are arranged at a certain angle;

[0040] A roller 6 is arranged at the upper end of the crank arm 3. When the crank arm clamps the blank, the roller contacts the blank, which will not affect the rotation of the circular blank during the grinding process, and because the friction between the roller and the blank is rolling friction, the grinding process will not affect the surface quality of the blank;

[0041] A slot 7 is arranged at the upper end of the crank arm 3, and the roller 6 is arranged in the slot 7 and fixed by a pin shaft, a pressing plate and a bolt;

[0042] The winding drum 4 is driven by a driving mechanism, and the driving mechanism can make the winding drum wind or unwind the steel wire rope;

[0043] The driving mechanism adopts a reducer;

[0044] Preferably, the driving mechanism adopts a hydraulic reducer;

[0045] A return spring 8 is arranged between the crank arm 3 and the guide sleeve 2. After the blank grinding is completed, the driving mechanism relaxes the winding drum, and the crank arm 3 returns to its original position under the action of the return spring 8. At this time, the crank arm releases the blank, and the blank can be lifted;

[0046] A first retaining ring 9 is arranged at the lower part inside the guide sleeve 2, a second retaining ring 10 is arranged at the upper part of the crank arm 3, and the return spring 8 is arranged between the first retaining ring 9 and the second retaining ring 10;

[0047] A synchronous gear 11 is provided on the reel 4, and the synchronous gears 11 of the left and right reels 4 are meshed with each other, so as to ensure the consistency of the actions of the left and right crank arms.

[0048] In addition to the above embodiments, the present invention also includes other embodiments. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present invention.

Claims

1. A circular blank clamping device, characterized in that: It includes two front and rear bases (1), on which two guide sleeves (2) are symmetrically arranged left and right. A crank arm (3) is inserted in the guide sleeve (2). A reel (4) is arranged below each guide sleeve (2). A steel wire rope (5) is wound around the reel (4). The lower end of the crank arm (3) is connected to the steel wire rope (5) on the corresponding reel (4). The two guide sleeves (2) on the left and right are arranged at an angle. A roller (6) is arranged at the upper end of the crank arm (3). The crank arm (3) includes a lower guiding section (31) and an upper clamping section (32), and the lower guiding section (31) and the upper clamping section (32) are arranged at an angle. A return spring (8) is arranged between the crank arm (3) and the guide sleeve (2). A first retaining ring (9) is arranged at the lower part inside the guide sleeve (2), a second retaining ring (10) is arranged at the upper part of the crank arm (3), and the return spring (8) is arranged between the first retaining ring (9) and the second retaining ring (10). Synchronous gears (11) are arranged on the reels (4), and the synchronous gears (11) of the two reels (4) on the left and right are meshed with each other.

2. The circular blank clamping device according to claim 1, characterized in that: The angle between the two guide sleeves (2) on the left and right is 40° to 80°.

3. The circular blank clamping device according to claim 2, characterized in that: The angle between the two guide sleeves (2) on the left and right is 60°.

4. The circular blank clamping device according to claim 1, characterized in that: The reel (4) is driven by a driving mechanism.

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