JPH0323306B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotating vice that is convenient for use when fixing a workpiece to a table of a machine tool.

[Conventional technology and its problems]

Conventionally, when processing an article with a milling machine, for example, the workpiece was fixed directly to the table of the milling machine, so when processing each side of the same workpiece, it was necessary to fix it again each time the machined surface was changed. This was necessary, was troublesome, and reduced work efficiency.

[Means for solving problems]

The present invention has a fixing plate that is provided with a fixing plate and a pivot plate facing each other at both ends and can be appropriately fixed on a table of a machine tool, and a fixing jaw provided at one end that overlaps with the inner surface of the fixing plate. , and a rotating fitting provided at the other end overlaps the inner surface of the pivot plate, and both ends are rotatably supported on the fixed base with spherical bearings. It has a tapered part that fits into a provided taper hole, and a threaded part that penetrates the fixing plate and protrudes outward, and by tightening the nut plate that is screwed into the threaded part, the tapered part and the nut plate are connected. a rotary table which is fixed to the fixed table by sandwiching the fixed plate between the two;
The indexing plate has multiple engagement grooves cut into its circumferential surface and the indexing tube is fixed to a fixed base, and the engagement protrusion at the tip can be manually engaged with the engagement groove of the indexing plate. A rotation angle indexing device for the rotary table consisting of a removable index pin, and a rotation angle indexing device for the rotary table, which is screwed onto the rotation axis of the rotary table in the rotating bracket of the rotary table, and the center of the spherical bearing on the pivot plate side of the fixed table. A screw rod that passes through the pivot plate, and a screw rod that is pivoted to the inner end of the screw rod, facing the fixed jaw of the rotary table, so that it cannot rotate relative to the rotary table, but can rotate freely in the direction of movement of the screw rod. The workpiece is fixed to the table via a rotating vise consisting of a movable jaw supported on the table, and the workpiece is rotated and fixed on the rotating vise with an extremely simple operation without removing the workpiece from the table. This is an attempt to solve the above-mentioned problems by making it possible.

[Effect]

The rotary vise of the present invention has a fixed base appropriately fixed to the table of a machine tool, a workpiece gripped by a rotary base provided on the fixed base so as to be rotatable and fixed, and the rotary base rotated. After the desired surface of the workpiece is oriented in the processing direction, by fixing the rotary table to the fixed table, each desired surface can be sequentially processed without removing the workpiece from the table.

〔Example〕

Figure 1 shows the mounting groove 2 of the table 1 of a milling machine.
This figure shows the rotary vise of the present invention installed with a clamp 8, bolt 4, and nut 5.

6 is a fixed base of a rotating vise, and a horizontal board 7
A fixing plate 8 and a pivot plate 9 are erected on both left and right ends of FIG. are engaged, and the fixed base 6 is fixed to the table 1.

11 is removably fixed to key points on the bottom surface of the board 7, and when attaching the rotating vise to the table 1,
This is a guide piece that is engaged with the mounting groove 2.

Reference numeral 12 denotes a rotating table, and in the lower part of FIG.
A fixed jaw 14 and a rotating metal fitting 15 are provided upright at both left and right ends of the housing.

On the left side of the fixed jaw 14, a coaxial tapered part 16, a cylindrical part 17, and a threaded part 18 are successively arranged in order from left to right.

The tapered portion 16 is fitted into a tapered hole 19 drilled in the fixing plate 8, the cylindrical portion 17 is pivotally supported by the fixing plate 8 with a spherical bearing 20, and the threaded portion 18 projects leftward from the fixing plate 8. A nut plate 21 is screwed onto the nut plate 21, and a handle 22 is attached to the nut plate 21.

The rotating fitting 15 has a coaxial pivot tube 23.
Mounting tubes 24 having a slightly smaller diameter than the pivot tube 23 are successively arranged toward the right.

The rotating fitting 15 is pivoted to the pivot plate 9 of the fixed base 6 with a spherical bearing 25 in the pivot tube 23, and the mounting tube 24 projects slightly to the right from the pivot plate 9.
A disc-shaped indexing plate 26 is fitted into the mounting tube 24.
It is fixed with a nut 27 screwed onto the tip of the.

As shown in FIG. 3, on the periphery of the index plate 26,
Four engaging grooves 28 are cut out, spaced apart by 90° from each other.

Index tube 29 fixed to the left side of the pivot plate 9 in FIG. 3
An index pin 31 biased toward the index plate 26 by a compression spring 30 is slidably fitted inside.

An engagement protrusion 32 is protruded from the tip of the index pin 31 (right end in FIG. 3), and a knob 3 is also provided from the base end.
3 is attached, and the engaging protrusion 32 is engaged with one of the engaging grooves 28 of the index plate 26.

A screw rod 34, which faces the left-right direction in FIG. It is installed.

A movable jaw 36, which faces the fixed jaw 14, is attached to the inner end of the screw rod 34 so as to be rotatable relative to the screw rod 34 and immovable from side to side.

The movable jaw 36 has a guide rod 37 fixed to its lower surface.
However, by fitting between both connecting rods 13 of the rotating table 12, mutual rotation with respect to the rotating table 12 is prevented.

In the above-described rotating vice, when the nut plate 21 of the fixed jaw 14 of the rotary table 12 is tightened by operating the handle 22, the fixed jaw 14 is fixed to the rotary plate 8 of the rotary table 6. 12 is fixed to the table 1 via the rotary table 6.

The fixed jaw 14 and the movable jaw 3 of this rotary table 12
When a workpiece (not shown) is inserted between the two jaws 6 and the movable jaw 36 is brought into pressure contact with the workpiece by operating the knob 35, the workpiece is held between both jaws 14 and 36, and The member and the workpiece are fixed together on the table 1, and one side of the workpiece can be machined.

When one side has been processed, the handle 22 is operated to loosen the nut plate 21 and tighten the index tube 29.
By pulling the knob 33 and removing the engagement protrusion 32 of the index pin 31 from the engagement groove 28 of the index plate 26, the rotary table 12 becomes rotatable while holding the workpiece.

Therefore, as shown by the imaginary line in FIG. The rotary table 12 is temporarily fixed by engaging with the groove 28, and when the nut plate 21 is tightened again, the workpiece is fixed to the table 1 through the main rotary vise.

〔Effect of the invention〕

As described above, by using the rotating vise of the present invention, each surface of the workpiece can be oriented in the processing direction with a simple operation without removing the workpiece from the table, thereby significantly improving work efficiency.

Further, according to the present invention, the following effects can be achieved.

(a) Both ends of the rotary table are pivotally supported on the fixed table using spherical bearings, and by tightening the screw rods, the warping of the rotary table when a workpiece is clamped between the fixed jaw and the movable jaw is prevented. The tilt of the pivot portion of the rotary table can be absorbed by the spherical bearing, so that the rotary table can rotate smoothly at all times.

In other words, if such a spherical bearing is not provided, when the workpiece is tightened, the rotary table will warp (elastic deformation) in which the fixed jaw and the rotating bracket expand against each other, and the rotary table will be distorted at that time. Due to the inclination of the pivot, the rotary table may become stuck with respect to the rotary table, and the rotation of the rotary table may become impossible or unsmooth. However, by providing a spherical bearing as in the present invention, this can be avoided. It can be resolved.

(b) By tightening the nut plate that is screwed into the threaded part of the rotary table, the fixed plate is sandwiched between the nut plate and the tapered part that fits into the tapered hole of the fixed plate, and the rotary table is fixed to the fixed plate. By making it possible to fix the rotary table to the fixed table, it is possible to provide a slight amount of play between the rotary table and the fixed table in order to smooth the rotation of the rotary table, which is related to the effect of (a) above. .

In other words, when the nut plate is loosened, the above-mentioned play absorbs the warping of the turntable and allows the turntable to rotate smoothly, and when the nut plate is tightened, the turntable is fixed. By being fastened to the fixed plate side of the table, the rotary table and the workpiece supported thereon can be fixed at a fixed position at all times, thereby improving the processing accuracy of the workpiece.

(c) By arranging the screw rod that moves the movable jaw on the rotation axis of the rotary table, the reaction force when gripping the workpiece due to the tightening of the screw rod acts only on the rotation axis of the rotary table, and does not act in other directions. (Excluding stress due to warping of the rotary table at this time), the rotary table can smoothly rotate relative to the fixed table.

In other words, the further away the screw rod is from the rotating axis of the rotary table, the greater the component force (moment) that tends to tilt the pivot portion of the rotary table when tightening the screw, and the more uneven the rotation of the rotary table becomes. However, with the above configuration, this component force can be made as small as possible.

[Brief explanation of drawings]

FIG. 1 is a central longitudinal sectional front view of the rotating vice of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a view taken along line A-A in FIG. 1, and FIG. It is a sectional view taken along the line BB in the figure. 1...Table, 2...Mounting groove, 3...Clamp, 4
... Bolt, 5... Nut, 6... Fixing base, 7... Board,
8...fixing plate, 9...pivot plate, 10...horizontal hole, 11...
Guide piece, 12... Turntable, 13... Connecting rod, 14... Fixed jaw, 15... Rotating metal fitting, 16... Taper part, 1
7...Cylindrical part, 18...Threaded part, 19...Tapered hole,
20... Spherical bearing, 21... Nut plate, 22... Handle, 23... Pivot tube, 24... Mounting tube, 25... Spherical bearing, 26... Index plate, 27... Nut, 28... Engagement groove, 29... Index Cylinder, 30... Compression spring, 31... Index pin, 32... Engaging protrusion, 33... Knob, 34... Screw rod, 35... Knob, 36... Movable jaw, 37... Guide rod.

Claims (1)

[Scope of Claims] 1. A fixing table that has a fixing plate and a pivot plate facing each other at both ends and can be appropriately fixed on a table of a machine tool, and a fixing jaw provided at one end that is attached to the inner surface of the fixing plate. and a rotating metal fitting provided at the other end overlaps with the inner surface of the pivot plate, and both ends are rotatably supported on the fixed base with spherical bearings. It has a tapered part that fits into a tapered hole provided in a fixing plate, and a threaded part that penetrates the fixed plate and protrudes outward, and the tapered part can be removed by tightening a nut plate that is screwed into the threaded part. and a nut plate, the rotary table being fixed to the fixed base by sandwiching the fixing plate;
The indexing plate has multiple engagement grooves cut into its circumferential surface and the indexing tube is fixed to a fixed base, and the engagement protrusion at the tip can be manually engaged with the engagement groove of the indexing plate. A rotation angle indexing device for the rotary table consisting of a removable index pin, and a rotation angle indexing device for the rotary table, which is screwed onto the rotation axis of the rotary table in the rotating bracket of the rotary table, and the center of the spherical bearing on the pivot plate side of the fixed table. A screw rod passes through the pivot plate, and is pivoted to the inner end of the screw rod, facing the fixed jaw of the rotary table, so that it cannot rotate relative to the rotary table, but can rotate freely in the direction of movement of the screw rod. A rotating vise characterized by having a movable jaw supported on a stand.