JPS58192760A - Method and device for correcting flexure in machine vice - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for correcting deflection in a machine vise.

Conventionally, when a workpiece is clamped with a machine vise, the pressure causes the machine vise to bend and open the top of the jaw, which causes the workpiece to rise and create a gap between the base and the workpiece. Therefore, the reference surface of the workpiece was determined by hitting the top surface of the workpiece to bring it into close contact with the base surface. However, when using this method, it is easy to damage the workpiece, and it is difficult to determine an accurate reference surface. The more strongly the workpiece was held, the greater the deflection and lifting of the workpiece, making it impossible to hold the workpiece strongly and accurately.

In view of such problems, the present invention provides a pair of ferrules that can freely slide in the vertical direction, and is equipped with a device that can pull the ferrules downward, thereby pulling down the workpiece that has been lifted up by the bending of the machine vise together with the ferrules. This is a method and device for correcting deflection in a machine vise, in which the bottom surface of a workpiece is brought into close contact with the base surface, and the reference surface can be strongly clamped with the base surface accurately held.

An embodiment of the deflection correction device according to the method of the present invention will now be described with reference to the drawings.

In the figure, (1) is the base, and the sliding protrusion for the cap (
a > (a) is provided vertically, and a cap sliding groove (b) (b) is provided on both inner walls of the socket cap (2), and the cap sliding groove (b) (b) and the cap sliding convex state (
a ) (A >) are fitted so that the socket (2) can be slid vertically, and guide grooves (C) are provided horizontally on both upper side walls of the base (1). ) are provided with sliding protrusions (d >
(d), and provide the movable base (3) so that it can slide on the base (1).
A sliding protrusion (a) (a) for the cap is vertically provided on both walls of the tip end of the movable cap (4), and this is fitted into a cap sliding groove (b) (b) provided on both inner walls of the movable cap (4). Also move the cap (
4) is provided so that it can be slid vertically.

In addition, there is also a case where the WI moving convex strip for the cap (a) and the cap sliding groove (b) are inclined upwardly to allow the cap (2>(4)) to move up and down in an oblique direction. be.

(5) (5) is a modified rod, with sliding grooves (e) provided on both sides of the base (1) that slope downward as it reaches the tip.
(e), and attach a protrusion ([) projecting outward from the correction rod (5) (5) parallel to the base (1) to the base (2>(
4) A pull-down groove ((] ) ((1
) is fitted.

In Figure 2 of the drawing, (6) is a square column-shaped feed at the rear end.
P.

It is a feed screw with a handle attachment part (h), and both ends are attached to the spindle hole (+
) and a support bearing <j> provided on the rear end of the base (1)
It is supported by and rotatably mounted. Further, an engaging piece (7) is screwed into the threaded part carved in the middle part of the sending screw rod (6), and engaging pieces (k) protruding from both sides of the engaging piece (7) are screwed together.
”) (k) is engaged with a vertically elongated hole (+) provided at the end of the correction rod (5) (5).

In addition, in Figures 3 and 4 of the drawings, (8) is a tightening screw with a square column-shaped tightening handle attachment part (rigid) at the rear end.
As shown in Figure 4 of the drawing, a reverse screw is carved and the movable cap base (3
), the middle part is supported by a bearing part (T) provided on the base (1), and the D-shaped bearing parts (T) are fixed rings provided on both sides (9) It is fixed to the screw rod (8) by (9).

Also, in Figures 1 and 3, (1o) is a tightening handle attachment part that is separate from the tightening screw (8), and in the center thereof there is a hexagonal prism-shaped locking hole (p) and a locking hole. The escape hole of the large-mouthed shuttle (than the hole (p)
q), and fit the hexagonal prism-shaped locking part (R) installed at the rear end of the tightening screw (8) into the locking hole (p), and then attach the tightening handle mounting part (10) to the locking hole (p). ) is provided so that one can be slidably engaged and detached from the tightening screw (8). (11) is a coil spring with low spring pressure, which is inserted into the outer circumference of the tightening screw (8) between the fixing ring (9) and the tightening handle attachment part (10), and the tightening handle attachment part (10) is After pressing outward to prevent the locking part (R) and locking hole (p) from coming loose, and pushing the tightening handle attachment part (10) into the escape hole (Q), apply force. Once loosened, the spring (11) can return to its original state using its restoring force.

(12) is a fixed gear fixedly attached to the feed screw rod (6), and a transmission gear (S) carved on the outer peripheral wall of the tightening handle attachment part (10) and a transmission gear (S) engraved on the outer peripheral wall of the tightening handle attachment part (10) 10) is provided so that the locking portion (R) and the locking hole (p) are engaged when the locking portion (R) and the locking hole (p) are disengaged by pushing.

Since the 7-thin vise of the present invention is constructed as described above, when using the product of the present invention, the workpiece is placed on the base (1) between the mouthpiece (2>(4)), and the tightening handle is tightened. (not shown) into the tightening handle mounting part (10) and turning the tightening handle, the tightening screw (8) rotates, and the movable base (3) screwed into it rotates. If the workpiece is moved forward on the base (1) along the guide grooves (C) (C) provided on both side walls of (1) and clamped by the Ll metal (2>(4)), the die (2> The upper side of (4) opens due to the bending due to the clamping pressure and lifts the workpiece from the base (1). At this time, fit the feed handle into the feed handle holder part 1 (h) of the feed screw (6). When the screw is inserted and the feed screw (6) is rotated, the engagement piece (7) that fits into the feed screw (6) moves forward, and the engagement elements protruding from both sides of the engagement piece (7) move forward. (k) (k) is the modified rod (5)
Since it is fitted into the vertical hole (+) (+) provided in (5), the correction rod (5) (5) advances diagonally downward as the engaging piece moves forward, and the correction rod (5) (5) Since the protrusion (f) provided on the outside of the base fits into the pull-down groove (0) provided on the inner wall of the end of the base (2>(4)), the correction rod (5) (5) moves forward as it moves forward. By pulling down the ferrules (2) and (4), the bottom surface of the workpiece is brought into close contact with the surface of the base (1), and the workpiece is strongly held.

In addition, in the case of the second embodiment, the tightening handle attachment part (10)
With the handle attached, press the tightening screw (8
) is moved from the locking hole (p) to the escape hole (q), and the transmission gear (S) provided on the outer peripheral wall of the tightening handle mounting portion (10) is moved to the screw rod (6). fixed gear (
12) and turn the tightening handle, the rotation is transmitted to the feed screw rod (6) and advances the engagement piece (7), and the correction rod (5> moves forward together with the engagement piece (7)). By lowering the base (2) and (4), the workpiece can be brought into close contact with the base (1) and strongly held.

As mentioned above, the machine vise of the present invention can clamp the workpiece while accurately maintaining the reference surface without damaging the workpiece, and can also increase the clamping pressure because conventionally strong clamping would increase the deflection. However, with the present invention, the workpiece can be held more strongly, so there is no risk of the workpiece coming off or moving during machining, which greatly improves work efficiency. It is effective.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an apparatus according to the present invention. Figure 2 is the same side view. FIG. 3 is a side view of the first embodiment of the present invention. FIG. 4 is a sectional view taken along the Y-Y line shown in FIG. 3. FIG. 5 is a sectional view taken along the line X-X shown in FIG. 3. FIG. 6 is a cross-sectional view of z-ze* shown in FIG. 3. Figure inside (1) is the base. (2) is the deposit. (4.) is a moving cap. (5> is a correction rod. (6) is the feed screw. (7) is an engaging piece. (8) is a tightening screw. (10) is the tightening handle attachment part. (12) is a fixed gear. (k) is an engaging element. (1) is a vertically elongated hole. (+1) is a locking hole. (Q) is an escape hole. (R) is a locking part. (S) is the transmission i gear.

Claims (3)

[Claims] (1) By providing a socket cap and a movable cap in a known machine vise so as to be movable in the vertical direction, and linking these caps with a pull-down mechanism provided on the machine vise body,
A method for correcting deflection in a machine vise, which is characterized by correcting the upward opening of the mouthpiece due to deflection by pulling down the upward opening of the mouthpiece, which occurs when clamping a workpiece, by operating a pull-down mechanism. (2) Movement of the socket holder in the known 7-thin vise [1 holder is provided so as to be slidable in the vertical direction, and pulling grooves are provided at the bottom of both sides of the holder, and the tip of the socket holder is provided on both sides of the base in this pulling groove. The convex strip of the correcting rod is fitted into the calendar movement groove that is sloped downward as it extends, and a vertically elongated hole is provided at the upper end of the correcting rod, and the engaging piece is inserted into the feed screw attached to the base. A deflection correction device for a machine vise, which is screwed together and has engaging elements protruding from both sides of the engagement piece that are held in a vertically elongated hole of the correction rod. (3) Attach the fixed gear to the feed screw attached to the base tJ
, the attachment part of the tightening handle is fitted to the tightening screw of the movable base mounted on the base parallel to this feed screw so that it can move forward and backward and can be engaged and detached, and the transmission that meshes with the fixed gear is attached to the outer periphery of the attachment part of the tightening handle. A deflection correction device for a machine vise according to claim 2, which is provided with a gear.