JPH0453683A - Vice - Google Patents

Abstract

PURPOSE:To perform the positional adjustment of a mark correctly and easily, by providing a serration part and a mark consisting of a graduation and datum line on a base and end part block. CONSTITUTION:A serration part 50 where a lot of teeth are arranged in the longitudinal direction is provided on a support face (base) 1 and teeth 51 meshed with the serration part 50 are provided on the end block 4 for performing the positional adjustment in the longitudinal direction, of end blocks 3, 4. Marks 52, 53 for showing the relative longitudinal position of both are provided on the end blocks 4 provided with the teeth 51 and the base 1.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vise for holding a workpiece to be machined, and more specifically, a vise that uses a wedge and a bolt to tighten the wedge. This invention relates to a vise that can firmly hold a workpiece.

[Prior Art] A vise of the type to which the present invention is directed is
No. 48,384 and U.S. Pat. No. 4,643.411. The vice described therein has a pair of blocks provided at both ends of a rod-like and block-like base, and a wedge arranged between the two blocks is tightened toward the base side with a bolt. Another block (clamp block) is attached to the wedge, and by tightening the bolts as described above, the workpiece is firmly held between the clamp block and the end block. Of the pair of end blocks mentioned above, the vertical position of one end block can be adjusted along the base, and by adjusting this, it is possible to clamp workpieces of various lengths. ing.

[Problems to be Solved by the Invention] The present invention further improves the above-mentioned vice and provides a structure that allows the position of the end block to be adjusted easily and accurately.

Furthermore, the surface of a workpiece held in a vise does not necessarily have a sufficiently high flatness, and may be inclined with respect to a desired direction. The present invention aims to provide a structure that can securely hold a workpiece regardless of such surface conditions.

Furthermore, when the workpiece is removed from the vise, in the conventional structure, the reaction force from the clamp block to the wedge is eliminated, so the wedge falls onto the base, and the next time the workpiece is mounted, the wedge is pulled up and the clamp block is removed. It is necessary to return it to the wedge side,
The present invention also aims to provide a structure that solves these problems.

[Means for Solving the Problems] The vise according to the present invention has a rod-shaped and block-shaped base formed with a guide surface extending in the longitudinal direction thereof, and a pair of end blocks sandwiching a workpiece installation space facing the guide surface. , a fixing means is provided for fixing both end blocks to the base in a state where the distance between them can be adjusted, and a wedge and a tightening mechanism for tightening the wedge toward the guide surface are vertically moved between the both end blocks. The workpiece installation space is formed between at least one end block and the wedge, and a clamp block is arranged so as to be movable only in the vertical direction between the wedge and each workpiece installation space. A work-engaging surface that engages with the work is formed on the surfaces of the end block and the clamp block that sandwich and oppose each other, and the wedge and the block adjacent thereto engage with each other to apply the tightening force of the tightening mechanism. The structure includes an inclined surface to convert the force into the workpiece installation space and apply it to the clamp block.

According to the present invention, in the vice having the above structure,
A serration section in which a large number of teeth are arranged vertically is provided on the support surface, and among the end blocks, an end block that adjusts the position in the vertical direction is provided with teeth that mesh with the serration section. It is characterized in that marks are provided on the end block and the base to indicate their relative vertical positions.

Further, the present invention is characterized in that, in the vise having the above-described structure, the hardness of the work-engaging portion is set to be lower than that of the inclined surface to a degree that allows machining.

Furthermore, the present invention provides a vise having the above structure, in which a groove extending in the vertical direction and opening into the support surface is provided in the base, a part of the clamp block is inserted into the groove, and the vertical position of the spring receiving piece is adjusted in the groove. It is characterized in that the spring that urges the clamp block toward the wedge is supported by a spring receiving piece.

Embodiment FIG. 1 is a partially cutaway side view of a vice according to an embodiment of the present invention. Figure 2 is a partially cutaway plan view of the vise in Figure 1.
More specifically, the upper half of FIG. 2 is a plan view, and the lower half is a sectional view taken along the line 1--2 of FIG. Figure 3 is the same as Figure 1.
4 is an enlarged partial view of FIG. 1.

In FIGS. 1 and 2, the vice includes a blower 2-shaped base 1 extending in the vertical direction (left-right direction in FIG. 1) and a rod-like base 1. A guide surface 2 is formed on the base 1 by a surface extending in the vertical direction and the horizontal direction (left-right direction in FIG. 3). In the drawings, the guide surface 2 is shown in a horizontal position, but in reality the vise shown is often attached to various machine tools and moved or rotated as a whole. Therefore, although the guide surface 2 is not necessarily horizontal,
In the following description, in order to make the explanation easier to understand, it is assumed that the guide surface 2 is formed by the horizontal upper surface of the base 1.

A pair of end blocks 3.4 are provided on the upper side of both ends of the base 1.
A wedge 5 is provided above the central portion of the base 1 in the longitudinal direction.

In the illustrated vice, two generally cubic workpieces W are arranged between an end block 3.4 and a wedge 5, respectively. A clamp block 7 is provided between each workpiece W and the wedge 5.
are arranged, and an engaging plate 9 is also provided on the workpiece W side surface of each end block 3.4 as will be described later.

The base 1 is provided with a guide groove 10 having a constant cross-sectional shape over its entire length. As is clear from FIG. 3, the guide groove 10 opens into the guide surface 2 and has an approximately inverted T-shaped cross-section, with the bottom portion being wider than the opening portion. It's getting wider. As shown in FIGS. 1 and 2, connecting members 13, 14, 15, a connecting portion 17, and a pair of spring receiving pieces 18 are arranged on the base 1. These members and portions have approximately the same cross-sectional shape as the guide groove 10, and are slidably in contact with, or almost in contact with, the entire inner surface of the guide groove 10 except for the bottom surface.

The connecting members 13.14 are respectively for attaching the end blocks 3.4 to the base 1, and
As shown in FIG. 3, the protrusion 20 at one end of the guide surface 2 slightly protrudes above the guide surface 2. As shown in FIG.

The lower surfaces of the end block 4 and the end block 3 (FIG. 1) have grooves 2 into which the protrusions 20 are fitted with a gap only in the vertical direction.
1 is provided. Also, as shown in FIGS. 1 and 2, each end block 3.4 and its corresponding connecting member 13.14
The caps each have a bolt insertion hole and a threaded hole spaced apart from each other in the vertical direction, and are fixed to each other by hexagonal hole cap bolts 24 installed in these holes from above.

With this construction, the end block 3.4 is fixed to the base 1.

Also, by temporarily loosening the bolts 24 of the end block 4, while the connecting member 14 is sliding within the guide groove 10,
The longitudinal position of the block 4 can be adjusted. Of course, the longitudinal position of the other end block 3 can be similarly adjusted, but normally the end block 3 is fixed in a fixed position. In addition, in applications where the position adjustment of the block 3 is not required at all, the block 3 may be formed integrally with the base 1.

The connecting member 15 is for generating a tightening force on the wedge 5, and is provided with a screw hole extending vertically, and the wedge 5 is provided with a bolt insertion hole concentric with the screw hole. Cap bolts 25 with hexagonal holes are attached to these holes from above. With the bolt 25 tightened as shown,
The wedge 5 is separated from the guide surface 2, and of course the connecting member 15
It's far away from.

The connecting portion 17 is connected to the main body of the clamp block 7 (guiding surface 2
It is formed integrally with the part that protrudes upward from the
Each clamp block is held in its entirety so as to be movable only in the vertical direction with respect to the base 1.

The spring receiving piece 18 is a plate-shaped member having a short length in the vertical direction, and is fixed to the base 1 by a set screw 26 at a position adjacent to the surface of the connecting portion 17 on the side opposite to the connecting member 15. As is clear from FIGS. 1 and 2, each spring receiving piece 18 is provided with a threaded hole that passes through its center part up and down, and a set screw 26 is attached to the lower part of the threaded hole. . The set screw 26 is tightened so as to be in pressure contact with the bottom surface of the guide groove 10, thereby fixing the spring receiving piece 18 to the base 1.

At the top of the spring receiving piece 18, there is a spring 2 extending in the vertical direction.
7 is installation. The spring 27 is partially inserted into a hole provided in the spring receiving piece 18, and one end is seated at the bottom of the hole, and the other end is pressed against the end surface of the connecting portion 17.

The engagement plate 9 is connected to each workpiece W of the end block 3.4.
It is fixed to the side surface with vertical bolts 3o. Further, as is clear from FIG. 2, the engaging portion 9 has a protrusion 3 at the center in the width direction that protrudes toward the corresponding block 3 or 4.
1, and each protrusion 31 is tightly fitted into a groove provided in the end block 3 or 4.

As shown in FIG. 1, the engagement surface 35 of the engagement plate 9 that engages with the workpiece W is a partially cylindrical surface in which the center portion in the vertical direction protrudes most toward the workpiece W side in the illustrated embodiment. By forming the engaging surface 35 in such a shape, the engaging surface 35
Even if the surface 36 of the work W to be engaged with is inclined with respect to the vertical direction (direction perpendicular to the longitudinal direction of the vise), the engagement surface 35 locally engages the work W and firmly holds it. Can be retained.

In the illustrated embodiment, the entire engagement surface 37 of the clamp block 7 that engages with the workpiece W is formed in a plane perpendicular to the vertical direction of the vise, and the workpiece that engages with the engagement surface 37 Almost the entire surface 38 of W is also parallel to the engagement surface 37. However, a projection 39 is provided on a portion of the workpiece surface 38, and a recess 40 into which the projection 39 fits is formed in the engagement surface 37. By providing such a recess 40, even if the workpiece W has the protrusion 39,
The engagement surface 37 allows a wide range of the workpiece to be supported reliably and firmly.

The above-described recess 40 is processed depending on the presence or absence of the protrusion 39 and its size and shape. That is, some clamp blocks 7 not provided with the recess 40 are prepared at the work site where the illustrated device is used or at another location, and when a workpiece W having the protrusion 39 is attached to a vise, a clamp block 7 corresponding to the protrusion 39 is prepared. A recess 40 having the dimensions and shape is machined into the clamp block 7, and the clamp block 7 is mounted in a vise as shown.

In order to enable such machining, at least the portion of the clamp block 7 forming the engagement surface 37 is not subjected to hardening treatment such as quenching treatment. That is, in general, parts for tightening metal workpieces are hardened as a whole, but in the illustrated structure, unlike such conventional general technology, the inclined surface 42 (described later) that engages with the wedge 5 is hardened. At least the engaging surface 37 is not hardened.

As described above, a flat engagement surface with low hardness (easily machined) may be employed as the engagement surface 35 of the engagement plate 9. Furthermore, the hardness of the partially cylindrical engaging surface 35 of the illustrated engaging plate 9 can also be set relatively low. Of course, it is also possible to prepare several engagement plates 9 with different specifications of the engagement surfaces 35 in advance and replace the engagement plates 9 according to the workpiece W. It is also possible to provide the clamp block 7 with a partially cylindrical engagement surface, such as the illustrated engagement surface 35. Regardless of the shape, by setting the hardness of the engaging surfaces 35 and 37 to be relatively low as described above, the workpiece W can be made into a cast product before being finished. When the workpiece surface 36 or 38 is rough and hard, it is expected that small convex portions on the workpiece surface will bite into the engagement surface 35 or the engagement surface 37, thereby increasing the workpiece holding force. can.

Of course, when the surfaces 36 and 38 of the workpiece W are flat surfaces finished with high precision, as the engagement surfaces 35 and 37,
It is better to form a surface with high hardness and flatness.

The inclined surface 42 of the clamp block 7 mentioned above is in close contact with the inclined surface 43 of the wedge 5. The inclined surfaces 42, 43 are inclined so as to approach the bolt 25 as they go toward the guide surface 2 side. Therefore, when the bolt 25 is tightened, as in the conventional case, due to the action of the inclined surfaces 42 and 43, the tightening force is applied from the wedge 5 to the clamp block 7 as a force in the longitudinal direction of the vice, and this force causes the clamp block 7 and the engagement plate to The workpiece W is held between the two.

When the machining of the workpiece W is completed, the bolt 25 is turned in the opposite direction, whereby the force from the wedge 5 to the clamp block 7 is released and the workpiece W can be removed. When the work W is removed, there is no longer a member supporting the clamp block 7 from the side opposite to the wedge 5, so the wedge 5 tends to fall onto the guide surface 2 due to its own weight. If the wedge 5 were to fall, the next time to attach the workpiece W, it would be necessary to pull up the wedge 5 and return the clamp block 7 to its original position, but since the inclined surfaces 42 and 43 are in close contact with each other, the wedge 5 It is difficult to pull up. In order to prevent such falling of the wedge 5, the above-mentioned spring receiving piece 18 is provided.

As mentioned above, the spring receiving piece 18 is fixed to the base 1 by the set screw 26, and the spring 27 urges the clamp block 7 toward the connecting member 15.
Both clamp blocks 7 are always pressed toward the wedge 5 during casting. Therefore, even if the workpiece W is removed, the clamp block 7
does not move toward the engagement plate 9, and maintains a sufficient distance from the engagement plate 9 to allow a new workpiece W to be attached.

In the illustrated structure, two relatively short works W are attached, but instead of them, it is also possible to attach one long work. For this purpose, an inclined surface 45 having the same inclination angle as the inclined surface 42 is provided on the end surface of the end block 4 opposite to the engagement plate 9. When attaching a long workpiece, remove the clamp block 7 on the right side in Fig. 1 from the base 1, attach the end block 4 to the base 1 in the left-right opposite position to that shown in Fig. Slope 4
3 is engaged with the inclined surface 45. This allows the engagement plate 9 attached to the end block 3 and the remaining clamp block 7 to
A long work installation space can be formed between the clamp block 7 and the clamp block 7, and a work can be mounted there, and a clamping force can be applied to the clamp block 7 by the wedge 5 using the inclined surface 45.

Regardless of whether one workpiece or two workpieces are attached, if the length of the workpieces changes, it is necessary to adjust the position of the end block 4 in the longitudinal direction accordingly.

After machining the illustrated workpiece (first workpiece), when another shorter workpiece (second workpiece) is to be machined, the end block 4 is adjusted to correspond to the length of the workpiece and moved to the previous position (original workpiece). Move from digit M) to the left in Figure 1. Next, after machining of the second workpiece (or another workpiece) is completed, if the first workpiece is to be machined again, it is necessary to return the end block 4 to its original position. In order to easily and accurately adjust and reset the position, the structure shown has the following features.

As shown in FIG. 4, a serration portion 50 is provided in the guide groove 10 of the guide surface 2, and a serration portion 51 that engages with the serration portion 50 is also provided on the lower surface of the end block 4 and the end block 3 (FIG. 1). It is a provision. The teeth each extend in the transverse direction (width direction of the vise) and are lined up with each other in the longitudinal direction.

The tooth bottom of the serration portion 50 is rounded, and the tooth tip is formed flat in order to place the clamp block 7 shown in FIG. 1 thereon. The serration portion 51 also has a similar shape.

According to this structure, the end block 4 is connected to the serration section 5.
It is possible to move accurately by 0 pitch. Further, in order to facilitate confirmation of the position, a scale 52 is provided on one or both sides of the base 1, although only a portion thereof is shown. Further, on both or one side of the end block 4, a reference line 53 that pairs with the scale 52 is provided.

The scale 52 can be provided over the entire length of the base 1, or can be provided only in the range where the scale is actually required.

In the illustrated structure, a serration portion 51 that engages with the serration portion 50 is also provided on the lower surface of the end block 3, and the base 1! Line 53 is provided. The end block 3 is usually always fixed at a fixed position regardless of the length of the workpiece W, but according to this structure, in some cases, the end block 3
The longitudinal position of can also be easily and precisely adjusted.

Moreover, by providing the serrations 51, even when the end block 3 is always maintained at a constant position, the positioning accuracy can be improved.

[Effects of the Invention] As explained above, according to the present invention, the serration portion 5
0.51, a scale 52, and a reference line 53 are provided on the base 1 and the end block 4, so that the position can be adjusted accurately and easily.

Furthermore, according to the present invention, the engaging surface 3 of each part of the vise with the workpiece
By setting the hardness of 5.37 to a relatively low value, the workpiece W can be processed without being affected by the surface accuracy or roughness of the workpiece W.
can be held accurately and firmly.

Furthermore, since the clamp block 7 connected to the wedge 5 is biased toward the wedge 5 by the spring receiving piece 18, the wedge 5 is prevented from falling when the workpiece W is removed, and the workpiece W
The attachment and detachment work can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a vice according to an embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the vice shown in FIG. 1, and FIG. 3 is a view taken along the ■-■ arrow in FIG. FIG. 4 is an enlarged partial view of FIG. 1... Base, 2... Guide surface, 3.4... End block, 5... Wedge, 7... Clamp block, 1o
... Guide groove, 13 ... Connection member, 15 ... Connection member, 17 ... Connection portion, 18 ... Spring receiving piece, 2
5... Bolt, 27... Spring, 35... Engagement surface,
36...Surface, 37...Engagement surface, 38...Surface,
39... Protrusion, 4o... Recess, 50... Serration part, 51... Serration part, 52... Scale, 53... Reference line

Claims (1)

[Claims] 1. A guide surface extending in the vertical direction is formed on a rod-shaped and block-shaped base, and a pair of end blocks are arranged with a workpiece installation space facing the guide surface sandwiched between the two end blocks. is provided with fixing means for fixing it to the base in a state where the distance between the two can be adjusted, and a wedge and a tightening mechanism for tightening the wedge toward the guide surface are provided between both end blocks so as to be movable in the vertical direction. The above-mentioned workpiece installation space is formed between the end block and the wedge, and a clamp block is arranged to be movable only in the vertical direction between the wedge and each workpiece installation space, and the opposite ends sandwich the workpiece installation space. A work engagement surface that engages with the work is formed on the surfaces of the block and the clamp block,
The wedge and the block adjacent thereto are provided with inclined surfaces that engage with each other to convert the tightening force of the tightening mechanism into a force toward the workpiece installation space and to be applied to the clamp block. A serration portion in which teeth are arranged in a vertical direction is provided, and among the end blocks, an end block that adjusts the position in the vertical direction is provided with teeth that mesh with the serration portion, and the end block provided with the teeth and the base. A vise characterized in that a mark is provided to indicate the relative vertical position of the two. 2. Form a guide surface extending in the vertical direction on a rod-shaped and block-shaped base, place a pair of end blocks across the work installation space facing the guide surface, and set both end blocks so that the distance between them is A fixing means for fixing to the base in an adjustable manner is provided, a wedge and a tightening mechanism for tightening the wedge toward the guide surface are provided between both end blocks, and are movable in the longitudinal direction, and at least one of the end blocks and the wedge are provided. The above-mentioned workpiece installation space is formed between the wedge and each workpiece installation space, and a clamp block is arranged to be movable only in the vertical direction between the wedge and each workpiece installation space. A fitting portion is provided, and the wedge and the block adjacent thereto are provided with inclined surfaces that engage with each other to convert the tightening force of the tightening mechanism into a force toward the workpiece installation space and exert it on the clamp block. A vise characterized in that the hardness of the workpiece engaging portion is set to be lower than that of the inclined surface and to a degree that allows machining. 3. Form a guide surface extending in the vertical direction on a rod-shaped and block-shaped base, place a pair of end blocks across the work installation space facing the guide surface, and set both end blocks so that the distance between them is A fixing means for fixing to the base in an adjustable manner is provided, a wedge and a tightening mechanism for tightening the wedge toward the guide surface are provided between both end blocks, and are movable in the longitudinal direction, and at least one of the end blocks and the wedge are provided. A workpiece installation space is formed between the wedge and each workpiece installation space, and a clamp block is arranged so as to be movable only in the vertical direction between the wedge and each workpiece installation space. , forming a work engagement surface that engages with the work, and causing the wedge and the block adjacent thereto to engage with each other to convert the tightening force of the tightening mechanism into a force toward the work installation space to form a clamp block. providing a sloped surface for the clamping member to exert pressure on the base, a groove extending in the longitudinal direction and opening into the support surface, and a portion of the clamp block being inserted into the groove;
A vice characterized in that a spring receiving piece is fixed in the groove in a state where the vertical position can be adjusted, and a spring that biases the clamp block toward the wedge is supported by the spring receiving piece.