Center vice

Abstract

This invention relates to a center vice. 【Solution means】 A base 10 including a slide groove extending in a first direction and a first abutting portion, a clamping assembly 20 including a first jaw portion and a second jaw portion that are relatively movable along the first direction, and the slide groove are provided with one screw 31, one positioning member and two adjusting members. The screw includes a first threaded section, a second threaded section and a positioning section. The first jaw portion and the second jaw portion are respectively connected to the first threaded section and the second threaded section. The positioning member is non-movably connected relative to the positioning section and is sandwiched between the two adjusting members. An adjusting assembly 30 is provided with a second abutting portion that abuts against the first abutting portion on each of the two adjusting members. At least a part of the two adjusting members can move along a second direction perpendicular to the first direction with respect to the base, and can press against the positioning member to move along the first direction.

Description

Technical Field

[0001] The present invention relates to a vise, and more particularly to a center vise.

Background Art

[0002] When machining a workpiece, in order to avoid the workpiece moving during machining and affecting the machining accuracy, usually a vise is used to clamp the workpiece to achieve a positioning effect and facilitate machining. For example, a center vise is often used in a five-axis machining center. A conventional center vise includes a main body and a screw positioned on the main body. Two movable bases are screwed onto the screw, and a clamp arm is connected to each movable base. Thus, when the two movable bases move relative to the screw, the two clamp arms stably clamp the workpiece.

[0003] However, since the screw of the conventional center vise is fixedly connected to the main body, fine adjustment cannot be performed so that the clamping centers of the two clamp arms exactly correspond to the axis of the five-axis machining center. As a result, the machining accuracy is low. Even if a center adjustment mechanism is provided in the center vise, there are problems such as a complex structure, which makes manufacturing and adjustment troublesome, and there are deficiencies that need to be solved.

[0004] Therefore, in order to solve the above problems, it is necessary to provide a center vise having novelty and progressiveness.

Summary of the Invention

[0005] The main object of the present invention is to provide a center vise for adjusting the center position in order to improve the machining accuracy.

[0006] To achieve the above object, the present invention provides a center vice, comprising: a base which is a center vice and includes a slide groove extending in a first direction and a first abutting portion; a clamping assembly including a first jaw portion and a second jaw portion which are relatively movable along the first direction; an adjustment assembly provided in the slide groove and including one screw, one positioning member and two adjusting members, wherein the screw includes a first threaded section, a second threaded section and a positioning portion, the first jaw portion and the second jaw portion are respectively connected to the first threaded section and the second threaded section, the positioning member is connected to the positioning portion in a relatively non-movable manner and is sandwiched between the two adjusting members, and a second abutting portion which abuts against the first abutting portion is provided on each of the two adjusting members; at least a part of the two adjusting members moves along a second direction perpendicular to the first direction with respect to the base, and presses against the positioning member to move along the first direction.

Brief Description of the Drawings

[0007]

Figure 1

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Figure 6

Embodiments for Carrying out the Invention

[0008] Hereinafter, possible embodiments of the present invention will be described by way of examples, but the protection scope of the present invention is not limited by these examples.

[0009] Referring to FIGS. 1 to 6, one preferred embodiment of the present invention is shown. The center vice 1 according to the present invention includes a base 10, a clamping assembly 20, and an adjustment assembly 30.

[0010] The base 10 includes a slide groove 11 extending in a first direction D1 and a first abutting portion 12. The clamping assembly 20 includes a first jaw portion 21 and a second jaw portion 22 that are relatively movable along the first direction D1. The adjustment assembly 30 is provided in the slide groove 11 and includes a screw 31, a positioning member 32, and two adjusting members 33. The screw 31 includes a first threaded section 311, a second threaded section 312, and a positioning section 313. The first jaw portion 21 and the second jaw portion 22 are respectively connected to the first threaded section 311 and the second threaded section 312. The positioning member 32 is non-movably connected to the positioning section 313 and is sandwiched between the two adjusting members 33. Each of the two adjusting members 33 is provided with a second abutting portion 331 that abuts against the first abutting portion 12. At least a part of the two adjusting members 33 moves along a second direction D2 perpendicular to the first direction D1 with respect to the base 10, presses against the positioning member 32, and moves along the first direction D1, and further adjusts the clamping center of the clamping assembly 20 to be aligned with the machining axis of the machining machine, so that the machining accuracy can be improved.

[0011] The adjustment assembly 30 further includes a first slide base 35 screwed to the first threaded section 311 and a second slide base 36 screwed to the second threaded section 312. The first slide base 35 and the second slide base 36 are slidably provided in the slide groove 11. The first jaw 21 and the second jaw 22 are removably connected to the first slide base 35 and the second slide base 36 respectively, and the first jaw 21 and the second jaw 22 may be replaced as needed to meet various processing needs. The first threaded section 311 and the second threaded section 312 have opposite helical directions, so that when the screw 31 rotates, the first jaw 21 and the second jaw 22 can be moved closer to or away from each other. Preferably, the base 10 is provided with at least one scale 16 corresponding to the first jaw 21 and the second jaw 22, thereby facilitating the adjustment of the distance between the first jaw 21 and the second jaw 22 and enabling accurate alignment to be performed.

[0012] The base 10 further includes a recess 13 recessed in the groove bottom of the slide groove 11, and the positioning member 32 and the two adjusting members 33 are received in the recess 13. Specifically, the first abutting portion 12 includes two inclined guide surfaces 121 that extend obliquely in the second direction D2. The two inclined guide surfaces 121 are located inside the circumferential direction of the recess 13 and face each other at an interval in the first direction D1. Thereby, the two adjusting members 33 can move stably along the two inclined guide surfaces 121. Referring to FIG. 4, the two inclined guide surfaces 121 are preferably parallel to each other, thereby maintaining an equal interval in the second direction D2. The two adjusting members 33 and the positioning member 32 stably abut adjacent to each other between the two inclined guide surfaces 121. The recess 13 includes a first portion 131 that houses the positioning member 32 and two second portions 132 that house the two adjusting members 33. In the second direction D2, the two second portions 132 gradually expand and extend in opposite directions. Thereby, the two adjusting members 33 are guided to slide stably in the two second portions 132 along the second direction D2. A long hole 133 is further provided on the bottom surface of the recess 13. A fastener 14 is inserted through the long hole 133 to removably connect the positioning member 32 and the base 10, thereby fixing the position of the positioning member 32 after adjustment and avoiding displacement.

[0013] Each adjusting member 33 includes a push block 332 provided on the second abutting portion 331 and a push rod 333 connected to the push block 332. The push rod 333 is connected to the base 10 in a position-adjustable manner. In this embodiment, two screw holes 15 communicating with the two second portions 132 are respectively formed through the base 10. Each push rod 333 is screwed into the screw hole 15, thereby facilitating fine adjustment and improving accuracy. Each push block 332 is a wedge block and can be pushed by the push rod 333. Each second abutting portion 331 is a side surface that extends obliquely along the second direction D2 of the wedge block, with a simple structure and excellent stability. Each second portion 132 gradually expands and extends toward the side where the screw hole 15 is provided, so that the first abutting portion 12 remains in contact with the contour of the second abutting portion 331 of each adjusting member 33. When the push rod 333 moves along a third direction D3 perpendicular to the first direction D1, the push rod 333 can move the push block 332 in the second direction D2, and the second direction D2 is oblique to the third direction D3. Thereby, the moving distance of the two adjusting members 33 is shortened, the pressing effect is good, and the structure is simple and the processing is easy. Specifically, each push block 332 is provided with an engaging groove 334 extending in the first direction D1, and the head portion 335 of each push rod 333 is press-fitted into the engaging groove 334 in the third direction D3. Thereby, when each push rod 333 is rotated and moves along the third direction D3, the head portion 335 moves in the engaging groove 334 along the first direction D1 and can displace the push block 332. Each push rod 333 is provided with a constricted portion 336 and two abutting surfaces 337 located on both opposite sides of the constricted portion 336. The two abutting surfaces 337 can respectively abut the push block 332 against both opposite surfaces in the third direction D3, and by surely pushing and moving the push block 332, timely and smooth operation can be ensured.In other embodiments, each of the push blocks may be integrally connected to the push rod or may be positioned on the base by other means.

[0014] Preferably, the push rod 333 of each adjusting member 33 is provided obliquely with respect to the positioning member 32. The positioning member 32 is less likely to be distorted by receiving force evenly and has good stability. In the third direction D3, the width of each push block 332 is not less than 1 / 3 of the width of the positioning member 32, so that stable contact with each other is possible. In the third direction D3, the side walls of each push block 332 and the first portion 131 overlap at least partially, whereby the movable distance of the push block 332 is limited.

[0015] Referring to FIGS. 5 and 6, when attempting to adjust the position of the positioning member 32, the operator loosens the fastener 14 and moves one of the two adjusting members 33 to the side where the push rod 333 is provided to increase the movement space of the positioning member 32. Next, the other of the two adjusting members 33 is moved so that the positioning member 32 slides to a predetermined position along the first direction D1 and is tightened again. As an example, in this embodiment, if it is desired to move the positioning member 32 to the right, first, the adjusting member 33 located on the right side of the positioning member 32 is moved to the side where the push rod 333 is provided. Next, when the adjusting member 33 located on the left side of the positioning member 32 is moved to one side of the push rod 333, the positioning member 32 can be slid to the right. Subsequently, the adjusting member 33 located on the right side of the positioning member 32 can be moved to one side of the push rod 333 and tightened together again. As shown in FIG. 5, after the adjustment is completed, the positioning member 32 may be fixed with the fastener 14, and the same applies in the reverse case. According to the above configuration, the two adjusting members 33 can stably press against the positioning member 32, have good stability, are easy to adjust, and since the two adjusting members 33 are horizontally provided on the base 10, they are easy to process.

Explanation of Reference Numerals

[0016] 1 center vice 10 base 11 slide groove 12 first contact part 121 inclined guide surface 13 recess 131 first part 132 second part 133 long hole 14 fastener 15 screw hole 16 scale 20 clamping assembly 21 first jaw part 22 second jaw part 30 adjustment assembly 31 screw 311 first threaded section 312 second threaded section 313 positioning part 32 positioning member 33 adjusting member 331 second contact part 332 push block 333 push rod 334 engagement groove 335 head part 336 constriction part 337 contact surface 35 first slide base 36 second slide base D1 first direction D2 second direction D3 third direction

Claims

1. A center vice, a base including a slide groove extending in a first direction and a first contact portion; a clamping assembly including a first jaw and a second jaw relatively movable along the first direction; an adjustment assembly provided in the slide groove, the adjustment assembly including one screw, one positioning member and two adjustment members, the screw including a first threaded section, a second threaded section and a positioning portion, the first jaw portion and the second jaw portion being connected to the first threaded section and the second threaded section, respectively, the positioning member being connected to the positioning portion so as not to be movable relative to the first jaw portion, the adjustment assembly being sandwiched between the two adjustment members, the two adjustment members each being provided with a second abutment portion that abuts against the first abutment portion, A center vice in which at least a portion of the two adjustment members move relative to the base along a second direction perpendicular to the first direction, pressing against the positioning member to move it along the first direction.

2. 2. The center vice according to claim 1, wherein the base further includes a recess formed in a groove bottom of the slide groove, and the positioning member and the two adjustment members are housed in the recess.

3. 3. The center vice of claim 2, wherein the first abutment portion includes two inclined guide surfaces extending at an angle in the second direction, the two inclined guide surfaces being located circumferentially inward of the recess and facing each other with a gap in between in the first direction.

4. The center vice of claim 2, wherein the recess includes a first portion that accommodates the positioning member and two second portions that accommodate the two adjustment members, and in the second direction, the two second portions gradually expand and extend in opposite directions.

5. A center vice as described in any one of claims 1 to 4, wherein each of the adjustment members includes a push block provided with the second abutment portion and a push rod connected to the push block, the push rod being connected to the base in a position adjustable manner.

6. 6. The center vice according to claim 5, wherein each of the push blocks is a wedge block, and each of the second contact portions is a side surface of the wedge block that extends at an angle in the second direction.

7. 6. The center vice of claim 5, wherein the push rod of each of the adjustment members is disposed obliquely relative to the positioning member.

8. 6. The center vice of claim 5, wherein the push rod can move the push block in the second direction when the push rod moves along a third direction perpendicular to the first direction, the second direction being oblique to the third direction.

9. 9. The center vice according to claim 8, wherein each of the push blocks is provided with an engagement groove extending in the first direction, and the head portion of each of the push rods is interference-fitted into the engagement groove in the third direction.

10. the first contact portion includes two inclined guide surfaces extending at an angle in the second direction, the two inclined guide surfaces being located on the inner side in the circumferential direction of the recess, facing each other with a gap in between in the first direction, the two inclined guide surfaces being parallel to each other, a long hole is further provided on a bottom surface of the recess, a fastener is inserted into the long hole, and the positioning member and the base are detachably connected, Each of the adjustment members includes a push block provided with the second contact portion and a push rod connected to the push block, the push rod being connected to the base so as to be positionally adjustable; Each of the push blocks is a wedge block, and each of the second abutment portions is a side surface of the wedge block that extends obliquely in the second direction, When the push rod moves along a third direction perpendicular to the first direction, the push rod can move the push block along the second direction, the second direction being oblique to the third direction; Each of the push blocks is provided with an engagement groove extending in the first direction, and a head portion of each of the push rods is tightly fitted into the engagement groove in the third direction; Each of the push rods is provided with one constricted portion and two abutment surfaces located on opposing sides of the constricted portion, and the two abutment surfaces are capable of abutting the push block against opposing sides in the third direction, In the third direction, the width of each of the push blocks is equal to or greater than 1 / 3 of the width of the positioning member; The base has two screw holes extending therethrough, the screw holes respectively communicating with the two second portions, and the push rods are screwed into the screw holes; Each of the second portions extends gradually toward the side where the screw hole is provided, and the push rod of each of the adjustment members is obliquely provided with respect to the positioning member, the first threaded section and the second threaded section have opposite helical directions; the adjustment assembly further includes a first slide base threadedly engaged with the first threaded section and a second slide base threadedly engaged with the second threaded section, the first slide base and the second slide base being slidably disposed in the slide groove, the first jaw and the second jaw being removably connected to the first slide base and the second slide base, respectively; The center vice of claim 4 , wherein said base is provided with at least one graduation corresponding to said first jaw portion and said second jaw portion.

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