CN112548884A

CN112548884A - Self-centering vice

Info

Publication number: CN112548884A
Application number: CN202110043379.4A
Authority: CN
Inventors: 周雪丰
Original assignee: Xufeng Tianjin Electronic Equipment Co ltd
Current assignee: Xufeng Tianjin Electronic Equipment Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-03-26

Abstract

The invention discloses a self-centering vice, which belongs to machining positioning equipment and comprises a base, two vice bodies, a screw rod, a fixed seat, a locking nut and a plurality of pressure bearings, wherein: the two clamp bodies are movably arranged on the base, the clamp bodies can be driven to move centripetally or centrifugally by rotating the lead screw, a novel mounting ring table is arranged in the middle of the lead screw, the mounting ring table is arranged between the pressure bearings, and the locking nuts are integrally arranged in the fixed seats. Compared with the existing structure, the self-centering vice provided by the invention adopts a novel positioning and locking installation structure, can automatically position the center of a workpiece, has the repeated positioning precision of 0.002mm or more, and is provided with a clamping piece with a wider clamping surface, high clamping reliability and stability and strong adaptability.

Description

Self-centering vice

Technical Field

The invention belongs to machining positioning equipment, and particularly relates to a self-centering vice.

Background

In the field of machining, a vice is a common fixture and comprises a base and two clamp bodies, wherein one clamp body is fixed on the base, and the other clamp body freely slides on the base. When a workpiece is clamped, the movable clamp body moves towards the fixed clamp body, so that one surface of the workpiece is tightly attached to the fixed clamp body.

The existing vice generally uses one edge of a workpiece as a processing reference, and when the processing technology uses the center of the workpiece as the reference, the manual operation alignment is needed, so that the processing preparation time is prolonged, the operation is inconvenient, and the production efficiency is reduced. Simultaneously, current vice positioning accuracy is relatively poor, can appear accumulative error long-time to work piece equipment with add man-hour, leads to later can appear the error to work piece equipment processing, influences work piece equipment machining precision, has iron fillings and other foreign matters to get into from the gap of casing in addition in the use, causes pollution or damages the screw thread to the lead screw, influences the lead screw and rotates.

Disclosure of Invention

Aiming at the technical problems, the invention provides a self-centering vice, which adopts a novel positioning and locking installation structure, can automatically position the center of a workpiece, has the repeated positioning precision of 0.002mm or more, and is provided with a clamping piece with a wider clamping surface, high clamping reliability and stability and strong adaptability.

The invention solves the problems through the following technical means:

the utility model provides a from centering vice, its characterized in that, includes base, the pincers body, lead screw, fixing base, lock nut and pressure bearing, wherein: the base is a bearing carrier and is used for mounting the clamp body and the fixed seat; the number of the clamp bodies is two, and the two clamp bodies are movably arranged on the base; the screw rod is a positive and negative screw thread screw rod, two ends of the screw rod are respectively connected with the clamp bodies at two ends through the positive screw thread and the negative screw thread, and the middle part of the screw rod is sleeved with a locking nut and a pressure bearing; the locking nut is used for rotatably installing the pressure bearing and the lead screw in the fixed seat.

Preferably, the middle part of the base is provided with an elongated slot, two sides of the base are provided with sliding grooves, the top of the elongated slot is provided with a dust guard, and the middle part of the elongated slot is provided with a mounting groove for mounting the fixing seat.

Preferably, the pincers body includes holder, locating piece, removal seat and stopper, wherein: the top of the clamping piece is provided with a clamping row of teeth, and the bottom of the clamping piece is provided with a positioning groove matched with the positioning block in shape; the top of the moving seat is provided with a connecting groove matched with the shape of the positioning block, the positioning block is used for connecting the positioning groove and the connecting groove, sliding blocks matched with the shape of the sliding groove are arranged on two sides of the bottom of the moving seat, the center of the bottom of the moving seat is provided with a limiting block matched with the shape of the long groove, and the limiting block is provided with a thread hole.

Preferably, one end of the screw rod is provided with a forward thread, the other end of the screw rod is provided with a backward thread, the tail end of the screw rod is provided with a starting head, and the middle of the screw rod protrudes to form an installation ring platform.

Preferably, the starting head is a right multi-corner.

Preferably, the middle part of fixing base is seted up the fixed chamber that installation pressure bearing and installation ring platform were used, and one side of fixing base is provided with the opening, the opening part is provided with the fastening screw, installs fastening screw in order to realize the internal diameter of fixed chamber and adjusts in the fastening screw, and the one end of fixed chamber is provided with the step hole that restriction pressure bearing moved and uses, and the other end of fixed chamber is provided with the installation screw thread that cooperation lock nut connected.

The self-centering vice has the following beneficial effects:

1) the rotary screw rod drives the clamp bodies to move towards the center or two sides simultaneously, so that a workpiece is clamped or loosened, the two clamp bodies can move, and the workpiece can be clamped quickly.

2) The invention adopts a novel positioning and locking installation structure, two pressure bearings are clamped on two sides of the middle installation ring platform of the screw rod and are installed on the fixed seat through the locking nut, so that the center of a workpiece can be automatically positioned, and the repeated positioning precision can reach 0.002mm or more.

3) The clamping piece configured by the vice has a wider clamping surface, the two sides of the clamping surface are both provided with the row of teeth, and the vice is high in clamping reliability and stability and strong in adaptability.

4) The dustproof plate is arranged on the base, so that the interior of the base can be sealed, and dust or foreign matters can be prevented from entering a gap.

5) The clamp body of the invention adopts a modular structure, and is convenient to disassemble, assemble, maintain and replace.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic layout of the base of the present invention;

FIG. 3 is a schematic view of the structure of the pliers body of the present invention;

FIG. 4 is a schematic view of the positioning block of the present invention installed;

FIG. 5 is a schematic view of a lead screw according to the present invention;

FIG. 6 is a first schematic view of the lock nut and pressure bearing installation position of the present invention;

FIG. 7 is a second schematic view of the lock nut and pressure bearing mounting location of the present invention;

FIG. 8 is a schematic view of the fixing base of the present invention;

fig. 9 is a schematic view of the mounting bracket of the present invention.

The clamp comprises a base 1, a base 101, an elongated slot 101, a sliding slot 102, a dustproof plate 103, a mounting slot 104, a clamp body 2, a clamping piece 201, a positioning block 202, a movable seat 203, a sliding block 204, a thread hole 205, a lead screw 3, a positive thread 301, a negative thread 302, a starting head 303, a mounting ring platform 304, a fixed seat 4, a fixed cavity 401, an opening 402, a fastening screw hole 403, a stepped hole 404, a mounting thread 405, a locking nut 5 and a pressure bearing 6.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 9, the self-centering vise comprises a base 1, a vise body 2, a lead screw 3, a fixing seat 4, a lock nut 5, and a pressure bearing 6, wherein: the base 1 is a load-bearing carrier and is used for installing the caliper body 2 and the fixing seat 4, in fig. 1, the middle of the base 1 is provided with a long groove 101, the two sides of the base 1 are provided with sliding grooves 102, in the embodiment, the sliding grooves 102 are of an L-shaped structure, the top of the long groove 101 is provided with a dust guard 103, the dust guard 103 is installed in a corresponding square groove, the upper surface of the dust guard is flush with the upper surface of the base 1, the front and back movement of the caliper body 2 is not affected, the dust guard is installed on the base, the internal sealing of the base can be realized, the gap dust or foreign matters are prevented from entering, and the middle of.

In fig. 1, the number of the forceps bodies 2 is two, and the two forceps bodies 2 are movably mounted on the base 1, specifically, as shown in fig. 3 and 4, the forceps bodies 2 include a clamping member 201, a positioning block 202, a moving seat 203 and a limiting block 204, wherein: the top of the clamping piece 201 is provided with a clamping row of teeth, the clamping row of teeth is contacted with a workpiece, and the bottom of the clamping piece 201 is provided with a positioning groove which is matched with the positioning block 202 in shape; the top of the movable seat 203 is provided with a connecting groove matched with the shape of the positioning block 202, the positioning block 202 is used for connecting the positioning groove and the connecting groove to ensure that the movable seat 203 and the clamping piece 201 are aligned front and back, the movable seat 203 and the clamping piece 201 are fixedly installed by using screws after being aligned, the two sides of the bottom of the movable seat 203 are provided with sliding blocks 204 matched with the shape of the sliding groove 102, the sliding blocks 204 and the bottom of the movable seat 203 are also installed by the screws, the center of the bottom of the movable seat 203 is provided with a limiting block matched with the shape of the long groove 101, and the limiting block is provided with a thread hole 205.

In the embodiment, the clamp bodies are of a modular structure, so that the clamp bodies are convenient to disassemble, assemble, maintain and replace, the screw rod is rotated to drive the clamp bodies to move towards the center or two sides simultaneously, a workpiece is clamped or loosened, the two clamp bodies can move, rapid clamping can be realized, the clamping piece is provided with a wide clamping surface, the two sides of the clamping surface are provided with the row teeth, and the clamping reliability, the stability and the adaptability are high.

As shown in fig. 5, 6 and 7, the screw rod 3 is a screw rod with positive and negative threads, two ends of the screw rod 3 are respectively connected with the caliper bodies 2 at two ends through the positive and negative threads, the middle part of the screw rod 3 is sleeved with a locking nut 5 and a pressure bearing 6, and the locking nut 5 is used for rotatably installing the pressure bearing 6 and the screw rod 3 in the fixing seat 4. Specifically, one end of the screw rod 3 is provided with a positive thread 301, the other end of the screw rod 3 is provided with a negative thread 302, the tail end of the screw rod 3 is provided with a starting head 303, the starting head 303 is a positive polygonal angle, the positive polygonal angle can be a positive four-corner angle, a positive six-corner angle and the like, the middle part of the screw rod 3 protrudes to form a mounting ring platform 304, and the mounting ring platform 304 is of a circular ring structure, is milled from the middle part of the screw rod 3, and can also be welded and mounted.

In the embodiment, the novel positioning and locking mounting structure is adopted, the two pressure bearings are clamped on the two sides of the middle mounting ring table of the screw rod and are mounted on the fixing seat through the locking nuts, the center of a workpiece can be automatically positioned, and the repeated positioning accuracy can reach 0.002mm or more.

As shown in fig. 8 and 9, the fixing base 4 is a C-shaped opening structure, a fixing cavity 401 for mounting the pressure bearing 6 and the mounting ring 304 is formed in the middle of the fixing base 4, an opening 402 is formed in one side of the fixing base 4, a fastening screw hole 403 is formed in the opening 402, a fastening screw is mounted in the fastening screw hole 403 to adjust the inner diameter of the fixing cavity 401, a stepped hole 404 for limiting the movement of the pressure bearing 6 is formed in one end of the fixing cavity 401, and a mounting thread 405 connected by the locking nut 5 is formed in the other end of the fixing cavity 401.

During specific installation, firstly, two pressure bearings are sleeved on two sides of the middle installation ring platform of the screw rod, secondly, a locking nut is sleeved on the other side of the screw rod, then, the locking nut is integrally installed in the fixing cavity 401 of the fixing seat 4, the locking nut is screwed up at the moment, the outer wall of the locking nut is connected with the installation thread 405, and the inner hole of the locking nut is in contact with the shaft shoulder of the screw rod to realize integral positioning. Finally, a fastening screw is installed in the fastening screw hole 403 to reduce the inner diameter of the fixing cavity 401, so as to further lock the fixing seat 4, and prevent the screw rod 3 from moving, thereby realizing higher positioning accuracy.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a self-centering vice, its characterized in that includes base (1), the pincers body (2), lead screw (3), fixing base (4), lock nut (5) and pressure bearing (6), wherein:

the base (1) is a bearing carrier and is used for mounting the clamp body (2) and the fixed seat (4);

the number of the clamp bodies (2) is two, and the two clamp bodies (2) are movably arranged on the base (1);

the lead screw (3) is a lead screw with positive and negative threads, two ends of the lead screw (3) are respectively connected with the clamp bodies (2) at two ends through the positive threads and the negative threads, and the middle part of the lead screw (3) is sleeved with a locking nut (5) and a pressure bearing (6);

the locking nut (5) is used for rotatably installing the pressure bearing (6) and the lead screw (3) in the fixed seat (4).

2. The self-centering vice as claimed in claim 1, wherein the base (1) has a middle portion formed with an elongated slot (101), the base (1) has two sides formed with sliding slots (102), a dust guard (103) is mounted on the top of the elongated slot (101), and the elongated slot (101) has a middle portion formed with an installation slot (104) for installing the fixing seat (4).

3. The self-centering vise according to claim 1, wherein the vise body (2) comprises a clamping member (201), a positioning block (202), a moving seat (203) and a stop block (204), wherein: the top of the clamping piece (201) is provided with clamping row teeth, and the bottom of the clamping piece (201) is provided with a positioning groove which is matched with the positioning block (202) in shape; the top of the movable seat (203) is provided with a connecting groove which is matched with the positioning block (202) in shape, the positioning block (202) is used for connecting the positioning groove and the connecting groove, two sides of the bottom of the movable seat (203) are provided with sliding blocks (204) which are matched with the sliding groove (102) in shape, the center of the bottom of the movable seat (203) is provided with a limiting block which is matched with the elongated groove (101) in shape, and the limiting block is provided with a thread hole (205).

4. The self-centering vice as claimed in claim 1, wherein one end of the screw rod (3) is provided with a positive thread (301), the other end of the screw rod (3) is provided with a negative thread (302), the end of the screw rod (3) is provided with a starting head (303), and the middle of the screw rod (3) protrudes to form a mounting ring platform (304).

5. The self-centering vise of claim 4, wherein the starting head (303) is a right multi-corner.

6. The self-centering vice as claimed in claim 1, wherein a fixing cavity (401) for installing the pressure bearing (6) and the annular table (304) is formed in the middle of the fixing base (4), an opening (402) is formed in one side of the fixing base (4), a fastening screw hole (403) is formed in the opening (402), a fastening screw is installed in the fastening screw hole (403) to adjust the inner diameter of the fixing cavity (401), a stepped hole (404) for limiting the movement of the pressure bearing (6) is formed in one end of the fixing cavity (401), and a mounting thread (405) which is matched with the locking nut (5) to connect is formed in the other end of the fixing cavity (401).