CN213970714U

CN213970714U - Precision self-centering vice

Info

Publication number: CN213970714U
Application number: CN202022720551.9U
Authority: CN
Inventors: 谢先能; 王大专
Original assignee: Shenzhen Aoshun Precision Technology Co ltd
Current assignee: Shenzhen Dingwei Precision Technology Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-08-17
Anticipated expiration: 2030-11-20

Abstract

The utility model relates to a precise self-centering vice, which comprises a base, wherein the base is provided with a chute which is divided into a left chute and a right chute by an intermediate wall; a transverse through hole is arranged on the middle wall, and a left side wall through hole and a right side wall through hole which are on the same axial lead with the transverse through hole are correspondingly arranged on the left chute and the right chute; the base is pivoted with a screw rod, two sides of which are respectively provided with a positive rotating thread and a negative rotating thread; the lead screw is provided with a left slide block and a right slide block in a sliding manner, the left slide block and the right slide block are provided with a plurality of strip-shaped transverse bulges which are arranged in parallel at intervals and have the same quantity on the opposite surfaces, the heights of the plurality of transverse bulges are the same, a transverse Y-shaped groove is arranged between every two adjacent transverse bulges, a vertical Y-shaped groove is arranged in the middle of each transverse bulge, and the centers of the plurality of vertical Y-shaped grooves are positioned on the same axis. The utility model discloses a simple structure, the equipment of easy production facilitates the use, and stability is good, operates safelyr, can not cause the damage to the processing product.

Description

Precision self-centering vice

Technical Field

The utility model relates to a frock clamp, especially an accurate self-centering vice.

Background

The vice is a universal fixture used for clamping workpieces, is arranged on a workbench and is used for clamping stably machined workpieces and is a necessary tool for a vice workshop. However, the existing vice has a complex structure, is difficult to process and produce, is unstable in positioning, low in precision and difficult to operate in the positioning of a clamping center, and is easy to damage a clamped product.

SUMMERY OF THE UTILITY MODEL

To the current not enough, the utility model provides an accurate self-centering vice.

The utility model provides a technical scheme that its technical problem adopted is: a precise self-centering vice comprises a base, wherein a sliding chute is arranged on the base, and a middle wall which divides the sliding chute into a left sliding chute and a right sliding chute extends from the middle part of the sliding chute; a transverse through hole is formed in the middle wall, a left side wall through hole is formed in the left side wall of the left sliding chute, and a right side wall through hole is formed in the right side wall of the right sliding chute; the left side wall through hole and the right side wall through hole are on the same axis with the transverse through hole; the base is pivoted with a screw rod, two sides of the screw rod are respectively provided with a positive rotating thread and a negative rotating thread, the screw rod passes through the transverse through hole to rotate in the sliding groove, and the left end of the screw rod is inserted into the through hole of the left side wall, and the right end of the screw rod is inserted into the through hole of the right side wall; the lead screw is provided with a left sliding block corresponding to the left sliding groove and a right sliding block corresponding to the right sliding groove in a sliding manner, the opposite surfaces of the left sliding block and the right sliding block are respectively provided with a plurality of strip-shaped transverse bulges which are arranged in parallel at intervals and have plane end surfaces, the heights of the transverse bulges are the same, a transverse Y-shaped groove is arranged between every two adjacent transverse bulges, the middle part of each transverse bulge is provided with a vertical Y-shaped groove, and the centers of the plurality of vertical Y-shaped grooves are positioned on the same axis; the number of the transverse bulges arranged on the left sliding block and the right sliding block is the same, and the heights of the corresponding transverse bulges in the vertical direction are the same.

Preferably, the intermediate wall is further provided with a vertical through hole perpendicular to the transverse through hole, an upper clamping block and a lower clamping block are arranged in the vertical through hole, the center of the screw is provided with a clamping groove corresponding to the vertical through hole and surrounding the screw, and the upper clamping block and the lower clamping block are clamped in the clamping groove, connected and sleeved on the screw.

Preferably, the left slider and the right slider both comprise an upper slider and a lower slider, the lower slider is slidably arranged on the lead screw and detachably connected with the upper slider, and the transverse protrusion is arranged on the upper slider.

Preferably, the left slider and the right slider are both provided with an arc-shaped groove with an arc-shaped cross section at the joint of the transverse projection at the top and the slider.

Preferably, the left slider and the right slider are provided with two transverse protrusions.

Preferably, both ends of the screw rod are provided with hexagonal nuts integrally formed with the screw rod.

Preferably, the sliding groove is a strip-shaped hole penetrating through the upper surface and the lower surface of the base.

The beneficial effects of the utility model reside in that: the utility model discloses a structure is also simple, the equipment of easy production, the slider of establishing on it is given for sliding through the rotation transmission of lead screw, make the slider slide along the spout on the lead screw, the lead screw can not be toward moving outward outstanding, the operation is safer, the positive and negative rotation screw thread of lead screw makes about the slider can press from both sides the action of pressing from both sides tight or loosening simultaneously, arch and Y type groove on the slider can be better press from both sides the work piece tightly and fix a position, the locking dynamics is big, good stability, the precision is high, can not cause the damage to the product that presss from both sides tightly, and the clamping is simple swift, and convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an upper slider according to an embodiment of the present invention;

part names and serial numbers in the figure: 1-a base 10-a left chute 11-a right chute 12-a middle wall 100-a left side wall through hole 110-a right side wall through hole 120-a transverse through hole 121-a vertical through hole 2-a screw rod 20-a clamping groove 21-a hexagonal nut 3-a left slider 30-an upper slider 31-a lower slider 4-a right slider 5-a transverse protrusion 50-a transverse Y-shaped groove 51-a vertical Y-shaped groove 52-an arc-shaped groove 6-an upper clamping block 7-a lower clamping block.

Detailed Description

To clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are clearly and completely described below. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the utility model is as shown in fig. 1-4, a precision self-center vice, including base 1, this base 1 is used for installing on the workstation, according to different production demands, can be with its fixed mounting on the workstation, also can install it on the workstation with dismantled and assembled mode, install it on the workstation when needs use, then can dismantle when not using, can not occupy the workstation, can also install its removal on different workstations, be convenient for people's use, be provided with a spout on base 1 and extend in the middle part of spout and have the intermediate wall 12 that separates the spout into left spout 10 and right spout 11, that is the spout becomes the style of Chinese character ri, intermediate wall 12 and base 1 integrated into one piece, intermediate wall 12 just divides the spout into two, it has just acted as the right side wall of left spout 10, the left side wall of right spout 11; a transverse through hole 120 is formed in the middle wall 12, a left side wall through hole 100 is formed in the left side wall of the left chute 10, and a right side wall through hole 110 is formed in the right side wall of the right chute 11, that is, through holes are formed in both side walls of the left and right chutes and are communicated with each other through the transverse through hole 120; the left side wall through hole 100 and the right side wall through hole 110 are on the same axis with the transverse through hole 120, which means that the three through holes are on the same axis, so that the lead screw 2 installed in the three through holes cannot deviate in rotation, and further, the sliding direction of the sliding block on the lead screw 2 cannot deviate, and the clamping and positioning are more accurate and stable; the base 1 is pivoted with a screw rod 2 with positive and negative rotation threads on two sides respectively, so that the sliding blocks on two sides of the screw rod 2 can form clamping or loosening action in the rotation of the screw rod 2, the lead screw 2 passes through the transverse through hole 120 to rotate in the sliding chute, the left end of the lead screw 2 is inserted into the left side wall through hole 100, the right end of the lead screw is inserted into the right side wall through hole 110, the lead screw 2 is limited in the three through holes, the stability of the rotation of the lead screw 2 is ensured, no offset is generated, the rotation of the screw rod 2 can be adjusted at the left end or the right end, the use is convenient, the hexagonal nuts 21 which are integrally formed with the screw rod 2 are arranged at the two ends of the screw rod 2, a matched tool corresponding to the hexagonal nut 21 is used when the screw rod 2 is adjusted to rotate, when the hexagonal nut 21 is an inner hexagonal nut, a hexagon wrench is used, and when the hexagon wrench is an outer hexagon nut, an inner hexagon socket wrench is used; the screw rod 2 is provided with a left slide block 3 corresponding to the left chute 10 and a right slide block 4 corresponding to the right chute 11 in a sliding manner, the left slide block 3 slides in the left chute 10, the right slide block 4 slides in the right chute 11, and the two slide blocks simultaneously slide to the middle wall 12 to clamp and position a workpiece; the right slider 4 is provided with a counter-rotating internal thread corresponding to the right side, and the screw rod 2 slides to or away from the middle wall 12 in the rotation process, namely the screw rod clamps or releases the screw rod; meanwhile, the left and right sliders are simultaneously clamped or loosened in the rotation of the lead screw 2. At the moment, the screw rod 2 rotates, the left and right sliding blocks are driven by the screw rod to do linear motion on the screw rod 2, namely slide along the sliding groove, so that the sliding blocks can be conveniently disassembled and assembled, the sliding groove is a strip-shaped hole penetrating through the upper surface and the lower surface of the base, the sliding blocks can be conveniently disassembled and assembled through the bottom surface of the strip-shaped hole, the production and the assembly are convenient, the use is convenient, the left sliding block 3 and the right sliding block 4 are respectively provided with a plurality of strip-shaped transverse bulges 5 with end surfaces being planes which are arranged in parallel at intervals on opposite surfaces, the heights of the plurality of transverse bulges 5 are the same, a transverse Y-shaped groove 50 is arranged between every two adjacent transverse bulges 5, the plurality of transverse bulges 5 can be used for clamping workpieces with different sizes, a plurality of clamping stress points can be formed when the workpieces are clamped, preferably, two transverse bulges 5 on the left sliding block 3 and the right sliding block 4 are respectively provided, the clamping is more stable, the end face is a plane and a strip structure thereof, the force applied to the workpiece when the workpiece is clamped is the transmission of the force between a plurality of faces, the locking force during the clamping is larger, the stability is better, the problem that the locking force is insufficient due to the traditional single large-area contact clamping is avoided, and the problem that the clamped workpiece is damaged easily due to the over-concentrated force caused by the traditional line contact or point contact is also avoided, the center positioning can be automatically formed when the workpiece is clamped between two Y-shaped grooves, the positioning is accurate, the complex adjusting process is not needed, as the force action is mutual, when a large force is applied to the clamped workpiece, the corresponding reaction force can act on the transverse bulge, and the transverse Y-shaped groove 50 can buffer the action force while positioning, so that the clamping is tighter, the precision is higher and can not damage the work piece, every the middle part of horizontal arch 5 all is provided with vertical Y type groove 51, and the center of a plurality of vertical Y type grooves 51 is in same axis, and vertical Y type groove 51 also can be used for the work piece of centre gripping location vertical direction in the same way, with the work piece centre gripping in Y type groove, the both sides wall in Y type groove just forms the location with the circular component is tangent to press from both sides the work piece fixed clamp. The left sliding block 3 and the right sliding block 4 are provided with the same number of transverse protrusions 5, and the corresponding transverse protrusions 5 are same in height in the vertical direction, so that the left sliding block and the right sliding block are same in shape and structure, and the force applied to the workpiece is also corresponding when the workpiece is clamped, and the workpiece can be clamped and positioned accurately and stably.

In a further improvement, as shown in fig. 2 and 3, a vertical through hole 121 perpendicular to the horizontal through hole 120 is further provided on the intermediate wall 12, an upper fixture block 6 and a lower fixture block 7 are provided in the vertical through hole 121, a clamping groove 20 corresponding to a circumference of the screw rod 2 of the vertical through hole 121 is provided at the center of the screw rod 2, the upper fixture block 6 and the lower fixture block 7 are clamped in the clamping groove 20 and connected to and sleeved on the screw rod 2, the screw rod 2 passes through the horizontal through hole 120, the clamping groove 20 is provided at the center thereof and surrounds the screw rod 2 by a circumference, the upper fixture block and the lower fixture block are correspondingly clamped in the clamping groove 20, the upper fixture block and the lower fixture block are connected to surround the screw rod 2, the center of the screw rod 2 is positioned, the machining position is the center position of the workpiece no matter in which direction the clamping is performed, and the clamping and loosening actions are synchronous actions, so that the clamping or loosening can be performed quickly, the workpiece is more convenient and time-saving when being clamped, and the processing is more accurate.

In a further improvement, as shown in fig. 2, the left slider 3 and the right slider 4 both include an upper slider 30 and a lower slider 31, the lower slider 31 is slidably disposed on the lead screw 2 and detachably connected to the upper slider 30, the lateral protrusion 5 is disposed on the upper slider, that is, the left slider 3 includes the upper slider 30 and the lower slider 31, the right slider 4 also includes the upper slider 30 and the lower slider 31, the upper and lower sliders of the left and right sliders can be of the same structure, which facilitates production and clamping positioning, or of different structures, which can be used for clamping and positioning of a special-shaped workpiece, at this time, the lower slider 31 is linearly moved under the transmission of the lead screw 2 to drive the upper slider 30 to slide, the upper slider 30 is used as a main force-bearing part for clamping the workpiece, and is easily damaged when the workpiece is disassembled or disassembled, so that when the upper slider 30 is damaged or fails, can both convenient and fast maintain it and change, facilitate the use, can also change upper portion slider 30 according to the size of the centre gripping work piece of will simultaneously, make it can adapt to the size of the centre gripping work piece of will, it is more convenient to use.

Further improvement, as shown in fig. 1, 2 and 4, the left slider 3 and the right slider 4 are both provided with an arc-shaped groove 52 with an arc-shaped cross section at the joint of the uppermost transverse protrusion 5 and the slider, so that the workpiece can apply a reaction force to the slider in the process of clamping the workpiece, the uppermost transverse protrusion 5 has no stress supporting point and is easy to damage after being stressed, and the reaction force applied to the transverse protrusion 5 can be buffered through the arc-shaped groove 52 to avoid damage.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. The utility model provides a precision is from center vice which characterized in that: the device comprises a base, wherein a sliding chute is arranged on the base, and a middle wall which divides the sliding chute into a left sliding chute and a right sliding chute extends from the middle part of the sliding chute; a transverse through hole is formed in the middle wall, a left side wall through hole is formed in the left side wall of the left sliding chute, and a right side wall through hole is formed in the right side wall of the right sliding chute; the left side wall through hole and the right side wall through hole are on the same axis with the transverse through hole; the base is pivoted with a screw rod, two sides of the screw rod are respectively provided with a positive rotating thread and a negative rotating thread, the screw rod passes through the transverse through hole to rotate in the sliding groove, and the left end of the screw rod is inserted into the through hole of the left side wall, and the right end of the screw rod is inserted into the through hole of the right side wall; the lead screw is provided with a left sliding block corresponding to the left sliding groove and a right sliding block corresponding to the right sliding groove in a sliding manner, the opposite surfaces of the left sliding block and the right sliding block are respectively provided with a plurality of strip-shaped transverse bulges which are arranged in parallel at intervals and have plane end surfaces, the heights of the transverse bulges are the same, a transverse Y-shaped groove is arranged between every two adjacent transverse bulges, the middle part of each transverse bulge is provided with a vertical Y-shaped groove, and the centers of the plurality of vertical Y-shaped grooves are positioned on the same axis; the number of the transverse bulges arranged on the left sliding block and the right sliding block is the same, and the heights of the corresponding transverse bulges in the vertical direction are the same.

2. The precision self-centering vice as claimed in claim 1, wherein the intermediate wall is further provided with a vertical through hole perpendicular to the horizontal through hole, an upper fixture block and a lower fixture block are arranged in the vertical through hole, the center of the screw rod is provided with a clamping groove corresponding to the vertical through hole and surrounding the screw rod, and the upper fixture block and the lower fixture block are clamped in the clamping groove and connected to each other and sleeved on the screw rod.

3. The precision self-centering vise of claim 1, wherein the left slider and the right slider each comprise an upper slider and a lower slider, the lower slider is slidably disposed on the lead screw and detachably connected to the upper slider, and the lateral protrusion is disposed on the upper slider.

4. The precision self-centering vice as claimed in claim 1, wherein the left and right sliders are each provided with an arc-shaped groove having an arc-shaped cross section at the joint of the uppermost lateral protrusion and the slider.

5. The precision self-centering vise of claim 1, wherein there are two lateral protrusions on each of the left and right slides.

6. The precision self-centering vise of claim 1, wherein the lead screw has hexagonal nuts formed integrally at both ends thereof.

7. The precision self-centering vise of claim 1, wherein the sliding groove is a strip-shaped hole penetrating the upper and lower surfaces of the base.