CN214445804U

CN214445804U - Workpiece clamping device

Info

Publication number: CN214445804U
Application number: CN202120456014.XU
Authority: CN
Inventors: 谢军; 李明; 杨赞波
Original assignee: Hunan Nonferrous Metals Vocational and Technical College
Current assignee: Hunan Nonferrous Metals Vocational and Technical College
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-10-22
Anticipated expiration: 2031-03-03

Abstract

The utility model provides a workpiece clamping device, which comprises a base, a pressure bar and a first screw rod; two support plates are arranged on two sides of the base, a rotating shaft is rotatably arranged between the two support plates, an ear seat is arranged in the middle of the rotating shaft, a sliding sleeve is hinged on the ear seat, the sliding sleeve is sleeved on the pressing rod and can slide along the pressing rod, a threaded sleeve is arranged at the first end of the pressing rod, a first screw rod is matched with the thread in the threaded sleeve, and the bottom end of the first screw rod is rotatably arranged in the shaft seat; the second end of the pressure rod is connected with a pressure head, and a limiting seat used for limiting the position of a workpiece is arranged on the base below the pressure head. The workpiece is horizontally pressed down through the first screw rod, the sliding sleeve is hinged to the rotatable rotating shaft, the pressing rod is pressed down to the fulcrum in an adaptive adjustment mode, when the pressing head preliminarily compresses the workpiece, the rotating shaft can be locked through the sliding sleeve to enable the device to form a lever taking the sliding sleeve connecting rotating shaft as the fulcrum, the workpiece can be further clamped when the first screw rod is rotated again, and the workpiece has a good loosening effect.

Description

Workpiece clamping device

Technical Field

The utility model relates to a frock clamp technical field, concretely relates to work piece clamping device.

Background

In the processing process of some pipe materials and bar materials, the pipe materials and the bar materials are usually required to be clamped and fixed for processing. In the prior art, a small-sized pipe or bar can be clamped by a vice, but when the pipe or bar with a larger size or a special shape is processed, the pipe or bar is difficult to fix by the vice.

SUMMERY OF THE UTILITY MODEL

The utility model provides a workpiece clamping device solves among the prior art and is difficult to the tight problem of clamp to the great bar of size or pipe material.

In order to solve the above problems, the utility model provides a workpiece clamping device, which comprises a base, a pressure rod and a first screw rod; two support plates are oppositely arranged on two sides of the base, a rotating shaft is rotatably arranged between the two support plates, second screw rods are respectively arranged at two ends of the rotating shaft, locking nuts are in threaded fit on the second screw rods, and the locking nuts are used for locking the rotating shaft on the support plates; an ear seat is arranged in the middle of the rotating shaft, a sliding sleeve is hinged to the ear seat, the sliding sleeve is sleeved on the pressing rod and can slide along the pressing rod, a threaded sleeve is arranged at the first end of the pressing rod, the first screw rod is matched with the threaded sleeve in an internal thread mode, the bottom end of the first screw rod is rotatably arranged in a shaft seat, and the shaft seat is fixed on the base; the second end of the pressure rod is connected with a pressure head, and a limiting seat used for limiting the position of a workpiece is arranged on the base below the pressure head; when the first screw rod rotates, the pressing rod can drive the pressing head to press the workpiece.

In a possible embodiment, the end face of the lock nut is uniformly provided with a plurality of pin holes around the circumference; the two support plates are respectively provided with a mounting hole for mounting the second screw rod, the second screw rod is rotatably arranged in the mounting hole, a plurality of through holes corresponding to the bolt holes are formed in the outer edge of the mounting hole along the circumferential direction of the mounting hole, and when the rotating shaft rotates to a set angle, the two locking nuts are respectively inserted into the corresponding bolt holes and the through holes through at least one pin shaft so as to limit the rotation of the rotating shaft.

In a possible embodiment, a sleeve is arranged on the second end of the pressure rod, a connecting rod is rotatably arranged in the sleeve, and the bottom end of the connecting rod is connected with the pressure head.

In one possible embodiment, the shape of the pressure head is an inverted V-shaped structure; when the workpiece is pressed, the inner side surface of the inverted V-shaped structure is abutted against the outer wall of the workpiece.

In a possible embodiment, the pressure head comprises an arc-shaped block with a circular arc-shaped cross section; when the workpiece is pressed, the inner arc surface of the arc surface block is abutted against the outer wall of the workpiece.

In a possible embodiment, a handle is arranged at the top end of the first screw rod, and a baffle is arranged at the bottom end of the first screw rod, and the baffle is limited in a cavity arranged in the shaft seat and can rotate along with the first screw rod.

The embodiment of the utility model provides a work piece clamping device pushes down the work piece through first screw rod control depression bar level, through articulating the slip cap and realize the depression bar and push down the self-adaptive control of fulcrum in rotatable pivot, when the pressure head tentatively compressed tightly the work piece moreover, accessible locking pivot makes the device form the lever that uses slip cap connection pivot department as the fulcrum, can further press from both sides tightly the work piece when rotating first screw rod again, has better relaxation effect to the work piece.

Drawings

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

Fig. 1 is a schematic perspective view of a workpiece clamping device according to an embodiment of the present invention;

fig. 2 is a schematic view of a three-dimensional structure of a base according to an embodiment of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of a rotating shaft according to an embodiment of the present invention;

fig. 4 is a front view of a lock nut according to an embodiment of the present invention;

fig. 5 is a schematic view of a three-dimensional structure of a first screw according to an embodiment of the present invention.

In the figure: 1. a base; 11. a base plate; 12. a support plate; 121. mounting holes; 122. a through hole; 13. a limiting seat; 2. a first screw; 21. a handle; 22. a baffle plate; 3. a pressure lever; 31. a threaded sleeve; 32. a sleeve; 4. a pressure head; 41. a rubber pad; 5. a sliding sleeve; 6. a rotating shaft; 61. a second screw; 62. a rod body; 63. an ear mount; 7. locking the nut; 8. a pin shaft; 81. a pin hole; 9. a shaft seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 5, the present embodiment provides a workpiece clamping device, which includes a base 1, and optionally, the base 1 includes a bottom plate 11, support plates 12 fixed to the middle portions of two sides of the bottom plate 11, and mounting holes 121 are provided at the same height position on the two support plates 12. A rotating shaft 6 is installed between the two support plates 12, two ends of the rotating shaft 6 are respectively fixed with a second screw 61, and optionally, the second screw 61 can be detachably fixed at two ends of the rod body 62.

In a possible embodiment, the second screws 61 are rotatably disposed in the mounting holes 121, the second screws 61 pass through the mounting holes 121 and extend partially to the outside of the mounting holes 121, and optionally, a lock nut 7 is threadedly engaged with each of the second screws 61. In a possible implementation, the rotation shaft 6 can be fastened between the two support plates 12 by tightening the lock nuts 7 at the two ends of the rotation shaft 6, so that the rotation shaft 6 stops rotating.

In another possible embodiment, a plurality of through holes 122 are uniformly provided around the circumference of the mounting hole 121 on the outer periphery thereof, and accordingly, a plurality of latch holes 81 are provided through the lock nut 7 on the end surface of the lock nut 7, the latch holes 81 being provided corresponding to the through holes 122. To further lock the shaft 6, the pin 8 can be inserted into the pin hole 81 of the lock nut 7 and the through hole 122 of the support plate 12, so as to lock the lock nut 7, thereby preventing the shaft 6 from further rotating.

Optionally, an ear seat 63 is provided in the middle of the rotating shaft 6, and a sliding sleeve 5 is hinged on the ear seat 63. Specifically, a lug corresponding to the lug seat 63 is provided on the slide bush 5, and the slide bush 5 is hinged to the lug seat 63 via the lug. The sliding sleeve 5 is sleeved on the pressure rod 3 and can slide along the pressure rod 3. That is, when the pressing rod 3 moves up and down, the sliding sleeve 5 is relied on as a fulcrum of the pressing.

In some embodiments, the first end of the pressing rod 3 is provided with a threaded sleeve 31, and the threaded sleeve 31 is threadedly engaged with the first screw 2. Optionally, a handle 21 is disposed at a top end of the first screw rod 2, the first screw rod 2 is rotated by the handle 21, and a baffle 22 is disposed at a bottom end of the first screw rod 2, the baffle 22 being defined in a cavity in the shaft seat 9. That is, the baffle 22 can limit the up-and-down movement of the first screw rod 2, and the first screw rod 2 can only rotate but can not move up and down by means of the limit of the shaft seat 9. Optionally, the axle seat 9 is fixed to the base plate 11.

Optionally, a sleeve 32 is arranged at the second end of the pressure rod 3, the axis of the sleeve 32 is vertically arranged, a connecting rod is arranged in the sleeve 32, a nut is arranged at the upper end of the connecting rod, and a pressure head 4 is arranged at the lower end of the connecting rod. The ram 4 is rotatable to press against the workpiece.

In a possible embodiment, a limiting seat 13 is disposed on the bottom plate 11, and a limiting groove is disposed on the limiting seat 13, optionally, the limiting groove extends along the length direction of the bar or tube, and the cross section of the limiting groove can be V-shaped or arc-shaped.

Alternatively, the indenter 4 is shaped as an inverted V-shaped structure, and referring to fig. 1, when the workpiece is pressed, the inner side of the inverted V-shaped structure abuts against the outer wall of the workpiece.

Optionally, the pressing head 4 includes an arc-shaped block having a circular arc-shaped cross section, and an inner arc surface of the arc-shaped block abuts against an outer wall of the workpiece when the workpiece is pressed.

Optionally, rubber is provided on the contact surface of the indenter 4 with the workpiece.

Illustratively, when the embodiment is used specifically, a bar material or a pipe material is firstly placed on the limiting seat 13 on the base 1, then the handle 21 is rotated to make the pressure lever 3 move downwards parallel to the bottom plate 11, and the position of the rotating shaft 6 and the sliding sleeve 5 is adjusted adaptively. When the pressure head 4 is in quick contact with the workpiece, the angle of the pressure head 4 is adjusted to enable the pressure head 4 to wrap the workpiece, and the handle 21 is rotated continuously to press down until the workpiece is preliminarily pressed. After the preliminary compression, the locking nuts 7 at the two ends of the rotating shaft 6 are rotated, so that the pin holes 81 of the locking nuts 7 correspond to the through holes 122 on the support plate 12 and are inserted into the pin shaft 8, and the rotating shaft 6 is locked. At this point, the handle 21 is rotated again, and the ram 4 will press the workpiece further. The pressing head 4 in this embodiment has a large pressing force on the workpiece and does not loosen.

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

Claims

1. A workpiece clamping device is characterized by comprising a base, a pressure lever and a first screw rod; two support plates are oppositely arranged on two sides of the base, a rotating shaft is rotatably arranged between the two support plates, second screw rods are respectively arranged at two ends of the rotating shaft, locking nuts are in threaded fit on the second screw rods, and the locking nuts are used for locking the rotating shaft on the support plates; an ear seat is arranged in the middle of the rotating shaft, a sliding sleeve is hinged to the ear seat, the sliding sleeve is sleeved on the pressing rod and can slide along the pressing rod, a threaded sleeve is arranged at the first end of the pressing rod, the first screw rod is matched with the threaded sleeve in an internal thread mode, the bottom end of the first screw rod is rotatably arranged in a shaft seat, and the shaft seat is fixed on the base; the second end of the pressure rod is connected with a pressure head, and a limiting seat used for limiting the position of a workpiece is arranged on the base below the pressure head; when the first screw rod rotates, the pressing rod can drive the pressing head to press the workpiece.

2. The workpiece clamping device as recited in claim 1, wherein a plurality of pin holes are uniformly arranged around a circumference of an end surface of the lock nut; the two support plates are respectively provided with a mounting hole for mounting the second screw rod, the second screw rod is rotatably arranged in the mounting hole, a plurality of through holes corresponding to the bolt holes are formed in the outer edge of the mounting hole along the circumferential direction of the mounting hole, and when the rotating shaft rotates to a set angle, the two locking nuts are respectively inserted into the corresponding bolt holes and the through holes through at least one pin shaft so as to limit the rotation of the rotating shaft.

3. The workpiece clamping device as recited in claim 1, wherein a sleeve is disposed on the second end of the pressing rod, a connecting rod is rotatably disposed in the sleeve, and the bottom end of the connecting rod is connected with the pressing head.

4. The workpiece clamping device as recited in claim 3, wherein the indenter is shaped in an inverted V-shaped configuration; when the workpiece is pressed, the inner side surface of the inverted V-shaped structure is abutted against the outer wall of the workpiece.

5. The workpiece clamping device as recited in claim 3, wherein the indenter comprises an arcuate block having an arcuate configuration in cross-section; when the workpiece is pressed, the inner arc surface of the arc surface block is abutted against the outer wall of the workpiece.

6. The workpiece clamping device as recited in claim 1, wherein a handle is disposed at a top end of said first screw, and a baffle is disposed at a bottom end of said first screw, said baffle being defined in a cavity disposed in said shaft seat and being rotatable with said first screw.