CN108381220B

CN108381220B - Adjustable mechanical fixture

Info

Publication number: CN108381220B
Application number: CN201810284768.4A
Authority: CN
Inventors: 杨立; 张新芳; 杰克斯马诺
Original assignee: Jiangsu Youheng Machinery Co ltd
Current assignee: JIANGSU YOUHENG MACHINERY Co.,Ltd.
Priority date: 2018-04-02
Filing date: 2018-04-02
Publication date: 2020-12-18
Anticipated expiration: 2038-04-02
Also published as: CN108381220A

Abstract

The invention relates to the technical field of clamp equipment, in particular to an adjustable mechanical clamp which comprises a bottom plate, wherein a V-shaped block is arranged on one side of the middle part of the upper end of the bottom plate, two sides of the upper end of the bottom plate are respectively provided with a protection plate, one end of a threaded rod penetrates through the protection plate and is connected with an adjusting ring, a second support rod, a first support rod and a pushing device are sequentially arranged on the upper end of the support plate, a moving rod is inserted in the middle of the second support rod, one side edge of a rotating plate is connected with a first connecting rod through a pin shaft, a second connecting rod is connected inside the U-shaped groove through a pin shaft, one end of the second connecting rod is rotatably connected with the first connecting rod, the other end of the second connecting rod is connected with a third connecting. The clamp has the advantages of wider application range, simple structure, manufacturing cost saving, effective prevention of workpiece damage and improvement of the use performance of the clamp.

Description

Adjustable mechanical fixture

Technical Field

The invention relates to the technical field of clamp equipment, in particular to an adjustable mechanical clamp.

Background

The machine is also called a fixture, which is used to fix the object to be processed to make it occupy the correct position for receiving construction or detection. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a jig. Such as welding jigs, inspection jigs, assembly jigs, machine tool jigs, and the like. Among them, the machine tool clamp is the most common, and is often referred to as a clamp for short. When a workpiece is machined on a machine tool, the workpiece needs to be assembled (positioned) and firmly clamped (clamped) before machining in order to enable the surface of the workpiece to meet the technical requirements of the size, the geometric shape, the mutual position precision with other surfaces and the like specified in the drawing. The fixture generally comprises a positioning element (for determining the correct position of a workpiece in the fixture), a clamping device, a tool setting guide element (for determining the relative position of a tool and the workpiece or guiding the direction of the tool), an indexing device (for enabling the workpiece to complete the processing of a plurality of stations in one-time installation, including a rotary indexing device and a linear movement indexing device), a connecting element, a chuck type fixture body (a fixture base), and the like.

However, the existing clamps on the market are complex in structure, expensive to manufacture, and single in function, and generally only can clamp a certain part, so that the application range of the clamp is extremely low, the existing clamps cannot clamp the workpiece according to the hardness of the workpiece, when the workpiece with low hardness is clamped, the clamping force of the clamp cannot be easily controlled, the workpiece is easily deformed during clamping, and the clamping effect and the application performance of the clamp are affected.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an adjustable mechanical clamp.

In order to achieve the purpose, the invention adopts the following technical scheme:

the adjustable mechanical fixture comprises a bottom plate, wherein a V-shaped block is arranged on one side of the middle part of the upper end of the bottom plate, a workpiece is arranged on the upper end of the V-shaped block, two protection plates are arranged on two sides of the upper end of the bottom plate, a control switch is arranged on one side of the outer part of each protection plate, a threaded rod is connected between the two protection plates, one end of the threaded rod penetrates through the protection plates and is connected with an adjusting ring, a first threaded slider and a second threaded slider are sleeved on the outer side of the threaded rod, the upper ends of the first threaded slider and the second threaded slider are connected with a fourth connecting rod through a pin shaft, the other end of the fourth connecting rod is connected with a supporting plate through a pin shaft, a second supporting rod, a first supporting rod and a pushing device are sequentially arranged on the upper end of the supporting plate, a moving rod is, the utility model discloses a pressure sensor, including pressure sensor, pressure lever, thrust unit, pivot, first bracing piece, pressure sensor outer joint have the PLC controller, the one end of depression bar is connected with the second clamp plate, the other end of depression bar runs through the carriage release lever and is connected with first clamp plate, thrust unit includes the motor, be connected with the commentaries on classics board in the pivot of motor, a side edge of commentaries on classics board has first connecting rod through the round pin hub connection, the upper end of first bracing piece is equipped with U type groove, there is the second connecting rod inside in U type groove through the round pin hub connection, the one end and the first connecting rod of second connecting rod rotate to be connected, the other end of second connecting rod is connected with the third connecting rod, the other end and the carriage release lever of.

Preferably, one side of the rotating plate is provided with a third sliding groove in the same direction as the diameter of the rotating plate, a third sliding block is arranged inside the third sliding groove, the third sliding block is fixedly connected with the rotating plate through screws, and the control switch, the display, the PLC, the pressure sensor and the motor are connected through wires.

Preferably, the moving rod is fixedly connected with the first pressing plate through a bolt, the first pressing plate is an arc-shaped plate, a protective pad is arranged on one side of the first pressing plate, and the protective pad is a rubber protective pad.

Preferably, the upper end both sides of bottom plate all are equipped with first spout, the lower extreme of first screw thread slider and second screw thread slider all is equipped with the first slider with first spout assorted.

Preferably, the V-shaped block is fixedly connected with the bottom plate through screws.

Preferably, one side of the protection plate is provided with a second sliding groove, and one side of the support plate is provided with a second sliding block matched with the second sliding groove.

Preferably, the outer side of the pressure lever is sleeved with a spring, and the spring is positioned in the movable lever.

Preferably, the inside of second bracing piece is equipped with square groove, and square groove is located the below of carriage release lever.

Preferably, the outer side of the adjusting ring is sleeved with an anti-slip sleeve.

The adjustable mechanical clamp provided by the invention has the beneficial effects that: the clamping force of the clamp on the workpiece can be constantly monitored through the pressure sensor, the clamping force is constantly displayed through the display screen, the operation of the motor is controlled, when workpieces with different diameters are clamped, the supporting plate can be moved up and down through the threaded rod, the diameter of the workpiece and the diameter of the moving rod are located on the same plane, the clamping effect of the clamp on the workpiece is better, meanwhile, the V-shaped block can be replaced to clamp other types of parts, the application range of the clamp is wider, the structure is simple, the manufacturing cost is saved, the workpiece can be effectively prevented from being damaged, and the using performance of the clamp is improved.

Drawings

FIG. 1 is a schematic perspective view of an adjustable mechanical fixture according to the present invention;

FIG. 2 is a schematic diagram of an internal perspective view of an adjustable mechanical fixture according to the present invention;

FIG. 3 is a schematic structural diagram of a front view of an adjustable mechanical fixture according to the present invention;

FIG. 4 is a schematic diagram of an internal structure of a movable rod of the adjustable mechanical clamp according to the present invention;

FIG. 5 is a schematic view of a connecting structure between a movable rod and a second support rod of the adjustable mechanical fixture according to the present invention;

FIG. 6 is a schematic view of a portion A of an adjustable mechanical fixture according to the present invention;

fig. 7 is a schematic structural view of a part B of an adjustable mechanical clamp according to the present invention.

In the figure: the device comprises a bottom plate 1, an adjusting ring 2, a protection plate 3, a support plate 4, a V-shaped block 5, a pushing device 6, a first support rod 7, a first connecting rod 8, a U-shaped groove 9, a second connecting rod 10, a third connecting rod 11, a moving rod 12, a second support rod 13, a first pressing plate 14, a workpiece 15, a threaded rod 16, a first threaded slider 17, a second threaded slider 18, a fourth connecting rod 19, a first slider 20, a first sliding groove 21, a second slider 22, a second sliding groove 23, a motor 24, a rotating plate 25, a third sliding groove 26, a third slider 27, a screw 28, a bolt 29, a square groove 30, a protection pad 31, a pressure sensor 32, a second pressing plate 33, a pressing rod 34, a spring 35 and a control switch 36.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-7, an adjustable mechanical fixture comprises a base plate 1, wherein first sliding grooves 21 are formed in two sides of the upper end of the base plate 1, first sliding blocks 20 matched with the first sliding grooves 21 are arranged at the lower ends of a first threaded sliding block 17 and a second threaded sliding block 18, and therefore the threaded sliding blocks can move more stably and conveniently.

One side of the middle part of the upper end of the bottom plate 1 is provided with a V-shaped block 5, the V-shaped block 5 and the bottom plate 1 are fixedly connected through screws, and the V-shaped block 5 can be replaced, so that workpieces in different shapes can be placed.

The upper end of V type piece 5 is equipped with work piece 15, and the upper end both sides of bottom plate 1 all are equipped with guard plate 3, and one side of guard plate 3 is equipped with second spout 23, and one side of backup pad 4 is equipped with second spout 23 assorted second slider 22, can add the stability and the intensity of backup pad 4 to improve the tight effect of clamp, reinforcing performance.

The outside one side of guard plate 3 is equipped with control switch 36, is connected with threaded rod 16 between two guard plates 3, and the one end of threaded rod 16 runs through guard plate 3 and is connected with adjustable ring 2, and the antiskid cover has been cup jointed in the outside of adjustable ring 2, and it is more convenient in order to make to rotate adjustable ring 2.

First screw thread slider 17 and second screw thread slider 18 have been cup jointed in the outside of threaded rod 16, first screw thread slider 17 and second screw thread slider 18's upper end all has fourth connecting rod 19 through round pin hub connection, fourth connecting rod 19's the other end has backup pad 4 through round pin hub connection, backup pad 4's upper end is equipped with second bracing piece 13 in proper order, first bracing piece 7 and thrust unit 6, second bracing piece 13's inside is equipped with square groove 30, and square groove 30 is located the below of carriage release lever 12, can reduce the wearing and tearing speed of carriage release lever 12 under the condition that carriage release lever 12 weared and torn, thereby improve the life of carriage release lever 12.

The moving rod 12 is inserted in the middle of the second supporting rod 13, the moving rod 12 is fixedly connected with the first pressing plate 14 through the bolt 29, the first pressing plate 14 is an arc-shaped plate, a protective pad 31 is arranged on one side of the first pressing plate 14, the protective pad 31 is a rubber protective pad, the shape of the first pressing plate 14 can be changed, and therefore the workpiece 15 in different shapes can be clamped, and meanwhile the workpiece 15 is protected when the workpiece 15 is clamped.

Pressure sensor 32 and depression bar 34 are equipped with from left to right one side in the inside of carriage release lever 12, and pressure sensor 32 external connection has the PLC controller, and spring 35 has been cup jointed in the outside of depression bar 34, and spring 35 is located the inside of carriage release lever 12, can make depression bar 34 pass through second clamp plate 33 and pressure sensor 32 in close contact with to improve the accuracy of side clamp force measurement.

One end of depression bar 34 is connected with second clamp plate 33, the other end of depression bar 34 runs through movable rod 12 and is connected with first clamp plate 14, thrust unit 6 includes motor 24, be connected with in the pivot of motor 24 and change board 25, the one side of changeing board 25 is equipped with and changes board 25 diameter syntropy third spout 26, the inside of third spout 26 is equipped with third slider 27, third slider 27 passes through screw 28 fixed connection with commentaries on classics board 25, one side of third slider 27 is passed through the round pin axle and is rotated with first connecting rod 8 and be connected, can adjust the position of third slider 27 in third slider 27, thereby can adjust the clamp force of anchor clamps, just also can satisfy the demand of different hardness work pieces 15.

One side edge of commentaries on classics board 25 has first connecting rod 8 through round pin hub connection, the upper end of first bracing piece 7 is equipped with U type groove 9, there is second connecting rod 10 inside in U type groove 9 through round pin hub connection, the one end of second connecting rod 10 rotates with first connecting rod 8 to be connected, the other end of second connecting rod 10 is connected with third connecting rod 11, the other end and the carriage release lever 12 of third connecting rod 11 rotate to be connected, pressure sensor 32 outer connection has the display, control switch 36, the display, the PLC controller, connect through the wire between pressure sensor 32 and the motor 24.

The working principle is as follows: when the clamping device is used, the adjusting ring 2 is rotated to enable the threaded rod 16 to rotate, the threaded rod 16 enables the first threaded slider 17 and the second threaded slider 18 to move relatively, the supporting plate 4 is enabled to move to a proper height through the fourth connecting rod 19, the workpiece 15 is placed at the upper end of the V-shaped block 5, the motor 24 is started through the control switch 36, the motor 24 drives the rotating plate 25 to rotate, the rotating plate 25 enables the first pressing plate 14 to move through the first connecting rod 8, the second connecting rod 10, the third connecting rod 11 and the moving rod 12, clamping of the workpiece 15 is achieved, when clamping is achieved, the pressure sensor 32 constantly transmits clamping force to the PLC controller, the PLC controller displays the clamping force through the display, and when the clamping force reaches a clamping force set value of the workpiece, the PLC controller controls the motor 24 to stop working, and clamping and fixing of the workpiece is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The adjustable mechanical fixture comprises a bottom plate (1) and is characterized in that a V-shaped block (5) is arranged on one side of the middle of the upper end of the bottom plate (1), a workpiece (15) is arranged on the upper end of the V-shaped block (5), protection plates (3) are arranged on two sides of the upper end of the bottom plate (1), a control switch (36) is arranged on one side of the outer portion of each protection plate (3), a threaded rod (16) is connected between the two protection plates (3), one end of each threaded rod (16) penetrates through each protection plate (3) and is connected with an adjusting ring (2), a first threaded sliding block (17) and a second threaded sliding block (18) are sleeved on the outer side of each threaded rod (16), the upper ends of the first threaded sliding block (17) and the second threaded sliding block (18) are connected with a fourth connecting rod (19) through a pin shaft, the other end of the fourth connecting, a second support rod (13), a first support rod (7) and a pushing device (6) are sequentially arranged at the upper end of the support plate (4), a moving rod (12) is inserted in the middle of the second support rod (13), a pressure sensor (32) and a pressure rod (34) are sequentially arranged in the moving rod (12) from left to right, a PLC (programmable logic controller) is connected outside the pressure sensor (32), one end of the pressure rod (34) is connected with a second pressure plate (33), the other end of the pressure rod (34) penetrates through the moving rod (12) and is connected with a first pressure plate (14), the pushing device (6) comprises a motor (24), a rotating plate (25) is connected onto a rotating shaft of the motor (24), a first connecting rod (8) is connected onto one side edge of the rotating plate (25) through a pin shaft, a U-shaped groove (9) is arranged at the upper end of the first support rod (7), and a second connecting rod (10) is connected into the U-, the one end and the first connecting rod (8) of second connecting rod (10) rotate to be connected, the other end of second connecting rod (10) is connected with third connecting rod (11), the other end and carriage release lever (12) of third connecting rod (11) rotate to be connected, pressure sensor (32) outer joint has the display, connect through the wire between control switch (36), display, PLC controller, pressure sensor (32) and motor (24).

2. The adjustable mechanical clamp according to claim 1, wherein a third sliding groove (26) having the same diameter direction as the rotating plate (25) is formed in one side of the rotating plate (25), a third sliding block (27) is arranged inside the third sliding groove (26), the third sliding block (27) is fixedly connected with the rotating plate (25) through a screw (28), and one side of the third sliding block (27) is rotatably connected with the first connecting rod (8) through a pin shaft.

3. The adjustable mechanical clamp according to claim 1, wherein the moving rod (12) is fixedly connected with the first pressing plate (14) through a bolt (29), the first pressing plate (14) is an arc-shaped plate, a protective pad (31) is arranged on one side of the first pressing plate (14), and the protective pad (31) is a rubber protective pad.

4. The adjustable mechanical clamp according to claim 1, wherein both sides of the upper end of the bottom plate (1) are provided with first sliding grooves (21), and the lower ends of the first threaded sliding block (17) and the second threaded sliding block (18) are provided with first sliding blocks (20) matched with the first sliding grooves (21).

5. An adjustable mechanical clamp according to claim 1, characterized in that the V-shaped block (5) is fixedly connected with the bottom plate (1) by screws.

6. The adjustable mechanical clamp according to claim 1, wherein a second sliding groove (23) is formed on one side of the protection plate (3), and a second sliding block (22) matched with the second sliding groove (23) is formed on one side of the support plate (4).

7. The adjustable mechanical clamp according to claim 1, wherein a spring (35) is sleeved on the outer side of the pressure rod (34), and the spring (35) is positioned inside the movable rod (12).

8. An adjustable mechanical clamp according to claim 1, characterized in that the second support bar (13) is provided with a square groove (30) inside, and the square groove (30) is located below the movable bar (12).

9. The adjustable mechanical clamp according to claim 1, wherein an anti-slip sleeve is sleeved on the outer side of the adjusting ring (2).