CN105538189A - Centering clamping device - Google Patents

Abstract

The invention discloses a centering clamping device. The centering clamping device comprises a rack, a clamping mechanism, a transverse mechanism, a guide sleeve, a supporting plate, a supporting base, an equal armed lever, a support and an adjusting mechanism; the supporting plate, the supporting base and the support are fixed to the rack; the equal armed lever is in an L shape, the center of the equal armed lever is rotationally fixed to the support, and strip-shaped holes in the corresponding length directions are formed in the two ends of the equal armed lever; the adjusting mechanism is vertically arranged on the rack, is connected with the lower end of the equal armed lever, and controls the equal armed lever to rotate; the guide sleeve is horizontally fixed to the supporting base, and the transverse mechanism is arranged on the guide sleeve in a sliding manner; and one end of the clamping mechanism is arranged on the supporting plate, the other end of the clamping mechanism is connected with the upper end of the equal armed lever through the transverse mechanism, and the equal armed lever rotates to drive the transverse mechanism to slide in the guide sleeve so as to control motion of the clamping mechanism. By means of the manner, whether a vertical swing rod is clamped by the centering clamping device or not can be controlled through an adjusting knob.

Description

A centering clamping mechanism

technical field

The invention relates to the technical field of clamping mechanism manufacturing, in particular to a centering clamping mechanism.

Background technique

The measurement of low-frequency internal friction is completed on a low-frequency mechanical spectrometer; the sample is placed upright, the lower end is fixed at the fixed end and cannot be adjusted, and the free long strip at the upper end is fixed on the vertical swing rod, which is connected and supported by the cotton thread on the support mechanism Balance it with a counterweight, add a small cyclic stress (stress in the horizontal direction) to the free end, and then measure the amplitude attenuation of the sample (free decay method) or the phase angle of the strain lagging behind the stress (forced vibration method) to measure Internal friction value; this requires that the centerlines of the fixed end and the free end are consistent and perpendicular to the horizontal direction to ensure the accuracy of the measurement. During the working process, if the cotton thread breaks or the cotton thread needs to be replaced, the weight of the vertical pendulum rod will press on the sample, but the sample is slender and easily broken. In order to avoid unnecessary measurement errors and readjust the position of the support frame, it is necessary to design a centering clamping mechanism to clamp the vertical swing rod so that the samples mounted on the vertical swing rod will not be damaged.

The existing clamping mechanism uses a vertical rod that moves up and down to drive the hinge. The lower end of the hinge is connected to the base, one end of the hinge is connected to the connecting plate, and the other end is connected to the vertical rod that moves up and down. The drag rod drives the linkage mechanism to realize tightening. Action; although the vertical pendulum can be clamped, its adjustment operation is cumbersome, the accuracy is not high, and the structure is complicated.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a centering clamping mechanism, which can control whether the centering clamping mechanism clamps the vertical swing rod by adjusting the knob, and is easy to operate; its structure is simple, high in precision, easy to use, and low in manufacturing cost. Low.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a centering clamping mechanism, including: a frame, a clamping mechanism, a transverse mechanism, a guide sleeve, a support plate, a support seat, an equi-arm lever, a support seat and adjustment mechanism; the support plate, support seat and support are all fixed on the frame; the equal arm lever is L-shaped, and the center of the equal arm lever is rotatably fixed on the support by bolts , both ends of the isometric lever are provided with strip-shaped holes along the respective length directions; the adjustment mechanism is vertically arranged on the frame, the adjustment mechanism is connected with one end below the isometric lever, and the adjustment mechanism controls the rotation of the isometric lever The guide sleeve is horizontally fixed on the support seat, and the transverse mechanism is slidably arranged on the guide sleeve; one end of the clamping mechanism is arranged on the support plate, and the other end of the clamping mechanism is connected with the horizontal mechanism through the horizontal mechanism. The upper end of the equal-arm lever is connected, and the rotation of the equal-arm lever drives the transverse mechanism to slide in the guide sleeve so as to control the action of the clamping mechanism.

Preferably, the clamping mechanism includes two clamping rods and two push-pull rods; one end of the two clamping rods is rotatably fixed on the support plate through screws, and the other ends of the two clamping rods are respectively connected to the One ends of the two push-pull rods are connected, and the other ends of the two push-pull rods are rotatably fixed on the transverse mechanism through screws; the opposite sides of the two clamping rods are correspondingly provided with clamping grooves.

Preferably, the adjustment mechanism includes a flange, a vertical rod and an adjustment knob; the flange is vertically fixed on the frame, and the outer ring at the lower end of the flange is provided with threads, and the adjustment knob is connected At the lower end of the flange, the axis positions of the adjustment knob and the flange coincide, the center of the adjustment knob has a threaded hole, and the center of the flange has a through hole; the upper end of the vertical rod is connected to the equal arm by bolts. In the bar-shaped hole below the lever, the vertical bar can slide on the bar-shaped hole, and the lower end of the vertical bar passes through the flange and is threadedly connected with the adjusting knob. Turning the adjusting knob, the vertical bar moves up and down to drive the isometric lever to rotate.

Preferably, the transverse mechanism includes a joint, an adjusting screw and a guide rod; the joint is connected to the bar-shaped hole above the equal-arm lever by bolts, and the bolt can slide in the bar-shaped hole above the equal-arm lever; The guide rod passes through the guide sleeve, the guide rod is slidably arranged on the guide sleeve, the push-pull rod is rotatably fixed at one end of the guide rod, and the other end of the guide rod is connected with the joint through an adjusting bolt, etc. The rotation of the arm lever can drive the guide rod to slide on the guide sleeve.

Preferably, a circular hole is opened in the center of the lower end of the flange, the diameter of the circular hole is larger than the diameter of the through hole, and the circular hole extends to the upper part of the flange; the circular hole is provided with an adjustment block and a set of adjustment pads , and the adjustment block and a set of adjustment pads are set on the guide rod, and the guide rod can slide in the adjustment block and a set of adjustment pads; the outer ring of the adjustment block is provided with external threads, and the round hole corresponds to the adjustment block The position is provided with an internal thread, the adjustment block and the flange are connected through threads, and the adjustment block is against a group of adjustment pads, and the adjustment block restricts a group of adjustment pads in the round hole.

Preferably, the set of adjusting pads includes two sealing rings and two washers, and the two sealing rings and the two washers are arranged alternately.

The beneficial effect of the present invention is that: the present invention can control whether the centering clamping mechanism clamps the vertical swing rod by adjusting the knob, and the operation is convenient.

Description of drawings

Fig. 1 is a partial cross-sectional structural schematic diagram of a front view of a preferred embodiment of a centering clamping mechanism of the present invention;

Fig. 2 is a top structural schematic diagram of a centering clamping mechanism of the present invention.

The marks of each part in the accompanying drawings are as follows: 1. Rack; 2. Clamping rod; 3. Push-pull rod; 4. Support seat; 5. Guide sleeve; 1. Equilibrium lever; 10. Support; 11. Vertical bar; 12. Flange; 13. Seal ring; 14. Washer; 15. Adjustment block; 16. Adjustment knob; 17. Support plate.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises:

A centering clamping mechanism, comprising: a frame 1, a clamping mechanism, a transverse mechanism, a guide sleeve 5, a support seat 4, a support plate 17, an equal arm lever 9, a support 10 and an adjustment mechanism; the support plate 17 , the supporting seat 4 and the bearing 10 are all fixed on the frame 1; the equal arm lever 9 is L-shaped, and the center of the equal arm lever 9 is rotatably fixed on the described bearing 10 by a bolt, and the equal arm Both ends of the lever 9 are provided with strip holes along their respective lengths; turn. The guide sleeve 5 is horizontally fixed on the support seat 4, and the horizontal mechanism is slidably arranged in the guide sleeve 5; one end of the clamping mechanism is arranged on the support plate 17, and the other end of the clamping mechanism passes through The transverse mechanism is connected to the upper end of the equal-arm lever 9, and the rotation of the equal-arm lever 9 drives the transverse mechanism to slide in the guide sleeve 5 so as to control the action of the clamping mechanism. The clamping mechanism includes two clamping rods 2 and two push-pull rods 3; one end of the two clamping rods 2 is rotatably fixed on the support plate 17 by a screw, and the other end of the two clamping rods 2 They are respectively connected to one end of two push-pull rods 3, and the other ends of the two push-pull rods 3 are rotatably fixed on the transverse mechanism through screws; the opposite sides of the two clamping rods 2 are correspondingly provided with clamping The groove can better clamp the workpiece; the clamping mechanism is a link mechanism, and the movement of the guide rod 6 in the horizontal direction can drive the clamping mechanism to clamp or loosen. The adjustment mechanism includes a flange 12, a vertical rod 11 and an adjustment knob 16; the flange 12 is vertically fixed on the frame 1, and the flange 12 can guide the vertical rod 11 in the vertical direction Function: the outer ring at the lower end of the flange 12 is provided with a left-handed external thread, and the outer ring corresponding to the lower end of the flange 12 on the adjustment knob 16 is provided with a left-handed internal thread, and the adjustment knob 16 is connected to the lower end of the flange 12 by threads , the axis positions of the adjusting knob 16 and the flange 12 coincide, the center of the lower end of the adjusting knob 16 has a right-handed threaded hole, and the center of the flange 12 has a through hole; the upper end of the vertical rod 11 is connected to the In the bar-shaped hole below the equal arm lever 9, the upper end of the vertical bar 11 can slide on the bar-shaped hole, the lower end of the vertical bar 11 is provided with a right-handed external thread, and the lower end of the vertical bar 11 passes through the flange 12 and the adjustment knob 16. Threaded connection, turning the adjusting knob 16, the vertical rod 11 moves up and down to drive the equal arm lever 9 to rotate; since the flange plate 12 is fixed on the frame 1, the vertical rod 11 can be rotated up and down by rotating the adjusting knob 16 in the forward and reverse directions. Moving, the top of the vertical bar 11 is rotatably connected with the equal arm lever 9, thereby driving the equal arm lever 9 to rotate around the support 10. The center of the lower end of the flange 12 has a circular hole, the diameter of the circular hole is greater than the diameter of the through hole, and the circular hole extends to the top of the flange 12; an adjustment block 15 and a group of adjustment pads are arranged in the circular hole, and The adjustment block 15 and a group of adjustment pads are sleeved on the vertical rod 11, and the vertical rod 11 can slide in the adjustment block 15 and a group of adjustment pads; the outer ring of the adjustment block 15 is provided with a right-handed external thread. The position corresponding to the adjustment block 15 on the hole is provided with a right-handed internal thread, the adjustment block 15 and the flange 12 are connected by threads, and the adjustment block 15 is against a group of adjustment pads, and the adjustment block 15 limits a group of adjustment pads to a circle. inside the hole. The set of adjusting pads includes two sealing rings 13 and two washers 14, and the two sealing rings 13 and the two washers 14 are arranged alternately. Described transverse mechanism comprises joint 8, adjusting screw rod 7 and guide bar 6; Described joint 8 is connected in the bar-shaped hole above described equal-arm lever 9 by bolt, and bolt can be in the bar-shaped hole above equal-arm lever 9 Sliding; the guide rod 6 passes through the guide sleeve 5, the guide rod 6 is slidably arranged on the guide sleeve 5, the push-pull rod 3 is rotatably fixed on one end of the guide rod 6, and the other end of the guide rod 6 Connected with the joint 8 by adjusting the bolt 7, the rotation of the equal arm lever 9 can drive the guide rod 6 to slide on the guide sleeve 5; move. During use, the clamping or loosening action of the centering clamping mechanism can be controlled by rotating the adjusting knob 16 forward and reverse.

The invention can control whether the centering clamping mechanism clamps the vertical swing rod by adjusting the knob, and the operation is convenient; the structure is simple, the precision is high, the use is convenient, and the manufacturing cost is low.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (6)

1. A centering clamping mechanism, characterized in that it comprises: a frame, a clamping mechanism, a transverse mechanism, a guide sleeve, a support plate, a support seat, an equal arm lever, a bearing and an adjustment mechanism; the support plate, Both the support seat and the support are fixed on the frame; the isometric lever is L-shaped, the center of the isometric lever is rotatably fixed on the support by bolts, and the two ends of the isometric lever are provided with strip-shaped holes along the respective length directions; the adjustment mechanism is vertically arranged on the frame, the adjustment mechanism is connected to one end below the equal arm lever, and the adjustment mechanism controls the rotation of the equal arm lever; the guide sleeve is horizontally fixed on the On the support seat, the transverse mechanism is slidably arranged on the guide sleeve; one end of the clamping mechanism is arranged on the support plate, and the other end of the clamping mechanism is connected to the upper end of the isometric lever through the transverse mechanism, The rotation of the equal arm lever drives the transverse mechanism to slide in the guide sleeve so as to control the action of the clamping mechanism. 2. A centering clamping mechanism according to claim 1, characterized in that: the clamping mechanism comprises two clamping rods and two push-pull rods; one end of the two clamping rods is rotatable by a screw fixed on the support plate, the other ends of the two holding rods are respectively connected to one ends of the two push-pull rods, and the other ends of the two push-pull rods are rotatably fixed on the transverse mechanism by screws; the two A clamping groove is correspondingly formed on the opposite side of the holding rod. 3. A centering and clamping mechanism according to claim 2, characterized in that: the adjustment mechanism includes a flange, a vertical rod and an adjustment knob; the flange is vertically fixed on the frame, The outer ring at the lower end of the flange is provided with threads, and the adjustment knob is connected to the lower end of the flange through threads. The axis positions of the adjustment knob and the flange coincide. There is a through hole; the upper end of the vertical rod is connected to the strip hole under the equal arm lever by bolts, the vertical rod can slide on the strip hole, and the lower end of the vertical rod passes through the flange and is connected with the adjustment knob by thread , turn the adjustment knob and the vertical rod moves up and down to drive the equal arm lever to rotate. 4. A centering and clamping mechanism according to claim 3, characterized in that: the transverse mechanism includes a joint, an adjusting screw and a guide rod; In the hole, the bolt can slide in the strip hole above the equal arm lever; the guide rod passes through the guide sleeve, the guide rod is slidably arranged on the guide sleeve, and the push-pull rod is rotatably fixed on the guide rod One end of the guide rod, the other end of the guide rod is connected with the joint through the adjustment bolt, and the rotation of the equal arm lever can drive the guide rod to slide on the guide sleeve. 5. A centering and clamping mechanism according to claim 4, characterized in that: a circular hole is opened at the center of the lower end of the flange, the diameter of the circular hole is larger than the diameter of the through hole, and the circular hole extends to the flange. The upper part of the blue plate; the circular hole is provided with an adjustment block and a set of adjustment pads, and the adjustment block and a set of adjustment pads are sleeved on the guide rod, and the guide rod can slide in the adjustment block and a set of adjustment pads; The outer ring of the adjustment block is provided with external threads, and the position corresponding to the adjustment block on the round hole is provided with internal threads. The pad is confined within the circular hole. 6 . The centering and clamping mechanism according to claim 5 , wherein the set of adjusting pads includes two sealing rings and two washers, and the two sealing rings and the two washers are arranged alternately.