Equipment for DIC mechanical deformation analysis

Abstract

The utility model discloses a DIC mechanical deformation analysis device which comprises a pneumatic clamping jaw used for a movable cross beam of a tension testing machine and a pneumatic clamp used for a base of the tension testing machine, and a clamping mechanism is arranged at the clamping end of a jaw arm of the pneumatic clamping jaw. The clamping mechanism comprises a base block, the inner side of the base block is connected with the claw arm clamping end of the pneumatic clamping claw, and a clamping block is arranged on the outer side of the base block; clamping strips are fixedly arranged at the upper end and the lower end of the outer side of the base block respectively, clamping grooves are formed in the inner sides of the upper end and the lower end of the clamping block respectively, and the inserting sections of the clamping strips are matched with the clamping grooves in an inserted mode. The clamping device has the advantages that the clamping blocks can be replaced relative to the base block, the corresponding clamping blocks can be selected for use according to the corresponding sizes of tubular materials, and the corresponding tubular materials can be clamped in an attached mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital image technical field, concretely is a kind of DIC mechanical deformation analysis equipment. BACKGROUND

[0002] Tensile mechanics test is determined by continuously recording force and elongation in the tensile process, and the strength criterion and plastic mechanics characteristics are obtained, the tensile strength, breaking elongation, elastic modulus, poisson's ratio and other performance indexes of material can be tested by DIC.

[0003] The equipment for DIC mechanical deformation analysis includes a tensile device for tensile material and an analysis device for analyzing data, and for mechanical deformation analysis of pipe-shaped material, the tensile device is usually lifted longitudinally, the two ends of the pipe-shaped material are clamped and positioned respectively, and the middle segment of the pipe-shaped material is clamped by the liftable clamping jaw and gradually moved upward to deform the pipe-shaped material, and the analysis device is used to analyze the mechanical deformation of the pipe-shaped material in the test state.

[0004] Since the sizes of pipe-shaped materials are different, it is not completely applicable to match different sizes of pipe-shaped materials by the clamping groove at the clamping end of the clamping jaw, and forced clamping can lead to instability, and the overall replacement of the clamping jaw is high in cost.

[0005] Therefore, we propose a DIC mechanical deformation analysis equipment. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a DIC mechanical deformation analysis equipment to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a DIC mechanical deformation analysis equipment, comprising a pneumatic clamping jaw for moving crossbeam of tensile testing machine and a pneumatic clamp for base of tensile testing machine, the top of the pneumatic clamping jaw is connected with the bottom side of the moving crossbeam, two pneumatic clamps are symmetrically arranged on the top side of the base, and the clamping end of the jaw arm of the pneumatic clamping jaw is provided with a clamping mechanism.

[0008] The clamping mechanism comprises a base block, the inner side of the base block is connected with the clamping end of the jaw arm of the pneumatic clamping jaw, and the outer side of the base block is arranged with a clamping block.

[0009] Among them, the upper and lower ends of the outer side of the base block are fixedly provided with clamping strips respectively, the inner sides of the upper and lower ends of the clamping block are respectively provided with clamping grooves, the clamping strip insertion section is matched with the clamping groove, and the stability is realized by the friction force of the clamping strip inserted into the clamping groove.

[0010] Preferably, the clamping strip insertion section is inclined, and the clamping strip insertion section is matched with the clamping groove.

[0011] Preferably, the corners of the two ends of the clamping strip are arc-shaped.

[0012] Preferably, the base block is fixedly provided with a baffle A at one end, and the protruding section of the baffle A is in limiting cooperation with one end of the clamping block.

[0013] Preferably, the base block is movably provided with a baffle B at the other end, the base block is fixedly provided with a plurality of limiting sliding blocks at the other end, a plurality of sliding grooves are formed in the inner side of the baffle B, the plurality of limiting sliding blocks are in sliding cooperation with the plurality of sliding grooves, a rack is fixedly arranged on the inner end of the baffle B, a fixed block is fixedly arranged on the inner side of the base block at the other end, a connecting shaft is rotatably connected to one side of the fixed block through a rotating shaft, a gear is sleeved on the connecting shaft, the gear is in meshing connection with the rack, and a handle is fixedly arranged on the outer end of the connecting shaft.

[0014] Preferably, the limiting sliding block is T-shaped in cross section, and the limiting sliding block is matched with the sliding groove.

[0015] Preferably, the rack is connected with a stop block through a torsional spring at the protruding end, and the stop block is in limiting cooperation with the gear.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The base block, the clamping block, the clamping strip and the clamping groove are arranged, the clamping block can be replaced relative to the base block, corresponding clamping blocks can be selected and used according to the corresponding size of the pipe-shaped material, the pipe-shaped material can be clamped and held, and the pipe-shaped material of different sizes can be matched with the clamping groove at the clamping end of the clamping jaw.

[0018] 2. The baffle A, the baffle B, the rack, the fixed block, the connecting shaft, the gear and the handle are arranged, the clamping strip inserted into the clamping groove is limited after the clamping block is installed, the stability of the clamping strip after being inserted is further maintained, the position of the baffle B can be adjusted, and the insertion and extraction of the clamping strip are not affected.

[0019] 3. The stop block and the torsional spring are arranged, when the gear is close to the stop block, the gear is limited by the stop block, the gear cannot be separated from the rack, the stop block can be slightly rotated under the action of the torsional spring when being extruded, and the acting force when the rack and the stop block are in contact is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model;

[0021] Figure 2 It is a pneumatic clamping jaw structure schematic view of the utility model;

[0022] Figure 3The utility model discloses a pneumatic clamping jaw clamping mechanism structure schematic view.

[0023] Figure 4 The utility model discloses a clamping block plug -in structure schematic view.

[0024] Figure 5 The utility model discloses a baffle B drive connection structure schematic view.

[0025] Figure 6 The utility model discloses a Figure 5 The utility model discloses an A place enlarged schematic view.

[0026] Figure 7 The utility model discloses a clamping block connection structure schematic view.

[0027] In the drawing: 100, pneumatic clamping jaw;200, pneumatic clamp;

[0028] 101, base block;102, clamping block;103, clamping strip;104, baffle A;105, baffle B;106, limit sliding block;107, rack;108, fixed block;109, connecting shaft;110, gear;111, handle;112, clamping block;113, torsional spring;

[0029] 1021, clamping groove;

[0030] 1051, sliding slot. Specific embodiments

[0031] Below, the technical scheme in the utility model embodiment will be clearly and completely described with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, but not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtains without making the creative labor all belong to the range of protection of the utility model.

[0032] Please refer to Figures 1 to 4The utility model provides an embodiment: a kind of DIC mechanical deformation analysis equipment, including pneumatic clamping jaw 100 for tension testing machine moving crossbeam and pneumatic clamp 200 for tension testing machine base, pneumatic clamping jaw 100 top side is connected with moving crossbeam bottom, two pneumatic clamps 200 are symmetrically arranged in base top side, pneumatic clamping jaw 100 includes cylinder A, cage A, cross frame, rotating claw arm etc., cage and rotating claw arm are connected by shaft rotation each other, by cylinder driving cross frame longitudinal movement, so that rotating claw arm of multiple position rotation connection with cross frame does clamping action;Pneumatic clamp 200 includes cylinder B, cage B, pressure block A connected with the gas rod of cylinder B, pressure block B arranged in cage pedestal etc., the end of tubular material is placed between pressure block A and pressure block B, cylinder B pushes pressure block A to move down and cooperates pressure block B to clamp tubular material end and position;The claw arm clamping end of pneumatic clamping jaw 100 is equipped with clamping mechanism;

[0033] Clamping mechanism includes base block 101, and the inside of base block 101 is connected with the claw arm clamping end of pneumatic clamping jaw 100, and the outside of base block 101 is arranged with clamping block 102;Wherein, the upper and lower ends of the outside of base block 101 are fixedly provided with clamping strip 103 respectively, and the inside of the upper and lower ends of clamping block 102 is respectively provided with clamping groove 1021, and clamping strip 103 insertion section is inserted and matched with clamping groove 1021, and the friction force of clamping strip 103 inserted into clamping groove 1021 is used to realize stability.

[0034] The utility model discloses a base block 101, clamping block 102, clamping strip 103 and clamping groove 1021 are set up, and clamping block 102 can be replaced relative to base block 101, and corresponding clamping block 102 can be selected and used according to the size of tubular material, so that the tubular material is clamped and matched, and the advantage that different sizes of tubular material are not completely applicable by the clamping groove at the clamping end of the clamping jaw is solved.

[0035] Please refer to Figure 3 And Figure 4 The utility model provides an embodiment: a kind of DIC mechanical deformation analysis equipment, and clamping strip 103 insertion section is inclinedly set, and clamping strip 103 insertion section is adapted with clamping groove 1021.The insertion position is inclinedly set, clamping block 102 is positioned while being inclined, and the stress of inclined insertion section is inclined angle, and force is dispersed, and the stress of clamping block 102 is more simple for clamping strip 103 insertion section.

[0036] The edge of both ends of clamping strip 103 is arranged as arc, and when the end of clamping strip 103 is inserted into clamping groove 1021, the contact of arc surface makes clamping strip 103 easy to insert.

[0037] Please refer to Figure 3 、 Figure 5 And Figure 6The utility model provides an embodiment: a kind of DIC mechanical deformation analysis equipment, baffle A 104 is fixed with one end of base block 101, baffle A 104 protruding section is limited with one end of clamping block 102, when inserting card strip 103, one end of clamping block 102 contacts baffle A 104 protruding section and then indicates that card strip 103 is inserted in place, prevent excessive insertion card strip 103.

[0038] The utility model discloses a baffle A 104, baffle B 105, rack 107, fixed block 108, connecting shaft 109, gear 110 and handle 111 are set, have after the installation of clamping block 102, the limit of card strip 103 inserted in card slot 1021, further keep the stability after the insertion of card strip 103, and baffle B 105 can adjust position, do not affect the insertion and extraction of card strip 103 with the advantages.

[0039] Please refer to Figure 7 The utility model provides an embodiment: a kind of DIC mechanical deformation analysis equipment, rack 107 protruding end is connected with stop block 112 by torsion spring 113, the elastic coefficient of torsion spring 113 is selected by the technical personnel of this profession according to actual situation and is used by oneself, stop block 112 is limited with gear 110.

[0040] The utility model sets up stop block 112 and torsion spring 113, when gear 110 is close to stop block 112, limit gear 110 by stop block 112, gear 110 cannot be separated from rack 107, and under the action of torsion spring 113, stop block 112 can rotate slightly when being extruded, reduce the advantage of the force of contact between rack 107 and stop block 112.

[0041] Working principle: when the tubular material is tested by mechanical analysis, according to the diameter of the tubular material, the corresponding clamp block 102 is selected, the clamping strip 103 is inserted into the butt joint corresponding to the clamping groove 1021, until the clamp block 102 contacts the extension section of the baffle A 104, at this time, the handle 111 is rotated, the connecting shaft 109 is rotated to drive the gear 110 to rotate, the rack 107 connected with the gear 110 drives the baffle B 105 to move, the limiting slide block 106 moves along the sliding groove 1051, until the baffle B 105 stops the clamping strip 103, the baffle B 105 cooperates with the baffle A 104 to further keep the clamping strip 103 stable after being inserted. The end of the tubular material is placed between the pressing block A and the pressing block B of the pneumatic clamp 200, the pneumatic cylinder B pushes the pressing block A to move downward to cooperate with the pressing block B to clamp and position the end of the tubular material, the two ends of the tubular material are positioned, the pneumatic clamping jaw 100 is moved downward by the moving cross beam of the tensile testing machine, until the middle section of the tubular material is located between the two clamp blocks 102, the two clamp blocks 102 of the pneumatic clamping jaw 100 are relatively moved to clamp the tubular material, then the moving cross beam is uniformly moved upward, the middle section of the clamped tubular material is pulled upward relative to the two ends, in the pulling process, the clamped position of the middle section of the tubular material will be stretched and deformed, and the analysis equipment is matched to analyze the mechanical deformation of the tubular material in the test state.

[0042] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An apparatus for DIC mechanical deformation analysis, characterized by: The utility model provides pneumatic clamping jaw (100) for tension testing machine mobile crossbeam and pneumatic clamp (200) for tension testing machine base, and the jaw arm clamping end of pneumatic clamping jaw (100) is equipped with clamping mechanism; The clamping mechanism comprises a base block (101) connected to the jaw arm clamping end of the pneumatic clamping jaw (100) on the inside, and a clamping block (102) arranged on the outside of the base block (101). Wherein, the upper and lower ends of the outside of the base block (101) are respectively fixedly provided with clamping strips (103), and the inside of the upper and lower ends of the clamping block (102) is respectively provided with clamping grooves (1021), and the insertion section of the clamping strip (103) is inserted and matched with the clamping groove (1021).

2. The DIC mechanical deformation analysis apparatus according to claim 1, characterized in that: The insertion section of the clamping strip (103) is obliquely arranged, and the insertion section of the clamping strip (103) is matched with the clamping groove (1021).

3. The DIC mechanical deformation analysis apparatus according to claim 2, characterized by: The corners of both ends of the clamping strip (103) are arc-shaped.

4. The DIC mechanical deformation analysis apparatus according to claim 1, characterized by: One end of the base block (101) is fixedly provided with a baffle A (104), and the protruding section of the baffle A (104) is limitingly matched with one end of the clamping block (102).

5. The DIC mechanical deformation analysis apparatus according to claim 1, characterized by: The other end of the base block (101) is movably provided with a baffle B (105), and the other end of the base block (101) is fixedly provided with a plurality of limiting sliding blocks (106), the inside of the baffle B (105) is provided with a plurality of sliding grooves (1051), a plurality of the limiting sliding blocks (106) and a plurality of the sliding grooves (1051) are slidingly matched one by one, a rack (107) is fixedly arranged on the inner end of the baffle B (105), the inside of the base block (101) is fixedly provided with a fixed block (108) on the other end, a connecting shaft (109) is rotatably connected to one side of the fixed block (108) through a rotating shaft, a gear (110) is sleeved on the connecting shaft (109), the gear (110) is meshingly connected with the rack (107), and a handle (111) is fixedly arranged on the outer end of the connecting shaft (109).

6. The DIC mechanical deformation analysis apparatus according to claim 5, characterized by: The cross section of the limiting sliding block (106) is T-shaped, and the limiting sliding block (106) is matched with the sliding groove (1051).

7. The DIC mechanical deformation analysis apparatus according to claim 5, characterized by: The protruding end of the rack (107) is connected with a stop block (112) through a torsion spring (113), and the stop block (112) is limitingly matched with the gear (110).

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