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CN-224202891-U - Chuck device of energizable bidirectional tensile and compressive testing machine

CN224202891UCN 224202891 UCN224202891 UCN 224202891UCN-224202891-U

Abstract

The utility model discloses a chuck device of a bi-directional tension and compression tester capable of being electrified, which belongs to the field of testing of mechanical properties of materials and comprises a plurality of machine tools, wherein the machine tools are oppositely arranged, the four machine tools are arranged in a cross shape, the tail end of the upper surface of the machine tool 100 is integrally provided with a mounting plate 102, a driving assembly 201 is mounted on the mounting plate 102, the output end of a coupler on the driving assembly is connected with a ball screw, a sliding table is sleeved on the ball screw in a sliding way, the front end of the sliding table is provided with a connecting plate, the front surface of the connecting plate is provided with a mounting hole in the middle, a tension sensor is fixedly inserted in the mounting hole, and the front end of the tension sensor is connected with a clamp. According to the utility model, the yield process of the material under different stress states can be more comprehensively observed by carrying out two-way stretching and compression tests on the material under the electrifying condition, and a new yield criterion suitable for the complex loading condition can be established by analyzing the two-way stretching and compression test data under the electrifying condition, so that the prediction capability of the yield behavior of the material is improved.

Inventors

  • YAN YU
  • Hao Liulin
  • WANG HAIBO
  • HUO CHEN

Assignees

  • 北方工业大学

Dates

Publication Date
20260505
Application Date
20250429

Claims (10)

  1. 1. The chuck device of the energizable bidirectional tensile and compressive testing machine comprises a plurality of machine tools (100), wherein the machine tools (100) are oppositely arranged, a joint block (108) is commonly connected between the machine tools (100), The novel electrode pad is characterized in that a mounting plate (102) is integrally arranged at the tail end of the upper surface of the machine tool (100), a driving assembly (201) is rotationally arranged on the mounting plate (102), a ball screw (202) is connected to the output end of the driving assembly (201), a sliding table (2021) is sleeved on the ball screw (202) in a sliding mode, the sliding table (2021) is connected to the upper surface of the machine tool (100) in a sliding mode, a connecting plate (203) is arranged at the front end of the sliding table (2021), a mounting hole is formed in the front surface of the connecting plate (203) in the middle, a tension sensor (204) is fixedly inserted in the mounting hole, a clamp (205) is connected to the front end of the tension sensor (204), the clamp (205) comprises a substrate (2051), the substrate (2051) is of an L-shaped structure, an insulating pad (2059) is attached to the upper surface of the substrate (2051), positioning grooves are formed in the middle in the sliding table (2054), bolts are fixedly arranged on two sides of the positioning grooves, one of the positioning block (2054), one of the positioning blocks is fixedly arranged on each positioning plate, the connecting plate (2053) is fixedly connected to the upper surface of the connecting plate, the connecting plate (7) is fixedly provided with an electrode pad, and the electrode (2056) is filled with the inner groove (2056).
  2. 2. The chuck device of the energizable bidirectional tensile and compressive testing machine of claim 1, wherein a gap is reserved between the positioning block (2053) and the supporting block (2054), a stud is arranged in the center of the upper surface of the positioning block (2053) in a penetrating manner, the stud penetrates through the lower surface of the positioning block (2053) and is connected with a clamping block (2058), and the clamping block (2058) is positioned on the upper surface of the positioning groove.
  3. 3. The chuck device of the energizable bidirectional tensile and compressive testing machine according to claim 1, wherein the supporting blocks (2054) are arranged on the surface of the insulating pad (2059), the cross-sectional area of the supporting blocks (2054) is smaller than that of the insulating pad (2059), insulating strips (20591) are symmetrically arranged on one side of the vertical surface of the substrate (2051) on the insulating pad (2059), and the insulating strips (20591) are attached to the vertical surface of the substrate (2051).
  4. 4. The chuck device of the energizable bidirectional tensile and compressive testing machine according to claim 3, wherein screw holes are formed in the vertical surface of the base plate (2051) and the insulating strips (20591), side plates (2052) are symmetrically arranged on two sides of the upper surface of the base plate (2051), fixing holes matched with the side plates (2052) are formed in the side plates (2052), and when the side plates (2052) are assembled with the side plates (2052), the side plates (2052) and the fixing holes are sequentially penetrated through the screws to connect the side plates (2052), the insulating strips (20591) and the base plate (2051) into a whole.
  5. 5. The chuck device of the energizable bidirectional tensile and compressive testing machine of claim 4, wherein the insulating block (2056) is opposite to the insulating strip (20591), an insulating sheet (2055) is attached to the outer surface of the insulating block (2056), round holes are formed in the insulating block (2056) and the insulating sheet (2055) respectively, and the round holes coincide with the screw holes.
  6. 6. The chuck device of the energizable bidirectional tensile and compressive testing machine of claim 1, wherein the driving assembly (201) comprises a coupler, a planetary reducer and a servo motor, wherein the ball screw (202) is connected with the output end of the coupler on the driving assembly (201), the mounting plate (102) is provided with an assembly hole, the coupler is assembled on the rear surface of the mounting plate (102) through the assembly hole, the planetary reducer is connected with the input end of the coupler, and the servo motor is connected with the input end of the planetary reducer.
  7. 7. The chuck device for the energizable bi-directional tensile and compressive testing machine of claim 1, wherein four of said machine tools (100) are arranged in a cross-shaped arrangement, and wherein said four machine tools (100) are joined together in a unitary body by a joint block (108).
  8. 8. The chuck device for the energizable bidirectional tensile and compressive testing machine according to claim 1, wherein main sliding rails (103) are symmetrically arranged on the upper surface of the machine tool (100), a first sliding plate (104) is connected to the main sliding rails (103) in a sliding manner, the sliding table (2021) is fixed on the first sliding plate (104), a second sliding plate (105) is assembled on the main sliding rails (103) in a sliding manner, and the clamp (205) is assembled on the second sliding plate (105).
  9. 9. The chuck device of the energizable bidirectional tensile and compressive testing machine of claim 8, wherein the second auxiliary slide rail (107) is symmetrically arranged on the upper surface of the second slide plate (105), the clamp (205) is assembled with the second auxiliary slide rail (107) in a sliding way and is connected with the second slide plate (105) through the second auxiliary slide rail (107), the front end of one side surface of the machine tool (100) is provided with the first auxiliary slide rail (106), the sliding rod on the first auxiliary slide rail (106) is connected with a connecting sheet, and the connecting sheet is fixedly connected with the side surface of the clamp (205).
  10. 10. The chuck device for the energizable bi-directional tensile and compressive testing machine of claim 1, wherein the end of the machine tool (100) is formed into a butting protrusion (101) by cutting, the side surface of the joint block (108) is formed into a butting groove (1081) matched with the butting protrusion (101) by cutting, screw holes are formed in both sides of the butting protrusion (101) and both sides of the butting groove (1081), and when the machine tool (100) and the joint block (108) are positioned by matching the butting protrusion (101) with the butting groove (1081).

Description

Chuck device of energizable bidirectional tensile and compressive testing machine Technical Field The utility model belongs to the field of mechanical property testing of materials, and particularly relates to a chuck device of an energizable bidirectional tensile and compressive testing machine. Background The biaxial tension and compression mechanical testing machine is an important device for testing mechanical properties of materials under the action of biaxial tension and compression loads. The test device is widely applied to the tests of yield strength, tensile strength, compressive strength and elongation of various materials, semi-finished products and finished products, and can also be used for the tests of stripping, tearing, bending resistance, compression and the like. According to the bidirectional tensile pressure testing machine disclosed by the Chinese patent No. 206177714U, the cross arrangement of four groups of screw rod modules lays a foundation for bidirectional tensile testing of a cross test piece, synchronous control of a servo motor is realized, synchronous displacement control of two groups of chucks in the same axial direction is realized, bidirectional tensile testing under loading paths with different proportions can be completed, the bidirectional tensile testing machine adopts the servo motor to provide power, the bidirectional tensile cross test piece and the unidirectional tensile single tensile test piece can be accurately realized, and the tensile test with variable proportion and variable load is realized. At present, although various biaxial tensile testing machines exist on the market, such as mechanical type, thermal type, special type of soft material and the like, a mature and reliable implementation scheme has not been found in the aspect of measuring complex behaviors of materials under the combined action of an electric field and a mechanical load. The devices can realize accurate control of biaxial stretching and compression of materials at room temperature or in a heating state, but can not ensure even distribution of current fed into a test piece and good insulating property. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. In order to solve the problems set forth in the background art, the present utility model adopts the following technical scheme. The utility model provides a but circular telegram two-way tensile pressure test machine chuck device, including a plurality of lathes, a plurality of lathes set up relatively, and be connected with the joint piece jointly between the lathe, the terminal an organic whole of upper surface of lathe is provided with the mounting panel, it is provided with drive assembly to change on the mounting panel, drive assembly's output is connected with ball, sliding sleeve has the slip table on the ball, slip table sliding connection is at the lathe upper surface, the slip table front end is equipped with the connecting plate, the mounting hole has been seted up between the middle of the front surface of connecting plate, the mounting hole internal fixation peg graft has tension sensor, tension sensor's front end is connected with anchor clamps, anchor clamps include the base plate, the base plate is L shape structure, the upper surface laminating of base plate has insulating pad, fixed surface is connected with the supporting shoe on the base plate, the constant head tank has been seted up on the supporting shoe between the earth, and be located the constant head tank both sides fixedly and be provided with the locating piece through the bolt fastening, fixedly connected with electrode connection piece on one of the bolt, and set up the hole that supplies electrode connection on the electrode connection, the base plate rear surface has the groove, the intussuseption is filled with the insulating piece. A gap is reserved between the positioning block and the supporting block, a stud is arranged in the center of the upper surface of the positioning block in a penetrating way, the stud penetrates through the lower surface of the positioning block and is connected with a clamping block, and the clamping block is positioned on the upper surface of the positioning groove. The support block is arranged on the surface of the insulating pad, the cross section area of the support block is smaller than that of the insulating pad, insulating strips are symmetrically arranged on one side of the insulating pad, which is positioned on the vertical surface of the substrate, and the insulating strips are attached to the vertical surface of the substrate. Screw holes are formed in the vertical surface of the base pla