Clamp for universal durometer

Abstract

The utility model discloses a clamp for a universal durometer, which comprises the universal durometer, a tray is arranged on the universal durometer, a fixing mechanism is arranged on the tray, a dual-purpose clamping mechanism is arranged on the fixing mechanism, the dual-purpose clamping mechanism comprises two support plates, a guide rod is fixedly connected between the two support plates, and the guide rod is arranged on the support plates. The two supporting plates are rotatably connected with a two-way screw rod, the end part of the two-way screw rod is fixedly connected with a rotating head with a hole, and the two-way screw rod is in threaded connection with two movable plates. According to the clamp for the universal durometer, the positions of two limiting plates are switched through a switching motor, then the limiting plates are embedded into limiting grooves through electric push rods, an arc opening clamping plate and a plane clamping plate are switched, then a rotating head with a hole is rotated to fix workpieces in different shapes, switching can be conducted without disassembling and assembling the clamp, and the clamping efficiency is improved. And therefore, the use convenience can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal hardness testers, in particular to a fixture for a universal hardness tester. Background Technique

[0002] A universal hardness tester is an instrument used in the field of materials science and can effectively detect the hardness of materials. In the prior art, when clamping workpieces of different shapes (such as workpieces with flat or curved surfaces) with a universal hardness tester, different fixtures need to be replaced, resulting in unsatisfactory convenience in use.

[0003] For example, the patent publication number CN215218316U, specifically a hardness testing fixture based on a hardness tester, belongs to the technical field of work fixtures, including a hardness tester. A transverse movement component is installed on the upper surface of the hardness tester, and a longitudinal movement component is installed on the transverse movement component. The transverse movement component and the longitudinal movement component are in a cross structure. A support plate is installed on the longitudinal movement component. Three grooves are opened at the edge of the upper surface of the support plate. A column is rotatably connected in the groove through a bearing seat II. A lifting rod is movably connected to the column. The top end of the lifting rod is fixedly connected with a fixed sleeve. A movable plate is sleeved in the fixed sleeve. One end of the movable plate is rotatably connected with a screw rod. The clamping adaptability of this work fixture is relatively high, and the adjustability is good. It can be used for materials of different sizes. Without releasing the fixed state of the material, hardness testing work can be carried out on various positions on the surface of the material. There are more test data and the test results are more accurate. There is also the problem that when clamping workpieces of different shapes (such as workpieces with flat or curved surfaces) with a universal hardness tester, different fixtures need to be replaced, resulting in unsatisfactory convenience in use. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a fixture for a universal hardness tester, which solves the problem that when clamping workpieces of different shapes (such as workpieces with flat or curved surfaces) with a universal hardness tester, different fixtures need to be replaced, resulting in unsatisfactory convenience in use.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A fixture for a universal hardness tester, including a universal hardness tester, a tray is provided on the universal hardness tester, a fixing mechanism is installed on the tray, and a dual-purpose clamping mechanism is installed on the fixing mechanism;

[0006] The dual-purpose clamping mechanism includes two support plates, a guide rod is fixedly connected between the two support plates, and a two-way screw is rotatably connected to the two support plates, and the ends of the two-way screw are fixedly connected to a rotating head with a hole, and the two-way screw is threadably connected to two movable plates, the top ends of the two movable plates are fixedly connected to a limiting seat, and the top surfaces of the two limiting seats are provided with limiting grooves, the limiting seat is rotatably connected with a switching shaft, the bottom of the switching shaft is fixedly connected to a worm gear, a worm is provided on one side of the worm gear, and the end of the worm gear is fixedly connected to a switching motor, the top of the switching shaft is fixedly connected to a connecting frame, and the bottoms of both ends of the connecting frame are fixedly connected to electric push rods, the ends of the output shafts of the two electric push rods are fixedly connected to the limiting plates, and the ends of the two limiting plates are respectively fixedly connected to a plane clamping plate and an arc-mouth clamping plate.

[0007] Preferably, the bidirectional screw is provided with two sections of threads in opposite directions, and the two movable plates are symmetrically arranged on the bidirectional screw, so that when the bidirectional screw rotates, the two movable plates can be driven to move towards or away from each other.

[0008] Preferably, the two movable plates are both arranged to penetrate the guide rod, and the movable plates are slidably connected to the guide rod, so as to play a guiding and limiting role in the movement of the movable plates, so that the movable plates can move along the guide rod.

[0009] Preferably, the limiting groove matches the limiting plate, and the cross-sectional shapes of the limiting groove and the limiting plate are both set to be T-shaped, so that the limiting plate can be embedded in the limiting groove, thereby playing a limiting and fixing role for the limiting plate.

[0010] Preferably, the worm is meshed with the worm wheel, and the output shaft end of the switching motor is transmission-connected to the switching shaft via the worm and the worm wheel, so that the switching motor can drive the switching shaft to rotate.

[0011] Preferably, the two limit plates are arranged on the top of the limit seat, and the plane clamp plate and the arc-shaped clamp plate are detachably connected to the limit plates, so that the plane clamp plate and the arc-shaped clamp plate can be easily replaced.

[0012] Preferably, the fixing mechanism includes a mounting plate, which is fixedly mounted on the bottom end of the supporting plate, and the mounting plate is vertically arranged to the supporting plate. Positioning blocks are fixedly connected to both ends of the bottom of the mounting plate. A fixing hole is opened on the mounting plate, and a fixing bolt is arranged inside the fixing hole, so that the dual-purpose clamping mechanism can be conveniently fixed on the pallet, thereby facilitating maintenance and installation.

[0013] The utility model provides a universal hardness tester clamp. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The fixture for the universal hardness tester switches the positions of two limit plates through a switching motor, and then the electric push rod embeds the limit plates into the limit grooves to switch the arc-shaped clamping plate and the flat clamping plate. Then, the perforated rotating head is rotated to fix workpieces of different shapes. It is not necessary to disassemble and assemble the fixture for switching, thus effectively improving the convenience of use.

[0015] 2. For the fixture of the universal hardness tester, by embedding the positioning blocks at the bottom of the mounting plate into the corresponding reserved grooves on the tray, the fixing holes are aligned with the reserved screw holes on the tray. Then, the fixing bolts are tightened, enabling the dual-purpose clamping mechanism to be conveniently fixed on the tray, thus facilitating maintenance and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is the schematic diagram of the structure of the dual-purpose clamping mechanism of the present invention;

[0018] Figure 3 is the schematic diagram of the connection structure between the switching motor and the limit plate of the present invention;

[0019] Figure 4 is the schematic diagram of the structure of the fixing mechanism of the present invention.

[0020] In the figure: 1. Universal hardness tester; 2. Dual-purpose clamping mechanism; 201. Support plate; 202. Guide rod; 203. Movable plate; 204. Bidirectional screw; 205. Perforated rotating head; 206. Limit seat; 207. Limit groove; 208. Switching shaft; 209. Connecting frame; 210. Worm gear; 211. Worm; 212. Switching motor; 213. Electric push rod; 214. Limit plate; 215. Arc-shaped clamping plate; 216. Flat clamping plate; 3. Tray; 4. Fixing mechanism; 401. Mounting plate; 402. Positioning block; 403. Fixing hole; 404. Fixing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-3, the present utility model provides a technical solution: a fixture for a universal hardness tester, including a universal hardness tester 1, a tray 3 is provided on the universal hardness tester 1, a fixing mechanism 4 is installed on the tray 3, and a dual-purpose clamping mechanism 2 is installed on the fixing mechanism 4. Different-shaped workpieces can be clamped and fixed through the dual-purpose clamping mechanism 2, and switching can be carried out without disassembling and assembling the fixture, thereby effectively improving the convenience of use.

[0023] The dual-purpose clamping mechanism 2 includes two support plates 201, on which there are support parts for supporting workpieces, the support parts and the limit seat 206 are arranged through, a guide rod 202 is fixedly connected between the two support plates 201, and a bidirectional screw 204 is rotatably connected to the two support plates 201, and a rotating head 205 with a hole is fixedly connected to the end of the bidirectional screw 204, so that a wrench tool can be conveniently inserted into the rotating head 205 with a hole, so that it can be conveniently rotated, and two movable plates 203 are threadedly connected to the bidirectional screw 204, and two sections of threads in opposite directions are provided on the bidirectional screw 204, and the two movable plates 203 are symmetrically arranged on the bidirectional screw 204, so that When the bidirectional screw 204 rotates, it can drive the two movable plates 203 to move toward or away from each other. The two movable plates 203 are both penetrated by the guide rod 202, and the movable plates 203 are slidably connected to the guide rod 202, so that the movement of the movable plates 203 can be guided and limited, so that they can move along the guide rod 202. The top ends of the two movable plates 203 are fixedly connected to the limit seats 206, and the top surfaces of the two limit seats 206 are provided with limit grooves 207. The limit seats 206 are rotatably connected with a switching shaft 208, and the bottom end of the switching shaft 208 is fixedly connected with a worm gear 210, and a worm 211 is provided on one side of the worm gear 210, and the end of the worm 211 is fixedly connected with The switching motor 212, the worm 211 and the worm wheel 210 are meshed, and the output shaft end of the switching motor 212 is connected to the switching shaft 208 through the worm 211 and the worm wheel 210, so that the switching motor 212 can drive the switching shaft 208 to rotate, and the self-locking function of the worm wheel 210 and the worm 211 can lock the switching shaft 208, thereby improving stability. The top of the switching shaft 208 is fixedly connected to a connecting frame 209, and the bottoms of both ends of the connecting frame 209 are fixedly connected to electric push rods 213, so that the electric push rods 213 can be used to drive the limit plate 214 to move up and down, so that the limit plate 214 can enter or leave the limit groove 207. The output shaft ends of the two electric push rods 213 are fixedly connected to the limit plate 214, the limit groove 207 matches the limit plate 214, and the cross-sectional shapes of the limit groove 207 and the limit plate 214 are both set to T-shaped, so that the limit plate 214 can be embedded in the limit groove 207, thereby being able to limit and fix the limit plate 214, and the ends of the two limit plates 214 are respectively fixedly connected with a plane clamp 216 and an arc-shaped clamp 215, and the two limit plates 214 are arranged on the top of the limit seat 206, and the plane clamp 216 and the arc-shaped clamp 215 are both detachably connected to the limit plate 214, so that the plane clamp 216 and the arc-shaped clamp 215 can be easily replaced.

[0024] See also Figure 1 and Figure 4, the fixing mechanism 4 includes a mounting plate 401 which is fixedly installed at the bottom end of the support plate 201, and the mounting plate 401 is perpendicular to the support plate 201. Positioning blocks 402 are fixedly connected to both ends of the bottom of the mounting plate 401. A fixing hole 403 is formed in the mounting plate 401, and a fixing bolt 404 is provided inside the fixing hole 403. By embedding the positioning blocks 402 at the bottom of the mounting plate 401 into the corresponding reserved slots on the tray 3, the fixing hole 403 can be aligned with the reserved screw holes on the tray 3, and then the fixing bolt 404 is tightened, so that the dual-purpose clamping mechanism 2 can be conveniently fixed on the tray 3, thus facilitating maintenance and installation.

[0025] During operation, the switching motor 212 drives the worm 211 to rotate. The rotation of the worm 211 drives the worm gear 210 to rotate. The rotation of the worm gear 210 drives the switching shaft 208 to rotate. The rotation of the switching shaft 208 drives the connecting frame 209 to rotate. The rotation of the connecting frame 209 switches the positions of the two limiting plates 214. Then, the electric push rod 213 drives the limiting plate 214 to move, and the limiting plate 214 is embedded into the limiting slot 207 to switch the arc-shaped clamping plate 215 and the flat clamping plate 216. Then, the perforated rotating head 205 is rotated. The rotation of the perforated rotating head 205 drives the bidirectional screw 204 to rotate. The rotation of the bidirectional screw 204 drives the movable plates 203 to move towards each other. The movement of the movable plates 203 drives the arc-shaped clamping plate 215 or the flat clamping plate 216 to move, so as to fix workpieces of different shapes. The switching can be carried out without disassembling and assembling the fixture, thus effectively improving the convenience of use.

[0026] Meanwhile, the content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A fixture for a universal hardness tester, comprising a universal hardness tester (1), characterized in that: The universal hardness tester (1) is provided with a tray (3), the tray (3) is equipped with a fixing mechanism (4), and the fixing mechanism (4) is equipped with a dual-purpose clamping mechanism (2); The dual-purpose clamping mechanism (2) comprises two support plates (201), a guide rod (202) is fixedly connected between the two support plates (201), a bidirectional screw rod (204) is rotatably connected to the two support plates (201), a rotating head (205) with a hole is fixedly connected to the end of the bidirectional screw rod (204), two movable plates (203) are threadedly connected to the bidirectional screw rod (204), the top ends of the two movable plates (203) are fixedly connected to the limiting seats (206), the top surfaces of the two limiting seats (206) are provided with limiting grooves (207), and the limiting seats (206) are rotatably connected to A switching shaft (208), wherein the bottom end of the switching shaft (208) is fixedly connected to a worm wheel (210), one side of the worm wheel (210) is provided with a worm (211), the end of the worm (211) is fixedly connected to a switching motor (212), the top end of the switching shaft (208) is fixedly connected to a connecting frame (209), the bottoms of both ends of the connecting frame (209) are fixedly connected to electric push rods (213), the output shaft ends of the two electric push rods (213) are fixedly connected to limit plates (214), and the ends of the two limit plates (214) are respectively fixedly connected to a plane clamping plate (216) and an arc-shaped clamping plate (215).

2. A universal hardness tester fixture according to claim 1, characterized in that: The bidirectional screw (204) is provided with two sections of threads in opposite directions, and the two movable plates (203) are symmetrically arranged on the bidirectional screw (204).

3. A universal hardness tester fixture according to claim 1, characterized in that: The two movable plates (203) are both arranged to penetrate the guide rod (202), and the movable plates (203) are slidably connected to the guide rod (202).

4. A universal hardness tester fixture according to claim 1, characterized in that: The limiting groove (207) matches the limiting plate (214), and the cross-sectional shapes of the limiting groove (207) and the limiting plate (214) are both set to be T-shaped.

5. The universal hardness tester fixture according to claim 1, characterized in that: The worm (211) is meshed with the worm wheel (210), and the output shaft end of the switching motor (212) is transmission-connected to the switching shaft (208) via the worm (211) and the worm wheel (210).

6. A universal hardness tester fixture according to claim 1, characterized in that: The two limit plates (214) are arranged on the top of the limit seat (206), and the plane clamping plate (216) and the arc-shaped clamping plate (215) are both detachably connected to the limit plates (214).

7. A universal hardness tester fixture according to claim 1, characterized in that: The fixing mechanism (4) comprises a mounting plate (401), wherein the mounting plate (401) is fixedly mounted on the bottom end of the support plate (201), and the mounting plate (401) and the support plate (201) are arranged vertically.

8. A universal hardness tester fixture according to claim 7, characterized in that: Both ends of the bottom of the mounting plate (401) are fixedly connected with positioning blocks (402), a fixing hole (403) is provided on the mounting plate (401), and a fixing bolt (404) is provided inside the fixing hole (403).

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