CN211877587U

CN211877587U - Hardness testing device for fastener

Info

Publication number: CN211877587U
Application number: CN201922222059.6U
Authority: CN
Inventors: 黄晓东
Original assignee: Suzhou Tiandong Fastener Co ltd
Current assignee: Suzhou Tiandong Fastener Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-11-06
Anticipated expiration: 2029-12-12

Abstract

A hardness testing device for fasteners belongs to the technical field of mechanical basic parts and manufacturing, and comprises a machine table, an object placing workbench, a pressure head, a group of fastener limiting assemblies and a pressure head lifting assembly; the fastener limiting assembly comprises a locking knob, a set of nuts I, a stud I and a limiting block, the object placing workbench is provided with a set of sliding grooves along the radial direction, the sliding grooves and the fastener limiting assembly are arranged in a one-to-one mode, the limiting block is connected with the sliding grooves in a sliding mode, one end of the stud I extends into the sliding grooves, and the end portion, extending into the sliding grooves, of the stud I abuts against the limiting block. A stopper that is used for hardness testing arrangement of fastener, through set up anti-skidding groove and the spacing subassembly of fastener on planar thing workstation of putting, can be stable fix the fastener stable and carry out hardness detection on putting the thing workstation, the annular array structure of setting has effectually prevented that the fastener from taking place to slide in hardness testing arrangement, has very high spreading value.

Description

Hardness testing device for fastener

Technical Field

The utility model belongs to the technical field of machinery basic unit and manufacturing, specifically, relate to a hardness testing arrangement for fastener.

Background

Bolts are one of the most widely used mechanical standards. There are numerous manufacturers, each of which must pass certification by the national fastener standardization technical committee. Each bolt is required to be subjected to hardness detection according to national standard requirements, and is removed if the hardness is unqualified. Hardness is the ability of a material to locally resist the penetration of hard objects into its surface. Bolt hardness testing is an important stage in the production process.

The durometer is a hardness testing instrument. Metal hardness measurements were first defined by the hardness proposed by raoml and represent the ability of a material to resist the penetration of a hard object into its surface. It is one of the important performance indexes of metal materials.

For example, chinese patent with patent publication No. CN205981873U discloses a hardness detection device for hardware manufacturing, which includes a bracket, a slide rail, a rack, a connecting rod, a lifting rod, a rotating motor, a first bearing block, a second bearing block, a slider, a first rotating shaft, a first belt pulley, and the like; the support is located the branch left, and the branch upper end is equipped with places the board, and the top is equipped with slide rail and rotating electrical machines in the support, and the slide rail is located the rotating electrical machines left, is provided with the slider on the slide rail, is provided with the rack on the slider, and rack right side top is equipped with the connecting rod.

In the above-mentioned patent, it has the standing groove to place the board top, and the standing groove is located board top center department, directly will be detected the hardware and place in the standing groove, makes the in-process that detects the hardware, because the diameter size of hardware is different, can not effectually play good fixed action to the hardware, and the hardware rocks when detecting easily to fly out from the standing groove, lead to measuring inaccurate or can't accomplish the measurement, thereby influences measuring result's accuracy.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a hardness testing arrangement for fastener has solved the hardness check out test set of fastener among the prior art, can not carry out the good fixed of fastener, influences the problem of test accuracy.

The technical scheme is as follows: the utility model provides a hardness testing device for fastener, including the board, put thing workstation, pressure head, a set of fastener spacing subassembly and pressure head lifting unit, pressure head lifting unit sets up on the board, the pressure head sets up on pressure head lifting unit, put the thing workstation and fix and set up on the board to put the thing workstation and be located the pressure head under, fastener spacing subassembly sets up on putting the up end of thing workstation, and fastener spacing subassembly uses the center of putting the thing workstation as the centre of a circle and sets up according to the mode of annular array; wherein, the spacing subassembly of fastener includes locking knob, a set of nut, double-screw bolt one and stopper, it radially is equipped with a set of spout to put the thing workstation, the setting of the spacing subassembly one to one of spout and fastener, stopper and spout sliding connection, a set of nut stacks the setting in proper order to a set of nut is fixed to be set up on the outer wall of putting the thing workstation, the nut is one to be located the spout and extends to the outer circumference department of putting the thing workstation, double-screw bolt one and a set of nut threaded connection, the one end of double-screw bolt one stretches into in the spout to the tip that the double-screw bolt one stretched into in the spout offsets with the stopper, the locking knob sets up on the double-screw bolt is one to be located the tip outside the thing workstation.

Furthermore, according to the hardness testing device for the fastener, the first sliding block is arranged on the lower end face of the limiting block, and the end part, extending into the sliding groove, of the first stud abuts against the first sliding block.

Furthermore, in the hardness testing device for the fastener, a wear-resistant block is arranged between the first sliding block and the end part, extending into the sliding groove, of the first stud. The wear-resisting piece that sets up can offset with double-screw bolt one, avoids causing a large amount of wearing and tearing of slider one.

Further, foretell a hardness testing arrangement for fastener, it is discoid to put the thing workstation to put the central point of thing workstation and be equipped with the constant head tank, it is equipped with the antiskid groove of a set of concentric circles on the thing workstation to put. The constant head tank that sets up is convenient for the fastener and is placed, and the fastener is avoided skidding in antiskid groove.

Further, foretell a hardness testing arrangement for fastener, pressure head lifting unit includes lift driving motor, lift adjustment support frame, lift adjusting screw cover and pressure head mounting panel, lift adjustment support frame and lift driving motor are all fixed to be set up on the board to lift driving motor passes through the shaft coupling and is connected with lift adjusting screw, lift adjusting screw overlaps to be established on lift adjusting screw to lift adjusting screw cover and lift adjusting screw threaded connection, the pressure head mounting panel is fixed to be set up on the lower terminal surface of lift adjusting screw cover, the pressure head sets up on the lower terminal surface of pressure head mounting panel.

Furthermore, foretell a hardness test device for fastener, the lower tip of lift adjustment support frame is equipped with the second through-hole, be equipped with bush one on the inner wall of second through-hole, the lift adjustment screw rod cover sets up in bush one to lift adjustment screw rod cover can reciprocate in bush one. The first bushing is arranged, so that the lifting adjusting screw rod can slide on the lifting adjusting support frame smoothly.

Furthermore, foretell a hardness testing arrangement for fastener, be equipped with a set of guide post one on the lift regulation support frame, be equipped with the deflector on the outer wall of lift regulation screw rod cover, the deflector cover is established on a set of guide post one, the junction of deflector and a set of guide post one is equipped with guide sleeve one.

Further, foretell a hardness testing arrangement for fastener, be equipped with a set of guide post two on the board, the pressure head mounting panel cover is established on a set of guide post two, the pressure head mounting panel is equipped with uide bushing two with the junction of a set of guide post two. A set of guide post two and a set of guide post dual guidance structure that sets up have kept the pressure head to carry out the stability of hardness testing in-process, avoid the skew.

Further, in the hardness testing device for the fastener, the number of the set of fastener limiting assemblies is at least 4, and the number of the set of fastener limiting assemblies is even. Adopt the spacing subassembly of a set of fastener of even number structure, can 1 form two liang of symmetrical structures to it is firm more to make fixed.

Furthermore, according to the hardness testing device for the fastening piece, the locking knob is provided with the anti-slip edge. The anti-slip edge can prevent that the finger from skidding.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: a hardness testing arrangement for fastener, simple structure, rationally, high durability and convenient use, use is with low costs, adaptability is good, through set up anti-skidding groove and the spacing subassembly of fastener on planar thing workstation of putting, can be stable fix the fastener stable and carry out hardness detection on putting the thing workstation, the stopper of the annular array structure of setting, through the promotion of double-screw bolt one, can tightly press and cover on the fastener surface, thereby fix the fastener, this stable in structure is reliable, the effectual fastener that has prevented takes place to slide in hardness testing arrangement, very high spreading value has.

Drawings

Fig. 1 is a schematic structural view of a hardness testing device for a fastener according to the present invention;

fig. 2 is a first schematic structural view of the fastener limiting assembly of the present invention;

fig. 3 is a schematic structural diagram of a fastener limiting assembly according to the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3 according to the present invention.

In the figure: the device comprises a machine table 1, an object placing workbench 2, a sliding groove 21, a positioning groove 22, an anti-skidding groove 23, a guide post II 24, a guide sleeve II 25, a pressure head 3, a fastener limiting component 4, a locking knob 41, a nut I42, a stud I43, a limiting block 44, a sliding block I45, a wear-resistant block 46, a pressure head lifting component 5, a lifting driving motor 51, a lifting adjusting support frame 52, a lifting adjusting screw 53, a lifting adjusting screw sleeve 54, a pressure head mounting plate 55, a second through hole 56, a bushing I57, a guide post I58, a guide plate 59 and a guide sleeve I510.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The hardness testing device for the fasteners shown in fig. 1 comprises a machine table 1, an object placing workbench 2, a pressure head 3, a group of fastener limiting assemblies 4 and a pressure head lifting assembly 5, wherein the pressure head lifting assembly 5 is arranged on the machine table 1, the pressure head 3 is arranged on the pressure head lifting assembly 5, the object placing workbench 2 is fixedly arranged on the machine table 1, the object placing workbench 2 is positioned under the pressure head 3, the fastener limiting assemblies 4 are arranged on the upper end surface of the object placing workbench 2, and the fastener limiting assemblies 4 are arranged in an annular array mode by taking the center of the object placing workbench 2 as the center of a circle; the limiting assembly 4 of the fastener comprises a locking knob 41, a set of first nuts 42, a first stud 43 and a limiting block 44, the object placing workbench 2 is provided with a set of sliding grooves 21 along the radial direction, the sliding grooves 21 and the limiting assembly 4 of the fastener are arranged in a one-to-one mode, the limiting block 44 is connected with the sliding grooves 21 in a sliding mode, the set of first nuts 42 are sequentially stacked and arranged, the set of first nuts 42 are fixedly arranged on the outer wall of the object placing workbench 2, the first nuts 42 are located at the positions, where the sliding grooves 21 extend to the outer circumference of the object placing workbench 2, the first stud 43 is connected with the set of first nuts 42 in a threaded mode, one ends of the first studs 43 extend into the sliding grooves 21, the end portions, extending into the sliding grooves 21, of the first studs are abutted to the limiting block 44, and the locking knob 41 is. The lower end face of the limiting block 44 is provided with a first sliding block 45, and the end part of the first stud 43 extending into the sliding groove 21 is abutted against the first sliding block 45. And a wear-resisting block 46 is arranged between the end parts of the first sliding block 45 and the first stud 43, which extend into the sliding chute 21. The object placing workbench 2 is disc-shaped, a positioning groove 22 is formed in the center of the object placing workbench 2, and a group of concentric anti-skidding grooves 23 are formed in the object placing workbench 2. In order to maintain the stability of the fastener retainer assemblies 4 in gripping fasteners, the number of the set of fastener retainer assemblies 4 is at least 4, and the number of the set of fastener retainer assemblies 4 is even. The locking knob 41 is provided with an anti-slip edge. The anti-slip edge is convenient for the hand to apply force to lock the locking knob 41.

The working principle of the fastener limiting assembly 4 is as follows: the fasteners are placed at the positioning grooves 22, the first studs 43 of the first fastener limiting assemblies 4 are screwed one by one, the first studs 43 push the limiting blocks 44 to move towards the center direction of the object placing workbench 2 until the limiting blocks 44 are attached to the outer walls of the fasteners, certain pressure is continuously applied, the limiting blocks 44 of the first fastener limiting assemblies 4 tightly fix the fasteners, and then the pressing head 3 is driven to descend through the pressing head lifting assembly 5 to detect the hardness of the fasteners.

Example two

On the basis of embodiment structure, pressure head lifting unit 5's concrete structure does, pressure head lifting unit 5 includes lift driving motor 51, lift adjustment support frame 52, lift adjusting screw 53, lift adjusting screw cover 54 and pressure head mounting panel 55, lift adjustment support frame 52 and lift driving motor 51 are all fixed to be set up on board 2 to lift driving motor 51 passes through the shaft coupling and is connected with lift adjusting screw 53, lift adjusting screw cover 54 cover is established on lift adjusting screw 53 to lift adjusting screw cover 54 and lift adjusting screw 53 threaded connection, pressure head mounting panel 55 is fixed to be set up on lift adjusting screw cover 54's lower terminal surface, pressure head 3 sets up on the lower terminal surface of pressure head mounting panel 55. Wherein, the lower end of the lifting adjusting support frame 52 is provided with a second through hole 56, the inner wall of the second through hole 56 is provided with a first bushing 57, the lifting adjusting screw sleeve 54 is arranged in the first bushing 57, and the lifting adjusting screw sleeve 54 can move up and down in the first bushing 57. In addition, a group of first guide posts 58 are arranged on the lifting adjusting support frame 52, a guide plate 59 is arranged on the outer wall of the lifting adjusting screw sleeve 54, the guide plate 59 is sleeved on the group of first guide posts 58, and a first guide sleeve 510 is arranged at the joint of the guide plate 59 and the group of first guide posts 58. In addition, be equipped with a set of guide post two 24 on the board 2, pressure head mounting panel 55 cover is established on a set of guide post two 24, the junction of pressure head mounting panel 55 and a set of guide post two 24 is equipped with uide bushing two 25. Through the double guide structure, the stability of the pressure head 3 in the process of applying force and pressurizing can be improved by the first group of guide posts 58 and the second group of guide posts 24.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hardness testing device for a fastener, characterized by: the clamping device comprises a machine table (1), an object placing workbench (2), a pressure head (3), a group of fastener limiting assemblies (4) and a pressure head lifting assembly (5), wherein the pressure head lifting assembly (5) is arranged on the machine table (1), the pressure head (3) is arranged on the pressure head lifting assembly (5), the object placing workbench (2) is fixedly arranged on the machine table (1), the object placing workbench (2) is positioned under the pressure head (3), the fastener limiting assemblies (4) are arranged on the upper end face of the object placing workbench (2), and the fastener limiting assemblies (4) are arranged in an annular array mode by taking the center of the object placing workbench (2) as the center of a circle;

wherein, the fastener limiting component (4) comprises a locking knob (41), a group of first nuts (42), a first stud (43) and a limiting block (44), the object placing workbench (2) is provided with a group of sliding grooves (21) along the radial direction, the sliding grooves (21) and the fastener limiting component (4) are arranged in a one-to-one manner, the limiting block (44) is connected with the sliding grooves (21) in a sliding manner, the group of first nuts (42) are sequentially stacked and arranged, the group of first nuts (42) are fixedly arranged on the outer wall of the object placing workbench (2), the first nuts (42) are positioned at the outer circumference of the object placing workbench (2) and extend to the sliding grooves (21), the first studs (43) are in threaded connection with the group of first nuts (42), one ends of the first studs (43) extend into the sliding grooves (21), and the ends of the first studs (43) extending into the sliding grooves (21) are abutted against the limiting block (44, the locking knob (41) is arranged at the end part of the first stud (43) outside the object placing workbench (2).

2. The hardness testing device for fasteners according to claim 1, wherein: and a first sliding block (45) is arranged on the lower end face of the limiting block (44), and the end part of the first stud (43) extending into the sliding groove (21) is abutted against the first sliding block (45).

3. The hardness testing device for fasteners according to claim 2, wherein: and a wear-resistant block (46) is arranged between the end parts of the first sliding block (45) and the first stud (43) extending into the sliding groove (21).

4. The hardness testing device for fasteners according to claim 1, wherein: the object placing workbench (2) is disc-shaped, a positioning groove (22) is formed in the center of the object placing workbench (2), and a group of concentric anti-skidding grooves (23) are formed in the object placing workbench (2).

5. The hardness testing device for fasteners according to claim 1, wherein: pressure head lifting unit (5) are including lift driving motor (51), lift adjustment support frame (52), lift adjusting screw (53), lift adjusting screw cover (54) and pressure head mounting panel (55), lift adjustment support frame (52) and lift driving motor (51) are all fixed to be set up on board (1) to lift driving motor (51) are connected through shaft coupling and lift adjusting screw (53), lift adjusting screw cover (54) cover is established on lift adjusting screw (53) to lift adjusting screw cover (54) and lift adjusting screw (53) threaded connection, pressure head mounting panel (55) are fixed to be set up on the lower terminal surface of lift adjusting screw cover (54), pressure head (3) set up on the lower terminal surface of pressure head mounting panel (55).

6. The hardness testing device for fasteners according to claim 5, wherein: the lower end of the lifting adjusting support frame (52) is provided with a second through hole (56), the inner wall of the second through hole (56) is provided with a first bushing (57), the lifting adjusting screw sleeve (54) is arranged in the first bushing (57), and the lifting adjusting screw sleeve (54) can move up and down in the first bushing (57).

7. The hardness testing device for fasteners according to claim 6, wherein: be equipped with a set of guide post (58) on lift adjustment support frame (52), be equipped with deflector (59) on the outer wall of lift adjustment screw cover (54), deflector (59) cover is established on a set of guide post (58), the junction of deflector (59) and a set of guide post (58) is equipped with guide sleeve (510).

8. The hardness testing device for fasteners according to claim 6, wherein: be equipped with a set of guide post two (24) on board (1), pressure head mounting panel (55) cover is established on a set of guide post two (24), the junction of pressure head mounting panel (55) and a set of guide post two (24) is equipped with uide bushing two (25).

9. The hardness testing device for fasteners according to claim 1, wherein: the number of the fastener limiting assemblies (4) is at least 4, and the fastener limiting assemblies (4) are even.

10. The hardness testing device for fasteners according to claim 1, wherein: and the locking knob (41) is provided with an anti-slip edge.