Automobile transmission shaft welding strength testing machine

Abstract

The utility model belongs to the technical field of testing devices, and particularly relates to an automobile transmission shaft welding strength testing machine, which comprises a working table, and the working table is provided with a driving part which comprises a motor and a right clamp connected with a motor shaft of the motor; the moving part comprises a left-right translation mechanism, a torque sensor and a left clamp, the left-right translation mechanism comprises a left-right translation end, the left side of the torque sensor is connected with the left-right translation end through a sensor support, the right side of the torque sensor is connected with the left clamp, and the left clamp and the right clamp are coaxially and oppositely arranged; the left-right translation mechanism drives the left clamp to be close to or away from the right clamp. According to the utility model, the distance between the left clamp and the right clamp can be adjusted through the movable left clamp so as to adapt to static torsion tests of to-be-detected shafts with various lengths.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test device technical field, concretely relates to a kind of automobile transmission shaft welding strength testing machine. BACKGROUND

[0002] Automobile transmission shaft is the important component of automobile drive train, it is with gearbox, drive axle together with the power of engine transmission to wheel, so that automobile generates driving force.Automobile transmission shaft is a high speed, less support rotating body, so it must be static torsion test to weld after friction welding, to identify the welding strength of weld, prevent unqualified products such as false welding, fake welding from flowing into next process, so as to ensure product quality.

[0003] For the static torsion test of different length transmission shaft, different testing machines need to be matched for experiment, which obviously increases the test cost. UTILITY MODEL CONTENTS

[0004] The utility model discloses to the above technical problem, the purpose is to provide a kind of automobile transmission shaft welding strength testing machine.

[0005] A kind of automobile transmission shaft welding strength testing machine, including workbench, be provided with on the workbench:

[0006] Driving part, the driving part includes motor and right fixture connected with the motor shaft of the motor;

[0007] Moving part, the moving part includes left-right translation mechanism, torque sensor and left fixture, the left-right translation mechanism includes left-right translation end, the left side of the torque sensor is connected left-right translation end by sensor support, the right side of the torque sensor is connected the left fixture, the left fixture is coaxially opposite with the right fixture Setting, the left fixture is driven by the left-right translation mechanism to be close to or away from the right fixture.

[0008] Optionally, the motor uses the speed reducer motor with speed reducer.

[0009] Optionally, the left-right translation mechanism uses cylinder mechanism, the piston rod axial direction of the cylinder mechanism is left-right direction, the right end of the piston rod is fixedly connected as left-right translation end with the sensor support.

[0010] Optionally, the moving part further includes screw translation mechanism, and the screw translation mechanism includes:

[0011] Lead screw, both ends of the lead screw are fixed on the workbench by bearing, and the axial direction of the lead screw is left-right direction;

[0012] Hand wheel, the hand wheel is fixedly connected to the left end of the lead screw;

[0013] A screw nut is rotationally connected to the screw rod, and the screw nut is fixedly connected to the left-right translation mechanism.

[0014] Optionally, the screw translation mechanism further comprises:

[0015] A first sliding plate is fixedly connected to the screw nut, and the first sliding plate is fixedly connected to the left-right translation mechanism.

[0016] Two slide rails are arranged on the workbench and located on the front and back sides of the screw rod.

[0017] A plurality of sliding blocks are arranged on the front and back sides of the bottom of the first sliding plate, and the sliding blocks on the front and back sides are slidingly connected to the slide rails on the same side.

[0018] Optionally, the screw translation mechanism further comprises:

[0019] A second sliding plate is also provided with the sliding blocks on the front and back sides of the bottom, and the second sliding plate is fixedly connected to the sensor support.

[0020] Optionally, one or more support portions are arranged between the driving portion and the moving portion, and the support portion comprises:

[0021] A bracket sliding plate is also provided with the sliding blocks on the front and back sides of the bottom.

[0022] A support frame is fixedly connected to the bracket sliding plate.

[0023] A V-shaped block is fixedly connected to the support frame, and the V-shaped block is provided with one or more V-shaped grooves connected for supporting the shaft to be detected, and the opening sizes of the V-shaped grooves are the same or different.

[0024] Optionally, one or more support portions close to the moving portion serve as a moving support portion, and the moving support portion further comprises:

[0025] A support connecting pressing block comprises a lower pressing block and an upper pressing block, and the top surface of the lower pressing block and the bottom surface of the upper pressing block are respectively provided with semicircular grooves in communication with each other, and when the upper pressing block is detachably connected to the lower pressing block, the two semicircular grooves form a connecting rod accommodating groove.

[0026] A support connecting rod is fixedly connected to the sensor support at the left end, and the support connecting rod is inserted into the connecting rod accommodating groove and the right end can be extended out of the connecting rod accommodating groove.

[0027] Optionally, one or several of the support parts away from the moving part as a fixed support part, the fixed support part further comprises:

[0028] The locking plate is an L-shaped plate, the vertical section of the locking plate is fixedly connected with the bracket slide plate, and the horizontal section of the locking plate is provided with a locking through hole penetrating the upper and lower portions;

[0029] The adjustable locking handle is installed on the locking plate, the locking shaft of the adjustable locking handle is in the axial direction of the upper and lower directions, the locking shaft faces the locking through hole and can pass through the locking through hole and abut against the workbench.

[0030] Optionally, the automobile transmission shaft welding strength testing machine further comprises a blanking mechanism, and the blanking mechanism comprises:

[0031] The blanking slide plate is fixed on the workbench and located in front of the driving part and the moving part, and the plate surface of the blanking slide plate is an inclined surface inclined downward from back to front;

[0032] One or several blanking cylinders are installed on the support frame, and the piston rod of the blanking cylinder is in the axial direction of the upper and lower directions;

[0033] One or several blanking plates are fixedly connected with the piston rod of the blanking cylinder, the blanking plate is located on the side of the V-shaped block, the top surface of the blanking plate is an inclined surface inclined downward from back to front, the top surface of the blanking plate is provided with a V-shaped groove for supporting the to-be-detected shaft, the rear side groove surface of the V-shaped groove extends to the rear side of the blanking plate, the front side groove surface of the V-shaped groove does not exceed the front side groove surface of the V-shaped groove on the most front side of the side, and the front section of the blanking plate extends above the rear end of the blanking slide plate.

[0034] Optionally, the automobile transmission shaft welding strength testing machine further comprises a protective cover, the protective cover covers the workbench, the protective cover is provided with an avoiding opening in communication between the inside and the outside, and the front side of the blanking slide plate extends out of the avoiding opening.

[0035] Optionally, the right clamp comprises:

[0036] The right shaft sleeve is fixedly connected with the motor shaft of the motor;

[0037] The right flange is fixedly connected with the right shaft sleeve, the right flange is provided with a right chuck accommodating groove in communication between the left and right sides, the right chuck accommodating groove is a polygonal accommodating groove, the left side of the right flange is further provided with a locking hole in communication between the inside and the outside of the right chuck accommodating groove, and the axial direction of the locking hole is perpendicular to the axial direction of the right chuck accommodating groove;

[0038] Right baffle, which is arranged in the right shaft sleeve and located at the right side of the motor shaft of the motor;

[0039] Right chuck, the right outer surface of which is configured as a polygonal surface matching the right chuck accommodating groove, the right chuck is detachably fixed in the right chuck accommodating groove, and a right chuck communicating opening in communication with left and right sides is arranged in the middle part of the right chuck, the inner diameter of the left side part of the right chuck communicating opening is smaller than that of the right side part, and the left side part of the right chuck communicating opening is configured to be inserted into one end of the shaft to be detected;

[0040] Right threaded stopper, which is threadedly connected to the right side part of the right chuck communicating opening.

[0041] Optionally, the left clamp comprises:

[0042] Transition disc, which is fixedly connected to the right side of the torque sensor, and a limiting ring sleeve is arranged in the middle part of the right disc surface of the transition disc;

[0043] Spline sleeve, which is fixedly connected to the transition disc and located at the right side of the transition disc, and the limiting ring sleeve is arranged in the spline sleeve;

[0044] Moving spline, which is arranged in the spline sleeve and can move along the axial direction of the spline sleeve, and a left chuck accommodating groove in communication with left and right sides is arranged in the middle part of the moving spline, and the left chuck accommodating groove is a polygonal accommodating groove;

[0045] Left chuck, the left outer surface of which is configured as a polygonal surface matching the left chuck accommodating groove, the left chuck is detachably fixed in the left chuck accommodating groove, and a left chuck communicating opening in communication with left and right sides is arranged in the middle part of the left chuck, the inner diameter of the right side part of the left chuck communicating opening is smaller than that of the left side part, and the right side part of the left chuck communicating opening is configured to be inserted into the other end of the shaft to be detected;

[0046] Left threaded stopper, which is threadedly connected to the left side part of the left chuck communicating opening.

[0047] Spring, one end of which is sleeved on the limiting ring sleeve, and the other end of which is arranged in the left chuck accommodating groove and sleeved on the left chuck;

[0048] Clamp baffle, which is fixedly connected to the right side of the spline sleeve, and a chuck avoiding groove in communication with left and right sides is arranged in the middle part of the clamp baffle, and a plurality of clamp stoppers are arranged on the clamp baffle, and the plurality of clamp stoppers limit the left chuck on the left side of the clamp baffle.

[0049] Beneficial effects:

[0050] 1. The utility model discloses a left clamp can be moved, and the distance between left and right clamps can be adjusted to adapt to the static torque test of various length shafts to be detected. During the test, the driving motor is rotated, and the static torque test is realized according to the torque sensor detection result.

[0051] 2. The utility model discloses that the left and right translation mechanism is designed, and the lead screw translation mechanism is designed to increase the translation amplitude, and be applicable to longer specification shafts to be detected. During use, the lead screw translation mechanism is used for coarse adjustment, and the left and right translation mechanism is used for pushing and clamping the shaft to be detected.

[0052] 3. The utility model discloses that when the shaft to be detected is longer, the distance between the driving part and the moving part is longer, so one or a plurality of support parts are arranged to support and guarantee the coaxial degree of the shaft to be detected and the left and right clamps.

[0053] 4. The utility model discloses that the design of the blanking mechanism can realize the automatic blanking purpose after the static torque test of the shaft to be detected is completed. DRAWINGS

[0054] Figure 1 It is a whole structure schematic view of the utility model;

[0055] Figure 2 It is a partial structure schematic view of Figure 1 ;

[0056] Figure 3 It is the front view of Figure 2 ;

[0057] Figure 4 It is the plan view of Figure 2 ;

[0058] Figure 5 It is a whole structure schematic view of the driving part of the utility model;

[0059] Figure 6 It is a whole structure schematic view of the moving part of the utility model;

[0060] Figure 7 It is a structure schematic view of the support part of the utility model;

[0061] Figure 8 It is another structure schematic view of the support part of the utility model;

[0062] Figure 9 It is the front view of the right clamp of the utility model;

[0063] Figure 10 It is the sectional view of Figure 9 ;

[0064] Figure 11 It is the sectional view of Figure 9Exploded view;

[0065] Figure 12 This is the front view of the left clamp of this utility model;

[0066] Figure 13 for Figure 12 A sectional view;

[0067] Figure 14 for Figure 12 Exploded view. Detailed Implementation

[0068] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0069] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0070] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0071] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0072] Reference Figures 1 to 6 This utility model provides a welding strength testing machine for automotive drive shafts, including a worktable, on which a drive unit 1 and a moving unit 2 are provided.

[0073] The drive unit 1 includes a motor 10 and a right clamp 20 connected to the motor shaft of the motor 10.

[0074] The moving part 2 comprises a left-right translation mechanism 30, a torque sensor 40 and a left clamp 50, the left-right translation mechanism 30 comprises a left-right translation end, the left side of the torque sensor 40 is connected with the left-right translation end through a sensor support 41, the right side of the torque sensor 40 is connected with the left clamp 50, and the left clamp 50 is coaxially arranged opposite to the right clamp 20 and is driven by the left-right translation mechanism 30 to move close to or away from the right clamp 20.

[0075] In use, one end of the to-be-detected shaft 3 is clamped on the right clamp 20, the left clamp 50 is moved to a suitable position by driving the left-right translation mechanism 30, and the other end of the to-be-detected shaft 3 is clamped by the left clamp 50. The motor 10 is driven to rotate, and the static torque test is realized according to the detection result of the torque sensor.

[0076] In an embodiment, the motor 10 is a reduction motor 10 with a speed reducer.

[0077] In an embodiment, referring to Figures 2 to 4 , Figure 6 The left-right translation mechanism 30 adopts a cylinder mechanism, the axial direction of the piston rod of the cylinder mechanism is the left-right direction, and the right end of the piston rod is fixedly connected with the sensor support 41 as the left-right translation end.

[0078] In an embodiment, referring to Figures 2 to 4 , Figure 6 The moving part 2 further comprises a lead screw translation mechanism 60, the lead screw translation mechanism 60 comprises a lead screw 61, a hand wheel 62 and a lead screw nut.

[0079] Both ends of the lead screw 61 are fixed on the workbench through bearings, and the axial direction of the lead screw 61 is the left-right direction. The hand wheel 62 is fixedly connected to the left end of the lead screw 61. The lead screw nut is rotationally connected to the lead screw 61, and the lead screw nut is fixedly connected with the left-right translation mechanism 30.

[0080] When the left-right translation mechanism 30 adopts the cylinder mechanism, the cylinder mechanism is fixedly connected to the lead screw nut.

[0081] In use, the hand wheel 62 is rotated to drive the lead screw 61 to rotate, and then drive the lead screw nut to move left and right on the lead screw 61, and finally drive the left-right translation mechanism 30 to move left and right.

[0082] The lead screw translation mechanism 60 is used to increase the translation range and is suitable for longer to-be-detected shafts 3. In use, the lead screw translation mechanism 60 is used for coarse adjustment, and the left-right translation mechanism 30 is used to push and clamp the to-be-detected shaft 3.

[0083] In an embodiment, referring to Figure 6 The lead screw translation mechanism 60 further comprises a first sliding plate 63, two slide rails 64 and a plurality of sliding blocks 65.

[0084] The first sliding plate 63 is fixedly connected with the screw nut. The first sliding plate 63 is fixedly connected with the left-right translation mechanism 30, that is, the left-right translation mechanism 30 is fixedly connected with the screw nut through the first sliding plate 63. The length direction of the slide rail 64 is the left-right direction. Two slide rails 64 are arranged on the workbench and located at the front and back sides of the screw rod 61. One or a plurality of left-right parallel sliding blocks 65 are arranged on the bottom of the front and back sides of the first sliding plate 63. The sliding blocks 65 located at the front and back sides are slidingly connected with the slide rails 64 on the same side.

[0085] In an embodiment, referring to Figure 6 , the screw translation mechanism 60 further comprises a second sliding plate 66. One or a plurality of left-right parallel sliding blocks 65 are arranged on the bottom of the front and back sides of the second sliding plate 66. The sensor support 41 is fixedly connected to the second sliding plate 66.

[0086] In an embodiment, referring to Figures 2 to 4 、 Figure 7 and Figure 8 , one or a plurality of support parts 4 are arranged between the driving part 1 and the moving part 2. The support part 4 comprises a bracket sliding plate 71, a support frame 72 and a V-shaped block 73.

[0087] One or a plurality of left-right parallel sliding blocks 65 are arranged on the bottom of the front and back sides of the bracket sliding plate 71. The support frame 72 is fixedly connected to the bracket sliding plate 71. The V-shaped block 73 is fixedly connected to the support frame 72. The V-shaped block 73 is provided with one or a plurality of V-shaped grooves 731 connected for supporting the to-be-detected shaft 3. The openings of the V-shaped grooves 731 are upward. The openings of the V-shaped grooves 731 are the same or different in size, preferably different, so as to support to-be-detected shafts 3 with different outer diameters.

[0088] In an embodiment, referring to Figure 7 , one of the one or a plurality of support parts 4 close to the moving part 2 is a moving support part. The moving support part further comprises a support connecting pressing block and a support connecting rod 74.

[0089] The support connecting pressing block comprises a lower pressing block 751 and an upper pressing block 752. The top surface of the lower pressing block 751 and the bottom surface of the upper pressing block 752 are respectively provided with semicircular grooves in communication with each other. When the upper pressing block 752 is detachably connected to the lower pressing block 751, the two semicircular grooves form a connecting rod accommodating groove. The left end of the support connecting rod 74 is fixedly connected with the sensor support 41. The support connecting rod 74 is inserted into the connecting rod accommodating groove and the right end of the support connecting rod 74 can extend out of the connecting rod accommodating groove.

[0090] When the embodiment is used, the mobile support part can be moved left and right to adjust the position by the left and right translation mechanism 30 with the sensor support 41. If the position of the mobile support part is not appropriate, the position of the mobile support part can be adjusted by loosening the upper pressing block 752 and sliding the mobile support part left and right on the slide rail 64. When the position of the mobile support part is adjusted, the support connecting rod 74 slides in the connecting rod accommodating groove, and after the position is determined, the upper pressing block 752 is locked on the lower pressing block 751. When the upper and lower pressing blocks are locked, a fastener such as a bolt or a screw can be used to lock or loosen the two.

[0091] In an embodiment, with reference to Figure 8 , one or more support parts 4 away from the mobile part 2 are used as fixed support parts, and the fixed support parts 4 further include a locking plate 76 and an adjustable locking handle 77.

[0092] The locking plate 76 is an L-shaped plate, the vertical section of the locking plate 76 is fixedly connected to the bracket slide plate 71, and the horizontal section of the locking plate 76 is provided with a locking through hole extending upward and downward. The adjustable locking handle 77 is installed on the locking plate 76, the locking shaft 771 of the adjustable locking handle 77 is in an upward and downward direction, the locking shaft 771 faces the locking through hole and can pass through the locking through hole and abut against the workbench.

[0093] For other support parts 4 not connected to the mobile part 2, the position can be adjusted by sliding left and right on the slide rail 64, and the adjustable locking handle 77 can be locked or loosened.

[0094] In an embodiment, with reference to Figures 2 to 4 , Figure 7 and Figure 8 , the automobile transmission shaft welding strength testing machine further includes a blanking mechanism 5, and the blanking mechanism 5 includes a blanking slide plate 81, one or more blanking cylinders 82, and one or more blanking plates 83.

[0095] The blanking slide plate 81 is fixed to the workbench and located in front of the driving part 1 and the mobile part 2, and the surface of the blanking slide plate 81 is an inclined surface inclined downward from back to front.

[0096] The number of blanking cylinders 82 and the number of blanking plates 83 are consistent with the number of support parts 4. One blanking cylinder 82 and one blanking plate 83 are provided on each support part 4.

[0097] The blanking cylinder 82 is installed on the support frame 72, and the piston rod of the blanking cylinder 82 is axially upward and downward. The blanking plate 83 is fixedly connected to the piston rod of the blanking cylinder 82, and is driven by the blanking cylinder 82 to move up and down. The blanking plate 83 is located at the side of the V-shaped block 73, and the top surface of the blanking plate 83 is an inclined surface that is inclined downward from back to front. The top surface of the blanking plate 83 is provided with a V-shaped groove 831 for supporting the shaft 3 to be tested. The opening of the V-shaped groove 831 is upward, the rear side groove surface of the V-shaped groove 831 extends to the rear side of the blanking plate 83, the front side groove surface of the V-shaped groove 831 does not exceed the front side groove surface of the V-shaped groove 731 at the frontmost side of the side, and the front section of the blanking plate 83 extends above the rear end of the blanking slide plate 81.

[0098] The embodiment is used to automatically blank after the shaft 3 to be tested is completed static torque test. Specifically, taking the V-shaped block 73 with two V-shaped grooves 731 as an example, referring to Figure 2 , the shaft 3 to be tested is supported on the rear V-shaped groove 731. When blanking is needed, referring to Figure 2 , Figure 7 and Figure 8 , the blanking cylinder 82 is driven to drive the blanking plate 83 to rise, the shaft 3 to be tested on the V-shaped block 73 is lifted to the highest position of the rear V-shaped groove 731, and then the shaft 3 to be tested rolls on the groove surface of the front V-shaped groove 731 adjacent to the rear V-shaped groove 731 from the rear upper side to the front lower side and enters the front V-shaped groove 731. At this time, the shaft 3 to be tested is still limited in the V-shaped groove 831. The blanking plate 83 is continuously raised, the shaft 3 to be tested is lifted to the highest position of the front V-shaped groove 731, and then the shaft 3 to be tested slides out of the front V-shaped groove 731 and slides along the inclined surface of the blanking plate 83 to the blanking slide plate 81 and is blanked through the blanking slide plate 81.

[0099] In an embodiment, the blanking slide plate 81 is a U-shaped blanking slide plate, the plate surface in the middle is an inclined surface, and the plate surfaces on both sides can limit the shaft from sliding out from the left and right sides.

[0100] In an embodiment, the blanking plate 83 is a U-shaped blanking plate, so as to reduce the weight of the blanking plate 83.

[0101] In an embodiment, referring to Figure 1 , the automobile transmission shaft welding strength testing machine further comprises a protective cover 6, the protective cover 6 is arranged outside the workbench, the protective cover 6 is provided with an escape opening in communication between the inside and the outside, and the front side of the blanking slide plate 81 extends out of the escape opening.

[0102] Preferably, the protective cover 6 is provided with a safety door, and the safety door is located on the opposite side of the blanking slide plate 81. The safety door is preferably two and is slidably connected to the workbench by using double-center straight slide rails.

[0103] In an embodiment, the right clamp 20 can adopt any clamp for clamping shafts in the prior art.

[0104] Preferably, the right clamp 20 is designed as follows:

[0105] With reference to Figures 9 to 11 , the right clamp 20 comprises a right sleeve 21, a right flange 22, a right baffle 23, a right chuck 24 and a right threaded stopper 25.

[0106] The right sleeve 21 is fixedly connected to the motor shaft of the motor 10. The right flange 22 is fixedly connected to the right sleeve 21 and located at the left side of the right sleeve 21. A right chuck accommodating groove is excavated on the right flange 22 and communicates left and right. The right chuck accommodating groove is a polygonal accommodating groove. A locking hole 221 is further provided on the left side of the right flange 22 and communicates the inside and outside of the right chuck accommodating groove. The axial direction of the locking hole 221 is perpendicular to the axial direction of the right chuck accommodating groove. That is, the axial direction of the locking hole 221 is the radial direction of the right chuck accommodating groove. The number of locking holes 221 can be several, and the several locking holes 221 are evenly arranged along the left side of the right flange 22.

[0107] The right baffle 23 is arranged in the right sleeve 21 and located at the right side of the motor shaft of the motor 10.

[0108] The right side outer surface of the right chuck 24 is configured as a polygonal surface matching the right chuck accommodating groove. The right chuck 24 is detachably fixed in the right chuck accommodating groove. When the two are fixed, the locking hole 221 can be threadedly connected and locked by a locking member such as a bolt or a screw, and the locking member abuts against the right chuck 24 to achieve detachability.

[0109] A right chuck communicating hole is excavated in the middle part of the right chuck 24 and communicates left and right. The inner diameter of the left side part of the right chuck communicating hole is smaller than that of the right side part. The left side part of the right chuck communicating hole is configured to be inserted into one end of the shaft to be detected. The right threaded stopper 25 is threadedly connected to the right side part of the right chuck communicating hole.

[0110] In an embodiment, the left clamp 50 can adopt any clamp for clamping shafts in the prior art.

[0111] Preferably, the left clamp 50 is designed as follows:

[0112] With reference to Figures 12 to 14 , the left clamp 50 comprises a transition disc 51, a spline sleeve 52, a movable spline 53, a left chuck 54, a left threaded stopper 55, a spring 56 and a clamp baffle 57.

[0113] The transition disc 51 is fixedly connected to the right side of the torque sensor 40, and a limiting ring sleeve 511 is integrally arranged in the middle of the right disc surface of the transition disc 51. The spline sleeve 52 is fixedly connected to the transition disc 51 and located at the right side of the transition disc 51, and the limiting ring sleeve 511 is located in the spline sleeve 52. The movable spline 53 is located in the spline sleeve 52 and can move along the axial direction of the spline sleeve 52. Of course, a plurality of key grooves are arranged in the spline sleeve 52 along the left-right direction, and a plurality of sliding protrusions are arranged on the surface of the movable spline 53 along the left-right direction, and the sliding protrusions slide in the key grooves to realize the sliding of the movable spline 53 in the spline sleeve 52 along the left-right direction. The middle part of the movable spline 53 is excavated to form a left chuck accommodating groove which is communicated with the left and right sides and is a polygonal accommodating groove.

[0114] The left side outer surface of the left chuck 54 is configured as a polygonal surface matched with the left chuck accommodating groove, the left chuck 54 is detachably fixed in the left chuck accommodating groove, the middle part of the left chuck 54 is excavated to form a left chuck communicating port which is communicated with the left and right sides, the inner diameter of the right side part of the left chuck communicating port is smaller than that of the left side part, and the right side part of the left chuck communicating port is configured to be inserted into the other end of the shaft to be detected 3. The left threaded stopper 55 is threadedly connected to the left side part of the left chuck communicating port.

[0115] One end of the spring 56 is sleeved on the limiting ring sleeve 511, and the other end of the spring 56 is sleeved on the left chuck 54 and located in the left chuck accommodating groove.

[0116] The clamp baffle 57 is fixedly connected to the right side of the spline sleeve 52, the middle part of the clamp baffle 57 is excavated to form a chuck avoiding groove which is communicated with the left and right sides, a plurality of clamp stoppers 571 are arranged on the clamp baffle 57, and the left chuck 54 is limited on the left side of the clamp baffle 57 by the plurality of clamp stoppers 571.

[0117] After the left clamp 50 in the embodiment is designed as described above, the left clamp 50 has a certain elastic deformation capacity, when the other end of the shaft to be detected 3 is inserted into the left chuck 54, the left chuck 54 can continue to stretch into the left, so that the spring 56 elastically deforms to give the shaft to be detected 3 a right reaction force, so that the shaft to be detected 3 is clamped more stably and reliably.

[0118] In an embodiment, the clamp stopper 571 is a limiting bolt or screw. A plurality of clamp limiting holes are arranged on the clamp baffle 57 in the circumferential direction, the clamp limiting holes are communicated between the inside and outside of the clamp baffle 57, the axial direction of the clamp limiting hole is the radial direction of the clamp baffle 57, and the limiting bolt or screw is threadedly connected to the clamp limiting hole and extends into the chuck avoiding groove to limit the right side surface of the left chuck 54.

[0119] The preferred embodiments of the utility model have been described in detail above, but it should be understood that after reading the above teaching content of the utility model, those skilled in the art can make various changes or modifications to the utility model. These equivalent forms also fall within the scope defined by the claims attached to the present application.

Claims

1. A welding strength testing machine for automotive drive shafts, comprising a worktable, characterized in that, The workbench is equipped with: A drive unit, the drive unit including a motor and a right clamp connected to the motor shaft; The moving part includes a left-right translation mechanism, a torque sensor, and a left clamp. The left-right translation mechanism includes a left-right translation end. The left side of the torque sensor is connected to the left-right translation end through a sensor support. The right side of the torque sensor is connected to the left clamp. The left clamp and the right clamp are coaxially opposite to each other. The left-right translation mechanism drives the left clamp to move closer to or away from the right clamp.

2. The automotive drive shaft welding strength testing machine as described in claim 1, characterized in that, The motor is a geared motor with a speed reducer; And / or, the left and right translation mechanism adopts a cylinder mechanism, the piston rod of the cylinder mechanism is axial in the left and right direction, and the right end of the piston rod is fixedly connected to the sensor support as the left and right translation end.

3. The automotive drive shaft welding strength testing machine as described in claim 1, characterized in that, The moving part further includes a lead screw translation mechanism, which includes: A lead screw, the two ends of which are fixed to the worktable by bearings, and the axis of the lead screw is in the left-right direction; A handwheel, which is fixedly connected to the left end of the lead screw; A lead screw nut is rotatably connected to the lead screw and fixedly connected to the left and right translation mechanism.

4. The automotive drive shaft welding strength testing machine as described in claim 3, characterized in that, The lead screw translation mechanism also includes: A first sliding plate, the first sliding plate being fixedly connected to the lead screw nut, and the left and right translation mechanism being fixedly connected to the first sliding plate; Two slide rails, the length direction of the slide rails is left and right, and the two slide rails are respectively set on the worktable and located on the front and rear sides of the lead screw; A plurality of sliders are respectively disposed on the bottom of the front and rear sides of the first slide plate, and the sliders located on the front and rear sides are slidably connected to the slide rail on the same side. The second slide plate has sliders on its front and rear bottom sides, and the sensor support is fixedly connected to the second slide plate.

5. The automotive driveshaft welding strength testing machine as described in claim 4, characterized in that, One or more support parts are provided between the driving part and the moving part, and the support part includes: The bracket slide plate, and the sliders are also provided on the bottom of the front and rear sides of the bracket slide plate; A support frame, which is fixedly connected to the bracket slide plate; V-block, the V-block is fixedly connected to the support frame, the V-block is provided with one or more connected V-grooves for supporting the shaft to be tested, and the opening size of each V-groove is the same or different.

6. The automotive driveshaft welding strength testing machine as described in claim 5, characterized in that, One of the one or more support portions closest to the movable portion is designated as a movable support portion, and the movable support portion further includes: A supporting connecting block is provided, which includes a lower pressing block and an upper pressing block. The top surface of the lower pressing block and the bottom surface of the upper pressing block are respectively provided with semi-circular grooves that are connected from left to right. When the upper pressing block is detachably connected to the lower pressing block, the two semi-circular grooves form a connecting rod receiving groove. A support connecting rod is provided, the left end of which is fixed to the sensor support, the support connecting rod is inserted into the connecting rod receiving groove and the right end can extend out of the connecting rod receiving groove.

7. The automotive driveshaft welding strength testing machine as described in claim 5, characterized in that, One or more of the support portions, the support portion furthest from the movable portion, serves as a fixed support portion, the fixed support portion further comprising: A locking plate, which is an L-shaped plate, is fixedly connected to the bracket slide plate in the vertical section, and a locking through hole is provided in the horizontal section of the locking plate. An adjustable locking handle is mounted on the locking plate. The locking shaft of the adjustable locking handle is axially oriented vertically, and the locking shaft faces the locking through hole and can pass through the locking through hole to abut against the worktable.

8. The automotive drive shaft welding strength testing machine as described in claim 5, characterized in that, The automotive drive shaft welding strength testing machine also includes a feeding mechanism, which comprises: The material feeding slide is fixed on the workbench and located in front of the drive unit and the moving unit. The surface of the material feeding slide is an inclined surface that slopes downward from back to front. One or more feeding cylinders, the feeding cylinders are mounted on the support frame, and the piston rod of the feeding cylinder is axially in the up-down direction; One or more feeding plates are provided, the feeding plates are fixedly connected to the piston rod of the feeding cylinder, the feeding plates are located on the side of the V-block, the top surface of the feeding plates is an inclined surface that slopes downward from back to front, the top surface of the feeding plates is provided with a V-shaped groove for supporting the shaft to be tested, the rear side groove surface of the V-shaped groove extends to the rear side of the feeding plates, the front side groove surface of the V-shaped groove does not exceed the front side groove surface of the foremost V-shaped groove on the side, and the front section of the feeding plates extends into the rear end of the feeding slide plate.

9. The automotive driveshaft welding strength testing machine as described in claim 8, characterized in that, The automotive drive shaft welding strength testing machine also includes a protective cover, which is installed outside the workbench. The protective cover has an inner and outer clearance opening, and the front side of the unloading slide plate extends out of the clearance opening.

10. The automotive driveshaft welding strength testing machine as described in any one of claims 1 to 9, characterized in that, The right clamp includes: Right bushing, which is fixedly connected to the motor shaft of the motor; A right flange is fixedly connected to the right bushing. A right chuck receiving groove with left and right communication is provided on the right flange. The right chuck receiving groove is a polygonal receiving groove. A locking hole with the inside and outside of the right chuck receiving groove is also provided on the left side of the right flange. The axis of the locking hole is perpendicular to the axis of the right chuck receiving groove. A right baffle plate, wherein the right baffle plate is disposed inside the right bushing and located on the right side of the motor shaft of the motor; The right chuck has a right outer surface configured as a polygonal surface that matches the right chuck receiving groove. The right chuck is detachably fixed in the right chuck receiving groove. A right chuck connecting port is provided in the middle of the right chuck, and the inner diameter of the left part of the right chuck connecting port is smaller than the inner diameter of the right part. The left part of the right chuck connecting port is configured to insert one end of the receiving detection shaft. A right-threaded stop block, which is threadedly connected to the right side portion of the right chuck communication port; And / or, the left clamp includes: A transition plate is fixedly connected to the right side of the torque sensor, and a limit ring is integrally provided in the middle of the right side surface of the transition plate; The spline sleeve is fixedly connected to the transition plate and located on the right side of the transition plate, and the limiting ring sleeve is located inside the spline sleeve; A movable spline is located inside the spline sleeve and can move along the axial direction of the spline sleeve. A left collet receiving groove with left and right communication is provided in the middle of the movable spline. The left collet receiving groove is a polygonal receiving groove. The left chuck has a left outer surface configured as a polygonal surface that matches the left chuck receiving groove. The left chuck is detachably fixed in the left chuck receiving groove. A left chuck connecting port is provided in the middle of the left chuck, and the inner diameter of the right part of the left chuck connecting port is smaller than the inner diameter of the left part. The right part of the left chuck connecting port is configured to insert the other end of the receiving detection shaft. A left threaded stop block, which is threadedly connected to the left side portion of the left chuck communication port; A spring, one end of which is sleeved on the limiting ring sleeve, and the other end of which is located in the left clamp receiving groove and sleeved on the left clamp; A clamping baffle is fixedly connected to the right side of the spline sleeve. A chuck clearance groove with left and right communication is carved in the middle of the clamping baffle. Several clamping blocks are provided on the clamping baffle, and the several clamping blocks restrict the left chuck on the left side of the clamping baffle.

Images