Lead screw motor push-pull force detection equipment

Abstract

The utility model discloses a lead screw motor push-pull force detection device, which comprises a machine cabinet table, a power-on load thrust test mechanism, a power-loss load gap detection mechanism, linear modules and a work fixture, and is characterized in that the linear modules are distributed at the top of the machine cabinet table; the two sides of the upper middle part of each linear module are respectively provided with a power-loss on-load gap detection mechanism and a power-on on-load thrust test mechanism. According to the utility model, the structure design is reasonable, whether the no-load and on-load gap range of the screw motor is in the design range can be determined, and the electrified on-load thrust test is carried out on the screw motor so as to load and obtain the related test data of the product; by means of the linear module and the tool clamp connected with the linear module, products can be sequentially and orderly placed at all the stations, meanwhile, the two-dimensional code scanning position and the laser marking position are arranged, product information can be recognized, qualified marking is facilitated, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a push-pull force detection device for a lead screw motor, belonging to the field of lead screw motor detection devices. Background Art

[0002] The lead screw motor generates rotation by the interaction of a magnetic rotor iron core with a pulsed electromagnetic field generated by a stator. The lead screw motor converts rotational motion into linear motion inside the motor. Existing lead screw motor detection devices have a single detection station, which cannot meet the requirements of multiple detection processes and has low efficiency. Therefore, a push-pull force detection device for a lead screw motor is proposed for the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a push-pull force detection device for a lead screw motor to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions. A push-pull force detection device for a lead screw motor includes a machine countertop, a power-on with load thrust test mechanism, a power-off with load clearance detection mechanism, a linear module, and a working fixture. The top of the machine countertop is distributively installed with linear modules, and a power-off with load clearance detection mechanism and a power-on with load thrust test mechanism are respectively arranged on both sides of the middle part of each linear module.

[0005] The power-on with load thrust test mechanism includes a first cylinder and a weight placement plate. The push rod end of the first cylinder is fixedly connected to the corresponding position at the bottom of the weight placement plate. Four first guide rods are respectively in sliding contact with the weight placement plate through guide holes at the four corners of the weight placement plate.

[0006] The power-off with load clearance detection mechanism includes a second cylinder, a pulling rope, a guide pulley, and a gravity acting plate. One end of the pulling rope is installed at the push rod end of the second cylinder, and the other end of the pulling rope is fixedly connected to the middle part of the gravity acting plate. Part of the guide pulley is in contact with part of the pulling rope.

[0007] Further, the linear module is a linear motor, and a tooling fixture is installed at the traction structure of the linear module.

[0008] Further, a loading / unloading position and a laser marking machine are respectively arranged at the front and rear ends of the linear module, and the marking output end of the laser marking machine is set as a laser marking position.

[0009] Further, a loading / unloading position is arranged on the part of the linear module between the power-off with load clearance detection mechanism and the loading / unloading position.

[0010] Further, the bottom end of the first cylinder is installed on the top of the first download plate, and the first download plate and the first upload plate are fixedly connected by four distributed first guide rods.

[0011] Further, the bottom end of the second cylinder is installed at one end of the top of the second downloading plate, and the second downloading plate and the second uploading plate are fixedly connected by four second guide rods distributed therebetween. The second guide rods are in sliding contact with the guide hole structures at each corner of the gravity action plate.

[0012] Further, the guide wheel is installed on one side of the top of the second uploading plate, and round holes are provided at the middle positions of the tops of the second uploading plate and the first uploading plate.

[0013] Further, the machine counter is further configured with a touch screen, a PLC, an industrial control computer, and a data acquisition card for signal acquisition.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] It is possible to determine whether the gap range of the lead screw motor under no-load and loaded conditions is within the design range, and at the same time, perform a power-on loaded thrust test on the lead screw motor to obtain relevant test data of the product by loading.

[0016] By means of the linear module and the tooling fixture connected thereto, it is beneficial to sequentially and orderly place the products at each station. At the same time, a two-dimensional code scanning position and a laser marking position are configured to identify product information and perform qualified marking, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a top view of the overall structure of the present utility model;

[0019] Figure 2 It is a three-dimensional view of the overall partial mechanism of the present utility model;

[0020] Figure 3 It is a schematic connection structure diagram of the power-off loaded gap detection mechanism of the present utility model;

[0021] Figure 4 It is a schematic connection structure diagram of the power-on loaded thrust test mechanism of the present utility model.

[0022] In the figure: 1, machine counter; 2, loading and unloading position; 3, QR code scanning position; 4, power-on with load thrust testing mechanism; 41, first cylinder; 42, weight placing plate; 43, first guide rod; 44, first upper loading plate; 45, first lower loading plate; 5, power-off with load clearance detection mechanism; 51, second cylinder; 52, pulling rope; 53, guide wheel; 54, second upper loading plate; 55, gravity acting plate; 56, second guide rod; 57, second lower loading plate; 6, laser marking position; 7, laser marking machine; 8, linear module; 9, tooling fixture. Detailed implementation manners

[0023] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0026] Please refer to Figures 1-4 As shown, a screw motor push-pull force detection device includes a machine counter 1, a power-on with load thrust testing mechanism 4, a power-off with load clearance detection mechanism 5, a linear module 8, and a working fixture. The top of the machine counter 1 is distributively installed with linear modules 8, and on each side of the middle part of each linear module 8, there are respectively arranged a power-off with load clearance detection mechanism 5 and a power-on with load thrust testing mechanism 4;

[0027] The power-on with load thrust testing mechanism 4 includes a first cylinder 41 and a weight placing plate 42. The push rod end of the first cylinder 41 is fixedly connected to the corresponding position at the bottom of the weight placing plate 42. At the four corners of the weight placing plate 42, they are respectively in sliding contact with four first guide rods 43 through guide holes;

[0028] The power-off load-bearing clearance detection mechanism 5 includes a second cylinder 51, a tension rope 52, a guide pulley 53, and a gravity action plate 55. One end of the tension rope 52 is installed at the push rod end of the second cylinder 51, and the other end of the tension rope 52 is fixedly connected to the middle of the gravity action plate 55. Part of the guide pulley 53 is in contact with part of the tension rope 52.

[0029] The linear module 8 is a linear motor, and a tooling fixture 9 is installed at the traction structure of the linear module 8. Upper and lower loading positions 2 and a laser marking machine 7 are respectively arranged at the front and rear ends of the linear module 8, and the marking output end of the laser marking machine 7 is set as a laser marking position 6.

[0030] There is a part of the linear module 8 between the power-off load-bearing clearance detection mechanism 5 and the upper and lower loading positions 2; the bottom end of the first cylinder 41 is installed on the top of the first lower loading plate 45, and the first lower loading plate 45 and the first upper loading plate 44 are fixedly connected by four distributed first guide rods 43.

[0031] The bottom end of the second cylinder 51 is installed at one end of the top of the second lower loading plate 57, and the second lower loading plate 57 and the second upper loading plate 54 are fixedly connected by four distributed second guide rods 56. The second guide rods 56 are in sliding contact with the guide hole structures at each corner of the gravity action plate 55.

[0032] The guide pulley 53 is installed on one side of the top of the second upper loading plate 54, and round holes are provided at the middle positions of the tops of the second upper loading plate 54 and the first upper loading plate 44.

[0033] When the present utility model is in use, the product is manually loaded onto the tooling fixture 9. After manual clamping, the motor returns to the zero position; as Figure 3 shown, it is moved to the position of the power-off load-bearing clearance detection mechanism 5 through the linear module 8. After the motor slider moves to the predetermined position, the motor is powered off. Under the condition that the motor is not powered on, a fixed force is applied in the reverse direction in two directions to the slider to eliminate the clearance between the lead screw and the nut, (judgment; no-load and load-bearing clearances, whether the range is within the design range), as Figure 4 shown, after the power-off clearance detection is completed, it is moved to the power-on load-bearing thrust test mechanism 4. The motor returns to the zero position again. After the thrust detection station arrives, a load is applied to the product to test relevant electrical parameters. After the test is completed, the qualified motor returns to the zero position again. Whether the Hall signal repeatability is qualified is judged through the zero position displacement. Finally, after all the test data pass, the slider rises to the factory position, laser marking is carried out, and after the marking is completed, it retreats to the two-dimensional code scanning position for code scanning confirmation. After the two-dimensional code information matching passes, the corresponding qualified data is stored; the unqualified products are directly taken off the production line and returned to the initial position without marking;

[0034] The functions included in a single station are as follows:

[0035] 1. Eliminate the lead screw clearance when the motor is not powered on; 2. Measure the relative clearance in both directions under no-load and loaded conditions to meet the product design requirements; 3. The maximum working stroke of the lead screw motor; 4. Test the rated current of the motor under loaded conditions and check if the displacement meets the requirements. The real-time curve during the motor operation can be displayed, and it can be judged whether the peak current and effective current of the motor are within the range during the operation; 5. Ensure that the slider stays at the position required by the factory after the motor test; 6. Laser marking, and confirm by QR code scanning after marking; 7. Store the inspection data of qualified products corresponding to the QR code.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the same elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A screw motor push-pull force detection device, characterized in that: It comprises a machine cabinet (1), a power-on load thrust test mechanism (4), a power-off load gap detection mechanism (5), a linear module (8) and a working fixture, wherein the linear modules (8) are distributed and installed on the top of the machine cabinet (1), and each linear module (8) is provided with a power-off load gap detection mechanism (5) and a power-on load thrust test mechanism (4) on both sides of the upper middle part; The energized loaded thrust test mechanism (4) comprises a first cylinder (41) and a weight placement plate (42), wherein a push rod end of the first cylinder (41) is fixedly connected to a corresponding position at the bottom of the weight placement plate (42), and four corners of the weight placement plate (42) are respectively in sliding contact with four first guide rods (43) through guide holes; The power-off load gap detection mechanism (5) comprises a second cylinder (51), a tension rope (52), a guide wheel (53) and a gravity plate (55); one end of the tension rope (52) is mounted on the push rod end of the second cylinder (51); the other end of the tension rope (52) is fixedly connected to the middle of the gravity plate (55); and a portion of the guide wheel (53) and a portion of the tension rope (52) are in contact with each other.

2. A screw motor push-pull force detection device according to claim 1, characterized in that: The linear module (8) is a linear motor, and a tooling fixture (9) is installed at the traction structure of the linear module (8).

3. A screw motor push-pull force detection device according to claim 1, characterized in that: The front and rear ends of the linear module (8) are respectively provided with upper and lower material positions (2) and a laser marking machine (7), and the marking output end located on the laser marking machine (7) is set as a laser marking position (6).

4. The push-pull force detection device of a screw motor according to claim 1, characterized in that: The linear module (8) between the power-off load gap detection mechanism (5) and the upper and lower material positions (2) is provided with upper and lower material positions (2).

5. The push-pull force detection device of a screw motor according to claim 1, characterized in that: The bottom end of the first cylinder (41) is mounted on the top of the first download plate (45), and the first download plate (45) and the first upper loading plate (44) are fixedly connected via four distributed first guide rods (43).

6. The push-pull force detection device of a screw motor according to claim 1, characterized in that: The bottom end of the second cylinder (51) is mounted on the top end of the second download plate (57), and the second download plate (57) and the second upper loading plate (54) are fixedly connected via four distributed second guide rods (56), and the second guide rods (56) are in sliding contact with the guide hole structure located at each corner of the gravity action plate (55).

7. The push-pull force detection device of a screw motor according to claim 1, characterized in that: The guide wheel (53) is mounted on one side of the top of the second upper loading plate (54), and circular holes are provided at the middle position of the top of the second upper loading plate (54) and the middle position of the top of the first upper loading plate (44).

8. The push-pull force detection device of a screw motor according to claim 1, characterized in that: The machine counter (1) is also equipped with a touch screen, a PLC, an industrial computer and an acquisition card for collecting signals.

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