Dimension testing fixture for first shaft of transmission

Abstract

The utility model relates to the technical field of transmission shaft detection, in particular to a size detection tool for a transmission shaft, which comprises a base, a round hole is arranged on the base, a transverse sliding block is arranged on the base, and a limiting clamping plate is vertically connected onto the transverse sliding block. A vertical plate is vertically arranged on the rear side of the base, a blind hole is formed in the vertical plate, a first ball cavity is formed in the front end of the moving rod, a first ball is matched in the first ball cavity, an extrusion plate is fixedly connected in the blind hole through a spring, a pressure sensor is fixedly arranged on the side face, facing the moving rod, of the extrusion plate, and the pressure sensor is in signal connection with the controller. The controller transmits signals to the indicator lamp, and the pressure sensor makes contact with the moving rod. According to the application, the shaft end of the first shaft of the transmission is inserted into the circular hole and is rotated for one circle, so that whether the mandrel of the first shaft of the transmission has problems can be quickly known, the detection efficiency of the mandrel of the first shaft of the transmission can be improved, and meanwhile, the time and physical power consumed by a worker for detecting by using a vernier caliper are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of the detection of the first shaft of a transmission, and specifically relates to a dimension measuring tool for the first shaft of a transmission. Background Art

[0002] An automotive transmission is a speed-changing device used to coordinate the speed of an engine and the actual driving speed of wheels, and is used to bring the best performance of the engine into play; during the driving process of an automobile, the transmission can generate different speed ratios between the engine and the wheels, and by shifting gears, the engine can work in its best power performance state; the transmission is composed of a speed-changing transmission mechanism and a control mechanism, and the first shaft of the transmission is a part of the transmission mechanism.

[0003] Among them, certain errors will occur during the production and processing of the first shaft of the transmission, and the errors mainly occur on the mandrel of the first shaft of the transmission. The dimensional errors on the mandrel are likely to cause eccentricity when the mandrel rotates, thereby affecting its normal use. Therefore, it is necessary to detect the produced mandrel.

[0004] Among them, the existing dimensional measuring tool for the mandrel is a vernier caliper. Although this method can measure the dimensions of the mandrel, it can often only measure one position at a time. Therefore, when detecting, if you want to perform a full-range detection of the mandrel, multiple measurements are required, which is time-consuming and laborious for the staff. Content of the Utility Model

[0005] The utility model provides a dimension measuring tool for the first shaft of a transmission to solve the defects in the prior art.

[0006] The utility model is realized through the following technical solutions:

[0007] A dimension measuring tool for the first shaft of a transmission includes a fixedly arranged base. A round hole is provided on the base. Horizontal sliders are arranged on the left and right sides of the base. The horizontal sliders can be driven by a driving device to move and stop. A limiting clamping plate at the same height as the transition shaft is vertically connected to the horizontal sliders; a vertical plate is vertically arranged at the rear of the base. A plurality of longitudinal blind holes are provided in the vertical plate. The blind holes are arranged along the height direction of the mandrel. A slider is slidably matched in the blind hole. A moving rod is fixedly connected to the slider. A first ball cavity is provided at the front end of the moving rod. A first ball is fitted in the first ball cavity. An extrusion plate is fixedly connected in the blind hole through a spring. A pressure sensor is fixedly arranged on the side surface of the extrusion plate facing the moving rod. The pressure sensor is in signal connection with a controller. The controller is in signal transmission with an indicator light. The pressure sensor is in contact with the moving rod.

[0008] When this application is in use, insert the shaft end of the first shaft of the transmission into the round hole, and then move the horizontal sliders on both sides. Stop moving and keep the horizontal sliders stationary after the inner wall of the limit clamping plate fits with the transition shaft of the first shaft of the transmission. At this moment, the first ball contacts the outer wall of the first shaft of the transmission without being pressed, and then rotate the first shaft of the transmission along the axis of the first shaft of the transmission, so that the ball always contacts the outer wall of the core shaft. When there are protrusions or bends on the outer wall of the core shaft, the corresponding moving rod will move towards the pressure sensor, and the pressure sensor is pressed and transmits a signal to the controller. The controller transmits the signal to the indicator light, and the indicator light lights up, indicating a problem. Since multiple moving rods are provided and arranged along the height direction of the core shaft, the entire core shaft can be measured, thus improving the detection efficiency.

[0009] Preferably, a plurality of screw holes are vertically formed in the vertical plate, and screws are threadedly engaged in the screw holes. The blind holes are arranged along the length direction of the screws. Thus, the length of the core shaft can be increased, decreased or the position of the ball can be changed as needed, thereby increasing the scope of use of the device.

[0010] Preferably, a longitudinal slideway is longitudinally arranged on the base, a longitudinal slider is slidably engaged on the longitudinal slideway, a screw hole is formed in the longitudinal slider, a longitudinal lead screw is threadedly engaged in the screw hole, a first vertical rod is vertically connected to the longitudinal slider, and the first vertical rod is parallel to and fixedly connected to the vertical plate. Rotate the longitudinal lead screw, the rotation of the longitudinal lead screw can drive the movement of the longitudinal slider, and then drive the movement of the first vertical rod. The vertical plate is driven to move through the first vertical rod, and the distance between the ball and the core shaft is adjusted, so as to adapt to core shafts of different diameters, and the scope of use is improved again.

[0011] Preferably, the driving device includes a horizontal lead screw, a screw hole is horizontally formed in the horizontal slider, the horizontal lead screw passes through the screw hole and is threadedly engaged with the screw hole, a second vertical rod is vertically connected to the top surface of the horizontal slider, and the second vertical rod is parallel to and fixedly connected to the limit clamping plate. Rotate the horizontal lead screw, and the rotation of the horizontal lead screw can drive the movement of the horizontal slider, and then drive the movement of the limit clamping plate.

[0012] Preferably, the round hole is a tapered structure with a wider upper part and a narrower lower part, and a second ball cavity is provided on the inner wall of the bottom surface of the round hole, and a second ball is provided in the second ball cavity. The round hole being a tapered structure with a wider upper part and a narrower lower part can adapt to the shaft ends of the first shafts of transmissions with different diameters, and the second ball can reduce the friction between the ball and the round hole.

[0013] Preferably, support and strengthening ribs are fixedly connected between the horizontal slider and the second vertical rod, and between the longitudinal slider and the first vertical rod.

[0014] The beneficial effects of the present utility model are as follows: By inserting the shaft end of the first shaft of the transmission into the round hole and rotating it for one week, it is possible to quickly determine whether there is a problem with the core shaft of the first shaft of the transmission, thereby improving the detection efficiency of the core shaft of the first shaft of the transmission and saving the time and physical effort consumed by the staff for detection with a vernier caliper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is Figure 1 a schematic view in the direction A of

[0018] Figure 3 is Figure 2 a partial enlarged view I of

[0019] As shown in the figure:

[0020] 1. Base, 2. Round hole, 3. Transverse slider, 4. Limit clamping plate, 5. Vertical plate, 6. Blind hole, 7. Moving rod, 8. First ball, 9. Spring, 10. Pressure sensor, 11. Screw rod, 12. Transverse lead screw, 13. Second vertical rod, 14. First vertical rod, 15. Second ball, 16. Longitudinal slider, 17. Support reinforcing rib, 18. Clamping plate, 19. Core shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0022] A dimension measuring tool for the first shaft of a transmission, as Figures 1 - 3As shown in the figure. It includes a fixed base 1, a round hole 2 is provided on the base 1, horizontal sliders 3 are provided on the left and right sides of the base 1, and the horizontal sliders 3 can be driven by a driving device to move and stop. A limiting clamping plate 4 at the same height as the transition shaft is vertically connected to the horizontal slider 3. The driving device includes a horizontal lead screw 12. A threaded hole is horizontally provided on the horizontal slider 3. The horizontal lead screw 12 passes through the threaded hole and is in threaded cooperation with the threaded hole. A second vertical rod 13 is vertically connected to the top surface of the horizontal slider 3. The second vertical rod 13 is parallel and fixedly connected to the limiting clamping plate 4.

[0023] A vertical plate 5 is vertically provided at the rear side of the base 1. A plurality of threaded holes are vertically provided in the vertical plate 5. Screws 11 are in threaded cooperation with the threaded holes. A blind hole 6 is provided along the length direction of the screw 11. The blind hole 6 is provided along the height direction of the core shaft 19. A slider is slidably fitted in the blind hole 6. A moving rod 7 is fixedly connected to the slider. A first ball 8 cavity is provided at the front end of the moving rod 7. A first ball 8 is fitted in the first ball 8 cavity. A pressing plate is fixedly connected to the blind hole 6 through a spring 9. A pressure sensor 10 is fixedly provided on the side surface of the pressing plate facing the moving rod 7. A clamping plate 18 is vertically connected to the inner wall of the blind hole 6. The clamping plate 18 contacts the pressing plate and is located on the side of the pressing plate facing the moving rod 7. The pressure sensor 10 is signal-connected to the controller. The controller transmits signals to the indicator light. The pressure sensor 10 contacts the moving rod 7.

[0024] When this application is in use, the shaft end of the first shaft of the transmission is inserted into the round hole 2, and then the horizontal lead screw 12 is rotated. The rotation of the horizontal lead screw 12 can drive the movement of the horizontal slider 3, and then drive the movement of the limiting clamping plate 4. After the inner wall of the limiting clamping plate 4 fits with the transition shaft of the first shaft of the transmission, stop the movement and keep the horizontal slider 3 stationary. At this moment, the first ball 8 contacts the outer wall of the first shaft of the transmission and is not pressed. Then, rotate the first shaft of the transmission along the axis of the first shaft of the transmission, so that the ball always contacts the outer wall of the core shaft 19. When there are protrusions or bends on the outer wall of the core shaft 19, the corresponding moving rod 7 will move towards the pressure sensor 10. The pressure sensor 10 is pressed and transmits a signal to the controller. The controller transmits the signal to the indicator light, and the indicator light lights up, indicating that there is a problem. Since a plurality of moving rods 7 are provided and are arranged along the height direction of the core shaft 19, therefore, the entire core shaft 19 can be measured, thereby improving the detection efficiency.

[0025] The blind hole 6 is provided on the screw 11, and the screw 11 is in threaded connection with the threaded hole, so that the length of the core shaft 19 can be increased, decreased or the position of the ball can be changed as needed, thereby increasing the application range of the device.

[0026] A longitudinal slideway is provided longitudinally on the base 1. A longitudinal slider 16 is slidably fitted on the longitudinal slideway. A threaded hole is provided in the longitudinal slider 16, and a longitudinal lead screw is in threaded fit with the threaded hole. The longitudinal slider 16 is vertically connected to a first vertical rod 14, and the first vertical rod 14 is parallel and fixedly connected to the vertical plate 5. By rotating the longitudinal lead screw, the rotation of the longitudinal lead screw can drive the movement of the longitudinal slider 16, and further drive the movement of the first vertical rod 14. The movement of the vertical plate 5 is driven by the first vertical rod 14 to adjust the distance between the ball and the mandrel 19, so as to adapt to mandrels 19 of different diameters, and further improve the scope of use.

[0027] The circular hole 2 is a tapered structure with a wider upper part and a narrower lower part, and a second ball 15 cavity is provided on the inner wall of the bottom surface of the circular hole 2. A second ball 15 is provided in the second ball 15 cavity. The circular hole 2 being a tapered structure with a wider upper part and a narrower lower part can adapt to the shaft ends of transmission first shafts of different diameters, and the second ball 15 can reduce the friction between the ball and the circular hole 2.

[0028] Support and strengthening ribs 17 are fixedly connected between the transverse slider 3 and the second vertical rod 13, and between the longitudinal slider 16 and the first vertical rod 14.

[0029] When this application is used, by inserting the shaft end of the transmission first shaft into the circular hole 2 and rotating it one week, it can be quickly known whether there is a problem with the mandrel 19 of the transmission first shaft, thereby improving the detection efficiency of the mandrel 19 of the transmission first shaft, and at the same time saving the time and physical strength consumed by the staff for detection with a vernier caliper.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention 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 described in the foregoing embodiments, or perform equivalent replacements on 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 invention.

Claims

1. A dimension gauge for a transmission shaft, characterized in that: It includes a fixed base, a circular hole is opened on the base, and transverse sliders are arranged on the left and right sides of the base. The transverse slider can move and be stationary when driven by a driving device, and a limit clamping plate with the same height as the transition shaft is vertically connected to the transverse slider; a vertical plate is vertically arranged on the rear side of the base, and a plurality of longitudinal blind holes are opened on the vertical plate. The blind holes are arranged along the height direction of the core shaft, and sliders are slidably fitted in the blind holes. A moving rod is fixedly connected to the slider, and a first ball cavity is arranged at the front end of the moving rod, and a first ball is adapted in the first ball cavity. An extrusion plate is fixedly connected in the blind hole by a spring, and a pressure sensor is fixedly arranged on the side of the extrusion plate facing the moving rod, the pressure sensor is connected with a controller signal, the controller transmits signals with the indicator light, and the pressure sensor contacts the moving rod.

2. The dimension gauge for a transmission shaft according to claim 1, characterized in that: The vertical plate is provided with a plurality of screw holes in the vertical direction, the inner threads of the screw holes are matched with screw rods, and the blind holes are arranged along the length direction of the screw rods.

3. The dimension gauge for a transmission shaft according to claim 2, characterized in that: A longitudinal slide is longitudinally arranged on the base, a longitudinal slider is slidably matched on the longitudinal slide, a screw hole is opened on the longitudinal slider, a longitudinal screw rod is matched with the inner thread of the screw hole, the longitudinal slider is vertically connected to the first vertical rod, and the first vertical rod is parallel to the vertical plate and fixedly connected.

4. The dimension gauge for a transmission shaft according to claim 3, characterized in that: The driving device includes a transverse screw rod, a screw hole is transversely opened on the transverse slider, the transverse screw rod passes through the screw hole and is threadedly matched with the screw hole, the top surface of the transverse slider is vertically connected to a second vertical rod, and the second vertical rod is parallel to and fixedly connected to the limiting clamp.

5. The dimension gauge for a transmission shaft according to claim 4, characterized in that: The circular hole is a tapered structure that is wide at the top and narrow at the bottom, and a second ball cavity is provided on the inner wall of the bottom surface of the circular hole, and a second ball is provided in the second ball cavity.

6. The dimension gauge for a transmission shaft according to claim 5, characterized in that: Support reinforcing ribs are fixedly connected between the transverse slider and the second vertical rod, and between the longitudinal slider and the first vertical rod.

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