Pulley shaft size detection device

Abstract

The invention discloses a pulley shaft size detection device, comprising a support frame, a pulley shaft fixing device to be measured and a size measuring device are arranged on the support frame, the pulley shaft fixing device to be measured comprises a base with a spherical surface, a spherical telescopic rod vertically arranged to fix the pulley shaft to be measured, and an elastic push rod clamping the outer edge of the pulley shaft to be measured, the spherical surface of the base and the spherical surface of the spherical telescopic rod respectively correspond to the input end and the top processing hole of the pulley shaft to be measured, and the spherical surface diameters of the base and the spherical telescopic rod respectively match the inner diameters of the input end and the top processing hole of the pulley shaft to be measured; the size measuring device comprises a size measuring set unit composed of each elastic push rod and a sensor arranged on the elastic push rod, the sensor contacts the part to be measured of the pulley shaft and is externally connected to a data converter, and the data converter is connected to an electronic display. The structure is simple, the cost is low, the pulley shaft size index can be quickly detected, and the pulley shaft processing accuracy is improved.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to a pulley shaft size detection device. Background Art

[0002] With the rapid development of industrial manufacturing and the advancement of mechanical technology in my country, competition in the processing field has become increasingly fierce. The processing industry has entered an era of micro-profits. This situation forces the processing industry to continuously innovate and improve. Producing high-quality products has become a trend of industrial development. However, the production of these fine products must have more detection technologies and control methods to ensure product quality. This important method must start from the raw materials to strictly control the geometric accuracy of parts, so as to ensure the quality of finished products and improve the competitiveness of enterprises in the market. In the production process of automobile engine pulley shafts, in order to control product quality, precision testing must be carried out. Professional outsourced inspection equipment is expensive. For this reason, various inspection fixtures need to be specially designed to be able to quickly check the various precisions of the pulley shaft. Wheel-shaped and disc-shaped workpieces are widely used in mechanical equipment. In equipment with higher precision requirements, the processing precision requirements for such workpieces are often high, especially those involving transmission precision and the runout precision of mating surfaces. The State Intellectual Property Office has disclosed an active pulley shaft (CN102518642A), see Figure 1 and Figure 2 As shown, it mainly includes an input end 6 and a pulley conical surface 22, the input end 6 is arranged at the rear of the pulley conical surface 22, the upper end of the input end 6 is a positioning outer circle 23, the upper end surface of the positioning outer circle 23 is a positioning surface 24, the front part of the pulley conical surface 22 is a pulley mounting section 20, the upper end surface of the pulley mounting section 20 is a reference end surface, the front part of the pulley mounting section 20 is a pulley spline section 15, the top end of the pulley spline section 15 is a top end 7, the diameter of the pulley mounting section 20 is larger than the pulley spline section 15, and oil passage openings are evenly distributed on the end surface of the pulley mounting section 20, and an oil passage groove is provided on the pulley spline section 15, and the position of the oil passage groove matches the position of the oil passage opening. The State Intellectual Property Office also disclosed a method for manufacturing a pulley shaft for a belt-type continuously variable transmission (CN109702137A), wherein the pulley shaft for a belt-type continuously variable transmission is integrally forged by forging a shaft portion, a conical pulley portion extending radially outward from the shaft portion, and an annular parking gear protruding from the bottom surface of the cone of the pulley portion along the axial direction of the shaft portion near the outer periphery of the pulley portion. The method is characterized in that the method for manufacturing a pulley shaft for a belt-type continuously variable transmission has the following steps: a finishing step, in which the pulley portion and the parking gear are formed from a cylindrical workpiece through multiple forging steps; a preparation step, in which a conical pulley preparation portion having a vertex angle smaller than the vertex angle of the cone of the pulley portion is formed before the finishing step.

[0003] The inert pulley is one of the common transmission parts. When the equipment is used, the end face runout accuracy and radial runout accuracy are required to be high. In the prior art, the end face runout and radial runout of the pulley cannot be detected at the same time, so that the detection process is complicated and the detection cycle is long. The State Intellectual Property Office also disclosed an inert pulley runout detection device (CN106595544A), including a support frame and a loading device, a lifting device, a rotating device and a measuring device installed on the support frame, wherein: the loading device includes a motor, a transmission wheel, a driven wheel, a transmission belt and a limit part, the transmission belt is arranged in two rows in parallel, and the parallel spacing is greater than the diameter of the pulley shaft hole to be detected; the limit part is a feed limit part and a discharge limit part, and the feed limit part and the discharge limit part include two groups of limit cylinders respectively arranged on two rows of transmission belts and linearly opposite. Summary of the invention

[0004] The invention provides a pulley shaft dimension detection device which has a simple structure, low cost, can quickly detect multiple dimension indicators of a pulley shaft, and improves the processing accuracy of the pulley shaft.

[0005] The present invention is achieved through the following technical solutions:

[0006] The pulley shaft size detection device comprises a support frame, on which a pulley shaft fixing device to be measured and a size measuring device are arranged, the pulley shaft fixing device to be measured comprises a base with a spherical surface, a spherical telescopic rod vertically arranged to fix the pulley shaft to be measured, and an elastic push rod clamping the outer edge of the pulley shaft to be measured, the spherical surface of the base and the spherical surface of the spherical telescopic rod respectively correspond to the input end and the top processing hole of the pulley shaft to be measured, and the spherical surface diameters of the base and the spherical surface of the spherical telescopic rod respectively match the inner diameters of the input end and the top processing hole of the pulley shaft to be measured; the size measuring device comprises a size measuring complete set of units composed of each elastic push rod and a sensor arranged on the elastic push rod, the sensor is in contact with the part of the pulley shaft to be measured and is externally connected to a data converter, and the data converter is connected to an electronic display.

[0007] The device for fixing the pulley shaft to be measured also includes a supporting surface arranged on the base for vertically arranging the pulley shaft to be measured.

[0008] The spherical telescopic rod is installed in the inner hole of the support arm arranged on the support frame, the spherical telescopic rod is provided with a control handle, and the top end of the spherical telescopic rod is provided with a weight block.

[0009] The support arm is provided with two sets of dimension measuring complete sets of units, two elastic push rods are arranged facing each other and clamp the outer edge of the spline segment, and the sensor arranged on the elastic push rod is in contact with the maximum outer diameter of the spline segment.

[0010] The support frame is also provided with a slide rail, the slide rail is provided with a slide plate, the slide plate is connected with a connecting rod handle, the slide plate is provided with a longitudinal extension arm, and the longitudinal extension arm is provided with a size measurement set unit.

[0011] The dimension measuring units arranged on the longitudinal extension arm are three sets, wherein the sensors in one set can contact the reference end face of the side of the pulley installation section, and the sensors in the other two sets can contact two selected points on the pulley conical surface.

[0012] The support frame is provided with two sets of dimension measuring complete sets of units, two elastic push rods are arranged facing each other and clamp the outer edge of the pulley cone surface, and the sensor arranged on the elastic push rod is in contact with the outer diameter of the pulley cone surface.

[0013] The support frame is provided with two sets of dimension measuring complete sets of units, two elastic push rods are arranged facing each other and clamp the outer edge of the positioning outer circle, and the sensors arranged on the elastic push rods are in contact with the outer diameter of the positioning outer circle.

[0014] The support frame is provided with a dimension measuring set unit, and the sensor on the elastic push rod is in contact with the positioning surface at the upper end of the positioning outer circle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can detect a certain dimension index of the pulley shaft alone, or can detect multiple dimension indexes of the pulley shaft at the same time;

[0017] 2. The pulley shaft fixing device to be tested of the present invention adopts a spherical design. The spherical base and the spherical surface of the spherical telescopic rod respectively clamp the input end and the top circular hole of the pulley shaft so that the pulley shaft to be tested is vertically arranged and can be manually rotated along the axis of the pulley shaft, which can quickly perform multi-point dynamic detection on the pulley conical surface and improve the conical surface processing accuracy;

[0018] 3. The present invention has a simple structure and low cost, can quickly detect the pulley shaft size index, improve the pulley shaft processing accuracy, has high efficiency, and can meet the supporting requirements of automobile parts production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a pulley shaft to be tested in an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A cross-sectional view of

[0021] Figure 3 is a schematic structural diagram of a pulley shaft size detection device according to an embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the pulley shaft size detection device during real-time detection according to an embodiment of the present invention.

[0023] Serial numbers in the figure: 1. support frame, 2. spherical surface, 3. base, 4. spherical telescopic rod, 5. elastic push rod, 6. input end, 7. top, 8. sensor, 9. data converter, 10. electronic display, 11. support surface, 12. control handle, 13. support arm, 14. weight block, 15. spline section, 16. slide rail, 17. slide plate, 18. connecting rod handle, 19. longitudinal extension arm, 20. pulley mounting section, 21. reference end surface, 22. pulley cone surface, 23. positioning outer circle, 24. positioning surface. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0025] Example:

[0026] See also Figure 3 and Figure 4As shown, a pulley shaft size detection device comprises a support frame 1, on which a pulley shaft fixing device to be measured and a size measuring device are arranged, the pulley shaft fixing device to be measured comprises a base 3 with a spherical surface 2, a spherical telescopic rod 4 vertically arranged to fix the pulley shaft to be measured, a supporting surface 11 arranged on the base 3, and an elastic top rod 5 clamping the outer edge of the pulley shaft to be measured, the spherical surface 2 of the base 3 and the spherical surface of the spherical telescopic rod respectively correspond to the input end 6 and the top end 7 processing hole of the pulley shaft to be measured, and the spherical surface diameters of the spherical surface 2 of the base 3 and the spherical surface of the spherical telescopic rod 4 respectively match the inner diameters of the input end 6 and the top end 7 processing hole of the pulley shaft to be measured The spherical telescopic rod 4 is installed in the inner hole of the support arm 13 arranged on the support frame 1, the spherical telescopic rod 4 is provided with a control handle 12, and the top of the spherical telescopic rod 4 is provided with a weight 14; the size measuring device includes a size measuring set of units consisting of each elastic push rod 5 and a sensor 8 arranged on the elastic push rod 5, the sensor 8 is in contact with the part to be measured of the pulley shaft and is externally connected to a data converter 9, and the data converter 9 is connected to an electronic display 10; two sets of size measuring sets are provided on the support arm 13, the two elastic push rods 5 are arranged opposite to each other and clamp the outer edge of the spline segment 15 , the sensor arranged on the elastic push rod 5 is in contact with the maximum outer diameter of the spline segment 15; the support frame 1 is provided with five sets of dimension measurement complete units, wherein the two elastic push rods 5 of two sets of dimension measurement complete units are arranged opposite to each other and clamp the outer edge of the pulley cone surface 22, and the sensor 8 arranged on the elastic push rod is in contact with the outer diameter of the pulley cone surface 22; there are also two sets of dimension measurement complete units. The two elastic push rods 5 are arranged opposite to each other and clamp the outer edge of the positioning outer circle 23, and the sensor 8 arranged on the elastic push rod is in contact with the outer diameter of the positioning outer circle 23; the sensor 8 on the elastic push rod 5 of the last set of dimension measurement complete units is in contact with the upper end of the positioning outer circle 23 The support frame 1 is also provided with a slide rail 16, and a slide plate 17 is provided on the slide rail 16. The slide plate 17 is connected to a connecting rod handle 18, and a longitudinal extension arm 19 is provided on the slide plate 17. The longitudinal extension arm 19 is provided with three sets of dimension measurement units. By pulling the connecting rod handle 18, the slide plate 17 and the longitudinal extension arm 19 are displaced, and the sensor 8 in one set of the dimension measurement units can be in contact with the side reference end face 21 of the pulley mounting section 20, and the sensors 8 in the other two sets of the dimension measurement units can be in contact with two selected points on the pulley conical surface 22.

[0027] The present invention can detect a certain dimension index of the pulley shaft alone, and can also detect multiple dimension indexes of the pulley shaft at the same time; it can detect the outer edge size of the pulley conical surface 22, the positioning outer circle 23, the spline section 15 or the corresponding spline before processing forging forming section; it can detect relevant height indicators based on the reference end face 21, the positioning surface 24 and the selected points on the pulley conical surface 22; the pulley shaft fixing device to be tested of the present invention adopts a spherical design, and the spherical surfaces of the spherical base and the spherical telescopic rod respectively clamp the input end and the top circular hole of the pulley shaft so that the pulley shaft to be tested is vertically arranged and can be manually rotated along the axis of the pulley shaft, and can quickly perform multi-point dynamic detection on the pulley conical surface to improve the conical surface processing accuracy; the present invention has a simple structure, low cost, can quickly detect the dimension index of the pulley shaft, improve the processing accuracy of the pulley shaft, has high efficiency, and can meet the supporting requirements of automobile parts production.

[0028] The embodiments are only for facilitating the understanding of the technical solutions of the present invention and do not constitute a limitation on the protection scope of the present invention. Any simple modification, equivalent changes and modifications made to the above solutions without departing from the contents of the technical solutions of the present invention or based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pulley shaft dimension detection device, wherein the pulley shaft comprises an input end (6) and a pulley conical surface (22), the upper end of the input end (6) is a positioning outer circle (23), the upper end surface of the positioning outer circle (23) is a positioning surface (24), the front part of the pulley conical surface (22) is a pulley mounting section (20), the upper end surface of the pulley mounting section (20) is a reference end surface, the front part of the pulley mounting section (20) is a pulley spline section (15), and the top end of the pulley spline section (15) is a top end (7); the pulley shaft dimension detection device comprises a support frame (1), the support frame is provided with a pulley shaft fixing device to be measured and a dimension measuring device, characterized in that The device for fixing the pulley shaft to be measured comprises a base (3) with a spherical surface (2), a spherical telescopic rod (4) vertically arranged to fix the pulley shaft to be measured, and an elastic top rod (5) clamping the outer edge of the pulley shaft to be measured, the spherical surface (2) of the base (3) and the spherical surface of the spherical telescopic rod respectively correspond to the processing holes of the input end (6) and the top end (7) of the pulley shaft to be measured, and the spherical surface diameters of the spherical surface (2) of the base (3) and the spherical telescopic rod (4) respectively match the inner diameters of the processing holes of the input end (6) and the top end (7) of the pulley shaft to be measured; the size measuring device comprises The invention relates to a dimension measuring unit comprising elastic push rods (5) and sensors (8) arranged on the elastic push rods (5), wherein the sensors (8) are in contact with the part of the pulley shaft to be measured and are externally connected to a data converter (9), and the data converter (9) is connected to an electronic display (10); the spherical telescopic rod (4) is installed in the inner hole of a support arm (13) arranged on the support frame (1), the spherical telescopic rod (4) is provided with a control handle (12), and a weight block (14) is arranged at the top of the spherical telescopic rod (4); The support arm (13) is provided with two sets of dimension measurement units, the two elastic push rods (5) are arranged facing each other and clamp the outer edge of the spline segment (15), and the sensor arranged on the elastic push rod (5) is in contact with the maximum outer diameter of the spline segment (15); The support frame (1) is also provided with a slide rail (16), the slide rail (16) is provided with a slide plate (17), the slide plate (17) is connected with a connecting rod handle (18), the slide plate (17) is provided with a longitudinal extension arm (19), the longitudinal extension arm (19) is provided with three sets of dimension measurement complete units, the sensor (8) in one set is in contact with the side reference end surface (21) of the pulley mounting section (20), and the sensors (8) in the other two sets are in contact with two selected points on the pulley conical surface (22); The support frame (1) is provided with two sets of dimension measurement units, two elastic push rods (5) are arranged facing each other and clamp the outer edge of the pulley cone surface (22), and the sensor (8) arranged on the elastic push rod is in contact with the outer diameter of the pulley cone surface (22); The support frame (1) is also provided with two sets of dimension measurement units, two elastic push rods (5) are arranged facing each other and clamp the outer edge of the positioning outer circle (23), and the sensor (8) arranged on the elastic push rod is in contact with the outer diameter of the positioning outer circle (23); The support frame (1) is also provided with a dimension measuring set unit, and the sensor (8) on the elastic push rod (5) contacts the positioning surface (24) at the upper end of the positioning outer circle (23).

2. The pulley shaft size detection device according to claim 1, characterized in that The device for fixing the pulley shaft to be measured also includes a support surface (11) arranged on the base (3) so that the pulley shaft to be measured is arranged vertically.

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