Differential spider hard axle journal excircle measuring device

Abstract

The utility model discloses a differential spider hard axle journal excircle measuring device, which relates to the differential spider field and comprises a bottom plate, a sliding groove is arranged on the bottom plate, a gauge stand supporting rod, a left supporting plate and a right supporting plate are sequentially arranged on the sliding groove, the left supporting plate is locked on the sliding groove through a fixing bolt, and the fixing bolt penetrates through the bottom plate. The left supporting plate is fixed relative to the bottom plate; an adjusting assembly is installed on the lower portion of the right supporting plate and used for being matched with the locking check block to lock the right supporting plate relative to the bottom plate. Right-angle positioning grooves are formed in the upper parts of the right supporting plate and the left supporting plate; two ends of a to-be-measured workpiece or a standard measuring bar are placed on the corresponding right-angle positioning grooves; the gauge stand supporting rod is locked relative to the base plate through the locking check block, one end of the gauge clamp positioning block is detachably installed on the gauge stand supporting rod, and the other end of the gauge clamp positioning block is used for clamping the dial gauge, so that a measuring head of the dial gauge is in contact with the surface of a workpiece or a standard measuring bar. The device improves the detection efficiency, reduces the probability of measurement errors, and is suitable for the detection of mass production.

Description

Technical Field

[0001] The utility model relates to the field of differential cross shafts, in particular to a device for measuring the outer circle of a hard-turned axle journal of a differential cross shaft. Background Art

[0002] In the prior art, a digital micrometer is used to directly measure the outer diameter of the journal of the differential cross shaft. This method requires the inspector to have high operating skills and certain practical experience. In actual testing, improper operation can easily cause measurement errors, and the proficiency of the operation will affect the detection efficiency. Therefore, it is necessary to propose a universal detection device to improve the detection efficiency and reduce the probability of measurement errors. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a differential cross shaft hard turning axle neck outer circle measuring device, which improves the detection efficiency, reduces the probability of measurement error, and is suitable for mass production detection.

[0004] The purpose of the utility model is achieved through the following technical solutions: this differential cross-axle hard-car axle neck outer circle measuring device comprises a base plate, a slide groove is provided along the length direction of the base plate, a table frame support rod, a left support plate and a right support plate are sequentially installed on the slide groove, the left support plate is locked on the slide groove with a fixing bolt, and the fixing bolt passes through the base plate to fix the left support plate relative to the base plate; an adjustment component is installed at the lower part of the right support plate, which is used to cooperate with a locking block to lock the right support plate relative to the base plate; right-angle positioning grooves are provided on the upper parts of both the right support plate and the left support plate, and the two ends of the workpiece to be measured or the standard measuring rod are placed on the corresponding right-angle positioning grooves; the table frame support rod is locked relative to the base plate with a locking block, one end of the table clamp positioning block is detachably installed on the table frame support rod, and the other end of the table clamp positioning block is used to clamp the micrometer so that the probe of the micrometer contacts the surface of the workpiece or the standard measuring rod.

[0005] As a further technical solution, the adjustment assembly includes a handle, an eccentric locking shaft and a connecting piece. An axial hole is formed through the lower part of the right support plate in a direction perpendicular to the slide groove. At the same time, a mounting hole connected to the axial hole is formed in the lower part of the right support plate in a direction perpendicular to the axial hole. A part of the connecting piece is accommodated in the mounting hole, and the other part extends into the slide groove and is connected to the locking block. One end of the eccentric locking shaft extends into the axial hole and passes through the connecting piece. A handle is installed on the other end of the eccentric locking shaft. When the handle is pulled, the eccentric locking shaft is driven to synchronously pull the locking block in the slide groove so that the right support plate is fastened to the base plate.

[0006] As a further technical solution, a connecting hole for the eccentric locking shaft to penetrate is provided on the connecting piece, and a screw is arranged at the lower part of the connecting piece for penetrating the locking block.

[0007] As a further technical solution, one end of the meter clamp positioning block is locked relative to the meter frame support rod by a clamping bolt, and the other end of the meter clamp positioning block is locked to the micrometer by a clamping screw.

[0008] As a further technical solution, a carbide inlay strip is arranged on the top of the right support plate, a notch is opened on one side of the right support plate, and a blind hole is opened on the side wall of the notch for cooperating with the fixing screws to install the foot rest, and a carbide inlay strip is also arranged on the inner side of the foot rest, and cooperates with the carbide inlay strip on the top of the right support plate to form a right-angle positioning groove.

[0009] As a further technical solution, a carbide inlay strip is arranged on the top of the left support plate, a notch is opened on one side of the left support plate, and a blind hole is opened on the side wall of the notch for cooperating with the fixing screws to install the foot rest, and a carbide inlay strip is also arranged on the inner side of the foot rest, and cooperates with the carbide inlay strip on the top of the left support plate to form a right-angle positioning groove.

[0010] As a further technical solution, a fixing hole is provided on the bottom plate, and the fixing hole is connected to the slide groove for cooperating with the fixing screw hole provided on the bottom of the left support plate, and the fixing bolt passes through the fixing hole and the fixing screw hole in sequence.

[0011] As a further technical solution, when measuring the workpiece, two measuring journal surfaces diagonally opposite to each other on the same journal line are placed on the surfaces of the right-angle positioning grooves corresponding to the left support plate and the right support plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. Before testing, first position the left and right ends of the differential cross shaft to be tested through the left and right support plates respectively. It is not easy to shake or deviate during testing, and the test results are accurate and reliable;

[0014] 2. The installation positions of the left and right support plates on the bottom plate and the installation position of the micrometer on the support rod of the meter frame are flexible and adjustable, which can adapt to the measurement of differential cross shafts of different sizes and specifications, and has better versatility;

[0015] 3. A carbide inlay strip is installed on the support plate at the contact position with the differential cross shaft. The inlay strip is more wear-resistant and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 AA section view.

[0018] Figure 3 This is a schematic diagram of the main structure of the bottom plate of the utility model.

[0019] Figure 4 It is a side structural schematic diagram of the bottom plate of the utility model.

[0020] Figure 5 It is a schematic diagram of the main structure of the right supporting plate in the utility model.

[0021] Figure 6 It is a side structural schematic diagram of the right supporting plate in the utility model.

[0022] Figure 7 It is a schematic diagram of the top view of the right supporting plate in the utility model.

[0023] Figure 8 It is a schematic diagram of the main structure of the left supporting plate in the utility model.

[0024] Fig. 9 It is a side structural schematic diagram of the left supporting plate in the utility model.

[0025] Fig.10 It is a structural schematic diagram of the connecting piece in the utility model.

[0026] Fig.11 It is a schematic diagram of the measurement principle of the utility model.

[0027] Fig.12 It is a structural schematic diagram of the standard measuring rod in the utility model.

[0028] Explanation of the accompanying drawings: base plate 1, slide groove 1-1, fixing hole 1-2, table frame support rod 2, table clamp positioning block 3, clamping bolt 4, micrometer 5, workpiece 6, right support plate 7, shaft hole 7-1, mounting hole 7-2, blind hole 7-3, notch 7-4, handle 8, eccentric locking shaft 9, left support plate 10, fixing screw hole 10-1, fixing bolt 11, locking block 12, clamping screw 13, foot 14, fixing screw 15, connecting piece 16, connecting hole 16-1, screw 16-1, carbide inlay strip 17, right-angle positioning groove 18, standard measuring rod 19. DETAILED DESCRIPTION

[0029] The utility model will be described in detail below with reference to the accompanying drawings:

[0030] Example: As attached Figures 1 to 11As shown, the differential cross shaft hard turning axle neck outer circle measuring device includes a base plate 1, a slide groove 1-1, a fixing hole 1-2, a table frame support rod 2, a table clamp positioning block 3, a clamping bolt 4, a micrometer 5, a workpiece 6, a right support plate 7, an axis hole 7-1, a mounting hole 7-2, a blind hole 7-3, a notch 7-4, a handle 8, an eccentric locking shaft 9, a left support plate 10, a fixing screw hole 10-1, a fixing bolt 11, a locking block 12, a clamping screw 13, a foot 14, a fixing screw 15, a connecting piece 16, a connecting hole 16-1, a screw 16-1, a carbide inlay strip 17, a right-angle positioning groove 18 and a standard measuring rod 19.

[0031] Reference Figure 1 , 2 A T-shaped slide groove 1-1 is provided along the length direction of the bottom plate 1, and the watch frame support rod 2, the left support plate 10 and the right support plate 7 are installed on the slide groove 1-1 from left to right. Among them, the left support plate 10 is locked on the slide groove 1-1 with a fixing bolt 11, and the fixing bolt 11 passes through the bottom plate 1. Preferably, as Figure 3 , 8 As shown, a waist-shaped fixing hole 1-2 is opened in the center of the bottom plate 1, and the fixing hole 1-2 is connected with the slide groove 1-1 to cooperate with the fixing screw hole 10-1 opened at the bottom of the left support plate 10. The fixing bolt 11 passes through the fixing hole 1-2 and the fixing screw hole 10-1 in sequence to fix the left support plate 10 relative to the bottom plate 1, and the fixed position of the left support plate 10 on the bottom plate 1 is adjusted by the waist-shaped fixing hole 1-2.

[0032] like Figure 2 As shown, an adjustment assembly is installed at the lower part of the right support plate 7, and the adjustment assembly is used to cooperate with the locking block 12 to lock the right support plate 7 relative to the bottom plate 1. The upper parts of the right support plate 7 and the left support plate 10 are both provided with right-angle positioning grooves 18, and the two ends of the workpiece 6 to be measured or the standard measuring rod 19 are placed on the corresponding right-angle positioning grooves 18. Figure 1 As shown, the meter stand support rod 2 is locked relative to the base plate 1 by a locking block 12, the left end of the meter clamp positioning block 3 is detachably mounted on the meter stand support rod 2 by a clamping bolt 4, and the right end of the meter clamp positioning block 3 is clamped to the micrometer 5 by a clamping screw 13, so that the probe of the micrometer 5 contacts the surface of the workpiece 6 or the standard measuring rod 19.

[0033] Furthermore, the adjustment assembly includes a handle 8, an eccentric locking shaft 9 and a connecting member 16, such as Figure 5 , 6 As shown in FIG. 7 , an axial hole 7-1 is formed in the lower part of the right support plate 7 along a direction perpendicular to the slide groove 1-1, and a mounting hole 7-2 is formed in the lower part of the right support plate 7 along a direction perpendicular to the axial hole 7-1, and the mounting hole 7-2 is connected to the axial hole 7-1. Fig.10As shown, a connection hole 16-1 is provided at the upper end of the connection member 16 for the eccentric locking shaft 9 to pass through, and a screw 16-2 is provided at the lower end of the connection member 16 for passing through the locking block 12. The upper part of the connection member 16 is accommodated in the mounting hole 7-2, and the lower part of the connection member 16 extends into the slide slot 1-1 and is connected to the locking block 12. One end of the eccentric locking shaft 9 extends into the shaft hole 7-1 and passes through the connection member 16, and a handle 8 is installed at the other end of the eccentric locking shaft 9. When the handle 8 is pulled, the eccentric locking shaft 9 is driven to synchronously pull the locking block 12 in the slide slot 1-1 so that the right support plate 7 is fastened to the base plate 1.

[0034] Reference Figure 2 , 5 A carbide inlay strip 17 is arranged on the top of the right support plate 7, a notch 7-4 is arranged on the left side of the right support plate 7, two blind holes 7-3 are arranged on the side wall of the notch 7-4, and the blind holes 7-3 are used to cooperate with the fixing screws 15 to install the foot 14 through threaded connection, and the inner side surface of the foot 14 (i.e. Figure 2 A carbide inlay strip 17 is also provided on the right side surface, and cooperates with the carbide inlay strip 17 on the top of the right support plate 7 to form a right-angle positioning groove 18, which is convenient for stably placing the end of the workpiece 6 to be measured or the standard measuring rod 19. Figure 8 , 9 As shown, correspondingly, a carbide inlay strip 17 is also provided on the top of the left support plate 10, a notch 7-4 is also provided on the left side of the left support plate 10, a blind hole 7-3 is provided on the side wall of the notch 7-4, and is used to cooperate with the fixing screw 15 to install the foot 14, and a carbide inlay strip 17 is also provided on the inner side of the foot 14, and cooperates with the carbide inlay strip 17 on the top of the left support plate 10 to form a right-angle positioning groove 18. Preferably, when measuring the workpiece 6, the two measuring journal surfaces diagonally opposite to the same journal line are placed on the right-angle positioning groove 18 surfaces corresponding to the left support plate 10 and the right support plate 7.

[0035] Working process of the utility model: This measuring device is an instrument that uses the comparison method to measure. With the help of the outer diameter size of the standard measuring rod, the indicated value of the measured workpiece and the fixed value of the standard measuring rod are compared to obtain the actual value of the measured workpiece. Fig.11 As shown, during the test, the two ends of the workpiece 6 to be tested are fixed and positioned, and then the end surface is tested with a micrometer 5. The test process is as follows:

[0036] (1) Installation and debugging of detection equipment

[0037] First, prepare a standard outer diameter measuring rod according to the outer diameter size of the journal of the differential cross shaft workpiece 6 to be tested, such as Fig.12 As shown, the micrometer 5 to be used is selected according to the tolerance range of the outer diameter of the workpiece journal. Figure 1 , 2As shown, screw the support rod 2 of the table frame into the locking block 12 in the T-shaped slot 1-1 of the bottom plate 1, and tighten it to fix it on the bottom plate 1. The left support plate 10 is fastened to the bottom plate 1 by the fixing bolt 11. The distance between the left support plate 10 and the right support plate 7 is adjusted according to the total length of the workpiece to be measured, so that the two measuring journal surfaces diagonally opposite to the same journal line of the measured workpiece 6 are just on the surfaces of the two support plates. Pull the handle 8 to drive the eccentric locking shaft 9 to pull the locking block 12 in the T-shaped slot 1-1, so that the right support plate 7 is fastened to the bottom plate 1. Use the fixing screw 15 to fasten the footrest 14 to the left support plate 10 and the right support plate 7 respectively, and weld the carbide inlay strip 17 on the right-angle positioning groove 18 formed by them. Use the clamping screw 13 to fasten the dial gauge 5 to the table clamp positioning block 3, place the outer diameter standard measuring rod 19 on the left and right support plates, and move the table clamp positioning block 3 with the dial gauge 5 up and down so that the probe of the dial gauge 5 just contacts the surface of the outer diameter standard measuring rod 19. Tighten the clamping bolt 4 to fasten the table clamp positioning block 3 to the table frame support rod 2. Rotate the table pointer to zero the scale, and the detection device is adjusted.

[0038] (2) Measurement of the outer diameter of the hardened journal of the differential cross shaft

[0039] Use a cross shaft outer diameter calibration gauge rod that is the same or close to the outer diameter of the cross shaft journal to be measured to align the measuring table, and adjust the micrometer 5 to zero. Push the two measuring journal surfaces diagonally opposite to the same journal line of the cross shaft workpiece 6 to be measured parallely into the left and right support plates aligned to the zero position and close to the surface of the foot 14, measure and read the comparison value of the measured part, then the positive and negative comparison values ​​relative to the zero position plus the value of the cross shaft outer diameter calibration gauge rod is the actual size value of the outer diameter of the differential cross shaft journal.

[0040] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A differential cross shaft hard turning journal outer circle measuring device, characterized in that: The utility model comprises a bottom plate (1), a slide groove (1-1) is provided along the length direction of the bottom plate (1), a table frame support rod (2), a left support plate (10) and a right support plate (7) are sequentially installed on the slide groove (1-1), the left support plate (10) is locked on the slide groove (1-1) by a fixing bolt (11), and the fixing bolt (11) passes through the bottom plate (1) so that the left support plate (10) is fixed relative to the bottom plate (1); an adjustment component is installed at the lower part of the right support plate (7) for cooperating with a locking block (12) to lock the right support plate (7) relative to the bottom plate (1); The upper parts of the right support plate (7) and the left support plate (10) are both provided with right-angle positioning grooves (18), and the two ends of the workpiece (6) to be measured or the standard measuring rod (19) are placed on the corresponding right-angle positioning grooves (18); the table frame support rod (2) is locked relative to the bottom plate (1) by a locking block (12); one end of the table clamp positioning block (3) is detachably mounted on the table frame support rod (2); the other end of the table clamp positioning block (3) is used to clamp the micrometer (5) so that the probe of the micrometer (5) contacts the surface of the workpiece (6) or the standard measuring rod (19).

2. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: The adjusting assembly comprises a handle (8), an eccentric locking shaft (9) and a connecting piece (16); an axial hole (7-1) is formed on the lower part of the right supporting plate (7) along a direction perpendicular to the sliding groove (1-1); and a mounting hole (7-2) in communication with the axial hole (7-1) is formed on the lower part of the right supporting plate (7) along a direction perpendicular to the axial hole (7-1); a part of the connecting piece (16) is accommodated in the mounting hole (7-2), and the other part extends into the sliding groove (1-1) and is connected to the locking block (12); one end of the eccentric locking shaft (9) extends into the axial hole (7-1) and passes through the connecting piece (16); a handle (8) is installed on the other end of the eccentric locking shaft (9); when the handle (8) is pulled, the eccentric locking shaft (9) is driven to synchronously pull the locking block (12) in the sliding groove (1-1) so that the right supporting plate (7) is fastened to the base plate (1).

3. The differential cross shaft hard turning journal outer circle measuring device according to claim 2, characterized in that: The connecting piece (16) is provided with a connecting hole (16-1) for the eccentric locking shaft (9) to penetrate therethrough, and a screw rod (16-2) is arranged at the lower part of the connecting piece (16) for penetrating the locking block (12).

4. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: One end of the meter clamp positioning block (3) is locked relative to the meter frame support rod (2) through a clamping bolt (4), and the other end of the meter clamp positioning block (3) is locked to the dial gauge (5) through a clamping screw (13).

5. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: A hard alloy inlay strip (17) is arranged on the top of the right support plate (7), a notch (7-4) is arranged on one side of the right support plate (7), a blind hole (7-3) is arranged on the side wall of the notch (7-4) for cooperating with the fixing screw (15) to install the support foot (14), a hard alloy inlay strip (17) is also arranged on the inner side of the support foot (14), and cooperates with the hard alloy inlay strip (17) on the top of the right support plate (7) to form a right-angle positioning groove (18).

6. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: A hard alloy inlay strip (17) is arranged on the top of the left support plate (10), a notch (7-4) is arranged on one side of the left support plate (10), a blind hole (7-3) is arranged on the side wall of the notch (7-4) for cooperating with the fixing screw (15) to install the footrest (14), a hard alloy inlay strip (17) is also arranged on the inner side of the footrest (14), and cooperates with the hard alloy inlay strip (17) on the top of the left support plate (10) to form a right-angle positioning groove (18).

7. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: The bottom plate (1) is provided with a fixing hole (1-2), which is communicated with the slide groove (1-1) and is used to cooperate with a fixing screw hole (10-1) provided at the bottom of the left support plate (10), and the fixing bolt (11) passes through the fixing hole (1-2) and the fixing screw hole (10-1) in sequence.

8. The differential cross shaft hard turning journal outer circle measuring device according to claim 1, characterized in that: When the workpiece (6) is measured, two measuring journal surfaces diagonally opposite to each other on the same journal line are placed on the surfaces of the corresponding right-angle positioning grooves (18) of the left support plate (10) and the right support plate (7).

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