Detection tool for disc-shaped part

Abstract

The utility model relates to a detection tool for disc-shaped parts. The detection tool comprises a gauge stand, a gauge head, an extension rod and a connecting piece, the gauge head is installed on the gauge stand, the gauge head comprises a dial plate and a gauge rod, the gauge rod is connected to the surface of the dial plate, the end, away from the dial plate, of the gauge rod penetrates through the gauge stand and extends into a groove formed in the side face of a standard part, and a positioning hole is formed in the surface of the gauge stand. The connecting piece is arranged at the positioning hole and used for connecting the gauge rod and the gauge stand, the side, away from the dial plate, of the gauge stand is attached to the side face of the standard part, the end, away from the dial plate, of the gauge rod is connected with an extension rod, and the extension rod points to the inner wall of the groove; the detection tool is provided with the gauge stand, one side of the gauge stand is attached to the side face of the disc-shaped part, the detection instrument is installed on the gauge stand, through cooperation of the gauge stand, the detection instrument is more stable when the depth of the groove is detected, and therefore the accuracy of measured data is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing part detection, and particularly relates to a detection jig for disc-shaped parts. Background Technique

[0002] Disc-shaped parts are one of the common typical parts in mechanical processing. They have a wide range of applications. Disc-shaped parts usually play a supporting and guiding role. Different disc-shaped parts also have many similarities. For example, their main surfaces are basically cylindrical. They have high requirements for dimensional accuracy, shape accuracy, surface roughness, and high coaxiality requirements, etc.

[0003] For some disc-shaped parts (such as gears) with grooves on the side, in order to ensure the operation of the entire mechanical device, it is usually necessary to ensure the accuracy of the disc-shaped parts. Therefore, it is necessary to detect the depth of the grooves on the side to avoid performance problems caused by inconsistent depths. Existing detection of groove depth usually uses vernier calipers, but this tool cannot accurately measure the depth of the grooves, and due to the shape setting of the disc-shaped parts, it is more troublesome to measure the groove depth with vernier calipers, affecting the detection efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a detection jig with a simple structure and reasonable design in order to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A detection jig for disc-shaped parts, including a gauge block, a dial indicator, an extension rod, and a connecting piece. The dial indicator is installed on the gauge block. The dial indicator includes a dial and a stem. The stem is connected to the surface of the dial. The end of the stem away from the dial penetrates through the gauge block and extends into the groove opened on the side of the standard part. A positioning hole is opened on the surface of the gauge block. The connecting piece is arranged at the positioning hole for connecting the stem and the gauge block. The side of the gauge block away from the dial fits against the side of the standard part. An extension rod is connected to the end of the stem away from the dial, and the extension rod points to the inner wall of the groove.

[0007] As a further optimized scheme of the utility model, a stop block is connected to the upper side surface of the gauge block for limiting the position of the gauge block.

[0008] As a further optimized scheme of the utility model, the connecting piece is a locking screw.

[0009] As a further optimized solution of the present utility model, a rotating device is connected to the surface of the watch base. The rotating device includes a support mechanism, a fixing mechanism, and a rotating mechanism. The support mechanism includes a base, a sliding rod, a turntable, and a pressing block symmetrically arranged with the watch base. The turntable is rotatably connected to the upper surface of the base, and the standard part is placed on the upper surface of the turntable. A through installation groove is formed on the surface of the base. There are two groups of sliding rods. One ends of the two groups of sliding rods are symmetrically connected to the surfaces of the watch base and the pressing block respectively. The other ends of the two groups of sliding rods extend into the installation groove and are slidably connected to its inner wall. A driving component is installed in the installation groove. The driving component drives the two groups of sliding rods to drive the watch base and the pressing block to move simultaneously. The fixing mechanism is connected to the surface of the rotating mechanism for fixing the standard part. The rotating mechanism is connected to the surface of the base, and it cooperates with the fixing mechanism to drive the standard part to rotate.

[0010] As a further optimized solution of the present utility model, the driving component includes a first driving member, a double-headed screw rod, and sliders. The first driving member is connected in the installation groove. There are two groups of sliders. The two groups of sliders are both connected to the surface of the double-headed screw rod and are symmetrically arranged. The first driving member drives the double-headed screw rod to rotate. The two groups of sliders are respectively connected to the two groups of sliding rods correspondingly.

[0011] As a further optimized solution of the present utility model, the rotating mechanism includes a connecting plate, a ratchet wheel, a ratchet pawl, a column, and a trigger block. A through hole is formed on the surface of the end of the connecting plate far from the base. The column is slidably connected to the inner wall of the hole and is perpendicular to the upper surface of the base. The trigger block is connected to the upper end surface of the column. The ratchet wheel is sleeved on the surface of the column near the lower end. The ratchet pawl is rotatably connected to the surface of the connecting plate through a rotating shaft and cooperates with the ratchet wheel. The fixing mechanism is fixedly connected to the lower end surface of the column.

[0012] As a further optimized solution of the present utility model, the fixing mechanism includes a housing, a pressing plate, a connecting rod, a limiting plate, a limiting block, and a second driving member. There are at least two groups of pressing plates. The connecting rod is correspondingly connected to the pressing plate. The limiting plate is fixedly connected to the driving end of the second driving member. The second driving member is connected to the inner wall of the housing. An arc-shaped groove is formed on the surface of the limiting plate. The limiting block is slidably connected in the arc-shaped groove. A sliding groove corresponding to the pressing plate is formed on the surface of the housing. The connecting rod penetrates through the sliding groove and slides along the inner wall of the sliding groove. The end of it located inside the housing is connected to the limiting block.

[0013] As a further optimized solution of the present utility model, a clamping groove is formed on the upper surface of the turntable. A clamping block is connected to the lower surface of the housing. The clamping block is inserted into the clamping groove to connect the housing and the turntable.

[0014] The beneficial effects of the present utility model are as follows: The present utility model is provided with a watch base, one side of the watch base fits against the side of the disc-shaped part, and a detection instrument is installed on the watch base. Through the cooperation of the watch base, the detection instrument is more stable when detecting the groove depth, thereby ensuring the accuracy of the measurement data, and this measurement method is more convenient than using a vernier caliper for measurement. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of the overall structure of Embodiment 1 of the present utility model;

[0016] Figure 2 is a plan view of the overall structure of Embodiment 1 of the present utility model;

[0017] Figure 3 is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0018] Figure 4 is a schematic diagram of the structure of the driving assembly of Embodiment 2 of the present utility model;

[0019] Figure 5 is a schematic diagram of the structure of the trigger block of Embodiment 2 of the present utility model;

[0020] Figure 6 is a schematic diagram of the positional structure of the ratchet and pawl of Embodiment 2 of the present utility model;

[0021] Figure 7 is a schematic diagram of the internal structure of the housing of Embodiment 2 of the present utility model;

[0022] Figure 8 is a schematic diagram of the structure of the arc groove of Embodiment 2 of the present utility model.

[0023] In the figure: 1, watch head; 2, connecting piece; 3, watch base; 4, stop block; 5, extension rod; 6, support mechanism; 61, base; 62, sliding rod; 63, turntable; 64, pressing block; 7, fixing mechanism; 71, housing; 72, pressing plate; 73, connecting rod; 74, limiting plate; 75, limiting block; 76, driving member two; 77, arc groove; 8, rotating mechanism; 81, connecting plate; 82, ratchet; 83, pawl; 84, column; 85, trigger block; 9, driving assembly; 91, driving member one; 92, double-headed screw; 93, slider; 10, clamping block. Detailed Embodiments

[0024] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0025] Example 1

[0026] Reference Figure 1 and Figure 2 , a detection fixture for disc-shaped parts, including a gauge block 3, a dial indicator 1, an extension rod 5 and a connecting piece 2. The dial indicator 1 is installed on the gauge block 3. The dial indicator 1 includes a dial and a stem. The stem is connected to the surface of the dial. The end of the stem away from the dial penetrates through the gauge block 3 and extends into a groove opened on the side of a standard part. A positioning hole is opened on the surface of the gauge block 3. The connecting piece 2 is arranged at the positioning hole for connecting the stem and the gauge block 3. The side of the gauge block 3 away from the dial fits against the side of the standard part. An extension rod 5 is connected to the end of the stem away from the dial, and the extension rod 5 points to the inner wall of the groove.

[0027] It should be noted that the dial indicator 1 and the extension rod 5 in this embodiment are a detection instrument, specifically a pointer depth gauge. The extension rod 5 is selected according to the depth of the groove opened on the side of the standard part and the inspection requirements, and different specifications can be replaced; the positioning hole provided on the gauge block 3 is a countersunk positioning hole, which matches the stem of the dial indicator 1. The clearance hole below it is clear, and there is a thread on the front side and the outside is clear for locking the dial indicator 1; the three sides of the standard part are ground flat, and its arc and groove are cut by slow wire cutting.

[0028] Furthermore, a stop block 4 is connected to the upper side surface of the gauge block 3 for limiting the position of the gauge block 3.

[0029] Furthermore, the connecting piece 2 is a locking screw.

[0030] The usage process of the detection fixture in this embodiment is as follows:

[0031] 1) Zero the dial indicator 1;

[0032] 2) Clean the workpiece (i.e., the standard part / disc-shaped part), removing oil stains and burrs;

[0033] 3) Move the gauge block 3 onto the workpiece to fit against the outer circle. The length of the gauge block 3 requires at least three or more supporting points, and check that there is no gap between the fixture and the workpiece after fitting;

[0034] 4) The gauge block 3 fits against the front surface of the workpiece. If there is a bayonet, the stop block 4 is set on the standard block, and the gauge block 3 is fixed in the bayonet of the workpiece. If the reference of the workpiece is a flat surface, the stop block 4 is installed on the gauge block 3, and the stop block 4 is pressed against the flat surface of the workpiece;

[0035] 5) When measuring, move left and right to find the lowest reading shown by the dial indicator 1, which is the difference from the standard depth.

[0036] Example 2

[0037] This embodiment provides a detection fixture for disc-shaped parts, reference Figures 3 to 8, on the basis of Embodiment 1, in order to improve the detection efficiency of the device, a corresponding rotating device is added for cooperation. Specifically, a rotating device is connected to the surface of the table base 3. The rotating device includes a support mechanism 6, a fixing mechanism 7, and a rotating mechanism 8. The support mechanism 6 includes a base 61, a sliding rod 62, a turntable 63, and a pressing block 64 symmetrically arranged with the table base 3. The turntable 63 is rotatably connected to the upper surface of the base 61, and the standard part is placed on the upper surface of the turntable 63. A through installation groove is formed on the surface of the base 61. There are two groups of sliding rods 62. One ends of the two groups of sliding rods 62 are symmetrically connected to the surfaces of the table base 3 and the pressing block 64 respectively. The other ends of the two groups of sliding rods 62 extend into the installation groove and are slidably connected to its inner wall. A driving component 9 is installed in the installation groove. The driving component 9 drives the two groups of sliding rods 62 to drive the table base 3 and the pressing block 64 to move simultaneously. The fixing mechanism 7 is connected to the surface of the rotating mechanism 8 for fixing the standard part. The rotating mechanism 8 is connected to the surface of the base 61, and it cooperates with the fixing mechanism 7 to drive the standard part to rotate.

[0038] It should be noted that the detection jig in this embodiment does not need to be provided with a stop block 4, and the detection jig in this embodiment is suitable for annular disc-shaped workpieces.

[0039] In actual use, first place the standard part on the upper surface of the turntable 63 so that the groove on the side of the standard part is aligned with the extension rod 5. Then start the driving part one 91 to drive the table base 3 and the pressing block 64 to stick to the side of the standard part (at this time, it does not need to be stuck too tightly so that the standard part can be slightly adjusted). Adjust the standard part so that the side head of the extension rod 5 is at the lowest point of the groove. At this time, the table base 3 can be stuck tightly to the standard part. After reading the measurement value, use the fixing mechanism 7 to fix the standard part, and drive the standard part to rotate through the rotating mechanism 8 (before the standard part rotates, start the driving part one 91 to drive the dial and the pressing block 64 away from the standard part) to detect the next groove.

[0040] Furthermore, the driving component 9 includes a driving part one 91, a double-headed screw 92, and a slider 93. The driving part one 91 is connected in the installation groove. There are two groups of sliders 93. The two groups of sliders 93 are both connected to the surface of the double-headed screw 92 and are symmetrically arranged. The driving part one 91 drives the double-headed screw 92 to rotate, and the two groups of sliders 93 are respectively connected to the two groups of sliding rods 62 correspondingly.

[0041] Furthermore, the rotating mechanism 8 includes a connecting plate 81, a ratchet wheel 82, a ratchet pawl 83, a column 84, and a trigger block 85. A through hole is formed on the surface of one end of the connecting plate 81 away from the base 61. The column 84 is slidably connected to the inner wall of the hole and is perpendicular to the upper surface of the base 61. The trigger block 85 is connected to the upper end surface of the column 84. The ratchet wheel 82 is sleeved on the surface of the column 84 near the lower end. The ratchet pawl 83 is rotatably connected to the surface of the connecting plate 81 through a rotating shaft and cooperates with the ratchet wheel 82. The fixing mechanism 7 is fixedly connected to the lower end surface of the column 84.

[0042] It should be noted that a torsion spring (not shown) is provided on the rotating shaft. The rotation of the ratchet 82 will move the pawl 83 . The torsion spring can reset the pawl 83 to clamp the ratchet 82 .

[0043] It should be further explained that the number of teeth on the ratchet 82 is consistent with the number of grooves opened on the standard part. Therefore, each rotation of the ratchet 82 (one rotation means: making the pawl 83 pass over one tooth of the ratchet 82) can make the extension rod 5 inserted into a groove of the standard part. When the ratchet 82 completes one circle, the groove on the side of the standard part should also be detected.

[0044] Furthermore, the fixing mechanism 7 includes a shell 71, a pressure plate 72, a connecting rod 73, a limiting plate 74, a limiting block 75 and a second driving member 76. The pressure plate 72 is provided with at least two groups. The connecting rod 73 is connected to the pressure plate 72 accordingly. The limiting plate 74 is fixedly connected to the driving end of the second driving member 76. The second driving member 76 is connected to the inner wall of the shell 71. An arc groove 77 is provided on the surface of the limiting plate 74. The limiting block 75 is slidably connected in the arc groove 77. A sliding groove corresponding to the pressure plate 72 is provided on the surface of the shell 71. The connecting rod 73 passes through the sliding groove and slides along the inner wall of the sliding groove. One end of the connecting rod 73 located inside the shell 71 is connected to the limiting block 75.

[0045] Furthermore, a card slot is provided on the upper surface of the turntable 63 , and a card block 10 is connected to the lower surface of the shell 71 . The card block 10 is inserted into the card slot to connect the shell 71 and the turntable 63 .

[0046] It should be noted that the shape of the card slot is consistent with the shape of the card block 10, and there are no excessive restrictions on their shapes. As long as the two cooperate, the rotation of the shell 71 can drive the turntable 63 to rotate. Specifically, it can be a triangle, square, cross, etc. When the card block 10 is inserted into the card slot, the turntable 63 can be driven to rotate by rotating the trigger block 85.

[0047] In actual use, when it is necessary to fix the standard part, first pass the card block 10 through the middle of the standard part to insert it into the card slot, then start the driving member 2 76 to drive the limiting plate 74 to rotate, and the limiting slot cooperates with the limiting block 75 to drive the connecting rod 73 to slide along the sliding slot, thereby driving multiple groups of pressure plates 72 to move at the same time, thereby fixing the standard part. After fixing, the ratchet 82 can be rotated once, that is, the standard part is driven to rotate once, so that the inspection fixture detects the next groove. When the standard part needs to be removed from the turntable 63, the trigger block 85 can be pulled upward to move the card block 10 away from the card slot.

[0048] In this embodiment, the driving member 1 91 and the driving member 2 76 are servo motors.

[0049] Embodiment 3

[0050] This embodiment provides a detection fixture for disc-shaped parts. On the basis of Embodiment 2, in order to facilitate the use of the device, a driving motor is used to replace the ratchet 82 and pawl 83 structures in Embodiment 2. Specifically, the driving motor is connected to the lower end face of the column 84, and its driving end is connected to the housing 71. Through this setting, when the device detects the groove depth of the standard part, it does not need to be manually rotated, which not only facilitates the use but also improves the detection efficiency.

[0051] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A testing fixture for disc-shaped parts, characterized in that: The invention comprises a meter base (3), a meter head (1), an extension rod (5) and a connecting piece (2), wherein the meter head (1) is mounted on the meter base (3), the meter head (1) comprises a dial and a meter rod, the meter rod is connected to the surface of the dial, the end of the meter rod away from the dial passes through the meter base (3) and extends to a groove provided on the side of the standard part, a positioning hole is provided on the surface of the meter base (3), the connecting piece (2) is provided at the positioning hole and is used to connect the meter rod and the meter base (3), the side of the meter base (3) away from the dial is in contact with the side of the standard part, the end of the meter rod away from the dial is connected to the extension rod (5), and the extension rod (5) points to the inner wall of the groove.

2. A detection fixture for disc-shaped parts according to claim 1, characterized in that: The upper surface of the meter base (3) is connected with a stopper (4) for limiting the position of the meter base (3).

3. A detection fixture for disc-shaped parts according to claim 1 or 2, characterized in that: The connecting piece (2) is a locking nail.

4. A detection fixture for disc-shaped parts according to claim 1, characterized in that: The surface of the table base (3) is connected with a rotating device, and the rotating device includes a supporting mechanism (6), a fixing mechanism (7) and a rotating mechanism (8). The supporting mechanism (6) includes a base (61), a sliding rod (62), a turntable (63) and a pressing block (64) symmetrically arranged with the table base (3). The turntable (63) is rotatably connected to the upper surface of the base (61), and the standard parts are placed on the upper surface of the turntable (63). The surface of the base (61) is provided with a through installation groove. The sliding rod (62) is provided with two groups, and one end of the two groups of sliding rods (62) is symmetrically connected to the surface of the table base (3) and the pressing block (64) respectively, and the other end of the two groups of sliding rods (62) extends into the installation groove and is slidably connected to the inner wall thereof. A driving assembly (9) is installed in the installation groove, and the driving assembly (9) drives two sets of sliding rods (62) to drive the table base (3) and the pressure block (64) to move simultaneously. The fixing mechanism (7) is connected to the surface of the rotating mechanism (8) and is used to fix the standard part. The rotating mechanism (8) is connected to the surface of the base (61) and cooperates with the fixing mechanism (7) to drive the standard part to rotate.

5. A detection fixture for disc-shaped parts according to claim 4, characterized in that: The driving assembly (9) comprises a driving member (91), a double-headed screw (92) and a sliding block (93); the driving member (91) is connected in the mounting groove; the sliding blocks (93) are provided in two groups; the two groups of sliding blocks (93) are both connected to the surface of the double-headed screw (92) and are symmetrically arranged; the driving member (91) drives the double-headed screw (92) to rotate; the two groups of sliding blocks (93) are respectively connected to the two groups of sliding bars (62).

6. A detection fixture for disc-shaped parts according to claim 4, characterized in that: The rotating mechanism (8) comprises a connecting plate (81), a ratchet (82), a pawl (83), a column (84) and a trigger block (85); a through hole is provided on the surface of one end of the connecting plate (81) away from the base (61); the column (84) is slidably connected to the inner wall of the hole and is perpendicular to the upper surface of the base (61); the trigger block (85) is connected to the upper end surface of the column (84); the ratchet (82) is sleeved on the surface of the column (84) near the lower end; the pawl (83) is rotatably connected to the surface of the connecting plate (81) through a rotating shaft and cooperates with the ratchet (82); and the fixing mechanism (7) is fixedly connected to the lower end surface of the column (84).

7. A detection fixture for disc-shaped parts according to claim 6, characterized in that: The fixing mechanism (7) comprises a shell (71), a pressure plate (72), a connecting rod (73), a limiting plate (74), a limiting block (75) and a second driving member (76). The pressure plate (72) is provided with at least two groups. The connecting rod (73) is connected to the pressure plate (72) correspondingly. The limiting plate (74) is fixedly connected to the driving end of the second driving member (76). The second driving member (76) is connected to the inner wall of the shell (71). The surface of the limiting plate (74) is provided with an arc groove (77). The limiting block (75) is slidably connected in the arc groove (77). The surface of the shell (71) is provided with a sliding groove corresponding to the pressure plate (72). The connecting rod (73) passes through the sliding groove and slides along the inner wall of the sliding groove. One end of the connecting rod (73) located inside the shell (71) is connected to the limiting block (75).

8. The inspection tool for disc-shaped parts according to claim 7, characterized in that: The upper surface of the rotating disk (63) is provided with a card slot, and the lower surface of the shell (71) is connected with a card block (10), and the card block (10) can be inserted into the card slot to connect the shell (71) and the rotating disk (63).

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