Shaft part curved surface groove comprehensive detection tool and detection method

Abstract

The invention discloses a comprehensive testing fixture for a curved surface groove of a shaft part. A testing fixture supporting mechanism comprises a base, and a pedestal and a supporting block are connected to the base; the axial reference block is in sliding fit with the base, an elastic piece A is connected between the axial reference block and the base, the reference block is connected with a handle, and the clamp is connected to the supporting block. The bottom plate is in sliding fit with the base, and a fixing block is connected to the bottom plate; one end of the circumferential reference block is of a profiling structure, and an elastic piece B is connected between the circumferential reference block and the bottom plate; the first dial indicator is connected to the bottom plate, and a measuring head of the first dial indicator is in contact with the circumferential reference block; the second dial indicator is connected to the fixing seat, the bottom plate is connected with an axial detection reference block, and a measuring head of the second dial indicator is in contact with the axial detection reference block. Radial and axial rapid positioning is carried out on the curved surface groove, a three-base-plane detection reference system is accurately established, the detection mechanism carries out radial and axial detection on detected elements in the curved surface groove, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inspection tools, and in particular to a comprehensive inspection tool for curved surface grooves of shaft parts and a detection method. Background Art

[0002] Shaft parts are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission components, transmit torque and bear loads.

[0003] like Figure 1 As shown, the outer cylindrical surface of the shaft part has a flange and a curved groove. According to the drawing requirements, the radial (X in the figure) and axial (Y in the figure) precision requirements must be controlled. The machining center performs irregular surface milling, which is a great challenge to the machining process capability. Based on the current performance of the equipment process capability analysis and planning, the inspection frequency needs to be set to 20 pieces / time, and the inspection method is three-coordinate point inspection.

[0004] However, the existing three-coordinate point sampling detection has the following problems: the three-coordinate equipment is expensive; the skill matrix of the detection personnel is high; the detection cycle of the curved groove of the workpiece is long, and the detection results cannot be quickly used to guide on-site processing adjustments.

[0005] Therefore, the existing detection methods have low efficiency and high investment costs, and obviously cannot meet current production needs. Summary of the invention

[0006] The purpose of the present invention is to provide a comprehensive inspection fixture and inspection method for curved surface grooves of shaft parts, which can quickly locate the curved surface grooves in radial and axial directions, accurately establish a three-base surface inspection reference system, and the inspection mechanism can perform radial and axial inspection on the measured elements in the curved surface grooves, thereby greatly improving the inspection efficiency and solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A comprehensive inspection tool for curved surface grooves of shaft parts, comprising an inspection tool support mechanism, an axial positioning mechanism, a radial positioning mechanism and a detection mechanism; the inspection tool support mechanism comprises a base, and the axial positioning mechanism, the radial positioning mechanism and the detection mechanism are connected to the base; the axial positioning mechanism comprises an axial reference block and a base, and the base is connected to the base; the axial reference block is slidably matched with the base, an elastic member A is connected between the axial reference block and the base, and a handle is connected to the reference block; the radial positioning mechanism comprises a support block and a clamp, the support block is connected to the base, and the clamp is connected to the support block ; The detection mechanism includes a first micrometer, a second micrometer, a circumferential reference block and a base plate, the base plate is slidably fitted in the base, and a fixed block is connected to the base plate; one end of the circumferential reference block is a contoured structure, the circumferential reference block is slidably fitted in the fixed block, and an elastic part B is connected between the circumferential reference block and the base plate; the first micrometer is connected to the base plate, and the probe of the first micrometer is in contact with the circumferential reference block; a fixed seat is connected to the base, the second micrometer is connected to the fixed seat, an axial detection reference block is connected to the base plate, and the probe of the second micrometer is in contact with the axial detection reference block.

[0008] A further solution of the present invention is that an axial step hole is provided on the base, the positioning shaft is connected to one end of the step hole, the axial reference block is slidably fitted in the other end of the step hole, and an accommodating hole is provided at one end of the axial reference block close to the positioning shaft.

[0009] A further solution of the present invention is that an L-shaped limiting groove is provided at the top of the base, and the limiting groove passes through the step hole; the handle is slidably fitted in the limiting groove, and the handle is threadedly connected to the axial reference block.

[0010] A further solution of the present invention is that the elastic member A is a spring A, the spring A is placed in the receiving hole, and the spring A is sleeved on the outer wall of the positioning shaft.

[0011] A further solution of the present invention is that a V-shaped groove is provided at the top of the support block, and the clamp is a vertical clamp located at the side of the V-shaped groove.

[0012] A further solution of the present invention is that a linear guide rail is connected to the base, and the bottom plate is connected to a slide seat of the linear guide rail.

[0013] A further solution of the present invention is that a sliding groove is provided on the fixed block, the circumferential reference block is slidably fitted in the sliding groove, a clamp seat is connected to the bottom of the base plate, the first micrometer is connected to the clamp seat, and the probe of the first micrometer passes through the base plate and extends to the inside of the sliding groove to abut against the bottom end of the circumferential reference block.

[0014] A further solution of the present invention is that the elastic member B is a spring B, the spring B is accommodated in the slide groove, and the upper and lower ends of the spring B are in contact with the circumferential reference block and the bottom plate respectively.

[0015] A further solution of the present invention is that a limiting rod is connected to the bottom plate, a limiting groove is provided on the bottom plate, the limiting rod extends into the limiting groove, and a plurality of equal-height blocks are connected to the bottom of the bottom plate.

[0016] Beneficial effects of the present invention: The comprehensive inspection fixture and inspection method for curved surface grooves of shaft parts of the present invention can quickly locate the curved surface grooves in radial and axial directions, accurately establish a three-base surface inspection reference system, and the inspection mechanism can perform radial and axial inspection on the inspected elements in the curved surface grooves, thereby greatly improving the inspection efficiency.

[0017] The shaft part curved surface groove comprehensive inspection fixture and inspection method of the present invention adopts a vertical clamp, which can quickly and conveniently clamp or release the shaft part.

[0018] The invention relates to a shaft part curved surface groove comprehensive inspection fixture and inspection method. A limit rod is connected to a bottom plate. A limit groove is provided on the bottom plate. The limit rod extends into the limit groove, and can start the axial movement of the inspection mechanism.

[0019] The invention relates to a shaft-type component curved surface groove comprehensive inspection tool and inspection method. The bottom of the bottom plate is connected with a plurality of equal-height blocks to adjust the level of the inspection tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of shaft parts.

[0021] Figure 2 It is an overall axonometric view of the present invention in working state.

[0022] Figure 3 It is a partial cross-sectional view of the present invention in working state.

[0023] Figure 4 It is a partial cross-sectional view of the present invention in the standby state.

[0024] Figure 5 It is an axonometric view of the axial positioning mechanism of the present invention.

[0025] Figure 6 It is an axonometric view of the radial positioning mechanism of the present invention.

[0026] Figure 7 It is an axonometric diagram of the detection mechanism of the present invention.

[0027] Figure 8 It is a partial cross-sectional view of the detection mechanism of the present invention.

[0028] In the figure: 1-handle, 2-positioning shaft, 3-spring A, 4-axial reference block, 5-base, 6-base, 7-equal height block, 8-axis parts, 801-flange, 802-curved groove, 9-support block, 10-vertical clamp, 11-circumferential reference block, 12-fixed block, 13-axial detection reference block, 14-fixed seat, 15-second micrometer, 16-base plate, 17-linear guide, 18-limit rod, 19-clamp seat, 20-first micrometer, 21-spring B. DETAILED DESCRIPTION

[0029] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments.

[0030] Example 1: Figures 1 to 8 As shown, a comprehensive inspection tool for curved surface grooves of shaft parts includes an inspection tool support mechanism, an axial positioning mechanism, a radial positioning mechanism and a detection mechanism; the inspection tool support mechanism includes a base 6, and the axial positioning mechanism, the radial positioning mechanism and the detection mechanism are connected to the base 6; the axial positioning mechanism includes an axial reference block 4 and a base 5, and the base 5 is connected to the base 6; the axial reference block 4 is slidably matched with the base 5, and an elastic member A is connected between the axial reference block 4 and the base 5, and a handle 1 is connected to the reference block; the radial positioning mechanism includes a support block 9 and a clamp, the support block 9 is connected to the base 6, and the clamp is connected to the support block 9; the detection mechanism includes a first micrometer 2 0, the second micrometer 15, the circumferential reference block 11 and the bottom plate 16, the bottom plate 16 is slidably fitted on the base 6, and the bottom plate 16 is connected to the fixed block 12; one end of the circumferential reference block 11 is a contoured structure, the circumferential reference block 11 is slidably fitted on the fixed block 12, and an elastic member B is connected between the circumferential reference block 11 and the bottom plate 16; the first micrometer 20 is connected to the bottom plate 16, and the probe of the first micrometer 20 is in contact with the circumferential reference block 11; the base 6 is connected to the fixed seat 14, the second micrometer 15 is connected to the fixed seat 14, the bottom plate 16 is connected to the axial detection reference block 13, and the probe of the second micrometer 15 is in contact with the axial detection reference block 13.

[0031] The base 5 is provided with an axial stepped hole, the positioning shaft 2 is connected to one end of the stepped hole, the axial reference block 4 is slidably fitted in the other end of the stepped hole, and the axial reference block 4 is provided with a receiving hole at one end close to the positioning shaft 2 .

[0032] An L-shaped limiting groove is provided at the top of the base 5 , and the limiting groove passes through the step hole; the handle 1 is slidably fitted in the limiting groove, and the handle 1 is threadedly connected to the axial reference block 4 .

[0033] The elastic member A is a spring A3 . The spring A3 is placed in the receiving hole, and the spring A3 is sleeved on the outer wall of the positioning shaft 2 .

[0034] A V-shaped groove is provided at the top of the support block 9, and the clamp is a vertical clamp 10, which is located at the side of the V-shaped groove.

[0035] A linear guide rail 17 is connected to the base 6 , and the bottom plate 16 is connected to a slide seat of the linear guide rail 17 .

[0036] A slide groove is provided on the fixed block 12, and the circumferential reference block 11 is slidably fitted in the slide groove. A clamp seat 19 is connected to the bottom of the base plate 16, and the first micrometer 20 is connected to the clamp seat 19. The probe of the first micrometer 20 passes through the base plate 16 and extends to the inside of the slide groove to abut against the bottom end of the circumferential reference block 11.

[0037] The elastic member B is a spring B21 , which is accommodated in the slide groove, and the upper and lower ends of the spring B21 are in contact with the circumferential reference block 11 and the bottom plate 16 respectively.

[0038] A limiting rod 18 is connected to the bottom plate 16 , a limiting groove is provided on the bottom plate 16 , the limiting rod 18 extends into the limiting groove, and four equal-height blocks 7 are connected to the bottom of the bottom plate 16 .

[0039] Design principle of the present invention: Axial positioning mechanism - handle 1: accommodated in the base 5, bolted to the axial reference block 4; moves in the limiting groove of the base 5, so as to control the operation and reset of the axial reference block 4.

[0040] Axial positioning mechanism - positioning shaft 2: fixed to the base 5; plays a limiting and guiding role when the spring A3 is reset.

[0041] Axial positioning mechanism - spring A3: accommodated in the axial reference block 4; relies on the base 5 to apply force to the axial reference block 4, driving the axial reference block 4 to work.

[0042] Axial positioning mechanism - axial reference block 4: accommodated in the base 5; after being acted upon by the spring A3, the shaft part 8 is axially fixed to establish an axial detection coordinate system.

[0043] Axial positioning mechanism - base 5: fixed to the base 6, accommodating the handle 1, the positioning shaft 2, the spring A3, and the axial reference block 4; it plays a bearing role in the operation of the axial positioning mechanism.

[0044] The inspection tool support mechanism - base 6: connected to the equal height block 7, fixed base 5, support block 9, bottom plate 16, fixed seat 14; plays a supporting role for the operation of the inspection tool.

[0045] Gauge support mechanism - equal height block 7: connected to the base 6; evenly distributed on the gauge to adjust the level of the gauge.

[0046] Shaft parts 8: The outer cylindrical surface has a flange 801 and a curved groove 802.

[0047] Radial positioning mechanism - support block 9: fixed to the base 6, connected to the vertical clamp 10, with a V-shaped groove inside to accommodate the shaft parts 8; when the vertical clamp 10 is working, it bears radial pressure, and the V-shaped groove cooperates with the shaft parts 8 to establish a radial detection coordinate system.

[0048] Radial positioning mechanism - vertical clamp 10: connected to the support block 9; applies radial force to the shaft part 8.

[0049] Detection mechanism - circumferential reference block 11: accommodated in the fixed block 12, under the thrust of the first micrometer 20, in working state, floating contact clamp seat 19; the curved surface profiling structure cooperates with the shaft part 8 to establish a circumferential detection coordinate system.

[0050] Detection mechanism - fixed block 12: connected to the bottom plate 16, accommodating the circumferential reference block 11 and the spring B21; plays a limiting role on the circumferential reference block 11.

[0051] Detection mechanism—axial detection reference block 13: connected to the base plate 16, floatingly contacting the second micrometer 15; the axial movement distance of the transmission detection mechanism is the second micrometer 15.

[0052] Detection mechanism—fixed seat 14: connected to the base 6, connected to the second micrometer 15.

[0053] Detection mechanism - the second micrometer 15: connected to the fixed seat 14, floating contact with the axial detection reference block 13; displays the axial detection value of the shaft part 8.

[0054] Detection mechanism--base plate 16: connected to the linear guide rail 17, connected to the fixed block 12, the axial detection reference block 13, the fixed seat 14, and the second micrometer 15; Detection mechanism - linear guide 17: connected to the base 6 and the bottom plate 16; controls the detection mechanism to perform reciprocating linear motion in a given direction.

[0055] Detection mechanism - limit rod 18: connected to the bottom plate 16, accommodated in the base 6; has the function of starting the axial movement of the detection mechanism.

[0056] Detection mechanism—clamp seat 19: connected to the bottom plate 16, connected to the first micrometer 20.

[0057] Detection mechanism - the first micrometer 20: connected to the clamping seat 19, floating contact with the circumferential reference block 11; displays the radial detection value of the shaft part 8.

[0058] Detection mechanism - spring B21: accommodated in the fixed block 12; relying on the bottom plate 16 to apply force to the circumferential reference block 11, driving the circumferential reference block 11 to work.

[0059] The working principle of the present invention is: 1: The operator inserts the curved groove 802 on the right end of the shaft part 8 into the circumferential reference block 11 to establish a circumferential detection coordinate system; the left end of the shaft part 8 is placed in the V-groove of the support block 9 for pre-positioning.

[0060] Second: Tighten the vertical clamp 10 to make the shaft diameter of the shaft part 8 fit tightly with the V-groove of the support block 9 to establish a radial coordinate system; the shaft part 8 simultaneously drives the circumferential reference block 11 to move downward in the fixed block 12; the circumferential reference block 11 floats and contacts the first micrometer 20 to transfer the pressure to the first micrometer 20.

[0061] Three: Rotate the handle 1 to disengage it from the limiting groove of the base 5 to release the restriction on the axial positioning mechanism.

[0062] Four: The handle 1 is connected to the axial reference block 4 and relies on the tension of the spring A3 to push the axial reference block 4 to move axially in the stepped hole of the base 5, so that the right end face of the axial reference block 4 fits with the left end face of the shaft part 8, thereby driving the shaft part 8 and the detection mechanism to move to the right; until the flange 801 surface of the shaft part 8 fits with the left end reference surface of the base 5, and the axial detection coordinate system is established.

[0063] 5: The detection mechanism moves rightward under the drive of the axial positioning mechanism, and the axial detection reference block 13 of the detection mechanism floats and contacts the second micrometer 15 , transmitting the pressure to the second micrometer 15 .

[0064] 6: So far, the inspection fixture has established a complete circumferential, radial and axial three-base surface detection reference system; the radial dimension of the curved groove 802 of the shaft part 8 can be read on the first micrometer 20; the axial dimension of the curved groove 802 of the shaft part 8 can be read on the second micrometer 15.

[0065] Seven: Move the handle 1 axially to the left and rotate it to fit into the limiting groove of the base 5, and simultaneously drive the axial reference block 4 to reset; the spring A3 is stored in the stepped hole of the base 5 under the guidance of the positioning shaft 2.

[0066] 8. Release the vertical clamp 10, and the operator takes out the shaft part 8; it automatically resets under the tension of the spring B21, and the level of the detection mechanism returns to the previous state; at this point, the detection operation is completed.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A comprehensive inspection tool for curved grooves of shaft parts, characterized by: The invention comprises a gauge support mechanism, an axial positioning mechanism, a radial positioning mechanism and a detection mechanism; the gauge support mechanism comprises a base (6), and the axial positioning mechanism, the radial positioning mechanism and the detection mechanism are connected to the base (6); the axial positioning mechanism comprises an axial reference block (4) and a base (5), and the base (5) is connected to the base (6); the axial reference block (4) is slidably matched with the base (5), an elastic member A is connected between the axial reference block (4) and the base (5), and a handle (1) is connected to the reference block; the radial positioning mechanism comprises a support block (9) and a clamp, and the support block (9) is connected to the base (6), and the clamp is connected to the support block (9); the detection mechanism comprises a first micrometer (20), a second micrometer (15), a circumferential reference block (11) and a bottom plate (16), the bottom plate (16) is slidably matched with the base (6), and the bottom plate (16) is connected to a fixed block (12); one end of the circumferential reference block (11) is a contoured structure, the circumferential reference block (11) is slidably matched with the fixed block (12), and an elastic member B is connected between the circumferential reference block (11) and the bottom plate (16); the first micrometer (20) is connected to the bottom plate (16), and the probe of the first micrometer (20) contacts the circumferential reference block (11); the base (6) is connected to a fixed seat (14), the second micrometer (15) is connected to the fixed seat (14), the bottom plate (16) is connected to an axial detection reference block (13), and the probe of the second micrometer (15) contacts the axial detection reference block (13).

2. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 1, characterized in that: The base (5) is provided with an axial step hole, the positioning shaft (2) is connected to one end of the step hole, the axial reference block (4) is slidably fitted to the other end of the step hole, and the axial reference block (4) is provided with a receiving hole at one end close to the positioning shaft (2).

3. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 2, characterized in that: An L-shaped limiting groove is provided at the top of the base (5), and the limiting groove passes through the step hole; the handle (1) is slidably fitted in the limiting groove, and the handle (1) is threadedly connected to the axial reference block (4).

4. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 2, characterized in that: The elastic member A is a spring A (3), the spring A (3) is placed in the receiving hole, and the spring A (3) is sleeved on the outer wall of the positioning shaft (2).

5. A comprehensive inspection tool for curved surface grooves of shaft parts as claimed in claim 1, characterized in that: The top end of the support block (9) is provided with a V-shaped groove, and the clamp is a vertical clamp (10), and the vertical clamp (10) is located on the side of the V-shaped groove.

6. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 1, characterized in that: The base (6) is connected to a linear guide rail (17), and the bottom plate (16) is connected to a slide seat of the linear guide rail (17).

7. A comprehensive inspection tool for curved surface grooves of shaft parts as claimed in claim 6, characterized in that: The fixed block (12) is provided with a slide groove, the circumferential reference block (11) is slidably engaged in the slide groove, the bottom of the base plate (16) is connected to a clamp seat (19), the first micrometer (20) is connected to the clamp seat (19), and the probe of the first micrometer (20) passes through the base plate (16) and extends into the slide groove to abut against the bottom end of the circumferential reference block (11).

8. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 7, characterized in that: The elastic member B is a spring B (21), which is accommodated in the slide groove, and the upper and lower ends of the spring B (21) are in contact with the circumferential reference block (11) and the bottom plate (16) respectively.

9. A comprehensive inspection tool for curved grooves of shaft parts as claimed in claim 1, characterized in that: The bottom plate (16) is connected to a limiting rod (18), a limiting groove is provided on the bottom plate (16), the limiting rod (18) extends into the limiting groove, and the bottom of the bottom plate (16) is connected to a plurality of equal-height blocks (7).

10. A method for detecting curved grooves on shaft parts, using the comprehensive inspection tool for curved grooves on shaft parts as claimed in any one of claims 1 to 9, characterized in that The steps include: Step 1: The operator inserts the curved groove (802) at the right end of the shaft part (8) into the circumferential reference block (11) to establish a circumferential detection coordinate system; the left end of the shaft part (8) is placed in the V-shaped groove of the support block (9) for pre-positioning; Step 2: Tighten the vertical clamp (10) so that the shaft diameter of the shaft part (8) fits tightly with the V-groove of the support block (9) to establish a radial coordinate system; the shaft part (8) simultaneously drives the circumferential reference block (11) to move downward in the fixed block (12); the circumferential reference block (11) floats in contact with the first micrometer (20) to transmit pressure to the first micrometer (20); Step 3: Rotate the handle (1) to disengage it from the limiting groove of the base (5), thereby releasing the restriction on the axial positioning mechanism; Step 4: The handle (1) is connected to the axial reference block (4) and, relying on the tension of the spring A (3), pushes the axial reference block (4) to move axially in the stepped hole of the base (5), so that the right end surface of the axial reference block (4) fits with the left end surface of the shaft part (8), thereby driving the shaft part (8) and the detection mechanism to move rightward; until the flange (801) surface of the shaft part (8) fits with the left end reference surface of the base (5), and the axial detection coordinate system is established; Step 5: The detection mechanism moves rightward under the drive of the axial positioning mechanism, and the axial detection reference block (13) of the detection mechanism floats and contacts the second micrometer (15), transmitting the pressure to the second micrometer (15); Step 6: At this point, the inspection fixture has established a complete circumferential, radial, and axial three-base surface inspection reference system; the radial dimension of the curved surface groove (802) of the shaft part (8) can be read on the first micrometer (20); the axial dimension of the curved surface groove (802) of the shaft part (8) can be read on the second micrometer (15); Step 7: The handle (1) is rotated axially to the left and inserted into the limit groove of the base (5), and the axial reference block (4) is simultaneously driven to reset; the spring A (3) is stored in the stepped hole of the base (5) under the guidance of the positioning shaft (2); Step 8: Release the vertical clamp (10), and the operator takes out the shaft part (8); the shaft part (8) automatically resets under the tension of the spring B (21), and the horizontal position of the detection mechanism returns to the previous state; at this point, the detection operation is completed.

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