Detection and correction equipment for feeding screw

Abstract

The utility model relates to the technical field of screw detection equipment, in particular to detection and correction equipment for a feeding screw. Comprising a workbench, a screw rod clamping jaw is arranged on the workbench, the device further comprises a thread meter unit, an outer contour detection unit and a correction unit, and the thread meter unit is in sliding fit with the workbench through a linear module; the outer contour detection unit is in sliding fit with the workbench, and the correction unit is in sliding fit with the workbench; the outer contour detection unit comprises a blade outer circle detection plate, a Y-axis guide rail and an X-axis guide rail, and the blade outer circle detection plate slides along the Y-axis guide rail; the Y-axis guide rail and the X-axis guide rail are connected through an X-axis sliding plate, and the X-axis sliding plate is in sliding fit with the X-axis guide rail; an annular hole is formed in the blade outer circle detection plate, the X-axis sliding plate is connected with a scale pointer, and the scale pointer points to scales on the blade outer circle detection plate after penetrating through the annular hole. According to the utility model, the detection of the screw rod diameter and the blade outer diameter is realized, the screw rod diameter can be corrected, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of screw testing equipment, specifically a testing and correction device for a feeding screw. Background Technology

[0002] Current screw inspection methods are purely manual, lacking dedicated tooling for dimensional and runout detection; similarly, there is no dedicated tooling for correcting excessive screw runout. Without inspection and correction tooling, screw dimensions and runout cannot be accurately detected, and correction after runout exceeds tolerances is inconvenient and uncontrollable. Subsequent screw feeding is prone to interference and inaccurate feeding. Therefore, achieving rapid and accurate detection and correction of screw dimensions and runout in production is a technical problem that needs to be solved. Utility Model Content

[0003] The problem to be solved is to provide a device for rapid and accurate detection and correction of screw dimensions and runout.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detection and correction device for a feeding screw, comprising a worktable with screw grippers, a screw gauge unit, an outer contour detection unit, and a correction unit. The screw gauge unit is slidably engaged with the worktable via a linear module; the outer contour detection unit and the correction unit are slidably engaged with the worktable; the outer contour detection unit includes a blade outer circle detection plate, a Y-axis guide rail, and an X-axis guide rail, with the blade outer circle detection plate sliding along the Y-axis guide rail; the Y-axis guide rail and the X-axis guide rail are connected via an X-axis sliding plate, which is slidably engaged with the X-axis guide rail; the blade outer circle detection plate has an annular hole, and a scale pointer is connected to the X-axis sliding plate, with the pointer's arrow passing through the annular hole and pointing to the scale on the blade outer circle detection plate.

[0005] Preferably, the worktable is provided with a first correction guide rail and a second correction guide rail at intervals, the linear module is set on the outside of the first correction guide rail, and the outer contour detection unit is set on one side of the second correction guide rail.

[0006] Preferably, the ball screw unit is connected to the ball screw assembly via a connecting plate. The ball screw assembly includes a second handwheel, a ball screw, and a screw slider. The second handwheel is located at one end of the ball screw, and the screw slider is connected to the connecting plate.

[0007] Preferably, the screw clamp is provided with a three-jaw indexing plate on the fixed side, and the three-jaw indexing plate is connected to a handwheel.

[0008] Preferably, the worktable is provided with correction support units at intervals. Each correction support unit includes a correction support block and a lower ejector pin located on the correction support block. The correction support block is slidably engaged with the worktable, and the lower ejector pin is engaged with the diameter of the screw to be inspected.

[0009] Preferably, the X-axis guide rail is connected to the second correction guide rail via an X-axis mounting plate; the X-axis sliding plate slides with the X-axis guide rail via an X-axis slider at its bottom; the Y-axis guide rail is connected to the X-axis sliding plate via a Y-axis mounting plate; the blade outer circle detection plate slides with the Y-axis guide rail via a Y-axis slider, and a limiting plate is provided on the blade outer circle detection plate.

[0010] Preferably, the correction unit includes a correction plate with protrusions on both sides of the bottom and a through hole in the middle; a knob pressure rod is provided on the top of the correction plate, and the correction plate is connected to an upper pin, which extends into the through hole and engages with the screw to be inspected.

[0011] Preferably, the wire meter unit includes a magnetic base, a primary connecting rod, a secondary connecting rod, and a wire meter connected in sequence, with the magnetic base connected to the linear module via a wire meter slide.

[0012] Compared with the prior art, this utility model provides a detection and correction device for a feeding screw, which has the following beneficial effects:

[0013] 1. The screw clamps enable quick clamping of the screw to be tested;

[0014] 2. The outer contour detection unit enables rapid detection of the screw's external dimensions and improves accuracy;

[0015] 2. The screw gauge unit, in conjunction with the linear module and ball screw assembly, can accurately detect the screw diameter based on the screw lead, thereby improving detection efficiency;

[0016] 3. It can realize the overall runout detection along the entire length of the screw;

[0017] 4. The correction unit realizes screw runout correction and can control the precise correction range. Attached Figure Description

[0018] Figure 1 This is an isometric schematic diagram of the present invention;

[0019] Figure 2 This is an isometric view of the present invention from another angle;

[0020] Figure 3 This is the right view of the present invention;

[0021] Figure 4 This is a schematic diagram of the outer contour detection unit of this utility model;

[0022] Figure 5 This is a schematic diagram of the correction unit of this utility model;

[0023] Figure 6 This is a schematic diagram of the outer contour detection unit of this utility model;

[0024] Figure 7This is a schematic diagram illustrating the detection principle of this utility model;

[0025] Explanation of reference numerals in the attached drawings: 1. Worktable; 11. Correction guide rail one; 12. Correction guide rail two; 13. Worktable panel; 2. Screw gripper; 21. Handwheel one; 3. Correction support unit; 31. Correction support block; 32. Lower ejector pin; 4. Outer contour detection unit; 41. X-axis mounting plate; 42. X-axis guide rail; 43. X-axis sliding plate; 431. X-axis slider; 44. Y-axis mounting plate; 45. Y-axis guide rail; 451. Y-axis slider; 46. Blade outer circle detection plate; 461. Annular hole; 47. Limiting plate; 48. Scale pointer; 5. Ball screw assembly; 51. Handwheel II; 52. Ball screw; 53. Screw slider; 6. Connecting plate; 61. Screw gauge slide; 7. Linear module; 71. Linear guide rail; 72. Linear slider; 8. Screw gauge unit; 81. Magnetic base; 82. Primary connecting rod; 83. Secondary connecting rod; 84. Screw gauge; 9. Correction unit; 91. Correction plate; 92. Protrusion; 93. Through hole; 94. Upper ejector pin; 95. Knob lever; 10. Screw to be inspected. Detailed Implementation

[0026] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0027] To address the problems in the background art, this utility model provides a detection and correction device for a feeding screw, as shown in the figure. It includes a workbench 1, on which a first correction guide rail 11, a second correction guide rail 12, and a workbench panel 13 are provided. The first correction guide rail 11 and the second correction guide rail 12 are spaced apart on the workbench panel 13, and each of the first correction guide rail 11 and the second correction guide rail 12 has a sliding groove at a relative position. The workbench 1 also includes a screw clamp 2, a correction support unit 3, a wire gauge unit 8, an outer contour detection unit 4, and a correction unit 9. One end of the screw clamp 2 on the workbench 1 is used to clamp and fix the screw 10 to be inspected. A three-jaw indexing plate is provided on the clamping side of the screw clamp 2, and a handwheel 21 is connected to the three-jaw indexing plate. The handwheel 21 is installed on the outer edge of the screw clamp 2, and rotating the handwheel 21 can drive the screw 10 to be inspected to rotate. The correction support unit 3 includes a correction support block 31 and a lower ejector pin 32 located on the correction support block 31. Two correction support units 3 are spaced apart on the worktable 1. The correction support block 31 of the correction support unit 3 slides with the worktable 1 through the grooves of the first correction guide rail 11 and the second correction guide rail 12. The lower ejector pin 32 is matched with the diameter of the screw 10 to be inspected. The correction support unit 3 is used to support the screw 10 to be inspected.

[0028] The wire gauge unit 8 is slidably connected to the worktable 1 via the linear module 7. The wire gauge unit 8 includes a magnetic base 81, a primary connecting rod 82, a secondary connecting rod 83, and a wire gauge 84 connected in sequence. The magnetic base 81 is connected to the linear slider 72 of the linear module 7 via the wire gauge slide 61. The linear module 7 also includes a linear guide rail 71, which is positioned on one side of the correction guide rail 11 and parallel to it. The linear slider 72 slides along the linear guide rail 71. Pushing the wire gauge slide 61 moves the wire gauge unit 8 in the X-axis direction, such as... Figure 7 As shown, the X-axis direction is the length direction of the screw 10 to be inspected, and the Y-axis direction is perpendicular to the first straightening guide rail 11 and the second straightening guide rail 12. The dial indicator slide 61 is connected to the ball screw assembly 5 through the connecting plate 6. The ball screw assembly 5 includes a second handwheel 51, a ball screw 52, ​​and a screw slider 53. The second handwheel 51 is located at one end of the ball screw 52. The screw slider 53 is connected to the connecting plate 6. The screw slider 53 drives the connecting plate 6 to move in the X-axis direction, thereby realizing the precise displacement of the dial indicator unit 8.

[0029] The outer contour detection unit 4 is located on one side of the correction guide rail 12 and slides in cooperation with the worktable 1. The outer contour detection unit 4 includes a blade outer circle detection plate 46, a Y-axis guide rail 45, and an X-axis guide rail 42. The blade outer circle detection plate 46 slides along the Y-axis guide rail 45. The Y-axis guide rail 45 and the X-axis guide rail 42 are connected by an X-axis sliding plate 43, which slides in cooperation with the X-axis guide rail 42. The blade outer circle detection plate 46 is provided with an annular hole 461. The X-axis sliding plate 43 is connected to a scale pointer 48. The pointing arrow of the scale pointer 48 passes through the annular hole 461 and points to the scale on the blade outer circle detection plate 46. The X-axis guide rail 42 is connected to the second correction guide rail 12 via the X-axis mounting plate 41; the X-axis sliding plate 43 slides with the X-axis guide rail 42 via the X-axis slider 431 at its bottom; the Y-axis guide rail 45 is connected to the X-axis sliding plate 43 via the Y-axis mounting plate 44; the blade outer circle detection plate 46 slides with the Y-axis guide rail 45 via the Y-axis slider 451 and a limiting plate 47 is provided on the blade outer circle detection plate 46.

[0030] The straightening unit 9 is slidably engaged with the worktable 1; the straightening unit 9 includes a straightening plate 91, with protrusions 92 on both sides of the bottom of the straightening plate 91, and a through hole 93 in the middle of the straightening plate 91, through which the screw 10 to be inspected can pass; a knob pressure rod 95 is provided on the top of the straightening plate 91, and the straightening plate 91 is connected to an upper ejector pin 94, which extends into the through hole 93 and engages with the rod diameter of the screw 10 to be inspected.

[0031] like Figure 7The diagram shows the detection principle of the device of this utility model. L1 is the axis of the screw 10 to be inspected, with the edge of the blade outer circle detection plate 46 as the reference. L2 is the reference of the edge of the blade outer circle detection plate 46. The distance between L1 and L2 is D. The initial distance D = 70mm between the edge of the blade outer circle detection plate 46 and the axis of the screw 10 to be inspected. The starting scale mark of the blade outer circle detection plate 46 is 70mm. The initial position of the indicator arrow is 70mm. The distance that the blade outer circle detection plate 46 moves in the Y-axis direction during the inspection process is indicated by the right side of the indicator arrow, which indicates the radius scale value of the blade of the screw 10 to be inspected. The position indicated by the left side of the indicator arrow is the diameter scale value of the blade of the screw 10 to be inspected. The diameter scale value is a calculated value and does not need to be calculated manually.

[0032] n1 is the rotational speed (r / min) of handwheel 21, n2 is the rotational speed (r / min) of handwheel 51, i is the speed ratio of the three-jaw indexing plate, S1 is the lead of the screw 10 to be tested, and S2 is the lead of the ball screw 52. By adjusting handwheel 21 and handwheel 51, n2*i = (S1 / S2)*n1, the screw gauge 84 can be prevented from being blocked by the blades, and the diameter of the screw 10 to be tested can be detected at a suitable speed.

[0033] The operating procedure for this utility model device is as follows:

[0034] 1. Fix the screw 10 to be inspected onto the screw clamp 2. Adjust the outer contour detection unit 4 to push the blade outer diameter detection plate 46 to move on the Y-axis guide rail 45. When the blade outer diameter detection plate 46 contacts the blade, read the scale indicated by the indicator arrow to detect the diameter of the screw 10 to be inspected. Adjust the handwheel 21 to detect different positions of different blades. Move the X-axis sliding plate 43 to move the blade outer diameter detection plate 46 on the X-axis guide rail 42 to detect the diameter of different blades. Mark the positions of the blades according to their diameter and perform grinding.

[0035] 2. Adjust the position of the dial indicator 84 through the first-stage connecting rod 82 and the second-stage connecting rod 83 to prepare for the screw diameter runout detection. Slide the dial indicator slide 61 and adjust the runout within the full size range using handwheel 51 and handwheel 21, and record the results. Use a red marker to record the runout deviation locations.

[0036] 3. If the runout exceeds the tolerance, place the correction unit 9 in a reasonable position, adjust the handwheel 21 and adjust the knob lever 95 to a suitable position, rotate the down knob lever 95 and read the down pressure distance at the same time. After the adjustment is completed, repeat step 2 until the screw runout correction is within the tolerance range.

[0037] The screw clamp 2 of this invention enables rapid clamping of the screw 10 to be inspected. The screw clamp 2, in conjunction with the straightening support unit 3, ensures stable clamping of the screw 10. The outer contour detection unit 4 enables rapid and accurate detection of the screw's external dimensions. The lead gauge unit 8, in conjunction with the linear module 7 and the ball screw assembly 5, accurately detects the screw diameter based on the screw lead, improving detection efficiency. The movement of the lead gauge unit 8 enables overall runout detection across the entire length of the screw. The straightening unit 9 corrects the screw runout and can control the precise correction range. This invention not only detects the screw diameter and blade outer diameter but also corrects the screw diameter, greatly improving detection efficiency.

[0038] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A device for detecting and correcting a feeding screw, comprising a workbench (1) and screw grippers (2) on the workbench (1), characterized in that: It also includes a wire sheet unit (8), an outer contour detection unit (4), and a correction unit (9). The wire sheet unit (8) slides with the worktable (1) through a linear module (7). The outer contour detection unit (4) slides with the worktable (1), and the correction unit (9) slides with the worktable (1). The outer contour detection unit (4) includes a blade outer circle detection plate (46), a Y-axis guide rail (45), and an X-axis guide rail (42). Slide along the Y-axis guide rail (45); the Y-axis guide rail (45) and the X-axis guide rail (42) are connected by the X-axis sliding plate (43), and the X-axis sliding plate (43) and the X-axis guide rail (42) slide in cooperation; the blade outer circle detection plate (46) is provided with an annular hole (461), and the X-axis sliding plate (43) is connected to a scale pointer (48). The pointing arrow of the scale pointer (48) passes through the annular hole (461) and points to the scale on the blade outer circle detection plate (46).

2. The detection and correction device for the feeding screw as described in claim 1, characterized in that: The workbench (1) is provided with a first correction guide rail (11) and a second correction guide rail (12) at intervals. The linear module (7) is located on the outside of the first correction guide rail (11), and the outer contour detection unit (4) is located on one side of the second correction guide rail (12).

3. The detection and correction device for the feeding screw as described in claim 1, characterized in that: The ball screw unit (8) is connected to the ball screw assembly (5) via the connecting plate (6). The ball screw assembly (5) includes a second handwheel (51), a ball screw (52), and a screw slider (53). The second handwheel (51) is located at one end of the ball screw (52), and the screw slider (53) is connected to the connecting plate (6).

4. The detection and correction device for the feeding screw as described in claim 1, characterized in that: The screw clamp (2) has a three-jaw indexing plate on its fixed side, and the three-jaw indexing plate is connected to a handwheel (21).

5. The detection and correction device for the feeding screw as described in claim 1, characterized in that: The workbench (1) is provided with a correction support unit (3) at intervals. The correction support unit (3) includes a correction support block (31) and a lower ejector pin (32) located on the correction support block (31). The correction support block (31) is slidably engaged with the workbench (1), and the lower ejector pin (32) is engaged with the diameter of the screw (10) to be inspected.

6. The detection and correction device for the feed screw as described in claim 1, characterized in that: The X-axis guide rail (42) is connected to the second correction guide rail (12) via the X-axis mounting plate (41); the X-axis sliding plate (43) is slidably engaged with the X-axis guide rail (42) via the X-axis slider (431) at its bottom; the Y-axis guide rail (45) is connected to the X-axis sliding plate (43) via the Y-axis mounting plate (44); the blade outer circle detection plate (46) is slidably engaged with the Y-axis guide rail (45) via the Y-axis slider (451) and a limiting plate (47) is provided on the blade outer circle detection plate (46).

7. The detection and correction device for the feed screw as described in claim 1, characterized in that: The correction unit (9) includes a correction plate (91), with protrusions (92) on both sides of the bottom of the correction plate (91) and a through hole (93) in the middle of the correction plate (91); a knob pressure rod (95) is provided on the top of the correction plate (91), and the correction plate (91) is connected to an upper ejector pin (94), which extends into the through hole (93) and engages with the screw (10) to be inspected.

8. The detection and correction device for the feed screw as described in claim 1, characterized in that: The wire table unit (8) includes a magnetic base (81), a primary connecting rod (82), a secondary connecting rod (83) and a wire table (84) connected in sequence. The magnetic base (81) is connected to the linear module (7) through the wire table slide (61).

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