Error test fixture

Abstract

The utility model relates to the field of error detection of cylindrical parts, and provides an error detection clamp, which comprises a base and a positioning clamp, and the positioning clamp is arranged on the base. The device further comprises an advancing detection mechanism. The advancing detection mechanism comprises a driving handle, a driving threaded rod, an advancing base and a detector, the driving threaded rod is rotationally installed on the base, the driving handle is installed at one end of the driving threaded rod, an inner threaded hole is formed in the advancing base, and the detector is arranged in the inner threaded hole; the advancing base is connected to the driving threaded rod through an inner threaded hole, and the detector is installed on the advancing base; through the arrangement of the driving threaded rod and the advancing base, the detector can be driven to move axially under the driving of the driving threaded rod and the advancing base, meanwhile, the driving threaded rod and the rotating shaft share one driving handle, the structure is simple, the work is efficient, and the detection of the whole workpiece is realized.

Description

Technical Field

[0001] The utility model relates to the field of error inspection of cylindrical parts, in particular to an error inspection fixture. Background Art

[0002] For the coaxiality error detection of the inner hole of a cylindrical part, generally, the detection head is placed inside the cylinder for multi-point detection. During the detection process, it is judged whether the coaxiality is within the specified error range through the data display of the instrument. If any data exceeds the error range, it is unqualified.

[0003] The detection head generally performs multi-point detection. During the detection process, the entire axial detection is carried out by moving the detection head. However, the multi-point detection only detects the arcs on the same straight line and cannot perform the detection of the entire circumference. Summary of the Utility Model

[0004] The utility model provides an error inspection fixture. By setting a driving threaded rod and a traveling base, the detector can be driven to move axially under the drive of the driving threaded rod and the traveling base. At the same time, the driving threaded rod and the rotating shaft share a driving handle, with a simple structure and high working efficiency, realizing the detection of the entire workpiece.

[0005] The technical solution of the utility model is realized as follows:

[0006] An error inspection fixture, comprising: a base and a positioning fixture, and the positioning fixture is installed on the base;

[0007] It further includes a traveling detection mechanism;

[0008] The traveling detection mechanism includes a driving handle, a driving threaded rod, a traveling base and a detector. The driving threaded rod is rotatably installed on the base, the driving handle is installed at one end of the driving threaded rod, an internal threaded hole is provided on the traveling base, and the traveling base is connected to the driving threaded rod through the internal threaded hole. The detector is installed on the traveling base;

[0009] A limiting hole is provided on the traveling base, and a limiting guide rod is provided on the base. The limiting guide rod is sleeved in the limiting hole.

[0010] Further, the positioning fixture includes a fixed support seat and a limiting support seat. A first clamping block is provided on the fixed support seat, and a second clamping block is provided on the limiting support seat;

[0011] A rotating mechanism is provided on the positioning fixture. The rotating mechanism includes the driving handle, a first transmission wheel, a rotating shaft, a second transmission wheel and a transmission belt;

[0012] The rotating shaft is rotatably mounted on the fixed support base, and the first clamping block is connected to the end of the rotating shaft;

[0013] The first transmission wheel is sleeved on the driving threaded rod;

[0014] The second transmission wheel is sleeved on the rotating shaft;

[0015] The transmission belt is simultaneously sleeved on the first transmission wheel and the second transmission wheel.

[0016] Further, a key shaft is provided at the power end of the driving threaded rod, and the first transmission wheel is sleeved on the key shaft.

[0017] Furthermore, two limiting guide rods are symmetrically arranged, and correspondingly, two limiting holes are symmetrically arranged.

[0018] By providing the driving threaded rod and the traveling base, the utility model can drive the detector to perform axial movement under the drive of the driving threaded rod and the traveling base. At the same time, the driving threaded rod and the rotating shaft share a driving handle, with a simple structure and high working efficiency, realizing the detection of the entire workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 It is the front view of the overall structure of an error inspection fixture in a specific embodiment of the present invention;

[0021] Figure 2 For Figure 1 The left view of the overall structure of an error inspection fixture shown;

[0022] Figure 3 For Figure 1 、 Figure 2 The partial structural schematic diagram of the traveling detection mechanism of an error inspection fixture shown;

[0023] Figure 4 For Figure 1 、 Figure 2 The side view of the structure of the key shaft at the end of the driving threaded rod of an error inspection fixture shown;

[0024] Description of reference numerals: base 1; positioning fixture 2; fixed support base 21; first clamping block 211; limit support base 22; second clamping block 221; traveling detection mechanism 3; driving handle 31; driving threaded rod 32; key shaft 321; traveling base 33; internal threaded hole 331; limit hole 332; detector 34; rotating mechanism 4; first transmission wheel 41; rotating shaft 42; second transmission wheel 43; transmission belt 44. Detailed implementation manners

[0025] Next, embodiments of the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] In the specific embodiment of the present invention, see Figures 1-4 , an error inspection fixture, comprising: a base 1 and a positioning fixture 2, and the positioning fixture 2 is installed on the base 1;

[0027] It further includes a traveling detection mechanism 3. During the detection process, the traveling detection mechanism 3 always moves forward until the entire workpiece is detected.

[0028] The traveling detection mechanism 3 includes a driving handle 31, a driving threaded rod 32, a traveling base 33 and a detector 34. The driving threaded rod 32 is rotatably installed on the base 1. The driving handle 31 is installed at one end of the driving threaded rod 32. An internal threaded hole 331 is provided on the traveling base 33, and the traveling base 33 is connected to the driving threaded rod 32 through the internal threaded hole 331. The detector 34 is installed on the traveling base 33;

[0029] A limit hole 332 is provided on the traveling base 33, and a limit guide rod 11 is provided on the base 1. The limit guide rod 11 is sleeved in the limit hole 332, and the limit guide rod 11 is used to limit the forward direction of the traveling base 33;

[0030] During detection, hold the driving handle and rotate it, thereby driving the driving threaded rod to rotate. While the driving threaded rod rotates, it will drive the traveling base to move forward, thereby driving the detector to move forward, so that the detector performs the detection of the entire axis.

[0031] In the specific embodiment of the present invention, see Figures 1-4, the positioning fixture 2 includes a fixed support base 21 and a limit support base 22. A first clamping block 211 is provided on the fixed support base 21, and a second clamping block 221 is provided on the limit support base 22. The limit support base 22 can move. When the workpiece needs to be picked up and placed, the limit support base 22 is moved a certain distance;

[0032] A rotating mechanism 4 is provided on the positioning fixture 2. The rotating mechanism 4 is used to drive the workpiece to be detected to rotate, so as to perform error detection of the entire circumference;

[0033] The rotating mechanism 4 includes the driving handle 31, a first transmission wheel 41, a rotating shaft 42, a second transmission wheel 43 and a transmission belt 44;

[0034] The rotating shaft 42 is rotatably installed on the fixed support base 21. The first clamping block 211 is connected to the end of the rotating shaft 42. In fact, the first clamping block and the rotating shaft are integrally formed;

[0035] The first transmission wheel 41 is sleeved on the driving threaded rod 32;

[0036] The second transmission wheel 43 is sleeved on the rotating shaft 42;

[0037] The transmission belt 44 is simultaneously sleeved on the first transmission wheel 41 and the second transmission wheel 43;

[0038] The rotating mechanism and the traveling detection mechanism share a driving handle. Through the action of the transmission belt, synchronous transmission of the driving threaded rod and the rotating shaft is achieved;

[0039] According to the detection requirements, the diameter of the workpiece to be detected, etc., a matching first transmission wheel and second transmission wheel are reasonably selected. For example, when the traveling base travels 1 mm, the rotating shaft rotates one week;

[0040] Or a telescopic cylinder can be used to drive the threaded rod, and a rotating motor can be used to drive the rotating shaft. After setting to advance 1 mm each time, the output shaft of the rotating motor rotates one week, etc. Corresponding settings can be made according to actual needs. When using a telescopic cylinder and a rotating motor, the driving handle, the first transmission wheel, the second transmission wheel and the transmission belt can be removed accordingly;

[0041] The conveyor belt can be an internal gear belt, and the first transmission wheel and the second transmission wheel can be transmission gears. The internal gear belt meshes with the first transmission gear and the second transmission gear.

[0042] In a specific embodiment of the present invention, see Figures 1-4 , a key shaft 321 is provided at the power end of the driving threaded rod 32, and the first transmission wheel 41 is sleeved on the key shaft 321;

[0043] Similarly, a driving key is provided on the rotating shaft 42, and the second transmission wheel is sleeved on the driving key;

[0044] Thereby, the assembly precision of the first transmission wheel and the second transmission wheel is improved, ensuring more stability during rotation.

[0045] In a specific embodiment of the present invention, see Figures 1-4 , in order to ensure the stability of the traveling base during traveling, two limiting guide rods are symmetrically arranged, and correspondingly, two limiting holes are symmetrically arranged.

[0046] In a specific embodiment of the present invention, see Figures 1-4 , before working, first move the limiting support seat outward by a certain distance, then place the workpiece on the first chuck, and then restore the limiting support seat to its original position. At this time, the second chuck cooperates with the first chuck to clamp the workpiece;

[0047] Then adjust the position of the detector and other devices and turn on the detector;

[0048] Start manually rotating the driving handle. During the rotation, the workpiece to be detected rotates continuously, and at the same time, the traveling base advances at a certain speed until the entire workpiece is detected or restored to its original position.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An error inspection fixture, comprising: A base and a positioning fixture, wherein the positioning fixture is installed on the base; It is characterized by: it also includes a travel detection mechanism; The travel detection mechanism includes a driving handle, a driving threaded rod, a travel base and a detector, wherein the driving threaded rod is rotatably mounted on the base, the driving handle is mounted on one end of the driving threaded rod, an internal threaded hole is provided on the travel base, the travel base is connected to the driving threaded rod through the internal threaded hole, and the detector is mounted on the travel base; A limiting hole is arranged on the traveling base, a limiting guide rod is arranged on the base, and the limiting guide rod is sleeved in the limiting hole.

2. An error inspection fixture as claimed in claim 1, characterized in that: The positioning fixture comprises a fixed support seat and a position-limiting support seat, the fixed support seat is provided with a first clamping block, and the position-limiting support seat is provided with a second clamping block; The positioning fixture is provided with a rotating mechanism, which includes the driving handle, a first transmission wheel, a rotating shaft, a second transmission wheel and a transmission belt; The rotating shaft is rotatably mounted on the fixed support seat, and the first clamping block is connected to the end of the rotating shaft; The first transmission wheel is sleeved on the driving threaded rod; The second transmission wheel is sleeved on the rotating shaft; The transmission belt is simultaneously mounted on the first transmission wheel and the second transmission wheel.

3. An error inspection fixture as claimed in claim 2, characterized in that: The power end of the driving threaded rod is provided with a key shaft, and the first transmission wheel is sleeved on the key shaft.

4. An error inspection fixture as claimed in claim 1, characterized in that: The two limit guide rods are symmetrically arranged, and correspondingly, the two limit holes are symmetrically arranged.

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