CN207365944U - Compare measurement diameter of axle specimen holder rotary propelling device and there is its measuring instrument - Google Patents

Abstract

The utility model discloses a clamping and rotating propulsion device for comparatively measuring shaft diameter specimens and a measuring instrument thereof, which belongs to the field of shaft diameter measuring equipment and includes a propulsion mechanism and a rotation mechanism which are relatively arranged; the rotation mechanism includes a rotation support frame, a rotation The rotating shaft on the support frame and the rotating assembly connected with the rotating shaft and driving the rotating shaft to rotate; one end of the rotating support frame is fixed with a ring-shaped reading disk; the propulsion mechanism includes a propulsion support frame and a fixed sleeve; the internal thread of the fixed sleeve is fitted with Screw rod; one end of the screw rod protrudes from the fixed sleeve and is connected with a rotating cap; the other end of the screw rod is connected with a propulsion shaft; the propulsion shaft and the rotation shaft are collinear and oppositely arranged. The precise control of the rotation angle and axial movement distance of the test piece is realized, the cross section to be tested can be accurately selected for the test piece, the detection accuracy is improved, and the human error is small.

Description

Clamping rotary propulsion device for measuring shaft diameter test piece and measuring instrument with same

technical field

The utility model relates to the field of shaft diameter measuring equipment, in particular to a clamping and rotating propulsion device for comparatively measuring shaft diameter test pieces and a measuring instrument with the same.

Background technique

The existing digital display vertical optical comparison measuring instrument uses the comparison method to measure the dimensional deviation of shaft parts, but because the measured workpiece has degrees of freedom in the X-axis and Y-axis directions during measurement, there are mainly the following problems. The angle cannot be precisely controlled, and the arbitrariness is large. The axial measurement position cannot be accurately guaranteed to measure in two directions on the same cross section.

Utility model content

The purpose of this utility model is to provide a comparatively measuring shaft diameter test piece clamping and rotating propulsion device and a measuring instrument with it, so as to solve the problem that the rotation angle of the measured shaft part, the selection of the measurement section is arbitrarily large, and the human error is large, which affects the measurement accuracy. The problem.

In order to achieve the purpose of the utility model, the adopted technical solution is: compare and measure the shaft diameter test piece clamping and rotating propulsion device, including a propulsion mechanism and a rotation mechanism arranged oppositely;

The rotating mechanism includes a rotating support frame, a rotating shaft on the rotating supporting frame, and a rotating assembly connected to the rotating shaft and driving the rotating shaft to rotate; a ring-shaped reading disk is fixed on the end of the rotating supporting frame away from the propulsion mechanism, and the reading disk ring is set Outside the rotating assembly, the rotating assembly has a pointer corresponding to the reading dial;

The propulsion mechanism includes a propulsion support frame and a fixed sleeve fixed on the propulsion support frame; the outer wall of the fixed sleeve away from the rotating mechanism has an axially distributed scale line, and the internal thread is fitted with a screw; the end of the screw far away from the rotating mechanism protrudes The fixed sleeve is connected with a rotary cap, and the rotary cap extends to the scale line of the fixed sleeve; the other end of the screw rod is connected with a propulsion shaft protruding from the fixed sleeve; the propulsion shaft and the rotary shaft are collinear and oppositely arranged.

Further, the rotating assembly includes a transmission shaft and a rotating sleeve rotatably supported on the rotating support frame; the rotating shaft and the transmission shaft are inside the rotating sleeve, and one end of the rotating shaft protrudes from the rotating sleeve and corresponds to the propulsion shaft; There is a non-circular hole on one end surface; the transmission shaft is fixed on the end of the rotating sleeve away from the propulsion mechanism; one end of the transmission shaft has a transmission section that extends into the non-circular hole and matches the non-circular hole, and the other end extends out of the rotating sleeve barrel and connect the pointer.

Further, a spring is arranged outside the transmission section, and one end of the spring abuts against the rotating shaft, and the other end of the spring abuts against the transmission shaft.

Further, opposite ends of the propulsion shaft and the rotation shaft are both in the shape of a frustum of a cone.

Further, balls are provided on the end surface of the propulsion shaft facing the rotating shaft.

The utility model also provides a shaft diameter measuring instrument, which includes the clamping and rotating propulsion device for comparing and measuring the shaft diameter test piece as described in any one of the above.

Further, it also includes the rack and the loading tray on the rack, and the propulsion mechanism and the rotating mechanism are respectively installed on the left and right sides of the loading tray on the rack; The slot corresponds between the propulsion mechanism and the rotation mechanism, and a test piece support block is clamped in the slot.

The support block adopts V-shaped block, and the card slot reasonably restricts the irregular movement of the shaft, which greatly improves the stability and accuracy of the test. The length, width and height of the card slot are set to conform to the size of commonly used V-shaped blocks, realizing the function that most V-shaped blocks can cooperate with the card slot. The card slot effectively limits the movement of the V-shaped block in the Y-axis direction, that is, perpendicular to the left and right The movement in the direction realizes the function of stabilizing the V-shaped block.

Further, both the propulsion mechanism and the rotation mechanism have mounting seats, and the mounting seats are detachably connected to the frame.

The beneficial effect of the utility model is that, by installing the precise flip propulsion device capable of clamping the test piece on the measuring instrument, the rotating cap of the rotating propulsion mechanism drives the propulsion axis to move the rotating shaft, so that the test piece is clamped between the propulsion shaft and the rotating shaft. Between the rotating shafts, and make the place to be measured correspond to the measuring head of the measuring instrument, the moving distance during the movement can be recorded and precisely controlled by observing the advancing distance of the rotating cap outside the scale line; after measuring the point here, The rotation of the rotating shaft can be driven by rotating the rotating assembly of the rotating mechanism. The friction between the rotating shaft and the test piece drives the rotation of the test piece. The value of the test piece can be recorded and precisely controlled, so that the values of each selected cross-section are tested successively; the precise control of the rotation angle and axial movement distance of the test piece is realized, and the test piece can be accurately selected. Accurate rotation at any angle can be realized, the number of measuring points in the same cross section increases, the detection accuracy is improved, and the human error is small, which solves the error that may be caused by direct manual operation, and the detection reliability and accuracy are high. The device can be used in conjunction with many types of platform optical measuring gauges.

Description of drawings

Fig. 1 is the front view of the clamping and rotating propulsion device for comparing and measuring the shaft diameter test piece provided by the embodiment of the present invention;

Fig. 2 is a sectional view at A-A place in Fig. 1;

Fig. 3 is the right side view of rotating mechanism place in Fig. 1;

Fig. 4 is a schematic structural view of the shaft diameter measuring instrument provided by the embodiment of the present invention with the comparative measurement shaft diameter test piece clamping and rotating propulsion device;

Reference signs: 1-propelling mechanism, 101-propelling support frame, 102-fixing sleeve, 103-graduation line, 104-screw, 105-rotating cap, 106-propelling shaft;

2-rotation mechanism, 201-rotation support frame, 202-rotation shaft, 203-rotation assembly, 204-reading plate, 205-pointer, 206-transmission shaft, 207-rotation sleeve, 208-non-circular hole, 209-transmission section, 210-spring;

3-Measuring head, 4-Installation seat, 5-Load tray, 6-Specimen support block, 7-Card slot.

Detailed ways

The utility model will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

Fig. 1, Fig. 2, Fig. 3 have shown the comparative measurement shaft diameter specimen clamping rotary propulsion device provided by the utility model, comprise the propulsion mechanism 1 and the rotary mechanism 2 that are arranged oppositely; The rotating shaft 202 on the supporting frame 201, the rotating assembly 203 that is connected with the rotating shaft 202 and drives the rotating shaft 202 to rotate; the end of the rotating supporting frame 201 away from the propulsion mechanism 1 is fixed with an annular reading disc 204, and the reading disc 204 ring Located outside the rotating assembly 203, the rotating assembly 203 has a pointer 205 corresponding to the reading plate 204; the propulsion mechanism 1 includes a propulsion support frame 101, a fixed sleeve 102 fixed on the propulsion support frame 101; The outer wall of one end has scale marks 103 distributed in the axial direction, and the internal thread is matched with a screw rod 104; the end of the screw rod 104 away from the rotating mechanism 2 protrudes from the fixed sleeve 102 and is connected with a rotating cap 105, and the rotating cap 105 extends to the fixing sleeve 102 The scale line 103; the other end of the screw rod 104 is connected with a propulsion shaft 106 protruding from the fixed sleeve 102; the propulsion shaft 106 is collinear and opposite to the rotation shaft 202.

Rotate the rotary cap 105 of the propulsion mechanism 1, the shaft to be measured is pushed against the head of the rotary shaft 202 of the rotary mechanism 2, and the distance traveled outside the scale line 103 by the rotary cap 105 is recorded at this time. The angle indicated by the pointer 205 is indicated. Rotate the propulsion mechanism 1 and rotate the cap 105 so that the section to be measured of the test piece corresponds to the measuring head 3, turn the rotating assembly 203 to the angle point to be measured, record the reading of the measuring instrument at this time, and then continue to rotate the angle to measure more points to complete the section Measurement. High precision, simple operation, can improve measurement accuracy and measurement efficiency.

The rotating assembly 203 includes a transmission shaft 206 and a rotating sleeve 207 rotatably supported on the rotating support frame 201; the rotating sleeve 207 is arranged on the rotating support frame 201 through a bearing, and the rotating shaft 202 and the transmission shaft 206 are inside the rotating sleeve 207, And one end of the rotating shaft 202 protrudes from the rotating sleeve 207 and corresponds to the propulsion shaft 106, and the other end face is provided with a non-circular hole 208 to realize transmission of rotation; the transmission shaft 206 is fixed on the end of the rotating sleeve 207 away from the propulsion mechanism 1; One end of the transmission shaft 206 has a transmission section 209 protruding into the non-circular hole 208 and matched with the non-circular hole 208 , and the other end protrudes from the rotating sleeve 207 and is connected with the pointer 205 . The rotating component 203 can also use other rotating parts in the prior art to drive the rotating shaft 202 to rotate, such as using a drive shaft directly connected to the rotating shaft 202 to drive the rotating shaft 202 to rotate.

A spring 210 is disposed outside the transmission section 209 , one end of the spring 210 abuts against the rotating shaft 202 , and the other end abuts against the transmission shaft 206 . When the screw 104 rotates to drive the propulsion shaft 106 and the test piece forward, the rotating shaft 202 of the rotating mechanism 2 is stressed and compresses the spring 210; The shaft 202 is forced to push the test piece back, so that the test piece in the return direction can move synchronously with the pushing shaft, and the efficiency is high.

The opposite ends of the propulsion shaft 106 and the rotating shaft 202 are both in the shape of a truncated cone for better contact with the test piece. Balls are provided on the end surface of the propulsion shaft 106 facing the rotating shaft 202 , not shown in the figure. When the rotating shaft 202 drives the test piece to rotate, the propulsion shaft 106 is prevented from following the rotation. The screw rod 104 and the propulsion shaft 106 can be of an integral structure, or can be of a separate and detachable structure.

The propulsion mechanism 1 and the rotation mechanism 2 can respectively be provided with a mounting seat 4 supporting the propulsion support frame 101 and the rotation support frame 201 of the two, so that the device can be installed on the measuring equipment through the mounting seat 4 conveniently. The mounting seat 4 can be in a C shape, and can be stuck to both sides of the measuring equipment rack through the C-shaped opening, which is convenient for disassembly and assembly.

The embodiment of the utility model also provides a shaft diameter measuring instrument, as shown in FIG. 4 , which includes the clamping and rotating propulsion device for comparing and measuring the shaft diameter test piece as described above. Accurate control and measurement are achieved by installing the device.

The measuring instrument also includes a frame and a loading tray 5 on the frame. The propulsion mechanism 1 and the rotating mechanism 2 are respectively installed on the left and right sides of the loading tray 5 on the frame; The card slot 7 corresponds to between the propulsion mechanism 1 and the rotation mechanism 2, and the test piece support block 6 is carded in the card slot 7. Both the propulsion mechanism 1 and the rotation mechanism 2 have mounting bases 4, and the mounting bases 4 are detachably connected to the frame. The mounting seat 4 can be C-shaped, nested on the left and right sides of the lower part of the frame, and achieves a fixing effect through friction. A liftable measuring head 3 in the prior art is installed on the top of the frame.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, there can be various modifications and changes within the spirit and principles of the utility model, which are equivalent Variations or replacements, etc., are all included within the protection scope of the present utility model.

Claims (8)

1. The clamping and rotating propulsion device for comparing and measuring the shaft diameter of the test piece is characterized in that it includes a propulsion mechanism and a rotation mechanism arranged oppositely; The rotating mechanism includes a rotating support frame, a rotating shaft on the rotating supporting frame, and a rotating assembly connected to the rotating shaft and driving the rotating shaft to rotate; a ring-shaped reading disk is fixed on the end of the rotating supporting frame away from the propulsion mechanism, and the reading disk ring is set Outside the rotating assembly, the rotating assembly has a pointer corresponding to the reading dial; The propulsion mechanism includes a propulsion support frame and a fixed sleeve fixed on the propulsion support frame; the outer wall of the fixed sleeve away from the rotating mechanism has an axially distributed scale line, and the internal thread is fitted with a screw; the end of the screw far away from the rotating mechanism protrudes The fixed sleeve is connected with a rotary cap, and the rotary cap extends to the scale line of the fixed sleeve; the other end of the screw rod is connected with a propulsion shaft protruding from the fixed sleeve; the propulsion shaft and the rotary shaft are collinear and oppositely arranged. 2. The comparative measurement shaft diameter test piece clamping rotary propulsion device according to claim 1, wherein the rotary assembly includes a transmission shaft and a rotary sleeve that is rotatably supported on the rotary support frame; the rotary shaft and the transmission shaft In the rotating sleeve, one end of the rotating shaft protrudes from the rotating sleeve and corresponds to the propulsion shaft, and a non-circular hole is opened on the other end; the transmission shaft is fixed on the end of the rotating sleeve away from the propulsion mechanism; one end of the transmission shaft has an extension The transmission segment that enters the non-circular hole and matches the non-circular hole, and the other end protrudes from the rotating sleeve and connects with the pointer. 3 . The clamping and rotating propulsion device for comparing and measuring shaft diameter test pieces according to claim 2 , wherein a spring is arranged outside the transmission section, and one end of the spring abuts against the rotating shaft, and the other end abuts against the transmission shaft. 4 . 4 . The clamping and rotating propulsion device for comparing and measuring shaft diameter test pieces according to claim 1 , wherein the opposite ends of the propulsion shaft and the rotating shaft are both in the shape of a truncated cone. 5 . The clamping and rotating propulsion device for comparing and measuring shaft diameter test pieces according to claim 1 , wherein balls are arranged on the end surface of the propulsion shaft facing the rotating shaft. 5 . 6. The shaft diameter measuring instrument, characterized in that it comprises the clamping and rotating propulsion device for comparing and measuring the shaft diameter test piece according to any one of claims 1-5. 7. The shaft diameter measuring instrument according to claim 6, characterized in that, it also includes a frame and a loading tray on the frame, and the propulsion mechanism and the rotating mechanism are respectively installed on the left and right sides of the loading tray on the frame; The upper surface of the object tray is provided with card slots along the left and right directions, the card slots correspond between the propulsion mechanism and the rotation mechanism, and the test piece support blocks are carded in the card slots. 8. The shaft diameter measuring instrument according to claim 7, characterized in that, both the propulsion mechanism and the rotation mechanism have mounting seats, and the mounting seats are detachably connected to the frame.