CN207487559U - A kind of screw rod and star-wheel back lash measuring device - Google Patents

A kind of screw rod and star-wheel back lash measuring device Download PDF

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Publication number
CN207487559U
CN207487559U CN201721478799.0U CN201721478799U CN207487559U CN 207487559 U CN207487559 U CN 207487559U CN 201721478799 U CN201721478799 U CN 201721478799U CN 207487559 U CN207487559 U CN 207487559U
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CN
China
Prior art keywords
star
wheel
screw rod
lash
tension shaft
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Active
Application number
CN201721478799.0U
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Chinese (zh)
Inventor
马科军
原和平
叶毅
王忠义
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Haomi Power Equipment Co Ltd
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Haomi Power Equipment Co Ltd
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Priority to CN201721478799.0U priority Critical patent/CN207487559U/en
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Abstract

The utility model is related to a kind of screw rods and star-wheel back lash measuring device, including workbench, setting on the table two V-blocks being oppositely arranged, be arranged between two V-blocks for the tension shaft of standing screw and setting on the table for installing the slide unit of star-wheel, during measurement, screw rod is set on tension shaft fixed, then star-wheel is mounted on slide unit, slide unit drives star-wheel mobile and star-wheel is made to be contacted with screw rod, rotates screw rod, investigates screw rod and star-wheel back lash.Compared with prior art, the utility model engages situation by observe screw rod and star-wheel, can measure tooth top when screw rod is engaged with star-wheel, backlash, infer the machining accuracy of screw rod and star-wheel indirectly, the screw rod centre of gyration, the distance of screw rod axis center and star-wheel axis center can also be measured.

Description

A kind of screw rod and star-wheel back lash measuring device
Technical field
The utility model is related to field of fluid machinery, and in particular to a kind of screw rod and star-wheel back lash measuring device.
Background technology
Single screw compressor is a kind of widely used fluid machinery, for compressed gas, so as to improving gas pressure.Its Structure is as shown in Figure 1, single screw compressor includes the Meshing Pair of high-accuracy engagement being made of screw rod and star-wheel, mesh degree Directly affect the efficiency of single screw compressor.Influence this processing for including screw rod and star-wheel to the factor of the Meshing Pair accuracy of mesh Precision, also star-wheel relative to screw rod positional precision.The tooth top and tooth of screw rod and star-wheel are defined in the design of single screw rod Side clearance.Since 1. star-wheel material for senior engineering plastic processes the field of conjugate action by numerical control machining center, the type face after processing without Method measures, and can only pass through the machining accuracy engaged to judge type face with screw rod;2. star-wheel is in machine relative to the position of screw rod With what is ensured when adjusting, the machining accuracy of screw rod and star-wheel is also one of factor of the guarantee assembly precision for assembling;3. screw rod An important factor for machining accuracy and the guarantee accuracy of mesh, screw rod is processed by screw rod special plane, after screw rod processing, screw rod Spiral camber precision can not also measure, can only engaging by screw rod and star-wheel, to judge the machining accuracy of screw rod.
After screw rod and star-wheel are packed into compressor, engaging for screw rod and star-wheel can not be observed, can not also measure tooth top, flank Gap so can not judge its accuracy of mesh, may bring serious harm.
Utility model content
The purpose of this utility model is exactly to be provided a kind of simple in structure to overcome the problems of the above-mentioned prior art Screw rod and star-wheel back lash measuring device.
The purpose of this utility model can be achieved through the following technical solutions:A kind of screw rod is measured with star-wheel back lash Device, the device include workbench, setting on the table two V-blocks being oppositely arranged, be arranged between two V-blocks and use In the tension shaft of standing screw and setting on the table for installing the slide unit of star-wheel, during measurement, screw rod is set in and is risen It is fixed on mandrel, then star-wheel is mounted on slide unit, slide unit drives star-wheel mobile and star-wheel is made to be contacted with screw rod, rotates spiral shell Bar investigates screw rod and star-wheel back lash.
Position relationship in working condition of the unit simulation of the utility model screw rod and star-wheel and the phase both simulated To movement, and the present apparatus and it is not provided with housing, it is possible to the measurement that is apparent from and between observing between screw rod and star-wheel Gap, so as to judge its accuracy of mesh.
The V-block includes pedestal and is opened in the V-groove of base top, and the both ends of the tension shaft are set up respectively In the bottom of two V-grooves, and tension shaft one end therein is connect with V-groove by bearing.
The bottom of the pedestal be equipped with feather key, the workbench be equipped with along tension shaft axially distribution and with guiding The guide groove that key matches, after the distance of two V-blocks determines, by T-nut being set to fix V-block in guide groove. By setting feather key and guide groove, the distance between two V-blocks can be adjusted, to adapt to the screw rod of different size.
The tension shaft includes axis body, the thrust being fixed in the middle part of axis body protrusion, is set in rising in the middle part of axis body Fixed and locking nut, during installation, screw rod is set on the outside of expansion sleeve, and one end is abutted with thrust protrusion, and the other end passes through set Circle is abutted with locking nut, and the both ends of the axis body are erected on two V-blocks.Since the device of the utility model needs often Dismounting, it is impossible to the outer diameter of axis body be arranged to as the internal diameter of screw rod, dismounting in this way is got up and bothered very much, this practicality Novel to use expansion sleeve, expansion sleeve is equipped at least one gap, and when screw rod loads and unloads, gap is compressed, the outer diameter of expansion sleeve It slightly reduces, screw rod can be slipped into smoothly, and after installing, expansion sleeve flicks, and tightly be bonded the inside of screw rod, by screw rod It is fixed on tension shaft.
Top, described top and axis body one is fixed on a V-block not connect with tension shaft by bearing The center at end abuts.Set it is top, can measure when screw rod air-breathing end face be made to be close to bearing positioning device.
The slide unit be equipped be parallel to tension shaft and perpendicular to tension shaft X to the linear guide and Y-direction the linear guide, The tumbler being vertically arranged is set in the X into the linear guide and Y-direction the linear guide, and the star-wheel, which is arranged, is connected to rotation On device, the X is equipped with the screw for rotating device into the linear guide and Y-direction the linear guide.
The slip precision of the screw is less than 0.02mm.
The tumbler includes bearing block, the shaft being connect with bearing block by bearing and pressing plate, the star-wheel set It is located in shaft, and passes through pressing plate and fix, the bearing block is slidably connected at X into the linear guide and Y-direction the linear guide.
Set on the workbench there are two reference block, during installation, an end face of the screw rod and side respectively with base The datum level of quasi- block flushes.Setting precisely it is fast, be in order to make the installation site of screw rod in actual work, screw rod be mounted on compression Situation inside machine is more close, improves measurement accuracy.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects:
(1) by the present apparatus, can observe screw rod and star-wheel engages situation, can measure tooth when screw rod is engaged with star-wheel Top, backlash infer the machining accuracy of screw rod and star-wheel indirectly, can also measure the screw rod centre of gyration, screw rod axis center with The distance of star-wheel axis center provides foundation for screw rod processing;
(2) dismounting of screw rod is simpler;
(3) simple in structure, accuracy of detection is high.
Description of the drawings
Fig. 1 is existing single screw compressor schematic diagram;
Fig. 2 is the main structure diagram of the utility model device;
Fig. 3 is the overlooking the structure diagram of the utility model device;
Fig. 4 is the structure diagram of the utility model tension shaft.
Wherein, 1 is right V-block, and 2 be tension shaft, and 3 is do V-block, and 4 be top, and 5 be slide unit, and 6 be rotation axis, and 7 be spiral shell Bar, 8 be star-wheel, and 9 be right reference block, and 10 be rear reference block, and 11 be workbench, and 12 be axis body, and 13 be expansion sleeve, and 14 be lasso, 15 be locking nut, and 16 be thrust protrusion, and 17 be guide groove.
Specific embodiment
Elaborate below to the embodiment of the utility model, the present embodiment using technical solutions of the utility model before It puts and is implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited In following embodiments.
Embodiment 1
A kind of screw rod 7 and 8 gap measuring apparatus of star-wheel, structure as shown in Figure 2 and Figure 3, including workbench 11, are arranged on Two left V-blocks 3 being oppositely arranged on workbench 11, right V-block 1 are arranged between two V-blocks for standing screw 7 It tension shaft 2 and is arranged on workbench 11 that the slide unit 5 of star-wheel 8 is installed, during measurement, screw rod 7 is set on tension shaft 2 It is fixed, then star-wheel 8 is mounted on slide unit 5, slide unit 5 drives star-wheel 8 to move and star-wheel 8 is made to be contacted with screw rod 7, rotates screw rod 7, investigate screw rod 7 and 8 back lash of star-wheel.
V-block includes pedestal and is opened in the V-groove of base top, and the both ends of tension shaft 2 are respectively erected in two V-types The bottom of slot, and tension shaft 2 obtains right end and is connect with the V-groove for having V-block 1 by bearing.
The bottom of pedestal is equipped with feather key, workbench 11 be equipped with along the axial distribution of tension shaft 2 and with feather key phase The guide groove 17 matched, after the distance of two V-blocks determines, by T-nut being set to fix V-block in guide groove.Pass through Feather key and guide groove 17 are set, the distance between two V-blocks can be adjusted, to adapt to the screw rod 7 of different size.
Workbench 11 is equipped with right reference block 9 and rear reference block 10, during installation, a right side and the right benchmark of screw rod 7 The datum level of block 9 flushes, and the side of screw rod 7 is flushed with the datum level of rear reference block 10.
The structure of tension shaft 2 is as shown in figure 4, including axis body 12, the thrust protrusion 16 for being fixed at 12 middle part of axis body, set It is located at the expansion sleeve 13 and locking nut 15 at 12 middle part of axis body.During installation, screw rod 7 is set in the outside of expansion sleeve 13, one end with Thrust protrusion 16 abuts, and the other end is abutted by lasso 14 with locking nut 15, and the both ends of axis body 12 are erected at two V-blocks On.
Top 4, top 4 are fixed on left V-block 3 to abut with the center of 12 left end of axis body.Set top 4, Ke Yi 7 air-breathing end face of screw rod is made to be close to bearing positioning device during measurement.
Slide unit 5 be equipped be parallel to tension shaft 2 and perpendicular to tension shaft 2 X to the linear guide and Y-direction the linear guide, in X The tumbler being vertically arranged is set into the linear guide and Y-direction the linear guide, star-wheel 8, which is arranged, to be connected on tumbler, X to The screw for rotating device is equipped in the linear guide and Y-direction the linear guide.
The slip precision of screw is less than 0.02mm.
Tumbler is set in shaft including bearing block, the shaft and pressing plate, star-wheel 8 that are connect with bearing block by bearing On, and pass through pressing plate and fix, bearing block is slidably connected at X into the linear guide and Y-direction the linear guide.

Claims (9)

1. a kind of screw rod and star-wheel back lash measuring device, which is characterized in that the device includes workbench, is arranged on workbench Upper two V-blocks being oppositely arranged are arranged between two V-blocks for the tension shaft of standing screw and are arranged on workbench On for installing the slide unit of star-wheel, during measurement, screw rod is set on tension shaft fixed, then star-wheel is mounted on slide unit, Slide unit drives star-wheel mobile and star-wheel is made to be contacted with screw rod, rotates screw rod, investigates screw rod and star-wheel back lash.
2. a kind of screw rod according to claim 1 and star-wheel back lash measuring device, which is characterized in that the V-type Block includes pedestal and is opened in the V-groove of base top, and the both ends of the tension shaft are respectively erected in the bottom of two V-grooves Portion, and tension shaft one end therein is connect with V-groove by bearing.
3. a kind of screw rod according to claim 2 and star-wheel back lash measuring device, which is characterized in that the pedestal Bottom be equipped with feather key, the workbench is equipped with axially to be distributed and the guide groove that matches with feather key along tension shaft, After the distance of two V-blocks determines, by T-nut being set to fix V-block in guide groove.
4. a kind of screw rod according to claim 2 and star-wheel back lash measuring device, which is characterized in that the tensioner Axis includes axis body, the thrust being fixed in the middle part of axis body protrusion, the expansion sleeve and locking nut that are set in the middle part of axis body, peace During dress, screw rod is set on the outside of expansion sleeve, and one end is abutted with thrust protrusion, and the other end is abutted by lasso with locking nut, institute The both ends for stating axis body are erected on two V-blocks.
5. a kind of screw rod according to claim 4 and star-wheel back lash measuring device, which is characterized in that not with tension shaft It is fixed with top on the V-block connected by bearing, the top center with axis body one end abuts.
6. a kind of screw rod according to claim 1 and star-wheel back lash measuring device, which is characterized in that the slide unit Be equipped be parallel to tension shaft and perpendicular to tension shaft X to the linear guide and Y-direction the linear guide, in the X to the linear guide And the tumbler being vertically arranged is set in Y-direction the linear guide, the star-wheel, which is arranged, to be connected on tumbler, and the X is to straight The screw for rotating device is equipped in line guide rail and Y-direction the linear guide.
7. a kind of screw rod according to claim 6 and star-wheel back lash measuring device, which is characterized in that the screw It slides precision and is less than 0.02mm.
8. a kind of screw rod according to claim 6 and star-wheel back lash measuring device, which is characterized in that the rotation dress The shaft and pressing plate, the star-wheel connecting including bearing block, with bearing block by bearing is put to be set in shaft, and pass through pressure Plate is fixed, and the bearing block is slidably connected at X into the linear guide and Y-direction the linear guide.
9. a kind of screw rod according to claim 1 and star-wheel back lash measuring device, which is characterized in that the work It is set on platform there are two reference block, during installation, an end face of the screw rod and side flush respectively with the datum level of reference block.
CN201721478799.0U 2017-11-08 2017-11-08 A kind of screw rod and star-wheel back lash measuring device Active CN207487559U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721478799.0U CN207487559U (en) 2017-11-08 2017-11-08 A kind of screw rod and star-wheel back lash measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721478799.0U CN207487559U (en) 2017-11-08 2017-11-08 A kind of screw rod and star-wheel back lash measuring device

Publications (1)

Publication Number Publication Date
CN207487559U true CN207487559U (en) 2018-06-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721478799.0U Active CN207487559U (en) 2017-11-08 2017-11-08 A kind of screw rod and star-wheel back lash measuring device

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112881003A (en) * 2021-01-11 2021-06-01 西安理工大学 Screw rod and star gear meshed lubricating property testing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112881003A (en) * 2021-01-11 2021-06-01 西安理工大学 Screw rod and star gear meshed lubricating property testing device

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