CN112485105B

CN112485105B - Heating tensile testing device for testing reliability of numerical control machine tool spindle environment

Info

Publication number: CN112485105B
Application number: CN202011309307.1A
Authority: CN
Inventors: 王继利; 田海龙; 陈传海; 杨兆军; 李国发; 何佳龙; 罗巍; 朱晓翠
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-09-07
Anticipated expiration: 2040-11-20
Also published as: CN112485105A

Abstract

The invention relates to the field of numerical control machines, in particular to a heating and stretching testing device for testing the environmental reliability of a main shaft of a numerical control machine, which comprises a box body, wherein a partition plate is arranged in the middle of the interior of the box body, the left end and the right end of the partition plate are connected with the box body through a rotating shaft, a driving motor embedded in the box body is arranged at the outer end of the rotating shaft, the box body is divided into a testing cavity and a cooling cavity by the partition plate, a plurality of heaters are arranged at the upper end of the interior of the testing cavity, testing mechanisms are symmetrically arranged at the upper side and the lower side of the partition plate, a fan is arranged at the right end of the box body, an air inlet pipe is arranged on the fan, a refrigerating mechanism is arranged on the air inlet pipe, a blowing pipe extending into the cooling cavity is arranged on the fan, a plurality of spray heads are arranged on the blowing pipe, and an exhaust pipe is arranged at the left end of the cooling cavity. The structure setting of this device can be so that the heat in the test cavity can not lose too much, reduces the loss of energy, improves the efficiency of work to make the main shaft be convenient for change, improve the security of changing, the practicality is strong.

Description

Heating tensile testing device for testing reliability of numerical control machine tool spindle environment

Technical Field

The invention relates to the field of numerical control machines, in particular to a heating tensile testing device for testing the reliability of a main shaft environment of a numerical control machine.

Background

The numerical control lathe is a high-precision and high-efficiency automatic machine tool. The multi-station tool turret or the power tool turret is equipped, so that the machine tool has wide processing technological performance, can process complex workpieces such as linear cylinders, oblique line cylinders, circular arcs and various threads, grooves, worms and the like, has various compensation functions of linear interpolation and circular arc interpolation, and plays a good economic effect in the batch production of complex parts. The main shaft of the machine tool refers to a shaft on the machine tool for driving a workpiece or a cutter to rotate. The main shaft component is generally composed of a main shaft, a bearing, a transmission member (gear or pulley), and the like. The machine is mainly used for supporting transmission parts such as gears and belt wheels and transmitting motion and torque, such as a machine tool spindle; some are used to clamp a workpiece, such as a mandrel. The important part of the numerically-controlled machine tool is usually cylindrical when the numerically-controlled machine tool spindle is used, and the prior art does not measure the stretching amount and the stretching force of the numerically-controlled machine tool spindle in a high-temperature state when the quality of the numerically-controlled machine tool spindle is detected. However, when the spindle of the numerical control machine tool works, the spindle needs to rotate at a high speed, and can be in contact with other parts or objects, the temperature can rise, large force needs to be borne, and the quality of the spindle of the numerical control machine tool, which does not detect the stretching amount and the pulling force in a high-temperature state, cannot be guaranteed.

Chinese patent (publication No. CN 210166136U) discloses a heating tensile testing device for a numerically-controlled machine tool spindle, which is provided with a movable chuck and a fixed chuck, so that a cylindrical numerically-controlled machine tool spindle can be clamped more easily; obviously, when the device is used for measuring the stretching amount of the numerical control machine tool spindle in a high-temperature state, the numerical control machine tool spindle is clamped by the movable chuck and the fixed chuck, then the heater is started to heat the air in the heat insulation box, when the temperature in the heat insulation box is stable, the temperature in the heat insulation box is measured by the temperature display device at the moment, the gear shaft and the pinion are driven to rotate by the rotation of the large gear, the transmission rod, the movable rod and the movable chuck are driven to move leftwards, the moving distance of the transmission rod is recorded, and the numerical value of the tension display device is recorded; the technical problem that the numerical control machine tool spindle in a high-temperature state cannot be subjected to tensile test in the prior art is solved; although the device can realize the tensile test of main shaft, its test at a main shaft is accomplished the back, need open the box, changes the main shaft, carries out the change of next main shaft, but the device does not set up cooling mechanism, and when changing, the high temperature of main shaft causes the damage to the staff easily to the box is opened the back, runs off rapidly behind the heat, needs reheating, not only influences the efficiency of work, extravagant energy moreover. The invention aims to solve the technical problems in the prior art, and provides a heating and stretching testing device for testing the reliability of a numerical control machine spindle environment.

Disclosure of Invention

The invention aims to provide a heating tensile testing device for testing the environmental reliability of a main shaft of a numerical control machine tool, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a digit control machine tool main shaft environmental reliability test is with heating tensile test device, the power distribution box comprises a box body, the lower extreme of box is provided with the base, be provided with first telescopic machanism between base and the box, be provided with the baffle in the middle of the inside of box, both ends are connected with the box through the pivot about the baffle, and the outer end of pivot is provided with the driving motor who inlays in the box, and the baffle is cut apart into test chamber and cooling chamber with the box, and the inside upper end in test chamber is provided with a plurality of heaters, and the upper and lower bilateral symmetry of baffle is provided with accredited testing organization, and the right-hand member of box is provided with the fan, be provided with the air-supply line on the fan, be provided with refrigeration mechanism on the air-supply line, be provided with the blowing pipe that stretches into cooling chamber on the fan, be provided with a plurality of shower nozzles on the blowing pipe, the left end in cooling chamber is provided with the exhaust pipe.

As a still further scheme of the invention: the inner side of the box body is provided with a sealing cavity at the positions of the front side and the rear side of the partition plate, and a sealing mechanism is arranged in the sealing cavity.

As a still further scheme of the invention: the sealing mechanism comprises a second electric telescopic mechanism, a sealing plate is arranged at the outer end of the second electric telescopic mechanism, and a sealing gasket is arranged on the outer side of the sealing plate.

As a still further scheme of the invention: and an arc-shaped groove matched with the partition plate is arranged on the outer side of the sealing gasket.

As a still further scheme of the invention: the testing mechanism comprises a fixed clamping piece arranged at the right part of the partition plate, a sliding rail is arranged at the left part of the partition plate, a movable clamping piece is arranged on the sliding rail, a tension detection mechanism is arranged on the left side of the movable clamping piece, a supporting plate is arranged at the left part of the partition plate, a third electric telescopic mechanism is arranged on the right side of the supporting plate, and the right end of the third electric telescopic mechanism is connected with the tension detection mechanism.

As a still further scheme of the invention: the damping cavity has been seted up to the upside of base, the inside in damping cavity is provided with a plurality of damping spring, damping spring's upper end is provided with the shock attenuation board, the upside and the electronic telescopic machanism of shock attenuation board are connected.

As a still further scheme of the invention: the inside bilateral symmetry of shock attenuation chamber is provided with the threaded rod, the damping plate is passed on the upper portion of threaded rod, threaded rod and damping plate sliding connection, and the upper end of threaded rod is provided with adjusting nut.

As a still further scheme of the invention: the middle of the inside of the damping cavity is provided with a fourth electric telescopic mechanism, and the upper end of the fourth electric telescopic mechanism is provided with a push plate.

Compared with the prior art, the invention has the beneficial effects that: the structure of the device is provided with a testing cavity and a cooling cavity, when in work, the main shaft is fixed on a testing mechanism in the testing cavity, then heating the mixture by a heater to a specified temperature, performing a tensile test, and simultaneously, the next main shaft to be tested can be fixed on the testing mechanism in the cooling cavity, after the test is finished, the driving motor drives the partition plate to rotate, so that the two testing mechanisms exchange positions, the main shaft after the test is finished enters the cooling cavity, the main shaft is cooled by the fan and the refrigerating mechanism, then can change the main shaft after the cooling, such structure setting can be so that the heat in the test cavity can not lose too much, reduces the loss of energy, improves the efficiency of work to make the main shaft be convenient for change, improve the security of changing, the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of the device.

Fig. 2 is a side sectional view of the case.

Fig. 3 is a schematic structural view of the sealing mechanism.

Fig. 4 is a schematic structural diagram of the base.

1-box body, 2-base, 3-first electric telescopic mechanism, 4-partition board, 5-test cavity, 6-cooling cavity, 7-driving motor, 8-rotating shaft, 9-fan, 10-air inlet pipe, 11-refrigerating mechanism, 12-blowing pipe, 13-spray head, 14-exhaust pipe, 15-fixed clamping frame, 16-sliding rail, 17-movable clamping piece, 18-tension detection mechanism, 19-supporting plate, 20-third electric telescopic mechanism, 21-sealing cavity, 22-sealing mechanism, 23-third electric telescopic mechanism, 24-sealing plate, 25-sealing pad, 26-arc groove, 27-damping cavity, 28-damping spring, 29-damping plate, 31-threaded rod, 32-adjusting nut, 33-fourth electric telescopic mechanism and 34-push plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Example one

Referring to fig. 1-4, in the embodiment of the present invention, a heating and stretching testing apparatus for testing reliability of environment of a spindle of a numerically-controlled machine tool includes a box body 1, a base 2 is disposed at a lower end of the box body 1, a first telescopic mechanism 3 is disposed between the base 2 and the box body 1, a partition plate 4 is disposed in the middle of the box body 1, left and right ends of the partition plate 4 are connected to the box body 1 through a rotating shaft 8, a driving motor 7 embedded in the box body 1 is disposed at an outer end of the rotating shaft 8, the box body 1 is divided into a testing chamber 5 and a cooling chamber 6 by the partition plate 4, a plurality of heaters are disposed at an upper end of the testing chamber 5, the testing mechanisms are symmetrically disposed at upper and lower sides of the partition plate 4, a fan 9 is disposed at a right end of the box body 1, an air inlet pipe 10 is disposed on the fan 9, a refrigerating mechanism 11 is disposed on the air inlet pipe 10, a blowing pipe 12 extending into the cooling chamber 6 is disposed on the fan 9, the blowing pipe 12 is provided with a plurality of nozzles 13, and the left end of the cooling cavity 6 is provided with an exhaust pipe 14. The structure of the device is provided with a testing cavity 5 and a cooling cavity 6, when the device works, a main shaft is fixed on a testing mechanism in the testing cavity 5, then a heater is used for heating, after the heating is carried out to a specified temperature, a tensile test is carried out, meanwhile, the next main shaft to be tested can be fixed on the testing mechanism in the cooling cavity 6, after the test is finished, a driving motor 7 drives a clapboard 4 to rotate, so that the two testing mechanisms carry out position exchange, the main shaft after the test is finished can enter the cooling cavity 6, the main shaft is cooled by a fan 9 and a refrigerating mechanism 11, then the main shaft after the cooling can be replaced, the structure can prevent the heat in the testing cavity from losing too much, reduce the energy loss, improve the working efficiency, facilitate the replacement of the main shaft and improve the replacement safety, the practicability is strong.

The utility model discloses a box, including box 1, baffle 4, sealing mechanism 22, sealing mechanism 23, sealing plate 24, sealing gasket 25, baffle 4 complex arc wall 26 is provided with in the outside of sealed gasket 25, box 1 inboard is located and has seted up sealed chamber 21 on the position of baffle 4 front and back both sides, be provided with sealing mechanism 22 in the sealed chamber 21, and sealing mechanism 22 includes second electric telescopic machanism 23, the outer end of second electric telescopic machanism 23 is provided with sealing plate 24, sealing plate 24's the outside is provided with sealed the gasket 25. The setting of this mechanism can play sealed effect, guarantees the leakproofness between test chamber 5 and the cooling chamber 6 to when the baffle is rotatory, can retract sealed 25 through the electronic telescopic machanism 23 of second, prevent to lead to the fact the hindrance to the baffle 4 rotation.

The testing mechanism comprises a fixed clamping piece 15 installed on the right portion of the partition plate 4, a sliding rail 16 is arranged on the left portion of the partition plate 4, a movable clamping piece 17 is arranged on the sliding rail 16, a tension detection mechanism 18 is arranged on the left side of the movable clamping piece 17, a supporting plate 19 is arranged on the left portion of the partition plate 4, a third electric telescopic mechanism 20 is arranged on the right side of the supporting plate 19, and the right end of the third electric telescopic mechanism 20 is connected with the tension detection mechanism 18.

Example two

A damping cavity 27 is formed in the upper side of the base 2, a plurality of damping springs 28 are arranged inside the damping cavity 27, a damping plate 29 is arranged at the upper end of each damping spring 28, and the upper side of each damping plate 29 is connected with the first electric telescopic mechanism 3. The shock absorption of the device can be realized by the arrangement of the structure, and the service life of the device is prolonged.

Threaded rods 31 are symmetrically arranged in the damping cavity 27 in the left-right direction, the upper portion of each threaded rod 31 penetrates through the damping plate 29, each threaded rod 31 is connected with the damping plate 29 in a sliding mode, and adjusting nuts 32 are arranged at the upper ends of the threaded rods 31. After the device is used for a while, the elastic force of the damper spring 28 is reduced, and the position of the damper plate 29 can be adjusted by adjusting the nut 32, thereby securing the damping performance of the damper spring 28.

A fourth electric telescopic mechanism 33 is arranged in the middle of the inside of the damping cavity 27, and a push plate 34 is arranged at the upper end of the fourth electric telescopic mechanism 33. The arrangement of this structure, after every period, can be through fourth electronic telescopic machanism 33 and push pedal 34, with the lifting of damper plate 29 for damper spring 28 stretches, thereby makes damper spring 28 resume certain elasticity, extension damper spring 28's life cycle.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The numerical control machine tool spindle heating and stretching testing device comprises a box body (1), wherein a base (2) is arranged at the lower end of the box body (1), a first electric telescopic mechanism (3) is arranged between the base (2) and the box body (1), and the numerical control machine tool spindle heating and stretching testing device is characterized in that a partition plate (4) is arranged in the middle of the interior of the box body (1), the left end and the right end of the partition plate (4) are connected with the box body (1) through a rotating shaft (8), a driving motor (7) embedded in the box body (1) is arranged at the outer end of the rotating shaft (8), the box body (1) is divided into a testing cavity (5) and a cooling cavity (6) by the partition plate (4), a plurality of heaters are arranged at the upper end of the interior of the testing cavity (5), testing mechanisms are symmetrically arranged at the upper side and the lower side of the partition plate (4), a fan (9) is arranged at the right end of the box body (1), an air inlet pipe (10) is arranged on the fan (9), a refrigerating mechanism (11) is arranged on the air inlet pipe (10), a blowing pipe (12) extending into the cooling cavity (6) is arranged on the fan (9), a plurality of spray heads (13) are arranged on the blowing pipe (12), and an exhaust pipe (14) is arranged at the left end of the cooling cavity (6);

the testing mechanism comprises a fixed clamping piece (15) arranged at the right part of a partition plate (4), a sliding rail (16) is arranged at the left part of the partition plate (4), a movable clamping piece (17) is arranged on the sliding rail (16), a tension detection mechanism (18) is arranged at the left side of the movable clamping piece (17), a supporting plate (19) is arranged at the left part of the partition plate (4), a third electric telescopic mechanism (20) is arranged at the right side of the supporting plate (19), the right end of the third electric telescopic mechanism (20) is connected with the tension detection mechanism (18), a damping cavity (27) is formed in the upper side of the base (2), a plurality of damping springs (28) are arranged in the damping cavity (27), a damping plate (29) is arranged at the upper end of each damping spring (28), the upper side of each damping plate (29) is connected with a first electric telescopic mechanism (3), threaded rods (31) are symmetrically arranged in the damping cavity (27) left and right, the upper part of the threaded rod (31) penetrates through the damping plate (29), the threaded rod (31) is connected with the damping plate (29) in a sliding mode, and the upper end of the threaded rod (31) is provided with an adjusting nut (32);

the sealing structure is characterized in that a sealing cavity (21) is formed in the positions, located on the front side and the rear side of the partition plate (4), of the inner side of the box body (1), a sealing mechanism (22) is arranged in the sealing cavity (21), the sealing mechanism (22) comprises a second electric telescopic mechanism (23), a sealing plate (24) is arranged at the outer end of the second electric telescopic mechanism (23), a sealing gasket (25) is arranged on the outer side of the sealing plate (24), and an arc-shaped groove (26) matched with the partition plate (4) is formed in the outer side of the sealing gasket (25).

2. The heating and stretching test device for the spindle of the numerical control machine tool is characterized in that a fourth electric telescopic mechanism (33) is arranged in the middle of the inside of the damping cavity (27), and a push plate (34) is arranged at the upper end of the fourth electric telescopic mechanism (33).