Main shaft built-in temperature sensor mechanism

Abstract

The invention discloses a main shaft built-in temperature sensor mechanism, and relates to the technical field of electric main shafts, the main shaft built-in temperature sensor mechanism comprises a main shaft shell and a contact type temperature sensor, the upper side and the lower side of the main shaft shell are connected with ribs, and one side of the main shaft shell is connected with a bottom cover plate; a transposition mechanism is arranged in the main shaft shell, the transposition mechanism dynamically adjusts the position of the contact type temperature sensor according to the length of the shaft body and the temperature sensing requirement, and then temperature sensing is conducted on the shaft body and a bearing at the joint of the shaft body. A rubber plug is connected to the position over the spindle shell in a penetrating mode, and a positioning mechanism is arranged in the spindle shell. In the using process, the motor drives the gear to rotate, the gear drives the straight-tooth rack on one side to be meshed, then transverse displacement is conducted on the straight-tooth rack and the instrument base, more comprehensive temperature multi-point detection is conducted, the detection fineness is improved, and the heating problem can be found and solved more easily.

Description

Technical Field

[0001] The invention relates to the technical field of electric spindles, and in particular to a spindle built-in temperature sensor mechanism. Background Art

[0002] One of the key factors affecting the life of electric spindle bearings is the bearing temperature during operation. Therefore, temperature is an important parameter for detecting the operating status of electric spindle bearings. Abnormal increase in bearing temperature may reflect problems such as bearing damage, lack of lubricating oil and installation errors. With the continuous improvement of the operating speed, load level and equipment processing accuracy requirements of rotating mechanical equipment, there is an urgent need to monitor and analyze the temperature rise of electric spindle bearings.

[0003] The temperature sensor and other sensors are arranged on the detection board, so that the entire sensor can only be installed on the main shaft with the help of the detection board, and the bearing operation status can be detected. The detection board is sleeved outside the main shaft, which makes the volume of the entire detection mechanism large and inconvenient to install in a small space. Summary of the invention

[0004] The object of the present invention is to provide a spindle built-in temperature sensor mechanism to solve the above-mentioned defects caused by the prior art.

[0005] The spindle built-in temperature sensor mechanism comprises a spindle housing and a contact temperature sensor, wherein the upper and lower sides of the spindle housing are connected with ribs, and one side of the spindle housing is connected with a bottom cover plate;

[0006] A transposition mechanism is provided inside the spindle housing, and the transposition mechanism dynamically adjusts the position of the contact temperature sensor according to the length of the shaft body and the temperature sensing requirement, thereby sensing the temperature of the shaft body and the bearing at the shaft body connection;

[0007] A rubber plug is connected through the top of the spindle housing, and a positioning mechanism is arranged inside the spindle housing. The positioning mechanism positions the contact temperature sensor and the infrared temperature sensing module, thereby facilitating the disassembly and maintenance of the contact temperature sensor and the infrared temperature sensing module.

[0008] Preferably, the spindle housing is connected to the outer side of the rubber plug via a mounting through hole that penetrates through the spindle housing.

[0009] Preferably, the shifting mechanism includes a micromotor, a transmission shaft, a gear and a guide rod. The micromotor is installed at the top of the spindle housing, the output end of the micromotor is connected to the transmission shaft, the outer side of the transmission shaft is connected to the gear, and the tail end of the guide rod is symmetrically welded inside the spindle housing.

[0010] Preferably, the positioning mechanism includes a flat iron seat, an instrument seat, a guide hole, a groove, a traction frame and a straight tooth bar, the flat iron seat is installed on the outside of the instrument seat, a groove is provided in the middle of the instrument seat, guide holes are provided on both sides of the flat iron seat, a traction frame is welded on one side of the instrument seat, and a straight tooth bar is connected to the outside of the traction frame.

[0011] Preferably, the traction frame is connected to the outer side of the shaft body through a contact temperature sensor arranged on the outer side.

[0012] Preferably, the traction frame is meshed with the outer side of the gear through a straight tooth bar arranged on the outer side.

[0013] Preferably, the instrument seat is connected to the outer side of the guide rod through symmetrically arranged guide holes.

[0014] Preferably, the instrument seat is connected to both sides of the contact temperature sensor via a flat iron seat symmetrically arranged inside.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. During use, the motor drives the gear to rotate, and the gear drives the spur gear on one side to mesh, thereby laterally displacing the spur gear and the instrument seat. The gear is set beside the rack through a rotating shaft and meshes with the rack to perform more comprehensive multi-point temperature detection, improve detection precision, and be more helpful in discovering heating problems and solving them.

[0017] 2. The temperature sensor is electrically connected to the fan through the PLC control system. When the internal temperature of the charging pile is too high, the fan is started to generate wind to blow air through the exhaust plate to cool the electric spindle and the motor, thereby improving the working efficiency of the spindle. The contact temperature sensor and the infrared temperature sensing module are positioned at the same time using the instrument seat. During use, the temperature of the rolling bearing and the electric spindle is sensed by the infrared temperature sensing module, which meets the convenience of equipment detection.

[0018] 3. Gears are used to drive the spur gears to mesh, and the spur gears are used to drive the instrument holder to move laterally. The position of the contact temperature sensor is dynamically adjusted, and the temperature of each part of the electric spindle is convenient for the maintenance and monitoring of the machine tool, the lubrication and cooling of the machine tool, and the life of the machine tool is increased. In addition, the cooling measures for the workpiece increase the stability of the workpiece and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the overall front view of the present invention.

[0021] Figure 3 It is a schematic diagram of the front cross-section structure of the spindle housing in the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the instrument seat itself in the present invention.

[0023] Figure 5 It is a schematic diagram of the top view of the traction frame in the present invention.

[0024] Figure 6 It is a schematic diagram of the top-sectional structure of the spindle housing in the present invention.

[0025] Figure 7 It is a schematic diagram of the side view structure of the spindle housing in the present invention.

[0026] in:

[0027] 1. Spindle housing;

[0028] 2. Transposition mechanism; 201. Micro motor; 202. Transmission shaft; 203. Gear; 204. Guide rod;

[0029] 3. Axis; 4. Bottom cover; 5. Ribs; 6. Rubber plug;

[0030] 7. Positioning mechanism; 71. Flat iron seat; 72. Instrument seat; 73. Guide hole; 74. Groove; 75. Traction frame; 76. Straight tooth bar;

[0031] 8. Contact temperature sensor; 9. Infrared temperature sensing module; 10. Mounting through hole. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 7 As shown, the spindle built-in temperature sensor mechanism includes a spindle housing 1 and a contact temperature sensor 8, the upper and lower sides of the spindle housing 1 are connected with ribs 5, and one side of the spindle housing 1 is connected with a bottom cover plate 4;

[0034] A position change mechanism 2 is provided inside the spindle housing 1, and the position change mechanism 2 dynamically adjusts the position of the contact temperature sensor 8 according to the length of the shaft body 3 and the temperature sensing requirement, thereby sensing the temperature of the shaft body 3 and the bearing at the connection of the shaft body 3;

[0035] A rubber plug 6 is connected through the top of the spindle housing 1, and a positioning mechanism 7 is provided inside the spindle housing 1. The positioning mechanism 7 positions the contact temperature sensor 8 and the infrared temperature sensing module 9, thereby facilitating the disassembly and maintenance of the contact temperature sensor 8 and the infrared temperature sensing module 9.

[0036] In this embodiment, the spindle housing 1 is connected to the outer side of the rubber plug 6 via a mounting through hole 10 that penetrates through the spindle housing 1 .

[0037] In this embodiment, the shifting mechanism 2 includes a micromotor 201, a transmission shaft 202, a gear 203 and a guide rod 204. The micromotor 201 is installed at the top of the spindle housing 1. The output end of the micromotor 201 is connected to the transmission shaft 202. The outer side of the transmission shaft 202 is connected to the gear 203. The tail end of the guide rod 204 is symmetrically welded inside the spindle housing 1. The gear 203 is driven to rotate by the micromotor 201, thereby controlling and meshing the spur gear 76.

[0038] In this embodiment, the positioning mechanism 7 includes a flat iron seat 71, an instrument seat 72, a guide hole 73, a groove 74, a traction frame 75 and a straight tooth bar 76. The flat iron seat 71 is installed on the outside of the instrument seat 72. A groove 74 is opened in the middle of the instrument seat 72. Guide holes 73 are opened on both sides of the flat iron seat 71. A traction frame 75 is welded on one side of the instrument seat 72. The outside of the traction frame 75 is connected with a straight tooth bar 76. The two sides of the contact temperature sensor 8 are positioned by the flat iron seat 71, which facilitates the disassembly and installation of the contact temperature sensor 8.

[0039] In this embodiment, the traction frame 75 is connected to the outer side of the shaft body 3 via a contact temperature sensor 8 disposed on the outer side, and the tail end temperature of the surface of the shaft body 3 is monitored via the contact temperature sensor 8 .

[0040] In this embodiment, the traction frame 75 is meshed with the outer side of the gear 203 through the spur gear 76 arranged on the outer side. The spur gear 76 on the outer side of the traction frame 75 is meshed with the gear 203 to dynamically adjust and control the equipment.

[0041] In this embodiment, the instrument seat 72 is connected to the outer side of the guide rod 204 through the symmetrically arranged guide holes 73, and is wrapped with the guide rod 204 through the symmetrically arranged guide holes 73, thereby guiding the displacement of the instrument seat 72.

[0042] In this embodiment, the instrument seat 72 is connected to both sides of the contact temperature sensor 8 through the flat iron seat 71 symmetrically arranged inside, and the contact temperature sensor 8 is positioned through the instrument seat 72, and then the contact temperature sensor 8 is vertically installed and positioned.

[0043] The actual application of this spindle built-in temperature sensor mechanism includes the following working processes:

[0044] Step 1: The operator first moves the instrument seat 72 to the position directly below the installation through hole 10, and then installs the contact temperature sensor 8 in the groove 74 provided on the surface of the instrument seat 72, so that the two sides of the contact temperature sensor 8 are locked with the outer side of the flat iron seat 71, and then installs the infrared temperature sensing module 9 on one side of the instrument seat 72, so that the infrared temperature sensing module 9 is parallelly aligned with the rolling bearing provided on one side of the spindle housing 1, and then the guide hole 73 on the outer side of the instrument seat 72 is transversely connected with the guide rod 204;

[0045] Step 2: At the same time, the spur gear 76 provided on the outside of the traction frame 75 is meshed with the gear 203, the operator installs the bottom cover plate 4 on one side of the spindle housing 1, locks the bottom cover plate 4 and the spindle housing 1 with bolts, installs the rubber plug 6 on the outside of the installation through hole 10, seals the top of the spindle housing 1 to prevent external dust from being injected from the inside of the installation through hole 10, drives the shaft body 3 to rotate through the motor inside the spindle housing 1, and reduces the friction force of the shaft body 3 during the rotation process through the rolling bearing;

[0046] Step 3: The infrared temperature sensing module 9 uses the infrared radiation emitted from the surface of the object to measure the temperature of the rolling bearing. When the temperature of the object is higher than absolute zero, the infrared temperature sensing module 9 will emit infrared radiation. The intensity of this radiation is proportional to the temperature of the rolling bearing. The infrared temperature sensing module 9 receives this radiation and converts it into electrical signals, and then processes these signals through algorithms to finally obtain the temperature value of the object.

[0047] Step 4: The bottom probe of the contact temperature sensor 8 is in direct contact with the object to be tested and transmits the signal to the external circuit, thereby detecting the heat generated by the operation of the shaft 3. At the same time, according to the detection requirements, the micromotor 201 can be turned on, and the transmission shaft 202 can be driven to rotate by the micromotor 201, and the gear 203 can be driven to rotate by the transmission shaft 202, and the spur gear 76 can be driven to mesh by the gear 203, and the instrument seat 72 can be driven to move laterally by the spur gear 76, so as to dynamically adjust the position of the contact temperature sensor 8;

[0048] Step 5: When the instrument seat 72 is in the process of displacement, the moving range of the instrument seat 72 is controlled by the guide rod 204. When the contact temperature sensor 8 moves to the corresponding position, the micromotor 201 can be turned off, and the bottom end of the spindle housing 1 can be supported and lifted by the ribs 5, thereby facilitating the cooling and circulation of the heat of the equipment.

[0049] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. The spindle has a built-in temperature sensor mechanism, which is characterized by: It comprises a spindle housing (1) and a contact temperature sensor (8), wherein the upper and lower sides of the spindle housing (1) are connected to ribs (5), and one side of the spindle housing (1) is connected to a bottom cover plate (4); A position change mechanism (2) is arranged inside the spindle housing (1), and the position change mechanism (2) dynamically adjusts the position of the contact temperature sensor (8) according to the length of the shaft body (3) and the requirement of temperature sensing, thereby performing temperature sensing on the shaft body (3) and the bearing at the connection of the shaft body (3); A rubber plug (6) is connected and penetrated directly above the spindle housing (1), and a positioning mechanism (7) is provided inside the spindle housing (1). The positioning mechanism (7) positions the contact temperature sensor (8) and the infrared temperature sensing module (9), thereby facilitating the disassembly and maintenance of the contact temperature sensor (8) and the infrared temperature sensing module (9).

2. The spindle built-in temperature sensor mechanism according to claim 1, characterized in that: The spindle housing (1) is connected to the outer side of the rubber plug (6) via a mounting through hole (10) extending therethrough.

3. The spindle built-in temperature sensor mechanism according to claim 1, characterized in that: The shifting mechanism (2) comprises a micromotor (201), a transmission shaft (202), a gear (203) and a guide rod (204); the micromotor (201) is mounted on the top of a spindle housing (1); the output end of the micromotor (201) is connected to the transmission shaft (202); the outer side of the transmission shaft (202) is connected to the gear (203); and the tail end of the guide rod (204) is symmetrically welded inside the spindle housing (1).

4. The spindle built-in temperature sensor mechanism according to claim 3, characterized in that: The positioning mechanism (7) comprises a flat iron seat (71), an instrument seat (72), a guide hole (73), a groove (74), a traction frame (75) and a straight tooth bar (76); the flat iron seat (71) is installed on the outer side of the instrument seat (72); a groove (74) is provided in the middle of the instrument seat (72); guide holes (73) are provided on both sides of the flat iron seat (71); a traction frame (75) is welded on one side of the instrument seat (72); and a straight tooth bar (76) is connected to the outer side of the traction frame (75).

5. The spindle built-in temperature sensor mechanism according to claim 4, characterized in that: The traction frame (75) is connected to the outer side of the shaft body (3) via a contact temperature sensor (8) arranged on the outer side.

6. The spindle built-in temperature sensor mechanism according to claim 4, characterized in that: The traction frame (75) is meshed with the outer side of the gear (203) via a spur gear (76) arranged on the outer side.

7. The spindle built-in temperature sensor mechanism according to claim 4, characterized in that: The instrument seat (72) is connected to the outer side of the guide rod (204) via symmetrically arranged guide holes (73).

8. The spindle built-in temperature sensor mechanism according to claim 4, characterized in that: The instrument seat (72) is connected to both sides of the contact temperature sensor (8) via a flat iron seat (71) symmetrically arranged inside.

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