CN215430826U - Quick high-precision self-positioning device for shaft head of transmission shaft of rolling mill - Google Patents
Quick high-precision self-positioning device for shaft head of transmission shaft of rolling mill Download PDFInfo
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- CN215430826U CN215430826U CN202121466820.1U CN202121466820U CN215430826U CN 215430826 U CN215430826 U CN 215430826U CN 202121466820 U CN202121466820 U CN 202121466820U CN 215430826 U CN215430826 U CN 215430826U
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Abstract
The utility model provides a quick high-precision self-positioning device for a shaft head of a transmission shaft of a rolling mill; consists of a working roll (1), a connecting shaft bracket (2) and a transmission shaft; the transmission shaft consists of a transmission shaft head (3), a cross shaft (4), a transmission shaft body (5) and a transmission shaft fixing sleeve (6); the connecting shaft bracket (2) consists of an axial baffle (2-1), a front positioning hole (2-2), a rear positioning hole (2-3), an adjusting jackscrew (2-4), a front frame body (2-5), a rear frame body (2-6) and a connecting beam (2-7); the shaft head of the transmission shaft has high positioning speed and simple and reliable structure. When the flat head of the working roll is pulled out, the shaft head of the transmission shaft quickly follows up and is accurately positioned in the center of the inner hole of the connecting shaft bracket, the outer circle of the shaft head of the transmission shaft is fixed by the connecting shaft bracket without any drive, and the flat head of the working roll is simple in structure and high in roll changing efficiency.
Description
Technical Field
The utility model relates to the field of cold-rolled strip steel, in particular to a quick high-precision self-positioning device for a shaft head of a transmission shaft of a rolling mill.
Background
For the reversible cold rolling mill adopting the working roll transmission mode, the transmission process of the rolling braking force is as follows: the reduction gearbox is driven by a main transmission motor of the rolling mill, an output shaft of the reduction gearbox drives a transmission shaft, the transmission shaft is matched with a flat head of the working roll through a flat hole on a spindle head of the connection shaft, namely, the flat head of the working roll extends into the flat hole of the spindle head of the connection shaft, and finally, power is transmitted to the working roll by the motor. The height of the upper position and the lower position of the working roll in the rolling process continuously changes along with the fluctuation of the thickness of the strip, and the shaft head of the transmission shaft is connected with the working roll, so that the height position of the shaft head of the transmission shaft and the angle of the connecting shaft also continuously change along with the position of the working roll, and meanwhile, power is transmitted to the working roll.
The working roll needs to be drawn out in the roll changing process, the transmission shaft does not have the support of the working roll flat head at the moment, the shaft head of the transmission shaft needs to be accurately positioned at a fixed roll changing position in the upper direction, the lower direction, the left direction and the right direction, the shaft head central line of the transmission shaft is horizontal, and the problem of poor strength caused by radial dislocation and non-coaxiality is solved when a new working roll flat head enters the shaft.
The traditional roll changing is shown in the attached figure 1, the steps include that the upper working roll is lifted up, the lower working roll falls down to the height of the roll changing track of the upper working roll, a shaft head holding block close to one side of the working roll at a cross hinged point of a transmission shaft stretches out under the driving of an oil cylinder, holds the shaft head, fixes the shaft head on the roll changing position, then takes out and pushes the roll, but adopts the traditional shaft head to hold the device tightly, and the following problems exist:
(1) the repeated positioning precision of the shaft head of the transmission shaft at each roll changing position is poor. The tight piece of tightly embracing is close to the motion to transmission shaft axle center direction simultaneously to two V type spindle heads about every transmission shaft presss from both sides tightly to controlling the spindle head and embracing tightly the piece and need hydro-cylinder drive, the precision that the piece pressed from both sides tight spindle head is embraced to the spindle head receives hydro-cylinder pressure and the influence of stroke very big, and the repeated positioning precision of spindle head roll change position is very low, and the position of spindle head all has the deviation with the position of predetermineeing the ideal at every turn: the left and right positions and the upper and lower positions of the central line of the shaft head are not easy to coincide with the central line of the flat head of the working roll, and the flat head of the working roll is difficult to insert into the shaft head of the transmission shaft due to the dislocation of the center.
(2) The precision of the horizontal angle of the central line of the shaft head of the transmission shaft. The shaft head and the shaft body of the transmission shaft are connected in a cross-shaped hinged mode. The oil cylinder is adopted for driving the bracket of the shaft body of the transmission shaft, after the bracket supports the shaft body of the transmission shaft, the higher or lower position of the shaft body can influence the angle of the shaft head of the transmission shaft, the rising or lowering posture and the stress state of the shaft head are caused, the shaft head of the transmission shaft is not level, the flat head of a new working roll is dislocated with the transmission shaft, and the flat head of the working roll is very difficult to insert into the flat hole of the shaft head of the transmission shaft.
(3) When the flat head of the working roll enters the inner hole of the shaft head of the transmission shaft, the best state is that the center lines of the flat head of the working roll and the shaft head of the transmission shaft are superposed, and the matching surfaces of the flat head of the working roll and the shaft head of the transmission shaft are not contacted in the entering process. Their central line dislocation of traditional structure and alternately causes the homalocephalus and transmission shaft spindle nose to contact each other, advances the roller process and produces relative grinding, causes the contact surface to pull the fluff, has aggravated the resistance that the worker roller homalocephalus got into the transmission shaft spindle nose more for need very big thrust can not insert the worker roller homalocephalus in the transmission shaft spindle nose hole, causes the overload trip of drive worker roller entry motor.
(4) In order to enable the flat head of the working roll to be inserted into the inner hole of the shaft head of the transmission shaft, the diameter of the inner hole of the transmission shaft can only be made to be larger than that of the flat head of the working roll (close to 1mm), so that the matching precision and the transmission precision between the flat head of the working roll and the flat head of the working roll are greatly reduced, and the product quality is influenced.
In the production process, the rotating speed of the working roll is highest, the roll surface is worn quickly, and the surface defects such as the wear and scratch of the surface of the working roll are directly reflected on the surface of the rolled strip steel, so that in order to improve the product quality of the surface of the strip steel, each coil (steel coil, aluminum coil, copper coil and the like) is required to be rolled in the last pass, the old working roll is pulled out and detached, a new working roll with a smooth surface is replaced, and the flat head of the new working roll is horizontally inserted into the shaft head of the transmission shaft. The problem that the shaft head is inaccurately positioned enables the roll changing process to occupy mass production time, automatic roll changing cannot be realized, and production efficiency is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a quick high-precision self-positioning device for a shaft head of a transmission shaft of a rolling mill. The quick high-precision self-positioning device for the shaft head of the transmission shaft of the rolling mill is applied to the production of cold-rolled coils, the repeated positioning precision of the transmission shaft and the levelness precision of the central line of the shaft head are high during roll changing, a connecting shaft bracket does not need any driving, the connecting shaft has self-positioning capacity, the structure is simple, and the roll changing efficiency is high.
The utility model is realized by the following technical scheme:
the utility model relates to a quick self-positioning device for a shaft head of a transmission shaft of a rolling mill, which consists of a working roll 1, a connecting shaft bracket 2 and the transmission shaft;
the transmission shaft consists of a transmission shaft head 3, a cross shaft 4, a transmission shaft body 5 and a transmission shaft fixing sleeve 6; the transmission shaft head 3 consists of a front positioning excircle 3-1, a rear positioning excircle 3-2 and an inner hole 3-3; the front positioning excircle 3-1, the rear positioning excircle 3-2 and the inner hole 3-3 are on the same axis;
the spindle bracket 2 consists of an axial baffle 2-1, a front positioning hole 2-2, a rear positioning hole 2-3, an adjusting jackscrew 2-4, a front frame body 2-5, a rear frame body 2-6 and a connecting beam 2-7;
the flat head 1-1 of the working roll 1 is matched and connected with the inner hole 3-3 of the shaft head 3 of the transmission shaft;
the diameter of the front positioning excircle 3-1 is smaller than that of the rear positioning excircle 3-2; the diameter of the front positioning excircle 3-1 is the same as the diameter of the front positioning hole 2-2 in size, so that a coaxial tolerance fit relation is formed; the diameter of the rear positioning excircle 3-2 is the same as the diameter of the rear positioning hole 2-3 in size, so that a coaxial tolerance fit relation is formed;
a group of jackscrews 2-4 are arranged on both sides of the bottom of the spindle bracket 2; the jackscrew 2-4 is used for adjusting the position of the rear positioning excircle 3-2, so that the rear positioning excircle 3-2 of the shaft is concentric with the bracket positioning hole 2-3;
the front positioning excircle 3-1 of the transmission shaft head 3 can be inserted into and pulled out of the front positioning hole 2-2 of the spindle bracket 2, and the rear positioning excircle 3-2 of the transmission shaft head 3 can be inserted into and pulled out of the rear positioning hole 2-3 of the spindle bracket 2; when the roller is changed, the two excircle front positioning excircles 3-1 and the back positioning excircles 3-2 of the transmission shaft head 3 can enter the front positioning holes 2-2 and the back positioning holes 2-3 of the front positioning holes and the back positioning holes of the spindle bracket 2 simultaneously under the guidance of the inner hole 3-3 of the transmission shaft head 3 and the flat head 1-1 of the working roller, so that the self-positioning of the radial position of the transmission shaft head 3 and the horizontal direction of the central line of the spindle head is realized. The position and the levelness of the shaft head 3 of the transmission shaft can realize that the flat head 1-1 of a new working roll smoothly enters the shaft head of the transmission shaft, the repeated positioning precision is high, meanwhile, the spindle bracket does not need any driving, the structure is simple, and the roll changing efficiency is high.
As the front positioning excircle 3-1 and the rear positioning excircle 3-2 of the shaft head 3 of the transmission shaft smoothly enter the corresponding front positioning hole 2-2 and the rear positioning hole 2-3, the excircle of the shaft needs to be slightly smaller than the inner hole of the positioning hole, and a small gap exists. After the working roll 1 is drawn out during roll changing, under the action of gravity, the bottom of the rear positioning excircle 3-2 is lapped at the bottom of the rear positioning hole 2-3 as shown in the figure, and the problem of non-concentricity of two circles can be caused, so that the center line is staggered when the working roll flat head 1-1 enters the shaft head inner hole 3-3 of the transmission shaft, and therefore the jackscrew 2-4 can adjust the position of the rear positioning excircle 3-2, and the rear positioning excircle 3-2 is concentric with the rear positioning hole 2-3.
The transmission shaft body 5 adopts a spline shaft/spline sleeve structure and has a telescopic function, namely the installation length can be changed. A compression spring is arranged between the spline shafts/spline sleeves of the transmission shaft body 5, when the transmission shaft is axially pressed, the transmission shaft body is shortened, and after the axial pressure is removed, the transmission shaft body restores to the original length.
The flat head 1-1 of the working roll 1 can be inserted into an inner hole 3-3 of the shaft head 3 of the transmission shaft, when the flat head 1-1 of the working roll 1 is inserted into the inner hole 3-3 of the shaft head 3 of the transmission shaft (working state), the working roll 1 applies a rightward compression force to the transmission shaft in the axial direction, the front positioning excircle 3-1 and the rear positioning excircle 3-2 horizontally move rightwards along the axial direction respectively, the shaft head of the transmission shaft is separated from the front positioning hole 2-2 and the rear positioning hole 2-3 of the spindle connecting bracket, and the shaft head of the transmission shaft can rotate, move and incline along with the working roll after being separated from the constraint of the spindle connecting bracket; when an old roller is replaced, the flat head of the working roller 1 is gradually pulled out of the inner hole of the transmission shaft head 3, under the action force of a compression spring, the transmission shaft head 3 closely follows the rebound and extension of the working roller, meanwhile, the flat head of the working roller 1 and the inner hole of the transmission shaft head 3 are used as guides, the front positioning excircle 3-1 enters the front positioning hole 2-2 under the guide of the working roller, the rear positioning excircle 3-2 enters the rear positioning hole 2-3 under the guide of the working roller, and the front positioning excircle extends until the end face of the transmission shaft head is propped against the axial baffle 2-1 of the connecting shaft bracket 2.
The diameter of the front positioning excircle 3-1 is smaller than that of the rear positioning excircle 3-2; the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 of the connecting shaft bracket 2 are on the same axis, and the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 are horizontal when the connecting shaft bracket is installed. When a new working roller is firstly replaced, the upper, lower, left and right positions of the connecting shaft bracket are adjusted under the condition that the axis of the central line of the connecting shaft bracket is kept horizontal, so that the flat head of the working roller 1 is aligned and smoothly inserted into the inner hole of the shaft head 3 of the transmission shaft, and the axis of the working roller and the central line of the inner hole of the shaft head of the transmission shaft are on the same axis, at the moment, the structural characteristics of the utility model ensure that the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 of the connecting shaft bracket 2 are on the same line with the axis of the working roller. After the flat head of the working roll 1 completely enters the inner hole of the shaft head 3 of the transmission shaft, the working roll 1 continuously moves rightwards, then the working roll 1 pushes the shaft head 3 of the transmission shaft to move rightwards, the shaft head 3 of the transmission shaft is separated from the shaft bracket 2 of the connecting shaft, and the transmission shaft can drive the working roll to rotate.
When the working roll needs to be drawn out during roll changing, the transmission shaft head 3 can enter the spindle bracket 2 automatically and accurately in a self-positioning mode due to the guiding effect of the flat head of the working roll, so that the transmission shaft head 3 can be automatically positioned quickly and accurately, and the working roll can be smoothly inserted into the inner hole of the transmission shaft head 3 during new working roll changing.
The utility model has the following advantages:
(1) the spindle head of the transmission shaft related by the utility model has high repeated positioning precision, when the working roll needs to be pulled out during roll changing, the inner hole of the spindle head of the transmission shaft is in a state of being matched with the outer circle of the flat head of the working roll, and because the flat head of the working roll has an accurate guiding function on the spindle head of the transmission shaft, when the flat head of the working roll is pulled out, the central line of the outer circle of the spindle head of the transmission shaft is pushed by the action of a spring to axially and accurately enter the inner hole of the spindle connecting bracket concentrically with the flat head of the working roll; because the positioning of the shaft head of the transmission shaft by the inner hole of the connecting shaft bracket is of a double-hole positioning structure, the shaft head of the transmission shaft is positioned on the connecting shaft bracket completely and horizontally after the working roll is replaced and pulled out, the accurate positioning is realized, and the phenomenon of head lowering or head raising is avoided.
(2) The shaft head of the transmission shaft has high positioning speed and simple and reliable structure. When the flat head of the working roll is pulled out, the shaft head of the transmission shaft quickly follows up and is accurately positioned in the center of the inner hole of the connecting shaft bracket, the outer circle of the shaft head of the transmission shaft is fixed by the connecting shaft bracket without any drive, and the flat head of the working roll is simple in structure and high in roll changing efficiency.
(3) The utility model relates to a transmission shaft head inner hole and a working roll flat head outer circle matching precision is high, and the transmission precision is improved.
Drawings
FIG. 1 is a schematic view of a conventional spindle clamping assembly;
FIG. 2 is a schematic structural view of a self-positioning device for a spindle head of a transmission shaft of a rolling mill;
FIG. 3 is an isometric view of a rolling mill drive shaft head self-positioning device;
FIG. 4 is a schematic structural view of a spindle head of a transmission shaft in a state that the working roll is completely fed;
FIG. 5 is a schematic structural view of a spindle head of a transmission shaft in a state of completion of withdrawing a work roll;
FIG. 6 is an isometric view of a detailed construction of the spindle carrier;
wherein, 1 is a working roll, 2 is a connecting shaft bracket, 3 is a transmission shaft head, 4 is a cross shaft, 5 is a transmission shaft body, and 6 is a transmission shaft fixing sleeve;
1-1 is a flat head, 2-1 is an axial baffle, 2-2 is a front positioning hole, 2-3 is a rear positioning hole, 2-4 is an adjusting jackscrew, 2-5 is a front frame body, 2-6 is a rear frame body, and 2-7 is a connecting beam;
3-1 is a front positioning excircle, 3-2 is a rear positioning excircle, and 3-3 is a transmission shaft inner hole.
Detailed Description
The present invention will be described in detail with reference to specific examples. It should be noted that the following examples are only illustrative of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The embodiment of the utility model relates to a quick self-positioning device for a shaft head of a transmission shaft of a rolling mill, which is shown in figures 2 and 3: consists of a working roll 1, a connecting shaft bracket 2 and a transmission shaft;
the transmission shaft consists of a transmission shaft head 3, a cross shaft 4, a transmission shaft body 5 and a transmission shaft fixing sleeve 6; the transmission shaft head 3 consists of a front positioning excircle 3-1, a rear positioning excircle 3-2 and an inner hole 3-3; the front positioning excircle 3-1, the rear positioning excircle 3-2 and the inner hole 3-3 are on the same axis;
the flat head 1-1 of the working roll 1 is matched and connected with the inner hole 3-3 of the shaft head 3 of the transmission shaft;
the spindle bracket 2 is composed of an axial baffle 2-1, a front positioning hole 2-2, a rear positioning hole 2-3, an adjusting jackscrew 2-4, a front frame body 2-5, a rear frame body 2-6 and a connecting beam 2-7, and is shown in figure 6.
The diameter of the front positioning excircle 3-1 is smaller than that of the rear positioning excircle 3-2; the diameter of the front positioning excircle 3-1 is the same as the diameter of the front positioning hole 2-2 in size, so that a coaxial tolerance fit relation is formed; the diameter of the rear positioning excircle 3-2 is the same as the diameter of the rear positioning hole 2-3 in size, so that a coaxial tolerance fit relation is formed.
The flat head 1-1 of the working roll 1 can be inserted into an inner hole 3-3 of the shaft head 3 of the transmission shaft, when the flat head 1-1 of the working roll 1 is inserted into the inner hole 3-3 of the shaft head 3 of the transmission shaft (working state), as shown in figure 4, the working roll 1 applies a rightward compression force to the transmission shaft in the axial direction, the front positioning excircle 3-1 and the rear positioning excircle 3-2 horizontally move rightwards along the axial direction respectively, the shaft head of the transmission shaft is separated from the front positioning hole 2-2 and the rear positioning hole 2-3 of the spindle connecting bracket, and the shaft head of the transmission shaft can rotate, move and incline along with the working roll after being separated from the constraint of the spindle connecting bracket; when an old roller is replaced, the flat head of the working roller 1 is gradually pulled out of the inner hole of the transmission shaft head 3, under the action force of a compression spring, the transmission shaft head 3 closely follows the rebound and extension of the working roller, meanwhile, the flat head of the working roller 1 and the inner hole of the transmission shaft head 3 are used as guides, the front positioning excircle 3-1 enters the front positioning hole 2-2 under the guide of the working roller, the rear positioning excircle 3-2 enters the rear positioning hole 2-3 under the guide of the working roller, and the front positioning excircle extends until the end face of the transmission shaft head is propped against the axial baffle 2-1 of the connecting shaft bracket 2.
The inner hole 3-3, the front positioning excircle 3-1 and the rear positioning excircle 3-2 of the shaft head 3 of the transmission shaft are on the same axis; the diameter of the front positioning excircle 3-1 is smaller than that of the rear positioning excircle 3-2; the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 of the spindle bracket 2 are on the same axis, and the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 are horizontal when the spindle bracket is installed.
When a new working roller is firstly replaced, the upper, lower, left and right positions of the connecting shaft bracket are adjusted under the condition that the axis of the central line of the connecting shaft bracket is kept horizontal, so that the flat head of the working roller 1 is aligned and smoothly inserted into the inner hole of the shaft head 3 of the transmission shaft, and the axis of the working roller and the central line of the inner hole of the shaft head of the transmission shaft are on the same axis, at the moment, the structural characteristics of the utility model ensure that the central lines of the front positioning hole 2-2 and the rear positioning hole 2-3 of the connecting shaft bracket 2 are on the same line with the axis of the working roller. After the flat head of the working roll 1 completely enters the inner hole of the shaft head 3 of the transmission shaft, the working roll 1 continuously moves rightwards, then the working roll 1 pushes the shaft head 3 of the transmission shaft to move rightwards, the shaft head 3 of the transmission shaft is separated from the shaft bracket 2 of the connecting shaft, and the transmission shaft can drive the working roll to rotate.
When the roll change needs to draw out the working roll, see fig. 5: due to the guiding effect of the flat head of the working roll, the transmission shaft head 3 can enter the spindle bracket 2 automatically and accurately in a self-positioning mode, so that the transmission shaft head 3 can be automatically positioned quickly and accurately, and when a new working roll is replaced, the working roll can be smoothly inserted into the inner hole of the transmission shaft head 3.
Example 2
The embodiment of the utility model relates to a quick self-positioning device for a shaft head of a transmission shaft of a rolling mill, which is shown in figures 2 and 3: consists of a working roll 1, a connecting shaft bracket 2 and a transmission shaft;
the transmission shaft consists of a transmission shaft head 3, a cross shaft 4, a transmission shaft body 5 and a transmission shaft fixing sleeve 6; the transmission shaft head 3 consists of a front positioning excircle 3-1, a rear positioning excircle 3-2 and an inner hole 3-3; the front positioning excircle 3-1, the rear positioning excircle 3-2 and the inner hole 3-3 are on the same axis;
the flat head 1-1 of the working roll 1 is matched and connected with the inner hole 3-3 of the shaft head 3 of the transmission shaft;
the spindle bracket 2 is composed of an axial baffle 2-1, a front positioning hole 2-2, a rear positioning hole 2-3, an adjusting jackscrew 2-4, a front frame body 2-5, a rear frame body 2-6 and a connecting beam 2-7, and is shown in figure 6.
The diameter of the front positioning excircle 3-1 is smaller than that of the rear positioning excircle 3-2; the diameter of the front positioning excircle 3-1 is the same as the diameter of the front positioning hole 2-2 in size, so that a coaxial tolerance fit relation is formed; the diameter of the rear positioning excircle 3-2 is the same as the diameter of the rear positioning hole 2-3 in size, so that a coaxial tolerance fit relation is formed.
Two sides of the bottom of the spindle bracket 2 are respectively provided with a group of jackscrews 2-4; because the front positioning excircle 3-1 and the rear positioning excircle 3-2 of the shaft head 3 of the transmission shaft need to accurately enter the front positioning hole 2-2 and the rear positioning hole 2-3 corresponding to the front positioning excircle and the rear positioning hole, the condition that the excircles are slightly smaller than the inner holes of the positioning holes must be met; after the working roll 1 is drawn out during roll changing, under the action of gravity, the bottom of the outer circle 3-2 of the shaft is lapped at the bottom of the positioning hole 2-3, the phenomenon of two circles of decentration can occur, and the center line of the flat head 1-1 of the working roll enters the inner hole 3-3 of the shaft head of the transmission shaft to be dislocated, in the embodiment, two groups of jackscrews 2-4 are respectively arranged on two sides of the bottom of the spindle bracket 2, and the position of the rear positioning outer circle 3-2 can be adjusted through the jackscrews 2-4, so that the rear positioning outer circle 3-2 and the rear positioning hole 2-3 are concentric, the phenomenon of two circles of decentration is avoided, the center line of the flat head 1-1 of the working roll can accurately enter the inner hole 3-3 of the shaft head of the transmission shaft, and the accurate effect is achieved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (3)
1. A quick high-precision self-positioning device for a shaft head of a transmission shaft of a rolling mill is characterized by comprising a working roll (1), a connecting shaft bracket (2) and the transmission shaft;
the transmission shaft consists of a transmission shaft head (3), a cross shaft (4), a transmission shaft body (5) and a transmission shaft fixing sleeve (6); the transmission shaft head (3) consists of a front positioning excircle (3-1), a rear positioning excircle (3-2) and an inner hole (3-3); the front positioning excircle (3-1), the rear positioning excircle (3-2) and the inner hole (3-3) are on the same axis;
the flat head (1-1) of the working roll (1) is connected with the inner hole (3-3) of the transmission shaft head (3) in a matching way;
the spindle bracket (2) consists of an axial baffle (2-1), a front positioning hole (2-2), a rear positioning hole (2-3), an adjusting jackscrew (2-4), a front frame body (2-5), a rear frame body (2-6) and a connecting beam (2-7);
the diameter of the front positioning excircle (3-1) is smaller than that of the rear positioning excircle (3-2); the diameter of the front positioning excircle (3-1) is the same as that of the front positioning hole (2-2), so that a coaxial tolerance fit relation is formed; the diameter of the rear positioning excircle (3-2) is the same as that of the rear positioning hole (2-3), and a coaxial tolerance fit relation is formed.
2. The rolling mill transmission shaft head rapid high-precision self-positioning device as recited in claim 1, characterized in that the transmission shaft body (5) is a spline shaft/spline sleeve structure with a telescopic function.
3. The quick high-precision self-positioning device for the shaft head of the transmission shaft of the rolling mill according to claim 1, characterized in that a group of jackscrews (2-4) are arranged on two sides of the bottom of the spindle bracket (2); the jackscrew (2-4) is used for adjusting the position of the rear positioning excircle (3-2) to enable the rear positioning excircle (3-2) of the shaft to be concentric with the rear positioning hole (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121466820.1U CN215430826U (en) | 2021-06-29 | 2021-06-29 | Quick high-precision self-positioning device for shaft head of transmission shaft of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121466820.1U CN215430826U (en) | 2021-06-29 | 2021-06-29 | Quick high-precision self-positioning device for shaft head of transmission shaft of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215430826U true CN215430826U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121466820.1U Active CN215430826U (en) | 2021-06-29 | 2021-06-29 | Quick high-precision self-positioning device for shaft head of transmission shaft of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215430826U (en) |
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2021
- 2021-06-29 CN CN202121466820.1U patent/CN215430826U/en active Active
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