CN214698791U - Punching main spindle box 7210 matched with bearing gap control spring pressing device - Google Patents

Abstract

The utility model relates to the technical field of bearing clearance adjusting equipment, in particular to a punching gear main shaft box 7210 matched bearing clearance control elastic pressing device, a spring sleeve body mechanism replaces an original fastener, zero clearance control of a main shaft matched bearing of an original box body is realized, zero clearance control of a main bearing can be realized by directly depending on the spring sleeve body mechanism when a main shaft box mechanism is newly manufactured, and the bearing can run under a zero clearance state, thereby not only avoiding the bearing which is easy to generate heat and burn damage when the bearing clearance is adjusted by major repair of the original box body every time, but also avoiding aggravating the jumping of a punch head due to the increase of the running wear clearance of the bearing, further ensuring that the rotary punching gear main shaft box can run under the condition of intact rotation precision for a long period, in addition, the punched tooth profile is regular under the state, the service life of the punching die after one-time grinding is obviously prolonged, the continuity and the consistency of the quality of the produced metal rack are greatly improved, but also relatively reduces the workload of equipment maintenance.

Description

Punching main spindle box 7210 matched with bearing gap control spring pressing device

Technical Field

The utility model relates to a bearing clearance adjustment equipment technical field especially relates to towards suppression device of tooth headstock 7210 pairing bearing clearance control.

Background

The metal rack for the carding machine is completed on a punching and quenching coil production line, the production line comprises unwinding, tooth punching, annealing, quenching, tempering and coiling, and rotary tooth punching is one of the stations; the length of a large roller of a carding machine is required to be nearly ten thousand meters when a metal rack is fully wrapped, the product can be finished on a production line within 4-8 hours, the product is required to be continuously finished without stopping in order to keep the consistency of the whole length of the product, and once the production is suspended in the midway, the abnormal annealing and quenching of a section of the product at the suspension position is formed, such as a hard section with insufficient annealing, a soft section with insufficient quenching or a hard section with excessive quenching; the midway parking maintenance or overhaul of the production line is generally caused by rotating a tooth punching station, namely, a die is knocked, the tooth profile is not smooth and clean due to hairiness of the edge of the die, or the tooth profile punched by the overlarge gap of the die is irregular, and the parking and the die replacement are required; the running precision and reliability of the tooth punching station directly restrict whether the whole production line can run continuously with high efficiency, the tooth punching station is a key station of the whole production line, and the key station for determining the running precision and reliability of the tooth punching station is the working state of a punching die;

referring to fig. 4, the original design of the main shaft box of the rotary punching machine has defects, the adjustment of the clearance of the matched bearing is very inconvenient, the main shaft body needs to be disassembled from the main shaft box for adjustment, when the clearance of the bearing is increased and cannot be adjusted in time, the tooth punching effect is poor, the tooth shape is irregular, the durability of a punching die is poor, the frequent disassembly is caused during the timely adjustment, and the precision of the main shaft box body mechanism is reduced; in addition, the main shaft body is assembled and well adjusted to match the pre-tightening pressure of the bearings, and after the main shaft body is assembled into a main shaft box, the rotating resistance (commonly called the biting strength) of the main shaft is often increased due to the coaxiality deviation of the box and the shaft, so that the pre-tightening force of the bearings is difficult to grasp before the box is placed, and the whole machine can be normally started only by operating the whole machine for 1-2 shifts under the empty load;

if a set of utility model method can be designed, the play of the positioning bearing is controlled under the condition of not disassembling the main shaft box of the rotary punching gear, so that the positioning bearing operates under the condition of no play or small play, the precision loss caused by repeatedly disassembling and adjusting the play of the bearing is avoided for improving the one-time matched die service life of the punching die and the quality of the coil product after the punching quenching and the rolling can be realized for the rotary punching gear mechanism, and the method has very important value and significance.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a dash tooth headstock 7210 and mate suppress device to bearing clearance control to the elastic sleeve body mechanism replaces former fastener, realizes the zero clearance control of the main bearing of former main shaft box, has just so avoidd the crossing of tooth punching machine die cutter effectively, prolongs the die and once to the last life of mode computer, improves the tooth form tooth quality of metal rack, improves the rate of opening a platform that quenches the spiral, and has reduced the work load of equipment maintenance.

The specific technical scheme is as follows: punching tooth headstock 7210 is to suppress device of bearing clearance control, box including the headstock, the round hole that the horizontal both ends lateral wall of box was equipped with the round hole of contrasting round hole and left end is equipped with in the round hole of pairing bearing, right-hand member is equipped with radial positioning bearing, the pairing bearing includes two paired bearings, the common cover of pairing bearing and radial positioning bearing is equipped with main shaft and main shaft left end and is provided with the drift dish, be provided with the die cutter on the drift dish, its characterized in that, the cover is equipped with to support and establishes the main epaxial big bullet cover at the little bullet cover of pairing bearing right-hand member face and little bullet cover through the elastic component connection cover on the main shaft.

Preferably, the upper portion of the box body is of a solid structure, a through hole which is communicated left and right is formed in the position of the solid structure, the 7210 counter bearing is arranged at the left end of the through hole, and the radial positioning bearing is arranged at the right end of the through hole.

Preferably, a through sleeve is arranged between the pairing bearing and the radial positioning bearing and is in transition fit with the through hole, and the outer circular surface of the large elastic sleeve is in clearance fit with the inner wall of the through sleeve.

Preferably, a plurality of taper holes are arranged on the outer circular surface of the through sleeve at intervals, taper holes corresponding to the taper holes one to one are formed in the box body, and the taper holes are connected with the taper holes through taper pins.

Preferably, the elastic member is a compression spring.

Preferably, eight compression springs are arranged between the large elastic sleeve and the small elastic sleeve at equal intervals.

Preferably, the big elastic sleeve is in clearance fit with the main shaft.

Preferably, the number of the punching knives is set to be 1-6.

Preferably, the main shaft is sleeved with a stop gasket matched with the round nut.

The utility model has the advantages that: the utility model discloses replace former fastener with the shell mechanism, realize the zero clearance control of the main shaft pairing bearing of former box, can directly rely on shell mechanism to realize the zero clearance control of main bearing again when newly making main shaft box mechanism, and the bearing can move under the zero clearance state, both avoided former box and repaired every time and adjusted the initial operation of bearing clearance and easily generate heat and burn and lose the bearing, can not aggravate the beating of drift because of bearing running wear clearance increases, and then guarantee that rotatory tooth punching machine main shaft box can move under intact rotation precision condition for a long time, and under this state not only the tooth profile of punching out is regular, throw after the coping of die life also showing and prolonging, the continuity and the uniformity of the metal rack quality of producing promote by a wide margin, and also relatively reduced the work load of equipment maintenance; in addition, the part of the spindle box, where the spindle is placed, is set to be of a solid structure, and the through hole is formed in the solid structure, so that the coaxiality of the holes is improved, and the deviation of the spindle is reduced as much as possible.

Drawings

FIG. 1 is an isometric, oblique, cross-sectional view of the present invention;

fig. 2 is an isometric oblique view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is an assembly schematic diagram of the headstock of the present invention before the casing is modified;

FIG. 5 is a schematic view of the connection between the large and small elastic sleeves of the present invention;

fig. 6 is an explosion schematic view of the suppressing device of the present invention;

fig. 7 is a schematic sectional view of the improved headstock of the present invention.

Detailed Description

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings in which fig. 1-7 are incorporated. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1, this embodiment provides a pressing device for controlling clearance between a tooth punching spindle box 7210 and a counter bearing, which comprises a box 1 of the spindle box, as shown in fig. 4, after the assembly in the original spindle box is completed (the sealing, lubricating and assembling parts are the prior art, which is not explained in this embodiment), after a period of operation, the clearance between the rolling members of two bearings of the counter bearing 3 will inevitably increase, when the bearing clearance becomes large and cannot be adjusted in time, the tooth punching effect will not be ideal, the tooth profile will not be regular and the die durability will be poor, therefore, the corresponding operator will need to repair and adjust the clearance in an irregular time, but will cause a large work load to the operator, therefore, we set the pressing device for the counter bearing 3 on the spindle 13 to adjust the clearance between the rolling members of the counter bearing 3, referring to the attached drawings 1, 3 and 5, during assembly, a small elastic sleeve 4 in an elastic device is attached to the right end face of a right bearing in a counter bearing 3, the small elastic sleeve 4 is connected with a large elastic sleeve 5 through an elastic piece, so that the extrusion force of the small elastic sleeve 4 to the counter bearing 3, namely the limiting force, can be changed by adjusting the relative position of the large elastic sleeve 5, so that the gap between two bearings in the counter bearing 3 is adjusted, an external thread is arranged at the relevant part of a main shaft 13, a round nut 6 is in threaded fit on the external thread, the external thread has thread self-locking property (namely a thread lead angle is larger than an equivalent friction angle), so that the round nut 6 is prevented from loosening when not subjected to external force, the relative position of the large elastic sleeve 5 can be adjusted by screwing the round nut 6, and the pre-tightening force of the counter bearing 3 is adjusted before a main shaft body is assembled into a box, a stop washer 11 can be arranged between the large elastic sleeve 5 and the round nut 6 and can be matched with the round nut 6 to prevent the round nut 6 from loosening, and a matched 7210AC/P4DBA belongs to a high-precision angular contact ball bearing (DBA means back-to-back);

it should be noted that the large elastic sleeve 5 and the small elastic sleeve 4 are made of materials with high wear resistance, heat resistance, toughness and strength, the outer diameter of the large elastic sleeve 5 is larger than that of the small elastic sleeve 4, in the embodiment, the model of the matched bearing 3 is 7210AC/P4DBA which belongs to a high-precision angle contact ball bearing, the DBA means back-to-back, and the components (inner ring-ball-outer ring) of the matched bearing are in a zero-clearance state under elastic extrusion, so that when the bearing operates and generates thermal expansion, the pressure spring is only slightly compressed and the bearing is not burnt by transitional extrusion, and when the bearing is worn after a certain operation period, the pressure spring is only slightly extended, and the micro-expansion of the pressure spring is very small relative to the total pressure stroke of the pressure spring, so that the matched bearing can operate under the designed pretightening force condition for a long time, and the 7210AC/P4DBA bearing used for the first time belongs to zero abrasion, a red copper foil gasket is omitted, the red copper foil gasket is required to be added when the main shaft box is overhauled and reassembled, the thickness of the red copper foil gasket is 0.05mm, the thickness deviation is small enough (less than or equal to 0.005mm), and the edge cannot be folded or curled.

Embodiment 2, on the basis of embodiment 1, referring to fig. 4, the original housing 1 of the headstock is hollow, round holes 2 are formed on two opposite side walls, and then a counter bearing 3 and a radial positioning bearing are respectively arranged in the two round holes 2, but the round holes 2 are processed in stages in the processing, so that a certain deviation occurs in the coaxiality processing between the two round holes 2, and the deviation occurs easily in the coaxiality between the counter bearing 3 and the radial positioning bearing in the assembling or after a period of use, so that referring to fig. 7, the upper part of the housing 1 of the headstock is set to be a solid structure, and a through hole 7 which is through from left to right is arranged at the solid structure part, so that the processing is more convenient, the disassembling and assembling are also more convenient, and the counter bearing 3 is positioned at the left end of the through hole 7, the radial positioning bearing is positioned at the right end of the through hole 7;

in addition, in order to more conveniently control the distance between the pairing bearing 3 and the radial positioning bearing, referring to fig. 3, a through sleeve 8 is arranged between the pairing bearing 3 and the radial positioning bearing (in practice, a shaft sleeve is abutted between the right end face of the through sleeve 8 and the radial positioning bearing, which forms a lubricating seal for the radial positioning bearing together with other components, belongs to the prior art and is not described herein), and the outer wall of the through sleeve 8 is in transition fit with the inner wall of the through hole 7, so that the through sleeve 8 cannot easily move after assembly to influence the distance between the pairing bearing 3 and the radial positioning bearing, a sliding space of the large elastic sleeve 5 is reserved in the through sleeve 8, the inner diameter of the through sleeve 8 is slightly larger than the outer diameter of the large elastic sleeve 5, and abrasion caused by the contact between the large elastic sleeve 5 and the inner wall of the through sleeve 8 when the large elastic sleeve 5 rotates along with the main shaft 13 is avoided.

Embodiment 3, on the basis of embodiment 2, in order to make the through sleeve 8 be limited, we set a plurality of taper holes at intervals on the outer circumferential surface of the through sleeve 8, in this embodiment, three taper holes are set at intervals in a surrounding manner, and the box body 1 is provided with taper holes corresponding to the taper holes one to one, so that after the through sleeve 8 is assembled into the through hole 7, as long as the taper holes correspond to the taper holes, and then the through sleeve is connected through the taper pin 9, so that the through sleeve 8 is limited.

Embodiment 4, on the basis of embodiment 2, the elastic member adopts a compression spring 10, when the compression spring 10 is selected, the elasticity, the sensitivity and the stability of the compression spring should be considered, and the elasticity of the compression spring 10 should be strong enough to overcome the axial force generated in the bearing process of the 7210 bearing, and multiple experiments prove that when the diameter of the steel wire of the compression spring 10 is selected to be phi 0.8mm, the elasticity and the sensitivity are high, so when the compression spring 10 is selected, the diameter of the spring wire is not less than ɸ 0.8.8 mm, referring to fig. 5, eight compression springs 10 are arranged on the opposite end faces of the large spring sleeve 5 and the small spring sleeve 4 at equal intervals, so that the extrusion force can be transmitted between the two compression springs more stably.

Example 5 on the basis of examples 1 to 3, we fit the large elastic sleeve 5 with the main shaft 13 in a clearance fit mode, so that the large elastic sleeve 5 can be driven more easily during clearance adjustment.

In example 6, the number of the punching blades is set to 1 to 6 in addition to example 1.

In addition, when the newly assembled and adjusted spindle box body 1 is detected by the hand wheel disc rotation, a bite dead point cannot exist within 360 degrees, and when the newly assembled and adjusted spindle box body is detected by the hand wheel disc rotation, the inertia rotation after hand release is half rotation to one rotation.

The utility model discloses replace former fastener with the elastic sleeve body mechanism, realize the 3 zero clearance control of the counter bearing of former box main shaft, can directly rely on elastic sleeve body mechanism to realize the zero clearance control of main location bearing when newly making main shaft box mechanism again, and the bearing can move under the zero clearance state, both avoided former main shaft box body mechanism to overhaul at every turn and adjust the bearing clearance initial motion and easily generate heat and burn and lose the bearing, can not aggravate the beating of drift because of bearing running wear clearance increases, and then guarantee that rotatory tooth punching machine main shaft box can long-term operation under intact rotation precision condition, and under this state not only the tooth profile of punching is regular, throw after one time of die and use life also is showing and prolongs, the continuity and the uniformity of the metal rack quality of producing promote by a wide margin, and also relatively reduced the work load of equipment maintenance; in addition, the position of the spindle 13 on the spindle box is set to be of a solid structure, and the through hole 7 is arranged at the solid structure position, so that the coaxiality of the holes is improved, and the deviation of the spindle 13 is reduced as much as possible.

The above description is only for the purpose of illustration, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims (9)

1. The punching tooth main spindle box 7210 is matched with a spring-pressing device for controlling bearing gap, and comprises a box body (1) of the main spindle box, the lateral walls of the two transverse ends of the box body (1) are provided with opposite round holes (2), a matching bearing (3) is arranged in the round hole (2) at the left end, a radial positioning bearing is arranged in the round hole (2) at the right end, the matching bearing (3) comprises two matched bearings, the matching bearing (3) and the radial positioning bearing are sleeved with a main shaft (13) together, the left end of the main shaft (13) is provided with a punch disc (12), the punch disc (12) is provided with a punch, it is characterized in that a small elastic sleeve (4) which is propped against the right end surface of the matching bearing (3) is sleeved on the main shaft (13), the small elastic sleeve (4) is connected with a large elastic sleeve (5) which is sleeved on the main shaft (13) through an elastic piece, the main shaft (13) is in threaded fit with a round nut (6), and the round nut (6) abuts against the right side wall of the large elastic sleeve (5).

2. The punching main spindle box 7210 paired bearing gap control biasing device according to claim 1, wherein the upper portion of the box (1) is solid and the solid portion is provided with a through hole (7) penetrating from left to right, the 7210 paired bearing (3) is disposed at the left end of the through hole (7), and the radial positioning bearing is disposed at the right end of the through hole (7).

3. The punching main spindle box 7210 paired bearing clearance control biasing device according to claim 2, wherein a through sleeve (8) is disposed between the paired bearing (3) and the radial positioning bearing, the through sleeve (8) is in transition fit with the through hole (7), and an outer circular surface of the large spring sleeve (5) is in clearance fit with an inner wall of the through sleeve (8).

4. The punching main spindle box 7210 matched with the bearing clearance control biasing device according to claim 3, wherein a plurality of taper holes are formed in the outer circumferential surface of the through sleeve (8) at intervals, the box body (1) is provided with taper holes corresponding to the taper holes one by one, and the taper holes are connected with the taper holes through taper pins (9).

5. A striking gear spindle head 7210 paired with a bearing clearance control biasing device according to claim 3, wherein said elastic member is a compression spring (10).

6. The punching main spindle box 7210 matched with the spring pressing device for controlling the bearing clearance according to claim 5, wherein eight compression springs (10) are arranged at equal intervals between the large spring sleeve (5) and the small spring sleeve (4).

7. A punching head box 7210 matched with a bearing clearance control suppress device according to any one of claims 1 to 6, wherein the big spring sleeve (5) is in clearance fit with the main shaft (13).

8. The punching main spindle box 7210 of claim 1, wherein the number of the punching knives is 1 to 6.

9. A striking gear spindle box 7210 matched with a bearing clearance control striking device according to any one of claims 1 to 6, characterized in that a stop washer (11) matched with the round nut (6) is sleeved on the spindle (13).

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