Grinding wheel locking device of cutting machine

Abstract

The utility model provides a grinding wheel locking device of a cutting machine, and relates to the technical field of cutting machines. The locking device comprises a pressing assembly and an adjusting assembly, and the pressing assembly and the adjusting assembly are matched with each other to adjust the pressing degree of the grinding wheel. The pressing assembly comprises a flange plate and a gear. The adjusting assembly comprises a limiting knob, a knob and a screw rod; the gear is spirally mounted on the flange plate, the gear and the flange plate sleeve the screw rod, the knob is arranged at one end of the screw rod, and the limiting knob is movably arranged on the knob; in the first state, the limiting knob can be meshed with the gear; and in the second state, the limiting knob can be separated from the gear. The locking device can achieve the effects of fixed-torsion locking and looseness prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to a grinding wheel locking device for a cutting machine. Background Art

[0002] In the prior art, there are generally two solutions for the grinding wheel clamping device of the cutting machine, one is a hexagonal head bolt, and the other is a tool-free locking knob.

[0003] However, the grinding wheel clamping device of the prior art has many shortcomings, among which:

[0004] (1) Hexagon head bolts require the use of an auxiliary tool wrench to operate, the locking torque cannot be determined, and there is no anti-loosening function.

[0005] (2) The tool-free locking knob can be directly locked manually without the need for auxiliary tools. It can lock with a fixed torque, but it also has no anti-loosening function.

[0006] Therefore, it is urgent to design a grinding wheel locking device for a cutting machine to solve the above problems. Utility Model Content

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a grinding wheel locking device for a cutting machine.

[0008] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0009] According to one aspect of the present disclosure, a grinding wheel locking device for a cutting machine is provided, the locking device comprising a clamping assembly and an adjusting assembly, the clamping assembly and the adjusting assembly cooperate with each other to adjust the clamping degree of the grinding wheel;

[0010] The clamping assembly includes a flange and a gear;

[0011] The adjustment assembly includes a limit knob, a knob and a screw;

[0012] The gear is spirally mounted on the flange, the gear and the flange are sleeved on the screw, the knob is arranged at one end of the screw, and the limit torque is movably arranged on the knob;

[0013] In a first state, the limit torque can mesh with the gear; in a second state, the limit torque can be separated from the gear.

[0014] In an exemplary embodiment of the present disclosure, when the knob moves in a first direction toward the flange, the limit knob switches from the second state to the first state;

[0015] When the knob moves in the second direction away from the flange, the limiting knob switches from the first state to the second state.

[0016] In an exemplary embodiment of the present disclosure, a protrusion is provided on one side wall of the gear, and the gear is threadedly connected to the inner wall of the flange through the protrusion.

[0017] In an exemplary embodiment of the present disclosure, the clamping assembly further includes a spring pressing piece.

[0018] The spring pressing piece is located on a side of the flange close to the knob, and the spring pressing piece is connected to the flange by screws;

[0019] The gear is located between the flange and the spring pressing plate.

[0020] In an exemplary embodiment of the present disclosure, a threaded hole is provided on the flange, and the screw is threadedly connected to the flange through the threaded hole.

[0021] In an exemplary embodiment of the present disclosure, the clamping assembly further includes a clamping spring.

[0022] The retaining spring is sleeved on the screw rod, the retaining spring is arranged in the flange, and the retaining spring is located at a side of the gear away from the knob.

[0023] In an exemplary embodiment of the present disclosure, a groove is provided on the circumferential side wall of the knob, and the limiting torsion is movably arranged in the groove.

[0024] In an exemplary embodiment of the present disclosure, the limit torque comprises a housing and teeth.

[0025] The housing is movably disposed in the groove, and the teeth are clamped on the housing and connected to the housing by screws;

[0026] The teeth are capable of meshing with the gear.

[0027] In an exemplary embodiment of the present disclosure, clamping grooves are respectively provided on the side walls on both sides of the groove close to the screw rod, and the shell is clamped in the clamping grooves.

[0028] In an exemplary embodiment of the present disclosure, the adjustment assembly further includes a spring.

[0029] The spring is arranged in the knob, one end of the spring is connected to the limit twist, and the other end of the spring is connected to the inner wall of the knob.

[0030] The utility model has at least the following beneficial effects:

[0031] 1) The flange and the screw have threads with opposite spiral directions and different pitches. Through the meshing transmission of the limit torque and the gear, the knob is turned in the opposite direction. When the double threads rotate, the displacements generated by the different pitches are different. The relative position of the flange and the gear changes, and the flange presses the grinding wheel more tightly, achieving the anti-loosening effect of the locking device.

[0032] 2) When the knob rotates forward, the flange gradually approaches and presses the grinding wheel, and the limit torque gradually engages with the gear. When the knob is reversed, the grinding wheel is tightened and prevented from loosening through the meshing transmission of the limit torque and the gear. Continue to reverse the knob to increase the tightening force to the rated value, and the limit torque is separated from the gear again to achieve the effect of fixed torque locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0034] Figure 1 An exploded view of a grinding wheel locking device of a cutting machine in one embodiment of the present disclosure.

[0035] Description of reference numerals:

[0036] 1. retaining ring; 2. flange; 201. threaded hole; 3. gear; 4. spring pressure plate; 5. screw; 6. limit torque; 601. housing; 602. teeth; 7. spring; 8. knob; 9. screw; 10. protrusion; 11. groove; 1101. slot. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0038] The present disclosure provides a grinding wheel locking device for a cutting machine, see Figure 1The locking device includes a clamping assembly and an adjusting assembly, which cooperate with each other to adjust the clamping degree of the grinding wheel; the clamping assembly includes a flange 2 and a gear 3; the adjusting assembly includes a limit twist 6, a knob 8 and a screw 9; the gear 3 is spirally installed on the flange 2, the gear 3 and the flange 2 are sleeved on the screw 9, the knob 8 is arranged at one end of the screw 9, and the limit twist 6 is movably arranged on the knob 8; in the first state, the limit twist 6 can mesh with the gear 3; in the second state, the limit twist 6 can be separated from the gear 3.

[0039] In the embodiment of the present disclosure, the locking device is composed of a flange 2, a gear 3, a limit twist 6, a knob 8 and a screw 9. The limit twist 6 is installed on the knob 8, and the gear 3 is screwed on the flange 2 to form a flange assembly. The flange assembly is sleeved on the screw 9, and the flange assembly is installed in the knob 8. At this time, the limit twist 6 is in the second state, and the limit twist 6 is separated from the gear 3; the locking device is screwed on the grinding wheel mechanism of the cutting machine through the screw 9, and the knob 8 is continuously rotated so that the flange 2 abuts against the grinding wheel and locks the grinding wheel, thereby switching the limit twist 6 from the second state to the first state, and the limit twist 6 is meshed with the gear 3. The spiral direction of the screw 9 is aligned with the inner screw direction of the flange 2. The spiral directions of the threads are opposite, and the thread pitch of the screw rod 9 is different from that of the flange 2. When the flange 2 presses the grinding wheel, the knob 8 is rotated in the opposite direction, and the knob 8 moves away from the grinding wheel. The gear meshing transmission between the limit torque 6 and the gear 3 drives the gear 3 to rotate, so that the gear 3 moves axially in the flange 2, and the flange 2 moves toward the grinding wheel. When the double threads rotate, the displacements generated by the different pitches are different, so that the flange is pressed tighter, and then the anti-loosening effect is achieved; continue to rotate the knob 8 in the opposite direction, as the tightening force increases to the rated value, the limit torque 6 switches from the first state to the second state, and the limit torque 6 slips off the gear 3, thereby achieving the effect of fixed torque locking.

[0040] In one embodiment of the present disclosure, when the knob 8 moves in the first direction toward the direction close to the flange 2, the limit twist 6 switches from the second state to the first state; when the knob 8 moves in the second direction toward the direction away from the flange 2, the limit twist 6 switches from the first state to the second state. In this way, when the limit twist 6 moves in the axial direction toward the direction close to the flange 2, the limit twist 6 gradually meshes with the gear 3, and when the limit twist 6 moves in the axial direction away from the flange 2, the limit twist 6 gradually disengages from the gear 3, thereby adjusting the meshing state of the limit twist 6 and the gear 3, and facilitating the realization of the fixed torque locking and anti-loosening effect.

[0041] Optionally, the first direction is a direction approaching the flange 2 , and the second direction is a direction away from the flange 2 .

[0042] In one embodiment of the present disclosure, see Figure 1 A protrusion 10 is provided on one side wall of the gear 3, and the gear 3 is threadedly connected to the inner wall of the flange 2 through the protrusion 10. In this way, the gear 3 is conveniently screwed to the flange 2, and the gear meshing transmission between the gear 3 and the limit torque 6 is realized to adjust the position of the flange 2, so as to achieve the effect of pressing the flange 2 tighter.

[0043] In one embodiment of the present disclosure, see Figure 1 The clamping assembly further includes a spring pressing piece 4, which is located on the side of the flange 2 close to the knob 8, and the gear 3 is located between the flange 2 and the spring pressing piece 4. In this way, it is convenient to limit the gear 3 and prevent the gear 3 from separating from the flange 2.

[0044] Alternatively, see Figure 1 The spring pressing piece 4 is connected to the flange 2 by screws 5. In this way, the spring pressing piece 4 and the flange 2 are easy to disassemble and assemble, and the spring pressing piece 4 can be quickly replaced.

[0045] Alternatively, see Figure 1 The flange 2 is provided with a threaded hole 201, and the screw 5 is threadedly connected with the flange 2 through the threaded hole 201. In this way, the flange 2 and the screw 5 are conveniently connected, and the flange 2 and the screw 5 are conveniently disassembled and assembled.

[0046] In one example, see Figure 1 The number of the spring pressing plates 4 , the screws 5 and the threaded holes 201 are all two, and the two spring pressing plates 4 , the screws 5 and the threaded holes 201 are all symmetrically arranged, and the gear 3 is located between the two spring pressing plates 4 .

[0047] In one embodiment of the present disclosure, see Figure 1 The clamping assembly further includes a circlip 1, which is sleeved on the screw 9, disposed in the flange 2, and located on the side of the gear 3 away from the knob 8. In this way, the gear 3 is limited by the circlip 1 to prevent the gear 3 from moving away from the knob 8 during rotation, thereby improving the effect of fixed torque locking.

[0048] It is understandable that when assembling the locking device, after the spirally assembled flange 2 and gear 3 are installed into the knob 8 , the retaining ring 1 is finally installed into the side of the flange 2 away from the gear 3 .

[0049] In one embodiment of the present disclosure, see Figure 1 A groove 11 is provided on the circumferential side wall of the knob 8, and the limit twist 6 is movably arranged in the groove 11. In this way, it is convenient to assemble the limit twist 6 on the knob 8, and realize the rapid assembly of the locking device.

[0050] In one embodiment of the present disclosure, see Figure 1The limit knob 6 includes a housing 601 and teeth 602. The housing 601 is movably disposed in the groove 11. The teeth 602 are clamped on the housing 601 and connected to the housing 601 by screws 5. The teeth 602 can mesh with the gear 3. In this way, the limit knob 6 is composed of the housing 601 and the teeth 602. Through the meshing transmission between the teeth 602 and the gear 3, the knob 8 is rotated in the opposite direction to drive the gear 3 to rotate.

[0051] It can be understood that the tooth 602 is arranged to extend axially along the screw rod 9, and the tooth 602 follows the knob 8 to move in the first direction or the second direction, so that the tooth 602 enters or exits between the teeth of the gear 3, thereby achieving the engagement or separation of the tooth 602 with the gear 3, and then achieving the switching of the tooth 602 from the second state to the first state, or from the first state to the second state.

[0052] Optionally, the teeth 602 are detachably connected to the housing 601, and the limiting twist 6 is easy to assemble.

[0053] Alternatively, see Figure 1 , the side walls of both sides of the groove 11 close to the screw rod 9 are respectively provided with card slots 1101, and the housing 601 is carded in the card slots 1101. In this way, the convenient assembly of the limit twist 6 and the knob 8 can be achieved.

[0054] It can be understood that when the limit twist 6 is assembled, the teeth 602 are clamped on the shell 601, and then the teeth 602 are fixedly connected to the shell 601 by the screws 5, and the assembled limit twist 6 is inserted into the groove 11 from under the knob 8, and the two side walls of the shell 601 are clamped into the two slots 1101 to complete the assembly of the limit twist 6 and the knob 8. The limit twist 6 can move radially in the knob 8, and the limit twist 6 is easy to assemble and firmly installed.

[0055] In one embodiment of the present disclosure, see Figure 1 The adjustment assembly further includes a spring 7, which is disposed in the knob 8, one end of the spring 7 is connected to the limit twist 6, and the other end of the spring 7 is connected to the inner wall of the knob 8. In this way, the limit twist 6 is pre-tightened by the spring 7, so as to improve the stability of the installation of the limit twist 6, and further improve the stability of the engagement between the limit twist 6 and the gear 3.

[0056] It can be understood that the spring 7 squeezes the limit twist 6 to abut against the slot 1101, and the limit twist 6 can be easily removed by manually pressing the limit twist 6.

[0057] Optionally, the spring 7 is located on a side of the spring pressing sheet 4 close to the knob 8 , and the spring pressing sheet 4 limits the spring 7 to prevent the spring 7 from being misplaced during the movement of the knob 8 .

[0058] In one example, see Figure 1The number of limit twists 6 and springs 7 are both two, and the two limit twists 6 and springs 7 are symmetrically arranged, and the limit twists 6 and springs 7 are installed on the two side walls of the knob 8.

[0059] In one embodiment of the present disclosure, after the locking device locks the grinding wheel of the cutting machine, when the cutting machine is working, the gear 3 rotates forward following the grinding wheel, and when the cutting machine is running in the reverse direction, the gear 3 does not rotate.

[0060] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A grinding wheel locking device for a cutting machine, characterized in that: The locking device comprises a clamping assembly and an adjusting assembly, and the clamping assembly and the adjusting assembly cooperate with each other to adjust the clamping degree of the grinding wheel; The clamping assembly comprises a flange (2) and a gear (3); The adjustment assembly comprises a limit knob (6), a knob (8) and a screw rod (9); The gear (3) is screw-mounted on the flange (2), the gear (3) and the flange (2) are sleeved on the screw (9), the knob (8) is disposed at one end of the screw (9), and the limit knob (6) is movably disposed on the knob (8); In a first state, the limit torque (6) can mesh with the gear (3); in a second state, the limit torque (6) can be separated from the gear (3).

2. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: When the knob (8) moves in a first direction toward the flange (2), the limit knob (6) switches from the second state to the first state; When the knob (8) moves in the second direction away from the flange (2), the limiting knob (6) switches from the first state to the second state.

3. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: A protrusion (10) is provided on one side wall of the gear (3), and the gear (3) is threadedly connected to the inner wall of the flange (2) via the protrusion (10).

4. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: The clamping assembly further comprises a spring pressing piece (4), The spring pressing piece (4) is located on a side of the flange (2) close to the knob (8), and the spring pressing piece (4) and the flange (2) are connected via screws (5); The gear (3) is located between the flange (2) and the spring pressure plate (4).

5. The grinding wheel locking device for a cutting machine according to claim 4, characterized in that: The flange (2) is provided with a threaded hole (201), and the screw (5) is threadedly connected to the flange (2) through the threaded hole (201).

6. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: The clamping assembly further comprises a clamping spring (1), The retaining spring (1) is sleeved on the screw rod (9), the retaining spring (1) is arranged in the flange (2), and the retaining spring (1) is located on a side of the gear (3) away from the knob (8).

7. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: A groove (11) is provided on the circumferential side wall of the knob (8), and the limit knob (6) is movably arranged in the groove (11).

8. The grinding wheel locking device for a cutting machine according to claim 7, characterized in that: The limit torque (6) comprises a housing (601) and teeth (602). The housing (601) is movably disposed in the groove (11); the teeth (602) are mounted on the housing (601) and connected to the housing (601) via screws (5); The teeth (602) are capable of meshing with the gear (3).

9. The grinding wheel locking device for a cutting machine according to claim 8, characterized in that: Slots (1101) are respectively provided on the side walls of both sides of the groove (11) close to the screw rod (9), and the housing (601) is mounted in the slots (1101).

10. The grinding wheel locking device for a cutting machine according to claim 1, characterized in that: The adjustment assembly further comprises a spring (7), The spring (7) is arranged in the knob (8), one end of the spring (7) is connected to the limit knob (6), and the other end of the spring (7) is connected to the inner wall of the knob (8).

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