CN113333802A

CN113333802A - Cam tensioning structure

Info

Publication number: CN113333802A
Application number: CN202110701894.7A
Authority: CN
Inventors: 宋秋构
Original assignee: Suzhou Ksc Precise Machinery Co ltd
Current assignee: Suzhou Ksc Precise Machinery Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-09-03
Anticipated expiration: 2041-06-24
Also published as: CN113333802B

Abstract

The invention relates to the technical field of cam tensioning, and discloses a wheel tensioning structure which comprises an installation seat, wherein a moving groove is formed in the installation seat, a pull rod is movably connected in the moving groove, one end of the pull rod is fixedly connected with a loop bar, one end of the loop bar is fixedly connected with a guide head, a first installation groove is formed in the installation seat, a gear shaft is movably connected in the first installation groove, a cam is fixedly connected to one side of the gear shaft, a square hole is formed in the pull rod, and the square hole is communicated with the first installation groove. The hexagonal cone sleeve fixing device not only can fix the hexagonal cone sleeve through the anti-slip head and improve the stability of the device, but also can enable the hexagonal cone seat to be tightly attached to the hexagonal cone sleeve through the matching use of the hexagonal insertion hole and the hexagonal surface, so that the using effect of the device is improved, and the rotating angle of the gear shaft can be fixed through the matching use of the insertion block and the insertion slot, so that the fixing effect of the device is improved.

Description

Cam tensioning structure

Technical Field

The invention relates to the technical field of cam tensioning, in particular to a cam tensioning structure.

Background

The numerical control machining is a technological method for machining parts on a numerical control machine tool, solves the problems of variable part varieties, small batch size, complex shape, high precision and the like, and is an effective way for realizing high-efficiency and automatic machining, and a cutter is usually required to be fixed in the numerical control machining process.

The numerical control machining technology is a high-precision machining technology, such as a lathe milling machine and the like, a machining tool used in numerical control machining is a cutter, the cutter is usually fixed on a cutter seat and then can machine a workpiece, the cutter is usually fixed on the cutter seat in a thread clamping and fixing mode in the market at present, and the cutter is easily and unstably clamped by the thread clamping and fixing due to the fact that vibration is generated when a machine tool is used for machining, so that the cutter is damaged, and therefore the cam tensioning structure is very necessary.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a cam tensioning structure, which mainly solves the problems that a machine tool can vibrate during machining, and a cutter is easy to be unstably clamped due to the fact that threads are clamped and fixed, so that the cutter is damaged.

(II) technical scheme

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

a cam tensioning structure comprises an installation seat, wherein a moving groove is formed in the installation seat, a pull rod is movably connected in the moving groove, one end of the pull rod is fixedly connected with a loop bar, one end of the loop bar is fixedly connected with a guide head, a first installation groove is formed in the installation seat, a gear shaft is movably connected in the first installation groove, one side of the gear shaft is fixedly connected with a cam, a square hole is formed in the pull rod and communicated with the first installation groove, the square hole is inserted into the cam, a plurality of expansion tensioners are sleeved on one side of the loop bar, anti-slip heads are fixedly connected on one sides of the expansion tensioners, an annular groove is formed in the upper surface of each expansion tensioner, a second O-shaped ring is fixedly connected in the annular groove, a hexagonal cone seat is fixedly connected in the installation seat, a hexagonal insertion hole is formed in the hexagonal cone seat, and a hexagonal cone sleeve is inserted in the hexagonal insertion hole, and the hexagonal cone sleeve contacts with the anti-slip head, the inside of mount pad is equipped with the fender ring, and the second mounting groove has been seted up to fender ring one side, and swing joint has the knob in the second mounting groove, and the one end fixedly connected with fluted disc of knob, and fluted disc and gear shaft mesh.

Furthermore, one side of the expansion tensioner is sleeved with a butterfly spring fixing plate, and the outer circumferential wall of the butterfly spring fixing plate is sleeved with a spring ring.

On the basis of the scheme, one side of the expansion tensioner is movably connected with a corrugated butterfly spring, and two ends of the corrugated butterfly spring are respectively contacted with the pull rod and the butterfly spring fixing plate.

As a further scheme of the invention, one end of the pull rod is fixedly connected with a buffer spring, and the buffer spring is fixed with the mounting seat.

Furthermore, the outer wall of one side of the hexagonal cone sleeve is provided with a hexagonal surface in an open view, and the hexagonal cone sleeve is internally provided with a tensioning hole.

On the basis of the scheme, one side of the pull rod is fixedly connected with a first O-shaped ring, and the top of the mounting seat is provided with a mounting hole.

The invention further discloses a gear shaft mounting device, which comprises a slot, wherein the slot is formed in the top of a gear shaft, a connecting rod is movably connected inside a mounting seat, an insertion block is fixedly connected to the bottom end of the connecting rod and is inserted into the slot, a second spring is fixedly connected to the top end of the connecting rod, and two ends of the second spring are respectively fixed to the mounting seat and the connecting rod.

Further, the second has been seted up to the inside of mount pad and has been kept away a groove, and the second is kept away a inslot swing joint and has the arm of force, the first groove of keeping away has been seted up to the inside of connecting rod, and first groove and the arm of force sliding connection of keeping away, the inside swing joint of mount pad has the slide bar, and the slide bar contacts with the arm of force, one side swing joint of slide bar has first spring, and the both ends of first spring are fixed mutually with slide bar and mount pad respectively, mount pad and fixedly connected with rubber pad are passed on the top of slide bar.

(III) advantageous effects

Compared with the prior art, the invention provides a cam tensioning structure, which has the following beneficial effects:

1. through the setting of installation anti-skidding head on the expansion strainer, rotate the knob and make the fluted disc drive the gear shaft and rotate to make cam promotion pull rod move right, and then make the loop bar drive anti-skidding head on the expansion strainer and move right and suitably plug up the hexagonal cone sleeve, and then make the more firm of device, avoid conventional screw thread centre gripping fixed make the unstable cutter of cutter centre gripping cause the cutter to damage easily, improved the steadiness of device.

2. Through the arrangement of the guide head arranged on the loop bar, the guide head can guide the loop bar, so that the loop bar can accurately enter the hexagonal cone sleeve, the problem that the dislocation is easy to cause and inconvenient to install between the loop bar and the hexagonal cone sleeve is avoided, and the guide effect of the device is improved.

3. The hexagonal socket and the hexagonal surface are matched, so that the hexagonal cone seat and the hexagonal cone sleeve can be tightly contacted and attached, the hexagonal cone sleeve is prevented from sliding in the hexagonal cone seat, and the using effect of the device is improved.

4. Through the setting of installing the fender ring on the mount pad, keep off the ring and can restrict the position of fluted disc, make the rotation that the fluted disc can be stable, avoid the fluted disc to shift out the mount pad and influence the result of use of device, improved the restriction of device.

5. The gear shaft is matched with the insertion block and the insertion groove, when the gear shaft rotates to a proper angle, the insertion groove is located above the insertion block, the second spring rebounds and extends to enable the connecting rod to drive the insertion block to move downwards and to be inserted into the insertion groove, so that the rotating angle of the gear shaft is fixed, the device is fixed more firmly, and the fixing effect of the device is improved.

Drawings

Fig. 1 is a schematic perspective view of an embodiment 1 of a cam tensioning structure according to the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment 1 of a cam tightening structure according to the present invention;

FIG. 3 is an exploded view of embodiment 1 of a cam tightening structure according to the present invention;

FIG. 4 is a schematic perspective view of embodiment 2 of a cam tensioning structure according to the present invention;

fig. 5 is a schematic cross-sectional structural view of embodiment 2 of a cam tensioning structure according to the present invention.

In the figure: 1. a mounting seat; 2. a knob; 3. a hexagonal cone base; 4. a hexagonal cone sleeve; 5. mounting holes; 6. a gear shaft; 7. a buffer spring; 8. a moving groove; 9. a pull rod; 10. a first O-ring; 11. a second O-ring; 12. an expansion tensioner; 13. a corrugated butterfly spring; 14. a spring ring; 15. a butterfly spring fixing plate; 16. a first mounting groove; 17. a baffle ring; 18. a cam; 19. a fluted disc; 20. a second mounting groove; 21. a ring groove; 22. an anti-slip head; 23. a hexagonal jack; 24. tightening the hole; 25. a hexagonal surface; 26. a guide head; 27. a loop bar; 28. a square hole; 29. a slide bar; 30. a first avoiding groove; 31. a slot; 32. inserting a block; 33. a second avoiding groove; 34. a force arm; 35. a first spring; 36. a rubber pad; 37. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, a cam tensioning structure comprises an installation base 1, a movable groove 8 is formed in the installation base 1, a pull rod 9 is slidably connected in the movable groove 8, a loop bar 27 is fixed at one end of the pull rod 9 through a bolt, a guide head 26 is fixed at one end of the loop bar 27 through a bolt, the guide head 26 can guide the loop bar 27 to enable the loop bar 27 to accurately move, the loop bar 27 is prevented from being easily dislocated and inconvenient to install in the moving and connecting process, a first installation groove 16 is formed in the installation base 1, a gear shaft 6 is inserted into the first installation groove 16, a cam 18 is fixed at one side of the gear shaft 6 through a bolt, a square hole 28 is formed in the pull rod 9, the square hole 28 is communicated with the first installation groove 16, the square hole 28 is inserted into the cam 18, a plurality of expansion tensioners 12 are sleeved at one side of the loop bar 27, an anti-slip head 22 is welded at one side of the expansion tensioners 12, the upper surface of the expansion tensioner 12 is provided with a ring groove 21, a second O-shaped ring 11 is bonded in the ring groove 21, a hexagonal cone base 3 is fixed in the mounting base 1 through bolts, a hexagonal jack 23 is formed in the hexagonal cone base 3, a hexagonal cone sleeve 4 is inserted in the hexagonal jack 23, the gear shaft 6 is driven to rotate by the fluted disc 19 by rotating the knob 2, so that the cam 18 pushes the pull rod 9 to move rightwards, the loop rod 27 drives the anti-slip head 22 on the expansion tensioner 12 to move rightwards to properly block the hexagonal cone sleeve 4, the device is more stable, cutter damage caused by unstable cutter clamping due to conventional thread clamping is avoided, the hexagonal cone sleeve 4 is in contact with the anti-slip head 22, the retaining ring 17 is arranged in the mounting base 1, a second mounting groove 20 is formed in one side of the retaining ring 17, the knob 2 is inserted in the second mounting groove 20, and the fluted disc 19 is fixed at one end of the knob 2 through bolts, and fluted disc 19 and gear shaft 6 mesh mutually, and ring 17 can restrict the position of fluted disc 19, makes fluted disc 19 can rotate steadily, avoids fluted disc 19 to shift out the result of use that the mount pad 1 influences the device.

It should be noted that one side of the expansion tensioner 12 is sleeved with a butterfly spring fixing plate 15, the circumferential outer wall of the butterfly spring fixing plate 15 is sleeved with a spring ring 14, one side of the expansion tensioner 12 is sleeved with a corrugated butterfly spring 13, and both ends of the corrugated butterfly spring 13 are respectively contacted with the pull rod 9 and the butterfly spring fixing plate 15, one end of the pull rod 9 is fixed with a buffer spring 7 through a bolt, and buffer spring 7 is fixed mutually with mount pad 1, one side outer wall of hexagonal cone sleeve 4 is opened sight and is equipped with hexagonal 25, hexagonal jack 23 is used with the cooperation of hexagonal 25, make can the in close contact with the laminating between hexagonal cone seat 3 and the hexagonal cone sleeve 4, avoid hexagonal cone sleeve 4 to produce in hexagonal cone seat 3 and slide, tensioning hole 24 has been seted up to hexagonal cone sleeve 4's inside, one side of pull rod 9 bonds and has first O type circle 10, mounting hole 5 has been seted up at the top of mount pad 1.

The working principle of the embodiment is as follows: when the cutter needs to be fixed, the cutter is firstly fixed on the hexagonal cone sleeve 4, then the knob 2 is rotated, the fluted disc 19 drives the gear shaft 6 to rotate, so that the cam 18 pushes the pull rod 9 to move rightwards, the buffer spring 7 extends, and the loop bar 27 drives the anti-slip head 22 on the expansion tensioner 12 to move rightwards to appropriately block the hexagonal cone sleeve 4, and the corrugated butterfly spring 13 contracts, so that the device is more stable, the hexagonal jack 23 and the hexagonal face 25 are matched for use, so that the hexagonal cone seat 3 and the hexagonal cone sleeve 4 are tightly contacted and attached, the hexagonal cone sleeve 4 is prevented from sliding in the hexagonal cone seat 3, the loop bar 27 is guided by the guide head 26, the loop bar accurately enters the hexagonal cone sleeve 4, and the problem that the hexagonal dislocation installation is easily caused between the loop bar 27 and the hexagonal cone sleeve 4 is avoided.

Example 2

Referring to fig. 4-5, a cam tensioning structure, including slot 31, slot 31 is seted up at the top of gear shaft 6, the inside of mount pad 1 is pegged graft and is had the connecting rod, there is inserted block 32 bottom of connecting rod through the bolt fastening, and inserted block 32 pegs graft mutually with slot 31, there is second spring 37 on the top of connecting rod through the bolt fastening, and the both ends of second spring 37 are fixed mutually with mount pad 1 and connecting rod respectively, when gear shaft 6 rotated to suitable angle, slot 31 is located the top of inserted block 32, the second spring 37 resilience extension makes the connecting rod drive inserted block 32 move down and insert in slot 31 this moment, thereby fix the pivoted angle of gear shaft 6, and then make the device fixed more firm.

Particularly, in the invention, a second avoiding groove 33 is formed in the mounting base 1, a force arm 34 is rotatably connected in the second avoiding groove 33, a first avoiding groove 30 is formed in the connecting rod, the first avoiding groove 30 is slidably connected with the force arm 34, a sliding rod 29 is inserted in the mounting base 1, the sliding rod 29 is in contact with the force arm 34, a first spring 35 is sleeved on one side of the sliding rod 29, two ends of the first spring 35 are respectively fixed with the sliding rod 29 and the mounting base 1, the top end of the sliding rod 29 penetrates through the mounting base 1 and is bonded with a rubber pad 36, when the fixing is not required, the rubber pad 36 is pressed downwards, one end of the pushing force arm 34 of the sliding rod 29 moves downwards, the first spring 35 contracts, so that the other end of the force arm 34 moves upwards and pushes the connecting rod to move upwards, and the second spring 37 contracts, so that the inserting block 32 leaves the inserting groove 31.

The working principle of the embodiment is as follows: when the cutter needs to be further fixed, the gear shaft 6 rotates to a proper angle to enable the slot 31 to be located above the inserting block 32, at the moment, the second spring 37 rebounds and extends to enable the connecting rod to drive the inserting block 32 to move downwards and be inserted into the slot 31, so that the rotating angle of the gear shaft 6 is fixed, the device is further fixed more firmly, when the fixing is not needed, the rubber pad 36 is pressed downwards, one end of the sliding rod 29 pushing force arm 34 moves downwards, the first spring 35 contracts, the other end of the force arm 34 moves upwards and pushes the connecting rod to move upwards, the second spring 37 contracts, and the inserting block 32 is enabled to leave the slot 31.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct or indirect via an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A cam tensioning structure comprises a mounting seat (1), and is characterized in that a movable groove (8) is formed in the mounting seat (1), a pull rod (9) is movably connected in the movable groove (8), a loop bar (27) is fixedly connected to one end of the pull rod (9), a guide head (26) is fixedly connected to one end of the loop bar (27), a first mounting groove (16) is formed in the mounting seat (1), a gear shaft (6) is movably connected in the first mounting groove (16), a cam (18) is fixedly connected to one side of the gear shaft (6), a square hole (28) is formed in the pull rod (9), the square hole (28) is communicated with the first mounting groove (16), the square hole (28) is connected with the cam (18) in an inserting manner, a plurality of expansion tensioners (12) are sleeved on one side of the loop bar (27), and an anti-slip head (22) is fixedly connected to one side of the expansion tensioners (12), annular (21) have been seted up to the upper surface of inflation strainer (12), fixedly connected with second O type circle (11) in annular (21), inside fixedly connected with hexagonal cone seat (3) of mount pad (1), hexagonal jack (23) have been seted up to the inside of hexagonal cone seat (3), and it has hexagonal cone sleeve (4) to peg graft in hexagonal jack (23), and hexagonal cone sleeve (4) contact with antiskid head (22), the inside of mount pad (1) is equipped with fender ring (17), and second mounting groove (20) have been seted up to fender ring (17) one side, and swing joint has knob (2) in second mounting groove (20), and the one end fixedly connected with fluted disc (19) of knob (2), and fluted disc (19) mesh mutually with gear shaft (6).

2. The cam tensioning structure according to claim 1, characterized in that a butterfly spring fixing plate (15) is sleeved on one side of the expansion tensioner (12), and a spring ring (14) is sleeved on the peripheral outer wall of the butterfly spring fixing plate (15).

3. A cam tensioning arrangement according to claim 2, characterized in that a corrugated butterfly spring (13) is movably connected to one side of the expansion tensioner (12), and both ends of the corrugated butterfly spring (13) are respectively in contact with the pull rod (9) and the butterfly spring fixing plate (15).

4. A cam tensioning arrangement according to claim 3, characterized in that a buffer spring (7) is fixedly connected to one end of the pull rod (9), and the buffer spring (7) is fixed to the mounting base (1).

5. The cam tensioning structure according to claim 4, characterized in that a hexagonal surface (25) is arranged on the outer wall of one side of the hexagonal cone sleeve (4) in an open view, and a tensioning hole (24) is arranged in the hexagonal cone sleeve (4).

6. The cam tensioning structure according to claim 4, wherein a first O-ring (10) is fixedly connected to one side of the pull rod (9), and a mounting hole (5) is formed in the top of the mounting seat (1).

7. A cam tensioning structure according to claim 4, comprising a slot (31), wherein the slot (31) is formed in the top of the gear shaft (6), a connecting rod is movably connected to the inside of the mounting seat (1), an insertion block (32) is fixedly connected to the bottom end of the connecting rod, the insertion block (32) is inserted into the slot (31), a second spring (37) is fixedly connected to the top end of the connecting rod, and two ends of the second spring (37) are respectively fixed to the mounting seat (1) and the connecting rod.

8. The cam tensioning structure according to claim 7, wherein a second avoiding groove (33) is formed in the mounting seat (1), a force arm (34) is movably connected in the second avoiding groove (33), a first avoiding groove (30) is formed in the connecting rod, the first avoiding groove (30) is slidably connected with the force arm (34), a sliding rod (29) is movably connected in the mounting seat (1), the sliding rod (29) is in contact with the force arm (34), a first spring (35) is movably connected to one side of the sliding rod (29), two ends of the first spring (35) are respectively fixed with the sliding rod (29) and the mounting seat (1), and the top end of the sliding rod (29) penetrates through the mounting seat (1) and is fixedly connected with a rubber pad (36).