CN217412716U - Floating type thread returning device - Google Patents
Floating type thread returning device Download PDFInfo
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- CN217412716U CN217412716U CN202221353147.5U CN202221353147U CN217412716U CN 217412716 U CN217412716 U CN 217412716U CN 202221353147 U CN202221353147 U CN 202221353147U CN 217412716 U CN217412716 U CN 217412716U
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- counter bore
- floating
- sleeve
- inner sleeve
- chuck
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- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a floating screw thread returns tooth device, including the chuck of screw tap and fixed screw tap afterbody, still include lower extreme open-ended inner skleeve and lower extreme open-ended outer sleeve, the inner skleeve upper end is inside outer sleeve along the axial sliding connection, the roof of inner skleeve passes through axial resilient means elastic connection with the roof of outer sleeve, the chuck inserts in the inner skleeve, be equipped with a plurality of side floating devices along the axial arrangement on the inner skleeve, side floating device includes a plurality of side spigots along circumference equipartition, side spigots along radial sliding connection on the lateral wall of inner skleeve, the side of chuck is opened has the location counter bore that holds side spigots one end male, side floating device still includes the side pressure spring that compresses tightly in the side spigots axial location counter bore, through the axial resilient means and the side floating device that set up, has realized the axial and radial of chuck and has floated, the thread returning process can be buffered to a certain extent, and the damage to the thread caused by the rigid contact of the screw tap in the thread returning process is avoided.
Description
Technical Field
The utility model relates to a fastener processing field especially involves the screw thread processing field, specifically indicates a floating screw thread returns tooth device.
Background
In the processing field of fastener, the internal thread is very common processing technology, the tapping processing is all adopted to current internal thread, need carry out the internal thread quality inspection after processing is accomplished, need reprocess to the unqualified product of screw thread quality, the most common quality problems are that the screw depth of screw hole is not enough, need go back the tooth operation, because it is fast to return the tooth operation comparison tapping operation process velocity of speed, the main shaft rotational speed of screw tap is also fast, workman's process velocity is also very fast, consequently damage the screw thread at screw tap and screw hole alignment in-process and back the tooth in-process easily.
Disclosure of Invention
The utility model discloses to prior art's not enough, provide a simple structure, safe and reliable, convenient operation's floating screw thread returns tooth device.
The utility model discloses a following technical scheme realizes, provides a floating screw thread returns tooth device, including the chuck of screw tap and fixed screw tap afterbody, still include lower extreme open-ended inner skleeve and lower extreme open-ended outer sleeve, the inner skleeve upper end is inside the outer sleeve along the axial slip, the roof of inner skleeve passes through axial resilient means elastic connection with the roof of outer sleeve, the chuck inserts inside the inner skleeve, be equipped with a plurality of side floating devices of arranging along the axial on the inner skleeve, side floating device includes a plurality of side spigots along the circumference equipartition, the side spigots is along radially sliding on the lateral wall of inner skleeve, open the side of chuck has the side spigots one end male location counter bore of appearance, side floating device still includes the side pressure spring that compresses tightly in the side spigots axial location counter bore.
The side pressure spring in the scheme compresses the side insertion into the axial positioning counter bore, so that the chuck can have certain elastic floating along the radial direction, the chuck is fixed and floats in the inner sleeve in the radial direction through a plurality of side floating devices, the top plate of the inner sleeve is elastically connected with the top plate of the outer sleeve through the axial elastic device, and the inner sleeve floats in the axial direction elastically, so that the chuck floats in the radial direction and the axial direction, the floating amount is small, and the rotation requirement of tooth returning can be met.
Preferably, the axial elastic device comprises a plurality of upper connecting bolts arranged along the circumferential direction, the upper connecting bolts penetrate through the top plate of the outer sleeve and then are in threaded connection with the top plate of the inner sleeve, and upper pressure springs located between the top plate of the inner sleeve and the top plate of the outer sleeve are sleeved on the upper connecting bolts. Go up pressure spring and promote the outside elasticity of inner skleeve roof and outer sleeve roof in this scheme to realize spacingly through last connecting bolt, thereby realized elastic connection.
Preferably, a bolt head counter bore for accommodating the bolt head of the upper connecting bolt is formed in the upper end face of the outer sleeve top plate, and the depth of the bolt head counter bore is 1.5-2.5 times of the height of the bolt head of the upper connecting bolt. According to the scheme, the depth of the counter bore of the bolt head is 1.5-2.5 times of the height of the bolt head of the upper connecting bolt, so that the bolt head can axially move for a certain distance in the counter bore of the bolt head, and elastic floating is achieved.
Preferably, the positioning counter bore is a spherical hole, and one end of the side insert shaft inserted into the spherical hole is a spherical surface. The positioning counter bore in this scheme is spherical hole, and the sphere of side jackshaft tip inserts in the spherical hole to when making chuck axis and inner skleeve axis have certain contained angle that deflects, the sphere still can laminate at spherical downthehole.
Preferably, the side floating device further comprises a fixed sleeve fixedly connected to the outer ring of the inner sleeve, the outer end of the side inserting shaft is provided with a spring counter bore, a pressing block is connected in the spring counter bore in a sliding mode, the side pressing spring is arranged between the pressing block and the spring counter bore, and a side pressing bolt for pressing the pressing block towards the inner portion of the spring counter bore is connected to the fixed sleeve in a threaded mode. Lateral pressure bolt threaded connection sheathes in the fixed to realize compressing tightly of spring through the compact heap.
Preferably, the inner ring of the fixed sleeve is connected with the outer ring of the inner sleeve through threads. Fixed cover inner circle passes through the screw thread and is connected with the inner skleeve outer lane in this scheme, the dismouting of fixed cover of being convenient for.
And optimally, a pressing block counter bore for inserting the side pressing bolt is formed in the pressing block. Open on the compact heap in this scheme and have the compact heap counter bore of holding side pressure bolt male, prevent that fixed cover is rotatory in the course of the work.
The utility model has the advantages that: the utility model discloses a floating screw thread returns tooth device, axial resilient means and the side floating device through the setting have realized that the axial of chuck and radial float, make it can have certain buffering at the in-process of returning the tooth to avoid returning tooth in-process screw tap rigid contact to damage the screw thread.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
figure 3 is a cross-sectional view of the inner sleeve of the present invention;
fig. 4 is a cross-sectional view of the outer sleeve of the present invention;
FIG. 5 is a cross-sectional view of the side insert shaft of the present invention;
shown in the figure:
1. the device comprises an inner sleeve, 2, an outer sleeve, 3, an upper connecting bolt, 4, an upper pressing spring, 5, a bolt head counter bore, 6, a fixing sleeve, 7, a side inserting shaft, 8, a pressing block, 9, a side pressing spring, 10, a side pressing bolt, 11, a chuck, 12 and a screw tap.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in figures 1-5, the utility model discloses a floating screw thread returns tooth device, including the chuck 11 of screw tap 12 and fixed screw tap 12 afterbody, chuck 11 is a cylindric anchor clamps that is used for confining the drill bit, is the accessory that the lathe is commonly used.
The inner sleeve 1 comprises a circular sleeve and a top plate fixed at the top, the outer sleeve 2 also comprises a circular sleeve and a top plate fixed at the top, the inner diameter of the outer sleeve 2 is equal to the outer diameter of the inner sleeve 1, and the upper end of the inner sleeve 1 is inserted into the outer sleeve 2, so that the upper end of the inner sleeve 1 is axially and slidably connected inside the outer sleeve 2.
The top plate of the inner sleeve 1 is elastically connected with the top plate of the outer sleeve 2 through an axial elastic device, the axial elastic device comprises a plurality of upper connecting bolts 3 arranged along the circumferential direction, the upper connecting bolts 3 penetrate through the top plate of the outer sleeve 2 and then are in threaded connection with the top plate of the inner sleeve 1, and the upper connecting bolts 3 are sleeved with upper pressure springs 4 positioned between the top plate of the inner sleeve 1 and the top plate of the outer sleeve 2, so that the upper connecting bolts 3 are fixedly connected with the top plate of the inner sleeve 1 and can axially slide relative to the outer sleeve 2.
The upper end face of the top plate of the outer sleeve 2 is provided with a bolt head counter bore 5 for accommodating the bolt head of the upper connecting bolt 3, the depth of the bolt head counter bore 5 is 1.5-2.5 times of the height of the bolt head of the upper connecting bolt 3, and the bolt head of the upper connecting bolt 3 can move axially conveniently.
Inside chuck 11 inserted inner skleeve 1, and chuck 11 and inner skleeve 1 are concentric, the side floating device that is equipped with a plurality of edges axial arrangement on the inner skleeve 1, side floating device in this embodiment is provided with three and follows the axial equipartition.
The side floating device comprises a plurality of side inserting shafts 7 which are uniformly distributed along the circumferential direction, the number of the side inserting shafts 7 is larger than 6, so that the circumferential floating effect is achieved, the side inserting shafts 7 are connected to the side wall of the inner sleeve 1 in a sliding mode along the radial direction, a positioning counter bore which can allow one end of each side inserting shaft 7 to be inserted is formed in the side face of the chuck 11, each positioning counter bore is a spherical hole, one end, inserted into the spherical hole, of each side inserting shaft 7 is a spherical surface, the spherical hole is attached to the spherical surface, when the screw tap 12 is clamped, the spherical surface of each side inserting shaft 7 can overcome the elastic force of a spring to be separated from the spherical hole, and therefore a certain protection effect is achieved on the screw tap 12 and a workpiece.
As shown in fig. 2, the side floating device further includes a side pressure spring 9 for pressing the side insert shaft 7 into the positioning counter bore. The outer end of the side inserting shaft 7 is provided with a spring counter bore, a pressing block 8 is connected in the spring counter bore in a sliding mode, a side pressure spring 9 is arranged between the pressing block 8 and the spring counter bore, the side floating device further comprises a fixing sleeve 6 fixedly connected to the outer ring of the inner sleeve 1, and the inner ring of the fixing sleeve 6 is connected with the outer ring of the inner sleeve 1 through threads.
The fixed sleeve 6 is in threaded connection with a side pressure bolt 10 for pressing the pressing block 8 towards the inside of the spring counter bore, and the pressing block 8 is provided with a pressing block counter bore for inserting the side pressure bolt 10.
The utility model discloses a use method: when the chuck is used, the outer sleeve 2 is fixed on a rotating main shaft, the screw tap 12 is installed on the chuck 11, the side pressure spring inserts the side into the axial positioning counter bore to compress the side, so that the chuck can have certain elastic floating along the radial direction, the chuck is fixed and floats along the radial direction in the inner sleeve through a plurality of side floating devices, the top plate of the inner sleeve is elastically connected with the top plate of the outer sleeve through the axial elastic device, so that the elastic floating of the inner sleeve along the axial direction is realized, the chuck floats along the radial direction and the axial direction, the floating amount is small, and the rotating requirement of tooth returning can be met.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (7)
1. A floating type thread back-threading device comprises a screw tap (12) and a chuck (11) for fixing the tail of the screw tap (12), and is characterized in that: the inner sleeve structure is characterized by further comprising an inner sleeve (1) with an opening at the lower end and an outer sleeve (2) with an opening at the lower end, the upper end of the inner sleeve (1) is connected inside the outer sleeve (2) in a sliding mode along the axial direction, a top plate of the inner sleeve (1) is elastically connected with a top plate of the outer sleeve (2) through an axial elastic device, the chuck (11) is inserted into the inner sleeve (1), a plurality of side floating devices which are arranged along the axial direction are arranged on the inner sleeve (1), each side floating device comprises a plurality of side inserting shafts (7) which are uniformly distributed along the circumferential direction, each side inserting shaft (7) is connected onto the side wall of the inner sleeve (1) in a sliding mode along the radial direction, a positioning counter bore which allows one end of each side inserting shaft (7) to be inserted is formed in the side of the chuck (11), and each side floating device further comprises a side pressure spring (9) which compresses the side inserting shafts (7) into the positioning counter bore.
2. A floating threaded back-threading device as claimed in claim 1, wherein: the axial elastic device comprises a plurality of upper connecting bolts (3) arranged along the circumferential direction, the upper connecting bolts (3) penetrate through the top plate of the outer sleeve (2) and then are in threaded connection with the top plate of the inner sleeve (1), and the upper connecting bolts (3) are sleeved with upper pressure springs (4) located between the top plate of the inner sleeve (1) and the top plate of the outer sleeve (2).
3. A floating threaded back-threading device as claimed in claim 2, wherein: the bolt head counter bore (5) for accommodating the bolt head of the upper connecting bolt (3) is formed in the upper end face of the top plate of the outer sleeve (2), and the depth of the bolt head counter bore (5) is 1.5-2.5 times of the height of the bolt head of the upper connecting bolt (3).
4. A floating threaded back-threading device as claimed in claim 1, wherein: the positioning counter bore is a spherical hole, and one end of the side insert shaft (7) inserted into the spherical hole is a spherical surface.
5. A floating type thread back-threading device according to any one of claims 1 to 4, wherein: the side floating device further comprises a fixed sleeve (6) fixedly connected to the outer ring of the inner sleeve (1), a spring counter bore is formed in the outer end of the side inserting shaft (7), a pressing block (8) is connected in the spring counter bore in a sliding mode, a side pressure spring (9) is arranged between the pressing block (8) and the spring counter bore, and a side pressure bolt (10) tightly pressing the pressing block (8) to the inside of the spring counter bore is connected to the fixed sleeve (6) in a threaded mode.
6. A floating threaded back-threading device as claimed in claim 5, wherein: the inner ring of the fixed sleeve (6) is connected with the outer ring of the inner sleeve (1) through threads.
7. A floating threaded back-threading device as claimed in claim 6, wherein: and a pressing block counter bore into which the side pressing bolt (10) is inserted is formed in the pressing block (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221353147.5U CN217412716U (en) | 2022-06-01 | 2022-06-01 | Floating type thread returning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221353147.5U CN217412716U (en) | 2022-06-01 | 2022-06-01 | Floating type thread returning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217412716U true CN217412716U (en) | 2022-09-13 |
Family
ID=83191548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221353147.5U Active CN217412716U (en) | 2022-06-01 | 2022-06-01 | Floating type thread returning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217412716U (en) |
-
2022
- 2022-06-01 CN CN202221353147.5U patent/CN217412716U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A floating thread return device Effective date of registration: 20231218 Granted publication date: 20220913 Pledgee: Laiwu Shandong rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG JIUJIA FASTENER CO.,LTD. Registration number: Y2023980072467 |