CN210046021U - Positioning fixture for processing internal spline cross shaft - Google Patents
Positioning fixture for processing internal spline cross shaft Download PDFInfo
- Publication number
- CN210046021U CN210046021U CN201920623921.1U CN201920623921U CN210046021U CN 210046021 U CN210046021 U CN 210046021U CN 201920623921 U CN201920623921 U CN 201920623921U CN 210046021 U CN210046021 U CN 210046021U
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- China
- Prior art keywords
- mandrel
- expansion sleeve
- sleeve
- internal spline
- conical surface
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- Expired - Fee Related
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- 238000003825 pressing Methods 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a processing technology field of internal spline cross provides a positioning fixture of processing internal spline cross. This anchor clamps include: the base plays a bearing role; a mandrel having a first frustum portion at a lower end thereof, the mandrel being mounted on the base; the outer surface of the taper sleeve is provided with a second taper part, and the taper sleeve is arranged on the upper part of the mandrel in a sliding manner; the outer surface of the expansion sleeve is provided with a spline; a first conical surface and a second conical surface are formed on the surface of the inner hole, the first conical surface is in sliding fit with the first frustum part, and the second conical surface is in sliding fit with the second frustum part; and the pressing piece is arranged on the expansion sleeve and used for pressing the expansion sleeve and expanding the expansion sleeve. The fixture is provided with a taper sleeve and a mandrel which are matched with the expansion sleeve, the taper sleeve can be pressed down by the pressing piece, the expansion sleeve is expanded, the accurate positioning of an internal spline cross shaft workpiece is realized, and the workpiece processing quality is ensured; and the clamp has simple structure and convenient operation and use.
Description
Technical Field
The utility model relates to a processing technology field of internal spline cross, concretely relates to positioning fixture of processing internal spline cross.
Background
For internal spline cross shaft products in automobile parts, when production and processing are carried out, shaft end center holes of four shafts are processed. The processing of axle head centre bore generally adopts the mode of dabber location to carry out, and the dabber stretches into in the inner chamber of cross and carries out the position with the internal spline cooperation. However, when the mandrel is used for positioning, the mandrel and the internal spline of the cross shaft need to be arranged with a certain gap, so that the tightness of the mandrel and the cross shaft with the internal spline is not enough, and the positioning accuracy of the center based on the internal spline of the cross shaft is difficult to accurately ensure, thereby affecting the processing position accuracy of the central hole of the shaft end and affecting the quality of processed products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can press from both sides tight internal spline cross axle work piece, and guarantee the anchor clamps of accurate location.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a positioning fixture of processing internal spline cross, its characterized in that includes:
the base plays a bearing role;
a mandrel having a first frustum portion at a lower end thereof, the mandrel being mounted on the base;
the outer surface of the taper sleeve is provided with a second taper part, and the taper sleeve is arranged on the upper part of the mandrel in a sliding manner;
the outer surface of the expansion sleeve is provided with a spline; a first conical surface and a second conical surface are formed on the surface of the inner hole, the first conical surface is in sliding fit with the first frustum part, and the second conical surface is in sliding fit with the second frustum part;
and the pressing piece is arranged on the expansion sleeve and used for pressing the expansion sleeve and expanding the expansion sleeve.
Further, the mandrel is integrally formed with the base.
Further, the upper end of the mandrel is provided with an external thread, the inner surface of the pressing piece is provided with an internal thread matched with the external thread, and the pressing piece is connected with the mandrel through the thread.
Furthermore, the positioning clamp also comprises a height cushion plate which is provided with a through hole; the height base plate penetrates through the first conical table part through the through hole, and the height base plate is connected with the base.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a positioning fixture through base, dabber, the cover that rises, taper sleeve and compress tightly the design of mutually supporting such as piece, has got rid of the clearance between anchor clamps and the internal spline cross axle work piece, has avoided the central error that the internal spline is the benchmark, has realized the accurate location to the internal spline cross axle work piece, has ensured the accuracy of axle head centre bore processing, has guaranteed the stability of processing product quality.
2. The expansion sleeve and the height base plate of the positioning clamp of the utility model are replaceable parts, and can be replaced and adjusted according to the size and specification of the processed workpiece, i.e. the positioning clamp can be integrated and multipurpose, and has wide application range; the set of positioning fixture can be used for processing and positioning various workpieces, so that the manufacturing cost of the processing fixture is effectively reduced; and the positioning clamp has simple structure, convenient use and easy replacement, and can effectively improve the working efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is the general assembly structure diagram of the positioning fixture for processing the internal spline cross shaft of the utility model.
Fig. 2 is a schematic structural view of the middle internal spline cross shaft workpiece of the present invention.
Reference numerals:
1: a base; 2: a mandrel; 3: expanding sleeves; 4: a taper sleeve; 5: a compression member; 6: a height pad.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the product of the present invention is usually placed when in use, or the orientation or positional relationship that a person skilled in the art usually understands, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, a first feature being "on" a second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under" a second feature includes the first feature being directly over and obliquely above the second feature, or merely meaning that the first feature is at a lesser level than the second feature.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 2, the utility model discloses the work piece of processing is the internal spline cross, and its main part is the ring, and the ring inboard is equipped with the spline, and the ring outside has four cylinder axles along four directions extensions, the utility model discloses a positioning fixture uses the internal spline of main part ring as the benchmark, fixes a position the work piece internal spline cross, then punches its four centers of axle, promptly for the axle head centre bore.
As shown in figure 1, the utility model provides a positioning fixture of processing internal spline cross, this positioning fixture include base 1, dabber 2, the cover 3 that rises, taper sleeve 4, compress tightly 5 and high backing plate 6.
The base 1 plays a role in positioning and bearing, and is usually arranged on a machine tool of processing equipment and fixedly connected with the machine tool through bolts.
The lower end of the mandrel 2 is provided with a first frustum part, the mandrel 2 is vertically installed on the base 1, and the end with the larger diameter of the first frustum part is close to the base 1. In a preferred embodiment, the core shaft 2 and the base 1 are integrally formed into a whole, so that the positioning fixture has a simpler structure and is more convenient to install and use.
The taper sleeve 4 is provided with a second taper part on the outer surface, and the taper sleeve 4 is arranged on the upper part of the mandrel 2 in a sliding mode. The smaller end of the second conical table part faces downwards.
The expansion sleeve 3 is of an annular structure, the outer surface of the expansion sleeve is provided with a spline, and the spline is an external spline and is matched with an internal spline of a cross shaft workpiece to be machined. The surface of the inner hole of the expansion sleeve 3 is provided with a first conical surface and a second conical surface, the first conical surface is positioned at the inner lower side of the expansion sleeve 3, and the second conical surface is positioned at the inner upper side of the expansion sleeve 3. During assembly, the first conical surface is in sliding fit with the first frustum part at the lower end of the mandrel 2; the second conical surface is interactively matched with the second conical part on the outer surface of the taper sleeve 4. The expansion sleeve 3 is made of a metal material with good ductility and has certain elasticity. The utility model discloses a positioning fixture sets the cover 3 that rises of a plurality of different specifications sizes, according to the difference of treating processing work piece size, can rise the change of cover 3 so that match with the work piece.
And the pressing piece 5 is sleeved on the mandrel 2, arranged on the expansion sleeve 3 and used for pressing and expanding the expansion sleeve 3. 2 upper ends of dabber in this embodiment are equipped with the external screw thread, compress tightly 5 be equipped with dabber 2 on external screw thread assorted internal thread, compress tightly promptly the piece with the dabber is through threaded connection. The pressing piece 5 rotates downwards to press the taper sleeve 4 downwards, the second frustum part of the taper sleeve 4 and the second conical surface of the expansion sleeve 3, and the first frustum part of the mandrel 2 and the first conical surface of the expansion sleeve 3 are in sliding fit with each other, so that the expansion sleeve 3 is expanded and pressed; the pressing piece 5 rotates upwards, the pressure on the taper sleeve 4 disappears, and the expansion sleeve 3 recovers.
The utility model discloses an anchor clamps still are equipped with high backing plate 6, and 6 centers of high backing plate have a through-hole. The height backing plate 6 is sleeved on the mandrel 2 through a through hole, the through hole is sleeved on the first cone portion at the lower end of the mandrel 2, and meanwhile the height backing plate 6 is connected with the base. When the device is used, the height base plate 6 is positioned between the base 1 and the inner spline cross shaft workpiece, and can heighten the inner spline cross shaft workpiece, so that the taper sleeve 4 and the pressing piece 5 can perform the functions of expanding the expansion sleeve 3 and tightly press and position the workpiece. In the positioning fixture of the present embodiment, the height pad 6 is provided with a series of complete sets, including height pads 6 with different thickness specifications, such as 1.0cm, 2.0cm, 3.0cm, 4.0cm, 5.0cm, etc. During operation, according to the difference of the sizes such as waiting to process work piece thickness, select the high backing plate 5 of suitable thickness to install to guarantee the normal line of this positioning fixture function.
When the machine tool works, the base 1 is arranged on the machine tool, and the mandrel 2 is fixedly arranged on the base 1, or the base 1 and the mandrel 2 are integrally formed and arranged on the machine tool; selecting a matched expansion sleeve 3 according to the size of the internal spline cross shaft to be processed, and sleeving the expansion sleeve 3 on the mandrel 2; the core shaft 2 is sleeved with the taper sleeve 4 and the pressing piece 5 in sequence; and selecting a height base plate 6 according to the size of the internal spline cross shaft workpiece to be processed, mounting the height base plate 6 on the base 1, and finishing the assembly of the positioning clamp. The workpiece of the cross shaft with the internal spline to be processed is sleeved on the installed clamp and is positioned above the height backing plate 5, and the internal spline of the workpiece is matched with the external spline of the expansion sleeve 3; and the pressing piece 5 is rotated downwards to press the taper sleeve 4 downwards, and the expansion sleeve 3 is expanded to press the internal spline cross shaft workpiece. After the cross shaft expansion sleeve is used, the pressing piece 5 is rotated upwards, the pressure borne by the pressing piece disappears, the expansion sleeve 3 recovers, and a machined cross shaft workpiece can be taken out.
Claims (4)
1. The utility model provides a positioning fixture of processing internal spline cross, its characterized in that includes:
the base (1) plays a bearing role;
a mandrel (2) having a first frustum portion at a lower end thereof, the mandrel (2) being mounted on the base (1);
the outer surface of the taper sleeve (4) is provided with a second taper part, and the taper sleeve is arranged on the upper part of the mandrel (2) in a sliding manner;
the outer surface of the expansion sleeve (3) is provided with a spline; a first conical surface and a second conical surface are formed on the surface of the inner hole, the first conical surface is in sliding fit with the first frustum part, and the second conical surface is in sliding fit with the second frustum part;
and the pressing piece (5) is arranged on the expansion sleeve (3) and is used for pressing the expansion sleeve (3) and expanding the expansion sleeve.
2. The positioning fixture for machining the internally splined cross shaft as claimed in claim 1, wherein the mandrel (2) is integrally formed with the base (1).
3. The positioning fixture for machining the internally splined cross shaft as claimed in claim 1, wherein an external thread is arranged at the upper end of the mandrel (2), an internal thread matched with the external thread is arranged on the inner surface of the pressing piece (5), and the pressing piece (5) and the mandrel (2) are connected through the thread.
4. The positioning jig for machining an internally splined cross according to claim 1, further comprising a height shim plate (6) having a through hole; the height base plate (6) penetrates through the first conical table part through the through hole, and the height base plate (6) is connected with the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623921.1U CN210046021U (en) | 2019-04-30 | 2019-04-30 | Positioning fixture for processing internal spline cross shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623921.1U CN210046021U (en) | 2019-04-30 | 2019-04-30 | Positioning fixture for processing internal spline cross shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210046021U true CN210046021U (en) | 2020-02-11 |
Family
ID=69381788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920623921.1U Expired - Fee Related CN210046021U (en) | 2019-04-30 | 2019-04-30 | Positioning fixture for processing internal spline cross shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210046021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847107A (en) * | 2024-01-15 | 2024-04-09 | 泰尔重工股份有限公司 | An involute spline pair for a high-speed long telescopic universal shaft and its processing technology and tooling |
-
2019
- 2019-04-30 CN CN201920623921.1U patent/CN210046021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847107A (en) * | 2024-01-15 | 2024-04-09 | 泰尔重工股份有限公司 | An involute spline pair for a high-speed long telescopic universal shaft and its processing technology and tooling |
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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 positioning fixture for machining cross shaft of internal spline Effective date of registration: 20201202 Granted publication date: 20200211 Pledgee: Mingshan Branch of Ya'an Rural Commercial Bank Co.,Ltd. Pledgor: SICHUAN LIANMAO MACHINERY MANUFACTURE Co.,Ltd. Registration number: Y2020510000108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200211 |