CN115723065A - Clamping device for clamping workpieces, in particular gear housing - Google Patents
Clamping device for clamping workpieces, in particular gear housing Download PDFInfo
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- CN115723065A CN115723065A CN202110993211.XA CN202110993211A CN115723065A CN 115723065 A CN115723065 A CN 115723065A CN 202110993211 A CN202110993211 A CN 202110993211A CN 115723065 A CN115723065 A CN 115723065A
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- rod
- clamping device
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- clamping
- lever
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Abstract
The invention relates to a clamping device for clamping a workpiece, in particular a gear housing, wherein a multi-part tie rod is received in a multi-part clamping block, wherein the tie rod has at least one lower rod part, an intermediate rod part and an upper rod part, wherein the clamping block has at least one base part, an intermediate part and an upper part, wherein the intermediate rod part has a first toothing which meshes with the toothing of the lower rod part and a second toothing which meshes with the toothing of the upper rod part, wherein the lower rod part is connected to the base part.
Description
Technical Field
The invention relates to a clamping device for clamping a workpiece, in particular a gear housing.
Background
It is known that objects can be clamped to a table by means of clamping means.
Disclosure of Invention
The object of the present invention is therefore to develop a clamping device in which clamping of workpieces of different sizes is to be achieved with little effort.
According to the invention, this object is achieved by a clamping device according to the features given in claim 1.
A clamping device for clamping a workpiece, in particular a gear housing, is proposed, in particular wherein the clamping device has at least one clamping device, an important feature of the clamping device being that a multi-part tie rod is received, in particular fittingly precisely received, in a multi-part clamping block, in particular of a corresponding clamping device, wherein the tie rod has at least one lower rod part, an intermediate rod part and an upper rod part, wherein the clamping block has at least one base part, an intermediate part and an upper part, wherein the intermediate rod part has a first toothing which meshes with the toothing of the lower rod part and a second toothing which meshes with the toothing of the upper rod part, in particular wherein a bolt head of a first bolt which is screwed into a threaded bore of the upper rod part is supported on the upper part, wherein the lower rod part is connected to the base part or at least rests on a step of the base part, in particular for limiting the direction of a tensile force caused by the bolt when screwing into the upper rod part.
The advantage here is that the clamping device can be changed simply and quickly by means of a modular construction. Thus, shorter or longer intermediate parts can be used, or the number of intermediate parts is variable, since an interface is provided between the base part and the intermediate part, and also between the intermediate part and the upper part. In a corresponding manner, an interface is provided not only between the lower rod part and the intermediate rod part, but also between the upper rod part and the intermediate rod part.
The resulting multi-part tie rod can be subjected to high forces in the direction of the tensile force by being received in the clamping blocks with a precise fit, since the parts of the tie rod bear against one another in the direction of the tensile force and cannot be displaced in the transverse direction, i.e. transversely to the direction of the tensile force.
The tie rod thus holds the clamping blocks together. On the upper side of the clamping block, a clamping shoe can be fixed, which is then pressed by a second screw onto the workpiece, the clamping block being arranged on its lower side on a base plate on which the workpiece is mounted.
The workpiece clamped according to the invention is machined after clamping, in particular cut in a machine tool, and is preferably a gear housing.
In an advantageous embodiment, the intermediate part is arranged between the base part and the upper part, wherein the intermediate rod part is arranged between the lower rod part and the upper rod part. The advantage here is that the modular construction of the tie rod enables a large variety with a small number of components. Thus, clamping of workpieces of different sizes can be achieved with little effort.
In an advantageous embodiment, a centering pin is received in the base part, which centering pin projects into the intermediate part, in particular and centers the intermediate part, a further centering pin is received in the intermediate part, which further centering pin projects into the upper part, in particular and centers the upper part, in particular wherein the respective centering pin is locked by means of a respective threaded rod. The advantage here is that the base part is centered towards the intermediate part and subsequently the intermediate part is centered towards the upper part. The clamping block can therefore be manufactured with high manufacturing accuracy. Since these parts are centered relative to each other by means of the centering pin when connecting the parts.
In an advantageous embodiment, the base part is connected to the intermediate part. The advantage here is that the tie rod on the one hand brings about the connection by means of the tensile force and on the other hand positively locks the connection itself.
In an advantageous embodiment, one or the intermediate part is connected to the upper part. The advantage here is that the tie rod on the one hand brings about the connection by means of the tensile force and on the other hand positively locks the connection itself.
In an advantageous embodiment, the clamping band is limited, in particular in the direction of the tensile force, by the head of a further bolt, which projects through the slot of the clamping band and is connected to the upper part. The advantage here is that the clamping shoes and the side of the tie rod facing away from the clamping band are connected to one another.
In an advantageous embodiment, the third screw, which is screwed into the upper part, supports the clamp, in particular on the side of the clamp facing the upper part. The advantage here is that a uniform clamping can be reliably achieved.
In an advantageous embodiment, the centering pins, in particular the first and second centering pins, are arranged in recesses extending through the clamping blocks, in particular wherein the recesses are closed off from the surroundings by means of plugs. The advantage here is that the recess is spaced apart from the tie rod. Thus, the centering function can be performed spaced apart from the tie rod.
In an advantageous embodiment, the tension rod, in particular the tension force generated by the first screw, presses the upper part against the intermediate part, so that the intermediate part is pressed against the base part. The advantage here is that the tie rod stabilizes the clamping blocks and holds them together.
In an advantageous embodiment, the first toothing of the intermediate lever part which meshes with the toothing of the lower lever part is designed such that the tensile force generated by the first screw is transmitted from the lower lever part to the intermediate lever part in a form-fitting manner. The advantage here is that the tooth flanks lying against one another extend transversely to the direction of the tensile force. The tensile force is thus conducted. The shear forces generated thereby are derived by the fitting, exact reception of the tie rod in the clamping blocks and ensure the geometry of the tie rod.
In an advantageous embodiment, the second toothing of the intermediate lever part which meshes with the toothing of the upper lever part is designed such that the tensile force generated by the first screw is transmitted from the intermediate lever part to the upper lever part in a form-fitting manner. The advantage here is that the tooth flanks lying against one another extend transversely to the direction of the tensile force. The tensile force is thus conducted. The shear forces generated thereby are derived by the fitting, exact reception of the tie rod in the clamping blocks and ensure the geometry of the tie rod.
In an advantageous embodiment, the mutually adjacent flanks of the respectively intermeshing teeth have an angle with respect to a plane whose normal direction is oriented parallel to the direction of the tensile force and/or parallel to the rod direction, wherein the angle has a value of less than 10 °, in particular 0 °, in particular at least for the right flank of a respective tooth of the respective tooth or alternatively at least for the left flank of a respective tooth of the respective tooth. The advantage here is that the tooth flanks lying against one another extend transversely to the direction of the tensile force. The tensile force is thus conducted. The shear forces generated thereby are derived by the precisely fitting reception of the tie rod in the clamping blocks and ensure the geometry of the tie rod.
In an advantageous embodiment, the respective tooth is designed as an involute tooth. The advantage here is that the toothing can be produced in a simple manner.
In an advantageous embodiment, the center point of the pitch circle of the toothing is spaced apart from the tie rod and from the center axis of the tie rod, in particular from a line connecting the centers of gravity of the lower and upper rod parts. The advantage here is that the tooth flanks lying against one another extend transversely to the direction of the tensile force. The tensile force is thus conducted. The shear forces generated thereby are derived by the precisely fitting reception of the tie rod in the clamping blocks and ensure the geometry of the tie rod.
In an advantageous embodiment, the clamping block has a second intermediate part which is arranged between the upper part and the base part, wherein the tie rod has a second intermediate rod part which is arranged between the upper part and the lower part, in particular wherein the first intermediate part is of identical construction to the second intermediate part and/or wherein the first intermediate rod part is of identical construction to the second intermediate rod part. The advantage here is that the clamping device can be matched to workpieces of different sizes with the least possible effort.
Further advantages are given by the dependent claims. The invention is not limited to the combination of features of the claims. Further possible combinations of the features of the claims and/or of the individual claims and/or of the description and/or of the drawing can be derived by the person skilled in the art, in particular from the objects set forth and/or by comparison with the prior art.
Drawings
The invention will now be described in detail with reference to the schematic drawings:
fig. 1 is an oblique view of a clamping device for holding a workpiece in a force-fitting manner.
Fig. 2 is a cross-sectional view of the clamping device.
Fig. 3 is a side view of the drawbar.
Fig. 4 is a partially enlarged view of the draw bar.
Fig. 5 is an oblique view of the draw bar.
Fig. 6 is an installation view of the first workpiece 60 fixed to the base plate 1 by the clamping device.
Fig. 7 is a mounting view of the first workpiece 70 secured to the base plate 1 by one of the same components of the clamping device.
Fig. 8 is a sectional view belonging to fig. 7.
Fig. 9 is an oblique view of the intermediate lever member 21.
Fig. 10 is an oblique view of the upper pole member 22.
List of reference numerals:
1 base plate
2 base part
3 intermediate part
4 Upper part
5 bolt
6 bolt, in particular support bolt
7 clamping bolt
8-clamp, in particular a clamp bar
20 lower rod Member
21 middle rod part
22 Upper rod Member
23 plug
24 centering pin
25 centering pin
60 workpiece, in particular a gear housing
70 workpiece, in particular gear housing
Detailed Description
As shown in fig. 1 and 2 together with fig. 3 to 7, the clamping device has a base part 2 which is fixed to a base plate 1.
An intermediate part 3 is attached to the base part 2, on which an upper part 4 is attached, to which a clamping screw 7 is fastened, which projects through a clamping strap 8, in particular a longitudinal slot of a clamping beam, and which in particular limits the clamping strap in the clamping direction.
The bolt 5 is a tension-loaded pull rod designed in accordance with the invention as a multi-part form. The tie rods extend from the base part 2 through the intermediate part 3 to the upper part 4.
Furthermore, a screw 6, in particular a bearing screw, is provided on the upper part 4, which screw serves as a bearing for the clamping band 8. In particular the bolts 6 are screwed into the upper part 4.
Thus, a workpiece mounted on the base plate 1 can be clamped by means of the clamping band 8 and can then be machined by a tool, in particular a machine tool.
By means of the modular construction, workpieces of different sizes can be clamped and machined by means of correspondingly modified modules and/or by means of a modified number of modules.
As shown in fig. 2, the lower pole member 20 is received and fixed in the base member 2. The lower shank element 20 has a toothing on its upper side, i.e. in its first end region.
The intermediate lever part 21 has a toothing on both end regions thereof, in particular, in its lower end region and its upper end region.
A first tooth of the two teeth of the intermediate lever member 21 is engaged with the teeth of the lower lever member 20.
During production, the intermediate part 3 is placed on the base part 2 after the toothing, wherein the centering pin 24 received in the base part 2 centers the intermediate part 3 toward the base part 2. For this purpose, the centering pin 24 in particular projects from the base part 2 and, after the intermediate part 3 has been placed on the latter, projects into the intermediate part 3.
The intermediate lever part 21 projects from the intermediate part 3 with a toothing arranged on its end region facing away from the base part 2.
In a next step, the upper lever part 22, which likewise has an end region provided with teeth, is therefore connected by the teeth of the upper lever part 22 engaging with the second of the two teeth of the intermediate lever part 21 and then the upper part 4 being pushed onto the intermediate part 3, wherein the centering pin 23 received in the intermediate part 3 centers the upper part 4 towards the intermediate part 3.
For this purpose, the centering pin 23 projects in particular from the middle part 3 and, after the upper part 4 has been placed on top, into the upper part 4.
The upper rod part 22 has a threaded bore, in particular with its bore axis oriented parallel to the rod direction.
The screw 5 is screwed into a threaded bore of the upper rod part 22, the head of the screw bearing against the upper part 4. The screw 5 projects through the upper part 4 and therefore, when screwed down, pulls the upper part 22 toward the upper part 4, so that a pulling force is generated in a multi-part rod formed by the lower part 20, the middle part 21 and the upper part 22.
The centering pins 24 and 25 can be fixed by means of corresponding radial, in particular locked, threaded bolts which project through the base part 2 or through the intermediate part 3.
The centring pins 24 and 25 are received in indentations projecting through the base part 2, the intermediate part 3 and the upper part 4.
By means of the plug 23, the gap in the upper part is closed off from the surroundings.
The toothing of the respective end regions is designed such that the respective intermeshing toothing transmits the tensile force generated by the screw 5, in particular when screwing in the screw 5, in a form-fitting manner.
In order to prevent radial displacement of the parts connected by the intermeshing teeth, i.e. the lower rod part 20 and the intermediate rod part 21 or the intermediate rod part 21 and the upper rod part 22, the lower rod part 20 is received in the intermediate part 3 with a positive fit after connection with the intermediate rod part 21 and the intermediate part 3 is placed on the base part 2, and the intermediate rod part 21 is received in the intermediate part 3 with a positive fit on the one hand and in the upper part with the upper rod part 22 on the other hand.
The teeth of the toothing are preferably shaped corresponding to involute teeth, wherein the center point of the reference circle of the respective toothing is located outside the tie rod, in particular spaced apart from the center axis of the tie rod formed by the lower rod part 20, the intermediate rod part 21 and the upper rod part 22.
It is therefore important that the respectively intermeshing teeth cannot be pulled apart when a tensile force is generated by the bolt 5, since they cannot be displaced transversely, in particular perpendicularly, to the direction of the tensile force, in particular due to the above-described fitting-in precision.
The screw 6 is screwed into a threaded bore in the upper part 4, so that a bearing for the clamp 8 can be formed on the head of the screw 6.
The clamp 8 is limited by the bolt 5 in that the bolt 5 projects through a slot of the clamp 8 and the head of the bolt 5 is arranged on the side facing away from the upper part 4 and thus limits the clamp 8 in the direction of the tensile force.
As shown in fig. 3 and 5, the tie rod is constructed in multiple parts and consists of a lower rod part 20, an intermediate rod part 21 and an upper rod part 22. The tensile force is generated by means of a screw 23 which is screwed into the upper rod part 22 and is supported on the upper part 4. Since the head of the screw 23 rests on the upper part 4 on the side of the upper part 4 facing away from the upper part 22. The bolts pass through the upper member, which is hidden in fig. 3 and 5, and are screwed into threaded holes of the upper member 22.
As can be seen clearly in fig. 4, the mutually adjacent flanks of the intermeshing teeth have an angle with respect to a plane whose normal direction is oriented parallel to the direction of the tensile force. The value of this angle is preferably less than 10 ° and preferably allows infinitesimal reduction, i.e. reaching zero, in particular at least for the right flank of the tooth or alternatively for the left flank of the tooth.
The clamping device thus formed serves to clamp the retarder housing 60, as shown in fig. 6, wherein the retarder housing 60 is between the clamping bracket 8 and the base plate 1. A total of four clamping devices of the same construction as the clamping devices described above are used.
As is shown in fig. 7 together with fig. 8, the clamping device can be extended by inserting an additional intermediate part 3 between the intermediate part 3 and the base part 2 and by additionally inserting a further intermediate rod part 21 between the lower rod part 20 and the intermediate rod part 21. Accordingly, an additional centering pin must also be provided in the additionally inserted intermediate lever part 21.
Thus, a large workpiece 70, in particular a reduction gear housing, can be fixed to the base plate 1 by means of the clamping device.
In a further exemplary embodiment according to the present invention, the further intermediate lever part 21 has a different length, wherein the intermediate part 3 likewise has a correspondingly different length. In this way, corresponding clamping devices can be used for the corresponding gear housing.
In a further embodiment according to the invention, the workpiece is nevertheless fixed to the base plate 1 by a plurality of clamping devices. However, the clamping means are not identical, but differ from each other.
In a further embodiment according to the invention, instead of involute teeth another tooth is used, in particular a wedge-shaped tooth.
Claims (13)
1. A clamping device for clamping a workpiece, in particular a gear housing,
in particular, the clamping device has at least one clamping device,
it is characterized in that the preparation method is characterized in that,
the multi-part tie rod is received in the multi-part clamping block, in particular of the corresponding clamping device, in particular is received in a precisely fitting manner,
wherein the pull rod has at least one lower rod part, an intermediate rod part and an upper rod part,
wherein the clamping block has at least one base part, an intermediate part and an upper part,
wherein the intermediate lever member has a first tooth portion engaged with the tooth portion of the lower lever member and a second tooth portion engaged with the tooth portion of the upper lever member,
in particular wherein the head of the first screw (5) screwed into the threaded bore of the upper rod part is supported on the upper part,
the lower rod part is connected to the base part or at least rests against a step of the base part, in particular for limiting the lower rod part in the direction of a tensile force caused by the screw when screwing into the upper rod part.
2. The clamping device as claimed in claim 1,
it is characterized in that the preparation method is characterized in that,
the intermediate part is arranged between the base part and the upper part,
wherein the middle rod member is disposed between the lower rod member and the upper rod member.
3. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
in the base part, a centering pin is received, which projects into the intermediate part, in particular said centering pin centers the intermediate part,
in the intermediate part, a further centering pin is received, which projects into the upper part, in particular it centers the upper part,
in particular, the respective centering pin is locked by means of a respective threaded rod.
4. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the base part is connected with the intermediate part,
and/or
One or the intermediate parts are connected with the upper part.
5. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the head of a further bolt (7) which projects through the slot of the clamp and is connected to the upper part, in particular in the direction of the tensile force, constrains the clamp.
6. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the third screw, which is screwed into the upper part, supports the clampband, in particular on the side of the clampband facing the upper part.
7. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the centering pins, in particular the first centering pin and the second centering pin, are arranged in a gap through the clamping block,
in particular, the recess is closed off from the environment by means of a plug.
8. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the tension rod, in particular the tension force generated by the first bolt, presses the upper part onto the intermediate part, so that the intermediate part is pressed onto the base part.
9. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the first toothing of the intermediate lever part, which meshes with the toothing of the lower lever part, is designed such that the tensile force generated by the first screw is transmitted from the lower lever part to the intermediate lever part in a form-fitting manner,
and/or
The second toothing of the intermediate lever part, which meshes with the toothing of the upper lever part, is designed such that the tensile force generated by the first screw is transmitted from the intermediate lever part to the upper lever part in a form-fitting manner.
10. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the mutually adjacent flanks of the respectively intermeshing teeth are at an angle to a plane whose normal direction is oriented parallel to the direction of the tensile force and/or parallel to the rod direction,
wherein the angle has a value of less than 10 °, in particular 0 °, in particular at least for the right flank of a respective tooth of the respective tooth section or alternatively at least for the left flank of a respective tooth of the respective tooth section.
11. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the respective teeth are designed as involute teeth.
12. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the center point of the reference circle of the toothing is spaced apart from the tie rod and from the center axis of the tie rod, in particular from a straight line connecting the centers of gravity of the lower and upper rod parts.
13. Clamping device according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the clamping block has a second intermediate part, which is arranged between the upper part and the base part,
wherein the tension rod has a second intermediate rod member arranged between the upper rod member and the lower rod member,
in particular, the first intermediate part is of identical construction to the second intermediate part and/or the first intermediate part is of identical construction to the second intermediate part.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993211.XA CN115723065A (en) | 2021-08-26 | 2021-08-26 | Clamping device for clamping workpieces, in particular gear housing |
| DE102022002625.2A DE102022002625A1 (en) | 2021-08-26 | 2022-07-18 | Clamp arrangement for clamping a workpiece, in particular a gear housing |
| PCT/EP2022/025336 WO2023025408A1 (en) | 2021-08-26 | 2022-07-18 | Clamping arrangement for the clamping-on of a workpiece, in particular a transmission housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993211.XA CN115723065A (en) | 2021-08-26 | 2021-08-26 | Clamping device for clamping workpieces, in particular gear housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115723065A true CN115723065A (en) | 2023-03-03 |
Family
ID=85290200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110993211.XA Pending CN115723065A (en) | 2021-08-26 | 2021-08-26 | Clamping device for clamping workpieces, in particular gear housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115723065A (en) |
-
2021
- 2021-08-26 CN CN202110993211.XA patent/CN115723065A/en active Pending
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