TRANSLATION MOTOR AND A METHOD FOR PRODUCING A STATOR OF SUCH A TRANSLATION MOTOR

Abstract

A translation motor includes a flat stator that defines a stator plane and has an upper face and a lower face. An active translation rotor is linearly displaceable relative to an X-axis along the stator plane. The upper face includes a toothed structure arranged linearly with respect to the X-axis and is defined by stator teeth and stator tooth spaces. The flat stator is defined by a stamping-shaped planar stator material and has a die side that is an elevated side and a punch side that is a recessed side. The die side has elevations that define the stator teeth. The die side defines the upper face and the punch side defines the lower face.

Claims

1-7. (canceled)

8. A translation motor, comprising: a flat stator defining a stator plane and having an upper face and a lower face; an active translation rotor being linearly displaceable relative to an X-axis along the stator plane; said upper face including a toothed structure arranged linearly with respect to the X-axis and defined by stator teeth and stator tooth spaces; said flat stator being defined by a stamping-shaped planar stator material, having a die side being an elevated side and a punch side being a recessed side, said die side having elevations defining said stator teeth, said die side defining said upper face and said punch side defining said lower face.

9. The translation motor according to claim 8, wherein said toothed structure is arranged in a planar manner relative to the X-axis and to a Y-axis, and wherein the active translation rotor is moveable linearly to the Y-axis in the stator plane.

10. The translation motor according to claim 8 wherein the stamping-shaped planar stator material has the characteristics of being formed by roller stamping by a pair of rollers defined by a die roller that defines the die side and a punch roller that defines the punch side.

11. A method for producing a stator of a translation motor comprising: providing a stamping tool having a die and a punch, carrying out the following process steps: a) providing a planar ductile stator starting material; b) stamp-reshaping the stator starting material and obtaining stamp-shaped planar stator material having a toothed structure including stator teeth defined by elevations generated by the die on an upper face of the stator material.

12. The method of producing a stator of a translation motor according to claim 11, wherein the stamp-reshaping of the stator starting material is carried out by press stamping.

13. The method of producing a stator of a translation motor according to claim 11, wherein the stamp-reshaping of the stator starting material is carried out by roll stamping using a pair of rollers, the pair of rollers includes a die roller and a punch roller, the toothed structure is defined by the die roller.

14. The method of producing a stator of a translation motor according to claim 11, further comprising subsequent to the process step b), pressing on a top stator tooth surface for smoothing stator teeth of the toothed structure.

Description

[0073] The invention is explained in more detail by way of example with reference to

[0074] FIG. 1 flat stator (top view)

[0075] FIG. 2 translation motor (top view)

[0076] FIG. 3 stamp-shaped planar stator material in various designs

[0077] FIG. 4 production of the flat stator by means of a stamping tool

[0078] FIG. 5 production of the flat stator by means of a double roller

[0079] FIG. 6 reworking of the toothed structure.

[0080] FIG. 1 shows a top view of a finished flat stator 2. In this representation, the flat stator 2 is composed of four pieces of the stamp-shaped stator material 18, which are arranged next to each other in the stator plane 3.

[0081] The stamp-shaped stator material 18 has a toothed structure 8, which is formed by the stator teeth 9 and the stator tooth spaces 10.

[0082] In this embodiment, the toothed structure 8 has round stator teeth 9 arranged in staggered rows along the X-axis.

[0083] FIG. 2 shows a top view of the translation motor. Here, the translation motor is designed as a planar motor. In the planar motor, the translation rotor 1 can move in the X-axis and Y-axis over the stator plane 3, which is bounded by a simple frame structure 3a in this embodiment. The active translation rotor has two guiding elements 1a, which allow the active translation rotor 1 to move over the flat stator 2 without contacting it. The two guiding elements 1a are arranged at a right angle to each other and are movable along the frame structure 3a.

[0084] The flat stator 2 is designed in an analogous manner to the embodiment illustrated in FIG. 1.

[0085] FIG. 3 shows various embodiments of the stamp-shaped planar stator material 18. They differ in the shape and arrangement of the stator teeth 9. Thus, the arrangement of the round stator teeth 9 in staggered rows already described in conjunction with FIG. 1 is illustrated again in a). Further, the designs of round stator teeth 9 in non-staggered rows are illustrated in b), square stator teeth in non-staggered rows are illustrated in c), and rectangles in staggered rows are illustrated in d).

[0086] In all exemplary embodiments, the toothed structure 8 is formed by the stator teeth 9 and stator tooth spaces 10.

[0087] FIG. 4 is a side view of an example of the method for producing the flat stator 2 by means of a stamping tool 14. The stamping tool consists of a die 15 and a punch 16. The recesses of the die 15 and the elevations of the punch 16 engage with each other in the closed condition of the stamping tool 14.

[0088] In the first process step a), the planar stator starting material 17 is inserted into the opened stamping tool such that the upper face 4 faces the die 15 and the lower face 5 faces the punch 16. Thus, the upper face 4 is formed by the die side 6 and the lower face 5 is formed by the punch side 7. In this embodiment, the planar stator starting material 17 is provided discontinuously as a pre-cut part of a steel sheet.

[0089] In the second process step b), the stamping tool 14 is closed and the planar stator starting material 17 is pressed to form the stamp-shaped planar stator material 18.

[0090] The stator tooth 9 of the toothed structure 8 is stamped into the recesses of the die 15. The stator tooth space 10 is located in the non-recessed section of the die 15. And in this way, the toothed structure 8 is created.

[0091] The upper face 4 in the area of the stator teeth 9 forms the top stator tooth surface 19.

[0092] FIG. 5 shows a side view of the production of the flat stator 2 by means of a pair of rollers 11. The pair of rollers 11 is formed by the die roller 12 and the punch roller 13. The die roller 12 has recesses and the punch roller 13 has elevations. The pair of rollers 11 is arranged such that the recesses of the die roller 12 and the elevations of the punch roller 13 engage with each other, wherein the distance of the recesses corresponds to the desired stator tooth space size and is distributed along the roller circumference. The die roller 12 and the punch roller 13 rotate in opposite directions, thus further transporting the planar stator starting material 17.

[0093] In the first process step a), the planar stator starting material 17 is inserted into the rolling device.

[0094] If the pair of rollers 11 grips the planar stator starting material 17, this is drawn through the pair of rollers 11 in process step b) by the rotation of the rollers and is stamped at the same time. In this process, the stamp-shaped planar stator starting material is produced behind the rollers.

[0095] In this embodiment, the planar stator starting material 17 is supplied to the pair of rollers 11 as a continuous material, for example supplied from a roll.

[0096] FIG. 6 shows a reworking of the toothed structure 8. In order to increase the precision of the translation motor, the stator teeth 9 are reworked. Thus, in process step c), unevenness on the stator tooth surface 19 is eliminated by levelling using a smoothing tool 20. In this embodiment, the smoothing tool is formed by two rollers arranged at a fixed distance one to the other. The stamp-shaped planar stator material 18 is guided in the direction of the arrow to the right through the smoothing rollers, which smooth any unevenness, for example round bulges, and produce a planar top stator tooth surface 19.

LIST OF REFERENCE NUMERALS

[0097] 1 translation rotor [0098] 1a guiding elements [0099] 2 flat stator [0100] 3 stator plane [0101] 3a frame construction [0102] 4 upper face [0103] 5 lower face [0104] 6 die side [0105] 7 punch side [0106] 8 toothed structure [0107] 9 stator teeth [0108] 10 stator tooth spaces [0109] 11 pair of rollers [0110] 12 die roller [0111] 13 punch roller [0112] 14 stamping tool [0113] 15 die [0114] 16 punch [0115] 17 stator starting material [0116] 18 stamp-shaped planar stator material [0117] 19 top stator tooth surface [0118] 20 smoothing tool