Technical Field

Invention relates to fixing apparatus used for fixing parts to be ground in magnetic grinding machines.

Invention particularly relates to a fixing apparatus providing fixing of wavy or formed surfaced parts onto magnetic table of grinding machine and thus providing grinding of them.

Present State of the Art

Today magnetic tables are used to provide fixing of pieces to be processed at grinding machines. Since the piece to be processed is metal, it is fixed by means of magnetizing by magnetic table and grinding is then performed.

In prior art, particularly staplers or pieces having formed surfaces used in sheet metals drilling forms can not be fixed by magnetic table at desired level.

In the related art, due to small size of stapler surface, adequate contact with magnetic table can not be provided and adequate magnetic attraction is not created.

Surface of formed form contacting magnetic table also causes failure to keep piece at desired fixing level in magnetic table.

In the related art, connecting pieces not attracted by magnetic force cannot be provided by magnetic table.

All those fixing problems makes impossible to grind pieces having formed surfaces.

Pieces having such formed surfaces are ground by use of different methods resulting in high workmanship cost. This increases cost due to high labor cost.

Also grinding formed surfaces takes long time, which reduces production quantity.

Several embodiments related to said fixing apparatus are seen in the literature when literature is searched. One of them is patent numbered TR2018/00551 and entitled “Self-pushing/pulling Cylinder Hydraulic Chuck”. Summary of invention classified under B23Q 3/00 reads as “Invention relates to a holder providing fixing of work pieces to lathe before process at manual machining lathes mainly lathe, grinding, milling cutter made in machining manufacture characterized in comprising chuck having a puling/pushing cylinder providing fixing/releasing work piece in a short time not requiring work force by means of providing fixing operation before machining of work piece by means of movement of base feet connected to piston on outer surface of body by rear motion of pushing/pulling cylinder located in work space in inner part of body and rear motion of piston by connecting to machining lathes mainly lathe, grinding, milling cutter, thus providing compression of upper feet connected to T nut by base feet, to work piece, after metal machining, releasing work piece by moving base feet, T nut and upper fee upon forward motion of piston in working space.”

Said application provides fixing of piece to be subjected to grinding operation. However, it is a not a system providing fixing of pieces having wavy surface. For that reason, it can be shown as an example for above mentioned disadvantages.

Another example for said embodiment is the utility model entitled “Pulling connecting apparatus” numbered TR2014/07969. The abstract of invention in class B23Q 1/25 reads as “This invention relates to a novelty for top and bottom pulling connection apparatus providing connection and fixing of iron, metal, steel, wood, plastic and similar materials to be processed at any injection, press, CNC Cutting and boring machines to machine or work lathe in industrial sector and comprises table fixing space, lower connection housings, upper connection housings, T nut channel space bolt channel thrust wall t nut channel thrust wall parts. Protection of CNC machine table bottom surface gets damaged and deforms even in case of 1 millimetre displacement of cutting tool processing form surface. After a certain time period it loses its feature and thereafter table is removed and welding and grinding on cutting tool requires extra time, effort and money loss. Pulling connection apparatus eliminates all of the problem."

This application develops mounting apparatus providing mounting of parts of varying sizes. However, this apparatus cannot provide fixing of pieces having form surfaces and wavy surfaces. Therefore, some disadvantages of above application can be given as example,

In conclusion, developments have been made in fixing apparatus used in magnetic grinding machines in parallel to technology and, therefore, new embodiments eliminating the above disadvantages and offering solutions to existing systems are needed.

Purpose of the Invention

Differently from the embodiments used in the present related art the invention relates to fixing apparatus used in magnetic grinding machines developed to solve said disadvantages and provide some additional advantages.

Purpose of the invention is to provide fixing of pieces having formed or wavy surfaces to the surface contacting magnetic table. Thus it is possible to process pieces with formed or wavy surfaces in a safe manner.

Another purpose of the invention is to provide fixing of pieces with small surface inadequate to attract magnetic adequately contacting magnetic table, to magnetic table. A further purpose of the invention is to provide fixing of pieces non-attractable by magnetic force.

In order to achieve above mentioned purposes, the invention relates to a fixing apparatus providing fixing of wavy or formed surfaced parts onto magnetic table of grinding machine and thus providing grinding of them characterized in comprising

• Base table seated onto magnetic grinding lathe and having all components thereon,

• T channel formed alongside on said base table,

• T nut placed into said T channel and capable to move back and forth in the channel and functioning to conduct compressing/fixing,

• bases placed on said base table and whereon piece to be ground is placed,

• Connecting wedge located on said bases and providing compression of pieces to be subject to grinding and thus providing fixed staying of them,

• Thrust providing support by leaning onto connecting wedge,

• Connection member connected said connecting wedge and thrust to T nut and thus providing fixing thereof.

The structural and characteristic features and all advantages of the invention will be understood better in the figures given below and the detailed description by reference to the figures. Therefore, the assessment should be made based on the figures and taking into account the detailed descriptions.

Brief Description of Figures

Figure - 1 shows front two dimension view of fixing apparatus of the invention.

Figure - 2 shows isometric view of fixing apparatus of the invention.

Figure - 3 shows isometric top view of exploded fixing apparatus of the invention.

Figure - 4 shows side two dimension view of fixing apparatus of the invention.

Figure - 5 shows two dimension top view of fixing apparatus of the invention.

Reference Numbers

1. Fixing apparatus 111. Upper surface 10. Base table 20. Base

11. T channel 30. Connecting wedge 31. Wedge contact surface 50. Connection member

32. Wedge connection member space 60. T nut

40. Thrust 61. Connecting member housing

41. Thrust contact surface 70. Piece placement space 42. Thrust connection member space

Detailed Description of an illustrative embodiment of the Invention

Structure principle

A fixing apparatus (1) comprises base table (10), base (20), connecting wedge (30), thrust (40), connection member (50) and T nut (60). Base table (10) comprises a surface providing seating/connection of fixing apparatus (1) of the invention to magnetic table. The surface contacting magnetic table should be smooth.

Base table (10) has T channel (11) formed longitudinally in central part. T channel (11) is the channel where T nut (60) is housed.

Upper surface (111) of said T channel (11) is the part where compression is made upon pressing by T nut (60) following tightening of connection member (50).

Base (20) is the part providing even seating of the piece to be connected. It has two of them. Height thereof should be equal.

Connecting wedge (30) compresses the piece to be processed by help of thrust (40) and thus provides fixing. Wedge contact surface (31) is an inclined/angular surface contacting thrust contact surface (41) and provides pressure onto thrust (40).

Connecting wedge (30) has a wedge connection member space (32) through which connection member (50) passes.

Thrust (40) is the part providing support of connecting wedge (30) and keeping it fixed when exposed to high loads.

Thrust contact surface (41) is the inclined/angular surface contacting wedge contact surface (31) and providing meeting of the loads from connecting wedge (30).

Thrust (40) part has at least one thrust connecting member space (42) formed thereon. This space is the part where connection member (50) passes through and is directed to T nut (60). Connection member (50) is the part providing tightening and fixing of connecting wedge (3) and thrust (4).

T nut (60) is the part located into T channel (11) and providing fixing of the connection member (50). T nut (60) comprises connection member housing (61) where connection member (50) is connected. Connection member housings (61) in number based on number of connection member (50) to be used in the system are formed on the T nut (60). Figure 3 shows clearly T nut (60) and connection member housing (61) formed thereon.

Mountino Principle;

All members of fixing apparatus (1) shown in Figure 3 in demounted form are located on the base table (10).

Firstly, T nuts (60) are placed into T channel (11) shown in central part of base table (10). T channel functions as rail for T nut (60) thanks to its structure and provides T nut (60) sliding like a slide in without getting out of the channel.

Two bases (20) are fixed onto base table (10) in a manner to be on both sides of T channel (11) and parallel to T channel. After the mounting, base table (10) and bases (20) get the form shown in figure 1. Bases (20) can be separated and approached without change in parallel positions. This operation is made according to part size.

Connecting wedges (30) are located on both ends in the inner part on the bases (20). Thrusts (40) are placed next to the connecting wedges (30). Connecting wedges (30) and thrusts (40) are fixed to bases (20) by connection members (50).

Connection member (50) is passed through wedge connection member space (32) located on connecting wedge (30). Connection member (50) passing through it is rotated and inserted into T nut (60) located inside T channel (11) at the very bottom.

Similarly, connection member (50) inserted from thrust connection member space (42) in thrust (40) is inserted through T nut (60) placed in T channel (11). Same procedures are also made for other connecting wedge (30) and thrust (40) located on base (20).

After completion of said mounting procedures, fixing apparatus (1) has the view shown in Figure 2.

Wavy piece to be ground is placed into piece placement space (70) provided between two connecting wedges (30).

Wedge contact surface (31) of connecting wedge (30) and thrust contact surface (41) of thrust (40) are designed in inclined/angular to each. The angle is generally preferred to be 45 degrees. Thus contact of thrust (40) and connecting wedges (30) in vertical direction is increased and thus higher forces can be responded. Sliding of connecting wedges (30) on bases (20) is prevented and fixing of them is facilitated. Operating principle

The piece to be processed is placed on the bases (20) and into piece placement space (70). Based on size of piece the bases (20) are adjusted by means of moving connecting wedges (30) and thrusts (40). Connection members (50) are loosened for such movement and connecting wedges (30) and thrusts (40) are brought into desired position on the bases (20). In addition, the bases (20) are separated from each approached to each in a manner not damaging parallel positioning. Thus desired distance and convenient space as required by size of piece to be processed is provided. After the bases (20), connecting wedges (30) and thrusts (40) are brought into desired position, connection members (50) are tightened.

Connection members (50) rotate and move in connection member housing (61) inside T nut (60) placed in T channel (11) on base table (10). When connection members (50) are tightened, they make rotational motion and move forward inside T nut (60) and pull T nut (60) upward. Upon pulling of T nut (60) by connection member (50), pressure is applied onto upper surface (111) of T channel (11) by T nut (60). Connecting wedges (30) and thrusts (40) are tightened by the pressure and are fixed on the bases (20).

After this fixing, fixing apparatus (1) reaching position shown in figure 5 and figure 2 becomes ready for grinding operation.

Figures shows two thrust connection member spaces (42) on thrust (40) and 2 connection members (50) passing through thrust (4). However, here 1 or more connection member (50) can be used in different designs.