CN209786996U - A magnetic induction automatic heating device for motor casing - Google Patents

Abstract

The utility model discloses a magnetic induction automatic heating device for a motor casing, which comprises a motor casing heating base, a rotating device, a lifting device, a magnetic induction heating machine, a motor casing conveying line, a motor casing feeding device, and a motor casing Unloading device and control device, the rotating device is fixed on the heating base of the motor shell; the lifting device is fixed on the heating base of the motor shell through a square beam; the lifting device is set in the middle of the rotating device, and the magnetic induction heating machine is placed on the motor On the shell heating base, the magnetic induction heating machine is set behind the rotating device, the motor shell conveying line is set in front of the motor shell heating base, the motor shell feeding device, and the motor shell unloading device are fixed on the motor shell heating Compared with the prior art, the beneficial effect of the utility model is that the utility model does not need manual work, can automatically heat the motor casing quickly, has a clean process, energy-saving process, is easy to cooperate with the assembly line for production, and has high production efficiency.

Description

A magnetic induction automatic heating device for motor casing

technical field

The utility model relates to the technical field of motor manufacture, in particular to a magnetic induction automatic heating device for a motor shell.

Background technique

At present, after the motor casing is produced, it needs to be cleaned and dried. The traditional drying device for the motor casing is directly heated and dried in a drying furnace. The drying effect is not very good, which will affect The use of equipment will also damage the life of parts; in the process of assembling the motor, the stator and winding need to be fixed in the aluminum motor casing, and the aluminum motor casing needs to be fixed more firmly before installation It is heated by electric heating, and the spindle is fixed by the principle of thermal expansion and contraction. The traditional heating method has a low degree of automation, and the labor intensity of the workers is high and the efficiency is low.

Therefore, there are defects in the prior art and need to be improved.

Utility model content

The utility model provides a magnetic induction automatic heating device for a motor casing, which solves the above-mentioned problems.

In order to solve the above problems, the technical scheme provided by the utility model is as follows:

A magnetic induction automatic heating device for a motor casing, comprising a motor casing heating base, a rotating device, a lifting device, a magnetic induction heating machine, a motor casing conveying line, a motor casing feeding device, a motor casing unloading device and a control device, the rotating device is fixed on the heating base of the motor shell, the lifting device is fixed on the heating base of the motor shell through a square beam, and the lifting device is set in the middle of the rotating device, so The magnetic induction heating machine is placed on the heating base of the motor casing, the magnetic induction heating machine is arranged behind the rotating device, and the conveying line of the motor casing is arranged in front of the heating base of the motor casing. The motor casing feeding device and the motor casing unloading device are fixed on the motor casing heating base, and the motor casing feeding device and the motor casing unloading device are arranged on the In front of the rotating device, the structure of the motor shell unloading device is consistent with that of the motor shell feeding device, the motor shell unloading device is located on the right side of the motor shell feeding device, and the control device is fixed on On the motor casing heating base, the rotating device, lifting device, magnetic induction heating machine, motor casing conveying line, motor casing feeding device, and motor casing unloading device are electrically connected to the control device The heating base of the motor shell is provided with a frame, a workbench, a foot and a heating machine placement plate, the workbench is fixed on the frame, and a plurality of the feet are fixed on the bottom of the frame; The rotating device is provided with an electric rotating motor, a lower turntable, an upper turntable and a motor housing fixing table, the electric rotating motor is fixed on the workbench, the lower turntable is fixed on the electric rotating motor, and the upper turntable is fixed on the workbench. The turntable is fixed on the lower turntable through a support rod, and the upper turntable is provided with three placement holes, and the electric rotating motor, the middle of the lower turntable and the upper turntable are all provided with a lift hole which is convenient for the lifting device to go up and down. The two motor casing fixing platforms are respectively arranged on the three placement holes of the upper turntable, and the bottom of the motor casing fixing stations matches the shape of the placement holes; the lifting device is provided with lifting brackets, A lifting motor, a lifting ball screw, a lifting slider, a lifting plate, an inductor and an induction block, the lifting bracket is fixed on the frame through a square beam, and the lifting motor is fixed on the lifting bracket through a mounting plate , the lifting ball screw is fixed on the lifting bracket through a bearing, the lower end of the lifting ball screw is connected to the rotating shaft of the lifting motor through a coupling, and the lifting slider is connected to the lifting ball screw The rods are threaded, the lifting plate is fixed on the lifting slider, and a positioning rod matching the positioning hole is arranged in the middle of the lifting plate; the magnetic induction heating machine is provided with a heating machine body and a magnetic induction heating ring, the heating machine body is placed on the heating machine placement plate; the motor casing conveying line is equipped with a motor casing conveying bracket, a conveying motor, a conveying drive gear, a conveying driven gear, a conveying drive shaft, and a conveying drive sprocket, conveying driven shaft, conveying driven sprocket and conveying plate chain, the conveying motor is fixed on the conveying bracket of the motor housing through the mounting plate, and the conveying driving gear is covered on the rotating shaft of the conveying motor On, the conveying driven gear is connected with the conveying driven gear through the chain The transmission drive gear is connected, the transmission drive shaft is fixed on one end of the motor casing transmission bracket through a bearing seat, the transmission driven gear is sleeved on one end of the transmission drive shaft, and the two transmission drive sprockets are connected with the The conveying drive shaft is keyed, the conveying driven shaft is fixed on the other end of the motor casing conveying bracket through a bearing seat, and the two conveying driven sprockets are keyed to the conveying driven shaft; The motor shell feeding device is provided with a feeding bracket, a feeding motor, a feeding driving wheel, a feeding driven wheel, a feeding belt, a feeding slide rail, a feeding slider, a feeding slide plate and a feeding assembly. The feeding bracket is fixed on the workbench, the feeding motor is fixed on the feeding bracket, the feeding driving wheel is sleeved on the rotating shaft of the feeding motor, and the feeding driven wheel The wheel shaft is fixed on the feeding bracket, the feeding driven wheel is connected with the feeding driving wheel through the feeding belt, and the two feeding slide rails are fixed on the feeding bracket. The feeding sliders are slidingly connected with the feeding slide rails, and the feeding sliders are fixed on the feeding sliders. In a preferred technical solution, the heating machine placement plate is fixed on the rear upper side of the frame. In a preferred technical solution, a positioning hole is provided in the middle of the motor housing fixing platform. In a preferred technical solution, the inductor is fixed on the side of the lifting bracket through a mounting plate, and the induction block used in conjunction with the inductor is fixed on the side of the lifting plate. In a preferred technical solution, the magnetic induction heating ring is connected to the heating machine body through a guide rod. In a preferred technical solution, the conveying driven sprocket is connected to the conveying drive sprocket through the conveying plate chain. In a preferred technical solution, a clamping block is fixed on the back of the feeding slide, the feeding slide is fixedly connected to the feeding belt through the clamping block, and the feeding assembly is fixed on the feeding slide superior. In the preferred technical solution, the control device is provided with an electrical cabinet and a control panel, the electrical cabinet is fixed in the frame, the control panel is fixed on the frame, the control panel and the electrical cabinet electrical connection. In a preferred technical solution, the feeding assembly is provided with a lifting slide cylinder, a pick-and-place cylinder mounting plate, a motor shell pick-and-place cylinder, and a motor shell pick-and-place gripper, and the lift slide cylinder is fixed on the loading On the slide, the mounting plate of the pick-and-place cylinder is fixed at the bottom of the cylinder of the lifting slide, the motor shell pick-and-place cylinder is fixed at the bottom of the pick-and-place cylinder, and the two motor shell pick-and-place jaws It is arranged on the motor casing pick-and-place cylinder.

Compared with the prior art, the beneficial effect is that, by adopting the above-mentioned scheme, the utility model can automatically and quickly heat the motor casing without manual labor, the process is clean, the process is energy-saving, it is easy to cooperate with the assembly line for production, and the production efficiency is high.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only utility models For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic diagram of a magnetic induction automatic heating device for a motor shell of the present invention;

Fig. 2 is the structural representation of the rotating device of the present utility model;

Fig. 3 is the structural representation of lifting device of the present utility model;

Fig. 4 is the structural representation of the magnetic induction heating machine of the present utility model;

Fig. 5 is a structural schematic diagram of the motor casing conveying line of the present invention;

Fig. 6 is the enlarged schematic view of the conveying drive sprocket of the present invention;

Fig. 7 is the enlarged schematic view of the conveying driven sprocket of the present invention;

Fig. 8 is a structural schematic diagram of the motor casing feeding device of the present invention.

As shown in the above legend: 1. Motor shell heating base; 11. Rack; 12. Workbench; 13. Legs; 14. Heating machine placement plate; 2. Rotating device; 21. Electric rotating motor; ; 23. Upper turntable; 24. Motor shell fixing platform; 3. Lifting device; 31. Lifting bracket; 32. Lifting motor; 33. Lifting ball screw; 34. Lifting slider; 35. Lifting plate; 36. Induction 37, induction block; 4, magnetic induction heating machine; 41, heating machine body; 42, magnetic induction heating ring; 5, motor shell conveying line; 51, motor shell conveying bracket; 52, conveying motor; 53, conveying Drive gear; 54, conveying driven gear; 55, conveying drive shaft; 56, conveying driving sprocket; 57, conveying driven shaft; 58, conveying driven sprocket; 59, conveying plate chain; 6, on the motor shell Feeding device; 61, feeding bracket; 62, feeding motor; 63, feeding driving wheel; 64, feeding driven wheel; 65, feeding belt; 66, feeding slide rail; 67, feeding slider; 68 , Feeding slide plate; 69, Feeding component; 691, Cylinder of lifting slide table; 692, Mounting plate of pick-and-place cylinder; 693, Pick-and-place cylinder of motor case; 694, Pick-and-place gripper of motor case; Blanking device; 8. Control device; 81. Electric cabinet; 82. Control panel.

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present utility model are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "fixed", "integrated", "left", "right" and similar expressions used in this specification are for the purpose of illustration only. In the drawings, units with similar structures are marked with the same symbols.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the utility model in this specification are only for the purpose of describing specific embodiments, and are not used to limit the utility model.

As shown in Figure 1, an embodiment of the present utility model is:

A magnetic induction automatic heating device for a motor casing includes a motor casing heating base 1, a rotating device 2, a lifting device 3, a magnetic induction heating machine 4, a motor casing conveying line 5, a motor casing feeding device 6, and a motor casing The unloading device 7 and the control device 8, the rotating device 2 is fixed on the motor shell heating base 1, the lifting device 3 is fixed on the motor shell heating base 1 through a square beam, the The lifting device 3 is arranged in the middle of the rotating device 2, the magnetic induction heating machine 4 is placed on the motor shell heating base 1, the magnetic induction heating machine 4 is arranged behind the rotating device 2, and the The motor casing conveying line 5 is arranged in front of the motor casing heating base 1, and the motor casing feeding device 6 and the motor casing unloading device 7 are fixed on the motor casing heating base 1 , the motor shell feeding device 6 and the motor shell unloading device 7 are arranged in front of the rotating device 2, and the motor shell unloading device 7 has the same structure as the motor shell feeding device 6 , the motor casing unloading device 7 is located on the right side of the motor casing feeding device 6, the control device 8 is fixed on the motor casing heating base 1, the rotating device 2, the lifting device 3 , the magnetic induction heating machine 4, the motor casing conveying line 5, the motor casing feeding device 6, and the motor casing unloading device 7 are electrically connected with the control device 8. The motor casing heating base 1 is provided with a frame 11, a workbench 12, feet 13 and a heating machine placement plate 14, the workbench 12 is fixed on the frame 11, and a plurality of the feet 13 are fixed on At the bottom of the frame 11 , the heating machine placement plate 14 is fixed on the rear top of the frame 11 . The rotating device 2 is provided with an electric rotating motor 21, a lower turntable 22, an upper turntable 23 and a motor housing fixing table 24, the electric rotating motor 21 is fixed on the workbench 12, and the lower turntable 22 is fixed on the On the electric rotary motor 21, the upper turntable 23 is fixed on the lower turntable 22 through a support rod, and the upper turntable 23 is provided with three placement holes, the electric turntable 21, the lower turntable 22 and the upper turntable 23 A lifting hole is provided in the middle to facilitate the lifting of the lifting device 3, and the three motor housing fixing platforms 24 are respectively arranged on three placement holes of the upper turntable 23, and the motor housing fixing platforms 24 The bottom matches the shape of the placement hole, a positioning hole is provided in the middle of the motor housing fixing table 24 , and a positioning groove for fixing the motor housing is provided on the top of the motor housing fixing table 24 . The lifting device 3 is provided with a lifting bracket 31, a lifting motor 32, a lifting ball screw 33, a lifting slider 34, a lifting plate 35, an inductor 36 and an induction block 37, and the lifting bracket 31 is fixed on the On the frame 11, the lifting motor 32 is fixed on the lifting bracket 31 through a mounting plate, the lifting ball screw 33 is fixed on the lifting bracket 31 through a bearing, and the lower end of the lifting ball screw 33 is connected to The rotating shaft of the lifting motor 32 is connected by a coupling, the lifting slider 34 is screwed with the lifting ball screw 33, the lifting plate 35 is fixed on the lifting slider 34, and the lifting plate 35 is provided with a positioning rod matching the positioning hole, the inductor 36 is fixed on the side of the lifting bracket 31 through the mounting plate, and the induction block 37 used in conjunction with the inductor 36 is fixed on the The side of the lifting plate 35 . The magnetic induction heating machine 4 is provided with a heating machine body 41 and a magnetic induction heating ring 42, the heating machine body 41 is placed on the heating machine placement plate 14, and the magnetic induction heating ring 42 connects with the heating machine through a guide rod. The body 41 is connected. The motor casing conveying assembly line 5 is provided with a motor casing conveying bracket 51, a conveying motor 52, a conveying drive gear 53, a conveying driven gear 54, a conveying driving shaft 55, a conveying driving sprocket 56, a conveying driven shaft 57, a conveying The driven sprocket 58 and the conveying plate chain 59, the conveying motor 52 is fixed on the conveying bracket 51 of the motor casing through the mounting plate, and the conveying driving gear 53 is sleeved on the rotating shaft of the conveying motor 52, so The conveying driven gear 54 is connected with the conveying driving gear 53 through a chain, the conveying driving shaft 55 is fixed on one end of the conveying bracket 51 of the motor housing through a bearing seat, and the conveying driven gear 54 is sleeved on the One end of the delivery drive shaft 55, the two delivery drive sprockets 56 are keyed to the delivery drive shaft 55, the delivery driven shaft 57 is fixed on the other end of the motor casing delivery bracket 51 through a bearing seat, The two conveying driven sprockets 58 are keyed to the conveying driven shaft 57, and the conveying driven sprockets 58 are connected to the conveying driving sprocket 56 through the conveying plate chain 59, and the conveying plate The chain 59 is provided with a plurality of jigs for placing the motor housing. Described motor housing feeding device 6 is provided with feeding bracket 61, feeding motor 62, feeding driving wheel 63, feeding driven wheel 64, feeding belt 65, feeding slide rail 66, feeding slider 67, The feeding slide 68 and the feeding assembly 69, the feeding bracket 61 is fixed on the workbench 12, the feeding motor 62 is fixed on the feeding bracket 61, and the feeding driving wheel 63 is covered On the rotating shaft of the described feeding motor 62, the described feeding driven wheel 64 is fixed on the described feeding support 61 through the axle, and the described feeding driven wheel 64 is connected with the described feeding drive through the described feeding belt 65. The wheels 63 are connected, the two feeding slide rails 66 are fixed on the feeding bracket 61, the two feeding slide blocks 67 are slidingly connected with the feeding slide rails 66, and the feeding slide plate 68 is fixed On the feeding slider 67, the back of the feeding slider 68 is also fixed with a clamping block, the feeding slider 68 is fixedly connected with the feeding belt 65 through the clamping block, and the feeding The assembly 69 is fixed on the feeding slide 68 . The control device 8 is provided with an electrical cabinet 81 and a control panel 82, the electrical cabinet 81 is fixed in the frame 11, the control panel 82 is fixed on the frame 11, and the control panel 82 is connected to the frame 11. The electrical cabinet 81 is electrically connected, and the control panel 82 is provided with a display, an emergency stop switch, a pause switch and a start switch. The feeding assembly 69 is provided with a lifting slide cylinder 691, a pick-and-place cylinder mounting plate 692, a motor shell pick-and-place cylinder 693, and a motor shell pick-and-place jaw 694, and the lift slide cylinder 691 is fixed on the upper On the material slide plate 68, the pick-and-place cylinder mounting plate 692 is fixed on the bottom of the lifting slide cylinder 691, and the motor housing pick-and-place cylinder 693 is fixed on the bottom of the pick-and-place cylinder mounting plate 692. The casing pick-and-place jaw 694 is arranged on the motor shell pick-and-place cylinder 693 . Working principle: In this embodiment, the motor casing is conveyed through the motor casing conveying line, and the motor casing is transported from the motor casing conveying line to the rotating device through the motor casing feeding device, and the motor casing is moved to the magnetic field through the rotating device. Below the induction heating machine, the motor casing is lifted by the lifting device so that it passes through the magnetic induction heating ring of the magnetic induction heating machine. The magnetic induction heating machine heats the motor casing through the principle of electromagnetic induction, and the heated motor casing is then passed The rotating device moves to the bottom of the motor case unloading device, and finally is transported back to the motor case conveying line through the motor case unloading device.

Compared with the prior art, the beneficial effect is that, by adopting the above-mentioned scheme, the utility model can automatically and quickly heat the motor casing without manual labor, the process is clean, the process is energy-saving, it is easy to cooperate with the assembly line for production, and the production efficiency is high.

It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; Improvement or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present utility model.

Claims (9)

1. the utility model provides a motor casing magnetic induction automatic heating equipment which characterized in that: the device comprises a motor shell heating base, a rotating device, a lifting device, a magnetic induction heating machine, a motor shell conveying assembly line, a motor shell feeding device, a motor shell discharging device and a control device, wherein the rotating device is fixed on the motor shell heating base, the lifting device is fixed on the motor shell heating base through a square beam, the lifting device is arranged in the middle of the rotating device, the magnetic induction heating machine is placed on the motor shell heating base, the magnetic induction heating machine is arranged at the back of the rotating device, the motor shell conveying assembly line is arranged in front of the motor shell heating base, the motor shell feeding device and the motor shell discharging device are fixed on the motor shell heating base, the motor shell feeding device and the motor shell discharging device are arranged in front of the rotating device, and the motor shell discharging device is consistent with the motor shell feeding device in structure, the motor casing discharging device is arranged on the right side of the motor casing feeding device, the control device is fixed on the motor casing heating base, and the rotating device, the lifting device, the magnetic induction heating machine, the motor casing conveying assembly line, the motor casing feeding device and the motor casing discharging device are electrically connected with the control device; the motor shell heating base is provided with a rack, a workbench, support legs and a heater placing plate, the workbench is fixed on the rack, and the plurality of support legs are fixed at the bottom of the rack; the rotating device is provided with an electric rotating motor, a lower rotary table, an upper rotary table and a motor shell fixing table, the electric rotating motor is fixed on the workbench, the lower rotary table is fixed on the electric rotating motor, the upper rotary table is fixed on the lower rotary table through a support rod, the upper rotary table is provided with three placing holes, the middles of the electric rotating motor, the lower rotary table and the upper rotary table are respectively provided with a lifting hole convenient for the lifting device to lift, the three motor shell fixing tables are respectively arranged on the three placing holes of the upper rotary table, and the bottom of each motor shell fixing table is matched with the appearance of the placing hole; the lifting device is provided with a lifting support, a lifting motor, a lifting ball screw, a lifting slider, a lifting plate, an inductor and an induction block, the lifting support is fixed on the rack through a square beam, the lifting motor is fixed on the lifting support through a mounting plate, the lifting ball screw is fixed on the lifting support through a bearing, the lower end of the lifting ball screw is connected with a rotating shaft of the lifting motor through a coupler, the lifting slider is in threaded connection with the lifting ball screw, the lifting plate is fixed on the lifting slider, and a positioning rod matched with a positioning hole formed in the motor shell fixing table is arranged in the middle of the lifting plate; the magnetic induction heating machine is provided with a heating machine body and a magnetic induction heating ring, and the heating machine body is placed on the heating machine placing plate; the motor shell conveying assembly line is provided with a motor shell conveying bracket, a conveying motor, a conveying driving gear, a conveying driven gear, a conveying driving shaft, a conveying driving chain wheel, a conveying driven shaft, a conveying driven chain wheel and a conveying plate chain, the conveying motor is fixed on the motor shell conveying bracket through a mounting plate, the conveying driving gear is sleeved on a rotating shaft of the conveying motor, the conveying driven gear is connected with the conveying driving gear through a chain, the conveying driving shaft is fixed at one end of the motor shell conveying bracket through a bearing seat, the conveying driven gear is sleeved at one end of the conveying driving shaft, the two conveying driving chain wheels are in key connection with the conveying driving shaft, the conveying driven shaft is fixed at the other end of the motor shell conveying support through a bearing seat, and the two conveying driven sprockets are in key connection with the conveying driven shaft; the motor shell feeding device is provided with a feeding support, a feeding motor, a feeding driving wheel, a feeding driven wheel, a feeding belt, feeding slide rails, feeding slide blocks, a feeding sliding plate and a feeding assembly, the feeding support is fixed on the workbench, the feeding motor is fixed on the feeding support, the feeding driving wheel is sleeved on a rotating shaft of the feeding motor, the feeding driven wheel is fixed on the feeding support through a wheel shaft, the feeding driven wheel is connected with the feeding driving wheel through the feeding belt, the two feeding slide rails are fixed on the feeding support, the two feeding slide blocks are connected with the feeding slide rails in a sliding mode, and the feeding slide plates are fixed on the feeding slide blocks.

2. The motor casing magnetic induction automatic heating equipment of claim 1, characterized in that: the heating machine placing plate is fixed above the rear of the rack.

3. The motor casing magnetic induction automatic heating equipment of claim 2, characterized in that: the positioning hole is formed in the middle of the motor casing fixing table.

4. The motor casing magnetic induction automatic heating equipment of claim 3, characterized in that: the inductor passes through the mounting panel to be fixed the lifting support side, with the inductor cooperation is used the response piece is fixed the lifter plate side.

5. The motor casing magnetic induction automatic heating equipment of claim 4, characterized in that: the magnetic induction heating ring is connected with the heater body through a guide rod.

6. The motor casing magnetic induction automatic heating equipment of claim 5, characterized in that: the conveying driven chain wheel is connected with the conveying driving chain wheel through the conveying plate chain.

7. The motor casing magnetic induction automatic heating equipment of claim 6, characterized in that: the back of the feeding sliding plate is further fixedly provided with a clamping block, the feeding sliding plate is fixedly connected with the feeding belt through the clamping block, and the feeding assembly is fixed on the feeding sliding plate.

8. the motor casing magnetic induction automatic heating equipment of claim 7, characterized in that: the control device is provided with an electrical cabinet and a control panel, the electrical cabinet is fixed in the rack, the control panel is fixed on the rack, and the control panel is electrically connected with the electrical cabinet.

9. The motor casing magnetic induction automatic heating equipment of claim 8, characterized in that: the material loading subassembly is equipped with lift slip table cylinder, gets to put the cylinder mounting panel, the motor casing is got and is put cylinder and motor casing and get and put the clamping jaw, the lift slip table cylinder is fixed on the material loading slide, it fixes to get the cylinder mounting panel lift slip table cylinder bottom, the motor casing is got and is put the cylinder and fix get and put cylinder mounting panel bottom, two the motor casing is got and is put the clamping jaw and establish the motor casing is got and is put on the cylinder.