Product Description
Product name: CNC Hob Grinding Machine
Model: HS300CNC5
Brief Introduction of Machine:
- Main performance and features of machine tool:
This machine tool is suitable for sharpening straight flute hobs, spiral flute hobs, and worm gear hobs. It can also sharpen similar cutters or tools. It has a processing diameter of up to 300mm and can process 1-99 slots.
The machine tool control system uses the SIEMENS 828D system, with a fully English user interface. Simply input the workpiece parameters, and it can perform grinding fully automatically. The operation is convenient and practical, with no educational requirements for the operator.
This machine tool has the advantages of a wide processing range, strong operational performance, high precision, and low failure rate. It is suitable for sharpening various hobs and other similar cutters in tool factories, as well as in tool workshops of large and medium-sized factories and mines.
The overall layout of the HS300CNC5 five-axis CNC hob grinding machine.
1) Longitudinal X-axis
a. Stroke: 900mm;
b. Feed motor: German SIEMENS servo motor: torque --18N.M;
Speed --3000r/min;
c. Coupling: elastic coupling without backlash;
d. Linear slide rail: Roller linear slide rail;
e. Ball screw: Ball screw (double nut structure): diameter---50mm; lead---10mm
f. Bearings: Adopting angular contact ball bearings with a tolerance level of P4;
g. Set "soft and hard limits" at the left and right ends of the Longitudinal X-axis.
h. Install " accordion style protective covers" at the left and right ends of the longitudinal X-axis.
2) Horizontal Y-axis
a. stroke:300mm
b. Feed motor: German SIEMENS servo motor: torque --16N.M;
Speed --3000r/min;
c. Coupling: elastic coupling without backlash;
d. Linear slide rail: Roller linear slide rail;
e. Ball screw: Ball screw (double nut structure): diameter-50mm; lead---10mm.
f. Bearings: Adopting angular contact ball bearings with a tolerance level of P4;
g. Set "soft and hard limits" at the front and rear ends of the horizontal Y-axis.
h. Install " accordion style protective covers" at the front and rear ends of the horizontal Y-axis.
3) Vertical Z-axis
a. stroke:300mm
b. Feed Motor: German SIEMENS Servo Motor (with Brake): Torque --- 16 N.m;Speed --3000r/min;
c. Coupling: elastic coupling without backlash
d. Linear Guide Rail: (Roller) Linear Guide Rail
e. Ball screw: Ball screw (double nut structure): diameter-50mm; lead---10mm.
f. Bearings: Adopting angular contact ball bearings with a tolerance level of P4;
g. "Soft and hard limits" are set at both the upper and lower ends of the vertical Z-axis.
h. Install " accordion style protective covers" at the upper and lower ends of the vertical Z-axis.
4) Indexing A-axis
a. stroke: 360°
b. DD direct drive
5) B-axis for horizontal rotation of grinding head
a. Worm gear drive
b. stroke: +/-45°
2. Structural characteristics
1) The layout form where the workpiece rotates while the grinding head moves longitudinally back and forth.
2) Using CNC control, the mechanical structure is simple, without intermediate transmission components or indexing plates. In other words, the spiral and indexing movements of the machine tool are controlled by CNC, eliminating the need for traditional wheel transmission chains or sine bar mechanisms and indexing plates. This allows for rapid adjustment when processing different types of hob cutters, making machine tool operation convenient and highly accurate.
3) Grinding objects: straight flute hob, spiral flute hob, and other similar precision workpieces, cutting tools (materials of various tools include M series high-speed steel, cemented carbide, and S390 powder metallurgy).
4) The working procedure adopts variable programming method, users only need to input corresponding variable parameters according to the different requirements of the hob to be sharpened, and the machine tool can automatically complete precision grinding.
5) The grinding method for sharpening the hob: flat grinding with the grinding head.
6) The processing area is fully enclosed, capable of achieving strong wet grinding.
3. Auxiliary structure
1) Tailstock clamping mechanism
a. Clamping mode: hydraulic clamping;
b. Center extension stroke: 30mm
Product Parameters
4. Technical Parameters
| 1 |
Hob diameter range |
Φ63-Φ300mm |
| 2 |
Number of chip flutes on the hob |
1-99 flutes |
| 3 |
Maximum helix angle of the chip flute on the hob |
±45° |
| 4 |
Maximum hob tooth depth |
55mm |
| 5 |
Maximum length of the hob |
550mm |
| 6 |
Maximum positive front Angle of the hob |
usually set at 10° |
| 7 |
Maximum negative front Angle of the hob |
-30° |
| 8 |
center height |
180mm |
| 9 |
grinding wheel diameter range |
Φ150-Φ300mm |
| 10 |
Rated power of the electric spindle |
≥10KW |
| 11 |
Maximum turning Angle of the grinding head in the horizontal plane |
±45° |
| 12 |
Machine dimensions (without casing) |
2250x1750x2265mm(LxWxH) |
5. Machine tool accuracy requirement
1) Position accuracy
| Position accuracy |
Positioning accuracy |
X-axis (longitudinal) |
0.012mm/ Full stroke |
| Y-axis (transverse) |
0.01mm/Full stroke |
| Z-axis (vertical movement) |
0.01mm/ Full stroke |
| A-axis (rotation) |
±8″ |
| C-axis (rotation) |
±36″ |
| Repetitive positioning accuracy |
X-axis (longitudinal) |
0.006mm |
| Y-axis (transverse) |
0.006mm |
| Z-axis (vertical movement) |
0.006mm |
| A-axis (rotation) |
4″ |
| C-axis (rotation) |
18″ |
2) Accuracy of hob sharpening:
After hob sharpening, the accuracy can stably reach the German DIN 3968 standard or the national standard GB/T 6084-2001/Class AA.
6. The list of items which go with the machine
| 1 |
Hob arbor (Φ27, Φ32, Φ40, Φ50, Φ60, Φ16, Φ22) |
each 1set (at present, our smallest hob arbor is Φ27.We can try Φ16 and Φ22.) |
| 2 |
Mandrel collet |
1set
|
| 3 |
Front dead center |
1pc
|
| 4 |
rear dead center |
1pc
|
| 5 |
Grinding wheel arbor |
1pc
|
| 6 |
Grinding wheel removal seat |
1set
|
| 7 |
Grinding wheel removal wrench |
1pc
|
| 8 |
Hex key wrench |
1set
|
7. Main components of machine tools
Model
|
name |
specification |
quantity |
brand |
| |
Main machine |
|
1 set |
we supply |
| 828D |
Control system (including servo motor and encoder) |
|
1 |
Siemens |
| |
ball screw |
|
1 |
THK |
| |
Linear guide rail |
|
1 |
THK |
| |
Screw bearing |
|
1set |
Japan(NSK) |
| |
Hydraulic components |
|
1set |
Taiwan Northman |
| |
Coolant filtration machine
|
|
1set |
Wuhan Hongshi |
| LD-11R-R |
Electrostatic air purifier |
|
1 |
"Shaanxi Leibo" or "Dingyou" |
| |
Electric spindle |
|
1 |
Haozhi/Kaige |
| |
Independent cooling system for electric spindle |
|
1 |
Shaanxi Leibo or Zhongbo |
| |
coupling |
|
3 |
Germany KTR |
Additional items (priced separately)
1. Grinding wheel dressing system, including dressing procedure (with one piece of precision steel diamond wheel)
2. automatic fire extinguishing system
3. white corundum grinding wheel: Φ250, 10pcs
4. carbide grinding wheel: Φ250, 10pcs
8. Technical documents to be provided:
1) User manual (flat layout diagram, hob grinding main/subprogram table, electrical schematic diagram)
2) Certificate of quality
3) packing list
4) SIEMENS system related documentation
9. Technical support and training and after-sales service:
1) Upon completion of the goods according to the contract requirements, the supplier notifies the buyer to send personnel to the supplier's location for acceptance. During the acceptance period, the supplier is responsible for providing technical training to the buyer's operators and relevant personnel.
2) After the goods arrive at the buyer's location, the seller will guide the buyer in debugging and provide technical training to the buyer's operators and relevant personnel again. The training period is about one week, and the buyer is responsible for the round-trip airfare, accommodation, and labor costs of the seller's personnel.
3) After the machine acceptance, the supplier provides a one-year warranty. After the warranty period, the supplier still offers preferential technical support and paid spare parts supply
Detailed Photos
CNC system
Grinding wheel trimming device
High precision worm gear pairs
Packaging & Shipping
Packing: wooden case.
Shipping: By sea or by truck or by rail.
FAQ
1.Can I purchase products which are not shown on the website?
Yes. Please send us your detailed requirements and we will try to help with your specific needs.
2.How can I place an order?
You can contact us by email (see contact page).
3.Where do you loading the goods?
Shanghai or Ningbo or Qingdao or Shenzhen port, etc.
4.How to make payment?
You can pay us by Paypal, L/C ,T/T and West Union,etc.
5.What is the type of our transportation?
As your requirement, by express, truck, rail, by sea or by air.
6.Can you offer the customers product sample?
Yes .After receiving your inquiry , we will arrange to send the sample within 3 days.
7.How do you pack the goods ?
According to customer's request.
8.What is your payment terms?
FOB Shenzhen, Guangzhou, Qingdao, Shanghai /Ningbo or other city in China , Or CIF Destination.
9.Can you also offer the service with OEM and ODM ?
Yes. We can offer OEM/ODM service. Please send us your brand information and specification.
10.How long is the warranty of your products ?
Generally, it's one-year-warranty. During the warranty period, we offer you free maintenance.
After the warranty time, lower price for customers buying breakdown parts.
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