Accuracy and surface quality are the goals of superior production processes. This is why machining companies invest a great deal of time and expense in tools, machine tools, controls with special functions and options, measuring technology, and, of course, employee skills. Unfortunately, axis motors still receive very little attention in this arrangement, despite being a decisive factor in production quality. Article by Heidenhain.
Electric motors are used in a wide variety of applications and must meet a broad spectrum of requirements. When it comes to axis motors in machine tools, for example, torque ripple and the inertia ratio between the motor and the load are crucial factors, along with the maximum torque. These criteria have a direct effect on the quality of the workpiece to be manufactured. HEIDENHAIN axis motors for machine tools offer a balanced inertia ratio and very low torque ripple for exceptional machining results and dynamic motion control.
A system’s rigidity is a crucial factor in its resilience to vibrations or milling forces—the greater the rigidity, the better. Rigidity, in turn, is heavily influenced by the inertia ratio between the motor and the moving mass of the feed axis (load). This means that larger motors provide greater system rigidity against milling forces or vibrations. Figure 1 shows, as a function of the inertia ratio between the motor and the load, how high a sudden load reversal must be in order to temporarily cause a given position error in a drive.
By way of illustration, a lightweight trailer attached to a large, high-torque vehicle will introduce fewer disturbances into the entire system when exposed to wind gusts or road damage than will a heavy trailer pulled by a lightweight vehicle of the same torque. This is true even though the lighter trailer is obviously much more susceptible to these influences than the heavier one. For a machine tool, this means that the largest possible motor should be moving the lightest possible table in order to minimise the effect of disturbances on the entire system (such as milling forces or vibrations arising at the table).
Unfortunately, if there is a significant difference between the inertias of the motor and the load, it is also necessary to lower the loop gains. Lowering the loop gains leads to lower rigidity, meaning that the entire system reacts more strongly to load disturbances, e.g., from milling forces or vibrations.
For a machine tool, a balanced inertia ratio between the motor and the load should therefore be selected. A balanced ratio provides the amount of rigidity needed to make the entire system insusceptible to external influences exerted on the load, meaning that these influences have no effect on the machining result, and, at the same time, making it possible to work with high loop gains. In other words, the trailer and the vehicle pulling it should be correctly matched to each other.
Check these articles out:
Manufacturing Industry In A Post-Pandemic World
Are Machining Centres Taking Over Jig Bore Work?
ANCA Motion’s New Tubular Linear Motor LinX M Series
Thailand Remains As Production Base For Toyota
For other exclusive articles, visit www.equipment-news.com.
WANT MORE INSIDER NEWS? SUBSCRIBE TO OUR DIGITAL MAGAZINE NOW!
FOLLOW US ON: LinkedIn, Facebook, Twitter
In order to supply modern motors with energy and data, users need appropriate cables that function dependably even at high accelerations and on long travels. Especially for use in motion, igus has developed a hybrid cable that is offered as a drive solution for the new Bosch Rexroth motors. It combines energy and data cable in one and is therefore also suitable for compact installation spaces. igus offers the cable as a fully harnessed readycable that is accurate to the centimetre. This saves the user costs.
Ever smaller and more compact with an even higher output: such a trend is becoming increasingly apparent in the field of motor development. But not only the motor but also the cables used must meet the new requirements. Hybrid cables are one solution. They combine energy and data supply in one by integrating the encoder into the servo cable. This eliminates the need for cabling with a separate measuring system for the encoder. Especially for use in the energy chain, igus has now developed a new hybrid cable suitable for Bosch Rexroth MS2N and IndraDrive Mi motors. A halogen-free PUR outer jacket ensures oil resistance and increases the service life of the cable. The user receives the drive solution already fully harnessed with connector as the so-called readycable from igus.
“While other manufacturers on the market only offer cables in metre lengths, customers can order their solutions from us down to the centimetre. This way we avoid unnecessary waste or residual stock. As readycable, the cable can be connected directly to the machine. This saves additional harnessing and installation times”, explains Markus Hüffel, Product Manager readycable at igus GmbH.
All cables are tested and inspected under real conditions in the company’s own 3,800 square metre test laboratory. Tests have shown that the new hybrid cable with a bend radius of up to 10xd in the e-chain can safely withstand 10 million double strokes over the long term. Due to the realistic tests, igus is the only cable manufacturer in the world capable of providing a 36-month guarantee on its chainflex cables. In total, igus has over 4,200 drive cables suitable for 24 manufacturer standards in its readycable range.
For a quick selection of the suitable solution, with the readycable product finder igus offers a practical online tool. Simply enter the igus part number or the manufacturer, or select the name of the drive manufacturer from the menu; then click on the required cable type and the product finder will list all matching parts. An overview provides the different cable qualities such as outer jacket, bend radius, travel and price. The integrated service life calculator also determines the running time. One click is all it takes to order the matching cable in the desired length and have it delivered within 24 hours.
For other exclusive articles, visit www.equipment-news.com.
Check these articles out:
Cutting Costs, While Saving The Planet For Tool Makers
PC-Based Control For Covid-19 Rapid Testing Production Lines
Mitsui Seiki Remains Operational Amid COVID-19 Guidelines
TRUMPF And Fraunhofer IPA Research Alliance Ramps Up AI For Industrial Use
5G Integration In IIoT Systems Accelerates Industry 4.0 In The Wake Of Pandemic
Software Increases Process Reliability
Increasing Design Freedom in Automotive Industry
WANT MORE INSIDER NEWS? SUBSCRIBE TO OUR DIGITAL MAGAZINE NOW!
FOLLOW US ON: LinkedIn, Facebook, Twitter
The global servo motors and drives market was valued at ~ US$ 9 Bn in 2014, and is expected to surpass US$ 12 Bn by the end of 2019. The servo motors and drives market is expected to grow at a CAGR of ~eight percent between 2019 and 2029, and is estimated to reach a global value of ~ US$ 28 Bn by the end of 2029.
A new market study on the servo motors and drives market, which includes the global industry analysis 2014–2018 and forecast 2019–2029. The report studies the global servo motors and drives market and offers an in-depth analysis for the next ten years. The report on the global servo motors and drives market contains vital macroeconomic and forecast factors that are estimated to drive the growth of the global servo motors and drives market. The report on the servo motors and drives market also discusses restraints that are expected to hamper the global market, along with potential opportunities and latest trends in the market across the value chain.
By application, the robotics segment is likely to hold a significant share across the globe due to the unprecedented developments in the robotics industry and heavy adoption of robotic techniques in various end-use industries. The printing and packaging equipment segment will also show a decent share hold over the market and is set to register a healthy growth over the forecast period. Moreover, in food & beverages industry, servo motors and drives are playing a vital role to make accurate packages of foods or cold drinks. Thus, servo motors and drives application is not limited to the above mentioned industry but also these motors are gaining healthy traction in other industries such as pulp & paper, and textile, among others.
By technology, the servo motors and drives market is segmented into single axis servo systems and multi axis servo systems, among which, the single axis servo systems segment is expected to attract end users and is likely to witness more traction in the servo motors and drives market. The reasonable cost and efficient performance of single axis servo systems is likely to play a pivotal role for the substantial growth in the market of single axis servo systems.
By product type, the global servo motors and drives market is segmented into linear servo motors and rotary servo motors, and both the segments are projected to have near about equal sales with linear servo motors gaining a slight edge in terms of market share. Linear servo motors are manufactured by several manufacturers, which provides customer liberty to choose a product best fit for their purpose. Due to this scenario in the market, linear servo motors have a slightly more sales across the global market. Moreover, linear servo motors and drives are used for repetitive operations such as assembly and arrangement on XY table, CNC machine, etc.
By motor configuration, the global servo motors and drives market is segmented into AC servo motors and DC servo motors and to provide a more specific outlook AC servo motors and drives are further categorised into industrial type and asynchronous type. On the other hand, DC servo motors are categorised into brushless DC motors, separately excited DC motors and permanent magnet DC motor. On the global perspective, AC servo motors are more likely to be preferred in the market due to its ability to operate with the AC current as well as it also pick up frequently light load and heavy load. Almost 3/4th of the market is estimated to be held by the AC servo motors and drives across the globe. Meanwhile, synchronous type AC motors are going to be the top choice of customers among other offerings of servomotors. In the DC servo motors and drives market, all the three sub-segments are expected to attract the target customers in the market.
By rated power capacity, the global servo motors and drives market is segmented into 400 – 750 W, 750 W – 1 kW, 1 – 5 kW, 5 – 15 kW, 15 – 50 kW, and 50 – 100 kW. The demand for these products depend on the requirement of end users. Although, the servo motors and drives 750- 1Kw segment is expected to remain paramount share holder in the market over the forecast period. However, the demand for servo motors and drives entirely depends upon its requirement and applications.
By region, the servo motors and drives market has been segmented into six regions, namely North America, Latin America, Europe, East Asia, South Asia, and Middle East & Africa. In these regions, The Europe market is estimated to grow with a noteworthy share in the global servo motors and drives market over the stipulated time period. However, East Asia & South Asia regions are estimated to grow with significant collective share throughout the forecast period. Moreover, the North America region is expected to account nearly 10 percent share in the global servo motors and drives market owing to the rising awareness of end user towards accuracy and precision, coupled with the factory automation.
The global servo motors and drives market is characterised as a fragmented market, owing to the significant presence of well-established and small-scale manufacturers of servo motors and drives across the globe. For profound analysis, Study has analysed the global market in three categories: Tier-1, Tier-2, and Tier-3. Here, Tier 1 players are estimated to account for large share in the global market. Furthermore, increasing number of full-fledged companies mainly from emerging regions such as in China, are making competitive structure in the global servo motors & drives market.
Moreover, renowned players in the global market are adopting business expansions, acquisitions, collaborations, and product launch strategies, in a bid to promote substantial growth to the servomotors and drives market.
Some of the key players identified across the value chain of the global servo motors and drives market includes Siemens AG, Panasonic Corporation, Parker Hannifin Corporation, Nidec Motor Corporation, Delta Electronics, Inc., Fuji Electric Co., Ltd., Hitachi Industrial Equipment Systems Co. Ltd, Mitsubishi Electric Corporation, Schneider Electric, Rockwell Automation, Inc., ABB, Applied Motion Products, Inc. Altra Industrial Motion Corp., etc.
These insights are based on a report on Servo Motors and Drives Market by Persistence Market Research
WANT MORE INSIDER NEWS? SUBSCRIBE TO OUR DIGITAL MAGAZINE NOW!
FOLLOW US ON: LinkedIn, Facebook, Twitter
